haemophilia caused widespread mutations factor viii gene high spontaneous mutation rate gene means roughly mutations private study aimed describe approaches used confirm private disease causing mutations cohort belgian patients studied unrelated families presence intron intron inversion southern blotting polymerase chain reaction pcr multiplex ligation dependent probe amplification mlpa assay used detect large genomic rearrangements detection point mutations performed dna sequencing predicting causal impact new non synonymous changes studied two general strategies molecular approaches family cosegregation evaluation implicated codon based phylogenic separated species absence mutation general belgian population bioinformatics approaches analyse potential functional consequences missense mutations among patients addition common intron intron inversions well large deletions duplications different point mutations identified reported hamsters database novel including null variants rna analyses confirmed causal effect mutations located splice site consensus missense mutations whose causality demonstrated molecular approaches bioinformatics article reports several strategies evaluate deleterious consequences unreported substitutions large cohort patients
fefd hydrogenases catalyze reversible production hydrogen gas protons electrons mechanism catalysis still subject debate report describe pre steady state photoreduction methodology correlating putative intermediates reactivity fefe hydrogenase thermotoga maritima method rapidly formed photochemically pulsed laser excitation intermolecular active site dynamics followed nanosecond time resolved visible infrared spectroscopy respectively results kinetically validate red sred intermediates strongly supporting vast body literature involvement proton reduction
novel oral chymase inhibitor sun clinical development treatment atopic dermatitis study vitro vivo metabolic profiles sun compared severe combined immunodeficiency scid mice chimeric mice humanized liver humans vitro experiments using liver microsomes predominant metabolites sun glucuronide scid mice hydroxylated metabolite chimeric mice humans single oral dose sun scid chimeric mice glucuronidation major metabolic pathway scid mice parent compound ring opening form demethylated form glucuronidation detected higher levels chimeric mice compared scid mice patients orally treated using sun days parent compound highest concentration plasma identified major metabolites first report sun metabolic information human addition based similarities metabolic profiles chimeric mice humans concluded chimeric mice useful predicting sun metabolism humans early stages drug development
human abca new member atp binding cassette abc transporter family transports certain lipophilic drugs digoxin investigate roles transporter cloned mouse homologue abca mouse heart cdna library named abcaa deduced mouse abcaa protein identical human abca possesses features common abc superfamily found abcaa mainly expressed liver heart similar human abca evaluated effect acute digoxin substrate abca intoxication mrna expression abca using northern blotting non coding region probe avoid cross hybridization abca genes following acute digoxin infusion mrna expression abca significantly reduced liver injection vehicle treatment heart kidney real time quantitative polymerase chain reaction analysis confirmed reduction abcaa mrna similar reductions abca abca abcab abca mrna also observed comparable amount digitoxin affect abcaa mrna expression liver results suggest abca may play role digoxin metabolism liver
several eel species undergone extensive declines local global level aim study identify reasons collapse european eel anguilla anguilla stock important area biodiversity conservation comacchio lagoon italy order support development eel conservation plans records silver eel catches comacchio describe total migratory population cover period data accompanied information related habitat loss local factors role local factors decline local stock investigated additional information literature also used discuss effects global factors including glass eel harvest aquaculture climateoceanographic changes habitat loss pollution parasitism three eel species anguilla anguilla japonica anguilla rostrata records comacchio provided significant information effects local factors local eel populations past however current population collapse started could explained local factors literature global factors suggests three eel species combined threat various factors correlations european aquaculture production data compared comacchio yields published data european eel glass eel fisheries found highly significant aquaculture depends entirely wild caught glass eels seems play key role decline natural stocks conservative estimates using fao data showed current numbers glass eels needed support aquaculture production europe asia exceeds specimens requirement largely supplied anguilla glass eels explain decline eel populations since glass eel trade expanded international level copyright john wiley sons ltd
quail potentially important avian model molecular studies major drawback inability sex visually weeks age molecular sexing therefore absolute requirement animals sampled age low cost method using common laboratory equipment based allele specific multiplex polymerase chain reaction developed undertake reliable molecular identification sex coturnix japonica directly hatching simple method works feathers collected behind neck newly hatched quail includes internal controls pcr limit risks error males females discriminated basis presence one two amplicons respectively
hydroxyglutarate important epigenetic regulator potential roles cancer stem cell biology enantiomer oncometabolite generated ketoglutarate mutant isocitrate dehydrogenase whereas generated lactate dehydrogenase malate dehydrogenase response hypoxia acidic common feature hypoxia well tumor stem cell microenvironments hypothesized may regulate cellular levels herein report cytosolic acidification normoxia moderately elevated cells boosting endogenous substrate levels stimulated elevation studies isolated lactate dehydrogenase malate dehydrogenase revealed generation enzymes stimulated severalfold acidic relative normal physiologic addition acidic found inhibit activity mitochondrial removal enzyme dehydrogenase stimulate reverse reaction isocitrate dehydrogenase carboxylation isocitrate furthermore acidic known stabilize hypoxia inducible factor hif known inhibitor hif prolyl hydroxylases hypothesized may required acid induced hif stabilization accordingly cells stably overexpressing dehydrogenase exhibited blunted hif response acid together results suggest acidosis important previously overlooked regulator accumulation oncometabolic events implications hif signaling
beta hydroxysteroid dehydrogenase type deficiency beta hsd congenital adrenal hyperplasia rare cause ambiguous genitalia resulting abnormal virilisation describe case ambiguous genitalia misdiagnosed androgen insensitivity syndrome correct diagnosis made adrenarche genotyping demonstrated compound heterozygosity two alleles previously described alathr novel gln variant suggest adrenarche unmasked condition driving cortisol production rates caused mutant bhsd enzyme become rate limiting cortisol production case illustrates markedly different effects condition may androgen production compared glucocorticoid mineralocorticoid production also demonstrates current guidelines based urinary steroids cortisol sufficiency may arrive correct diagnosis underlines importance gene testing work disorders sexual differentiation
year old female diagnosed cell histiocyte rich large cell lymphoma complete remission six cycles rituximab combined chemotherapy developed severe anemia reticulocytopenia bone marrow erythroid hypoplasia diagnosed pure red cell aplasia prca accompanied coombs negative autoimmune hemolytic anemia evidenced lack glycophorin positive cells bone marrow haptoglobin detection level high titer rbc bound igg anti erythropoietin receptor epor antibody detected serum oligoclonal alpha beta gamma delta cells also detected peripheral blood southern blotting analysis parvovirus dna detected pcr although treatment rituximab limited efficacy specifically hemolysis subsequent cyclosporine therapy led prompt recovery erythropoiesis disappearance anti epor antibody oligoclonal cells first case report anti epor antibody associated prca patient malignant lymphoma treated successfully cyclosporine
better understanding human metabolism relationship diseases important task human systems biology studies paper present high quality human metabolic network manually reconstructed integrating genome annotation information different databases metabolic reaction information literature network contains nearly metabolic reactions reorganized human specific metabolic pathways according functional relationships analysis functional connectivity metabolites network bow tie structure found previously structure analysis reconfirmed furthermore distribution disease related genes network suggests substrates subset bow tie structure flexibility parts
black fly species simulium feuerborni species group simulium nevermannia cameron highland peninsular malaysia previously regarded feuerborni edwards originally described east java described simulium pairoti nov based complete life stages high intraspecific variations arrangement six pupal gill filaments length stalk ventral paired filaments length anterodorsal projection cocoon noted species new species readily distinguished congeners characters male genitalia simple lamellate ventral plate short inwardly twisted styles several parameral hooks simple narrow median sclerite morphological data reported herein plus chromosomal molecular data presented elsewhere support pairoti novel pseudocryptic species elsevier rights reserved
capillary gas chromatographic method developed validated separation phenolic metabolites human urine following intravenous infusion racemic bupivacaine subsequent formal identification quantification line mass spectrometry elsevier science rights reserved
challenge protein based therapies ability produce biologically active proteins ensured delivery various approaches utilised including fusion protein transduction domains protein biomolecule interest compounding issue lack specificity efficiency indeed whether protein fusions actually translocated cell merely artefact fixation process present novel platform allowing inducible export uptake protein interest system utilises combination tetracyline repressor system combined fusion protein containing terminal signal peptide human chorionic gonadotropin beta subunit terminal poly arginine domain efficient uptake target cells novel platform validated using enhanced green fluorescent protein gene interest doxycycline efficiently induced expression fusion protein human chorionic gonadotropin beta subunit facilitated export fusion protein cell culture media finally fusion protein able efficiently enter neighbouring cells target cells mediated poly arginine cell penetrating peptide importantly addressed issue whether observed uptake artefact fixation process indeed genuine translocation addition platform provides number potential applications diverse areas stem cell biology immune therapy cancer targeting therapies elsevier rights reserved
fish egg envelope composed several glycoproteins called zona pellucida proteins conserved among vertebrate species euteleost fishes synthesize proteins liver otocephalans synthesize growing oocyte investigated proteins japanese eel anguilla japonica belonging elopomorpha diverged earlier euteleostei otocephala five major components egg envelope purified partial amino acid sequences determined sequencing cdna cloning revealed eel egg envelope composed four zpc homologues one zpb homologue four five eel ezp proteins possessed transmembrane domain found proteins euteleostei otocephala diverged later found vertebrate proteins result suggests fish proteins originally possessed transmembrane domain lost evolution northern blotting pcr revealed ezp transcripts present ovary liver phylogenetic analyses fish genes showed ezps formed group fish genes expressed ovary distinct group genes expressed liver results support hypothesis fish proteins originally synthesized ovary site synthesis switched liver evolutionary pathway euteleostei
full length cdna slctlp encoding chymotrypsin like serine protease cloned spodoptera litura cdna encoded putative serine protease predicted molecular mass kda contained serine protease catalytic motif gdsggpl temporal spatial expression slctlp mrna protein detected northern blotting pcr qpcr western blotting analyses revealed slctlp mrna protein mainly present foregut midgut instar larvae feeding stages situ hybridization immunohistochemistry confirmed slctlp mrna protein predominately present midgut expression gene induced bacterial infection juvenile hormone iii induced gene expression hydroxyecdysone impact expression expression slctlp mrna protein regulated starvation regulated feeding slctlp protein detected lumen residues anterior middle posterior midgut feces feeding instar larvae suggesting secreted epithelium lumen gut results suggest slctlp gene may involved digestive process food proteins feeding stages larval development elsevier ltd rights reserved
genetic transformation protocol green ash fraxinus pennsylvanica hypocotyl explants developed green ash hypocotyls transformed using agrobacterium tumefaciens strain eha harboring binary vector pqgr containing neomycin phosphotransferase nptii beta glucuronidase gus fusion gene enhanced green fluorescent protein gene pre cultured hypocotyl explants transformed presence acetosyringone using sonication plus min vacuum infiltration kanamycin used selecting transformed cells adventitious shoots regenerated murashige skoog medium supplemented benzylaminopurine thidiazuron adenine sulfate coconut water gus polymerase chain reaction pcr positive shoots cut ends hypocotyls produced via intermediate callus stage presence gus nptii genes gus positive shoots confirmed pcr copy number nptii gene pcr positive shoots determined southern blotting three transgenic plantlets acclimatized greenhouse transformation regeneration system using hypocotyls provides foundation agrobacterium mediated transformation green ash studies underway using construct containing cryda protein bacillus thuringiensis genetic transformation green ash
ggggcc repeat expansion corf gene recently identified major cause familial sporadic amyotrophic lateral sclerosis frontotemporal dementia suggestion expansions may rare cause parkinsonian disorders progressive supranuclear palsy psp multiple system atrophy msa corticobasal degeneration cbd screening corf gene patients features corticobasal syndrome cbs detected expansion patients confirmed southern blotting series patients clinically diagnosed psp found patient intermediate repeat length also screened corf expansion large series neuro pathologically confirmed samples msa psp cbd patients found ggggcc repeats although results still need confirmed larger cohort cbs cbd patients data suggest presence family history motor neuron disease features patients cbs clinical psp screened corf repeat expansion addition confirm corf expansions associated pathologically confirmed msa psp cbd large series cases authors published elsevier inc rights reserved
hallmark male germ cell gene expression generation alternative polyadenylation cell specific mrnas many utilize noncanonical uaaa independent polyadenylation signals cleavage factor cflm component pre mrna cleavage polyadenylation protein complex direct uaaa independent polyadenylation site selection somatic cell mrnas report cflm subunits nudt cpsf cpsf highly enriched mouse male germ cells relative somatic cells subunits expressed spermatogenic cell mrnas shorter corresponding somatic transcripts complementary dna sequencing northern blotting revealed shorter nudt cpsf mrnas generated alternative polyadenylation male germ cells using proximal poly signals sets transcripts contain cflm binding sites within untranslated regions suggesting autoregulation cflm subunit formation male germ cells cfim subunit mrna protein levels exhibit distinct developmental variation spermatogenesis indicating stage dependent translational posttranslational regulation cfim binding sites identified near ends numerous male germ cell transcripts utilizing uaaa independent sites together findings suggest cfim complexes participate alternative polyadenylation directed noncanonical poly signals spermatogenesis
novel independent cell subset characterized high expression interleukin recognized subset although cells important many diseases contribution allergic rhinitis remains unclear therefore first determined whether cells presentin mouse model investigated involvement distribution cell subsets symptoms treating mice anti antibodies abs anti abs administered intranasally rechallenge ovalbumin ova induced balb mice measured nasal rubbing motion sneezing eosinophils well cell percentage ifn gamma mrna protein bet mrna cell percentage mrna protein gata mrna cell percentages mrna protein irf mrna cell percentage mrna protein ror mrna treg treg cell percentage foxp mrna responses nasal mucosa treatment anti abs markedly reduced nasal rubbing sneezing eosinophil infiltration responses increased treg response findings emphasize importance pathogenesis suggest anti treatment may effective therapeutic strategy
novel type responsive star polymer based beta cyclodextrin beta synthesized covalently conjugated enzyme impact self assembly behavior enzyme activity investigated design azide containing polymer beta ptba synthesized via atom transfer radical polymerization tert butyl acrylate using beta multifunctional initiator final product beta paa obtained via hydrolysis covalently conjugating pectinase onto responsive polyacrylic acid paa arms paa change conformation self assembly altered leading nanostructure micellar nanoparticles aqueous solution affecting activity immobilized pectinase results proved fluorescence spectroscopy dynamic light scattering system proves activity immobilized enzyme tailored predictably responsive polymer holds great potential controllable delivery enzymes international union biochemistry molecular biology inc
number methods exist transformation lymphocytes epstein barr virus vitro immortalized cell lines developed new method powerful simple strategy establishment lcls red blood cell lysis method method simplified pbmc separation procedure red blood cell removal used little whole blood establishing ebv immortalized cell lines proliferate large cell numbers relatively short amount time success rate method simple reliable time saving applicable treating large number clinical samples
resveratrol synthase gene cloned peanut plant arachis hypogaea pcr transformed purple sweet potato ipomoea batatas agrobacterium mediated transformation stem sections infected bacterial solution min cocultured days infected explants cultured media containing kanamycin naa bud induction containing kanamycin naa root formation bud root induction rates respectively regenerated plants obtained positive plants pcr southern blotting analyses high level resveratrol glucoside dry weight resveratrol detected transformed plants hplc study also provides stable genetic transformation plant regeneration method metabolic modification purple sweet potato
simple immobilization method candida rugosa lipase superparamagnetic feo nanoparticles described feo nanoparticles coated pei candida rugosa lipase adsorbed particles via electrostatic interactions immobilization resulted marginal simultaneous purification however immobilized preparation showed higher transesterification activity low water media also efficient kinetic resolution phenylethanol within
strategy growing online biochemistry courses presented based successes ecampus oregon state university four free drawing cards key effortyoutube videos itunes online free course content open educational resource textbookbiochemistry free easy fun set educational songs known metabolic melodies international union biochemistry molecular biology
study undertaken analyze clinical presentation pulmonary function pathological features two female siblings neonatal pulmonary surfactant metabolism dysfunction type mim clinical records siblings examined genes encoding surfactant protein sftpb surfactant protein sftpc atp binding cassette transporter protein abca analyzed direct sequencing southern blotting infants homozygous deletion abca including exons well start aug codon putative golgi exit signal motif dense abnormalities lamellar bodies electron microscopy absence abca immunohistochemical staining agreement presence two null alleles addition increased lipid synthesis suggested compensatory mechanism clinical course two sisters influenced different environmental factors like time needed molecular confirmation ventilatory assistance adopted occurrence infections less aggressive clinical approach improve course disease prognosis always poor development fast molecular test able detect also structural variants needed pediatr pulmonol wiley periodicals inc
total antibiotic resistant propionibacteria isolated face egyptian acne patients dermatology staff controls erythromycin clindamycin resistant propionibacteria chosen detect ern gene detected strains however strains also erm gene carried confers inducible resistance telithromycin erythromycin clindamycin dna sequences pcr amplification products new erm mediated antibiotic resistance showed identity erm gene isolated corynebacterium jeikeium southern blotting analysis erm specific probe shows two copies resistance gene integrated within chromosomal dna first report erm carried propionibacterium acnes outside europe whilst gene associated strains data suggests genetic element carrying erm high carriage erm may affect efficacy clindamycin macrolides acne treatment egypt elsevier ltd rights reserved
transgenic male sterile line upland cotton generated ectopic expression monooxygenase mnx gene arabidopsis thaliana via agrobacterium mediated transformation bacterium harbored plasmid pbinplus carrying mnx coding sequence together gus reporter gene former driven promoter male sterility gene arabidopsis latter control camv promoter twenty seven putative transgenic plants obtained showed gus activity positive signals nptii mnx genes pcr analysis also showed male sterility extent confirmed southern blotting one copy nptii mnx gene integrated genome plants expressed male sterility higher degree northern blotting assay also demonstrated transgenes stably transcribed genome transgenic plants generation male sterile plants usually display lower plant height shortened internodes shrunken anthers without pollen grains abortive pollen grains unusual leaves deeper multi lobes microscope observations meiosis processes pollen mother cells pmcs showed abortion pollen grains mainly resulted abnormalities meiosis direct degeneration pmcs degenerations dyad tetrads amitosis lagging chromosomes multi polar segregations chromosomes study indicates method developing novel cotton male sterile materials potential application agriculture engineering male sterility important crops
type iii polyketide synthase pks cdna corresponding gene fmpks isolated rhizomes fallopia multiflora thunb polygonaceae full length fmpks cdna containing open reading frame encoding amino acid residues long protein coding sequence gene interrupted three introns different gene structure type iii pks genes studied far containing one intron conserved site except recently cloned gene pcpks polygonum cuspidatum phylogenetic analysis revealed shares close relationship rheum tataricum stilbene synthase formes group functionally diverse chalcone synthase like enzymes southern blotting showed three four copies fmpks gene genome expression pattern fmpks transcript determined northern blotting high expression levels detected rhizomes old stems lowest levels found old leaves pattern strongly correlates accumulation major bioactive principles called tetra hydroxy stilbene beta glucoside suggesting fmpks might play important role biosynthesis
abcc gene codes protein abcc involved transportation different classes drugs outside cells various important drugs transported abcc include antiviral anticancer drugs well endogenous molecules bile acids cyclic nucleotides folates prostaglandins steroids alternative splicing generates multiple mrnas encode protein isoforms diverse functions study identified novel transcript mouse abcc gene using combination bioinformatics molecular biology techniques transcript found different reported transcript different first exon found located previously identified first intron newly identified transcript found expressed across different tissues studied different developmental stages expression level novel reported transcripts studied using quantitative real time pcr conceptually translating novel transcript various post translational modifications studied translation efficiency predicted half life encoded protein isoforms analysed silico molecular modelling performed compare structural differences isoforms diversity termini protein isoforms explains diverse function abcc mouse elsevier rights reserved
abiotic stresses especially salinity drought major limiting factors plant growth crop productivity attempt develop salt drought tolerant tomato dna cassette containing tobacco osmotin gene driven cauliflower mosaic virus promoter transferred tomato solanum lycopersicum via agrobacterium mediated transformation putative transgenic plants screened pcr analysis selected transformants evaluated salt drought stress tolerance physiological analysis generations integration osmotin gene transgenic plants verified southern blot hybridization transgenic expression osmotin gene verified pcr northern blotting plants progenies transformed untransformed plants tested salt drought tolerance subjecting different levels nacl stress withholding water supply respectively results different physiological tests demonstrated enhanced tolerance salt drought stresses transgenic plants harboring osmotin gene compared wild type plants transgenic lines showed significantly higher relative water content chlorophyll content proline content leaf expansion wild type plants stress conditions present investigation clearly shows overexpression osmotin gene enhances salt drought stress tolerance transgenic tomato plants
abscisic acid aba responsive element binding proteins arebs basic domain leucine zipper transcription factors bind aba responsive element abre promoter regions aba inducible genes plants novel bzip transcription factor gene gmbzip encoding amino acids conserved bzip domain composed amino acids isolated salt tolerant soybean tiefeng southern blotting showed one copy present soybean genome phylogenetic analyses showed gmbzip belonged areb subfamily bzip family closely related atabf ostrab expression gmbzip highly induced aba drought high salt low temperature gmbzip expressed soybean roots stems leaves different stress conditions gmbzip localized inside nuclei transformed onion epidermal cells overexpression gmbzip enhanced responses transgenic plants aba triggered stomatal closure stresses potentially leading improved tolerances several abiotic stresses high salt low temperature drought transgenic plants furthermore overexpression gmbzip affected expression aba stress related genes involved regulating stomatal closure arabidopsis aba drought high salt stress conditions areb elements detected promoter region aba stress related genes suggesting gmbzip regulates aba response stomatal closure mediated downstream genes transgenic arabidopsis moreover gmbzip used improve drought tolerance trait chinese wheat varieties functional analysis showed overexpression gmbzip enhanced drought tolerance transgenic wheat transcripts gmbzip detected transgenic wheat using pcr addition gmbzip overexpression result growth retardation transgenic plants suggesting gmbzip may valuable genetic resource engineering stress tolerance crops
accumulated data shown human somatic cells tissues show irreversible telomere shortening age strong associations telomere attrition aging related diseases including cancers diabetes cognitive disorders although largely accepted telomere attrition one major causes aging related disorders critical aspects telomere biology remain unresolved especially lack standardized methodology quantification telomere length another frustrating issue potentially promising methods safe prevention telomere erosion telomere elongation devised review several methods quantification telomere length currently utilized worldwide considering advantages drawbacks also summarize results recent studies human cells tissues mainly using quantitative fluorescence insitu hybridization southern blotting including derived patients progeria prone werner syndrome trisomy several strains induced pluripotent stem cells discuss possible merits using telomere shortness indicator new marker diagnosis precancerous states aging related disorders addition describe newly found factors thought impact telomere dynamics providing new avenue examining unsolved issues related telomere restoration maintenance geriatr gerontol int suppl
acetate found inhibitory effect activity carbohydrate responsive element binding protein chrebp cultured hepatocytes transcription factor regulates several genes required conversion glucose fatty acids liver aim study investigate whether oral administration acetate would contribute reducing lypogenic genes protecting obesity orally injected acetate obesity linked type diabetic otsuka long evans tokushima fatty oletf rats treatment acetate showed marked reduction lipid accumulation adipose tissue protection accumulation fat liver improved glucose tolerance analysis northern blotting revealed transcripts several lipogenic genes liver oletf rats decreased acetate treatment basis results indicated acetate potential compound improve obesity obesity linked type diabetes
acute myeloid leukemia aml characterized proliferation immature myeloid lineage blasts due heterogeneity high rate acquired drug resistance relapse new treatment strategies needed demonstrate ifn promotes aml blasts act effector cells within context antibody therapy treatment ifn drove aml blasts toward differentiated state wherein showed increased expression related markers hla well fcri mediates effector responses therapeutic antibodies importantly ifn able regulate target therapeutic antibody daratumumab antigen effector receptor fcri simultaneously regulated aml blasts tested whether ifn treatment aml cell lines thp could stimulate target one another addition daratumumab results showed ifn significantly increased daratumumab mediated cytotoxicity measured release lactate dehydrogenase release assays also found combination ifn activation fcr led release granzyme aml cells finally using murine nsg model subcutaneous aml found treatment ifn plus daratumumab significantly attenuated tumor growth taken together studies show novel mechanism daratumumab mediated killing possible new therapeutic strategy aml
acyclovir resistance rarely seen herpes simplex virus hsv type encephalitis prevalence rates vary immunocompetent patients christophers fife immunocompromised patients stranska report year old immunocompetent negative hiv antigen antibody testing female patient without previous illness developed febrile prodromal stage aphasia psychomotor slowing cerebral magnetic resonance imaging cmri showed right temporal insular hyperintense lesions spreading contralateral temporal lobe cerebrospinal fluid csf analysis yielded lymphocytic pleocytosis elevated protein level polymerase chain reaction testing hsv type showed positive result repeat lumbar puncture hsv type encephalitis diagnosed intravenous acyclovir treatment initiated acyclovir treatment intensified due clinical deterioration ongoing pleocytosis progression cmri days initiation antiviral therapy parallel acyclovir resistance testing showed mutation thymidine kinase gene position prompting foscarnet therapy patient condition improved dramatically weeks acyclovir resistance rare considered case clinical worsening patient condition knowledge first report acyclovir resistance hsv type encephalitis immunocompetent previously healthy patient austria
acyl coa binding protein acbp also known diazepam binding inhibitor dbi identified diverse species evolutionarily conserved plants animals recent study acbp cdna haacbp encoding amino acids isolated cotton bollworm helicoverpa armigera isolated protein highly homologous acbp present bombyx mori midgut highly expressed northern western blot analyses revealed hacbp expressed predominantly midgut moreover northern blotting revealed haacbp probably stimulated high juvenile hormone titer ecdysis increased along feeding post ecdysis immunohistochemistry midgut revealed haacbp localized columnar cells data northern blotting immunohistochemistry suggested haacbp expressed larval period probably responsible nutrition absorption however western blot analysis midgut different developmental stages indicated haacbp upregulated larval molting metamorphosis suggested haacbp expression posttranscriptionally regulated
acyl coenzyme cholesterol acyltransferase acat converts intracellular free cholesterol cholesterol ester storage lipid droplets plays important role formation macrophage derived foam cells atherosclerotic lesions serotonin potent vasoconstrictor released activated platelets increases uptake oxidized low density lipoprotein ldl macrophages leading foam cell formation contributes development atherosclerotic plaque however yet known whether affects acat expression human monocyte macrophages molecular mechanism enhanced foam cell formation remains unclear examined effects acat expression differentiation cultured human monocytes macrophages expression acat protein receptor increased time dependent manner increased acat activity concentration dependent manner days primary monocyte culture immunoblotting analysis showed increased acat protein expression level two fold effect abolished completely receptor antagonist sarpogrelate major metabolite protein inactivator gdp beta protein kinase pkc inhibitor rottlerin src family inhibitor mitogen activated protein kinase mapk kinase inhibitor northern blotting analysis indicated among four acat mrna transcripts levels transcripts selectively regulated similar fold results present study suggested may play crucial role macrophage derived foam cell formation regulating acat expression via receptor protein src pkc mapk pathway contributing progression atherosclerotic plaque elsevier ireland ltd rights reserved
adaptation produces hard soft selective sweeps depending supply adaptive genetic polymorphism evolution pesticide resistance parasites striking example rapid adaptation shed light selection processes plasmopara viticola causes grapevine downy mildew forms large populations resistance rapidly evolved due excessive fungicide use investigated pathways fungicide resistance evolved plant pathogen determine whether hard soft selective sweeps involved analysis nucleotide polymorphism field isolates bordeaux region revealed recurrent mutations cytb cesa conferring resistance quinone outside inhibiting qoi carboxylic acid amide caa fungicides respectively higher levels genetic differentiation observed nucleotide positions involved resistance neutral microsatellites consistent local adaptation pathogen fungicide treatments hitchhiking found selected sites neighbouring polymorphisms cytb cesa confirming multiple origins resistance alleles assessed resistance costs evaluating fitness isolates measurements multiple quantitative pathogenicity traits controlled conditions significant differences found sensitive resistant isolates suggesting fitness costs may absent negligible results indicate rapid evolution fungicide resistance viticola involved soft sweep
adipose tissue functionally composed brown adipose tissue white adipose tissue unique thermogenic capacity brown adipose tissue results expression uncoupling protein mitochondrial inner membrane basis recent findings adult humans functionally active brown adipose tissue recognized playing much important role human metabolism previously thought importantly brown like adipocytes recruited white adipose tissue upon environmental stimulation pharmacologic treatment change associated increased energy expenditure contributing lean healthy phenotype thus promotion brown like adipocyte development white adipose tissue offers novel possibilities development therapeutic strategies combat obesity related metabolic diseases review summarize recent advances understanding molecular mechanisms involved recruitment brown like adipocyte white adipose tissue copyright john wiley sons ltd
adomet radical enzymes involved processes cofactor biosynthesis anaerobic metabolism natural product biosynthesis enzymes utilize reductive cleavage adenosylmethionine adomet afford methionine transient deoxyadenosyl radical subsequently generates substrate radical species harnessing radical reactivity adomet radical enzyme superfamily responsible incredible diversity chemical transformations structural analysis reveals family members adopt full partial triose phosphate isomerase mutase tim barrel protein fold containing core motifs responsible binding catalytic cluster adomet evaluate twenty structures adomet radical enzymes classify two categories traditional thic like named structure amino hydroxymethyl methylpyrimidine phosphate synthase thic light new structural data reexamine traditional structural motifs responsible binding cluster adomet compare contrast motifs thic case also review structural data combine biochemical spectroscopic computational data help understand key features enzyme superfamily energetics triggering molecular mechanisms adomet reductive cleavage article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
advanced non small cell lung cancer nsclc long diagnosis treatment options poor outcomes however recent discoveries molecular biology nsclc changing way treated driver mutations cause uncontrolled cancer cell proliferation discovered types nsclc led discovery therapies target specific driver mutation advanced nsclc halt cancer progression article reviews standard treatment nsclc explores targetable mutations nsclc available targeted treatments treatment obstacles future targeted therapy nsclc
aflatoxin afb major risk factor hepatocellular carcinoma hcc humans however mice major animal model study afb carcinogenesis resistant due high constitutive expression mouse liver glutathione transferase subunit mgsta lacking humans objective establish mouse model afb toxicity could used study mechanisms toxicity relevant human disease mgsta knockout mouse responds toxicants afb manner similar humans exons mgsta replaced neomycin cassette homologous recombination southern blotting pcr western blotting measurement afb dna adduct formation used evaluate mgsta mice mice deletion exons mgsta gene expected well lack mgsta expression mrna protein levels three hours injection afb mgsta mice fold afb dna adducts livers similarly treated wild type mice addition mgsta mice die massive hepatic necrosis afb doses minimal toxic effects mice conclude mgsta mice sensitive acute cytotoxic genotoxic effects afb confirming crucial role gsta subunit protection normal mice afb toxicity propose mgsta mouse useful model study interplay risk factors leading hcc development humans well testing additional possible functions mgsta elsevier inc rights reserved
africa faces many health challenges despite sustained growth development past decade contributory factors lack financial resources inadequate health professional workforce high burden communicable diseases increasing burden non communicable diseases rheumatology services limited non existent many parts sub saharan africa past decade partnerships international academic institutions resulted progress training rheumatologists health professionals development rheumatology services countries kenya nigeria zambia basic diagnostic tests biological agents arthroplasty either unavailable affordable majority population urbanization resulted change epidemiology rheumatic diseases increase prevalence gout rheumatoid arthritis systemic lupus erythematosus scleroderma past four decades future growth rheumatology services depend identifying committed individuals underserved countries training supporting educate medical students physicians health professionals home countries need develop models care using categories health workers identify prevention strategies cost effective management programs low resource settings africa affords opportunity collaborative research including genetic epigenetic studies improve understanding many rheumatic diseases
agroinfiltration tested method inoculation chrysanthemum plants chrysanthemum stunt viroid csvd binary vectors harboring dimeric csvd sequences sense antisense orientations constructed agrobacterium transfected binary vectors infiltrated chrysanthemum leaves northern blotting reverse transcription polymerase chain reaction analysis showed local infection established within days systemic infection within days csvd polarities showed difference infectivity study showed agroinfiltration chrysanthemum plants easy rapid cost effective method csvd inoculation elsevier rights reserved
aim tested performance tissue homogenizer bead beater millmix tehtnica domel grinding bone samples skeletal remains sub sequential extraction dna typing human identification short tandem repeats strs methods analyzed bone dna extracts obtained femurs tibias bones femurs tibias analyses repeated two femurs three times evaluate repeatability extraction method grinding machine used dna obtained demineralizated bone powder samples quantified using human quantifiler investigator quantiplex kit str typing performed using ngm investigator essplex plus kit evaluate quality bone powder tested extraction method results profiles obtained dna extracts full acceptable quite acceptable profiles suitable interpretation represent success rate bones analyses repeated two three times results obtained show high degree repeatability since similar results obtained almost repetition conclusion grinding bone samples using millmix proven highly successful recovery high quality powder skeletal remains believe results obtained contribute possibilities using automated devices grinding bone samples would shorten procedures obtaining high quality bone powder skeletons forensic laboratories
aim generate gpr gene knockout mouse model investigate phenotypes biological function gpr gene methods bacterial artificial chromosome retrieval methods used constructing targeting vector using homologous recombination microinjection technology gpr knockout mouse model mixed background generated mice genotyped polymerase chain reaction pcr analysis tail dna fed standard laboratory chow diet animals sexes used phenotypes assessed histological biochemical molecular physiological analyses semi quantitative reverse transcription pcr northern blotting used determine tissue distribution gpr mrna beginning age body weights recorded every food feces blood organ samples collected analyze food consumption fecal quantity organ weight constituents blood plasma trendelenburg preparation utilized examine intestinal motility wild type gpr mice age results gpr mrna highly exclusively detected intestinal tissues targeted deletion gpr adult mice resulted reduced body weight gain mutant mice exhibited increased frequency peristaltic contraction slow wave potential small intestine gpr mice gained weight average gpr mice since respectively frequency small intestinal peristaltic contraction increased gpr mice age frequency peristalsis intraluminal pressure cmho peristalsis min gpr intestine peristalsis min intestine age frequency peristaltic contraction intraluminal pressure cmh peristalsis min mice whereas gpr mice frequency contraction peristalsis min respectively cmh cmho frequency slow wave potential gpr intestine min intraluminal pressure cmh also higher intestine min conclusion generated mouse model targeted deletion gpr found reduced body weight increased intestinal contraction frequency animal model baishideng publishing group limited rights reserved
aims semisynthetic derivatives antimalarial drug artemisinin may also possess anticancer properties ability detect artemisinin uptake distribution cells would facilitate live cell imaging without labelling study describes mid range infrared absorption spectra three artemisinin variants attempts detect presence simple cell model erythrocytes cytotoxicity assays assess potential anticancer properties bladder cancer cells methods mid range fourier transform infrared spectra obtained dry preparations dihydroartemisinin dha artesunate art artemether arte erythrocytes prepared normal blood incubated min degrees three artemisinin derivatives cytospin preparations prepared aluminium foil spectroscopy potential growth inhibition bladder carcinoma cell line assessed dimethylthiazol diphenyltetrazolium bromide residual viable biomass method results spectra obtained three native compounds repeat scans weeks showed art arte stable stored manufacturer recommendations dha exhibited marked changes period possible subtraction detect dha cytospins art arte fit subtraction spectrum native compound dha art showed strong cytotoxic potential cells conclusions artemisinin derivatives tested exhibit unique mid range infrared absorption spectra used monitor degradation dha detected subtraction loaded erythrocytes rendering future imaging studies feasible cytotoxic efficacy cells suggests bladder cancer possible target disease
aims hypothesis aim study investigate changes insulin sensitivity expression gene encoding resistin retn adipocytes long term nitric oxide deficient rats methods male sprague dawley rats received omega nitro larginine methyl ester name drinking water weeks control rats received plain drinking water experimental period changes plasma glucose insulin peptide levels measured administration name weeks insulin sensitivity evaluated vivo vitro insulin binding assay also performed determine number binding affinity insulin receptors adipocytes adipocyte retn mrna levels examined using northern blotting results successful induction deficiency demonstrated increase systemic blood pressure difference plasma glucose levels found two groups compared control rats plasma insulin peptide levels significantly decreased deficient rats insulin sensitivity significantly increased insulin stimulated glucose uptake insulin binding capacity binding affinity significantly increased adipocytes isolated deficient rats addition adipocyte retn mrna levels plasma resistin levels significantly decreased deficient rats retn mrna levels negatively correlated insulin sensitivity conclusions interpretation insulin sensitivity increased deficient rats associated insulin binding capacity downregulated retn expression findings suggest plays regulatory role metabolism dysregulation production may result development metabolic disorders
allorecognition capability organism recognize related tissues colonial ascidian botryllus schlosseri comprises five genetically distinct divergent species clades contains two adjacent genes control allorecognition fuhc sec fuhc genes characterized extensively clade highly polymorphic using alleles populations across range clade investigated type strength selection maintaining variation fuhc genes exhibit higher within population variation lower population differentiation measures neutral loci fuhc genes contain substantial number codons posterior probability fuhc sec fuhc also polymorphisms shared clade clade present prior speciation trans species polymorphisms results provide robust evidence fuhc genes evolving balancing selection elsevier ltd rights reserved
alpha farnesene volatile sesquiterpene natural coating apple fruit oxidation products sesquiterpene thought induce superficial scald apple cdna encoding farnesene synthase converting farnesyl diphosphate farnesene obtained using pcr peel apple fruit accession comparison sequence cdna afs gene registered genbank showed sequences shared high similarity nucleotide sequence homology deduced amino acid sequence southern blotting suggested one copy genome apple northern blotting showed afs gene played key role farnesene synthesis days apples removed cold storage warmed room temperature expression afs gene influenced treatment dpa mcp
alpha glucans present virtually domains life glucose chains linked alpha alpha linked branches form important storage carbohydrates cells likely reason alpha glucans generally considered bioactive molecules beta glucans nevertheless known depending source many alpha glucans play important roles modulators immune response recent efforts attempted elucidate mechanisms alpha glucans exert immunostimulant effects however main challenge accurate identification receptors immune cells involved recognition review adjuvant properties reported polysaccharides ultimately focus alpha glucans structural characteristics molecular weight solubility derivatization influence immunostimulatory properties final point discuss potential associated challenges using polysaccharides adjuvants particularly mucosal vaccination elsevier ltd rights reserved
alteration mitogen activated protein map kinase signaling transgenic mice ameliorate post myocardial infarction remodeling however pre existing changes transgenic hearts clinically unrealistic transgene expression likely affect response injury unknown whether clinically relevant induction transgene expression otherwise normal heart yield similar benefits constitutively active mek amek lacz adeno associated virus aav vectors injected left ventricular chambers mice either coronary ligation hearts evaluated via western blot quantitative polymerase chain reaction histology echocardiography aav mediated amek delivery altered erk expression activation transgenic mice transgene expression immediately detectable plateaued days therefore likely impact acute ischemia would transgenics aavamek injection prior robust expression infarct border zone post remodeling increased border zone wall thickness reduced infarct size versus controls weeks induce global hypertrophy significant improvements local global function observed trends toward preservation volume delivery ligation significantly lowered transgene expression infarct border zone yield structural functional benefits primary benefits observed transgenic mice ameliorated remodeling reduced chronic infarct size achievable via clinically relevant gene transfer amek supporting ongoing translational efforts important differences however observed consideration must given timing distribution transgene delivery expression cell biochem wiley periodicals inc
although great deal progress made toward understanding role abscisic acid aba fruit ripening many components aba signalling pathway remain elucidated strawberry gene homologous arabidopsis gene abi named faabi isolated characterized cdna includes intact open reading frame encodes deduced protein amino acids putative conserved domains determined homology analysis transcriptional analysis showed levels faabi mrna expression declined rapidly strawberry fruit development evidenced real time pcr semi quantitative reverse transcriptionpcr northern blotting analyses suggesting ser thr protein phosphatase ppc encoded faabi may involved fruit ripening negative regulator results tobacco rattle virus induced gene silencing pbi vector mediated overexpression suggested regulation faabi mrna expression levels degreening strawberry fruit could promote inhibit ripening respectively furthermore alteration faabi expression could differentially regulate transcripts set aba responsive ripening related genes including abi abi abi snrk abre chs chi dfr ans ufgt taken together data provide new evidence important role aba regulating strawberry fruit ripening processes type protein phosphatase abi serves negative regulator finally possible core mechanism underlying aba perception signalling transduction strawberry fruit ripening discussed
although equine herpesvirus myeloencephalopathy ehm sporadic relatively uncommon manifestation equine herpesvirus ehv potential causing devastating outbreaks horses till reported ehm outbreaks donkeys mules study describes isolation molecular characterization ehv clinically ehm affected horses mules donkeys ethiopia outbreaks may december incidence ehm cases higher april mid june ehm donkeys severe death without clinical signs paralysis recumbency frequently observed main age affected equines ranged years females affected males incidence neuropathogenic non neuropathogenic variants ehv ehm affected equines ethiopia assessed sequencing dna polymerase gene orf ehv isolates results indicated total clinically affected equines orf genotype orf variant found one donkey analysis orf grouping marker geographical differences showed ethiopian ehv isolates belong geographical group due fatal nature ehv donkeys would interesting examine pathogenesis ehm species present vaccine available ethiopia therefore outbreaks ehv controlled proper management adaptations addition important test efficacy commercial vaccines horses also donkeys mules
although numbers cancer cell lines shown successfully reprogrammed induced pluripotent stem cells ipscs reprogramming oral squamous cell carcinoma oscc pluripotency relation cancer cell type expression pattern pluripotent genes later passage remain unexplored study reprogrammed characterised oral squamous carcinoma cells using retroviral oskm mediated method reprogrammed cells characterized embryonic stem cells escs like morphology pluripotent gene expression via quantitative real time polymerase chain reaction qpcr immunofluorescence staining embryoid bodies formation directed differentiation capacity reprogrammed rep exhibited similar escs morphologies flatten cells clear borders feeder layer reprogrammed rep show escs morphologies grow disorganized morphology critical pluripotency genes oct sox nanog expressed higher rep parental counterpart passage passage rep nanog expression parental counterpart showed significant decrease passage although increased passage level expression similar parental cells rep exhibited pluripotent signals oct sox nanog tra could form presence three germ layers markers rep displayed differentiation capacity adipocytes osteocytes oscc cell line able reprogrammed ipsc like state showed high expression oct sox nanog late passage may provide potential ipsc model study multi stage oncogenesis oscc
although much knowledge enzymology genes coding proteins lipid biosynthesis higher plants relatively little attention paid regulation demonstrated important role cholinephosphate cytidylyltransferase biosynthesis major extra plastidic membrane lipid phosphatidylcholine followed work applying control analysis light induced fatty acid synthesis first application lipid synthesis organism data showed acetyl coa carboxylase important exerting half total control applied metabolic control analysis lipid accumulation important oil crops oilpalm olive rapeseed recent data soybean show block fatty acid biosynthesis reactions exerts somewhat control lipid assembly although clearly important results suggest gene stacks targeting parts overall lipid synthesis pathway needed increase significantly oil yields soybean article part special issue entitled membrane structure function relevance cell physiology pathology therapy elsevier rights reserved
amino acids organic substances essential role function human metabolism important saturate amino acids main components proteins due protein hydrolysis identified amino acids adults children designated essential synthesized human organism ensured via nourishment adults essential amino acids valine leucine isoleucine phenylalanine threonine lysine tryptophan methionine case children add glutamine histidine amino acids synthesized plants due synthesizing plants synthesizing atmospheric mineral nitrogen animals obtaining plants level amino acids recommended fao assimilation important organism study watching compare level amino acids bakery products enriched insulated peas soy
aminoacylase acy important regulating proliferation numerous types cancer however expression mechanisms underlying function acy colorectal cancer remain unclear order investigate expression function acy colorectal cancer tumor tissue blood samples collected analysis patients diagnosed colorectal cancer reverse transcription quantitative polymerase chain reaction analysis western blotting identified significantly increased expression acy mrna colorectal tumor tissue adjacent normal tissue notably increased acy protein levels acy mrna expression found positively correlated tumor stage addition plasma acy concentration increased patients colorectal cancer compared healthy controls furthermore vitro knockdown acy human colorectal cancer cells shown inhibit proliferation increase apoptosis effect found associated activation erk tgf beta signaling conclusion results present study suggest acy promotes tumor progression thus may potential target diagnosis treatment colorectal cancer
ammonia oxidizing bacteria aob major contributors emission nitrous oxide proposed produced reduction report enzyme cytochrome cyt aob nitrosomonas europaea converts hydroxylamine nhoh quantitatively anaerobic conditions previous literature reported enzyme oxidizes nhoh nitrite aerobic conditions although observe formation aerobic conditions concentration stoichiometric nhoh concentration contrast anaerobic conditions enzyme uses oxidizing equivalents convert nhoh enzyme kinetics coupled visible absorption electron paramagnetic resonance epr spectroscopies support mechanism iii nhoh adduct cyt oxidized feno unit species subsequently undergoes nucleophilic attack second equivalent nhoh forming bond bimolecular rate determining step propose results nitric oxide dissociates feno intermediate reacts dioxygen thus direct product cyt activity hypothesize cyt oxidation nhoh contributes emissions nitrifying microorganisms
amyotrophic lateral sclerosis als anadult onsetneurodegenerative disease characterizedby lossofmotor neurons recently identified sod fus mutations common causes consecutive series familial als pedigrees japan reveal possible genetic causes remaining patients familial als pedigrees performed targeted next generation sequencing known als motor neuron diseases related genes known variants ang optn setx tardbp identified patients novel likely pathogenic homozygous variant als identified patient addition patients harbored novelvariants uncertainsignificance whereas hexanucleotide repeat expansions incorf detected using repeat primed polymerase chain reaction collectively japanese cohort frequencies sod fus setx tardbp ang optnvariantswere respectively findings indicate considerable differences genetic variations associatedwith familial als across populations genetic analyses functional studies novel variants warranted elsevier inc rights reserved
extract ulvan obtained green alga ulva clathrata lyophilized confirmed fourier transform infrared spectrometry ftir nuclear magnetic resonance nmr percentage sulfate groups calculated elemental quantitative analysis lyophilized ulvan twice dry algae dietary effect ulvan hematology immunology growth evaluated tilapia oreochromis niloticus fish fed commercial diet negative control group diet supplemented three levels ulvan feed additionally positive control yeast saccharomyces cerevisiae feed included trial period days days treatment days suspended treatment hematocrit hemoglobin red blood cell rbc count white blood cell wbc count total serum protein albumin globulin phagocytic activity measured days treatment day increased fish diets containing ulvan increase wbc count observed day fish diets containing ulvan maintained days ulvan dietary suspension significant difference growth performance among fish diets tested first report increment immune response dietary supplementation ulvan clathrata nile tilapia results demonstrate potential activity ulvan least two mechanisms immune response tilapia time activity sustained organism suspension supplementation
individual male years ingested two separate doses butyl phthalate dnbp diisobutyl phthalate dibp rate similar key monoester oxidized metabolites identified quantified urine continuously collected post dose dnbp dibp majority dose excreted first dnbp dibp dose excreted urine day case simple monoesters major metabolites mnbp mibp dnbp similar excreted various side chain oxidized metabolites dibp approximately excreted mainly oxidized side chain metabolite mibp indicating extent oxidative modification around times higher dibp dnbp dnbp dibp metabolites reached peak concentrations post exposure followed monotonic decline dnbp metabolites elimination halftime mnbp longer elimination halftimes estimated oxidized metabolites dibp metabolites mibp shortest halftime oxidized metabolites somewhat longer halftimes together simple monoesters secondary oxidized metabolites additional valuable biomarkers phthalate exposure study provides basic human metabolism toxicokinetic data two phthalates considered human reproductive toxicants shown omnipresent humans
optimized vipa gene designated vipa chemically synthesized thi gene chloroplast transit peptide coding sequence attached end produce tvipa vipa tvipa genes transformed gossypium hirsutum zhongmiansuo independent transformants positive vipa tvipa gene four independent transgenic lines single copy insertions unchanged phenotypes ctv ctv tvipa vipa selected southern blotting subjected insect bioassay field assessment four homozygous transgenic lines selected amount expressed vipa protein determined western blotting elisa protein concentrations ctv ctv three fold higher expected vipa protein ctv ctv transported chloroplasts accumulated vipa protein concentration chloroplasts ctv ctv fold four transgenic lines showed mortality fall army worm spodoptera frugiperda beet armyworm spodoptera exigua insect bioassay moreover ctv ctv exhibited mortality cotton bollworm cbw helicoverpa zea whereas showed mortality cbw respectively field bioassay indicated ctv ctv resistant cbw results suggest two tvipa transgenic lines ctv ctv used develop insect resistant cultivars could used resource raising multi toxins expressing transgenic cotton
analyzing basic mechanism dna double strand breaks dsb formation meiosis important understanding sexual reproduction genetic diversity location amount meiotic dsbs examined using common molecular biological technique called southern blotting subset total dsbs observed dsb fragments still carrying region recognized southern blot probe detected assumption dsb formation follows nonhomogeneous poisson process propose two estimators total number dsbs chromosome estimator based nelson aalen estimator estimator based record value process compared asymptotic accuracy
angioimmunoblastic cell lymphoma aitl originates follicular helper cells characterised polymorphic infiltrate neoplastic cells forming small clusters around follicle high endothelial venules despite recent advances phenotypic characterisation genetics molecular mechanisms underlying aitl fully understood present study performed whole exome sequencing cases aitl taiwan confirmed frequent mutations tet dnmta idh rhoa plcg recently reported others importantly identified mutations tnfrsf ccnd samsn yet seen strongly implicated pathogenesis aitl among pathogenic mutations identified aitl mutations dna methylation regulators tet dnmta occur early hematopoietic stem cells shown previous studies genetic events enhance self renewal hematopoietic stem cells unlikely major impact cell differentiation mutations rhoa plcg tnfrsf encode proteins critical cell biology likely promote cell differentiation malignant transformation consequently generating malignant phenotype findings extend molecular insights multistage development aitl
aniline important source material chemical industry rubber pesticides pharmaceuticals general population known ubiquitously exposed aniline thus assessment aniline exposure occupational environmental relevance knowledge human metabolism aniline scarce orally dosed four healthy male volunteers two fast two slow acetylators isotope labeled aniline consecutively collected urine samples period days investigated renal excretion aniline metabolites enzymatic hydrolysis glucuronide sulfate conjugates acetyl aminophenol predominant urinary aniline metabolite representing oral dose followed mercapturic acid conjugate acetyl aminophenol accounting acetanilide free aniline found minor amounts accounting dose overall four biomarkers excreted urine post dose represented oral aniline dose elimination half times acetyl aminophenol mercapturic acid conjugate acetanilide free aniline respectively urinary maximum concentrations acetyl aminophenol reached maximum concentrations mercapturic acid conjugate whereas concentrations acetanilide free aniline peaked present study one first provide reliable urinary excretion factors aniline metabolites humans oral dosage including data predominant urinary metabolite acetyl aminophenol also known analgesic name paracetamol acetaminophen
endonuclease cleaves phosphodiester bond apurinic apyrimidinic sites one major enzymes involved base excision repair far properties several archaeal endonuclease homologues characterized vitro little known functions vivo herein report biochemical genetic analysis two endonucleases sisexoiii sisendoiv hyperthermophilic crenarchaeon sulfolobus islandicus reya sisexoiii sisendoiv exhibit endonuclease activity neither exonuclease activity sisexoiii sisendoiv similar values substrate containing site latter cleaves substrate dramatically higher catalytic rate former unlike endonucleases identified archaea sisexoiii sisendoiv exhibit cleavage activity dna oxidative damage oxo uracil genetic analysis revealed neither gene essential cell viability growth dagger sire endoiv dagger sire exoiii dagger sire dagger sire affected normal growth conditions however dagger sire exhibits higher sensitivity alkylating agent methyl methanesulfonate mms dagger sire expression sire partially complement sensitivity dagger sire mms suggesting backup role sisexoiii site processing vivo intriguingly expression sisendoiv renders strain sensitive mms control taken together conclude sisendoiv sisexoiii main endonuclease participates directly base excision repair islandicus
apoptosis required maintain tissue homeostasis multicellular organisms platelets anucleate cells essential blood clotting prime example brief life span circulation regulated intrinsic apoptosis pathway pro survival bcl also termed bcll essential platelet viability functions restrain proapoptotic bcl family members bak also termed bak bax essential mediators intrinsic apoptosis genetic deletion pharmacological inhibition bcl results thrombocytopenia conversely deletion bak platelets doubles circulating life span however triggers platelet apoptosis vivo remains unclear pro apoptotic proteins essential initiating apoptosis nucleated cells evidence suggest also play role platelet biology investigated whether puma also termed bbc potent protein inhibit pro survival bcl family members well directly activate bax regulates death platelets surprisingly loss puma impact loss platelets caused loss bcl therefore remains established whether proteins play critical role induction apoptosis platelets whether death controlled solely interactions bcl bak bax
approximately sudden cardiac deaths unexplained sudden arrhythmic death syndrome sads survivors cardiac arrest identifiable cardiac abnormality comprehensive clinical evaluation idiopathic ventricular fibrillation ivf genetic testing may able play role diagnostics targeted underlying phenotype present family members following clinical evaluation alternatively post mortem genetic testing molecular autopsy may diagnose underlying cause clearly pathogenic rare variant found limitations include modest yield high probability finding variant unknown significance vus leading low signal noise ratio next generation sequencing enables cost efficient high throughput screening larger number genes expense increased genetic noise yield genetic testing even lower ivf absence suggestion another phenotype index case family actively discouraged time future improvements diagnostic utility include optimization use variant calling pipelines shared databases well patient specific models disease accurately assign pathogenicity variants studying trios parents index case may better assess yield sporadic recessive disease elsevier inc rights reserved
arbuscular mycorrhiza formed plant roots fungi one widespread symbiotic associations nature understand molecular mechanisms formation profiled symbiosis related genes expressed amorpha fruticosa roots colonized glomus mosseae non mycorrhizal roots different stages using differential display pcr ddrt pcr expressed genes confirmed reverse northern blotting eleven fragments sequenced putatively identified homologous alignment eleven related genes five obtained early stage plant fungus interaction six later stage three expressed sequence tag ests sequences found originate fungi eight host plant use pcr evaluation gdna plant fungi target genes included atp binding cassette sub family transporter gene transposon insertion display band photosynthesis related gene results provided information molecular mechanisms underlying development mycorrhizal symbiosis woody plants fungi
arginase one three key enzymes nitrogen catabolism physiological role arg catabolism cereal crops fully clarified studies shown arginase encoding genes play key role providing nitrogen developing seedlings many plant species yield primary trait many crop breeding programs increased modification genes related photosynthesis nitrogen assimilation carbon distribution plant architecture transcriptional networks controlling plant development present study maize arginase gene zmarg cloned introduced maize inbred lines agrobacterium tumefaciens mediated transformation putative transgenic plants confirmed pcr southern blotting pcr analysis expression zmarg gene increased arginase activity several tissues transgenic lines transgenic maize plants significantly higher ear weight seed weight compared wild type control results suggested zmarg potential target gene crop yield improvement
artemisinin potent antimalarial drug major constituent artemisia effective quinine resistant strains plasmodium aim present study enhance artemisinin production roots artemisia dubia transformation rol genes using agrobacterium tumefaciens agrobacterium rhizogenes agrobacterium tumefaciens strain lba containing prt agrobacterium rhizogenes strain lba harboring rol abc genes used transformation experiments pcr southern hybridization confirmed dna integration events artemisia dubia roots transformed roots proliferated two fold compared untransformed roots days roots proliferation hplc analysis showed higher concentration artemisinin roots artemisia dubia transformed rhizogenes strain compared roots transformed tumefaciens artemisinin observed control roots
arterial tortuosity syndrome rare autosomal recessive connective tissue disease characterized elongation tortuosity aneurysmal formation large middle sized arteries sometimes associated stenosis pulmonary arteries aorta present three cases severe arterial tortuosity different manifestations two cases aortic arch involved angiography showed tortuous aortic arch many loops twists normal descending aorta one required operation third case presented multiple severe stenoses pulmonary arteries many tortuous segments surgical repair consisted pulmonary artery augmentation utilizing bovine pericardial patch hilum hilum
biosensing devices shrink smaller smaller approach scale single molecule electronic sensing becomes possible review operation single enzyme transistors made using single walled carbon nanotubes novel hybrid devices transduce motions catalytic activity single protein electronic signal real time monitoring protein activity analysis electronic signals reveals new insights enzyme function proves electronic technique complementary single molecule methods based fluorescence one example nanocircuit technique studied klenow fragment dna polymerase catalytically processes single stranded dna templates fidelity dna polymerases makes key component many dna sequencing techniques demonstrate nanocircuits readily resolve dna polymerization single base sensitivity consequently template lengths directly counted electronic recordings base base activity measuring copies template length determined base pair resolution different template lengths identified enumerated solutions containing template mixtures
maize domesticated mexico around years ago local farmers selected maintained seed stocks particular traits adapted local conditions present day many landraces still cultivated however increased urbanization migration rural areas implies risk invaluable maize germplasm may lost order implement efficient mechanism conservation situ diversity landrace populations must estimated development method select minimum number samples would include maximum number alleles identify germplasm harboring rare combinations particular alleles also safeguard efficient situ conservation germplasm reach goal strategy based ssr analysis novel algorithm define minimum collection rare genotypes using landrace populations puebla state mexico developed proof concept methodology could extended maize landrace populations mexico eventually native crops ssr based strategy using bulked dna samples allows rapid processing large numbers samples set laboratories equipped basic molecular biology therefore continuous monitoring landrace populations locally could easily carried methodology applied support incentives small farmers situ conservation traditional cultivars
prevalence socioeconomic burden allergic rhinitis steadily increasing every year essential clinical practitioners diagnose manage allergic rhinitis evidence based manner therefore korean academy asthma allergy clinical immunology developed new clinical guidelines korean patients practitioners first performed questionnaire survey address core questions clinical practitioners curious large group physicians allergists pediatricians otorhinolaryngologists developed answers questions performing systematic literature review determining appropriate levels recommendation article propose answers core questions regarding diagnosis differential diagnosis allergic rhinitis
ascorbate peroxidase apx one key enzymes plant antioxidant system playing along catalase central role hydrogen peroxide scavenging approach increase knowledge cytosolic apx gene organization achieved isolating characterisating new cdnas thus providing new insights physiological roles regulation enzymes partial cdna clone corresponding untranslated region cytosolic ascorbate peroxidase related isolated potato sprouts pcr database analysis retrieved several expressed sequence tags ests coding potato cytosolic ascorbate peroxidase used infer complete cdna sequence deduced amino acid sequence revealed high homologies plant cytosolic ascorbate peroxidases confirming reliability virtual cdna northern blot analysis revealed existence single band related isolated cdna southern blotting results allowed elaboration possible gene organization
ascorbic acid dopamine uric acid tryptophan trp considered crucial small biomolecules physiological processes human metabolism abnormal levels species lead occurrence diseases disorders paper polyethyleneimine pei covalent functionalized graphene pei used modify glassy carbon electrode applied simultaneous sensitive determination four molecules pei nanocomposite characterized fourier transform infrared spectroscopy ftir ultraviolet visible vis ray powder diffraction xrd transmission electron microscopy tem electrochemical behaviors trp pei modified electrode studied detail optimal experimental conditions simultaneous determination trp explored results showed oxidation peaks four species could well separated peak peak separations trp respectively linear response ranges simultaneous detection trp mol mol mol mol detection limits mol mol mol mol respectively proposed method provides promising strategy simultaneous detection species practical application
assembly eukaryotic ribosomes elaborate biosynthetic process begins nucleolus requires hundreds cellular factors analysis rrna processing instrumental studying mechanisms ribosome biogenesis effects stress conditions molecular milieu nucleolus describe quantitative analysis steady state levels rrna precursors applicable studies mammalian cells organisms include protocols gel electrophoresis northern blotting rrna precursors using procedures optimized large size rnas also describe ratio analysis multiple precursors technique facilitates accurate assessment changes effi ciency individual pre rrna processing steps
atopic dermatitis eczema common chronic inflammatory skin disease multifactorial disease local systemic immune changes current therapies focus restoring local skin barrier inhibiting immune responses issue european journal immunology sehra eur immunol describe mouse model cell specific expression constitutively active stat flaky tail mice mutations flg tmem genes authors describe combination changes skin barrier proteins filaggrin tmem together cytokine signaling constitutively active stat transgene drives immune pathomechanism results consistent human studies demonstrated diminished filaggrin expression skin predisposing factor neither required sufficient disease indicating additional factors required disease development current mouse model sehra could instrumental evaluation new therapeutic strategies
alloy tested biodegradable material form endomedullary implants female wistar rat femurs order evaluate accumulation potentially toxic elements biodegradation implant magnesium aluminium zinc manganese fluorine levels measured different organs kidneys liver lungs spleen brain several factors may influence accumulation taken account long implant place whether bone fractured presence mgf protective coating implant main conclusions clinical relevance study endomedullary implants degradation rate months fully compatible fracture consolidation neither bone fracture mgf coating seems influence accumulation trace elements studied organs aluminium alloying element study requires special attention increase recovered sampled organs represents amount contained implant accumulates statistically significant way organs except brain suggests long term tests may suitable material osteosynthesis
babesiosis protozoal disease caused babesia spp mammals humans worldwide one important tick borne diseases affects livestock productions reproductions accordingly failing economy systematic review meta analysis study prevalence babesiosis among domestic herbivores iran methodically reviewed nine databases including five english four persian databases explored total articles regards examination sheep goats cattle horses corresponding prevalence babesiosis different regions iran gathered qualifying criteria overall prevalence babesiosis expected domestic herbivores results showed highest prevalence khorasan razavi west azarbaijan lowest mazandaran isfahan provinces respectively high prevalence babesia infection herbivores mostly sheep goats confirms established enzootic situation babesiosis iran particularly western northeastern regions country data offered important updated information epidemiology babesiosis first time domestic herbivores iran likely contributing expansion screening control strategies reduce health economic impacts among farm animals
bacillus thuringiensis insecticidal crystal proteins bind cell surface receptors represent family aminopeptidases apn aminopeptidase present brush border membrane insect midgut cells susceptible insects leading pore formation death insect report first time presence novel apn fat body moth achaea janata northern blotting detected least one apn specific transcript fat body whereas two transcripts different sizes detected midgut cloned two full length apn cdnas fat body midgut respectively encode proteins amino acids two apns share amino acid sequence identity display typical apn features terminal signal peptide several putative glycosylation sites terminal glycosylphosphatidylinositol anchor signal apn specific zinc binding gluzincin motif hexxhxe gluzincin motif gamenwg fat body apn manifested variation expression respect tissue developmental stage spite abundance apn transcript fat body fairly low apn activity detected tissue fat body midgut specific apns showed differential interaction various crya toxins besides level toxicity different cry subtypes varied enormously mode site delivery intrahaemocoelic injections feeding bioassays data indicate fat body might potential alternative cry toxin target site moth
background aims choline kinase chka catalyzes conversion choline phosphocholine contribute carcinogenesis little known role chka pathogenesis hepatocellular carcinoma hcc methods performed whole exome transcriptome sequence analyses paired hcc non tumor adjacent tissues performed tissue chip analyses primary hcc non tumor adjacent tissues patients received surgery shanghai china january december sets specimens hcc non tumor adjacent tissues also analyzed chka gene copy number quantified findings validated quantitative reverse transcription polymerase chain reaction analysis chka messenger rna protein levels determined polymerase chain reaction immunohistochemical immunoblot analyses chka examined hepatocyte cell lines hcc derived cell lines knocked small interfering rnas hcc cell lines cells analyzed proliferation wound healing migration invasion assays cells injected tail veins mice tumor growth metastasis quantified immunoprecipitation immunofluorescence assays conducted determine interactions chka epidermal growth factor receptor egfr mechanistic target rapamycin complex results levels chka messenger rna frequently increased hcc tissues compared nontumor tissues increased expression associated amplification chka loci tumors expressed high levels chka aggressive phenotypes patients tumors shorter survival times surgery compared patients whose tumors expressed low levels chka hcc cell lines stably overexpressed chka higher levels migration invasion control hcc cells formed larger xenograft tumors metastases mice compared hcc cells overexpress chka chka required physical interaction egfr mechanistic target rapamycin complex complex required hcc cells form metastatic xenograft tumors mice become resistant egfr inhibitors conclusions found levels chka increased human hccs compared nontumor tissues increased expression associated tumor aggressiveness reduced survival times patients overexpression chka hcc cell lines increased invasiveness resistance egfr inhibitors ability form metastatic tumors mice promoting interaction egfr mechanistic target rapamycin complex
background age related maculopathy arm degeneration armd leading cause irreversible blindness developed countries despite several studies morphology armd aetiology unknown factor contributing pathogenesis remain characterised recent studies demonstrated cholesterol esters lipids present within bruch membrane deposits drusen dietary fat intake associated armd product gene leptin recently discovered peptide participating human metabolism direct relationship serum leptin diet lipoprotein metabolism role leptin course armd previously investigated purpose cross sectional case control study investigated whether serum leptin level associated armd new possible risk factor assess relationship disease severity methods total patients arm armd men women age sex matched healthy control subjects without armd men nine women similar ethnic background enrolled multicentre study body mass index bmi weight height calculated group presence maculopathy assessed basis colour fundus photographs using international classification system patients classified early arm late armd using clinical examination grading photographs serum leptin levels measured enzyme linked immunosorbent assay kit mann whitney test chi test used statistics indicated considered significant results age sex ratio bmi groups comparable patients maculopathy significantly lower leptin levels mean control subjects addition late armd patients significantly lower leptin levels early arm patients control subjects conclusion leptin seems possible newly associated factor course arm may involved lipid composition macular lesions especially late armd
background aim tumor suppressing role ras association domain family rassfa described several systems study tested tumor suppressing ability potential molecular mechanisms hepatocellular carcinoma hcc qidong county methods reverse transcription polymerase chain reaction northern blotting employed detect expression rassfa hcc establishing stable rassfa wild type mutant expressing dong gan yan jiu suo qidong institute liver cancer qgy cell lines tested effects rassfa expression cell growth cell proliferation rate cell colony formation cell cycle progression also tested effects rassfa expression tumorigenesis nude mice cellular sensitivity mitomycin treatment results rassfa transcript found three four hcc cell lines hcc primary biopsies stepwise regression analyses indicated loss rassfa expression frequent patients hepatitis virus surface antigen positive hbsag compared hbsag tumor corresponding non cancerous tissues wild type rassfa expression qgy cell line resulted fewer smaller clones decreased xenograft tumor volume weight arrest vitro vivo rassfa expression also decreased cyclin protein expression appeared level post transcriptional control addition rassfa expression increased cell growth inhibition percentage cells sub dna content cells treated mitomycin conclusion rassfa tumor suppressor hcc loss rassfa expression may related hbsag hepatocarcinogenesis inactivation may play important role development hcc
background aims chromosomal evolution including numerical structural changes major force plant diversification speciation study addresses genomic changes associated extensive chromosomal variation mediterranean prospero autumnale complex hyacinthaceae includes four diploid cytotypes unique combination chromosome number rdna loci genome size methods new satellite repeat pab previously identified monomers reconstructed next generation sequencing ngs data autumnale cytotype monomers prospero cytotypes species sequenced check lineage specific mutations copy number restriction patterns methylation levels pab analysed using southern blotting pab localized chromosomes using fluorescence situ hybridization fish key results monomer pab long contains several intact truncated vertebrate type telomeric repeats highly methylated pab exceptional high copy number unprecedented variation among diploid cytotypes ranging copies per pab always located pericentromeric regions several chromosomes additionally two lineages cytotype possessing either single duplicated rdna locus differ pab copy number ancestral condition single locus associated higher pab copy numbers conclusions although present prospero species pab undergone differential amplification chromosomally variable autumnale particularly cytotypes arose via independent chromosomal fusions respectively accompanied genome size increases copy numbers satellite dna pab among highest angiosperms changes pab exceptionally dynamic group closely related cytotypes single species evolution pab copy numbers discussed suggested pab represents recent highly dynamic system originating small pool ancestral repeats
background aims little known intestinal epithelial expression secretion cxcl chemokine involved recruiting cells monocytes aimed study cxcl gene expression regulation pro inflammatory cytokines interleukin beta interferon ifn gamma tumour necrosis factor tnf alpha intestinal epithelial cell lines materials methods cxcl expression secretion kinetics assessed caco dld human colon epithelial cells treated beta tnf alpha ifn gamma alone combination real time polymerase chain reaction pcr northern blotting enzyme linked immunoabsorbent assay elisa transient transfections tgl cxcl promoter tgl kappa mutant promoter gelshifts supershifts nuclear factor kappa also performed results real time pcrs elisa experiments revealed beta strongest earliest inducer cxcl messenger ribonucleic acid mrna expression protein secretion caco cell line whereas inf gamma delayed kinetics strong synergistic effect either tnf alpha beta ifn gamma cxcl mrna expression protein secretion three cell lines real time pcr elisa experiments using specific kappa inhibitor transfection experiments kappa binding defective cxcl promoter construct revealed induction cxcl beta synergism ifn gamma kappa dependent conclusion data demonstrate colonic epithelial cells depending cellular context utilizing kappa pathway beta alone synergism ifn gamma may play major role induction cxcl
background purpose increasing interest extracellular rnas rnas numerous reports associations selected micrornas mirnas variety cardiovascular disease phenotypes previous studies rnas relation risk cardiovascular disease investigated small numbers patients assayed candidate mirnas human studies investigated links novel rnas stroke methods conducted unbiased next generation sequencing using plasma participants fhs framingham heart study offspring cohort exam followed high throughput polymerase chain reaction rnas reverse transcription quantitative polymerase chain reaction included abundant mirnas small nucleolar rnas piwi interacting rnas additional fhs participants explored relations rnas prevalent incident stroke coronary heart disease prevalent incident results adjustment multiple cardiovascular disease risk factors rnas associated stroke prevalence incidence rna associated prevalent incident coronary heart disease statistically significant rna associations stroke specific overlap prevalent incident events conclusions largest study rnas relation stroke using unbiased approach observational cohort first large study examine human small noncoding rnas beyond mirnas results demonstrate studied large observational cohort extracellular mirnas associated stroke risk
background collective cell migration whereby cell cell contacts cadherin maintained migration recently emerged detailed mechanisms still unclear study role rab functions recycling endosomes relationship cadherin colorectal carcinoma identified role rab collective cell migration colon cancer cells clarified materials methods total patients surgically resected colorectal carcinoma enrolled immunohistochemical study relationships overexpression rab cadherin survival evaluated cell biology rab overexpression knock colon cells studied results expression rab cadherin correlated stage cancer lymph node metastasis however overall survival poor group patients duo positive rab adherin expression compared group patients without dual positive expression rab demonstrated physical interaction cadherin overexpression rab found promote collective cell migration increased distribution cadherin enhanced cell cell connections addition rac activation matrix metalloproteinase expressions upregulated upon rab expression conclusions study demonstrated rab cadherin expressions indicators poor survival time colorectal carcinoma rab overexpression may contribute increased collective cell invasion colorectal carcinoma
background context degenerative disc disease ddd remains without effective therapy presents costly burden society purpose based upon prior reports concerning effects notochordal cell conditioned medium nccm disc cells performed proof principle study determine whether nccm could reduce cytotoxic stress induced apoptosis human disc nucleus pulposus cells study design setting vitro fundamental basic science study methods nucleus pulpous cells derived patients undergoing spinal surgery treated interleukin beta fas ligand etoposide presence nccm determined proor antiapoptotic events using activated caspase assays determined genomic regulation apoptosis using polymerase chain reaction arrays validated usingwestern blotting methods interrogated cellular apoptotic regulation using dye flow cytometry performed enzyme linked immunosorbent assays evaluate inflammatory cytokine secretion results notochordal cell conditioned medium inhibits cytotoxic stress induced caspase activities maintains mitochondrial membrane potential human npcells thereby suppressing intrinsic apoptotic pathway gene expression analysis revealed linked inhibitor apoptosis protein key player responsible evading etoposide induced apoptosis presence ofnccm verified data using western blotting enzyme linked immunosorbent assay results revealed distinct differences secretions cells response etoposide presence nccm conclusions demonstrate first time nccm reduces cytotoxic stressinduced apoptosis human cells soluble factors present nccm could harnessed development novel therapeutics treatment ddd elsevier inc rights reserved
background people cystic fibrosis need pancreatic enzyme replacement therapy prevent malnutrition enzyme preparations need taken whenever food taken dose needs adjusted according food consumed systematic review efficacy safety pancreatic enzyme replacement therapy needed guide clinical practice variability centres respect assessment pancreatic function time commencing treatment dose choice supplements updated version published review objectives evaluate efficacy safety pancreatic enzyme replacement therapy children adults cystic fibrosis compare efficacy safety different formulations therapy appropriateness different age groups also compare effects pancreatic enzyme replacement therapy cystic fibrosis according different diagnostic subgroups different ages introduction therapy different categories pancreatic function search methods searched cochrane cystic fibrosis genetic disorders group trials register comprising references identified comprehensive electronic database searches handsearches relevant journals abstract books conference proceedings recent search july also searched ongoing trials website websites pharmaceutical companies manufacture pancreatic enzyme replacements additional trials recent search july selection criteria randomised quasi randomised controlled trials people age cystic fibrosis receiving pancreatic enzyme replacement therapy dosage formulation period less four weeks compared placebo pancreatic enzyme replacement therapy preparations data collection analysis two authors independently assessed trials extracted outcome data also assessed risk bias trials included review main results one parallel trial cross trials children adults cystic fibrosis included review number participants trial varied total participants included review included trials duration four weeks included trials mostly unclear risk bias randomisation process details given also mostly high risk attrition bias reporting bias could combine data trials compared different formulations findings individual studies provided insufficient evidence determine size precision effects different formulations ten studies reported information review primary outcome nutritional status however able combine data two small cross studies estimated gain body weight imprecise confidence interval combined data studies gave statistically significant results favouring enteric coated microspheres enteric coated tablets secondary outcomes stool frequency mean difference confidence interval proportion days abdominal pain mean difference confidence interval fecal fat excretion mean difference confidence interval data another single small cross study also favoured enteric coated microspheres non enteric coated tablets adjuvant cimetidine terms stool frequency mean difference confidence interval authors conclusions limited evidence benefit enteric coated microspheres compared non enteric coated pancreatic enzyme preparations one month comparison could combine data fact cross studies likely underestimate level inconsistency results studies due inflation confidence intervals individual studies evidence long term effectiveness risks associated pancreatic enzyme replacement therapy also evidence relative dosages enzymes needed people different levels severity pancreatic insufficiency optimum time start treatment variations based differences meals meal sizes need properly designed study answer questions
background myotonic dystrophy type autosomal dominant multisystem disease caused abnormal expansion cytosine thynnine guanine ctg repeats myotonic dystrophy protein kinase gene clinical manifestations multisystemic highly variable unstable nature ctg expansion causes wide genotypic phenotypic presentations make molecular methods essential diagnosis far studies molecular diagnosis chinese patients reported therefore carried study using two different methods molecular diagnosis verify validity detecting ctg expansion chinese patients showing signs methods total chinese individuals referred molecular diagnosis using conventional polymerase chain reaction pcr accompanied southern blotting triplet primed pcr pcr evaluated sensitivity limitation method using percentage results conventional pcr samples showed one fragment corresponding normal allele correctly diagnosed pcr three homologous non samples ruled southern blotting analysis successfully made correct diagnoses sensitivity using alpha labeled probes dig labeled probes conclusion molecular analysis necessary diagnosis pcr reliable sensitive easily performed method molecular diagnosis worthy popularized
background incidence type diabetes mellitus tdm sardinia among highest world cases person years recommendations immunology diabetes society advise evaluating autoantibody positivity first degree relatives fdrs patients tdm higher risk develop disease aim study determine prevalence beta cell autoimmunity fdrs tdm patients sardinia methods total sardinian families recruited collaboration diabetes pediatric units university district hospitals sardinia recruitment involved patients diagnosed tdm available fdrs autoantibodies aabs gad insulin znt measured subjects human leukocyte antigen hla risk genotypes hla loci analyzed aabs positive fdr results prevalence aabs type autoantibody single multiple fdr autoantibodies positive autoantibody autoantibodies autoantibodies autoantibodies typing hla loci showed fdr carried moderate high risk genotypes fdr low risk genotypes conclusions prevalence tdm autoantibodies fdrs tdm patients high sardinian population higher populations united states europe similar observed finland autoantibody positivity strongly associated hla risk study provides evidence high risk tdm fdr tdm patients sardinia warrants longitudinal follow estimate risk progression tdm high risk populations
background limited understanding maternal diet affects breastmilk food allergen concentrations whether exposure allergens route influences development infant oral tolerance sensitization objective investigate maternal dietary egg ingestion early lactation influences egg protein ovalbumin levels detected human breastmilk methods randomized controlled trial women allocated dietary group first six weeks lactation high egg diet eggs per week low egg diet one three eggs per week egg free diet breastmilk samples collected weeks lactation measurement ovalbumin permeability mammary epithelium assessed measuring breastmilk sodium potassium ratio egg specific ige igg measured infant plasma weeks prior introduction egg solids weeks results average maternal egg ingestion associated breastmilk ovalbumin concentration specifically additional egg ingested per week average increase ovalbumin concentration breastmilk ovalbumin concentrations significantly higher high egg group eggs per week compared egg free group however one third women breastmilk ovalbumin detected detectable associations found mammary epithelium permeability breastmilk ovalbumin concentrations infant plasma egg specific igg levels also positively associated maternal egg ingestion average increase infant egg specific igg levels per additional egg consumed per week conclusions clinical relevance increased maternal egg ingestion associated increased breastmilk ovalbumin markers immune tolerance infants results highlight potential maternal diet benefit infant oral tolerance development lactation
background lysophosphatidic acid lpa lipid mediator multiple biological activities may affect progression various cancers malignant ascites contains high levels lpa well vascular endothelial growth factor vegf although lpa receptors widely expressed normal well cancer cells little known effect lpa host cells therefore evaluated effect lpa specifically peritoneal mesothelial cells pmc assessed another aspect lpa tumor biology mediated host cells materials methods effect lpa production vegf evaluated elisa northern blotting next quantified human mouse vegf separately ascitic fluid nude mice inoculated intraperitoneally human gastric cancer mkn thus evaluated ratio host derived vegf malignant ascites results addition lpa enhanced vegf production pmc gene activation effect strongly inhibited pre treatment ptx indicating effect mainly dependent lpa signal vegf ascitic fluid weeks tumor inoculation derived mouse cells weeks however ratio host derived vegf reduced suggesting ratio host derived vegf may higher earlier phase conclusion tumor growth often associated increase lpa concentration ascites stimulation vegf production pmc might important role growth cancer cells disseminated peritoneal cavity elsevier inc rights reserved
background nasal colonization gained attention effect modifier staphylococcus aureus vaccine trials suggesting interference carriage cell immunity likewise cell signals may involved regulating effectors epithelial innate defense methods whole blood persistent carriers noncarriers stimulated viable aureus helper type cytokine expression measured compared carrier groups linked data human beta defensin hbd messenger rna mrna skin adjusting transcriptionally relevant promoter haplotypes results compared carriers stimulated whole blood noncarriers contained average interferon gamma mrna less interleukin mrna resulting average higher ifn gamma mrna ratio multivariable model per duplication mrna template risk carrier increased odds ratio confidence interval decreased ifn gamma independent carriage defb promotor haplotype unit increase ifn gamma mrna ratio mean led increase hbd transcription experimentally wounded human skin conclusions low mrna ratio increases propensity persistent aureus nasal colonization regulated hbd transcription providing potential link
background prostate specific antigen psa important prostate cancer biomarker also protease expressed high concentrations normal malignant prostate psa secreted zymogen propsa inhibitory prodomain must removed full activity propsa variants assumed inactive found blood prostate cancer patients indicative poor clinical outcome despite abundance clinical reports understanding psa enzymology limited part due lack appropriate experimental systems sought develop series psa derived mutants would help enhance understanding gene methods sixteen rpsa variants generated characterized variety biochemical methods results wildtype cdna provided template generating panel recombinants included variants abolished removal prodomain disabled enzymatic activity facilitated cell based conversion active conformation purified variants proteolytic activity examined using fluorogenic substrate known psa cleavable proteins physiologically relevant inhibitors upon demonstrating successful generation purification psa variants characterized propsa activity describing cleavage synthetic biologic substrates serum protease inhibitors finding exploited development self activating mutant psa exhibited greatest enzymatic activity variants conclusions system described herein prove useful varied applications propsa partially functional relatively high activity compared mature enzyme demonstrating zymogen intrinsic activity suggest propsa prostate cancer patient serum inert may implications understanding disease wiley periodicals inc
background several streptococcus pneumoniae proteins play role pathogenesis investigated vaccine targets largely unknown whether naturally acquired antibodies reduce risk colonization strains expressing particular antigenic variant methods serum immunoglobulin igg titers pneumococcal protein antigens measured among individuals aged days serum collection antigen variant pneumococcal isolate determined using genomic data assessed association preexisting variant specific antibody titers subsequent carriage pneumococcus expressing particular antigen variant results antibody titers often increased across pediatric groups decreasing among adults individuals low titers group pneumococcal surface protein pspc variants likely colonized pneumococci expressing variants antigens variant specific igg titers predict colonization conclusion observed inverse association variant specific antibody concentration homologous pneumococcal colonization protein assessment antibody repertoires may elucidate nature antipneumococcal antibody mediated mucosal immunity informing vaccine development
background discovery novel biomarkers predict treatment response advanced cancer patients requires acquisition high quality tumor samples cancer evolves time tissue ideally obtained start treatment preferably samples freshly frozen allow analysis next generation dna rna sequencing ngs also making emerging systematic techniques proteomics metabolomics possible describe first image guided biopsies collected large collaboration netherlands center personalized cancer treatment show utility specimens ngs analysis patients methods image guided tumor biopsies performed advanced cancer patients samples fresh frozen vital tumor cellularity estimated dna isolated macrodissection tumor rich areas safety image guided biopsy procedures assessed reporting serious adverse events within days biopsy procedure results biopsy procedures generally well tolerated major complications occurred frequently consisting pain percutaneous lung biopsies pneumothorax requiring drainage occurred majority samples contained vital tumor percentage least least dna could isolated given preset criteria samples sufficient quality biomarker discovery ngs results cohort line groups conclusion image guided biopsy procedures biomarker discovery enable personalized cancer treatment safe feasible yield highly valuable biobank implications practice study shows safe perform image guided biopsy procedures obtain fresh frozen tumor samples feasible use biopsies biomarker discovery purposes dutch multicenter collaboration majority samples sufficient dna could yielded perform next generation sequencing results indicate way paved consortia prospectively collect fresh frozen tumor tissue
background question whether even chain fatty acids converted glucose long standing tradition biochemistry since glyoxylate shunt absent mammals question considered solved particular relevance understanding metabolic state natives arctic regions due high fat content traditional diet containing negligible amounts carbohydrates methods results using silico approach discovered several hitherto unknown routes human metabolism allow conversion even chain fatty acids carbohydrates humans pathways proceed via ketogenesis intermediate acetone produce gluconeogenic precursor pyruvate pathways make contribution glucose production times limited carbohydrate supply found capacity might limited due high demand reducing equivalents acetone degradation considering traditional diet natives arctic regions detected pathways important order improve carbohydrate supply moreover reduce amount protein needs used gluconeogenesis conclusion summary study sheds new light understanding metabolic state natives arctic regions traditional diet moreover provide avenue new analyses reveal humans adapted metabolically practically carbohydrate free diet
background use plasma liquid biopsy gained increasing attention purpose present study evaluate diagnostic prognostic utility perioperative detection quantitation mrnas encoding human telomerase reverse transcriptase htert glyceraldehyde phosphate dehydrogenase gapdh plasma patients cancer larynx hypopharynx methods recruited patients laryngeal cancer patients hypopharyngeal cancer plus healthy subjects blood sample taken patient surgical resection tumor quantified htert mrna gapdh mrna plasma real time polymerase chain reaction pcr results detection htert mrna surgery diagnostic value sensitivity specificity detection frequent patients supraglottic tumors glottic tumors related subsequent recurrence preoperative levels htert mrna plasma higher patients subsequent recurrence metastases disease free survival dfs overall survival patients plasma samples positive htert mrna poorer patients negative samples mean levels plasma gapdh mrna untreated patients higher healthy subjects conclusion detection quantitation htert gapdh mrna patients plasma might clinically significant cases laryngeal hypopharyngeal cancer wiley periodicals inc
background aim deeper understanding complex molecular pathology brain malignancies needed order develop effective targeted therapies highly lethal disorders effort enlighten molecular pathology brain oncogenesis involving erbb neu ngl ras pathway screened genotypes specimens various types brain tumors materials methods studied specimens included biopsies four general categories neuroglial tumors astrocytomas oligodendrogliomas glioblastomas multiforme meningiomas nervous system tumors schwannomas craniopharyngioma metastatic tumors lung carcinomas chronic myelocytic leukemia screening common mutations oncogenes ras tumor suppressor gene conducted molecular hybridization techniques southern blotting dot blot single strand conformational polymorphism sscp analysis respectively confirmed dna sequencing results gene amplification observed two cases namely one glioblastoma one meningioma screening hot spot codons ras gene subsequent dna sequencing revealed mutations biopsies encompassing categories screening mutations exons gene sscp analysis detected novel nonsense mutation exon unique case glioblastoma biopsy taken patient without neurofibromatosis type conclusion activated ras appears major oncogene brain oncogenesis exhibiting important role ras pathway
background objectives although antioxidative effects lycopene generally known molecular mechanisms underlying anti inflammatory properties lycopene fully elucidated study aimed examine role mechanism lycopene inhibitor inflammation methods materials lipopolysaccharide lps stimulated human colorectal cancer cells treated lycopene mtt assay performed determine effects lycopene cell proliferation western blotting performed observe expression inflammation related proteins including nuclear factor kappa kappa inhibitor kappa kappa mitogen activated protein kinase mapk extracellular signal related kinase erk jun terminal kinase jnk map kinase real time polymerase chain reaction performed investigate mrna expression tumor necrosis factor tnf alpha interleukin beta beta interleukin inducible nitric oxide synthase inos cyclooxygenase cox concentrations nitric oxide prostaglandin pge determined via enzyme linked immunosorbent assays results cells treated lycopene lps mrna expression tnf alpha beta inos cox decreased significantly dose dependent manner concentrations pge decreased according lycopene concentration protein expressions kappa jnk decreased significantly according lycopene concertation conclusions lycopene restrains kappa jnk activation causes inflammation suppresses expression tnf alpha beta cox inos human colorectal cancer cells
background combination technology loop mediated isothermal amplification lamp method electrochemical dna chip developed study cypd gene copies detected technology determination functional cypd cypd alleles methods set lamp primers designed coamplify cypd gene cypd cypdp gene would enable determination cypd gene copies relatively comparing amount amplified products cypd cypdp lamp products reacted electrochemical dna chip using dna detection system genelyzer automatically controls hybridization reaction washing electrochemical detection test feasibility system samples various combinations copy numbers selected pooled samples previously genotyped according empirically well authorized southern blotting based rflp methods results cypd gene copies consistent previous genotypes except rare cypd allele probably due mutation near primer region results completely reproducible blind test given within conclusions method offers simple accurate determination cypd gene copies expected contribute personalized medicine elsevier rights reserved
background aeluropus lagopoides salt drought tolerant grass poaceae family distributed widely arid regions almost information genetics genome close relative wheat stands harsh conditions deserts objectives main aim research isolation characterization salt drought inducible genes lagopoides differential display amplified fragment length polymorphism aflp method material methods research lagopoides grown salt drought conditions modifying aflp method several fragments isolated nomination induction studied reverse northern blotting results aflp led improvement non radioactive method many parameters optimized screened approximately transcript derived fragments percent showed varied expression levels response high salt drought treatments relative abundance twenty one selected differentially expressed fragments inspected reverse northern blotting affirmed potential applied method sequence comparisons revealed isolated genes involved osmotic adjustment regulation transcription cation transportation stress responses data clearly show modified aflp method successful reliable approach isolation differentially expressed genes
background allergic rhinitis common chronic disease among children characterize disease modified classification severity aria recently validated children medical treatment fails surgery nasal obstructive disorders nod may therapeutic option objective assess prevalence nod influence medical treatment response among children persistent per methods prospective real life study paediatric per patients years females severe rhinitis referred allergy ent department assessed response responders non responders medical treatment intranasal steroids antihistamines antileukotrienes direct questioning nasal symptom visual analogue scale presence nod septal deformity turbinate enlargement adenoidal hyperplasia comorbidities nasal symptoms rhinitis severity modified aria criterion asthma control international consensus pediatric asthma criterion results months treatment group presented higher prevalence obstructive septal deformity severe inferior turbinate enlargement compared group higher septal deformity turbinate enlargement scores strongly associated treatment refractoriness prevalence severe per also higher group higher asthma control scores associated probability treatment induced improvement conclusions paediatric per patients medical therapy refractoriness associated nod mainly septal deformity turbinate enlargement patients ent examination facilitate early nod diagnosis order indicate potential corrective surgery
background alloimmunization human platelet antigens hpas occur prenatally induce fetal neonatal alloimmune thrombocytopenia fnait aim study identify placental histological features associated platelet alloimmunization clinical significance methods study examined placentas fnait affected pregnancies age matched control cases collected pathology departments rhone alpes region clinical laboratory findings collected fnait case two pathologists reviewed placental slides fnait control case histological features special emphasis chronic inflammatory lesions evaluated differences two groups calculated odds ratios ors assessed wald chi square results fnait associated significantly higher frequency chronic chorioamnionitis basal chronic villitis bcv chronic intervillositis civ chronic villitis chronic deciduitis also frequent fnait control group differences statistically significant conclusions fnait significantly associated bcv civ chronic inflammatory reaction preferentially localized maternofetal interface anti hpa alloimmunization may trigger immunological conflict similar graft versus host disease elsevier ltd rights reserved
background although fibrosis seems prognostic adverse outcomes adults idiopathic dilated cardiomyopathy idc little known prevalence development fibrosis pediatric idc hearts hypothesized less activation fibrosis molecular level pediatric idc hearts failing adult hearts methods results pediatric hearts analyzed histologically determine prevalence fibrosis left ventricular tissue adult pediatric idc hearts adult pediatric nonfailing hearts subjected quantitative reverse transcription polymerase chain reaction study expression important mrnas affect fibrosis found age specific differences idc hearts regulation noncoding galectin corin matrix metalloproteinase mmp mmp tissue inhibitor metalloproteinase timp timp also found markers similarly altered adult pediatric idc hearts interleukin receptor like receptor timp timp finally micrornas significantly decreased pediatric idc patients conclusions pediatric idc patients demonstrate age specific differences molecular pathways implicated fibrosis adult heart ultrastructural level unique gene expression pattern appears limit fibrosis failing pediatric heart
background impairment cardiovascular function streptozotocin stz diabetic rats mentioned within days months induction atp sensitive potassium atp channels expressed cardiac sarcolemmal membranes highly responsive metabolic fluctuations effects cardiac contractility present study attempted clarify changes cardiac atp channels diabetic disorders methods streptozotocin induced diabetic rats neonatal rat cardiomyocytes treated high concentration glucose glucose concentration used cells cultured used examine effect hyperglycemia cardiac function expression atp channels atp channels expression found linked cardiac tonic dysfunction evaluated expression levels atp channels western blot northern blot analysis results result shows diazoxide produced marked reduction heart rate control group furthermore methods northern blotting western blotting employed identify gene expression atp channel two subunits cardiac atp channel sura kir purchased indicators showed significantly decreased diabetic rats high glucose treated rat cardiac myocytes correction hyperglycemia insulin phlorizin restored gene expression cardiac atp diabetic rats conclusions mrna protein expression cardiac atp channels decreased diabetic rats induced stz weeks phenomenon leads result desensitization atp channel drugs
background anal carcinoma thought driven human papillomavirus hpv infection interrupting function cell regulatory proteins prb john cunningham virus jcv expresses antigen causes malignant transformation development aneuploidy interaction regulatory proteins hpv jcv antigen present brain gastric colon malignancies evaluated anal cancers authors examined cohort anal cancers jcv antigen correlated clinicopathologic data methods archived anal carcinomas analyzed jcv antigen expression dna tumor normal tissue sequenced jcv viral copies determined quantitative polymerase chain reaction southern blotting hpv microsatellite instability msi status correlated jcv antigen expression results cases anal cancer mean age years female human immunodeficiency virus hiv positive individuals cancers expressed jcv antigen including hpv negative specimens jcv copies present cancer versus surrounding normal tissue mean copies dna copies dna correlation disease stage viral copies viral copies hiv positive negative status copies dna respectively subset analysis association found jcv antigen expression hpv msi status conclusions anal carcinomas uniformly express jcv antigen contain viral copies compared surrounding normal tissue jcv antigen oncogenic protein presumably interruption cell regulatory proteins may play role anal cancer pathogenesis cancer american cancer society
background anaphylaxis diagnostic criteria proposed second symposium definition management anaphylaxis criteria sensitive specific retrospectively validated objective prospectively evaluate diagnostic accuracy national institute allergy infectious diseases food allergy anaphylaxis network niaid faan criteria diagnosis anaphylaxis emergency department methods conducted prospective observational study patients seen institution april march patients seeking care allergic reaction possible anaphylaxis enrolled patients providers completed questionnaires regarding onset trigger signs symptoms records reviewed independently blindly board certified allergist immunologists final diagnosis anaphylaxis anaphylaxis used reference standard two two tables built test characteristics calculated results among enrolled patients met niaid faan criteria anaphylaxis allergist immunologists diagnosed cases anaphylaxis also satisfied niaid faan criteria interrater agreement allergist immunologists substantial test characteristics cis niaid faan criteria follows sensitivity specificity positive predictive value negative predictive value positive likelihood ratio negative likelihood ratio conclusions prospectively niaid faan criteria continued highly sensitive lower specificity retrospective assessment criteria likely useful diagnosis anaphylaxis american academy allergy asthma immunology
background asthma characterized heterogeneous inflammatory profile subdivided high low airway inflammation profiling broader panel airway cytokines large unselected patient cohorts lacking methods patients defined cytokine low high sputum mrna expression particular cytokine outside respective percentile range control group unsupervised hierarchical clustering used determine clusters based sputum cytokine profiles results half patients classical high high sputum cytokine profile unsupervised cluster analysis revealed clusters patients high pattern surprisingly cluster equally distributed among clusters patients high profile restricted cluster increased sputum eosinophil well neutrophil counts poor lung function parameters baseline years later four clusters identified high high high high cluster consists patients without cytokine high pattern patients high conclusion identified unique asthma molecular phenotypes biological clustering type cytokines cluster non type cytokines clusters unsupervised analysis thus supports priori type versus non type molecular phenotypes
background autophagy bulk degradation pathway long lived proteins protein aggregates damaged organelles ulk protein kinase vps lipid kinase two key autophagy regulators critical autophagosome biogenesis however fully understood ulk regulates vps especially context disease polyglutamine expansion huntingtin htt causes aberrant accumulation aggregated protein disrupts various cellular pathways including autophagy lysosomal degradation pathway underlying pathogenesis huntington disease although autophagic clearance htt aggregates investigation therapeutic strategy precise mechanism autophagy impairment remains poorly understood moreover vivo assays autophagy particularly challenging due lack reliable robust molecular biomarkers method generated anti phosphorylated atg antibody determine atg mediated autophagy regulation employed huntington disease genetic cell models animal models well autophagy reporter animal model understand autophagy signaling regulation vivo applied biochemical analysis molecular biology approaches dissect alteration autophagy kinase activity regulation results demonstrate ulk phosphorylates atg serine mtor dependent manner phosphorylation critically regulates atg vps lipid kinase activity control autophagy level also show atg associated vps activity ulk mediated phosphorylation atg beclin compromised mouse model huntington disease finally show atg phosphorylation decreased general proteotoxic stress caused proteasomal inhibition reduction specific phosphorylation atg beclin mediated part induced sequestration ulk insoluble cellular fraction show increased ulk levels phosphor mimetic mutant atg facilitate clearance polyq mutant cells conclusion study identifies new regulatory mechanism atg vps kinase activity ulk used valuable molecular markers vivo autophagic activity well potential therapeutic target clearance polyglutamine disease protein
background biodegradation green algal cell wall requires specialized enzymatic machinery yet well characterized results structural biochemical characterization new glucuronyl hydrolase belonging family active oligo ulvans conclusion family encompasses enzymes cleaving linked glycosides significance investigations enzymatic degradation marine polysaccharides reveals enzymes unique characteristics ulvans cell wall matrix polysaccharides green algae belonging genus ulva enzymatic degradation polysaccharide ulvan lyases leads production oligosaccharides unsaturated glucuronyl residue located non reducing end exploration genomic environment around nonlabens ulvanivorans previously percicivirga ulvanivorans ulvan lyase revealed gene highly similar known unsaturated uronyl hydrolases classified cazy glycoside hydrolase family gene cloned protein overexpressed escherichia coli enzymology experiments demonstrated unsaturated glucuronyl activity kinetic analysis purified oligo ulvans incubated new enzyme showed full substrate specificity attained three subsites preferentially bind anionic residues sulfated rhamnose glucuronic iduronic acid three dimensional crystal structure native enzyme reveals trimeric organization required substrate binding recognition binding subsite novel unsaturated glucuronyl hydrolase part previously uncharacterized subgroup members exhibits limited sequence similarity known unsaturated glucuronyl sequences previously found family clan formed families singular fact covered families acting axial equatorial glycosidic linkages respectively overall comparison active site structures enzymes two families highlights within family unlike classical glycoside hydrolysis hydrolysis vinyl ether groups unsaturated saccharides occurs independently configuration cleaved linkage
background bovine respiratory disease brd caused growth single multiple species pathogenic bacteria lung tissue following stress viral infection next generation sequencing ribosomal rna gene pcr amplicons ngs amplicon analysis powerful culture independent open reference method recently used increase understanding brd associated bacteria upper respiratory tract brd cattle however yet used examine microbiome bovine lower respiratory tract objective study use ngs amplicon analysis identify bacteria post mortem lung lymph node tissue samples harvested fatal brd cases clinically healthy animals cranial lobe corresponding mediastinal lymph node post mortem tissue samples collected calves diagnosed brd cases veterinary laboratory pathologists clinically healthy calves ngs amplicon libraries targeting region bacterial rrna gene prepared sequenced illumina miseq quantitative insights microbial ecology qiime used determine operational taxonomic units otus corresponded rrna gene sequences results leptotrichiaceae mycoplasma pasteurellaceae fusobacterium abundant otus identified lungs lymph nodes calves died brd leptotrichiaceae fusobacterium mycoplasma trueperella bacteroides greater relative abundances post mortem lung samples collected fatal cases brd dairy calves compared clinically healthy calves without lung lesions leptotrichiaceae mycoplasma pasteurellaceae showed higher relative abundances post mortem lymph node samples collected fatal cases brd dairy calves compared clinically healthy calves without lung lesions two leptotrichiaceae sequence contigs subsequently assembled bacterial dna enriched shotgun sequences conclusions microbiomes cranial lung lobe mediastinal lymph node calves died brd clinically healthy calves characterised contigs corresponding abundant leptotrichiaceae otu sequenced found identical known bacterial genus suggests identified novel bacterial species associated brd
background breast cancer common type cancer among females genetic polymorphisms might role carcinogenesis aim study determine whether base substitution within taqi vitamin receptor vdr gene exon risk factor among patients breast cancer methods peripheral blood drawn jordanian breast cancer patients healthy jordanian volunteers basheer hospital summer months june november dna amplified using polymerase chain reaction pcr followed taqi restriction enzyme digestion quantification serum hydroxy vitamin level determined competitive immunoassay elecsys results genotypic frequencies taqi genotypes breast cancer compared control respectively vitamin serum level significantly lower breast cancer patients compared control group study showed inverse association serum level breast cancer risk odds ratio confidence interval conclusions inverse association found serum level breast cancer risk statistical difference also found different vdr taqi genotypes circulating levels among jordanian females breast cancer
background broad range rrna pcr used detection identification bacteria clinical specimens patients high suspicion infection cultures negative aims study compare rrna pcr results microbiolog ical culture results assess utility rrna pcr regard antimicrobial therapy compare yield rrna pcr different types clinical specimen perform cost analysis test methods retrospective study performed different clinical specimens performed years standard microbiological cultures performed appropriate media per laboratory protocol patient clinical microbiological data obtained electronic medical records laboratory information system respectively rrna pcr performed reference laboratory using validated method amplification sequencing outcomes assessed performance rrna pcr change antimicrobials rationalization cessation addition duration therapy concordance rrna pcr bacterial cultures also determined tissue specimens results thirty two patients included study equal number specimens sent rrna pcr rrna pcr could identify organism cases seven culture positive three culture negative sensitivity confidence interval specificity positive predictive value negative predictive value antimicrobial therapy rationalized rrna pcr results five patients ceased four based negative results overall rrna pcr result impact antimicrobial therapy patients highest concordance rrna pcr bacterial culture found heart valve tissue followed joint fluid tissue conclusions despite low diagnostic yield results rrna pcr still significant impact patient management due rationalization cessation antimicrobial therapy yield rrna pcr highest heart valves author published elsevier ltd behalf international society infectious diseases
background chordoma malignant tumors axial skeleton arise remnants notochord notochord chorda dorsalis essential embryonic structure involved development nervous system axial skeleton therefore notochord seems biologically relevant control tissue study chordoma molecular biology research nevertheless mainly different tissues notochord used control chordoma due difficulty isolating notochordal tissue describe fast precise method isolating notochordal cells methods examination human fetuses gestation weeks using immuno histochemical methods performed isolate pure notochord cells molecular biology investigation five flash frozen fetuses weeks gestation dissected microtome slicing thereafter pure notochord cells molecular biology investigation harvested using laser capture microdissection lcm rna extracted samples used quantitative pcr results study illustrates notochord embryonic spines three different stages gestation weeks immunohistochemical staining brachyury showed strong staining notochord also weak staining intervertebral disc vertebral body lcm notochord slices subsequent total rna extraction resulted good yield total rna qpcr analysis two housekeeping genes confirmed quality rna conclusion lcm fast precise method isolate notochord quality yield rna extracted tissue sufficient qpcr analysis therefore early embryo notochord isolated lcm suggested gold standard future research chordoma development classification diagnosis elsevier rights reserved
background correct diagnosis cefazolin hypersensitivity straightforward mainly absence vitro tests uncertainties concerning optimal cefazolin concentration skin testing cross reactivity studies suggest cefazolin hypersensitivity selective hypersensitivity objective first objective confirm application higher test concentration could increase skin test sensitivity second part aimed investigating cross reactivity cefazolin beta lactam antibiotics methods total patients referred clinic experiencing perioperative anaphylaxis exposed cefazolin underwent skin testing cefazolin patients exhibiting positive skin test cefazolin panel skin tests beta lactams indicated graded drug challenges study cross reactivity results increasing skin test concentration recommended identified additional patients would otherwise displayed negative skin testing concentration proven nonirritating cefazolin exposed control individuals alternative culprit perioperative anaphylaxis identified graded challenge testing negative skin testing displayed patients tolerated alternative beta lactam antibiotics amoxicillin cephalosporins monobactams carbapenems individuals also tolerated alternative cephalosporin suggesting cefazolin hypersensitivity generally selective allergy conclusions increasing cefazolin concentration skin tests benefits sensitivity diagnosis furthermore data confirm cefazolin hypersensitivity seems selective allergy good tolerance lactam antibiotics american academy allergy asthma immunology
background crambe abyssinica crambe non food oil seed crop seed oil widely used chemical industry high erucic acid content furthermore potential platform various feedstock oils industrial uses based genetic modification describe development series protocols steps required process generating genetically modified crambe results different explant types crambe seedlings tested shoot regeneration using different hormone combinations cotyledonary nodes basic medium naa bap gave highest regeneration percentages propagation tissue culture explants stems petioles leaves axillary buds vitro plantlets tested using optimized medium axillary buds showed highest shoot proliferation efficiency cotyledonary nodes used test proper concentration kanamycin selection transformation events identified effective cotyledonary nodes cotyledons day old seedlings used agrobacterium mediated transformations two kinds selection strategies shifting consistent using shifting selection method kanamycin back cotyledonary nodes gave transformation frequency cotyledons consistent method lower frequencies found cotyledonary nodes cotyledons later vitro plant axillary buds tried explants transformation however transformation frequency low ranging overall testing six different vectors two kinds agrobacterium strains average transformation frequency using shifting method determining dna insertion numbers southern blotting showed approximately transgenic lines single copy insertion conclusions present research revealed potential using crambe meristematic tissue genetic transformation vitro propagation efficient method transformation used cotyledonary node explants days old seedlings shifting kanamycin selection meristematic tissues cotyledonary node axillary bud highest ability shoot proliferation single copy dna insert lines could efficiently reproducibly generated
background differential methylation activity human rdna alzheimer disease patients demonstrated classic cytogenetic tools indicating decrease rrna gene expression methylation cpgs important epigenetic mechanism involved gene expression repression tandem repeating genes ageing thus rdna specific methylation pattern could involved used marker disease progression methods methylation pattern three rdna regions including promoter investigated use restriction endonucleases sensitive methylation southern blotting dna extracted total peripheral blood cells patients elderly young controls results find significant divergence methylation pattern studied regions relative amount rdna methylated copies among individuals groups conclusions differential methylation pattern rdna genes observed total peripheral blood cells aged subjects methodology used alzheimer association rights reserved
background disease surveillance patients bladder cancer important early diagnosis progression metastasis optimised treatment objective develop urine plasma assays disease surveillance patients fgfr pikca tumour mutations design setting participants droplet digital polymerase chain reaction ddpcr assays developed tumour dna two patient cohorts screened fgfr pikca hotspot mutations one cohort included patients non muscle invasive bladder cancer nmibc cohort included patients bladder cancer undergoing radical cystectomy urine supernatants nmibc plasma samples nmibc patients harbouring mutations subsequently screened using ddpcr assays outcome measurements statistical analysis progression free survival recurrence free survival overall survival measured fisher exact test wilcoxon rank sum test cox regression analysis applied results limitations total nmibc patients patients harboured least one fgfr pikca mutation screening dna serial urine supernatants nmibc cohort revealed high levels tumour dna tdna associated later disease progression nmibc furthermore high levels tdna plasma samples associated recurrence cohort positive correlation tdna levels urine plasma observed correlation coefficient retrospective study design low volumes plasma available analysis limitations study conclusions increased levels fgfr pikca mutated dna urine plasma indicative later progression metastasis bladder cancer patient summary urine plasma patients bladder cancer may monitored diagnosis progression metastasis using mutation assays european association urology published elsevier rights reserved
background experiments using cre recombinase study smooth muscle specific functions rely strict specificity cre transgene expression therefore accurate determination cre activity critical interpretation experiments using smooth muscle specific cre methods results two lines smooth muscle protein alpha cre alpha cre mice bred foxed mice order define cre transgene expression southern blotting demonstrated alpha cre expressed tissues abundant smooth muscle also spleen consists largely immune cells including myeloid lymphoid cells pcr detected alpha cre expression peripheral blood peritoneal macrophages analysis alpha cre mice crossed recombination detector gfp mouse revealed gfp expression hence recombination circulating neutrophils monocytes flow cytometry conclusions alpha cre mediates recombination smooth muscle cells also myeloid cells including neutrophils monocytes macrophages given known contributions myeloid cells cardiovascular phenotypes caution taken interpreting data using alpha cre mice investigate smooth muscle specific functions strategies bone marrow transplantation may necessary alpha cre used differentiate contribution smooth muscle cells versus myeloid cells observed phenotypes elsevier inc rights reserved
background extended spectrum beta lactamase esbl producing bacteria resistant several types antibiotics excluding carbapenems transmissibility esbl producing enterobacteriaceae would depending bacterial property however elucidated clinical setting study attempted identify source outbreak esbl producing bacteria medical oncology immunology care unit methods esbl producing enterobacteriaceae esbl outbreak observed july august kagawa university hospital surveyed using various molecular microbiology techniques used pulsed field gel electrophoresis pfge pcr based esbl gene typing direct sequence esbl gene molecular microbiology typing method distinguish strain results typical prevalence esbl isolation unit per month per week prevalence esbl isolation target research period per month per week total isolates pneumoniae coli obtained clinical samples including four control strains two bacteria physically different obtained inpatient units hospital pulsed field gel electrophoresis pfge pneumoniae digested xbai produced similar patterns excluding one control strain pcr classification esbl gene pneumoniae revealed strains control strain carried shv ctx result reconfirmed direct dna sequencing although outbreak pneumoniae considered clonal pfge pcr classification esbl genes coli uncovered least six different non clonal strains possessing individual esbl gene patterns according result antibiogram pattern antimicrobial susceptibility variable pneumoniae coli conclusions typing pfge esbl gene pcr analysis practical discriminating various organisms cohort two outbreaks concomitantly spread different transmission strategies namely clonal non clonal unit might represent clinical evidence transmissibility differs according type strain speculated patient patient transmission esbl occurred according properties individual strain
background eye pigmentation abnormalities cattle often related albinism chediak higashi tietz like syndrome however mutations affecting pigmentation coat color eye also described herein holstein friesian cattle affected bicolored hypopigmented irises investigated results affected animals reveal ophthalmological neurological abnormalities besides specific iris color differences coat color affected cattle differ controls histological examination revealed reduction melanin pigment iridal anterior border layer stroma cases cause iris hypopigmentation analyze genetics iris pigmentation differences genome wide association study performed using illumina bovinesnp beadchip genotypes cases randomly chosen control animals significant association bovine chromosome bta identified position log analysis genotypic allelic dependences cases iridal hypopigmentation additional set randomly selected holstein friesian cattle controls showed allele position bta odds ratio confidence interval significantly increased chance iridal hypopigmentation conclusions clinical appearance iridal hypopigmentation differed previously reported cases pigmentation abnormalities syndromes like chediak higashi tietz seems mainly cosmetic character iridal hypopigmentation caused reduced content melanin pigment anterior border layer iridal stroma single genomic position bta detected significantly associated iridal hypopigmentation examined cattle knowledge first report phenotype holstein friesian cattle
background fasciolosis remains significant food borne trematode disease causing high morbidity around world affecting grazing animals humans deeper understanding concerning molecular mechanisms fasciola hepatica infection occurs well molecular basis involved acquiring protection extremely important designing selecting new vaccine candidates present study provides first report microarray based technology describing changes splenic gene expression profile mice immunised highly effective protection inducing multi epitope subunit based chemically synthesised vaccine candidate hepatica methods mice immunised synthetic peptides containing cell epitopes derived hepatica cathepsin amoebapore proteins novel vaccine candidates hepatica formulated adjuvant adaptation vaccination system experimentally challenged hepatica metacercariae spleen rna mice immunised highest protection inducing synthetic peptides isolated amplified labelled using affymetrix standardised protocols data background corrected normalised expression signal calculated ingenuity pathway analysis tool used analysing differentially expressed gene identifiers annotating bio functions constructing visualising molecular interaction networks results mice immunised combination three peptides containing cell epitopes induced high protection experimental challenge according survival rates hepatic damage scores also induced differential expression genes genes regulated genes regulated value fold change ranging functional study genes revealed changes pathways related nitric oxide reactive oxygen species production interleukin signalling production macrophages interleukin signalling regulation calcium binding protein matrix metallopeptidase cxc chemokine receptor genes conclusion data obtained present study provided comprehensive overview concerning possible molecular pathways implied inducing protection hepatica murine model could useful evaluating future vaccine candidates
background studies evaluated impact pre treatment drug resistance pdr response combination antiretroviral treatment cart children objective joint eurocoord chain eppicc penta project assess prevalence pdr mutations association virological outcome first year cart children methods hiv infected children copies months cart assessed cox proportional hazards models models adjusted baseline demographic clinical immunology virology characteristics calendar period cart start initial cart regimen results children vertically infected cart initiation median interquartile range age years cell count cells hiv rna log copies children confidence interval harboring virus pdr mutations children virus resistant prescribed drugs overall cumulative kaplan meier estimate virological failure cumulative risk tended higher among children harboring virus pdr resistant drug prescribed among receiving fully active cart versus multivariable analysis age associated higher risk reduced risk per additional year conclusions pdr significantly associated higher risk children first year cart risk decreased per additional year treatment initiation may due fading pdr mutations time lack appropriate formulations particular younger age group may important determinant virological failure
background gastric cancer second common cause global cancer related mortality although dedifferentiation predicts poor prognosis gastric cancer molecular mechanism underlying dedifferentiation could provide fundamental insights tumor development progression yet elucidated furthermore molecular mechanism underlying effects hexamethylene bisacetamide hmba recently discovered differentiation inducer requires investigation reported studies concerning effect hmba gastric cancer methods based results facs analysis levels proteins involved cell cycle apoptosis determined using western blotting single treatments sequential combinations hmba licl gsk beta proton pump investigated western blotting regulating akt expression akt infection investigate effects hmba protein localization activities gsk beta cdk cdk kinase assays immunoprecipitation western blotting performed addition northern blotting rnase protection assays carried determine functional concentration hmba results hmba increased kip expression induced cell cycle arrest associated gastric epithelial cell differentiation addition treating gastric derived cells hmba induced arrest regulation proton pump marker gastric cancer differentiation moreover treatment hmba increased expression activity gsk beta nucleus cytosol hmba decreased cdk activity induced pkip expression could rescued inhibition gsk beta furthermore hmba increased pkip binding cdk abolished gsk beta inhibition conclusions results presented herein suggest gsk beta functions regulating pkip assembly cdk thereby playing critical role arrest associated hmba induced gastric epithelial cell differentiation
background generic health status quality life qol instruments used patients common variable immune deficiency cvid however nature tools may underestimate impact diseases individual qol objective objective study develop validate questionnaire measure specific health related qol adults cvid cvid qol methods item content cvid qol questionnaire developed using focus groups individual patient interviews validation studies included adults cvid completed short form saint george respiratory questionnaire general health questionnaire euroqol questionnaire single session principal component factor analysis solutions identified scores similar number content solution validation factor scores performed construct validity reproducibility reliability convergent validity discriminant validity evaluated matrices consisting correlations items cvid qol calculated results factor analysis identified dimensions emotional functioning relational functioning gastrointestinal skin symptoms gss instrument good internal consistency cronbach alpha min gss max high reproducibility intraclass correlation coefficient min max scores showed good convergent validity correlating conceptually similar dimensions study scales acute relapsing infections significant impact conclusions study provides evidence reliability construct validity cvid qol identify qol issues patients cvid may addressed generic instruments authors published elsevier inc behalf american academy allergy asthma immunology open access article license
background germline mutations rearranged transfection ret proto oncogene cause multiple endocrine neoplasia men unclear whether distribution ret mutations varies among populations first nationwide study distribution ret mutations conducted results compared populations methods retrospective cohort study included patients underwent ret gene testing one three centers covering denmark september december primary testing method sanger sequencing included exons mutations defined according arup database july results ret mutations identified patients apparently unrelated families among families carried mutations codon four codon three codon one codon six codon one codon one codon one codon one codon five codon among families codon mutations mutation conclusions distribution ret mutations denmark appears differ populations mutations codon prevalent followed frequently reported mutations might due possible founder effect mutation however studies needed find possible explanations skewed mutational spectrum denmark
background gitelman syndrome rare autosomal recessively inherited salt wasting tubulopathy associated mutations slca gene encodes nacl cotransporter ncc kidney case presentation report describe two siblings sri lankan non consanguineous family presenting hypokalaemia associated renal potassium wasting hypomagnesemia hypocalciuria hypereninemic hyperaldosteronism normal blood pressure genetic testing showed homozygotes novel missense mutation exon slca gene previously reported literature association mother heterozygous carrier mutation father alive time testing novel mutation extends spectrum known slca gene mutations supports allelic heterogeneity interestingly siblings young onset diabetes strong family history conclusion findings implications providing appropriate genetic counseling family regard risk associated inbreeding detection carrier presymptomatic relatives expands known spectrum genotypic phenotypic characteristics gitelman syndrome
background glycosylation alterations associated development several human diseases animal models including multiple sclerosis objectives aimed determine whether immunoglobulin galactosylation might changed multiple sclerosis methods immunoglobulin isolated serum cerebrospinal fluid patients multiple sclerosis viral meningitis control patients without history inflammatory autoimmune disease lectin based assay used investigate potential galactosylation modifications immunoglobulin results conclusion galactosylation immunoglobulin isolated cerebrospinal fluid control patients found age gender dependent addition immunoglobulin galactosylation significantly altered cerebrospinal fluid serum multiple sclerosis patients furthermore modification correlated active progression multiple sclerosis finally loss galactosyl moieties simply associated inflammation change detected viral meningitis patients characterized brain inflammation
background growing evidence emphasizes relevance sphingolipids metabolism immunity antigen presenting cells apc apcs key players balancing tolerogenic encephalitogenic responses immunology contrast well known prominent effects sphingosine phosphate lymphocyte trafficking modulatory effects apcs fully characterized methods frequencies activation profiles dendritic cell subtypes monocytes cell subsets multiple sclerosis patients evaluated prior undergoing fingolimod treatment months impact fingolimod maturation activation profile pro inflammatory cytokine release phagocytotic capacity assessed vitro vivo modulation dependent programming naive cells well cell proliferation also investigated vitro vivo results fingolimod increased peripheral slandc count monocyte frequencies remained stable cell count decreased ratio treg significantly increased fingolimod treated patients time hladr inhibited upregulated dcs incubation presence fingolimod fingolimod associated reduced release pro inflammatory cytokines dcs monocytes vitro vivo fingolimod also inhibited phagocytic capacity slandcs monocytes fingolimod slandcs demonstrated reduced potential induce interferon gamma expressing expressing cells dependent cell proliferation vitro fingolimod treated patients conclusions present first evidence directed therapies act additionally immunomodulators decrease pro inflammatory capabilities apcs crucial element dependent cell activation programming
background hepatitis virus hbv infectious disease nine genotypes putative genotype objectives aim study identify rare codon clusters rcc hbv genome evaluate rccs hbv proteins structure methods detection protein family accession numbers pfam hbv proteins uniprot database pfam search tool used protein family accession numbers comprehensive accurate collection protein domains families contains annotation family form textual descriptions links resources literature references genome projects used famex tensively large scale functional annotation genomic data pfam database large collection protein families represented multiple sequence alignments hidden markov models hmms pfam search tools databases identify pfam proteins pfam ids analyzed sherlocc program location rccs hbv genome proteins detected reported translated embl nucleotide sequence data library trembl entries trembl computer annotated supplement swiss prot contains translations european molecular biology laboratory embl nucleotide sequence entries yet integrated swiss prot furthermore structures trembl entries proteins studied pdb database structures hbv proteins locations rccs visualized studied using swiss pdb viewer software results pfam search tool found nine protein families three frames results pfams studies sherlocc program showed program identified rccs external core antigen truncated hbeag gene hbv contrast rccs identified gene hepatitis core antigen residues large envelope protein residues protein residues dna polymerase viral terminal domain residues protein residues hbv genome seven rccs identified gene area hepatitis core antigen large envelope protein anddnapolymerase protein structures trembl entries sequences found sherlocc program outputs complete conclusions based location detected rccs structure hbv proteins found rccs may critical role correct folding hbv proteins considered drug targets results study provide new deep perspectives structure hbv proteins researches designing new drugs treatment hbv
background hepatocellular carcinoma hcc one common malignancies worldwide tumor recurrence metastasis major factors contribute poor outcome patients hcc long noncoding rnas lncrnas known regulate different tumorigenic processes growing body evidence indicates hippo kinase signaling inactivated many cancers however upstream lncrna regulators hippo kinase signaling hcc poorly understood methods using lncrna microarray identified novel lncrna whose expression significantly decreased highly aggressive hcc cell line hcclm compared mhccl cells furthermore evaluated expression clinical samples using situ hybridization ish quantitative real time polymerase chain reaction qrt pcr analysis full length transcript confirmed using rapid amplification cdna ends race analyses investigate biological function performed gain function loss function studies vitro vivo underlying mechanisms hcc investigated using rna pulldown rna immunoprecipitation ubiquitination assays western blotting mrna microarray analyses qrt pcr analyses results ish assay revealed expression significantly decreased paraffin embedded samples patients hcc compared adjacent tissues expression directly correlated patient prognosis furthermore defined full length transcript using race analysis overexpression inhibited hcc cell proliferation invasion metastasis vitro vivo whereas knockdown produced opposite results furthermore confirmed binds cula region inhibits nuclear export moreover demonstrated inhibits cula mediated ubiquitination lats increases yaps phosphorylation silence target genes yap finally positive correlation lats pyap confirmed paraffin embedded samples ish immunohistochemical staining conclusions study identifies novel lncrna represses hepatocellular carcinoma progression inhibiting cula mediated ubiquitination lats increasing yaps phosphorylation use lncrna may offer promising treatment approach inhibiting yap activating hippo kinase signaling
background heritability phenotypic molecular trait measures proportion variance attributable genotypic variance important concept breeding genetics methods available calculating heritability traits derived high throughput sequencing results propose several statistical models different methods compute test heritability measure data based linear generalized linear mixed effects models also provide methodology hypothesis testing interval estimation analyses show among methods negative binomial mixed model fit compound poisson mixed model fit variance stabilizing transformed linear mixed model vst outperform voom transformed linear mixed model voom fit vst appear robust fit estimating testing heritability scores fit computationally expensive fit performed best terms coverage confidence intervals addition applied methods microrna mirna messenger rna mrna sequencing datasets recombinant inbred mouse panel show mirna mrna expression highly heritable molecular trait mouse top heritable features coincide expression quantitative trait loci conclusions models methods investigated manuscript applicable extendable sequencing experiments biological replicates available environmental variation properly controlled fit approach assessing heritability implemented first time knowledge methods presented well generation simulated sequencing data either negative binomial compound poisson mixed models provided package heritseq
background home based interventions improve indoor air quality demonstrated benefits asthma morbidity yet little known effect environmental interventions school setting objective piloted feasibility effectiveness classroom based air cleaner intervention reduce particulate pollutants classrooms children asthma methods pilot randomized controlled trial assessed effect air cleaners indoor air particulate pollutant concentrations classrooms control intervention urban elementary schools enrolled children asthma control intervention aged years classroom air pollutant measurements spirometry completed twice randomization asthma symptoms surveyed every months results baseline classroom levels fine particulate matter particulate matter diameter black carbon respectively comparing intervention control group classroom levels reduced levels reduced first second follow periods respectively comparisons comparing children randomized intervention control classrooms modest improvement peak flow significant changes forced expiratory volume second fev asthma symptoms conclusions pilot study classroom based air cleaner intervention led significant reductions future large scale studies comprehensively evaluate effect school based environmental interventions pediatric asthma morbidity american academy allergy asthma immunology
background human papillomavirus hpv infection linked cervical cancer technological development molecular biology epidemiology detection treatment hpv become important mean prevent cervical cancer methods simple rapid sensitive colorimetric loop mediated isothermal amplification lamp method established herein detect hpv genotypes sequences primers lamp reaction located gene hpv genome fluorescent dye calcein added reaction reaction run isothermal conditions degrees minutes positive reaction indicated color change yellow fluorescent green fluorescence curve diagram represents monitoring real time quantitative instrument cervical swab samples patients single infections different hpv genotypes examined evaluate specificity results results revealed cross reaction hpv genotypes serial dilution cloned plasmid containing hpv gene sequences employed evaluate sensitivity different hpv subtypes different detection capability sensitivity different hpv subtypes tested lamp assay range copies per reaction lamp assay rdb reverse dot blot compared detecting genotyping hpv among clinical samples hpv positive specimens detected lamp rdb respectively well hpv positive specimens agreement lamp rdb assays kappa hpv positivity kappa hpv positivity conclusions concluded colorimetric lamp assay potential application rapid screening hpv infection resource limited hospitals rural clinics
background hyperthermia plays important role cancer therapy however radiation cause dna damage therefore genetic instability studied whether hyperthermia induce gene amplification cancer cells explored potential underlying molecular mechanisms materials methods hyperthermia hct colon cancer cells received water submerged heating treatment degrees min gene amplification assay using phosphoacetyl aspartate pala selection cabamyl synthetase aspartate transcarbarmylase dihydro orotase cad gene amplified cells southern blotting confirmation increased cad gene copies pala resistant cells gamma hax immunostaining detect gamma hax foci indication dna double strand breaks results heat exposure degrees min induces gene amplification frequency cad gene amplification increased folds respectively heat exposure degrees min induces dna double strand breaks hct cells shown gamma hax immunostaining conclusion study shows heat exposure induce gene amplification cancer cells likely generation dna double strand breaks believed required initiation gene amplification process may promoted heat cellular proteins responsible checkpoints dna replication dna repair telomere functions denatured knowledge first study provide direct evidence hyperthermia induced gene amplification elsevier inc rights reserved
background cat visual cortex critical period neuronal plasticity minimal approximately postnatal weeks peaks weeks gradually declines low levels weeks disappears year age dark rearing slows entire time course critical period weeks age normal cats plastic dark reared cats whereas weeks dark reared cats plastic thus stringent criterion identifying genes important plasticity visual cortex show differences expression normal dark reared opposite direction young versus older animals results present study reports identification differential display pcr novel gene alpha chimaerin candidate visual cortex critical period plasticity gene showed bidirectional regulation expression due age dark rearing northern blotting confirmed bidirectional expression race sequencing identified gene two alternatively spliced alpha chimaerin isoforms alpha alpha western blotting extended evidence bidirectional regulation visual cortex alpha chimaerin isoform expression protein cats mice alpha alpha chimaerin elevated dark reared compared normal visual cortex peak normal critical period normal compared dark reared visual cortex nadir normal critical period analysis variance showed significant interaction cats mice alpha chimaerin isoforms indicating effect dark rearing depended age differential expression found frontal cortex conclusions chimaerins rhogtpase activating proteins epha effectors implicated number processes including growth cone collapse axon guidance dendritic spine development formation corticospinal motor circuits present results identify alpha chimaerin candidate molecule role postnatal critical period visual cortical plasticity
background study evaluated respocheck mycoplasma triplex real time pcr detection bronchoalveolar lavage fluid balf mycoplasma dispar bovis bovirhinis three associated bovine respiratory disease brd primers probes respocheck mycoplasma triplex real time pcr based region rrna gene three mycoplasma species results analytical sensitivity respocheck triplex real time pcr determined spiking experiments mycoplasma strains phosphate buffered saline colony forming units cfu dispar cfu bovis bovirhinis analytical sensitivity respocheck mycoplasma triplex real time pcrwas determined purified dna dna per assay dispar bovis bovirhinis analytical specificity respocheck mycoplasma triplex real time pcr determined testing mycoplasmas strains bacterial strains bovis dispar bovirhinis respectively respocheck mycoplasma triplex real time pcr compared pcr dgge analysis bovis dispar bovirhinis respectively testing balf samples calves conclusion conclusion respocheck pcr assay valuable tool timely accurate detection three mycoplasma species associated bovine respiratory disease
background inferring ancestry region admixed individuals genomes useful studies ranging disease gene mapping speciation genetics current methods require high coverage genotype data phased reference panels therefore inappropriate many data sets present software application libs uses hidden markov model infer ancestry across hybrid genomes without requiring variant calling phasing approach useful non model organisms cases low coverage data ancient dna results demonstrate utility libs synthetic data use libs infer ancestry two published data sets european human genomes neanderthal ancestry brown bear genomes polar bear ancestry libs correctly infers ancestry simulations produces ancestry maps agree published results global ancestry estimates humans brown bears find polar bear ancestry published previously using libs existing software application local ancestry inference hapmix validate libs polar bear ancestry maps recovering geographic signal within bears mirrors seen snp data finally demonstrate libs effective hapmix inferring ancestry preexisting phased reference data unavailable genomes sequenced low coverage conclusions libs effective tool ancestry inference used even individuals available comparison genomes sequenced low coverage libs therefore likely useful studies non model ancient organisms lack large amounts genomic dna libs therefore expand range studies admixture mapping viable tool
background metastasis major cause death human colorectal cancer patients however contribution chemokines tumor microenvironment tumor metastasis fully understood methods herein examinined several chemokines colorectal cancer patients using chemokine elisa array immunohistochemistry used detect expression cxcl colorectal cancer patients tissues human hct cell lines stably transfected cxcl shcxcl shcxcr lentivirus plasmids used vitro study immunoblot immunofluorescence transwell assay used examine molecular biology morphological changes cells addition used nude mice detect influence cxcl tumor metastasis vivo results found cxcl overexpressed tumor tissues associated advanced tumor stage well poor prognosis colorectal cancer patients also demonstrated cxcl primarily expressed tumor cell cytoplasm cell membranes may indicate cxcl predominantly produced cancer epithelial cells instead fibroblasts tumor mesenchyme additionally overexpression cxcl enhanced migration invasion colorectal cancer cells inducing epithelial mesenchymal transition emt activation erk elk snail pathway akt gsk beta beta catenin pathway cxcr dependent manner silencing snail beta catenin attenuated cxcl cxcr enhanced cell migration invasion vitro elevated expression cxcl also potentiate metastasis colorectal cancer cells liver vivo nude mice intrasplenic injection model conclusion conclusion findings support cxcl promoter colorectal cancer metastasis predictor poor clinical outcomes colorectal cancer patients
background obesity asthma common health problems united states objective objective study evaluate clinical economic burdens obesity hospitalized children acute asthma exacerbation methods hospital discharge records patients aged years diagnosis asthma obtained kids inpatient database wherein data compiled agency healthcare research quality discharge records weighted estimate number hospitalizations asthma exacerbations united states classify whether patient obese used international classification diseases ninth revision clinical modification code compared odds using noninvasive invasive mechanical ventilation mean total charges inpatient service length hospital stay obese nonobese patients results total patient discharges extracted discharges excluded chronic medical conditions using discharge weight variables estimated total hospitalizations asthma exacerbations among children aged years obesity significantly associated higher odds using mechanical ventilation odds ratio higher mean total hospital charges adjusted difference longer mean length hospital stay days days compared nonobesity conclusions findings suggest obesity significant risk factor severe asthma exacerbation requires mechanical ventilation obesity economically complicating factor american academy allergy asthma immunology
background oridonin major terpene found rabdosia rubescens henmsl hara widely used dietary supplement therapeutic drug oridonin proven possess good anti tumour activity little known effect angiogenesis aim study investigate antiangiogenic effects oridonin vivo vitro prove oridonin anti tumour activity based suppressing angiogenesis methods vitro antiangiogenesis effect studied proliferation apoptosis migration invasion tube formation experiments human umbilical vascular endothelial cells huvecs vivo using fli gfp zebrafish model embryonic vasculogenesis postnatal regeneration evaluated vascular endothelial growth factor vegf signalling pathway gene expressions assessed reverse transcription polymerase chain reaction pcr furthermore inhibition effects tumour growth metastasis observed using xenograft zebrafish tumour model xenograft nude mouse tumour model angiogenesis assayed immunostaining cluster differentiation importantly proteins identified differentially expressed vivo model two dimensional electrophoresis mass spectrometry western blot results results indicated oridonin inhibited huvec proliferation migration invasion tube formation induced cell apoptosis oridonin inhibited zebrafish angiogenesis embryonic development tail fin regeneration pcr showed oridonin decreased vegfa vegfr vegfr expressions zebrafish expression increased moreover oridonin strong effects tumour growth metastasis vivo identified total proteins differentially expressed expressed expressed lastly showed claudin claudin claudin closely related tumour growth metastasis conclusion study demonstrated oridonin could inhibit tumour growth metastasis mainly based oridonin antiangiogenic effects claudin claudin claudin main contributors mechanism
background osteosarcoma common malignancy bone intratumoral hypoxia occurs many solid tumors associated development aggressive phenotype anril shown long noncoding rna facilitates progression number malignancies yet studies explored expression pattern anril osteosarcoma effect hypoxia anril methods evaluated expression levels anril osteosarcoma tissues adjacent normal tissues cells quantitative real time polymerase chain reaction multiple approaches including luciferase reporter assay nucleotide substitutions chromatin immunoprecipitation assay electrophoretic mobility shift assay used confirm direct binding hif alpha anril promoter region sirna based knockdown molecular biology techniques employed measure effect hif alpha expression anril results found expression anril upregulated pairs osteosarcoma compared adjacent normal tissues found hypoxia sufficient upregulate anril expression osteosarcoma cells mnng uos hif alpha directly binds putative hypoxia response element upstream region anril sirna small molecular inhibitors mediated hif alpha suppression attenuated anril upregulation hypoxic conditions upon hypoxia anril promoted cancer cell invasion suppressed cell apoptosis conclusion taken together data suggest hif alpha may contribute upregulation anril osteosarcoma hypoxic conditions anril involved hypoxia induced aggressive phenotype osteosarcoma
background ovarian cancer leading lethal gynecological malignancy united states doubt continued morbidity mortality ovarian cancer reflects poor understanding invasive mechanisms recent studies reveal ovarian cancers express aberrant micrornas mirnas mirs oncogenic tumor suppressor properties several studies suggested mir involved tumorigenesis presently investigate molecular mechanisms target mir ovarian cancer methods quantitative real time polymerase chain reaction western blot performed assess mir transcription factor tcf expression ovarian cancer normal ovary samples effect mir tcf determined luciferase reporter assay western blot effect mir tcf cell invasion quantitated using transwell invasion assay result mir expression increased ovarian cancer promoted invasive behavior ovarian cancer cell lines ovcar ovcar skov mir directly targeted tcf significantly decreased ovarian cancer tissue mir inhibited tcf expression consequence blunted inhibitory effect tcf cell invasion matrix metalloproteinases mmps play important role cancer invasion metastasis tcf inhibited mmp mmp decreased ovarian cancer cell invasion transfection tcf expression plasmid mir mimic diminished inhibitory effect tcf mmp mmp ovarian cancer cells conclusion mir appears important role spread ovarian cancer targeting tcf findings offer new mechanism ovarian cancer tumorigenesis could useful development new therapeutic approaches ovarian cancer treatment
background peptide protein toxins essential tools dissect probe biology target receptors venoms target vital physiological processes evoke pain snake venoms contain various factors ability evoke enhance sustain pain sensation number venom derived toxins shown directly target trpv channels expressed somatosensory nerve terminals evoke pain response toxins yet identified snake venoms methods screened echis coloratus saw scaled viper venom protein fractions isolated reversed phase hplc ability activate trpv channels end employed heterologous systems analyze trpv ngf pathways imaging electrophysiology combined molecular biology biochemical pharmacological tools results identified trpv activating proteins venom echis coloratus produce channel dependent increase intracellular calcium outwardly rectifying currents neurons heterologous systems interestingly channel activation mediated known toxin binding sites moreover although ngf neurotropic activity detected venom trpv activation independent ngf receptors conclusions echis coloratus venom contains proteins ability directly activate trpv activity independent ngf pathway mediated known trpv toxins binding sites general significance results could facilitate discovery new toxins targeting trpv enhance current understanding receptor activation mechanism furthermore findings study provide insight mechanism snakes venom elicit pain elsevier rights reserved
background polymorphisms genes encoding tumor necrosis factor alpha tnf alpha receptor tnf shown affect one person susceptibility develop certain neoplastic diseases aim present association study investigate whether single nucleotide polymorphisms snps tnf alpha tnf genes modulate susceptibility keratocystic odontogenic tumors kcots development serbian patients methods genotyping performed kcot patients healthy individuals using polymerase chain reaction restriction fragment length polymorphism analysis results significant difference genotype allele frequencies found patients controls snps carriers tnf alpha variant eightfold increase kcot risk carriers tnf variant approximately fourfold increase kcot risk conclusions findings suggest two polymorphisms strong risk factors kcot development serbian population
background previous genomewide association studies gwass identified number putative risk loci alcohol dependence however loci replicated replicated variants explain small proportion risk using innovative approach goal study generate hypotheses potentially causal variants explored functional studies methods employed targeted capture candidate loci flanking regions followed next generation deep sequencing mean coverage european americans regions included targeted capture library genes identified published gwas alcohol human alcohol aldehyde dehydrogenases reward system genes including dopaminergic opioid receptors prioritized candidate genes based previous associations genes involved absorption distribution metabolism excretion drugs performed single locus tests determine single variant associated symptom count sets variants overlapped biologically meaningful annotations tested association aggregate results single common variant significantly associated study however find evidence association several variant sets two variant sets significant value level genic enhancer adhfe alcohol dehydrogenase adora adenosine receptor belongs protein coupled receptor gene family conclusions knowledge first sequencing study examine variants entire genes including flanking regulatory regions found addition protein coding variant sets regulatory variant sets may play role findings generated initial functional hypotheses sets may influence
background probiotic supplementation women pregnancy lactation modulate breast milk composition immune benefits transferred infants aim aim study evaluate effect high dose probiotic supplementation women late pregnancy lactation cytokine profile secretory iga siga breast milk thus study differences breast milk composition affect lactoferrin siga levels stool samples newborns safety maternal probiotic administration neonatal growth pattern gastrointestinal symptoms also evaluated methods double blind placebo controlled randomized trial women took either probiotic placebo daily levels interleukins beta transforming growth factor beta tgf beta siga breast milk level siga lactoferrin newborn stool samples analyzed birth one month life antropometrical evaluation analysis gastrointestinal events newborns also performed results probiotic maternal consumption significant impact mean values colostrum tgf beta mean values mature breast milk fecal siga mean values higher newborns whose mothers took probiotic product control group probiotic maternal supplementation seems decrease incidence infantile colic regurgitation infants conclusion high dose multi strain probiotic administration women pregnancy influences breast milk cytokines pattern siga production newborns seems improve gastrointestinal functional symptoms infants
background ring finger protein rnf member transmembrane ubiquitin ligase family originally found stem cells plays important roles tumor formation progression previous study indicated rnf might tumor suppressor protein gastric cancer given antagonistic relationship leucine rich repeat containing protein coupled receptor lgr one gastric cancer stem cell markers investigation potential role rnf gastric stem cancer cells necessary methods immunohistochemistry staining western blot analysis quantitative reverse transcription polymerase chain reaction used determine mrna protein expression level rnf wnt pathway factors gastric cancer stem like cells obtained gastric cancer tumor cell lines tumorsphere culture adeno associated virus system used upregulate rnf expression cancer cells functional experiments including tumorsphere formation chemotherapy resistance surface marker detection tumor xenograft assay performed measure stem like properties gastric cancer stem like cells rnf overexpression results rnf loss significantly associated tnm stage distant metastasis lauren classification predicted worse prognosis gastric cancer patients rnf expression even lower tumorspheres derived tumor tissues cell lines compared adherent cancer cells normal gastric cells overexpression rnf gastric cancer cells impaired stem like properties including sphere formation ability chemoresistance vitro tumorigenicity vivo moreover wnt pathway related proteins decreased rnf overexpressing cells wnt pathway activators could reverse trend extent conclusions findings indicated rnf might participate gastric cancer progression also attenuate stemness gastric cancer stem like cells wnt beta catenin pathway
background rotaviruses major cause diarrhea among infants young children world causing deaths million hospitalizations year nepal rotavirus infection positivity rates ranges among children less years however little known molecular genotypes rotavirus prevailing objective study estimate burden rotavirus gastroenteritis determine genotypes rotavirus among children less years methods cross sectional study conducted january november among children less years old visiting kanti children hospital tribhuvan university teaching hospital rotavirus antigen detection performed enzyme linked immunosorbent assay elisa using prospect rotavirus microplate assay among rotavirus antigen positive samples samples used rotavirus rna extraction multiplex pcr performed identify type comprising type comprising results total diarrheal stool samples collected patients ranging days months age rotavirus antigen positive found among patients highest number diarrhea seen january molecular analysis rotavirus genotypes revealed predominant type followed predominant type followed total seven type combinations identified common conclusion rotavirus diarrhea mostly affecting children months nepal mostly occurring winter circulating genotypes country found primarily unusual genotypes predominance recommended conduct genotyping rotavirus large samples starting vaccination country
background sensitive methods detecting asymptomatic malaria infections essential identifying potential transmission reservoirs obtaining accurate assessment malaria epidemiology low endemicity areas aiming eliminate malaria pcr techniques detect parasite nucleic acids dna rna among commonly used molecular methods however methods low throughput used large scale molecular epidemiological studies recently developed capture ligation probe pcr clip pcr claimed sensitivity molecular techniques high throughput capacity needed screening purposes study aimed compare several molecular methods detecting asymptomatic submicroscopic plasmodium infections healthy residents malaria hypoendemic region southeast asia malaria elimination sight method study compared three molecular detection methods side side namely nested pcr targeting rrna genes nested pcr detect parasite rrna clip pcr detect parasite rrna healthy individuals northeastern myanmar nested pcr pcr parasite dna total rna extracted similar blood whereas rna used clip pcr disk dried blood filter paper sensitivity specificity methods compared conventional light microscopy addition pcr quantitative pcr qrt pcr targeting pvs gene plasmodium vivax used assess gametocyte prevalence samples results light microscopy detected plasmodium infections residents harbouring parasites clip pcr slightly better performance detected plasmodium infections population improvement achieved nested pcr detect parasite dna detected vivax plasmodium falciparum infections residents nested pcr targeting rrna however detected many individuals plasmodium infections vivax predominant species vivax falciparum falciparum vivax mixed infections plasmodium positive samples detected molecular methods pvs positive qrt pcr indicating large proportion asymptomatic individuals gametocyte carriers conclusion nested pcr based detection asexual stage parasite rrna sensitive sixfold higher sensitivity two molecular methods parasite detection clip pcr increased throughput sensitivity study much lower molecular methods may partially due smaller amount rna input used
background several lines evidence suggest dietary isoflavone genistein gen beneficial effects regard cardiovascular disease particular aspects related blood pressure angiogenesis biological action gen may least part attributed ability affect cell signalling response however far molecular mechanisms underlying activity gen endothelium unknown methods results examine transcriptional response gen primary human endothelial cells huvec applied cdna array technology baseline condition treatment pro atherogenic stimulus copper oxidized ldl alteration expression patterns individual transcripts substantiated using either pcr northern blotting gen significantly affected expression genes encoding proteins centrally involved vascular tone endothelin converting enzyme endothetin estrogen related receptor atria natriuretic peptide receptor precursor furthermore gen countered effect oxldl mrna levels encoding vascular endothelial growth factor receptor types conclusions data indicate physiologically achievable levels gen change expression mrna encoding proteins involved control blood pressure baseline conditions reduce angiogenic response oxldl endothelium elsevier rights reserved
background sugarcane saccharum spp main raw material sugar ethanol production among abiotic stress drought main one negatively impact sugarcane yield although gene expression analysis quantitative pcr qpcr increased knowledge biological processes related drought gene network mediates sugarcane responses water deficit remains elusive scenario validation reference gene major requirement successful analyzes involving qpcr results study candidate genes tested suitable reference genes qpcr analyses two sugarcane cultivars varying drought tolerance eight candidate reference genes evaluated leaves sampled plants subjected water deficit field greenhouse conditions addition five genes evaluated shoot roots plants subjected water deficit adding peg nutrient solution normfinder reffinder algorithms used identify stable gene among genotypes different experimental conditions algorithms revealed leaf samples ubq gapdh genes suitable reference genes whereas gapdh best reference one shoot roots conclusion reference genes suitable sugarcane water deficit identified would lead accurate reliable analysis qpcr thus results obtained study may guide future research gene expression sugarcane varying water conditions
background density host population key parameter underlying disease transmission also implications expression disease effect host physiology response higher densities individuals predicted either increase immune investment response elevated risk parasitism conversely decrease immune capacity consequence stress crowded environment however individual health shaped many different factors including genetic background current environmental conditions maternal effects indeed population density often sensed presence info chemicals environment may influence host interaction parasites also offspring may alter expression disease potentially uncouple presumed link changes host density disease outcomes results study used water flea daphnia magna obligate bacterial parasite pasteuria ramosa investigate signals high host density impact host parasite interactions two consecutive generations found chemical signals crowded treatments induced phenotypic changes parental offspring generations absence pathogen life history changes genotype specific consistent across generations even signal density removed contrast influence density infected animals depended trait generation exposure directly exposed signals high density host genotypes responded differently minimised severity disease yet subsequent generation influence density rarely genotype specific instead related ability host minimise onset infection conclusion findings reveal population level correlations host density infection capture part complex relationship crowding severity disease suggest besides role horizontal transmission signals density influence parasite epidemiology modifying mechanisms resistance across multiple generations elevating variability via genotype environment interactions results help resolve studies able find positive correlation high density resistance others uncover negative correlation even direct relationship
background fungal genus phlebia consists number species significant wood decay biotechnological potential species enzyme production degradation lignin pollutants previously studied species genus unknown therefore carried wider study biochemistry systematics phlebia species methods isolates belonging genus phlebia subjected four gene sequence analysis order clarify phylogenetic placement species level evolutionary relationships genus among phlebioid polyporales rrna encoding partial lsu two protein encoding gene gapdh rpb sequences adopted evolutionary analysis sequences aligned depth species level phylogeny fungal isolates cultivated semi solid milled spruce wood medium days order follow production extracellular lignocellulose converting oxidoreductases carbohydrate active enzymes results four gene phylogenetic analysis confirmed polyphyletic nature genus phlebia ten species level subgroups formed lignocellulose converting enzyme activity profiles coincided phylogenetic grouping highest enzyme activities lignin modification manganese peroxidase activity obtained phlebia radiata group supports previous studies enzymology gene expression species lignocellulosic substrates conclusions study implies species level connection molecular systematics genotype efficiency production lignocellulose converting carbohydrate active enzymes oxidoreductases enzyme phenotype spruce wood thus may propose similar phylogrouping approach prediction lignocellulose converting enzyme phenotypes new fungal species genetically biochemically less studied isolates wood decay polyporales
background highly pathogenic porcine reproductive respiratory syndrome virus prrsv continues pose one greatest threats swine industry protein conserved important structural protein prrsv however information host cellular proteins interact protein remains limited methods host cellular proteins interact protein prrsv immunoprecipitated marc cells infected prrsv hun using monoclonal antibody mab differentially expressed proteins identified screened proteins used bioinformatics analysis including gene ontology interaction network enriched kegg pathways interested cellular proteins validated interact protein results prrsv hun infection group bands compared control group bands included non redundant cellular proteins interact protein identified high confidence gene ontology kyoto encyclopedia genes genomes kegg pathway bioinformatic analyses indicated identified proteins could assigned several different subcellular locations functional classes functional analysis interactome profile highlighted cellular pathways associated protein translation infectious disease signal transduction two interested cellular proteins nuclear factor activated cells kda proliferating cell nuclear antigen pcna could interact protein validated confocal analyses conclusions interactome data prrsv protein cellular proteins identified contribute understanding roles protein replication pathogenesis prrsv interactome protein aid studies virus host interactions provide means decrease threat prrsv swine industry future
background phenomenon immune priming enhanced protection following secondary exposure pathogen demonstrated wide range invertebrate species despite accumulating phenotypic evidence knowledge mechanistic underpinnings currently limited used system red flour beetle tribolium castaneum insect pathogen bacillus thuringiensis molecular understanding oral immune priming phenomenon addressed ingestion bacterial cues derived spore supernatants orally pathogenic non pathogenic strain affects gene expression upon later challenge exposure using whole transcriptome sequencing approach results whereas gene expression individuals primed orally non pathogenic strain showed minor changes controls found priming pathogenic strain induced regulation large set distinct genes many known immune candidates intriguingly immune repertoire activated upon priming subsequent challenge qualitatively differed one mounted upon infection without previous priming moreover large subset priming specific genes showed inverse regulation compared regulation upon challenge conclusions data demonstrate gene expression upon infection strongly affected previous immune priming hypothesise shift gene expression indicates activation targeted efficient response towards previously encountered pathogen anticipation potential secondary encounter
background relation viral load disease severity childhood acute respiratory tract infections ari fully understood objectives assess clinical relevance relation viral load determined cycle threshold value real time reverse transcription polymerase chain reaction assays disease severity children single multiple viral ari study design children ari prospectively followed tested viruses correlations calculated values clinical parameters results single viral ari statistically significant correlations found viral loads respiratory syncytial virus rsv hospitalization viral loads human coronavirus hcov disease severity score multiple viral ari statistically significant correlations viral load clinical parameters found rsv rhinovirus multiple infections low viral load correlated high length hospital stay high duration extra oxygen use mean value hcov parainfluenza virus significantly lower single versus multiple infections conclusion although correlations values clinical parameters patients single multiple viral infection found clinical importance findings limited individual differences host viral laboratory factors complicate interpretation statistically significant findings multiple infections viral load used differentiate disease causing virus innocent bystanders elsevier rights reserved
background resilience ecosystems negative impacts generally higher high gene flow species diversity genetic diversity present population genetic studies suitable investigate genetic diversity estimate gene flow populations seaweed beds form dynamic shallow water ecosystem influenced climate change human exploitation seaweed beds particularly powerful model investigate ecosystem resilience coastal areas studied population genetic structure new nematode species paracanthonchus gynodiporata associated seaweeds northeastern brazil nematodes generally believed limited dispersal capacity lack planktonic larvae yet drift seaweeds water currents might natural barrier dispersal populations gynodiporata sampled coastline regions across major oceanic currents without historical exploitation seaweed results gynodiporata described integrative way using mitochondrial nuclear sequences morphological data model head region shows first time detailed view ventrosublateral teeth character often overlooked older taxonomic studies genus total mitochondrial coi haplotypes found one haplotype representing frequencies population amova showed overall little population genetic structure genetic subdivision populations influence two different water currents found effects historical seaweed exploitation population genetic diversity detected contrast significant differences populations found morphometric characters discrepancy genetic morphological differentiation populations across coastline surprising view frequently observed presence several cryptic species small geographical scale macroalgal associated nematodes conclusions results show cryptic species omnipresent marine nematode species suggesting nematodes associated seaweeds able disperse large distances across well known biogeographic barriers
background sodium taurocholate transporting polypeptide encoded slca identified functional receptor hepatitis virus hbv objective study determine association serphe variant hbv infection status moroccan patients methods using taqman allelic discrimination assay serphe variant genotyped chronic hepatitis patients individuals spontaneous clearance hbv infection healthy controls negative hepatitis serological markers results cohort detected wild type genotype groups polymorphism associated hbv infection status moroccan patients conclusions variant absent among moroccans regardless chronic hbv infection status
background steadily increasing field radical biochemistry dominated large family adenosylmethionine dependent enzymes called radical sam enzymes several new members discovered every year report hydroxyacyl coa dehydratases apply different method radical generation enzymes ketyl radicals formed one electron reduction oxidation recycled turnover without energy input earlier reviews hydroxyacyl coa dehydratases published kim hetzel boiangiu buckel fems microbiol rev buckel hetzel kim curr opin chem biol scope review review focuses four types hydroxyacyl coa dehydratases involved fermentation amino acids anaerobic bacteria especially clostridia enzymes require activation one electron transfer iron sulfur protein driven hydrolysis atp review describes proposed mechanism highlighted identification allylic ketyl radical intermediate elucidation crystal structure hydroxyisocapryloyl coa dehydratase hydroxybutyryl coa dehydratase crystal structure complete stereochemistry function several conserved residues around active site could identified finally potential biotechnological applications radical dehydratases presented general significance action activator archerase shooting electrons difficultly reducible acceptors becomes emerging principle anaerobic metabolism dehydratases may provide useful tools biotechnology article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
background telomere length subtelomeric methylated status peripheral blood leukocytes reported correlated many kinds pathophysiological conditions however correlation telomeric parameters patients physical ability known objective study aims study telomeric parameters including telomere length subtelomeric methylation status peripheral blood leukocytes associated physical inability patients cerebrovascular disease improvement inpatient rehabilitation methods physical ability female patients cerebrovascular disease admitted chronic disease ward kyushu university hospital assessed using barthel index telomeric parameters peripheral blood leukocytes determined southern blotting methylation sensitive insensitive isoschizomers results patients revealed significant correlation barthel score mean telomere length expression long telomeres improvement barthel index patients admission correlated telomere length subtelomeric hypermethylation long telomeres conclusions physical ability patients positively correlated lengths somatic telomeres recovery potential physical ability associated subtelomeric hypermethylated status stabilizing long telomeric structure copyright karger basel
background world top three cereals based monetary value rice wheat corn cereal crops dna extraction difficult owing rigid non cellulose components cell wall leaves high starch protein content grains advanced techniques molecular biology require pure quick extraction dna majority existing dna extraction methods rely long incubation multiple precipitations commercially available kits produce contaminant free high molecular weight dna results study compared three different methods used isolation high quality genomic dna grains cereal crop zea mays minor modifications dna grains two maize hybrids extracted using extraction methods dneasy qiagen plant mini kit ctab method without pvp modified mericon extraction genes coding ribosomal rna organized tandem arrays several thousand copies contain codes rrna units separated internal transcribed spacers rrna units evolutionary conserved regions show high level interspecific divergence used frequently genetic diversity phylogenetic studies study genomic dna amplified pcr using primers specific gene pcr products visualized agarose gel conclusion modified mericon extraction method found efficient dna extraction method capable provide high dna yields better quality affordable cost less time
background data burden malaria pregnancy mip laos malaria still remains prevalent south methods two cross sectional surveys conducted assess prevalence mip vapi district salavan province southern laos first consisted screening pregnant women pregnancies mean gestational age weeks living randomly selected villages vapi district second conducted among pregnant women delivered study period vapi toumlane district hospitals salavan provincial hospital peripheral placental malaria detected using rapid diagnostic tests rdt thick blood smears tbs real time quantitative polymerase chain reactions qpcr factors associated low birth weight lbw maternal anaemia assessed results villages women infected malaria determined qpcr plasmodium vivax infections mixed plasmodium vivax plasmodium falciparum infection among sub microscopic detected tbs history malaria current pregnancy tended associated higher risk mip airr delivery two plasmodium falciparum submicroscopic infections one peripheral one placental detected vapi district surveys infected women stated slept bed net night survey went forest food finding week survey median majority infections asymptomatic half associated anaemia overall women lbw newborns factors associated higher risk lbw tobacco use airr pre term delivery airr factors associated higher risk maternal anaemia iron supplementation pregnancy lao theung ethnicity place living conclusions prevalence mip population noticeable infections asymptomatic submicroscopic vivax malaria raises question reliability recommended national strategies screening prevention mip laos
background understanding genetic evolutionary mechanisms speciation genes sexually reproducing organisms would provide important insights mammalian reproduction fitness prdm widely known speciation gene recently gained attention important role meiotic recombination hybrid incompatibility despite fact prdm key regulator recombination plays dominant role hybrid incompatibility little known underlying genetic evolutionary mechanisms generated multiple copies prdm many metazoan lineages results present study reports evidence ruminant specific multiple gene duplication events likely occurred ancestral ruminant population diverged recent common ancestor ruminant speciation events presence three copies prdm one copy lineages chromosome chr two copies lineages iii chromosome chrx thus indicating possibility ancient inter intra chromosomal unequal crossing gene conversion events lineages characterized presence variable tandemly repeated zinc finger arrays lineage iii lost arrays zfs lineages particularly amino acid residues located positions evolved strong positive selection conclusions results demonstrated two gene duplication events prdm ruminants inter chromosomal duplication occurred chr chrx intra chromosomal linked duplication resulted two additional copies prdm ruminants observation duplication chrx chr rare may possibly happened due unequal crossing millions years ago sex chromosomes independently derived pair ancestral autosomes two copies lineages characterized presence variable sized tandem repeated zfs evolved strong positive selection concerted evolution supporting notion well established red queen hypothesis collectively gene duplication concerted evolution positive selection likely driving forces expansion ruminant prdm sub family
background understanding genetic basis adaptation high altitude life paramount importance preserving managing genetic diversity highland animals objective addressed mainly terrestrial fauna rarely aquatic animals tibetan schizothoracinae fish ideal model system evolutionary biology carrying key insights evolutionary genetics speciation adaptation high altitude gymnocypris przewalskii newly formed schizothoracinae fish species tibetan plateau inhabits chronic cold extreme saline alkaline aquatic environment lake qinghai thus evolving unique genomic signatures adapt extremely severe environments results characterize genomic features assembled novo transcriptome przewalskii lake qinghai intriguingly comparative genomic analyses przewalskii fish species identified potential expansions gene families related energy metabolism transport developmental functions possibly underlying adaptation environmental stresses comprehensive molecular evolution analyses found sets genes controlling mitochondrion ion homoeostasis acid base balance innate immunity show significant signals positive selection compared previous studies highland fishes failed identify positively selected genes related hypoxia response conclusions findings provide comprehensive insights genetic basis teleost fish underlie adaptation extreme high altitude aquatic life tibetan plateau
background upstream open reading frames uorfs commonly found untranslated region utr many genes function translational control however little known existence proteins encoded uorfs role proteins except translational control report uorfs mckusick kaufman syndrome mkks gene causes genetic disorder methods northern blotting race bioinformatics used determining length transcripts ends luciferase assay vitro translation used evaluation translational regulatory activity uorfs immunoblotting immunocytochemical analyses used detection uorf derived protein products subcellular localization results mkks gene generates two types transcripts canonical long transcript encodes uorfs mkks short transcript encodes uorfs using alternative polyadenylation sites utr simultaneous disruption uorf initiation codons increased translation downstream orf furthermore protein products two longest uorfs detected mitochondrial membrane fraction hela cells database searches indicated uorfs active alternative polyadenylation sites utr atypical surely exist human transcripts conclusions multiple uorfs utr mkks long transcript function translational repressor mkks two uorfs translated vivo imported onto mitochondrial membrane general significance findings provide unique insights production uorf derived peptides functions uorfs elsevier rights reserved
background circulating levels chemerin significantly higher hypertensive patients positively correlate blood pressure chemerin activates chemokine like receptor cmklr chemr proposed activate orphan protein coupled receptor gpr linked hypertension aim localize chemerin cmklr gpr human vasculature determine whether receptors mediate vasoconstriction methods results using immunohistochemistry molecular biology conduit arteries veins resistance vessels localized chemerin endothelium smooth muscle adventitia found cmklr gpr widely expressed smooth muscle chemerin contracted human saphenous vein resistance arteries increased blood pressure rats nmol crucially vitro vivo vascular actions blocked ccx confirmed highly selective cmklr gpr inhibited camp accumulation human aortic smooth muscle cells preconstricted rat aorta consistent observed vasoconstrictor action downstream signaling explored compared chemerin showed bias factor approximate protein pathway suggesting cmklr exhibits biased agonism conclusions data suggest chemerin acts cmklr gpr increase blood pressure chemerin established detrimental role metabolic syndrome direct vascular actions may contribute hypertension additional risk factor cardiovascular disease study provides proof principle therapeutic potential selective cmklr antagonists
backgroundclinical efficacy pollen allergen immunotherapy ait broadly documented randomized controlled trials underlying clinical endpoints analysed seasonal time periods predefined based background pollen concentration however validated generally accepted definition academia regulatory authorities relevant pollen exposure intensity period time season currently available therefore task force initiative european academy allergy clinical immunology eaaci aimed propose definitions based expert consensus methodsa task force immunotherapy aerobiology pollution interest groups eaaci reviewed literature pollen exposure context defining relevant time intervals evaluation efficacy ait trials underlying principles measuring pollen exposure associated methodological problems limitations considered achieve consensus resultsthe task force achieved comprehensive position defining pollen exposure times different pollen types definitions presented pollen season high pollen season peak pollen period high pollen days conclusionthis eaaci position paper provides definitions pollen exposures different pollen types use ait trials validity standards remains tested future studies
backgroundin bangladesh nomadic duck flocks groups domestic ducks reared egg production moved access feeding sites beyond owners village boundaries housed overnight portable enclosures scavenging areas objectives study measure prevalence influenza virus rna specific antibodies nomadic ducks characterize nomadic duck raising practices northeastern bangladesh methodswe tested duck egg yolk specimens competitive elisa detect antibodies avian influenza environmental fecal samples real time reverse transcription polymerase chain reaction rrt pcr detect influenza virus rna subtype resultsthe median age ducks months range months median flock size ducks range egg yolk samples confidence interval positive antibodies flocks least one egg specific antibodies fecal samples detectable influenza rna thirty three flocks least one fecal sample positive influenza rna conclusionsnomadic ducks bangladesh commonly infected avian influenza virus may serve bridging host transmission avian influenza virus avian influenza viruses subtypes wild waterfowl backyard poultry humans bangladesh
backgroundmolecular testing inform treatment clinical trial choices standard care several types cancer however established guidelines exist type information physicians cover discussions patient test results objectives study identify physician patient preferences regarding information communicate information inform guidelines conversations methodsphysicians patients participated discussions regarding molecular testing asked choose topics relevance list mcnemar test used determine top preferences patients asked identify information wanted receive inform physicians asked identify best aid communication resultssixty six patients identified preferred topics benefits testing testing determines treatment implications family whether test indicates seriousness disease purpose test incidental findings explanation cancer genetics test done limitations explanation biomarker risks uninformative results physicians added cost patients preferred receiving information molecular testing nurse physician physicians preferred using pamphlet augment communication conclusionsthe topics identified important discuss inform future guidelines contribute effective communication regarding molecular testing cancer american cancer society study provides important information regarding topics cancer patients perceive relevant discussions molecular testing authors recommend preferred topics discussed
backgroundpatterns influenza molecular viral shedding following influenza infection well established predictors viral shedding however remain uncertain objectiveswe sought determine factors associated peak molecular viral load duration shedding viral area curve auc children adult hutterite colony members laboratory confirmed influenza methodsa cohort study conducted hutterite colonies alberta canada flocked nasal swabs collected three influenza seasons symptomatic asymptomatic individuals infected influenza samples tested real time reverse transcription polymerase chain reaction influenza influenza viral load determined influenza positive samples resultsfor seasonal younger age associated larger auc female sex associated decreased peak viral load reduced viral shedding duration presence comorbidity associated increased peak viral load younger age associated increased peak viral load increased auc pandemic younger age associated increased peak viral load increased viral auc female sex associated reduced peak viral load inapparent infection associated reduced peak viral load reduced viral shedding duration reduced viral auc conclusionspatterns molecular viral shedding vary age sex comorbidity presence symptoms predictor variables vary influenza subtype
background recent exome sequencing studies identified filamin flnc candidate gene hypertrophic cardiomyopathy hcm aim determine rate flnc candidate variants large cohort hcm patients also sequenced main sarcomere genes methods results total hcm patients next generation sequenced semiconductor chip technology myh mybpc tnnt tnni actc tnnc myl myl tpm flnc genes also sequenced healthy controls population based reported population frequencies bioinformatic criteria familial segregation identified flnc candidate variants new nonsense missense patients compared patients control missense variants nonreported fisher exact probability test based familial segregation reported functional studies candidate variants patients finally classified likely pathogenic variants uncertain significance likely benign conclusions provide compelling evidence involvement flnc development hcm flnc variants associated mild forms hcm reduced penetrance affected families confirm segregation work together others found flnc variants among patients dilated restrictive cardiomyopathies pointed gene important cause structural cardiomyopathies
background effects lifestyle risk factors considered collectively human metabolism date unknown aim investigate association risk factors metabolites changes years methods results one hundred sixty three metabolites measured serum samples absoluteidq kit biocrates following targeted metabolomics approach population based cohort individuals aged years baseline evaluated associations metabolite concentrations acylcarnitines amino acids lysophosphocholines phosphocholines sphingomyelins sum hexoses lifestyle risk factors body mass index bmi alcohol consumption smoking diet exercise multilevel simple linear regression modeling adjusted relevant covariates used evaluation cross sectional longitudinal associations respectively multiple testing correction based false discovery rate bmi alcohol consumption smoking associated lipid metabolism reduced lyso acyl alkyl phosphatidylcholines increased diacylphosphatidylcholines concentrations smoking showed positive associations acylcarnitines bmi correlated inversely nonessential amino acids fewer metabolites showed relative changes associated baseline risk factors increases different acyl alkyl phosphatidylcholines associated lower alcohol consumption bmi healthier diet increased levels tyrosine associated bmi sex specific effects smoking bmi found specifically related acylcarnitine metabolism women higher bmi men pack years associated increases acylcarnitines conclusions study showed sex specific effects lifestyle risks factors human metabolism highlighted long term metabolic consequences
background rapid expansion genetic testing led increased utilization clinical whole exome sequencing wes clinicians genetic researchers faced assessing risk disease vulnerability incidentally identified genetic variants typified variants found genes associated sudden death predisposing catecholaminergic polymorphic ventricular tachycardia cpvt sought determine whether incidentally identified variants genes associated cpvt wes clinical testing represent disease associated biomarkers methods results cpvt associated genes ryr casq variants identified one world largest collections clinical wes referral tests baylor miraca genetics laboratories compared control cohort ostensibly healthy individuals case cohort cpvt cases within wes cohort rate rare variants cpvt associated genes compared among controls among cases predominance variants undetermined significance protein topology mapping wes variants colocalized frequently residues variants found controls compared cases retrospective clinical evaluation individuals referred institution wes positive variants demonstrated evidence clinical cpvt individuals low pretest clinical suspicion cpvt conclusions prevalence incidentally identified cpvt associated variants approximate among wes tests variants undetermined significances cpvt associated genes wes genetic testing absence clinical suspicion cpvt unlikely represent markers cpvt pathogenicity
bacterial anaerobic respiration using selenium oxyanions sole electron acceptor primarily result precipitation selenium biominerals observed either intracellular extracellular selenium deposits although better understanding enzymology bacterial selenate reduction emerging processes selenium nanospheres constructed cases secreted remained poorly studied thauera selenatis gram negative betaproteobacterium capable respiring selenate due presence periplasmic selenate reductase serabc serabc molybdoenzyme catalyses reduction selenate selenite accepting electrons pool via dihaem type cytochrome cytc product selenite presumed reduced cytoplasm forming intracellular selenium nanospheres ultimately secreted surrounding medium secretion selenium nanospheres accompanied export similar kda protein sefa selenium factor sefa cleavable signal peptide suggesting also exported directly cytoplasmic compartment suggested sefa functions stabilize formation selenium nanospheres secretion possibly providing reaction sites selenium nanosphere creation providing shell prevent subsequent selenium aggregation present paper draws current knowledge selenate respiration selenium biomineralization selenatis analogous systems extends application nanoparticle tracking analysis determine size distribution profile selenium nanospheres secreted
bacteriophages source many valuable tools molecular biology genetic manipulation streptomyces dna cloning vectors based serine integrase site specific dna recombination systems derived phage efficiency simplicity serine integrases also used diverse synthetic biology applications present genome new streptomyces phage phi joe investigate conditions integration excision phi joe genome phi joe belongs largest streptomyces phage cluster like encodes serine integrase attb site streptomyces venezuelae used efficiently integrating plasmid pcmf constructed using phi joe int attp locus attb site phi joe integrase occupied several streptomyces genomes including coelicolor mobile element varies gene content size host species serine integrases require phage encoded recombination directionality factor rdf activate excision reaction phi joe rdf identified function confirmed vivo integrase rdf active vitro recombination assays phi joe site specific recombination system likely important addition synthetic biology genome engineering toolbox importance streptomyces spp prolific producers secondary metabolites including many clinically useful antibiotics bacteriophage derived integrases important tools genetic engineering enable integration heterologous dna streptomyces chromosome ease high efficiency recently researchers applying phage integrases variety applications synthetic biology including rapid assembly novel combinations genes biosensors biocomputing important requirement optimal experimental design predictability using integrases however need multiple enzymes different specificities integration sites order provide broad platform integrases identified validated integrase newly isolated streptomyces phage phi joe phi joe integrase active vitro vivo specific recognition site integration present wide range different actinobacteria including streptomyces venezuelae emerging model bacterium streptomyces research
basement membranes maintain epithelial phenotype prevent invasion metastasis hypothesized expression basement membrane laminins might regulated epithelial mesenchymal transition emt hallmark cancer progression emt mediated transcription factor snail used oral squamous carcinoma cells obtained primary tumor emt experienced recurrence snail transfected cells sna displaying full emt model study laminins receptors northern blotting immunofluorescence immunoprecipitation showed gradual loss laminin receptor lutheran sna cells contrast neoexpression laminin alpha mrna found congruent synthesis laminin chromatin immunoprecipitation disclosed direct binding snail regions upstream laminin alpha alpha genes immunofluorescence immunoprecipitation showed switch hemidesmosomal integrin alpha beta alpha beta neoexpression alpha beta sna cells upregulation integrin linked kinase sna cells cells adhered potently laminin fibronectin whereas adhesion laminin minimal contrast laminin inhibited cell adhesion extracellular matrix proteins conclusion emt induces switch laminin laminin expression may directly controlled snail concomitant changes take place laminin collagen binding receptors laminin reduces adhesion laminin fibronectin suggesting tumor cells could utilize laminin invasive behavior
basic fibroblast growth factor bfgf regulates pluripotent marker expression cellular differentiation various cell types however mechanism bfgf regulates rex expression stem cells isolated human exfoliated deciduous teeth sheds remains unclear aim present study investigate regulation rex expression bfgf sheds sheds isolated characterized mrna protein expression levels determined using real time polymerase chain reaction enzyme linked immunosorbent assay respectively experiments chemical inhibitors added culture medium impede specific signaling pathways cells isolated human exfoliated deciduous tooth dental pulp tissue expressed mesenchymal stem cell surface markers cells differentiated osteogenic adipogenic lineages appropriately induced treating sheds bfgf induced rex mrna expression effect attenuated pretreatment fgfr akt inhibitors cycloheximide pretreatment also inhibited bfgf induced rex expression implying involvement intermediate molecule addition neutralizing antibody attenuated bfgf induced rex expression sheds conclusion bfgf enhanced rex expression sheds via fgfr akt signaling pathways moreover participated bfgf induced rex expression sheds wiley periodicals inc
limitations standard culture techniques development new recombinant protein expression systems biotechnological potential key challenge ideally systems able effectively accurately synthesize protein interest intrinsic metabolic capacity describe system designed based plasmid vector containing promoter elements derived metallothionein mtila promoter well processing purification elements promoter induced heavy metals culture medium induce synthesis human prostate specific antigen hpsa modified insert elements purification proteolysis secretion optimized hpsa production system comparing effects contributions zncl cdcl cuso hekft hela bhk cho cells also compared effectiveness three different transfection agents multi walled carbon nanotubes lipofectamine tremegene reagent hpsa production confirmed via detection enhanced green fluorescent protein fluorescence cell viability determined expression hpsa compared native protein produced lncap cells using enzyme linked immunosorbent assay sodium dodecyl sulfate polyacrylamide gel electrophoresis tremegene reagent bhk cell line cuso showed highest hpsa production rates furthermore bhk cells resistant oxidative stress caused cuso results suggest proposed optimized inducible expression system effectively produce recombinant proteins desired characteristics wide range applications molecular biology
beckwith wiedemann syndrome bws russell silver syndrome growth disorders opposing epimutations affecting igf imprinting center overgrowth tumor risk bws caused aberrant expression paternally expressed imprinted igf gene occurring consequence mosaic hypermethylation within imprinting center mosaic paternal uniparental disomy upd characterized severe intrauterine growth retardation iugr subset cases recently shown mosaic hypomethylation within igf imprinting center predicted silence paternally expressed igf early development molecular diagnosis bws involves methylation analysis locus enabling discrimination allelic methylation patterns study methylation sensitive high resolution melting analysis hrm used analyze methylation within intergenic region locus total samples comprising normal control bws six dna analyzed blinded study scored hypermethylated normal hypomethylated results compared derived methylation sensitive southern blotting using restriction enzymes rsa hpa total concordance obtained southern blotting hrm scores total three samples paternal duplication affecting igf region scored equivocal methods however samples unambiguously scored hypermethylated hypomethylated normally methylated using hrm conclude hrm rapid cost effective sensitive method screening mosaic methylation changes locus bws hum mutat wiley liss inc
berberine traditionally used treat gastrointestinal motility disorders interstitial cells cajal iccs pacemaker cells gastrointestinal tract responsible production gut movements present study aimed investigate effects berberine pacemaker potentials pps cultured icc clusters mouse small intestine sought identify receptors involved underlying mechanisms action experiments performed cultured iccs whole cell patch clamp configuration used record pps icc clusters current clamp mode current clamp mode berberine shown decrease amplitude frequency pps however effects suppressed treatment glibenclamide specific atp sensitive channel blocker binaltorphimine dihydrochloride kappa opioid receptor antagonist suppress berberine induced inhibition whereas ici delta opioid receptor antagonist ctop opioid receptor antagonist suppress inhibitory effects berberine pretreatment adenylate cyclase inhibitor protein kinase inhibitor suppress effects berberine however pretreatment oxadiazolo quinoxalin one guanylate cyclase inhibitor protein kinase pkg inhibitor addition berberine stimulated cyclic guanosine monophosphate cgmp production iccs observations indicate berberine may inhibit pacemaker activity icc clusters via atp sensitive channels cgmp pkg dependent pathway stimulating delta opioid receptors therefore berberine may provide basis development novel agents treatment motility dysfunction
beta glucosidase essential part cellulase enzyme system efficient complete hydrolysis biomass psychrotolerant pseudomonas lutea produced glucosidase lower temperature optima hence play important role bringing energy requirement bioethanol production enhance glucosidase production two statistical tools taguchi box behnken designs applied reveal influential factors respective concentration maximum production glucosidase submerged fermentation optimal medium composition maximum glucosidase production bagasse yeast extract triton nano temperature degrees optimized conditions glucosidase production increased fold shake flask large scale production stirred tank bioreactor resulted higher glucosidase production within incubation fold higher shake flask studies commercial cellulase celluclast supplemented crude glucosidase resulted improved sugar release gds paddy straw comparatively low temperature degrees saccharification lutea therefore showed great potential cold active glucosidase production used accessory enzyme along commercial cellulase improve saccharification efficiency international union biochemistry molecular biology inc
beta keratins reptilian scales recently cloned characterized lizards report first time sequence beta keratins snake elaphe guttata five different cdnas obtained using race analyses four sequences differ nucleotides coding region whereas last cdna shows region identity gene corresponding one cdna sequences single intron present untranslated region genomic organization similar birds beta keratins cloning southern blotting analysis suggest snake beta keratins belong family high related genes geckos pcr analysis suggests head tail orientation genes chromosome situ hybridization detected beta keratin transcripts almost exclusively differentiating oberhautchen beta cells snake epidermis renewal phase confirmed northern blotting showed phase high expression two different transcripts whereas longer transcript expressed much lower level resting skin cdna coding sequences encoded putative glycine proline serine rich proteins containing amino acids apparent isoelectric point central region rich proline shows homology avian scale claw feather keratins prediction secondary structure shows mainly random coil conformation strand regions central region likely involved formation fibrous framework beta keratins region possibly present basic reptiles originated reptiles birds developmental dynamics wiley liss inc
july june total fecal specimens collected children years age acute gastroenteritis admitted kiambu county hospital central kenya specimens screened group rotavirus rva using elisa rva positive specimens subjected semi nested pcr determine genotypes rva detected fecal specimens rva infections occurred age groups months early peak months infections persisted year round distinct seasonal peaks depending year predominant genotype followed yearly change genotypes major shift found phylogenetic analysis nucleotide sequences genes seven strains unusual showed nucleotide sequences clustered lineage african strains included least two distinct nucleotide sequences strains results represent basic data rva strains circulating region vaccine introduction wiley periodicals inc
big bluestem dominant warm season perennial native grass underutilized potential bioenergy crop objective study leverage high throughput cost effective phenotype cellulose hemicellulose contents big bluestem biomass using near infrared nir spectroscopy facilitate plant breeding genetics studies order develop nir prediction models set big bluestem samples seven genotypes four planting locations analyzed according traditional wet chemical methods advanced multivariate analysis techniques nir spectroscopy improved prediction models based value coefficient determination partial least squares proved better quantitative method principal component regression based larger ratio standard error prediction set sample standard deviation rpd root mean square error prediction rmsep developing nir prediction models spectral range first derivative treatment yielded better prediction model full range rmsep rpd validation sample set cellulose rmsep rpd hemicellulose models provide good insight relationship chemical bonds structure sugars big bluestem allowing rapid accurate determination cellulose hemicellulose contents low cost elsevier ltd rights reserved
biocatalysis fundamental concept biotechnology topic integrates knowledge several disciplines therefore included course design optimization biological systems offered biochemistry curricula selected ciliate tetrahymena example eukaryotic system potential biotransformation sterol metabolites industrial interest particular focused conversion cholesterol provitamin students work wild type recombinant strains learn sterol pathways could modified obtain diverse sterol moieties course students identify measure concentration sterols also search related genes bioinformatic analysis additionally students compare biotransformation rates growing ciliate plate bioreactor finally use fluorescence microscopy localize enzyme involved biotransformation last day team makes oral presentation explaining results obtained responds series key questions posed teachers determine final mark experience course enables undergraduate students become acquainted principles biocatalysis well standard modern techniques simple robust laboratory exercise using biological system conversion valuable pharmaceutical moieties international union biochemistry molecular biology
biological denitrification typically requires addition supplemental electron donor add significant operating expense wastewater treatment facilities common electron donors organic reduced inorganic sulfur compounds riscs sulfide elemental sulfur may cost effective inexpensive well characterized electron donor provides slow denitrification rates due low solubility lesser known risc sulfite easily produced simple combustion process unlike highly soluble therefore may provide higher denitrification rates however little known microbial denitrification also strong reductant reacts abiotically oxygen toxic effects microorganisms paper reviews environment chemistry microbiology toxicity potential use denitrification since intermediate sulfur oxidation pathway sulfur oxidizing microorganisms energetic electron donor select oxidizing community review literature well lab experience suggests effectively serve electron donor denitrification research needed determine kinetics based denitrification toxic threshold sulfur oxidizing microorganisms potential inhibition sensitive species nitrifying microorganisms potential formation nitrous oxide effect sludge settling efficiency also explored
biomineralogy inherently interdisciplinary pursuit largely stems fact techniques used investigate given bio mineral ideally married techniques provide insight biological mechanisms form mineral vice versa observe two broad challenges inhibit fluent exchange ideas information mineralogists materials scientists biologists first smorgasbord emerging rapidly evolving techniques available mineralogists biologists alike make difficult expert remain contemporary bewildering non expert second truly integrate relate specific biological insight genesis biomineral effect insight properties mineral trivial propose evolutionary developmental biology evo devo approach address challenge also provide deep insight rich diversity metazoan mineralised structures evolved evo devo approach biomineralogy previously employed groups recent exciting methodological developments available molecular biologist make strategy even attractive short review aim outline perception role evo devo play within field biomineralogy taking case study past achievements recent insights future research directions associated gastropod shell formation elsevier inc rights reserved
blastocystis genetically diverse intestinal parasite controversial pathogenic potential increasingly incriminated diarrheal illness immunocompromised individuals including colorectal cancer crc patients aim current study assess possible association blastocystis infection crc condition makkah saudi arabia ksa methods stool samples collected non cancer cancer subjects including crc patients patients cancers outside gastrointestinal tract cogt molecularly confirmed blastocystis isolates genetically grouped subtyped using multiplex polymerase chain reaction restriction fragment length polymorphism pcr rflp sequence tagged site primers based pcr pcr sts respectively results blastocystis hominis confirmed among crc cogt patients respectively obtained blastocystis isolates initially categorized groups subsequently subtyped different subtypes subtype subtype subtype interestingly subtype predominantly detected subtype among crc patients significant association risk cor conclusion best knowledge current study first provide genetic insights prevalence blastocystis hominis among crc patients makkah ksa moreover study suggests possible association subtype blastocystis hominis crc could indicate potential influence blastocystis crc condition studies required confirm association risk investigate possible underlying mechanism postulated carcinogenic influence blastocystis hominis subtype
blood acid base regulation specialized epithelia gills kidney requires ability sense blood acid base status developed primary cultures ray urolophus halleri gill cells study mechanisms acid base sensing without interference whole animal hormonal regulation ray gills abundant base secreting cells identified noticeable expression vacuolar type atpase vha also express evolutionarily conserved acid base sensor soluble adenylyl cyclase sac exposure cultured cells extracellular alkalosis hco triggered vha translocation cell membrane similar previous reports live animals experiencing blood alkalosis vha translocation dependent sac blocked sac specific inhibitor ray gill base secreting cells also express transmembrane adenylyl cyclases tmacs however tmac inhibition dideoxyadenosine prevent alkalosis dependent vha translocation tmac activation forskolin reduced abundance vha cell membrane study demonstrates sac necessary sufficient sensor extracellular alkalosis ray gill base secreting cells addition study indicates different sources camp differentially modulate cell biology
blood transcriptional profiles could serve biomarkers clinical changes subjects risk diagnosed diabetes however transcriptional variation time poorly understood due impracticality frequent longitudinal phlebotomy large patient cohorts developed novel transcriptome assessment method could applied fingerstick blood samples self collected study volunteers fifteenl blood fingerstick yielded sufficient rna analyse transcripts high throughput quantitative polymerase chain reaction pcr enrolled subjects type diabetes controls perform weekly collections home period months subjects returned average total weekly samples transcript data obtained successfully samples returned high degree correlation fingerstick data data standard venipuncture sample observed increases interferon stimulated gene expression associated self reported respiratory infections indicating real world transcriptional changes detected using assay summary show longitudinal monitoring gene expression feasible using ultra low volume blood samples self collected study participants home used monitor changes gene expression frequently extended periods
bone remodelling maintains bone mass constant adulthood energy demanding process together observation adipocyte derived hormone leptin major inhibitor bone remodelling led hypothesis bone cells regulate energy metabolism endocrine mechanism studies test hypothesis identified osteocalcin hormone secreted osteoblasts positive regulator insulin secretion insulin resistance energy expenditure remarkably insulin signalling osteoblasts positive regulator osteocalcin production activation via ability indirectly enhance bone resorption osteoclasts contrast leptin potent inhibitor osteocalcin function effect sympathetic tone hence osteocalcin part complex signalling network bone organs classically associated regulation energy homeostasis pancreas adipose tissue review summarises molecular cellular bases present knowledge osteocalcin biology discusses potential relevance osteocalcin human metabolism pathology
boron recognized since essential micronutrient element higher plants years many roles boron plants proposed including functions sugar transport cell wall synthesis lignification cell wall structure carbohydrate metabolism rna metabolism respiration indole acetic acid metabolism phenol metabolism membrane transport however mechanism boron involvement case remains unclear recent work focused two major plant cell components cell walls membranes boron could play structural role bridging hydroxyl groups membranes could also involved ion transport redox reactions stimulating enzymes like nicotinamide adenine dinucleotide reduced nadh oxidase narrow window levels boron required toxic plants mechanisms boron toxicity also unknown nitrogen fixing leguminous plants foliarly applied boron causes increase concentration allantoic acid leaves vitro studies show boron inhibits manganese dependent allantoate amidohydrolase foliar application manganese prior application boron eliminates allantoic acid accumulation leaves interaction berate divalent cations like manganese may alter metabolic pathways could explain higher concentrations boron toxic plants
micrornas helper cells involve autoimmune diseases effects interactions immune thrombocytopenia itp remain unclear present study investigated expression profiles seven immune related micrornas mir frequencies four cells treg peripheral blood mononuclear cell pbmcs itp patients healthy controls platelet autoantibodies specific gpiib iiia gpib measured using maipa method regulating effect mir differentiation evaluated using agomir results showed expression mir mir mir itp patients lower controls frequencies treg cells decreased whereas frequencies cells increased significantly itp patients compared controls expression levels mir mir negatively correlated cells respectively expression mir positively correlated frequencies treg cells platelet counts significant correlation found mirnas expression different autoantibody groups regulated mir expression agomir contributed differentiation treg itp patients moreover mir increased presence dex pbmcs itp patients vitro study represents abnormal expression profile immune related mirnas itp patients mir may involved tregs differentiation function
brain derived neurotrophic factor bdnf involved numerous cognitive functions including learning memory bdnf plays important role synaptic plasticity humans rats bdnf shown essential formation long term memories previously identified significant association bdnf valmet polymorphism long term visual memory value small cohort comprised healthy individuals phenotyped various aspects memory function study extended cohort individuals examined multiple genetic variants across bdnf bdnf genes association visual memory performance assessed wechsler memory scale fourth edition subtests visual reproduction assesses immediate visual memory whereas assesses long term visual memory genetic association analyses performed single nucleotide polymorphisms genotyped illumina omniexpress beadchip arrays immediate long term visual memory phenotypes none bdnf bdnf variants shown significant immediate visual memory found variants including valmet polymorphism value nominally associated three variants two variants bdnf one variant bdnf locus significantly associated long term visual memory data therefore suggests potential role bdnf anti sense transcript bdnf long term visual memory performance
brassicaceae widely consumed many parts world dietary intake associated cancer risk reduction extracts metabolites derived cruciferous vegetables thus gained popularity potential cancer chemopreventive agents previously found unexpectly glucoraphanin extensively present glucosinolate vegetables potent mutagen bioactivating phase enzyme inducer present study influence black cabbage seed extract rich glucoraphanin investigated phase enzymes different organs male female rats oral seed extract injection one four consecutive days significantly affected various cytochrome cyp linked monooxygenases complex way lung responsive organ males similar increase cypb isoform similar loss cypa cypa findings indicate extract may strongly enhance suppress rat xenobiotic biotransformation pathways caution paid possible influence human metabolism data suggest overall evaluation balance beneficial possible adverse effects agent even natural origin prior routinely preventive mass use elsevier ltd rights reserved
breast cancer disease unknown etiology however major risk factors genetic alterations studies demonstrated association insulinlike growth factor igf gene polymorphism cell proliferation reduced apoptosis addition role breast cancer growth aggressiveness two polymorphic variants igf gene highlighted association breast cancer although controversy exists relationship current study included women breast cancer cases controls without breast cancer peripheral blood drawn study genomic dna extracted leukocytes using genotyping technique real time polymerase chain reaction genotype present women case group women control group genotype occurred women case group women control group statistically significant difference observed genotype variant premenopausal case control women thus also significant difference case control postmenopausal women concerning genotype occurred premenopausal case control women difference found postmenopausal women current study igf gene polymorphism snp variants statistically significant association breast cancer premenopausal postmenopausal women
brucella species facultative intracellular pathogens infect animals natural hosts transmission humans commonly caused direct contact infected animals ingestion contaminated food lead severe chronic infections brucella invade professional non professional phagocytic cells replicates within endoplasmic reticulum derived vacuoles host factors required brucella entry host cells avoidance lysosomal degradation replication like compartment remain largely unknown describe two assays identify host factors involved brucella entry replication hela cells protocols describe use rna interference alternative screening methods could applied assays based detection fluorescently labeled bacteria fluorescently labeled host cells using automated wide field microscopy fluorescent images analyzed using standardized image analysis pipeline cellprofiler allows single cell based infection scoring endpoint assay intracellular replication measured two days infection allows bacteria traffic replicative niche proliferation initiated around bacterial entry brucella successfully established intracellular niche thus strongly proliferated inside host cells since intracellular bacteria greatly outnumber individual extracellular intracellular non replicative bacteria strain constitutively expressing gfp used strong gfp signal used identify infected cells contrast entry assay essential differentiate intracellular extracellular bacteria strain encoding tetracycline inducible gfp used induction gfp simultaneous inactivation extracellular bacteria gentamicin enables differentiation intracellular extracellular bacteria based gfp signal intracellular bacteria able express gfp allows robust detection single intracellular bacteria intracellular proliferation initiated
calcium major ion human metabolism level highly controlled regulation per formed via calcium sensing receptor discovery ten years ago led explanation number clinical disorders syndromes caused casr abnormalities characterized hypercalcemia hypocalcemia associated inappropriate calciuria underlying genetic auto immune cause may demonstrated high blood calcium levels linked mutations casr gene lead familial hypocalciuric hypercalcemia neonatal non neonatal forms severe hypercalcemic hypocalcemia determined mutations casr gene include autosomal dominant hypocalcemia sporadic form another clinical presentation similar bartter syndrome reported autoantibodies directed casrs seen auto immune diseases lead similar clinical presentations finally casr polymorphisms modulate range blood calcium levels diagnosis diseases deleterious therapeutics avoided discovery receptor led new therapeutic prospects calcimimetics hyperthyroidism
carbon represents fourth abundant chemical element world two stable one radioactive isotope carbon isotopes natural abundance plays important role numerous applications study human metabolism changes molecular structure studies non invasive respiratory tests alzheimer tests air pollution global warming effects plants distributed systems increasingly applied critical real time applications complexity forces programmers use design methods guarantee correctness increase maintainability products objectoriented methodologies widely used cope complexity kind system lack formal foundation allow analysis verification designs one main requirements dealing concurrent reactive systems research intended make analogy two tips industrial processes one isotope separation column one distributed systems try highlight detection mission critical situations two processes show one critical needs deeply supervisyon
cardiac allograft vasculopathy cav transplant pathology limiting graft survival heart transplantation cav arteries surrounded ectopic lymphoid structures els containing cells plasma cells aim study characterize antigenic targets antibodies produced els coronary arteries surrounding epicardial tissue transplant recipients collected autopsy immunofluorescence used identify antibody producing plasma cells immunoglobulin levels tissue lysates measured enzyme linked immunosorbent assay analyzed donor specific hla antibodies luminex assay cytokine receptor expression levels quantified using quantitative polymerase chain reaction plasma cells els polyclonal produced igg igm antibodies epicardial tissue igg igm levels higher transplant patients larger els smaller els patients els donor specific hla type antibodies detected locally cytokine receptor expression cxcr interferon tgf higher large els epicardial tissue vessel wall layers suggesting active recruitment proliferation lymphocytes els exhibited active plasma cells producing locally manufactured antibodies cases directed donor hla potentially mediating rejection major consequences graft ectopic lymphoid structures surrounding coronary arteries allograft vasculopathy contain high levels antibodies directed part toward donor hla class
catalyst free thermal polyesterification recently emerged potential strategy designing biodegradable thermoset polymers particularly polyol based polyesters biomedical applications thermoset polyesters synthesized polycondensation polyol polyacid without presence catalyst solvents mechanical properties degradation rates crystallinity hydrophilicity biocompatibility controlled adjusting monomer feed ratios curing conditions polyesters often degrade via surface erosion allows polymers maintain structural integrity throughout hydrolysis additionally polyol based polyesters demonstrated good biocompatibility non toxic catalysts solvents involved reaction monomers used endogenous human metabolism resorbed metabolized various physiological pathways review summarizes polyol based biodegradable polyesters synthesized catalyst free polyesterification
cdc plays role eukaryotic dna replication member cmg cdc mcm gins complex thought function replicative dna helicase however biochemical properties cdc fully understood systematically examined interactions human cdc mcm gins replication proteins immunoprecipitation found cdc directly interact mcm proteins psf psf sld gins subunits replication protein rpa topoisomerase binding protein results consistent notion cdc plays role progression dna replication forks experiments using antibodies cdc show level cdc recovered triton insoluble chromatin containing fraction peaked middle phase synchronized hela cells however incubation triton insoluble fraction nucleases resulted recovery less half amount cdc nuclease sensitive fraction result contrast rpa proliferating cell nuclear antigen distribution results indicate considerable portion cdc localizes region dna replication forks nuclei localizes replication forks fractionated fork proteins owing tight association presumably nuclear scaffolds
cell cell trafficking different cellular layers key process various rnas including plant viruses viroids regulatory mechanisms involved still fully elucidated good model systems important analyse function simple rna motif termed loop potato spindle tuber viroid pstvd required trafficking nicotiana benthamiana leaves northern blotting reverse transcriptase pcr pcr situ hybridization analyses demonstrated unlike wild type pstvd present nuclei cell types trafficking defective loop mutants visible nuclei upper epidermal palisade mesophyll cells shows pstvd loop plays role mediating rna trafficking palisade spongy mesophyll cells benthamiana leaves findings approaches broad implications studying rna motifs mediating trafficking rnas across specific cellular boundaries biological systems
cellulases hemicellulases trichoderma reesei aspergillus niger shown powerful enzymes biomass conversion sugars production costs still relatively high commercial application choice effective microbial cultivation process employed enzyme production important since may affect titers profile protein secretion used proteomic analysis characterize secretome reesei niger cultivated submerged sequential fermentation processes information gained key understand differences hydrolysis steam exploded sugarcane bagasse enzyme cocktails obtained two different cultivation processes sequential process cultivating niger gave xylanase beta glucosidase activities fold higher respectively corresponding activities submerged process greater protein diversity critical cellulolytic hemicellulolytic enzymes also observed secretome analyses results helped explain fold higher yield hydrolysis non washed pretreated bagasse combined reesei niger enzyme extracts sequential fermentation used place enzymes obtained submerged fermentation enzyme loading fpu cellulase activity glucan surprisingly effective compared times enzyme loadings commonly reported cellulose hydrolysis studies analyses showed consisted proteins cellulases whose role important hydrolysis lignocellulose substrate work combined proteomic analyses enzymology studies show sequential submerged cultivation methods differently influence titers secretion profile key enzymes required hydrolysis sugarcane bagasse higher diversity feruloyl esterases xylanases auxiliary hemicellulolytic enzymes observed enzyme mixtures sequential fermentation could one major reason efficient enzyme hydrolysis results using combined secretomes niger reesei elsevier inc rights reserved
chalcone isomerase chi one essential enzymes anthocyanin biosynthetic pathway catalyzing stereospecific isomerization chalcones corresponding flavanones full length cdna chi length isolated purple fleshed sweet potato ipomoea batatas lam yamakawamurasaki designated ibchi containing open reading frame encoding amino acid polypeptide sequence alignment showed coding region ibchi gene highly homologous chis plant species four conserved amino acid residues thr tyr asn ser essential chi active sites phylogenetic analysis revealed ibchi clustered type chi group southern blotting showed multicopies ibchi gene batatas genome ibchi gene showed significant restriction fragment length polymorphism among different batatas cultivars overexpression ibchi gene arabidopsis mutant fully complemented pigmentation phenotype seed coat cotyledon hypocotyl indicating ibchi gene encoded fully functional chi protein anthocyanin proanthocyanidin biosynthesis expression patterns ibchi anthocyanin biosynthesis related genes ibchs ibfh ibdfr ibans matched accumulation patterns anthocyanin thick roots mature storage roots different cultivars sweet potato however fibrous roots ibchi expressed obviously higher purple fleshed cultivar white fleshed cultivar ibchs ibdfr exhibited opposite expression trends ibfh ibans expressed almost equally purple white fleshed cultivars findings suggest ibchi key enzyme anthocyanin biosynthetic pathway sweet potato responsible activation anthocyanin biosynthesis early stage root development
changes colonic microbiota critical pathogenesis diverticular complications diverticulitis peridiverticular abscesses however subtle changes microbiota composition may well important chronic manifestations diverticulosis studies shown presence bacterial overgrowth subgroups patients diverticular disease recent studies using molecular biology techniques found increase proteobacteria actinobacteria patients symptomatic uncomplicated diverticular disease sudd compared healthy controls use probiotics modulate intestinal microecology sudd appears therefore rational although several investigations evaluating clinical efficacy probiotics performed definitive results yet achieved mainly due heterogeneity available studies studies used probiotics combination poorly absorbed antimicrobials anti inflammatory drugs studies harm using probiotics alone placebo controlled double blind trial analysis available evidence reveals poor quality published studies whose design heterogeneous trials double blind randomized therefore available data suggest benefit probiotics sudd allow evidence based definite conclusion consequence current guidelines state insufficient evidence recommend probiotics symptom relief patients diverticular disease
chemical reactions named honor true least perceived discoverers known name reactions review collection biological representatives named chemical reactions emphasis placed reaction types catalytic mechanisms showcase chemical diversity natural product biosynthesis well parallels synthetic organic chemistry attempt made whenever possible describe enzymatic mechanisms catalysis within context synthetic counterparts discuss mechanistic hypotheses reactions currently active areas investigation review categorized reaction type example condensation nucleophilic addition reduction oxidation substitution carboxylation radical mediated rearrangements subdivided name reactions
childhood obesity increasing problem western world affected multitude interacting factors recent evidence suggests taste perception may differ obese normal weight children evidence also suggests perception sweet bitter taste linked differential food liking various foods date studies focused single food items food groups rather overall view dietary quality mainly bitterness thus unclear whether taste perception associated dietary quality children objective examine link taste perception dietary quality body weight irish school children conjunction known influences body weight taste perception measured using glms bitter salty sweet stimuli detailed dietary intake data collected children aged via day diet history energy misreporters identified excluded dietary analyses leaving children dietary quality assessed using healthy eating index salivary dna collected analyzed variations bitter receptor gene tasr sex differences observed whereby intensity perception sweetness lower overweight obese males association observed sweet taste females despite differences weight status taste perception associated differences overall dietary quality measured via hei score cohort prospective cohort studies children necessary better understand association taste intensity food intake weight time elsevier ltd rights reserved
chlorite serious environmental concern rising concentrations harmful anthropogenic compound detected groundwater drinking water soil chlorite dismutases clds therefore important molecules bioremediation clds catalyze degradation chlorite chloride molecular oxygen clds heme containing oxidoreductases present numerous bacterial archaeal phyla review presents phylogeny functional clds cld like proteins demonstrates close relationship novel enzyme family recently discovered dye decolorizing peroxidases available ray structures biophysical enzymatic properties well proposed reaction mechanism presented critically discussed open questions structure function relationships addressed including nature catalytically relevant redox reaction intermediates mechanism inactivation clds turnover based analysis currently available data chlorite dismutase candidatus nitrospira defluvii suggested model cld future application biotechnology bioremediation additionally clds used various applications local generators molecular oxygen reactivity already exploited microbes must perform aerobic metabolic pathways absence molecular oxygen biotechnologists field chemical engineering bioremediation review provides biochemical biophysical background cld enzyme family well critically assesses cld technological potential
chronic exposure arsenic affects million people worldwide associated many adverse health effects including cancer several organs accumulating evidence arsenic biotransformation step elimination arsenic human body induce changes genetic epigenetic level leading carcinogenesis genetic level arsenic interferes key cellular processes dna damage repair chromosomal structure leading genomic instability epigenetic level arsenic places high demand cellular methyl pool leading global hypomethylation hypermethylation specific gene promoters arsenic associated dna alterations result deregulation oncogenic tumour suppressive genes furthermore recent reports implicated aberrant expression non coding rnas consequential disruption signaling pathways context arsenic induced carcinogenesis article provides overview oncogenomic anomalies associated arsenic exposure conveys importance non coding rnas arsenic induced carcinogenic process
chronic granulomatous disease cgd disease characterized inadequate neutrophil killing microbial pathogens affects per million live births many decades following description cgd fatal disease childhood development effective preventive therapies early recognition infectious complications children cgd survive adulthood management cgd adults includes unique challenges potential disease manifestations article authors discuss current approach management cgd children adults includes focus importance comprehensive multidisciplinary approach care cgd potential complications addition novel approach improving education cgd subsequently improving adherence preventive therapies discussed american academy allergy asthma immunology
chronic hepatitis virus hbv hepatitis virus hdv infections major causes liver disease hepatocellular carcinoma worldwide despite presence efficient preventive vaccine million patients chronically infected hbv current antivirals effectively control rarely cure chronic infection molecular biology two viruses characterized great detail absence robust cell culture models hbv hdv infection limited investigation virus host interactions native hepatoma cell lines allow viral infection culture primary hepatocytes natural host cell viruses implies series constraints restricting possibilities analyzing virus host interactions recently discovery sodium taurocholate transporting polypeptide ntcp key hbv hdv cell entry factor opened door new era investigation ntcp overexpressing hepatoma cells acquire susceptibility hbv hdv infections review summarize major cell culture models hbv hdv infection discuss advantages limitations highlight perspectives future developments
chronic myeloid leukemia cml hematological cancer characterized reciprocal chromosomal translocation chromosomes producing bcr abl oncogene tyrosine kinase inhibitors tkis represent standard care cml patients exert dual mode action direct oncokinase inhibition restoration effector mediated immune surveillance rendered dysfunctional cml patients diagnosis prior tki therapy tkis imatinib potent second generation nilotinib dasatinib induce high rate deep molecular response dmr bcr abl cml patients result recent goal therapy cml treatment induce durable dmr prelude successful treatment free remission tfr occurs approximately half cml patients cease tki therapy lack overt relapse patients attributed immunological control cml review discuss immunological timeline successful tfr focusing immunology cml tki treatment initial period immune suppression limiting antitumor immune effector responses newly diagnosed cml patients linked expansion immature myeloid derived suppressor cells regulatory cells aberrant expression immune checkpoint signaling pathways including programmed death programmed death ligand commencement tki treatment associated immune system activation restoration effector mediated natural killer cell cell immune surveillance cml patients albeit differing frequencies concert differing levels molecular response achieved tki dmr associated maximal restoration immune recovery cml patients tki current data suggest net balance effector suppressor arms immune system minimum involving mature cytotoxic cdd cells may important mediating tfr success however major goal remains cml identify effective pathways target maximize advantageous immune response promote tfr success
chronic neuroinflammation thought potentiate medial temporal lobe mtl atrophy memory decline alzheimer disease become increasingly important find novel immunological biomarkers neuroinflammation processes track development progression study explored pro anti inflammatory cerebrospinal fluid csf biomarkers best predicted neuropathology months using alzheimer disease neuroimaging initiative data csf inflammatory biomarkers mass spectrometry multiplex panels screened using step wise regression followed model retests validation neuronal pentraxin nptx chitinase like protein clp biomarkers glutamatergic synaptic plasticity microglial activation respectively consistently significant biomarkers selected biomarlcers selected linear mixed models used analyze baseline longitudinal associations bilateral mtl volume memory decline global cognition established biomarkers including csf amyloid tau higher baseline nptx levels corresponded less mtl atrophy substantially less memory decline month conversely higher clp modestly predicted mtl atrophy yet significantly track memory decline time conclusion nptx novel pro inflammatory cytokine predicts related outcomes better immunological biomarker date substantially accounting brain atrophy especially memory decline clp microglial biomarker contrast performed modestly predict longitudinal memory decline research may advance current understanding etiopathogenesis expanding early diagnostic techniques use novel pro inflammatory biomarkers nptx future studies also see nptx causally affects mtl morphometry memory performance elsevier inc rights reserved
cigarette smoke considered major contributor pathogenesis chronic obstructive pulmonary disease copd copd patients airway smooth muscle layer observed markedly thickened proliferation airway smooth muscle cells asmcs therefore used present study model assess impact cigarette smoke extract cse asmcs exposed various concentrations cse proliferation cells analyzed mtt assay furthermore expression levels calreticulin ccaat enhancer binding protein alpha ebp cse stimulated asmcs determined polymerase chain reaction western blot analyses addition effects rna interference rnai knockdown calreticulin ebp asmc proliferation studied cse found promote proliferation asmcs associated increased expression calreticulin decreased expression ebp knockdown calreticulin resulted upregulation ebp inhibition cell proliferation simultaneous knockdown ebp promoted cell proliferation present study revealed cse promoted proliferation asmcs mediated inhibition ebp findings shed new light airway remodeling copd may provide novel approaches therapies
citric acid represents class carboxylic acids present biological fluids playing key roles biochemical processes bacteria humans ability promote diverse coordination chemistries aqueous media presence metal ions known act trace elements human metabolism earmarks involvement number physiological functions cobalt known central element metabolically important biomolecules therefore biospeciation biological fluids constitutes theme worthy chemical biological perusal effort unravel aqueous chemistry cobalt presence physiologically relevant ligand citrate first aqueous soluble mononuclear complex synthesized isolated reaction mixtures containing citrate molar ratio similar crystalline compound cho characterized spectroscopically vis epr crystallographically ray structure consists distorted octahedral anion two citrate ligands fulfilling coordination requirements ion magnetic susceptibility measurements range consistent high spin complex containing ground state corroborating result epr spectrum shows signal consistent presence system spectroscopic structural properties complex signify potential biological relevance participation speciation patterns arising conditions consistent employed synthesis isolation
kit tyrosine kinase receptor important gametogenesis hematopoiesis melanogenesis mast cell biology dysregulation kit function oncogenic expression stem cell niche number tissues underlined relevance regenerative medicine hematopoietic stem cell biology yet little known mechanisms control kit protein levels show ranbpm ranbp scaffold protein binds kit necessary normal kit protein expression mouse testis subset lineages hematopoietic system ranbpm deletion causes reduction kit protein mrna suggesting posttranslational mechanism regulation specific kit receptor since ranbpm reduction affect membrane proteins examined importantly mouse hematopoietic system testis ranbpm deficiency causes defects consistent kit loss expression suggesting ranbpm important regulator kit function finding regulatory mechanism also present human cells expressing endogenous ranbpm kit suggests potential new strategy target oncogenic kit malignancies
climate models predict increased frequency intensity storm events unclear extreme precipitation events influence dynamics soil fluxes multiple greenhouse gases ghgs intact soil mesocosms depth temperate forested watershed piedmont region maryland two upland forest soils two hydric soils wetland creek bank exposed experimental water pulses periods drying forcing soils towards extreme wet conditions controlled temperature automated measurements hourly resolution soil fluxes coupled porewater chemistry analyses polymerase chain reaction denaturing gradient gel electrophoresis characterize changes microbial community structure automated measurements quantified unexpected increases emissions wetland creek forest soils following pulse events creek soil produced highest soil emissions wetland soil produced highest emissions forest soils produced highest emissions experiment using carbon dioxide equivalencies three ghgs determined creek soil contributed year global warming potential gwp forest soils contributed year gwp result large emissions results provide insights influence extreme wet conditions porewater chemistry factors controlling soil ghgs fluxes finally study addresses need test biogeochemical thresholds responses ecosystem functions climate extremes
clonal channel catfish lymphoid cell lines mixed lymphocyte cultures mlcs proven extremely useful examining immune responses cellular molecular levels date clonal catfish cell lines mlcs biologically phenotypically characterized using variety techniques including reverse transcription polymerase chain reaction pcr well northern southern blotting expand molecular characterization cultures microarray analysis employed clonal macrophage cytotoxic cell lines mlcs examined using cdna array containing similar probes derived est libraries prepared macrophage cell line mlc day old catfish fry analysis showed cell line displayed unique rna expression profile included variety immune related genes pearson correlation analysis indicated one cytotoxic cell line clustered mlc whereas second cytotoxic cell line closely associated second cluster containing cells macrophages study illustrates utility microarray analyses profiling rna expression patterns catfish lymphoid cell lines serve platform examining catfish immune responses following virus infection poly treatment elsevier ltd rights reserved
myc overexpression implicated several malignancies including gastric cancer report acidified bile acids enhance tumor progression telomerase activity gastric cancer via myc activation vivo vitro myc mrna protein levels assessed ten primary five local recurrent gastric cancer samples quantitative real time polymerase chain reaction western blotting analysis gastric cancer cell line mgc exposed bile salts mol glycochenodeoxycholic acid deoxycholic acid anacidmedium min daily weeks develop mgc resistant cell line control mgc cells grown without acids bile salts weeks control cell morphology proliferation colony formation apoptosis mgc resistant cells analyzed weeks determine involvement myc tumor progression telomere aging mgc resistant cells generated xenografts nude mice measured xenograft volume vivo telomerase activity myc htert protein mrna levels significantly higher local recurrent gastric cancer samples primary gastric cancer samples mgc resistant cells showed marked phenotypic change normal growth conditions clusters acini exhibited increased cell viability colony formation decreased apoptosis vitro phenotypic changes found dependent myc activation using myc inhibitor mgc resistant cells also showed myc dependent increase xenograft growth telomerase activity vivo conclusion observations support hypothesis acidified bile acids enhance tumor progression telomerase activity gastric cancer effects dependent myc activity findings suggest acidified bile acids play important role malignant progression local recurrent gastric cancer
cofactor free oxidases oxygenases promote control reactivity limited chemical tools disposal mechanism action completely understood structural information available reaction intermediates near atomic resolution crystallography supported incrystallo raman spectroscopy calculations showed unambiguously archetypical cofactor free uricase catalyzes uric acid degradation via hydro peroxide intermediate low ray doses break specifically intermediate coo bond thus releasing insitu trapped substrate radical dose dependent rate bond rupture followed combined crystallographic raman analysis indicates ionizing radiation kick starts peroxide decomposition regeneration peroxidation explained mechanism substrate radical recombines superoxide transiently produced active site
infection none coding satellite rnas sat rnas usually inhibits replication attenuates disease symptoms helper viruses however find sat rna beet black scorch virus bbsv low temperature degrees additively enhance systemic infection bbsv nicotiana benthamiana northern blotting hybridization revealed relatively reduced accumulation bbsv derived small interfering rnas sirnas presence sat rna compared bbsv alone cloning sequencing total small rnas showed total small rnas sequenced bbsv infected plants bbsv sirnas whereas abundance sat sirnas higher bbsv sirnas sat rna infected plants indicating sat rna occupies silencing components possibly relieves rna silencing mediated defense bbsv interestingly termini sirnas derived bbsv sat rna dominated uridines adenines respectively besides infection bbsv alone sat rna induce regulation mir mir respectively leads high accumulation targets argonaute ago ago work reveals profiles sirnas bbsv sat rna provides additional clue investigate complicated interaction helper virus sat rna
contemporary molecular biology research tools enriched numerous areas biomedical research address challenging diseases including endocrine cancers pituitary thyroid parathyroid adrenal testicular ovarian neuroendocrine cancers tools placed several intriguing clues scientific community endocrine cancers pose major challenge health care research despite considerable attempts researchers understand etiology microarray analyses provided gene signatures many cells tissues organs differentiate healthy states diseased ones even show patterns correlate stages disease microarray data also elucidate responses endocrine tumors therapeutic treatments rapid progress next generation sequencing methods overcome many initial challenges technologies advantages microarray techniques enabled emerge valuable aids clinical research applications prognosis identification drug targets etc comprehensive review describing recent advances next generation sequencing methods application evaluation endocrine endocrine related cancers lacking main purpose review illustrate concepts collectively constitute current view possibilities offered next generation sequencing technological platforms challenges relevant applications perspectives future clinical genetic testing patients endocrine tumors focus recent discoveries use next generation sequencing methods clinical diagnosis endocrine tumors patients conclude discussion persisting challenges future objectives
context asakura sanshoo zanthoxylum piperitum inerme makino important medicinal plant east asia transgenic technique could applied improve plant traits analyze gene function however report regeneration genetic transformation asakura sanshoo aims establish regeneration agrobacterium tumefaciens mediated genetic transformation system asakura sanshoo could used cultivar improvement gene function analysis settings design various combinations indole butyric acid iba benzylaminopurine naphthalene acetic acid naa explored optimal plant regeneration petiole stem asakura sanshoo half strength woody plant medium wpm different concentrations naa iba used induce root genetic transformation tumefaciens strain eha harboring plasmid pbin ipt carries isopentenyl transferase ipt gene glucuronidase gus gene kanamycin resistance gene neomycin phosphotransferase nptii used transformation efficiency detected kanamycin resistant frequency materials methods petioles stems obtained vitro cultured asakura sanshoo petiole stem segments precultured days inflected using bacterium concentration min followed days cultivation selection transgenic plants carried days regeneration using gradient kanamycin respectively successful transformed plants confirmed gus histochemical assays polymerase chain reaction pcr reverse transcription pcr pcr southern blotting analysis results highest shoots regeneration obtained wpm supplement naa optimal rooting medium half strength macro element wpm kanamycin resistant frequency petiole stem respectively thirty five shoots thousands adventitious buds confirmed gus histochemical assays pcr pcr southern blotting regeneration shoot per explants elevated fold compared wild type plants conclusions individual transgenic asakura sanshoo lines obtained paper first revealed expression ipt gene significantly promoted adventitious buds induction asakura sanshoo action plants
cornhusk corncob stigma maydis extracted water aqueous ethanol aqueous methanol ethyl acetate respectively total phenolic contents tpc total flavonoid contents tfc total ketosteroid contents tkc antioxidant activities azinobis ethylbenzothiazoline sulfonic acid abts diphenyl picrylhydrazyl dpph tri pyridyl triazine tptz radical scavenging activity reducing power ferric reducing antioxidant power frap extracts investigated main antioxidant components determined quantified high performance liquid chromatography hplc results revealed aqueous ethanol aqueous methanol efficient extracting antioxidant constituents cornhusk corncob stigma maydis eight main antioxidant components detected three products contents four main antioxidant components determined present work revealed cornhusk corncob showed similar high tpc tfc tkc antioxidant activities stigma maydis could used potential candidates prevention diseases related various oxidant products human metabolism
corticosteroids important part pharmacological armamentarium wide spectrum diseases powerful drugs effect aspects human metabolism although often life saving plethora important side effects narrow therapeutic window side effects aria well known physicians would like highlight problem avascular necrosis associated cyclical steroid therapy short duration using moderate doses unusual indication
csda cysteine desulfurase sulfur donor csde sulfur acceptor involved biological sulfur trafficking iron sulfur cluster assembly model bacterium escherichia coli csda csde form stable complex polar interface includes csda cys csde cys two residues known involved sulfur transfer reaction although mechanisms transfer sulfur moiety across protein protein interfaces proposed based iscs iscu iscs tusa structures flexibility catalytic cysteine loops involved precluded high resolution view active site geometry chemical environment sulfur transfer used combination ray crystallography solution nmr saxs isothermal calorimetry computational chemistry methods unravel csda provides specific recognition platform csde complex organizes composite functional reaction environment ray structures persulfurated csda persulfurated csda csde complexes reveal crucial roles conserved active site cysteine loop additional catalytic residues supporting transpersulfuration reaction mechanistic view sulfur transfer across protein protein interfaces underpins requirement conserved cysteine loop provide electrostatic stabilization transfer sulfur atom emerges analysis persulfurated csda csde complex structure
cucurbit viruses associated important economic losses xinjiang china therefore comprehensive survey sample collection performed growing seasons major melon growing locations xinjiang largest area melon production china samples analyzed using reverse transcription polymerase chain reaction pcr detect watermelon mosaic virus wmv zucchini yellow mosaic virus zymv cucumber mosaic virus cmv papaya ringspot virus prsv squash mosaic virus sqmv tomato ringspot virus torsv moroccan watermelon mosaic virus mwmv tomato spotted wilt virus tswv watermelon silver mottle virus wsmov cucumber green mottle mosaic virus cgmmv zucchini yellow fleck virus zyfv collected melon samples virus like symptoms samples infected least one viruses wmv prevalent virus detected wmv cmv zymv detected infected samples respectively infection rate three viruses changed significantly among melon cultivars viruses analysed detected sample tested number multiple infections high average common double infection wmv cmv closely followed wmv zymv statistical analysis potential association among viruses showed strong association several viruses multiple infections analysis wmv genetic diversity suggested isolates obtained study clustered group purifying selection restricting variability population
currently million americans suffer numbers expected increase million despite tremendous research efforts still drugs agents delay prevent progression still early detectable biomarkers multiple cellular changes implicated including synaptic damage mitochondrial damage production accumulation beta phosphorylated tau inflammatory response deficits neurotransmitters deregulation cell cycle hormonal imbalance research revealed mirnas involved cellular changes interfere gene regulation translation recent discoveries molecular biology also revealed micrornas play major role post translational regulation gene expression purpose article review research assessed neuroprotective neurodegenerative characteristics micrornas brain samples transgenic mouse models patients elsevier inc rights reserved
currently many brazilian orchids threatened extinction resulting habitat loss intense harvesting pressure stemming value ornamental plants therefore genetic diversity remaining populations fundamental survival species natural environments order inform conservation strategies study evaluated genetic diversity structure cattleya granulosa populations sample consisted individuals populations atlantic forest northeastern brazil evaluated using issr markers genetic variability assessed molecular variance diversity indexes clusters genotypes bayesian analysis tests genetic bottlenecks polymorphic loci genetic diversity varied shannon index ranged significant genetic differentiation populations broken vertical bar resulted division populations five groups based log likelihood bayesian analysis found significant positive correlation geographical genetic distances populations indicating isolation distance patterns allelic diversity within populations suggest occurrence bottlenecks granulosa populations therefore order maintain genetic diversity species conservation spatially distant groups necessary
cytogenetic molecular investigations holocentric chromosomes aphid macrosiphum euphorbiae thomas carried using silver staining banding followed chromomycin dapi staining order improve knowledge structure aphid chromosomes banding pattern peculiar since two chromosomes single pair autosomes presented heterochromatic bands silver staining fish rdna probe localized rdna genes one telomere chromosome also brightly fluorescent chromomycin staining banded chromosomes whereas heterochromatic bands dapi positive interestingly remarkable nucleolar organizing region heteromorphism present making two chromosomes easily distinguishable southern blotting fish assessed presence ttagg repeat ends euphorbiae chromosomes karyotype analysis showed males possessed chromosome larger amount rdna suggesting non mendelian inheritance two chromosomes
cytotoxic lymphocytes execute killing insulin producing beta cells onset type diabetes mellitus research community come far dissecting major events development disease still trigger high resolved information immunological events leading beta cell loss missing past decades intravital imaging immune responses led significant scientific breakthroughs diverse models disease including dynamic imaging immune cells pancreatic islets onset made possible development advanced microscopes animal models allow long term immobilization pancreas use modalities revealed milling microenvironment pancreatic islets disease onset plethora active players clues answering remaining questions disease may lie intravital imaging including key immune cells traffic pancreas cells interact target tissue review highlights discusses recent studies models techniques focused understand immune responses onset intravital imaging
deciphering invasion routes molecular data crucial understanding biological invasions including identifying bottlenecks population size admixture among distinct populations unravel invasion routes invasive pest drosophila suzukii using multi locus microsatellite dataset loci worldwide sampling locations use approximate bayesian computation abc improved reconstruction invasion routes computationally expensive use study illustrate use new efficient abc method abc random forest abc compare standard abc method abc lda find japan emerges probable source earliest recorded invasion hawaii southeast china hawaii together probable sources populations western north america turn served sources eastern north america european populations genetically homogeneous north american populations probable source northeast china evidence limited gene flow eastern well introduced populations passed bottlenecks analyses reveal five distinct admixture events findings inform hypotheses concerning species evolved different independent source invasive populations methodological comparisons indicate abc abc lda show concordant results abc lda based large number simulated datasets abc performs abc lda using comparable manageable number simulated datasets especially analyzing complex introduction scenarios
defects peroxisomes associated zellweger syndrome influence diverse intracellular metabolic pathways including mitochondrial functioning report month old female infant month old female infant typical clinical radiological laboratory features zellweger syndrome light microscopic ultrastructural evidence mitochondrial pathology muscle biopsies homozygous pathogenic mutations pex gene pex gene del leuthrfs respectively additionally mitochondrial respiratory chain enzymology analysis first girl showed mildly low activity complexes iii also review five children previously reported literature presumptive diagnosis additional mitochondrial findings muscle biopsies conclusion first study patients molecularly confirmed peroxisomal disorder features concomitant mitochondrial myopathy underscores role secondary mitochondrial dysfunction zellweger syndrome potentially contributing clinical phenotype
despite advances molecular biology imaging treatment gastric neoplasms remain significant cause morbidity mortality gastric adenocarcinoma fifth common malignancy third common cause death worldwide brenner methods mol biol howson epidemiol rev roder gastric cancer suppl ferlay globocan cancer incidence mortality worldwide iarc cancerbase internet international agency research cancer frequency malignant gastric tumors occur well worldwide impact gastric neoplasms remain important lesions identify characterize imaging modalities despite varied histologies behaviors neoplasms many similar imaging features nonetheless treatment management prognosis gastric neoplasms vary pathology essential radiologist make every effort differentiate lesions raise less common entities differential diagnostic considerations appropriate
despite better understanding molecular biology non small cell lung cancer nsclc remains challenging disease treat unfortunately treatment options still limited prognosis advanced disease poor immune surveillance plays crucial role host defence tumour cells particular relevant lung cancer due high somatic mutational load increases chances immune system recognize cancer cells non self novel immunotherapies emerging effective treatment disease review present data immune checkpoint inhibitors nsclc describing mechanism action data efficacy recent clinical trials strategies select patients likely benefit agents
despite overall reductions heart disease prevalence risk developing heart failure remained fold greater among people diabetes growing evidence supported fluctuations glucose level uptake contribute cardiovascular disease cvd modifying proteins dna gene expression case glucose clinical studies shown increased dietary sugars healthy individuals poor glycemic control diabetic patients increased cvd risk furthermore even decades maintaining tight glycemic control susceptibility disease progression persist following period poor glycemic control process termed glycemic memory response chronically elevated glucose levels number studies identified molecular targets glucose mediated protein posttranslational modification addition linked acetylglucosamine impair contractility calcium sensitivity mitochondrial protein function additionally elevated glucose contributes dysfunction coupling glycolysis glucose oxidation pentose phosphate pathway polyol pathway therefore sweetened environment associated hyperglycemia number pathways contributing increased susceptibly breaking heart diabetics review discuss unique contribution glucose heart disease recent advances defining mechanisms action
despite considerable progress chronic lymphocytic leukaemia cll therapy relapse progression richter syndrome still appears thus targeted therapeutic option required achieved increasing concentration cytostatic drug tumour reducing systemic toxicity continuous effort toward development efficient therapeutics current study report rituximab conjugated gold nanoparticles cll treatment formation rituximab nanoconjugates proved physico chemical characterization vis spectroscopy zeta potential dynamic light scattering intracellular internalization assessed dark field transmission electron microscopy therapeutic effect newly designed drugs investigated cell counting mit assays results showed effect drug nanocarrier superior compared drug alone data confirmed state art analyses internalization cell biology flow cytometry apoptosis autophagy assay genomics pcr msa proteomics confocal microscopy western blotting present work demonstrates rituximab nanoconjugates get efficient trans membrane delivery inside cll cells validated real potential therapeutics increased efficacy compared drug alone
despite immense public health successes immunization past century effective vaccines still lacking globally important pathogens human immunodeficiency virus malaria tuberculosis exciting recent advances immunology biotechnology past decades facilitated shift empirical rational vaccine design opening possibilities improved vaccines important advancements include purification subunit antigens high safety profiles identification innate pattern recognition receptors prrs cognate agonists responsible inducing immune responses iii developments nano microparticle fabrication characterization techniques advances particle engineering allow highly tunable physicochemical properties particle based vaccines including composition size shape surface characteristics degradability enhanced collaborative efforts researchers immunology materials science expected rise next generation vaccines process significantly aided greater understanding immunological principles guiding vaccine antigenicity immunogenicity efficacy specific emphasis prr targeted adjuvants particle physicochemical properties review aims provide overview current literature guide focus rational particle based vaccine design efforts
development rapidly growing urban areas influence local climate micro climate change may affect surrounding environment including schools however study comfort teaching learning environment limited especially schools thermal comfort defined condition mind expresses satisfaction thermal environment iso standard thermal comfort affected heat convection heat radiation absorption heat loss evaporative heat loss retained heat produced human metabolism removed maintain thermal equilibrium environment gains losses outside range heat cause discomfort many studies conducted shows thermal comfort influence occupants several studies shown lately international comfort standards buildings related predictions models report warmer sensation occupants report case naturally ventilated buildings warm climates paper exposes aspects debate field thermal comfort naturally ventilated buildings located warm humid climates paper reports findings preliminary survey conducted identify investigate students perceptions towards classroom thermal comfort schools surrounding using teaching learning classroom thermal comfort inventory tltci instrument results show surveyed students high level awareness regarding climate change also find teaching learning classroom thermal comfort comfortable level published elsevier ltd selection peer review responsibility prof huseyin uzunboylu
development rapid accurate quantification method detection micrornas mirnas desired particular differently expressed normal pathological conditions however various methods quantification small non coding rnas well mirnas described methods mainly include hybridization based approaches primer extension northern blotting microarray profiling reverse transcription pcr developed simple rapid method based stem loop primer based real time pcr assay sensitive accurate detection mature mirnas initially mirna specific stem loop primer used followed taqman real time pcr assay using specific forward primer combination universal reverse primer taqman probe assay shown high sensitivity parts per thousand currency sign copies reaction mirna detection two breast cancer cell lines mcf mda assay might implicated rapid cost effective method detection small non coding rnas
ethylhexyl phthalate dehp reproductive toxicant male rodents aim current study extrapolate pharmacokinetics toxicokinetics mono ethylhexyl phthalate mehp primary metabolite dehp humans using data oral administration dehp chimeric mice transplanted human hepatocytes mehp glucuronide detected plasma control mice chimeric mice single oral doses dehp body weight biphasic plasma concentration time curves mehp glucuronide seen control mice mehp glucuronide extensively excreted urine within mice humanized liver contrast fecal excretion levels mehp glucuronide high control mice compared humanized liver adjusted animal biomonitoring equivalents chimeric mice studies scaled human biomonitoring equivalents using known species allometric scaling factors vitro metabolic clearance data simple physiologically based pharmacokinetic pbpk model estimated urine mehp concentrations humans consistent reported concentrations research illustrates chimeric mice transplanted human hepatocytes combination simple pbpk model assist evaluations pharmacokinetics toxicokinetics primary secondary metabolites dehp elsevier rights reserved
diaz encarnacion warner cheng gray nath grande fatty acids block tnf alpha stimulated mcp expression rat mesangial cells physiol renal physiol first published march doi ajprenal monocyte chemoattractant protein mcp cytokine fundamentally contributes pathogenesis inflammatory renal disease mcp highly expressed cytokine stimulated mesangial cells vitro following glomerular injury vivo interventions limit mcp expression commonly effective assorted experimental models fish oil abundant source fatty acids anti inflammatory properties basis remains incompletely defined examined potential mechanisms whereby fish oil reduces mcp expression thereby suppresses inflammatory responses tissue injury cultured mesangial cells treated tnf alpha presence fatty acids docosahexaenoic acid dha eicosapentaenoic acid epa equimolar concentrations fatty acids served controls mcp mrna expression assessed northern blotting transcriptional activity mcp promoter assessed transient transfection involvement erk kappa pathways evaluated transfection analysis use mek inhibitor dha epa decreased tnf alpha stimulated mcp mrna expression decreasing transcription mcp gene dha epa decreased erk expression nuclear translocation kappa necessary tnf alpha stimulated mcp expression kappa sites involved transcriptional regulation mcp gene dha epa conclude dha epa inhibit tnf alpha stimulated transcription mcp gene interaction signaling pathways involving erk kappa speculate effects may contribute salutary effect fish oil renal vascular disease
differences healthy subjects associated disease risks substantial interest clinical medicine based clinical presentations traditional chinese medicine tcm classifies healthy people nine constitutions balanced yang yin deficiency phlegm dampness damp heat blood stasis stagnation inherited special constitutions particular yang yin deficiency constitutions exhibit cold heat aversion respectively however intrinsic molecular characteristics unbalanced phenotypes remain unclear determine whether gene expression based clustering recapitulate tcm based classification peripheral blood mononuclear cells pbmcs collected chinese han individuals yang yin deficiency balanced constitutions global gene expression profiles determined using affymetrix plus array notably found gene expression based classifications reflected distinct tcm based subtypes consistent clinical observation subjects yang deficiency tend toward obesity series clustering analysis detected several key lipid metabolic genes diacylglycerol acyltransferase dgat acyl coa synthetase acsl atp binding cassette subfamily member abca regulated yin yang deficiency constitutions respectively findings suggest yin yang deficiency balanced constitutions unique entities mrna expression profiles moreover distinct physical clinical characteristics unbalanced constitution explained part specific gene expression signatures copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
differential display experiments performed drought tolerant rice oryza sativa genotype identify upregulated regulated partial cdnas respect moisture stress dna polymorphism detected drought stressed control leaf tissues gels partial cdna showing differential expression respect moisture stress isolated gel northern blotting analysis performed using cdna probe observed mrna corresponding transcript accumulated high level rice leaves water deficit stress dna sequence level partial cdna showed homology psb gene encoding protein
dimethylsulfoniopropionate dmsp ubiquitous algal metabolite common carbon sulfur source marine bacteria dmsp precursor climatically active gas dimethylsulfide readily oxidized sulfate sulfur dioxide methanesulfonic acid products act cloud condensation nuclei although environmental importance dmsp metabolism known time enzyme responsible dmsp demethylation marine bacterioplankton dimethylsufoniopropionate dependent demethylase dmda recently identified biochemically characterized work report structure apoenzyme dmda pelagibacter ubique angstrom well dmda crystals soaked substrate dmsp angstrom cofactor tetrahydrofolate thf angstrom surprisingly overall fold dmda similar enzymes typically utilize reduced form thf fact triple domain structure similar observed glycine cleavage protein sarcosine oxidase specifically thf binding fold appears conserved previous biochemical studies shown enzymes similar fold produce methylene thf dmda catalyzes redox neutral methyl transfer reaction produce methyl thf basis findings presented herein available biochemical data outline mechanism redox neutral methyl transfer reaction novel conserved thf binding domain
dinoflagellates algae tremendous importance ecosystems public health cell biology genome organization dinoflagellate species highly unusual example plastid genomes peridinin containing dinoflagellates encode minimal number genes arranged small elements termed minicircles previous studies peridinin plastid genes found evidence divergent sequence evolution including extensive substitutions novel insertions deletions use alternative translation initiation codons understanding extent divergent evolution hampered lack characterized peridinin plastid sequences identified previously unannotated peridinin plastid mrnas published transcriptome projects vastly increasing number sequences available using data produced well resolved phylogeny peridinin plastid lineages uncovers several novel relationships within dinoflagellates enables define changes plastid sequences occurred early dinoflagellate evolution contributed subsequent diversification individual dinoflagellate clades find origin peridinin dinoflagellates specifically accompanied elevations overall number substitutions occurred plastid sequences ratio associated plastid sequences consistent changes selective pressure substitutions alongside changes accumulated progressively individual peridinin plastid lineages throughout entire dataset identify persistent bias toward non synonymous substitutions occurring sequences encoding photosystem subunits stromal regions peridinin plastid proteins may underpinned evolution unusual organelle
dissecting cellular signaling governs motility eukaryotic cells one fundamental tasks modern cell biology large number physiological processes cell migration crucial even pathological ones particular tumor invasion metastasis cell migration requires coordination least four major processes polarization intracellular signaling regulation actin cytoskeleton membrane extension focal adhesion integrin signaling contractile forces generation rear retraction among molecular components involved regulation locomotion phosphatidylinositol kinase pik pathway shown exert fundamental role pivotal node pathway represented serine threonine kinase phosphoinositide dependent protein kinase pdpk pdk pdk majority substrates belong agc family kinases related camp dependent protein kinase cyclic guanosine monophosphate dependent protein kinase protein kinase control plethora cellular processes downstream either pik pathways ras gtpase mapk mitogen activated protein kinase interestingly pdk demonstrated crucial regulation step cell migration activating several proteins protein kinase akt pkb akt myotonic dystrophy related cdc binding kinases alpha mrck rho associated coiled coil containing protein kinase rock phospholipase gamma plc integrin moreover pdk regulates cancer cell invasion well thus representing possible target prevent cancer metastasis human patients aim review summarize various mechanisms pdk controls cell migration process cell polarization actin cytoskeleton focal adhesion regulation finally discuss evidence supporting role pdk cancer cell invasion dissemination
ditaxis heterantha seeds source apocarotenoid heteranthin methyl oxo apo caroten oate saccharomyces cerevisiae degrade utilize apocarotenoid produce seven aromas oxo alpha ionone oxo alpha ionol oxo dihydro alpha ionone hydroxy beta cyclocitral safranal oxo isophorone isophorone however nothing known enzymology process steps produce present work cell free extracts cerevisiae cells grown presence absence heteranthin evaluated degradation grown heteranthin cell free extracts produced seven aromas absence four aromas hydroxy beta cyclocitral safranal oxo isophorone isophorone detected polyacrylamide gel electrophoresis page cell extracts previously grown heteranthin yielded protein band kda able cleave apocarotenoid band intensity proportional heteranthin concentration present extracts cultures grown absence heteranthin purified sample kda protein produced oxo alpha ionone heteranthin reaction product suggesting oxidation apocarotenoid position moiety maximal enzymatic production oxo alpha ionone observed degrees activation energy mol enzyme exhibited value heteranthin max moles min findings clearly supported presence least two ways heteranthin degradation cerevisiae one probably committed heteranthin induced synthesis oxo alpha ionol constitutive likely committed safranal production
dna damage response failure may influence efficacy dna damaging treatments determined expression genes involved distinct dna damage response pathways association response standard therapy twenty patients locoregionally advanced squamous cell head neck carcinoma enrolled treatment included induction chemotherapy icht docetaxel cisplatin fluorouracil followed concomitant chemoradiotherapy chrt radiotherapy alone volumetric metabolic therapeutic response determined fdg pet tumor matched normal tissues collected treatment gene expressions examined via quantitative real time polymerase chain reaction qrt pcr regulation apparently associated poor response icht regulation complete regression cases cases regulated rev expression showed complete regression chrt case rev overexpression resistant overexpression wrn independent predictor tumor relapse results suggest altered expression rev predicts sensitivity wrn overexpression unfavorable prognostic factor
dna glycosylases safeguard genome locating excising diverse array aberrant nucleobases created oxidation alkylation deamination dna since discovery years ago enzymes employ base flipping mechanism trap substrates six different protein architectures identified perform basic task work past several years unraveled details various dna glycosylases survey dna detect damage within duplex select correct modification catalyze base excision provide broad overview latest advances glycosylase mechanisms gleaned structural enzymology highlighting features common glycosylases well key differences define particular substrate specificities elsevier rights reserved
dna methylation traditionally thought established early development remain mostly unchanged thereafter healthy tissues although recent studies shown epigenetic mark dynamic epigenetic changes occur liver birth timing underlying biological processes leading dna methylation changes well understood hypothesized epigenetic reprogramming result terminal differentiation hepatocyte precursors using genomic approaches characterized dna methylation patterns mouse liver adulthood determine timing dna methylation change overlaps hepatocyte terminal differentiation examine genomic context changes identify regulatory elements involved cpgs analyzed throughout genome cpgs changed dna methylation methylation age cpgs changed dna methylation genome scale data six time points show dna methylation changes coincided terminal differentiation hepatoblasts hepatocytes also showed epigenetic reprogramming occurred primarily intergenic enhancer regions gene promoters less affected data suggest normal postnatal hepatic development maturation involves extensive epigenetic remodeling genome enhancers play key role controlling transition hepatoblasts fully differentiated hepatocytes study provides solid foundation support future research aimed revealing role epigenetics stem cell biology
dna microarrays one new tools genomics become quite commonplace plant science research within past decade essentially dna microarrays extension traditional molecular biology technique northern blotting unlike northern blotting however expression single gene monitored dna microarrays allow simultaneous monitoring thousands genes fact potentially organism genes single experiment currently available plant microarrays designed crops species model plant arabidopsis however microarray least one major weed species currently available furthermore cdna based microarrays prepared one species used investigate gene expression related species technology maturing becoming much accessible time begin utilizing microarrays weed science research questions related herbicide activity particularly well suited microarray approach additionally gene expression profiling via microarrays used address questions relating weed biology weed crop competition allelopathy parasitic weeds biological control weeds
dna vaccine third generation vaccine type based concepts techniques molecular biology closely mimic live infections induce antibody cell mediated immune responses thus much potential treating chronic viral infection cancer transport dna vaccine right target cells lymphoid tissues organs achieve high robust gene transfection efficiency simultaneously inducing maturation antigen presentation questions pose significant challenges addressing may require serious efforts developing better biomaterials carriers review dedicated discussion polymers nanoscale carriers dna vaccine summarize recent advances polymer science engineering overcome multilevel hurdles dna vaccine delivery conclude thoughts challenges opportunities may shape future polymers dna vaccination
dreb transcription factors usually play important regulatory roles responses plants abiotic stress study novel sldreb transcription factor tomato isolated yeast one hybrid system bioinformatics analysis showed sldreb single copy gene typical conserved domain located chromosome tomato genome sldreb protein confirmed localized cell nucleus profile physiological molecular responses sldreb gene drought stress transferred sldreb gene arabidopsis plants functionally characterized sldreb gene molecular detection vitro drought stress experiments data showed accumulation sldreb mrna roots tomato higher shoots strongly induced drought salt exogenous abscisic acid transcriptional activation gel mobility shift assay indicated sldreb protein exhibited specific mechanism recognizing ccgac motif promoters stress resistant genes transgenic arabidopsis data exhibited transgenic arabidopsis revealed obvious regulations accumulations sldreb erd mrna response drought stress physiological measurements demonstrated transgenic arabidopsis overexpressing sldreb gene remarkably increased accumulation osmolytes soluble sugar free proline reduced contents malondialdehyde leaves suggesting overexpression sldreb gene transgenic arabidopsis plays crucial regulatory roles maintaining balance osmotic potentials alleviating physiological damage response drought stress northern blotting also provided evidence tomato sldreb apparently regulated expressions drought resistant erd gene transcriptional activation pathway recognizing ccgac motifs nnccgacnn element promoter erd instead limiting specific dre element promoter rda led enhanced tolerance transgenic arabidopsis drought stress
driven beneficial effects human metabolism isoflavonoids gained considerable importance reflected increased number isoflavone rich foods food supplements pharmaceutical products market mainly derived soy red clover well known genuine isoflavone pattern altered processing data aglycone stability rare therefore thorough study thermal sensitivities biochanin daidzein formononetin flavone genistein glycitein isoflavone performed samples heated degrees period three different values degradation aglycones monitored hplc dad analyses therefrom structure related stability characteristics could established virtually decay observed degradation prominent individual aglycone retention dependent heating time daidzein labile compound time interval curve fitting data revealed first order degradation kinetics flavone glycitein remaining aglycones exhibited sigmoidal degradation pattern
drought major environmental stress limits potato solanum tuberosum production worldwide transcription factor dreba cbf specifically interacts dehydration responsive element dre crt induces expression genes involved environmental stress tolerance arabidopsis thaliana study dreba thaliana overexpressed potato cultivar longshu agrobacterium tumefaciens mediated transformation transformation overexpression dreba assessed using pcr southern blotting semi quantitative pcr analysis results clearly confirmed dreba gene successfully integrated genome expressed pot grown plants leaves subjected drought stress treatments withholding water days activities superoxide dismutase sod catalase cat peroxidase pod mda content electrolyte leakage leaves non transgenic transgenic plants leaves increased average activities sod cat pod transgenic plant leaves respectively showed increase non transgenic mda content electrolyte leakage non transgenic plant leaves respectively increased relative transgenic plant leaves water withheld days control plants exhibited severe wilting transgenic plants partially wilting results demonstrated overexpression dreba resulted improved drought stress tolerance tuberosum plants
dry eye syndrome collection common disorders multifactorial etiology although epidemiology dry eye well studied reports genetic patterns might influence susceptibility dry eye reported frequency non sjogren aqueous deficient dry eye patients expressing muc splice variant mucin muc may lower normal control group imbert darling jumblatt foulks couzin steele young muc splice variants human ocular surface tissues possible differences dry eye patients normal controls exp eye res also bao sun liu correlation polymorphism estrogen receptor gene dry eye syndrome postmenopausal women yan xue bao reported difference chinese dry eye control groups frequency polymorphism estrogen receptor alpha alpha present study determined statistical significance generality observations tested muc splice variant difference subject groups reflected difference muc variable number tandem repeat vntr size class perfect correlation muc muc splice variant pattern snp genotype frequency snp controlling splicing event contrast western southern blotting indicated muc vntr size class corresponded muc snp genotype cases determined status muc snp normal dry eye populations female caucasians muc snp genotype frequency normal control group statistically different non sjogren aqueous deficient dry eye group ocular surface staining evaporative dry eye group also tested snp analyze polymorphism alpha gene found significant difference snp genotype frequency control group either dry eye subtypes thus among caucasians evidence association era gene polymorphism dry eye syndrome previously described chinese population conclusion etiologies evaporative dry eye non sjogren aqueous deficient dry eye known different however results suggest subtypes dry eye disease may share common mechanism factor related muc genotypic differences affects susceptibility ocular surface damage altered susceptibility may related muc vntr size class therefore mechanisms influencing protection ocular surface inflammation damage different types dry eye disease warrant investigation particularly relation muc genotype elsevier ltd rights reserved
development hippo signaling pathway regulates key physiological processes control organ size regeneration stem cell biology yes associated protein yap major transcriptional activator hippo pathway scaffold protein iqgap interacts binding partners integrate diverse signaling pathways study report iqgap binds yap modulates activity iqgap yap immunoprecipitated cells vitro analysis pure proteins demonstrated direct interaction iqgap yap analysis multiple fragments protein showed interaction occurs via domain iqgap tead binding domain yap interaction iqgap yap functional effects knock endogenous iqgap significantly increased formation nuclear yap tead complexes transcription assays performed iqgap null mouse embryonic fibroblasts hek cells iqgap knockdown crispr cas quantification demonstrated yap tead mediated transcription cells lacking iqgap significantly greater control cells data reveal iqgap binds yap modulates transcriptional function suggesting iqgap participates hippo signaling
human pregnancy paternally inherited antigens expressed fetal placental unit elicit expansion antigen specific cells cells persist years asmemory cells effects long term maternal health unknown shared placenta tumor associated antigens expressed placenta tumors areminimally expressed absent normal adult tissues hypothesized maternal cells elicited antigens alter risk cancers expressing antigen pregnancy tested inmice using chicken ovalbumin ova surrogate shared placenta tumor antigen hemizygous ova transgenicmales bred wild type cbl females haplotype fetuses inherited expressed ova maternal ova hkb specific cells became detectable gestation persisted animals weeks determine whether cells might influence growth ova expressing tumors ova bred females ova thymoma cells inoculated subcutaneously ova bred wild type bred virgin females monitored growth ova bred mice prolonged survival compared virgin mice progression tumors delayed comparison wild type bred virgin females thus paternally inherited ova antigen elicited cell response pregnancy associated delayed growth ovaexpressing tumors following pregnancy data suggest possible role antigen specific cells protecting parous females tumors bearing shared placenta tumor antigens summary sentence gestational exposure shared placenta tumor associated antigen may induce antigen specific cells may lower cancer risk tumors bearing antigen
dye decolorizing peroxidases dyps heme enzymes comprise family dimeric alpha beta barrel structural superfamily proteins first dyp identified relatively recently fungus bjerkandera adusta characterized ability catalyze decolorization anthraquinone based industrial dyes enzymes known present three domains life appear occur plants animals involved range physiological processes although many cases roles remain unknown prevented development biocatalytic potential includes transformation lignin review highlights functional diversity dyps light phylogenetic structural biochemical data phylogenetic analysis reveals existence least five classes dyps potential physiological roles discussed based part synteny analyses finally considerable biotechnological potential dyps summarized crown copyright published elsevier inc rights reserved
elevated mitochondrial glcnacylation caused hyperglycemia occurs diabetes significantly contributes mitochondrial dysfunction diabetic cardiomyopathy however little known enzymology mitochondrial glcnacylation herein investigated enzymes responsible cycling glcnac mitochondrial proteins studied mitochondrial transport udp glcnac analyses purified rat heart mitochondria normal streptozocin treated diabetic rats show increased mitochondrial glcnac transferase ogt concomitant decrease mito specific glcnacase oga strikingly ogt mislocalized cardiac mitochondria diabetic rats interaction ogt complex observed normal rat heart mitochondria visibly reduced diabetic samples ogt mislocalized matrix live cell oga activity assays establish presence glcnacase within mitochondria furthermore establish inner mitochondrial membrane transporter pyrimidine nucleotide carrier transports udp glcnac cytosol inside mitochondria knockdown transporter substantially lowers mitochondrial glcnacylation inhibition ogt oga activity within neonatal rat cardiomyocytes significantly affects energy production mitochondrial membrane potential mitochondrial oxygen consumption data suggest cardiac mitochondria robust glcnac cycling also dysregulation glcnacylation likely plays key role mitochondrial dysfunction associated diabetes
elongation factor key regulation factor translation many organisms including plants bacteria fungi animals insects investigate nature function elongation factor beta spodoptera exigua seef beta cdna cloned contained open reading frame nucleotides encoding protein amino acids predicted molecular weight kda northern blotting revealed seef beta mrna expressed brain epidermis fat body midgut malpighian tubules ovary tracheae pcr revealed seef beta mrna expressed different levels fat body whole body different developmental stages rnai experiments survival rate insects injected seef beta dsrna injection significantly lower three control groups elongation factors transcription factors also influenced beta suppressed results demonstrate seef beta key gene transcription exigua
endonuclease cleavage rate limiting step decay nonsense containing human beta globin mrna erythroid cells truncated intermediates thus generated polyadenylated stable parent mrna northern blotting commonly used measure decay rate full length mrna nuclease protection used assay fate decay intermediates adapted sensitive facile mbrace assay lasham nucleic acids res quantitatively monitor decay process detecting full length beta globin decay intermediates
enzyme motions broad range time scales play important role various intra intermolecular events including substrate binding catalysis chemical conversion product release relationship protein motions catalytic activity contemporary interest enzymology understand factors influencing rates enzyme catalyzed reactions dynamics protein solvent ligand complex must considered current review presents two case studies enzymes dihydrofolate reductase dhfr thymidylate synthase tsase discusses role protein motions catalyzed reactions specifically discuss utility kinetic isotope effects kies temperature dependence tools probing phenomena
enzymology one fundamental areas biochemistry involves study structure kinetics regulation enzyme activity research area often conducted purified enzymes extrapolated vivo conditions specificity constant michaelis menten constant vmax catalytic power inhibition constant expresses efficiency enzyme catalyst parameters usually determined enzyme catalysis inhibition study work propose classroom experiment determination using polyphenol oxidase enzyme banana addition inhibition experiment carried cysteine aminobenzene sulfonamide classical ppo inhibitors vmax values banana ppo towards catechol methyl catechol determined lineweaver burk method although variations kinetic parameters results among students students generally carried program successfully correctly identifying inhibition type inquiry based problem solving approach curriculum facilitates understanding basic concepts biochemistry application
epithelial mesenchymal transition emt associated metastasis formation well generation maintenance cancer stem cells way emt contributes tumor invasion heterogeneity chemoresistance morphological functional changes involved processes require robust reprogramming gene expression partially accomplished transcriptional level alternative splicing another essential layer gene expression regulation expands cell proteome step post transcriptional regulation gene expression tightly controls cell identity epithelial mesenchymal states stem cell differentiation importantly dysregulation splicing factor function cancer specific splicing isoform expression frequently occurs human tumors suggesting importance alternative splicing regulation cancer biology review briefly discuss role emt programs development stem cell differentiation cancer progression next focus selected examples key factors involved emt stem cell differentiation regulated post transcriptionally alternative splicing mechanisms lastly describe relevant oncogenic splice variants directly orchestrate cancer stem cell biology tumor emt may envisioned novel targets therapeutic intervention
erythema nodosum leprosum enl painful inflammatory complication leprosy occurring lepromatous leprosy patients borderline lepromatous patients significant cause economic hardship morbidity mortality leprosy patients understanding causes enl limited performed systematic review published literature critically evaluated evidence role neutrophils immune complexes ics cells cytokines immunological factors could contribute development enl searches literature performed pubmed studies independent published date using samples patients enl included search revealed articles eligible studies included systematic review studies demonstrate enl may associated neutrophilic infiltrate clear whether mediated process presence ics epiphenomenon increased levels tumor necrosis factor pro inflammatory cytokines support role cytokine inflammatory phase enl necessarily initiation cell subsets appear important enl since multiple studies report increased ratio skin peripheral blood patients enl microarray data identified new molecules whole pathophysiological pathways associated enl provides new insights pathogenesis enl studies enl often difficult compare due lack case definitions treatment status timing sampling well use different laboratory techniques standardized approach issues would useful enl appears complex interaction various aspects immune system rigorous clinical descriptions well defined cohorts patients systems biology approach using available technologies genomics epigenomics transcriptomics proteomics could yield greater understanding condition
eucheuma denticulatum economically industrially important red alga valuable marine resource although micrornas mirnas play essential role gene post transcriptional regulation research conducted identify characterize mirnas denticulatum study identified mirnas conserved mirnas one novel mirna small rna reads high throughput sequencing combined bioinformatics analysis blast searching mirbase uncovered potential mirna families conservation diversity analysis predicted mirna families different plant species performed comparative alignment homology searching total randomly selected mirnas respectively validated northern blotting stem loop reverse transcription pcr thereby demonstrating reliability mirna sequencing data altogether potential target genes predicted using psrobot targetfinder target genes classification enrichment conducted based gene ontology analysis functions target gene products associated metabolic pathways predicted kyoto encyclopedia genes genomes pathway analysis cytoscape network constructed explore interrelationships mirnas mirna target genes target genes large number mirnas diverse target genes play important roles understanding essential biological processes denticulatum uncovered information serve important reference protection utilization unique red alga future
evidence suggests exosomes transfer genetic material cells however roles hepatitis virus hbv infection remain unclear report exosomes present sera chronic hepatitis chb patients contained hbv nucleic acids hbv proteins transferred hbv hepatocytes active manner notably hbv nucleic acids detected natural killer cells chb patients healthy donors exposure hbv positive exosomes real time fluorescence microscopy flow cytometry dioctadecyl tetramethylindodicarbocyanine chlorobenzenesulfnate salt labeled exosomes observed interact cells taken cells enhanced transforming growth factor beta treatment furthermore hbv positive exosomes impaired cell functions including interferon ifn gamma production cytolytic activity cell proliferation survival well responsiveness cells poly stimulation hbv infection suppressed expression pattern recognition receptors especially retinoic acid inducible gene rig cells resulting dampening nuclear factor kappa kappa mitogen activated protein kinase pathways results highlight previously unappreciated role exosomes hbv transmission cell dysfunction chb infection cellular molecular immunology published online may
evolutionary algorithms eas form popular optimisation paradigm inspired natural evolution recent years field evolutionary computation developed rigorous analytical theory analyse runtimes eas many illustrative problems apply theory simple model natural evolution strong selection weak mutation sswm evolutionary regime time occurrences new mutations much longer time takes mutated genotype take population situation population contains copies one genotype evolution modelled stochastic process evolving one genotype means mutation selection resident mutated genotype probability accepting mutated genotype depends change fitness study process sswm algorithmic perspective quantifying expected optimisation time various parameters investigating differences similar evolutionary algorithm well known show sswm moderate advantage crossing fitness valleys study example sswm outperforms taking advantage information fitness gradient
exogenous short biologically active peptides epitalon ala glu asp gly bronchogen ala glu asp leu vilon lys glu concentrations significantly influence growth development differentiation tobacco nicotiana tabacum callus cultures epitalon bronchogen particular increase growth calluses stimulate formation growth leaves plant regenerants regulatory activity short peptides appears low peptide concentrations action extent like activity phytohormones seems signaling character epigenetic nature investigated peptides modulate tobacco cells expression genes including genes responsible tissue formation cell differentiation peptides differently modulate expression cle family genes coding known endogenous regulatory peptides knox genes transcription factor genes grf growth regulatory factor genes coding respective dna binding proteins topoisomerases nucleases others thus level transcription plants system short peptide regulation formation long known peptide regulators growth development peptides studied may related new generation plant growth regulators used experimental botany plant molecular biology biotechnology practical agronomy
exosomes recently appeared novel source non invasive cancer biomarkers since tumor specific molecules found exosomes isolated biological fluids previously analyzed proteome urinary exosomes mass spectrometry identified proteins differentially expressed prostate cancer patients compared healthy males since mass spectrometry far commonly used clinical laboratories investigated whether antibody based methods western blot elisa used validate use identified proteins prostate cancer biomarkers western blot experiments designed detect flotillin tmem rabb lamtori showed level proteins higher urinary exosomes prostate cancer patients compared healthy males furthermore receiver operating characteristic curve flotillin samples controls patients showed area curve sensitivity threshold set give specificity addition elisa based detection flotillin park showed combination proteins able distinguish prostate cancer patients healthy controls sensitivity specificity several promising biomarkers identified mass spectrometry could evaluated western blot elisa due low exosomal amount lack good antibodies conclusion results show several urinary exosomal proteins identified prostate cancer biomarkers mass spectrometry high diagnostic value also analyzed immunology based methods thus bringing biomarkers closer potential clinical use elsevier rights reserved
exotoxins produced actinobacillus pleuropneumoniae apx play major roles pathogenesis pleuropneumonia swine study investigated role apxi hemolysis cellular damage using novel apxia mutant apxia developed parental strain pleuropneumoniae serotype produces apxi vitro genotype apxia confirmed pcr southern blotting gene sequencing exotoxin preparation derived apxia analyzed bioactivity towards porcine erythrocytes alveolar macrophages analysis results indicated apxia contained kanamycin resistant cassette inserted immediately apxia gene phenotype analysis apxia revealed difference growth rate compared parental strain meanwhile apxi production abolished bacterial culture supernatant exotoxin preparation inability apxia produce apxi corresponded loss hemolytic cytotoxic bioactivity exotoxin preparation demonstrated hemolysis lactate dehydrogenase release mitochondrial activity apoptosis assays additionally virulence apxia appeared attenuated fold balb mice collectively apxi components exotoxin preparation pleuropneumoniae serotype responsible hemolytic cytotoxic effects porcine erythrocytes alveolar macrophages
expanding remote areas mexico worldwide scale ten striped insect colorado potato beetle cpb leptinotarsa decemlineata say risen innocuous beetle prominent global pest diverse life cycle phenotypic plasticity adaptation adverse conditions capability detoxify tolerate toxins make insect appear virtually indestructible increasing advances molecular biology tools biotechnological warfare deployed combat cpb last three decades genetically modified potato created new challenge beetle reviewing hundreds scientific papers dealing cpb control became clear even biotechnological means control used alone would defeat colorado potato beetle control measure appears provoking potato beetle exhibit remarkable adaptability nonetheless potential adaptation techniques increased knowledge pest thus opened possibilities devising sustainable cpb management programs
exportin xpo microrna mirna related nuclear export protein disorder may lead dysregulation mirnas recent studies demonstrated aberrant expression xpo might participate carcinogenesis certain cancers however limited information xpo thyroid cancer development study quantified expression level xpo real time polymerase chain reaction pcr patients cancer tissues adjacent normal tissues confirming xpo expression evaluated association xpo potential functional single nucleotide polymorphisms snps risk chinese population cases controls finally luciferase assays performed investigate function snp xpo untranslation region message ribonucleic acid rna levels xpo significantly lower cancer tissues normal tissues snps screening noble snp identified xpo functional region results case control study also confirmed xpo significantly associated onset adjusted odds ratio confidence interval adverse influence polymorphism mainly observed age years female staging metastasis early stage following luciferase test revealed critical role triggering xpo expression furthermore patients allele showed lower xpo expression level xpo snp influences expression xpo snp could also potential biomarker diagnosis clinical especially chinese population
exposure watermelon fruit ethylene leads acute placental tissue softening watersoaking mrna differential display strategy utilized isolate characterize genes associated development disorder watermelon fruit harvested full ripe stage exposed ethylene degrees dna free total rna isolated fruit treated air ethylene reverse transcribed using three different one base anchored oligo primers high stringency pcr performed using eight different mer arbitrary primers combination fluorescent labeled one base anchored oligo primers pcr fluorescent labeled products separated polyacrylamide sequencing gel differentially expressed bands isolated confirmation true positive bands performed reverse northern blotting comparison mrna profiles ethylene air treated fruit revealed genes differentially expressed partial cdnas isolated characterized blast search results revealed significant homologies ethylene biosynthesis signal transduction pathway genes lipid metabolizing enzymes proteins involved plant defense responses radical scavenging enzymes exonucleases expansins northern blot analysis rna isolated air ethylene treated fruit stored revealed ethylene dependent expression pattern corresponding genes data indicate ethylene treatment watermelon fruit results rapid regulation oxidative hydrolytic enzymes elsevier rights reserved
extensively employed reproductive science term fetal maternal interface describes maternal fetal tissues interact womb produce transient placenta purporting theory pregnancy mother fetus placenta already separate entities however considerable scientific evidence supports different theory also elaborated feminist new materialist literatures informed interviews placenta scientists well secondary sources placental immunology developmental origins health disease explore evidence interfacing pregnancy intra action mutual emergence entities simultaneous practices differentiation connection argue attending evidence figured intra action enables recognize account attend diffuse responsibilities fetal maternal outcomes extend beyond mothers biosocial milieus pregnancy reimaging intra action placentas new understanding constitutes healthy pregnancy becomes possible
facioscapulohumeral dystrophy fshd autosomal dominant muscular dystrophy retrospectively studied three families two indian one nepalese affected members male female mean age onset weakness years patients classified according muscle groups affected face scapula humeral pelvic girdle peroneal loss independent ambulation fsh four fsh fsh one progression weakness classified eight cases one static three eleven patients electromyographic findings suggestive myopathy one features neurogenic involvement molecular diagnosis done southern blotting using probe digestion genomic dna ecori ecori blni twelve patients three unaffected relatives ecori fragment smaller seen unaffected subjects size ecori fragment varied affected subjects constant affected members family molecular diagnosis southern blotting helped provide genetic counseling families
familial hyperaldosteronism type autosomal dominant disorder caused unequal cross gene encoding steroid beta hydroxylase cypb aldosterone synthase cypb giving rise chimeric cypb cypb gene displays aldosterone synthase activity regulated acth instead angiotensin aim report unprecedented case novo unequal crossover mutation cypb cypb genes causing patients methods index case old chilean male diagnosed primary aldosteronism family members also studied biological parents brother sisters daughters son plasma renin activity serum aldosterone ratio measured patients genetic analyses performed using long extension pcr pcr dna sequencing southern blot methods results diagnosed index case daughters son parents siblings pcr southern blotting demonstrated presence chimeric cypb cypb gene solely affected subjects suggesting case novo mutation sequence analysis showed unequal cross cypb cypb intron cypb also identified polymorphism intron cypb genome index case father conclusion describe unprecedented case unequal cross mutation chimeric cypb cypb gene causing may linked polymorphism index case father germ line endocrinol invest editrice kurtis
fasting one simplest metabolic challenges performed humans report first time comprehensive analysis human fasting metabolome obtained analysis plasma urine samples small cohort healthy volunteers using nuclear magnetic resonance nmr gas chromatography liquid chromatography mass spectrometry intra inter individual variation metabolites measurement four overnight fasting samples collected volunteer four week period one additional sample per volunteer collected following prolonged fasting period amongst total quantified entities plasma around shown change significantly concentration volunteers extended fasting addition known markers plasma free fatty acids glycerol ketone bodies reflect changes body fuel management fasting conditions wide range new entities alpha aminobutyrate well amino keto acids identified fasting markers based multiple correlations amongst metabolites selected hormones plasma leptin insulin like growth factor igf robust metabolic network coherent regulation wide range metabolites could identified metabolomics approach described demonstrates plasticity human metabolism identifies new robust markers fasting state
fatty acids well known influence human metabolism signal transduction also substantial component cellular membranes regulate basic properties functions membranes owing multiple functions fatty acid profiles cell membranes great interest studying relationship membrane biochemical compositions functions hcl catalyzed derivation method gas chromatography mass spectrometry analysis method developed accurately profile fatty acids cell membranes erythrocytes leukocytes platelets detection limits fatty acids ranged limits quantitation finally established method used profile membrane fatty acids healthy volunteers north south china results revealed significant differences fatty acid profiles two regions particularly erythrocytes technique may applied cell membrane studies generate new biological hypotheses concerning fatty acid composition membrane functions well construct related disease profiles
fermentation herb polygonum hydropiper phl cassava pulp feed additive production simultaneous flavonoid dissolution investigated two stage response surface methodology rsm based plackett burman factorial design design used optimize flavonoid dissolution protein content using screening function design four different significant factors two response variables acquired factors phl flavonoid dissolution versus factors inoculum size fermentation time protein content two rsms used sequentially improve values two response variables separately mutual corroboration experimental results present study confirmed validity associated experimental design validation experiment showed flavonoid dissolution rate protein content gaining increase control respectively present study confirms feasibility feed additive production saccharomyces cerevisiae phl simultaneous optimization flavonoid dissolution protein content using two stage rsm international union biochemistry molecular biology inc volume number pages
reports educational counseling support resources exist lynch syndrome disorder requiring multi organ cancer screening specialized medical care throughout adult life describe development efficacy two resources designed address need memorial sloan kettering cancer center clinical genetics service annual lynch syndrome educational workshop lsew quarterly lynch syndrome patient advocacy network lspan support group lsew lspan implemented beginning participant survey data evaluating satisfaction clarity unmet needs event retrospectively analyzed summarized using descriptive statistics annual lsew attendance ranged total participants lsew year participants indicated need support group preferred person meetings frequency every months lsew year participants reported satisfaction lsew expressed interest secure online support common themes improvement included increased time question answer sessions additional introductory genetics education responding lspan participants total survey responses meetings found meetings helpful information clear presence genetic counselor useful desired discussion topics included coping stress anxiety development support network family communication genetic testing decisions bereavement following genetic counseling need exists ongoing educational emotional support implementation resources lsew lspan feasible perceived helpful participants
fibroblast growth factor fgf plays important role cortical development however genes downstream fgf mediate effect largely unknown performed microarray screening genes regulated fgf using primary cortical neuron culture derived embryonic day mouse forebrains study analysed previously uncharacterised gene encoding amino acid protein hereby named coiled coil protein ccp showed modest regulation upon fgf stimulation northern blots pcr showed specific expression ccp multiple tissues including adult embryonic brains situ hybridizations revealed ccpl expressed cortical plate reelin tbr positive layers dorsal cortex furthermore expression pattern ccp reflected aspects tangential migration cortical progenitors early phase observed expressed ccpl protein localised endo lysosomal compartment cell body well vesicles present processes primary cortical neurons oligodendrocyte cell line elsevier rights reserved
fibrolamellar carcinoma unique type hepatocellular carcinoma distinctive predilection young patients without underlying liver disease characteristic large neoplastic cells intervening dense fibrosis expression keratin activation protein kinase often formation dnajbi prkaca fibrolamellar carcinoma similar prognosis conventional hepatocellular carcinomas arising non cirrhotic livers current american joint cancer committee staging system provide optimal stratification patients fibrolamellar carcinoma alternate systems considered future effective treatment fibrolamellar carcinoma complete resection novel therapies may horizon investigation molecular biology fibrolamellar carcinoma continues elsevier inc rights reserved
food protein induced enterocolitis fpies non ige cell mediated food allergy severe lead shock despite potential seriousness reactions awareness fpies low high quality studies providing insight pathophysiology diagnosis management lacking clinical outcomes poorly established consensus document result work done international workgroup convened adverse reactions foods committee american academy allergy asthma immunology international fpies association advocacy group first international evidence based guidelines improve diagnosis management patients fpies research prevalence pathophysiology diagnostic markers future treatments necessary improve care patients fpies guidelines updated periodically evidence becomes available
food security main concern government due malnutrition worldwide aim study assess macronutrients amino acids five species grasshoppers consumed rural urban communities samples captured different agro climatic environment conditions wherever vegetation grows macronutrients raw analyzed dry basis aoac methods amino acids cation exchange chromatography obtained data showed high protein content ranging lipids minerals fiber soluble carbohydrates including essential amino acids play important role human metabolism tryptophan limiting factor different species studied grasshoppers high proteins essential macromolecules human life decrease protein energy malnutrition excess amino acids releasing amino group provide energy well soluble carbohydrates also minerals needed prevent anemia fiber non digestible carbohydrates essential healthy diet conclusion daily consumption grasshoppers good source nutrients provide optimal health population
fragile syndrome fxs main cause heritable mental retardation patients associated increased number cgg repeats within untranslated region fmr gene methylation expanded repeats promoter fxs female carriers transmitting males expansions repeats premutated alleles alleles premutations unstable female meioses normal premutated repeats unmethylated males subject lyonization females report postnatal prenatal molecular diagnoses fxs made conventional pcr southern blotting cohort italian patients families period years moreover tested two novel high performance pcr procedures pcr chimeric primer amplidex fmr kit patients compared results previous observations concluded high performance pcr assays complement results obtained conventional methods replace southern blot procedure consequently also based cost benefit considerations fxs diagnostic flowchart consists conventional pcr southern blotting plus chimeric primer pcr procedure whereas amplidex procedure reserved doubtful cases elsevier rights reserved
fragile syndrome fxs common form inherited mental retardation disease caused due expansion cgg triplet untranslated region fragile mental retardation fmr gene cases abnormally large size cgg repeat undergoes hypermethylation turn silences fmr gene causing thereby complete lack protein product called fragile mental retardation protein fmrp lack fmrp due gene silencing production faulty protein due point mutation domain fmrp alters translational process neurons leads expression mental retardation phenotype patients fmrp expressed ubiquitously tissues however predominantly expressed neurons testis possesses heterogeneity found many isoforms due alternative splicing fmr transcript based data western slot northern blotting immunohistochemical studies report regulation fmr gene fmrp mice brain age dependent manner present finding important respect fmrp dependent various brain functions learning memory cognition etc decrease advancing age
frmd mutations associated linked idiopathic congenital nystagmus icn however underlying mechanisms whereby mutations frmd lead icn remain unclear previous study first frmd splice variant frmd cloned identified frmd hypothesized play significant role neuronal differentiation development present study investigated novel multiple exon skipping mrna splice variant frmd termed frmd detected cells using northern blotting mrna expression levels frmd developing human fetal brain examined using reverse transcription polymerase chain reaction pcr expression levels cells treated retinoid acid bone morphogenetic protein investigated using quantitative pcr results revealed expression frmd spatially temporally restricted human fetal brain development upregulated upon induced neuronal differentiation cells results indicated novel splice variant frmd frmd may play role neuronal development
functional genomic analysis mould pathogen aspergillus fumigatus identified multiple secondary metabolism genes upregulated host niche intriguingly transcriptomic analyses infectious germlings germinating spores mutants lacking laea methyltransferase reveal differential expression transposable elements tes often flank secondary metabolite gene clusters study investigate clinical environmental isolates structure distribution specific class fumigatus long interspersed nuclear element line like retrotransposons occupying subtelomeric loci fumigatus genome probe stability response laboratory host imposed stresses silico analyses revealed class belongs tad clade line like elements southern blotting line specific probe clinical environmental isolates revealed high variability insertion pattern strains active transcription line like element discernable type strain pcr one tested clinical isolates contain lines arguing absolute requirement line mediated activities human infections finally found preliminary evidence association mycovirus infection expansion tad element populations discrete fumigatus genomes elsevier inc rights reserved
genetic changes epigenetic changes also play major role causing epilepsy great importance generally many genomic positions associated disease genetic products cell routs contribute affected epigenetic mechanisms demonstrate major influential role epigenetic mechanisms causing epilepsy seems like many epigenetic properties discovered yet thus various studies required discover epigenetic mechanisms relationship mechanisms role causing various diseases epilepsy research various papers important inhibitory mechanisms epigenetic cases involved pathogenicity mechanism various epileptic syndromes period extracted different resources pubmed science direct using keywords epilepsy histone current therapeutic medicines satisfactory need new therapeutic methods care patients thus present research conducted order discover epigenetic mechanisms goal achieving new effective medicines study reveals role dna methylation epigenetic mechanisms involved causing epilepsy furthermore epigenetic changes changes following translation histones tails dna methylation appropriate goals new treatments capable changing compared genetic factors like mutation challenges field resulted vast researches conducted epigenome similar engaged mechanisms associated epigenetics epigenetic mechanisms play major role development growth brain goal future achieve epigenetic general treatment nervous disorders epilepsy thus manipulating epigenetic mechanisms may next goal epilepsy treatment side effects treatment systematic epigenetic medicines also need predicted question enzymology specifically diagnoses damaged areas brain targets selected genes associated epilepsy necessary step taken must addressed future
gene promoters variable repartition agct nucleotides according probabilistic behaviours essentially depending position string paper aims provide model configuration model derive non uniform confidence bounds probability distributions strings uniform bound deriving previous works zhao inference trends time series stat soc demanding model data based study allows clarify suggestions open way applications molecular biology
genetic counselors trained health care professionals effectively integrate psychosocial counseling information giving practice preparing genetic counseling students clinical practice challenging task particularly helping develop effective active counseling skills resistance incorporating skills may stem decreased confidence fear causing harm lack clarity psycho social goals author reflects personal challenges experienced teaching genetic counselling students work psychological social complexity proposes genetic counseling adaptation continuum model methodology guide students use advanced counseling skills
genetic introgression recently become important concern conservation genetics occur rare related common species various genetic groups individuals different origins aims determine whether hybridisation introgression occurs emys orbicularis subspecies natural contact zone france determine geographic extent contact zone distinct subspecies france iii evaluate level introgression occurs finally evaluate whether combining mitochondrial nuclear genetic markers reflects contact zone one genetic marker used introgression evaluated genotyping biparentally inherited microsatellites sequencing maternally inherited cytochrome gene french populations demonstrated strong introgression subspecies natural conditions old contact zone southern eastern france results corroborated introgression reflects past natural events also demonstrated human impact altered patterns finally confirmed combination mitochondrial nuclear genetic markers appropriate reveal introgression use one genetic marker
genetic switches activity rna polymerase rnap directly regulated external signals obtained engineering strategy splitting protein fragments using regulatory domains modulate reconstitution robust switchable systems excellent dark light properties obtained light activatable vvd domain variants regulatory domains best split position found working switches exploit either light induced interactions vvd domains allosteric effects split fragments show high modularity combined different regulatory domains chemically inducible interaction enabling chemically controlled switches summarize rna polymerase based switches powerful tools implement light activated gene expression different contexts moreover results studied split positions domain organizations may facilitate future engineering studies related proteins
genetically modified organisms increasingly used production feed food met opposition consumers aim study use molecular biology methods particular emphasis techniques real time pcr research detection identification genetically modified feed research materials samples feed taken feed produced used animal nutrition poland years applied research methods included pcr real time pcr techniques consisted detection determination dna content genetically modified plants cascade methods used study included screening method detection gmos method identifying type gmo methods quantitative analysis gmo content part research task years total samples feed towards gmos examined positive result found cases frequently positive samples found presence genetically modified soybeans moreover within years increase number positive rape samples observed maize contained least positive samples gmo content legislative threshold found vast majority samples containing soy maize rapeseed number samples containing gmo respectively analysis feed market poland indicates soybean plant common genetically modified crop analysis origin sources rapeseed showed reasons sought batches rapeseed imported third countries observed regard situation maize feed market poland situation changed radically result decree ministry agriculture issued prohibiting cultivation mon maize polish fields result study showed proportion genetically modified feed feed market poland similar countries source gmos feed polish market feed materials imported poland source feed protein
genomic integration transgene lentiviral vector proved efficient method produce single transgenic animals failed create multi gene transgenic offspring exploited lentivirus generate double transgenic piglets female germline recombinant lentivirus containing fluorescent proteins genes dsred venus injected perivitelline space cell stage vitro porcine embryos compared control group significantly decreased proportion blastocysts two fluorescent protein genes expressed almost injected embryos total injected vitro embryos transferred recipients one recipient gave birth three live offspring one female piglet identified genomic transgene integration pcr analysis subsequently female transgenic founder mated naturally wild type boar gave birth two litters total generation piglets among venus dsredl genes detected piglets kinds organs pcr pcr respectively expression two fluorescent proteins visible four different frozen tissue sections pcr positive piglets copies transgenes detected integrated second generation genome southern blotting analysis transgenes heritable stably integrated generation results indicated first time lentiviral vector combined natural mating potential become simple practical technology create germline double transgenic livestock biomedical animals elsevier rights reserved
geotrichum candidum ubiquitous yeast essential component production many soft cheeses developed multilocus sequence typing mlst scheme five retained loci nup ura ura sapt plb sufficiently divergent distinguish sequence types sts among candidum strains tested phylogenetic analyses defined five main clades one clade restricted environmental isolates three clades included distinct environmental isolates dairy strains fifth clade comprised strains sts among two isolated milk cheese dairy environment findings suggest adaptation dairy ecosystems group specialized european candidum strains addition developed polymerase chain reaction inter long terminal repeat scheme fast reproducible random amplification polymorphic dna like method candidum type closely related dairy strains could distinguished mlst overall findings distinguished two types dairy strains one forming homogeneous group little genetic diversity closely related environmental isolates neither regional cheese specificity observed dairy candidum strains analysed present study sheds light genetic diversity dairy environmental strains candidum thus extends previous characterizations focused cheese isolates species copyright john wiley sons ltd
gibel carp carassius auratus gibelio bloch commercially important freshwater cultured fish china threatened myxosporeans particularly thelohanellus wuhanensis myxobolus honghuensis wulii turpisrotundus developed multiplex pcr assay simultaneous detection myxosporeans specific primers species designed based rdna gene wuhanensis rdna honghuensis wulii rdna gene turpisrotundus specificity testing confirmed primer sets cross reactivity related myxosporean species tested detection limits multiplex pcr assay spores wuhanensis honghuensis wulii turpisrotundus respectively following screening field samples analytical sensitivity present multiplex pcr assay found similar sensitivity obtained singleplex pcr assays higher microscopic examination moreover kappa analysis showed strong agreement results singleplex multiplex pcr assays indicating developed multiplex pcr assay efficient approach diagnosis myxosporeans infecting gibel carp
glomerular visceral epithelial cells podocytes play critical role maintenance glomerular permselectivity podocyte injury manifesting proteinuria cause many glomerular diseases reported previously calcium independent phospholipase ipla cytoprotective complement mediated glomerular epithelial cell injury studies ipla mice demonstrated important role ipla mitochondrial lipid turnover membrane structure metabolism aim present study employ ipla mice better understand role ipla normal glomerular podocyte function well glomerular injury show deletion ipla cause detectable albuminuria however resulted mitochondrial structural abnormalities enhanced autophagy podocytes well loss podocytes aging mice moreover induction anti glomerular basement membrane nephritis young mice ipla mice exhibited significantly increased levels albuminuria podocyte injury loss podocytes compared wild type thus ipla protective functional role normal glomerulus glomerulonephritis understanding role ipla glomerular pathophysiology provides opportunities development novel therapeutic approaches glomerular injury proteinuria
glomerulonephritis still common cause end stage renal disease accumulation glomerular macrophages proliferation mesangial cells deposition extracellular matrix proteins pathobiological hallmarks pharmacological interventions inhibit insults may beneficial retardation progression honokiol originally isolated magnolia officinalis shows antioxidative anti inflammatory antiproliferative activities variety inflammation models study first investigated vivo effects honokiol rat anti thy nephritis anti thy nephritis induced wistar rats injecting mouse anti rat thy antibodies intravenously nephritic rats randomly assigned receive honokiol twice day vehicle killed various time points glomerular histology immunohistopathology urine protein excretion studied western blotting conducted markers proliferation adhesion molecules chemokine extracellular matrix gene expression evaluated northern blotting honokiol treated nephritic rats excreted less urinary protein lower glomerular cellularity sclerosis increased intraglomerular proliferating cell nuclear antigen akt phosphorylation nephritic rats could abolished treatment honokiol honokiol also alleviated glomerular monocyte chemoattractant protein intracellular adhesion molecule similar type alpha collagen fibronectin mrna levels nephritic rats results indicate honokiol may therapeutic potential mesangial proliferative
glucocorticoids gcs induce apoptosis lymphoid lineage cells therefore used therapy acute lymphoblastic leukemia related malignancies micrornas mirnas related mirtrons similar nucleotide rnas derived polymerase transcripts implicated control essential biological functions including apoptosis whether gcs regulate mirna encoding transcription units unknown investigated mirna mirtron expression regulation leukemia lymphoma vitro models children undergoing systemic monotherapy using combination expression profiling techniques real time reverse transcription pcr northern blotting detect mature mirnas precursors found mature mirna regulations inferred expression data host genes although simple mirna initiated canonical pathway induced apoptosis cell cycle arrest emerge identified several mirnas mirtrons regulated patients cell lines including myeloid specific mir apoptosis cell cycle arrest inducing mir similar clusters vitro model overexpression mirb similar mimics increased silencing mirb similar inhibitors decreased sensitivity thus observed complex changes mirna mirtron expression treatment might contribute anti leukemic effects cell context dependent manner
glutathione peroxidase gpx glutathione reductase key enzymes antioxidant defense systems living organisms protect organisms environmental stresses investigate mechanism resistance heat stress red alga gracilaria lemaneiformis cdna sequences encoding glutathione peroxidase glutathione reductase two strains wild type heat tolerant cultivar lemaneiformis successfully cloned using reverse transcription pcr rapid amplification cdna ends techniques cdna encoding gpx nucleotides open reading frame orf nucleotides encoding amino acid residues cdna encoding nucleotides nucleotide orf encoding amino acids introns existed genomic dna gpx lemaneiformis southern blotting indicated one copy gpx strains heat stress bioactivity mrna transcription levels gpx upregulated cultivar compared wild type results indicate gpx may play important roles ability lemaneiformis resist high temperatures
glycan conversion glycoprotein via transglycosylation activity endo beta acetylglucosaminidase promising chemoenzymatic technology production glycoproteins including bio medicines homogeneous glycoform although endo key enzyme process product undergoes rehydrolysis leads lower yield limits practical application enzyme developed several endo mutant enzymes including glycosynthase like activity transglycosidase like activity found endo mutant showed glycosynthase like activity comparable well transglycosidase like activity superior using natural sialylglycopeptide donor substrate readily transferred sialo glycan onto acetylglucosamine residue attached bovine ribonuclease rnase yielding nonnative sialoglycosylated rnase results demonstrate use endo alternative glycoengineering technique provides relatively high yield transglycosylation product avoids laborious synthesis sugar oxazoline donor substrate international union biochemistry molecular biology inc volume number pages
glycated hemoglobin determination multicapillary zone electrophoresis mze additionally used detect common hemoglobin variants assessed effectiveness method detecting thalassemia thal thalassemia thal common variants moreover evaluated index discriminating thal traits theoretical thalassemia major birth rate healthcare area calculated contrasted real data mze technique used measurements patients previous criteria carrier detection established subsequently confirmed molecular biology techniques positive predictive value ppv prevalence thal trait including thal prevalent mutations estimated per population hbb hbb hbb hbb hbb dela thalassemias hbb baltimore hbb variants found paradoxical result theoretical birth rate real data calculated optimal index cutoff discriminating thal traits method highly cost effective detecting thalassemias common variants prevalence results match previous data spanish population heterogeneity mutations spain markedly increased consequence migration index cutoff could used predict thal trait
gorham stout disease gsd rare condition osteolysis excessive lymphangiogenesis within bone tissue etiology condition remains unknown seems affect mainly children young adults genders world unfortunately standardized method diagnosis however histopathology remains gold standard condition often misdiagnosed due varying clinical presentations case case report case year old girl presented chronic mandibular pain mastication received multiple antibiotic treatment due infectious origin suspicion integrating information clinical manifestations radiographic laboratory histopathology information diagnosed gsd additionally due lack literature respect insights biological mechanisms standardized treatment condition underwent literature revision provide information related activation cells immune system macrophages cells dendritic cells contribution lymphangiogenesis angiogenesis osteoclastogenic process gsd important consider mechanisms patients gsd especially since new studies performed earlier stages required confirm use novel diagnostic tools find new possibilities treatment
group rotaviruses rvas primary cause acute gastroenteritis age young children worldwide several commercial tests including latex agglutination enzyme linked assays elisa immunochromatographic tests ict developed diagnosis rva infection present study performance two commercially available one step chromatographic immunoassays certest rotavirus adenovirus biotec zaragoza spain vikia rota adeno biomerieux lyon france retrospectively evaluated using real time pcr reference test testing real time pcr stool samples children hospitalized age previously screened icts certest vikia allowed calculate higher sensitivity vikia certest higher specificity certest vikia accordingly higher positive predictive values positive likelihood ratios found certest lower negative predictive values negative likelihood ratios vikia however certest vikia showed substantial agreement real time pcr correlation false negative results icts high cycle threshold values real time pcr indicative low viral load observed false positive results two ict assays related norovirus adenovirus astrovirus infections therefore risk cross reactions excluded certest vikia able detect wide range rva genotypes circulating study period including results present study showed satisfactory efficacy two diagnostic tests analyzed elsevier rights reserved
gut microbiota produced short chain fatty acids scfas play important role normal human metabolism physiology although gradients scfas large intestine largely produced peripheral blood well main routes sofa metabolism different organs known well healthy state paucity information regarding affected disease particular inflammation caused infection autoinflammatory disease affect concentration scfas peripheral venous blood work revealed diseases caused either infectious agents two salmonella enterica serovars enteritidis typhimurium exacerbation autoinflammatory disease familial mediterranean fever fmf result significantly elevated systemic concentration scfas case salmonellosis concentration scfas peripheral blood significantly consistently higher fold compared control case fmf however significant increase scfas peripheral venous blood detected acute phase disease lesser impact remission seems counterintuitive dysbiotic conditions reduced number gut microorganisms produce effect phenomenon however must appraised within context inflammatory diseases affect normal physiology discuss number factors may contribute leak persistence gut produced scfas systemic circulation infectious autoinflammatory diseases
harnessing immune system fight cancer exciting advancement lung cancer therapy antitumor immunity augmented checkpoint blockade therapy removes inhibition brakes imposed immune system tumor checkpoint blockade therapy anti programmed cell death protein anti anti programmed death ligand anti pdl antibodies causes tumor regression patients lung cancer another approach immune system forced accelerated attack tumor augmentation antitumor response mutations carried lung tumor latter approach become feasible since advent next generation sequencing technology allows identification specific mutations individual lung tumor bears indeed lung cancers known high mutation rates making logical targets mutation directed immune therapies review sequencing lung cancer mutations leads better understanding immune system recognizes tumors providing improved opportunities track antitumor immunity ultimately leading development personalized vaccine strategies aimed unleashing host immune system attack mutations tumor
heart failure complex clinical syndrome resulting diverse primary secondary causes shared pathways disease progression correlating substantial mortality morbidity cost children commonly attributable coexistent congenital heart disease different risks depending specific type malformation current management therapy children extrapolated treatment approaches adults review discusses causes epidemiology manifestations children congenital heart disease presents clinical genetic molecular characteristics similar distinct adult objective review provide framework understanding rapidly increasing genetic molecular information challenging context detailed phenotyping review clinical translational research studies congenital heart disease including genome transcriptome epigenetic levels unresolved issues directions future study presented
heat shock factor hsf transcription factor often described master regulator heat shock response eukaryotes however due essentiality yeast hsf contribution transcriptome basal heat shock conditions never directly determined using chemical genetics approach allowed rapid hsf inactivation colleagues recently shown bulk heat shock response hsf independent rather inducing genes responsible carrying various cellular processes required adaptation thermal stress hsf controls dedicated set chaperone protein genes devoted restoring protein folding homeostasis limited scope hsf regulon belies outsize importance cellular fitness
helper cell development function must tightly regulated induce appropriate immune response eliminates specific pathogens yet prevents autoimmunity many approaches involving different model organisms utilized understand mechanisms controlling helper cell development function however studies using mouse models proven highly informative due availability genetic cellular biochemical systems one genetic approach mice used many labs involves retroviral transduction primary helper cells powerful approach due relative ease making accessible almost laboratory basic skills molecular biology immunology therefore multiple genes wild type mutant forms readily tested function helper cells understand importance mechanisms action optimized approach describe protocols production high titer retroviruses isolation primary murine helper cells transduction retroviruses differentiation toward different helper subsets finally use approach described uncovering mechanisms utilized micrornas mirnas regulate pathways controlling helper cell development function
hemigrapsus sanguineus asian shore crab rapidly replaced carcinus maenas green crab abundant crab rocky shores northwest atlantic since introduction united states usa northern edge progressing invasion gulf maine asian shore crabs abundant south compared sanguineus population densities published surveys quantified genetic variation using cytochrome oxidase subunit gene found range sanguineus extended northward since population density increased substantially least fold sites asian shore crabs become dominant intertidal crab species new hampshire southern maine despite significant increase population density sanguineus populations increased factor maine compared southern new england possibly due cooler temperatures gulf maine genetically populations predominantly composed single haplotype japanese korean taiwanese origin although additional seven haplotypes found six haplotypes asian origin two newly described large increases population sizes genetically diverse individuals maine likely large ecological impact causing reduction populations mussels barnacles snails crabs similar occurred southern sites large populations invasive crab species
hepatitis virus hev viral pathogen transmitted primarily via fecal oral route humans hev mainly causes acute hepatitis responsible large outbreaks hepatitis across world case fatality rate hev induced hepatitis ranges young adults infected pregnant women hev strains infecting humans classified four genotypes hev strains genotypes zoonotic whereas genotypes known animal reservoirs recently notable progress accomplished better understanding hev biology infection chronic hev infection vitro cell culture system quasi enveloped hev virions functions hev proteins mechanism hev antagonizing host innate immunity hev pathogenesis vaccine development however investigation cross species hev infection host tropism vaccine efficacy hev specific antiviral strategy still needed review mainly focuses molecular biology infection hev offers perspective new insight enigmatic virus
herpesviruses establish chronic infection host characterized intervals lytic replication quiescent latency reactivation latency murine gammaherpesvirus mhv naturally infects small rodents genetic biologic parallels human gammaherpesviruses ghvs kaposi sarcoma associated herpesvirus epstein barr virus murine gammaherpesvirus model pathogen system provides platform apply cutting edge approaches dissect interplay gammaherpesvirus host determinants enable colonization host shape latent lytic fate infected cell knowledge critical development novel therapeutic interventions oncogenic ghvs nuclear factor kappa nfkb signaling pathway well known role promotion inflammation many aspects cell biology review key aspects virus lifecycle host emphasis route virus takes gain access cell latency reservoir highlight murine gammaherpesvirus requires components signaling pathway promote replication latency establishment maintenance latency studies emphasize complexity gammaherpesvirus interactions signaling components direct innate adaptive immune responses host importantly multiple facets signaling identified might targeted reduce burden gammaherpesvirus associated diseases
high metabolic activity low levels antioxidant enzymes make neurons particularly prone damage reactive oxygen species thus repair oxidative dna damage essential normal brain function base excision repair major pathway repair oxidative dna damage initiated dna glycosylases recognizing removing damaged base mammalian cells least five different dna glycosylases overlapping substrate specificity neil neil neil ogg nth remove oxidative dna base lesions report mrna expression distribution five dna glycosylases human rodent brains using situ hybridization northern blotting supported glycosylase activity assays neil neil ogg nth showed widespread expression ages situ hybridization studies mouse brain showed expression mneil increased age newborn mouse brain mneil revealed discrete expression pattern brain regions known harbour stem cell populations subventricular zone rostral migratory stream hilar region hippocampal formation expression mneil decreased age old mice brains could detected layer neocortex mnth constitutively expressed lifespan northern blots mogg expression showed transient decrease followed increase weeks age assays fapy dna glycosylase activity revealed increased activity level age brain regions analyzed
high throughput screening hts currently mainstay identification chemical entities capable modulating biochemical reactions cellular processes advancement biotechnologies high translational potential small molecules number innovative approaches drug discovery evolved explains resurgent interest use hts oncology field currently active research area drug screening major breakthrough made identification new immunomodulatory compounds targeting transplantation related complications autoimmune ailments present novel vitro murine fluorescent based lymphocyte assay easily adapted identification new immunomodulatory compounds assay uses cells derived transgenic mouse nur promoter drives gfp expression upon cell receptor stimulation gfp intensity reflects activation transcriptional activity target cell assay defines novel tool study effect given compound cellular biological responses instance primary screening performed using compounds absence target hypothesis led identification potential hits displaying immunomodulatory activities thus use assay suitable drug discovery programs exploring large chemical libraries prior vitro vivo validation studies
hla differs hla single nucleotide substitution position
hop powdery mildew hpm caused podosphaera macularis wallr braun takam results significant losses hop production reducing yield quality one means increasing yield quality production resistant hop lines breeding resistance significantly improved accelerated use marker assisted selection objective preliminary study identify qtls markers genetic resistance hpm parental mapping population resistant line newport susceptible line phenotypic data scored controlled greenhouse conditions significant differences among offspring observed disease resistance follow distinct binomial distribution suggesting quantitative genetic control genotyping sequencing resulted approximately snp markers filtered markers mapped linkage groups interval mapping identified four qtls one linkage group three located linkage group composite interval mapping identified three qtls located linkage group mixed linear models identified markers associated expression resistance hpm three snps also identified qtl cim analysis evaluation scaffolds containing significant snp markers identified seven putative genes several appear involved disease resistance plant species snp markers identified study still require validation unrelated populations prior implementation breeding programs
human oxoguanine dna glycosylase ogg excises mutagenic oxidative dna lesion oxo dihydroguanine oxog dna kinetic characterization ogg undertaken measure rates oxog excision product release ogg concentration lower substrate dna time courses product formation biphasic rapid exponential phase burst product formation followed linear steady state phase initial burst product formation corresponds concentration enzyme properly engaged substrate burst amplitude depends concentration enzyme first order rate constant burst corresponds intrinsic rate oxog excision slower steady state rate measures rate product release product dna dissociation rate constant describe steady state pre steady state single turnover approaches isolate measure specific steps ogg catalytic cycling fluorescent labeled lesion containing oligonucleotide purified ogg used facilitate precise kinetic measurements since low enzyme concentrations used make steady state measurements manual mixing reagents quenching reaction performed ascertain steady state rate additionally extrapolation steady state rate point ordinate zero time indicates burst product formation occurred first turnover intercept positive first order rate constant exponential burst phase measured using rapid mixing quenching technique examines amount product formed short time intervals approaches measure elementary rate constants influence efficiency removal dna lesion
human biomonitoring hbm dose biochemical effect nowadays tremendous utility providing efficient cost effective means measuring human exposure chemical substances hbm considers routes uptake sources relevant making ideal instrument risk assessment risk management hbm identify new chemical exposures trends changes exposure establish distribution exposure among general population identify vulnerable groups populations higher exposures identify environmental risks specific contaminated sites relatively low expenditure sensitivity hbm methods moreover enables elucidation human metabolism toxic mechanisms pollutants hbm tool scientists well policy makers blood urine far approved matrices hbm done chemical substances focus worldwide discussion environmental medicine especially applies metals pah phthalates dioxins pesticides well aromatic amines perfluorinated chemicals environmental tobacco smoke volatile organic compounds protein adducts especially adducts surrogates dna adducts measuring exposure well biochemical effect specifically sensitively still better means estimate cancer risk measuring genotoxic substances metabolites human body fluids using sophisticated nevertheless routinely applicable analytical procedures adducts alkylating agents aromatic amines nitro aromatic compounds determined routinely today extend spectrum biochemical effect monitoring methods elaborated put cleavage separation adducted protein molecules measure sample preparation way sites adduction well proteins like serum albumin could used hbm dna adducts indicate mutagenicity chemical substance well elevated cancer risk dna adducts therefore would ideal parameters hbm though sensitive techniques dna adduct monitoring like postlabelling immunological methods lack specificity elucidating mechanism carcinogenesis broad applicability comparability epidemiological studies analytical methods must elaborated strictly specific chemical structure dna adduct current analytical possibilities however meet borders hbm studies exposure genotoxic chemicals especially measurement dna strand breaks lymphocytes hydroxy deoxyguanosine ohdg white blood cells become popular however still lack well established dose response relations occupational environmental exposures induction ohdg formation strand breaks limits applicability markers biomarkers used population studies covered standard operating procedures sops well internal external quality assessment schemes therefore hbm results leading laboratories worldwide analytically reliable comparable newly upcoming substances environmental relevance like perfluorinated compounds rapidly assessed body fluids getting difficult laboratories keep progress instrumental analyses spite pay reach ultimate summit hbm nly way identify quantify human exposure risk elucidate mechanism toxic effects ultimately decide measures taken reduce exposure risk assessment risk management without hbm lead wrong risk estimates cause inadequate measures countries like usa germany thousands inhabitants regularly investigated respect internal exposure broad range environmentally occurring substances evaluation hbm results german hbm commission elaborates reference hbm values elsevier gmbh rights reserved
human case studies reported association green tea based dietary supplements hepatotoxicity studies demonstrated hepatotoxicity high dose oral bolus dosing tea polyphenol epigallocatechin gallate egcg mice dogs examined effect pretreatment dietary egcg hepatotoxicity bioavailability acute oral bolus dosing egcg mice egcg daily days increased plasma alanine aminotransferase fold decreased reduced total hepatic glutathione increased hepatic levels phosphorylated histone pretreatment dietary egcg diet weeks mitigated hepatotoxicity acute oral egcg also decreased mrna expression glutathione reductase dietary pretreatment prevented decreased increased glutathione peroxidase gpx gpx gpx gpx expression found dietary egcg reduced plasma reduction hepatic reduction egcg exposure following oral bolus dosing compared mice pre treated overall appears egcg modulate bioavailability dietary treatment may reduce toxic potential acute high oral bolus doses egcg data may partly explain observed variation hepatotoxic response green tea containing dietary supplements elsevier ltd rights reserved
human foamy virus hfv complex unique retrovirus longest genomes among retroviruses used vectors gene therapy long non coding rnas lncrnas regarded key regulators involved diverse biological processes viral infection however role lncrnas hfv infection remains unknown study utilized next generation sequencing first characterize lncrnas cells hfv infection evaluating length distribution exon number distribution volcano picture lncrna class distribution identified lncrnas upregulated lncrnas regulated lncrnas mrnas upregulated mrnas downregulated mrnas differentially expressed hfv infected cells subsequently six differentially expressed lncrnas characterized using rna seq confirmed quantitative real time polymerase chain reaction assays interestingly gene ontology gene ontology tree machine gotm kyoto encyclopedia gene genomes kegg pathway analyses indicated positive regulation interleukin production cytokine cytokine receptor interaction might involved functional enrichment lncrnas moreover cis acting trans acting regulatory networks show may target fas gene cis acting manner enst may target gene trans acting manner overall results provide novel insights relationship hfv lncrnas host response infection also implications future wider application hfv vector
human lactate dehydrogenase ldh attracted attention potential target cancer therapy contraception study reconstituted human lactic acid fermentation saccharomyces cerevisiae goal constructing yeast cell based ldh assay system pdc null mutant yeast mutated endogenous pyruvate decarboxylase genes unable perform alcoholic fermentation grown presence electron transport chain inhibitor pdc null strains exhibit growth defect found introduction human gene encoding ldha complemented pdc growth defect complementation depended ldha catalytic activity similarly introduction human ldhc complemented pdc growth defect even though ldhc generate lactate levels seen ldha contrast human ldhb complement yeast pdc null mutant although ldhb generate lactate yeast cells expression ldhb red fluorescent protein rfp fusion yielded blebs yeast whereas ldha rfp ldhc rfp fusion proteins exhibited cytosolic distribution thus ldhb exhibits several unique features expressed yeast cells yeast cells amenable genetic analysis cell based high throughput screening pdc ldh strains expected use versatile analyses human ldh
human metabolism insecticide propoxur yields isopropoxyphenol ipp excreted conjugated urine publication sensitive selective analytical method described permits determination ipp suitable parameter biomonitoring clean hydrolysed urine samples consisted steam distillation solid phase extraction using reversed phase column ipp internal standard ethoxyphenol converted pentafluorobenzyl ethers excess derivatisation reagent removed using deactivated silica gel separation quantitative analysis carried capillary gas chromatography mass selective detection coefficients variation concentrations detection limit method checked analysing six urine samples pest controllers indoor application propoxur ipp concentrations ranged creatinine ipp detected urine specimens non exposed persons sensitivity developed method permits detection latent exposure propoxur elsevier science rights reserved
human phase enzymes isoforms metabolize pesticides listed database updated periodically initial version includes enzymes isoforms metabolize organophosphorus insecticides chloroacetamide herbicides triazine herbicides john wiley sons inc
human renal cell carcinoma hrcc characterized high level resistance treatment modalities therefore investigation global gene expression hrcc might help understand biologic behavior develop treatment strategies using cdna microarray analysis initially compared gene expression profiles hrccs adjacent normal tissues found regulated genes regulated next subset genes twofold differentially expressed validated northern blotting unexpectedly caveolin gene reported tumor suppressor gene found regulated hrcc tissues expression level caveolin sncpm high metastatic clone higher snc low metastatic clone sncpm resistant doxorubicin dxr snc caveolin gene slightly induced surviving snc cells dxr treatment furthermore sncpm sicav cells transfected sirna cavelon gene sensitive dxr compared sncpm reduction caveolin gene expression affect tumor formation subcapsule kidney lung metastasis hand induction caveolin gene affected production lung metastasis anti cancer drug treatment incidence pulmonary metastasis significantly lower scid mice injected sncpm sicav cells number pulmonary nodules decreased significantly results together suggest caveolin may confer growth advantage cancer cells dxr chemotherapy surviving hrcc cells eventually might develop lung metastasis
hydroxy fas one gut microbial metabolites pufas attracted much attention various bioactivities purpose study identify lactic acid bacteria ability convert linoleic acid hydroxy fas screening process revealed gut bacterium lactobacillus acidophilus ntv converts mainly hydroxy cis octadecenoic acid resulted identification hydratase responsible fatty acid hydratase recombinant purified enzymatic characteristics investigated could convert pufas also pufas pufas cis carbon carbon double bond delta position converted corresponding hydroxy fas arachidonic acid dha converted corresponding hydroxy hydroxy respectively best knowledge first report bacterial hydratase convert pufas corresponding hydroxy fas novel hydroxy fas produced using contribute elucidating bioactivities hydroxy fas
hypersensitive response form programmed cell death pcd primary immune response prevents pathogen invasion plants show microrna mir target gene nac atg encoding nac transcription factor play essential roles regulation pcd arabidopsis thaliana cell death symptoms noticeably enhanced nac overexpressing nac mir mutant plants response avirulent bacterial pathogens nac expression induced pathogen infection negatively regulated mir expression nac binding dna sequences determined vitro binding site selection using random oligonucleotide sequences microarray chromatin immunoprecipitation quantitative real time polymerase chain reaction qrt pcr analyses followed cell death assays protoplasts led identification nac target genes lurp wrky wrky act negative regulators cell death results suggest nac promotes hypersensitive cell death suppressing target genes immune process fine tuned negative action mir
iloperidone novel atypical antipsychotic compound currently clinical development treatment psychotic disorders radioligand binding studies iloperidone binds high affinity serotonin hta noradrenaline alpha alpha receptors neuropsychopharmacology human metabolism iloperidone generates two major metabolites aim study compare receptor affinity profile parent compound receptor affinity profile comparable iloperidone metabolite binds following monoamine receptors values scrotonin hta receptors adrenergic alpha alpha receptors receptors lower affinity seen dopamine scrotonin alpha adrenergic histamine receptors contrast shows affinity hta receptors fold lower iloperidone adrenergic alpha alpha alpha receptors given affinity profile observation readily cross blood brain barrier unlikely metabolite contributes therapeutic effect iloperidone patients schizophrenia however comparable receptor binding profile indicates likely contribute clinical profile iloperidone elsevier science inc rights reserved
immunoglobulin therapy key element management patients primary immunodeficiency disease allergist immunologists familiar appropriate evaluation candidates immunoglobulin characteristics immunoglobulin products use provide best care patients available immunoglobulin products appear equally efficacious interchangeable minimizing risk serious adverse events controlling minor side effects important ideal patient care immunoglobulin may administered intravenously subcutaneously individualizing choice immunoglobulin product mode administration site care optimize clinical outcome minimize burden care american academy allergy asthma immunology
immunohistochemistry ihc immunofluorescence two often used tools researches tissue morphology cell biology order demonstrate sensitive detection paraffin embedded tissues pet compared detection rate two methods human pancreatic tissue microarrays tma using three anti human insulin antibodies results showed detection rates mostly depending primary antibody chosen primary abs significant differences ihc pet tissues primary contrast primary abs detection rate much lower ihc pet tissues interestingly detection rate increased sections stained procedure ihc addition results also showed ihc method executable method finished pet tissues hardly execute dab staining ihc method completed conclude whether ihc method applicable pet tissues largely depend primary abs chosen also found ihc method still executable method finished pet tissues
immunology science biological warfare defenses immune systems offensive pathogenic microbes cancers course scientific career eckhard podack made several seminal discoveries elucidated key aspects warfare molecular level eckhard joined complement laboratory muller eberhard fascinated two questions molecular mechanism complement kills invasive bacteria one complement components killer molecule eckhard quest answer questions would lead discovery later two additional pore forming killer molecules immune system brief account discovered poly pore forming protein complement blood interstitial fluids perforin expressed natural killer cells cytotoxic lymphocytes perforin mpeg expressed cell types examined date three killing systems crucial survival health
sharp described new autoimmune rheumatic disease called mctd characterized overlapping features ssc sle high levels anti usnrnp low steroid requirements good prognosis mctd proposed distinct disease however soon original description questions existence syndrome well disputes features initially described began surface conundrum whether mctd distinct disease entity remains controversial undertook literature review focusing articles reporting new data mctd published last decade determine whether new observations help answer conundrum mctd reviewing recent data question whether term mctd appropriately retained preferring use term undifferentiated autoimmune rheumatic disease
canine influenza emerged dogs greater chicago area time year old german shepherd dog presented referring veterinarian lethargy coughing quickly progressed death report describes macroscopic microscopic lesions molecular testing performed identify novel north american strain canine influenza larynx pharynx trachea covered fibrinonecrotic membrane bilaterally lungs multifocal subpleural necrosis caudal lung lobes hemorrhage congestion pulmonary edema staphylococcus pseudointermedius isolated lung mycoplasma cynos identified real time polymerase chain reaction nasal passages oropharynx larynx trachea cranial lung lobes neuraminidase gene sequence influenza virus isolated obtained dog homology strain circulating chicago area
bacteria control mrna stability crucial allow rapid adaptation changing conditions bacteria rna degradation catalyzed rna degradosome protein complex composed endo exoribonucleases rna helicases accessory proteins gram positive model organism bacillus subtilis existence rna degradosome assembled around membrane bound endoribonuclease rnase proposed studied intracellular localization protein implicated potential subtilis rna degradosome polynucleotide phosphorylase exoribonucleases dead box rna helicase csha glycolytic enzymes enolase phosphofructokinase data suggests bulk enzymes located cytoplasm rnases well rna helicase csha mainly localized peripheral regions cell also bulk messenger rna localized able demonstrate active exclusion proteins transcribing nucleoid taken together findings suggest interactions enzymes involved rna degradation subtilis rather transient
humans brain accounts body free cholesterol synthesized novo brain maintain cholesterol balance throughout life cholesterol becomes metabolized hydroxy cholesterol principally neurons mouse rat probably human metabolism hydroxycholesterol accounts cholesterol turnover however route remainder turned yet elucidated describe novel liquid chromatography multistage fragmentation mass spectrometry msn methodology identification high sensitivity low cholesterol metabolites rat brain methodology includes derivatization enhance ionization exact mass analysis high resolution identify potential metabolites msn allow characterization hydroxycholesterol confirmed major oxysterol rat brain oxysterols identified first time brain included alpha alpha dihydroxycholesterols addition beta hydroxy oxo secocholestan aldol two molecules linked amyloidogenesis proteins characterized rat brain
order gain mechanistic insights multiple sclerosis pathogenesis utilized multi dimensional approach test hypothesis mutations myelin proteins lead immune activation central nervous system autoimmunity mass spectrometry based proteomic analysis human brain lesions revealed seven unique mutations plp key myelin protein known destroyed surprisingly depth genomic analysis two patients genomic dna mrna confirmed mutated plp rna genomic dna quantification wild type mutant plp rna levels qpcr validated presence mutant plp rna patients seek evidence linking mutations abundant myelin proteins immune mediated destruction myelin specific immune response mutant plp patients examined thus designed paired wild type mutant peptide microarrays examined antibody response multiple mutated plp sera patients consistent idea different patients exhibiting unique mutation profiles found patients showed antibody responses specific mutant plp peptides interestingly found mutant plp directed antibody response specific mutant peptides sera pre controls results integrative proteomic genomic immune analyses reveal possible mechanism mutation driven pathogenesis human study also highlights need integrative genomic proteomic analyses uncovering pathogenic mechanisms human diseases
patients lynch syndrome gynecologic cancer often first presenting malignancy review summarize genetics lynch syndrome review various modalities identifying patients risk syndrome clinical characteristics lynch associated endometrial cancer screening risk reducing strategies also described
plants low temperatures activate cbf cold response pathway playing prominent role cold acclimation triggering set cold related gene expressions cbf homologous gene designated lpcbf cold tolerant perennial ryegrass lolium perenne accession identified carries sequences nuclear localization signal nls dna binding domains acidic activation present plant cbf proteins southern analysis indicated presence three homologs lpcbf gene perennial ryegrass genome one amino acid variation lpcbf protein cold tolerant sensitive perennial ryegrass accessions putative promoter regions differential regions found northern blotting pcr analysis found lpcbf reached highest expression cold treatment cor homologous gene downstream gene cbf expressed plant stem cold tolerant perennial ryegrass accessions without cold treatment without cold treatment cor gene activated cold sensitive perennial ryegrass accessions cold treatment prompt expression levels cor homologous genes perennial ryegrass accessions transgenic arabidopsis overexpression lpcbf promoter resulted dwarf like plants later flowering greater freezing tolerance
preparation vaccine trials hiv genetic diversity surveyed cohort development study form retrospective prospective observational study around town mbeya tanzania southwest highlands study describes molecular epidemiology hiv strains obtained incident hiv infections identified three subpopulations participants one rural two urban mbeya area near full genome half genome sequencing showed subtype distribution inter subtype recombinants compared viral subtyping results previously obtained retrospective phase study overall proportion incident viral strains change greatly study course suggesting maturity epidemic comparison current phase vaccine tested africa shows similar amino acid sequence difference vaccine subtype incident strains phylogenetic recombinant breakpoint analysis incident strains revealed emergence crf many unique recombinants well presence six local transmission networks confined rural subpopulation context vaccine cohort selection results suggest distinct infection transmission dynamics within three geographically close subpopulations diversity genetic sequences hiv strains obtained study greatly contribute planning immunogen selection analysis vaccine induced immune responses observed hiv vaccine trials tanzania neighboring countries
present work nanocrystals zeolites employed sensing interface augmented electrochemical sensing antiepileptic drug leviteracetum lev electrochemical sensing method developed depositing nanocrystals zeolites horseradish peroxidase nanocrys zeolites hrp onto indium tin oxide ito coated glass surface lev detection various stages biosensor fabrication characterized transmission electron microscopy ray diffraction scanning electron microscopy electrochemical impedance spectroscopy fabricated nanocrys zeolites hrp modified sensor exhibited wide linear range low detection limit biosensor also showed short response time within addition biosensor exhibited high reproducibility good storage stability anti interference ability applicability nanocrys zeolites hrp modified sensor determine lev level spiked serum samples wiley periodicals inc american pharmacists association pharm sci
recent decades number hypotheses autotrophic origin life presented proposals invoke emergence reaction networks leading organic molecules required life also suggested last universal common ancestor lca luca extant cell lineages chemolitho autotrophic thermophilic anaerobe antiquity carbon fixation pathways phylogenetic basal distribution autotrophic organisms catalytic properties iron sulfur minerals advanced support ideas critically examine phylogenetic distribution evolution enzymes essential two ancient autotrophic means metabolism reductive tricarboxylic acid rtca cycle reductive acetyl coa pathway phylogenetic analysis citryl coa synthetase citryl coa lyase key enzymatic components rtca cycle dehydrogenase acetyl coa synthase key enzyme reductive acetyl coa pathway revealed three enzymes undergone major lateral transfer events therefore used proof lca metabolic abilities evidence autotrophic origin life
recent years molecular biology proven great asset understanding mechanisms genodermatoses however bench bedside translation research lags far behind advances lab chip technologies enabled programmable reconfigurable scalable manipulation variety laboratory procedures sample preparation microfluidic reactions continuous monitoring systems integrated small chip advantages attracted attention various fields clinical application including diagnosis inherited skin diseases review lists overview underlying genes mutations describes prospective application lab chip technologies solutions challenges point care genodematoses diagnosis published elsevier ireland ltd behalf japanese society investigative dermatology
recent years disposal former industrial sites widely become key subject interest terms remediation order promote different use community use biological processes phytoremediation worldwide discussed varying success study applied integrated phytoremediation system ips represents cost effective system environmentally friendly socially accepted removal risks associated contamination heavy metal unsaturated soils combination suitable agronomic soil management biostimulation plant growth inoculation rhizosphere microbes allowed increase biomass production selected plant species acacia saligna eucalyptus camaldulensis stressful conditions consequently promote phytoremediation contaminants experimental study situ revealed significant positive aptitude selected plant species keep ptes potential toxic elements root system restricted translocation aboveground parts plant fungi bacteria system rhizosphere level showed also strong ability remove bioavailable fraction contaminants considerable reduction risks associated contamination study reveals application integrated phytoremediation system ips permits reach soil remediation years economically socially environmentally sustainable costs elsevier rights reserved
recent years particular emphases worldwide development optimization bioprocesses utilization biomass essential component biomass processing conduit need robust biocatalysts high performance tools depolymerization lignocellulosic biomass synthesis new high value bio based chemical entities functional screening metagenome hindgut bacterial symbionts termite trinervitermes trinervoides discovered open reading frames cellulases hemicellulases classified different glycoside hydrolase families eight family four two one families eight overexpressed partially characterized shown endocellulases ghc ghe ghf ghg exocellulase ghd endoxylanases ghh alpha fucosidase xyl particular interest discovered multimodular beta xylanase consisting catalytic domain two carbohydrate binding modules cbms cbm functions selectively bind insoluble xylan increases rate hydrolysis primary structure showed classical catalytic dyad glutamic acid residues generally forms part active site enzyme family endoxylanase optimal degrees generated xylobiose xylotriose various xylan sources including beechwood birchwood wheat arabinoxylan catalytic ability natural substrate wheat arabinoxylan renders potential useful biocatalyst effective dismantling complex plant biomass architecture international union biochemistry molecular biology inc
screening potent antimicrobial proteins amps plant seeds purified heat stable amp ljamp seeds medicine herb motherwort leonurus japonicus houtt vitro assay protein inhibit growth fungi bacteria cdna encoding ljamp cloned rapid amplification cdna ends based terminal amino acid sequence determined deduced amino acid sequences cdna show similarity plant non specific lipid transfer proteins northern blotting assay revealed nsltp like gene designated ljamp expressed seeds overexpression ljamp tobacco enhanced resistance fungal pathogen alternaria alternata bacterial pathogen ralstonia solanacearum significantly visible alteration plant growth development data confirm antifungal antibacterial function ljamp motherwort seeds suggest potential ljamp improving disease resistance plants
last decade bioinformatic analyses high throughput proteomics transcriptomics data enabled researchers gain insight molecular networks may underlie lasting changes synaptic efficacy development utilization techniques advanced field learning memory significantly possible move study activity dependent changes single protein modeling entire network changes require local protein synthesis data revolution necessitated development alternative computational statistical techniques analyze understand patterns contained within thus focus review provide synopsis journey evolution toward big data techniques address still unanswered questions regarding synapses modified strengthen neuronal circuits first review seminal studies demonstrated pivotal role played local mrna translation mechanism underlying enhancement enduring synaptic activity interest new field provide brief overview molecular biology biochemical techniques utilized sample preparation identify locally translated proteins using rna sequencing proteomics well computational approaches used analyze data many mrnas identified shown locally synthesized end review techniques currently utilized visualize new protein synthesis task proven difficult aspect field finally provide examples future applications test physiological relevance locally synthesized proteins identified big data approaches
past decade power harnessing cell signaling pathways become increasingly understood significant clinical importance cancer immunotherapy field concentrated two related modalities first targeting cancer antigens highly activated chimeric antigen cells car second animating endogenous quiescent cells checkpoint blockade strategies therapeutic goal ignite cell immunity order eradicate tumors transplantation also great interest targeting cell signaling opposite goal field seek yin cancer immunotherapy yang focus manipulating cell signaling induce tolerance rather activation review discuss major cell signaling pathways investigated tolerance induction detailing preclinical studies path clinic many molecules include blockade stimulation pathways agonism coinhibitory pathways order achieve delicate state balance transplant tolerance state guarantees lifelong transplant acceptance without ongoing immunosuppression preservation protective immune responses context clinical translation immune tolerance strategies discuss significant challenge embodied fact targeted pathway modulators may opposing effects tolerance based impact effector regulatory cell biology achieving delicate balance holds key major challenge transplantation lifelong control alloreactivity maintaining otherwise intact immune system
present paper investigate stationary probability distribution spd mean treatment time time delayed cancer growth system induced cross correlated intrinsic extrinsic noises main results show resonant like phenomenon mean first passage time mfpt appears tumor cell growth model due interaction kinds noises time delay due existence resonant like peak value increasing intensity multiplicative noise time delay possible restrain effectively development cancer cells enhance stability system process controlling diffusion tumor cells contributes inhibiting development cancer increasing cross correlated noise strength weakening additive noise intensity time delay meanwhile proper multiplicative noise intensity conducive process inhibition conversely process exterminating cancer cells large density exert positive effects eliminating tumor cells increasing noises intensities value time delay elsevier ltd rights reserved
present study sediment spiked bisphenol bpa solution explore interaction indigenous bacterial communities bpa biodegradation sediment results showed bpa could adsorbed sediment biodegraded rapidly biodegradation efficiency bpa treatments bpa reached first day respectively quantitative polymerase chain reaction denaturing gradient gel electrophoresis analysis indicated bpa affected densities species diversities bacteria significantly response bacterial community bpa favored bpa biodegradation promoting growth bpa reducing bacteria inhibiting competitors according results sequencing pseudomonas sphingomonas played vital roles degradation bpa presented original bacterial community promoted bpa comparing controls laccase polyphenol oxidase contributed degradation bpa metabolic intermediates respectively paper illustrates rapid biodegradation bpa induced response indigenous bacterial communities bpa stress improve understandings bpa degradation sediment
present study reveal first time bactrocera oleae chorion peroxidase bpxd participates essentially oleaechorion formation clearly represents homologous member drosophila melanogaster chorion peroxidase pxd comparative sequence analysis disclosed bpxd cdna semi central region encodes putative catalytic domain enzyme exhibits great homology pxd counterpart thus likely bpxd highly responsible chorion hardening process protein cross linking mediated formation tri tyrosine bonds distinct molecular weight bpxd rna transcripts detected northern blotting analysis total rna extracts adult flies ovaries ovarian specific bpxd rna transcript selectively expressed follicle cell layer late stages oogenesis revealed situ hybridization moreover reverse transcription reactions confirmed stage specific developmental regulation bpxd gene maximally expressed stage western blotting rabbit anti raepo polyclonal antibody revealed three immunoreactive bands kda crude protein extracts adult flies larva purified chorion preparations unique kda band clearly detected immunolocalization experiments revealed bpxd peroxidase constitutes essential structural chorionic component abundantly localized successive chorionic layers vitelline membrane well
seminiferous epithelium testis sertoli cells key niche cells directing proliferation differentiation spermatogonial stem cells sscs spermatozoa sertoli cells produce glial cell line derived neurotrophic factor gdnf essential ssc self renewal progenitor expansion role gdnf testis stem cell niche established little known factor regulated previous studies notch activity sertoli cells demonstrated role pathway limiting stem progenitor cell numbers thus ultimately downregulating sperm cell output study demonstrate double mutant mouse model notch signaling sertoli cells functions solely canonical pathway demonstrate dual luciferase assay chromatin immunoprecipitation quantitative polymerase chain reaction chip qpcr analysis notch targets hes hey transcriptional repressors directly downregulate gdnf expression binding gdnf promoter thus antagonizing effects fsh camp finally demonstrate testicular stem progenitors cells activating notch signaling sertoli cells vivo vitro notch ligand jag surface indicating cells may ensure homeostasis negative feedback regulation
spirit gillespie stochastic approach formulated theory explore advancement interfacial enzyme kinetics single enzyme level ultimately utilized obtain ensemble average macroscopic feature lag burst kinetics provided theory transition lag phase burst phase kinetics considering gradual development electrostatic interaction among positively charged enzyme negatively charged product molecules deposited phospholipid surface shown different diffusion time scales enzyme fluid product regions responsible memory effect correlation successive turnover events hopping mode single trajectory analysis reflected non gaussian distribution turnover times macroscopic kinetics lag phase unlike burst phase kinetics elsevier rights reserved
study host pathogen interactions vaccines drug delivery particulate delivery system widely used mimic pathogen size pattern recognition receptor agonist presentation target cells organs however polymeric systems used particulate delivery inherent inflammatory properties variable nonspecific properties enhance adjuvant activity confound analysis signaling mechanisms present method particle coating minimal background immune activation via passivation surface silica silane show herein silica silane shell passivates polymer particles rendering inert activation innate immune cells method broadly applicable used coat polymeric particles many different compositions method silica silane coating also allows conjugation amine bearing agonists provides controlled variation agonist loading finally demonstrate particles maintain enhance qualities known pathogens making potentially general method improving immune agonist activity
article discuss single molecule observation rotational catalysis coli atp synthase atpase using small gold beads studies involving low viscous drag probe showed stochastic properties enzyme alternating catalytically active inhibited states importance subunit interaction rotor stator thermodynamics catalysis also discussed single molecule enzymology new trend understanding enzyme mechanisms biochemistry physiology iubmb life
contribution review recent nmr studies protonation hydrogen bond states pyridoxal phosphate plp plp model schiff bases different environments starting aqueous solution organic solid state polar organic solution finally enzyme environments established hydrogen bond correlations allow one estimate hydrogen bond geometries chemical shifts shown protonation pyridine ring plp aspartate aminotransferase aspat achieved intermolecular ohn hydrogen bond aspartate residue assisted imidazole group histidine side chain local polarity found related model systems polar organic solvent exhibiting dielectric constant model studies indicate protonation pyridine ring plp leads dominance ketoenamine form intramolecular ohn hydrogen bond plp exhibits zwitterionic state thus plp moiety aspat carries net positive charge considered pre requisite initiate enzyme reaction however shown ketoenamine form dominates absence ring protonation plp solvated polar groups water finally differences acid base interactions aqueous solution interior proteins discussed article part special issue entitled pyridoxal phosphate enzymology published elsevier
paper present simple mathematical model cancer growth model discrete linear map three dimensional eucledian vector space values parameters exists linear vector field three dimensional eucledian vector space whose time one map analyze happens flow vector field one coordinate hyperplanes see fig sect words figure depicts bad ratio growth inhibitor growth factor cancer grows good ratio cancer eradicated modify dynamical system model giving chemo therapy immune therapy discuss consequences fit model predictions gompertz function gives good fit values parameters see figs main topic present paper mass action kinetic model cancer growth gives three dimensional ode model first orthant positively invariant discretize linearization nonlinear ode appropriate parameter definitions recover model sect parameter values model induces two dimensional map plane see sect
paper cotton seed oil deodorizer distillate csodd recovered obtain fatty acid sterol ester fase one biological activated substances added human therapeutic lower cholesterol esterification reactions carried using candida rugosa lipase catalyst conversion phytosterol optimized using response surface methodology highest conversion reached enzyme load solvent csodd mass ratio degrees reaction kinetic model based reaction rate equation developed describe reaction process activation energy reaction calculated mol derived kinetic parameters provided indispensable basics study optimization kinetic research synthesizing fase deodorizer distillate provided necessary information industrial applications near future experimental results showed proposed process promising alternative recycle sterol esters vegetable oil deodorizer distillates mild efficient environmental friendly method international union biochemistry molecular biology inc
review give overview field computational enzymology start describing birth field emphasis work chemistry nobel laureates present key features state art field showing theory accompanied experiments taught far enzymes also briefly describe computational methods quantum mechanics molecular mechanics approaches reaction coordinate treatment free energy simulation approaches finalize discussing open questions challenges authors published elsevier inc
study conserved sequence regions hmgr dxr chs encoding hydroxy methylglutaryl coa reductase deoxyxylulose phosphate reductoisomerase chalcone synthase respectively amplified reverse transcriptase pcr eupatorium adenophorum quantitative real time pcr showed expression chs related level hho allelochemical isolated adenophorum semi quantitative pcr showed significant difference expression genes among three different tissues except chs southern blotting indicated least three chs genes present adenophorum genome full length cdna chs genes named eachs genbank cloned cdna contained open reading frame encoding protein amino acids preliminary bioinformatics analysis eachs revealed eachs member chs family subcellular localization predicted eachs cytoplasmic protein best knowledge first report conserved sequences genes full length eachs gene adenophorum results indicated chs gene related allelopathy adenophorum
study chemical constituents erh tea black tea green tea well erh tea products different ages analyzed compared using chemical profiling approach differences tea processing resulted differences chemical constituents color tea infusions human biological responses erh tea ingestion also studied using ultraperformance liquid chromatography quadrupole time flight mass spectrometry uplc qtofms conjunction multivariate statistical techniques metabolic alterations erh tea ingestion characterized increased urinary excretion hydroxytryptophan inositol methoxyphenylacetic acid along reduced excretion chlorotyrosine creatinine study highlights potential metabonomic technology assess nutritional interventions important step toward full understanding erh tea influence human metabolism
study trends synonymous codons usage volvariella volvecea first examined analysis complete coding sequences gene chip data results showed content three codon positions obviously different several factors shaping codon usage volvacea genes including base composition comparison codon usage among four edible fungi volvacea agaricus bisporus coprinopsis cinerea pleurotus ostreatus indicated similar codon usage pattern used among volvacea bisporus ostreatus significantly different codon usage pattern cinerea two arrays optimal codons determined effective number codons enc values gene chip database separately resulting enc predicted optimal codons included array gene chip resulted optimal codons study provide useful information codon usage pattern analysis gene transformation volvacea international union biochemistry molecular biology inc
traditional microbiology laboratory activities different strains bacteria exposed radiation varying lengths time article provides information expands activities uses alone caenorhabditis elegans model organism study effects radiation activities might used introductory class teach students basics working elegans cell biology microbiology classes students might learn radiation damage cells cause cancer activities also used teach students genetic background affect sensitivity radiation laboratory students design activities altering parameters basic radiation experiment performing laboratory activities students learn radiation parts scientific process
induced pluripotent stem cells ipscs offer unlimited resource cells used study underlying molecular biology disease therapeutic drug screening transplant based regenerative medicine however methods directed differentiation skeletal muscle purposes remain scarce incomplete present novel small molecule based protocol generation multinucleated skeletal myotubes using eight independent ipsc lines combinatorial inhibition phosphoinositide kinase pik glycogen synthase kinase beta gsk beta addition bone morphogenic protein bmp fibroblast growth factor fgf report conversion ipscs myogenic program day indicated myog cell populations cells began exhibit spontaneous contractions early days vitro presence serum free medium formulation used protocol obtain ipsc derived muscle cells frontotemporal dementia ftd patients harboring corf hexanucleotide repeat expansions rggggcc sporadic ftd unaffected controls ipscs derived rggggcc carriers contained rna foci vary differentiation efficiency compared unaffected controls display mislocalized tdp many days vitro study presents rapid efficient transgene free method generating multinucleated skeletal myotubes ipscs resource modeling role skeletal muscle amyotrophic lateral sclerosis motor neuron diseases
inflammation elaborate reflex response body action harmful agents reaction manifests form functional structural changes vascular tissues inflammatory response result human evolutionary process three main stages closely related evolve simultaneously tissue dystrophy alteration impairment blood circulation transudation fluid migration leukocytes multiplication cellular elements proliferation phenomena express disturbance biological activity body tissues defense mechanisms restore damaged areas two interrelated processes often inseparable inflammatory response first pathological process tissue damage form dystrophy necrobiosis necrosis second physiological mechanism defense process recovery physiological response disease manifested exudation phagocytosis proliferation simultaneity processes characteristic inflammatory processes
inherited genetic factors may modulate clinical outcome melanoma low medium risk genes melanoma susceptibility play role melanoma outcome aim assess role functional irf snp melanoma prognosis two independent sets barcelona essen genotype association analyses showed irf allele increased risk dying melanoma sets barcelona odds ratio adj essen adj survival analyses showed significance barcelona set hazard ratio adj snp also associated tumour localization increasing risk developing melanoma head neck adj protecting developing melanoma trunk adj findings suggest first time irf plays role modulation melanoma outcome confirms contribution localization primary tumour
inppf transcriptional variant inppf inositol polyphosphate phosphatase locates distal mouse chromosome paternally expressed imprinted gene mouse study examined spatiotemporal patterns inppf gene mouse development northern blotting analysis revealed one transcript approx inppf detected brain signals observed brain whole mount situ hybridization embryonic day results quantitative real time pcr qrt pcr showed expression inppf increased gradually reached highest decreased brain development inppf gene strongly expressed cerebral cortex olfactory bulb external germinal layer cerebellum ventricular zone embryonic development whereas expression increased olfactory bulb cerebellum birth using situ hybridization results also demonstrated expression inppf gene mainly located olfactory bulb hippocampus postnatal day adulthood results suggest inppf specifically expressed mouse brain may function development mouse brain
insulin degrading enzyme ide zinc metalloprotease known degrade insulin peptide amyloid beta beta key protein involved alzheimer disease considering important role played ide disease progression type diabetes mellitus tdm endeavored identify caenorhabditis elegans elegans ide orthologous genes test role related outcomes employed bioinformatics reverse genetics molecular biology approaches towards identification functional characterization putative ide candidates elegans using silico analysis identified seven elegans genes possess hxxeh motif identifying marker ide carried functional analysis identified genes beta expressing elegans strain myo beta long utr via studying effect beta induced toxicity cholinergic neuroanatomy content acetylcholine acetylcholine esterase extent reactive oxygen species expression foxo transcription factor daf findings reveal amongst identified putative ide orthologs functionally uncharacterized gene profound effect tested endpoints knocking modulated associated conditions decreasing beta induced toxicity severely compromising cholinergic neuroanatomy reducing expression acetylcholine transporter decreasing acetylcholine content elevating ros effect daf stress response protein studies provide crucial insight structural functional orthology ides across human nematode species understanding involvement proteins insulin pathway studies could aid identifying novel drug targets understanding common modulating factors tdm elsevier rights reserved
interest enrichment eggs poultry meat omega fatty acids increased given important role human metabolism inclusion eggs poultry meat achieved feeding ingredients flaxseed fish oil fish meal marine algae canola birds however problems various production parameters sensory quality eggs meat may arise former possibly caused antinutritional physiological effects latter influenced interaction volatile substances possible increases formulation costs also deserve attention strategies ameliorate undesirable effects include limiting inclusion levels sources time feeding mixing different sources commercial rations including high levels vitamin along high quality ingredients mild heat treatment may eliminate drawbacks feeding flaxseed birds
intergeneric hybridization important strategy introgress alien genes common wheat improvement presence crossability barrier mechanism regulated gene played major destructive role hybridization reported genes order know underlying molecular mechanism dissect barrier cdna aflp amplified fragment length polymorphism transcriptional analysis carried using chromosome ril recombinant inbred line population totally differentially expressed fragments gene identified cloned sequenced expression confirmed northern blotting analysis sequence analysis resulted clones revealed several classes putative genes including stress responsive signal transduction flowering related genes probable relation genes vrn located along gene discussed
intervertebral disc degeneration idd considered main cause many spinal disorders however underlying pathophysiology clearly understood recent studies indicate excessive mechanical loading may serve major role initiation idd aim present study explore effect noninvasive cumulative axial loading intervertebral discs lumbar spine using novel rabbit model rabbits experimental group placed individual tubes specifically designed force maintenance upright posture loaded heavy collar increase intradiscal pressure lumbar spine radiograph imaging magnetic resonance imaging mri performed every weeks provide evidence disc degeneration end experiment animals sacrificed disc specimens harvested quantitative polymerase chain reaction histological analysis mri results revealed significant progressive reductions signal intensities lumbar discs experimental group compared control group throughout week study period expression level type collagen significantly increased expression levels type collagen aggrecan significantly decreased experimental group compared control group histological examination revealed marked structural changes experimental group including fibrocartilage like tissue ingrowth accelerated fibrotic changes nucleus pulposus results present study indicate noninvasive cumulative axial load able induce accelerated degenerative changes rabbit lumbar discs may provide useful information establishment novel animal model idd research idd humans
intracerebral hemorrhage ich lifethreat ening type stroke previous studies reported bone marrow mesenchymal stem cells bmscs may exert beneficial effects treatment ich however remains unknown whether neuroprotection exerted bmscs ich due differentiation bmscs trophic factors secreted conditioned medium addition growth associated protein gap protein associated neurite extension may considered prospective therapeutic target treatment ich present study investigated whether administration bmsc could considered alternative established treatment direct bmsc transplantation addition underlying mechanisms evaluated neurological function tests brain water content reverse transcription quantitative polymerase chain reaction western blotting used present study current study indicated neuroprotective effects bmsc implantation bmsc treatment similar decrease severity post ich cerebral edema well improving neurological functions molecular level treatment bmsc resulted marked elevation expression gap interleukin addition significant reduction expression levels tumor necrosis factor following application phosphorylated extracellular signal regulated kinase erk inhibitor bmsc rat model mrna protein expression levels gap significantly attenuated therefore findings present study demonstrated treatment bmsc may alternative direct bmsc transplantation rat model ich mechanism underlying bmsc mediated neuroprotection may associated anti inflammatory effects well activation gap transcription expression erk phosphorylation therefore erk gap signaling pathway may considered potential novel application target bmsc treatment neurological diseases
intranasal infection vaccine strain venezuelan equine encephalitis virus caused persistent viral infection brains mice without functional beta cells beta tcr remarkably viral kinetics host response gene transcripts symptomatic disease similar beta tcr wild type cbl mice acute phase infection days post infection dpi mice clear infectious virus brain dpi beta tcr maintain infectious virus brain dpi persistent brain infection beta tcr correlated inflammatory infiltrates elevated cytokine protein levels brain later time points persistent brain infection beta tcr mice provides novel model study prolonged alphaviral infection well effects biomarkers long term viral inflammation brain
introducing animal new location could hazardous form disease transmission especially respect infections often overlooked introduced infectious agents including parasitic ones pose potential danger native animal population within conservation program european bison introduced many european countries however largest european herbivore recognized new host invasive parasitic nematode ashworthius sidemi poland since prevalence non native parasite poland increased bison also wild ruminants five european bison individuals transported poland czech republic current study examined gastrointestinal tracts two european bison two red deer culled idlov game reserve sidemi identified investigated animals using morphological molecular methods infection intensity higher bison deer findings represent first record invasive parasite european bison czech territory results study indicate changes epidemiological patterns ashworthius infections climatic condition central europe well need verify reliability ashworthiosis intravital diagnostics one expect sidemi spread gradually czech republic colonize native ruminant hosts
introduction prostate cancer frequent cancer men france public health issue cancer heterogenous clinical need accurate non invasive imaging method improve diagnosis guide choice therapy evaluate efficacy undertook critically review different molecular imaging probes currently used clinical trial method systematic review literature performed pubmed medline database searching articles french english published pet tracer prostate cancer clinical application results several pet tracers investigation low performance fdg prostate cancer france two new pet tracers marketing authorization naf choline tracers several limitations naf analyses bone metastasis choline changed recurrence prostate cancer effective recurrence low psa furthermore sensitivity low detection lymph nodes metastasis initial disease several tracers trial including psma offer encouraging prospects initial staging recurrences conclusion accurate knowledge molecular biology allowed develop metabolic imagery many new tracers evaluation prostate cancer indication needs established elsevier masson sas rights reserved
introduction plum cultivars exhibit differences fruit quality however little known changes fruit growth quality plum cultivars maturing different seasons study conducted contribute better understanding fruit growth ripening behavior japanese plum prunus silicina lindl varieties according maturing season materials methods three japanese plum cultivars studied early black amber mid amber jewel late season angelino maturing increase fruit weight diameter determined days full bloom dafb harvest whilst changes fruit pulp skin seed dry weights fruit firmness soluble solid contents ssc titratable acidity studied days stone hardening dash ethylene production respiration rate activities aminocyclopropane carboxylic acid synthase acs aminocyclopropane carboxylic acid oxidase aco enzymes fruit firmness fruit color ssc ascorbic acid total antioxidant carotenoid contents determined alternate days fruit ripening results discussion plum cultivars exhibited three distinct phases fruit growth development dafb fruit exhibited longest duration phase iii days days compared fruits respectively fruit skin dry weight higher fruit whilst fruits exhibited highest increase seed pulp dry weight dash fruits showed climacteric fruit ripening sharp rise acs aco enzymes whereas fruit showed suppressed climacteric ripening fruit ripening period fruit remained firm higher ssc scc ratio compared fruits level ascorbic acid higher fruit whilst total carotenoids total antioxidants mol trolox higher fruit respectively conclusion physico chemical changes fruit ripening vary cultivar associated level endogenous ethylene production japanese plum cultivars exhibit varying levels ssc ssc ratio levels individual total antioxidants ripe fruits
introduction tight balance regulatory foxp treg conventional foxp tconv cell subsets peripheral compartment maintained stable throughout lifetime essential preserving self tolerance along efficient immune responses excess treg cells described aged individuals may critically contribute reported immunodeficiency work investigated quantitative changes thymus emigration may alter treg tconv homeostasis regardless aging status peripheral compartment methods used two different protocols modify rate thymus emigration thymectomy adult young weeks old mice grafting young thymus onto aged months old hosts additionally lymphoid cells young aged mice intravenously transferred rag mice alterations treg tconv peripheral frequencies following protocols investigated days flow cytometry results thymectomized young mice presented progressive increase treg cell frequency grafting functional thymus aged mice restored young like physiological treg tconv proportion strikingly cells derived young aged splenocytes colonized lymphopenic periphery rag hosts extent giving rise similarly elevated treg cell levels irrespective age donor population absence thymus output treg subset seems survive longer confirmed lower proportion annexin cells conclusions data suggest thymus emigrating population harboring adequate proportion treg tconv lymphocytes may essential keep treg cell balance independently age related shifts intrinsic peripheral environment cell biology
introduction evolution bioanalytical methodologies identify quantify drug metabolites led wealth biotransformation information preclinical early clinical testing phases however abundance metabolism data clarified select important circulating human metabolites safety assessment consequently stringent regulatory expectations comprehensive approach human metabolism led pharmaceutical sponsors employ variety novel methods estimate circulating drug metabolites humans animals areas covered review provides context human circulating metabolites must qualified safety animals detailed overview also presented concerning conduct assessments drug development expert opinion human metabolite qualification strategy required element drug safety package submitted new drug application nda important question whether additional information metabolite safety making human drugs safer currently debatable issue especially stand alone metabolite testing fraught challenges drug development moves twenty first century pressing need sophisticated methodologies address human drug metabolite safety
introduction many inflammatory bowel disease ibd patients benefit long term antitumour necrosis factor treatment new anti inflammatories urgently needed discovery interleukin axis pivotal ibd pathogenesis many different compounds developed targeting different components within pathway areas covered literature search march performed identify relevant reports role axis ibd different molecules targeting pathway first authors briefly summarize immunology pathway elucidate mode action different agents second describe different molecules targeting pathway besides discussing efficacy safety data also explore immunogenicity exposure pregnancy pharmacokinetics expert opinion new era ibd treatment recently initiated besides immuno modulators tnf antagonists anti adhesion molecules monoclonal antibodies targeting pathway developed biomarkers personalized medicine urgently needed therapeutic evolution improve disease related patient reported outcome though lot questions still addressed future years
introduction bacterial infection bile flow retardation form vicious cycle promotes stone formation recurrence seems mucin overexpression plays important role process however mechanism increased mucus secretion biliary tract bacterial infection treatment remain unclear material methods human biliary epithelial cells induced neutrophil elastase production cell supernatants detected specific kit cells pretreated inhibitor expression mucac detected real time polymerase chain reaction pcr western blot immunohistochemistry moreover selective pkc nox inhibitors apocynin bisindolylmaleimide used pretreat cells detect mucac mrna protein expression pretreated cells selective inhibitors detected transforming growth factor alpha tgf alpha using elisa kit results production increased dose dependent manner upregulated mucac expression mrna protein levels dmtu could reduce high expression mrna level grey analysis western blot mean density immunohistochemical staining protein level moreover apocynin bisindolylmaleimide could reduce production stimulated reduce mucac high expression mrna level grey analysis western blot mean density immunohistochemical staining protein level addition induced tgf alpha production three selective inhibitors could reduce conclusions induced reactive oxygen species participated regulation mucac production moreover protein kinase nadph oxidase nox regulate mucac production challenged human biliary epithelial cells
introduction combination therapy infliximab immunomodulators superior monotherapy resulting better outcomes higher trough levels infliximab role concurrent immunomodulatory therapy adalimumab trough levels adequately investigated evaluated impact concomitant immunomodulation adalimumab trough levels patients scheduled maintenance therapy method conducted prospective observational cross sectional study inflammatory bowel disease patients maintenance therapy adalimumab trough levels measured january january drug level anti drug antibody measurements performed sera using solid phase assay pairwise comparison means used compare trough levels patients without concomitant immune modulator therapy results total patients included twenty three patients weekly dosing whereas alternate weeks median adalimumab trough levels comparable patients without clinical remission iqr versus iqr respectively patients elevated faecal calprotectin lower adalimumab trough levels median iqr compared patients faecal calprotectin median iqr though achieve statistical significance median adalimumab trough levels among patients concurrent immunomodulators iqr compared concurrent immunomodulator iqr conclusion adalimumab trough levels significantly higher patients concurrent immunomodulators maintenance therapy trend towards lower adalimumab trough level patients elevated calprotectin
introduction genomic transcriptomic profiling tumours revolutionised understanding cancer however majority tumours possess multiple mutations determining oncogene even pathway target difficult proteomics emerging powerful approach identify functionally important pathways driving cancers targeted therapeutically areas covered authors provide technical overview mass spectrometry based approaches proteomic profiling review current emerging strategies available identification dysregulated networks pathways drug targets cancer cells key focus ability profile cancer kinomes potential applications mass spectrometry clinic also highlighted expert opinion addition proteomic information genomic platforms proteogenomics providing unparalleled insight cancer cell biology application improved mass spectrometry technology methodology particular ability analyse post translational modifications ptmome providing complete picture dysregulated networks cancer uncovering novel therapeutic targets application proteomics discovery research continue rise improved workflow standardisation reproducibility required mass spectrometry enter routine clinical use
introduction hemophilia linked recessive hemorrhagic disorder caused mutations gene lead qualitative quantitative deficiencies coagulation factor viii fviii molecular diagnosis hemophilia challenging high number different causative mutations distributed throughout large gene molecular studies mutations essential order reinforce understanding pathogenic effect responsible disorder aim study performed molecular analysis tunisian hemophilia patients analyzed mutation spectrum methods screened presence intron intron inversion severe hemophilia patients southern blotting polymerase chain reaction pcr detection point mutations performed dhplc sequencing coding gene region predict potential functional consequences novel missense mutations bioinformatics approaches mapping spatial positions available fviii structure results identified different mutations tunisian hemophilia patients belonging unrelated families identified mutations included intron inversions insertions deletions substitutions total point mutations identified located exon mutated exonic sequence gene among mutations novel deposited hamsters database described recently published articles conclusion mutation spectrum tunisian hemophilia patients heterogeneous presence characteristic features virtual slides virtual slide article found http www diagnosticpathology diagnomx
introduction invasive non typhoidal salmonella ints infections cause high burden lethal sepsis young children hiv patients often associated malaria anaemia malnutrition sickle cell disease vaccines ints urgently needed none licensed yet areas covered review illustrates immunology epidemiology within host pathogen behaviour affect invasive salmonella infections highlights knowledge assist improvement choice vaccines expert commentary control ints disease requires approaches reduce transmission improve diagnosis treatment often difficult implement due fragile ecology economies endemic countries vaccines key tools fight ints disease optimise vaccine design need better define protective antigens mechanisms resistance disease susceptible populations even individuals innate immunity may impaired widespread comorbidities
introduction molecular tests ancillary core business cyto histopathology becoming relevant workload pathology departments histopathology cytopathology autopsies resulted innovations molecular biology techniques developed incredibly fast pace areas covered current widely used techniques molecular pathology fish direct sequencing pyrosequencing allele specific pcr replaced massive parallel sequencing considered next generation rather considered current generation sequencing pre analytical steps molecular techniques dna extraction sample preparation largely automated moreover molecular pathology instruments part integrated workflow traces sample extraction analytical steps results reported steps guided expert laboratory information systems situ hybridization immunohistochemistry quantification largely digitalized much histology mostly digitalized rather viewed using microscopy expert commentary review summarizes technical regulatory issues concerning standardization molecular tests pathology vision future perspectives technological changes also provided
introduction multiple sclerosis demyelinating disease affects young adults age group represents second leading cause disability setting precise aetiology elucidated widely accepted occur genetically predisposed patients exposed certain environmental factors discovery regulatory role played intestinal microbiota various autoimmune diseases opened new line research field discussed review development reviewed published studies role microbiota development animal model experimental autoimmune encephalomyelitis eae mice shown intestinal microorganisms regulate polarisation helper cells function regulatory cells activity cells participate pathogenesis eae contribute prevention treatment contrast evidence humans still scarce mainly based case control studies point presence differences certain bacterial communities conclusions multiple evidence points rote microbiota eae extrapolation results still early stages research studies needed define bacterial populations associated role play pathogenesis therapeutic possibilities knowledge offers sociedad espanola neurologia published elsevier espana
introduction primary sjogren syndrome pss one autoimmune diseases characterized polyclonal autoantibody production human homologue mouse double minute mdm important negative regulator previous study indicated autoantibody mdm detected systemic lupus erythematosus patients purpose study study anti mdm autoantibody pss patients methods anti mdm autoantibody sera pss patients normal controls investigated elisa positive samples confirmed western blotting expression mdm labial gland tissue pss patients normal controls checked immunohistochemistry difference clinical characteristics laboratory findings anti mdm positive anti mdm negative pss patients analyzed results presence anti mdm autoantibody pss patients significantly higher normal controls mdm overexpressed labial gland pss patients pss patients positive anti mdm characterized longer disease duration lymphocytes focal gathering labial gland prevalence anemia thrombocytopenia anti ssb significantly higher pss patients anti mdm autoantibody titer anit mdm negatively associated hemoglobin level platelet count complement level complement level positively associated european sjogren syndrome disease activity index essdai level igg conclusions anti mdm autoantibody may used potential serological biomarker pss disease activity evaluation study role anti mdm mdm pss may help know pathogenesis mechanism pss better
introduction dissemination multi drug resistant bacteria mdrb become major public health concern worldwide increase infections caused mdrb difficulty treating expenditures patient care areas covered reviewed challenges contemporary opportunities rapidly confronting infections caused mdrb century including surveillance detection identification resistance mechanisms action steps expert commentary context first critical point clinical microbiologists able rapidly detect abnormal event outbreak spread mdrb surveillance tools healthcare policies therapies adapted new stochastic event certainly occur future implemented
introduction tuberculous meningitis tbm severe form central nervous system tuberculosis cns constitutes extrapulmonary eptb cases guidelines diagnosis management tbm agree use simple cerebrospinal fluid csf analysis using molecular tools like polymerase chain reaction pcr however sensitivity pcr varies using csf sample present study compared diagnostic utility pcr assay peripheral blood csf sample collected tbm cases aim evaluate application peripheral blood pcr assay alternate tool tbm diagnosis compared conventional csf pcr based system materials methods total tbm patients prospectively recruited patient department wards central india institute medical sciences ciims january feburary mycobacterium tuberculosis mtb specific pcr bactt liquid culture performed recruited cases classified stage based british medical research council bmrc contemporary clinical criteria severity tbm clinical characteristics summarised terms percentages categorical variables age groups gender signs symptoms statistical analysis carried using medcalc software version results overall pcr positivity csf around higher culture peripheral blood positive cases stage wise positivity peripheral blood pcr assay three tbm stages stage stage stage respectively positivity peripheral blood pcr significantly patients csf culture pcr positive mtb infection sensitivity specificity respectively increased positivity rates peripheral blood pcr observed decreased csf blood sugar ratio stage cases suggesting enhanced probability mycobacterial blood dissemination cases tbm severity conclusion results suggest although molecular diagnosis tbm infection csf remains method choice peripheral blood based pcr used good alternative csf case tbm severity repeated csf collection may needed however study demands validation large cohorts justify present hypothesis
introduction tumour necrosis factor alpha tnf alpha gene polymorphism associated psoriasis several populations worldwide presently literature status polymorphism south indian population aim determine profile tnf alpha polymorphism among psoriatic patients materials methods case control study involved patients psoriasis vulgaris psv age gender matched healthy individuals patients recruited department dermatology jalappa hospital research center tamaka kolar karnataka india march march tnf alpha polymorphism genotyped polymerase chain reaction restriction fragment length polymorphism pcr rflp method results frequency tnf alpha allele among psoriatic among non psoriatic individuals difference statistically significant conclusion results indicate tnf alpha gene polymorphism significant marker risk developing psv among south indian karnataka psoriatic patients
introduction unlike molecular biology studies analysis ancient dna adna requires special infrastructure methodological conditions guarantee quality results one main authenticity criteria dna quantification quantitative real time pcr often used given sensitivity specificity nevertheless implementation conditions methodologies fulfill authenticity criteria imply higher costs objective develop simple less costly method mitochondrial dna quantification suitable highly degraded samples materials methods proposed method based use mini primers specific amplification short fragments mitochondrial dna subsequent purification amplified fragments allows standard curve constructed concentrations accordance state degradation samples results proposed method successfully detected dna ancient samples including bone remains mummified tissue dna inhibitory substances also detected conclusion proposed method represents simpler cost effective way detect low amounts adna tool differentiate dna free samples samples inhibitory substances
investigations utilizing recombinant human xenobiotic metabolizing enzymes well human hepatocytes revealed number interactions different environmental chemicals ecs also ecs endogenous metabolites organophosphorus insecticides ops potent inhibitors human metabolism carbaryl carbofuran deet fipronil well jet fuel components nonane naphthalene ops potent irreversible inhibitors testosterone metabolism cytochrome cyp estradiol metabolism cypa cypa cyp inhibitions believed due release reactive sulfur cyp catalyzed oxidative desulfuration also shown esterase responsible initial step permethrin metabolism human liver inhibited chlorpyrifos oxon carbaryl number pesticides including chlorpyrifos fipronil permethrin repellent deet shown inducers cyp isoforms human hepatocytes fipronil potent several agrochemicals including fipronil pyrethroids permethrin deltamethrin show toxicity toward human hepatocytes fipronil potent regard endosulfan alpha shown promise model substrate phenotyping cypa cypb human liver microsomes also inducer cypb acting pxr receptor wiley periodicals inc
irinotecan natural alkaloid agent widely used cancer therapy high mobility group protein non histone chromosomal protein plays fundamental role gene expression inflammation study effect irinotecan high mobility group protein mmp content gene expression cell cycle cell growth human breast cancer cells mcf investigated cells exposed various concentrations irinotecan viability determined trypan blue exclusion dimethylthiazal diphenyltetrazolium bromide assays high mobility group proteins extracted control drug treated cells analyzed immunoblot high mobility group protein mmp messenger rna expression studied reverse transcription polymerase chain reaction results demonstrated reduction cell viability upon increasing irinotecan concentration regulated high mobility group protein gene expression regulated mmp mrna although content high mobility group protein decreased chromatin extract upon drug action high mobility group protein release extracellular space detected immunoblot analysis irinotecan decreased acetylation increased poly adp ribose polymerase fragmentation kda anion superoxide production suggesting induction apoptosis cells propidium iodide staining cells drug treatment revealed arrest cells phase results concluded overexpression high mobility group protein presence irinotecan precedes breast cancer cells apoptosis response binding irinotecan chromatin high mobility group protein may condense aggregate chromatin preventing high mobility group protein release chromatin
iron plays many roles human physiology article summarize basic current knowledge essential micronutrient human metabolism
iron dependent enzymes prevalent nature participate wide range biological redox activities frequently high valence iron intermediates involved catalytic events iron dependent enzymes especially activation peroxide molecular oxygen involved building fundamental framework iron oxygen chemistry reactive intermediates constantly attract significant attention enzymology community past decades tremendous efforts number laboratories dedicated capture characterization intermediates improve mechanistic understandings unprecedented bis intermediate reported type diheme enzyme maug involved maturation tryptophan tryptophylquinone cofactor methylamine dehydrogenase intermediate although chemically equivalent well characterized high valence iron intermediates compound compound intermediate methane monooxygenase well hypothetical species rieske non heme oxygenases orders magnitude stable high valence species absence primary substrate recently discovered bis intermediate exhibits unique near absorption feature attributed novel charge resonance phenomenon review compares properties maug structurally related enzymes summarizes current knowledge new high valence iron intermediate including chemical origin structural basis explores formation consequences charge resonance recounts long range catalytic mechanism bis participates biological strategies storing oxidizing equivalents iron ions also discussed
accepted inflammation plays critical role development atherosclerosis pathogenesis clear cell produced interleukin immune regulatory cytokine inhibit immune inflammation study tests hypothesis psychological stress hormone cortisol suppresses expression peripheral cells patients atherosclerosis peripheral blood samples collected patients coronary artery atherosclerosis cells isolated blood samples analyzed expression micro rna mir real time polymerase chain reaction observed frequency cell less patients atherosclerosis healthy controls serum cortisol levels higher patients healthy controls peripheral cell frequency negatively correlated serum cortisol levels exposure cells cortisol increased expression mir cells cortisol also inhibited expression cells mir played critical role treating cells atherosclerosis patients anti mir liposomes reversed ability expression cells expression suppressed peripheral cells regulated anti mir liposomes
possible long lasting chronic infections tuberculosis leprosy individuals generate stronger immune response produce chronic shift systemic levels inflammatory proteins consequently systemic immunological shift could affect inflammatory responses persistent pathogens porphyromonas gingivalis associated periodontal disease objectiveto determine vitro exposure mycobacterium tuberculosis leprae lysates impacts subsequent immune responses gingivalis propose new dialogue experimental immunology paleopathology material methodswe sequentially days protocol exposed peripheral blood mononuclear cells pbmcs healthy donors bacterial lysates either tuberculosis leprae gingivalis collecting supernatants measured expression immune proteins tnf ifn using enzyme linked immunosorbent assay resultsearly exposure day pbmcs leprae tuberculosis lysates induces inflammatory shift detected increase tnf ifn cells subsequently day exposed oral pathogen gingivalis discussionby extrapolating results suggest chronic infections leprosy could generate systemic immunological shift affect inflammatory processes one present propose presence severity explored proxy inflammatory status competence reconstructing health profile past populations
still problematic use enzyme activities indicators soil functions enzyme assays determine potential real enzyme activities meaning measured enzyme activities known assumption single enzyme activity indicator nutrient dynamics soil neglects many enzyme activities involved dynamic processes spatio temporal variations natural environments always considered measuring enzyme activities many direct indirect effects make difficult interpretation response enzyme activity perturbations changes soil management changes plant cover soil etc first review discussing links enzyme encoding genes relative enzyme activity soil combining measurements enzyme activity soil expression transcriptomics proteomics genes encoding relative enzymes may contribute understanding mode timing microbial communities responses substrate availability persistence stabilization enzymes soil
karenia brevis florida red tide dinoflagellate responsible detrimental effects human environmental health production brevetoxins brevetoxins thought synthesized polyketide synthase pks complex gene cluster pks yet identified eight pks transcripts identified brevis high throughput cdna library screening full length sequences obtained race demonstrated presence polyadenylation utrs identical dinoflagellate specific spliced leader sequence end pks transcripts six transcripts encoded individual ketosynthase domains one ketoreductase one transcript encoded acyl carrier protein acp domains transcript lengths ranged nucleotides based sequence analysis confirmed northern blotting baysian phylogenetic analysis brevis domains placed well within protist type pks clade thus although similar type modular pkss presence individual catalytic domains separate transcripts suggests protein structure similar type pkss catalytic domain resides individual protein results identify unprecedented pks structure toxic dinoflagellate published elsevier gmbh
kawasaki disease multisystemic vasculitis result coronary artery lesions predominantly affects young children characterized prolonged fever diffuse mucosal inflammation indurative oedema hands feet polymorphous skin rash non suppurative lymphadenopathy coronary artery involvement important complication kawasaki disease may cause significant coronary stenosis resulting ischemic heart disease introduction intravenous immunoglobulin decreases incidence coronary artery lesions less etiopathogenesis disease remains unclear several lines evidence suggest interplay microbial infection genetic predisposition could take place development disease review summarize state art pathogenetic mechanisms kawasaki disease underscoring relevance haematological features novel field investigation
ketamine used clinically racemic mixture optical isomers differ analgesic properties psychomimetic effects administered individually together racemate ketamine enantiomers differ hepatic clearance duration anesthetic effect ketamine exhibits greater clearance faster anesthetic recovery compared racemate greater clearance compared ketamine ketamine undergoes extensive hepatic metabolism primarily via demethylation norketamine yet little known human metabolism ketamine enantiomers purpose investigation therefore characterize ketamine racemate enantiomer metabolism human liver test hypothesis differences hepatic ketamine enantiomer metabolism account observed differences ketamine enantiomer pharmacokinetics ketamine demethylation microsomes three human livers measured gas chromatography mass spectrometry ketamine concentrations typically achieved anesthesia mum rate ketamine demethylation greater ketamine greater racemate ketamine concentrations rate racemate demethylation less sum rates individual enantiomers reflecting metabolic enantiomeric interaction whereby one ketamine enantiomer inhibits metabolism enantiomer demethylation racemic ketamine enantiomer catalyzed two apparent enzymes high affinity low capacity enzyme mum max nmoles min nmole low affinity high capacity enzyme mum max nmoles min nmole therapeutic concentrations ketamine metabolism catalyzed predominantly one enzyme low enzyme permitting calculation vitro clearance parameter max vitro clearances ketamine enantiomers racemate excellent predictors relative vivo clearances results demonstrate relative enantiomeric selectivity human liver ketamine metabolism accounts observed differences clinical pharmacokinetics racemic ketamine ketamine enantiomers
kif ciliary kinesin motor protein regulates mammalian hedgehog pathway activation influencing structure primary cilium show kif required normal cell development despite fact cells lack primary cilia analysis kif deficient thymus showed kif deficiency increases early thymocyte progenitor population reduces differentiation double positive cell transition mature cell kif deficiency selectively delayed maturation lineage expression correlates tcr signal strength reduced mature cells result thymocyte intrinsic kif deficiency kif deficient cells radiation chimeras activated less efficiently stimulated anti anti vitro kif deficient thymocytes showed higher expression hedgehog target gene ptch less sensitive treatment recombinant shh kif deficient cell development refractory neutralisation endogenous proteins indicating kif deficient thymocytes unable interpret changes hedgehog signal addition kif deficiency reduced cell surface mhcii expression thymic epithelial cells
knowledge surrounding trillions microbes inhabit human gut bloomed exponentially recent years emerging concept gut brain axis represents major shift think neurological health recent workshop university british columbia canada brought together multi disciplinary leaders field microbiomics brain health aimed serve springboard future combined endeavors areas article provides motivation overview workshop next steps establishing cross disciplinary initiative brain health microbiome
kruppel like factor klf member klf family zinc finger transcription factors first klf cloned using complementary dna polymerase chain reaction pcr techniques human vascular endothelial cells template addition klf known ubiquitous kruppel like factor widely expressed numerous human tissues low levels present study function klf migration epithelialmesen chymal transition emt associated tumor progression investigated human oral squamous cell carcinoma oscc cells genes differentially expressed normal oscc tissue identified gene expression omnibus database identified upregulation klf oscc expression subcellular location klf analyzed using immunohistochemistry klf expression measured three oscc cell lines two cell lines highest lowest cal klf expression selected analysis subsequently cells reduced klf expression cal cells overexpressing klf cal constructed transwell migration wound healing assays used analyze migration cells addition mrna protein expression levels emt markers cadherin cadherin vimentin snail detected using reverse transcription quantitative pcr western blotting klf overexpression oscc validated using tissue immunohistochemistry identified moderate high cytoplasmic staining klf oscc cells klf knockdown overexpression altered migration ability cal cells decreased increased significantly respectively expression cadherin cadherin vimentin snail markedly altered cal cells indicating changes emt status results present study suggest klf overexpression changes migratory behavior oscc cells induces emt lymph node metastasis expression snail
lambda interferon ifn lambda potent antiviral effects multiple enteric viral pathogens including norovirus rotavirus preventing curing infection intestine includes diverse array cell types however cell upon ifn lambda acts exert antiviral effects unclear sought identify ifn lambda responsive cells generation mice lineage specific deletion receptor ifn lambda ifnlr found expression ifnlr intestinal epithelial cells iecs small intestine colon required enteric ifn lambda antiviral activity iec ifnlr expression also determines efficacy ifn lambda resolving persistent murine norovirus mnov infection regulates fecal shedding viral titers tissue thus expression ifnlr iecs necessary response endogenous exogenous ifn lambda demonstrate iec ifnlr expression required sterilizing innate immune effects ifn lambda extending findings rag deficient mice finally assessed whether findings pertained multiple viral pathogens infecting mice specifically lacking iec ifnlr expression reovirus mice phenocopied ifnlr null animals exhibiting increased intestinal tissue titers enhanced reovirus fecal shedding thus iecs critical cell type responding ifn lambda control multiple enteric viruses first genetic evidence supports essential role iecs ifn lambda mediated control enteric viral infection findings provide insight mechanism ifn lambda mediated antiviral activity importance human noroviruses hnovs leading cause epidemic gastroenteritis worldwide type iii interferons ifn lambda control enteric viral infections gut shown cure mouse norovirus small animal model hnovs using genetic approach conditional knockout mice identified iecs dominant ifn lambda responsive cells control enteric virus infection vivo upon murine norovirus reovirus infection ifnlr depletion iecs largely recapitulated phenotype seen ifnlr mice higher intestinal tissue viral titers increased viral shedding stool moreover ifn lambda mediated sterilizing immunity murine norovirus requires capacity iecs respond ifn lambda findings clarify mechanism action cytokine emphasize therapeutic potential ifn lambda treating mucosal viral infections
lanzhou lily lilium davidii var unicolor symptoms severe fasciation dwarfing observed central region gansu province disease caused serious loss production bulb edible crop order determine possible virus infections involved described disease set enzyme linked immunosorbent assays immunoelectron microscopy performed test naturally infected plants mixed infection includes lily symptomless virus lsv flexiviridae carlavirus cucumber mosaic virus cmv bromoviridae cucumovirus lily mottle virus lmov potyviridae potyvirus confirmed serologic morphologic evidences subsequent thin sectioning observation transmission electron microscope different tissues infected samples showed cytopathologic damages happened total rna extracted different tissues infected plants used northern blotting assays probes coat protein gene virus hybridization data showed symptomatic infection related virus thus study gives reliable serologic morphologic cytopathologic molecular evidences diagnosis systemic infections study hoped useful prevention certain viral diseases increase quality production crop future
leishmaniasis arthropod borne disease affects approximately million people worldwide annually aims study detect presence leishmania kinetoplastida trypanosomatidae dna feeding preferences probable vector species endemic focus leishmania infantum turkey entomological sampling performed august october aydn province cases human canine leishmaniasis reported previously total sandfly specimens comprising nine species belonging two genera phlebotomus sergentomyia diptera psychodidae five subgenera phlebotomus genus phlebotomus paraphlebotomus larroussius adlerius transphlebotomus collected five villages among phlebotomus specimens phlebotomus neglectus noted abundant species followed phlebotomus tobbi leishmaniadna detected pools neglectus tobbi sergentomyia dentata kdna polymerase chain reaction pcr leishmaniadna phlebotomus specimens identified infantum leishmaniadna sergentomyia spp could identified species level real time pcr detection leishmaniadna wild caught neglectus high percentage human dna engorged specimens suggests neglectus probably important vector species infantum aydn province
leptin one adipocyte secreted peptides involved control appetite body weight several studies demonstrated plasma leptin levels elevated obese subjects positively correlated body weight arterial endothelin system plays important role regulation vascular tone overexpression may involved pathogenesis hypertension associated insulin resistance study performed explore regulatory effects leptin receptor expression binding vascular smooth muscle cells vsmcs use northern blotting immunoblotting labeled binding assay effect leptin receptor mediated cell proliferation also tested results showed leptin caused significant increase binding time dose dependent immunoblotting showed expression type receptor etar leptin treated cells increased fold compared controls levels etar mrna measured northern blotting also increased fold leptin treated cells pretreatment erk inhibitor blocked leptin induced increase binding finally stimulated cell proliferation enhanced leptin pretreatment maximal increase twofold compared controls conclusion leptin increases etar expression vsmcs time dose dependent manner effect erk dependent associated increased stimulated cell proliferation findings provide support roles leptin system pathogenesis obesity associated hypertension
levo tetrahydropalmatine thp tetrahydroprotoberberine isoquinoline alkaloid used analgesic agent china years recent studies revealed thp effective treatment drug addiction however plasma metabolic profile mass balance clearance pathways thp human remain unknown present study analytical strategy developed qualitative quantitative investigation metabolism disposition thp human detection structural characterization thp metabolites performed using liquid chromatography quadrupole time flight mass spectrometry selected major metabolites plasma urine feces determined liquid chromatography detection quantified using triple quadruple mass spectrometry reference standards total metabolites identified formed via demethylation mono hydroxylation glucuronidation sulfonation desmethyl metabolites five major metabolites accounted parent drug concentration plasma major urinary fecal metabolites parent drug monitored accounted dose dose unchanged drug multiple demethylations followed glucuronide sulfate conjugations renal excretion major drug clearance pathways thp human elsevier rights reserved
galactono lactone dehydrogenase galldh last key enzyme putative ascorbic acid asa biosynthetic pathway higher plants evaluate effect gene manipulating asa accumulation cdna encoding galldh rrgalldh acc isolated rosa roxburghii fruit known rich asa introduced tobacco plants agrobacterium mediated transformation camv constitutive promoter present study southern blotting revealed stable integration transgene single copy four independent transgenic lines among showed significantly enhanced rrgalldh transcript levels galldh activities asa accumulations compared untransformed plants developed asa overproducing tobacco plant overexpressing galldh exposed salt stress nacl asa overproducing transgenic lines found grow better increased shoot length fresh weight furthermore demonstrated highest asa accumulation fold higher expression level rrgalldh showed higher resistance oxidative stress caused paraquat compared results justify overexpression galldh gene confers elevated asa accumulation tolerance environmental stresses
life remarkable unlike physical system tempting attribute special factors physics founded assumption universal laws principles underlie natural phenomena far clear laws life serious descriptive predictive power analogous laws physics yet theoretical biology sense theoretical physics part obstacle developing universal theory biological organization concerns daunting complexity living organisms however many attempts made glimpse simplicity lurking within complexity capture simplicity mathematically paper review promising new line inquiry bring coherence order realm biology focusing information unifying concept
limonium bicolor typical recretohalophyte specialized salt secreting structure epidermis called salt gland plays significant role improving saline land understanding molecular mechanisms salt secretion salt gland development requires efficient bicolor transformation system described report leaf explants incubated agrobacterium tumefaciens strain eha harboring plasmid ptck containing beta glucuronidase gene gus transgene reporter hygromycin resistance gene selectable marker leaves induced regenerate shoots murashige skoog medium supplemented benzyladenine alpha naphthaleneacetic acid roots induced medium containing indole butyric acid tissue culture system suitable agrobacterium mediated transformation bicolor pre cultivated explants old incubated agrobacterium shaking culture min explants bacterium cultivated dark explants transferred selection medium containing hygromycin piperacillin sodium added prevent continued agrobacterium growth histochemical assays pcr detect gus gene showed transformation frequency quantitative pcr northern blotting verified integration presence gus gene bicolor first report agrobacterium based transformation system bicolor system facilitate research identity function genes involved salt gland development salt secretion
lipase inhibitors main anti obesity drugs prescribed days complexity mechanism action making difficult develop new molecules purpose efficacy drugs known depend closely physico chemistry lipid water interfaces involved unconventional behavior lipases target enzymes lipolysis reaction occurs oil water interface involves complex equilibria adsorption desorption processes conformational changes catalytic mechanisms context surfactants induce significant changes partitioning enzyme inhibitor water phase lipid water interfaces surfactants found oil water interface compete lipases adsorption also solution form micellar aggregates monomers may interact hydrophobic parts lipases solution various interactions combined emulsification dispersion insoluble substrates inhibitors either promote decrease activity inhibition lipases review examples various effects surfactants lipase structure activity inhibition show complex various equilibria involved lipolysis reaction tend
long noncoding rnas lncrnas play crucial roles carcinogenesis however function mechanism lncrnas human non small cell lung cancer nsclc still remaining largely unknown long intergenic noncoding rna linc found upregulated acts oncogene breast cancer little known expression pattern biological function underlying mechanism nsclc herein identified linc oncogenic lncrna driving tumorigenesis nsclc found linc upregulated associated oncogenesis tumor size metastasis poor prognosis nsclc moreover linc affected cell proliferation invasiveness metastasis apoptosis multiple nsclc cell lines mechanistically linc bound histone methyltransferase enhancer zeste homolog ezh catalytic subunit polycomb repressive complex prc highly conserved protein complex regulates gene expression methylating lysine histone acted modular scaffold ezh prc complexes coordinated localization specified histone modification pattern target genes including consequently altered nsclc cell biology thus linc mechanistically functionally clinically oncogenic nsclc targeting linc pathway may meaningful treating patients nsclc
long term antiviral therapy nucleos ide analogs nas may lead emergence drug resistance viral mutants chronic hepatitis virus hbv patient purpose study identify adefovir dipivoxil adv resistance mutations hbv polymerase determine effective drugs replace adv reverse transcriptase coding region pcr amplified using hbv dna extracted patient blood samples sequenced nineteen substitution mutations detected among rtnr rtty rtnh often observed patients receiving adv administration three potential drug resistant sites introduced hbv replication competent plasmids vitro susceptibility wild type mutant type hbv nas analyzed southern blotting quantitative real time pcr rtnr rtty rtnh substitutions obvious effect hbv dna replication gene expression vitro susceptibility analysis showed rtnr rtty rtnh substitutions responsible reduced susceptibility adv demonstrated fold increase resistance towards adv respectively however hbv harbored mutations retained normal susceptibility lmv ldt etv tdf
lschaemic heart disease stroke diabetes mellitus accounting mio deaths year thus amongst globally leading death causes three diseases morbidities obesity impacted genetics epigenetics diet linked numerous studies excessive intake sodium low molecular weight sugar trans fats saturated fats total energy consumed accordingly food components considered health sensitive ingredients efsa issued recommended maximal intake levels current contribution highlights promising strategies reduce health sensitive nutrients without decreasing consumer preference achieved priori replacing alternative ingredients dispersed structures providing similar sensory experiences amplifying sensory impact nutrients controlling transport phenomena using bioactives interacting oral sensory cells allows reducing concentration ingredients last least impact excessive consumption nutrients partially mitigated counteracting bioactives modulating gastro intestinal microbiome impacts nutrient release digestion elsevier ltd rights reserved
lung cancer highest mortality rate among cancer patients world particular patients diagnosed advanced noncurable stage computed tomography screening high risk individuals shown early detection could reduce mortality rate however still high false positive rate screening may harm healthy individuals unnecessary follow scans invasive follow procedures alternatively false negative indeterminate results may harm patients due delayed diagnosis treatment lung cancer noninvasive biomarkers complementary screening could lower false positive false negative rate screening baseline thereby reduce number patients need follow diagnose patients earlier stage lung cancer lung cancer tissue generates lung cancer associated proteins immune system might produce high affinity autoantibodies autoantibody response tumor associated antigens starts early stage lung cancer may endure years identification tumor associated antigens corresponding autoantibodies body fluids potential noninvasive biomarkers could thus effective approach early detection monitoring lung cancer provide overview differentially expressed protein antigen autoantibody biomarkers combined imaging might clinical use early detection lung cancer
lung cancer remains leading cause cancer related deaths men women however discovery several oncogenic driver mutations development immune checkpoint inhibitors resulted improved clinical outcomes patients although activating kras mutations common recurring molecular events lung adenocarcinoma little progress made past decades new agents approved indication elucidation underlying biology diverse patient subgroup offers great potential renewed hope regarding rational development rigorous evaluation subsequent approval novel targeted agents combinations effectively suppress compensatory escape routes emergence resistance issues plagued previous attempts review structured manner aspects kras positive non small cell lung cancer including molecular biology clinicopathologic characteristics prognostic predictive value kras mutations well previous contemporary approaches towards treatment elusive target elsevier ireland ltd rights reserved
lyso glycosphingolipids lyso gsls deacylated forms glycosphingolipids gsls important synthetic intermediates preparation gsl analogs although lyso gsls produced hydrolyzing natural gsls using sphingolipid ceramide deacylase scdase yield reaction usually low scdase also catalyzes reverse reaction ultimately establishing equilibrium hydrolysis synthesis present study developed efficient method controlling reaction equilibrium introducing divalent metal cation detergent enzymatic reaction system presence taurodeoxycholate hydrate generated fatty acids precipitated formation insoluble stearate salts pushing reaction equilibrium toward hydrolysis yield hydrolysis achieved high improvement compared nonoptimized condition preparative scale lyso obtained yield highest reported yield date method also used efficient hydrolysis variety gsls sphingomyelin thus method serve facile easily scalable general tool lyso gsl production facilitate gsl research
lysosomal storage disorders lsds inherited diseases characterized lysosomal dysfunction often showing neurodegenerative course cure treat central nervous system lsds moreover mechanisms driving neuronal degeneration pathological conditions remain largely unknown studying mouse models lsds found neurodegeneration develops progressively profound alterations presynaptic structure function models impaired lysosomal activity causes massive perikaryal accumulation insoluble synuclein increased proteasomal degradation cysteine string protein csp result availability synuclein csp nerve terminals strongly decreases thus inhibiting soluble nsf attachment receptor snare complex assembly synaptic vesicle recycling aberrant presynaptic snare phenotype recapitulated mice genetic ablation one allele csp synuclein overexpression csp brain mouse model mucopolysaccharidosis type iiia severe form lsd efficiently established snare complex assembly thereby ameliorating presynaptic function attenuating neurodegenerative signs prolonging survival data show neurodegenerative processes associated lysosomal dysfunction may presynaptically initiated concomitant reduction synuclein csp levels nerve terminals also demonstrate neurodegeneration lsds slowed establishing presynaptic functions thus identifying synapse maintenance novel potentially druggable target brain treatment lsds
mac binding protein mac secreted tumor antigen elevated many cancers implicated tumor metastasis well cell adhesion immune functions focused human telomerase reverse transcriptase htert induced mac expression relationship mac expression progression gastric cancer cdna expression array analysis performed telomerase negative cell line engineered overexpress htert compared parental cell htert induced mac expression confirmed via pcr northern blotting elisa flow cytometric analyses revealed mac protein increased fold htert overexpressing cells compared mock control mac expression significantly reduced overexpressed htert neutralized introduction htert specific sirna results suggest mac expression modulated htert mac levels gastric cancer cells tumor tissues determined via northern blot analysis immunohistochemistry mac protein highly expressed gastric cancer cell lines gastric tumor tissues stained densely normal tissues intracellular secreted mac levels also evaluated ilia elisa indicating mac expressed secreted abundantly gastric cancer patients healthy donors elevated serum mac level gastric tumor patients also significantly associated distant metastasis higher tumor stage findings suggest mac induced htert may prove useful prognostic marker detection malignant progression metastatic stomach cancers wiley liss inc
mads box family transcriptional factors shatterproof shp shatterproof shp required fruit dehiscence regulating cell specification valve margin arabidopsis thaliana blastn search brassica database tair using atshp gene query revealed several ests sharing high similarity atshp two highly homologous cdnas shp obtained brassica napus pcr race named bnaa shp bnac shp respectively work focused bnaa shp sequence alignment phylogenetic analysis indicated bnaa shp highly identical atshp southern blotting demonstrated least two copies bnashp napus genome semi quantitive pcr showed bnashp expressed roots floral buds pods stems leaves seeds bnashp localized nuclei hzam cells fused egfp expressed using hasnpv bacmid system
magnesium naturally found bone tissue essential human metabolism well known ion improved bone like apatite nucleation growth study ions ion exchanged onto poly acrylic acid paa thin film containing carboxyl groups deposited commercially pure titanium surface using plasma polymerization discharge power min surface morphology chemical composition samples characterized scanning electron microscopy sem ray diffraction xrd ray photoelectron spectroscopy xps bioactivity ion exchanged samples evaluated immersing simulated body fluid sbf mct cell proliferation bone like apatite forming ability significantly influenced ion concentrations ion promotes bone like apatite nucleation growth surface sbf solution improves mct cell proliferation therefore expected alloys high biocompatibility obtained ion exchanging ion paa plasma modified surface elsevier rights reserved
magnetic force spectroscopy rapidly developing single molecule technique found numerous applications interface physics biology since invention first magnetic tweezers number modifications approach helped relieve limitations original design amplifying strengths inventive molecular biology solutions advanced technique expanding possible applications present form method applied single molecules live cells without resorting intense irradiation easily multiplexed accommodates multiple dnas displays impressive resolution allows remarkable ease stretching twisting macromolecules review describe architecture magnetic tweezers key requirements experimental design analysis data outline several applications method illustrate versatility
magnetic separation technology quick easy method sensitive reliable detection separation purification biomolecules medium dopamine plays crucial role human metabolism hence development selective robust interference free methods dopamine detection great importance present study reported alternative method detection overcomes interference coexisting compounds designed magnetically stabilized fluidized bed system msfb using fluorescein isothiocyanate fitc conjugated magnetic graphene oxide sheets maggos preconcentrator diagnostic tool presence coexisting molecules ascorbic acid uric acid fitc maggos showed selectivity folds respectively compared negligible amount captured fitc maggos non specifically maximum adsorption capacity fitc maggos found characteristics adsorption behavior described application langmuir isotherm model monolayer adsorption accurately experiments carried neutral solutions around physiological
maize dwarf mosaic virus mdmv widespread pathogenic virus causes serious loss yield maize zea mays rna interference rnai triggered hairpin rna hprna transcribed transgenic inverted repeat sequence effective way defend viruses plants study hprna expression vector containing sense arm antisense arm separated intron maize actin gene constructed target protein protease gene mdmv used transform agrobacterium tumefaciens strain eha transformed agrobacterium strain used transform maize embryonic calli isolated immature embryos improved culture technique plants regenerated stringent hygromycin selection certified positive pcr amplification positive plants grown produce offspring nine identified southern blotting transgene integrated one two copies resistance three lines evaluated field trial dual mdmv inoculation two environments found improved compared non transformed control disease indexes transgenic plant lines significantly different highly resistant control line viral titers inoculated plants detected double antibody sandwich enzyme linked immunosorbent assay das elisa result accord resistance evaluated field trial addition uniconazole abt root promoting powder showed significant improvement hardening regenerated plantlets stronger generated better fibrous root system control improvement could facilitate transgenic operation maize
major histocompatibility complex mhc class molecules present antigenic peptides cytotoxic cells adaptive immune response mhc molecules regulated several mechanisms including lipopolysaccharide lps interferon gamma ifn however unclear whether serine protease cathepsin catg generally secreted neutrophils site inflammation might regulate mhc molecules identified catg higher extend catg lactoferrin exogenous regulator cell surface mhc expression immune cells glioblastoma stem cells addition levels mhc molecules reduced dendritic cells catg deficient mice compared wild type counterparts furthermore cell surface catg immune cells including cells cells cells triggers mhc thp monocytes suggesting novel mechanism catg facilitate intercellular communication infiltrating cells respective target cell subsequently findings highlight pivotal role catg checkpoint protease might force target cells display intracellular mhc antigen repertoire
many epidemical biological studies proposed human papillomavirus hpv primarily high risk hpv etiological factor subset head neck cancers premise systematically reviewed relevant articles improved understanding hpv related cancers article comprehensively described characteristics hpv associated tumors according demography histopathology molecular biology prognosis meta analyses conducted combine studies reported association hpv status variables using rev man pooled results showed hpv positive tumors poorly differentiated smaller also strongly associated oropharynx node involvement hpv related tumors showed significantly overexpression less mutations hpv negative tumors patients hpv positive cancers different clinical behaviors reduced risks death study supported view point hpv favorable indicator prognosis hpv related tumors distinct traditional tumors etiological relationship could impact future strategies diagnosis prevention therapy prognosis subset patients wiley periodicals inc
many food feed additives result fermentation genetically modified microorganisms vitamin riboflavin bacillus subtilis production strains developed often used presence neither strain recombinant dna allowed fermentation products placed market food feed additive vitamin product feed grade imported china analysed viable subtilis cells identified dnas two bacterial isolates lhl lgl subjected three whole genome sequencing wgs runs different devices miseq hiseq system wgs data revealed integration chloramphenicol resistance gene deletion endogenous riboflavin rib operon presence four putative plasmids harbouring rib operons event construct specific real time pcr methods detection strain putative plasmids food feed products developed authors published elsevier ltd
many pathological processes including neurogenic bladder malignancy necessitate bladder reconstruction currently performed using intestinal tissue use intestinal tissue however subjects patients metabolic abnormalities bladder stones long term sequelae raising need source safe reliable bladder tissue advancements stem cell biology catapulted stem cells center many current tissue regeneration bioengineering strategies review presents recent advancements use stem cells bladder tissue bioengineering
many recent publications highlight large role pivotal eukaryotic nuclear export protein exportin xpo oncogenesis several malignancies emerging evidence xpo inhibition key target cancer clinical validation pharmacological inhibition xpo recently achieved development selective inhibitor nuclear export compounds displaying interesting anti tumor activity patients massive pre treated hematological malignancies recent reports shown molecular alterations gene encoding xpo showed mutation hotspot following two hematological malignancies similar phenotypes natural histories primary mediastinal diffuse large cell lymphoma classical hodgkin lymphoma emerging evidence suggests mutant xpo plays role carcinogenesis variant quantifiable tumor plasma cell free dna patients using highly sensitive molecular biology techniques digital pcr next generation sequencing therefore proposed xpo variant may serve minimal residual disease tool setting clarify summarize recent findings role xpo cell hematological malignancies conducted literature search present major publications establishing landscape xpo molecular alterations impact xpo protein interest biomarkers investigations development new xpo targeted therapies cell hematological malignancies
mast cells mcs present connective tissue mucosal surfaces classes vertebrates health contribute tissue homeostasis host defense tissue repair via multiple receptors regulating release vast stockpile proinflammatory mediators proteases cytokines however potentially protective cells double edged sword repeated long term stimulus activation leads tissue damage dysfunction accordingly mcs implicated pathophysiologic aspects numerous diseases covering organs understanding biology mcs heterogeneity mechanisms activation signaling cascades may lead development novel therapies many diseases current treatments lacking poor efficacy review focus updates developments biology clinical implications particular focus role respiratory diseases
measuring cell proliferation performed number different methods varying levels sensitivity reproducibility compatibility high throughput formatting protocol describes use three different methods measuring cell proliferation vitro including conventional hemocytometer counting chamber luminescence based assay utilizes change metabolic activity viable cells measure relative number cells multi mode cell imager measures cell number using counting algorithm method presents advantages disadvantages measurement cell proliferation including time cost high throughput compatibility protocol demonstrates method could accurately measure cell proliferation time sensitive detect growth differing cellular densities additionally measurement cell proliferation using cell imager able provide information morphology confluence allowed continual monitoring cell proliferation time conclusion method capable measuring cell proliferation chosen method user dependent
meat adulteration posed considerable risks public health study developed novel realtime quantitative pcr method detection mammalian poultry species used meat products meat adulterants method based detection single copy nuclear gene myostatin specificity heterogeneity copy number myostatin evaluated additionally determined sensitivity precision method results revealed myostatin high specificity low heterogeneity among different mammalian poultry species limit detection animal genomic dna meat ingredient limit quantification animal genomic dna meat ingredient quantification results blind samples showed biases measured true values therefore developed quantitative real time pcr method mammalian poultry species suitable identification quantification different meat ingredients reference gene elsevier ltd rights reserved
melanins darkpolymers found cell wall pathogenic fungi including species genus sporothrix causative agents sporotrichosis vitro experiments strongly suggest pigments important fungal virulence survival host schenckii melanin biosynthesis occurs via three different common pathways generate dihydroxynaphthalene dhn melanin dopa melanin pyomelanin moreover melanin biosynthesis enhanced fungus contact bacteria pseudomonas aeruginosa klebsiella pneumoniae melanin pigments protective effects antifungals genus new scanning transmission electron tomography data indicates accumulation dark pigments membrane bound cytoplasmic organelles melanosomes schenckii yeasts provide date review biosynthesis role melanins discuss roles cell biology pathogenesis sporothrix spp british mycological society published elsevier ltd rights reserved
melanson ingebrigtsen bergouignan ohkawara kohrt lighton jrb new approach flow respirometry measurements humans physiol regul integr comp physiol first published march doi ajpregu indirect whole room calorimetry commonly used studies human metabolism calorimeters configured either push pull systems major obstacle accurately calculating gas exchange rates pull system excurrent flow rate increased incurrent flow rate organism produces water vapor also dilutes concentrations respiratory gasses excurrent sample common approach problem dry excurrent gasses prior measurement drying incomplete large errors calculated oxygen consumption result major potential source error fluctuations concentration incurrent airstream describe novel approach measuring gas exchange using pull type whole room indirect calorimeter relative humidity temperature incurrent excurrent airstreams measured continuously using high precision relative humidity temperature sensors permitting accurate measurement water vapor pressure excurrent flow rates adjusted eliminate flow contribution water vapor respiratory gas concentrations adjusted eliminate effect water vapor dilution addition novel switching approach used permits constant uninterrupted measurement excurrent airstream allowing frequent measurements incurrent airstream demonstrate accuracy approach present results validation trials compared existing system metabolic carts well results standard propane combustion tests
members serine family site specific dna recombinases use unusual constellation amino acids catalyze formation resolution covalent protein dna intermediate recent high resolution structure catalytic domain sin particularly well characterized family member provided detailed view catalytic site determine enzyme might protonate stabilize leaving group strand cleavage reaction examined replacing oxygen sulfur affected cleavage rate mutant enzymes facilitate direct comparison cleavage rates key experiments used suicide substrates prevented religation cleavage catalytic defect associated mutation one six highly conserved arginine residues arg sin partially rescued phosphorothiolate substrate conclude arg important role stabilizing leaving group prime candidate general acid protonates good agreement position occupies high resolution structure active site sin
membrane type matrix metalloproteinase mmp implicated pericellular proteolysis together tissue inhibitor matrix metalloproteinases timp activation pro matrix metalloproteinase cell surface expressed cell surface either activated proenzyme soluble form mmp smt mmp previously identified periprosthetic tissues fluid patients loose arthroplasty endoprostheses aim study examine periprosthetic tissues fluids patients loose arthroplasty endoprostheses well tissues fluids patients disorders presence smt mmp investigate activation state possible role antibody mmp protein molecular mass similar kda detected western blotting samples tested representing soluble form mmp ascribed alternative splicing northern blotting showed one transcript various biochemical methods shown species occurs latent form bearing terminal prodomain additionally bound timp appeared bound via terminal domain site different active site cell elisa immunohistochemical analysis revealed besides fibroblasts cells inflammatory epithelial endothelial giant cancer cells express mmp plasma membrane proenzyme taking account proteolytic abilities mmp latent smt mmp timp complex could considered new interstitial collagenase however exact role production mechanism cell origin complex remain elucidated
mesangial modeling mesangial cell migration features several glomerular diseases including mesangiocapillary glomerulonephritis vitro investigations recently identified adam multidomain adamalysin central migration current study used array technology investigate expression genes migrating cells identified pleiotrophin ptn platelet derived growth factor alpha polypeptide chain colony stimulating factor four members tumor necrosis factor alpha superfamily major genes upregulated transcriptional induction ptn confirmed reverse transcription polymerase chain reaction northern blotting induction protein western blotting immunohistochemical localization ptn observed associated mesangial hillocks confluent cultures contrast models migration migrating cells highest expression cell associated ptn ptn protein less evident however conditioned medium mcs treatment heparanase removed ptn cells suggesting localization owing association heparan sulfates cell surface extracellular matrix first description expression ptn human mcs data suggest rapidly induced cells triggered migrate result induction currently investigation
mesenchymal stem cells mscs recently described home brain tumors integrate tumor associated stroma understanding communication cancer cells mscs become fundamental determine whether msc tumor interactions exploited vehicle therapeutic agents considered target intervention therefore investigated whether conditioned medium adipose derived stem cells adscs modulate glioma tumor cells analyzing several cell biology processes vitro rat glioma cells treated adscs cell proliferation cell cycle cell viability cell morphology adhesion migration expression epithelial mesenchymal transition emt related surface markers analyzed adscs alter cell viability cell cycle growth rate glioma cells increased migratory capacity moreover cells treated adsc showed reduced adhesion underwent changes cell morphology regulation emt associated markers vimentin mmp nras also observed following treatment adsc findings demonstrate paracrine factors released adscs able modulate glioma cell biology therefore adsc tumor cell interactions tumor microenvironment must considered design clinical application stem cell therapy
metabolomics targets extensive characterization quantitation global metabolites endogenous exogenous sources emerged novel technological avenue advance field precision medicine principally driven genomics oriented approaches particular metabolomics revealed cardinal roles environment exerts driving progression major diseases threatening public health herein existent potential applications metabolomics two key areas precision cardiovascular medicine critically discussed use metabolomics unveiling novel disease biomarkers pathological pathways contribution metabolomics cardiovascular drug development major issues concerning statistical handling big data generated metabolomics well interpretation briefly addressed finally need integration various omics branches adopting multi omics approach precision medicine discussed copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
metagenomics opened vast pool genes putative yet uncharacterized enzymes widens knowledge enzyme diversity world discloses new families clear classification still needed exemplified glycoside hydrolase family proteins herein describe enzyme glya resident microbial communities strained ruminal fluid enzyme glucosidase xylosidase also shows galactosidase fucosidase arabinofuranosidase arabinopyranosidase activities short cello xylo oligosaccharides sophorose gentibiose among preferred substrates large polysaccharide lichenan also hydrolyzed glya determination crystal structure enzyme combination deletion site directed mutagenesis allowed identification unusual domain composition active site architecture complexes glya glucose galactose xylose allowed picturing catalytic pocket illustrated molecular basis substrate specificity hydrophobic platform defined residues trp trp located highly mobile loop appears able allocate differently linked bioses glya includes additional terminal domain previously unobserved members crystallization full length enzyme unsuccessful therefore small angle ray experiments performed investigate molecular flexibility overall putative shape study provided evidence glya defines new subfamily proteins novel permuted domain topology phylogenetic analysis indicates topology associated microbes inhabiting digestive tracts ruminants animals feeding chemically diverse plant polymeric materials
metagenomics robust interdisciplinary approach studying microbial community composition function dynamics typically involves core molecular biology microbiology ecology statistics computational biology exciting outcomes anticipated studies include unraveling complex interactions characterize ecological milieu microbial communities diverse habitats metagenomes reported include human guts caterpillar guts thermal vents oceans ore deposits polar caps even soils adhere plant roots knowledge generated metagenomic projects tremendous potential benefit human health agriculture ecosystem functions article provides brief history technical advances metagenomics including dna sequencing methods case studies specific example provided microbial metagenomes found roots native grass species family poaceae grow degraded lands undergoing revegetation
methicillin resistant staphylococcus aureus mrsa major cause infection health care hospital community settings global health concern purpose study determine antibiotic susceptibility pattern distribution circulating molecular types mrsa burn hospital tehran capital iran month study period staphylococcus aureus isolates assessed isolates subjected susceptibility testing using disk diffusion method polymerase chain reaction pcr detection meca fern nuc genes presence pvl tst encoding genes determined pcr method mrsa isolates genotyped multilocus sequence typing mlst spa typing sccmec typing agr typing presence meca gene confirmed staphylococcus aureus isolates antimicrobial susceptibility testing revealed high resistance rate ampicillin tetracycline erythromycin rates resistance remaining antibiotics tested varied high level resistance mupirocin confirmed mrsa strains isolated burn patients multi drug resistance observed isolates sixteen mrsa isolates harbored pvl encoding genes majority mrsa strains carried sccmec iii sccmec iii common genotype followed sccmec iii sccmec sccmec sccmec iii mupirocin resistant mrsa isolates belonged sccmec sccmec sccmec iii sccmec iii clones results showed genetically diverse strains mrsa circulating burn hospitals relatively high prevalence sccmec iii clone findings support need regular surveillance mrsa determine distribution existing mrsa clones detect emergence new mrsa clones elsevier ltd rights reserved
methyltransferases mtases form large family enzymes methylate diverse set targets ranging three major biopolymers small molecules mtases use cofactor adenosyl methionine adomet methyl source recent years significant efforts toward development adomet analogues aim transferring moieties simple methyl groups two major classes adomet analogues currently exist doubly activated molecules aziridine based molecules employs different approach achieve transalkylation rather transmethylation review discuss various strategies labelling functionalizing biomolecules using adomet dependent mtases adomet analogues cover synthetic routes adomet analogues stability biological environments application transalkylation reactions finally perspectives presented potential use adomet analogues biology research epi genetics nanotechnology
mexican lime citrus aurantifolia swingle transformed constructs contained chimeric promoter gus gene fusions phloem specific rolc promoter agrobacterium rhizogenes arabidopsis thaliana sucrose symporter atsuc gene promoter arabidopsis thaliana rice tungro bacilliform virus rtbv promoter sucrose synthase rss gene promoter oryza sativa rice histochemical beta glucuronidase gus analysis revealed vascular specific expression gus protein citrus rtbv promoter efficient promoter study rss promoter could drive low levels gus gene expression citrus results validated reverse transcription real time polymerase chain reaction northern blotting southern blot analysis confirmed stable transgene integration ranged single insertion four copies per genome use phloem specific promoters citrus allow targeted transgene expression antibacterial constructs designed battle huanglongbing disease hlb citrus greening disease associated phloem limited gram negative bacterium
mhm chicken chromosome linked locus methylated transcriptionally silent male cells hypomethylated transcribed long non coding rna female cells mhm implicated localised dosage compensation sex determination chicken embryo direct evidence lacking investigated potential role mhm chicken embryonic development using expression analysis retroviral mediated mis expression embryonic stages mhm expressed females northern blotting showed sense antisense strands mhm locus transcribed sense strand abundant whole mount situ hybridization confirmed sense rna present developing female embryos notably gonads limbs heart branchial arch brain within cells mhm rna localized nucleus antisense transcript lowly expressed cytoplasmic localization cells mis expression mhm sense antisense sequences results overgrowth tissues transcripts predominantly expressed includes altered asymmetric ovarian development females males mhm mis expression impairs gonadal expression testis gene dmrt mhm sense antisense mis expression cause brain abnormalities mhm sense causes increase male biased embryo mortality results indicate mhm role chicken normal embryonic development including gonadal sex differentiation elsevier inc rights reserved
mice humans branched common ancestor approximately million years ago despite mice routinely utilized animal models human disease drug development inexpensive easy handle relatively straightforward genetically manipulate led breakthroughs understanding genotype phenotype relationships identification therapeutic targets translation beneficial responses therapeutics mice humans always successful large part differences may attributed variations alignment protein expression signaling immune systems mice humans well established inbred strains laboratory mouse vary immune response patterns result genetic mutations polymorphisms arising intentional selection research relevant traits even closely related substrains vary immune response patterns result genetic mutations polymorphisms arising genetic drift article reviews differences mouse human immune system inbred mouse strains shares examples differences impact usefulness mouse models disease
michelia yunnanensis franch traditional ornamental aromatic medicinal shrub endemic yunnan province southwest china although species large distribution pattern abundant yunnan province populations dramatically declining overexploitation habitat destruction studies genetic variation demography endemic species necessary develop effective conservation management strategies generate knowledge used pairs universal cpdna markers pairs microsatellite markers assess genetic diversity genetic structure demographic history yunnanensis populations calculated total alleles polymorphic loci haplotypes combined cpdna yunnanensis populations showed high genetic diversity nuclear markers cpdna markers low genetic differentiation geographical structure found among yunnanensis populations genetic distance geographic distance correlated indicated geographic isolation primary cause low genetic differentiation yunnanensis additionally yunnanensis populations contracted similar years ago recent expansion occurred current populations results indicated high genetic diversity species within populations holds promise effective genetic resource management sustainable utilization thus suggest conservation management yunnanensis address exotic overexploitation habitat destruction
microarrays quantitatively measure expression thousands genes simultaneously also powerful tools examine expression specific genes different tissues cell types complement methods used detect gene expression transcript level including northern blotting pcr study uses oligonucleotide microarray expression profiling compare maize beta tubulin tub gene expression transcript level different tissues various stages development adds known maize beta tubulin expression maize least nine beta tubulin genes expressed presence multiple tub genes suggests could evolved provide fine control expression even distinct biological physiological properties plant supported differential expression transcript level maize beta tubulins different tissues development following work added evidence maize beta tubulin gene differential expression regulation based oil microarray data beta tubulins exhibit statistically significant differences transcript abundance day old seedling shoots immature ears dap embryos dap endosperm dap endosperm also different expression patterns many tubulin genes within tissues studied plant develops may use beta tubulins different amounts specific tissues tubulins may even interact differently proteins present developmental stages immature ears tub tub higher transcript abundances comparisons expression patterns indicate tub tub similar expression patterns may result similar transcriptional regulation highest transcript abundance two genes occurs developing seedling shoots tub tub transcripts also detected first time maize endosperm chapter describes variety methods array analysis tubulin gene expression well important considerations taking oil type work
microbial nitrilases biocatalysts interest enzyme produced using various inducers exhibits altered substrate specificity great interest bioprocess development aim present study investigate nitrilase producing alcaligenes faecalis mtcc iict ability transform various nitriles presence different inducers optimization various parameters maximum enzyme production activity production faecalis mtcc iict nitrilase optimum glucose acrylonitrile nitrilase activity faecalis mtcc iict optimum degrees enzyme stable degrees nitrilase enzyme produced using different inducers investigated substrate specificity enzyme hydrolyzed aliphatic heterocyclic aromatic nitriles different substitutions acrylonitrile preferred substrate similar well inducer benzonitrile hydrolyzed almost twofold higher relative activity acrylonitrile used inducer versatile nitrilase producing faecalis mtcc iict exhibits efficient conversion aliphatic aromatic nitriles aromatic nitriles show much affinity towards nitrilase faecalis hydrolyzed effectively nitrilase producing organism studies progress exploit organism synthesis industrially important compounds
microbiological deterioration observed historic collection retouched glass plate negatives collection came burnt manor house belonged brandys family world war ilnd photographs taken end century collection consists glass plate negatives examined possible presence microorganisms current state negatives indicated collection may flooded initially viability microorganisms plates examined using luminescence adenosine phosphate assay fungi isolated identified molecular biology methods trichoderma longibrachiatum hypocrea aspergillus versicolor penicillium historic negatives covered protective varnish layer impact isolated fungi test negative plates covered dammar sandarac varnishes gelatine image layer examined effective degradation gelatine emulsion longibrachiatum investigated microorganisms quickly decomposed silver image gelatine layer covered varnish opposite slower decomposition silver image gelatine layer covered sandarac dammar varnishes induced luminescence observation confirmed microorganisms quickly decomposed gelatin layer covered varnish cracking varnish result fungal activity within gelatin however fungi also attacked varnish elsevier ltd rights reserved
microneedles mns micron scale polymeric metallic structures offer distinct advantages vaccines efficiently targeting skin resident immune cells eliminating injection associated pain improving patient compliance advantages along recent studies showing therapeutic benefits achieved using traditional intradermal injections human cancer patients suggest delivery might enhance cancer vaccines immunotherapies recently developed new class polyelectrolyte multilayers based self assembly model peptide antigens molecular toll like receptor agonists tlra ultrathin conformal coatings reasoned immune polyelectrolyte multilayers ipems might useful platform assembling cancer vaccine components arrays intradermal delivery substrates using conserved human melanoma antigens potent tlra vaccine adjuvant cpg show ipems assembled mns automated fashion films prepared layers approximately thick provide cancer vaccine cargo loading cell culture ipem cargo released mns internalized primary dendritic cells promotes activation cells expands cells coculture mice application ipem coated mns results codelivery tumor antigen cpg skin expanding tumor specific cells initial applications resulting larger memory recall responses subsequent booster application study support mns coated pems built tumor vaccine components well defined modular system generating tumor specific immune responses enabling new approaches explored combination checkpoint blockade combination cancer therapies
microparasites play important role demography ecology evolution pacific salmonids salmon stocks continue decline impacts global climate change fish populations become apparent greater understanding microparasites wild salmon populations warranted used high throughput quantitative pcr qrt pcr rapidly screen adult chinook salmon five geographically genetically distinct groups mostly returning tributaries fraser river microparasite taxa detected microparasite species four previously documented chinook salmon four previously detected salmonids fraser river comparisons microparasite load blood plasma variables revealed positive associations flavobacterium psychrophilum cryptobia salmositica ceratonova shasta physiological indices suggestive morbidity include comparison findings microparasite taxa previous knowledge distribution british columbia
microrna mir small rna unknown function identified several plants deep sequencing study showed small rna authentic mirna analyzing structure precursor stem loop containing newly identified mir sequence confirmed result northern blotting analysis used race identify one target genes gmrpla cleaved mir mir site cleaved mir located first exon gmrpla site cleaved mir located second exon expression level mir higher leaves roots stems contrast lowest level gmrpla expression leaves highest root results indicate mirna regulate mirna cleave target gene plants level gmrpla mrna regulated mir
microrna plays crucial role progression many carcinomas signaling pathways mir modulates carcinogenesis still unknown also mir associated molecular pathogenesis never studied esophageal squamous cell carcinoma escc herein aimed examine expression functional roles mir escc well influences clinicopathological features patients escc expression mir investigated escc tissues escc cell lines using quantitative real time polymerase chain reaction vitro effects mir cellular process studied followed overexpression mir western blot immunofluorescence techniques used identify interacting targets mir escc mir expression significantly reduced escc compared nonneoplastic esophageal tissues patients low mir expression showed different histological grading cancer survival rates compared patients high mir expression overexpression mir escc cell lines induced remarkable reductions cell proliferation barrier penetration colony formation compared control wild type counterparts also mir activated foxo klf transcriptional axis escc addition mir overexpression increased protein expression led reduced cancer cell growth conclude reduced expression mir escc vitro analysis confirmed tumor suppressor properties mir modulating foxo klf signaling pathway changes mir expression may impacts clinical pathological parameters escc well management patients escc elsevier inc rights reserved
micrornas mirnas endogenous small non coding rnas regulate gene expression posttranscriptional level might regulate tolerance abiotic stress however studied tradescantia bnl clone important bio indicator measuring effect radiation date gamma irradiation gamma responsive mirnas expressions patterns plants response gamma stress reported yet therefore putative gamma responsive mirnas cdna library tradescantia radiation stress predicted study using comprehensive genomic approaches identified mirnas belonged different mirna families quantitative real time polymerase chain reaction qrt pcr analysis five randomly selected mirnas confirmed responsiveness gamma stress target prediction revealed mirnas targeted genes involved stress tolerance regulation light response redox systems signaling pathways dna repair transcription factors coordinated reverse expression changes mirnas target genes validated predicted mirnas could gamma responsive likely directly involved stress regulatory networks tradescantia altogether results provide novel insights understanding molecular mechanisms mirnas involved plant response gamma
micrornas mirnas play crucial role tissue development pathology many diseases however effects roles mirnas development semen abnormalities infertile males yet investigated study analyzed compared mirna expression profiles abnormal semen infertile males normal semen healthy males using mirna microarray total mirnas differentially expressed abnormal semen infertile males normal semen healthy males differential expression selected mirnas validated real time qrt pcr northern blotting mir mir mir mir mir mir mir upregulated fold change mir mir mir mir mir mir downregulated fold change semen infertile males semen abnormalities conclusion study provides new insights specific mirnas arc associated semen abnormalities infertile males
microscopic cell image analysis indispensable cell biology images cells easily degrade due optical diffraction focus shift results low signal noise ratio snr poor image quality hence affecting accuracy cell analysis identification quantitative analysis cell images restoring blurred images improve snr first step parameter estimation method defocused microscopic cell images based power law properties power spectrum cell images proposed circular radon transform crt used identify zero mode power spectrum parameter crt curve initially estimated improved differential evolution algorithm following parameters optimized gradient descent method using synthetic experiments confirmed proposed method effectively increased peak snr psnr recovered images high accuracy furthermore experimental results involving actual microscopic cell images verified superiority proposed parameter estimation method blurred microscopic cell images method terms qualitative visual sense well quantitative gradient psnr society photo optical instrumentation engineers spie
mitochondrial diseases diverse group inherited acquired disorders result inadequate energy production caused inheritable genetic mutations acquired somatic mutations exposure toxins including prescription medications normal mitochondrial physiology responsible part aging process free radical production within mitochondria results lifetime burden oxidative damage dna especially mitochondrial dna turn replicate mutational burden future copies lipid membranes primary mitochondrial diseases caused mutations genes encode mitochondrial structural enzymatic proteins proteins required mitochondrial assembly maintenance number common adult maladies associated defective mitochondrial energy production function including diabetes obesity hyperthyroidism hypothyroidism hyperlipidemia mitochondrial dysfunction demonstrated many neurodegenerative disorders including alzheimer disease parkinson disease amyotrophic lateral sclerosis cancers polymorphisms mitochondrial dna linked disease susceptibility including death sepsis survival head injury considerable overlap symptoms caused primary mitochondrial diseases illnesses affect mitochondrial function caused primary mutations well disorders mimic mitochondrial diseases caused identified mutations evaluation disorders complex expensive without false negative false positive results mislead physician common heritable mitochondrial disorders well described literature overlooked many clinicians uneducated disorders general evaluation classic mitochondrial disorders become straightforward clinician recognized phenotype orders appropriate confirmatory testing however majority patients referred mitochondrial evaluation clear presentation allows rapid identification testing article provides introductory comments mitochondrial structure physiology genetics focus presentation evaluation adults mitochondrial symptoms may primary mitochondrial disease
mitochondrial dysfunction reported several diseases including diabetes cancer skeletal muscle disorders neurodegenerative diseases wolfram syndrome several different methods evolved study mtdna damage including southern blotting oxog damage comprehensive scanning mitochondrial genome rflp ttge analyses however approaches require large amounts dna labor intensive use polymerase amplification long dna products lrpcr described several groups recently summarized van houten group underlying basis use dna polymerases capable generating long dna products rationale lesion strand breaks base modifications apurinic sites stop thermostable dna polymerase method band density pcr product quantified either southern blotting binding fluorescent dye although latter approach still limited use study gene expression semi quantitative realtime pcr analysis largely supplanted direct application real time pcr lrpcr made difficult low processivity polymerization rates dna polymerases used sybr green inhibition dna amplification modified lrpcr protocol use commercially available pfuultra fusion dna polymerase real time determination mitochondrial dna amplification means simplify improve accuracy quantification mtdna damage elsevier mitochondria research society rights reserved
molecular imaging agents ability non invasively visualize characterize quantify molecular biology disease recent advances nuclear probe development particularly pet radiotracers generated many new imaging agents precise molecular targets specificity pet probes may utilized biomarkers objectively interrogate evaluate pathology whereas current indications pet imaging predominately confined staging restaging malignancy utility pet greatly expands utilized biomarker topic review imaging biomarker pet may used measure target expression select subsets patients would benefit targeted therapy measure early treatment response predict therapeutic efficacy relate tumor response survival review discuss application radiotracers targeted cancer therapy particular attention given new radiotracers evaluated recently completed clinical trials current potential clinical utility diverse roles pet clinical trails drug development also examined elsevier ireland ltd rights reserved
monitored anesthesia care mac increasingly used provide patient comfort diagnostic minor surgical procedures drugs used setting cause profound respiratory depression even therapeutic concentration range titration effect suffers difficulty predict adequate analgesia prior application stimulus making titration continuously measurable side effect attractive alternative exploiting fact respiratory depression analgesia occur similar drug concentrations suggest administer opioids propofol mac using feedback control system transcutaneously measured partial pressures tcco controlled variable investigate dosing paradigm developed comprehensive model human metabolism cardiorespiratory regulation including compartmental pharmacokinetic pharmacodynamic model fast acting opioid remifentanil model simulations good agreement ventilatory experimental data presence absence drug closed loop simulations show controller maintains predefined target face surgical stimulation variable patient sensitivity prevents dangerous hypoventilation delivers concentrations associated analgosedation proposed control system mac could improve clinical practice titrating drug administration surrogate endpoint actively limiting occurrence hypercapnia hypoxia
immune cell communication takes place intercellular transfer cytokines contact dependent interaction surface receptors immunological synapses issue european journal immunology gardell parker eur immunol point new hybrid mechanism cell delivery help cells based contact dependent cdl transfer transfer process specificity cell contact dependent antigen dependent expression also required cell surface capture cdl presented cell studies needed confirm phenomenon vivo test role transferred cdl aspects cell help study provides exceptional take point makes excellent use mouse genetics work possible rules cells able order help
patients thyroid cancer evolve well current therapies however patients present recurrent disease eventually die anti inflammatory immunosuppressive cytokine contribute immune escape neoplastic cells aimed investigate molecular marker improve clinical management patients thyroid cancer retrospectively studied patients follicular cell derived thyroid cancer attended institution including classic papillary thyroid carcinomas follicular variant papillary thyroid carcinomas poorly differentiated thyroid carcinomas follicular thyroid carcinomas patients treated according current guidelines followed months additionally studied samples non malignant tissues investigated expression tumor cells semiquantitative quantitative methods malignant tissues presented higher positivity non malignant samples tumors extrathyroidal invasion diagnosis presented higher levels positivity tumors without extrathyroidal invasion observed positive correlation tumor size positivity correlation coefficient patients positivity median presented lower relapse free survival rate compared patients whose tumors presented positivity median suggest simple ihc analysis could help selecting patients would benefit intensive approach
much effort devoted metabolic engineering klebsiella pneumoniae however knowledge actual expression level promoters used pneumoniae limited study expression levels three promoters compared systematically using lacz reporter gene different carbon sources pneumoniae results showed although promoters ptac designed escherichia coli functional appeared efficient induction repression ratio ptac decreased extremely pneumoniae basal level ptac lacz expression reached fold higher compared medium indicating ptac used efficient constitutive promoter well efficient induced promoter pneumoniae different carbon sources medium newly constructed endogenous constitutive pbud proved stable weak promoter basis data set pbud ptac promoters could meet broad range orders magnitude gene expression needed engineered pneumoniae glycerol based medium international union biochemistry molecular biology inc
multiplex reverse transcription polymerase chain reaction pcr pcr protocols developed subsequently evaluated effectiveness detecting simultaneously single mixed infections sheep goats specific primers three dna viruses three rna viruses including foot mouth disease virus fmdv bluetongue virus btv peste des petits ruminants virus pprv sheeppox virus sppv goatpox virus gtpv orf virus orfv used testing procedure single nucleic acid extraction protocol adopted simultaneous extraction rna dna viruses multiplex pcr consisted two step procedure included reverse transcription rna virus multiplex pcr viral cdna dna multiplex pcr assay shown sensitive could detect least viral genomic dna rna mixture six viruses reaction assay also highly specific detecting one viruses various combinations specimens thirty seven clinical samples collected sheep goats detected among forty three samples tested uniplex multiplex pcr showing highly identification results sensitivity specificity multiplex pcr useful approach clinical diagnosis mixed infections dna rna viruses sheep goats reaction elsevier rights reserved
murg essential bacterial glycosyltransferase enzyme pseudomonas aeruginosa performing one key membrane steps peptidoglycan synthesis catalyzing transfer acetyl glucosamine glcnac donor substrate udp glcnac acceptor substrate lipid solved crystal structure complex pseudomonas aeruginosa murg udp glcnac compared previously solved complex coli structure reveals large scale conformational change relative orientations terminal domains effect widening cofactor binding site displacing udp glcnac donor results suggest new opportunities design potent inhibitors peptidoglycan biosynthesis
mutations leucine rich repeat kinase lrrk gene common genetic cause parkinson disease investigated whether lrrk mutation causes morphological functional changes nigro striatal dopamine neurons density striatal dopaminergic terminals nigral cell counts tyrosine hydroxylase protein levels well exocytotic dopamine release measured striatal synaptosomes striatal extracellular dopamine levels monitored vivo microdialysis similar month old knock mice wild type controls vivo striatal dopamine release insensitive lrrk inhibitor nov lrrk elevated membrane dopamine transporter blocker gbr however knock mice showed blunted neurochemical motor activation response gbr compared wildtype controls western blot dopamine uptake analysis revealed increase dopamine transporter levels activity striatum month old mice phenotype correlated reduction vesicular monoamine transporter levels enhancement vesicular dopamine uptake consistent greater resistance reserpine induced hypolocomotion changes observed month old mice finally western blot analysis revealed genotype difference striatal levels endogenous alpha synuclein alpha synuclein bound dopal toxic metabolite dopamine however serine phosphorylated alpha synuclein levels higher month old knock mice immunohistochemistry confirmed finding also showing genotype difference month old mice conclude mutation causes progressive dysfunctions dopamine transporters along serine phosphorylated alpha synuclein overload striatal dopaminergic terminals associated dopamine homeostasis dysregulation neuron loss might contribute intrinsic dopaminergic terminal vulnerability propose knock mice presymptomatic parkinson disease model useful investigate pathogenic interaction among genetics aging internal environmental factors leading disease
mycobacterium avium complex mac group environmentally transmitted pathogens great public health importance group known harbored amplified selected human virulent characteristics amoeba species aquatic bioffirns however quantitative microbial risk assessment qmra performed due lack dose response models resulting significant heterogeneity within even single species subspecies mac well range human susceptibilities mycobacterial disease primary human relevant species subspecies responsible majority human disease burden present drinking water biofilms soil avium subsp hominissuis intracellulare chimaera critical review published literature identified important health endpoints exposure routes susceptible populations mac risk assessment addition data sets quantitative dose response functions extracted published vivo animal dosing experiments result seven new exponential dose response models human relevant species mac endpoints lung lesions death disseminated infection liver infection lymph node lesions proposed although current physical biochemical tests used clinical settings differentiate avium intracellulare differentiating environmental species subspecies mac aid assessment health risks control mac sources framework proposed incorporating proposed dose response models susceptible population exposure route specific qmra models elsevier ltd rights reserved
mycoplasma pneumoniae common cause community acquired pneumonia cap clinical presentation mycoplasma pneumoniae pneumonia mpp varies widely genetic variability affecting host response may also influence susceptibility mpp several studies investigated association single nucleotide polymorphism snp genes risks cap however results inconsistent investigated association functional genes risks mpp including ace gstm ins del nos cypa total subjects cases controls using tetra primer allele specific polymerase chain reaction pcr sanger sequencing gene gene interactions analyzed using multifactor dimensionality reduction cumulative genetic risk score approaches results showed snps ace nos significantly associated risks mpp differences observed genotype frequencies gstm ins del cypa groups combinations ace rsd nos rst cypa rsg ace rsd nos rst contribute genetic susceptibility mpp chinese children
myeloid derived suppressor cells mdscs cause paraneoplastic leukemoid reactions facilitate tumor cell metastasis however interaction mdscs tumor cells live tissue adequately visualized accomplish task developed intravital imaging protocol observe metastasized tumor cells mouse lungs visualization activation mdscs bone marrow cells derived transgenic mice expressing forster resonance energy transfer biosensor erk implanted host mice two photon excitation microscope numerous polymorphonuclear cells pmns found infiltrate lungs tumor bearing mice mammary tumor cells implanted footpads forster resonance energy transfer imaging found erk activation pmns around tumor emboli lungs antibody array analysis implied involvement osteopontin opn metastasis cells analyzed effect opn knockdown opn knockdown cells affect cell growth markedly suppressed lung metastasis cells erk activation pmns lung intravenous injection recombinant opn restored lung metastasis opn deficient cells suggesting opn functioned paracrine manner reported erk activation neutrophils causes netosis pmns promote metastasis tumor cells netosis agreement previous reports netosis inhibitor dnase inhibited lung metastasis cells observations suggest opn promotes metastasis cells activating pmns inducing netosis
myeloid derived suppressor cells mdscs weaken antitumor immune response inhibition effector cell activity production immunosuppressive factors pathological sites well established interleukin remarkable role promotion inflammation tumor formation implicated enhancement immunosuppression mdscs consequently promotes tumor progression detailed study relationship remains elusive study confirmed promotion lewis lung carcinoma llc development also surprisingly showed could extend fate enhance immunosuppressive effect mdscs activating erk additionally effect mdscs reversed even tumors blocking erk interdicting signaling molecule erk could increase apoptosis mdscs weaken suppressive activity mdscs thereafter antitumor immunity could restored partly therefore findings offer new insights importance downstream signaling factor erk mdscs
mythimna separata walker lepidoptera noctuidae polyphagous pest nearly families kinds food industrial crops far nucleotide protein sequence information rarely available database separata strictly limiting molecular biology research insect species study carried transcriptome sequencing separata sequencing subsequent bioinformatics analysis yielded unigenes among unigenes annotated corresponding functions blasting high homologous genes database giving annotation rate several lepidopteran insects gave best matches transcriptome data gain insight mechanism insecticide resistance separata families genes encoding insecticide resistance related proteins investigated substantial numbers unigenes families identified transcriptome data selected unigenes successfully amplified expressions genes detected larval stages gut tissue consistent putative involvement insecticide resistance study provides comprehensive transcriptome data separata date also provides reference sequence information noctuidae family insects
natural killer cells effector lymphocytes innate immune system known ability kill transformed virus infected cells cells originate hematopoietic stem cells bone marrow studies mouse models revealed cell development complex yet tightly regulated process dependent intrinsic extrinsic factors development cells broadly categorized two phases lineage commitment maturation efforts better define developmental framework cells led identification several murine progenitor populations mature cell subsets defined varied set cell surface markers nevertheless relationship cell subsets remains determined classical approach studying cell development function identify transcription factors involved elucidate mechanistic action transcription factor regard recent studies provided insight mechanisms transcription factors foxo kruppel like factor gata binding protein regulate various aspects cell biology also becoming evident biology cells transcriptionally regulated also determined epigenetic alterations posttranscriptional regulation gene expression micrornas review summarizes recent progress made development focusing primarily transcriptional regulators mechanistic actions
natural tetracycline antibiotics first major class therapeutics earn distinction broad spectrum antibiotics used since wide range gram positive gram negative pathogens mycoplasmas intracellular chlamydiae rickettsiae protozoan parasites second generation semisynthetic tetracyclines minocycline doxycycline improved antimicrobial potency introduced despite emerging resistance tcs erupting four decades later third generation named tigecycline launched addition two analogues omadacycline eravacycline developed via semi synthetic fully synthetic routes respectively present clinical evaluation interestingly despite productive early work isolation streptomyces aureofaciens mutant strain produced demethyl chlortetracycline key intermediate production second third generation tcs biosynthetic approaches development productive years relatively slow tedious molecular biology approaches genetic manipulation producing actinobacteria well insufficient understanding enzymatic mechanisms involved biosynthesis significantly contributed low success biosynthetic engineering efforts however new opportunities drug development arisen thanks significant progress development affordable versatile biosynthetic engineering synthetic biology approaches importantly much deeper understanding biosynthesis mostly gained last two decades
neural progenitor cells central role development evolution vertebrate brain early brain development neural progenitors first expand numbers repeated proliferative divisions begin exhibit neurogenic divisions transparent experimentally accessible optic tectum xenopus laevis excellent model system study cell biology neurogenesis precise spatial temporal relationship proliferative neurogenic progenitors explored system construct spatial map proliferative neurogenic divisions lineage tracing individual progenitors progeny find clear spatial separation proliferative neurogenic progenitors along anterior posterior axis optic tectum proliferative progenitors located posteriorly neurogenic progenitors located anteriorly since individual progenitors repositioned toward anterior locations mature spatial separation likely reflects increasing restriction proliferative potential individual progenitors examined whether transition proliferative neurogenic behavior correlates cellular properties previously implicated regulating neurogenesis onset data reveal transition proliferation neurogenesis associated small change cleavage plane orientation pronounced change cell cycle kinetics manner reminiscent observations mammalian systems findings highlight potential use optic tectum xenopus laevis accessible system study cell biology neurogenesis wiley periodicals inc
neuroendocrine gastroenteropancreatic tumors heterogeneous group neoplasias arising neuroendocrine cells embryological gut incidence increased significantly past decades probably due improvements imaging diagnosis recent advances molecular biology translated expansion therapeutic approaches patients somatostatin analogs initially approved control hormonal syndromes recently proven inhibit tumor growth several new drugs antiangiogenics others targeting mammalian target rapamycin pathways approved treat progressive pancreatic neuroendocrine tumors nets although role nonpancreatic still controversial treatment nets requires coordinated multidisciplinary approach management localized nets primarily involves surgical resection followed surveillance however treatment unresectable metastatic disease may involve combination surgical resection systemic therapy liver directed therapies goal alleviating symptoms peptide release controlling tumor growth article review current therapeutic strategies metastatic gastroenteropancreatic nets take glimpse future approaches
neuropathy target esterase nte proposed initial target process organophosphate induced delayed neuropathy opidn human sensitive animals adult hens usually animal model experimental studies opidn however little known sequence characteristics chicken nte report cloning cdna ends chicken nte rapid amplification cdna ends race expression profiles different tissues northern blotting cloned cdna end chicken nte base pair length open reading frame orf contains termination codon tag nucleotide noncoding sequence polya sequence genbank accession chicken nte cdna end length orf contains iniation codon atg untranslated region genbank accession deduced proteins cdna ends high degree homology humans mouse nte amino acid level chicken nte suggested transmembrane protein transmembrane helix prediction deduced terminal sequence chicken nte gene expressed transcript different tissues including brain kidney liver testis moreover mrna expression chicken nte highest brain mrna levels chicken nte testis kidney liver brain respectively results helpful cloning chicken full length nte gene elsevier ireland ltd rights reserved
neutrophils abundant leukocyte human circulation recognized part immune reaction cancer last years understanding neutrophils possess dual role cancer development emerged tumor progression number neutrophils increase phenotype change advanced cancer find several sub populations circulating neutrophils possessing different characteristics maturity tumor cytotoxicity immune suppression one important sub population circulating neutrophils granulocytic myeloid derived suppressor cells mdsc differencing mdsc sub populations neutrophils circulation complex controversial task clear definitions differences granulocytic sub populations herein review differences described thus far mdsc circulating neutrophils compare morphology surface markers function prognostic importance different tumor related circulating neutrophils described others discuss possible relations different sub populations source fate lastly suggest nomenclature try encompass full range circulating neutrophils cancer elsevier gmbh rights reserved
new delhi metallo beta lactamase ndm producing enterobacteriaceae disseminated rapidly throughout world poses urgent threat public health previous studies confirmed bla ndm gene typically carried plasmids rarely chromosome discovered multidrug resistant escherichia coli strain originating urine sample containing bla ndm gene transfer either conjugation electrotransformation confirmed possibility chromosome location pulsed field gel electrophoresis pfge xbai pfge followed southern blotting determine genomic background bla ndm genome completely sequenced compared reference genomes results study revealed isolate consists mbp chromosome three plasmids epidemic clone sequence type shows identity escherichia coli genbank accession lacks blandm gene surrounding structure bla ndm gene embedded chromosome along two tandem copies insertion sequence common region iscr element sul arr cat bla ndm bleo iscr appears intact plasmid proteus mirabilis genbank accession genomic context indicates iscr element mediated bla ndm transposition single source plasmid chromosome study first report enterobacteriaceae strain harboring chromosomally integrated bla ndm directly reveals vertical spreading pattern gene close surveillance urgently needed monitor emergence potential spread strains harbor bla ndm
new developments stem cell biology offer alternatives reconstruction critical sized bone defects one developments use induced pluripotent stem ips cells stem cells similar embryonic stem cells generated adult somatic cells therefore raise ethical concerns proper characterization ips derived osteoblasts important future development safe clinical applications cells reason differentiated mouse ips cells toward osteoblasts using osteogenic medium compared functionality immunocytochemical analysis showed significant expression bone markers osteocalcin collagen type osteoblasts differentiated ips cells days vitro mineralization assay confirmed functionality osteogenically differentiated ips cells gene expression arrays focusing osteogenic differentiation performed order compare gene expression pattern differentiated undifferentiated cells ips cells observed significant upregulation osteogenesis related genes runx osteopontin collagen type tnfsf csf alkaline phosphatase upon osteogenic differentiation ips cells validated expression key osteogenic genes runx osteopontin osteocalcin collagen type osterix differentiated undifferentiated ips cells means quantified real time polymerase chain reaction conclude ips cells similar osteogenic differentiation capacities well gene expression patterns
nfkb component canonical kappa pathway recently reported mutated limited number cvid patients cvid associated mutations nfkb non canonical pathway previously shown impair cell cytotoxic activity although biological function nfkb non human cells reported role nficb mutations human cell biology disease investigated yet decided therefore evaluate role monoallelic nfkb mutations human cell maturation functions show nfkb mutated cells present impaired maturation defective cytotoxicity reduced ifn gamma production upon vitro stimulation furthermore human activated nfkb mutated cells fail regulate expression activating marker nkp show reduced proliferative capacity data suggest nfkb plays essential novel role human cell maturation effector functions elsevier inc rights reserved
nitrogen levels modulate effectiveness clubroot resistance isolate host specific manner qtl detected high low nitrogen effects altered clubroot caused plasmodiophora brassicae one damaging diseases oilseed rape known affected nitrogen fertilization however genetic factors involved clubroot resistance characterized nitrogen limiting conditions study aimed assess variability clubroot resistance different nitrogen levels characterize impact nitrogen supply genetic resistance factors linkage analyses genome wide association study conducted detect qtl clubroot resistance evaluate sensitivity nitrogen clubroot response set diverse oilseed rape accessions lines derived cross darmor bzh resistant yudal susceptible studied greenhouse high low nitrogen conditions following inoculation brassicae isolates resistance isolate controlled major qtl small effects qtl qtl detected high low nitrogen effects altered clubroot resistance isolate greater low supply versus high supply new sources resistance found among oilseed rape accessions low high conditions results discussed relative literature crop improvement perspective
methylation lysine arginine residues emerged major mechanism transcriptional regulation eukaryotes humans epsilon methyllysine residue demethylation catalysed two distinct subfamilies demethylases kdms flavin dependent kdm subfamily oxoglutarate dependent jmjc subfamily employ oxidative mechanisms modulation histone methylation status proposed important epigenetic regulation substantial medicinal potential treatment diseases including cancer genetic disorders article provides introduction enzymology kdms therapeutic possibilities challenges associated targeting followed review reported kdm inhibitors mechanisms action kinetic structural perspectives article part special issue entitled methylation multifaceted modification looking transcription beyond elsevier rights reserved
nonribosomal peptides polyketides diverse group natural products complex chemical structures enormous pharmaceutical potential synthesized modular nonribosomal peptide synthetase nrps polyketide synthase pks enzyme complexes conserved thiotemplate mechanism report thewidespread occurrence nrps pks genetic machinery across three domains life discovery gene clusters organisms examining total genomes gene clusters display extraordinarily diverse organizations total hybrid nrps pks clusters found surprisingly bacterial gene clusters lacked modular organization instead catalytic domains mostly encoded separate proteins finding common occurrence nonmodular nrps differs substantially current classification sequence analysis indicates evolution nrps machineries driven combination common descent horizontal gene transfer identified related siderophore nrps gene clusters encoded modular nonmodular nrps enzymes organized gradient higher frequency nrps pks gene clusters detected bacteria compared archaea eukarya commonly occurred phyla proteobacteria actinobacteria firmicutes cyanobacteria bacteria phylum ascomycota fungi majority nrps pks gene clusters unknown end products highlighting power genome mining identifying novel genetic machinery biosynthesis secondary metabolites
nonsyndromic cleft lip without cleft palate nscl common craniofacial birth defect humans affecting live births malformation complex etiology multiple genes several environmental factors influence risk least dozen different genes confirmed associated risk nscl previous studies however known genetic risk factors fully explain observed heritability nscl several authors suggested gene gene interaction may important etiology complex heterogeneous malformation tested interactions using common single nucleotide polymorphic snp markers targeted sequencing regions identified previous studies spanning genome study nscl case parent trios used package trio assess interactions polymorphic markers different genes using degree freedom test screening degree freedom test assess statistical significance epistatic interactions adjust multiple comparisons performed permutation tests significant interaction observed mafb irf case parent trios european ancestry remained significant correcting multiple comparisons however significant interaction detected trios asian ancestry
noroviruses leading cause acute gastroenteritis humans real time reverse transcription polymerase chain reaction real time pcr promising molecular method detection noroviruses study performance three taqman real time pcr assays assessed one commercially available real time pcr kit assay norovirus real time pcr kit two house real time pcr assays assay lightcycler rna master hybprobe assay realtime ready rna virus master assays showed higher sensitivity assay norovirus sensitivity dna copies gii dna standard controls assay highest efficiency genogroups cross reactivity observed among gii noroviruses rotavirus hepatitis virus poliovirus detection rates assays gii norovirus positive fecal samples significantly different however mean quantification cycle value assay gii lower assays statistical significance value three real time pcr assays could detect variety noroviruses including gii gii gii gii gii gii gii study suggests assay suitable assay detection quantification noroviruses gii due good analytical sensitivity higher performance amplify norovirus dna standard controls clinical samples
northern blotting analysis classical method analysis size steady state level specific rna complex sample short rna size fractionated gel electrophoresis transferred blotting onto membrane rna covalently bound membrane analysed hybridization one specific probes labelled subsequent detection northern blotting relatively simple perform inexpensive plagued artefacts recent developments hybridization membranes buffers resulted increased sensitivity closing gap laborious nuclease protection experiments
nowadays knowledge cellular attributes proteins important role pharmacy medical science molecular biology attributes closely correlated function three dimensional structure proteins knowledge protein structural class used various methods better understanding protein functionality folding patterns computational methods intelligence systems important role performing structural classification proteins protein sequences saved databanks characters strings numerical representation essential applying machine learning methods work binary representation protein sequences introduced based reduced amino acids alphabets according surrounding hydrophobicity index many important features hidden long binary sequences clearly displayed cellular automata images extracted features images used build classification model support vector machine comparing previous studies several benchmark datasets promising classification rates obtained tenfold cross validation imply current approach help revealing inherent features deeply hidden protein sequences improve quality predicting protein structural class
protease plays vital role replication hepatitis virus hcv bms novel linear tetra peptide alpha ketoamide inhibitor protease shows specificity hcv protease genotype genotype mutation key site hcv protease induce resistance bms greatly affects antiviral therapy efficacy hepatitis present study employed molecular dynamics simulations free energy calculations free energy decomposition explore drug resistance mechanism bms due three representative mutations free energy decomposition analysis indicates decrease binding affinity mainly attributed decrease van der waals electrostatic interactions detailed analysis calculated results observed break salt bridge residues caused mutations original reason decrease binding ability bms mutant proteases obtained results reveal drug resistance mechanism bms mutant proteases provide valuable clue designing novel potent drugs hcv protease international union biochemistry molecular biology inc
nsa cytoplasmic male sterility cms novel brassica napus male sterility system derived sinapis arvensis cytoplasm nsa cms results defective pollen production due arvensis mitochondrial gene failure incompatibility anthers requiring nuclear genes restore fertility ultramicroscopic observation anther sections concluded induction sterility begins pollen microspore mother cell stage pollen mother cells undergo first meiotic division dissociate tetrad stage tetrad stage abortion observed uninucleate pollen dysfunction mitchondrial gene leads cell vacuolization anther tapetum middle layer cells early programmed cell death pcd tapetum anther middle layer cells main reason pollen mother cell abortion due early pollen abortion sterility nsa cms stable complete southern blotting dna nsa male sterile line maintainer restorer lines well two parental lines napus zhongshuang arvensis var yeyou involved somatic hybridization suggested cytoplasm nsa cms line arvensis restorer line rearrangement parental lines nsa cms shows great potential hybrid seed production rapeseed results provide clues identify novel male sterility restorer genes well elucidate mechanism underlying interactions genes
nutritional intervention effective reducing risk neural tube defects ntds determine effects nutritional supplementation human metabolism metabonomic study carried women reproductive age subjects nutritional intervention given fortified wheat flour containing folic acid vitamin vitamin ferric sodium edetate zinc oxide months serum metabolic fingerprinting detected via ultraperformance liquid chromatography tandem time flight mass spectrometry uplc tof data acquired processed multivariate statistical analysis result revealed significant difference control intervention group twenty potential biomarkers including fructose phosphate sphingosine phosphate docosahexaenoic acid hexadecanoic acid located identified accurate mass measurement tof compounds believed functionally related anti oxidative competence vivo conclusion metabonomics study valuable approach exploring effect mechanism nutritional intervention ntd prevention copyright john wiley sons ltd
objective effect polyomavirus infection hsct recipients poorly understood methods evaluated hsct recipients polyomavirus detected nested qualitative polymerase chain reaction pcr assays urine risk factors virus virus analysed kidney liver functions infected uninfected patients compared results virus virus simian virus detected hsct recipients respectively hcmv infection found independent risk factor virus infection odds ratio transplants mismatched hla susceptible virus infection liver function virus infected subjects worse uninfected subjects conclusion must vigilant opportunistic polyomavirus infections hsct recipients especially hcmv infection mismatched hla transplant unexplained liver function deterioration observed virus infection considered
objective determine influence farm level animallevel factors seroprevalence antibodies neospora caninum associations seropositivity reproductive outcomes methods questionnaire cross sectional survey posted properties herd size beef breeding cows participated previous seroprevalence study correspondence analysis appear used previously australian studies livestock diseases used conjunction logistic regression analyse data results geographic factors increased risk seropositivity included higher rainfall north coast location herd management factors increased risk seropositivity included use bos indicus genetics cross breeding running several breeds one herd using fox control measures found protective infection caninum risk abortion fold greater individual animals seropositive caninum within herd calving rate lower herds one caninum positive animals difference abortion rate significant seropositive seronegative herds higher conclusions study confirmed previous observations increased risks caninum seropositivity located coastal subtropics styles herd management canid exposure addition suggested cross breeding proximity urban area may increase risk pet dogs may reduce risk seropositivity
objective analyse heterogeneity single cell level human mesenchymal progenitor cells methods cell populations enzymatically released knee joint synovium adult human individuals single cell derived clonal populations obtained limiting dilution serially passaged determine growth rates phenotypic analysis carried flow cytometry replicative senescence assessed senescence associated galactosidase staining telomere lengths determined semiquantitatively southern blotting telomerase activity measured using real time quantitative telomerase repeat amplification procedure culture expanded clonal populations subjected vitro differentiation assays investigate mesenchymal multipotency results clones analysed displayed wide variations proliferation rates even within donor sample time taken reach population doublings ranged days phenotype clones tested compatible mesenchymal stem cells mean telomere lengths ranged positive linear trend telomerase activity correlation proliferative rates cell senescence clones tested capable chondrogenic osteogenic differentiation though large variability potency contrast clones adipogenic conclusions report first time existence within synovium progenitor cell subsets distinct mesenchymal differentiation potency findings emphasize need strategies purify cell populations clinically desired tissue formation potentials
objective conduct replication study meta analysis involving study mtdna variants radiographic progression different cohorts worldwide including cohort hip cohort knee check initiative cohort spain methods influence haplogroups rate radiographic progression months subjects check assessed terms kellgren lawrence grade progression defined change baseline higher grade follow extended cox proportional hazard models used analyse influence mtdna variants rate radiographic knee progression subsequent meta analysis subjects following preferred reporting items systematic reviews meta analyses guidelines conducted combine data individual studies sensitivity analysis performed validate stability results results check subjects carrying haplogroup showed lowest rate radiographic knee progression hazard ratio pooled subjects within superhaplogroup showed trend bmi bilateral baseline risk factors radiographic knee progression well meta analysis reduced rate radiographic progression subjects haplogroup superhaplogroup sensitivity analysis revealed results robust conclusion mtdna variants superhaplogroup associate reduced rate radiographic progression mtdna polymorphisms superhaplogroup emerge potential complementary genetic biomarkers disease progression
objective pulp periodontal tissues well known sources mesenchymal stem cells mscs provide promising place tissue engineering regenerative medicine molecular mechanisms underlying commitment differentiation dental stem cells originate different dental tissues fully understood study compared expression levels pluripotency factors along immunological developmentally related markers culture human dental pulp stem cells hdpscs human dental follicle stem cells hdfscs human embryonic stem cells hescs materials methods experimental study isolated human dental stem cells investigated using quantitative polymerase chain reaction qpcr immunostaining fluorescence activated cell sorting facs additionally conducted gene ontology analysis differentially expressed genes compared dental stem cells pluripotent stem cells results results demonstrated pluripotency oct sox immunological tlr factors higher expressions hdfscs exception jag ged notch ratio myc nestin expressed hdpscs immunostaining oct sox myc showed cytoplasmic nucleus localization groups similar passages analysis showed majority hdfscs hdpscs populations synthesis mitosis phases cell cycle respectively conclusion study showed different status heterogeneous hdpscs hdfscs terms stemness differentiation fate cell cycle phases therefore different behaviors dental stem cells considered based clinical treatment variations
objective aim study trace possible relations hygienic status slicing utensils microbiological quality pastrami study design total pastrami retail markets visited kayseri turkey pastrami ready eat meat product commonly produced consumed sliced pastrami cutting board knife surface swabs collected pastrami retail point trace possible sources contamination methods samples analysed presence total viable counts tvc total coliforms escherichia coli members enterobacteriaceae staphylococcus aureus listeria spp addition pastrami samples analysed sulphite reducing clostridium spp toxoplasma gondii results compared target values related literatures total pastrami samples found unsatisfactory result tvc enterobacteriaceae coli aureus listeria spp listeria monocytogenes contaminations gondii positivity observed among pastrami samples none cutting board knife surface swabs found harbour tvc level cfu coli monocytogenes total coliforms cutting board knife surface swabs found exceed target value cfu respectively statistically significant correlation detected organisms pastrami slicing utensils indicating pastrami cross contaminated contact surfaces conclusion emphasis needs placed training food handlers apply good hygienic practices point pastrami sale conditions retail points must monitored inspections tightened protect public health royal society public health published elsevier ltd rights reserved
objective aim study evaluate association two haplotype tag single nucleotide polymorphisms snps tgf conotruncal heart defects ctds methods two polymorphisms tgf gene genotyped polymerase chain reaction restriction fragment length polymorphism pcr rflp ctds patients control subjects results association snp tgf ctds found frequency allele ctds patients significantly higher control subjects versus conclusion tgf gene polymorphisms may serve novel genetic marker risk ctds
objective efficacy safety collagenase clostridium histolyticum cch patients dupuytren contracture demonstrated program including two pivotal phase clinical trials cord included patients broad range disease severity analysis assessed efficacy safety cch subpopulation patients two joints affected moderate disease according british society surgery hand classification support resubmission scottish medicines consortium research design methods post hoc analysis included data patients two joints affected moderate disease treated cch randomized open label phases cord results patients received cch two trials one two joints affected moderate disease sixty seven joints treated patients received treatment one joint patients received treatment two joints patient received average injections cch per joint evaluable joints met primary endpoint clinical success reduction contracture degrees presence palpable cord joints attained clinical success observed joints reported adverse events mild moderate intensity none resulted discontinuation conclusions cord show cch well tolerated effective treatment broad population present analysis suggests cch particular value patients moderate severity disease two joints affected study limitations analysis used data randomized open label phases cord land therefore possible present comparative data subpopulation post hoc analysis relatively small patient subpopulation statistical comparisons full population considered appropriate furthermore small sample size means additional subgroup analyses example patients previous treatment number injections administered appropriate nevertheless data presented demonstrate cch well tolerated effective population managed appropriately trained individuals
objective etiology obsessive compulsive disorder ocd assumed involve interactions genetically determined vulnerability factors significant environmental features aim investigate personality trait harm avoidance experience childhood adversities contribute ocd method total patients ocd healthy comparison subjects unaffected first degree relatives patients ocd participated study harm avoidance assessed using temperament character inventory severity childhood adversities measured childhood trauma questionnaire results patients ocd relatives showed elevated levels harm avoidance compared controls furthermore patients exhibited significantly higher scores relatives linear pattern observed throughout subscales harm avoidance remained stable controlling severity depressive obsessivecompulsive symptoms regard childhood adversities patients ocd reported higher levels relatives controls conclusion results provide evidence diathesis stress model ocd patients unaffected relatives share elevated levels harm avoidance supporting role harm avoidance endophenotype ocd heightened severity childhood adversity observed patients assumed biological underpinnings findings discussed
objective objective study construct recombinant vector expressing sirna targetedly inhibiting aquaporin aqp evaluate effects aqp inhibition proliferation invasion xwlc human lung cancer cells methods obtained human aqp sequence genbank established recombinant vector expressing sirna targeting aqp transfection recombinant vectors expression aqp determined pcr western blot mts assay flow cytometry transwell assay conducted detect proliferation cell cycle process apoptosis invasion xvvlc cells activity metal matrix proteinase mmp determined gelatin zymography tumor formation vivo experiments also conducted nude mice results rna interference rnai aqp substantially suppressed xwlc cell proliferation invasion blocked cell cycle progressing promoted cell apoptosis addition activity mmp remarkably attenuated rnai group aqp rnai affect tumor formation rate nude mice reduced tumor growth conclusion inhibition aqp retarded growth invasiveness xwlc lung cancer cells decreased activity mmp elsevier inc rights reserved
objective objective describe endometrial milieu stable transplant patients healthy women levonorgestrel intrauterine system lng ius insertion study design women years age desiring lng ius insertion enrolled ratio healthy stable solid organ transplant patients first visit entailed blood draw uterine lavage endometrial biopsy followed lng ius insertion follow visit involved repeat serum draw uterine lavage endometrial biopsy cytokine levels measured uterine lavage serum quantifying inflammatory biomarkers immunohistochemistry staining performed endometrial tissue measure macrophage levels statistical analysis included nonparametric analysis compared medians marker levels intrauterine device iud insertion within group two groups results sixteen participants completed study solid organ transplant patients healthy patients serum marked changes cytokines soluble receptor levels either group iud insertion however uterine lavage increase cytokine levels post iud insertion healthy transplant women endometrial tissue evidence macrophage activity groups device insertion conclusions pilot study investigated uterine environment transplant patient population findings pointed strong local inflammatory response following lng ius insertion transplant recipients addition preliminary findings help power larger study investigate safety effectiveness iud patient population authors published elsevier inc
objective purpose present prospective cohort study monitor urine cytology samples recipients renal transplants search occurrence decoy cells degenerated inclusion bearing cells aim correlate existence cells molecular detection polyomavirus bkv dna urine material methods study included patients underwent renal transplantation patients urine tested quarterly first year post transplantation presence decoy cells degenerated cells well quantitative determination bkv load urine plasma results three hundred sixty one examinations performed patients within months attendance urine cytology results negative positive presence viral cytopathic effects depending presence bkv infection positive manifestation degenerated cells unsatisfactory analysis subtle tendency towards presence degenerated inclusion bearing cells cases virus detected voided urine however presence degenerated cells exhibited tendency bkv positivity months exclusively month trend statistically significant conclusions enough strong morphological staining elements state origin degenerated cells describe nature infection viral bacterial given cells undergoing apoptotic process post renal transplant patients
objective study aims assess frequency cytological abnormalities adolescents young women establish optimum age start screening methods retrospective study cervical cytology results obtained data center santa casa hospital sao paulo january december adopting bethesda nomenclature system cytology exams divided groups group adolescents years old group young women years old group adults comprising remaining cytology exams frequency cytological abnormalities groups compared using version epi info software programand chi square statistical test results total satisfactory cytology exams included study cytological abnormalities detected adolescent group predominantly low grade lesions young women group low grade lesions represented adult group significantly greater proportion high grade lesions noted adult group accounting approximately abnormalities detected young women group approximately adolescent group conclusions natural history hpv infection shows transient young women cases regressing within years presentation data confirm screening adolescents recommended serious cytological abnormalities cancer rare group
objective construct improved reference charts fetal long bones iranian setting compare previous studies methods present prospective cross sectional study included singleton fetuses assessed ultrasonography weeks gestation comprehensive medical genetics center shahid soltani shiraz iran may february exclusion criteria included conditions could affect fetal growth fetal long bones femur humerus tibia fibula ulna radius measured ultrasonography biometric charts produced regression models fitted estimate bone lengths models produced compared previous studies populations results singleton fetuses included femur humerus tibia fibula ulna radius biometric measurements recorded models generated predict length tibia fibula ulna radius length femur humerus demonstrated high goodness fit predicted lengths plotted actual lengths comparisons mean lengths previous studies suggested long bone length affected maternal ethnicity conclusion equations generated could used predict long bone length iranian population ethnicity considered using fetal long bone length prenatal diagnostic tool
objective detect distribution expression levels nucleotide binding oligomerization domain like receptor protein nlrp absent melanoma aim inflammasomes periapical lesions analyse possible microbial stimuli outside teeth design distribution nlrp aim inflammasomes sixteen periapical lesions investigated immunohistochemistry meanwhile relative gene expression levels nlrp aim sixteen periapical lesions three health periodontal tissue quantified real time polymerase chain reaction pcr moreover forty seven teeth without sinus tracts obtained clinic included bacterial analysis using pcr mrna levels apoptosis associated speck like protein asc caspase interleukin beta beta nlrp aim thp derived macrophages treated lipopolysaccharides lps porphyromonas also quantified real time pcr beta secretion level investigated using enzyme linked immunosorbent assay elisa results nlrp aim positively expressed periapical lesions mainly distributed inflammatory cells samples demonstrated regulation nlrp mrna also demonstrated regulation caspase mrna microbial analysis revealed porphyromonas endodontalis commonly detected species detected cases followed fusobacterium nucleatum porphyromonas gingivalis tannerella forsythia actinomyces treponema denticola actinomyces israelii prevotella intermedia enterococcus faecalis enterococcus faecium furthermore found lps gingivalis induced thp cells produce beta activate nlrp aim inflammasomes conclusions results suggest nlrp aim proteins play part pathogenesis periapical periodontitis anaerobes endodontalis gingivalis nucleatum forsythia main detected microbial stimuli might activate inflammasomes periapical tissues elsevier ltd rights reserved
objective unravel interplay hiv host cell effect hiv infection cellular gene expression investigated methods hiv infected uninfected cells screened differential display rnase protection assay finding pdsa confirmed hiv lai infected ccr hela cells also examined pdsa sirna knockdown regard hiv replication quantitative pcr elisa ltr driven beta galactosidase expression pdsa knockdown effect cellular gene expressions studied microarray analysis pdsa tissue expression determined northern blotting results regulator cohesion maintenance homolog pdsa found regulated hiv pdsa suppressed sirna hiv replication unaffected pdsa found highly expressed skeletal muscle tissue lesser degrees pancreas heart placenta lung kidney liver brain microarray analysis pdsa knockdown revealed differential gene products representing cell cycle transport protein stability regulation including genes ppa rantes pcaf tcfl previously reported interact hiv conclusion data show downregulation proliferation associated host gene pdsa suggest role pdsa hiv induced cellular pathogenesis viral replication copyright karger basel
objectives aimed confirm presence pepsina nasal secretions tissues chronic rhinosinusitis crs patients reveal relationship crs laryngopharyngeal reflux lpr study design cross sectional study setting study conducted department oto rhino laryngology west china hospital sichuan university subjects methods total crs patients without nasal polyps crswnp crssnp respectively normal controls enrolled study investigated expression pepsina nasal tissues secretions blood plasma subjects immunohistochemical staining western blot elisa additionally expressions muc mucac mucb muc pepsinogena nasal tissue evaluated quantitative real time polymerase chain reaction results immunohistochemistry western blot revealed pepsina expression levels turbinate mucosa crswnp crssnp patients largely restricted epithelial layer glandular mucous cells nasal tissues significantly higher controls polyp tissues crswnp patients addition concentration pepsina nasal secretions significantly increased crswnp crssnp groups compared controls although mucac mucb muc expression differed among groups correlation pepsina mucin genes found conclusion results study provided evidence association lpr crs although correlation found exist lpr mucin genes crs patients
objectives listeria monocytogenes food borne pathogen cause meningitis listerial genotype linked increasing rates unfavourable outcome time investigated listerial genetic variation relation clinical outcome meningitis methods sequenced isolates adults listerial meningitis included two prospective nationwide cohort studies whole genome sequencing evaluated associations bacterial genetic variation clinical outcome validated results screening listerial genotypes cerebrospinal fluid blood isolates patients year period dutch national surveillance cohort results identified bacteriophage philmst occurring novel plasmid plmst isolates associated unfavourable outcome patients plasmid carries benzalkonium chloride tolerance gene emrc conferring decreased susceptibility disinfectants used food processing industry isolates harbouring emrc growth inhibited higher levels benzalkonium chloride median versus higher mics amoxicillin gentamicin compared isolates without emrc transformation plmst naive strains led benzalkonium chloride tolerance higher mics gentamicin conclusions results show novel plasmid carrying efflux transporter emrc associated increased incidence listerial meningitis netherlands suggesting increased disease severity findings warrant consideration disinfectants used food processing industry select resistance mechanisms may inadvertently lead increased risk poor disease outcome kremer clin microbiol infect authors published elsevier ltd behalf european society clinical microbiology infectious diseases
objectives aim study determine relationship atherosclerosis periodontopathogenic microorganisms chronic periodontitis patients following periodontal treatment materials methods total patients included study patients diagnosed atherosclerosis chronic periodontitis formed test group remaining patients systemically healthy patients diagnosed chronic periodontitis formed control group patients nonsurgical periodontal treatment periodontopathogenic microorganism levels determined baseline months microbial dental plaque samples wbc ldl hdl plt fibrinogen creatinine crp levels determined blood samples results statistically significant reduction achieved clinical periodontal parameters following non surgical periodontal treatment test control groups following periodontal treatment wbc ldl plt fibrinogen creatinine crp levels significantly decreased hdl levels significantly increased test control groups similarly periodontopathogenic microorganism levels significantly decreased following periodontal treatment test control groups statistically significant positive correlation determined periodontopathogenic microorganism levels wbc ldl plt fibrinogen creatinine crp levels test group conclusions association crp wbc ldl plt fibrinogen creatinine amount periodontopathogenic microorganisms indicates possibility periodontal treatment could decrease risk atherosclerosis studies must conducted order results supported
objectives aim study examine relevance expression profiling genes involved action gemcitabine among patients pancreatic ductal cell adenocarcinoma pdac methods group patients underwent pancreatic resections pdac received adjuvant chemotherapy gemcitabine identified expression mrnas human equilibrative nucleoside transporter hent ribonucleotide reductase subunits rrm rrm deoxycytidine kinase dck examined quantitative real time polymerase chain reaction normalized glyceraldehyde phosphate dehydrogenase gapdh dichotomized groups low moderate high expression levels grouped tertiles results significantly better median survival times found high moderate expression levels hent months dck months well low expression rrm months cox proportional hazards model identified low expression hent hazard ratio confidence intervals dck high moderate levels rrm negative prognostic factors conclusions expression hent rrm dck genes provides important prognostic information pdac patients treated adjuvant gemcitabine
objectives purpose study investigate role novel mutant dlx odontogenic differentiation human dental pulp cells hdpcs tricho dento osseous tdo syndrome design hdpcs obtained healthy premolars stably expressing wild type dlx novel mutant dlx control vector cells generated using recombinant lentiviruses proliferation rates hdpcs hdpcs measured cck assay odonto differentiation hdpcs assessed alkaline phosphatase alp activity assay mineralization ability assessed alizarin red staining odontogenic markers including dmp dspp nes alp dlx analyzed using real time polymerase chain reaction qpcr dmp dspp expressions confirmed western blotting results cck results showed novel mutant dlx decreased proliferation rate hdpcs compared wild type dlx qpcr showed novel mutant dlx weakened odontogenic differentiation downregulating expression odontogenic genes results confirmed western blotting alp activity assay additionally alizarin red staining showed novel mutant dlx decreased mineralization hdpcs compared wild type dlx conclusions novel novo mutation dlx significantly decreases proliferation rate inhibits odontogenic differentiation mineralization hdpcs suggesting novel mutation dlx influence dentinogenesis tdo syndrome elsevier ltd rights reserved
objectives investigate whether lep lepr polymorphisms influence serum lipid levels whether polymorphisms affect efficacy simvastatin treatment chinese patients primary hyperlipidemia methods used extreme sampling approach selecting individuals top bottom adjusted lipid lowering response residuals simvastatin group good bad response total samples primary hyperlipidemia treated simvastatin orally fasting serum lipids measured baseline weeks treatment genotyping carried using polymerase chain reaction restriction fragment length polymorphism results patients good response group lepr bad response group secondary stratified analyses showed patients carrying genotype lepr gene significantly higher high density lipoprotein cholesterol levels genotype baseline among good responders consecutive days treatment simvastatin patients carrying genotype significantly larger decrease triglycerides change total cholesterol levels change compared carrying genotype among bad responders bonferroni correction results statistically significant conclusion lepr polymorphism lep could modulate efficacy simvastatin chinese patients primary hyperlipidemia
objectivesthis study investigates whether achieving complete remission undetectable minimal residual disease mrd allogeneic stem cell transplantation allo sct chronic lymphocytic leukemia cll affects outcome methodswe retrospectively studied patients transplanted cll evaluated post transplant mrd flow cytometry resultsat transplant time patients including one undetectable mrd partial response refractory disease transplant patients achieved undetectable mrd status multivariate analysis reaching undetectable mrd months transplant factor associated better progression free survival attaining undetectable mrd independently time negativity factor correlated better overall survival conclusionthus achieving undetectable mrd status allo sct cll major goal improve post transplant outcome
objective systemic lupus erythematosus sle associated premature development cardiovascular disease platelet endothelium interaction important pathogenesis cardiovascular disease study investigated platelet phenotype patients sle matched controls effect endothelial cells approach results platelet aggregability measured sle subjects antiplatelet therapy mean age years female white age sex matched controls platelets coincubated human umbilical vein endothelial cells huvecs changes gene expression assessed rna array quantitative reverse transcription polymerase chain reaction sle disease activity index ranged mean compared controls patients sle significantly increased monocyte leukocyte platelet aggregation platelet aggregation response submaximal agonist stimulation agnostic microarray huvecs cocultured sle platelets found platelet mediated effect endothelial gene pathways involved cell activation sera sle versus control subjects significantly increased activation control platelets platelet adhesion huvecs platelet induced huvec gene expression interleukin intercellular adhesion molecule proinflammatory gene expression huvecs mediated interleukin dependent pathway incubation sle activated platelets interleukin neutralizing antibody huvecs pretreated interleukin receptor antibodies attenuated platelet mediated activation endothelial cells conclusions platelet activity measurements subsequent interleukin dependent activation endothelium increased subjects sle platelet endothelial interactions may play role pathogenesis cardiovascular disease patients sle
octamer oct member pit oct unc transcription factor family required maintain self renewal pluripotency embryonic stem cells previously identified associated tumorigenesis malignant transformation numerous types cancer including hepatocellular carcinoma hcc present data shows oct enhances cancer stem cell properties increases invasion ability huh cell line increase understanding role oct hcc present study used functional genomics approach analyzed resulting transcriptional profiles identify oct dependent genes huh affymetrix genechip human genome plus arrays used determine differential gene expression profiles validated quantitative polymerase chain reaction present study found altered expression genes fold change affected multiple signaling pathways linked self renew metastasis among differentially expressed genes present study noticed key component wnt signaling pathway lymphoid enhancer binding factor lef twist family bhlh transcription factor upregulated oct whilst cadherin downregulated additional studies found nuclear beta catenin aggregation increased oct overexpressed hcc cell lines results suggest oct regulates lef active lef beta catenin dependent wnt signaling pathway promote epithelial mesenchymal transition present findings provide novel mechanistic insight important role oct hcc
olive flounder paralichthys olivaceus economically important cultured marine fish china korea japan controlling managing breeding olive flounder captivity imperative step toward obtaining sustainable supply fish aquaculture production systems therefore investigation molecular regulatory mechanism gonadal development gametogenesis species great significance aquaculture furthermore identification expression profile numerous sex related genes first step primarily understand molecular regulatory mechanism six female six male gonads obtained year old olive flounders sequenced using illumina produced data ovary testis respectively reads mapped draft genome olive flounder reads per kilobase per million fpkm gene calculated female male biased expressed genes investigated based fpkm values overall female biased male biased genes screened enrichment analysis showed terms male meiosis gamete generation fertilization spermatogenesis germ plasma enriched male biased genes addition terms cell morphogenesis involved differentiation embryonic morphogenesis plasma membrane steroid hormone receptor activity aromatase activity enriched female biased genes moreover single nucleotide polymorphisms indels identified transcriptome work largest collection gonad transcriptome data olive flounder provides extensive resource future gonadal development gametogenesis molecular biology studies species
one major features meiosis high frequency homologous recombination confers genetic diversity successive generation also ensures proper segregation chromosomes meiotic recombination initiated dna double strand breaks require many proteins including catalytic core spo regard like transcription repair etc recombination hindered compacted chromatin structure trans acting factors easily access dna inhibitory effects must alleviated prior recombination initiation indeed number groups showed chromatin around recombination hotspots less condensed using nucleases probe assess local dna accessibility describe method analyze chromatin structure recombination hotspot yeasts saccharomyces cerevisiae schizosaccharomyces pombe method combining micrococcal nuclease mnase digestion chromatin dna subsequent southern blotting expected provide information chromatin context around hotspot moreover virtue mnase preferentially targeting linker dna positions several nucleosomes surrounding hotspot also determined protocol powerful way analyze several regions interest applied purposes
one important nutrient intake values nivs average nutrient requirement anr anr defined intake value adequate half individuals group people similar characteristics used estimate prevalence adequacy serves basis individual nutrient level inlx determination adequacy complex process resulting value anr dependent criterion functional outcome chosen define nutrient adequacy nutrients multiple sites action human metabolism possible demonstrate abnormal function one parameter measured observed result inadequate intake nutrient parameters requiring nutrient appear normal within normal ranges thus depending criterion adequacy selected requirement given nutrient may lower higher intake amount harmonizing development nivs important clearly identify criterion adequacy selected rationale selection rarely available data sufficient provide dose response information select level intake half individuals demonstrate adequacy half appear demonstrate inadequacy three levels intake least one level intake requirement individuals sample one level intake requirement useful establishing level half group might considered demonstrate adequacy types human nutrient studies may used obtain data discussed well characteristics sample size needed demonstrate adequacy variation requirements also important aspect predicting levels intake defined probabilities adequacy groups develop inlx defined probability chosen analysis origins different types variability presented estimating energy requirements special case nivs important issues must considered additionally example evaluating data used establish anr vitamin effect variability requirements vitamin provided
optical microscopy single atpase fof atp synthases started years ago direct demonstration atp driven subunit rotation videomicroscopy became new exciting tool analyze conformational changes enzyme catalysis stimulated experiments technical improvements higher time resolution better angular resolution reduced viscous drag developed rapidly optics single molecule enzymology entangled benefit biochemists microscopists today several single molecule microscopy methods established including controls precise nanomanipulation individual enzymes vitro forster resonance energy transfer used simultaneous monitoring conformational changes different parts rotary motor one may become tool analysis single fof atp synthases membranes living cells breakthrough experiments critically reviewed challenges discussed future microscopy single atp synthesizing enzymes work iubmb life
optically pure butyl cyano dihydroxyhexanoate key precursor atorvastatin calcium widely used cholesterol lowering drug work strain zjb capable asymmetrically reducing butyl cyano hydroxy oxohexanoate corresponding optically pure successfully isolated soil sample identified belonging rhodotorula glutinis based morphology physiological tests rdna sequence analysis found heat treatment cell suspension degrees min significantly improved glutinis zjb stereoselectivity asymmetric bioreduction efficient degrees substrate concentration dcw cell loading size sodium lactate acting substrate optimal conditions produced diastereomeric excess value conversion moreover glutinis zjb broad substrate spectrum making potential tool valuable chiral alcohol pharmaceutical intermediates synthesis international union biochemistry molecular biology inc volume number pages
optogenetic tools allow isolated functional investigations almost signaling molecule within complex signaling pathways major obstacle controlled delivery light cell sample hence popular tools optogenetic studies microscopy based cell analyses vitro experiments flow cytometer major advantages microscope including ability rapidly measure thousands cells single cell resolution however yet widely used optogenetics present device combines power optogenetics flow cytometry led thermo flow device illuminates cells specific wavelengths light intensities temperatures flow cytometric measurements built low cost used common flow cytometers demonstrate utility characterized photoswitching kinetics dronpa proteins vivo real time protocol adapted almost optically controlled substances substantially expands set possible experiments importantly greatly simplify discovery development new optogenetic tools
organisms believed evolved circadian clocks adaptations deal cyclic environmental changes therefore hypothesized evolution constant environments would lead regression clocks however previous studies yielded mixed results evolution circadian clocks constant conditions remained unsettled topic debate circadian biology continuation previous studies reported persistence circadian rhythms drosophila melanogaster populations evolving constant light intended examine whether circadian clocks associated properties evolve differently constant light constant darkness regard assayed activity rest adult emergence oviposition rhythms melanogaster populations maintained years similar generations three different light regimes constant light light dark cycles constant darkness observed circadian rhythms three behaviors persist stocks differences circadian period differed certain aspects entrained rhythms compared controls reared rhythmic environment interestingly also observed stocks evolved significantly higher robustness power free running activity rest adult emergence rhythms compared stocks thus study addition corroborating previous results circadian clock evolution constant light also highlights contrary expected regression circadian clocks rearing constant darkness leads evolution robust circadian clocks may attributed intrinsic adaptive advantage circadian clocks pleiotropic functions clock genes traits
osteopontin opn protein generally considered play pro tumorigenic role whereas several reports demonstrated anti tumorigenic function opn tumor development opposing anti pro tumorigenic functions fully understood report host derived opn plays anti tumorigenic role transgenic adenocarcinoma mouse prostate tramp model tramp tumor transplant model tumor suppression mediated opn rag mice suggests opn dispensable adaptive immune response found host derived opn enhanced infiltration natural killer cells tramp tumors requirement opn cell migration towards tramp cells confirmed vivo cell migration assay contrast tramp cells vivo tumor development inhibited opn tumors show opn mediated cell recruitment possible low levels chemokine expression cells allow opn enhance immune cell recruitment addition demonstrating anti tumorigenic role opn tramp tumor development study also suggests contribution opn tumor development depends type tumor well source isoform opn
outer membrane proteins structurally distinct reside inner membrane play important roles bacterial pathogenicity human metabolism ray crystallography studies different outer membrane proteins revealed transmembrane portion proteins constructed either sheets less commonly helices common architecture barrel formed either single anti parallel sheet fused ends form barrel multiple peptide chains outer membrane proteins exhibit considerable rigidity stability making study ray crystallography particularly tractable number structures outer membrane proteins increases rational approach crystallization made herein analyse crystallization data outer membrane proteins compare results obtained inner membrane proteins targeted sparse matrix screen outer membrane protein crystallization presented based present analysis
past two decades significant improvement medical field elucidating underlying pathophysiology genetics addison disease adrenal insufficiency addison disease rare disease incidence cases diagnosis may delayed clinical presentation mimics gastrointestinal disorder psychiatric illness report case addison disease presenting acute pain abdomen mimicking clinical presentation acute pancreatitis
oxidation production free radicals integral part human metabolism oxidative stress related many diseases including cancer heart disease use biomarkers oxidative stress may provide evidence causal relationship oxidative damage macromolecules dna lipids proteins cancer wide variety functional assays vivo vivo include various measures dna oxidation oxidized dna bases ohdg autoantibodies oxidized dna modified comet assay lipid oxidation thiobarbituric acid reactive substances exhaled pentane ethane low density lipoprotein resistance oxidation isoprostanes protein oxidation protein carbonyls objective review discuss characteristics methodologic issues studies involving biomarkers exposure antioxidant nutrients oxidative stress status paper provides overview current knowledge oxidative dna lipid protein damage cancer incidence elsevier ireland ltd rights reserved
oxygen imaging biological cells tissues becoming increasingly important cell biology pathophysiology various hypoxia related diseases optical oxygen sensing method using luminescent probes provides useful high spatial resolution information regarding oxygen distribution living cells tissues review focuses recent advances biological oxygen measurements based phosphorescence quenching probe molecules oxygen hypoxia sensitive fluorescent probes special attention devoted metal complex probes porphyrins complexes iii complexes current knowledge regarding mechanism phosphorescence quenching metal complexes oxygen described relation oxygen sensitivity probes recent advances optical oxygen probes detection techniques intracellular tissue oxygen measurements reviewed emphasizing usefulness chemical modifications improving probe properties tissue oxygen imaging hypoxic tumor imaging using metal complex probes demonstrate vast potential optical oxygen sensing methods using luminescent probes elsevier rights reserved
oxygen plays key role stem cell biology signaling molecule indicator cell energy metabolism quantification cellular oxygen kinetics determination specific oxygen uptake rates sours routinely used understand metabolic shifts however current methods determine sour adherent cell cultures rely cell sampling impacts cellular phenotype present real time monitoring cell growth phase contrast microscopy images respiration using optical sensors dissolved oxygen time course data bulk peri cellular oxygen concentrations obtained chinese hamster ovary cho mouse embryonic stem cell mescs cultures successfully demonstrated non invasive label free approach additionally confirmed non invasive detection cellular responses rapidly changing culture conditions exposing cells mitochondrial inhibiting uncoupling agents cho mescs sour values amol cell amol cell obtained respectively values compare favorably literature data capability monitor oxygen tensions cell growth sour adherent stem cell cultures non invasively real time significant benefit future studies stem cell biology stem cell based therapies
patients autoimmune polyendocrinopathy candidiasis ectodermal dystrophy apeced aps suffer chronic candidosis caused mainly candida albicans repeated courses azole antifungals led development resistance apeced patient population finland aim study address whether patients persistently colonized genetically closely related strains whether epidemic strains present molecular mechanisms account azole resistance sets albicans isolates nine apeced patients reported decreased susceptibility fluconazole isolated years apart included strains typed multilocus sequence typing cdr mdr erg mrna expression analysed northern blotting cdr cdr mdr protein expression western blotting tac erg genes sequenced seven patients multiple albicans isolates analysed persistently colonized genetically closely related strain mean years patients colonized different strains epidemic strains found major molecular mechanisms behind azole resistance mutations tac contributing overexpression cdr cdr six new tac mutations found one likely gain function mutation isolates found gained multiple tac erg point mutations despite clinically successful treatment leading relief symptoms colonization albicans strains persistent within apeced patients microevolution point mutations occur within strains leading development azole resistant isolates
pharmaceuticals personal care products ppcps along illicit drugs ids newly recognized classes environmental pollutants receiving considerable attention environmental impacts frequent occurrence persistence risk aquatic life humans however relatively little information often available regard possible biotic abiotic transformation products tps lack knowledge resulted substantial amount ongoing effort develop methods approaches would assess occurrence degradability potential elimination mechanisms efficiencies sewage treatment plants well environmental human health risks article extensive literature survey performed order present current stage knowledge progress made occurrence tps ppcps ids raw treated wastewaters apart tps resulting structural transformations parent compound aquatic environment technological treatment facilities sewage drinking water treatment plants free metabolites drug conjugates formed human metabolism also included review also released aquatic environment wastewaters concentration levels reported influents effluents wwtps hospital effluents removals treatment plants discussed finally information toxicity tps compiled available elsevier rights reserved
phenylketonuria pku inborn error amino acid metabolism autosomal recessive inheritance caused cases mutations phenylalanine hydroxylase pah gene pku wide allelic heterogeneity report novel heterozygous substitution argleu pah gene iranian pku family patient old female diagnosis moderate pku referred department medical genetics tehran university medical sciences tehran iran genetic counseling analysis april used pcr sequencing identify sequence variations pah gene
pheochromocytoma paraganglioma ppgl rare diseases also amongst characterized tumour types hence patients ppgl greatly benefited precision medicine two decades according current molecular biology genetics based taxonomy ppgl divided three different clusters characterized krebs cycle reprogramming oncometabolite accumulation depletion group activation pseudo hypoxia signalling pathway increased tumour cell proliferation invasiveness migration group aberrant kinase signalling causing pro mitogenic anti apoptotic state group categorization clusters highly dependent mutation subtypes least different syndromes distinct genetic causes phenotypes outcomes described genetic screening tests documented benefit different ppgl syndromes require specific approaches optimal diagnosis localization various syndrome related tumours genotype tailored treatment options follow preventive care investigated future new developments precision medicine ppgl mainly focus identification driver mechanisms behind disease initiation malignant progression identification novel druggable targets prospective validation treatment options eagerly awaited achieve goals predict collaborative large scale studies needed pheochromocytoma may provide example developing precision medicine orphan diseases could ultimately aid similar efforts rare conditions
phosphatidylinositol ptdins synthase key enzyme phospholipid pathway catalyses formation ptdins ptdins structural component cell membranes also precursor phospholipid signal molecules regulate plant response environment stresses obtained transgenic maize constitutively overexpressing underexpressing pis maize zmpis control maize ubiquitin promoter transgenic plants confirmed pcr southern blotting analysis real time pcr assay electrospray ionization tandem mass spectrometry esi based lipid profiling analysis showed drought stress conditions overexpression zmpis maize resulted significantly elevated levels phospholipids galactolipids leaves compared wild type time expression genes involved phospholipid metabolism pathway abscisic acid aba biosynthesis pathway including zmplc zmpld zmdgk zmdgk zmpipk zmaba zmnced zmaao zmaao zmsca markedly regulated overexpression lines drought stress consistent results drought stress tolerance zmpis sense transgenic plants enhanced significantly pre flowering stages compared maize plants results imply zmpis regulates plant response drought stress altering membrane lipid composition increasing aba synthesis maize
phosphatidylinositol kinase pik mitogen activated protein kinase extracellular signal regulated mek signaling central survival proliferation many cell types multiple lines investigation murine models shown control pik pathway particularly important regulatory cell treg stability function pik mek inhibitors introduced clinic hypothesized pharmacologic inhibition pik possibly mek mixed cultures human mononuclear cells would preferentially affect lymphocytes compared tregs tested hypothesis using four readouts proliferation activation functional suppression signaling results showed tregs less susceptible inhibition isoform specific pik inhibitors mek inhibitor compared conventional counterparts studies suggest less functional reliance pik mek signaling tregs compared conventional lymphocytes therefore pik mek pathways attractive pharmacologic targets transplantation treatment autoimmunity vitro agents block kinase mek pathways preferentially block nonregulatory cells relatively sparing regulatory cells suggesting pathways may attractive targets transplantation
phosphorylation ubiquitination pervasive post translational modifications impact processes inside eukaryotic cells role modification studied decades functional interplay two long demonstrated even widely postulated however understanding molecular features allow phosphorylation control protein ubiquitination ubiquitin control phosphorylation recently begun build review examples regulation ubiquitination phosphorylation aiming describe mechanisms molecular level general examples illustrate phosphorylation versatile switch throughout ubiquitination pathways ubiquitination primarily impacting kinase signalling emphatic manner scaffolding degradation examples regulation two processes likely grow even advances molecular biology proteomics computation allow system level understanding signalling many new cases could involve similar principles described extensive regulation two systems leaves doubt still many surprises store elsevier ltd rights reserved
phosphorylation protein kinases profound effects activity interaction proteins tyrosine phosphorylation reported involved various physiological processes plants however typical receptor tyrosine kinase isolated plants thus far dual specificity kinases potentially responsible phosphorylation tyrosine serine threonine target proteins cdna clone encoding putative dual specificity protein kinase isolated screening cdna gal activation domain fusion library soybean glycine max entire length obtained using rapid amplification cdna ends predicted polypeptide amino acid residues designated gmsty contains conserved subdomains share common characteristics serine threonine tyrosine protein kinases reported thus far addition three potential linked glycosylation sites nxs well phosphorylation motifs sxxxs observed suggesting gmsty may post translationally modified furthermore potential myristoylation motif mgarcsk found suggesting gmsty protein could associate membranes vivo southern blotting analysis revealed single copy gmsty genome northern blotting analysis showed gene upregulated drought salt treatment time dependent manner however exogenous abscisic acid aba could significantly affect mrna accumulation gmsty interestingly transcript gene remarkably downregulated cold treatment early stages response upregulated later results indicate protein kinase possibly regulated abiotic stresses aba independent pathway
phototropin blue light receptor plants shows dependent kinase activation excited light oxygen voltage sensing domain lov primarily responsible activation kinase domain however molecular mechanism conformational changes lov transmitted kinase domain remains unclear investigated induced structural changes minimum functional fragment arabidopsis phototropin composed lov kinase domain linker connecting two domains using small angle ray scattering saxs fragment existed dimer displayed photoreversible saxs changes reflected radii gyration angstrom dark angstrom irradiation dark molecular shape reconstructed saxs profiles appeared two bean shaped lobes twisted arrangement angstrom long angstrom wide angstrom thick molecular shape became slightly elongated dark fitting crystal structure lov dimer homology model kinase domain inferred shapes dependent change could interpreted positional shift kinase domain relative lov dimer addition found lysine functionally important residue terminal region lov plays critical role transmitting structural changes lov kinase domain interface domains critical signaling suitably changing structure activate kinase response conformational changes adjoining lov
phytohemagglutinin pha induced skin swelling response widely used rough surrogate integrative cell mediated innate immunity across multiple vertebrate taxa due simplification feasibility however little known whether sex interspecific differences immune responsiveness pha ectotherms especially anurans therefore studied sex species differences pha response three anurans asiatic toads bufo gargarizans dark spotted frogs pelophylax nigromaculatus mongolian toads pseudepidalea raddei captured northern regions anhui province china footpad thickness measured prior pha injection normalized saline injection opposite footpad body mass recorded beginning end assay results showed effects pha assay sex taxa body mass relative maximum swelling response pha max ranged occurrence time apparent postinjection asiatic toads dark spotted frogs mongolian toads respectively finally magnitude timing phamax dark spotted frogs significantly thinner faster mongolian toads asiatic toads value different two species magnitude pha max significantly positively correlated timing ofphamax considering individuals altogether analyzed within species results indicate male female anuran species respond similarly pha antigen stimulation magnitude timing phamax species specific briefly provide new evidence suitability pha assay non model anuran species different body sizes exhort need investigate nature pha assay hematological histological levels order extend application ecoimmunological studies amphibians
piwi interacting rnas pirna fully modified methylation termini terminal methylation required prevent nucleotide addition serves tag destabilization chapter describe biochemical mass spectrometric analyses methylation termini pirnas
plants synthesize large number isoprenoids nutritional medicinal industrial importance deoxy xylulose phosphate reductoisomerase dxr catalyzes first committed step plastidial isoprenoid biosynthesis identified two dxr isogenes designated ntdxr ntdxr tetraploid common tobacco nicotiana tabacum southern blotting genotyping analysis revealed two ntdxr genes existed tetraploid tobacco genome ntdxr ntdxr separately derived tomentosiformis sylvestris ntdxrs localized chloroplasts expression patterns indicated ntdxr ntdxr similar expression profiles ntdxr genes highly expressed leaves without trichomes expression relatively reduced inot sign owers stems weak leaf trichomes marginal roots seeds overexpressing ntdxr control promoter resulted longer primary roots enhancement various photosynthetic pigments hormones leaves contrast significant changes cembrane related diterpenoids synthesized glandular trichomes elucidate function dxr biosynthesis diterpenoids overexpression vectors ntdxr control trichome specific cyp promoter transferred tobacco plants cyp ntdxr tobacco exhibited larger glandular cells increased cembrane related diterpenoids leaf glandular trichomes moreover transcripts eight mep methyl erythritol phosphate pathway genes significantly regulated ntdxr overexpressing tobacco plants indicating overexpression ntdxr could boost expression downstream genes mep pathway results suggested overexpression ntdxr could increase levels photosynthetic pigments leaf surface exudates hormones though mep pathway
plants utilized agricultural productions interact insects fungi bacteria field conditions affecting thereby productivity since chitin derivatives play important roles interactions organisms chitin related enzymes effective tools drug targets controlling interactions thus molecular biology protein chemistry enzymology chitin related enzymes intensively studied many investigators identifications classifications genes encoding chitin synthetases chitinases chitosanases chitin deacetylases organisms conducted physiological functions defined knockdown knockout overexpression corresponding genes recombinant enzyme productions mutation studies also conducted understand structure function studies opened way efficiently utilize enzyme tools enhancing agricultural productions
polyalanine poly diseases caused expansion translated gcn triplet nucleotide sequences encoding poly tracts proteins date nine human disorders found associated poly tract expansions including congenital central hypoventilation syndrome oculopharyngeal muscular dystrophy previous studies demonstrated unexpanded wild type poly containing proteins localize cell nucleus whereas expanded poly containing proteins primarily localize cytoplasm poly disease proteins transcription factors mislocalization causes cellular transcriptional dysregulation leading cellular dysfunction correcting faulty localization could potentially point strategies treat aforementioned disorders pressing need identify mechanisms underlying mislocalization expanded poly protein performed glutathione transferase pulldown assay followed mass spectrometry identified eukaryotic translation elongation factor eefa interacting partner expanded poly containing proteins strikingly knockdown eefa expression partially corrected mislocalization expanded poly proteins cytoplasm restored functions nucleus demonstrated expanded poly domain serve nuclear export signal taken together study demonstrates eefa regulates subcellular location expanded poly proteins therefore potential therapeutic target combating pathogenesis poly diseases
polyketides structurally functionally diverse secondary metabolites biosynthesized polyketide synthases pkss using acyl coa precursors recent studies engineering structural characterization pkss facilitated use target enzymes biocatalysts produce novel functionally optimized polyketides compounds may serve potential drug leads review summarizes insights gained research type iii pkss discovery chalcone synthase plants novel pkss bacteria fungi date least families type iii pkss characterized highlighting utility pkss development natural product libraries therapeutic development
populus euphratica oliv poplar species distributed mainly deserts making interesting model investigate molecular mechanisms underlying different stress responses used molecular population genetic methods detect potential selection candidate genes belonging euphratica glutathione gsh peroxidase gpx family associated enzymatic mechanism combats oxidative damage caused reactive oxygen species ros plant cells earlier studies shown gpx proteins play important roles coping increased ros levels biotic abiotic stresses plants analyzed nucleotide diversity divergence patterns five loci encoding gpx genes reference loci used controls order detect departures neutral expectation gpx excess mid frequency alleles high intraspecific nucleotide diversity distributed upper tail simulated neutral model extensive showing strong evidence balancing selection local adaptation gpx gene exhibits low nucleotide diversity divergence suggesting evolved strong purifying selection failed detect evidence natural selection loci gpx gpx gpx compared reference loci results show nucleotide diversity divergence differ greatly members gpx gene family resulting differential selective pressure acting genes adaptive evolution influenced distribution euphratica desert regions
porcine epidemic diarrhea virus pedv causative agent porcine epidemic diarrhea china countries responsible serious economic losses pork industry inactivated pedv vaccine plays key role controlling prevalence pedv however consistently low viral titers obtained propagation pedv vitro represents challenge molecular analyses virus vaccine development study successfully isolated pedv isolate strain clinical samples collected recent outbreak diarrhea piglets china using porcine intestinal epithelial cells iec found isolate better adapted growth iecs vero cells titer iec cultures tcid passage mutations protein increased viral passage mutations tended towards attenuation viral challenge showed survival iec adapted cultures higher passage passage use iecs isolate propagate pedv provides effective approach laboratory based diagnosis pedv well studies epidemiological characteristics molecular biology virus
positioning nucleosomes regulates access dna binding factors consensus sequences nucleosome positions determined least part effects dna sequence nucleosome assembly nucleosomes also repositioned moved cis atp dependent nucleosome remodeling complexes studies repositioning used short dna fragments containing single nucleosome difficult use type template analyze role dna sequence repositioning however many remodeling complexes strongly influenced nearby dna ends mononucleosomal templates also provide information repositioning occurs context chromatin presence flanking nucleosomes could limit repositioning options protocol describes newly developed method allows mapping nucleosome positions without remodeling chosen region plasmid polynucleosomal template vitro approach uses mnase digestion release nucleosome protected dna fragments followed restriction enzyme digestion locally unique sites southern blotting provide comprehensive map nucleosome positions within probe region developed part studies showed human remodeling enzymes tended move nucleosomes away high affinity nucleosome positioning sequences also differences repositioning specificity different remodeling complexes
posner schlossman syndrome glaucomatocyclitic crisis unilateral ocular condition characterized recurrent attacks nongranulomatous anterior uveitis raised intraocular pressure result chronic secondary glaucoma relatively rare disease likely result recurrent cytomegalovirus infection affects predominantly middle aged males diagnosis largely clinical aqueous blood sampling aiding identification underlying infectious cause successful disease management often achieved topical treatment although systemic therapy even surgical intervention may required discuss current understanding posner schlossman syndrome pathophysiology recommended treatment options elsevier inc rights reserved
posttranscriptional gene silencing also known rna interference involves degradation homologous mrna sequences organisms plants posttranscriptional gene silencing part defense mechanism virus infection double stranded rna pivotal factor induces gene silencing paper got seven hairpin rnas hprnas constructs different hot spot sequences tobacco mosaic virus tmv potato virus pvy genome expression escherichia coli extracted seven hprnas test tobacco tmv pvy infection data suggest different hprnas different hot spot sequences tmv pvy genome different ability protect tobacco plants viral infection resistance tmv conferred hprna tmv movement protein stronger tmv hprnas resistance pvy conferred hprna pvy nuclear inclusion better induced pvy hprnas northern blotting sirna showed resistance indeed rna mediated virus resistance
previous studies showed cultured mouse trophoblast stem cells mtscs rapid proliferation normal maintenance sternness potency least spontaneous differentiation lowest level stress activated protein kinase sapk incubated rather traditional hypoxic conditions switching induced fast sapk responses tested dose response amp activated protein kinase ampk active form pampk thrp levels also tested whether pampk levels show similar rapid changes mtsc cultures switched optimal conditions delayed increase pampk levels similar switching conditions altering conditions either led rapid increase pampk levels within similar previously reported sapk response mtsc cells removed twelve hours exposure led cell program changes terms potency loss suppressed biosynthesis indicated levels phosphorylated inactive acetyl coa carboxylase pacc phosphorylation acc inhibited ampk inhibitor compound however unlike stressors ampk mediate hypoxia induced potency loss mtscs results suggest important aspect stem cell biology demands rapid stress enzyme activation cope sudden changes external environment least stressful stressful conditions
primary antibody deficiencies pads common form primary immunodeficiency predispose severe recurrent pulmonary infections result chronic lung disease including bronchiectasis chronic lung disease among common complications pad significant source morbidity mortality patients however development lung disease pad may solely result recurrent bacterial infection consequence bronchiectasis recent characterization monogenic immune dysregulation disorders extensive study common variable immunodeficiency demonstrated interstitial lung disease ild pad result generalized immune dysregulation frequently occurs absence pneumonia history bronchiectasis distinction bronchiectasis ild important consequences evaluation management lung disease pad example treatment ild pad typically uses immunomodulatory approaches addition immunoglobulin replacement antibiotic prophylaxis stalwarts bronchiectasis management patients although antibody deficient patients risk developing bronchiectasis ild occurs forms pad much commonly others suggesting distinct poorly understood immunological factors underlie development complication importantly ild earlier onset may worsen survival bronchiectasis efforts understand pathogenesis lung disease pad provide vital information effective methods diagnosis surveillance treatment patients american academy allergy asthma immunology
proliferation endometrial cells prerequisite step functional differentiation uterus tumor suppressor gene cyclin dependent kinase associated protein cdkap mrna detected pregnant uterus suggested involved cell proliferation however roles mechanisms regulating expression largely unknown study role steroid hormones expression cdkap examined using pcr northern blotting situ hybridization methods cdkap mrna highly expressed proestrus phase mainly localized epithelium subepithelium expression induced single injection estradiol progesterone effect progesterone stronger estradiol injections progesterone consecutive days induced cdkap expression endometrium patterns served proestrus phase injections estradiol consecutive days induce expression cdkap mrna level decreased combined treatment progesterone estradiol suppressed completely cdkap mrna expression ici uteri day gestation expression cdkap also regulated progesterone expected cdkap mrna expression totally suppressed ici thus suggested cdkap expression primarily regulated progesterone progesterone receptor uterus mainly localized proliferating tissues endocrinol invest editrice kurtis
proline essential component proteins also important roles adaptation osmotic dehydration stresses redox control apoptosis review pathways proline biosynthesis three domains life pathway reconstruction genome data hundreds eubacterial dozens archaeal eukaryotic organisms revealed evolutionary conservation variations pathway across different taxa prevalent pathway proline synthesis glutamate phosphorylated glutamyl phosphate glutamyl kinase reduced glutamyl semialdehyde glutamyl phosphate reductase cyclized spontaneously pyrroline carboxylate reduced proline pyrroline carboxylate reductase higher plants animals first two steps catalysed functional pyrroline carboxylate synthase alternative pathways proline formation use initial steps arginine biosynthetic pathway ornithine converted pyrroline carboxylate ornithine aminotransferase reduced proline converted directly proline ornithine cyclodeaminase organisms latter pathways contribute could fully responsible synthesis proline conservation proline biosynthetic enzymes significance specific residues catalytic activity allosteric regulation analysed basis protein structural data multiple sequence alignments mutant studies providing novel insights proline biosynthesis organisms also discuss transcriptional control proline biosynthetic genes bacteria plants
properly condensed chromosomes necessary accurate segregation sisters dna replication escherichia coli condesin mukb structural maintenance chromosomes smc like protein forms complex muke kleisin mukf mukb known able mediate knotting dna ring intramolecular reaction investigations mukb condenses dna discovered also mediate catenation two dna rings intermolecular reaction activity mukb requires dna binding head domains protein require either atp partner proteins muke mukf ability mukb mediate dna catenation underscores potential bringing distal regions chromosome together
propofol one popular intravenous agents used induction maintenance anesthesia numerous studies intended explore whether propofol affects tumor metastasis invasion results conflicting propofol influence cancer progression indirectly affecting function immune cells cells cells macrophages directly interfering cancer cell biology anti inflammation property propofol may beneficial certain cancer surgeries review discuss current understanding postulated mechanisms underlying effect propofol tumors present research progress field
proteases involved wide variety biologically medically important events entangled complex network processes regulate activity makes study intriguing challenging comprehensive understanding protease biology effective drug discovery therefore essential study proteases models close complex native environments live cells whole organisms protease activity detected reporter substrates activity based probes reagents suitable intracellular vivo use review focuses detection proteases cells vivo summarize use probes substrates molecular tools discuss strategies deliver tools inside cells describe sophisticated read techniques mass spectrometry various imaging applications article part special issue entitled physiological enzymology protein functions elsevier rights reserved
protein palmitoylation widespread lipid modification one cysteine thiols substrate protein modified form thioester palmitoyl group lipid modification readily reversible feature protein palmitoylation allows rapid regulation function many cellular proteins mutations palmitoyltransferases pats enzymes catalyze formation modification associated number neurological diseases cancer progression review summarizes crucial role palmitoylation biological systems discovery dhhc protein family catalyzes protein palmitoylation development methods investigating catalytic mechanism pats
protein prenylation involves addition farnesyl geranylgeranyl isoprenoid moiety onto terminus approximately mammalian proteins hydrophobic modification serves direct membrane association protein due finding oncogenic protein ras naturally prenylated several researchers developed inhibitors prenyltransferase enzymes cancer therapeutics despite numerous studies enzymology prenylation vitro many questions remain process prenylation living cells using combination flow cytometry confocal microscopy shown synthetic fluorescently labeled prenylated peptides enter variety different cell types additionally using capillary electrophoresis shown peptides detected minute quantities lysates cells treated peptides method allow study enzymology protein prenylation living cells
proteomic studies facilitated identification proteins associated detergent resistant membrane drm fraction variety cell types undertaken label free quantitative lfq proteomic profiling proteins associated detergent resistant plasma internal membranes resting activated platelets one hundred forty one proteins identified raw data available via proteomexchange identifier pxd proteins identified include myriad important platelet signaling trafficking proteins including rapb src snap syntaxin members previously unattributed ragulator complex mean lfq intensities calculated across three technical replicates three biological donors revealed several important platelet signaling proteins altered detergent solubility upon activation including gpib alpha gpib beta src zeta altered detergent solubility gpib zeta following activation using variety platelet agonists confirmed immunoblotting coimmunoprecipitation experiments revealed gpib alpha forms complex zeta shifts drms following activation taken together proteomic profiling platelet drms allowed greater insight complex biology drms platelets useful subproteome study platelet related disease data deposited proteomexchange identifier pxd http proteomecentral proteomexchange org dataset pxd
pulsed field gel electrophoresis pfge technique resolves chromosome sized dna molecules agarose gel well dna mapping karyotyping applications pfge techniques well adapted follow dna rearrangements time quantitative manner large sizes dna molecules analyzed dna preparation electrophoresis southern blotting processes present unique challenges pfge experiments chapter describe robust pfge protocol covering preparation intact saccharomyces cerevisiae chromosomal dna specific running conditions resolution small medium large sized chromosomes products basic southern blotting hybridization instructions analysis molecules
purification rna fragments complex mixture common technique requires consideration time cost purity yield purified rna fragments study describes fastest method purifying small rna lowest cost possible without compromizing yield purity technique describes purification small rna polyacrylamide gel resulting good yield small rna minimum experimental steps avoiding degradation rna obviating use ethidium bromide phenol chloroform extraction well siliconized glass wools remove polyacrylamide gel particles purified small rna suitable wide variety applications ligation end labelling radio isotope pcr reverse transcriptase pcr northern blotting experimental rnomics study also systematic evolution ligands exponential enrichment selex
purine derivatives play key role human metabolism adenine part dna constantly attacked many species form many different products oxidized forms metyl group commonly observed case dna damage adenine methylated different purine ring positions far electrochemical studies describing oxidation processes methylated adenines found possibility measuring methyladenine made pege using electrode surface prereatment due unique surface morphology followed adsorption obtain signals glassy acrbon electrode experimental conditions
purpose kyrieleis retinal periarteritis reflects severe intraocular inflammation experienced eye aetiology well established since nine cases reported pathological study available literature determine pathogenesis kyrieleis periarteritis based interpretation multimodal imaging findings methods charts patients kyrieleis arteritis seen retrieved eight uveitis referral centres throughout world follow ranged months results twenty five eyes kyrieleis arteritis patients included study nineteen patients male six female twenty three patients diagnosed toxoplasmosis retinochoroiditis two patients cytomegalovirus retinitis fluorescein angiography fundus autofluorescence indocyanine green angiography performed eyes eight eyes baseline spectral domain optical coherence tomography oct scans performed along segmental kyrieleis arteritis fluorescein angiography showed early hypofluorescence intermediate hyperfluorescence associated areas focal arteritis whereas indocyanine green angiography accumulations showed early hypofluorescence late hyperfluorescence fundus autofluorescence revealed increased autofluorescence vessels corresponding kyrieleis plaques oct scans along segmental kyrieleis arteritis showed hyperreflectivity vessel wall conclusions imaging modalities provide vivo quasi histologic images demonstrating kyrieleis plaques characterised inflammatory involvement within vessels endothelium
purpose review purpose review highlight recent methodological advances helped understand role intramuscular triglycerides human health well prevention treatment disease addition invasive muscle biopsy noninvasive methods techniques assess lipids within muscle reviewed recent findings addition intramuscular triglycerides lipids contained within skeletal muscle diacylglycerol ceramides may important role human metabolic disease vivo vivo methods obtain serial measurements muscle lipids result experimental perturbation recently provided unique insight respective roles human metabolism summary triglyceride accumulation within skeletal muscle received considerable interest due potential role insulin resistance fatty acid metabolism obesity aging type diabetes observations triglycerides may used fuel source exercising muscle thus may detrimental circumstances part prompted development implementation analytical methods quantify fatty acid composition muscle triglycerides well lipid species within muscle diacylglycerol ceramides addition noninvasive computed tomography magnetic resonance spectroscopy magnetic resonance imaging methods applied examine serial effects intervention muscle triglycerides
purpose review review intends describe recent studies development pancreatic cancer genetic molecular microenvironment perspective recent findings pancreatic cancer discovered distinct molecular subtypes based transcriptome analyses may implications treatment recent studies also mapping complex molecular biology cancer relates core signaling abnormalities inherent disease discoveries novel modes regulation pancreatic cancer development including alterations key transcription factors epigenetic modifiers metabolic pathways studies tumor associated microenvironment continue reveal complex role tumor development summary pancreatic cancer development appears depend multifaceted network signals dynamic involve multiple cell types linked spatiotemporal factors tumor evolution understanding development pancreatic cancer context key identifying novel effective targets treatment
purpose review focus two novel aspects head neck squamous cell carcinoma hnscc genetics special interest epithelial mesenchymal transition emt process initial step tumor progression finally leads metastasis formation explaining genes well epigenetic factors control process new diagnostic options based analysis circulating tumor cells ctcs cellfree dna cfdna could revolutionize diagnosis coming years recent findings present intriguing recently described group factors namely mirnas deregulated emt mirnas could serve novel markers emt metastasis formation also potential therapeutic target second show recent findings ctc cfdna analysis hnscc demonstrate usefulness new diagnostic approach summary stress importance emt context metastasis formation potential liquid biopsies clinical practice
purpose reviewdespite large investment resources screening fact colorectal cancer remains second leading cause cancer deaths among americans underscores need alternative strategies thus major clinical research imperative personalize clinical care focusing risk stratification screening surveillance chemoprevention therapeutic intervention recent findingsa complicating factor colorectal cancer biologically heterogeneous least four consensus molecular subtypes presents clear challenges developing robust molecular biomarkers summarythe purpose review discuss genetics molecular biology colonic neoplasia high low penetrance racial disparities colonic neoplasia finally put forth emerging concept greater genomic landscape idea chromatin protection therapy novel adjuvant chemotherapy
purpose study conducted investigate role four polymorphic variants dna methyltransferase genes risk factors radiation induced fibrosis breast cancer patients also assessed ability improve prediction accuracy combined mitochondrial haplogroup previously found independently associated lower hazard radiation induced fibrosis materials methods dnmt dnmta dnmta dnmtb genotyped real time polymerase chain reaction italian breast cancer patients received radiotherapy breast conserving surgery subcutaneous fibrosis scored according late effects normal tissue subjective objective management analytical lent soma scale discriminative accuracy genetic models assessed area receiver operating characteristic curves auc results kaplan meier curves showed significant differences among dnmt genotypes cumulative incidence grade subcutaneous fibrosis log rank test value multivariate cox regression analysis revealed dnmt independent protective factor moderate severe radiation induced fibrosis hazard ratio confidence interval adding dnmt rsto haplogroup increased discrimination accuracy auc model conclusion dnmt may represent determinant radiation induced fibrosis breast cancer patients promise clinical usefulness genetic based predictive models
purpose evaluate prevalence large drusen uveitis clinic population design retrospective cohort study methods patients primary non infectious uveitis years older seen national eye institute national institutes health august reviewed using electronic medical records photographic databases patients classified age related macular degeneration amd either eye large drusen geographic atrophy neovascular amd according definitions used eye diseases prevalence research group edprg expected number cases standardised mortality ratio smr large drusen estimated based edprg estimates results identified patients aged years primary non infectious uveitis gradable fundus photos average age years range non hispanic white non hispanic black hispanic white race ethnicity large drusen identified four patients patients identified late amd uveitis cohort smr cases large drusen adjusted age calculated whole cohort non hispanic whites non hispanic blacks conclusions large drusen prevalence among patients uveitis years age appears less prevalence general population accounting differences age distribution especially non hispanic whites although racial gender distribution study population directly representative general population results study suggest possible sparing patients uveitis amd larger systematic study greater power would needed confirm findings
purpose purpose study evaluate association intronic expansion trinucleotide repeat tnr tcf gene fuchs endothelial corneal dystrophy fecd japanese population methods forty seven japanese fecd patients age matched controls recruited fecd patients controls examined slit lamp noncontact specular microscopy repeat length determined direct sequencing short tandem repeat assay pcr amplified dna southern blotting unamplified dna results tnr expansion defined ctg repeats tcf gene identified fecd cases controls sensitivity specificity study respectively clinical characteristics fecd patients tnr expansion distinct without tnr expansion conclusions findings show first time japanese population association tnr expansion tcf fecd contrast caucasian cohorts tnr expansion present patients fecd ctg expansion present minority japanese subjects indicating genetic variants common causes phenotypically identical disease population
purpose fragile syndrome common cause intellectual disability usually caused cgg trinucleotide expansion fmr gene cgg repeat size correlates expansion risk premutation alleles repeats may expand full mutations female meiosis interspersed agg repeats decrease allele instability expansion risk carrier rate stability fmr alleles evaluated large cohorts ashkenazi non ashkenazi women methods total ashkenazi non ashkenazi cases analyzed using southern blotting polymerase chain reaction addition agg interruptions evaluated ashkenazi non ashkenazi women recruited results groups major peaks repeats ashkenazi women higher frequency repeats lower frequency peaks higher rate premutations repeats range detected among ashkenazi women loss agg interruptions significantly less common among ashkenazi women non ashkenazi women conclusion ashkenazi women high fragile syndrome carrier rate mostly lower range premutations carry low risk expansion full mutation normal sized alleles ashkenazi women higher average number agg interruptions may increase stability factors may decrease risk fragile syndrome offspring among ashkenazi women
purpose contribution intestinal bacterial strains gut microbiota human metabolism obesity increasingly recognized goal article provide commentary clinical usefulness data methods performed review currently available articles pubmed findings data based germ free animal research translation human disease may difficult however changes intestinal bacterial composition subsequent altered diversity associated presence chronic low grade inflammation known feature insulin resistance type diabetes mellitus implications still proven whether intestinal bacteria play causal role glucose lipid metabolism intervention studies including fecal transplantation supplementation single bacterial strains humans might provide insight moreover prospective cohorts healthy subjects using fecal samples collected baseline help identify causally involved specific intestinal bacterial strains drive aberrant human metabolism ultimately would great asset potential diagnostic therapeutic targets could derived novel player human cardiometabolism elsevier journals inc rights reserved
purpose study aimed investigate effects chronic moderate exercise regulation intracellular calcium signaling important link proliferation capacity murine splenic lymphocytes methods male swiss mice randomly assigned either control group exercise training group mice performed voluntary exercise months lymphocytes isolated murine spleens intracellular calcium determined using fura fluorescence spectrometry combination flow cytometry carboxy fluorescein succinimidyl ester labeling technique used determination cell proliferation expression levels regulating genes determined quantitative polymerase chain reaction qpcr analysis results basal significantly higher mice compared mice similarly transients stimulation phytohemagglutinin concanavalin anti antibody induced significantly increased mice however differences found stimulation thapsigargin cells showed higher mitogen induced proliferation levels mrna expression cellular regulating genes stim cav trpv ipr orai mcu trpm trpc significantly downregulated conclusion study suggests chronic moderate exercise improves intracellular signaling murine splenic lymphocytes enhanced availability second messenger followed improved cellular function cell proliferation downregulation homeostasis related factor expression might considered self protective mechanism elevated intracellular signals
purpose evaluate morphological characteristics posterior corneal regions including keratic precipitates eyes cytomegalovirus cmv corneal endotheliitis using anterior segment spectral domain optical coherence tomography oct methods thirteen eyes patients polymerase chain reaction proven cmv corneal endotheliitis included study slit lamp images anterior segment oct images posterior cornea obtained analyze clinical characteristics corneal structures keratic precipitates morphological changes posterior cornea throughout course antiviral treatment also investigated results anterior oct images showed protruding structures posterior cornea protruding structures exhibited dendritic dome shaped quadrangular saw tooth appearance reflectivity structures high reflectivity posterior corneal images including endothelium deep stromal corneal regions also high corneal inflammation corneal edema improved protruding structures high intensity regions posterior corneal images resolved course antiviral treatment conclusions anterior segment oct examination represents useful noninvasive alternative diagnose monitor cmv corneal endotheliitis
purpose investigate utility ofwhole exome sequencing wes define molecular diagnosis patients clinically diagnosed congenital anomalies kidney urinary tract cakut methods wes performed families cakut wes data analyzed single nucleotide variants snvs known cakut genes putatively deleterious sequence changes new candidate genes potentially disease associated copy number variants cnvs results approximately families pathogenic snvs identified pax hnfib eya observed phenotypes families expand current understanding role genes cakut four pathogenic cnvs also identified using two cnv detection tools addition found one deleterious novo snv foxpi among families cakut clinical database baylor miraca genetics laboratory queried seven additional unrelated individuals novel novo snvs foxpi identified six eight individuals foxpi snvs syndromic urinary tract defects implicating gene urinary tract development conclusion conclude wes used identify molecular etiology snvs cnvs subset individuals cakut wes also help identify novel cakut genes
pyruvate keystone molecule critical numerous aspects eukaryotic human metabolism pyruvate end product glycolysis derived additional sources cellular cytoplasm ultimately destined transport mitochondria master fuel input undergirding citric acid cycle carbon flux mitochondria pyruvate drives atp production oxidative phosphorylation multiple biosynthetic pathways intersecting citric acid cycle mitochondrial pyruvate metabolism regulated many enzymes including recently discovered mitochondria pyruvate carrier pyruvate dehydrogenase pyruvate carboxylase modulate overall pyruvate carbon flux mutations genes encoding proteins regulating pyruvate metabolism may lead disease numerous cases described aberrant pyruvate metabolism plays especially prominent role cancer heart failure neurodegeneration major diseases involve aberrant metabolism understanding exploiting pyruvate carbon flux may yield novel treatments enhance human health
rabies virus rabv remains one important global zoonotic pathogens rabv causes rabies acute encephalomyelitis associated high rate mortality humans animals affecting different parts world particularly asia africa confirmation rabies diagnosis relies laboratory diagnosis molecular techniques detection viral rna reverse transcription polymerase chain reaction pcr increasingly used study two real time quantitative pcr assays developed large spectrum detection rabv focus african isolates primer probe sets targeted highly conserved regions nucleoprotein polymerase genes results indicated absence non specific amplification cross reaction range viruses belonging taxonomic family rhabdoviridae well negative brain tissues various host species analytical sensitivity ranged standard rna copies detected per reaction gene gene assays respectively effective detection high sensitivity assays african isolates showed successfully applied general research used diagnostic process epizootic surveillance africa using double check strategy elsevier rights reserved
radiation treatment remains one major modalities treatment lung cancer although majority patients initially respond treatment radiation resistance inevitably develops leads treatment failure therefore identification underlying molecular mechanisms radiation resistance may facilitate development novel approaches overcoming resistance enhance efficacy treatment radiation lung types cancer present study established three radiation resistant sub cell lines derived radiation sensitive lung cancer cell line hcc using polymerase chain reaction microrna mirna array multiple mirnas identified markedly downregulated radiation resistant cells including mirna mir mir mir observed overexpression mir sensitized resistant cells treatment radiation thioredoxin reductase txnrd novel target mir furthermore demonstrated knockdown txnrd using small interfering rna increased basal level reactive oxygen species sensitized cells radiation treatment results present study demonstrated multiple mirnas downregulated radiation resistant lung cancer cells downregulation mir mediates radiation resistance targeting txnrd mrna expression present study revealed novel molecular mechanism mirna mediated radiation resistance identified mir regulated txnrd novel therapeutic target overcoming radiation resistance treatment lung cancer
radish raphanus sativus cultivated worldwide agronomic importance dsrnas associated partitiviruses previously found many sativus varieties study three large dsrnas radish cloned using modified single primer amplification technique three dsrnas lengths shared conserved untranslated terminal regions contained major open reading frame putatively encoding chrysoviral replicase capsid protein protease respectively isometric virus like particles vip approximately diameter isolated infected radish plants northern blotting indicated dsrnas encapsidated vlp virus containing dsrna genome segments named raphanus sativus chrysovirus rascv phylogenetic analysis revealed rascv new species chrysoviridae family forms plant taxon another putative plant chrysovirus anthurium mosaic associated virus amacv furthermore fungal mycelia observed radish leaf tissues stained trypan blue results indicated rascv likely plant chrysovirus rather chrysovirus symbiotic fungi exhaustive blast analysis rascv amacv revealed chrysovirus like viruses might widely exist eudicot monocot plants endogenization chrysovirus segments plant genome might ever happened elsevier rights reserved
rapid advances genetics linking mutations genes diseases exponential rate yet characterizing gene mutation cell behavior relationships essential precision medicine remains daunting task mutations small gtpase braf associated various tumors similar mutations associated neurodevelopmental disorder cardio facio cutaneous syndrome cfc wedeveloped fast cost effective lentivirus based rapid gene replacement method interrogate physiopathology braf similar disease linked braf mutants including cfc linked mutants analysis simultaneous multiple patch clamp recordings pairs rat neurons validation additional mouse human neurons multiple learning tests rats identified braf key missing signaling effector common synaptic nmda camkii syngap ras braf mek erk transduction cascade moreover analysis creates original big data unveiling three general features braf signaling study establishes first efficient procedure permits large scale functional analysis human disease linked mutations essential precision medicine
rapid progressive advances molecular biology techniques advent next generation sequencing ngs opened new possibilities analyses also identification entomological matrixes insects arthropods widespread nature found crime scene provide useful contribution forensic investigations entomological evidence used experts define postmortem interval pmi essentially based morphological recognition insect estimation insect life cycle stage however molecular genotyping methods also provide important support forensic entomological investigations identification species human genetic material required case study concerns collection insects found house woman died unknown causes initially insects identified morphologically belonging pediculidae family human dna extracted analyzed gastrointestinal tract application latest generation forensic dna assays quantifiler trio dna quantification kit hid ion ampliseq identity panel applied biosystems individuated presence human dna samples determined genetic profile elsevier ireland ltd rights reserved
rationale aims objectivesthe purpose medical education produce competent capable professional practitioners combine art science medicine moreover process must prepare individuals practise field knowledge increasing contexts knowledge applied changing unpredictable ways basic sciences important training physician goal basic science training learn way material applied practice much effort expended integrate basic science clinical training adding many topics medical curriculum effort challenging aims paper propose unifying conceptual framework facilitates knowledge integration among levels living systems cell society illustrate organizing principles two examples framework action cybernetic systems feedback distributed robustness methodsliterature related hierarchical holarchical frameworks reviewed resultsan organizing framework derived living systems theory spanning range molecular biology health systems management developed application cybernetic systems three levels regulation pancreatic beta cell production insulin physician adjustment medication glycaemic control development action performance measures diabetes care illustrated similarly distributed robustness illustrated dna damage response system principles underlying patient safety conclusionseach illustrated organizing principles offers means facilitate weaving basic science clinical medicine throughout course study use approach may promote systems thinking core competency effective capable medical practice
rationale cigarette smoke extract inhibits chloride secretion human bronchial epithelial cells oxidants decrease gene expression protein expression function cystic fibrosis transmembrane conductance regulator cftr objectives cigarette smoke rich source oxidants verified hypothesis cftr may suppressed exposure cigarette smoke vitro vivo methods effects cigarette smoke exposure calu cell cftr expression function observed also studied nasal potential differences pds men smokers nonsmokers detectable cftr gene mutations determined investigations infertility cftr expression function determined northern blotting western blotting camp dependent efflux assays extensive cftr genotyping performed subject nasal measurements made baseline amiloride chloride free buffer isoproterenol perfusions main results cigarette smoke decreased cftr expression function calu cell lines furthermore nasal pds cigarette smokers showed pattern typical cftr deficiency blunted response chloride free buffer isoproterenol compared nonsmokers conclusions conclude cigarette smoke decreases expression cftr gene protein function vitro acquired cftr deficiency occurs nasal respiratory epithelium cigarette smokers suggest acquired cftr deficiency may contribute physiopathology cigarette induced diseases chronic bronchitis
recent advances genomic sequencing opened new horizons study population genetics evolution non model organisms however population genomic studies performed wild mammals understand landscape affects genetic structure populations useful information conservation biodiversity applied genomic approach evaluate relationship habitat features genetic patterns spatial temporal scales endangered ecosystem tropical dry forest tdf studied populations plateau deer mouse peromyscus melanophrys analyse genomic diversity structure tdf protected area huautla mountain range hmr mexico based snps obtained genotyping sequencing spatial scale found significant signature isolation distance significant differences genetic diversity indices among study sites significant differences habitats different levels human perturbation temporal scale genetic diversity levels fluctuated significantly time neither seasonality disturbance levels significant effect also outlier analysis revealed loci potentially selection results suggest population genetics melanophrys may little impacted anthropogenic disturbances natural spatial temporal habitat heterogeneity study area genome wide approach adopted provides data value conservation planning baseline used reference future studies effects habitat fragmentation seasonality hmr tdf
recent advances field immunometabolism support concept fundamental processes cell biology tcr mediated activation helper lineage differentiation closely linked changes cellular metabolic programs although major task intermediate metabolism provide cell constant supply energy molecular precursors production biomolecules dynamic regulation metabolic pathways also plays active role shaping cell responses key metabolic processes glycolysis fatty acid mitochondrial metabolism recognized crucial players cell activation differentiation modulation differentially affect development helper cell lineages review describe diverse metabolic processes cells engage life cycle nave towards effector memory cells consider particular cellular metabolism may actively support function cells different states moreover discuss molecular regulators mtor ampk link environmental changes adaptations cellular metabolism elucidate consequences cell differentiation function authors published elsevier ltd open access article license
recent comprehensive molecular subtyping gastric cancer identified epstein barr virus ebv positive tumors subtype distinct salient molecular clinical features study aimed determine potential utility circulating cell free ebv dna biomarker detection monitoring therapeutic response patients ebv associated gastric carcinoma ebvagc ebv genes ribonuclease rna component ratios ebv ratios tumors plasma samples determined quantitative real time polymerase chain reaction patients including patients ebvagc diagnosed conventional method circulating cell free ebv dna detected patients sensitivity specificity detection respectively plasma ebv ratios significantly correlated size ebvagc tumors plasma ebv dna detected surgery ebvagc cases disappeared surgery patients ebvagc may better prognosis circulating cell free ebv dna little impact prognosis addition repeated assessment plasma ebv ratio ebvagc showed decrease increase plasma ebv dna treatment tumor progression recurrence respectively results suggest potential utility circulating cell free dna reveal ebv dna identification ebvagc subtype real time monitoring tumor progression well treatment response patients ebvagc
recent evidence indicates mirna biogenesis factors drosha dgcr dicer exert non overlapping functions also roles mirna independent regulatory mechanisms however currently unknown whether mirna independent functions dgcr play role maintenance neuronal progenitors corticogenesis phenotypic comparison cortices conditional dgcr dicer knockout mice show dgcr deletion contrast dicer depletion leads premature differentiation neural progenitor cells overproduction tbr positive neurons remarkably depletion mirnas upon dcgr loss reduced compared dicer loss indicating phenotypic differences mediated mirna independent functions dgcr show dgcr mutations induce earlier stronger phenotype developing nervous system compared dicer mutants mirna independent functions dgcr critical corticogenesis finally data also suggest microprocessor complex drosha dgcr core components directly regulates tbr transcript containing evolutionarily conserved hairpins resemble mirna precursors independently mirnas
recent studies established resident memory cells dominant memory lymphocyte population surveying nonlymphoid tissues unlike memory cell lineages recirculate blood permanently confined tissue residence orchestrate local immune responses shown accelerate local pathogen control many experimental infection models briefly summarize recent advances differentiation maintenance protective function little known speculated potential implications transplantation biology areas emphasis include role passenger controlling latent viral recrudescence donor organs donor source graft versus host disease ability potently induce inflammation sensing alarm functions differentiation host cells response local cues inside allograft investigation context transplantation might identify therapeutic targets prolong graft survival review discusses phenotype function potential relevance transplantation resident memory cells
recent years seen growing interest pbc within scientific community healthcare providers industries coupled great advances understanding molecular genetic basis natural history disease several disease modifying agents targeting immune mediated response bile acid therapies different stages development promising results new drug obeticholic acid recently registered europe second line treatment refractory pbc international cohort studies highlighted disease heterogeneity need provide patients personalised management based risk disease progression major challenges remain development surrogate endpoints clinical trials acceptable regulatory authorities disease relatively low rate events development clinical tools patient risk stratification selection greatest potential benefit second line therapies
recently sonokembang pterocarpus indicus trees dying malang death rate trees reached addition death trees spread regencies east java euplatypus parallelus specific species ambrosia beetles causal agents dying wilting sonokembang trees malang wilting caused mainly pathogenic fungi carried ambrosia beetles confirm microbial communities related parallelus attack sonokembang parallelus attacked trees collected malang city isolation identification species conducted laboratory mycology faculty agriculture university brawijaya laboratory molecular biology islamic state university malang results showed nine microbes including five genera fungi two genera yeasts one genus bacterium identified microbial communities found namely aspergillus spp penicilium spp trichoderma spp fusarium spp acremonium spp gliocladium spp fungi streptomyces spp bacteria saccharomyces spp candida spp yeast
recently discovered beta thujaplicin induces metallothionein expression mouse ker atinocytes vivo vitro however molecular mechanisms exerts biological effects elucidated purpose study explore signal transduction pathway involved mrna induction using hacat keratinocyte cell line northern blotting performed analyzing human iia mrna expression levels combination number protein kinase hibitors including pkc specific inhibitor chelerythrin cat assays iia gene promorter cat construct conducted examining transcriptional regulation free radical scavenger acetylcysteine nac used analyzing role oxidative stress gene induction increased iia gene transcript levels cat activity dose dependent fashion hacat cells increase iia mrna levels cat activity completely suppressed addition chelerythrin prevented inducible iia promoter activation furthermore nac suppressed inducible iia promoter activation results demonstrate potent activator iia gene promoter pkc activation reactive oxygen species implicated inducible iia gene expression may useful tool dissecting signal transduction pathway mediating iia promoter activation
recurrent gene fusions involving ewsr members camp response element binding protein creb family atf creb reported diverse group tumors including angiomatoid fibrous histiocytoma afh soft tissue gastrointestinal clear cell sarcoma primary pulmonary myxoid sarcoma hyalinizing clear cell carcinoma salivary gland recently encountered group myxoid mesenchymal tumors positive ewsr fusions one creb family member atf creb crem histologic features distinct previously described pathologic entities tumors occurred children young adults mean equal sex distribution except intracranial intra axial meningeal whereas perirectal histologically tumors well circumscribed often lobulated composed uniform ovoid round cells arranged cord like reticular structures myxoid background except displayed unique sunburst amianthoid fibers immunohistochemically tumors positive epithelial membrane antigen focal diffuse desmin novel ewsr crem fusion identified rna sequencing perirectal tumor confirmed fluorescence situ hybridization fish reverse transcription polymerase chain reaction pcr second case similar ewsr crem fusion identified pcr fish meningeal tumor remaining cases studied fish showed presence ewsr creb fusion cases ewsr atf conclusion report distinct group myxoid mesenchymal neoplasms occurring children young adults predilection intracranial locations although immunoprofile epithelial membrane antigen ema desmin fusion type raise possibility myxoid afh none typical histologic findings afh present suggesting novel entity
reduced ascorbic acid asa converted oxidized state ascorbate oxidase present study gene regulated rna interference tomato via agrobacterium mediated transformation existence rna interference dna transformed plants progenies confirmed polymerase chain reaction amplification southern blotting expression levels transgenic lines monitored semi quantitative reverse transcriptase polymerase chain reaction decreased enzyme activity significantly improved asa content tomato fruit observed correlated gene suppression transgenic plants suppression asa improvement exhibited higher photosynthesis capacity untransformed control drought stress report demonstrates asa oxidation pathway rna interference provides feasible approach improve asa content horticultural plants regulating genes related asa metabolism
regeneration periodontal tissues particularly cementum key regaining periodontal attachment health human periodontal ligament stem cells hpdlscs shown good cell source regenerate periodontal tissues however subpopulations differentiation induction relation cementogenic lineages unclear thus aim examine expression cementum associated genes pdlsc subpopulations determine effect broadly used osteogenic stimulus vitamin expression cementogenic osteogenic genes pdlscs real time quantitative polymerase chain reaction qpcr analysis showed cementogenic marker cementum attachment protein cap expressed slightly higher stro stro stro subpopulations original cell pool cementum protein cemp expression subpopulations different original pool notably stimulation osteogenic differentiation medium cap cemp downregulated osteogenic markers bone sialoprotein bsp osteocalcin ocn upregulated cap cemp upregulated treatment transplantation treated pdlscs immunocompromised mice resulted forming significantly ectopic cementum bone like mineral tissues vivo immunohistochemical analysis ectopic growth showed cap cemp mainly expressed mineral tissue cells fibrous tissues conclude osteogenic stimulation inductive appears inhibitory cementogenic pathways whereas induces cementogenic lineage commitment pdlscs may useful stimulus cementogenesis periodontal regeneration
renin substrate biological renin activity renin secreting cells kidneys evolved early stage vertebrate phylogeny angiotensin ang molecules identified biochemically representative species vertebrate classes although variation occurs amino acids positions ang variations also evolved amino acid positions cartilaginous fish angiotensin receptors homologues identified molecularly characterized pharmacologically nonmammalian vertebrates also various forms angiotensins bypass traditional renin angiotensin system ras cascades large peptide substrates particularly tissues present nonetheless phylogenetically important functions ras maintain blood pressure blood volume homeostasis ion fluid balance via kidney central mechanisms stimulation cell growth vascularization possibly via paracrine action angiotensins molecular biology ras receptors intensive research foci review provides overview phylogenetic appearance structure biochemistry ras cascade properties angiotensin receptors comparative viewpoints functions regulation ras nonmammalian vertebrates discussions focus fundamental functions ras conserved throughout phylogenetic advancement well physiological implications significance examining biological history ras help analyze complex ras systems mammals furthermore suitable models answering specific questions often found primitive animals
reproductive interference known occur morphologically similar species neoseiulus womersleyi neoseiulus longispinosus crosses longispinosus females womersleyi males produce female offspring reciprocal crosses produce male offspring details interspecific reproduction process remain largely unknown article investigated intraspecific interspecific crosses spermathecal vesicles spermatophores females molecular identification hybrids based internal transcribed spacer region nuclear ribosomal rna rrna copulation times interspecific crosses similar intraspecific crosses yet interspecific crosses womersleyi females longispinosus males exhibited extremely low fecundity female offspring hand reciprocal crosses produced viable sterile female offspring intraspecific crosses womersleyi longispinosus showed female biased offspring sex ratios womersleyi females females tested mated longispinosus males inflated vesicle inseminated crosses longispinosus females womersleyi males pairs neither inflated spermathecal vesicles inseminated one pair vesicles inflated insemination occurred enabled production female offspring polymerase chain reaction products region rrna gene digested clai exhibited two fragments womersleyi single fragment longispinosus whereas three fragments hybrids confirming identification results confirmed asymmetric reproductive interference womersleyi longispinosus demonstrated female offspring produced sterile hybrids
research evolutionary psychology life history theory particular yielded important insights developmental processes underpin variation growth psychological functioning behavioral outcomes across individuals yet methodological concerns limit ability draw causal inferences human development psychological functioning within life history framework current study used simulation based modeling approach estimate degree genetic confounding tests well researched life history hypothesis father absence associated earlier age menarche results demonstrate genetic correlation confound phenotypic association two variables even genetic correlation small suggesting failure control genetic correlation could produce spurious phenotypic correlation discuss implications results research human life history highlight utility incorporating genetically sensitive tests future life history research elsevier inc rights reserved
responsible conduct learning research rclr progressively introduced pharmacology curriculum undergraduate science students university western australia second year undergraduate curriculum lecture introduces students issues use animals teaching responsible conduct research third year student groups deliver presentations topics including scientific integrity use human subjects research academic research staff attending presentations provide feedback participate discussions students enrolled optional capstone honours year complete online course responsible conduct research participate interactive movie rclr became established curriculum survey likert scaled open ended questions examined student staff perceptions data expressed approval responses represented strongly agree agree rclr found relevant study pharmacology approval important one future career approval stimulated interest area approval free entry comments demonstrated value rclr constructive suggestions improvement incorporated rclr modules found valuable addition pharmacology undergraduate curriculum approach may used incorporate ethics science undergraduate curriculum use discipline specific topics international union biochemistry molecular biology
restriction fragment length polymorphism rflp based considered gold standard mycobacterium tuberculosis molecular typing useful discriminate among tuberculosis strains investigate outbreaks distinguish reactivation infection studied polymorphisms among tuberculosis isolates northern india using rflp determine presence correlation based fingerprints drug resistance look relapse transmission among patients contacts rflp patterns pvuii digested genomic dna tuberculosis isolates analyzed using southern blotting probe drug sensitivity testing dst conducted rifampicin isoniazid ethambutol streptomycin using proportion method high degree polymorphism seen among tuberculosis isolates number copies varied predominance isolates bands seventy five isolates high number bands intermediate number isolates low number isolates bands correlation band numbers rflp banding patterns found drug resistance particular geographical area although clustering seen amongst mdr cases cases relapses transmissions seen
riboswitches cis acting mrna elements regulate gene expression response ligand binding recently class riboswitches proposed respond molybdenum cofactor moco serves redox center metabolic enzymes leader escherichia coli moaabcde transcript exemplifies candidate riboswitch class mrna encodes enzymes moco biosynthesis moaa expression feedback inhibited moco previous rna seq analyses showed moaa mrna copurified rna binding protein csra carbon storage regulator suggesting csra binds rna vivo among global regulatory roles csra represses stationary phase metabolism activates central carbon metabolism used gel mobility shift analysis determine csra binds specifically high affinity moaa mrna leader northern blotting studies series chromosomal lacz reporter fusions showed csra posttranscriptionally activates moaa expression without altering moaa mrna levels indicative translation control deletion analyses nucleotide replacement studies footprinting csra febabe identified two sites csra binding toeprinting assays suggested csra binding causes changes moaa rna structure propose moaa mrna leader forms aptamer serves target posttranscriptional regulation least two different factors moco protein csra aware similar dual posttranscriptional regulatory mechanisms additional examples likely emerge elsevier ltd rights reserved
rice stripe virus rsv often causes severe rice yield loss temperate regions east asia although correlation small interfering rnas sirnas transgenic virus resistance plants using rna interference rnai known decades systematical research done profiling sirnas genomic scale research aiming systematically study rnai impact rsv resistant transgenic rice generated introducing inverted repeat construct targets rsv nucleocapsid protein ncp gene paper three independent rsv resistant transgenic rice lines generated stable integration dna fragment expression sirnas confirmed southern blotting northern blotting analyses majority sirnas lengths nucleotides validated connection presence rsv ncp homologous sirnas rsv resistance transgenic rice lines one transgenic lines dna fragment found inserted chromosome rice genome substituting rice genome fragment bioinformatics analysis small rna seq data line also confirmed large population ncp derived sirnas transgenic plants rsv infected library possessed sirnas mock inoculated libraries results indicating inverted repeat construct rsv could introduce abundance sirnas transgenic rice moreover varied expression level specific sirnas found among different segments ncp gene template ncp derived sirnas reads aligned fragment length ncp gene length indicating potential usage hotspot regions rnai silencing future research conclusion first study address sirna profile rsv resistant transgenic plant using next generation sequencing ngs technique confirmed massive abundance sirna derived inverted repeat ncp major reason rsv resistance
rich ecotype collections used several plant models unravel molecular causes phenotypic differences investigate effects environmental adaption acclimation model moss physcomitrella patens collections accessions available used phylogenetic taxonomic studies example investigated phenotypic differences focus reute accession provide expression profiling comparative developmental data several stages sporophyte development well information genetic variation via genomic sequencing analysed cross technology cross laboratory data define confident set mature sporophyte specific genes find standard laboratory strain gransden produces fewer sporophytes reute villersexel although gametangia develop time course show evident morphological differences reute exhibits less genetic variation relative gransden villersexel yet found variation gransden reute expression profiles several genes well variation hot spots genes appear evolve positive darwinian selection analyzed expression differences ecotypes selected candidate genes gras transcription factor family chalcone synthase family genes involved cell wall modification potentially related phenotypic differences confirm reute patens ecotype suggest use reverse genetics studies involve progression life cycle multiple generations
rna sequencing patient bone marrow detected fusion transcripts coding sequence famb gene fused genomic sequence mapped upstream slca locus reverse transcription polymerase chain reaction together sanger sequencing verified presence fusion transcript famb fusion transcript expected produce chimeric protein however may code truncated famb protein consisting first amino acids famb together amino acids sequence functionally truncated famb would similar protein encoded famb sequence accession famb protein accession aah furthermore truncated protein contains entire conserved domain fam protein family chromosome aberration detected study previously reported single case also sole karyotypic change patients entered complete hematological cytogenetic remission following treatment
sks major effectors mtor mammalian target rapamycin pathway signaling increased protein synthesis cell growth response insulin amp atp levels amino acids deregulation pathway related disorders diseases associated metabolism obesity diabetes cancer family composed two main members comprise different isoforms resulted alternative splicing alternative start codon use although important molecular functions associated extensively studied isoform counterpart lacks information present study performed immunoprecipitation assays followed mass spectrometry analysis flag tagged interactomes expression hek cells protein lists submitted crapome contaminant repository affinity purification saint significance analysis interactome analysis allowed identification high scoring interactions comparative approach interacting proteins predominantly related cytoskeleton stress response whereas interactome associated transcription splicing ribosome biogenesis moreover found evidences new targets regulators protein family proteins ncl npm eif alpha xrcc parp ilf ilf complex study provides new information interacting networks sks may contribute future approaches better understanding mtor pathway
salivary biomarkers could helpful characterize breast cancer therefore review performed evaluate capability salivary biological markers diagnosis monitoring breast cancer studies eligible inclusion assessed potential diagnostic value discriminatory properties biological markers saliva patients breast cancer search performed six electronic databases cochrane lilacs pubmed science direct scopus web science addition biomarkers classified according potential clinical application identified pertinent studies met inclusion criteria combined biomarker approaches demonstrated better ability predict breast cancer patients individual biomarkers single biomarlcer namely proline reported great capacity early late stage breast cancer diagnosis taurine showed interesting capability identify early breast cancer individuals furthermore valine also demonstrated excellent diagnostic test accuracy advanced stages breast cancer seven studies reported sensitivity specificity zhang streckfus brooks cheng bigler zhong streckfus varied considerably respectively general salivary biomarkers identified advanced stages breast cancer better early stages currently limited evidence confirm putative implementation salivary biomarkers diagnostic tools breast cancer however current review provides new research directions elsevier ireland ltd rights reserved
secretory immunoglobulin siga antibody secreting cells ascs major effector cells mucosal immunity immunoglobulin igg ascs also associated mucosal immunity study aimed explore distribution asc populations palatine tonsils bactrian camels different ages eighteen bactrian camels divided following three age groups pubertal years middle aged years old years siga igg ascs within different sites palatine tonsils observed histological immunohistochemical techniques densities analyzed using statistical methods results age groups showed siga igg ascs primarily distributed subepithelial compartments reticulated crypt epithelium secondarily distributed subepithelial compartments stratified surface squamous epithelium ascs located extrafollicular region densities three areas significantly decreased turn however densities siga ascs significantly higher igg ascs regions densities asc populations decreased age results confirmed bactrian camel palatine tonsils primary mucosal immune organ producing siga ascs subepithelial compartment reticulated crypt epithelium primary region colonization functional activity siga igg ascs
semecarpus anacardium tree species produces secondary metabolites medicinal importance roots plant traditionally used folk medicines different strains agrobacterium rhizogenes atcc lba used induction hairy roots vitro grown tissues plant hairy root initiation observed days infection optimum transformation frequency achieved leaf explants atcc strain infection time min resulted greater transformation frequency compared min respectively hairy roots cultured growth regulator free semi solid woody plant medium differentiated callus whole shoots infected atcc found produce transformants upon cultivation days induction hairy roots stem explants infected atcc lower compared leaves days cultivation lba strains transformation efficiency shoots days cultivation transformation frequency higher atcc strain irrespective explants hairy roots anacardium elongated slowly upon transfer half strength liquid medium passages liquid medium slender hairy roots started differentiating separated original explants visible growth roots observed hormone free liquid medium months culturing polymerase chain reaction gene specific primers rol genes confirms positive transformation events
sequential measurement bcr abl mrna levels reverse transcription quantitative polymerase chain reaction qpcr embedded management patients chronic myeloid leukaemia cml played important role remarkable improvement patient outcomes seen disease provider external quality assessment eqa area neqas leucocyte immunophenotyping ukneqas unique perspective changing face bcr abl testing cml assess impact technical standardisation development international scale upon accuracy bcr abl testing reviewed eqa trial data comparison participant results identified considerable variability high low levels disease including therapeutically important decision points however results converted showed less variability compared unconverted data sets also found different methods converting produce consistently different median results within ukneqas data sets data suggests whilst development improved comparability results centres still need improvement processes converting raw results order fully realise benefits molecular monitoring cml
serine hydroxymethyltransferase ubiquitous representative family fold type pyridoxal phosphate dependent enzymes reaction catalyzed enzyme reversible transfer beta serine tetrahydropteroylglutamate represents link amino acid folates metabolism operates major source one carbon units several essential biosynthetic processes serine hydroxymethyltransferase intensively investigated interest aroused complex mechanism hydroxymethyltransferase reaction broad substrate reaction specificity although increasing availability crystallographic data characterization several site specific mutants helped understanding previous functional structural studies also represent starting point novel investigations review focus recently highlighted catalytic structural evolutionary aspects serine hydroxymethyltransferase article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
several complex diseases caused malfunction human metabolism deciphering underlying molecular mechanisms elucidate aetiology systems biology integrative approach combining experimental computational biology identify describe molecular mechanisms complex biological systems systems medicine potential elucidate onset progression complex metabolic diseases use computational approaches advances biotechnology resulted provision high throughput data provide information different metabolic processes systems medicine approach utilize data reconstruct genome scale metabolic models used study function specific enzymes pathways context complete metabolic network review outline importance genome scale models systems medicine discuss may contribute towards development personalized medicine
several recent studies reported selectinsare produced ischemia reperfusion injury selectin ligands play important role cell binding endothelium liver metastasis portal clamping pancreaticoduodenectomy vessel resection pancreatic head cancer causes hepatic ischemia reperfusion injury might promote liver metastasis investigated liver colonization pancreatic cancer cells hepatic ischemia reperfusion examined involvement selectin ligands human pancreatic cancer cell line capan injected spleen mice hepatic ischemia reperfusion group addition investigate effect anti selectin antibody liver colonization group mice received intraperitoneal injection anti selectin antibody following hepatic ischemia reperfusion tumor inoculation group four weeks later mice sacrificed number tumor nodules liver compared mice without hepatic ischemia reperfusion control group incidence liver metastasis group significantly higher control group moreover mice group significantly tumor nodules compared control group median nodules group mice developed liver metastases pcr southern blotting liver extracts showed expression selectin mrna hepatic ischemia reperfusion significantly higher basal levels hepatic ischemia reperfusion increases liver metastases selectin expression pancreatic cancer results suggest selectin produced due hepatic ischemia reperfusion involved liver metastasis
sex affects presentation treatment outcomes abdominal aortic aneurysm aaa although aaas less prevalent women least general population women aaa poorer prognosis comparison men sex differences genetic predisposition aneurysm disease remain established study investigated familial risk aaa women compared men living aaa patients included prospective database invited multidisciplinary vascular genetics outpatient clinic assessment family history using detailed questionnaires aaa risk male female relatives calculated separately stratified sex aaa patients families aaa patients investigated patients least one affected relative female relatives fold male relatives fold higher risk estimated sex specific population risk relatives female aaa patients higher aneurysm risk relatives male patients corresponding fold increases aneurysm risk female male relatives respectively risk aortic aneurysm relatives aaa patients higher expected population risk excess risk highest female relatives aaa patients relatives female aaa patients findings endorse targeted aaa family screening female male relatives aaa patients
sex differentiation flower buds important developmental process directly affects fruit yield cucumber cucumis sativus plant hormones gibberellins gas ethylene promote development male female flowers respectively however regulatory mechanisms induced male flower formation potential involvement ethylene process still remain unknown study unravel genes gene networks involved regulated cucumber sexual development performed high throughout rna seq analyses compared transcriptomes shoot tips treated untreated gynoecious cucumber plants results showed application markedly induced male flowers decreased ethylene production shoot tips furthermore transcript levels csacs gene ethylene receptor csetr ethylene responsive transcription factors dramatically changed treatment suggesting potential involvement ethylene regulated sex expression cucumber interestingly regulated transcript class floral homeotic gene cag indicating may also influence cucumber sex determination ethylene independent process results suggest novel model hormone mediated sex differentiation provide theoretical basis dissection regulatory mechanism male flower formation cucumber statement reveal regulate sex expression cucumber via ethylene dependent manner csacs csetr erfs probably involved process moreover cag class floral homeotic gene may also participate modulated cucumber sex determination pathway ethylene independent
siderophores enterobactin ent small molecules selectively imported bacteria along iron cognate transporters siderophore conjugates thus promising strategy delivering functional reagents bacteria work present easy perform one pot chemoenzymatic synthesis functionalized monoglucosylated enterobactin mge functionalized mge conjugated rhodamine fluorophore affords rhb glc ent selectively label gram negative bacteria utilize ent including coli strains aeruginosa cholerae bacterium utilizes linearized ent also weakly targeted moreover targeting effective iron limiting iron rich conditions results suggest rhb glc ent probe sensitive bacterial strain also iron condition environment
since chinese enzymologists obtained lot distinguished achievements basic research enzymes celebration anniversary progress biochemistry biophysics paper attempted review selected achievements systematically enzymic research china
since humans chimpanzees split common ancestor million years ago human metabolism changed dramatically change includes adaptations high quality diet evolution energetically expensive brain dramatic increases endurance abilities capacity energy storage white adipose tissue human metabolism continues evolve modern human populations response local environmental cultural selective forces understanding nature selective forces physiological responses human evolution compelling challenge evolutionary biologists complex genetic architecture surrounding metabolic phenotypes indicates selection probably altered allelic frequencies across many loci populations experiencing adaptive metabolic change fit environment recent analysis supports hypothesis finding classic selective sweeps single loci rare past years human evolution detection selective signatures multiple loci well exploration physiological adaptation environment humans require cross disciplinary collaboration including incorporation biological pathway analysis review explores thrifty genotype hypothesis high altitude adaptation cold resistance adaptation genetic evidence surrounding proposed metabolic adaptations attempt clarify current challenges avenues future progress
since discovery first mammalian microrna mirna two decades ago plethora mirnas identified humans amounting essential post transcriptional regulation gene networks integral developmental pathways immune response surprising dysregulation mirnas often associated aetiology complex diseases including cancer diabetes autoimmune disorders despite massive expansion small rna studies extensive investigation diverse disease contexts role mirnas type diabetes recently explored key studies using human islets recently implicated virus induced mirna dysregulation pivotal mechanism beta cell destruction interplay mirnas immune system beta cell survival illustrated studies using animal cellular models disease role specific mirnas major players immune system homeostasis highlights exciting potential therapeutics prognostic biomarkers type diabetes
since lacz alpha based blue white screening system introduced molecular biology several different visual reporter systems developed used various purposes escherichia coli common limit existent visual reporter systems extracellular chromogenic substrate added visible pigment production study developed new blue white screening system based non ribosomal peptide synthetase encoded idgs streptomyces phosphopantetheinyl transferase encoded sfp bacillus idgs activated apo form holo form via posttranslational modification catalyzed sfp synthesize blue pigment indigoidine using glutamine amino acid abundant cells substrate new blue white screening system contains recipient coli strain optimized idgs gene cassette cloning vector harboring sfp gene frame insertion multiple cloning site close terminal demonstrated idgs sfp based blue white screening system powerful alternative lacz alpha based screening system require external substrate addition
skin wounds datation one challenging problems forensic pathology vitality recent wound affirmed inflammatory cell visible literature numerous studies wound vitality looking markers involved coagulation inflammation using various methods enzymology molecular biology immunohistochemistry update first introduce methodological principles respect review main studies available literature insist immunohistochemistry seems valuable method given easiness perform possibility analyze localization molecules interest markers promising tnf alpha beta tgf alpha tgf beta using daily practice first results need confirmed studies driven independent teams integrating multiple controls notably antibodies tested numerous postmortem wounds indeed critical risk overexpression post mortem wounds interesting markers secondary invalidated post mortem false positivity fibronectin selectin finally optimal sensibility specificity values would probably reached combining several markers validated large groups pre post mortem wounds elsevier masson sas rights reserved
small gtp hydrolyzing enzymes gtpases rhoa family play manifold roles cell biology regulated upstream guanine nucleotide exchange factors gefs herein focus gefs vav subfamily vav originally described proto oncogene hematopoietic lineage gefs vav vav broadly expressed various tissues particular gef vav may play important roles developing nervous system differentiation neural stem cells major lineages namely neurons oligodendrocytes astrocytes discuss putative regulatory roles progenitor differentiation developing retina polarization neurons formation synapses migration oligodendrocyte progenitors establishment myelin sheaths propose vav mediates response various neural cell types environmental cues
main concerns vivo application naked small interfering rna rapid degradation urinary excretion resulting short plasma half life study investigated conjugation polyethylene glycol peg variable chain length affects sirna pharmacokinetics biodistribution peg chains conjugated chemically stabilized sirna terminal end passenger strand using click chemistry sirna conjugate remained functionally active showed significantly prolonged circulation blood stream intravenous injection sirna conjugated kda peg pegk sirna persistent approximately pegk sirna remained post injection uncoupled sirna rapidly removed min vivo fluorescent imaging living animal showed increased concentration sirna peripheral tissue delayed urine excretion coupled peg biodistribution studies northern blotting revealed equal distribution conjugated sirna liver kidney spleen lung without significant degradation post injection study demonstrates peg conjugated sirna applied delivery system improve sirna bioavailability vivo may potentially increase efficiency sirna therapeutic applications
species arcobacter genus considered emerging foodborne waterborne however presence arcobacter spp vegetables little known studies focused foods animal origin hand quinolones considered first line drugs treatment infection campylobacteria human patients data currently available resistance levels antibiotics among arcobacter species therefore aim study investigate presence diversity arcobacters isolated fresh vegetables lettuces spinaches chards cabbages resistance quinolones isolates also investigated one hundred fresh vegetables samples purchased seven local retail markets valencia spain eight months analysed study included lettuces spinaches chards cabbages samples analysed culture molecular methods enrichment culture analysed samples arcobacter positive twenty five isolates obtained direct detection pcr low arcobacter spp positive samples percentage increased considerably enrichment polymerase chain reaction restriction fragment length polymorphism pcr rflp isolates identified butzleri cryaerophilus two butzleri isolates showed resistance levofloxacin ciprofloxacin sequencing fragment qrdr region gyra gene quinolones resistant isolates revealed presence mutation position gene transition study first report presence pathogenic species arcobacter spp chards cabbages confirms fresh vegetables act transmission vehicle humans moreover presence butzleri quinolone resistant vegetables could pose potential public health risk elsevier ltd rights reserved
soybean oil important carbon source kitasamycin fermentation streptomyces kitasatoensis study three different surfactants tween tween sodium dodecyl sulfate sds added fermentation medium improve soybean oil utilization results indicated surfactants promote kitasamycin biosynthesis sds added beginning fermentation kitasamycin production increased content improved compared control treatment surfactant added oil consumption rate lipase activity also improved presence sds producing organic acids benefiting kitasamycin biosynthesis high butyric acid concentration fermentation medium containing sds repressed acetylation promoted component accumulation additionally utilization oil components kitasatoensis altered specifically linoleic acid primarily used fermentation process sds whereas oleic acid primarily used fermentation process surfactant added international union biochemistry molecular biology inc volume number pages
soybean transformation ovary drip improved optimizing length transformation pathway cutting styles modifications facilitated soybean transformation manipulation improved transformation reproducibility efficiency using linear minimal gus gene cassette foreign dna maximum transformation frequency obtained flowers soybean cultivar liaodou styles mostly removed whereas removal stigma partial style cutting partial ovary cutting gave transformation frequencies respectively average transformation frequency obtained flowers three soybean cultivars liaodou liaodou tiefeng transformed optimized method southern blotting analysis showed gus reporter gene encoding beta glucuronidase stably inherited simple pattern reverse transcription polymerase chain reaction pcr gus staining confirmed expression gus gene transgenic plants
soybeans part traditional food consumed asia countries study investigated inhibitory effects soybean oligosaccharides water soluble soybean fibre soyafibe putrefactive compounds soy protein gut microbiota rats caecal microbial fermentation products microbiota rats fed soy protein whole soybean flour sfl protein content diets determined caecal environment rats fed soy protein without dietary fibre soyafibe sfb also determined compared group low indole content high lactic acid shown sfl sfb group respectively using rrna genes polymerase chain reaction denaturing gradient gel electrophoresis pcr dgge pyrosequencing prevotella gram negative anaerobic rods detected dominant sfl sfb groups findings indicated fermentable polysaccharides soybeans inhibitory effects formation putrefactive compounds generated soy protein microbiota elsevier rights reserved
sperm cells provide essential usually diminutive ingredients successful sexual reproduction despite conserved function sperm competition coevolution female traits drive spectacular morphological change cells characterize four repeated instances convergent evolution sperm gigantism caenorhabditis nematodes using phylogenetic comparative methods species species extreme end fold range sperm cell volumes across genus sperm capable comprising egg cell volume representing severe attenuation magnitude anisogamy furthermore uncover significant differences mean variance sperm size among genotypes sexes within individuals identical genotypes demonstrate developmental basis sperm size variation within species becomes established early stage sperm development formation primary spermatocytes subsequent meiotic divisions contribute little sperm size variability findings provide first insights developmental determinants inter intraspecific sperm size differences caenorhabditis hypothesize life history ecological differences among species favored evolution alternative sperm competition strategies toward either many smaller sperm fewer larger sperm
spontaneous preterm delivery prematurity low birth weight due prematurity account great part neonatal morbidity mortality inflammation may cause preterm labor involvement different mediators produce diverse aspects inflammatory response although bacteria considered main trigger intrauterine infection inflammation immunological factors also appear involved recently molecular genetic studies helped better understand underlying pathophysiologic processes mammalian pregnancy maternal fetal tolerance involves number immunosuppressive factors produced placenta recently placenta derived exosomes emerged new immune regulators maternal immune tolerance review focuses specific immune parameters become altered human pregnancy identity function immune modulators best characterized date well comprehensive evaluation pregnancy associated mechanisms downregulate proinflammatory immunity level sufficient prevent triggering premature common pathway labor damage developing organs
standard neutral population genetics theory strictly fixed population size important limitations alternative model allows independently fluctuating population sizes reproduces standard neutral evolution reviewed study situation competing species neutral equilibrium population size population size fluctuations nevertheless favor fixation one species case separation timescales emerges naturally allows adiabatic elimination fast population size variable deduce fluctuation induced selection dynamics near equilibrium population size results highlight incompleteness standard population genetics strictly fixed population size
staphylococcal nuclease termed nucl considered important virulence factor unique marker widely used detection staphylococcus aureus second functional thermostable nuclease termed nuc aureus characterized recombinant expression escherichia coll sequence alignment phylogenetic analysis revealed nuc conserved protein staphylococci group compared nucl recombinant nuc showed nuclease activity zymogram test able degrade various types nucleic acids optimal reaction temperature nuc respectively enzymatic activity nuc stimulated presence dithiothreitol beta mecaptoethanol tritonx tween urea however activity decreased sharply exposed heavy metals presence edta sds nuc showed weaker activity lower thermostability different sensitivity chemical agents compared nucl consistent differences sequence pattern structure predicted furthermore nuc nuc double deletion mutant aureus respective complementation experiments suggest major role nuc terms thermonuclease activity aureus elsevier gmbh rights reserved
studies described metabolism toxico logic analysis nonopioid cough suppressant dropropizine phenyl piperazinyl propandiol dro human urine using gas chromatography mass spectrometry metabolisin studies showed dro metabolized humans mainly hydroxylation aromatic ring dealkytation parent drug hydroxyl metabolite corresponding phenylpiperazines degradation piperazine moiety authors systematic toxicologic analysis sta procedure using full scan acid hydrolysis liquid liquid extraction microwave assisted acetylation allowed unambiguous detection dro mentioned metabolites human urine hours intake single common therapeutic dose target analytes found parent compound dro earlier phase excretion hydroxylated metabolite para hydroxy dro later phase excretion allowed unambiguous detection intake dro also differentiation phenylpiperazine derivatives
studies demonstrated low expression mir associated cell proliferation migration wide variety tumors studied expression mir relation occurrence development breast cancer total rna breast cancer tissue corresponding adjacent normal tissue extracted used detect mir expression quantitative real time polymerase chain reaction qrt pcr also transfected breast cancer cells hsa mir mimics hsa mir inhibitor mimics negative control mimics inhibitor negative control inhibitor cell proliferation analyzed colony formation assays methyl thiazolyl tetrazolium assays cell proliferation breast cancer cells decreased overexpression mir increased following mir suppression cell migration invasion assessed using transwell wound healing assays respectively also decreased overexpression mir increased mir suppression breast cancer cells finally western blot assays showed expression mir inhibited expression transforming growth factor beta tgf beta collectively data suggest mir may inhibit tgf beta protein expression may turn contribute tumor formation
studies effects dietary protein level human metabolism usually concentrated effects protein deprivation establishing minimum dietary requirement contrast less known effects high protein diets although general levels protein intake developed world increasing high protein diets advocated maintaining increasing muscle mass certain groups population article therefore examines response protein metabolism high dietary protein studied adults nitrogen balance isotopic tracer techniques concentrating evidence increased lean body mass concluded high protein feeding initially results protein retention greater cycling body protein response meals neither balance isotopic tracer methods possess sufficient sensitivity detect whether long term increase ill functional lean tissue ensues improved methods body composition measurement needed establish moreover absence strong evidence high protein diets confer advantage terms strength health must weighed potentially injurious consequences
studies mtor pathway prompted speculation diminished mtor complex mtorc function may involved controlling aging process previous studies shown diminished mtorc activity tissues three long lived mutant mice snell dwarf mice growth hormone receptor gene disrupted mice ghrko article mice deficient pregnancy associated protein pappa ways lower mtor signals slow aging age related diseases however well characterized show snell ghkro pappa mice express high levels two proteins involved dna repair methylguanine dna methyltransferase mgmt myc downstream regulated gene ndrg furthermore report lowering mtor enhances mgmt ndrg protein expression via post transcriptional mechanisms show ccr complex post transcriptional regulator gene expression downstream mtorc pathway may responsible upregulation mgmt ndrg three varieties long lived mice data thus suggest novel link dna repair mtor signaling via post transcriptional regulation involving specific alteration ccr complex whose modulation could control multiple aspects aging process
studies whether family history venous thromboembolism vte affects long term mortality vte missing aim study determine whether vte affects long term mortality first episode vte using swedish medical databases conducted year nationwide cohort study adult swedish born patients included multi generation register born later first time vte using cox regression assessed mortality hazard ratios hrs confidence intervals cis totally patients vte first degree vte parent sibling patients without vte significantly vte provoking risk factors comorbidities mortality first years first time vte decreased vte compared without crude adjusted years follow significant effect vte mortality crude adjusted cancer associated mortality common without first years years difference cancer associated mortality results suggest patients vte lower thrombotic threshold need less provoking factors comorbidities also slightly lower total cancer mortality first years vte
studies proved addition nitrate rumen could lead reduction methane emission mechanism function involved competition effect nitrate hydrogen consumption inhibitory effect generated nitrite methanogen proliferation present study investigated alternative mechanism denitrifying anaerobic methane oxidizing damo bacteria damo archaea anammox bacteria may exist rumen therefore methane oxidized addition nitrate ruminal batch culture model used test effects addition nano nhcl culture substrate methane production fermentation patterns population methanogens anaerobic methanotrophic anme results showed ruminal culture detected polymerase chain reaction pcr using special primer sets addition nitrate reduced methane production relative proportions methanogen whereas increased relative proportion combined addition ammonia salt nitrate show inhibitory effect methane production accelerated nitrate removal detect damo archaea ruminal culture real time pcr using anme special primer sets present study may encourage researchers pay attention methane oxidation performed anaerobic methanotroph studying strategies inhibiting ruminal methane emission
study design three level rat tail caudal intervertebral disc ivd degeneration ivdd model established study effects static compression extracellular matrix ecm remodeling integrin signaling ivds ivdd objective aim study investigate effect compression force ecm remodeling integrin signaling ivds ivdd summary background data integrins sense mechanical environment alteration via binding ecm ligands trigger intracellular signaling pathological ecm remodeling ivdd however role compression force ecm remodeling integrin signaling ivdd remains elusive methods compared classical one level rat tail ivdd model exerts axial stress caudal vertebral bodies three level model established using ilizarovtype apparatus exert stress caudal vertebral bodies rat tails four weeks exclude side effects surgical stab injury manipulated discs intact coccygeal disc analyzed results three level ivdd model significant degeneration disc observed quantitative real time polymerase chain reaction qrt pcr showed elevated mrna expression collagen types iii matrix metalloproteinases mmps decreased mrna expression collagen type disc compression loading altered expression integrin alpha beta upregulated alpha beta downregulated cells activated integrin downstream signaling contrast one level model showed severe disc degeneration ecm remodeling integrin alpha alpha alpha beta upregulated whereas alpha downregulated similar activation integrin signaling observed conclusion static compression altered collagen mmp expression promoted beta integrin expression signaling ivd compared one level rat tail ivdd model three level model showed milder effects disc degeneration ecm remodeling integrin expression suggesting one level model might involve causes induce ivdd via mechanisms independent compression force
studying cell differentiation transformation allows better understanding mechanisms involved initiation evolution cancer role proteins participate processes dependent location within cell determining subcellular localization proteins changes localization therefore paramount elucidating role using quantitative mass spectrometry characterized protein expression subcellular localization nearly proteins seven different colorectal cancer crc cell lines well normal colon fibroblasts intestinal epithelial cells cellular characterization allowed identification colon cancer associated proteins differential expression patterns well deregulated protein networks pathways indeed results demonstrate differential expression proteins involved cell adhesion cytoskeleton transcription colon cancer cells compared normal colon derived cells pathway analyses identified different cellular functions including endocytosis eif signaling whose deregulation correlates mutations found different crc phenotypes results provide unbiased quantitative high throughput approach measure changes protein expression subcellular protein locations different crc cell lines
substrate cell patterning techniques widely used cell biology study cell cell cell substrate interactions conventional patterning techniques work well simple shapes small areas selected bio materials article describes method distribute cell suspensions well substrate solutions complex long closed dead end polydimethylsiloxane pdms microchannels using negative pressure method enables researchers pattern multiple substrates including fibronectin collagen antibodies sal poly lysine pdl laminin patterning substrates allows one indirectly pattern variety cells tested myoblasts neuronal cell line embryonic rat cortical neurons amphibian retinal neurons addition demonstrate technique directly pattern fibroblasts microfluidic channels via brief application low vacuum cell suspensions low vacuum significantly decrease cell viability shown cell viability assays modifications discussed application method different cell substrate types technique allows researchers pattern cells proteins specific patterns without need exotic materials equipment done laboratory vacuum
sudden unexplained nocturnal death syndrome sunds perplexing disorder forensic pathologists clinic physicians clinical features sunds survivors suggested sunds similar brugada syndrome brs leucine rich repeat containing lrrc gene newly identified gene linked dilated cardiomyopathy disease associated sudden cardiac death investigate prevalence spectrum genetic variants lrrc gene sunds brs coding regions lrrc genetically screened sporadic sunds victims january december years ten brs patients january december years using direct sanger sequencing afterwards lrrc missense variant carriers screened panel genes known associated inherited cardiac arrhythmia cardiomyopathy using target captured next generation sequencing study silico predicted malignant lrrc mutation detected one sunds victim without pathogenic rare variant panel arrhythmia cardiomyopathy related genes also provided evidence show rare variant might contribute genetic cause one sunds victim two brs family members first report genetic screening lrrc chinese sunds victims brs patients lrrc may new susceptible gene sunds lrrc variant initially genetically linked brs associated arrhythmia
sulfatases highly conserved family proteins cleave sulfate esters wide range substrates importance sulfatases human metabolism underscored presence least eight human monogenic diseases caused deficiency individual sulfatases sulfatase activity requires unique posttranslational modification impaired patients multiple sulfatase deficiency msd due mutation sulfatase modifying factor sumf review current knowledge future perspectives evolution sulfatase gene family role enzymes human metabolism new developments therapy sulfatase deficiencies
symptomatic chronic chagas disease affects patients infected trypanosoma cruzi lack reliable early markers cure therapy hinders disease management clinical trials new drugs performed study months follow compare changes immune parameters cruzi specific immune responses surrogate markers response therapy patients treated benznidazole untreated patients pilot open label randomised clinical trial treatment benznidazole versus treatment patients indeterminate chronic cruzi infection groups investigated changes cell activation cell subpopulations regulatory cell counts scd levels cruzi specific immune responses responses fourteen patients included study seven group median age years female bolivian benznidazole administered day days three patients discontinued benznidazole owing adverse reactions evaluated end follow period treated patients showed significantly less immune activation lower regulatory cell counts increased thl response randomised pilot clinical trial administering benznidazole patients indeterminate chronic chagas disease brings changes adaptive immunity leading general decrease inflammatory status apparently beneficial response could act basis monitoring new antiparasitic drugs elsevier rights reserved
systematic studies micronutrients brain formation hindered restrictions animal models adult post mortem tissues recently advances stem cell biology enabled recapitulation early stages human telencephalon development vitro present work analyzed cerebral organoids derived human pluripotent stem cells synchrotron radiation ray fluorescence order measure biologically valuable micronutrients incorporated distributed exogenously developing brain findings indicate elemental inclusion organoids consistent human brain tissue involves occurrence different concentration gradients also suggests active regulation elemental transmembrane transport finally analysis pairs elements shows interesting elemental interaction patterns change days development suggesting short long term associations storage similar compartments relevance time dependent biological processes findings shed light trace elements important human brain development support studies aimed unravel consequences disrupted metal homeostasis neurodevelopmental diseases including manifested adulthood
targeted sequencing growing screening methodology used research medical genetics identify genomic alterations causing human diseases general list possible genomic variants derived mapped reads variant calling step processing step usually based variant coverage although may affected several factors therefore undercovered relevant clinical variants may reported affecting pathology diagnosis treatment thus prior quality control experiment critical determine variant detection accuracy avoid erroneous medical conclusions several quality control tools focused issues related whole genome sequencing however quality control assess experiment gene genomic region performances based achieved coverages propose tarseqqc package quality control experiments tool freely available bioconductor repository tarseqqc used analyze two datasets low performance primer pools features detected enhancing quality experiment results read count profiles also explored showing tarseqqc effectiveness exploration tool proposalmay valuable bioinformatic tool routinely experiments research andmedical genetics
tea catechins epicatechin epigallocatechin epicatechin gallate epigallocatechin gallate afford many metabolites including gamma valerolactone derivatives metabolic pathways human body two gamma valerolactone metabolite analogues hydroxyphenyl group synthesized optically active authentic standards
tea domain transcription factor tead critical functions process embryonic development expressed various cancers however important role tead human oral squamous cell carcinomas osccs remain unclear investigated tead expression level functional mechanism oscc using quantitative reverse transcriptase polymerase chain reaction western blot analysis immunohistochemistry furthermore tead knockdown model used evaluate cellular proliferation cell cycle analysis interaction tead yes associated protein yap reported transcription coactivator cellular proliferation current study found tead expression increased significantly vitro vivo correlated tumoral size oscc patients tead knockdown oscc cells showed decreased cellular proliferation resulting cell cycle arrest phase regulation cyclins cyclin dependent kinases cdks regulation cdk inhibitors also found tead yap complex nuclei may related closely transcriptions arrest related genes taken together concluded tead might play important role tumoral growth potential therapeutic target osccs elsevier inc rights reserved
techniques human skeletal muscle research necessity predominantly descriptive microdialysis raised high expectations could meet demand method allows mechanistic investigations performed human skeletal muscle present review views given well initial expectations use microdialysis technique skeletal muscle fulfilled areas additional work needed order validate microdialysis important metabolic technique tissue microdialysis catheter equated artificial blood vessel introduced tissue means vessel concentrations compounds interstitial space monitored concentration substances collected samples dependent rate perfusate flow perfusate flow slow enough allow complete equilibration interstitial perfusate fluids concentration perfusate maximal identical interstitial concentration microdialysis data may influenced changes blood flow especially instances tissue diffusivity limits recovery vivo recovery vitro whereas recovery vivo less microdialysis data indicate significant arterial interstitial glucose concentration gradient exists skeletal muscle adipose tissue rest concentrations glucose lactate dialysate skeletal muscle close expected values glycerol values obtained muscle still puzzling ethanol added perfusate cleared tissue rate determined nutritive blood flow microdialysis ethanol technique concluded microdialysis skeletal muscle become important technique mechanistic studies human metabolism nutrition
testicular spermatogonial stem cells sscs heterogeneous population stem cells definitive marker primitive subset undergoes asymmetric cell division remains identified novel subpopulation pluripotent small embryonic like stem cells vsels reported human mouse testes follicle stimulating hormone fsh receptors fshrs expressed sertoli cells testis granulosa cells ovary recently fshrs reported vsels ovaries bone marrow cord blood present study aimed investigate whether fshrs also expressed testicular stem cells vsels sscs possible modulation fsh using intact chemoablated busulfan mice chemoablated testis better model study stem cell biology since quiescent stem cells survive along sertoli cells tubules proliferating cell nuclear antigen positive small sized cells presumed vsels clearly visualized flow cytometry analysis revealed increase lin sca vsels total cells chemoablated testis fsh treatment small embryonic like stem cells expressing nuclear octamer binding transcription factor oct sscs cytoplasmic oct detected small embryonic like stem cells oct sca nanog sscs oct proliferation pcna specific transcripts upregulated fsh treatment stem cells expressed fshr stimulated fsh fshr predominant transcript maximally modulated fsh nuclear oct sca stem cell antigen positive vsels primitive stem cells testis fsh stimulates undergo asymmetric cell division including self renewal give rise sscs turn proliferate rapidly undergo clonal expansion differentiation
central dogma molecular biology describes information contained dna transformed rna finally proteins order proteins maintain functionality parent cell subsequent generations essential information encoded dna rna remains unaltered dna rna constantly exposed damaging agents modify nucleic acids change information encode much known cells respond damaged dna importance protecting rna become appreciated past decade modification nucleobase oxidation alkylation long known affect base pairing properties dna replication similarly recent studies begun highlight unwanted consequences chemical damage mrna decoding translation oxidation alkylation mrna appear drastic effects speed fidelity protein synthesis mrnas persist days certain tissues surprising recently emerged mrna surveillance rna repair pathways evolved clear correct damaged mrna
protein encoded cucumber mosaic virus cmv plays important pathogenicity role many solanaceous hosts mechanism inducing disease still unknown order investigate virulence protein nicotiana glutinosa plants terms chloroplast structure photosynthesis mutant fny cmv delta bpro express protein achieved introducing mutant sites gene fny cmv glutinosa seedlings inoculated wild type fny cmv mutant fny cmv delta bpro analyzed symptom expression chlorophyll content photosynthetic rate ultra structural alteration chloroplast days post inoculation wild type fny cmv caused symptoms severe mosaic leaf deformation stunting reduced photosynthetic rate chlorophyll content altered ultra structure morphological characters chloroplasts however host seedlings inoculated mutant fny cmv delta bpro expressed slight mosaic symptom photosynthetic rates chlorophyll contents significantly different mock inoculated plants ultra structure morphological characters chloroplasts appeared normal observed low photosynthetic rates chlorophyll contents related breakage chloroplast morphology ultra structure results northern blotting showed virulence protein associated high accumulation level cmv progeny rnas systemic leaves non expression protein reduced accumulation levels genomic rnas level subgenomic rna encoding protein found significantly decreased
ability predict circulating human metabolites candidate drug first man studies carried would provide clear advantage drug development recent report demonstrated vitro studies using human liver preparations reliably predict primary human metabolites plasma predictability secondary metabolites formed multiple reactions low total success rates assess use chimeric mice humanized liver animal model prediction human metabolism vivo metabolism studies debrisoquine warfarin demonstrated significantly higher concentrations primary human abundant metabolites serum plasma chimeric mice control mice humanized chimeric mice also capable producing human specific metabolites several house compounds generated one metabolism reaction model closer vivo human physiology therefore appears advantage vitro systems predicting complex metabolites human plasma however prediction human metabolites failed compounds highly metabolized mice although requiring careful consideration compound suitability model represents potential tool predicting human metabolites combination conventional vitro systems
ability undergo non oxidative metabolism ethanol fatty acid ethyl esters faees varies greatly among tissues organs gain greater understanding non oxidative ethanol metabolism faee aimed collect published data faee synthesis mammalian organs tissues identify tissues organs enzymes known likely possess faee synthetic activity systematic search relevant papers performed two independent reviewers examined potentially relevant abstracts articles faees pertain ethanol exposure determine whether met inclusion criteria information faee synthesis retrieved papers meeting inclusion exclusion criteria summarized organ tissue matrix examined systematic search four databases yielded articles investigated faee synthesis tissues tissue fractions cell lines articles attempted purify characterize enzymes involved faee synthesis two enzyme activities studied faee synthase faees conjugates ethanol free fatty acid acyl coa ethanol acyltransferase aeat conjugates ethanol fatty acyl coa activities expressed variety different enzymes faees activity widely studied purified several tissues shown associated several well known enzymes identity enzymes possessing aeat activity remains unknown organs tissues shown synthesize faees discussed special emphasis studies attempted elucidate enzymology faee synthesis tissues
acceptance tung oil enriched diet incorporation conjugated linolenic acid clna fillets genetically improved farmed tilapia gift investigated diet well accepted days clna incorporated fillets content total fatty acids addition biosynthesis conjugated linoleic acid isomers cla fillet total content clna presence alpha linolenic acid lna fillet total content eicosapentaenoic acid epa fillet total content docosahexaenoic acid dha fillet total content observed therefore consumption fish increase intake different clna cla lna epa dha play important role human metabolism
addendum guidelines prevention peanut allergy united states report niaid sponsored expert panel developed build previous food allergy guidelines several key studies demonstrated benefit early introduction allergenic foods landmark studies including learning early peanut leap leap enquiring tolerance trials created paradigm shift food allergy prevention take home messages guideline include peanut introduced early first year life majority infants peanut introduced home group infants medical assessment recommended severe eczema egg allergy summarize guideline recommendations endorsed canadian society allergy clinical immunology highlight important aspects relevant canadian practitioners
aim current study use gene therapy attenuate reverse degenerative process within intervertabral disc effect survivin gene therapy via lentiviral vector transfection course intervertebral disc degeneration investigated current study vivo rabbit model total skeletally mature female new zealand white rabbits randomly divided three groups punctured blank control group group punctured empty vector control group group treatment group group computed tomography guided puncture performed discs accordance previously validated rabbit annulotomy model intervertebral disc degeneration weeks lentiviral vector carrying survivin injected nucleus pulposus results demonstrated magnetic resonance imaging histology gene expression protein content apoptosis analyses group observed exhibit disc degeneration increased time significant difference observed two groups however reduced disc degeneration group compared punctured control groups difference statistically significant overall results present study demonstrated injection carrying survivin punctured rabbit intervertebral discs acted delay changes associated degeneration discs although data animal models extrapolated human condition caution present study suggests potential use gene therapy decelerate disc degeneration
aim study characterize determine inter serovar exchange ampc beta lactamase conferring plasmids isolated humans pigs swine environment plasmids isolated total antimicrobial resistant amr salmonella isolates representing human clinical cases pigs swine farm environment characterized replicon typing restriction digestion inter serovar transferability conjugation presence ampc beta lactamase enzyme encoding gene bla cmy southern hybridization based replicon typing majority plasmids belonged gamma inc group potential inter serovar plasmid transfer confirmed pcr detection amr genes plasmids isolated trans conjugants plasmids salmonella serovars anatum ouakam johannesburg typhimurium isolated cohort pigs environment heidelberg single human clinical isolate identical plasmids based digestion multiple restriction enzymes ecori hindiii psti southern blotting demonstrated likely horizontal inter serovar exchange plasmid encoding ampc beta lactamases resistance among mdr salmonella serotypes isolated pigs swine farm environment clinical human cases study provides valuable information role swine farm environment extension livestock farm environments potential reservoir resistant bacterial strains potentially transmit resistance determinants livestock case swine humans possibly hosts horizontal exchange plasmids elsevier rights reserved
aim study detect expression proliferatng cell nuclear antigen pcna myc epstein barr virus ebv associated gastric carcinoma ebvagc ebv negative gastric carcinoma ebvngc well expression ebv encoded proteins ebvagc effect carcinogenesis development gastric cancer pcna myc protein levels assessed immunohistochemistry ebvagc ebvngc specimens expression related genes ebv including nuclear antigen ebna genes latent membrane protein lmp early genes barf bhrf tested reverse transcription polymerase chain reaction pcr southern blotting pcna labeling index ebvagcs ebvng corresponding adjacent tissues ebvagcs respectively pcna significantly different ebvagc ebvngc ebvagc difference ebvagc corresponding adjacent tissues ebvagc also significant expression myc protein detected gastric carcinomas adjacent tissues significant difference two groups chi ebna mrna detected ebvagc cases ebna lmp mrna detected cases ebv positive samples exhibited barf transcripts exhibited bhrf transcripts myc expression correlate presence ebv ebvagc ebv infection may induce pcna expression lack ebna lmp protein expression ebvagc suggests ebna lmp correlate cell apoptosis myc expression early genes barf bhrf may play important role development progression gastric carcinomas immortalizing epithelial cells
aim study develop novel protocol generating large populations fully mature functional human mast cells hmc hematopoietic stem cells require less culturing time previously reported methods cells isolated fresh human buffy coats sequentially cultured different combinations scf selected culturing conditions time periods cells harvested immunohistochemical characterization morphological phenotypes functionally characterized assessing responses ige dependent independent stimuli measuring release inflammatory mediators cytokines moreover pharmacological profiles several classes anti inflammatory drugs inhibiting activation hmc also characterized developed novel protocol generate large homogenous populations mature functional hmc weeks cells expressed tryptase chymase activated anti ige cationic peptides calcium ionophores moreover ige dependent activation cells significantly inhibited anti inflammatory drugs morphological functional characteristics mast cells resembled mctc type connective tissue type hmc protocol represents novel time saving economical approach generating large numbers primary hmc functional studies mast cell biology profiling novel anti inflammatory therapeutic agents mast cell inhibitory properties humans
aim study evaluate occurrence toxoplasma gondii backyard pigs destined human consumption pernambuco state brazil blood tissue samples liver heart brain lung diaphragm collected pigs legal slaughterhouses tested gondii infection antibodies gondii found sera using immunofluorescence antibody test cut tissue samples seropositive pigs bioassayed mice tissue samples seropositive pigs mice bioassay submitted histopathology immunohistochemistry polymerase chain reaction pcr sequencing pig tissue samples bioassayed mouse samples positive gondii dna pig mouse tissues negative histopathology analysis immunochemistry using risk assessment questionnaire significant difference seroprevalence reproducer finishing pig data serve indicative sanitary conditions risk gondii infection backyard pigs preventive measures must implemented health services avoid toxoplasmosis human cases due ingestion pig meat
aim work analyse genotypes protein levels phenotypes genotypes patients classical form hydroxylase deficiency fifty four patients families female male mean age years different clinical manifestations salt wasting simple virilizing studied taq southern blotting used perform molecular analysis cyp gene cluster genotypes defined according gene organization within rccx modules serum isotypes assayed enzyme linked immunosorbent assay results revealed different haplotypes cyp gene cluster total functional activity classical pathway reduced individuals carrying different genotypes low concentrations patients complete partial allotype deficiency thirteen patients presented recurrent infections affecting respiratory urinary tracts none severe infections low correlated well rccx monomodular gene organization association haplotypes recurrent infections autoimmunity observed considering redundant gene cluster seems well protected gene segment along evolutionary process
alignment many short sequences dna called reads long reference genome common task molecular biology problem expanded handle typical workloads billions reads execution time becomes critical paper present novel reconfigurable architecture minimal perfect sequencing ramps existing solutions attempt align high percentage reads using small memory footprint ramps focuses performing fast exact matching using human genome reference ramps aligns short reads hundreds thousands times faster current software implementations soap bowtie thousand times faster gpu implementations soap whereas aligners require hours preprocess reference genomes ramps preprocess reference human genome minutes opening possibility using new reference sources genetically similar newly sequenced data
apicoplast unique non photosynthetic organelle found apicomplexan parasites due essential roles organelle widely considered target drugs diseases caused apicomplexans exploring genomes parasites would provide better understanding systematics basic molecular biology therapeutics however limited information available genomes apicomplexan parasites present study genomes two operational taxonomic units babesia known babesia lintan babesia xinjiang sheep sequenced assembled annotated using massive parallel sequencing based approach gene content gene order genomes similar size defined compared genetic differences assessed addition phylogenetic analysis genomic data sets carried assess relationships taxonomic units apicomplexan parasites complete genomic data sets publicly available results showed genomes encode genes respectively including ribosomal rna genes transfer rna genes protein encoding genes similar content babesia bovis orientalis gene regions might serve markers future epidemiological population genetic studies babesia species identified using sequence data subset six protein encoding genes close relationship babesia bovis cattle orientalis water buffalo inferred although focus present study babesia propose present sequencing bioinformatic approach applicable organellar genomes wide range apicomplexans veterinary importance elsevier rights reserved
arabidopsis thaliana bzip atbzip transcription factor regulates stress signaling pathogen defense flower development however molecular mechanism involved plant salt tolerance via overexpression transcription factor atbzip elusive investigation cell suspension cultures four different plant species cotton gossypium hirsutum virginia pine pinus virginiana white pine pinus strobus arabidopsis arabidopsis thaliana transformed via agrobacterium tumefaciens lba harboring pbi atzip integration atbzip genome hirsutum virginiana strobes thaliana confirmed polymerase chain reaction southern blotting northern blotting analyses six transgenic cell lines four species used analyze salt tolerance conferred overexpression atbzip results demonstrated expression atbzip enhanced salt tolerance transgenic cells transgenic lines improved salt tolerance associated increased activities atpase acid phosphatase decreased lipid peroxidation thiobarbituric acid reactive substances transgenic cell lines cotton virginia pine white pine arabidopsis investigation demonstrated expression atbzip gene transgenic cell lines reduced salt induced oxidative damage increasing activities atpase acid phosphatase overexpression atbzip gene could valuable engineering plant salt tolerance
arabidopsis thaliana bzip atbzip transcription factor regulates stress signaling however molecular mechanism remains elucidated investigation cell suspension cultures two different plant species rice oryza sativa white pine pinus strobes transformed using agrobacterium tumefaciens strain lba harboring pbi atzip integration atbzip gene genome rice white pine confirmed polymerase chain reaction pcr southern blotting northern blotting analyses six transgenic cell lines sativa three transgenic cell lines strobus used analyze salt drought cold tolerance conferred overexpression atbzip gene results demonstrated expression atbzip gene enhanced salt drought cold tolerance rice white pine transgenic cell lines rice transcription factor atbzip increased expression dependent protein kinase genes oscpk oscpk oscpk oscpk oscpk oscpk treatment salt drought cold results demonstrated overexpression atbzip gene transgenic cell lines improved salt drought cold stress tolerances regulating expression dependent protein kinase genes overexpression atbzip gene could alternative choice engineering plant abiotic stress tolerance
asymptomatic nature chlamydia trachomatis infections lack appropriate effects current prevention management call vaccine development evaluated recombinant subunit vaccine candidate based major outer membrane protein variable segments momp achieve maximal immunogenicity ease production purification momp constructed using highly immunogenic sequences momp thereby minimizing presence hydrophobic regions spacing immunogenic epitopes flexible amino acid sequence purification tag also added momp given intranasally without intravaginal boost cholera toxin adjuvant cbl mice screened immunogenicity protection live challenge infection trachomatis serovar bacterial shedding cell mediated responses antibody responses monitored immunized mice exhibited significantly less bacterial shedding better protected infertility compared unimmunized control mice immunizations stimulated systemic local specific antibody igg iggc iga responses primed cells produced interferon interleukins upon challenge recall antigen thus momp combination adjuvant stimulated effector cells generated protective immunity associated less pathology regard momp promising candidate development mucosal chlamydial vaccine
behavior cells react stimuli critically important drug development drug delivery understanding molecular basis many diseases however still lack comprehensive understanding interactions particularly relation drug delivery nanoparticles sensors issues article discusses importance quantifying interactions highlights key areas advances sensor technology potential transform understanding drug delivery cell biology
blow fly lucilia cuprina wiedemann parasitic insect major global economic importance maggots fly parasitize skin animal hosts feed excretions tissues cause severe disease flystrike myiasis although considerable research cuprina years little understood molecular biology biochemistry genetics parasitic fly well relationship hosts disease causes situation might change recent report draft genome transcriptome blow fly given new global insights biology interactions host animal aspects insecticide resistance molecular level genomic resource likely enable many fundamental applied research areas future present article gives background cuprina myiasis brief account past current treatment prevention control approaches provides perspective impact cuprina genome future research related parasitic flies design new improved interventions myiasis elsevier inc rights reserved
brown planthopper bph nilaparvata lugens stal one major pests rice throughout asia extensive use insecticides suppressing lugens resulted development insecticide resistance leading frequent control failures field aim present study evaluate resistance field populations lugens major rice growing states south india various insecticides also determined activity detoxifying enzymes esterases ests glutathione transferases gsts mixed function oxidases mfos moderate levels resistance detected field populations acephate thiamethoxam buprofezin resistance factors fold fold fold respectively compared susceptible strain low levels resistance imidacloprid resistance factor fold complete sensitivity etofenoprox resistance factor fold est activities field populations times higher susceptible strain gst mfo ratios varied respectively est activity found correlated acephate resistance high selection pressure organophosphate neonicotinoid insect growth regulator igr field likely contributing resistance bph multiple insecticides leading control failures results obtained beneficial ipm recommendations use effective insecticides bph
cdna amphip encoding amphioxus identified gut cdna library amphioxus branchiostoma belcheri contains open reading frame corresponding deduced protein amino acids phylogenetic analysis shows vertebrate invertebrate like proteins grouped together amphip falling base vertebrate like clade suggesting divergence vertebrate invertebrate genes probably occurs prior split invertebrate vertebrate common ancestor around million years ago northern blotting reveals ubiquitous expression pattern amphip adult tissues examined whole mount situ hybridization demonstrates tissue stage specific expression pattern amphip developing embryos larvae presumably ubiquitous expression pattern amphip adult amphioxus represents ancestral type gene prior split human paralogs tsp tissue stage specific expression pattern early embryonic development implicates role amphip anterior posterior patterning elsevier inc rights reserved
cell lineage tracing system used predominantly developmental biology studies use cre recombinase allows activation reporter specific cell line progeny used cell lineage tracing technique demonstrate chondrocytes directly transform osteoblasts osteocytes long bone mandibular condyle development using two kinds cre cola cre aggrecan cre ert agg cre ert crossed rosa tdtomato col aggrecan well recognized markers chondrocytes basis developed new method cell lineage tracing conjunction fluorescent immunohistochemistry define cell fate analyzing expression specific cell markers runx marker early stage osteogenic cells dentin matrix protein dmp marker late stage osteogenic cells used identify chondrocyte derived bone cells differentiation status combination broadens application cell lineage tracing also simplifies generation compound mice importantly number location differentiation statuses parent cell progeny displayed simultaneously providing information cell lineage tracing alone conclusion application cell lineage tracing techniques immunofluorescence powerful tool investigating cell biology vivo
chances raising crop productivity enhance global food security would greatly improved complete understanding biological mechanisms underpinned traits crop yield disease resistance nutrient water use efficiency crop genomes emerging time nearer basic information gene level begin assembling crop gene catalogues using data plant species understand genes function interactions govern crop development physiology unfortunately task creating complete knowledge base gene functions interaction networks trait biology technically challenging relevant data dispersed myriad databases variety data formats variable quality coverage paper present general approach building genomescale knowledge networks provide unified representation heterogeneous interconnected datasets enable effective knowledge mining gene discovery describe datasets outline methods work flows tools developed creating visualising networks major crop species wheat barley present global characteristics knowledge networks example linking seed size phenotype barley wrky transcription factor orthologous ttg arabidopsis illustrate value integrated data biological knowledge discovery software developed www ondex org knowledge resources http knetminer rothamsted created open source provide first step towards systematic evidence based gene discovery order facilitate crop improvement authors published elsevier open access article license
clinical development molecularly targeted cancer therapies enhanced proof mechanism action well proof concept relate molecular pharmacodynamics efficacy via changes cancer cell biology physiology resulting drug action intended target present introduction field clinical pharmacodynamics medical laboratory aspects practical incorporation clinical trials also describe key success factors useful judging quality clinical pharmacodynamic studies including biopsy quality suitability specimen handling assay fitness purpose reagent quality control introduction provides context following articles issue also appreciation role well conducted clinical pharmacodynamic studies oncology drug development elsevier inc rights reserved
condition dependence male sexual traits plays central role sexual selection theory relatively little however known condition dependence chemical signals used mate choice subsequent effects male mating success furthermore studies isolated specific nutrients responsible condition dependent variation male sexual traits used nutritional geometry determine effect protein carbohydrate intake male cuticular hydrocarbon chc expression mating success male decorated crickets gryllodes sigillatus show traits maximized moderate high intake nutrients ratio also show female precopulatory mate choice exerts complex pattern linear quadratic sexual selection condition dependent variation male chc expression structural equationmodelling revealed although effect nutrient intake mating success mediated condition dependent chc expression exclusively suggesting traits must also play important role collectively results suggest complex interplay nutrient intake chc expression mating success plays important role operation sexual selection sigillatus
construction physical three dimensional models biomolecules uniquely contribute study structure function relationship structures often perceived using two dimensional exclusively visual medium computer screen converting digital molecular data real objects enables information perceived expanded range human senses including direct stereoscopic vision touch interaction tangible models facilitate new insights enable hypothesis testing serve psychological sensory anchors conceptual information functions biomolecules recent advances consumer printing technology enable first time cost effective fabrication high quality scientifically accurate models biomolecules variety molecular representations however optimization virtual model printing parameters difficult time consuming without detailed guidance provide guide digital design physical fabrication biomolecule models research pedagogy using open source low cost software low cost printers use fused filament fabrication technology
creatine phosphocreatine creatine kinase circuit instrumental regulating high energy phosphate metabolism maintenance cellular energy turnover mechanisms creatine able buffer regulate cellular energy balance maintain acid base balance reduce effects oxidative stress led large number studies use creatine supplementation exercise performance treat diseases associated cellular energy depletion studies identified sex specific responses creatine supplementation perception females might less receptive benefits creatine supplementation therapy compared males review describe differences male female physique physiology may account differences discuss apparent endocrine modulation creatine metabolism females hormone driven changes endogenous creatine synthesis creatine transport creatine kinase expression suggest significant changes cellular energy circuit occur specific stages female reproductive life including pregnancy menopause recent studies suggest creatine supplementation may highly beneficial women certain conditions depression greater understanding pathways consequences alterations creatine bioavailability females needed ensure creatine used full advantage dietary supplement optimize enhance health outcomes women
current paper establishes criteria existence principal eigenvalues time periodic cooperative linear nonlocal dispersal systems dirichlet type neumann type periodic type boundary conditions shown nonlocal dispersal system principal eigenvalue following cases nonlocal dispersal distance sufficiently small spatial inhomogeneity satisfies called vanishing condition spatial inhomogeneity nearly globally homogeneous moreover shown principal eigenvalue time periodic cooperative linear nonlocal dispersal system exists algebraically simple linear nonlocal dispersal system may principal eigenvalue results established current paper extend literature time independent periodic nonlocal dispersal equations time periodic cooperative nonlocal dispersal systems serve basic tool study cooperative nonlinear systems nonlocal dispersal
decanting flooded gold mines threatens water supply witwatersrand south africa one intensively mined areas world large volumes acid mine drainage wastewaters require treatment decades possibly centuries appropriate treatment technology needs meet technical financial environmental social sustainable development criteria costs long term treatment providing initial decision gateway review details bioprocess development use sewage sludge electron donor carbon source microbial sulphate reduction wastewater treatment public utility operator investigated meeting requirements programme reviewed led fundamental studies microbial ecology enzymology mathematical process modelling pilot plant studies construction operation full scale plant treating mine water day shown became known rhodes biosure process careful regulation mine water sewage sludge dosing flow rates sulphate levels could reliably reduced hydraulic retention times low ancillary metal sulphide removal unit operations described well investigations socially sustainable use treated mine waters
definition biological individuality one discussed topics philosophy biology current debate focused almost exclusively evolution based accounts moreover several participants debate consider notions biological individual organism equivalent paper show debates would considerably enriched clarified philosophers took account two elements first physiological fields crucial understanding biological individuality second category biological individuals divided two subcategories physiological individuals evolutionary individuals suggests notions organism biological individual used interchangeably suggest combination evolutionary physiological perspective enable biologists philosophers supply account biological individuality comprehensive accordance scientific practices
delineation exercise biochemistry utilizing metabolic fingerprinting become established strategy present combined uplc nmr strategy supplemented photometric assays monitor response human urinary metabolome short maximal exercise seventeen male volunteers performed two identical sprint sessions separate days consisting three maximal runs using univariate multivariate analyses followed fluctuation metabolites postexercise hydroxyisovalerate hydroxybutyrate oxoisocaproate methyl oxovalerate hydroxyisobutyrate oxoisovalerate hydroxybutyrate hydroxyisobutyrate alanine pyruvate fumarate increased postexercise returned toward baseline lactate acetate higher baseline hypoxanthine inosine remained baseline throughout postexercise period urate decreased increased returning baseline valine isoleucine succinate citrate trimethylamine trimethylamine oxide tyrosine formate decreased postexercise returned baseline creatinine gradually decreased sampling period glycine aminohippurate hippurate remained baseline throughout postexercise period findings show even one half minute maximal exercise elicited major perturbations human metabolism several persisted least
demand expertise pathology diagnosis infectious diseases continually growing due increase immunocompromised patients emergence common uncommon diseases including tropical infections infections newly identified microbes microbiology laboratory plays crucial role diagnosing infections identifying responsible infectious agents establishing sensitivity pathogens drug therapy pathology however way correlate presence infectious agent reaction evokes cell tissue level pathologists working field pathology essential dispose competence cell tissue pathology well microbiology expertise includes understanding taxonomy classification pathogens well morphological criteria supporting identification moreover pathologists must master methods used detect pathogens fixed cell tissue samples notably immunohistochemistry situ hybridization polymerase chain reaction paradoxically increasing frequency lesions caused pathogens diagnosed pathology laboratory appears paralleled gradual loss expertise pathologists field infectious tropical diseases contend may due least part continuously increasing number samples tumor tissue pathologists deal rapidly expanding number tissue based biomarkers predictive value new anti cancer therapies review highlight current future issues pertaining pathology order increase awareness importance surgical molecular pathology intention contribute development best practice pathology
detection biomarkers crucial importance reducing morbidity mortality complex diseases thus great desire develop highly efficient simple sensing methods fulfill different diagnostic therapeutic purposes herein using tumor suppressor gene model target dna developed novel palindromic fragment incorporated molecular beacon perform multiple functions including recognition element signal reporter polymerization template primer upon specific hybridization target dna mbs interact extended polymerase without additional probes result hybridized targets peeled mbs initiate next round reactions leading unique strand displacement amplification sda newly proposed enzymatic amplification displays detection limit low excellent selectivity distinguishing single base mutation linear response range simplest sda sensing system far involving one type dna probe impressive sensing paradigm expected provide new insight developing new type dna probes hold tremendous potential important applications molecular biology research clinical diagnosis
development methods detection aflatoxin afb foods important practice ensuring food quality safety tests afb still conducted conventional methods antibody based elisa tests high performance liquid chromatography hplc however biosensor methods developed date screening tools field analysis compared immunology elisa like tests chromatography methods biosensors able provide rapid sensitive robust cost effective quantitative methods site testing work propose cellular biosensor based vero cells membrane engineered anti afb antibody biological recognition element reacting afbi molecules gold nanoparticle screen printed electrodes spes three electrode system order culture cells spes surfaces working electrodes coated poly lysine facilitate cell adhesion spes connected potentiostat device transducer chronoamperometric cyclic voltammetric measurements performed quantitative results obtained using cellular biosensor method afb compared obtained using hplc method pistachio samples spiked afb method displayed good sensitivity detection limit elsevier ltd rights reserved
development prophylactic vaccines remains largely empirical nature rarely general rules applied strategic decision formulation viral vaccine currently total virus agents unique virus families vaccines licensed food drug administration extensive structural information viral particles potential mechanisms protection available majority virus pathogens respective vaccines review quantitative features viral surface antigens relation molecular mechanisms cell activation point potential correlation density immunogenic proteins displayed surface vaccine antigen carrier success vaccine features help understand humoral immunity induced viral vaccines quantitative ground emphasize importance antigen density activation immune system although detailed mechanisms behind phenomenon remain explored implies size antigen carriers density immunogenic proteins displayed carriers important parameters may need optimized formulation vaccine american pharmacists association published elsevier inc rights reserved
diagnosis food allergy challenging due different immunologic mechanisms diversity symptoms open double blinded oral food challenge ofc performed children aged years suspected cow milk wheat allergy characterize immediate delayed transient symptoms evaluate role earlier food related symptoms immunoglobulin ige pmediated sensitization ofc outcome ofc resulted immediate positive reaction delayed positive reaction children transient reactions majority localized skin reactions seen almost third patients negative ofc result immediate localized skin reactions common milk challenge whereas immediate lower respiratory tract symptoms common wheat challenge although immediate reaction received adrenalin treatment reaction life threatening events multivariate analyses revealed independent risk factors immediate ofc outcome earlier moderate severe immediate food related reactions marked ige mediated sensitization suspected food case wheat age months accuracy ofcs enhanced without increasing risk serious allergic reactions taking account earlier food related symptoms level ige mediated sensitization refining knowledge transient nonspecific reactions applying standardized ofc protocols one day challenges
digestive system teleost fish high structural diversity based modes living environments diets study aims qualitatively quantitatively determine diet scorpaena notata describe adaptation histological structure digestive tract enzymatic secretion compared nature ingested prey study performed using three approaches histology different parts digestive tract stomach contents analysis enzymatic assay total small red scorpion fish individuals collected small landings region algiers composition diet shows notata macrophagous species large alimentary spectrum prey diet consists decapoda brachyura crustaceans fishes digestive enzymology test reveals activity chitinolytic enzymes particularly high scorpion fish stomach general major preys known carapace rich chitin result obtained extraction crude chitinases offal fish confirmed histological structure lamina propria stomach mucosa showing dense glandular exocrine serous form intestinal structure much less dense mucosa
dihydrochalcone phlorizin natural product dietary constituent found number fruit trees used pharmaceutical tool physiology research years phlorizin principal pharmacological action produce renal glycosuria block intestinal glucose absorption inhibition sodium glucose syrnponers located proximal renal tubule mucosa small intestine review covers role phlorizin played history diabetes mellitus use agent understand fundamental concepts renal physiology well summarizes physioiogy cellular glucose transport pathophysiology renal glycosuria reviews biology pathobiology glucose transporters discusses medical botany phlorizin potential effects plant flavonoids phlorizin human metabolism lastly describes clinical pharmacology toxicology phlorizin including investigational uses phlorizin phlorizin analogs treatment diabetes obesity stress hyperglycemia copyright john wiley sons ltd
diurnal light cycle crucial influence life earth unfortunately modern society modified life governing cycle stressing maximum production giving insufficient attention ecological balance homeostasis human metabolism aim study evaluate effects exposure lack exposure natural light rest activity rhythm cortisol melatonin levels well psychological variables humans natural conditions cross sectional study subjects allocated split two groups according workspace employees window group without window group participants women wore anactigraph actiwatch philips respironics measures activity ambient light exposure seven days concentrations melatonin cortisol measured saliva samples participants instructed collect saliva last day use actigraph subjects answered self reporting questionnaire srq measure presence minor psychiatric disorders montgomery asberg scale used measure depression symptoms pittsburgh sleep quality index questionnaire psqi used evaluate quality sleep rayleigh analysis indicates two groups window without window exhibited similar activities light acrophases relation light exposure mesor significantly higher window group without window group additionally window group presented highest amplitude light exposure cortisol levels significantly different groups without window window terms melatonin levels groups differed two different times day window group lower melatonin level higher level without window group higher cortisol levels positively correlated minor psychiatric disorders depressive symptoms lower melatonin levels correlated depressive symptoms poor quality sleep psqi study demonstrated may light pollution affect human physiology also lack exposure natural light related high levels cortisol lower levels melatonin night turn related depressive symptoms poor quality sleep
diverse family inositol lipids known central many aspects cell biology route first discovery inositol present day knowledge inositol lipids spans years long complex brief account important stages along route
diversity dynamics dominant bacterial communities arising pickling process bamboo shoots dendrocalamus latiflorus investigated nested polymerase chain reaction denaturing gradient gel electrophoresis combined quantitative real time polymerase chain reaction results showed several kinds halophilic bacteria early sampling time days pickling days lactococcus lactis significantly increased quantities copiesl became first dominant bacterium pickling days weissella bands appeared quickly became dominant day copiesl maturation progressed lactis decreased intensity whereas weissella increased intensity finally quantities weissella copiesl became higher lactis copiesl pickling days pickling process initiated lactis followed lactis weissella finally succeeded weissella
drug enforcement administration dea reports october cocaine seized united states contained levamisole equine conversion levamisole aminorex demonstrated however metabolic fate levamisole humans unknown nevertheless aminorex amphetamine like hallucinogenic may used adulterant increase effects cocaine report results vivo studies demonstrating first time equine also canine human metabolism result aminorex formation levamisole aminorex extracted real urine samples liquid liquid extraction identified quantified identification ions per substance lloq elsevier rights reserved
dynamics population undergoing selection central topic evolutionary biology question particularly intriguing case selective forces act opposing directions two population scales example fast replicating virus strain outcompetes slower replicating strains within host scale however fast replicating strain causes host morbidity less frequently transmitted outcompeted slower replicating strains host scale consider stochastic ball urn process models type phenomenon prove weak convergence process two natural scalings first scaling leads deterministic nonlinear integro partial differential equation interval dependence single parameter lambda show fixed points differential equation beta distributions stability depends lambda behavior initial data around second scaling leads measure valued fleming viot process infinite dimensional stochastic process frequently associated population genetics
energy dispersive ray fluorescence edxrf spectroscopy used determine essential trace element contents naturally grown wild type cereals collected different regions trabzon turkey samples quantitatively analyzed using standard addition method experimental set consisted detector multi channel analyzer radioactive source detector window energy resolution kev qualitative analysis spectral peaks showed samples contained chlorine potassium calcium titanium iron copper strontium yttrium tin barium results demonstrated cereals contain elements vital importance human metabolism
entire spectrum cultivated turmeric germplasm available today highly susceptible rhizome rot disease caused necrotrophic oomycete pythium aphanidermatum conventional host resistance breeding approaches successful crop owing lack genetic variability obligatory asexual nature stigmatic incompatibility present study sought develop easy rapid reliable molecular markers identify new turmeric germplasm could used source resistance aphanidermatum bulk segregant analyses using pooled dna resistant susceptible genotypes inter simple sequence markers resulted isolation putative resistance specific marker clrsm resistance specific fragment converted sequence tagged marker clsts could successfully amplify fragment resistance turmeric genotypes susceptible plants southern blotting confirmed single copy locus found associated resistant genotypes clsts marker precisely identified resistant five susceptible genotypes among turmeric germplasm unknown disease response collected different agroclimatic regions inoculation assessment individuals virulent strain aphanidermatum corroborated sts marker results hence identified sts marker use efficient tool early rapid identification new turmeric cultivars resistant rhizome rot marker assisted selection
enzymatic cleavage bonds beta diketones comparatively little studied biochemical process one important relevance human metabolism bioremediation preparative biocatalysis recent studies four types enzymes come light cleave bonds beta diketone functionality using different chemical mechanisms oph oxidized poly vinyl alcohol hydrolase pseudomonas strain vmc cleaves nonane dione butyrate pentan one serine triad hydrolase dke diketone cleaving enzyme acinetobacter johnsonii dioxygenase cleaving acetylacetone methylglyoxal acetate fumarylacetoacetate hydrolase cleaves fumarylacetoacetate fumarate acetoacetate using water molecule activated catalytic asp dyad aided calcium ion chelates enol acid form substrate indirectly positions water nucleophilic attack carbonyl group oxocamphor hydrolase cleaves nonenolizable cyclic beta diketones homologue crotonase superfamily employing catalytic asp dyad activate water molecule nucleophilic attack carbonyl group one prochiral face diketone substrate effecting desymmetrizations symmetrical substrates
epigenetics molecular biology human embryonic stem cells hes cells received much attention architecture present complete look hes cells electron microscopy special emphasis architecture nucleus propose ultrastructural signature pluripotent human cells hes cell nuclei lack heterochromatin including peripheral heterochromatin common somatic cell types absence peripheral heterochromatin may related absence lamins proteins important linking chromatin nuclear lamina envelope lamins expression development peripheral heterochromatin early steps development embryoid bodies hes cell nuclei abundant nuclear pores also abundance nuclear pores cytoplasm form annulate lamellae residue annulate lamellae germ cells early embryos hes cells derived subnuclear structures including nucleoli interchromatin granule clusters cajal bodies observed nuclear interior architectural organization human cell nuclei important implications cell structure gene expression relationships maintenance pluripotency wiley periodicals inc
mitochondria organizing network ermione saccharomyces cerevisiae involved maintaining mitochondrial morphology lipid homeostasis ermes micos two scaffolding complexes ermione contribute processes ermes ancient lost several lineages including animals plants sar stramenopiles alveolates rhizaria hand micos ancient remained present organisms bearing mitochondrial cristae ermione precursor evolved alpha proteobacterial ancestor mitochondria central subunit micos mic subsequent evolution ermione interactors eukaryotes reflects integrative evolution mitochondria hosts adaptive paths lineages followed specialization certain environments approaching ermione perspective comparative evolutionary cell biology hope shed light evolutionary history also ermione components may function organisms cerevisiae article part special issue entitled cellular lipid landscape edited tim levine anant menon elsevier rights reserved
establishment posttranslational chromatin modifications major mechanism regulating genomic dna utilized however current vitro chromatin assays monitor histone modifications individual nucleosomes describe strategy nucleosome acetylation sequencing allows read amount modification nucleosome approach bead bound trinucleosome substrate enzymatically acetylated radiolabeled acetyl coa saga complex saccharomyces cerevisae product digested restriction enzymes cut unique sites nucleosomes counted quantify extent acetylation nucleosomal site find sensitively specifically reproducibly follow enzyme mediated nucleosome acetylation applying strategy acetylation proceeds extensively distribution across nucleosomes relatively uniform however substrates used contain nucleosomes mutated major sites saga mediated acetylation studied initial rate conditions changes acetylation distribution observed nucleosome acetylation sequencing applicable analyzing wide range modifications additionally trinucleosomes synthesis strategy highly modular efficient used generate nucleosomal systems nucleosome composition differs across array elsevier inc rights reserved
eurasian black tern chlidonias niger niger nests marshes continuously distributed across eurasia migration routes staging sites non breeding distributions well understood western europe populations declined substantially several decades thus complete understanding breeding site connectivity migratory routes needed collected tissue samples terns breeding colonies netherlands latvia southern ukraine eastern siberian russia individuals one important post nuptial staging site netherlands microsatellite data suggest significant differentiation among breeding sites pattern supported differences among sites morphological measures conversely mitochondrial dna suggests similarity population expansion especially region around ukraine assigned birds sampled staging site netherlands latvia breeding population none southern ukrainian eastern russian population data indicated limited contact post nuptial staging sites contribute genetic structure among breeding sites species study demonstrates utility genetic data migration studies delineate migratory flyways highlight importance specific staging sites specific breeding subpopulations
existing european regulation prohibits use animals meals feedstuffs order prevent bovine spongiform encephalopathy infection diffusion however legislation rapidly moving towards partial lifting feed ban competent control organisms urged develop suitable analytical methods able avoid food safety incidents related animal origin products limitations official methods light microscopy polymerase chain reaction suggest exploring new analytic ways get reliable results short time combination spectroscopic techniques optical microscopy allows development individual particle method able meet selectivity sensitivity requirements spectroscopic method based fourier transform micro raman spectroscopy coupled discriminant analysis presented approach could useful situ applications customs inspections since drastically reduces time costs analysis published elsevier ltd
expression cytochrome cytochrome reductase cpr genes conterminous biotransformation corticosteroids pahs studied cunninghamella elegans previously used strain microbial eucaryotic model studying relationship mammalian steroid hydroxylation metabolization pahs reported cytochrome reductase involved biotransformaton cortexolone phenanthrene pcr northern blotting analyses indicated cytochrome cpr genes appear inducible steroids pahs expression cytochrome gene increased ninefold expression cpr gene increased fold cultures cortexolone phenanthrene comparison controls conclude increase cytochrome gene expression accompanied increase cytochrome enzymatic activity levels
extracellular environment vascular cells vivo complex chemical composition physical properties architecture consequently great challenge study vascular cell responses vitro either understand interaction native environment investigate interaction artificial structures implant surfaces new procedures techniques materials science fabricate bio scaffolds surfaces enabled novel studies vascular cell responses well defined controllable culture conditions advancements paving way deeper understanding vascular cell biology materials cell interaction review previous work focusing interaction vascular smooth muscle cells smcs endothelial cells ecs materials micro nanostructured surfaces summarize fabrication techniques surface topographies materials geometries biochemical functionalization mechanical properties materials furthermore various studies vascular cell behavior biological responses micro nanostructured surfaces reviewed emphasis given studies cell morphology motility cell proliferation cytoskeleton cell matrix adhesions signal transduction pathways vascular cells finalize short outlook potential interesting future studies
ferric uptake regulator fur iron dependent transcriptional regulator regulates genes related iron acquisition oxidative stress response various functions transcription fur typically self regulating sensitive iron oxidative stress following identification fur gene genome bovine pathogen mannheimia haemolytica attempt made characterize transcriptional control haemolytica fur northern blotting pcr primer extension done determine haemolytica fur transcribed using three distinct promoters two located within upstream flda gene third promoter located upstream conserved hypothetical protein drives transcription tricistronic message quantitative real time pcr experiments indicated unlike current models fur regulation haemolytica fur transcription unchanged iron depletion logarithmic phase repressed iron depletion stationary phase elsevier rights reserved
first full length mrna vitellogenin ticks sequenced also represents first complete sequence chelicerata heme binding cdna american dog tick dermacentor variabilis length genbank accession number coded protein calculated molecular weight protein signal sequence single rxxr cleavage signal would generate two subunits molecular weight lipoprotein terminal carboxy von willebrand factor type domains tryptic digest analysis vitellin protein confirmed function cdna tick yolk protein apparently vitellin variabilis oligomeric possibly dimeric comprised mixture uncleaved monomer subunits predicted single rxxr cleavage signal highly conserved icg motif close terminus insect genes different tick message glcs variant also present partial sequence boophilus microplus phylogenic analysis showed full length cdna variabilis partial cdna microplus distinct insects crustacea message found whole body rna unfed fed males unfed partially fed virgin females determined northern blotting message found replete mated pre ovipositional females increased higher levels ovipositing females absent egg laying complete endocrine regulation mrna discussed tissue sources message gut fat body tryptic digest fingerprinting suggests second mrna might present american dog tick needs study elsevier ltd rights reserved
fourier transform infrared ftir spectrum polyethylene terephthalate pet fibers extracted vascular prostheses used illustrate mechanisms structure degradation quantitative model fitting infrared spectra pet samples region evaluated examination series spectrum pet vascular prostheses collected aging showed significant chemical differences comparison virgin prosthesis analysis spectrums showed increase end group concentrations explants used complementary technique chemical titration method order validate ftir results considerable loss macromolecular weight observed related formation smaller molecules may proceed random scission even time clearly influences level degradation results highlight mechanisms degradation probably related human metabolism
gene product zinc finger ccch type containing zch gene immediate early erythropoietin response gene synonymous lerepo characterized zch expressed ubiquitously human tissues tested northern blotting showed mainly diffuse cytoplasmic distribution immune fluorescence microscopy western blotting subcellular protein fractions expression zch downregulated effectively hela cells control transfection specific small interfering rna sirna subsequent affymetrix microarray analysis revealed differentially expressed genes including induced fold genes suppressed fold genes gene ontology categories containing representation differentially expressed genes comprised cell growth transcription cell adhesion regulation kappa regulation mapk cell cycle arrest immune response zch interacted signaling adapter protein tumor necrosis factor receptor associated factor traf shown immunoprecipitation zch expression found significantly increased acute myeloid leukemia aml samples compared mds cml normal bone marrow samples using leukemia gene atlas lga database based data hypothesized zch may interact traf functionally within kappa pathway may explored potential target aml
genetic structure european mudminnow populations throughout species range examined using mitochondrial dna seven microsatellite loci ten mitochondrial haplotypes detected suggesting three phylogeographic lineages likely diverged early middle pleistocene three lineages geographically correspond three regions danube drainage including drava system dniester delta sava system tisza system high genetic diversity observed using mtdna confirmed microsatellite data suggesting existence populations studied area isolation migration model showed migration rates populations generally low highest drava tributary mura according inferred relative population splitting times umbra krameri likely spread eastern part species range west also showed highest genetic diversity largest population size reported time calibrated phylogeny separation european american umbra occurred roughly end late cretaceous first half paleogene highest probability density taking results account appropriate guidelines proposed conserve european mudminnow populations
halogenases group enzymes come fore last years thanks discovery characterization several novel representatives revealed fascinating variety distinct chemical mechanisms nature utilizes activate halogens introduce organic substrates computational studies using range approaches already elucidated many details mechanisms enzymes often synergistic combination experiment review summarizes main insights gained studies also seeks identify open questions amenable computational investigations studies discussed herein serve illustrate limitations current computational approaches challenges encountered computational mechanistic enzymology
human gastrointestinal tract harbors trillions bacteria commensal adapted time milieu human colon many metabolic interactions human host influence human nutrition metabolism diverse ways understanding influences come breakthroughs molecular profiling phylogeny metabolic capacities microbiota gut microbiota produce variety nutrients including short chain fatty acids vitamins vitamin ability interact receptors epithelial cells subepithelial cells microbiota also release number cellular factors influence human metabolism thus potential roles pathogenesis metabolic syndrome diabetes non alcoholic fatty liver disease cognition extend well beyond traditional contribution nutrition review explores roles gut microbiota human nutrition metabolism putative mechanisms underlying effects
human gene deleted malignant brain tumors dmbt considered play role tumorigenesis pathogen defense encodes protein multiple scavenger receptor cysteine rich srcr domains involved recognition binding broad spectrum bacterial pathogens srcr domains encoded highly homologous repetitive exons whose number humans may vary due genetic polymorphism characterized porcine dmbti gene mrna genomic level assembled porcine dmbt cdna sequence pcr amplified seminal vesicle rna porcine dmbt cdna contains open reading frame transcript gives rise putative polypeptide amino acids calculated mass kda compared human dmbt contains four terminal srcr domains northern blotting revealed transcripts similar size tissues analyzed analysis ests suggested existence secreted transmembrane variants porcine dmbt gene spans chromosome contrast characterized cdna genomic bac clone contained exons coding terminal srcr domains different mammalian dmbt orthologs large interspecific differences number srcr exons utilization transmembrane exon exist data suggest porcine dmbt gene may share human dmbt gene additional intraspecific variations number srcr coding exons elsevier rights reserved
importance autophagy cardiovascular physiology cardiovascular disease increasingly recognized however precise biological effects underlying mechanisms autophagy cardiovascular system still poorly understood last years effects autophagy endothelial cells attracted great interests article provides summary current knowledge regulatory factors signalling mechanisms functional outcomes autophagy endothelial cells suggested situations induction autophagic response cytoprotective effects beneficial effects autophagy endothelial cells likely context dependent since autophagy may also contribute cell death certain circumstances addition regulating endothelial cell survival death autophagy also involved modulating important functions nitric oxide production angiogenesis haemostasis thrombosis mounting data help draw clear picture roles autophagy endothelial cell biology dysfunction given pivotal role endothelial dysfunction pathogenesis vascular disease disruptions autophagy endothelial cells likely significant contributions supported preliminary vivo data indicating compromised autophagic functions may important development endothelial dysfunctions associated diabetes ageing
initiation elongation termination dna replication associated distinct nonlinear dna structures resolved identified two dimensional agarose gel electrophoresis method involves isolation genomic dna preserving fragile replication structures digestion dna restriction enzyme separation dna size shape two distinct stages agarose gel electrophoresis southern blotting probe specific sequence interest method commonly used determine activity level putative replication origin containing sequences also used analyze replication timing fork progression fork pausing fork stalling collapse termination recombinational repair
introduction sensitive techniques luminexa hla antibody screening patients awaiting organ transplantation resulted better understanding transplantation immunology improvements clinical practice interpretation results obtained luminexa lead inaccurate evaluation patient antibody status unjustified rejection potential organ donor aim study demonstrate benefits performing hla antibody screening sera patients waiting list organ transplantation two different assays complement dependent cytotoxicity cdc luminexa retrospective analysis performed pretransplant serum samples patients kidney transplantation waiting list rijeka tested march march samples tested parallel cdc assay luminexa based assay samples tested tested negative hla antibodies positive assays samples discordant results cdc negative luminexa positive cdc positive luminexa negative among luminex positive patients seven experience immunizing events evaluation hla antibody status patients waiting list organ transplantation based results cdc luminexa sensitive assays accordance information patient clinical status exposure immunizing events
investigation antimicrobial mechanisms challenging crucial issue fields food clinical microbiology constitutes prerequisite development new antimicrobial processes compounds well anticipate phenomenon microbial resistance nowadays accepted cells population exposed stress cause appearance different cell populations particular sub lethally compromised cells could defined viable non culturable vbnc recent advances flow cytometry fcm especially multi parameter flow cytometry fcm provide opportunity obtain high speed information real time damage single cell level review gathers fcm methodologies based individual simultaneous staining microbial cells employed investigate physiological state following different physical chemical antimicrobial treatments special attention paid recent studies exploiting possibility corroborate fcm results additional techniques plate counting microscopy spectroscopy molecular biology techniques membrane modeling order elucidate antimicrobial mechanism action given antimicrobial treatment compound combination fcm methodologies additional methods namely promising increasingly used approach give insight differences microbial sub population evolutions response antimicrobial treatments
involvement mitochondrial content structure function well mitochondrial genome mtdna cell biology participating main processes occurring cells topic intense interest many years specifically progressive accumulation variations mtdna post mitotic tissues represents major contributing factor physiological pathological phenotypes recently epigenetic overlay mtdna genetics emerging demonstrated implication mitochondrial genome regulation intracellular epigenetic landscape object epigenetic modifications indeed vitro population studies strongly suggest similarly nuclear dna also mtdna subject methylation hydroxymethylation follows mitochondrial nucleus cross talk mitochondrial retrograde signaling cellular properties require concerted functional cooperation genetic epigenetic changes present paper aims review current advances mitochondrial epigenetics studies increasing indication mtdna methylation status attractive biomarker peculiar pathological phenotypes environmental exposure
issue novelty seeking traits related important economic attitudes risk taking entrepreneurial explorative behaviors foster technological progress thus economic development however numerous molecular genetic studies shown novelty seeking bearing individuals prone certain psychological disadvantages attention deficit hyperactivity disorder adhd leading occupational educational difficulties modern societies using recent compilation drd exon iii allele frequencies particular gene variant population geneticists found sometimes associated human phenotype novelty seeking behavior paper advances new country level measure prevalence novelty seeking traits large number countries worldwide results suggest stable non monotonic inverted shaped relationship country level drd exon iii allele frequency measure economic development finding suggestive potential benefits costs novelty seeking traits aggregate economy
last decade brought unexpected rise oropharyngeal squamous cell carcinoma opscc primarily white males ages years limited exposure alcohol tobacco subset squamous cell carcinoma scc found associated human papillomavirus infection hpv head neck squamous cell carcinoma hnscc subtypes include oral cavity hypopharyngeal nasopharyngeal laryngeal scc tend hpv negative hpv associated oropharyngeal cancer proven differ alcohol tobacco associated oropharyngeal carcinoma regards molecular pathophysiology presentation epidemiology prognosis improved response chemoradiation therapy given improved survival patients hpv associated scc efforts intensify treatment decrease treatment related morbidity forefront clinical research review focus important differences hpv tobacco related oropharyngeal cancer review molecular pathogenesis hpv related oropharyngeal cancer emphasis new paradigms screening treating disease published elsevier
latest probable scenario vaccination strategies prime one live attenuated vaccine candidate followed boost dose second vaccine candidate present study primed mice recombinant bacille calmette guerin bcg comprising agb esat followed boost doses agb esat agb esat fusion protein dda adjuvant separately boost doses weeks levels antigen stimulated cells secreting interferon ifn gamma content ifn gamma tumor necrosis factor interleukin splenocytes vitro culture supernatant antigen specific immunoglobulin titer mouse serum igg subclass population antigen specific cells detected present study showed recombinant bcg along boost doses agb esat individually induce efficient helper type immune response hand recombinant bcg boost doses agb esat fusion protein enhanced longer lasting predominant thl immune response result suggested agb might synergize esat protein order produce better well effective immune response thus present study concluded recombinant bcg boost doses agb esat fusion protein could good strategy improve immune protective efficacy
left ventricular hypertrophy lvh one important organ damage targets hypertension despite involvement multiple factors genetic factors shown important function pathogenesis lvh aim study evaluate role mitochondria lvh chinese hypertensives systematic extended mutational screening mitochondrial genome initiated large cohort chinese population geriatric cardiology clinic chinese pla general hospital beijing china specific mutations within mitochondria evaluated changes total rnas trnas measured northern blotting using nonradioactive digoxigenin dig labeled oligodeoxynucleotides specific rna rates oxygen consumption intact cells determined ysi oxygraph sequence analysis mitochondrial dna one chinese pedigree identified novel transition position junction trna met trna gln noncoding region mutation appeared affect processing precursors mitochondrial trnas reduction rate respiration marked decreases steady state levels trna met trna gln detected cells carrying mutation novel mutation absent chinese control patients conclusion noncoding mitochondrial sequence alteration alters mitochondrial function implicating mutation pathogenesis lvh chinese hypertensives
lymph node important immune system number antigen presenting cells present induce rapid immune responses foreign antigens great number macrophages exist lymph nodes recent studies using animal models shown lymph node sinus macrophages associated induction anti tumor immunity playing significant role host immune responses tumor cells colorectal tumor malignant melanoma endometrial tumor shown high density positive macrophages sinus predictive factor better clinical prognosis observations density positive macrophages sinus positively associated density infiltrating cells tumor tissues indicates significance positive macrophages anti tumor immune reactions tumor patients moreover antigen delivery targeting macrophages also considered promising approach vaccination article summarized significance positive macrophages anti tumor immunity
main purpose study investigate application modified chitosan potential vector gene delivery gonadotropin releasing hormone receptor gnrhr expressing cells design gene carrier could useful particular gene therapy cancers related reproductive system gene disorders sexual development contraception fertility control study decapeptide gnrh successfully conjugated chitosan confirmed proton nuclear magnetic resonance spectroscopy nmr attenuated total reflectance fourier transform infrared spectroscopy atr ftir synthesized gnrh conjugated chitosan gnrh able condense dna form positively charged nanoparticles specifically deliver plasmid dna targeted cells two dimensional three dimensional cell cultures systems importantly gnrh exhibited higher transfection activity compared unmodified conclusion gnrh conjugated chitosan promising carrier targeted dna delivery gnrhr expressing cells elsevier ltd rights reserved
mammalian target rapamycin mtor recently implicated leukaemic cell growth tumour associated angiogenesis expression vascular endothelial growth factor vegf examined whether mtor plays role regulator growth vegf expression acute myeloid leukaemia aml three mtor targeting drugs rapamycin everolimus rad cci applied effects drugs growth survival apoptosis vegf expression primary aml cells various aml cell lines examined growth aml cells aml derived cell lines assessed thymidine incorporation survival examined light electron microscopy tunel assay annexinv staining expression vegf northern blotting pcr elisa rapamycin found counteract growth aml cell lines kga well primary aml cells patients examined effects rapamycin derivatives dose dependent also found exposure mtor targeting drugs resulted apoptosis decreased expression vegf leukaemic cells mtor targeting drugs exert antileukaemic effects aml cells vitro multiple actions including direct inhibition proliferation induction apoptosis suppression vegf based study studies mtor regarded potential drug target aml
management helicobacter pylori pylori infection treatment differs common treatment protocol infectious diseases culture molecular guided approaches face several practical issues invasive procedures required obtain gastric biopsy specimens lack availability routine laboratory testing places pylori treatment includes administration two three empirically selected antibiotics combined proton pump inhibitor rather evidence based eradication treatment efficacy empirical therapy decreasing mostly due increasing multiple resistance multiresistance levofloxacin clarithromycin metronidazole commonly used empirical treatments appears increased many countries mutations play primary role antimicrobial resistance pylori many different mechanisms involved development antibiotic resistance determining understanding possible mechanisms might allow development new methods detection pylori determination antimicrobial resistance treatment based detection antimicrobial resistance usually effective empirical treatment nevertheless approach treatment still recommended maastricht guidelines due difficulty associated routine application available culture molecular based susceptibility tests usually administered cases treatment failure management first rescue treatments requires research due steadily increase antimicrobial resistance
mechanisms underlying hepatitis virus hcv resistance interferon alpha ifn alpha fully understood used ifn alpha resistant hcv replicon cell lines infectious hcv cell culture system elucidate mechanisms ifn alpha resistance cell culture ifn alpha resistance mechanism replicon cells addressed complementation study utilized full length plasmid clones ifn alpha receptor ifnar ifn alpha receptor ifnar jak tyk stat stat isre luciferase reporter plasmid demonstrated expression full length ifnar clone alone restored defective jak stat signaling well stat stat stat phosphorylation nuclear translocation antiviral response hcv ifn alpha resistant cell lines used study moreover pcr southern blotting dna sequence analysis revealed cells series ifn alpha resistant cells amino acid deletions extracellular sub domain ifnar addition cells series amino acids deletion sub domain ifnar protein leading impaired activation tyk kinase using infectious hcv cell culture model show viral replication infected huh cells relatively resistant exogenous ifn alpha hcv infection induces defective jak stat signaling impairs stat stat phosphorylation regulation cell surface expression ifnar endoplasmic reticulum stress mechanisms results study suggest expression cell surface ifnar critical response hcv exogenous ifn alpha
microbial populations activated sludge two polish wastewater treatment plants wwtps identified quantified using illumina sequencing ribosomal rna amplicons year period dynamics time compared danish wwtps data collected previous studies center microbial communities aalborg university bacterial communities polish danish wwtps similar microbial diversity polish wwtps lower dominant genera polish wwtps abundant danish wwtps constituted half activated sludge community polish wwtps showed higher abundance bacteria involved nitrogen chemical oxygen demand removal proteobacteria bacteroidetes polyphosphate acculumating bacteria dominant bacterial group danish plants microbial community structures examined polish wwtps relatively similar showed strong seasonal variations normally observed danish wwtps
molecular mechanisms endogenous circadian clocks allow animals adapt environmental cycles recently uncovered draft genome ascidian ciona intestinalis model animal close vertebrates described however intestinalis genome lacks canonical clock genes per bmal clock shared vertebrates insects found circadian rhythms physiological molecular levels oxygen consumption rate lower light phase higher dark phase day rhythm highly damped continued constant darkness microarray analysis spots total corresponding clones extracted candidates circadian expression confirmed circadian expression several candidate genes northern blotting furthermore three four rhythmic expressed genes showed phase shifts prolonged light period however known clock genes oscillate data suggest intestinalis unique molecular circadian clock daily environmental change strong effect sea squirt evolution compared vertebrates insects
morbidity mortality heart failure preserved left ventricular ejection fraction hfpef similar systolic heart failure pathogenesis hfpef remains poorly understood demonstrated systolic heart failure microrna mir could inhibit apoptosis cardiac fibroblasts leading cardiac hypertrophy myocardial fibrosis role mir hfpef remains unknown employing cell culture technique rat myocardiocytes cardiac fibroblasts obtained expression mir two cell types different conditions compared found mir expression significantly higher cardiac fibroblasts myocardiocytes established rat hfpef model harvested tissues cardiac apex pathological examination northern blotting forth found mir expression significantly higher model rats sham operated rats model rats developed cardiac atrophy cardiac fibrosis injection mir antagonist cardiac atrophy cardiac fibrosis conspicuously ameliorated vivo vitro inhibition mir expression resulted reduced bcl expression expression mir led elevation bcl expression study suggested mir promoted development hfpef regulating expression anti apoptotic gene bcl thereby suppressing apoptosis cardiac fibrosis
morpho anatomy reproductive tract germ cells useful establish phylogenetic relationships many insects however elements remain little known coleoptera passalidae male reproductive tract spermatogenesis sperm structure described south american spasalus silvarum kuwert passalinae passalini subsocial species living decaying bark beetle two fusiform follicles testicle central intrafollicular efferent duct divided septa organization cysts different known insects cyst contains filiform spermatozoa relatively small nuclei length relation length flagellum among passalids general conformation male reproductive tract similar described american species differs african ones terms number shape testicular follicles data provided spermatozoa maturation process contribute understanding reproductive cell biology passalidae
mrna differential display technique used identify genes habanero pepper capsicum chinense jacq seedlings whose expression modified systemically infection oomycete phytophthora capsici experiments different oligonucleotide primer combinations revealed single gene synthesised nova instead quantitative accumulation multiple transcripts found transcripts levels nitrate reductase capsicum chinense nitrate reductase ccnr high percentage identity solanaceae nrs showed consistent increase hours inoculation hai capsici reverse northern blotting revealed existence basal levels ccnr transcripts different adult tissues however systemic levels rose dramatically spraying seedlings salicylic acid ethephon methyl jasmonate meja capsici defence phytohormones also modified enzymatic activity nitrite nad oxidoreductase similar kinetics application induced activated ccnr differentially possible activity ccnr related specific host defence response elsevier masson sas rights reserved
opioid receptor mor plays mandatory role action opioid drugs morphine fentanyl heroin revealed deficiency mor gene oprm difference noncoding region gene markedly affects sensitivity mice opioids noncoding region human oprm gene yet characterized present study conducted rapid amplification cdna ends race pcr identified end human mor mrna abundant transcript among oprm gene transcripts poly signal located nucleotides downstream stop codon oprm gene reverse transcription pcr analyses showed region stop codon poly signal transcribed utr identified rich regions putative transcription factor binding sites furthermore compared noncoding regions human mouse oprm oprm genes found apparent homology northern blotting mouse brain mrnas size band detected probe mor coding region probe mouse genome region corresponding human mor utr since utrs affect gene expression present characterization noncoding region human oprm gene lead better understanding mechanisms underlying oprm gene regulation individual differences sensitivity opioids published elsevier
natural variation environmental factors freshwater basins determines biodiversity among calcium key physiological compound freshwater invertebrates required shell formation muscle contraction mediates gene expression allows counteracting acidosis stress periods among functions although distribution different freshwater species suggested linked environmental calcium concentration yet research studies confirmed identifying whether environmental calcium concentrations might determine invasion success alien species would critical developing implementing effective management strategies control multidisciplinary approach integrating field surveys analytical chemistry techniques molecular biology analyses lab scale experiment taken decipher whether environmental calcium concentration might hamper establishment corbicula fluminea northwestern iberian rivers principal component analysis water chemistry variables water bodies identified environmental calcium concentration among others one key factor best characterized distribution area fluminea calcium content animals bodies two representative rivers dependent environmental calcium concentration freshwater basins lower concentration lower body content expression stress calcium homeostasis related genes higher fluminea low calcium concentration environments calcium rich freshwater basins finally experimental conditions lower water calcium concentrations decreased fluminea growth rates present data suggest first time environmental calcium concentration may act determinant factor invasion success fluminea freshwater environments results provide new clues identification basins increased risk potential invasion fluminea based environmental calcium levels elsevier rights reserved
objective present study characterize pattern gene expression last stage ovarian maturation chlamys farreri dynamic transcriptomic analysis ovaries performed four time points prior ovulation using illumina hiseq platform total unigenes obtained among annotated according bioinformatics databases swiss prot kog kegg results transcriptome analysis revealed time dependent pattern global transcriptional responses compared library differently expressed genes degs obtained libraries respectively three libraries shared degs majority time specific pairwise comparisons profile demonstrated degs related hormone metabolism receptors cell division gametogenesis vitellogenesis pathways notably adjacent sampling time point groups compared deg throughout experimental period related protein coupled receptor signaling pathway present study provides first dynamic transcriptomic analysis farreri evaluation molecular basis gonadal maturation elsevier inc rights reserved
objective study determine global gene expression relation vestibular schwannomas growth rate identify signal transduction pathways functional molecular networks associated growth repeated magnetic resonance imaging mri prior surgery determined tumor growth rate following tissue sampling surgery mrna extracted sporadic double stranded cdna synthesized mrna used template vitro transcription reaction synthesize biotin labeled antisense crna hybridized affymetrix arrays analyzed dchip software differential gene expression defined fold difference fast slow growing tumors ccm year employing value deregulated transcripts matched established gene ontology ingenuity pathway analysis used identification signal transduction pathways functional molecular networks associated tumor growth total genes deregulated relation tumor growth rate genes associated apoptosis growth cell proliferation deregulated gene ontology included regulation cell cycle cell differentiation proliferation among functions fourteen pathways associated tumor growth five functional molecular networks generated first study global gene expression relation vestibular schwannoma growth rate identified several genes signal transduction pathways functional networks associated tumor progression specific genes involved apoptosis cell growth proliferation deregulated fast growing tumors fourteen pathways associated tumor growth generated functional networks underlined importance pik family among others
parasitic protozoan trypanosoma cruzi causative agent chagas disease widely distributed throughout americas southern united states northern argentina infects least million people endemic areas much remains unknown dynamics cruzi transmission among mammals triatomine vectors sylvatic peridomestic eco epidemiological cycles well risk transmission humans identification cruzi dtus among locally acquired cases necessary enhancing diagnostic clinical prognostic capacities well understand parasite transmission cycles blood samples cohort confirmed locally acquired chagas disease patients texas used genotyping cruzi conventional pcr using primers specific minicircle variable region kinetoplastid dna kdna highly repetitive genomic satellite dna satdna confirmed presence cruzi patients genotyping based amplification intergenic region miniexon gene cruzi sequencing sequences analyzed blast phylogenetic analysis maximum likelihood method allowed identification non tci dtus infection six patients corresponded dtus tcii tcv tcvi tciii tciv two six patients also infected tci dtu indicating mixed infections individuals electrocardiographic abnormalities seen among patients single non tci mixed infections non tci tci dtus results indicate greater diversity cruzi dtus circulating among autochthonous human chagas disease cases southern including first time dtus tcii tcv tcvi group furthermore dtus infecting human patients capable causing chagasic cardiac disease highlighting importance parasite detection population elsevier rights reserved
partition function fundamental concept equilibrium thermodynamics encodes particle distribution different energy levels within thermal system modifying partition function particle partition function protein conformational state obtained according protein thermodynamic structure theory protein conformational state represents one thermal system within protein partition function encodes thermodynamic relation among different conformational states protein many experimental observations models enzymology biochemistry molecular biology summarized reexamined applying concept paper discusses following partition function protein conformational state conformation distribution two states protein conformation distribution along temperature gradient protein conformation stability curve agonist efficiency conformational distribution receptor along voltage enzyme active conformation distribution along temperature gradient enzyme active conformation distribution respect protein flexibility revision arrhenius equation enzymatic reactions biophysical nature conformational equilibrium deformation
patella sesamoid bone located major extensor tendon knee joint hindlimb many tetrapods although numerous aspects knee morphology ancient conserved among tetrapods evolutionary occurrence ossified patella highly variable among extant crown clade groups found birds lizards monotreme mammals almost placental mammals absent marsupial mammals well many reptiles integrate data literature first hand studies fossil recent skeletal remains reconstruct evolution mammalian patella infer bony patellae likely evolved four six times crown group mammalia monotremes extinct multituberculates one stem mammal genera outside therian eutherian mammals three times therian mammals furthermore ossified patella lost several times mammals including absent hindlimbs marsupials acquisition least bats inferences patellar evolution mammals reciprocally informed existence several human genetic conditions patella either absent severely reduced clearly development patella close genomic control although responsiveness mechanical environment also important perhaps variable among taxa bony patella present plays important role hindlimb function especially resisting gravity providing enhanced lever system knee joint yet evolutionary origins persistence modifications patella diverse groups widely varying habits habitats digging running aquatic small large body sizes bipeds quadrupeds remain complex perplexing impeding conclusive synthesis form function development genetics across mammalian evolution meta analysis takes initial step toward synthesis collating available data elucidating areas promising future inquiry
pharmaceutical industry committed market safer drugs fewer side effects predictable pharmacokinetic properties quantifiable drug drug interactions increasing need develop robust enhanced throughput vitro assays accurately extrapolate humans major drug metabolizing human hepatic cytochrome cyps cypa coexpressed functionally escherichia coli human nadph cytochrome reductase validated surrogates counterparts human liver microsomes hlm respect kinetic inhibition properties using recombinant enzymes fully automated vitro assays assess cyp inhibition determine enzymology drug oxidation developed validated values determined series test compounds hlm recombinant cyps similar good correlation sum individual cyp intrinsic clearance int hlm int ten prototypic substrates clearance cyp dependent several vitro incubation milieu cyps hlm human hepatocytes routinely used level non specific binding investigated respect effects determinations clear correlations binding lipophilicity logd selection bases acids may allow prediction property laboratory shown recombinant enzymes suitable frontline predictive human metabolism studies early drug discovery
pharmacogenomics personalized medicine group belongs laboratory molecular biology immunology department pharmacy active since mainly field pharmacogenomics personalized medicine herein describe research interests collaborations accomplishments pharmacogenomics personalized medicine group together teaching activities group greatly enhance pharmacogenomics knowledge graduate postgraduate students healthcare professionals
plasmacytoma variant translocation gene pvt large non coding locus adjacent myc long non coding rna pvt recognized cancerous gene amplified myc various cancers expression functional role pvt colorectal cancer still unelucidated addition reported long non coding rnas far discovered either cells tissues research long non coding rnas detection extracellular vesicles reported yet present study firstly investigated expression pvt colorectal cancer specimens correlation expression myc related genes real time polymerase chain reaction isolated extracellular vesicles colorectal cancer cells culturing medium differential centrifugation detected pvt expression extracellular vesicles using real time polymerase chain reaction pvt targeting sirna transfected cells dimethylthiazol carboxymethoxyphenyl sulfophenyl tetrazolium assay flow cytometry used evaluate cell proliferation apoptosis results showed pvt expression tumor tissues higher normal tissues significantly correlated expression myc three myc regulating genes fubp ezh npm also correlated expression two pvt associated transcript factors nuclear factor kappa myocyte specific enhancer factor reported first time pvt long non coding rna successfully detected extracellular vesicles excluded cells expression level pvt higher extracellular vesicles aggressive cell results also showed regulating pvt expression myc expression suppressed cell proliferation inhibited cell apoptosis increased taken together findings implicated pvt may new oncogene amplified myc colorectal cancer tissues extracellular vesicles functionally correlated proliferation apoptosis colorectal cancer cells
potato upreg encodes mutated adp glucose pyrophosphorylase agpase large subunit introduced rice evaluate potential enhance sink driven yield productivity crop also wished elucidate activities regulated allosteric variants potato agpase large subunit gene rice dna vector containing upreg gene control rice glutelin promoter constructed mar sequence transformed rice using agrobacterium mediated transformation transgenic plants selected medium supplemented phosphinothricin confirmed application herbicide total transgenic plants subsequently obtained integration upreg rice genome confirmed southern blotting exogenous agpase transgenic rice plants showed high affinity phosphoglycerate activator low affinity orthophosphate inhibitor observed lettuce transgenic rice also showed increases number grains per particle number panicles per plant also fresh weight ground mass plant higher non transgenic nak dong number seeds per tiller also found higher transgenic plants however net photosynthesis rate showed little difference transgenic rice could therefore confirm linkage deregulation allosteric effects based results upreg mutant genes used genetic improvement plant agpases potato effectively increase crop yield productivity
potency conventional antivenom conjugated soy protein nanoparticles nps compared free neutralizing systemic toxicity naja naja venom effective dose neutralize venom induced toxicity mice found respectively histopathological examination heart liver kidney indicated systemic toxicity induced venom effectively neutralized lower concentrations compared addition found effective neutralizing edema forming activity naja venom compared thus results study indicate potency commercially available could improved conjugating soy protein nps international union biochemistry molecular biology inc volume number pages
power saccharomyces cerevisiae experimental organism derives genetic tractability mutant variants isolated constructed phenotypically characterized relative ease addition ability recover characterize four products meiosis haploid spores tetrad ascus greatly facilitates determining allelic composition variants measuring linkage relationships alleles constructing new allele combinations analysis genetic interactions saccharomyces cerevisiae also preeminent model organism study meiotic recombination analysis tetrads analysis populations single spores often called random spore analysis direct monitoring recombination dna level chapter contains methods tetrad dissection random spore preparation preparing dna molecular analysis liquid cultures undergoing synchronous meiosis
present study aimed investigate effect dickkopf related protein dkk osteogenic differentiation rat dental follicle cells decs pcr array analysis wnt pathway activation decs identified genes dysregulated mineral induction among dkkexpression levels decreased experiments conducted investigate role dec osteogenesis comparing decs grown normal growth mineral induction media weeks present study confirmed dkk potential target gene osteogenesis reverse transcliption quantitative polymerase chain reaction gpcr western blotting short hairpin rna shrna introduced decs using lentiviral vector inhibit dkk expression alkaline phosphatase alp activity assay alizarin red staining performed observe dkk shrna decs addition osteogenic differentiation dkk shrna decs analyzed gpcr vivo dkk shrna decs seeded hydroxyapatiteip tricalcium phosphate tcp scaffolds transplanted subcutaneous tissue mice severe combined immunodeficiency followed hematoxylin eosin masson staining results confirmed dkk expression downregulated mineral induction rat decs lentivirus mediated expression dkk shrna decs promoted calcified nodule formation alp activity expression catenin runt related transcription factor osteocalcin compared control cells vivo implanted section presented majority newly formed osteoid matrices collagen limited space tcp scaffolds matrices conclusion dkk expression negatively regulates osteogenic differentiation decs conversely downregulation dkk may enhance dec osteogenesis
present study examines molecular mechanism underlying vitro induced resistance flc fluconazole ktc ketaonazole mcz miconazole chx cycloheximide azole susceptible strains candicia albicans exposed cacdr cacdr inducers like fpz fluphenazine steroids prg progesterone beta est beta oestradiol employing spot checkerboard titre assays provide evidence vitro induced antagonism tested drugs inducers accompanied concomitant increase cacdr cacdr transcript levels notably unlike isolates parental wild type delta cdr null strains delta cdrl well delta cdr delta cdr nulls challenged inducers could display antagonism results validated northern blotting reporter gene transcription tro transcription run assays show vitro induced antagonism tested drugs inducer isolates mainly due transient reversible transcriptional activation cacdr notwithstanding earlier observation consistent high transcript levels cacdr clinical azole resistant isolates maintained due combination transcriptional activation enhanced mrna stability via elongated poly tails study shows transient reversible transcriptional activation cacdr major determinant induced antagonism isolates distinct strategies sustained isolates transiently induced resistance mechanisms isolates adopted candida become useful improving therapeutic approaches
present study focuses cryptosporidium infections foals brazil total animals different breeds farms vicinity aracatuba state sao paulo examined according pcr targeting rrna gene cryptosporidium dna detected foals good quality rrna actin hsp genes npcr amplicons obtained five fecal samples pcr amplification sequencing fragment sporozoite surface glycoprotein gene revealed parvum genotypes iiaalgr liaalgr interestingly also detected two foals genotype related human parasite hominis elsevier rights reserved
present study investigated ubiquitin specific peptidase usp gene knockdown smmc cells vitro vivo role usp regulating growth hepatocellular carcinoma hcc two small interfering rnas sirna constructed targeted usp gene control sequences synthesized inserted pgcsil gfp lentiviral vector full length usp cdna amplified polymerase chain reaction pcr cloned pegfp recombinant plasmids transfected cells knockdown efficiency upregulation usp determined reverse transcription quantitative pcr western blotting impact usp growth smmc cells vitro examined using mtt assay colony formation flow cytometry fcm immunohistochemical staining impact usp growth smmc cells vivo examined assessing tumorigenicity nude mice western blotting performed examine mechanism usp regulation smmc cell growth recombinant vectors containing specific scrambled usp sirna sequences constructed transfected smmc cells usp knockdown inhibited cell proliferation colony formation smmc cells upregulation usp promoted growth tumor cells fcm indicated usp knockdown led arrest induced apoptosis smmc cells usp knockdown inhibited xenograft tumor growth nude mice led downregulation transcription factor forkhead box foxm gene expression foxm targets including polo like kinase cyclin centromere protein also decreased following usp knockdown results suggest knockdown usp inhibits growth hcc vitro vivo potentially induction arrest regulating pre mrna splicing foxm
prophenoloxidase propo activating system crustaceans arthropods regarded constituent immune system plays important role defense pathogens hitherto crustaceans one propo gene per species identified report identification novel propo lvpropo hemocytes litopenaeus vannamei shows identity propo lvpropo cloned previously northern blotting analysis quantitative real time pcr reveal lvpropo mainly expressed hemocytes expression regulated shrimp challenged white spot syndrome virus wssv western blotting analysis shows lvpropo lvpo vannamei phenoloxidase exists hemocytes plasma vannamei lvpropo lvpo could detected hemocyte surface nucleus hemocytes indirect immunofluorescence assay ifa findings provide insight molecular biological basis studying defense mechanism shrimp innate immunity especially propo activating system melanization cascade shrimp elsevier ltd rights reserved
purification partial enzymology characteristics polyphenol oxidase lonicera japonica ljppo studied paper crude enzyme solution purified turn ammonium sulfate dialysis deae cellulose ion exchange chromatography preliminary treatments purification resulted fold enrichment molecular weight estimated similar kda exhibited sodium dodecyl sulfate polyacrylamide gel electrophoresis sds page optimal conditions ljppo temperature degrees addition inhibitive effects inhibitors enhanced positively increasing concentration moreover crude enzyme solution showed diphenolase activity toward catechol dopa chlorogenic acid rather monophenolase tri phenolase activity best substrate catechol highest max value however oxidation diphenol related browning significantly data obtained research provided theoretical basis prevention enzymatic browning japonica processing elsevier ltd rights reserved
purpose paper occasion anniversary new york botanical garden provide overview nybg graduate studies program along updated information since last major review program years ago graduate student education always continues core mission new york botanical garden program affiliated six major universities city university new york columbia university new york university yale university cornell university fordham university year history program garden produced graduates including master degrees students focused floristics systematics structural botany economic botany program evolved keep continuous changes science students using modern techniques study plant diversity since program produced graduates including master degrees garden affiliation yale school forestry environmental studies produced dozen graduates garden affiliation fordham university reinitiated produced first graduates growth cullman program molecular systematics genomics program mid student research projects began incorporate molecular biology primarily based dna sequencing address questions related genome evolution evolutionary developmental biology technological advances also changed economic botany research anniversary nybg hallmark graduate studies program excellence teaching training students continuing integrate data modern traditional sources better understand plant diversity
purpose study compare effects black green tea consumption human metabolism seventeen healthy male volunteers consumed black tea green tea caffeine randomized crossover study twenty four hour urine blood plasma samples analyzed nmr based metabonomics high resolution nmr metabolic profiling combined multivariate statistics green black tea consumption resulted similar increases urinary excretion hippuric acid dihydroxyphenyl sulfate end products tea flavonoid degradation colonic bacteria several unidentified aromatic metabolites detected urine specifically green tea intake interestingly green black tea intake also different impact endogenous metabolites urine plasma green tea intake caused stronger increase urinary excretion several citric acid cycle intermediates suggests effect green tea flavanols human oxidative energy metabolism biosynthetic pathways
quality food products means used certain purpose according company economic agent exists market remain competitive continuously although develops changing environment level nutrients food products generates quality essential method resolving consumer study researching welcome actual tendency supplementing processing food research method used obtaining functional poultry aliments made nutritive characteristics making new technological recipes contain nutritive elements determinative role controlling human metabolism testing new products variable periods time thermal treatment order stored kept proper conditions testing recipes sensorial point view comparing qualitative standards valid presented qualitative characteristics watching qualitative losses according storage conditions products stored freezing thermal treatment analyze interpretation order measure evaluate qualitative characteristics raw materials finite products develop processes testing research activity innovative design possible assure competitiveness food products necessary development partnership university agricultural sciences veterinary iasi production unit safir srl vaslui county
rapid advances research antisense transcripts gradually changing understanding expression herpesviridae genome study transcripts human cytomegalovirus hcmv antisense strand investigated three clinical isolates three cdna clones containing sequences antisense orientation gene identified late hcmv cdna library antisense transcripts ulasts shown transcribed late infection phase three clinical hcmv strains using rapid amplification cdna ends race northern blotting ulasts identical termini different ends two open reading frames predicted ulasts med virol wiley periodicals inc
recent development human induced pluripotent stem cells hipscs proved mature somatic cells return undifferentiated pluripotent state reprogramming done various types adult somatic cells keratinocytes urine cells fibroblasts etc early experiments usually done dermal fibroblasts however required invasive surgical procedure obtain fibroblasts patients therefore suspension cells blood urine cells considered ideal reprogramming convenience obtaining primary cells report efficient protocol ipsc generation peripheral blood mononuclear cells pbmcs plating transduced pbmcs serially new matrix coated plate using centrifugation protocol easily provide ipsc colonies method also applicable umbilical cord blood mononuclear cells cbmcs study presents simple efficient protocol reprogramming pbmcs cbmcs
regulation postharvest treatment propylene mcp ethylene release rate expressions aminocyclopropane carboxylic acid synthase acs aminocyclopropane carboxylic acid oxidase aco genes fuping janshi persimmon diospyros kaki fruit investigated fruits treated propylene mcp stored degrees ethylene release rate treated fruits measured regular intervals rna extracted northern blotting analysis results suggested treatment propylene accelerated expressions acs aco genes enhanced ethylene biosynthesis treatment mcp inhibited expressions two genes ethylene biosynthesis furthermore different effects expressions caused treatments propylene mcp existed various fruit tissues inhibitory effect acs aco genes mcp strongest pericarp followed pulp core tissues area near fruit stalk inhibitory effect weakest enhanced effect acs aco genes propylene increased pulp core pericarp area near fruit stalk expression member acs aco families various tissues also completely different control propylene treatment dkacs gene expressed area near fruit stalk express tissues dkacs gene expressed four tissues treatment propylene
sebaceous gland commonly found association hair follicle traditional function holocrine production sebum complex mixture lipids cell debris rather poorly characterized substances due gland central role acne pathogenesis early research focused lipogenic activity less studied aspects sebaceous gland stem cell biology regulation cellular differentiation transcription factors significance specific lipid fractions endocrine specially neuroendocrine role sebaceous gland contribution innate immunity detoxification skin skin aging recently attracted attention researchers different disciplines summarize recent multidisciplinary progress sebaceous gland research discuss sebaceous gland research may stimulate development novel therapeutic strategies targeting specific molecular pathways pathogenesis skin diseases
shoot apical meristem sam small population stem cells continuously generates organs tissues discuss flower formation sam involves complex network regulatory genes signalling molecules major downstream target network extracellular matrix cell wall local determinant growth rates growth directions discuss number recent studies aimed analysing link cell wall structure molecular regulation involved multidisciplinary approaches including quantitative imaging molecular genetics computational biology biophysics scenario emerges molecular networks impact cell wall anisotropy synthesis thus causing rapid outgrowth organs specific locations specifically involves two interdependent processes activation wall remodelling enzymes changes microtubule dynamics article part themed issue systems morphodynamics understanding development tissue hardware
sialidase gene brevibacterium casei cloned peta overexpressed histidine tagged protein escherichia coli histidine tagged sialidase protein purified characterized crude cell extracts isopropyl beta thiogalactopyranoside induced cells using nta agarose chromatography sds page using purified sialidase indicated single band kda sialidase showed maximum activity temperature degrees kinetic parameters max artificial substrate methylumbelliferyl alpha acetyl neuraminic acid sodium salt hydrate mmol min center dot respectively sialidase may catalyze hydrolysis terminal sialic acids linked alpha alpha linkage polysialogangliosides act monosialotetrahexosylganglioside offers great potential commercially producing polysialogangliosides international union biochemistry molecular biology inc
sphingolipids diverse family lipids important roles membrane compartmentalization intracellular signaling cell cell recognition central sphingolipid metabolite ceramide formed transfer variable length fatty acid coenzyme sphingoid base generally sphingosine dihydrosphingosine sphinganine mammals reaction catalyzed family six ceramide synthases cers cers activity usually assayed using either radioactive substrates describe cers assay fluorescent nbd labeled sphinganine substrate assay readily able detect endogenous cers activity using amounts cell tissue homogenate protein lower reported radioactive assay michaelis menten constant essentially nbd sphinganine unlabeled sphinganine indicating nbd sphinganine good substrate enzymes using assay confirm new clinical immunosuppressant fty competitive inhibitor cers activity show inhibition requires compound lipid tail amine head group summary describe fluorescent assay cers activity circumvents need use radioactive substrates accessible cheaper based assays kim qiao toop morris fluorescent assay ceramide synthase activity lipid res
stage differentiation trophozoite cyst encystation essential step giardia survive outside human host spread infection via fecal oral route previously shown giardia expresses glucosylceramide transferase gct enzyme activity elevated encystation also reported blocking activity gglct interferes biogenesis encystation specific vesicles esvs cyst viability giardia understand role enzyme regulates encystation overexpressed knocked rescued giardial glct gglct gene measured enzymatic activity live parasites well isolated membrane fractions using nbd ceramide udp glucose udp galactose observed gglct able catalyze synthesis glucosylceramide glccer galactosylceramide galcer however synthesis galcer fold higher glccer although activities follow michaelis menten kinetics bindings udp glucose udp galactose enzyme appear non competitive independent modulation ggct synthesis concomitantly influenced expression cyst wall protein cwp overall encystation propose gglct unique enzyme giardia uses enzyme synthesize glccer galcer facilitate process encystation cyst production elsevier rights reserved
standard virus classification scheme arenaviruses bunyaviruses shifted dramatically several groups reported detection isolation divergent groups viruses variety insect collections although viral families differ terms morphology structure genetics recent findings indicate viruses may shared evolutionary origin determine phylogenetic relations among families inferred phylogenetic trees using three methods maximum likelihood bayesian trees rooted suggested molecular clock rooted beast tree results highlight noteworthy relation among viral supergroups different genome organizations study suggests best scenario existence least three monophyletic supergroups well supported recent data indicate viruses evolutionarily genetically interconnected supergroups appear closely related phylogenetic analysis viruses investigated future research sum results also provide insights classification scheme thereby providing new perspective fundamental questions family origins diversity genome evolution elsevier rights reserved
striped field mouse apodemus agrarius one common mammals korea however limited research focused population structure biogeography mouse throughout korea addition taxonomic status species remains unresolved objectives study address inadequacies understanding population structure biogeography taxonomic status agrarius collected samples localities throughout south korean peninsula two nearby islands two remote islands used five microsatellite loci estimated genetic diversity measures populations divergence estimates address objectives except populations two remote islands jeju heuksan populations peninsula nearby islands indicated low values population structure based microsatellite loci supported one subspecies opposing three subspecies reported previously korean peninsula nearby islands however populations jeju island heuksan island showed subspecific differences populations korean peninsula nearby islands information reported population genetics striped field mouse korea allow resolving taxonomy biogeography species
study aimed generate mouse line green fluorescent protein gfp specifically expressed male germ cells assess testicular toxicity mouse line gfp specifically expressed male germ cells generated mating germ cell specific transgenic cre male mouse double fluorescent reporter female mouse using cre loxp mouse line administered ethylene glycol monomethyl ether egme oral gavage green fluorescence intensity testes used indicator examine potential testicular toxicity testing molecular biology histopathology vivo imaging techniques specific testicular gfp expression observed mice gfp mainly expressed germ cell lineage concentrated secondary spermatocytes spermatocytes spermatozoa administration egme organ level green fluorescent intensity testes decreased days disappeared days frozen testicular sections stained dapi showed significantly decreased green fluorescence secondary spermatocytes sperm cells observations consistent testis weight results testicular histopathology application vivo imaging becoming popular mouse line gfp specifically expressed male germ cells may advantages study reproductive toxicity
therapy patients suffering psychiatric disorder schizophrenia requires usage antipsychotic drugs classified two different groups first generation fgas second generation antipsychotics sgas study compares effects two fgas haloperidol flupentixol sga olanzapine synapse formation synaptic activity embryonic rat hippocampal neurons end development perineuronal nets pnns formation synapses resulting spontaneous network activity control treatment conditions studied using indirect culture system neurons astrocytes completely defined media number extent pnns consist extracellular matrix superstructures surrounding synapses altered hippocampal neurons exposure antipsychotic drugs contrast treatment hippocampal neurons haloperidol led slight decrease whereas olanzapine induced significant increase number structural synapses days differential effect concerning synapse numbers also reflected spontaneous activity neuronal networks monitored multielectrode arrays meas context application haloperidol reduced olanzapine significantly enhanced network activity unexpectedly flupentixol regarded fga caused similar effects sga olanzapine augmented synapse number well network activity pilot study provides proof concept neuron astrocyte culture model used investigate impact antipsychotics pivotal parameters neuronal cell biology thereby may support comparative analysis antipsychotics applied therapy schizophrenia ibro published elsevier ltd rights reserved
tigrina tig mutant barley impaired negative control limiting excess protochlorophyllide pchlide accumulation dark upon illumination pchlide operates photosensitizer triggers singlet oxygen production cell death show pchlide singlet oxygen operate signals control gene expression metabolite accumulation tig plants vivo labeling northern blotting polysome profiling protein gel blot analyses revealed selective suppression synthesis small large subunits ribulose bisphosphate carboxylase oxygenase rbcss rbcls major light harvesting chlorophyll binding protein photosystem lhcb well chlorophyll binding proteins response singlet oxygen part effects caused arrest translation initiation photosynthetic transcripts cytoplasmic ribosomes observed changes translation correlated decline phosphorylation level ribosomal protein later stages ribosome dissociation occurred together results identify translation major target singlet oxygen dependent growth control cell death higher plants
translation genotype phenotype represented example expression genes encoding enzymes required biosynthesis phytochemicals important interaction plants environment largely carried transcription factors tfs recognize specific cis regulatory elements genes control tfs target genes organized gene regulatory networks grns thus uncovering grn architecture presents important biological challenge necessary explain gene regulation linking tfs genes control central understanding grns carried using gene centered approaches study employed gene centered approach utilizing yeast one hybrid assay generate network protein dna interactions participate transcriptional control genes involved biosynthesis maize phenolic compounds including general phenylpropanoids lignins flavonoids identified protein dna interactions involving phenolic gene promoters tfs set tfs recognized promoters suggesting role coordinating pathway gene expression integration gene centered network information derived centered approaches provides foundation phenolics grn characterized interlaced feed forward loops link developmental regulators biosynthetic genes
unique light driven enzyme protochlorophyllide oxidoreductase por important model system understanding light energy harnessed power enzyme reactions ultrafast photochemical processes essential capturing excitation energy drive subsequent hydride proton transfer chemistry far proven difficult detect used combination time resolved visible spectroscopy providing complete temporal resolution picosecond microsecond time range propose new mechanism photochemistry excited state interactions active site residues carboxyl group pchlide molecule result polarized highly reactive double bond called reactive intramolecular charge transfer state creates electron deficient site across double bond trigger subsequent nucleophilic attack nadph negatively charged hydride nicotinamide adenine dinucleotide phosphate work provides crucial missing link excited state processes chemistry por moreover provides important insight light energy harnessed drive enzyme catalysis implications design light activated chemical biological catalysts
use caffeine nicotine major metabolites investigated wastewater analysis sewage treatment plants stps across italy suitability tested qualitative quantitative biomarkers assessing population size dynamics specific analytical method based mass spectrometry developed validated raw urban wastewater included two caffeine metabolites methylxanthine methylxanthine never reported wastewater compounds found widely level mass loads calculated multiplying concentrations wastewater daily flow rate normalized population served plant used compare profiles different cities regional differences observed mass loads especially nicotine metabolites significantly higher south center north italy reflecting smoking prevalences population surveys significant weekly trends although mean mass loads caffeine metabolites slightly lower weekend caffeine nicotine metabolites fulfilled requirements ideal biomarker assessment population size easily detectable wastewater stable sewage sampling reflecting human metabolism nicotine metabolites tested quantitative biomarkers estimate population size results agreed well census data caffeine metabolites confirmed good qualitative biomarkers additional information needed caffeine metabolism relation multiple sources main metabolites exploratory study opens way routine use nicotine metabolites estimating population size dynamics elsevier ltd rights reserved
use vitro data support development physiologically based pharmacokinetic pbpk models reduce requirement vivo testing demonstrated three examples first example polychlorotrifluoroethylene vitro studies comparing metabolism tissue response rodents primates made possible obtain definitive data human risk assessment without resorting additional vivo studies primates second example pbpk model organophosphate esters developed parameters defining metabolism tissue partitioning enzyme inhibition characterized vitro studies rest model parameters established literature resulting model able provide coherent description enzyme inhibition following acute chronic exposures mice rats humans final example carcinogenic risk assessment methylene chloride refined incorporation vitro data human metabolism pbpk model
use ligninolytic fungi trametes versicolor degradation micropollutants widely studied however studies addressed treatment real wastewater containing pharmaceutically active compounds phac non sterile conditions main drawback performing treatments difficulty inoculated fungus successfully compete microorganisms growing bioreactor present study several fungal treatments performed non sterile conditions continuous operational mode two types real wastewater effluent namely reverse osmosis concentrate roc wastewater treatment plant veterinary hospital wastewater vhw cases setup consisted two parallel reactors one inoculated versicolor one non inoculated used control main objective work correlate operational conditions traditional monitoring parameters laccase activity phac removal composition microbial communities developed inside bioreactors purpose variety biochemical molecular biology analyses performed phospholipid fatty acids analysis plfa quantitative pcr qpcr denaturing gradient gel electrophoresis dgge followed sequencing results show many indigenous fungi bacteria focus majority previously published research successfully compete inoculated fungi trichoderma asperellum overtook versicolor roc treatment also showed wastewater origin operational conditions stronger impact diversity microbial communities developed bioreactors inoculation versicolor elsevier rights reserved
world runs networks signals communicate sequences symbols numerals examining engineered natural communications networks reveals unsuspected order depends contact unpredictable entity order three roots first proof within quantum theory evidence ever determine explanation agent choosing explanation must unpredictably second root showing clocks step computers tell time serve self adjusting symbol handling agents regulate logically synchronized motion response unpredictable disturbances clock agent certain independence well capacity communicate via unpredictable symbols clock agents adjust tick rate response communication third root noticing unpredictable symbol exchange natural systems including transmission symbols found molecular biology introduce symbol handling agent role played cases person example physicist chooses explanation given experimental outcomes cases biological entity still cases inanimate device computer based detector used physical measurements forbear try explain propensity agents levels cells civilizations form operate networks logically synchronized symbol handling agents point propensity overlooked cosmic order order structured unpredictability ensuing proof appreciating cosmic order leads conception agency replaces volition unpredictability reconceives notion objectivity way makes place agency world described physics specific implications physics outlined elsevier inc rights reserved
significant differences dgis lgts additionally characteristics indicate dgis similar recovered tissue resist viral attacks dark green islands dgis surrounded light green tissues lgts common leaf symptoms plants systemically infected various mosaic viruses performed cytological physiological molecular biological analyses dgis lgts cucumber mosaic virus infected nicotiana tabacum leaves results indicated dgis contained less virus lgts compared lgts dgis contained higher levels metabolites involved plant defence contents reduced glutathione ascorbic acid increased dgis reach levels even higher control plants moreover hormone measurements quantitative real time pcr analysis revealed endogenous salicylic acid ethylene defence genes mediated elevations playing positive roles regulation dgis responses viral infection accumulation cytokinin also much greater dgis lgts finally northern blotting analysis indicated accumulation viral small interfering rnas decreased dgis compared lgts taken together results suggest dgis might represent leaf areas recovered viral infection due locally enhanced defence responses
growing interest use human whole saliva diagnostics disease monitoring alternative blood samples contrast blood whole saliva non sterile body fluid proper hand ling storage required preserve integrity potential biomarkers investigated salivary autoproteolytic degradation using variety approaches determined inhibition protease activities monitoring endogenous proteome addition stability highly protease susceptible proteins histatin statherin prp assessed experimental variables included protease inhibitors salivary incubation temperatures sample heating cocktail containing aebsf aprotinin pancreatic trypsin inhibitor leupeptin antipain edta could prevent histatin statherin prp degradation whole saliva among treatments evaluated short term storage freshly collected samples ice effective without interfering chemistry proteome conclusion whole saliva contains unique mixture enzymes evidenced resilience protease inhibition analytical evidence protein stability needed ensure validity salivary biomarker study outcomes analysis data presented provide help guidance use saliva samples diagnostic purposes
little information human exposure gaseous indoor air pollutants sleeping environment even though conditions environment least worrisome exposure sleep characterized long exposure time absolute relative prevalence specific pollutants uncustomary proximity sources breathing zone paper reports experimental results show impact proximity possible emission sources mattress pillow toy exposure sleeping subjects emissions based full scale experiments environmental chamber using breathing thermal manikin intake fraction gaseous pollutants measured well occurrence rebreathing intake fractions several sleep positions well different bedding arrangements reported results show human metabolism corresponding heat release human body dominant factors dilution pollutants emitted close proximity nose reducing exposure compared case without metabolic heat output effect important sleep position important finding sleeping head covers increases intake factor results rebreathing rate elsevier ltd rights reserved
thermal tetrachloroethene pce remediation steam injection sandy aquifer led release dissolved organic carbon doc aquifer sediments resulting reduced redox conditions accelerated pce biodegradation changes microbial populations changes documented comparing data collected prior remediation event eight years later based premise dual isotope slopes reflect ongoing degradation pathways slopes associated pce tce suggest predominance biotic reductive dechlorination near source area pce predominant chlorinated ethene near source area prior thermal treatment thermal treatment cdce became predominant biotic contribution changes supported presence dehalococcoides dna dhc dhc targeted rrna close source area contrast dual isotope analysis together almost absent depletion comparison cdce depletion suggested cdce subject abiotic degradation due presence pyrite possible surface bound iron reduced iron sulphides downgradient part plume interpretation supported relative lack dhc downgradient part plume results study show thermal remediation enhance biodegradation chlorinated ethenes effect traced mobilisation doc due steam injection turn results reduced redox conditions favor active reductive dechlorination may lead series redox reactions may consecutively trigger biotically induced abiotic degradation finally study illustrates valuable complementary application compound specific isotopic analysis combined molecular biology tools evaluate biogeochemical processes taking place aquifer contaminated chlorinated ethenes elsevier rights reserved
thiazolidinediones improve insulin resistance endothelial dysfunction however mechanisms underlying vasoprotective effects thiazolidinediones remain fully elucidated present study aimed examine molecular mechanism anti vasoconstrictive effects rosiglitazone response endothelin mouse aortas treated rosiglitazone hours induced vasoconstriction assessed wire myography results showed rosiglitazone attenuated induced contraction mouse aortas effect abolished receptor antagonist synthase inhibitor removal endothelium using northern blotting real time pcr western blotting immunohistochemical techniques found rosiglitazone upregulated expression mrna protein levels mouse aortas human vascular endothelial cells induction prevented peroxisome proliferator activated receptor gamma antagonism luciferase reporter assay showed rosiglitazone enhanced etbr gene promoter activity furthermore chromatin immunoprecipitation assays demonstrated peroxisome proliferator activated receptor gamma directly bind gene promoter furthermore vivo treatment rosiglitazone also attenuated induced vasoconstrictions increased expression mouse aortas mesenteric arteries conclusion results demonstrate rosiglitazone attenuated induced vasoconstriction upregulation endothelial peroxisome proliferator activated receptor gamma direct target hypertension
thiocyanate compound containing carbon nitrogen sulfur product number natural industrial processes thiocyanate toxic many organisms including humans removal industrial waste streams important problem although number bacteria use thiocyanate nitrogen source use electron donor two distinct pathways use thiocyanate carbonyl sulfide pathway extensively studied cyanate pathway whose key enzyme thiocyanate dehydrogenase recently purified studied three species thioalkalivibrio group haloalkaliphilic sulfur oxidizing bacteria isolated soda lakes described thiocyanate oxidizers thioalkalivibrio paradoxus cyanatepathway thioalkalivibrio thiocyanoxidans cyanate pathway iii thioalkalivibrio thiocyanodenitrificans carbonyl sulfide pathway study provide comparative genome analysis described thiocyanate oxidizers genomes ranging size million base pairs focusing thiocyanate degradation also analyzed differences sulfur carbon nitrogen metabolism found thiocyanate dehydrogenase gene present different thioalkalivibrio strains two distinct genomic contexts genotypes first genotype defined genes flavocytochrome sulfide dehydrogenase upstream thiocyanate dehydrogenase operon present two strains including type strain paradoxus whereas second genotype genes located downstream together two additional genes unknown function present eight strains including type strains thiocyanoxidans additionally found differences presence absence genes various sulfur oxidation pathways sulfide quinone oxidoreductase dissimilatory sulfite reductase sulfite dehydrogenase one strain thiocyanodenitrificans lacks genes encoding carbon concentrating mechanism none investigated genomes shown contain known bicarbonate transporters study gives insight genomic variation thiocyanate oxidizing bacteria may lead improvements application organisms bioremediation industrial waste streams
article explores ethical issues identified emerging technologies early genetic engineering synthetic biology scientific advances field form continuum ethical considerations raised time new developments occur underlying concern cumulative effect scientific advances ensuing technological innovation change understanding life humanity
paper aims develop theoretical framework applicative implementation new analysis method purpose determining classifying mineral waters romania europe use mathematical modelling fuzzy logic firstly article underlines properties mineral waters terms curative effects particularly role upon human metabolism values two chemical elements constitute index basis creating comparative database embed limited number samples statistical value brief mathematical model determines mineral water spring springs implemented time illustrates graphically membership degree unknown water sample specific spring making use concentration indexes
paper analyses changing conceptualisation cellular differentiation twentieth century involved move away view process irreversible understanding contingent examine import shift transformation stem cell biology including therapeutic promise attributed field came challenge historical conceptions cell stem cell take starting point nobel prize physiology medicine awarded jointly john gurdon shinya yamanaka view nobel committee work delineates paradigm shift understanding cellular differentiation one incorporates concept plasticity explore emergence uses meanings concept within specific biological context examining emphasising role epistemological tool setting plasticity introduced cell biologist helen blau course research undertaken genetics cell differentiation argue blau experimental theoretical contributions seminal reconceptualisation process provide crucial link work gurdon yamanaka overall paper highlights contested process conceptual change within biomedical sciences also draws attention dynamic reciprocal relationship conceptual technical change exemplified changing conceptions cell differentiation following analysis gene expression using new cell fusion cloning techniques broadly paper also affords window onto shifting priorities goals values within late twentieth century biomedical research
paper introduces dna wrapped multi walled carbon nanotube mwcnt modified genosensor detection escherichia coli coli polymerase chain reaction pcr amplified real samples staphylococcus aureus aureus used investigate selectivity biosensor capture probe specifically recognizing coli dna firstly interacted mwcnts wrapping single stranded dna ssdna onto nanomaterial dna wrapped mwcnts immobilised surface disposable pencil graphite electrode pge detection dna hybridization electrochemical behaviors modified pges investigated using raman spectroscopy differential pulse voltammetry dpv sequence selective dna hybridization determined evaluated changes intrinsic guanine oxidation signal dpv numerous factors affecting hybridization optimized target concentration hybridization time etc designed dna sensor well detect coli dna min detection time pmole detection limit sample volume
protocol introduces detect differentiated interrenal steroidogenic cells simple whole mount enzymatic activity assay identifying differentiated steroidogenic tissues chromogenic histochemical staining beta hydroxysteroid dehydrogenase delta isomerase beta hsd activity positive cells critical monitoring morphology differentiation adrenocortical interrenal tissues mammals teleosts respectively zebrafish model optical transparency tissue permeability developing embryos larvae allow whole mount staining beta hsd activity staining protocol performed transgenic fluorescent reporter lines marking developing pronephric endothelial cells enables detection steroidogenic interrenal tissue addition kidney neighboring vasculature combination vibratome sectioning immunohistochemistry confocal microscopy visualize assay vascular microenvironment interrenal steroidogenic tissues beta hsd activity assay essential studying cell biology zebrafish interrenal gland date suitable antibody available labeling zebrafish steroidogenic cells furthermore assay rapid simple thus providing powerful tool mutant screens targeting adrenal interrenal genetic disorders well determining disruption effects chemicals steroidogenesis pharmaceutical toxicological studies
report investigated possible participation canine distemper virus cdv eight year old male akita dog neuromuscular disease clinically tetraparesis muscular atrophy generalized weakness intolerance exercise diminished absent spinal reflexes dog serologically negative toxoplasma gondii necropsy confirmed generalized muscular atrophy histopathology revealed white matter demyelinating encephalitis generalized atrophy fibrosis skeletal muscle fibers myocardial atrophy fibrosis loss demyelination peripheral nerve fibers axonal degeneration endoneural fibrosis interstitial pneumonia immunohistochemistry identified cdv antigens within cerebellum spinal cord skeletal muscle lungs spleen pcr direct sequencing amplified cdv nucleoprotein gene cerebellum sciatic nerves collectively findings suggest dog demonstrated systemic canine distemper also affected muscular system probably triggered manifestations neuromuscular disease observed case pvj rights reserved
research framework big project aimed knowledge human metabolism hemodialysis patients reaching high sensitivity obtaining accurate values elements low concentrations instrumental neutron activation analysis inaa used characteristics primary analytical method require chemical physical pretreatment samples analyzed representative groups homogeneous population specific matrices hemodialysis fluids whole human blood irradiation performed rotating rack lazy susan triga mark reactor casaccia enea neutron flux irradiation time results hemodialysis fluids report values behavior selected trace elements levels show decrease pre post dialysis whereas increase elements seem keep constant two phases similar data found whole human blood selected elements finally exploiting inaa peculiarity investigated levels trace ultra trace elements interesting toxicological nutritional point view seldom determined due analytical implications finally chemiometric investigation performed dendrogram trees canonical discriminant analysis principal component analysis evidenced similar effects hdf bic treatments investigated fluids respect capd dialysis
research framework big project regarding knowledge human metabolism patients affected renal disease aimed assess levels selected essential non essential elements fig different biological matrices whole blood serum urine three italian sub populations analytical methodology involved instrumental neutron activation analysis inaa primary analytical technique samples totally irradiated triga nuclear reactor casaccia enea neutron flux results show similar distribution essential elements whereas quite different non essential elements statistical treatment evidenced differences among samples grouping subpopulations unique one way levels found considered reference values investigated matrices elsevier rights reserved
review discusses supramolecular biofunctional materials novel class biomaterials formed small molecules held together via noncovalent interactions complexity biology relevant biomedical problems inspire also demand effective molecular design functional materials supramolecular biofunctional materials offer almost unlimited possibilities opportunities address challenging biomedical problems rational molecular design supramolecular biofunctional materials exploit powerful versatile noncovalent interactions offer many advantages responsiveness reversibility tunability biomimicry modularity predictability importantly adaptiveness review besides elaborating merits supramolecular biofunctional materials mainly form hydrogels nanoscale assemblies resulting noncovalent interactions also discuss advantages small peptides prevalent molecular platform generate wide range supramolecular biofunctional materials applications drug delivery tissue engineering immunology cancer therapy fluorescent imaging stem cell regulation review aims provide brief synopsis recent achievements intersection supramolecular chemistry biomedical science hope contributing multidisciplinary research supramolecular biofunctional materials wide range applications envision supramolecular biofunctional materials contribute development new therapies ultimately lead paradigm shift developing next generation biomaterials medicine elsevier ltd rights reserved
review examines mechanisms propelling cofactor independent organic cofactor dependent metal dependent decarboxylase chemistry decarboxylation removal carbon dioxide organic acids fundamentally important reaction biology numerous decarboxylase enzymes serve key components aerobic anaerobic carbohydrate metabolism amino acid conversion past decade knowledge mechanisms enabling crucial decarboxylase reactions continued expand inspire review focuses organic cofactors biotin flavin nad pyridoxal phosphate pyruvoyl thiamin pyrophosphate catalytic centers significant attention also placed metal dependent decarboxylase mechanisms elsevier inc rights reserved
study evaluated control streptococcosis outbreaks brazil isolated diseased sorubim identified lactococcus garvieae genetic sequencing report determined potential lactococcosis control sorubim pseudoplatystoma two vaccines aqueous based whole cell inactivated vaccine bacterin oil adjuvanted bacterin efficacy evaluated days post vaccination challenge garvieae antibody production response non specific immune response compared amongst treatments high protection levels achieved oil adjuvanted vaccine relative percentage survival value additionally oil adjuvanted vaccine increased immunogenicity bacterin indicated greater agglutination antibody titres first report positive effect vaccine administration specific immunity sorubim study showed specific antibody plays important role sorubim defence lactococcosis innate immune responses similar studied animals results demonstrated oil adjuvanted vaccine effective alternative protection sorubim garvieae disease
study examined impact shiitake mushroom extract viability enzyme activity bifidobacterium breve atcc lactobacillus reuteri dsm yoghurt refrigerated storage presence significantly enhanced viability strains reuteri dsm exhibited better stability yoghurt breve atcc reuteri dsm showed highest viability yoghurt samples containing followed breve atcc control samples results suggest used natural additive dairy products improve growth viability reuteri dsm breve atcc strains
study focuses characterizing effect high salt diet hsd intestinal immunity risk inflammatory bowel diseases ibd found mice hsd increased frequency producing cells intestinal lamina propria compared mice normal diet furthermore intestinal producing cells tcr beta cells hsd increased helper responses small large intestines increase response gut associated lymphoid organ although hsd change percentage regulatory treg cells hsd significantly inhibit secretion suppressive function treg cells moreover found hsd exacerbates trinitrobenzenesulfonic acid tnbs induced colitis response significantly increased colonic hsd tnbs treated mice compared tnbs treated mice study demonstrates hsd stimulates intestinal response inhibits function treg cells moreover hsd exacerbates tnbs induced mice colitis suggesting hsd disrupts intestinal immunity increases risk ibd
study aim identify relat occurrence billfish larvae eggs southeastern coast brazil summer two seasons surface trawls done using ichthyoplankton net coast vitoria rio janeiro ilhabela fish larvae collected identification billfish larvae done molecular biology using dna barcode coi gene season five sailfish two white marlin larvae identified season two sailfishes two white marlin larvae two swordfish eggs identified occurrence billfish larvae shall studied inferences area period spawning development early life stages fish made accurately
study investigated association infectious microbes persistent infection human papillomavirus type hpv cervical cancer bacterial strains identified enterococcus staphylococcus bacillus corynebacterium based partial rdna sequence hpv positive cervical cancer biopsies total dna isolated four bacterial strains hpv genes genome detected using polymerase chain reaction pcr southern blotting rna transcripts hpv genes detected total bacterial rna samples using reverse transcription pcr hpv protein expression detected bacterial cells western blotting immunocolloidal gold electron microscopy presence virus particles bacterial cells demonstrated transmission electron microscopy results suggest bacteria carrying hpv could provide potential explanation infectious microbes contribute progression hpv infection cervical cancer
study investigated human gastrointestinal uptake subsequent whole body retention orally administered inorganic radioactive cobalt eight adult volunteers aged years seven given solutions containing stable cobalt carrier six given carrier free administered activities ranged kbq observed mean based days accumulated urinary excretion sampling whole body counting carrier free carrier associated values reasonable agreement values reported previous studies involving single intake inorganic cobalt time pattern total retention including residual cobalt tract included short term component biological half time average standard error mean two nuclides intermediate component mean half time long term component observed two volunteers half times ranging two isotopes present data conclude short lived internal absorbed dose delivered within days following oral intake high individual variation influenced transit time unabsorbed cobalt gastro intestinal tract elsevier ltd rights reserved
study questions presumed relation formal schooling scientific literacy biotechnologies comparing science nonscience majors knowledge attitudes toward biotechnological applications conclusions drawn formal learnings improve pupils understandings attitudes toward biotechnology applications sample study consists undergraduate graduate students nonscience science majors biotechnology knowledge questionnaire biotechnology attitude questionnaire administered descriptive statistics mean percentages test correlations used examine participants knowledge biotechnology attitudes toward biotechnological applications differences regards majors although science majors higher knowledge attitude scores nonscience majors possible say sufficient knowledge biotechnologies besides participants attitudes toward biotechnological applications considerably related knowledge biotechnology international union biochemistry molecular biology
study performed culture preliminarily identify primordial germ cells pgcs isolated genital ridge mongolian sheep fetus growth characteristics sheep pgcs detected different culture systems culture media resources state passages feeder cells obtained embryonic germ cells identified morphology enzymology immunofluorescence results showed sheep cell colonies ridgy typically nest like compact regular edges alkaline phosphatase staining reaction weakly positive cells expressed kit rex nanog oct immunofluorescence detection weakly positive oct whereas positive ssea ssea ssea tra tra
text proposes time essentially related one visual metabolic rate metabolic rate regulated speed intake energy rate production adenosine triphosphate atp visual areas author working hypothesis visual area brain known human region involved motion detection may region responsible time perception time sense senses thus compiled visual region speed human perception reality time relationship human perception reality rate reality taking place given light waves environment hence vision visual cortex area may vitally important aspects answering question time looking clock time may governed rate metabolism rate production atp mitochondria example general human metabolism fast time runs slow metabolic rate relatively slow time runs relatively faster many factors enter speed metabolism age sex drug effects velocity compared speed states boredom excitement darkness light mental states sleep relationship time space discussed metabolic rate mind uncertainty principle quantum picture reality adopted model qualitatively quantizes space time showing must forever connected space time idea discussed relation zeno paradox suggests space time indeed quantized events instants entropy defined reality understood terms speed processing instants arrow time pictured caused long term potentiation synaptic neurons within brain minkowski einstein space time analyzed compared visual metabolic rate probable consequences model proposed
work conducted prepare beta caryophyllene hydroxypropyl beta cyclodextrin inclusion complex beta bcp investigate effects mechanisms cognitive deficits vascular dementia rats first beta bcp prepared optimized characterized evaluated bcp administered rats upregulate downregulate cannabinoid receptor type results showed beta bcp significantly increase bioavailability bcp morris water maze test beta bcp attenuate learning memory deficits rats cerebral blood flow cbf monitoring results indicated beta bcp promote recovery cbf moreover molecular biology experiments showed beta bcp increase expression levels brain tissues particularly hippocampus white matter tissues well expression levels pik akt overall findings demonstrated protective effects beta bcp cognitive deficits induced chronic cerebral ischemia suggested potential beta bcp therapy vascular dementia future
comprehensive analysis genomic dna sequence human chromosome identified novel gene encoding big protein amino acid residues named tprbk tpr containing big gene cloned keio novel protein tprbk possesses units tpr motif known associate diverse range biological functions orthologous genes human tprbk found widely animal species insecta mammal found plants fungi nematoda northern blotting pcr analyses revealed tprbk gene expressed ubiquitously human mouse fetal tissues various cell lines human monkey mouse lmmunofluorescent staining synchronized monkey cos cells several relevant antibodies indicated tprbk changes subcellular localization cell cycle interphase tprbk locates centrosomes mitosis translocates spindle poles mitotic spindles spindle midzone period cytokinesis stays midbody immunoprecipitation assay immunofluorescent staining adequate antibodies revealed tprbk binds aurora proteins together translocate throughout mitosis cytokinesis treatments cells two drugs blebbistatin known inhibit contractility actin myosin disturbed proper intracellular localization tprbk moreover knockdown tprbk expression small interfering rna sirna suppressed bundling spindle midzone microtubules disrupted midbody formation arresting cells phase observations indicated novel big protein tprbk essential formation integrity midbody hence postulated tprbk plays critical role progress mitosis cytokinesis mammalian cell cycle elsevier rights reserved
tick borne borreliae include lyme disease relapsing fever agents transmitted primarily ixodid hard argasid soft tick vectors respectively tick host interactions feeding complex host immune responses influenced biological differences tick feeding individual differences within host species one first encounters spirochetes entering vertebrate host skin local antigen presenting cells regardless whether tick associated borrelia pathogenic study performed basic comparison cytokine responses thp derived macrophages exposure selected borreliae including nonpathogen using thp cells differentiated macrophages eliminated variations host response reduced system vitro model evaluate extent borrelia spp influence cytokine production differentiated thp cells exposed four borrelia spp borrelia hermsii dah borrelia burgdorferi burgdorferi borrelia lonestari lipopolysaccharides lps activated media treatment controls intracellular secreted interferon ifn gamma interleukin beta tumor necrosis factor tnf alpha measured using flow cytometric luminex based assays respectively postexposure time points using general linear model anova cytokine treatment borrelia spp lps compared treatment significant effect secreted tnf alpha time point significant effect intracellular ifn gamma tnf alpha however see significant differences selected cytokines among borrelia spp treatments thus model unable distinguish pathogenic nonpathogenic borreliae using limited array selected cytokines unique immune profiles may detectable vitro model may reveal predictors pathogenicity borreliae unknown pathogenicity larger panel cytokines would desirable test
ticks blood sucking ectoparasites great medical veterinary significance transmit bacteria protozoa fungi viruses causing variety human animal diseases worldwide present study intestinal bacterial flora associated haemaphysalis flava ticks different developmental stages analyzed using polymerase chain reaction pcr denaturing gradient gel electrophoresis dgge eleven distinct dgge bands found using pcr dgge method sequences analyses indicated belonged bacillus cereus candidatus rickettsia erwinia klebsiella pneumoniae pectobacterium carotovorum pseudomonas aeruginosa rickettsia peacockii rickettsia helvetica rickettsia slovaca staphylococcus simulans uncultured bacterium clone find pneumoniae aeruginosa isolates presented flava ticks different developmental stages present results indicated zoonotic pathogens present flava ticks henan province china knowledge first report intestinal bacterial flora associated flava ticks china
titanium widely used orthopedic dental fields however inert nature makes unsuitable application promoting bone cell growth osteogenic differentiation antibacterial ability aims current study investigate antimicrobial activity biofunction polypeptide antibiotic bacitracin obtain multi biofunctional titanium implant covalently immobilizing titanium bacitracin results showed bacitracin possessed low minimum inhibitory concentration mic staphylococcus aureus methicillin resistant staphylococcus aureus mrsa non cytotoxicity concentration human bone marrow mesenchymal stem cells hbmscs furthermore bacitracin could improve osteogenic differentiation hbmscs results scanning electron microscope sem ray photoelectron spectroscopy xps indicated bacitracin covalently immobilized surface titanium immobilized bacitracin could improve hydrophilic immobilized titanium results antimicrobial assay demonstrated covalently immobilized bacitracin also excellent antimicrobial property bacitracin immobilized titanium could inhibit bacterial adhesion colonization results cell biology experiments proved bacitracin immobilized titanium could improve hbmscs adhesion proliferation osteogenic differentiation also found macrophages difficult spread activate surface bacitracin immobilized titanium secretion inflammatory factors inhibited conclusion novel bacitracin immobilized titanium multi biofunctions including outstanding antibacterial properties excellent cell biology performance restraining inflammation exciting application prospect elsevier rights reserved
decrease accumulation reducing non reducing sugars potato tubers stored low temperature multiple gene silencing vector pbiphlsar possessing part starch phosphorylase starch associated genes constructed transformed potato solanum tuberosum cultivars agria marfona polymerase chain reaction pcr southern blotting indicated rnai construct transformed successfully genome real time reverse transcription pcr pcr analysis showed expression level starch phosphorylase starch associated genes reduced transgenic microtubers relation non transgenic plants accumulation total reducing sugars transgenic microtubers significantly decreased line compared control repression genes decreased phosphate content starch increased starch content transgenic microtubers implying silencing starch phosphorylase starch associated genes reduced starch breakdown cold storage conditions
efficiently express gene interest transgenic plants choice promoter crucial factor directly affects expression transgene yield desired phenotype arabidopsis beta carotene hydroxylase gene atbch shows constitutive ubiquitous expression thus selected one best candidates constitutive promoter analysis silico northern blotting semi quantitative pcr analysis investigate atbch promoter activity upstream region gene fused beta glucuronidase gus transformed arabidopsis molecular characterization transgenic leaf tissues atbch promoter generated strong activity drives fold higher gus expression cauliflower mosaic virus promoter transcriptional translational levels respectively furthermore gus enzyme activity driven atbch promoter fold higher produced promoter histochemical gus staining ubiquitous expression atbch promoter observed tissues arabidopsis semi quantitative pcr analysis different tissues showed promoter serves strong constitutive driver transgene expression dicot plants
identify genes expression chenopodium album exposed nacl stress screen ests related salt stress subtractive suppression hybridization ssh library album salt stress constructed present study random est sequencing produced high quality ests genbank average size clustered contigs singletons classified categories according function annotations ests showed similarities gene sequences non redundancy database ests showed low similarities transcriptional profiles ests randomly selected unknown novel ests ssh library varying nacl concentration different time points analyzed results indicated high proportion tested ests activated salt stress four ests responded nacl also enhanced expression level exposed aba peg stresses four ests validated northern blotting consistent results pcr results suggested genes corresponded ests might involved stress response regulation complete sequences detailed function ests need studied
improve quality chinese traditional paocai two psychrotolerant lactic acid bacteria lab strains isolated paocai quality chinese paocai product using two strains starter cultures compared control sample fermented aged brine degrees results suggested physicochemical sensory features paocai fermented psychrotolerant lab suitable industrial applications nitrite content paocai fermented psychrotolerant lab significantly lower control paocai low temperature fermentation starter cultures psychrotolerant lab could effectively prevent overacidity ripening paocai products additionally paocai fermented psychrotolerant lab harbored relatively simple microbial flora revealed polymerase chain reaction denaturing gradient gel electrophoresis study provides basis improving quality chinese traditional paocai large scale production low temperature chinese traditional paocai products
investigate effects biejia ruangan tablet acurrency signiae parts per thousand double dagger brt containing serum expression matrix metalloproteinase mmp tissue inhibitor metalloproteinase timp cultured renal interstitial fibroblasts different brt containing sera prepared gastric gavages rats high dose mid dose low dose brt respectively expression extracellular matrix nrk cells induced treatment human transforming growth factor beta recombined human tgf beta brt containing serum western blotting northern blotting used measure type iii procollagen mmp timp high dose brt containing serum could decrease type iii procollagen gene expression boosted tgf beta time cut timp protein gene expression increased tgf beta treatment cells recombined human tgf beta significant effect mmp expression brt containing serum also effect mmp expression high dose brt anti fibrosis effects nrk cells indicated inhibition type iii procollagen timp expression
isolate identify dna binding protein affinity mobile chromosomal repeat element bcr bacillus cereus group bacteria biotinylated bcr element immobilized streptavidin coated magnetic beads used pull kda dna binding protein whole cell protein extract cereus atcc protein identified product orf encoded bacteriophage related autonomously replicating linear genetic element pbclin carried strain dna binding bcr specific northern blotting orf transcribed orf also certain instances orf transcriptional readthrough terminator located orf orf orf pbclin encodes dna binding protein orf transcribed upstream gene orf subset transcripts also downstream gene orf alternative transcription termination cereus group contains bacterial species medical economic importance bacteriophages phage encoded proteins bacteria suggested potential therapeutic agents understanding biology bacteriophage related genetic elements functional characterization genes high relevance
summarize principal findings risk protective factors childhood asthma retrieved systematic reviews topics children aged years january medline embase cinahl scopus cdsr total studies searched databases among systematic reviews srs included focused prenatal factors perinatal factors postnatal factors srs good methodological quality determined assess systematic reviews tool reviewing evidence parental asthma prenatal environmental tobacco smoke prematurity particularly preterm birth well established risk factors childhood asthma current findings suggest mild moderate causal effects certain modifiable behaviors exposures pregnancy maternal weight gain obesity maternal use antibiotics paracetamol maternal stress perinatal period birth caesarean delivery postnatal life severe respiratory syncytial virus infection overweight obesity indoor exposure mold fungi outdoor air pollution childhood asthma suggestive evidence must confirmed interventional studies interventions feasible well designed prospective studies american academy allergy asthma immunology
today indigenous forests cover less south africa land surface highly fragmented forest relicts small typically occur fire protected gorges along eastern great escarpment yet hold unique valuable fauna high endemism ancient phylogenetic lineages fostered long term climatic stability complex microclimates despite numerous studies southern african vegetation cover current state knowledge natural extension indigenous forests rather fragmentary use integrated approach population level phylogeography climatic niche modeling forest associated chafer species assess connectivity extent forest habitats since last glacial maximum current past species distribution models ascertained potential fluctuations forest distribution supported much wider potential current extension forests based climatic data considerable genetic admixture mitochondrial nuclear dna among many populations increase mean population mutation rate extended bayesian skyline plots species indicated extended better connected forests recent past kya genetic isolation certain populations revealed population differentiation statistics well landscape connectivity statistics habitat succession scenarios suggests considerable loss habitat connectivity major anthropogenic influence likely conservational actions need considered
tomorrow genome medicine lung cancer focus homogeneity heterogeneity lung cancer play important role development drug resistance genetic complexity well confusion difficulty early diagnosis therapy chromosome positioning repositioning may contribute sensitivity lung cancer cells therapy heterogeneity associated drug resistance mechanism lung carcinogenesis ccctc binding factor plays critical roles genome topology function increased risk carcinogenicity potential lung cancer specific mediations chromosome reposition lung cancer regulated ccctc binding factor single cell gene sequencing part genome medicine paid special attention lung cancer understand mechanical phenotypes single cell biology heterogeneity chromosome positioning function single lung cancer cells first propose develop intelligent single cell robot human cells integrate together systems information molecules genes proteins organelles membranes architectures signals functions powerful automatic system assist clinicians decision making molecular understanding risk analyzing prognosis predicting elsevier ltd rights reserved
transformation products pharmaceuticals formed human metabolism within sewage treatment plant receiving waters predicted cases less toxic parent compound common aquatic species however little available data demonstrate whether generally case present study framework developed guide testing transformation products using phototransformation beta blocker propranolol test hypothesis particular transformation route phototransformation important depletion mechanism pharmaceuticals surface waters fast reaction rate constants environmentally relevant conditions samples propranolol deionized water diw river water exposed solar simulator lambda comparative toxicity propranolol degraded mixtures measured using algal pseudokirchneriella subcapitata rotifer brachionus calyciflorus screening tests results suggested reduction toxicity photodegraded mixtures compared parent active pharmaceutical ingredient samples tested chemical analysis effect test solutions supported hypothesis propranolol transformed compounds appear less toxic organisms tested study conditions although reactions much faster diw profiles transformation products similar matrices two starting concentrations results propranolol implied reduction toxicity using algal rotifer screening tests probably due production hydrophilic polar transformation products results provide useful insights environmental risk assessment pharmaceuticals taking account transformation products
transgenic brinjal plants solanum melongena expressing cryab gene bacillus thuringiensis berliner evolved agrobacterium mediated transformation system present study lines coiab coiab colab coiab coiab coiab coiab harboring cryah gene obtained pcr southern blotting analyses proved presence integration cryab lines polyclonal rabbit anti cryab antiserum detected expression kda cryab polypeptide lines expression cryab protein transgenic lines also confirmed lateral flow sticks cryab assay molecular analyses progenies harboring cryab gene proved presence expression transgene interest chi square chi tests revealed segregation ratio cryab gene lines viz coiab coiab indicating transgene integrated single locus transgenic lines thus obtained study used investigate potential cryab protein controlling root knot nematode meloidogyne incognita bioassay root knot nematode resistance plants expressing cryab showed significant decrease number galls eggmasses cryab transgenic lines coiab coiab compared control addition significant decrease number eggs per eggmass transgenic lines tested non transgenic controls thus transgenic brinjal plants could also form part integrated nematode management program
transgenic tomato plants expressing full length cpv truncated coat protein gene cpv tomato leaf curl taiwan virus tolctwv generated agrobacterium mediated transformation transgene integration expression confirmed pcr southern blotting northern analysis respectively resistance evaluated plants progenies using viruliferous whiteflies two different inoculum pressures whiteflies plant upon inoculation tolctwv using viruliferous whiteflies various levels phenotypic reaction observed complete resistance observed plants tested reaction transgenic tomato lines carrying full length truncated gene tolctwv phenotype susceptible non transgenic control delayed symptom expression iii complete susceptible delayed symptom expression phenotype recovered phenotype either plants symptom expression non transgenic plants delayed symptom expression phenotype dot blot quantification tolctwv using replicase gene probe revealed recovered phenotypes accumulated low level tolctwv virus concentration gradually reduced weeks postinoculation possible mechanisms mediated resistance discussed
transient receptor potential vanilloid trpv transient receptor potential ankyrin trpa expressed mainly primary sensory neurons function major nociceptive integrators also present rat endometrium oestrogen regulated manner trpv upregulated peritoneal ovarian endometriosis patients information trpa pathophysiological significances study patients undergoing laparoscopic surgery investigated severe dysmenorrhoea due rectosigmoid deep infiltrating endometriosis uterine fibroid induced moderate dysmenorrhoea tubal infertility pain trpa trpv mrna protein expressions determined quantitative polymerase chain reaction semi quantitative immunohistochemistry endometrium samples taken curettage results correlated clinical characteristics including pain intensity trpa trpv receptors expressed healthy human endometrium mrna protein levels sparse scattered cytoplasmic trpa trpv immunopositivities found stroma epithelial layers detected upregulated mrna levels deep infiltrating endometriosis lesions trpv gene expression also elevated autocontrol endometrium deep infiltrating endometriosis patients histological scoring revealed significant trpa trpv difference deep infiltrating endometriosis stroma epithelium deep infiltrating endometriosis epithelium compared control samples besides measured elevated stromal trpv immunopositivity deep infiltrating endometriosis stromal trpa trpv immunoreactivities strongly correlated dysmenorrhoea severity well trpv expression ectopic epithelial cells macrophages dyspareunia epithelial trpa stromal trpv immunopositivity also positively correlated dyschezia severity provide first evidence presence non neuronal trpa receptor healthy human endometrium confirm expression trpv channels upregulations rectosigmoid deep infiltrating endometriosis lesions correlations pain intensity suggest potential roles pathophysiological mechanisms disease
translation initiation eukaryotes archaea involves methionylated initiator trna delivered ribosome ternary complex aif gtp eukaryotic archaeal initiator trnas contain highly conserved base pair top acceptor stem importance base pair discriminate initiator trnas elongator trnas established previously using genetics biochemistry however structural data illustrating base pair participates accurate selection initiator trnas translation initiation systems available describe crystal structure mutant coil initiator trna met aminoacylated methionine mismatch end trna acceptor stem changed base pair sequence alignments show mutant coli trna good mimic archaeal initiator trnas crystal structure determined angstrom resolution shows pair adopts unusual arrangement syn conformation forms single bond interaction interaction requires protonation atom moreover phosphoryl group folds back major groove acceptor stem interacts atom possible role unusual geometry pair recognition initiator trna partners eukaryotic archaeal translation initiation discussed
translational science emerging field holds great promise accelerate development novel medical interventions field grows demand highly trained biomedical scientists fill positions created many graduate postdoctorate training programs provide trainees sufficient education take advantage growing employment sector help better prepare trainees national institutes health possible careers translation created translational science training program tstp tstp intensive day training program introduces nih postdoctoral trainees graduate students science operation turning basic research discoveries medical therapeutic device diagnostic also exposes variety career options translational science combination classroom teaching practicing experts various disciplines translation small group interactions pre clinical development teams participants tstp gain knowledge aid obtaining career translational science building network make transition field international union biochemistry molecular biology
treatment strategies oncology nowadays largely based target therapy model allows personalize cure patient depending distinctive host disease features general concept targeted drugs effective tumor exhibits target breast cancer pathology may correspond expression estrogen receptors biomarkers evaluated breast cancer tissues companion diagnostic tests however evidence suggests first step breast cancer predictive pathology still represented morphology instance histological types tubular cribriform carcinomas define patients may need treatments surgical excision neoadjuvant studies shown patients affected lobular carcinomas likely beneficial effects chemotherapy second step prediction represented immunophenotyping immunohistochemical evaluation four markers estrogen progesterone receptors remains best practice breast cancer predictive pathology molecular pathology certainly reshaped way approach breast cancer diagnosis aim review discuss current knowledge predictive pathology management breast cancer patients focusing benefits drawbacks traditional tools novel improvements molecular biology
trypsin documented variety species including vertebrates invertebrates little known amphioxus model organism insights origin evolution vertebrates identified trypsin gene branchiostoma japonicum cdna long orf encoding deduced protein amino acids deduced protein terminal signal peptide amino acids activation peptide typical cleavage site arg ile tryp spc domain catalytic triad asp ser substrate binding residue asp characteristic trypsinogens recombinant trypsin protein able hydrolyse trypsin prototypic substrate baee inhibited trypsin specific inhibitor soybean trypsin inhibitor northern blotting tissue section situ hybridization demonstrated trypsin gene expressed tissue specific manner abundant levels hepatic caecum mid gut ovary whole mount situ hybridization showed began express middle third full length primitive gut day larvae hepatic caecum form later development phylogenetic analysis indicated amphioxus ascidian trypsins closer vertebrate trypsins suggesting continuous evolutionary divergence vertebrate trypsins split protochordate vertebrate common ancestor
tuberculosis remains among deadly diseases world available vaccine tuberculosis bacille calmette guerin bcg vaccine ensure full protection adults global urgency development effective vaccine preventing disease transmission requires novel approaches exploring use lactic acid bacteria lab vector antigen delivery mucosal sites demonstrate successful expression surface display mycobacterium tuberculosis fusion antigen comprising agb esat referred age lactobacillus plantarum age fusion antigen targeted bacterial surface using two different anchors lipoprotein anchor directing protein cell membrane covalent cell wall anchor age producing plantarum strains using two anchors induced antigen specific proliferative responses lymphocytes purified positive donors similarly strains induced immune responses mice nasal oral immunization impact anchoring strategies reflected dissimilarities immune responses generated two plantarum strains vivo present study comprises initial step toward development plantarum vector tuberculosis antigen delivery importance work presents development lactobacillus plantarum candidate mucosal vaccine tuberculosis tuberculosis remains one top infectious diseases worldwide available vaccine bacille calmette guerin bcg fails protect adults adolescents direct antigen delivery mucosal sites promising strategy tuberculosis vaccine development lactic acid bacteria potentially provide easy safe low cost delivery vehicles mucosal immunization engineered plantarum strains produce mycobacterium tuberculosis fusion antigen anchor antigen bacterial cell wall cell membrane recombinant strains elicited proliferative antigenspecific cell responses white blood cells tuberculosis positive humans induced specific immune responses nasal oral administrations mice
tuberous sclerosis complex tsc rare multi system disorder primary manifestations benign tumors lesions various organs body including brain tsc patients often suffer epilepsy mental retardation autism spectrum disorder asd therefore tsc serves model epilepsy asd tumorigenesis tsc caused lack functional tsc tsc complex serves major cellular inhibitor mammalian target rapamycin complex mtorc mtorc kinase controlling anabolic processes eukaryotic cells consequently mtorc inhibitors rapamycin serve experimental already approved drugs several tsc symptoms however rapalogs although quite effective need administered chronically likely lifetime since therapy discontinuation results tumor regrowth epilepsy recurrence recent studies revealed metabolism excitability case neurons cells lacking tsc tsc complex changed features may potentially used treat tsc symptoms review first provide basic facts tsc molecular background next discuss newest findings tsc cell biology used improve existing therapies tsc diseases linked mtorc hyperactivation authors iubmb life published wiley periodicals inc behalf international union biochemistry molecular biology
tumor ablation thermal chemical radiological sources received substantial attention treatment many localized malignancies primary goal ablation procedures eradicate viable malignant cells within designated target volume application energy chemicals methods radiotherapy chemical biological ablation photodynamic therapy cryoablation high temperature ablation radiofrequency microwave laser ultrasound electric based ablation developed focal malignancies recent years large volume data emerged effect situ tumor destruction ablation inflammatory immune components resulting systemic anti tumor reactions evident situ tumor ablation involve tumor antigen release cross presentation release damps make tumor cellular vaccine tumor tissue destruction situ ablation may stimulate antigen specific cellular immunity engendered inflammatory milieu dendritic cells dcs attracted microenvironment undergo maturation internalizing cellular debris containing tumor antigens exposed damage associated molecular pattern damp mature dcs mediate antigen specific cellular immunity via presentation processed antigens cells immunomodulatory properties exhibited situ ablation could portend future collaboration immunotherapeutic measures review summarized discuss preclinical clinical studies pertinent phenomena stimulation specific anti tumor immunity various ablation modalities immunology related measures used boost response
tunneling nanotubes tnts membranous conduits direct cell cell communication past decade little known composite structure function mechanisms action normal physiologic conditions well disease states tnts attracting increasing interest key role pathogenesis disease including neurodegenerative disorders inflammatory infectious diseases cancer field tnt biology still infancy inroads made determining potential mechanisms function remarkable structures example tnts function critical conduits cellular exchange information thus cancer may play important role critical pathophysiologic features disease including cellular invasion metastasis emergence chemotherapy drug resistance although tnt field still nascent stage propose tnts investigated novel targets drug based treatment cancer diseases
twenty years ago chromosomal abnormalities identifiable genetic causes small fraction congenital heart defects chd today novo inherited genetic abnormality identified pathogenic one third cases refer monogenic causes insofar genetic abnormality readily detectable large effect explains twothirds review considers complex genetic basis combination genetic mutations variants individually may little detectable effect contribute pathogenesis heart defect genes embryo act directly cardiac developmental pathways received attention genes mother establish gestational milieu via pathways related metabolism aging also effect growing body evidence highlights pathogenic significance genetic interactions embryo maternal effects genetic basis investigation chd guided complex genetic model could help estimate risk precisely logically lead means prevention
two dehydrin genes identified cichorium intybus est database among abundant sequences obtained cdna libraries constructed chicory roots grown field conditions full length cdna sequences designated cidhn cidhn long encoded predicted polypeptides amino acids respectively deduced cidhn protein contains segment four lysine rich consensus motifs segments represent typical structure dehydrins cidhn sequence contains two motifs two segments classifying cidhn type dehydrin southern blotting analysis suggested cidhn cidhn single copy genes northern blotting analysis revealed cidhn genes expressed roots leaves seasonal variations transcript accumulation effect cold cidhn cidhn transcript level demonstrated cidhn cidhn promoter analysis revealed presence low temperature responsive aba responsive elements
two non symmetric bispyridine oxime based reactivators acetylcholinesterase enzyme ache labeled carbamoylpyridinium hydroxyiminomethylpyridinium propane dibromide carbamoylpyridinium hydroxyiminomethylpyridinium ene dibromide tested potential inhibit activities human liver microsomal cytochromes cyp oximes potent reactivators organophosphate inhibited ache interaction compounds cyp human liver microsomal preparation detected using difference spectroscopy compounds shown bind cyp enzymes spectral binding constants enzymology studies subsequently performed aimed determining nine important cyp involved drug affected interaction results shown prominent inhibition individual cyp activities either compounds except case cype diagnostic dixon plot revealed acted uncompetitive inhibitor cype inhibition activity however prominent make potent drug interaction likely hence interaction oxime type ache reactivators human liver microsomal cyp enzymes seem prominent clinical importance compounds could safely used respect antidotes low risk drug interactions elsevier ltd rights reserved
two component signal transduction system tcs common mechanism signal transduction exists almost bacterial species putative two component genes sco ecre sco ecre streptomyces coelicolor located vicinity red locus could modulate antibiotic undecylprodigiosin red biosynthesis study mutants ecre knock ecre knock constructed using homologous recombination double crossover red production two mutants decreased dramatically compared wild type strain however production actinorhodin act two mutants changed significantly results suggested ecre ecre participated regulating antibiotic red synthesis northern blotting analysis indicated ecre ecre may regulate biosynthesis red influencing transcription redd redz cell growth therefore ecre ecre specific pair tcs likely regulates red gene cluster positively
type acyl coa diacylglycerol acyltransferase dgat rate limiting enzyme catalyses final step kennedy pathway triacylglycerol biosynthesis study two genes encoding type diacylglycerol acyltransferase zmdgata zmdgatb cloned high oil maize inbred line confirmed southern blotting complete coding sequences obtained comparison genomic dna coding sequences revealed zmdgata zmdgatb comprised exons introns coding region respectively zmdgata zmdgatb shared similar molecular mass isoelectric point transmembrane domains zmdgatb expressed sampled tissues examined using reverse transcription polymerase chain reaction pcr contrast zmdgata expression limited silks tassels seeds different ages suggests two genes complementary relationship zmdgata zmdgatb proteins subsequently found localized endoplasmic reticulum data provides important basis studies functions dgat genes genetic modification oil content composition corn seeds
tyrosine kinase tyk member janus kinase jak family transduces cytokine growth factor signalling analysis tyk loss function revealed important role immunity infection auto immunity auto inflammation tyk deficient patients unravelled high similarity mice men respect cellular signalling functions basic immunology genome wide association studies link tyk several autoimmune inflammatory diseases well carcinogenesis due cytokine signalling functions tyk found essential tumour surveillance lately tyk activating mutants fusion proteins detected patients diagnosed leukaemic diseases suggesting tyk potent oncogene review cell intrinsic extrinsic functions tyk characteristics preventing enabling carcinogenesis addition describe unexpected function kinase inactive tyk tumour rejection authors published elsevier ltd
tyrosine phosphorylation dependent cell signaling represents unique feature multicellular organisms important regulation cell differentiation specialized cell functions multicellular organisms also contain diverse family nadph oxidases noxs closely linked tyrosine kinase based cell signaling regulate tyrosine phosphorylation via reversible oxidation cysteine residues highly conserved within many proteins involved signaling pathway example redox regulated tyrosine kinase signaling involves epidermal growth factor receptor egfr widely studied receptor system diverse functions normal cell biology well pathologies associated oxidative stress cancer purpose graphical redox review highlight recently emerged concepts respect nox dependent regulation important signaling pathway authors published elsevier
uncc member unch family transmembrane receptors functions dependence receptor expression uncc lost markedly reduced large proportion cancers messenger rna level however little information available regarding protein expression uncc relationship uncc protein expression uncc methylation correlation patient clinical features uncc protein expression colorectal cancer study methylation protein expression uncc examined adenomatous polyps colorectal cancers corresponding normal mucosa correlation methylation well protein expression status clinicopathologic features evaluated furthermore relationship methylation protein expression uncc correlation uncc protein expression overall survival analyzed results showed aberrant methylation uncc observed colorectal cancers adenomatous polyps methylation specific polymerase chain reaction results confirmed bisulfite sequencing uncc promoter region uncc methylation significantly higher early tumor node metastasis stage colorectal cancers compared corresponding normal tissues protein expression uncc significantly lower colorectal cancers adenomatous polyps protein expression uncc significantly higher early tumor node metastasis stage colorectal cancers compared advanced tumor node metastasis stage furthermore patients uncc negative expression poorer prognosis uncc positive expression kaplan meier survival analysis univariate multivariate analysis according spearman rank correlation analysis uncc methylation protein expression negatively correlated together results suggest uncc methylation may earlier event development colorectal cancer negatively correlated protein expression uncc may critical role pathogenesis colorectal cancers valuable prognostic factor colorectal cancers patients uncc may identified attractive therapeutic target treatment colorectal cancers studies
understanding predicting whether new drug candidates safe clinic critical hurdle pharmaceutical development relies part absorption distribution metabolism excretion toxicology studies vivo zebrafish relatively new model system drug metabolism toxicity studies offering whole organism screening coupled small size potential high throughput screening toxicity absorption analyses number drugs find zebrafish generally predictive drug toxicity although assay outcomes influenced drug lipophilicity alters drug uptake addition liver microsome assays reveal specific differences metabolism compounds human zebrafish livers likely resulting divergence cytochrome superfamily species reflect human metabolism accurately generated transgenic humanized zebrafish line expresses major human phase detoxifying enzyme cypa liver show humanized line shows elevated metabolism cypa specific substrates compared wild type zebrafish generation first described humanized zebrafish liver suggests approaches enhance accuracy zebrafish model toxicity prediction
understanding biologically relevant structural functional behavior proteins inside living plant cells possible combination structural biology cell biology state art structural biology techniques typically applied molecules isolated native context although experimental conditions easily controlled dealing isolated purified protein serious shortcoming vitro work mimic extremely complex intracellular environment protein exists functions therefore highly desirable investigate proteins natural habitat within live cells major ambition cell nmr aims approach structure function relationship true vivo conditions following delivery labeled proteins cells physiological conditions multidisciplinary approach includes recombinant protein production confocal fluorescence microscopy nuclear magnetic resonance nmr spectroscopy different intracellular protein delivery strategies explore possibility develop cell nmr studies living plant cells provide comprehensive framework set cell nmr identified efficient intracellular introduction isotope labeled proteins major bottleneck based experiments paradigmatic intrinsically disordered proteins idps early response dehydration protein also established subcellular localization erd abiotic stress
unresolved experimental lyme arthritis lox mice associated impaired macrophage phag ocytosis borrelia burgdorferi present study investigated effects lox metabolite phagocytosis burgdorferi bone marrow derived macrophages bmdm lox mice defective uptake killing burgdorferi earliest stages spirochete internali zation bmdm mice deficient ltb high affinity receptor blt also unable efficiently phagocytose burgdorferi addition exogenous ltb augmented phagocytic capability bmdm lox blt mice suggesting low affinity ltb receptor blt might involved blocking blt activity specific antagonist inhibited phagocytosis ltb stimulated blt bmdm demonstrating role blt however lack phagocytic defect blt bmdm suggested compensatory effect contrast hht natural blt specific high affinity ligand rve blt agonist unable boost phagocytosis bmdm either lox blt mice suggesting specific role ltb mediating phagocytosis murine macrophages study demonstrates ltb promotes macrophage phagocytosis bacteria via blt blt fulfil role absence blt
uric acid used test liver disease advent enzymology three old studies criticised uric acid test liver function uric acid end product purine metabolism liver deserved evaluation liver function test serum total bile acids widely accepted reliable liver function test study compared ability serum uric acid concentration assess liver function serum pre prandial bile acids dogs addition due renal excretion uric acid assays also compared renal disease group using control group healthy dogs group dogs congenital vascular liver disease group dogs non vascular parenchymal liver diseases renal disease group ability uric acid pre prandial bile acids compared detect reduced functional hepatic mass overall vascular parenchymal liver disease groups separately sensitivities specificities predictive value parameters calculated test medians uric acid concentration differ significantly groups whereas pre prandial bile acids medians significantly higher liver disease groups compared normal renal disease group dogs sensitivity uric acid detecting liver disease overall specificity uric acid detecting liver disease overall sensitivity specificity uric acid detecting congenital vascular liver disease respectively sensitivity specificity uric acid detecting parenchymal liver disease respectively overall positive negative predictive values uric acid detecting liver disease poor data study indicated uric acid unreliable test liver function dogs suffering renal compromise serum uric acid concentrations may increase abnormal range due renal route excretion
urothelial bladder cancer one first cancers recognized immunogenic since years ago use bacillus calmette guerin shown prevent recurrence since time knowledge immune biology cancer expanded tremendously patients bladder cancer finally new active immunotherapeutic drugs horizon anti programmed cell death programmed cell death ligand therapy shown impressively durable responses urothelial bladder cancer ubc reported response rates warrant improvement outline potential strategies overcome tumor immune resistance herein summarize current models tumor immunology specific focus bladder cancer recognition tumor specific antigens cross presentation cell priming activation trafficking immune cells tumor microenvironment critical steps understand necessary effective antitumor immune response many involved steps important targets therapeutic interventions new immunotherapies developed predictive biomarkers would also important select patients likely respond better understand tumor biology several potential biomarkers reviewed including expression identification cell inflamed non cell inflamed tumors based immune gene expression intrinsic molecular subtyping based luminalthasal cancer genome atlas tcga groups cell receptor sequencing somatic mutational density even within past years current knowledge immune biology exploded highly optimistic future ubc therapy available patients elsevier inc rights reserved
valproic acid vpa simple branched medium chain fatty acid expanding therapeutic applications beyond prime anticonvulsant properties aims resolve underlying basis interference valproate isoleucine degradative pathway shed new light enzymology beta oxidation pathway valproate methods urine organic acids analyzed gas chromatography mass spectrometry vitro studies performed heterologously expressed human methyl hydroxybutyryl coa dehydrogenase mhbd fibroblasts controls patient mhbd deficiency using methyl hydroxybutyryl coa hydroxyvalproyl coa substrates respective enzymatic activities measured using optimized hplc procedures short chain enoyl coa hydratase echs immunoprecipitation human liver homogenate performed hydratase activity measured supernatants hplc using crotonyl coa delta valproyl coa substrates results patients valproate therapy moderately increased urinary excretion isoleucine metabolite methyl hydroxybutyric acid mhbd found convert hydroxyvalproyl coa ketovalproyl coa mhbd activity control fibroblasts comparable using methyl hydroxybutyryl coa hydroxyvalproyl coa substrates fibroblasts patient mhbd deficiency detectable mhbd activity hydroxyvalproyl coa used substrate samples immunoprecipitated crotonase detectable hydratase activity using crotonyl coa delta valproyl coa substrates discussion work demonstrates first time mhbd unique enzyme responsible dehydrogenation hydroxyvalproyl coa furthermore show crotonase major single hydratase involved vpa beta oxidation next role isoleucine catabolism elsevier inc rights reserved
varroa destructor devastating parasite western honeybee apis mellifera light arm race opposing host parasite population dynamics genetic diversity organisms key parameters however life cycle destructor characterized extreme inbreeding due full sibling mating host brood cells present equation reflecting evolution inbreeding clonal system compare predictions empirical data based analysis seven microsatellite markers comparison revealed mites perform essentially incestuous mating beginning brood season however pattern changes development mite infestation despite fact overall level genetic diversity mites remained low season multiple inbred lineages identified mites sampled june response decrease brood availability increase parasite population parallel colonies lineages recombined towards end season mites infest brood cells results suggest ratio number mite per brood cell colony determines genetic structure populations destructor intracolonial population dynamics great relevance selection acaricide resistance destructor chemical treatments occur recombination phase inbreeding greatly enhance fixation resistance alleles colony level elsevier rights reserved
vascular calcification impact calcium accumulation end stage renal diseases normally initiated mitochondria sodium thiosulfate sts effective rescuing mitochondrial function neurovascular complications associated limitation protecting cardiac mitochondria however sts efficacy restoring renal mitochondrial function studied primary focus study wistar rats group administered adenine diet days induce renal failure sts given two regimens sts pre preventive along adenine days sts cur curative day renal failure assessed plasma urinary markers effectiveness treatment assessed oxidative stress dna damage mitochondrial physiology enzymology renal tissue adenine diet caused renal medullary swelling tubular interstitial nephropathy impaired renal function creatinine urea uric acid alp recovered sts treatment renal failure due oxidative stress measured elevated malondialdehyde lowered reduced glutathione levels sts reduced lipid peroxidation significantly elevated antioxidant enzymes improved renal mitochondrial respiratory capacity maintaining hyperpolarized membrane potential restored complex enzyme activities absence renal dna fragmentation supports findings sts protects kidney preserving renal mitochondria experimental adenine induced vascular calcified rats efficacy prominent given induction sts cur group
venous malformations vms characterized ectatic tortuous venous channels decreased perivascular cell coverage recent studies discovered mir plays critical role amounts vascular diseases regulating differentiation phenotype vascular smooth muscle cells vsmcs however potential roles mir vms remain unknown study samples vms without treatment history samples healthy donor skin collected evaluate expression level tgf beta mir alpha sma immunohistochemistry situ hybridization real time polymerase chain reaction pcr subsequently correlations analyzed using spearman rank correlation testin vitro studies performed using human umbilical vein endothelial cells huvecs results showed mir significantly downregulated vms compared normal skin tissues accompanied synchronously decreased tgf beta expression level perivascular alpha sma cell coverage correlation analysis revealed mir expression positively correlated tgf beta expression perivascular alpha sma cell coverage vms addition tgf beta mir alpha sma concurrently increased tissues vms treated bleomycin importantly vitro studies revealed recombinant human tgf beta bleomycin could significantly upregulate tgf beta mir expression huvecs similar increasing tendency summary present study unmasked downregulation mir vms possibly induced tgf beta depression closely correlated disorganized vessels moreover mir may involved sclerotherapy vms possess target potential elsevier rights reserved
vertical integration extensively implemented across medical school curricula widely attempted field biochemistry describe novel curricular innovation near peer learning model used implement vertical integration medical school biochemistry course senior medical students developed facilitated case based small group session first year biochemistry students students surveyed session attitudes biochemistry well effectiveness session prior session students believed biochemistry important understanding basic science medicine understanding clinical medicine becoming good physician session improved students attitudes importance biochemistry clinical medicine session believe understanding biochemistry equally important basic sciences clinical medicine students would like sessions believe senior student facilitators knowledgeable effective teachers facilitators believe improved teaching skills novel combination near peer learning vertical integration biochemistry provided great benefit first year senior medical students serve model institutions international union biochemistry molecular biology
viewing manipulating three dimensional structures molecular graphics software essential tasks researchers students understand functions molecules currently way manipulate molecular object mainly based mouse keyboard control usually difficult tedious learn gesture based touch based interactions increasingly popular interactive software systems suitability handling molecular graphics yet sufficiently explored designed gesture based touch based interaction methods manipulate virtual objects pymol utilizing motion touch sensors mobile device three fundamental viewing controls zooming translation rotation frequently used functions implemented results pilot user study reveal task performances viewing controls using mobile device slightly reduced compared mouse keyboard method however considered suitable oral presentations equally suitable education scenarios school classes overall pymol mcontrol provides alternative way manipulate objects molecular graphic software new user experiences software freely available international union biochemistry molecular biology
viral encephalopathy retinopathy ver otherwise known viral nervous necrosis vnn major devastating threat aquatic animals betanodaviruses isolated least aquatic animal species marine freshwater environments throughout world notable exception south america review main features betanodavirus including diversity distribution transmission modes fish firstly presented existing diagnosis detection methods well different control procedures disease reviewed finally potential selective breeding including conventional genomic selection opportunity obtain resistant commercial populations examined
viruses segmented rna genomes must package correct number segments synthesis infectious virus particles recent studies suggest members reoviridae family segmented double stranded rna genomes achieve challenging task forming rna networks segments prior recruitment assembling capsid albeit direct evidence still lacking investigated capability virus recovery preformed complexes ten rna segments epizootic haemorrhagic disease virus ehdv reoviridae member transcribing exact cdna copies genomic rna segments single vitro reaction followed transfection mammalian cells data obtained confirmed rna complexes generated bluetongue virus another family member formation rna complexes demonstrated sucrose gradient ultracentrifugation rna rna interactions inherent formation rna complexes demonstrated electrophoretic mobility shift assay showed disruption rna complex formation inhibits virus recovery confirming recruitment complete rna networks essential packaging consequently virus recovery efficient reverse genetics system allow understanding evolutionary relationships reoviridae members may also contribute development antiviral molecules
vitamin thiamine essential cofactor several key enzymes carbohydrate metabolism mammals salvage crucial nutrient diet complement deficiency novo synthesis contrast bacteria fungi plants reported plasmodium falciparum possess vitamin biosynthesis pathway plasmodial pathway identified consists three vitamin biosynthetic enzymes hydroxy ethyl methylthiazole thz kinase thim amino hydroxymethyl methylpyrimidine hmp hmp kinase thid thiamine phosphate synthase thie recombinant pfthim pfthid proteins biochemically characterised revealing app values thz hmp furthermore ability pfthie generating vitamin analysed complementation assay thie negative coli mutants three enzymes expressed throughout developmental blood stages shown northern blotting indicates presence vitamin biosynthesis enzymes however cultivation parasite minimal medium showed dependency provision hmp thiamine results demonstrate human malaria parasite falciparum possesses active vitamin biosynthesis depends external provision thiamine precursors
vitamin essential cofactor participates large number biochemical reactions pyridoxal phosphate biosynthesized novo two different pathways dxp dependent pathway pathway also salvaged environment one cofactors whose catabolic pathway comprehensively characterized also known function singlet oxygen scavenger protective effects oxidative stress fungi enzymes utilizing vitamin important targets therapeutic agents review provides concise overview mechanistic enzymology vitamin biosynthesis catabolism article part special issue entitled pyridoxal phosphate enzymology published elsevier
voltage gated sodium channels pore forming transmembrane proteins selectively allow sodium ions flow across plasma membrane according electro chemical gradient thus mediating rising phase action potentials excitable cells playing key roles physiological processes neurotransmission skeletal muscle contraction heart rhythm pain sensation genetic variations nine human genes encoding channels known cause large range diseases affecting nervous cardiac systems understanding molecular effect genetic variations critical elucidating pathologic mechanisms known variations predicting effect newly discovered ones end created web based tool ion channels variants portal compiles variants characterized functionally human sodium channel genes portal describes variants associated least one molecular clinical phenotypic impact total observations extracted different research articles data captured structured annotations using standardized vocabularies ontologies gene ontology ion channel electrophysiology ontology data available scientific community via nextprot https www nextprot org portals navmut
volvariella volvacea difficult store fresh lack low temperature resistance many traditional mutagenic strategies applied order select strains resistant low temperature commercially efficient strains produced order break bottleneck traditional breeding significantly improve low temperature resistance edible fungus volvacea strains resistant low temperature constructed genome shuffling optimum conditions volvacea strain mutation protoplast regeneration fusion determined protoplasts treated ethylmethylsulfonate ems sec ultraviolet irradiation electron beam implantation irradiation separately lethality within favored generating protoplasts used following forward mutation conditions strains volvacea mutated ems electron beam irradiation irradiation obtained mutated protoplasts selected serve shuffling pool based excellent low temperature resistance four rounds genome shuffling low temperature resistance testing three strains high genetic stability screened significantly enhanced fruit body shelf life degrees respectively exceeded respectively compared storage time low temperature resistant strain genome shuffling greatly improved low temperature resistance volvacea shortened course screening required generate desirable strains knowledge first paper apply genome shuffling breeding new varieties mushroom offers new approach breeding edible fungi optimized phenotype international union biochemistry molecular biology inc
fatal canine distemper virus cdv epidemic lions spotted hyaenas serengeti ecosystem caused recent spillover virulent domestic dog strain one well adapted noncanids examine question using sequence data serengeti strains including five complete genomes obtained phylogenetic haplotype network analyses reveal strains noncanids epidemic closely related domestic wild canids noncanid serengeti strains epidemic encoded one novel substitution cdv protein therare amino acid combination two sites positive selection region cdv protein binds slam host cell receptors worldwide noncanid strains america lineage encode cdv canid serengeti strains epidemic coded cdv cdv functional assay cell entry revealed highest performance cdv proteins encoding cells expressing lion slam receptors highest performance proteins encoding typical dog strains worldwide cells expressing dog slam receptors findings consistent epidemic lions hyaenas caused cdv variants better adapted noncanids canids recent spillover dog strain study reveals greater complexity cdv molecular epidemiology multihost environments previously thought
described phylogenetic affiliation development cultures ultrastructural features trypanosome leptodacylus chaquensis pantanal biome brazil inferred phylogeny trypanosome nested anura clade basal aquatic clade trypanosoma separate known species within clade finding enabled describe trypanosoma herthameyeri also infects leptodacylus species pantanal caatinga biomes trypanosoma herthameyeri multiplies small rounded forms clumped together evolving multiple fission forms rosettes epimastigotes released long forms long flagella scarce trypomastigotes glove like forms common stationary phase cultures first time trypanosome amphibian observed field emission scanning electron microscopy revealing cytostome opening well developed flagellar lamella many grooves pumpkin like forms transmission electron microscopy showed highly developed golgi complexes relaxed catenation kdna rich set spongiome tubules regular parallel arrangement flagellar pocket confirmed electron tomography considering basal position phylogenetic tree developmental ultrastructural data herthameyeri valuable evolutionary studies trypanosome architecture cell biology
developed efficient system agrobacterial transformation plum prunus domestica leaf explants using pmi mannose gfp selection system cultivar startovaya transformed using agrobacterium tumefaciens strain cbe carrying vector pnovsgfp leaf explants placed onto nutrient medium containing various concentrations combinations mannose sucrose develop efficient selection system nine independent transgenic lines plum plants obtained regeneration medium containing sucrose mannose highest transformation frequency produced using delayed selection strategy starting days transformation ending regeneration shoots transgenic callus selection transgenic cells monitored gfp fluorescence allowed avoiding formation escapes integration mana gfp transgenes confirmed pcr southern blotting described transformation protocol using positive pmi mannose system alternative selection system production transgenic plum plants without genes antibiotic herbicide resistance use leaf explants enables retention cultivar traits plum plants
evaluated vitro effects galactose thiobarbituric acid reactive substances tba total sulfhydryl content protein carbonyl content activities antioxidant enzymes catalase cat superoxide dismutase sod glutathione peroxidase gsh acetylcholinesterase ache activity cerebral cortex cerebellum hippocampus rats also investigated influence antioxidants alpha tocopherol ascorbic acid glutathione effects elicited galactose parameters tested results showed galactose concentration enhanced tba levels hippocampus cerebral cortex cerebellum rats cerebral cortex galactose concentrations increased tba protein carbonyl content increased cat activity decreased ache activity cerebellum galactose concentrations increased tba sod gsh activities hippocampus galactose concentrations increased tba cat activity decreased gsh data showed pathologically high concentration greater galactose induces lipid peroxidation protein carbonylation alters antioxidant defenses cerebrum also alters cholinesterase activity trolox ascorbic acid glutathione addition prevented majority alterations oxidative stress parameters decrease ache activity caused galactose findings lend support potential therapeutic strategy condition may include use appropriate antioxidants ameliorating damage caused galactose
examined whether tumor necrosis factor alpha tnf alpha promotes postischemic inflammation myocardial injury via activation nuclear factor kappa kappa vivo canine model isoflurane anesthetized dogs underwent closed chest balloon occlusion anterior descending coronary artery minutes followed reperfusion hours dogs randomly received soluble tnf inhibitor etanercept intravenously saline occlusion collateral blood flow risk region size risk measured radioactive microspheres infarct size inf measured triphenyltetrazolium chloride staining inflammation measured tissue mycloperoxidase mpo activity intercellular adhesion molecular icam messenger ribonucleic acid mrna measured northern blotting icam protein expression measured western blotting kappa activation measured nuclear extracts electrophoretlic mobility shift assays inf risk significantly smaller etanercept group saline control group adjusting collateral flow analysis covariance mean reduction inf risk versus mpo activity icam mrna protein expression kappa binding activity significantly reduced etanercept group administration soluble tnf inhibitor reduced kappa activation icam upregulation myocardial injury following ischemia reperfusion tnf appears play significant role vivo genesis postischemic inflammation
previously reported vibrio hollisae produces aerobactin response iron starvation present study identified hollisae atcc aerobactin system cluster consists eight genes hatcdb iucabcd iuta hatcdb genes encode proteins homologous components bacterial atp binding cassette transport systems ferric aerobactin iucabcd iuta orthologs code aerobactin biosynthesis enzymes ferric aerobactin receptor respectively accordance iron regulated expression putative fur box sequences found within respective promoter regions hatc iuca iuta monocistronic iuta transcript detected northern blotting moreover phenotypic comparison wild type strain targeted gene disruptants supported biological functions expected respective operons genes basis homology search arrangement aerobactin gene clusters thus far found vibrio enterobacterial species compared discussed evolutionary point view elsevier sas rights reserved
previously found drosophila melanogaster one deoxyribonucleoside kinase dnk however capable phosphorylate four natural deoxyribonucleosides dnk originally isolated embryonic cell line wanted study expression dnk development embryonic cells adult flies found declining dnk activity development activity adult flies surprisingly extract adult flies exhibited strong inhibitory effect deoxyribonucloside kinase activity dnk inhibitor precipitable ammonium sulfate purified high degree gel filtration indicated analysis since inhibitor eluted gel filtration size kda named tested purified fraction specificity towards various enzymes found mammalian bacterial dnks inhibited whereas effect hexokinase pyruvate kinases acidic phosphatase however tested cyclin dependent kinase found strong inhibitory effect human cdk cycb pombe cdc type cyclin purified fraction superdex inhibited dnk also inhibited two protein kinases degree furthermore testing dna polymerase based assay found exonuclease part dna polymerase klenow polymerase activated
recently identified new family multidomain oxidoreductase redox enzymes micals directly regulate actin cytoskeletal elements necessary morphology motility trajectory cells genetic assays reveal mical necessary sufficient actin organization cellular effects vivo biochemical assays purified mical protein reveal mical utilizes redox activity directly disassemble actin filaments results identify mical proteins novel actin disassembly factors uncover redox signaling mechanism directly regulates actin cytoskeleton results also set stage depth characterization mical enzyme however difficult obtain sufficient amounts highly pure mical protein conduct biochemical structural imaging catalytic high precision studies herein describe means expressing high levels soluble recombinant mical protein bacteria likewise designed new purification strategy enables rapid efficient purification milligram quantities highly pure active mical protein new strategy generating large amounts highly pure active mical protein aid research objectives designed characterize biochemical enzymology structural biology mical effects actin filament dynamics elsevier inc rights reserved
look important issues global nitrogen phosphorus cycle conclude nutrients human metabolism importance global nitrogen cycle minor importance global phosphorus cycle however water pollution control human metabolism extreme importance nitrogen mainly issue coastal waters whereas issue freshwater coastal areas alike generally recognised coastal ecosystems exceedingly important human well time highly endangered recycling issue high importance areas nutrient application low due economic constraints nomix technology urine source separation holds large promise become efficient mainstream technology largest short term potential found densely populated areas coastal areas without existing infrastructure areas nutrient deficiency especially urban areas large nutrient potential believe however technologies time also become competitive europe
report first observation zaprionus indianus gupta mainland france five specimens sexes trapped liquid vinegar bait cap antibes french riviera taxonomic identification performed morphological molecular analysis indianus recognized fig pest invaded american countries could pose economic problems new location since figs also grown european mediterranean areas drosophilid species eppo pest quarantine list spread possible permanent establishment south france thus monitored next years assess possible agricultural damages
sought identify validate novel urinary autophagy transcript signature patients bladder cancer evaluate clinical utility performed initial screening seven autophagy transcript based panel autophagy related protein atg repeat domain phosphoinositide interacting wipi fyve coiled coil domain containing protein fyco microtubule associated protein light chain maplc inducible coiled coil rbcc tachylectin like beta propeller domain tecpr unc like kinase ulk identified based bioinformatics analysis followed sybr green based polymerase chain reaction array validation paired tissue urine samples afterward evaluated expression differentially expressed autophagy transcripts independent validation set reverse transcription quantitative real time polymerase chain reaction urine sediments patients bladder cancer patients benign urological lesions healthy controls age sex matched expression levels atg fyco tecpr ulk paired bladder tissue urine samples significantly lower bladder cancer control group validation set receiver operating characteristic curve analyses demonstrated urinary autophagy transcripts showed high sensitivity specificity distinguishing bladder cancer non bladder cancer patients atg fyco ulk tecpr document validate novel autophagy transcript signature human bladder cancer diagnosis bilharzial non bilharzial types
studied metallothionein nit response manure worm eisenia fetida exposures cadmium zinc cadmium zinc spiked media nit studied protein level dot immunobinding assay dia expression level northern blotting highly accumulated worms whereas body concentration regulated addition would limit accumulation worms exposed low concentrations dry soil exposure mixture high concentrations increased cytosolic nit levels increase would allow worms regulate body concentrations also limit toxicity exposures increased gene expression binding isoform whereas however metals high concentrations exposure medium expression increased several hypotheses proposed explain results best approach estimate metal exposure earthworm species given experiments performed evaluate usefulness nit responses field contaminated soils toxicity assessment using earthworm species elsevier inc rights reserved
tested wild birds poland avian influenza virus aiv took swabs feces samples live birds representing orders bird species mostly orders anseriformes charadriiformes testing characterization various pcr methods pcr positive samples attempted isolate subtype virus rna aiv detected confidence interval birds represented mallards anas platyrhynchos mute swans cygnus olor common teals anas crecca three black headed gulls chroicocephalus ridibundus one common coot fulica atra one garganey spatula querquedula one unidentified bird species overall prevalence aiv detection mallards mute swans frequently sampled species respectively difference statistically significant hemagglutinin subtypes identified including low pathogenic aiv subtypes mallards common teals harbored greatest diversity subtypes observed seasonality viral detection mallards higher aiv prevalence late summer autumn winter spring addition two peaks aiv prevalence summer august autumn november demonstrated mallards prevalence aiv mute swans show statistically significant seasonal patterns
used pcr based methods clone sequence four previously unidentified cellulase cdnas cbhi cbhi cbhii egii cbhi cbhi cbhii consist respectively encode amino acids respectively egii consists encoding amino acids belongs family glycosyl hydrolases cbhi cbhii egii modular structure catalytic domain cellulose binding domain cbd located terminus cbhi egii terminus cbhii cbhi shows high homology cbhi lacks cbd northern blotting revealed cbhi cbhi cbhii coordinately expressed various stages mushroom developmental cycle substrate colonization mature fruit body although number cbhi transcripts much smaller egii expression detectable substrate colonization phase transcription levels increased fruit body morphogenesis progressed
whether specific cell clones present tumor infiltrating lymphocytes tils bcc unknown employed deep sequencing mrna coding cell receptor tcr chains characterize repertoire tils bcc gene usage cdr length computed determine clonality tcr degree overlap tcr repertoires skin resident cells tils found high diversity tcr repertoire bcc control skin random gene usage similar cdr length distribution lack tcr repertoire restriction indicates absence tumor specific til clones bcc
therapies targeting inhibitory immune checkpoint receptors ctla shown remarkable success many cancers patients benefit therapies catalyzed enormous interest targeting immune checkpoint receptors regard tigit recently entered limelight novel immune checkpoint receptor targets tigit together stimulatory receptor form pathway analogous ctla pathway shared ligands differential receptor ligand affinities fine tune immune response although roles tigit immune checkpoint receptors cell natural killer cell biology beginning uncovered accumulating data support targeting receptors improving anti tumor immune responses clear understanding immune cell populations regulated tigit key design immunotherapies target receptors combination existing immune checkpoint blockade therapies
working living severe environment internal pressure changes functional garments resistance clothing thermal insulation individual lead obviously changes workload heart rate metabolic rate working extreme circumstances dressing pressure garments make workload increased significantly limit people ability accomplish tasks reducing efficiency activity paper mainly report study relationship different upper limb workloads metabolic rate subjects dressing undressed pressures specially focus relationship heart rate metabolic rate clothes main conclusions paper wearing different garments correspondence heart rate metabolic rate far liquid cooling garment lcg effective garment human metabolism among clothes research pressures inside clothes increased workload well metabolic rate
drug resistance common vaccine resistance rare drugs vaccines impose substantial pressure pathogen populations evolve resistance indeed drug resistance typically emerges soon introduction drug vaccine resistance rarely emerged using well established principles population genetics evolutionary ecology argue two key differences vaccines drugs explain vaccines far proved robust evolution drugs first vaccines tend work prophylactically drugs tend work therapeutically second vaccines tend induce immune responses multiple targets pathogen drugs tend target consequently pathogen populations generate less variation vaccine resistance drug resistance selection fewer opportunities act variation vaccine resistance evolved generalities violated careful forethought may possible identify vaccines risk failure even introduced
wild animals may play important role transmission maintenance toxoplasma gondii environment purpose present study isolate genotype gondii free ranging crab eating fox cerdocyon thous linnaeus crab eating fox critical health condition attended veterinary hospital recife pernambuco state brazil animal died despite emergency treatment brain collected aseptically destined mouse bioassay one isolate gondii obtained polymerase chain reaction restriction fragment length polymorphism pcr rflp used assess genetic variability markers sag sag altsag sag btub gra apico murine model used assess virulence isolate using pcr rflp genotype toxodb identified considered atypical strain isolate classified avirulent murine model first study report gondii infection crab eating fox elsevier rights reserved
development nanotechnology understanding intermolecular interactions single molecule level atomic force spectroscopy afm played important role molecular biology biomedical science recent years research suggested presence metal cations important regulator processes misfolding aggregation amyloid beta protein beta may important etiological factor alzheimer disease however knowledge principle interactions beta metal cations single molecule level still poor understood paper amyloid beta protein beta fabricated substrate mixed thiol modified gold nanoparticles using self assembled monolayer method adhesion force longitudinal direction metal cations beta investigated afm role metal ions beta aggregation discussed perspective single molecular force force results showed specific adhesion force nonspecific force single beta beta pair control experiment calculated respectively however single beta beta pair presence increased dramatically successively indicated unbinding beta proteins accelerated presence metal cations imaging results showed substoichiometric copper cations accelerate formation fibrils within days combined atomic force spectroscopy imaging analysis indicate metal cations play role promoting aggregating behavior beta
increasing use real time pcr techniques leptospira isolation mostly abandoned diagnosis human leptospirosis however great value collecting leptospira isolates better understand epidemiology complex zoonosis provide researchers different isolates study successfully isolated different leptospira strains bact alert aerobic blood culture bottles suggest privileged biological material offers opportunity isolate leptospires elsevier inc rights reserved
world experts different disciplines molecular biology macroecology recognize value cave ecosystems ideal ecological evolutionary laboratories among subterranean taxa spiders stand intriguing model organisms ecological role top predators unique adaptations hypogean medium sensitivity anthropogenic disturbance description first eyeless spider stalita taenaria array papers subterranean spider biology ecology evolution published comprehensive review topics still lacking provide general overview spider families recorded hypogean habitats worldwide review different adaptations hypogean spiders subterranean life summarize information gathered far origin population structure ecology conservation status finally point limits knowledge currently regarding hypogean spiders aiming stimulate future research
xanthine oxidase catalyses hypoxanthine xanthine uric acid human metabolism overproduction uric acid lead hyperuricemia finally cause gout diseases luteolin one major components celery green peppers inhibitory activity interaction mechanism evaluated multispectroscopic methods coupled molecular simulation found luteolin reversibly inhibited competitive manner inhibition constant value mol luteolin could bind single binding site binding driven mainly hydrophobic interactions analysis synchronous fluorescence circular dichroism spectra demonstrated microenvironment secondary structure altered upon interaction luteolin molecular docking results revealed luteolin actually interacted primary amino acid residues located within active site pocket elsevier ltd rights reserved
xylitol five carbon sugar alcohol occurs widely nature also normal intermediate human metabolism alternative sweetener recommended diabetics prevention dental caries xylitol currently produced chemically large scale microbial production lately becoming attractive since downstream processing expected cheaper among microorganisms yeasts best xylitol producers particularly belonging genus candida key enzymes xylitol production yeasts xylose reductase using either nadh nadph reduces xylose xylitol predominantly nad linked xylitol dehydrogenase reoxidizes xylitol xylulose xylitol accumulation yeasts sensitive environmental conditions nutrition temperature inoculum substrate aeration last two critical yeast growth fermentation hemicellulosic hydrolysates derived hardwood particularly agricultural residues sugar cane bagasse corn cabs wheat rice straw used feedstock xylitol production due presence inhibitory components hydrolysates treated prior microbial utilization investigated types processes batch ones although fed batch immobilized systems characterized highest yields productivities apart naturally occurring yeasts recombinant strains saccharomyces cerevisiae free immobilized form also investigated xylitol production
background high mobility group box hmgb non histone protein plays important role autoimmune diseases however significance hmgb pathogenesis autoimmune thyroiditis reported purpose study explore whether hmgb participates pathogenesis autoimmune thyroiditis whether glycyrrhizin direct inhibitor hmgb attenuates severity thyroid inflammatory infiltration murine model autoimmune thyroiditis methods total male nod mice randomly divided control iodine supplement nai group four weeks age control group fed regular water whereas nai group supplied sodium iodine water another male nod mice also randomized three groups eight mice per group follows control nai treatment iodine supplementation nai nod mice fed sodium iodide water eight weeks enhance autoimmune thyroiditis iodine treatment mice received intraperitoneal injections four weeks severity lymphocytic infiltration thyroid gland measured histopathological studies serum levels hmgb tumor necrosis factor alpha interleukin beta thyroglobulin antibody titers measured using enzyme linked immunosorbent assay hmgb expression measured immunohistochemical staining real time polymerase chain reaction tlr hmgb myd nuclear transcription factor kappa measured western blot results mrna expression hmgb significantly higher weeks nai group control group serum levels thyroglobulin antibodies hmgb tumor necrosis factor alpha beta significantly increased nai group dramatically attenuated injection prevalence thyroiditis infiltration lymphocytes significantly decreased nai group administration also significantly reduced protein expression tlr myd hmgb nuclear transcription factor thyroid gland attenuated severity thyroiditis conclusion hmgb may play crucial role autoimmune thyroiditis causing inflammatory infiltration thus increasing severity autoimmune thyroiditis effectively attenuated thyroiditis iodine induced nod mice via molecular mechanism related inhibition tlr hmgb signaling
studied human vivo metabolism elimination kinetics alpha pinene alpha natural monoterpene commonly occurs environment four volunteers exposed single oral dose alpha subject provided one pre exposure subsequently post exposure urine samples administration additionally blood samples drawn hourly two volunteers analysis parent compound blood performed headspace procedure whereas proposed alpha metabolites myrtenol myr cis trans verbenol cver tver quantified blood urine using pci unknown metabolites investigated using pci full scan analyses urinary concentration metabolites reached maxima exposure afterwards declined pre exposure levels within observation period elimination half lives myr cver tver total eliminated amounts corresponded myr cver tver orally applied dose pci full scan analyses identified three novel metabolites one conforms myrtenic acid myra analysis myra urine showed maximum elimination alpha ingestion elimination half life share oral dose study revealed human vivo metabolism alpha proceeds fast elimination metabolites takes places rapidly metabolism alpha dominated extensive oxidation reactions methyl side chains yielding carboxylic acid structures well allylic oxidation cyclohexenyl backbone whereas predicted products double bond oxidation detected
background number mosquito vectors bite rest outdoors contributes sustained residual malaria transmission endemic areas spatial repellents thought create protective bubble within mosquito bites reduced may ideal outdoor use study builds previous studies proved efficacy transfluthrin treated hessian strips outdoor biting mosquitoes goal study modify strips practical attractive acceptable transfluthrin treated sisal hessian emanators confer protection potential infectious bites people use bed nets especially early evening outdoors study conducted kilombero valley ulanga district south eastern tanzania results protective efficacy hand crafted transfluthrin treated sisal decorative baskets hessian wall decorations early evening outdoor biting malaria vectors measured human landing catches hlc outdoor bars peak outdoor mosquito biting activity treated baskets wall decorations reduced bites anopheles arabiensis mosquitoes relative rate confidence interval respectively addition significantly reduced exposure outdoor bites culex spp respectively conclusion locally hand crafted transfluthrin treated sisal decorative baskets hessian wall decorations readily acceptable confer protection outdoor biting malaria vectors early evening outdoors people resting verandas porches outdoor social places bars restaurants additional research help support use items complementary interventions expand protection communities currently experiencing outdoor transmission mosquito borne pathogens
group secreted phospholipase spla plays important physiological roles gastrointestinal tract immune sperm cells involved several types inflammatory diseases secreted either mature enzyme mixture proenzyme basic amino acid propeptide mature enzyme role propeptide repression spla activity studied extensively using liposomes micelles model interfaces substrates however always suitable detecting fine tuning lipolytic enzymes present study monolayer technique used compare pla activity recombinant mouse spla mgx pro form promgx monomolecular films dilauroyl phosphatidyl ethanolamine dlpe choline dlpc glycerol dlpg pla activity substrate specificity mgx approximate found surface pressure dependent mgx displayed high activity dlpe dlpg dlpc monolayers surface pressures corresponding lateral pressure biological membranes overall propeptide impaired enzyme activity particularly dlpe whatever surface pressure however conditions could found propeptide little effects repression pla activity particular promgx mgx similar activities dlpg surface pressure findings show promgx potentially active depending presentation substrate lipid packing one exclude activity physiological context structural model promgx built investigate propeptide controls activity spla model shows propeptide located within interfacial binding site face could disrupt interfacial binding enzyme access active site steric hindrance elsevier masson sas rights reserved
sirtuins sirts family enzymes able catalyze deacetylation acetyl lysines histone non histone substrates inhibition sirts catalytic activity recently reported literature beneficial human diseases promising applications cancer therapy enzymatic neurodegeneration combining structure based virtual screening specs database cell based assays identified benzylidene hydantoin new scaffold inhibition sirt catalytic activity compound specs active low range sirt showed optimal physicochemical properties passive absorption well relatively low cytotoxicity vitro studies revealed noncompetitive mixed type kinetics toward acetyl lysine substrates nad respectively nonselective profile sirt inhibition binding mode consistent experimental evidence proposed molecular modeling additionally levels acetyl shown increased hela cells treated taken together results encourage investigation benzylidene hydantoin derivatives sirt related therapeutic effects elsevier rights reserved
perform pathogenic pathological investigations explosive epidemics hyriopsis cumingii lea hunan province china isolated pathogenic bacteria naturally infected hyriopsis cumingii lea strain artificial infected normal hyriopsis cumingii lea axe foot injection method strain identified according conventional bacteriological isolation identification molecular biology methods pathological changes caused bacteria diseased mussel tissues observed according morphological culture characteristics physiological biochemical tests rdna molecular identification strain shares sequence identity type strain aeromonas veronii veronii results antibiotic susceptibility tests showed among drugs veronii highly sensitive drugs moderately sensitive drugs showed drug resistance left drugs macroscopical lesions pathological changes cytopathology summarized pathogenic bacteria isolated hyriopsis cumingii lea affected explosive epidemic disease identified veronii strain caused multi organ lesions function failure corresponding organs hyriopsis cumingii leal resulting gradually decreased disappeared normal physiological metabolism eventually death
method consecutive cryosections collected enable microscopy applications tissue histology enrichment rna gene expression using adjacent regions single mouse skeletal muscle typically challenging achieve adequate homogenization small skeletal muscle samples buffer volumes may low efficient grinding applications yet without sufficient mechanical disruption dense tissue architecture muscle limits penetration buffer reagents ultimately causing low rna yield following protocol reported sections collected pooled allowing cryosectioning subsequent needle homogenization mechanically disrupt muscle increasing surface area exposed buffer penetration primary limitations technique requires cryostat relatively low throughput however high quality rna obtained small samples pooled muscle cryosections making method accessible many different skeletal muscles tissues furthermore technique enables matched analyses tissue histopathology gene expression adjacent regions single skeletal muscle measurements directly compared across applications reduce experimental uncertainty reduce replicative animal experiments necessary source small tissue multiple applications
background objectiveno previous study directly compared levels matrix metalloproteinases mmps tissue inhibitor metalloproteinases timps smokers individuals diabetes mellitus periodontitis therefore aim study evaluate gene expression mmp mmp mmp mmp timp timp tissues chronic periodontitis chp smokers individuals type material methodsgingival biopsies harvested non smokers non diabetic individuals chp chp group non diabetic smokers cigarettes per day least past years chp schp group non smoking individuals type diabetes glycated hemoglobin levels chp dmchp group tissue levels mrna mmp mmp mmp mmp timp timp evaluated quantitative real time polymerase chain reaction resultsthe mmp expression lowest chp group dmchp group presented increased mrna levels mmp mmp compared schp group mmp expression mmp timp mmp timp mmp timp mmp timp mmp timp mmp timp ratios higher dmchp group chp schp groups dmchp group presented lower mrna levels timp chp group mmp timp ratio highest schp group conclusionuncontrolled type upregulates ratio mmp timps sites chp smoking may contribute greater extracellular matrix degradation periodontal breakdown related periodontitis
study used allozyme analyses evaluate potential impacts ecological restoration treatments genetic diversity ponderosa pine pinus ponderosa var scopulorum populations within fort valley experimental forest near flagstaff allele frequencies varied among pre settlement clumps trees closely related within clumps clumpy spatial stand structure typical reference conditions thus represents genetic neighborhoods suggests restoration clumpy versus evenly dispersed trees naturally regenerating stands protect evolutionary genetic patterns compared pre settlement populations post settlement trees slightly greater heterozygosity allelic richness allele frequencies varied two age groups genetic differences could resulted different selective conditions two age groups became established genetic diversity populations created using different selection criteria residual post settlement trees vary simulated removal post settlement trees decreased allelic richness maintaining clumps created post settlement populations higher tree densities across landscape would effective conserving allelic richness overall results study indicate use genetic structure diversity help guide restoration treatments help ensure adaptive potential conserved
phalaenopsis orchid phal orchid visually attractive important economic floriculture species phal orchids many unique biological features however investigation features validation biological functions limited due lack efficient transformation method developed heritable efficient agrobacterium mediated transformation using protocorms derived tetraploid diploid phal orchids dna vector construct containing egfp driven ubiquitin promoter subjected transformation approximate transformation rate achieved genomic pcr confirmed hygromycin selection marker hptii gene target gene egfp integrated orchid genome southern blotting indicated low dna insertion number orchid genome transformants western blot confirmed expression egfp protein transgenic orchids furthermore gfp signal detected transgenic orchids microscopy backcrossing pollinia transgenic plants four different phal orchid varieties progenies showed hygromycin resistance surviving seedlings hptii positive pcr expressed gfp protein shown western blot study demonstrated stable transformation system generated phal orchids useful transformation protocol enables functional genomics studies molecular breeding
objective phagocyte function neutrophil granulocytes monocytes decreased healthy pregnancy decreased preeclampsia cause declined function unknown decreased phagocyte function lead higher infection rate healthy pregnancy may also responsible increased susceptibility infections high trophoblast concentration preeclampsia aim study examine phagocyte function neutrophil granulocytes monocytes methods monocytes neutrophil granulocytes separated peripheral circulation six nonpregnant patients incubated plasma samples six healthy pregnant six preeclamptic pregnant six nonpregnant patients cells marked evaluated phagocytosis index immunofluorescent microscope phagocyting zymosan molecules results phagocyte function neutrophils well monocytes nonpregnant patients decreased significantly cells incubated plasma samples healthy pregnant patients decreased incubated plasma samples preeclamptic pregnant women conclusion decreased phagocyte function neutrophil granulocytes monocytes healthy pregnancy decreased phagocyte function preeclampsia caused factor maternal circulation
genome rice blast fungus magnaporthe oryzae codes two proteins terminal dioxygenase dox terminal cytochrome cyp domains respectively one mgg confirmed linoleate diol synthase prokaryotic expression recombinant protein mgg possessed prominent dox epoxy alcohol synthase eas activities enzyme dox eas transformed sequentially hydroperoxy octadecadienoic acid hpode epoxy hydroxy octadecenoic acid end product oxygenation occurred retention pro hydrogen suggesting antarafacial hydrogen abstraction oxygenation experiments gas confirmed epoxy alcohol formed hpode likely heterolytic cleavage dioxygen bond formation compound subsequent intramolecular epoxidation double bond site directed mutagenesis demonstrated cysteinyl heme ligand domain required eas activity replacement asn val conserved asnglnxaagln sequence revealed asn supported formation epoxy alcohol dox eas first member novel subfamily dox cyp fusion proteins devastating plant pathogens
cellular membranes display diversity functions conferred unique composition organization proteins lipids one important aspect lipid organization asymmetric distribution phospholipids pls across plasma membrane unequal distribution key pls cytofacial exofacial leaflets bilayer creates physical surface tension used bend membrane like chemical gradient used transduce biochemical signals flippases type type atpase atpase family principle transporters used set repair gradient asymmetric organization membranes encoded substrate specificity enzymes thus understanding mechanisms atpase substrate specificity help reveal role membrane organization cell biology decoding structural determinants substrate specificity provides investigators opportunity mutationally tune specificity explore role particular substrates atpase cellular functions work reviews role atpases membrane biology presents current understanding atpase substrate specificity discusses fundamental aspects atpase enzymology may used enhance knowledge cellular membrane biology
scope various biological effects postulated human milk oligosaccharides hmo deduced vitro animal epidemiological studies little known metabolic fate vivo breast fed infant presented methods results human milk infant urine feces collected ten mother child pairs analyzed maldi tof accompanied high performance anion exchange chromatography pulsed amperometric detection previously detected intact small complex hmo infant urine absorbed gut verified via intrinsic labeling current work reveals presence novel hmo metabolites urine feces breast fed infants novel metabolites identified acetylated hmos hmo like structures produced infants gut microbiota finding secretor lewis specific hmo feces urine infants fed nonsecretor lewis negative milk suggested correspondent modification infant conclusion study reveals new insights metabolism neutral hmo exclusively breast fed infants provides indications multiple factors influencing hmo metabolism functions considered future vivo investigations
asn hnh proteins common family small nucleic acid binding proteins generally associated endonuclease activity found kingdoms life although hnh endonucleases mesophiles widely investigated biochemical functions hnh endonucleases thermophilic bacteriophages remain unknown characterized biochemical properties thermostable hnh endonuclease deep sea thermophilic bacteriophage gve recombinant gve hnh endonuclease exhibited non specific cleavage activity high temperature optimal temperature gve hnh endonuclease cleaving dna degrees enzyme retained dna cleavage activity even heating degrees min suggesting enzyme thermostable endonuclease gve hnh endonuclease cleaved dna wide spectrum ranging optimal enzyme activity furthermore gve hnh endonuclease activity dependent divalent metal ion enzyme inactive presence gve hnh endonuclease displayed cleavage activity varied efficiency gve hnh endonuclease activity inhibited nacl study provides basis determining role endonuclease life cycle bacteriophage gve suggests potential application enzyme molecular biology biotechnology
shown vitro specific dietary fibers contribute immunity studies vivo conclusive investigated degree polymerization dependent effects beta fructans immunity via microbiota dependent independent effects end conventional germ free mice received short long chain beta fructan days immune cell populations spleen mesenteric lymph nodes mlns peyer patches pps analyzed flow cytometry genome wide gene expression ileum measured microarray gut microbiota composition analyzed rrna sequencing fecal samples found beta fructans modulated immunity microbiota microbiota independent effects moreover effects dependent chain length beta fructans type polymer short long chain beta fructans enhanced helper cells pps whereas short chain beta fructans increased regulatory cells cdb dendritic cells dcs mln common feature short long chain beta fructan treatment enhanced alpha fucosyltransferase expression dependent genes ileum conventional mice effects associated shifts gut microbiota composition altered production short chain fatty acids short long chain beta fructans also induced immune effects germ free animals demonstrating direct effect independent gut microbiota also effects dependent chain length beta fructans short chain beta fructan induced lower expression cdb dcs pps whereas long chain beta fructan specifically modulated cell responses germ free mice conclusion support immunity determined chemical structure beta fructans partially microbiota independent
describe low cost disposable indium tin oxide ito chip modified multi walled carbon nanotubes mwnts covered filter paper capable sensitively detecting dihydronicotinamide adenine dinucleotide nadh response nadh occurs relatively low potential agcl interfered ascorbic acid influence electrode area amount assembled mwnts analytical signals studied optimized experimental conditions amperometric response nadh linear concentration range detection limit chronoamperometry performed order study electron transfer kinetics nadh average diffusion coefficients apparent rate constants determined perception approach provides effective way quantify nadh therefore large potential field nadh related diagnostics enzymology
porcine transmissible gastroenteritis virus tgev pathogenic coronavirus responsible high diarrhoea associated morbidity mortality suckling piglets analysed tgev orf gene using nested polymerase chain reaction identified orfa deletion three field strains tgev collected piglets china eight tgev orf sequences obtained study phylogenetic tree analysis orf showed eight tgev orf genes belonged miller cluster lnct mzl closely correlated miller correlated miller results thus indicate existence miller well purdue cluster chinese field strains tgev furthermore found first evidence large deletion orf resulting loss orfa previously reported porcine respiratory coronavirus three field strains lnct mzl tgev results present study thus provide important information regarding underlying evolution mechanisms coronaviruses
background itraconazole proved therapeutically effective variety human cancers study assessed effect itraconazole hedgehog pathway proliferation human gastric cancer cells methods cck assay colony formation assay used assess effects itraconazole proliferation gastric cancer cells expression signaling components gastric cancer cells treated itraconazole evaluated reverse transcription polymerase chain reaction immunoblotting dual luciferase assay tumor xenograft models used assess inhibitory effect itraconazole proliferation gastric cancer cells vivo results itraconazole could remarkably inhibit proliferation gastric cancer cells combination itraconazole significantly reduced proliferation rate cancer cells furthermore itraconazole could regulate transition induce apoptosis gastric cancer cells signaling abnormally activated human gastric cancer samples vitro studies showed expression glioma associated zinc finger transcription factor gli decreased transcriptional translational levels treatment itraconazole dual luciferase assay also indicated itraconazole could inhibit transcription gli vivo studies demonstrated monotherapy itraconazole oral administration could inhibit growth xenografts itraconazole could significantly enhance antitumor efficacy chemotherapeutic agent conclusions signaling activated gastric tumor itraconazole inhibit growth gastric cancer cells inhibiting gli expression
warburg effect describes phenomenon cancer cells obtain energy glycolysis even normoxic sufficient conditions tumor tissues generally exposed hypoxia owing inefficient aberrant vasculature cancer cells multiple molecular mechanisms adapt stress conditions reprogramming cellular metabolism hypoxia inducible factors major transcription factors induced cancer cells response hypoxia contribute metabolic changes addition cancer cells within hypoxic tumor areas reduced access serum components nutrients lipids however effect serum factor deprivation cancer cell biology context tumor hypoxia fully understood cancer cells lipid rich normoxia hypoxia leading increased generation cellular organelle lipid droplet recent years mediated stress response mechanisms cancer cells revealed review focuses production functions lds various types cancer cells relation associated cellular environment factors including tissue oxygenation status metabolic mechanisms information contribute current understanding cancer cells adapt diverse tumor environments promote survival
discovery characterization micrornas mirnas families short rnas led rapid expansion research directed elucidating expression patterns regulatory functions describe convenient sensitive straightforward method detect quantitate specific mirna levels unfractionated total rna samples method based splinted ligation require specialized equipment amplification step significantly faster sensitive northern blotting demonstrate method used detect various classes small regulatory rnas different organisms
avian leukosis virus subgroup alv oncogenic virus causing hemangiomas myeloid tumors chickens interleukin multifunctional pro inflammatory interleukin involved many types cancer previously demonstrated expression induced following alv infection chickens aim study characterize mechanism alv induces expression role tumor development results demonstrate alv infection increases expression chicken splenocytes peripheral blood lymphocytes vascular endothelial cells production induced alv envelope protein capsid protein via pik kappa mediated signaling turn induced expression vascular endothelial growth factor vegf receptor vegfr vascular endothelial cells embryonic vascular tissues suppression using sirna inhibited alv induced vegf vegfr expression vascular endothelial cells indicating alv induced vegf vegfr expression mediated vegf vegfr important factors oncogenesis findings suggest alv hijacks promote tumorigenesis indicate could potentially serve therapeutic target alv infections
background mda receptor belongs type cytokine receptor family two heterodimeric receptors mda receptor expression liver cancer cell lines yet described information may helpful clinical gene therapy methods normal skin total rna template cdna sequences amplified pcr total rna extracted cultured liver cancer cell lines normal liver cell line detected northern blotting expression mda receptors analyzed results plc prf smmc expressed bel hepb hepg plc prf expressed ilr hepg plc prf expressed hepg expressed receptor complex plc prf completely expressed heterodimeric receptors huh qgy wrl express receptor conclusion complete mda receptors seldom expressed liver cancer cell lines
analyses fatty acids dorsal muscle acipenser naccarii baerii sturgeon hybrid carried data compared reported literature sturgeons reared human consumption hybrid would seem great nutritional interest flesh beneficial human health cultured sturgeons fact level polyunsaturated fatty acids pufas high similar monounsaturated fatty acids moreover pufas pufas ratio noticeably higher hybrid cultured sturgeon species also high contents epa dha two important essential fatty acids human health linolenic acid metabolic precursor pufas important also human metabolism naccarii baerii hybrid found higher values sturgeon species cultured commercial purposes elsevier ltd rights reserved
knowledge protein folding profound impact understanding heterogeneity molecular function proteins facilitating drug design predicting structure fold protein key problem molecular biology determination fold protein mainly relies molecular experimental methods development next generation sequencing techniques discovery new protein sequences rapidly increasing great number proteins use experimental techniques determine protein folding extremely difficult techniques time consuming expensive thus developing computational prediction methods automatically rapidly accurately classify unknown protein sequences specific fold categories urgently needed computational recognition protein folds recent research hotspot bioinformatics computational biology many computational efforts made generating variety computational prediction methods review conduct comprehensive survey recent computational methods especially machine learning based methods protein fold recognition review anticipated assist researchers pursuit systematically understand computational recognition protein folds
objectives objectives study identify interrelations matrix metalloproteinase mmp mmp levels clinical variables patients aortic root ascending aortic aneurysms describe comorbidities possible biasing factors widely discussed correlation serum mmp levels aortic diameter methods serum mmp mmp levels quantified consecutive patients ascending aortic aortic root aneurysms heart center university freiburg may january influence comorbidities medication serum mmp mmp levels studied took account ascending aortic diameter aad aortic valve configuration hypertension age hyperlipidaemia factors possibly altering serum mmp levels relation serum mmp levels aad examined correlation test based ranks results serum mmp levels aad correlated positively correlation increased patients without hyperlipidaemia spearman rho patients without hyperlipidaemia rho patients serum mmp levels correlate aad showed greater variation serum mmp levels significantly associated hyperlipidaemia conclusions distinct correlation patterns patients without hyperlipidaemia considered defining potential mmp biomarker future studies relation mmp hyperlipidaemia investigated
autophagy highly conserved catabolic process whereby unwanted cytoplasmic contents enclosed double membrane autophagosomes delivered lysosomes degradation responsible recycling nutrients cellular components thus playing pivotal role maintaining cellular homeostasis well cell survival stress conditions perturbations autophagy implicated multiple diseases cancers neuro degeneration diseases recent studies demonstrate autophagy may participate almost every step immune responses including pathogen recognition antigen processing presentation immune cell development function immunoregulation pathogenesis autoimmune diseases multiple sclerosis crohn disease reported associated dysregulated autophagy systemic lupus erythematosus sle chronic potentially fatal autoimmune disease characterized dysregulation immune cells production autoantibodies cause widespread tissue organ damage pathogenesis sle remains unclear several single nucleotide polymorphisms snps autophagy related gene atg linked sle susceptibility lines evidence animal model cell biology immunology genetics studies show autophagy contributes occurrence development severity sle elsevier rights reserved
popular view plant mitochondrial genome evolves slowly sequence recently challenged extraordinarily high substitution rates mtdna documented mainly several angiosperm genera high substitution rate acceleration accompanied great length variation rarely reported plant mitochondrial genes studied evolution mitochondrial rps gene encodes ribosomal small subunit protein found dramatically high variation length sequence exon region conifer sequence comparison cdna genomic dna showed rna editing sites conifer rps gene southern blotting analyses total dna mtdna together real time pcr analysis showed rps exists single mitochondrial locus gymnosperms likely conifer rps gene experienced retroprocessing integration cdna mitochondrial genome followed evolutionary acceleration due intron loss addition phylogenetic analysis rps supports sister relationship conifers gnetales particular monophyly conifer strongly supported shared loss two rps introns results also indicate mitochondrial gene tree would affected topology edited paralogs analyzed together genomic sequences elsevier inc rights reserved
background aims hepcidin liver produced hormone regulates systemic iron homeostasis hepcidin expression stimulated upon iron overload inflammation iron deficiency anemia tissue hypoxia negative regulators investigated involvement oxoglutarate dependent oxygenases hif transcription factors hypoxic suppression hepcidin methods northern blotting analysis real time pcr used determine hepcidin mrna levels hepatoma cells hepcidin promoter activity measured using huh cells transfected suitable reporter constructs various conditions results treatment human cultured hepatoma cells hypoxia known inhibitors oxoglutarate dependent oxygenases iron chelator desferrioxamine cobalt oxoglutarate analogue dimethyl oxalylglycine significantly reduced hepcidin mrna levels regulated gene promoter activity effect dependent hres known putative response elements hepcidin promoter observed even interleukin treatment conclusions oxoglutarate dependent oxygenases important maintain high hepcidin mrna expression hif independent manner suggest modulation oxygenase activity may therapeutic value iron related disorders european association study liver published elsevier rights reserved
objective investigate effect atorvastatin serum oxidative stress terminal brain natriuretic peptide expression rats methods total healthy male rats randomly divided sham group group saline ischemia reperfusion group group saline atorvastatin group group atorvastatin atorvastatin amino arginine group group atorvastatin amino arginine myocardial isehemia reperfusion rat model established days gavage amino arginine given tail vein injection min ischemia reperfusion enzymology indicators creatine kinase lactate dehydrogenase oxidative stress parameters nitric oxide malondialdehyde mda total superoxide dismutase tsod terminal pro brain natriuretic peptide probnp expression detected immunohistochemistry results ldh levels group significantly lower three groups group highest significant difference group group mda levels group significantly higher three groups lowest group followed group difference among groups significantly tsod levels group lowest level group highest followed group difference among groups significant probnp level group significantly higher three groups lowest group followed group difference among groups significant conclusions atorvastatin protective effect myocardial injury myocardial ischemia reperfusion rats increase synthesis decrease mda content increase serum tsod activity oxidative stress effect meanwhile protect myocardial cells reduce myocardial injury
human chimeric mice pxb mice humanized liver constructed transplantation human hepatocytes evaluated experimental model predicting human drug metabolism metabolism zaleplon pxb mice compared rat chimeric mice pxb mice constructed transplantation rat hepatocytes zaleplon metabolized oxo zaleplon aldehyde oxidase desethyl zaleplon cytochrome cypa rat human liver preparations liver fraction pxb mice metabolized zaleplon oxo zaleplon desethylzaleplon similar amounts however liver fractions pxb control urokinase type plasminogen activator transgenic severe combined immunodeficient mice predominantly metabolized zaleplon desethyl zaleplon oxo zaleplon detected minor metabolite oxidase activity pxb mouse liver cytosol toward zaleplon fold higher pxb control mice contrast activities desethyl zaleplon formation similar liver microsomes mice well rat human liver microsomes vivo level oxo zaleplon plasma pxb mice fold higher pxb control mice agreement vitro data thus aldehyde oxidase pxb mice functions human aldehyde oxidase vivo vitro contrast plasma level desethyl zaleplon pxb control mice higher pxb mice results suggest pxb mice humanized liver could useful experimental model predict aldehyde oxidase cypa mediated drug metabolism humans
analyze role haemophilus influenzae type children death resulting severe pneumonia conventional pcr southern blotting situ pcr evaluated detection hib paraffin embedded lung tissue autopsy samples children fatal outcome pneumonia china period results indicate hib cause fatal pneumonia samples
aim study investigate therapeutic effect angelica sinensis rat model diffuse interstitial pulmonary fibrosis induced bleomycin mechanism sinensis exerts effect also discussed diffuse interstitial pulmonary fibrosis model established male wistar rats endotracheal injection bleomycin rats randomly divided model group treatment group treated sinensis modelling control rats received equal volume saline hematoxylin eosin staining performed analyse alveolitis masson staining observe pulmonary fibrosis collagen content determined hydroxyproline assay nuclear factor kappa kappa activity measured electrophoretic mobility shift assay transforming growth factor beta tgf beta expression mrna level detected northern blotting protein level enzyme linked immunosorbent assay results obtained showed alveolitis pulmonary fibrosis rats treated sinensis significantly alleviated compared rats model group treatment sinensis also lowered content collagen decreased kappa activity alveolar macrophages reduced tgf beta expression mrna protein level results indicated sinensis effective treating alleviating interstitial pulmonary fibrosis possibly lowering collagen inhibiting activity kappa reducing tgf beta expression
background multiple factors affect oral mucosal healing persistence inflammatory reaction present study evaluates effects tumor necrosis factor tnf alpha interleukin beta epithelial cells ecs human gingival fibroblasts gfs vitro methods gfs ecs seeded well plates cells well plain culture medium dulbecco modified eagle medium dmem containing antibiotic antimycotic solution fetal bovine serum incubated hours cell lines exposed hours following cytokines tnf alpha beta cytokines diluted serum free dmem control cultures exposed serum free dmem effects exposure inflammatory cytokines determined means apoptosis anexin cell migration wound healing assay inflammatory cytokine synthesis enzyme linked immunosorbent assay data analyzed kruskal wallis mann whitney tests alpha results increased apoptosis rates noted cells exposed inflammatory cytokines except ecs exposed beta cell migration negatively affected inflammatory cytokines cell lines ecs gfs exposed significantly increased synthesis tnf alpha beta conclusions demonstrated results indicate negative effects tested inflammatory cytokines ecs gfs inducing apoptosis impairing cell migration results justify delayed oral mucosa healing presence inflammatory reaction
background facioscapulohumeral muscular dystrophy fshd common autosomal dominant muscular disorder caused contraction repeats complicated genotype phenotype correlation among different ethnic population remains controversial subject aimed refine correlation order provide new information genetic counseling methods cohort chinese families including affected individuals unaffected members investigated genetic analyses performed using probes pulsed field gel electrophoresis separation southern blotting grade fshd clinical severity scale adopted clinical assessment genotype phenotype correlation established linear regression analyses results observed roughly inversed correlation short ecori fragment size age corrected clinical severity score symptomatic patients compared male patients significant higher proportion females asymptomatic carriers severe patients showed larger variation size short ecori fragment high incidence asymptomatic minimally affected carriers found familial members conclusions although number repeats known one critical influences genotype phenotype correlation majority phenotypic spectrum still incompatible heterozygous contraction repeat especial female cases results suggest multi factors synergistically modulating phenotypic expression
introduction play important role clearance immune complexes apoptotic cell debris impaired clearance leads exposure native antigen development anti antibody formation anti antibody well studied systemic lupus erythematosus sle significance anti indian sle patients clinical manifestations clear aim aim study investigate associations anti antibody clinical well serological markers sle materials methods retrospective study sle patients fulfilling either american college rheumatology acr systemic lupus international collaborating clinics slicc classification criteria recruited inpatients outpatients services clinical immunology rheumatology department christian medical college vellore india march january anti antibody assayed elisa demeditec diagnostics gmbh germany logistic regression analysis performed find association anti antibodies serological clinical parameters sle including lupus nephritis results sixty nine patients sle patients anti levels higher patients compared without anti antibody also significantly associated positive immunofluorescence staining renal biopsy specimens overall renal systemic lupus erythematosus disease activity index sledai low mucocutaneous manifestation independently associated anti levels serum conclusion renal sledai low mucocutaneous manifestations independently associated raised anti antibody sle patients
serine brain enriched amino acid works transmitter like molecule physiologically activating nmda receptors synthesis serine carried serine racemase pyridoxal phosphate dependent enzyme addition carry racemization alpha beta eliminates water serine generating pyruvate review main mechanisms regulating activity serine dynamics brain propose role novel form astrocyte neuron communication serine shuttle whereby astrocytes synthesize export serine required synthesis serine predominantly neuronal serine synthesized released neurons taken astrocytes storage activity dependent release discuss alpha beta elimination serine may limit achievable intracellular serine concentration providing mechanistic rationale neurons store much serine astrocytes higher content serine astrocytes appears related increased serine stability low expression prevent substantial serine metabolism via alpha beta elimination serine shuttle pathway therapeutic targets neurodegenerative diseases nmda receptor dysfunction plays pathological roles article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
newcastle disease virus ndv strain mesogenic vaccine strain used booster vaccination chickens newcastle disease india many south east asian countries full length cdna clone virus generated ligating eight overlapping fragments generated reverse transcription polymerase chain reaction unique restriction enzyme sites within full length cdna clone flanked hammerhead ribozyme hepatitis delta virus ribozyme sequences defined genetic markers introduced ndv genome differentiate rescued virus parent virus gene cassette containing reporter gene green fluorescent protein flanked ndv gene start gene end signals generated pcr introduced full length clone ndv genes recombinant ndv encoding gfp gene rescued precise termini transfected permissive vero cells along support plasmids harbouring nucleoprotein phosphoprotein polymerase genes recombinant virus similar growth kinetics parent virus moderate reduction virulence generation reverse genetics system ndv strain help development multivalent vaccines viral diseases livestock poultry
growth factor heregulin hrg promotes breast cancer tumorigenesis metastasis differentially modulates cell responses dna damaging agents via dual extracellular nuclear localization given central role telomere dysfunction drive carcinogenesis alter chemotherapeutic profile transformed cells hypothesized unanticipated nuclear function hrg might regulate telomere length engineered overexpression hrg beta isoform non aggressive hrg negative mcf cells resulted significant shortening telomeres measured southern blotting telomere terminal restriction fragments conversely antisense mediated suppression hrg beta highly aggressive hrg overexpressing mda hst cells increased telomere length hrg beta overexpression promoted marked upregulation telomere binding protein trf protein expression whereas knockdown profoundly decreased trf expression double staining endogenous hrg beta telomere specific peptide nucleic acid probe fluorescence situ hybridization pna fish revealed partial localization hrg chromosome ends moreover predominantly nucleoplasmic staining pattern endogenous hrg beta appeared colocalize trf concomitantly rap telomere regulator specifically interacts trf small interfering rna mediated knockdown hrg decreased expression trf rap decreased presence chromosome ends coincidentally resulted formation longer telomeres study uncovers new function hrg beta controlling telomere length part due ability regulate interact telomere associated proteins trf rap
objective analyze usefulness rapid hiv testing pregnant patients delivery room methods prospective study compared rapid test fourth generation enzyme linked immunoassay elisa hiv screening among pregnant patients admitted labor unknown hiv status university hospital mexico july february pearson correlation analysis performed diagnostic accuracy two tests assessed hiv rna polymerase chain reaction pcr reference method results overall patients included signal cutoff value diagnostic criterion patients positive elisa result three negative rapid test three positive test value cutoff patients positive elisa result three positive rapid test one negative test three six patients confirmed hiv rna pcr conclusion rapid test showed strong correlation fourth generation elisa therefore rapid testing useful tool delivery room patients unknown hiv status
complete coding sequence manganese superoxide dismutase sod trichinella pseudospiralis obtained characterized first time degenerative reverse transcription polymerase chain reaction pcr rapid amplification complementary dna ends race reactions open reading frame sod contained nucleotides encoding amino acid residues included conserved histidine aspartate residues metal binding cysteine residues disulfide bond formation arginine residue directing superoxide ion protein presence mitochondrial transit peptides maturation cleavage site suggest cloned sod gene mitochondrial enzyme single copy gene containing three introns northern blotting suggested expression level sod lower sod infective stage larvae semi quantitative pcr demonstrated single dominant transcript sod highly expressed infective stage larvae adult worms information provides better understanding highly compartmentalized superoxide dismutases adenophorean nematodes
myxoid round cell liposarcoma characterized typical chromosomal translocations genetic alteration might result specific gene expression profiles tumor entity identify expressed genes myxoid round cell liposarcoma dna microarray analysis performed four tumors four samples adult fat tissue genes ret cdk cyclin myc showed expression means microarray analysis northern blotting immunohistochemistry demonstrated cytoplasmic localization associated proteins different tumors localization ret seen endothelial cells plexiform vasculature addition accumulation tumor cells cases results show expression cdk cyclin myc ret transcriptional protein level myxoid round cell liposarcoma cyclin ret finding reported tumor type increase ret transcriptional level might explained expression endothelium intratumoral plexiform blood vessels molecular pathogenesis myxoid round cell liposarcoma findings imply involvement four genes deregulation cell cycle especially cdk cyclin target genes myc
though present low numbers dendritic cells dcs recognized major players control cancer adaptive immunity roles cytotoxic cells helper cells well documented murine models cancer associated profound prognostic impact infiltrating human tumors less information known cells gain access tumor primed become tumor specific highlight recent findings demonstrate vital role dcs shown experts cross priming induction anti tumor immunity also focus two different mediators impair function tumor associated dcs prostaglandin beta catenin mediators seem important exclusion cells tumor microenvironment may represent key pathways target optimized treatment regimens cancer
background structural alignment proteins one challenging problems molecular biology tertiary structure protein strictly correlates function computationally predicted structures nowadays main premise understanding latter however computationally derived models often exhibit deviations native structure way confirm model comparison structures structural alignment pair proteins defined use concept protein descriptors protein descriptors local substructures protein molecules allow divide original problem set subproblems consequently propose efficient algorithmic solution literature one find many applications descriptors concept prove usefulness insight protein structures proposed approaches presented rather biological perspective computational algorithmic point view efficient algorithms identification structural comparison descriptors become crucial components methods structural quality assessment well tertiary structure prediction results paper propose new combinatorial model new polynomial time algorithms structural alignment descriptors model based maximum size assignment problem define prove solved polynomial time demonstrate suitability approach comparison exact backtracking algorithm besides simplification coming combinatorial modeling conceptual complexity level gain approach high quality obtained results terms alignment accuracy processing efficiency conclusions proposed algorithms developed integrated computationally efficient tool descs standalone allows user identify structurally compare descriptors biological molecules proteins rnas pdb protein data bank mmcif macromolecular crystallographic information file formats supported
definitively identifying cell type newly generated cells heart defining origins central questions cardiac regenerative medicine currently challenging ascertain myocardial identity track myocardial progeny heart development disease due lack proper genetic tools may lead many misinterpretations findings cardiac regenerative biology study developed set novel mouse models inserting double reporter genes nlacz gfp mgfp mcherry start codon tnnt myh nlacz nuclear lacz mgfp membrane gfp flanked two loxp sites animals found reporter genes faithfully recapitulated tnnt myh cardiac expression embryonic stage adulthood reporter mice provide unprecedented robustness fidelity visualizing tracing cardiomyocytes nuclear cell membrane localization signals animal models offer superior genetic tools meet critical need studies heart development cardiac stem cell biology cardiac regenerative medicine elsevier ltd rights reserved
corrosion odor caused hydrogen sulfide formation serious problems sewer operations cost prevent problems high understanding sulfur cycle mechanism controlling sulfur cycle sediment biofilm essential solve problems review reaction mechanisms sulfur cycle sediment biofilm sewer systems revealed using situ microelectrode measurements molecular biological technologies summarized results indicated profile reaction process sulfur cycle sediment biofilm primarily affected substrate concentration change liquid phase various substrate penetrations sediment biofilm biological community distribution shifting sulfate reduction bacteria sulfide oxidation bacteria across sediment biofilm response substrate change microenvironment sediment biofilm influence flow fluctuation profile sulfur cycle sediment biofilm field sewers advantageous biological techniques pyrosequencing metagenome analyses combined novel situ microelectrode measurements new concept model related control technology sulfur cycle sediment biofilm promoted future studies
huge number genes within human genome code proteins mediate control nutritional processes although large body information number genes chromosomal localisation gene structure function gathered far understanding orchestrated way make metabolism nevertheless based genetic information emerging daily basis offered fantastic new tools allow new insights molecular basis human metabolism normal well pathophysiological conditions recent technological advancements made possible analyse simultaneously large sets mrna proteins expressed biological sample define genetic heterogeneity may important individual response organism changes nutritional environment applications new techniques genome proteome analysis central development nutritional sciences next decade integration rapidly developing era functional genomics
anti cancer activity sulforaphane sfn recently investigated several cancer cell lines including human hepatic cancers however mechanism sfn induced cell death human hepatic cancer cells still well understood aim present work explore possible mechanisms sfn induced apoptosis hepatocellular carcinoma cells using proteomic analysis two dimensional electrophoresis based proteomic analysis employed identification possible target related proteins sfn induced apoptosis among eleven proteins identified regulated focused downregulation phosphofructo kinase fructose biphosphatase pfkfb protein known key modulator glycolysis also showed sfn regulated expression transcriptional factor hypoxia inducible factor alpha hif alpha strongly regulates pfkfi expression order obtain broad understanding correlation hif sfn observed inhibition activity mitogen activated protein kinases regulators hif activity findings suggest sfn potent inducer apoptosis hepatocellular carcinoma cells via pfkfb inhibition pathways hif pathway inhibition may mediated inhibition mitogen activated protein kinases elsevier rights reserved
eco toxicological effects bacillus thuringiensis maize earthworm life history traits widely studied results controversial effects earthworm bacterial community rarely studied effects two hybrids maize event cbcl mon straw return eisenia fetida bacterial community investigated terminal restriction fragment length polymorphism rflp polymerase chain reaction denaturing gradient gel electrophoresis pcr dgge combing dna sequencing compared near isogenic non maize maize straw return significant effects soil nutrients especially available nitrogen significant differences shown soil bacterial community non maize treatments closely correlated soil available rather crylab protein statistically significant difference bacterial community earthworm gut contents non maize treatments significant differences bacterial community earthworm casts found among three maize varieties treatments closely correlated crylab protein levels differentiated bacterial species earthworm casts mainly belonged proteobacteria including brevundimonas caulobacter pseudomonas stenotrophomonas methylobacterium asticcacaulis achromobacter etc associated mineralization metabolic process degradation plants residues therefore maize straw return caused changes bacterial community fetida casts possibly caused direct crylab protein non expected effects levels maize straw elsevier ltd rights reserved
corynebacterium pseudotuberculosis biovar equi important pathogen horses increasing frequency united states responsible various clinical forms infection including external abscesses internal abscesses abdominal thoracic cavities ulcerative lymphangitis host pathogen factors dictating form severity infection currently unknown recent investigations shown genotyping pseudotuberculosis isolates using enterobacterial repetitive intergenic consensus eric pcr useful understanding evolutionary genetics species well molecular epidemiology studies aims present study assess genetic diversity pseudotuberculosis strains isolated horses california united states epidemiologic relationships among isolates one hundred seven pseudotuberculosis biovar equi isolates ninety five horses two pseudotuberculosis biovar ovis strains pseudotuberculosis atcc type strain pseudotuberculosis vaccine strain fingerprinted using eric pcr pseudotuberculosis isolated horses showed high genetic diversity clustering twenty seven genotypes diversity index minimal spanning tree showed four major clonal complexes pattern temporal clustering strains isolated horse showed identical eric pcr genotype exception two strains isolated animal showed distinct genotypes suggesting infection found strong genetic signals related clinical form including internal versus external infections however temporal clustering genotypes observed published elsevier
precision medicine defined predictive preventive personalized participatory healthcare service delivery model recent developments molecular biology information technology make reality today use massive amounts genetic omics clinical environmental lifestyle data cancer one prominent public health threats developed countries research community governments investing significant time money efforts precision cancer medicine pcm although pcm research extremely promising number hurdles still remain road optimal integration standardized evidence based use pcm healthcare systems indeed pcm raises number technical organizational ethical legal social economic challenges taken account development appropriate health policy framework highlight salient issues regarding standards needed integration pcm healthcare systems identify fields research needed policy implemented key challenges include limited creation new standards collection analysis sharing samples data cancer patients creation new clinical trial designs renewed endpoints believe issues need addressed matter priority public health policymakers coming years better integration pcm healthcare
study describe construction first genetically modified mutant halovirus infecting haloalkaliphilic archaea random choice targeted orf currently uncharacterized viral gene haloalkaliphilic virus phi used polyethylene glycol peg mediated transformation method deliver disruption cassette lysogenic strain haloalkaliphilic archaeon natrialba magadii bearing phi provirus approach yielded mutant virus particles carrying disrupted version orf disruption orf influence morphology mature virions mutant virus able infect cured strains magadii resulting lysogenic orf disrupted strain analysis strain carrying mutant virus revealed repressor function orf absence onset lysis expression viral proteins occurred prematurely compared timing wild type strain constitutive expression orf cured strain magadii reduced plating efficiency phi seven orders magnitude overexpression orf lysogenic strain magadii resulted inhibition lysis total absence viral proteins well viral progeny experiments directly regulated expression tail fiber protein orf influence methyltransferase gene orf describe establishment inducible promoter vivo studies magadii importance genetic analyses haloalkaliphilic archaea haloviruses rarely reported therefore little insight vivo roles proteins functions gained far used reverse genetics approach identify function yet undescribed gene phi provide evidence currently unknown protein phi acts repressor protein viral life cycle affecting transition lysogenic lytic state virus thus repressor genes haloviruses could identified sequence homologies future moreover describe use inducible promoter magadii work provides valuable tools identification unknown viral genes approach well functional studies proteins inducible expression
bromouracil nucleobase analogue replace thymine dna strands acts strong radiosensitizer potential applications molecular biology cancer therapy deactivation bromouracil ultraviolet irradiation investigated singlet triplet manifold accurate quantum chemistry calculations non adiabatic dynamics simulations found irradiation bright state three main relaxation pathways principle possible relaxation back ground state intersystem crossing isc photodissociation based accurate caspt optimizations propose ground state relaxation predominant deactivation pathway gas phase employ different electronic structure methods assess suitability carry excited state dynamics simulations mrcis multi reference configuration interaction including single excitations used surface hopping simulations compute ultrafast isc dynamics mostly involves states article part themed issue theoretical computational studies non equilibrium non statistical dynamics gas phase condensed phase interfaces
parents opportunity educate children facilitate behaviours lifestyle habits may prevent delay genetic disease mitigate predispositions within family sought determine parents understanding genetic knowledge heritability using quantitative survey methodology volunteer participants surveyed convenience sample parents caregivers within waiting room general children outpatient clinic results indicated average genetic knowledge levels fairly high majority participants scoring correct knowledge based questions scores found positively correlated education inversely correlated self perceived knowledge finding suggests participants less experience tended overestimate knowledge suggest gaps knowledge genetics heritability could improved using educational interventions media campaigns provision informational brochures changes current high school curriculum would increase exposure genetics heritability parents children
background japan chronic active epstein barr virus infection caebv may manifest infection cells cells clonal lymphoid proliferations overt lymphoid malignancy ebv positive lymphoproliferative disorders ebv lpd childhood related distinct infectious mononucleosis like caebv seen western populations clonal nature viral infection within lymphoid subsets patients ebv lpd childhood well described objectives viral distribution clonotype assessed within cell subsets cells stem cells following high purity cell sorting study design six japanese patients ebv lpd childhood cell lpd cell lpd recruited prior immunochemotherapy viral loads clonal analyses cell subsets cells stem cells studied high accuracy cell sorting southern blotting real time polymerase chain reaction results patient monoclonal proliferation ebv infected gamma delta cells carried lower copy number ebv alpha beta cells patients clonal expansions ebv infected cells lower ebv load cells patients ebv cell expansions higher ebv load cells ebv terminal repeats determined clonal bands minor targeted populations patients size terminal repeats indicated clonotype minor subsets major subsets four patients ebv however detected bone marrow derived stem cells patients conclusions single ebv clonotype may infect multiple cell cell subsets patients ebv lpd childhood stem cells spared suggesting infection differentiated elements elsevier rights reserved
dopamine plays crucial essential role function human metabolism important develop selective sensitive materials detection dopamine without interference coexisting compounds study fluorescein isothiocyanate fitc conjugated graphene oxide microsheets developed system used novel supporting matrix adsorption based selective sensitive detection dopamine fluorescein isothiocyanate conjugated graphene oxide microsheets fitc gos showed high affinity selectivity fitc gos times higher coexisting molecules ascorbic acid uric acid respectively compared affinity fitc gos non specific negligible low detection limit obtained experiments carried neutral solutions around physiological study provides simple easy method selective sensitive detection dopamine mixture abundant coexisting molecules generally cause interference elsevier rights reserved
distinct regulatory signaling mechanisms exist cortisol brain derived neurotrophic factor bdnf may influence secondary injury cascades associated traumatic brain injury tbi predict outcome investigated concurrent csf bdnf cortisol relationships patients sampled days severe tbi accounting bdnf genetics age also determined associations csf bdnf cortisol month mortality bdnf variants used create gene risk score grs reference previously published hypothesized risk mortality younger patients years hypothesized bdnf production secretion capacity variants group based trajectory analysis traj used create two cortisol groups high low trajectories bayesian estimation approach informed mediation models results show csf bdnf predicted patient cortisol traj group also grs moderated bdnf associations cortisol traj group additionally cortisol traj predicted month mortality mediation analysis bdnf predicted mortality cortisol acting mediator yielding mediation percentage mediation effects increased among younger patients bdnf grs interaction predicted mortality younger patients thus conclude month mortality severe tbi predicted mediation model csf cortisol bdnf suggesting regulatory role cortisol bdnf contribution tbi pathophysiology mortality particularly among younger individuals severe tbi based literature cortisol modulated bdnf effects mortality tbi may related known hormone neurotrophin relationships neurological injury severity autonomic nervous system imbalance
flow cytometry contributed virology faced many drawbacks concerning detection limits due small size viral particles nonetheless giant viruses changed many concepts world viruses result size hence opened possibility using flow cytometry study recently developed high throughput isolation viruses using flow cytometry protozoa culture consequently isolating viral mixture sample became common nevertheless one virus multiplies faster others mixture impossible obtain pure culture minority population describe robust sorting system separate viable giant virus mixtures supernatants tested three flow cytometry sorters sorting artificial mixtures purity control assessed electron microscopy molecular biology proof concept applied sorting system culture supernatant taken sample containing viral mixture separate using end point dilution addition isolating quick growing mimivirus sorted cultured new slow growing virus named cedratvirus sorting assay presented paper powerful versatile tool separating viral populations amoeba cultures adding value new field flow virometry
herein propose drug free approach cancer therapy involves cancer cell targeting calcification cctc several types cancer cells hela cells characterized folate receptor overexpression selectively adsorb folate molecules concentrate locally induce specific cell calcification resultant calcium mineral encapsulates cancer cells inducing death invivo assessments confirm cctc treatment efficiently inhibit tumor growth metastasis without damaging normal cells compared conventional chemotherapy accordingly cctc remarkably improve survival rate tumor mice notably calcium ions essential ingredients human metabolism means cctc successful drug free method tumor therapy achievement may represent alternative cancer therapy characterized selective calcification based substitution sclerosis tumor disease
people living nowadays hiv aids may treated effectively regarding virus replication immunology however non aids defining cancer growing relevance due high incidence unfavorable outcome aim review summarize current knowledge gastrointestinal carcinoma although literature cancer rare increased incidence esophageal gastric pancreatic hepatocellular colorectal carcinoma demonstrated however reports therapy strategies outcome despite increased occurrence many carcinomas little known individualized treatment options outcome hiv positive patients efforts undertaken close gap karger gmbh freiburg
type spermatogonia first appear postnatally mice immortalized diploid cells reproduce adulthood animals current study explored feasibility producing stable transgenic mice using cells enhanced pegfp plasmids suspended exgen transfection reagent injected different angles testes old male icr mice resulting type spermatogonia mediated gene transfer tasmgt mice mated normal females different stages sexual maturity integration expression introduced egfp gene evaluated transgenic offspring pcr southern blotting analysis foreign gene integration rates low dose group gene suspension injected testis high dose group suspensions injected three stages female sexual maturity tested respectively average integration rates two dose groups respectively significant difference semi quantitative pcr analysis showed introduced gfp gene expressed integration mice addition gfp expression observed sperm cells tasmgt mice also embryos pups generation transgenic mice hence although foreign gene integration rate tasmgt high transgenic offspring show yet unexplained defects results indicate method potentially feasible reproducible new approach creating transgenic mice
study carried poultry flocks elucidate roles various complicating pathogens involved along newcastle disease low pathogenic avian influenza lpai outbreaks necropsy conducted samples collected isolation newcastle disease virus ndv influenza virus infectious bronchitis virus ibv pathogenic bacteria molecular detection infectious laryngotracheitis virus iltv fowl adeno virus fav chicken anaemia virus cav mycoplasma synoviae mycoplasma gallisepticum isolation results confirmed flocks positive presence hemagglutinating agents hemagglutination positive flocks flocks positive avian influenza virus aiv ndv flocks positive ndv flocks positive aiv sequence analysis hemagglutinin neuraminidase genes aiv revealed belonging lpai subtype sequence analysis gene ndv revealed belong virulent type pcr results confirmed presence three seven etiological agents cav fav iltv avian pathogenic coli along lpai ndv positive flocks detection rate triple quadruple quintuple sextuple sevenfold infections flocks flocks flocks flocks flocks respectively conclusion disease complex involved one pathogen primarily resulting interplay lpai ndv subsequently could exacerbated infection agents may cause exacerbated outbreaks may otherwise undetected field
phasing genotypes haplotypes becoming increasingly important due applications study diseases population evolutionary genetics imputation several studies focused development computational methods infer haplotype phase population genotype data aim study compare phasing algorithms implemented beagle findhap flmpute impute shapelt software using genotyping data six scenarios considered parents sire progeny pairs sire dam progeny trios without pedigree information holstein cattle algorithms compared respect phasing accuracy computational efficiency studied population beagle flmpute accurate phasing algorithms across scenarios phasing accuracies beagle flmpute respectively respectively generally flmpute resulted higher accuracy genotypic information least one parent available absence parental genotypes pedigree information beagle impute double default number states slightly accurate flmpute findhap gave high phasing accuracy parents genotypes pedigree information available terms computing time findhap fastest algorithm followed flmpute flmpute times faster across scenarios beagle shapelt impute respectively summary flmpute beagle accurate phasing algorithms moreover low computational requirement flmpute makes attractive algorithm phasing genotypes large livestock populations
prior consensus biological transformations occurred two electron steps thereby avoiding generation free radicals dramatic advances spectroscopy biochemistry molecular biology led realization protein based radicals participate vast array vital biological mechanisms redox processes involving high potential intermediates formed reactions particularly susceptible radical formation clusters tyrosine tyr tryptophan trp residues found many reactive enzymes raising possibility play antioxidant protective role blue copper proteins plastocyanin like domains tyr trp clusters uncommon low potential single domain electron transfer proteins two domain copper nitrite reductases two domain muticopper oxidases however exhibit clusters tyr trp residues near trinuclear copper active site reduced clusters may play protective role ensure reactive oxygen species liberated reduction
scope flavanol rich foods known exert beneficial effects cardiovascular health biological effects depend bioavailability flavanols may influenced food matrix dose ingested compared bioavailability dose response epicatechin whole apple epicatechin rich extract effects plasma urinary nitric oxide metabolites methods results randomized placebo controlled crossover trial subjects consumed drinks containing epicatechin apple extract apple puree containing epicatechin blood urine samples collected post ingestion maximum plasma concentration auc absorption urinary excretion significantly higher ingestion epicatechin drinks compared apple puree time maximum plasma concentration significantly later puree compared drinks fold higher ingestion epicatechin drink compared epicatechin drink excretion metabolites higher test products compared placebo significant high dose drink conclusions oral bioavailability apple epicatechin increases higher doses reduced whole apple matrix potential increase bioavailability
long intergenic noncoding rnas lincrnas play important roles regulating biological functions underlying molecular mechanisms glioma investigated expression level biological function linc oip glioma current study used quantitative real time polymerase chain reaction qrt pcr determine expression linc oip glioma tissues adjacent normal tissues level linc oip regulated glioma tissues significantly correlated advanced tumor stage iii subsequently efficacy knockdown linc oip linc oip small interfering rna sirna evaluated vitro found knockdown linc oip inhibit glioma cells proliferation migration vitro tumor formation vivo mechanistic studies revealed effect linc oip knockdown glioma cell phenotype least partially regulation yap inhibition notch signaling pathway activity thus study provides evidence linc oip potential therapeutic target novel molecular biomarker glioma published elsevier
background advances nucleic acid sequencing technologies ushered era genetic based precision medicine applications genetic discoveries practice medicine however hindered phenotypic variability genetic variants report illustrates extreme pleiotropic phenotypes associated established causal mutation hereditary cardiomyopathy case presentation report year old white female presented syncope echocardiographic cardiac magnetic resonance cmr imaging findings consistent diagnosis hypertrophic cardiomyopathy hcm electrocardiogram however showed qrs pattern resembling epsilon wave feature arrhythmogenic right ventricular cardiomyopathy arvc whole exome sequencing mean depth coverage exons analysis identify pathogenic variant known hcm genes identified established causal mutation arvc mutation involves canonical splice accepter site pkp gene encodes plakophillin sanger sequencing confirmed mutation pkp common causal gene arvc implicated hcm findings echocardiography cmr course year follow showed septal hypertrophy hyperdynamic left ventricle consistent diagnosis hcm however neither baseline follow echocardiography cmr studies showed evidence arvc right ventricle normal size thickness function evidence fibro fatty infiltration myocardium conclusions patient carries established pathogenic mutation arvc subtle finding arvc exhibits classic phenotype hcm contrasting phenotype arvc case illustrates need detailed phenotypic characterization patients hereditary cardiomyopathies well challenges physicians face applying genetic discoveries practicing genetic based precision medicine
background chitin second abundant polysaccharide earth great target bioconversion applications phylum bacteroidetes one nature ubiquitous bacterial lineages essential global carbon cycle many members highly efficient degraders complex carbohydrates however despite specialist reputation carbohydrate conversion mechanisms degrading recalcitrant crystalline polysaccharides chitin cellulose hitherto unknown results describe complete functional analysis novel polysaccharide utilization locus pul soil bacteroidete flavobacterium johnsoniae tailored conversion chitin johnsoniae chitin utilization locus chiul consists eleven contiguous genes encoding carbohydrate capture transport proteins enzymes two component sensor regulator system key chitinase chia encoded chiul atypical terms known bacteroidetes affiliated pul mechanisms anchored outer cell membrane consists multiple catalytic domains demonstrate extraordinary hydrolytic efficiency chia derives synergy multiple chitinolytic endo exo acting previously unidentified chitin binding domains reverse genetics show chia pul encoded proteins involved sugar binding import chitin sensing essential efficient chitin utilization surprisingly chiul encodes two pairs susc like outer membrane proteins ligand binding structural studies revealed functional differences two susd like proteins enhance scavenging chitin environment combined results study provide insight mechanisms employed bacteroidetes degrade recalcitrant polysaccharides reveal important novel aspects pul paradigm conclusions combining reverse genetics map essential pul genes structural studies outer membrane chitin binding proteins enzymology provide insight mechanisms employed bacteroidetes degrade recalcitrant polysaccharides introduce new saccharolytic mechanism used phylum bacteroidetes presented discovery analysis chiul greatly benefit future enzyme discovery efforts well studies regarding enzymatic intramolecular synergism
potato one main targets genetic improvement gene transfer aim present study establish robust protocol genetic transformation three dihaploid four economically important cultivars potato using agrobacterium tumefaciens carrying vivo screenable reporter gene green fluorescent protein gfp marker gene neomycin phosphotransferase nptii stem leaf explants used transformation agrobacterium tumefaciens strain lba carrying binary vector phb kanamycin selection visual screening gfp epifluorescent microscopy pcr amplification nptii gfp genes well pcr southern blotting gfp northern blotting nptii used transgenic plant selection identification analysis genetic transformation optimized best performing genotypes mean number shoots expressing gfp per explant dihaploid line baltica respectively nptii marker gfp reporter genes permitted selection excellent visual screening transgenic tissues plants also revealed effects antibiotic selection organogenesis transformation frequency identification escapes chimeras potato genotypes silencing gfp transgene may represent site specific inactivation cell differentiation occurred transgenic shoots tetraploid cultivars specific chimeric clones dihaploid line regeneration escapes could attributed either protection non transformed cells neighbouring transgenic cells persistence agrobacterium cells plant tissues cultivation
background primary congenital glaucoma pcg severe ocular disorder presents early life cytochrome cypb latent transforming growth factor beta binding protein ltbp commonly mutated genes pcg aim investigate causative genetic mutations eight indian families pcg materials methods whole exome sequencing applied analyze genomic dna samples pcg probands sanger sequencing utilized confirm identified mutations results identified four homozygous missense mutations cypb one nonsense mutation ltbp eight indian families among five mutations identified cypb ltbp represent novel mutations conclusions study expands mutational spectrum pcg indian population
recent development high throughput single cell assay technique enables screening novel enzymes based functional activities large scale metagenomic library previously proposed genetic enzyme screening system gess uses dimethylphenol regulator activated phenol nitrophenol since vast amount natural enzymatic reactions produce phenolic compounds phenol deriving substrates single genetic screening system theoretically applied screen different enzymes brenda database despite general applicability gess applying screening process requires specific procedure reach maximum flow cytometry signals detail developed screening process includes metagenome preprocessing gess operation flow cytometry sorter three different phenolic substrates nitrophenyl acetate nitrophenyl beta cellobioside phenyl phosphate gess used screen identify three different enzymes lipase cellulase alkaline phosphatase respectively selected metagenomic enzyme activities confirmed flow cytometry dna sequencing diverse vitro analysis used gene identification
combination nanoparticles polymerase chain reaction pcr benefits easier sample handling higher sensitivity also drawbacks loss colloidal stability inhibition pcr present work systematically investigates interaction magnetic iron oxide nanoparticles mions pcr terms colloidal stability potential pcr inhibition due interaction pcr components nanoparticle surface several types mions without surface functionalisation sodium citrate dextran aminopropyl triethoxysilane aptes prepared characterised transmission electron microscopy tem dynamic light scattering dls fourier transform infrared spectroscopy colloidal stability presence pcr components investigated room temperature pcr thermo cycling dextran stabilized mions show best colloidal stability pcr mix room elevated temperatures citrate aptes stabilised well uncoated mions show comparable pcr inhibition near concentration inhibition dextran stabilized mions became apparent near demonstrated pcr could effectively carried even presence elevated concentration mions choosing right coating approach supplementing reaction mix critical components taq dna polymerase ions elsevier rights reserved
spot blotch caused cochliobolus sativus economically important disease barley identify genetic loci conferring resistance three different pathotypes sativus worldwide barley core collection bcc consisting accessions usda national small grains collection genotyped barley illumina infinium iselect assay phenotyped seedling stage three sativus isolates ndf pathotype ndpr pathotype pathotype association mapping analysis performed whole panel containing barley accessions well two rowed panel six rowed panel consisting two rowed six rowed barley accessions respectively resistance isolate one quantitative trait locus qtl qrcs detected three panels three qtl qrcs qrcs qrcs detected whole panel six rowed panel two rowed panel respectively resistance isolate ndpr one qtl qrcs identified whole panel two rowed panel qtl qrcs identified six rowed panel resistance isolate ndf three qtl qrcs qrcs qrcs detected three panels one qtl qrcs detected two rowed panel among ten qtl detected four qrcs qrcs qrcs qrcs mapped chromosome regions containing previously identified qtl spot blotch resistance six qrcs qrcs qrcs qrcs qrcs qrcs novel snp markers associated qtl identified study useful breeding barley cultivars resistance multiple pathotypes sativus
mature landfill leachate difficult treated due complex composition high concentration ammonia low carbon nitrogen ratio simultaneous partial nitrification anammox denitrification snad intermittent aeration developed achieve nitrogen removal mature landfill leachate ammonia conversion efficiency total nitrogen removal efficiency obtained influent scod respectively full utilization carbon source high efficient anammox two significant factors snad process based nitrogen balance nitrogen removal contribution anammox dehitrification three dimensional excitation emission matrix eem fluorescence spectroscopy used detect dissolved organic matter dom typical operation cycle first time demonstrating dom increased anoxic phase facilitated reduction excess denitrification quantitative polymerase chain reaction qpcr analysis revealed dominant bacterial groups aerobic ammonia oxidizing bacteria aob anaerobic ammonia oxidizing bacteria anaob accounted total bacteria respectively whole snad process nitrogen cod removed wastewater simultaneously elsevier rights reserved
generate transgenic lily plants selectable marker improved tolerance abiotic stress two vectors transformed lilium oriental hybrid sorbonne particle bombardment pksb vector included cre loxp mediated site specific cdna excision system control inducible promoter rda pbpc pcs vector carried pcs gene hypothesized would improve resistance drought salt stresses transgenic lily plantlets presence two genes simultaneously detected pcr southern blotting two resistant plantlets transformation rate subsequently inducer expression tested varying conditions optimize deletion marker gene results molecular detection assays revealed maintaining bases bulblet scales degrees resulted increase excision rate reaching expression pcs improved resistance salt stress transgenic lily plantlets results demonstrated feasibility using cre loxp based marker elimination system generate marker free transgenic plantlets improved stress tolerance
cell highly organized dynamic intricate biological entity orchestrated myriad proteins self assemblies protein actions depend coordination space time curiosity protein functions extended test tube intracellular space cell accordingly modern technological developments advances enzymology geared towards analyzing protein functions within intact single cells discuss fluorescence single cell microscopy employed identify subcellular locations proteins detect reversible protein protein interactions measure protein activity kinetics living cells considering fluorescence single cell microscopy recently recognized primary technique enzymology potentials outcomes studying intracellular protein functions projected immensely useful enlightening anticipate review would inspire many investigators study proteins interest beyond conventional boundary specific disciplines article part special issue entitled physiological enzymology protein functions elsevier rights reserved
aim inhibit expression vascular endothelial growth factor vegf colon cancer cell line rna interference rnai methods followed service rnai designed constructed two kinds shrna expression vectors aiming vegf gene transfected colon cancer cells lipofectamine level vegf mrna investigated pcr northern blotting protein expression vegf observed immunofluoresence staining western blotting results got two kinds vegf specific shrna expression vectors could efficiently inhibit expression vegf cells pcr northern blotting immunofluoresence staining western blotting showed inhibition rate vegf expression respectively conclusion expression vegf inhibited rna interference cells
imaging frster resonance energy transfer fret powerful tool examining cell biology real time studies utilizing fret commonly employ two dimensional culture mimic three dimensional cellular microenvironment method perform quenched emission fret imaging using conventional widefield epifluorescence microscopy cells within hydrogel environment presented analysis method ratiometric fret probes yields linear ratios probe activation range described measurement intracellular cyclic adenosine monophosphate camp levels demonstrated chondrocytes forskolin stimulation using probe epac activation icue ability detect differences camp signaling dependent hydrogel material type herein photocrosslinking hydrogel gel polyethylene glycol dimethacrylate thermoresponsive hydrogel gel compared fret methods method requires little additional work laboratories already utilizing fret imaging easily adopt method perform cellular studies microenvironment applied high throughput drug screening engineered microtissues additionally compatible forms fret imaging anisotropy measurement fluorescence lifetime imaging flim advanced microscopy platforms using confocal pulsed modulated illumination
best evidence rapid evolutionary change comes studies archipelagos oceanic islands city parks analogous systems create geographically isolated green spaces differ size structure complexity little however known whether city parks within single urban centre drive selection result diversification native species provide evidence rapid genetic morphological differentiation native lizard intellagama lesueurii four geographically close yet unconnected parks within one city year establishment city park varied oldest youngest equating generation time range three generations genetic divergence among city park populations large despite small pairwise geographic distances found two three times higher microsatellites three times higher mtdna relative nonurban populations patterns morphological differentiation also found extensive among four city park populations contrast nonurban populations city park populations showed significant differentiation relative body size relative head limb morphology relative forelimb hindlimb length crucially show patterns differentiation unlikely caused founder events drift alone results suggest city park archipelagos could represent theatres rapid evolution may time favour adaptive diversification
biologics monoclonal antibodies mabs fusion proteins revolutionized practice medicine year marks anniversary food drug administration approval first mab human use review examine biotechnological breakthroughs spurred explosive development biopharmaceutical mab industry well critical lessons learned human immunology informed development improved biologics also discuss common mechanisms action currently approved biologics indications approved date elsevier inc rights reserved
neoscytalidium dimidiatum emerging fungus causes skin infection similar dermatophytosis affects immunocompetent immunosuppressed individuals may invade deeper tissues organs cause systemic disease little known etiopathogenesis infection caused fungus standard effective treatment available aim present experimental study develop animal model skin infection dimidiatum balb mice inoculated two fungal strains different routes infection tested challenged intradermally dimidiatum strain hupe caused skin infection animals whereas strain hupe neoscytalidium dimidiatum isolated skin animals inoculated via epidermal scarification animals challenged via subcutaneous injection mice inoculated intradermally followed four weeks clinical samples collected days inoculation corresponding different stages infection cutaneous infection rate measured recovery dimidiatum strain hupe skin biopsies animals inoculated intradermally revealed presence infection animals sacrificed days post inoculation conidia hyphae observed pas stained sections well mild moderate inflammatory infiltrate haematoxylin eosin although differ animals inoculated either quinckeanum pbs intradermal route inoculation considered suitable study skin infection dimidiatum animal model developed preliminary study first allow study cutaneous infection dimidiatum may contribute investigations aetiology immunology pathogenesis treatment targeting emerging mycosis
spite reduction rejection rates improvement short term survival post kidney transplantation modest progress occurred long term graft attrition years timely identification molecular events precede clinical histopathological changes might help early intervention thereby increase graft half life evolution omics tools enabled systemic investigation influence whole genome epigenome transcriptome proteome microbiome transplant function survival omics era systemic approaches depth clinical phenotyping use strict validation methods key understanding complex mechanisms associated graft function systems biology interdisciplinary holistic approach focuses complex dynamic interactions within biological systems complexity human kidney transplant unlikely captured reductionist approach appears essential integrate multi omics data elucidate multidimensional multilayered regulation underlying heterogeneous complex kidney transplant model herein discuss studies focus genetic biomarkers emerging technologies systems biology approaches increase ability discover biomarkers understand mechanisms stratify patients responses post kidney transplantation review focuses importance multi omics integration approach advantages reductionist one dimensional omics approaches better mechanistic understanding diagnosis kidney graft outcomes
two germinating seed transformation methods scarifying puncturing methods used transfer bar gene inbred maize line generated transgenic glufosinate tolerant maize plants conducted comparison two transformation methods used plasmid pcambar chi donor germinating maize seeds recipients germinating seeds subjected puncture scarifying treatment soaked water injured seeds cultivated agrobacterium sown experimental plots putative transgenic maize plants selected basta tolerance screening pcr detection confirmed southern blotting following glufosinate tolerance assay molecular detection transgenic lines transgenic seedling first generation transgenic seedling second generation transgenic seedling confirmed bar gene stably inherited expressed pcr amplification result transgenic plants showed genetic segregation ratio bar gene followed ratio single dominant mendelian factor study proved germinating seed treatment approaches rapid simple plant transformation methods particular application puncture method expand tissue culture free transformation dicotyledonous plants friends science publishers
fluorescent proteins fps well known broadly used bio imaging markers molecular biology research many genes cloned anthozoan species suggested multi copies genes present genomes however full complement genes single coral species remained unidentified study analyzed genes two stony coral species cdna sequences acropora digitifera acropora tenuis revealed presence multi gene family unexpectedly large number genes separated short middle wavelength emission mwe middle long wavelength emission lwe chromoprotein clades gene copy numbers genomes four digitifera colonies estimated mwe lwe clades total gene copies per individual shown quantitative pcr best knowledge largest sets genes per genome fluorescent light produced recombinant protein products encoded newly isolated genes explained fluorescent range live digitifera suggesting high copy multi gene family generates coral fluorescence functionally diverse multi gene family must existed ancestor acropora species suggested molecular phylogenetic evolutionary analyses persistence diverse function high copy number multi gene family may indicate biological importance diverse fluorescence emission light absorption acropora species
background exercise immunology become growing field past years emphasis understanding different forms exercise affect immune function mechanistic studies beginning shed light exercise may impair development cancer used augment cancer treatment beneficial effects exercise immune system may exploited improve patient responses cancer immunotherapy methods investigated effects acute exercise composition peripheral blood leukocytes time male population varying fitness subjects performed brief maximal intensity cycling regimen longer less intense cycling regimen separate visits leukocytes measured multi parameter flow cytometry immunophenotypes collection sample results found differential induction leukocytosis dependent exercise intensity duration cytotoxic natural killer cells demonstrated greatest increase average fold immediately post maximal exercise whereas granulocytes demonstrated largest increase post maximal exercise fold longer less intense endurance exercise resulted attenuated leukocytosis induction leukocytosis differ limited study active sedentary subjects exercise although found baseline samples sedentary individuals elevated percentages cdro memory cells elevated proportions cells expressing negative immune regulator programmed death finally identified several leukocytes whose presence correlated obesity related fitness parameters conclusions data suggests leukocytes subsets differentially mobilized peripheral blood dependent intensity duration exercise pre existing compositional differences leukocytes associated various fitness parameters
microfabricated cellular microarrays consist contact printed combinations biomolecules elastic hydrogel surface provide tightly controlled high throughput engineered system measuring impact arrayed biochemical signals cell differentiation recent efforts using cell microarrays demonstrated utility combinatorial studies many microenvironmental factors presented parallel however efforts focused primarily investigating effects biochemical cues cell responses present cell microarray platform tunable material properties evaluating cell differentiation immunofluorescence biomechanical cell substrate interactions traction force microscopy developed two different formats utilizing polyacrylamide hydrogels varying young modulus fabricated either microscope slides glass bottom petri dishes provide best practices troubleshooting fabrication microarrays hydrogel substrates subsequent cell culture microarrays acquisition data platform well suited use investigations biological processes biochemical extracellular matrix composition biophysical substrate stiffness cues may play significant intersecting roles
natural killer cells cells traditionally attributed innate immune system considered previously received stimuli little effect functioning immune cells indeed cells even without prior sensitization provide rapid effector response tumor virus infected otherwise damaged cells limited repertoire receptors expression require somatic recombination however recent data indicate cells may acquire properties specific adaptive immune cells particular cells shown possess features immunological memory namely ability quickly effectively respond repeated stimulus mechanisms memory acquisition cells differ implemented lymphocytes still rather vague presumably mechanisms underlie significant phenotypic functional cell diversity emerging differentiation recent data accumulated area considerably change existing immunology paradigm postulates clear delineation adaptive innate immune cells published data phenotypic functional characteristics cells particular changes characteristics cell differentiation generation memory like cells reviewed
introduction endodontics uses cell therapy strategies treat pulpal periapical diseases therapies surgeons aim reconstruct natural microenvironments regulate activity dental stem cells methods searched articles pubmed using key words regenerative endodontics dental stem cell biology articles reviewed factors may influence histologic results preclinical dental treatments use regenerative endodontic procedures pulpectomy results several factors origin stem cells biomimicry scaffolds used size lesions considered influence histologic appearance regenerated pulp dentin complex treatments information accumulating transcription factors generate pulp dentin complex survival trophic factors would benefit niche recovery histologic results conclusions article discuss noninterchangeability stem cells influence dentin entrapped molecule release pulp regeneration survival stem cells need positional markers assess treatments histologically vivo amplification appropriate dental stem cells search scaffolds storing molecular diversity entrapped dentin use positional transcription factors histologic markers necessary improve future preclinical experiments
aims study carried isolate identify spontaneously growing populations bacteria fungi surface biologically recovered polyhydroxyalkanoate pha copolymer poly hydroxybutyrate hydroxyhexanoate hhx methodology results large scale pha biosynthesis carried using fermenter biological methodology developed laboratory utilized pha recovery using standard microbiological molecular biology techniques naturally growing microbial populations surface biologically recovered pha identified scanning electron microscopy sem analysis showed identified bacterial bacillus cereus burkholderia cepacia fungal isolates aspergillus niger byssochlamys nivea penicillium citrinum penicillium griseofulvum able grow degrade hhx copolymer conclusion significance impact study first report biologically recovered pha pellet addressing occurrence microorganisms grew spontaneously storage laboratory conditions fungi appeared dominant bacteria ability colonize biologically recovered pha
present fast reliable line clean hplc method simultaneous determination five major urinary metabolites ethylhexyl phthalate dehp namely mono ethyl carboxypentyl phthalate carboxy mepp mono carboxymethyl hexyl phthalate carboxy mmhp mono ethyl hydroxyhexyl phthalate mehp mono ethyl oxohexyl phthalate oxo mehp mono ethylhexyl phthalate mehp metabolites represent oral dehp dose first time succeeded reliably quantify carboxy mepp identify carboxy mmhp major metabolites native urines general population analytical procedure consists enzymatic hydrolysis line extraction analytes urinary matrix restricted access material column ram back flush transfer onto analytical column betasil phenylhexyl detection esi tandem mass spectrometry quantification isotope dilution limit detection lod mug median concentrations small collective taken general population mug carboxy mepp mug mehp mug oxo mehp mug mehp mug carboxy mmhp presented method provide insights actual internal burden general population certain risk groups help explore human metabolism dehp occupational environmental toxicant great concern elsevier rights reserved
human metabolism pharmacokinetics ethyl alpha lauroyl arginate hydrochloride lae new antimicrobial agent use foods investigated using vitro vivo techniques lae lae respectively lae readily hydrolysed corresponding lauroyl arginine las incubation human plasma samples extent lae stable simulated gastric fluid simulated intestinal fluid rapidly hydrolysed las arginine conversion arginine oral doses lae propylene glycol administered human volunteers dose levels subjects subjects lae detected two plasma samples one individual higher dose level close limit quantification maximum plasma concentrations las generally occurred mean peak levels dose dose maximum concentrations arginine occurred earlier much higher levels las mean peak levels dose dose results showed humans lae rapidly metabolized naturally occurring dietary components lauric acid arginine elsevier ltd rights reserved
postnatal development intestine associated decline brush border lactase activity rodents similar adulthood hypolactasia phenomenon prevalent humans worldwide present study effect luminal proteases adult rat intestine studied vitro intestinal lactase activity saline control thyroxine insulin cortisone treated rat pups lactase levels determined enzyme analysis western blotting mrna levels encoding lactase determined northern blotting administration thyroxine days reduced lactase activity insulin treatment effect day old rat intestine however cortisone administration augmented lactase activity conditions western blot analysis showed decreased lactase signal corresponding kda protein band thyroxine treated animals however intensity lactase signal high cortisone treated animals compared controls mrna levels encoding lactase showed mrna transcript saline hormone treated rats mrna levels encoding lactase increased cortisone treated animals reduced thyroxine injected pups compared controls microvillus membranes saline thyroxine insulin treated rats upon incubation luminal wash adult rat intestine showed significant decline lactase activity findings suggest thyroxine insulin cortisone induced changes lactase expression suckling rat intestine make susceptible luminal proteases may part responsible observed maturational decline lactase activity adult rat intestine
paper presents retrospective study ftir prostate cancer spectroscopy related tissues cell biology since vibrational spectroscopy delicately sensitive biochemical composition sample variations therein possible monitor metabolic processes tissue cells construct spectral maps based thousands collected spectra reveal information tissue structure distribution cellular components metabolic activity health condition cells tissues addition rapid collection reliable data powerful ability structure elucidation spectroscopy need rapid diagnosis traditional biopsy subject sampling inter observer potentiated infrared way new type analysis based optical examination objective conventional colour methods elsevier rights reserved
ecorv dna methyltransferase methylates first adenine gatatc recognition sequence presumed methylation proceeds nucleotide flipping mechanism crystal structure available confirm popular solution phase assay nucleotide flipping employs fluorescent adenine analogue aminopurine substituted methylation target site substantial increase fluorescence intensity enzyme binding indicates flipping however appeared fail ecorv since substituted non target adenine recognition sequence showed much greater intensity increase target site anomaly resolved recording fluorescence decay shows target indeed flipped enzyme fluorescence quenched interaction aromatic residues catalytic site whereas bending duplex non target site alleviates inter base quenching exposes solvent elsevier rights reserved
telomere length analysis greatly simplified quantitative flow cytometry technique fish flow method fluorescein labeled synthetic oligonucleotide complementary telomere terminal repeat sequence hybridized telomere sequence resulting fluorescence measured flow cytometry technique supplanted traditional laborious southern blot telomere length measurement techniques many laboratories allows single cell analysis telomere length high throughput sample formats nevertheless harsh conditions required telomere probe annealing degrees made difficult successfully combine technique simultaneous immunolabeling traditional organic fluorescent probes fluorescein phycoerythrin etc limited thermal stability survive high temperature annealing process despite efforts covalently crosslink antigen antibody fluorophore complex loss probe fluorescence made difficult measure fish flow complex lymphocyte populations generally forced investigators use fluorescent activated cell sorting pre separate populations laborious technique requires prohibitively large numbers cells study substituted quantum dots nanoparticles traditional fluorophores fish flow quantum dots demonstrated possess much greater thermal stability traditional low molecular weight phycobiliprotein fluorophores quantum dot antibody conjugates directed monocyte cell antigens found retain fluorescence following high temperature annealing step allowing simultaneous fluorescent immunophenotyping telomere length measurement since quantum dots narrow emission bandwidths able analyze multiple quantum dot antibody conjugates qdot simultaneously fish flow measurement assess age associated decline telomere length human monocytes cell subsets quantum dot immunolabeling mean decrease rate telomere length cells calculated year close previously reported values using traditional flow fish southern blotting modification traditional flow fish technique therefore allow simultaneous fluorescent immunophenotyping telomere length measurement permitting complex cell subset specific analysis small numbers cells without requirement prior cell sorting published elsevier
bioinformatics based screen chloroplast localized protein kinases noticed available protein targeting predictors falsely predicted chloroplast localization seems due interference terminal protein acylation particular importance protein kinases myristoylation found highly overrepresented proteome whereas myristoylation motifs almost absent known chloroplast proteins however abolishing myristoylation sufficient target kinases chloroplasts resulted nuclear accumulation instead contrast inhibition myristoylation calcium dependent protein kinase sufficient alter localization plasma membrane chloroplasts chloroplast localization ferredoxin nadp reductase rubisco activase could efficiently suppressed artificial introduction myristoylation palmitoylation sites federation european biochemical societies published elsevier rights reserved
embryo implantation complex initial step establishment successful pregnancy many mrnas shown differentially expressed rat uterus embryo implantation however expression profiles micrornas mirnas key post transcriptional regulator gene expression rat uterus pre receptive receptive phases still unknown mirna microarray used examine differential expression mirnas rat uterus pre receptive receptive phases twenty eight mirnas regulated mirnas regulated least twofold receptive phase rat uterus results confirmed northern blotting mir highly expressed rat uterus implantation period activation delayed implantation artificial decidualization enhanced mir level investigation revealed pro apoptotic factor genes bak bmf anti apoptotic factor gene bcl targets mir weak binding mir utr anti apoptotic factor gene mcl expression mir inhibited late apoptosis endometrial stromal cells may due stronger binding capacity mir utr pro apoptotic factors mir utr anti apoptotic factors collectively mir plays important role embryo implantation regulating pro apoptotic anti apoptotic factors mir may predominantly bind pro apoptotic factors leading inhibition cell apoptosis
although human mouth benefits remarkable mechanical properties susceptible traumatic damages exposure microbial attacks congenital maladies since human dentition plays crucial role mastication phonation esthetics finding promising efficient strategies reestablish functionality event disruption important dating back antiquity conventional dentistry offering evacuation restoration replacement diseased dental tissue however due limited ability short lifespan traditional restorative solutions scientists taken advantage current advancements medicine create better solutions oral health field coined regenerative dentistry new field takes advantage recent innovations stem cell research cellular molecular biology tissue engineering materials science etc review recently known resources approaches used regeneration dental oral tissues evaluated using databases scopus web science scientists used wide range biomaterials scaffolds artificial natural genes viral non viral vectors stem cells isolated deciduous teeth dental pulp periodontal ligament adipose tissue salivary glands dental follicle growth factors used stimulating cell differentiation order apply tissue engineering approaches dentistry although successful preclinical clinical partial regeneration dental tissues whole tooth engineering still seems far fetched unless certain shortcomings addressed elsevier rights reserved
european academy allergy clinical immunology eaaci junior members comprise largest eaaci section around clinicians scientists years age working field allergy clinical immunology junior member collaboration clinical translational allergy journal mutually beneficial relationship providing junior members eaaci excellent opportunities publish work journal enhance visibility respective field get involved journal related activities processes future collaboration grow consolidation activities also implementation new initiatives platform discussing publishing junior members dissertations journal cta perspective collaboration presents opportunity promote new generation allergists experience conducting presenting research improved skills critical review
genetic variation major histocompatibility complex mhc known affect disease resistance many species investigations mhc diversity populations wild species focused antigen presenting class molecules due known polymorphic nature genes role molecules play pathogen recognition studies mhc haplotype variation turkey meleagris gallopavo limited study designed examine mhc diversity group eastern wild turkeys meleagris gallopavo silvestris collected population expansion following reintroduction species southern wisconsin usa southern blotting class probes single nucleotide polymorphism snp genotyping used measure mhc variation snp analysis focused single copy mhc genes flanking highly polymorphic class genes southern blotting identified class phenotypes whereas snp analysis identified snp haplotypes occurring combined genotypes results show genetic diversity estimates based rflp southern blot analysis underestimate level variation detected snp analysis sequence analysis mitochondrial loop identified mitochondrial haplotypes mitotypes sampled birds results show wild turkeys located southern wisconsin genetically diverse mhc originate several maternal lineages
peyronie disease localized disorder connective tissue tunica albuginea whose etiology elucidated although several studies implicated genetic susceptibility mechanical trauma triggering events underlying molecular mechanisms remain largely unknown aquaporin aqp water channel protein potentially implicated connective tissue resistance mechanical stress acting primarily increasing tension within collagen network although represents potentially attractive molecular target date studies ever addressed whether aqp detectable differentially expressed patients herein present study immunohistochemical biochemical approaches able detect aqp expression control affected patients demonstrated aqp like immunoreactivity expression significantly increased plaques patients controls implying aqp overexpression might consequence localized maladaptive response connective tissue repeated mechanical trauma summary data support idea aqp might represent potentially useful biomarker mechanical injury promising target treatment
upsurge fever cases unknown origin resembling dengue leptospirosis reported havelock andaman nicobar islands important tourism spot may investigations carried determine aetiology describe epidemiology outbreak data fever cases attending primary health centre phc havelock showed average number cases reporting per week last years confidence interval total patients suspected cases diagnosed denv infection based positive enzyme immunoassay reverse transcriptase polymerase chain reaction overall attack rate cases population ranged different villages nucleotide sequencing showed virus responsible denv denv first detected andaman nicobar islands among wharf workers port blair within year spread havelock island separated south andaman nautical miles
stroke leading cause disability although significant progress area medical surgical thrombolytic technologies neuroprotective agents prevent secondary cerebral injury minimize disability remain limited limited success reported preclinical clinical trials evaluating variety compounds review authors discuss date information regarding underlying molecular biology stroke well strategies aim mitigate complex signaling cascade results historical research trials involving methyl aspartate amino hydroxy methyl isoxazole propionate receptor antagonists clomethiazole antioxidants citicoline nitric oxide immune regulators laid groundwork current progress addition recent studies involving therapeutic hypothermia magnesium albumin glyburide uric acid variety treatments provided options use neuroprotective agents combination existing thrombolytic treatments may one many exciting areas development although past trials neuroprotective agents ischemic stroke limited significant insights mechanisms stroke animal models trial design incrementally improved approaches future therapies
purpose labor thought positively influence immune system development offspring studies investigating impact different modes delivery maternal immune system cells scarce therefore aim study investigate effect labor maternal peripheral blood cell subsets recently described regulatory cells methods cross sectional study comparing absolute counts percentages peripheral blood cell subsets maturation activation profiles regulatory cells healthy pregnant women delivered newborns via elective cesarean labor spontaneous vaginal delivery labor cells characterized using flow cytometry results found compared women elective cesareans spontaneous vaginal deliveries significantly lower absolute counts cells median cells interquartile range iqr iqr natural killer like nkt like cells median cells iqr iqr peripheral blood significant differences particularly regulatory cells identified study groups conclusion labor seem major impact maternal peripheral blood cell subsets regulatory cells
prostate cancer known frequently recur bone however dormant cells switch phenotype leading recurrent tumor remains poorly understood isolated two syngeneic cell lines indolent aggressive vivo selection implanting pcmm stem like cells tibial bones found indolent cells retained dormant phenotype whereas aggressive cells grew rapidly bone vivo growth rates cells culture similar suggesting role tumor microenvironment regulation dormancy recurrence indolent cells found secrete high level secreted protein acidic rich cysteine sparc significantly stimulated expression bmp bone marrow stromal cells secreted bmp kept cancer cells dormant state inducing senescence reducing stemness activating dormancy associated mapk signaling expression cancer cells importantly found sparc epigenetically silenced aggressive cells promoter methylation azacytidine treatment reactivated expression furthermore high sparc promoter methylation negatively correlated disease free survival prostate cancer patients also found cox inhibitor regulated dnmts increased expression sparc led tumor growth suppression bone vivo findings suggest sparc plays key role maintaining dormancy prostate cancer cells bone microenvironment
background erlotinib orally active antitumor agent analyses vitro using human liver microsomes recombinant enzymes showed erlotinib metabolized primarily cypa secondary contribution cypa methods computer based simulation model simcyp predicted cypa contributed similar metabolic elimination erlotinib cypa responsible similar drug drug interaction study therefore conducted erlotinib potent cypa inhibitor ketoconazole healthy male volunteers evaluate impact cypa inhibition erlotinib exposure results ketoconazole caused almost two fold increase erlotinib plasma area concentration curve maximum plasma concentration consistent simcyp prediction two fold increase erlotinib auc validating primary similar role cypa erlotinib elimination conclusion prediction clinically important drug drug interaction simcyp using vitro human metabolism data powerful tool early clinical development ensure safe administration anticancer drugs often administered maximum tolerated doses drugs part palliative treatment regimen
purpose review review recent work potential mechanisms underlying paradoxical positive association consumption non nutritive sweeteners nns weight gain recent findings several potential mechanisms mutually exclusive hypothesized first dissociating sweetness calories nns could interfere physiological responses control homeostasis second changing intestinal environment nns could affect microbiota turn trigger inflammatory processes associated metabolic disorders third interacting novel sweet taste receptors discovered gut nns could affect glucose absorptive capacity glucose homeostasis latter mechanism received attention recently animal studies found nns activate gut sweet taste pathways control incretin release upregulate glucose transporters human studies found least healthy fasted individuals sole interaction nns sweet taste gut receptors insufficient elicit incretin responses reasons discrepancy different studies unknown could related species mammal tested dose nns used summary whether nns metabolically inactive previously assumed unclear research potential effects nns human metabolism warranted
multi scale modelling approach powerful mathematical technique simulating analyzing complex biological systems human body tool help study interactions various networks living organism cellular level population scale one framework paper generic mathematical model developed describes human metabolism serum metabolites integrated chosen set human metabolic networks new computational approach presented solving resulting dynamic problem using parsimonious flux balance analysis pfba illustrate performance proposed approach human hepatocyte genome scale model selected metabolic network included simulation results show proposed approach promise respect computational efficiency convergence demonstrate potential application developed model prediction amino acid biomarkers set inborn errors metabolism iem considered example simulations performed rising matlab cobra toolbox framework potential simulate various human metabolic disorders help diagnosis associated human diseases suggest novel treatment strategies addition opens door new opportunities personalized medicine ifac international federation automatic control hosting elsevier ltd rights reserved
lipolysis reaction carried lipases water lipid interface complex process including enzyme conformational changes adsorption desorption equilibrium substrate hydrolysis mixed monomolecular films lipase inhibitor orlistat dicaprin used investigate adsorption dog gastric lipase dgl followed hydrolysis dicaprin combined study two essential catalysis steps made possible thanks highest affinity dgl orlistat dicaprin fact inhibition dgl orlistat reversible upon dgl binding mixed dicaprin orlistat monolayers increase surface pressure reflecting lipase adsorption first recorded limited amounts orlistat allowed maintain dgl inactive dicaprin period time sufficient determine dgl adsorption desorption rate constants decrease surface pressure reflecting dicaprin hydrolysis product desorption observed slow hydrolysis covalent dgl orlistat complex complete rate dicaprin hydrolysis recorded using surface barostat technique based kinetic model describing inhibition orlistat activity dgl mixed dicaprin orlistat monolayer spread air water interface combined surface pressure measurements possible monitor dgl adsorption lipid water interface substrate hydrolysis course single experiment allowed assess cat ratio dgl acting dicaprin monolayer showing mixed monolayers containing low fraction orlistat similar pure dicaprin monolayers elsevier masson sas rights reserved
avibactam beta lactamase inhibitor clinical development combined beta lactam partners treatment bacterial infections comprising gram negative organisms avibactam structural class inhibitor contain beta lactam core maintains capacity covalently acylate beta lactamase targets using tem enzyme characterized avibactam inhibition measuring rate acylation rate deacylation deacylation rate min allowed investigation deacylation route tem using nmr showed deacylation proceeds regeneration intact avibactam hydrolysis tem four additional clinically relevant beta lactamases shown release intact avibactam acylated showed avibactam covalent slowly reversible inhibitor unique mechanism inhibition among beta lactamase inhibitors
repetitive sequence based rep polymerase chain reaction pcr inter simple sequence repeat issr pcr used molecular type pseudomonas syringae syringae pss strains isolated barley wheat plants bacterial black node symptoms grown different locations six different seed production districts japan eighteen genomic fingerprinting genotypes obtained combined results box rep gtg pcr indicating pss population japan high genetic diversity result based logistic regression indicated population genotype significantly related seed producing district epidemic pss strains fields originated mainly seed infection study applicable future studies molecular epidemiology bacterial plant diseases multiple infection routes
background copd patients susceptible exacerbations others mechanisms underlying differences susceptibility well understood hypothesized altered cell mediated immune responses may underlie propensity suffer frequent exacerbations copd methods peripheral blood mononuclear cells pbmcs obtained stable copd patients eight frequent exacerbators diary card exacerbations year infrequent exacerbators diary card exacerbations year detailed multi parameter flow cytometry used study differences innate adaptive systemic immune function frequent infrequently exacerbating copd patients results copd patients mean age years fev predicted pbmcs frequent exacerbators contained lower frequencies central memory cells tcm compared infrequent exacerbators observation also apparent absolute numbers tcm cells lambda lambda pbmcs contained lower frequency effector memory cells expressing hla human leukocyte antigen related compared copd patients conclusion differences adaptive systemic immune system might associate exacerbation susceptibility frequent exacerbator copd phenotype differences include fewer central memory cells effector memory cells
three sympatric springtail species south shetland islands archipelago maritime antarctic analysed common biogeographic evolutionary framework study designed compare population genetic structure using molecular marker haplotype data mitochondrial cox gene obtained seven populations folsomotoma octooculata compared data obtained previous studies current one sympatric species cryptopygus antarcticus antarcticus friesea grisea molecular data obtained consistent hypothesis species present archipelago since well last glacial maximum around ybp early diversifications appear linked known interglacial periods region springtails may survived last glacial cycle local refugia dispersed subsequently ice free ground exposed current interglacial period populations different species diversified different times although within pleistocene epoch propose earliest diversification haplotypes three springtails archipelago occurred local refugia livingston subsequent spread haplotypes throughout south shetland islands
adjuvants substances added vaccines improve immunogenicity used years aluminum first adjuvant human vaccines proved insufficient develop vaccines could protect new challenging pathogens hiv malaria new adjuvants new combinations adjuvants adjuvant systems opened door delivery improved new vaccines emerging difficult pathogens adjuvant systems concept started serendipity access new developments technology microbiology immunology instrumental dicephering knowledge opens door rational vaccine design implications developing new better vaccines
variety methods developed measure soil biological activity methods suited produce generally accepted results give relative information ecological status soil soil enzymatic activity assays one way measure ecosystem status soils technique quite simple produces reproducible results nowadays practical importance influence agro chemicals industrial waste heavy metals well soil fertility management measured especially search urease inhibitor particular interest order reduce ammonia losses soils soil enzymes reported useful soil quality indicators due relationship soil biology operationally practical sensitive integrative ease measure described biological fingerprints past soil management relate soil tillage structure focus article provide review soil enzyme activity biological process level indicator impacts natural anthropogenic activities soils knowledge soil enzymology applicable bioindicator human endeavour ecosystem perturbation agricultural practices xenobiotic pollution
previous studies demonstrated bacterial species capable transforming complex chemical substances several species native human gastrointestinal tract active postmortem decomposition potential cause biotransformations affecting compound metabolite ratios within human body especially death investigation postmortem effects could supply valuable information especially concerning compound identification confirmation purpose research investigate effects escherichia coli bacteroides fragilis clostridium perfringens diazepam flunitrazepam reinforced clostridial medium compare bacterial biotransformation products human metabolism decrease diazepam concentration pre post incubation observed samples inoculated escherichia coli well bacteroides fragilis however corresponding increase concentration monitored human metabolites flunitrazepam demonstrated greater concentration loss incubated individual bacterial species well mixed culture samples incubated bacteroides fragilis clostridium perfringens mixed culture resulted nearly complete conversion flunitrazepam increased aminoflunitrazepam concentrations accounted majority conversion however discrepancies mass balance reaction suggested possibility minor metabolite monitored current analysis experiments served pilot study proof concept adapted applied realm possibilities ultimately methodology would ideal study compounds toxic lethal animal human metabolic investigations copyright john wiley sons ltd
molt inhibiting hormone mih member crustacean hyperglycemic hormone chh family inhibits synthesis ecdysteroid organ plays significant role regulation molting growth crustaceans complete cdna sequence encoding mih ers mih genbank accession cloned eyestalk chinese mitten crab eriocheir sinensis races pcr cloning full length cdna consists open reading frame encoding amino acids containing amino acid mature peptide deduced amino acid sequence contains typical chh domain transcripts ers mih mrna detected eyestalk northern blotting production purified recombinant ers mih rers mih expressed escherichia coli esi analysis showed two peptide fragments recombinant protein identical deduced amino acid sequence ers mih vitro assay sinensis yos cgmp mediated suppression rers mih ecdysteroidogenesis could observed accumulation cgmp yos showed concentration dependent manner within nmol rers mih ecdysteroid secretion inhibited significantly range nmol rers mih furthermore significant inhibition effect ecdysteroid releasing shown cgmp analog cgmp concentration rose nmol study would facilitate investigate roles mih molt cycle regulation elsevier inc rights reserved
life know heavily relies biological catalysis fact nonromantic version life could considered series chemical reactions regulated guarding principles thermodynamics ancient times beating heart good sign vitality however actually presence active enzymes counts though usually pay attention history enzymology old humanity dates back ancient times paper dedicated early moments remarkable science touched lives past make life lot efficient humanity future almost always delicate fundamentally essential relationship mankind enzymes challenged alien hostile nature full predators prehistoric men soon discovered medicinal properties plants trial error fact accidently discovered enzyme inhibitors thus crude terms kindled sparkling area research plant derivatives acted enzyme inhibitors helped prehistoric men pursuit survival protection predators hunting fishing later history underlying purposes survival increasing quality life stayed intact ways means enzymology experienced massive transformation trial error methodology ancients replaced rational scientific theories
vitamins essential micronutrients whose deficiencies widespread particularly among underprivileged play key roles human metabolism prevention vitamin deficits best solved ingesting wide range good quality foods use appropriately fortified foods vitamin supplementation option must used cautiously minimize risks toxicity adverse effects resulting interactions medications health status age life style factors complications emanating genetic background ideally clinical evaluation subject precede judicious use vitamin supplements
human embryonic lung fibroblasts hel cells widely used normal cell studies cell biology easily maintained resting phase aimed discover compounds exhibit cytotoxicity hel cells dividing phase resting phase cytotoxicity compound hel cells either resting phase dividing phase determined mtt assay ratios cells resting phase cells dividing phase rrd compounds compared selected compounds exhibited toxic effects hel cells dividing phase chemical library containing anticancer drugs enzyme inhibitors rrd values compounds widely distributed paclitaxel docetaxel clinically used anticancer drugs rrd values larger hand rrd value dimethyl sulfoxide organic solvent cytotoxic effect paclitaxel hel cells dividing phase attenuated aphidicolin hydroxyurea nocodazole confirming cytotoxic effects paclitaxel dependent cells dividing phase thapsigargin whose rrd value third highest rrd value library exhibited therapeutic effects mouse model fma ascites carcinoma suggest compounds high rrd values hel cells candidate anticancer chemotherapy seeds
lung cancer low survival rate leading cause cancer associated mortality worldwide smoking air pollution major causes lung cancer however numerous studies demonstrated genetic factors also contribute development lung cancer family history lung cancer increases risk disease smokers never smokers review focuses familial lung cancer particular familial aggregation lung cancer development familial lung cancer involves shared environmental genetic factors among family members familial lung cancer represents good model investigating association environmental genetic factors well identifying susceptibility genes lung cancer addition studies familial lung cancer may help elucidate etiology mechanism lung cancer may identify novel biomarkers early detection diagnosis targeted therapy improved prevention strategies review presents aetiology molecular biology lung cancer systematically introduces discusses several aspects familial lung cancer including characteristics familial lung cancer population based studies familial lung cancer genetics familial lung cancer
concrete corrosion one significant problems affecting valuable sewer infrastructure global scale problem occurs aerobic zone sewer layer surface corrosion develops exposed concrete surface typically lowered around pristine concrete acidophilic microorganisms become established biofilms within concrete corrosion layer enhance loss concrete mass recently acidophilic community considered comprise relatively species microorganisms however biodiversity corrosion community recognized extensive varying different sewer environmental conditions diversity acidophiles corrosion communities includes chemolithoautotrophs chemolithoheterotrophs chemoorganoheterotrophs activity microorganisms strongly affected levels sewer gas phase although organic matter iron corrosion layer influence acidic ecosystem paper briefly presents conditions within sewer lead development concrete corrosion environment review focuses acidophilic microorganisms detected sewer corrosion environments summarizes proposed functions physiology especially relation corrosion process knowledge first review acidophilic corrosion microbial communities ecology environmental conditions available considered ecological studies sewer corrosion limited however possible summarize important metabolic functions different acidophilic species detected sewer concrete corrosion layers evident microbial functions acidic sewer corrosion environment linked occurring analogous acidic environments acid mine drainage bioleaching
two tenuiviruses rice stripe virus rsv rice grassy stunt virus rgsv found infect rice reovirus rice ragged stunt virus rrsv infection tenuiviruses recruited nucleotides sized capped rna leaders rrsv total rrsv rgsv rrsv rsv chimeric mrna clones respectively sequenced analysis sequences suggested scenario consistent previously reported data related viruses capped leader rnas end complementary viral template preferred upon base pairing leaders prime processive transcription directly one several cycles priming realignment repetitive prime realign interestingly rsv appeared higher tendency use repetitive prime realign rgsv even leader derived rrsv rna combining relevant data reported previously points towards intrinsic feature rsv elsevier inc rights reserved
cadmium accumulation rice subsequent transfer food chain major environmental issue worldwide understanding transport processes management aiming reduce uptake accumulation rice may help improve rice growth grain quality moreover thorough understanding factors influencing accumulation helpful derive efficient strategies minimize rice article reviewed transport mechanisms rice factors affecting uptake including physicochemical characters soil ecophysiological features rice discussed efficient measures immobilize soil reduce uptake rice including agronomic practices bioremediation molecular biology techniques findings contribute ensuring food safety reducing risk human beings elsevier ltd rights reserved
stem cell therapy promising approach treatment ischemic heart disease via replenishing cell loss myocardial infarction preclinical studies clinical trials indicated cardiac function improved consistently modestly cell based therapy mainly attributed low cell survival rate engraftment functional integration became major challenges regenerative medicine recent years several new cell types developed regenerate cardiomyocytes novel delivery approaches helped increase local cell retention new strategies cell pretreatment gene based therapy tissue engineering extracellular vesicles application immunologic regulation surged brought improved cell survival functional integration leading better therapeutic effects cell transplantation review summarize new strategies targeting challenges cardiac regenerative medicine discuss recent evidences may hint effectiveness future clinical settings
previously reported nucleotide sequence cdna cloned unicellular green alga dunaliella salina however nucleotide sequence gene reported far present study cloning characterization nucleotide sequence gene copy expression undertaken coding sequence gene found interrupted five introns respectively introns found conserved positions compared chlamydomonas reinhardtii gene salina cdna inserted prokaryotic expression plasmid pet transformed coli recombinant expressed protein purified coli immunized rabbit indirect elisa coated illustrated rabbit antisera titration western blotting assays confirmed prepared rabbit antibodies could recognize recombinant protein southern blotting results showed one copy present genome salina expression change throughout dnualiella cell cycle
following recent progress super resolution microscopy past decade massive amounts redundant single stochastic trajectories available statistical analysis flows trajectories molecules proteins sample cell membrane interior high time space resolution several statistical analyses developed extract information contained data biophysical parameters underlying stochastic motion reveal cellular organization trajectories reveal hidden subcellular organization review statistical analysis trajectories based classical langevin equation serves model trajectories parametric nonparametric estimators constructed discretizing stochastic equations allow recovery tethering forces diffusion tensors membrane organization measured trajectories differ physical ones localization noise modeling data analysis automatic detection algorithms serve extract novel biophysical features potential wells substructures rings unprecedented spatiotemporal resolution also possible reconstruct surface membrane biological cell statistics projected random trajectories
viruses must continuously evolve hijack host cell machinery order successfully replicate orchestrate key interactions support persistence type human immunodeficiency virus hiv prime example viral persistence within host plagued human population decades recent years advances cellular imaging molecular biology aided elucidation key steps mediating hiv lifecycle viral pathogenesis super resolution imaging techniques stimulated emission depletion sted photoactivation localization microscopy palm instrumental studying viral assembly release cell cell transmission cell free viral transmission moreover powerful methods forster resonance energy transfer fret bimolecular fluorescence complementation bifc shed light protein protein interactions hiv engages within host hijack cellular machinery specific advancements live cell imaging combination use multicolor viral particles become indispensable unravelling dynamic nature virus host interactions current review outline novel imaging methods used study hiv lifecycle highlight advancements cell culture models developed enhance understanding hiv lifecycle
background ever increasing knowledge areas cell biology immune system mechanisms cancer allowing new phase immunotherapy develop aim cancer vaccination activate host immune system success observed particularly use bcg vaccine bladder cancer immunostimulant reovirus orphan virus proven oncolytic virus vitro vivo tumour cell lines found susceptible reovirus infection currently phase iii clinical trials shown induce immune responses tumours low toxicities methods study reovirus examined two main approaches vivo mice using melanoma lewis lung carcinoma llc models initially mice treated intratumourally reovirus immune responses determined cytokine analysis mice also vaccinated using cell based reovirus vaccine subsequently exposed tumourigenic dose cells llc using cell based reovirus vaccine established tumours treated subsequent immune responses virus retrieval investigated results upregulation several cytokines observed following treatment replication competent virus also retrieved treated tumours varying levels cytokine upregulation observed replication competent virus retrieved vaccine treated mice prolongation survival delayed tumour growth observed models immune response reovirus either using reovirus alone cell based vaccine also observed mice conclusion study provides evidence immune response tumours using cell based reovirus vaccine tumour models investigated llc cytokine induction observed prolongation survival almost cases may suggest new method using reovirus clinic
pectinolytic bacteria genus dickeya former erwinia chrysanthemi belonging dickeya dianthicola dickeya solani species causative agents blackleg soft rot diseases europe recently solani isolated frequently potato plants symptoms blackleg soft rot solani strains shown cause severe disease symptoms potato plants dianthicola especially higher temperature also able develop blackleg disease lower inoculum levels presented study compared phenotypic features fifteen solani strains isolated countries different climatic conditions poland finland israel also examined three dianthicola strains comparison performed determine influence strain origin temperature incubation ability strains macerate potato tissue major virulence factors pectinolytic cellulolytic proteolytic activities siderophore production motility polish solani strains showed higher activities cell wall degrading enzymes finnish israeli strains tested temperatures degrees observation correlated higher ability polish solani strains cause soft rot addition solani strains exhibited higher activity mentioned enzymes caused severe potato tuber maceration laboratory tests tested dianthicola strains collected results indicate although solani strains different climatic conditions identical pulse field gel electrophoresis pfge profiles addition fingerprint profiles obtained repetitive sequence based polymerase chain reaction rep eric box repetitive sequences differ examined phenotypic features especially activities pectinolytic cellulolytic proteolytic enzymes capacity macerate potato tuber tissue
ultraviolet uva irradiation induces various changes cell biology objective study determine effect vanillin uva irradiation induced damages sternness properties human adipose tissue derived mesenchymal stem cells hamscs uva antagonizing mechanisms vanillin also examined results revealed vanillin attenuated uva induced reduction proliferative potential sternness hamscs evidenced increased proliferative activity brdu incorporation assay upregulation stemness related genes oct nanog sox response vanillin treatment uva induced reduction mrna level hypoxia inducible factor hif alpha significantly recovered vanillin addition antagonizing effect vanillin uva found mediated reduced production pge inhibiting jnk mapk taken together findings showed vanillin could improve reduced stemness hamscs induced uva effect vanillin mediated upregulating hif alpha via inhibiting pge camp signaling therefore vanillin might used antagonizing agent mitigate effects uva elsevier ltd rights reserved
metabolic network reconstructions define metabolic information within target organism therefore used address incomplete metabolic information present study used computational approach identify human metabolites whose metabolism incomplete basis detection humans exclusion human metabolic network reconstruction recon candidate solutions composed metabolic reactions capable explaining metabolism compounds identified computationally global biochemical reaction database solutions characterized respect metabolites incorporated recon biological relevance detailed case studies show biologically plausible non intuitive hypotheses regarding metabolism compounds proposed semi automated manner approach similar novo network reconstruction subsequently experimentally validated one proposed hypotheses report corf previously identified candidate tumour suppressor gene encodes functional human gluconokinase results present study demonstrate semi automatic gap filling used refine extend metabolic reconstructions thereby increasing biological scope furthermore illustrate incomplete human metabolic knowledge coupled gene annotation order prioritize confirm gene functions
canine respiratory diseases commonly seen dogs along infections multiple respiratory pathogens including viruses bacteria virus infections even vaccinated dogs also reported clinical signs caused different respiratory etiological agents similar makes differential diagnosis imperative oligonucleotide microarray system developed study wild type vaccine strains canine distemper virus cdv influenza virus canine herpesvirus chv bordetella bronchiseptica mycoplasma cynos detected differentiated simultaneously microarray chip detection limit copy numbers cdv influenza virus chv bronchiseptica cynos respectively clinical test results nasal swab samples showed microarray remarkably better efficacy multiplex pcr agarose gel method positive detection rate microarray agarose gel among samples respectively cdv vaccine strain pathogen infections demonstrated microarray multiplex pcr agarose gel oligonucleotide microarray provides highly efficient diagnosis alternative could applied clinical usage greatly assisting disease therapy control elsevier rights reserved
purpose reviewcharcot marie tooth disease cmt one commonest inherited neuromuscular diseases population prevalence review cover recent advances genetics pathomechanisms cmt leading development rational therapies recent findingspathomechanistic therapeutic target advances cmt include identification erbb receptor signalling pathway therapeutic target cmta pharmacological modification unfolded protein response cmtb cmtd due mutations glycyl trna synthetase vascular endothelial growth factor mediated stimulation nrp receptor identified therapeutic target preclinical advances accompanied publication large natural history cohorts identification sensitive biomarker disease muscle mri able detect disease progression cmta year summaryadvances next generation sequencing technology cell biology animal models cmt paving way rational treatments combination robust natural history data identification sensitive biomarkers mean entering exciting therapeutic era field genetic neuropathies
salinity one major environmental factors limiting plant growth productivity ppase gene tsvp thellungiella halophila transferred cotton gossypium hirsutum sense antisense orientations control cauliflower mosaic virus camv promoter southern northern blotting analysis showed sense antisense tsvp integrated cotton genome expressed transgenic plants overexpressing vacuolar ppase much resistant nacl isogenic wild type plants contrast plants antisense line lower ppase activity sensitive salinity wild type plants overexpressing tsvp cotton improved shoot root growth photosynthetic performance transgenic plants accumulated soluble sugars root leaf tissues salinity conditions compared wild type plants lower membrane ion leakage malondialdehyde mda level transgenic plants suggest overexpression ppase causes accumulation vacuoles instead cytoplasm thus reducing toxic effects hand increased accumulation ions sugars decreases solute potential cells facilitates water uptake salinity important mechanism increased salt tolerance tsvp overexpressing cotton
background hepatocyte nuclear factor hnf plays central role differentiation process hepatic cells investigated effects overexpression hnf hepatic progenitor cells isolated fetal mouse liver transplantation cells mouse model liver fibrosis methods hepatic progenitor cells isolated embryonic day fetal mouse livers purified magnetic cell sorting remove hematopoietic cells transfected adenovirus mediated hnf cells analyzed expressions liver specific functions using reverse transcription polymerase chain reaction northern blotting hnf overexpressing hepatic progenitor cells injected recipient mice treated dimethylnitrosamine partial hepatectomy results days culture cells located center aggregates stained positive albumin peripheral cells cytokeratin adenovirus mediated hnf gene transfer resulted increases expressions hnf apolipoprotein apo apoc pregnane receptor messenger rna mice treated hnf transfected progenitor cells survived significantly longer control mice plasma levels albumin total cholesterol glucose higher mice treated cells transfected hnf control mice conclusions findings demonstrate adenovirus mediated hnf transfection induces differentiation hepatic progenitor cells hepatic parenchymal cells vitro cells may useful source cell transplantation liver diseases
major histocompatibility complex mhc good marker system geographical genetics since functional genes immune system likely affect fitness individual survival evolutionary potential population changing environment golden pheasant chrysolophus pictus wild phasianidae distributed central north china study used locus specific genotyping technique mhc iib genes golden pheasant combining microsatellites simple sequence repeat ssr mitochondrial dna mtdna loop region investigated demographic history illuminate genetic structure bird detail syr south yangtze river nyr north yangtze river lineages separated yangtze river defined genetic structure mhc iib nyr supposed refuge glacial period suggested diversity parameters ancient alleles region based hypothesis gene flow nyr syr proved three pieces evidence distinct demographic histories syr kept stable nyr experienced expansion specific affiliation genetic structure ssr mhc genes significant gene flow nyr syr moreover also found balancing selection combination three grouping regions north one grouping nyr pattern isolation distance ibd found mhc iib whereas ssr found relatively strong significant ibd several mechanisms evolution mhc iib genes including recombination historically positive selection trans species evolution concerted evolution shown molecular phylogenetic analysis overall results suggest yangtze river inferred geological barrier avian nyr might experience population expansion invaded neighboring region study contributes understanding effects geographic features contemporary patterns genetic variation golden pheasant china helps define adaptive unite avian elsevier inc rights reserved
measurement antioxidant enzyme activities great importance evaluation oxidative stress human metabolism sialic acids also vital bio markers diseases acute myocardial infarction diabetes present study antioxidant enzyme activities sod cat gsh free sialic acid fsa levels saliva determined training elite turkish judoists etj according results antioxidant enzyme activities post exercise values significantly higher pre exercise values major finding study fsa levels also increased significantly superoxide radical anion might effectively dismutated hydrogen peroxide elevated sod activity accordingly suggests cat higher increasing rate efficient gsh decomposition hydrogen peroxide conclusion increase antioxidant enzyme activities might caused elevation fsa levels training excreted sialic acids saliva might important role removal hydrogen peroxide since increase fsa levels saliva found well accordance antioxidant enzymes fsa may concluded alternative oxidative stress marker athletes
polyphosphate polymer phosphate residues linked high energy phosphoanhydride bonds despite highly conserved throughout nature function poorly understood show dictyostelium cells accumulate extracellular polyphosphate acts inhibit proliferation high cell densities shaking culture extracellular polyphosphate concentrations increase cell density increases concentration polyphosphate observed stationary phase added cells mid log proliferation halted adding exopolyphosphatase cell cultures stationary phase conditioned medium decreases polyphosphate levels abrogates anti proliferative effect cells show saturable binding polyphosphate suggesting presence cell surface polyphosphate receptor extracellular polyphosphate accumulation potentiated decreased nutrient levels potentially means anticipate starvation loss dictyostelium polyphosphate kinase ddppk causes intracellular polyphosphate levels become undetectable negatively affects fitness cytokinesis germination however cells lacking ddppk accumulate approximate normal levels extracellular polyphosphate suggesting additional means synthesis found cells lacking inositol hexakisphosphate kinase responsible synthesis inositol pyrophosphates reach abnormally high cell densities show decreased extracellular polyphosphate levels two different enzymes thus appear mediate synthesis dictyostelium extracellular polyphosphate used signal autocrine negative feedback loop regulate cell proliferation
understanding rationale generation pool highly differentiated effector memory cells displaying weakened capacity scrutinize peptides complexed major histocompatibility class molecules via cell receptor lacking signal receptor yet expressing highly diverse array innate receptors natural killer receptors interleukin receptors damage associated molecular pattern receptors among others one challenging issues contemporary human immunology prevalence differentiated cells also known kir like cells innate cells non lymphoid organs tissues peripheral blood healthy elderly namely centenarians also stressful chronic inflammatory conditions suggests merely end line dysfunctional cells experienced cells highly diverse capable sensing variety tcr independent signals enables respond fine tune tissue homeostasis
aims study observe effects vacuum sealing drainage vsd three different negative pressures wound healing rate macrophage count expression hyaluronic acid well receptor seawater immersed blast injury wounds sibiw determine optimal negative pressure value minipig sibiw model different suction pressures routine dressing applied histological immunohistochemical comparisons well molecular biology methods performed compare wound healing conditions macrophage count levels wound healing rate vsd group significantly higher control group mmhg group exhibiting best effects macrophage count vsd group higher control group level fluctuation higher vsd group mmhg mmhg groups showing significant fluctuation expressed full thickness wound limbic tissues higher treatment group control group mmhg group obvious expression vsd significantly improved healing ability increased macrophage count content also promoted expression mmhg optimal negative pressure value
arctigenin previously proven inhibit cell differentiation thereby attenuate colitis mice regulating activation mechanistic target rapamycin complex mtorc present study performed address underlying mechanism view estrogen receptor specific antagonist phtpp sirna beta largely diminished inhibitory effect arctigenin mtorc activation cell lines primary cells polarization condition suggesting arctigenin functioned beta dependent manner moreover arctigenin recognized agonist beta could bind beta moderate affinity promote dissociation beta hsp complex nuclear translocation phosphorylation beta increase transcription activity following activation beta arctigenin inhibited activity mtorc disruption beta raptor mtor complex assembly deficiency beta markedly abolished arctigenin mediated inhibition cell differentiation colitis mice activation beta inhibition mtorc activation response arctigenin abolished phtpp treatment conclusion beta might target protein arctigenin responsible inhibition mtorc activation resultant prevention cell differentiation colitis development
complex carbohydrates ubiquitous kingdoms life major components plant cell wall constitute rich renewable carbon source biotechnological transformation fuels chemicals materials also form important energy source part healthy human diet contexts significant sustained interest understanding microbes transform substrates classical perspectives microbial polysaccharide degradation currently augmented recent advances discovery lytic polysaccharide monooxygenases lpmos polysaccharide utilization loci puls fundamental discoveries carbohydrate enzymology advancing biological understanding well informing applications industrial biomass conversion modulation human gut microbiota mediate health benefits
objectives hypothesisplacement tympanostomy tubes recurrent chronic otitis media commonly performed ambulatory procedure united states etiologies speculated environmentally based studies suggested genetic component disease however large scale studies attempted define familial component objective study determine familial risk otitis media requiring tympanostomy tubes omwtt statewide population study designretrospective observational cohort study population based matched controls methodsusing extensive genealogical database linked medical records familial risk omwtt calculated relatives probands patients diagnosed omwtt compared random population controls matched sex birth year logistic regression models resultsthe median age time tympanostomy tube placement year interquartile range years first degree relatives patients omwtt primarily siblings fold increased risk omwtt second degree relatives fold increased risk extended relatives third fourth fifth degree showed fold increased risk conclusionsin largest population based study date significant familial risk confirmed omwtt suggesting otitis media may significant genetic component given increased risk found close well distant relatives could influenced shared environments given five times risk observed siblings understanding genetic basis omwtt interplay environmental factors may clarify etiology lead better detection disease treatments level evidenceb laryngoscope
diesel exhaust known induce tumours animals compounds found diesel exhaust nitrobenzanthrone nba particularly powerful mutagen recently showed nba genotoxic vivo rats forming specific dna adducts derived nitroreduction study panel genetically engineered chinese hamster cell lines expressing various human cytochrome cyp enzymes cypa cypa human nadph cyp oxidoreductase cypor used identify cyp enzymes involved metabolic activation nba analyzed formation specific dna adducts postlabelling exposing cells mum nba similar pattern total four distinct nba dna adducts found cells identical detected previously dna rats treated nba vivo total adduct levels ranged using nuclease adducts per nucleotides using butanol enrichment comparison dna binding different vmz derived cells revealed human cypor cypa involved metabolic activation nba furthermore dose dependent high adduct levels detected exposure mum nba subclone vnh exhibits high activities nitroreductase acetyltransferase results suggest nitroreduction major pathway human bioactivation nba moreover acetylation initially formed hydroxy arylamine intermediates may contribute high genotoxic potential nba elsevier ireland ltd rights reserved
known neutral cytosolic alpha mannosidase manc cleave alpha alpha alpha linked mannose residues stimulated cobalt inhibited furanose analogues swainsonine dideoxy imino mannitol dim enzyme involved degradation oligomannosides derived dolichol intermediates degradation newly synthesized glycoproteins immunological relationship demonstrated rat endoplasmic reticulum alpha mannosidase cytosolic alpha mannosidase fact antibodies raised soluble alpha mannosidase recognized membrane form alpha mannosidase cdna encoding mouse cytosolic alpha mannosidase obtained rzpd deutsches ressourcenzentrum fur genomforschung gmbh berlin germany comparison mouse genomic sequence cdna sequence revealed presence introns within cytosolic alpha mannosidase gene gene spans major transcription initiation site rna cleavage site transcription initiation site mouse cytosolic alpha mannosidase mapped bases upstream atg codon using race northern blotting analysis revealed expression major transcript tissues examined cos cells transfected cdna showed fold increase cytosolic alpha mannosidase activity enzyme activity stimulated cobalt inhibited dim edta furthermore demonstrated expressed enzyme active towards radiolabeled substrate manglcnac giving final product manglcnac formation manglcnac isomer intermediate elsevier rights reserved
apolipoprotein apoe predominantly lipid transport protein involved membrane repair synaptic plasticity brain genotype associated late onset sporadic familial alzheimer disease expression increases injury takes place nervous system age related disorders including however clearly understood level apoe changes normal aging brain therefore analyzed effect age apoe protein mrna level cerebral cortex young adult old male akr strain mice western northern pcr results reveal level apoe protein mrna higher young compared adult remains unchanged old mouse cerebral cortex indicates normal aging apoe level maintained old similar adult suggests involvement factors maintaining apoe mediated brain functions old
plastid genome plants smallest gene rich three genomes cell one generally present highest copy number result obtaining plastid dna sequence particularly cost effective way discovering genetic information plant recently sequence information gathered way generally limited small portions genome amplified polymerase chain reaction recent advances sequencing technology stimulated substantial rate increase sequencing complete plastid genomes within last year number complete plastid genomes accessible public sequence repositories exceeded sudden flood data raises numerous challenges data analysis interpretation also offers keys potential insights across large swathes plant biology examine learnt far could learnt look data right way might gain tens thousands genome sequences surely arrive next years exciting new discoveries likely made interdisciplinary interfaces molecular biology ecology
simple high sensitive cholesterol amperometric biosensor based situ electropolymerization multi walled carbon nanotube polyaniline mwcnt pani nanocomposite electrodeposition platinum nanoparticle nano films onto glassy carbon electrode surface cholesterol oxidase immobilization constructed study preparation process modified electrode characterized cyclic voltammetry electrochemical impedance spectroscopy scanning electron microscopy chronoamperometry synergistic electrocatalytic activity mwcnt pani nanocomposites nano cholesterol biosensor exhibited excellent performance linear range detection limit signal noise ratio high sensitivity short response time within sec moreover reproducibility stability selectivity biosensor also investigated international union biochemistry molecular biology inc volume number pages
recently existence significant deposits brown adipose tissue bat human adults confirmed role human metabolism unknown could substantial inhibition cannabinoid receptor antagonist rimonabant associated activation bat thermogenesis weight loss mice rats role peripheral central activation bat merits investigation developed technique quantifying bat pet methods sections rat bat subcutaneous white adipose tissue wat stained uncoupling protein immunofluorescent staining binding radiolabeled antagonist fluoromethoxy phenyl phenylethyl amino trifluoromethyl phenyl pyrrolidin one fmpep bat vivo vitro assessed rats pet results found colocalized uncoupling protein bat neither protein found wat binding radiotracer bat sections wat vitro high displaceable pretreatment rimonabant deposits bat rats significant binding fmpep vivo indicating high density wat deposits negative fmpep consistent immunofluorescent staining vitro results conclusion fmpep pet quantify density noninvasively vivo rats therefore promising surrogate imaging biomarker assessing presence bat deposits well elucidating mechanism antagonist mediated weight loss
aim present study aimed evaluate impact caries activity key enzymes ultrastructure situ pellicle methods pellicle formation performed bovine enamel slabs intraoral exposure min accomplished caries active dmfs caries inactive dmfs individuals enzyme activities lysozyme peroxidase alpha amylase glycosyltransferase gtf situ pellicle resting saliva participants analyzed directly oral exposure addition simultaneous visualization enzymes extracellular glucans adherent bacteria carried fluorescent patterns analyzed fluorescence labeling diamidino phenylindole concanavalin staining addition distribution gtf ultrastructure pellicle examined gold immunolabeling transmission electron microscopy selected samples results enzyme activities amylase per oxidase lysozyme gtf detected enamel slabs active conformation neither exposure time caries activity impact enzyme activities gold immunolabeling indicated pellicle caries active subjects tends gtf molecules pellicles caries inactive active individuals revealed similar ultra structural pattern conclusion enzyme activities well pellicle ultrastructure high similarity caries active inactive subjects thereby oral exposure time significant influence reflects high uniformity initial phase bioadhesion min concerning enzymatic functions however tendency towards gtf caries active individuals karger basel
neurons largest cells body form subcellular compartments axons dendrites development adulthood building blocks must continually trafficked long distances maintain different regions neuron beyond building blocks signaling complexes also transported allowing example axons communicate soma critical roles signaling via ligand receptor complexes perhaps best illustrated context development known regulate polarization survival axon outgrowth dendrite development synapse formation however knowing much signaling occurring provide complete story location signaling significant impact functional outcomes therefore complex functionally important trafficking mechanisms place control precise spatial temporal aspects many signal transduction events turn many signaling events affect trafficking mechanisms setting intricate connection trafficking signaling review use neurotrophin receptors specifically trka trkb illustrate cell biology underlying links trafficking signaling briefly discuss concepts trafficking signaling intimately linked functional diverse signaling outputs protein play different roles receptor depending localization wiley periodicals inc develop neurobiol
significant progress past years achieved enzymology microbial degradation saccharification plant xylan cellulose abundant natural renewable polysaccharide several new types xylan depolymerizing debranching enzymes described microorganisms despite increasing variety known glycoside hydrolases carbohydrate esterases xylan structures still appear quite recalcitrant review focuses mode action different types depolymerizing endoxylanases cooperation xylosidase accessory enzymes breakdown complex highly branched xylan structures emphasis placed enzymatic hydrolysis alkali extracted deesterified polysaccharide well acetylated xylan isolated plant cell walls non alkaline conditions also shown combination selected endoxylanases debranching enzymes determine nature prebiotic xylooligosaccharides lead complete hydrolysis polysaccharide article also highlights possibility discovery novel xylanolytic enzymes construction multifunctional chimeric enzymes xylanosomes parallel increasing knowledge fine structure polysaccharide elsevier inc rights reserved
transcription export complex trex complex facilitates localization actively transcribing genes nuclear periphery also functions contribute generation export competent mrnps interactions general mrna nuclear export factor mex mtr trex complex based sac scaffold thp sem cdc sus bind trex subdivided two modules one thp semi bind sac region residues similar cdc two sus chains bind sac cid region residues similar complementary structural analyses using ray crystallography electron microscopy small angle ray scattering saccharomyces cerevisiae trex complex expressed using baculovirus infected cells indicated tpr like repeats sac region extend considerably towards terminus previously thought also indicate region sac cid sus cdc region cerevisiae complex structurally independent although density visible accounted similar kda angstrom resolution cryo reconstruction obtained region trex showed additional three putative helices extending towards sac terminus helices also seen angstrom resolution structure obtained ray crystallography summary statement describe expression purification structural characterization cerevisiae trex complex demonstrate sac tpr like repeats extensive previously thought cid regions appear defined spatial orientation mrc laboratory molecular biology published elsevier inc
clefting secondary palate one common human birth defects results failure palatal shelves fuse embryonic development palatogenesis traditionally considered highly conserved developmental process among mammalian species however cleft palate phenotypes humans considerably variable seen mice common animal model studying palatal development pathogenesis cleft palate investigation utilized macroscopic observations histology imaging techniques directly compare palate morphology oral nasal cavity palate closure mouse embryos human conceptuses showed mouse human palates display distinct morphologies attributable structural differences oral nasal cavity showed palatal shelves interact differently primary palate nasal septum hard palate region pharyngeal walls soft palate region palate closure mice humans knowledge morphological differences important improved translation findings mouse models human cleft lip palate ultimately enhance understanding human palatal morphogenesis pathogenesis cleft lip palate humans
cell fate determination differentiation neurogenesis myogenesis involve sequential expression several basic helix loop helix bhlh transcription factors expression neurod expression nscl nhh closely related many developing peripheral central neuronal cells suggesting epistatic relationship two bhlh transcription factor families neurogenesis investigate relationship murine neuroblastoma cell culture system single double knock mice neurod neurod utilized gain function loss function approaches respectively neurod neurod able induce transcription nscl vitro however able activate nscl transcription dna binding ability neurod essential nscl induction examine epistatic relationship vivo examined expression nscl nscl neurod neurod mice neurod compound mice situ hybridization pcr northern blotting expression nscl lower neurod mice decreased double mice however expression nscl change either single double mice results demonstrate neurod upstream regulator nscl gene nscl gene mice addition neurod involved regulatory pathway vivo elsevier inc rights reserved
metabolic investigation natural products great challenge unpredictable metabolic pathways little knowledge metabolic effects lack recommended analytical methodology herein combined strategy based ultrahigh performance liquid chromatography coupled electrospray ionization quadrupole time flight tandem mass spectrometry uhplc tof nuclear magnetic resonance nmr spectroscopy electronic circular dichroism ecd calculation developed employed human metabolism study gentiopicroside gps naturally hepato protective iridoid glycoside whole metabolic study consisted three major procedures first improved uhplc tof method used separate detect total gps metabolites obtained urine samples healthy male participants single oral dose gps second developed nmr method applied accurately identify molecular structures observed metabolites finally given associated stereochemistry may crucial factor metabolic activation absolute configuration reactive metabolites revealed chemical calculations based combined use pair diastereoisomers experimentally addressed bioreactive metabolites gps stereochemical determination completed whereas several novel metabolic transformations occurring via oxidation heterocyclization glucuronidation deglycosylation also observed results indicated gps undergo vivo metabolism based activation generate reactive molecules capable processing hepato protective activity
apricot prunus armeniaca one widely spread prunus species cultivated temperate zones important source vitamins sugars organic acids apricots also contain phytochemicals beneficial effects human metabolism however little known quality characteristics important moroccan local clones objective study evaluate quality twelve local clones therefore identify presenting important interesting quality traits quality parameters soluble solids content value total acidity ratio evaluated major carboxylic acid components apricot fruits detected quantified principal component analysis pca performed study correlation fruit quality parameters evaluate maturity stage clone effects considered decisive factors quality apricots fruits clones analyzed three maturity stages semi ripe commercially ripe tree ripe results showed malic citric acids predominant organic acids apricots among different maturity stages found malic acid ranged fresh weights citric acid varied quinic fumaric ascorbic acids also quantified apricot fruits significant levels vitamin ranged detected analyzed apricots remarkable variation observed quality parameters moreover significant correlations found variables ratio organic acids mainly citric malic acids genetic diversity found apricots clones according quality characteristics variability asset apricots sector development region marrakesh either fresh consumption processing different products elsevier rights reserved
spore photoproduct lyase spl repairs special thymine dimer thyminyl dihydrothymine commonly called spore photoproduct bacterial early germination phase exclusive dna photo damage product bacterial endospores generation swift repair spl responsible spores extremely high resistance early vivo studies suggested spl utilizes direct reversal strategy repair absence light research past decade established spl radical sam enzyme utilizes tri cysteine cxxxcxxc motif harbor cluster oxidation state cluster provides electron adenosylmethionine sam binds cluster bidentate manner fourth fifth ligands reductively cleave bond associated sulfonium ion sam generating reactive deoxyadenosyl radical radical abstracts pror hydrogen atom carbon initiate repair process resulting radical subsequently fragments generate putative thymine methyl radical accepts back donated atom yield repaired tpt sam suggested regenerated end catalytic cycle catalytic amount sam needed spl reaction atom source back donation step suggested cysteine residue bacillus subtilis spl atom transfer reaction leaves thiyl radical behind protein thiyl radical thus must participate sam regeneration process however thiyl radical abstracts atom regenerate sam unknown paper reviews discusses history latest progress mechanistic elucidation spl despite recent breakthroughs questions raised mechanistic understanding intriguing dna repair enzyme article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
growth microtubule dynamics cell cycle progression coordinated one unsolved mysteries cell biology maize mutant tangled known defects growth proper division plane orientation recently characterized cell cycle delay identified time lapse imaging used clarify relationship growth cell cycle proper division plane orientation tangled mutant fully rescued introduction cortical division site localized tangled yfp cyclinb destruction box fused tangled yfp generate line mostly rescued division plane defect still showed cell cycle delays expressed tangled mutant although intermediate growth phenotype wild type tangled mutant expected partially rescued plants grew well wild type siblings indicating mitotic progression delays alone alter overall growth data indicate division plane orientation together proper cell cycle progression critical plant growth
great part knowledge mammalian immunology established laboratory settings use inbred mouse strains enabled controlled studies immune cell molecule functions defined settings studies usually performed specific pathogen free spf environments providing standardized conditions contrast mammalians including humans living natural habitat continuously facing pathogen encounters throughout life influences environmental conditions signatures immune system experimental outcomes yet well defined thus transferability results obtained current experimental systems physiological human situation always matter debate studies elucidating diversity wild immunology imprintings detail comparing clean lab mice sparse applied multidimensional mass cytometry dissect phenotypic functional differences distinct groups laboratory pet shop mice source wild mice purpose developed antibody panel murine leukocyte subsets identification antibody panel assessing various cytokines established murine leukocyte populations easily identified diverse immune signatures indicative numerous pathogen encounters classified particularly pet shop mice lesser extent quarantine non spf mice compared spf mice addition unsupervised analysis identified distinct clusters associated strongly degree pathogenic priming including increased frequencies activated cells antigen experienced cell subsets study unravels complexity immune signatures altered physiological pathogen challenges highlights importance carefully adapting laboratory settings immunological studies mice including drug therapy testing international society advancement cytometry
liver plays decisive role regulation systemic inflammation chronic kidney disease particular liver reacts response uremic milieu oxidative stress endotoxemia decreased clearance circulating proinflammatory cytokines producing large number acute phase reactants experimental tools study inflammation underlying role hepatocytes crucial understand regulation contribution hepatic cytokines systemic acute phase response prolonged pro inflammatory scenario especially intricate setting chronic kidney disease since studying complex mechanisms inflammation vivo remains challenging resource intensive usually requires usage transgenic animals primary isolated hepatocytes provide robust tool gain mechanistic insights hepatic acute phase response since vitro technique features moderate costs high reproducibility common technical knowledge primary isolated hepatocytes also easily used screening approach describe enzymatic based method isolate primary murine hepatocytes describe assessment inflammatory response cells using elisa quantitative real time pcr
report danio rerio transposon named drtrt rerio transposon related complete sequence drtrt transposon base pairs length transposase putatively encodes amino acid protein harbors dde motif catalytic domain present evidence based searches publicly available genomes trt elements commonly occur vertebrates protozoa phylogenetic functional domain comparisons confirm trt constitutes new subfamily within family hallmark features premature termination codons within transposase presence expected functional domains occurrence bony fish transcriptome suggest trt might current recent activity species analysis showed activity trt elements species might arisen interestingly results also implied widespread distribution trt among fishes frog snakes result multiple independent events probably bony fishes snakes frog finally mechanisms underlying horizontal transfer trt elements discussed
graft versus host disease gvhd major complication hematopoietic stem cell transplantation associated high mortality severe cases skin one major organs affected acute chronic gvhd review aims elucidate basic characteristics gvhd role contribution dermatologists care patients condition
selection five chemotherapeutics diverse chemical structures modes action cisdiamminedichloroplatinum doxorubicin etoposide methotrexate vincristine four multidrug resistant cell line panels developed cancer cell lines different species human murine well tissue organ skin colon origin characterized low endogenous expression multidrug resistance mdr proteins high sensitivity anticancer agents used parental cell lines selection process resulted regulation several abc transporters abcb abcbla abcc abccl abcg abcg confirmed number molecular cell biology methods mdr protein expression pattern seemed mainly dependent drug used selection nut species tissue origin cell line pustulate cell panels used research model assess role mdr proteins pharmacokinetics novel drugs drug formulations elsevier inc rights reserved
differences metabolism tyrosine insects mammals present interesting example molecular evolution insects mammals possess fine tuned systems enzymes meet specific demands tyrosine metabolites however homologous enzymes involved tyrosine metabolism emerged many insect species without knowledge modern genomics one might suppose mammals generally complex insects require tyrosine precursor important catecholamine neurotransmitters melanin possess enzymes control tyrosine metabolism therefore question insects actually possess tyrosine metabolic enzymes quite interesting long known insects rely heavily tyrosine metabolism cuticle hardening innate immune responses evolutionary constraints likely key answers question terms melanogenesis mammals also possess high level regulation yet mammalian systems possess mechanisms detoxification whereas insects accelerate pathways like melanogenesis therefore must bear increased oxidative pressure research group opportunity characterize structure function many key proteins involved tyrosine metabolism insects mammals mini review give brief overview research tyrosine metabolic enzymes scope evolutionary perspective mammals comparison insects
article reviews recent advances ftir spectroscopy areas related natural tissues cell biology update previously published review applications spectroscopic methods employed analysis biological molecules summarizes widely used peak frequencies assignments aim review update consolidate previously published spectral database help researchers defining chemical structure biological tissues introducing important peaks present natural tissues precisely accurately spite applying different methods seems considerable similarity defining peaks identical areas ftir spectra result believed preparing unique collection frequencies encountered ftir spectroscopic studies provide substantial help future studies article included recent studies reported since previous publication considerable assistance added value focusing research defining chemical pathway progression different diseases
investigate inside dynamics solutions integrodifference equations understand genetic consequences population nonoverlapping generations undergoing range expansion obtain inside dynamics decompose solution neutral genetic components inside dynamics given spatiotemporal evolution neutral genetic components consider thin tailed dispersal kernels variety per capita growth rate functions classify traveling wave solutions either pushed pulled fronts find pulled fronts synonymous founder effect population genetics adding overcompensation dynamics fronts impact genetic diversity expanding population however growth functions strong allee effect cause traveling wave solution pushed front preserving genetic variation population case contribution neutral fraction computed simple formula dependent initial distribution neutral fractions traveling wave solution asymptotic spreading speed
ribosomal spacer pcr pcr highly resolving robust genotyping method aureus allows high throughput moderate costs therefore suitable used routine purposes best resolution data evaluation data management miniaturized electrophoresis system required together electrophoresis system house developed software freely available assignment pattern bands genotype standardized straight forward dna extraction simple boiling prep setting reactions easy run standard pcr machine pcr cycling common except prolonged ramping elongation times compared spa typing multi locus sequence typing mlst pcr require dna sequencing simplifies analysis considerably allows high throughput furthermore resolution bovine strains aureus least good spa typing better mlst pulsed field gel electrophoresis pfge pcr data base includes presently total genotypes variants method highly associated virulence gene pattern contagiosity pathogenicity aureus strains involved bovine mastitis aureus genotype gtb contagious causes herds problems causing large costs switzerland european countries genotypes observed switzerland infect individual cows quarters genotyping pcr allows reliable prediction epidemiological pathogenic potential aureus involved bovine intramammary infection imi two key factors clinical veterinary medicine beneficial properties together moderate costs high sample throughput goal publication give detailed step step protocol easily establishing running pcr genotyping aureus laboratories
insect cytochrome monooxygenases cyps play important role detoxifying insecticides leading resistance insect populations polyphagous pest spodoptera litura developed resistance wide range insecticides present study novel gene cypb cloned litura function cypb assessed using rna interference rnai monitoring resistance levels three commonly used insecticides including chlorpyrifos beta cypermethrin methomyl full length complementary dna sequence cypb long open reading frame encoding amino acid residues quantitative reverse transcriptase polymerase chain reaction analyses larval pupal development indicated cypb expression highest midgut fifth instar larvae followed fat body cuticle expression cypb midgut regulated chlorpyrifos beta cypermethrin methomyl lethal concentration respectively dosages respectively addition piperonyl butoxide pbo significantly increased toxicity chlorpyrifos beta cypermethrin methomyl litura suggesting marked synergism three insecticides pbo mediated detoxification rnai mediated silencing cypb increased mortality fifth instar larvae exposed chlorpyrifos beta cypermethrin respectively dose levels results demonstrate cypb might play important role chlorpyrifos beta cypermethrin detoxification litura
background adrenaline auto injectors aai provided individuals considered high risk anaphylaxis evidence rate aai prescription increasing true extent previously quantified aim estimate trends annual issued prescriptions aai among children design setting retrospective cohort study using data primary care practices contributed health improvement network thin database method children young people aged years age prescription aais identified annual aai device prescription rates estimated using stata version results total million children identified providing million person years follow data overall children deemed high risk gps prescribed aai devices equates children confidence interval devices per person years increase number children prescribed devices increase total number aai devices prescribed per person years number devices issued per high risk child period also increased conclusion number children prescribed aai devices number devices prescribed primary care significantly increased discussion promote rational prescribing aais nhs needed
rna interference rnai powerful tool functional gene analysis successfully used regulate levels specific target genes study microrna based binary vector constructed used hprna expression hairpin rna expression cassettes carrying gene sequences typically constructed binary plasmid delivered plant cells agrobacteriurn mediated genetic transformation system allows simple insertion target gene sequences microrna backbone facilitate processing microrna hprna endogenous machinery host thereby producing artificial microrna carrying sequence target gene functionality new vector system tested silencing viral gene transgenic plants strong regulation viral gene observed virus infected tobacco plants transformed pamir vector processing amirna leading viral specific sirna confirmed northern blotting vector system provides important addition plant molecular biologists toolbox significantly facilitate use rnai technology analyses various gene functions plant cells
background presence gross deletions human immunodeficiency virus nef gene delta nef associated long term nonprogression infected patients investigated quickly genetic defects nef gene associated korean red ginseng krg intake long term slow progressors methods study divided three phases period baseline krg intake alone krg plus highly active antiretroviral therapy art nef gene amplicons obtained using reverse transcription polymerase chain reaction pcr nested pcr long term slow progressors nested pcr control patients art patients sequenced proportion delta nef premature stop codons frame insertion deletion nucleotide compared three phases control art patients results proportion defective nef genes significantly higher krg patients baseline control krg plus art phase art patients small frame deletions insertions significantly frequent among patients treated krg alone compared controls significantly fewer instances genetic defects detected samples taken krg plus art phase earliest defects detected delta nef small frame deletions krg intake respectively conclusion krg treatment might induce genetic defects nef gene report provides new insight importance genetic defects pathogenesis aids korean society ginseng published elsevier korea llc
thymic atrophy occurs infection associated apoptosis double positive premature exit double negative thymocytes observed first time significant bone marrow aplasia decrease common lymphoid progenitors clps preceded thymic alterations mice infected trypanosoma cruzi addition depletion stage previous indicating alteration differentiation thymocytes interestingly infected mice deficient expression showed higher numbers thymocytes wild type infected mice presenting similar percentages thymocytes moreover drop late differentiation stages thymocytes partially abrogated comparison wild type littermates thus results suggest thymic atrophy involves drop clps production bone marrow dependent independent mechanisms inhibits differentiation thymocytes
investigated expression pattern zinc finger protein gene rice oryza sativa various abiotic stresses gene contains open reading frame encoding zinc finger protein amino acids induced various stresses namely salinity drought cold phylogenetic analysis based deduced amino acid sequences oszfp cdna revealed significant sequence similarity zinc finger protein diverse families plant species southern blot analysis rice genomic dna suggested oszfp encoded multiple copy gene steady state levels oszfp transcripts found increase response salinity drought cold stresses rice zinc finger protein gene oszfp encoding cys type zinc finger transcription factor isolated rice using pcr expression profiling indicated oszfp constitutively expressed leaves roots northern blotting showed oszfp strongly induced high salinity drought slightly regulated low temperature degrees results suggested oszfp may play important role rice responses salinity drought cold transcription factor
lower bone mass accompanied higher bone fragility increased risk fracture observed individuals type diabetes mellitus low peptide levels associated low lumbar mineral density postmenopausal woman work investigated role peptide osteoblast cell biology vitro examined intracellular pathways found peptide activates erk human osteoblast like cells saos also observed proinsulin peptide prevents reduction type collagen expression decreases combination insulin receptor activator nuclear factor kappa rankl levels work show first time cpeptide activates specific intracellular pathway osteoblasts modulates expression protein involved bone remodeling results suggest peptide may role bone metabolism studies needing fully clarify role elsevier ireland ltd rights reserved
silicosis occupational lung disease caused exposure small particles crystalline silica ultimately results diffuse pulmonary fibrosis evidence indicates anti fibrotic role bone morphogenetic protein bmp bone marrow mesenchymal stem cells bmscs lung diseases therefore strategies incorporating genetic engineering stem cell biology might tremendous potential treat critical injuries diseases therefore modified bmscs overexpress bmp gene bmp bmscs lentivirus transduction evaluated whether fibrotic processes inhibited cells vivo wistar rats divided four groups control silica bmscs bmp bmscs control group received saline silica group received silica saline bmscs group received silica bmscs bmp bmscs group received silica bmp bmscs rats sacrificed days silica instillation hematoxylin eosin masson trichrome staining performed histological examination severity fibrosis evaluated levels hydroxyproline fibronectin transforming growth factor tgf beta restoration alveolar epithelium detected epithelial marker surfactant protein aquaporin aqp histopathological results showed bmp bmscs could remarkably block progression silica induced fibrosis hydroxyproline tgf beta contents bmp bmscs treated group significantly lower bmscs group furthermore expression aqp bmp bmscs treated group significantly higher bmscs group conclusion pulmonary fibrosis induced silica rats significantly reduced treatment bmp bmscs bmscs anti fibrotic effect bmscs strengthened bmp treatment bmp bmscs might potential therapeutic intervention silicosis elsevier inc rights reserved
dogfish ortholog aquaporin aqp amplified cdna using degenerate pcr followed cloning sequencing complete coding region obtained using race techniques alignment sequence aqp amino acid sequences species showed dogfish aqp high levels homology higher vertebrate sequences lower levels homology agnathan teleost fish sequences northern blotting indicated dogfish mrna approximately highly expressed rectal gland shark fluid secretory organ semi quantitative pcr indicates aqp ubiquitous expressed tissues measured low levels certain tissues level liver gill intestine manipulation external environmental salinity groups dogfish showed fish acclimated stages seawater change aqp mrna expression either rectal gland kidney esophagus cardiac stomach whereas quantitative pcr experiments using rna samples experiment showed significant lower abundance gill aqp mrna expression acclimated dogfish function dogfish aqp also determined measuring effect aqp expression xenopus laevis oocytes dogfish aqp expressing oocytes exhibited significantly increased osmotic water permeability compared controls invariant permeability significantly reduced treatment oocytes mercury chloride also case aqp species similarly aqp expressing oocytes exhibit enhanced urea glycerol permeability also consistent water selective property aqp species
new alkalophilic low molecular mass chitinase potent biocontrol agent bacillus subtilis partially purified enzymology chitinase studied enzyme showed optimal temperature degrees enzyme found stable min incubation degrees chitinase inhibited group specific agents like iaa dan tlck sds metal ions whereas show significant inhibitory effect chitinase pmsf partially inhibited enzyme substrates specificity tests indicated enzyme showed relative activity glycol chitin carboxymethylcellulose cmc chitin flakes laminarin compared colloidal chitin enzyme also hydrolyzed methylumbelliferyl acetyl glucosaminide indicating chitobiase activity chitinase study broad specificity could hydrolyze glycosidic bond glcnac glcnac also related carbohydrates glycosidic linkages partially purified chitinase showed antifungal activity rhizoctonia solani colletotrichum gloeosporioides two potent phytopathogens chilli also increased germination chilli seeds infected two potent phytopathogenic fungi
background anderson fabry disease linked defect glycosphingolipid metabolism progressive renal insufficiency major source morbidity additional complications result cardio cerebro vascular involvement survival reduced among affected males symptomatic female carriers update cochrane review first published previously updated objectives evaluate effectiveness safety enzyme replacement therapy compared interventions placebo interventions treating anderson fabry disease search methods searched cystic fibrosis genetic disorders group inborn errors metabolism trials register date recent search july also searched clinical trials cochrane library medline embase lilacs date recent search september selection criteria randomized controlled trials agalsidase alfa beta participants diagnosed anderson fabry disease data collection analysis two authors selected relevant trials assessed methodological quality extracted data main results nine trials comparing either agalsidase alfa beta participants fulfilled selection criteria trials comparing agalsidase alfa placebo reported globotriaosylceramide concentration plasma tissue aggregate results non significant one trial reported pain scores measured brief pain inventory severity statistically significant improvement participants receiving treatment three months mean difference confidence interval five months mean difference confidence interval six months mean difference confidence interval significant difference brief pain inventory pain related quality life five months six months mean difference confidence interval time points death outcome either trials one three trials comparing agalsidase beta placebo reported globotriaosylceramide concentration plasma tissue showed significant improvement kidney mean difference confidence interval heart mean difference confidence interval composite results renal cardiac cerebrovascular complications death mean difference confidence interval significant difference groups death trials reported pain two trials compared agalsidase alfa agalsidase beta one showed significant difference groups regarding adverse events risk ratio confidence interval serious adverse events risk ratio confidence interval two trials compared different dosing schedules agalsidase alfa one involved three different doses every two weeks weekly weekly trial evaluated two doses dosage schedules every week every week trials failed show significant differences various dosing schedules globotriaosylceramide levels significant differences found among schedules primary efficacy outcome self assessed health state pain scores one trial comparing agalsidase alfa agalsidase beta showed significant difference adverse events dyspnoea hypertension methodological quality included trials generally unclear random sequence generation allocation concealment authors conclusions trials comparing enzyme replacement therapy placebo show significant improvement enzyme replacement therapy regard microvascular endothelial deposits globotriaosylceramide pain related quality life however evidence identifying alfa beta form superior optimal dose frequency enzyme replacement therapy regards safety adverse events rigors fever significant agalsidase beta compared placebo long term influence enzyme replacement therapy risk morbidity mortality related anderson fabry disease remains established review highlights need continued research use enzyme replacement therapy anderson fabry disease
aim present study investigate regulatory relationships among hypoxia inducible factor hif microrna erythroid transcription factors cells transfected hif knockout overexpression lentivirus plasmid moi cells divided groups negative control overexpressing interference groups cells cultured normoxia hypoxia expression mir mir mir three groups determined quantitative pcr expression levels erythroid transcription factor mrnas gata gata nuclear factor erythroid measured using qpcr protein expression studied using western blot analysis normoxia hypoxia levels mir mir mir overexpression group higher groups differences statistically significant hypoxia level mir interference group less negative control group difference statistically significant level gata mrna overexpression group higher negative control group however interference group level lower overexpression group normoxic hypoxic conditions level gata mrna interference group higher two groups normoxic hypoxic conditions mrna reversely related gata levels hif gata mrnas negative control hypoxia higher normoxia level hif mrna overexpression group hypoxia lower normoxia gata gata mrna showed reverse association levels hif gata mrna interference group hypoxia higher compared normoxia differences statistically significant western blot results suggested gata gata protein expression correlated changes respective mrna transcription levels results therefore suggested gata mir involved regulation hematopoiesis via hif pathway cells hypoxic condition hsa mir hsa mir entirely dependent hif suggesting possible complex regulatory mechanisms involved hypoxia
background reported increased fraction exhaled nitric oxide feno measure driven airway inflammation blood eosinophil count marker systemic eosinophil inflammation correlated asthma attacks population based study objective investigate relation simultaneously elevated feno serum eosinophil cationic protein ecp levels asthma events among asthmatics methods measurements feno elevated ppb ecp elevated performed adult asthmatics asthma events attacks symptoms selfreported results simultaneously normal ecp feno levels found subjects subjects simultaneously elevated ecp feno population higher prevalence asthma attacks preceding months subjects normal ecp feno found subjects singly elevated ecp feno levels elevated ecp feno levels independently associated asthma attacks preceding months adjusting potential confounders conclusions simultaneously elevated feno ecp levels related higher likelihood asthma attacks preceding months indicates value measuring feno systemic eosinophilic inflammation patients asthma identify individuals high risk exacerbations clinical relevance feno ecp markers inflammation asthma dependent different inflammatory pathways weakly correlated simultaneous measurements offer better risk characterization adult asthmatics
hyaluronan glycosamminoglican involved cell biology well relevant polymer tissue engineering regenerative medicine megakaryocytes mks immersed mesh extracellular matrix ecm components regulate maturation bone marrow release platelets bloodstream fibrous ecms collagens fibronectin demonstrated differently regulate function platelet release role fills majority extracellular interstitial space investigated far demonstrated although human mks express receptors affected terms vitro differentiation maturation platelet formation importantly chemical properties exploited generate hydrogels entrapped ecms represent useful model closely mimic tridimensional characteristics environment studying function conclusion work demonstrated ideal candidate vivo model human ecm component environment elsevier inc rights reserved
johne disease caused infection mycobacterium avium subspecies paratuberculosis map chronic wasting disease ruminants hallmark symptoms clinical johne disease include diarrhea progressive weight loss premature death symptoms due largely chronic inflammation small intestine map colonizes resident macrophages within ileum small intestine subsequently establishing persistent infection host proposed regulatory cells may play role progression johne disease either promotion tolerance map via loss homeostasis subsequently allows widespread inflammation report evaluated presence tregs well immune parameters ileum draining lymph nodes map associated lesions lesion classification scheme developed categorize severity map induced lesions within infected tissues subsequently regulatory cell presence overall immune activity assessed corresponding lesions varying severity comparison tissues healthy control animals results revealed relationship animal health overall lesion severity within infected tissues well relationship bacterial burden severity pathology regulatory cell abundance shown decrease increasing lesion severity within ileum expression many treg associated genes increased mild lesions decreased severe lesions whereas lymph nodes expression genes tended increase increasing lesion severity based results conclude local loss cell including treg activity occurs within severe heal lesions associated map resulting loss homeostasis ultimately leads progression clinical johne disease elsevier rights reserved
euryhaline teleosts osmoregulation fundamental dynamic process essential maintenance ion water balance especially fish migrate fresh water sea water environments european eel proved excellent model species study molecular physiological adaptations associated osmoregulatory plasticity life cycle european eel includes two migratory periods second migration eels back sargasso sea reproduction various anatomical physiological changes allow successful transition aim study use microarray approach screen osmoregulatory tissues eel changes gene expression following acclimation tissues sampled fish selected intervals period following transfer rna isolated suppressive subtractive hybridization used enrichment differentially expressed genes microarrays comprising cdnas brain gill intestine kidney libraries hybridized appropriate targets analyzed differentially expressed clones unique sequences identified clones represented sequences known genes remaining sequences unknown results microarray analysis validated quantification differentially expressed genes northern blotting number differentially expressed genes already known involved osmoregulation functional roles many others normally associated ion water transport remain characterized
background although entomotoxicity plant ureases reported almost years ago insecticidal mechanism action still well understood jaburetox recombinant peptide derived one isoforms canavalia ensiformis jack bean urease presents biotechnological interest since toxic insects different orders previous studies group using chagas disease vector model insect rhodnius prolixus showed treatment jack bean urease jbu led hemocyte aggregation hemolymph darkening among effects work employed cell biology biochemical approaches investigate whether jaburetox would induce cellular also humoral immune responses species results findings indicated nanomolar doses jaburetox triggered cation dependent vitro aggregation hemocytes fifth instar nymphs adults use specific eicosanoid synthesis inhibitors revealed cellular immune response required cyclooxygenase products since indomethacin prevented jaburetox dependent aggregation whereas baicalein esculetin inhibitors lipoxygenases pathway cultured hemocytes incubated jaburetox showed cytoskeleton disorganization chromatin condensation positive activated caspase apoptosis marker although phagocytic activity remained unchanged finally vivo treatments injection jaburetox induced cellular response observed hemocyte aggregation humoral response seen increase spontaneous phenoloxidase activity key enzyme involved melanization defense hand humoral response elicited jaburetox injections lead increment antibacterial lysozyme activities jaburetox injections also impaired clearance pathogenic bacteria staphylococcus aureus hemolymph leading increased mortality indicating possible immunosuppression induced treatment peptide conclusions experimental conditions part toxic action jaburetox activates responses immune system prolixus vivo vitro although induction protect insects posterior bacterial infections taken together findings contribute general knowledge insect immunity shed light jaburetox mechanism action
background become evident increased nitric oxide generation may associated production reactive oxygen species peroxynitrite onoo peroxynitrite postulated responsible several cytotoxic effects previously ascribed since cellular arginine uptake shown modulate nitric oxide synthase activity intrigued study effect onoo arginine traffic renal mesangial cells methods arginine uptake cat cat mrna expression northern blotting analysis cat protein content using western blotting determined mesangial cells pre treated peroxynitrite results peroxynitrite induced significant increase arginine uptake cat mrna expression compared untreated cells contrast cat mrna expression protein abundance diminished conclusions rat mesangial cells peroxynitrite augments arginine uptake via augmentation cat decreasing cat expression
inorganic polyphosphate polyp found living organisms known polyp functions eukaryotes range osmoregulation virulence parasitic protozoa modulating blood coagulation inflammation bone mineralization cellular signalling mammals however mechanisms regulation even identity involved proteins many cases remain obscure insights obtained far stem studies yeast saccharomyces cerevisiae provide short overview properties functions known yeast polyp metabolism enzymes discuss future directions polyp research
antibiotics widely used mariculture industry study attempts determine extent water sediment pollution aritibiotic residues major mariculture sites china chemical molecular biology analysis results showed total concentrations sulfonamides tetracyclines range respectively water samples range dry weight dry weight respectively sediments samples occurrence antibiotic resistance genes args detected sites compared tetracyclines resistance genes absolute copy number relative abundance sulfonamides resistance genes times times higher water sediment mariculture sites dominant resistance genes sul abundance sul water phase significantly correlated concentrations sulfamerazine abundance sul sediment phase significantly sulfadiazine concentrations abundance tetm sediment phase significantly correlated concentrations oxytetracycline findings demonstrate persistence antibiotic residues args major mariculture sites southeast china elsevier rights reserved
mast cells innate immune cells respond rapidly infection barrier tissues skin intestinal mucosa expulsion parasitic worms gut involves robust type host response acute mastocytosis often generated site infection however role mast cells resistance worm infections appears parasite specific mast cells also involved tissue repair long term contribution mast cell activation worm expulsion definitively studied issue european journal immunology sorobetea eur immunol demonstrate activated mast cells persist large intestinal lamina propria intraepithelial compartment long worm expulsion resulting continued local systemic presence mast cell protease mast cell protease mcpt enhanced intestinal permeability commentary discuss findings wider context mast cell function health disease
article compare efficacy different pharmacological agents ranitidine omeprazole support phage transit stomach distal portions gastrointestinal tract rats show temporal modification environment animal stomach may protect twort like therapeutic antistaphylococcal phage bacteriophage collection hirszfeld institute immunology experimental therapy pas wroclaw poland inactivation gastric juice effectively enough enable significant fraction orally administered pass intestine interestingly found yogurt may relatively strong enhancing phage transit given immunomodulating activities phages data may suggest phages yogurt act synergistically mediating probiotic activities enhancing effectiveness oral phage therapy also demonstrate orally applied phages similar size morphology sensitivity acidic environment may differ translocation bloodstream evident mice therapeutic staphylococcal phage reached blood upon oral administration combined antacid agent whilst phage detected even applied times higher dose findings also suggest phage penetration digestive tract blood may species specific
clustered regularly interspaced palindromic repeats crispr crispr associated protein cas pathway revolutionizing biological research modifications primitive prokaryotic immune system enable scientists efficiently edit dna modulate gene expression living eukaryotic cells organisms thus many laboratories perform important experiments previously considered scientifically risky costly describe components crispr cas system engineered use eukaryotes also explain system used genetically modify cell lines model organisms regulate gene expression order search new participants biological pathways american society bone mineral research
since development antibody production techniques number immunoglobulins developed large scale using conventional methods hybridoma technology opened new horizon production antibodies target antigens infectious pathogens malignant diseases including autoimmune disorders numerous potent toxins however clinical humanized chimeric murine antibodies several limitations complexities therefore overcome difficulties recent advances genetic engineering techniques phage display technique allowed production highly specific recombinant antibodies engineered antibodies constructed hunt novel therapeutic drugs equipped enhanced immunoprotective abilities engaging immune effector functions effective development fusion proteins efficient tumor tissue penetration high affinity antibodies directed conserved targets advanced antibody engineering techniques extensive applications fields immunology biotechnology diagnostics therapeutic medicines however limited knowledge regarding dynamic antibody development approaches therefore review extends beyond understanding conventional polyclonal monoclonal antibodies furthermore recent advances antibody engineering techniques together antibody fragments display technologies immunomodulation broad applications antibodies discussed enhance innovative antibody production pursuit healthier future humans
aim review literature oral health status population evidence based understanding epigenetic mechanisms significant role diseases occurring oral cavity background epigenetics study heritable changes gene expression involve changes underlying dna sequence words change phenotype without change genotype turn affects way cells read genes epigenetic change regular natural occurrence also influenced several factors including age environment lifestyle disease state field epigenetics quickly growing believed environment lifestyle interact genome influence epigenetic change changes may reflected various stages throughout person life even later generations conclusion epigenetic codes help understand biological phenotype arises interaction human genome environment health disease epigenetics major turn away molecular biology current epigenetics offers new insights gene regulation heredity also challenges way think evolution genetics development interestingly suggests testable mechanisms whereby environmental factors ranging stress infection influence genetic expression
metabolism abt investigated vitro hepatic systems rat monkey receiving abt vivo plasma rat dog monkey human vitro hepatic systems abt primarily cleared via oxidative metabolism proceeded via two parallel pathways pathway abt oxidized nitrogen quinuclidine moiety form pathway oxidation occurred indole containing moiety form metabolism via oxidation predominant dog rat monkey human metabolism proceeded primarily via oxidation indole containing moiety abt extensively metabolized vivo rat monkey primarily found rat urine bile whereas major metabolite monkey urine feces predominant circulating metabolite dog rat primary circulating metabolite monkey human enzymatic studies suggested formation primarily mediated renal fmo cypa primary enzymes catalyzing formation biotransformation abt human monkey markedly different dog rat suggesting monkey appropriate model predicting human biotransformation toxicology abt
genus potexvirus one eight genera belonging family alphaflexiviridae according virus taxonomy released international committee taxonomy viruses www ictvonline org index asp currently genus contains known species including many agricultural important viruses potato virus pvx members genus characterized flexuous filamentous virions diameter length potexvirus monopartite positive strand rna genome encoding five open reading frames orfs cap structure end poly tail end besides pvx bamboo mosaic virus bamv another potexvirus received intensive attention due wealth knowledge molecular biology virus review discuss enzymatic activities associated functional domains bamv replication protein kda polypeptide encoded orf unique cap formation mechanism may conserved across alphavirus superfamily particularly addressed recently identified interactions replication protein plant host factors also described
total environment includes closely linking circles biosphere lithosphere active core global population increases urbanization process accelerates arable land gradually decreasing global climate change pressure various types environmental pollution case especially china land important resources human beings survival increase manage arable land key sustainable agriculture development china extensive marshy land reclamated better potential land resources pre condition protecting environment good way enlarging globally managing arable land related studies conducted china past years many results obvious practical efficiency obtained summarizing results salt soil main target related contents nutrient transport use types biodiversity interactions plants molecular biology ecology covered interactions among biosphere lithosphere atmosphere anthroposphere focused elsevier rights reserved
background dysfunction glutamatergic system implicated alcohol addiction however molecular underpinnings phenomenon still poorly understood current study investigated possible function matrix metalloproteinase mmp alcohol addiction protein recently emerged important regulator excitatory synaptic plasticity methods long term studies alcohol drinking mice used intellicages dendritic spines analyzed using diolistic staining dii whole cell patch clamp used assess silent synapses motivation alcohol human subjects assessed basis semi structured assessment genetics alcoholism interview results mice devoid mmp mmp knockout drank much alcohol wild type animals however impaired alcohol seeking motivation test withdrawal deficit could rescued overexpression exogenous mmp central nucleus amygdala cea furthermore impaired alcohol seeking associated structural alterations dendritic spines cea moreover whole cell patch clamp analysis basal amygdala cea projections showed alcohol consumption withdrawal associated generation silent synapses plastic changes impaired mmp knockout mice finally polymorphism mmp gene position upregulates mmp expression correlated increased motivation alcohol alcoholics conclusions aggregate results indicate novel mechanism alcohol craving involves mmp dependent synaptic plasticity cea
primary immunodeficiency pid diseases comprise heterogeneous group inherited disorders immune function technical advancements whole genome whole exome rna sequencing seen explosion genetic discoveries field pids present review aims focus group immunodeficiency disorders associated elevated levels igm hyper igm higm provides clinical differential diagnosis patients present evaluation immunodeficiency due recurrent infections laboratory studies show either clear isolated elevation serum immunoglobulin igm low absent igg iga ige alternatively igm levels may normal moderately elevated serum immunoglobulins reported norms age absent mechanistically disorders recognized defects immunoglobulin class switch recombination csr importantly safeguard genetic stability csr utilizes elements dna repair machinery including multi protein complexes involved mismatch repair mmr therefore uncommon defects dna repair machinery present laboratory findings higm review discuss clinical phenotypes associated congenital defects associated higm clinical manifestations relevant immunologic testing inheritance pattern molecular diagnosis presumed pathogenesis omim number annotated compiled accepted therapeutic options available reviewed condition discussed american academy allergy asthma immunology
illustrate mechanism lycopene accumulation red fleshed cara cara navel orange citrus sinensis beck genes encoding citrus lycopene beta cyclases clcybs compared among citrus accessions protein sequence alignment showed clcybs could classified two types clcybs clcybs based polymorphisms amino acids polymerase chain reaction restriction fragment length polymorphisms analysis pcr rflp indicated studied eighteen accessions citrus relatives including four lycopene accumulatedflesh could classified three groups pummelo citrus grandis two grapefruits paradisi trifoliata orange pocirus trifoliata two citranges sinensis trifoliata kumquat fortunella crassifolia group homozygous clcybs genomes group heterozygous clcybs clcybs however group includes two navel oranges two sour oranges aurantium close amounts cslcybs cslcybs amplified whereas group includes two lemons limon two mandarins reticulata calamondin unequal unstable levels two variants amplified southern blot analysis implied clcybs least two copies cara cara navel orange three tested genotypes data presented indicated irrelevancy two variants genomes accumulation lycopene citrus fruits biotechnol biotechnol
explored social shaping science microlevel reality face face interaction one traditional places scientific activities scientific lab specifically examined doctoral students perception interaction doctoral mentors mmi lab social environment lse influenced productivity construed production peer reviewed articles measured productivity using total number articles total number articles impact factor greater equal ifge number first authored articles nfa via face face interviews obtained data molecular biology students selected universities japan singapore taiwan additional productivity data nfa obtained online bibliometric databases summarize original mmi lse semantic differential items used measure students perceptions principal component analyses performed results smaller sets mmi pcs lse pcs identify pcs influenced publication counts performed poisson regression analyses although perceived mmi linked productivity perceived lse linked students perceived lse intellectually stimulating reported high levels productivity total ifge nfa findings highlight students perception training environment factors production scientific output findings also carry important implications improving mentoring programs science international union biochemistry molecular biology
genetic factors great role pathogenesis autoimmune diseases cooperating environmental stimuli killer immunoglobulin like receptors kirs cell surface proteins cells whose association major histocompatibility complex regulates killing function aim study provide information possible association kir human leukocyte antigen hla genes systemic sclerosis disease iranian population total systemic sclerosis patients healthy controls enrolled case control study order determine presence absence kir genes specific hla class ligands dna analyzed polymerase chain reaction using specific sequence primer method pcr ssp among discovered kir genotypes genotypes showed considerable role genotypes could preclude risk systemic sclerosis ssc disease gene gene interactions also analyzed significant confounding effects seen involved genes two combinations kirdl hla thr kirdl hla none single kir genes showed significant effect risk ssc conclude important relationship kir genes hla ligands incidence rate systemic sclerosis iranian population powerful role number discovered kir hla compounds activating kir genotype hla confirmed provocative hypothesis interplay activating inhibitory kir genes hla ligands critical index systemic sclerosis predisposition
optical sensors powerful tools live cell research permit follow location concentration changes activities key cellular players lipids ions enzymes current sensor probes based fluorescence provides great spatial temporal precision provided high end microscopy used timescale event interest fits response time sensor many sensors developed past years genetically encoded diversity designs leading simple sometimes complicated applications use live cells genetically encoded sensors began emerge discovery fluorescent proteins engineering improved optical properties manipulation structure application circular permutation review describe variety genetically encoded biosensor concepts including intensiometric ratiometric sensors based single fluorescent proteins forster resonance energy transfer based sensors sensors utilising bioluminescence sensors using self labelling snap clip tags finally tetracysteine based sensors focus newer developments discuss current approaches techniques design application demonstrate power using optical sensors cell biology help opening field systematic applications future
purpose identify causative mutations characterize phenotype associated genotype unrelated families autosomal recessive retinal degeneration ophthalmic evaluation dna isolation carried pedigrees inherited retinal degenerations ird exomes probands eight pedigrees captured using nimblegen agilent utr kits sequencing performed illumina hiseq dhdds gene screened mutations remaining two pedigrees ashkenazi jewish ancestry exome variants filtered detect candidate causal variants using exomesuite software segregation ethnicity matched control sample analysis performed dideoxy sequencing retinal histology patient dhdds mutation studied microscopy genetic analysis identified six known mutations abca glyglu alaval rpe tyrcys glyasp pdeb lyster dhdds lysglu ten novel potentially pathogenic variants cerkl metval fsx rpe pheser thrleu fsx arl arghis usha glyter cystrp pdeb glnter dhdds thrala genes among variants mutations two separate genes observed segregate ird two pedigrees retinal histopathology patient dhdds mutation showed severe degeneration retinal layers relative preservation retinal pigment epithelium analysis exome variants ten pedigrees revealed nine novel potential disease causing variants nine previously reported homozygous compound heterozygous mutations cerkl abca rpe arl usha pdeb dhdds genes mutations could sufficient cause pathology observed one gene one pedigree
halophiles excellent sources enzymes salt stable also withstand carry reactions efficiently extreme conditions aim study isolate study diversity among halophilic bacteria producing enzymes industrial value screening halophiles various saline habitats india led isolation halophilic bacteria producing industrially important hydrolases amylases lipases proteases characterization potential isolates morphological biochemical rrna gene analysis found related marinobacter virgibacillus halobacillus geomicrobium chromohalobacter oceanobacillus bacillus halomonas staphylococcus genera belonged moderately halophilic group bacteria exhibiting salt requirement range significant diversity among halophiles saline habitats india preliminary characterization crude hydrolases established active stable one extreme condition high salt temperature presence organic solvents concluded halophilic isolates diverse phylogeny also enzyme characteristics enzymes may potentially useful catalysis harsh operational conditions encountered industrial processes solvent stability among halophilic enzymes seems generic novel feature making potentially useful non aqueous enzymology
paper review literature data interaction erythrocytic acetylcholinesterase mammalian blood serum butyrylcholinesterase group isomeric complex ester derivatives acetates propionates butyrates valerates isobutyrates bases iodomethylates ephedrine enantiomer pseudoephedrine alkaloid monoesters parameters enzymatic hydrolysis determined certain specificity toward acetylcholinesterase revealed whereas diesters iodomethylates pseudoephedrine submitted hydrolysis butyrylcholinesterase turned alkaloid diesters trimethylammonium derivatives uncompetitive reversible inhibitors acetylcholinesterase competitive inhibitors butyrylcholinesterase performed first time isomer enantiomer analysis structure efficiency shown caes possible state greater complementarity catalytical surface enzymes ligands pseudoephedrine structure differentiation often manifested
soybean soy foods rich sources isoflavones much attention focused isoflavonoids beneficial effects human health isoflavones belong group phytoestrogens phytoestrogens estrogenic compounds found plants intestinal flora plays important role absorption metabolism isoflavones dietary components chemical composition isoflavones also known affect absorption isoflavones human metabolism excretion isoflavones following consumption soy products show considerable variation bioavailability soybean isoflavones women dependent gut microflora equol metabolite daidzein produced intestinal flora equol many biological activities related human health production might affected compositions diets intestinal flora achieve higher production equol daidzein gut control metabolic activity intestinal flora might importance
chromatin immunoprecipitation chip provides means enriching dna associated transcription factors histone modifications indeed proteins suitably characterized antibodies available years sequence detection progressed quantitative real time pcr southern blotting microarrays chip chip high throughput sequencing chip seq progression vastly increased sequence coverage data volumes generated turn enabled informaticians predict identity multi protein complexes dna based overrepresentation sequence motifs dna enriched chip single antibody single protein course development high throughput sequencing little changed chip methodology recently last three years number modifications made chip protocol goal enhancing sensitivity method reducing levels nonspecific background sequences chipped samples chapter provide brief commentary methodological changes describe detailed chip exo method able generate narrower peaks greater peak coverage chipped material
bacterial resistance becomes increasingly common new hybrid peptide cecropina magainin kwalskegpgkflgkkkkf developed kill broad spectrum bacteria without damaging human cells mechanism antibacterial toxicity hybrid peptides unknown herein investigate localization hybrid peptide methicillin resistant staphylococcus aureus mrsa minimum inhibitory concentration hybrid peptides could enhance hydrophobicity mrsa dye leakage experiments showed hybrid peptides caused dye leakage liposomes hybrid peptides influenced permeability outer membrane plasma membrane mrsa cecropina magainin treatment mrsa membrane ultrastructure damaged concentration increased ultimately peptide destroyed integrity bacterial cell membrane allowing dye propidium iodide enter cytoplasm therefore hybrid antibacterial peptide kill mrsa international union biochemistry molecular biology inc volume number pages
abilities tumor cells invade metastasize frequent causes death cancer patients studying mechanisms cell motility alterations acquisition enhanced metastatic potential result transformation important aspect current cell biology initial determinant step cell motility formation active cell edge protrusions based arp dependent actin polymerization used three different cell systems examples different models tumor transformation study alteration redistribution protrusive activity caused transformation fibroblasts analyzed relationships detected alterations acquisition increased invasive potential cells active edge untransformed fibroblasts occupies cell perimeter concentrated cell front well pronounced stable regions lateral cell edges tumor transformation causes redistribution protrusive activity fibroblasts irrespective origin nature transforming agents length active edges significantly increases total perimeter fibrosarcoma cells tumor origin cells practically stable edges intensity protrusive activity transformed cells also increased single transformed cells show decrease directionality rate migration substrate without special stimulation instead gain capacity migrate invade matrigel abilities increase parallel intensification edge activity showed invasive abilities associated activation matrix metalloproteinases studied cell systems data demonstrate increase length active edge could considered additional feature cell transformation together reduction stress fiber focal adhesions excessive protrusive activity results development explorative migration tumor cells
addition two electrons two protons bond protochlorophyllide catalyzed light dependent enzyme relying nadph electron donor light independent enzyme bearing cys asp ligated cluster reduced cytoplasmic electron donors atp dependent manner functions electron donor protochlorophyllide precise sequence events occurring bond however determined experimentally dark operating enzyme paper present computational investigation reaction mechanism enzyme blyp blyp level theory reaction mechanism begins single electron reduction substrate cys asp ligated yielding negatively charged intermediate depending rate cluster reduction reaction either proceeds double protonation single electron reduced substrate alternating proton electron transfer computed reaction barriers suggest cluster reduction rate limiting stage process poisson boltzmann computations full enzyme substrate complex followed monte carlo simulations redox protonation titrations revealed hitherto unsuspected dependence reaction potential cluster furthermore computed distributions protonation states asp glu residues used conjuntion single point oniom computations obtain first time influence protonation states enzyme reaction catalyzes despite exaggerating ease reduction substrate computations confirmed broad features reaction mechanism obtained medium sized models afforded valuable insights influence titratable amino acids reaction step additional comparisons energetic features reaction intermediates common biochemical redox intermediates suggest surprisingly simple explanation mechanistic differences dark catalyzed light dependent enzyme reaction mechanisms
iso nonylphthalate dinp complex mixture predominantly nine carbon branched chain dialkyl phthalate isomers replaced ethylhexyl phthalate dehp major plasticiser polyvinylchloride pvc polymers similar dehp dinp developmental reproductive toxicant rodents study first time describes human metabolism elimination dinp male volunteer applied single oral dinp dose body weight avoid interference omnipresent background exposure used deuterium labelled dinp investigated urinary excretion simple monoester mono iso nonylphthalate minp oxidised isomers hydroxy minp oxo oxo minp carboxy carboxy minp functional groups used isomeric minp three specific oxidised isomer standards quantification mono methyl hydroxy octyl phthalate mmeop mono methyl oxo octyl phtalate oxo mmeop rnono methyl carboxyheptyl phthalate carboxy mmehp specific dinp metabolites currently synthetic dinp metabolite standards available within recovered applied dose urine dinp metabolites minp carboxy minp oxo minp minp oxidised dinp metabolites determined study probably increase share dinp dose excreted via urine elimination followed multi phase pattern elimiation half lives second phase beginning post dose roughly estimated oxo mnp metabolites carboxy minp metabolites carboxy minp metabolites replaced minp metabolites major urinary metabolites oxidised dinp metabolites suitable parameters biomonitoring human dinp exposure elsevier gmbh rights reserved
understanding howhost dynamics including variations population size dispersal may affect epidemiology infectious diseases ecological evolutionary processes active research area focus bank vole myodes glareolus metapopulation surveyed finland bank vole reservoir puumala hantavirus puuv agent nephropathia epidemica mild form hemorrhagic fever renal symptom humans glareolus populations experience multiannual density fluctuations may influence level genetic diversity maintained bank voles puuv prevalence occurrence examine bank vole metapopulation genetics presumably neutral markers immunerelated genes involved susceptibility puuv tnf promoter tlr tlr gene investigate links population dynamics microevolutionary processes puuv epidemiology show genetic drift slightly transiently affects neutral adaptive genetic variability within metapopulation gene flow seems counterbalance effects multiannual density fluctuations low abundance phase may therefore short impact genetic variation host consequently viral genetic diversity environmental heterogeneity seem affect vole gene flow might explain absence spatial structure previously detected puuv area besides results suggest role vole dispersal puuv circulation sex specific density dependent movements find little evidence selection acting immune related genes within metapopulation footprint positive selection detected tlr gene observe marginally significant associations genotype puuv genogroups results show neutral processes seem main factors affecting evolution immune related genes contemporary scale although relative effects neutral adaptive forces could vary temporally density fluctuations immune related gene polymorphism may turn partly influence puuv epidemiology metapopulation published elsevier
background indoor air pollution caused fungal contamination suspected public health impact monitoring composition indoor airborne fungal contaminants therefore important avoid problems linked culture dependent protocols molecular methods increasingly proposed alternative among molecular methods polymerase chain reaction pcr real time pcr frequently used tools indoor fungal detection however even tools demonstrated appropriate performance able discriminate species genetically close solution could use post qpcr high resolution melting hrm analysis would allow discrimination species based highly accurate determination difference melting temperature obtained amplicon study provide proof concept approach using dye adapted version previously developed qpcr sybr green method detect aspergillus versicolor indoor air important airborne fungus terms occurrence cause health problems despite good performance observed qpcr method discrimination could previously made versicolor aspergillus creber aspergillus sydowii methods study developed evaluated hrm assay discrimination versicolor aspergillus creber aspergillus sydowii results using hrm analysis discrimination aspergillus species could made false positive false negatives observed performance assessment including strains aspergillus limit detection determined species gdna creber sydowii gdna versicolor hrm analysis also successfully tested environmental samples conclusion reported development hrm tools discrimination versicolor creber sydowii however study could considered study case demonstrating hrm based existing qpcr assays allows accurate identification indoor air contaminants contributes improved insight diversity indoor airborne fungi hence eventually causal link health problems
aim study aimed evaluate benefits arnica montana post operative blood loss seroma production women undergoing unilateral total mastectomy administering arnica montana korsakovian dilution materials methods women randomly assigned montana placebo followed days main end point reduction blood serum volumes collected drainages secondary end points duration drainage self evaluation pain presence bruising hematomas results per protocol analysis revealed lower mean volume blood serum collected drainages montana confidence interval regression model including treatment volume collected drainage day surgery patient weight showed statistically significant difference favor montana volumes collected day surgery following days significantly lower montana days secondary end points revealed significant differences conclusions montana could reduce post operative blood seroma collection women undergoing unilateral total mastectomy larger studies needed different dilutions montana validate data
functional analysis insect genes well production recombinant proteins biomedical use clonal transgenic silkworms useful examined could produced parthenogenetic strain maintained years female line embryogenesis induced nearly efficiency heat shock treatment unfertilized eggs individuals identical female genotype silkworm transgenesis requires injection dna constructs non diapausing eggs preblastodermal stage embryogenesis since parthenogenetic silkworms produce diapausing eggs diapause programing eliminated incubating ovaries parthenogenetic strain standard male larvae chorionated eggs dissected implants activated heat shock treatment injected transgene construct several transgenic individuals occurred daughter generation southern blotting analysis two randomly chosen transgenic lines vtg vtg revealed multiple transgene insertions insertions found parental females transferred next generation without changes sites copy numbers suggesting transgenic silkworms maintained clonal strains homozygous transgenes cryopreservation developed storage precious genotypes shown vtg vtg lines larval ovaries stored dmso temperature liquid nitrogen transferred grace medium defrosting implanted larvae either sex standard silkworm strains pnd chorionated eggs developed implants dissected activated heat shock obtain females nearly efficiency cold shock induce development sexes eggs possible establish bisexual lines homozygous transgene elsevier ltd rights reserved
international meeting enzymology molecular biology carbonyl metabolism castle ploen schleswig holstein germany july covered aspects nad dependent oxido reductases involved general metabolism xenobiotic physiological carbonyl compounds starting years ago enzyme purification structure elucidation enzyme kinetics carbonyl society members meanwhile established internationally recognized enzyme nomenclature systems consider aspects enzyme genomics enzyme evolution along roles diseases international meeting included lectures international speakers world
objective skeletal dysplasia bowing long bones rare group multiple characterized congenital anomalies materials methods introduce simple practical diagnostic flowchart may helpful identifying appropriate pathway obstetrical management results herein describe four fetal cases bent bony dysplasia focus ultrasound findings phenotype molecular tests distinctive ray features chondral growth plate histology first case typical campomelic dysplasia resulting novo mutation sox gene second fetus affected osteogenesis imperfecta type carrying mutation cola gene third case rare presentation campomelic dysplasia cumming type sox examination normal subsequently femoral hypoplasia unusual fades syndrome also discussed conclusion targeted molecular tests genetic counseling required supplementing ultrasound imaging order diagnose correct skeletal disorders copyright taiwan association obstetrics gynecology published elsevier taiwan llc
fdu fub two novel synthetic cannabinoids detected herbal blends japan russia germany quickly added scheduled drugs list unfortunately human metabolism data currently available making challenging confirm intake present study aims identify appropriate analytical markers investigating fdu fub metabolism human hepatocytes confirm results authentic urine specimens metabolic stability fdu fub incubated human liver microsomes metabolite profiling incubated human hepatocytes two authentic urine specimens fdu fub positive cases analyzed beta glucuronidase hydrolysis metabolite identification hepatocyte samples urine specimens accomplished high resolution mass spectrometry using information dependent acquisition fdu fub rapidly metabolized hlm half lives min respectively human hepatocyte samples identified seven metabolites compounds generated ester hydrolysis hydroxylation glucuronidation ester hydrolysis fdu fub yielded samemetabolite fluorobenzylindole carboxylic acid fbi cooh hydroxylated fbi cooh major metabolites authentic urine specimens beta glucuronidase hydrolysis also predominant metabolites based study recommend hydroxylated fbi cooh fbi cooh suitable urinary markers documenting fdu fub intake
late life depression lld thought multifactorial etiology including significant genetic component number candidate gene studies carried results remain inconclusive undertook systematic review genetic association studies depression depressive symptoms late life published february performed meta analyses polymorphisms investigated three independent studies total candidate gene studies examining polymorphisms genes well genome wide association study gwas included meta analyses conducted four polymorphisms using random effects models three apoe bdnf slca associated lld genes implicated hippocampal plasticity stress reactivity suggesting dysregulation pathways may contribute lld despite using large sample gwas published date identified one genome wide significant locus region future larger genetic studies specifically examining lld including non hypothesis driven gwas required identify genetic determinants lld elsevier ltd rights reserved
methoxyphenyl hydroxylamine component human metabolism two industrial environmental pollutants bladder carcinogens viz methoxyaniline anisidine methoxynitrobenzene nitroanisole responsible genotoxicity besides capability form three deoxyguanosine adducts dna methoxyphenyl hydroxylamine also metabolized hepatic microsomal enzymes investigate metabolism human hepatic microsomes identify major microsomal enzymes involved process aims study methoxyphenyl hydroxylamine metabolized human hepatic microsomes predominantly anisidine one parent carcinogens methoxyphenyl hydroxylamine formed aminophenol two methoxyphenyl hydroxylamine metabolites whose exact structures identified yet minor products selective inhibitors microsomal cyps nadph cyp reductase nadh cytochrome reductase used characterize human liver microsomal enzymes reducing methoxyphenyl hydroxylamine anisidine based studies attribute main activity metabolic step human liver cypa enzymes cypd also partake methoxyphenyl hydroxylamine metabolism human liver similar among human recombinant cyp enzymes tested study human cype followed cypa efficient enzymes metabolizing methoxyphenyl hydroxylamine anisidine results found study indicate genotoxicity methoxyphenyl hydroxylamine dictated spontaneous decomposition nitrenium carbenium ions generating dna adducts susceptibility metabolism cyp enzymes elsevier rights reserved
proopiomelanocortin pomc melanocortin receptor mcr regulators melanogenesis pigmentation objective estimate levels searching possible role melanocortin system vitiligo study included vitiligo patients controls skin biopsies taken lesional non lesional skin patients non sun exposed skin controls detect expression pomc mcr using quantitative real time polymerase chain reaction factors significantly lower lesional non lesional skin controls significantly higher non lesional skin controls statistically significant positive correlation lesional levels pomc mcr well non lesional levels pomc mcr patients hand found statistically significant negative correlation lesional non lesional levels pomc well lesional non lesional levels mcr patients conclusion melanocortin system could play role pathogenesis vitiligo could affected end result disease
background patients aspirin exacerbated respiratory disease aerd eosinophilia report angina type chest pain occurs rest responds corticosteroid therapy frequency eosinophilia associated coronary artery vasospasm patients aerd disease characterized blood respiratory tissue eosinophilia however unknown objective objective study understand cause chest pain described determine appropriate treatment methods chart review patients aerd followed brigham women hospital performed patients reported type chest pain assessed presence cardiac risk factors eosinophilia response chest pain variety treatments two patients aerd eosinophilia recurrent chest pain due suspected vasospasm described detail cases also summarized results patients reviewed history chest pain concerning ischemia patients chest pain undergone aspirin desensitization initiated high dose aspirin therapy reported increase frequency severity chest pain high dose aspirin improvement aspirin discontinuation dose reduction many patients traditional cardiac risk factors none evidence coronary atherosclerosis almost significant eosinophilia chest pain improve typical antianginal treatments respond corticosteroid therapy conclusions although uncommon patients aerd develop eosinophilia associated coronary artery vasospasm occasionally worsened high dose aspirin patients aerd present symptoms ischemic chest pain screened eosinophilia early treatment corticosteroids life saving american academy allergy asthma immunology
background oxytetracycline otc largely employed zootechnical veterinary practices ensure wellness farmed animals partially absorbed within gastrointestinal tract depositing several tissues therefore potential otc toxicity relevant considering putative risk derived entry accumulation drug human pet food chain supply despite scientific literature highlights several otc dependent toxic effects human animal health molecular mechanisms toxicity still poorly understood methods evaluated dna damages epigenetic alterations quantitative reverse transcription polymerase chain reaction quantitative polymerase chain reaction chromatin immuno precipitation western blot analysis results observed human peripheral blood mononuclear cells pbmcs expressed dna damage features activation atm phosphorylation hax modifications histone rnethylation lysine chromatin vitro exposure otc changes linked robust inflammatory response indicated increased expression interferon ifn gamma type superoxide dismutase sod discussion data reveal unexpected biological vitro activity otc able modify dna chromatin cultured human pimc regard otc presence foods animal origin could represent potential risk human animal health
oxidative stress suggested central ageing process endogenous antioxidant defence repair mechanisms place minimize damage theoretically supplementation exogenous antioxidants might support endogenous antioxidant system thereby reducing oxidative damage ageing related functional decline prolonging life health span yet supplementation trials antioxidants animal models minimal success human epidemiological data similarly unimpressive leading question whether vitamin example might pro oxidant properties vivo supplemented cold exposed degrees female cbl mice lifespan vitamin ascorbyl polyphosphate widely advocated self administered reduce oxidative stress retard ageing increase healthy lifespan effect mean maximum lifespan following vitamin treatment significant impact body mass parameters energy metabolism observed moreover differences hepatocyte lymphocyte dna oxidative damage hepatic lipid peroxidation seen supplemented control mice using dna macroarray specific oxidative stress related genes found months supplementation mice exhibited significantly reduced expression several genes liver linked free radical scavenging including superoxide dismutase confirmed effects northern blotting found additional regulation glutathione peroxidase present macroarray vitamin treated group suggest high dietary doses vitamin ineffective prolonging lifespan mice positive benefits derived antioxidant offset compensatory reductions endogenous protection mechanisms leading net reduction accumulated oxidative damage elsevier ireland ltd rights reserved
power local borders resist prevent transnational mobilities education received little attention comparative education article explore motif border immunology reference new history mobile paradigm history teaching greek cypriot turkish cypriot history textbooks types local borders impermeable new history overall argument explore ethnonational forms collective identities imagined constitutive textbook borders account immunity mobility change
glutathione transferases gsts ubiquitous enzymes animals plants multifunctional proteins encoded large gene family gsts involved response oxidative stress including drought salt heavy metals oxidative stress excessive reactive oxygen species ros induce increase gst levels gsts metabolize toxic products lipid peroxidation damaged dna molecules previously full length cdna novel zeta gst gene ppgst characterized fruit pyrus pyrifolia nakai huobali present study constitutive plant expression vector ppgst constructed transferred tobacco nicotiana tabacum xanthi verify function ppgst result ppgst gene successfully integrated genome transgenic tobacco lines expressed expected transformants southern blotting quantitative reverse transcription polymerase chain reaction qrt pcr analysis growth generation plants ppgst transgenic lines non stressful conditions similar however transgenic tobacco lines showed relatively normal growth drought nacl cadmium stresses furthermore transgenic tobacco lines showed significantly slower superoxide anion production rate abiotic stress simultaneously mda content transgenic tobacco plant slightly increased significantly lower drought salt stress together gst activity transgenic tobacco lines significantly increased stressful conditions compared overexpression ppgst tobacco enhanced tolerance transgenic tobacco lines oxidative damage caused drought nacl stresses
background early postnatal period critical immunity feeding docosahexaenoic acid dha demonstrated affect immune development objective objective study determine importance feeding dha suckling weaning immune function oral tolerance methods sprague dawley rats randomly assigned nutritionally adequate diets throughout lactation control dha diet dha dha diet suckled pups dam randomly assigned mucosal challenge placebo ovalbumin week pups systemically received ovalbumin adjuvant induce systemic immunization pups dam randomly assigned diets factorial design immune function assessed results feeding dams dha lactation resulted higher splenocyte production interleukin stimulated concanavalin lipopolysaccharide lps ovalbumin higher production interferon ifn gamma lps feeding control diet pups comparison pups fed control diet feeding dha weaning resulted lower type helper beta type helper response splenocytes lps stimulation lower plasma concentration ovalbumin specific immunoglobulin pups receive additional dha study higher plasma concentration ovalbumin specific ige pups received dha suckling weaning conclusions feeding additional dha suckling beneficial programming effect ability immune cells produce ifn gamma feeding dha weaning resulted lower inflammatory response providing dietary dha either critical periods immune development prevented establishment female rat offspring
equine herpesvirus type ehv double stranded dna virus occurring breeds horses belongs varicellovirus genus herpesviridae family alphaherpesvirinae subfamily ehv may cause epidemic respiratory disorders abortions pregnant mares neonatal foal death chorioretinopathy also neurological disease termed equine herpesvirus myeloencephalopathy ehm infection spreads inhalation aerosolised infectious virus close contact aborted fetuses fetal membranes fomites lifelong latency demonstrated especially trigeminal ganglion lymphatic tissues draining respiratory tract peripheral blood leukocytes virus periodically reactivated traditional serologic virus isolation tests available long time however assays disadvantages interfering fast reliable detection ehv advances molecular biology use quantitative pcr system allow sensitive detection single genome copy range higher analytical specificity calculation ehv viral loads
principles domain deleted human coagulation factor viii cdna bdd hfviiicdna transgenic mice produced using sperm mediated gene transfer smgt transcription expression human fviii transgenic mice also investigated methods sperm isolated caudae epididymides male cbl mice transfected linearized rsv bdd bfviiicdna plasmid subsequently used fertilize female mice via artificial insemination vivo birth progeny identified pcr southern blotting bdd hfviiicdna transgenic mice progeny subsequently derived male transgenic mouse normal cbl female mouse progeny identified bdd hfviiicdna transgenic mice southern blotting transcription expression bddhfviiicdna transgenic mice determined northern blotting western blotting immunohistochemical staining blood also collected progeny detect hfvtit anti hfviii inhibitors results total progeny delivered progeny identified bdd hfviiicdna transcription expression bdd hfviiicdna found exist liver kidneys transgenic mice hfviii plasma transgenic progeny respectively whilst transgenic mice showed results anti hfviii inhibitors negative progeny conclusions human fviii gene transgenic mice produced smgt technique express human fviii protein bodies
background erythropoietin epo essential stimulator erythropoiesis produced fetal liver important vascular remodeling modulation endothelial response pulmonary vasculature addition epo guides alveolar development along retinoic acid epo direct target retinoid pathway altered nitrofen induced congenital diaphragmatic hernia cdh model present study tested hypothesis synthesis epo suppressed rat model cdh materials methods pregnant rats treated either nitrofen vehicle gestational day fetuses sacrificed divided control cdh groups immunohistochemistry quantitative real time polymerase chain reaction pcr performedto determine expression ofepoin fetal liver kidney also estimated expression epo receptor fetal lung results relative epo mrna expression liver kidney significantly lower cdh group controls respectively addition results immunohistochemistry supported findings pcr analysis significant changes noted expression pattern epo receptor levels fetal lungs cdh group compared controls conclusions results reveal suppressed epo synthesis cdh fetus may contribute pathogenesis lung hypoplasia modification pulmonary vasculature cdh rat model wiley periodicals inc
study found ethyl acetate soluble fraction musa basjoo flowers rich source antioxidant due high total phenolic contents significant antioxidant activity ten phenolic compounds isolated plant gallic acid caffeic acid methyl ester guaiacylglycerol dihydroxyphenyl acrylic acid dihydroxyphenyl methoxy carbonyl ethyl ester thero guaiacylglycerol beta glycopyranoside quercitrin buein pentahydroxyflavanonol isoquercitrin bis dihydroxyphenyl hepta dien one addition compounds possessed potent strong free radical scavenging activity compounds powerful activity showed higher content implying important roles antioxidant activity musa basjoo flower study suggested components musa basjoo flower possessed good antioxidant capacities species could used prevention diseases related oxidant products human metabolism
critical barrier successful prevention treatment recurrent prostate cancer detection eradication metastatic therapy resistant disease despite fall diagnoses mortality reported incidence metastatic disease increased since prostate cancer arises cohesive groups intraepithelial neoplasia migrates muscle leaves gland via perineural invasion hematogenous dissemination current technological advances shown cohesive clusters tumor also known microemboli within circulation circulating tumor cell ctc profiles indicative disseminated prostate cancer disseminated tumor cells dtc found cohesive clusters phenotypic characteristic radiation drug resistant tumors recent reports cell biology informatics coupled mass spectrometry indicate integrin adhesome network provides explanation biophysical ability cohesive clusters tumor cells invade thorough muscle nerve microenvironments maintaining adhesion dependent therapeutic resistance targeting cohesive clusters takes advantage known ability extracellular matrix ecm adhesion promote tumor cell survival represents approach potential avoid progression drug radiotherapy resistance following review examine evidence development dissemination cohesive clusters metastatic prostate cancer published elsevier
plants employ rna silencing natural defense mechanism viruses counter defense viruses encode silencing suppressor proteins ssps suppress rna silencing proteins encoded poleroviruses identified ssp study demonstrated cotton leafroll dwarf virus clrdv genus polerovirus protein suppressed local silencing induced sense inverted repeat transgenes agrobacterium infiltration assay nicotiana benthamiana plants clrdv full length infectious cdna clone able infect benthamiana agrobacterium mediated inoculation also inhibited local silencing infiltration assays suggesting protein exhibits similar rna silencing suppression activity expressed full length viral genome hand protein efficiently inhibit spread systemic silencing signals moreover northern blotting indicated protein inhibits generation secondary primary small interfering rnas study clrdv suppression activity may contribute understanding molecular mechanisms involved induction cotton blue disease clrdv infection elsevier rights reserved
thermostable amidase produced geobacillus subterraneus purified homogeneity yield specific activity molecular weight native enzyme estimated kda amidase subterraneus constitutive nature active broad range temperature degrees half life min degrees inhibition enzyme activity observed presence metal ions thiol reagents presence mid chain aliphatic amino acid amides enhances enzymatic activity acyl transferase activity detected propionamide butyramide nicotinamide enzyme showed moderate stability toward toluene carbon tetrachloride benzene ethylene glycol except acetone ethanol butanol propanol dimethyl sulfoxide max purified amidase nicotinamide mol min protein analyzing michaelis menten kinetics results maldi tof analysis indicated amidase homology amidase geobacillus first reported wide spectrum thermostable amidase thermophilic subterraneus
authors describe rapid sensitive magnetic relaxation switch mrsw aptasensor determination food borne pathogen pseudomonas aeruginosa aptamer aeruginosa covalently bound superparamagnetic iron oxide nanoparticles incubation aeruginosa bacteria captured aptamer affects formation spio aggregates resulting strong increase spin spin relaxation time utilized analytical information quantify bacteria optimized conditions assay linear range extends cfuai cfuai detection limit cfuai ratio method applied detection aeruginosa spiked real food drinking water samples validated established plate counting method aptasensor considered represent promising platform determination aeruginosa conceivably method may extended food borne bacteria biomolecules respective aptamers available
rnase ribonucleoprotein endoribonuclease involved end processing pre trnas rna component catalytic subunit essential enzyme bacterial rnase one rna one protein component conserved rnr motif bacterial rnase protein components involved interaction rna component work reconstituted rnase tuberculosis vitro investigated role histidine rnr motif catalysis expressed protein rna components mycobacterial rnase coli purified reconstituted holoenzyme vitro histidine rnr motif mutated alanine asparagine site directed mutagenesis rna component alone showed activity pre trna ala substrate high magnesium concentrations rna protein components associated together manifest catalytic activity low magnesium concentrations histidine rnr motif tuberculosis rnase protein component found important catalytic activity stability enzyme generally rnase tuberculosis functions like bacterial enzymes histidine rnr motif tuberculosis appears able substitute optimally asparagine found majority protein components bacterial rnase enzymes
long day plant petunia hybrida fantasy red found produce considerable number premature abortive flower buds placed short light period stress suppression subtractive hybridization ssh performed compare gene expression profiles normal abortive petunia flower buds induced short light periods using reverse northern blotting total positive clones successfully identified sequenced non redundant differentially expressed transcripts obtained according blastgo kegg pathway analyses significant distinct cellular component identified mitochondrion notable different metabolic pathways ascribed carbohydrate metabolism lipid metabolism quality ssh libraries verified quantitative real time reverse transcription pcr qrt pcr analysis genes addition six genes demonstrated temporal spatial specificity using qrt pcr implying might responsible premature flower abortion furthermore phms sequence sharing high degree similarity male sterility gene characterized inconsistent expression pattern predicted novel role phms flower bud abortion data presented provide insight molecular mechanisms premature flower abortion short light periods hence may value assessing candidate genes potential creating novel germplasms enhanced photoperiod stress tolerance crown copyright published elsevier rights reserved
cases pulp exposure due deep dental caries severe traumatic injuries existing pulp capping materials limited ability reconstruct dentin pulp complexes result pulpectomy low potentials accelerate dental pulp cell activities migration proliferation differentiation therefore development effective therapeutic agents anticipated direct pulp capping dental pulp tissues enriched dental pulp stem cells dpscs authors investigated effects semaphorin semaa various functions human dpscs vitro reparative dentin formation vivo rat dental pulp exposure model immunofluorescence staining revealed expression semaa receptor nrp neuropilin rat dental pulp tissue human dpsc clones semaa induced cell migration chemotaxis proliferation odontoblastic differentiation dpsc clones addition semaa treatment dpsc clones increased catenin nuclear accumulation upregulated expression farp gene ferm rhogef pleckstrin domain protein activated rac dpsc clones furthermore rat dental pulp exposure model semaa promoted reparative dentin formation dentin tubules well aligned odontoblast like cell layer dental pulp exposure site novel reparative dentin almost completely covering pulp tissue direct pulp capping findings suggest semaa could play important role dentin regeneration via canonical wnt catenin signaling semaa might alternative agent direct pulp capping requires study
background eotaxin ccl plays important role asthma acts chemokine receptor ccr expressed hematopoietic nonhematopoietic cells lung objective determine whether eotaxin ccl modulates lung bronchial fibroblast properties thereby might contribute airway remodeling methods ccr expression characterized lung fibroblast line mrc flow cytometry fluorescent microscopy pcr northern blotting primary bronchial fibroblasts flow cytometry fibroblasts human lung tissue confocal laser microscopy effects eotaxin ccl lung fibroblast migration boyden chamber proliferation tritiated thymidine incorporation smooth muscle actin expression elisa dimensional collagen gel contraction floating gel pro alpha collagen mrna northern blotting total collagen synthesis tritiated proline incorporation matrix metalloproteinase activity gelatin zymography tgf beta release elisa evaluated contribution eotaxin ccl ccr binding lung fibroblasts also investigated neutralizing experiments results ccr constitutively expressed cultured lung primary bronchial fibroblasts colocalizes specific surface markers human fibroblasts lung tissue eotaxin ccl selectively modulates fibroblast activities increasing proliferation matrix metalloproteinase activity collagen synthesis differentiation myofibroblasts contractility collagen gel tgf beta release eotaxin ccl enhances migration lung fibroblasts response nonspecific chemoattractants effect completely inhibited anti ccr neutralizing antibodies conclusion data demonstrate eotaxin ccl direct selective profibrogenic effect lung bronchial fibroblasts providing novel mechanism whereby eotaxin ccl participate airway remodeling asthma
clustered regularly interspaced short palindromic repeat crispr crispr associated protein cas system discovered adaptive immunity mechanism prokaryotes emerged popular tool precise alterations genomes diverse species crispr cas system taken world genome editing storm recent years popularity tool altering genomes due ability cas protein cause double stranded breaks dna binding short guide rna molecules produced dramatically less effort expense required production transcription activator like effector nucleases talen zinc finger nucleases zfn system exploited many species prokaryotes higher animals including human cells evidenced literature showing increasing sophistication ease crispr cas well increasing species variety applicable technology poised solve several complex molecular biology problems faced life science research including cancer research review highlight recent advancements crispr cas system editing genomes prokaryotes fungi plants animals provide details software tools available convenient design crispr cas targeting plasmids also discuss future prospects advanced molecular technology crown copyright published elsevier rights reserved
around primary immunodeficiencies antibody deficiencies functional tests useful tools study cell functions vitro however accepted guidelines performing evaluating functional tests issued yet report experience study cell functions infancy throughout childhood show independent stimulation cpgmeasures proliferation differentiation potential memory cells switched memory cells respond better igm memory cells hand cdl dependent stimulus induce plasma cell differentiation causes proliferation naive memory cells childhood production plasmablasts response cpg increases age mirroring development memory cells response cdl change age patients selective iga deficiency sigad observed switched memory cells reduced due absence iga memory cells agreement iga plasma cells generated response cpg unexpectedly cells sigad patients show reduced proliferative response cdl results demonstrate functional tests important tool assess functions humoral immune system
single enzyme microsomal catalyzes alpha hydroxylase activity needed make cortisol subsequent lyase activity needed produce carbon precursors sex steroids biochemical decision concerning whether stops alpha hydroxylation proceeds lyase activity largely dependent three post translational factors first lyase activity especially sensitive molar abundance electron transfer protein oxidoreductase por second cytochrome strongly promotes lyase activity principally acting allosteric factor promoting interaction por although minor role alternative electron transfer protein wholly excluded third serine threonine phosphorylation promotes lyase activity apparently promoting interaction por principal kinase phosphorylates confer lyase activity appears alpha mapk increases maximum velocity lyase reaction effect michaelis constant lyase detectable effect alpha hydroxylase reaction kinases also phosphorylate shown affect enzymology understanding mechanisms regulating lyase activity essential understanding hyperandrogenic disorders premature exaggerated adrenarche polycystic ovary syndrome also design selective lyase inhibitors use hyperandrogenic states sex steroid dependent cancers elsevier ireland ltd rights reserved
piwi interacting rnas pirnas small non coding rnas reported mostly germ line cells cancer cells however presence pirnas whitespotted bamboo shark liver yet reported previous study micrornas shark liver pirnas detected small rnas sequenced solexa technology total pirnas predicted found shark liver selected pirnas high significantly differential expression normal regenerative liver tissues subsequent verification northern blotting ten pirnas identified six matched known pirnas pirnabank actual expression six known four novel pirnas validated qrt pcr addition total target genes pirnas predicted miranda pathway function analyses five pirnas could annotated eighteen annotations results indicated identified pirnas involved many important biological responses including immune inflammation cell specific differentiation development angiogenesis manuscript provides first identification pirnas liver whitespotted bamboo shark using solexa technology well elucidation regulatory role pirnas whitespotted bamboo shark liver findings may provide useful resource may facilitate development therapeutic strategies liver damage elsevier rights reserved
micrornas class small non coding endogenous rnas involved cancer development progression microrna mir reported oncogenic tumor suppressive role human tumors role mir ovarian cancer poorly understood present study expression levels mir apoptosis protease activating factor apaf protein samples ovarian cancer tissues cell lines iose ovcar skov detected quantitative reverse transcription polymerase chain reaction qrt pcr western blot analysis respectively cell proliferation measured using cell counting kit cck cell migration invasion detected using transwell assay cell apoptosis evaluated flow cytometry hoechst staining luciferase assay performed verify putative target site mir utr apafi mrna expression mir upregulated ovarian cancer tissues patients increased mir expression levels reduced disease free survival overall survival compared low mir expression transfection skov cell lines mir inhibitor induced apaf protein expression suppressed cell proliferation migration promoted tumor cell apoptosis conclusion apaf gene confirmed direct target mir overexpression apaf suppressed ovarian cancer cell proliferation induced cell apoptosis vitro findings indicate mir apaf studied potential new diagnostic prognostic biomarker ovarian cancer
objectives growth hormone main mediator insulin like growth factor igf play fundamental role human metabolism previous epidemiological studies investigating association igf bone turnover markers btms yielded conflicting results limited study design sample size therefore aimed investigate associations serum levels igf igf igf binging protein igfbp ratio levels btms including procollagen type terminal propeptide pinp terminal telopeptides type collagen ctx bone specific alkaline phosphatase bap methods data men women participated first follow study health pomerania used igf igfbp levels measured using chemiluminescent immunometric assays immulite analyzer btm levels measured ids isys multi discipline automated analyser analyses variance anova quantile regression models calculated results men years premenopausal women anova quantile regression analyses revealed positive associations igf even stronger igf igfbp ratio pinp per unit increase igf igfbp ratio men beta women ctx men women furthermore postmenopausal women igf igf igfbp ratio inversely related ctx levels whereas inverse shaped relation igf igfbp ratio pinp found regarding bap observed borderline significant associations igf igf igfbp ratio older subjects conclusion igf levels particularly free igf estimated igf igfbp ratio positively related pinp bone formation marker ctx bone resorption marker healthy adult men younger years premenopausal women older subjects found positive well negative relations btms investigated elsevier inc rights reserved
folic acid folates vitamin essential human metabolism nutritional importance mainly lies prevention neural tube formation defects degenerative diseases determination folates food matrices complex task due large number chemical compounds included definition folates present study hplc fluorescence detection hplc methodology optimized validated characterize total folates vegetables application mediterranean wild vegetables provide new data folates content species scarcely studied far highest folates contents found leaves rumex pulcher beta maritima anchusa azurea mill respectively well tender leaves stems foeniculum vulgare mill silene vulgaris moench garcke respectively data show studied wild vegetables mostly good source folates compared folate rich plants spinach parsley chard utilized plants deserve attention potential value current diets good alternative diversification vegetable intake represent important added value rich sources vitamin
brain derived neurotrophic factor bdnf tyrosine kinase receptor trkb reported associated poor prognosis neuroblastoma patients previous studies indicated bdnf activation trkb induces chemo resistance activation phosphoinositide kinase pik akt pathway study investigated role bdnf trkb metastasis tetracycline regulated trkb expressing cell line used scratch wound healing assay boyden chamber migration invasion assays performed study migration invasion cells tumor xenograft model using scid beige mice utilized detect metastasis tumors vivo inhibitors pik mapk akt mtor used western blotting performed study expressions akt erk mtor results showed trkb expressing cells bdnf treatment significantly increased gap closing scratch wound healing assay also significantly enhanced numbers migrating cells invading cells boyden chamber migration invasion assays vivo distant metastases significantly increased mice trkb expressing xenograft tumors compared non trkb expressing tumors pre treatment inhibitors pik mapk akt perifosine mtor rapamycin blocked bdnf trkb induced increases cell migration invasion cells also blocked bdnf trkb induced expressions akt erk mtor data indicated bdnf trkb increased metastasis via pik akt mtor mapk pathways bdnf trkb downstream targets may potential targets treatment metastasis
four groupa streptococcal glycolipopeptide vaccine candidates different lipidic adjuvanting moieties prepared characterized immunogenicity compounds evaluated macrophage dendritic cell uptake studies vivo quantification systemic igg antibody elisa three candidates showed significant induction igg response
rationale leukocyte telomere length ltl biological marker aging shorter ltl associated adverse cardiovascular outcomes reduced regenerative capacity proposed mechanism bone marrow derived circulating progenitor cells involved tissue repair regeneration objective main objective study examine relationship ltl progenitor cells impact adverse cardiovascular outcomes methods results measured ltl quantitative polymerase chain reaction outpatients age years men coronary artery disease circulating progenitor cells enumerated flow cytometry adjustment age sex race body mass index smoking status previous myocardial infarction shorter ltl associated lower cell count shorter ltl levels lower adjustment aforementioned factors short ltl low levels predicted adverse cardiovascular outcomes death myocardial infarction coronary revascularization cerebrovascular events independently hazard ratio confidence interval hazard ratio confidence interval respectively comparing patients short ltl low cell count greatest risk adverse outcomes hazard ratio confidence interval conclusions although shorter ltl associated decreased regenerative capacity ltl circulating progenitor cell levels independent additive predictors adverse cardiovascular outcomes coronary artery disease patients results suggest biological aging reduced regenerative capacity contribute cardiovascular events independent conventional risk factors
ability monitor progress single molecule enzyme reactions often limited need use fluorogenic substrates method based principle millikan oil drop experiment developed monitor change charge substrates bound nanoparticle offers means detecting single enzyme reactions without fluorescence detection proof principle ability monitor reactions result change substrate charge polymerization single dna template detected custom oligonucleotide synthesized allowed attachment single dna templates gold nanoparticles single polymer tether nanoparticles tethered surface microfluidic channel positions nanoparticles subjected oscillating electric field monitored using dark field microscopy short averaging times signal noise level low enough discriminate changes charge less polymerization long dna template demonstrated ability use system monitor single molecule enzymatic activity finally nanoparticle surfaces modified thiolated moieties reduce shield number unproductive charges allow improved sensitivity elsevier inc rights reserved
issue clinical vaccine immunology jensen clin vaccine immunol https doi org cvi describe dual purpose attenuated mycobacterium tuberculosis simian immunodeficiency virus vaccine amtb siv interestingly immunized infant macaques required fewer oral exposures siv become infected relative nonimmunized animals authors hypothesized augmented susceptibility siv due activation cells trained immunity commentary explores possible relationship trained immunity enhanced cell responses increased susceptibility human immunodeficiency virus hiv
background mexican born children living united states lower prevalence asthma children although children mexican descent near arizona sonora border genetically similar differences environmental exposures might result differences asthma prevalence across region objective objective study determine prevalence asthma wheeze children varies across sonora border methods international study asthma allergy children written video questionnaires administered adolescents middle schools tucson school nogales schools nogales sonora mexico schools prevalence asthma symptoms compared analyses schools limited selfidentified mexican american students results compared sonoran reference school adjusted odds ratio asthma significantly higher schools confidence interval adjusted wheeze past year significantly higher schools written questionnaire significantly higher sonoran school video questionnaire compared school conclusions asthma wheeze prevalence differed significantly schools higher united states environmental factors may account differences could provide insight mechanisms protection asthma american academy allergy asthma immunology
hepatic peroxisomal alanine glyoxylate aminotransferase act pyridoxal phosphate plp enzyme whose deficiency responsible primary hyperoxaluria type autosomal recessive disorder last years knowledge characteristics agt transfer information pathogenic variants significantly contributed improvement understanding molecular level pathogenesis review spectroscopic features coenzyme binding affinity steady state kinetic parameters well sensitivity thermal chemical stress two allelic forms act major agt minor agt allele described moreover summarize characterization obtained means biochemical bioinformatic analyses following causing variants recombinant purified forms associated major allele encoded background minor allele mutants segregate either major allele minor allele data correlated previous clinical cell biology results allow highlight functional differences agt agt identify structural functional molecular defects pathogenic variants iii improve correlation genotype enzymatic phenotype foresee understand molecular basis responsiveness pyridoxine treatment patients bearing mutations pave way new treatment strategies article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
temperature recovering curve derived cold stimulation experiment reveals human inner metabolism status changes curve involve many heat influence factors metabolic heat production important paper adopts tikhonove regularization method eliminate measured infrared image data errors constructs numerical model based independent component analysis ica compute two main heat components heat transfer quantity blood perfusion heat production quantity metabolism different component results obtained two typical recovering curves metabolic heat production quantity comparisons diabetic healthy show metabolic function healthy much better diabetic numerically provides novel method estimate human metabolism quantitatively
structured triglycerides stg introduced clinical purpose recently registered lipid emulsion long chain fatty acids medium chain fatty acids randomly attached glycerol molecule studies animals showed improvement nitrogen balance studies patients demonstrate improvement least equivalent effects nitrogen balance compared lct physical mixture mct lct studies serum triglycerides free fatty acid concentrations lower indicating faster clearance blood beta butyrate concentrations higher reach toxic levels influence serum value modulatory effects immune system stg demonstrated hypotheses discussed influence lipids protein metabolism recently introduced stg open door really new structured triglycerides demand specific fatty acids linked specific position glycerol molecule objective realising specific clinical effects elsevier science ltd rights reserved
henoch schonlein purpura hsp systemic vasculitis mediated autologous immune complex animal models hsp scarce describe characteristics hsp rabbit model acute recovery phase first constructed hsp rabbit models assessed immunologic indicators models enzyme linked immunosorbent assay immunoturbidimetry histomorphological characteristics analyzed haematoxylin eosin immunofluorescence special staining acute stage antigen challenge model group rabbits featured skin ecchymosis abnormal laboratory examination results three weeks following allergic reaction purple spots improved markedly edema blood seeping decreased obvious inflammation present skin kidneys joints gastrointestinal lung liver serological results tnf alpha iga igg tropi alb still abnormal iga expressed skin kidney eosinophils expressed skin lungs increased rabbit model mimic human hsp lesions symptoms pathology immunology may provide valuable insight pathogenesis hsp serve tool future therapeutic development targeting hsp
purpose keratoconus thinning central cornea etiology unknown may result degrading collagen type major protein cornea collagen matrix metalloproteinase mmp able degrade collagen type basement membrane extracellular matrix ecm mmp enzymatic activity inhibited tissue inhibitor metalloproteinase timp present study sought investigate evaluate effects single nucleotide polymorphisms cola mmp timp risk iranian population sample methods case control study performed patients healthy controls genotyping cola mmp timp polymorphisms done using amplification refractory mutation system polymerase chain reaction arms pcr result findings showed rsg polymorphism decreased risk rsa associated allele significantly overrepresented healthy individuals rsa chromosome increased risk females males allele frequency associated risk protection conclusions study indicates population cola polymorphism decreased risk however timp polymorphism associated increased risk
natural cytotoxicity receptor ncr family constituted nkp nkp nkp humans expressed mainly natural killer cells encoded ncr ncr ncr genes respectively ncrs classically defined activating receptors trigger cytotoxicity cytokine responses cells upon engaging ligands tumor cells several new findings however challenged model identified alternative mechanisms regulating function ncrs recent reports indicate ligand matters since interaction nkp distinct ligands target cells either activate inhibit cells also ncrs found interact distinct specificities various heparan sulfate glycosaminoglycans complex polysaccharides found extracellular matrix cell surface heparan sulfate proteoglycans hspgs ncrs engage hspgs trans ligand target cells cis cell surface regulate receptor ligand interactions cell activation number splice variants ncr ncr also identified predominant expression certain variants results inhibitory signaling nkp nkp several recent studies found selective expression inhibitory splice variants significantly influence outcome contexts cancer infection pregnancy findings establish ncr functions diverse originally thought better understanding splice variant expression profiles ligand interactions needed establish functional regulation context human health
human metabolism regulated internal clock circadian rhythm several factors included regulatory pathway genes per cry tim hormones cortisol catecholamines melatonin insulin drugs enzymes sleep disorders diseases one contributes different degree order enhance therapeutic result include factors clusters instead targeting factor one one malignances deregulate gene protein expression production enzyme production addition induce fatigue insomnia stress sleep disorders factors finally contribute minimizing efficiency chemotherapy treatment quality life addition circadian rhythm disruption induces tumor genesis stress regulates defense repair mechanisms human body current mini review underlying mechanism circadian rhythm provided along influence sleep disturbances cancer patient therapy proposal presented divide circadian rhythm sleep disturbances two major clusters different management however common target improve treatment efficiency quality life finally chrono chemotherapy administration model proposed order less chemotherapy side effects
creatine recommended dietary supplement especially athletes therapeutic potential also discussed assumed human body uses formation phosphocreatine necessary muscular work source energy production body closely connected methionine cycle guanidinoacetate gaa final step methylated adenosylmethionine sam increased availability sam phosphatidylcholine sarcosine synthesis potentially stimulate endogenous production betaine thus methylation homocysteine hcy form methionine subject methylenetetrahydrofolate reductase mthfr homozygote lowered plasma hcy mol mol following one month supplementation day opposite genotypes whose hcy levels tended increase still normal ranges suppose supplementation stimulates pathways leading production sarcosine serve regenerate tetrahydrofolate thf form methylene thf could potentially increase mthfr enzyme activity may later result increased hcy methylation supplementation significantly effects metabolism one carbon unit potentially lower body demands methyl groups could beneficial case reduced enzyme activity mthfr polymorphism
previous studies laboratory shown one earliest events hepatocarcinogenesis albumin antigen alb transgenic rat duplication chromosome region contains imprinted coordinately regulated genes lgf also shown duplication associated biallelic expression normally monoallelically expressed results however seemingly odds studies mouse shown conservation fetal regulatory patterns two genes hepatic neoplasms therefore aimed study determine allelic origin lgf expression hepatocellular carcinomas transgenic rat sprague dawley alb transgenic rats brown norway rats reciprocally mated expression lgf hepatocellular carcinomas resulting transgene positive female rats analyzed northern blotting pcr determined lgf expressed exclusively paternal allele prompted study methods allelic origin hepatocellular carcinomas order determine two genes remained coordinately regulated results demonstrate fetal like expression lgf deregulation singular hepatocellular carcinomas rat results imply another regulatory mechanism generally accepted icr ctcf mechanism may play role control lgf expression wiley liss inc
macromolecular crystallography beamline part european molecular biology laboratory integrated facility structural biology petra iii desy hamburg germany user operation since mid tunable across energy range kev support crystallographic data acquisition exploiting wide range elemental absorption edges experimental phase determination adaptive kirk patrick baez focusing system provides ray beam high photon flux tunable focus size adapt diverse experimental situations data collections energies low kev lambda angstrom possible due beamline design minimizing background maximizing photon flux particularly low energy photons kev custom calibration pilatus detector use low energies availability helium path high energies high photon flux photons kev combined large area detector mounted theta arm allows data collection sub atomic resolution angstrom peak flux photons reached kev automated sample mounting available means robotic sample changer marvin dewar capacity samples close proximity beamline laboratories set sample preparation characterization laboratory specifically equipped site heavy atom derivatization library compounds available beamline users
guillain barre syndrome gbs autoimmune mediated peripheral neuropathy unknown cause however quarter gbs patients suffered recent bacterial viral infection axonal forms disease especially common patients proteomics good methodological approach discovery disease biomarkers recently proteomics studies gbs neurodegenerative diseases focused analysis cerebrospinal fluid csf however serum represents attractive alternative csf easier sample potential biomarker discovery goal research identification serum biomarkers associated recovery gbs address objective quantitative proteomics approach used characterize differences serum proteome gbs patient healthy identical twin order lessen variations due differences genetic background additional serum samples collected unrelated gbs spinal cord injury sci patients similar medications proteomics results validated elisa using sera additional gbs patients healthy individuals gbs sci patients recovering acute phase disease results showed piccolo protein essential maintenance active zone structure constitutes potential serological correlate recovery gbs results provided first evidence piccolo putative role gbs suggesting candidate target developing serological marker disease recovery
hydroxylated polybrominated diphenyl ethers pdbes exogenous bioactive compounds originate large extent anthropogenic activities although also naturally produced environment present study nine new authentic pbde reference standards corresponding methyl ether derivatives meo pbdes synthesised characterised nmr spectroscopy mass spectrometry seven authentic reference standards prepared thereafter tentatively identified pooled human blood sample tentatively identified pbdes hydroxy pentabromodiphenyl ether hydroxy pentabromodiphenyl ether hydroxy pentabromodiphenyl ether hydroxy hexabromodiphenyl ether hydroxy hexabromodiphenyl ether hydroxy hexabromodiphenyl ether hydroxy heptabromodiphenyl ether additional seven pbdes tentatively identified pooled human blood sample one pbde hydroxy pentabromodiphenyl ether identified human blood identification performed using gas chromatography mass spectrometry recording bromine ions tentative identification supported peaks relative retention times rrts compared authentic references two columns different polarities hexa heptabrominated pbdes three different columns pentabrominated pbdes pbde congeners likely originate human metabolism flame retardant polybrominated diphenyl ethers pbdes due relatively high concentrations pbdes human blood sample fact pbdes could form tentatively identified pbdes via metabolic direct hydroxylation via shift elsevier ltd rights reserved
black rot caused xanthomonas campestris campestris pammel dowson xcc one damaging diseases cauliflower crucifers order investigate molecular resistance mechanisms find genes related black rot resistance cauliflower suppression subtractive hybridization ssh cdna library constructed using resistant line susceptible near isogenic line tester driver respectively total clones obtained library reverse northern blotting sequencing analysis homology searching showed clones represent unique sequences library included many defense disease resistant related genes plant defensin gene pdf lipid transfer protein thioredoxin gene expression profiles genes corresponding different functional categories monitored real time pcr results showed expression induction genes susceptible line response xcc quicker intense reaction delayed limited results imply regulated genes might involved cauliflower responses xcc infection information obtained study could used understand molecular mechanisms disease response cauliflower xcc stress
acetone good marker metabolic stress volatile rapidly equilibrated ketone bodies produced human metabolism body utilizes predominately fat meet energy requirements blood breath acetone concentrations increase elevated concentrations breath acetone indicate normal response caloric imbalances diet diseased state untreated diabetes paper describes novel method acetone detection uses gas solid chemical reaction acetone hydroxylamine hydrochloride produce easily detectable chemical species hcl breath samples passed reactor filled solid amount hcl gas released measured sensitive near infrared diode laser spectroscopy breath acetone instrument described compact low power portable
variations enzymology functional capacity neonatal organ systems care must taken interpreting changes clinical chemistry values using standard adult reference ranges although published reference ranges provided based available research current literature recommended ranges used guidelines owing lack standardization reference intervals among reference laboratories article intended provide fully comprehensive review hematologic biochemical changes occur birth months age help provide practical guideline interpretation useful diagnostic information determining state health cause illness young dog cat
introduction diagnosis facioscapulohumeral dystrophy type fshd supported suggestive clinical presentation associated heterozygous contraction repeat array chromosome state art fshd phenotype widely variable course great inter intrafamilial heterogeneity three clinical forms distinguished classical phenotype associated four seven repeat units variable course severe infantile form one three mild phenotype associated borderline molecular level contraction pathogenic needs occur specific chromosomal background namely allelic variant chromosome cases fshd clinically suspected diagnosis genetically confirmed dna test using southern blotting hybridization set probes however diagnosis fshd remains challenging firstly patients may present atypical phenotype highly focal unusual symptoms secondly potential pitfalls genetic diagnosis fshd resulting false positive false negative results absence genetic confirmation investigations mainly emg muscle biopsy needed rule another diagnosis cases clear diagnosis permissive chromosome without contraction fshd may suspected perspectives molecular combing new technique permits visualization sizing repeat array genetic background stretched single dna fibers fluorescence microscopy tool improve genetic diagnosis fshd patients conclusion diagnosis fshd mainly supported clinical features clinicians need aware unusual presentations disease wide spectrum intrafamilial variability lack good correlation genotype phenotype present challenges genetic counseling prognostication studies needed concerning penetrance genotype phenotype correlation elsevier masson sas rights reserved
background prescribing pattern epinephrine time indicator secular trend anaphylaxis however well known population level united states objective evaluate trend prescriptions epinephrine autoinjectors olmsted county minn residents methods outpatient prescriptions epinephrine identified among residents olmsted county minn january december used first prescription per patient per year first prescription per patient study period calculate incidence rates incidence rates per person years calculated using patients prescribed epinephrine per year numerator age sex specific counts population olmsted county denominator relationships age group sex year prescription incidence rates assessed fitting poisson regression models using sas procedure genmod results overall incidence rate epinephrine autoinjector prescriptions study period per person years confidence interval prescription rates per patient per year increased time annual rate increase rates per patient remained stable year incidence rates overall higher women compared men ages incidence rates higher boys compared girls age incidence rates higher women compared men conclusions overall rate epinephrine autoinjector prescriptions increased rate first time prescriptions stable childhood boys likely receive prescription girls reversed later ages american academy allergy asthma immunology
background objectivesamelogenin proteins major constituent developing extracellular enamel matrix believed exclusively epithelial origin recent studies suggested amelogenins might induce differentiation maturation various cells including cementoblast lineage cells however residues comprising active site amelogenin remain unclear purpose study identify active site region amelogenin studying effects amelogenin fragments osteogenic differentiation cementoblasts material methodsamelogenin fragments lacking terminus terminus fragment consisting terminal region peptide synthesized purified human cementoblast lineage cells cultured osteogenic differentiation medium treated peptide mrna levels bone markers examined real time polymerase chain reaction analysis alkaline phosphatase activity calcium deposition also determined mineralization evaluated alizarin red staining resultsthe osteogenic differentiation human cementoblast lineage cells significantly enhanced treatment peptide whereas significant effect compared untreated controls conclusionsthe terminus amelogenin promotes osteogenic differentiation human cementoblast lineage cells indicating possible utility peptide periodontal tissue regeneration
examples lake charr salvelinus namaycush diversity occur within largest deepest lakes north america report rush lake first example small lake two lake charr morphs lean huronicus morphology diet life history genetics examined demonstrate existence morphs determine potential influence evolutionary processes led formation maintenance results showed huronicus morph caught deep water deeper body smaller head jaws higher eye position greater buoyancy deeper peduncle shallow water lean morph huronicus grew slower smaller adult size older mean age lean morph genetic comparisons showed low genetic divergence morphs indicating incomplete reproductive isolation phenotypic plasticity differences habitat use deep shallow waters associated variation foraging opportunities seems sufficient maintain two morphs demonstrating important roles resource polymorphism rush lake expands previous explanations lake charr intraspecific diversity large small lakes reproductive isolation presence gene flow associated strong ecological drivers published article contributed government employees work public domain usa
manganese superoxide dismutase sod plays crucial role antioxidant responses environmental stress determine whether sod affects heat resistance gracilaria lemaneiformis cloned sod cdna sequences two strains red alga wild type cultivar cdna sequences contained orf encoding amino acid residues cdna sequences deduced amino acid sequences two strains shared relatively high identity intron existed genomic dna sod lemaneiformis southern blotting indicated multiple copies possibly four sod strains wild type cultivar sod mrna transcription sod activity increased high temperature stress cultivar heat resistant based sod activity research suggests may direct relationship sod activity heat resistance lemaneiformis
evidence differences among individuals white matter microstructure measured diffusion tensor imaging dti genetic control however little known relative contribution genetic environmental effects different diffusivity indices among late middle aged adults examined magnitude genetic influences fractional anisotropy mean axial radial diffusivities male twins aged years old using atlas based registration approach delineate individual white matter tracts investigated mean dti based indices within corpus callosum bilateral tracts regions interest combined four diffusivity indices high heritability global level magnitude genetic effects individual tracts varied tracts showing significant heritability estimates despite narrow age range community based sample age correlated four diffusivity indices global level sum diffusion indices proved substantial heritability tracts heritability estimates similar magnitude different diffusivity measures future studies could aim discover particular set genes underlie significant heritability white matter microstructure wiley periodicals inc
aim clone delta fatty acid desaturase gene moltierella isabellina functionally characterize gene vitro vivo methods reverse transcriptional polymerase chain reaction pcr used clone open reading frame delta fatty acid desaturase gene mortierella isabellina plasmids pemicl pymicl constructed pemicl transformed escherichia coli coll strain using cacl method expression induction iptg ptmicl transformed saccharomyces cerevisiae strain vsc using lithium acetate method expression induction galactose northern blotting method used investigate effect temperature transcriptional level gene cerevisiae strain vsc results recombinant plasmids pemicl ptmicl successfully constructed transformed coli cerevisiae separately appropriate method induction iptg galactose found expression delta fatty acid desaturase genes coli cerevisiae appropriate conditions led production active delta fatty acid desaturase could convert oleic acid respectively linoleic acid detection vitro vivo conclusion cloning expression isabellina gene coli cerevisiae successfully completed wjg press rights reserved
lpl hydrolyzes triglycerides plasma lipoproteins due complex regulation mechanism difficult mimic physiological conditions lpl acts vitro demonstrate isothermal titration calorimetry itc using human plasma substrate overcomes several limitations previously used techniques high sensitivity itc allows continuous recording heat released hydrolysis initial rates kinetics complete hydrolysis plasma lipids studied heat rate shown correspond release fatty acids linearly related amount added enzyme either purified lpl postheparin plasma addition apoc iii reduced initial rate hydrolysis lpl inhibition became less prominent time lipoproteins triglyceride poor addition angiopoietinlike protein angptl angptl caused reduction activity lpl via two step mechanism jlr conclude itc used quantitative measurements lpl activity interactions vivo like conditions comparisons properties plasma samples patients control subjects substrates lpl well testing drug candidates developed aim affect lpl system
objectives goal evaluate effect rapamycin mtor inhibitor type human endometrial cancer tumor explants methods short term tissue culture fresh endometrial cancer tumor explants performed cell proliferation assessed mts assay treatment rapamycin akt pten status documented western blotting effect rapamycin phosphorylated also assessed western blotting real time pcr used quantify htert mrna expression telomere length determined terminal restriction fragment southern blotting results thirteen fresh endometrial cancer tumor explants nine type four type placed short term culture treated rapamycin nine endometrial cancer tumors responded rapamycin median sensitivity rapamycin independent pten akt status tumors reduction phosphorylated reduction phosphorylated rapamycin decreased htert mrna expression endometrial cancer tumors telomere length correspond responsiveness drug conclusions rapamycin demonstrated activity fresh endometrial tumor explants independent pten akt status tumors demonstrated reduction phosphorylated without significant change cellular proliferation suggesting additional pathways may modulate cellular proliferation thus mtor inhibitors may useful targeted therapy type type endometrial cancers search remains predictive biomarker sensitivity therapy elsevier inc rights reserved
background ige binding dna aptamer known inhibit interaction ige high affinity ige receptor epsilon aptamers widely used studied relatively little investigation kinetics energetics interactions targets either single molecule ensemble methods methods dissociation kinetics ige complex effects temperature ionic strength studied using fluorescence anisotropy single molecule spectroscopy activation parameters calculated results dissociation ige complex showed strong dependence temperature salt concentration ige complex calculated nacl nacl mgcl degrees dissociation activation energy ige complex kcal mol nacl mgcl interestingly found mutant stabilized stem structure showed slower dissociation kinetics compared single molecule observations surface immobilized ige showed much faster dissociation kinetics heterogeneity observable ensemble techniques conclusions increasing value increasing salt concentration attributed electrostatic interactions ige found changes activation enthalpy activation entropy insignificant increasing nacl concentration slower dissociation mutant ige complex likely due enhanced stability aptamer general significance activation parameters obtained applying transition state analysis kinetic data provide details mechanisms molecular recognition applications drug design single molecule dissociation kinetics showed greater kinetic complexity observed ensemble solution systems potentially reflecting conformational heterogeneity aptamer article part special issue entitled physiological enzymology protein functions elsevier rights reserved
continuous expansion single cell biology observation behaviour individual cells extended durations high accuracy become problem central importance surprisingly even yeast cells relatively regular shapes solution proposed reaches high quality required long term experiments segmentation tracking based brightfield images present cellstar tool chain designed achieve good performance long term experiments key features use new variant parametrized active rays segmentation neighbourhood preserving criterion tracking use iterative approach incrementally improves quality graphical user interface enables manual corrections errors use automated correction related errors parameter learning created benchmark dataset manually analysed images compared cellstar six tools showing high performance notably long term tracking community effort set website yeast image toolkit benchmark evaluation platform gather additional information provided others
referring two recent publications propose clinical reproductive immunology decades stagnated reproductive medicine including assisted reproduction failed accept embryo implantation immune system driven process dependent establishment maternal tolerance toward implanting fetal semi allograft complete allograft cases oocyte donation pregnancy represents biologically unique period temporary period gestation restricted tolerance otherwise known association parasitic infections rather investigating immune pathways necessary induce rather unique state tolerance toward rapidly growing parasitic antigen load fetus field instead concentrated irrelevant secondary immune phenomena immunological noise therefore surprise interesting recent research offering new potential insights maternal tolerance pregnancy mostly published outside field reproductive medicine research offers evidence existence inducible maternal tolerance pathways ability improving maternal fecundity potentially reducing late pregnancy complications premature labor preeclampsia eclampsia due premature abatement maternal tolerance increasing evidence also suggests tolerance inducing immune pathways similar successful pregnancy successful organ transplantation likely also tolerance self prevention autoimmunity identifying isolating pathways therefore may greatly benefit three clinical areas research reproductive immunology accordingly redirected
glycogen synthase kinase gsk serine threonine protein kinase development gsk inhibitor alsterpaullone therapeutic agent mood disorders alzheimer disease bipolar disorder required synthesis suitably labeled drug product use human metabolism pharmacokinetic studies owing potential metabolic degradation molecule multi labeled approach utilizing adopted synthesis alsterpaullone accomplished separate routes methyl bromoacetate bromoethanol respectively labeled versions combined basis molar radioactivity giving final product radiochemical purity specific activity mci mmol
heterocyclic aromatic amines haas potent bacterial mutagens potential human carcinogens formed heat processed proteins ames test strain useful mutagenicity test system screen food products compounds haas require activation genotoxic forms ames test rat liver preparation normally used order better understand mechanisms mutagen activation respect human metabolism new bacterial strains containing human cytochrome metabolic enzymes recently developed investigated capacity one strains josephy chem res toxicol screening tool mutagens food products expresses human human nadph cytochrome reductase bacterial acetyl coa arylamine acetyltransferase strain sensitive ames system mutagenic effects heterocyclic aromatic amines amino methylimidazo quinoline amino dimethylimidazo quinoline amino dimethylimidazo quinoxaline less sensitive amino methyl phenylimidazo pyridine however mutagenicity arylamine aminofluorene considerably higher ames test system meat extracts total haa content ranging less efficiently detected ames strain rat liver activation less sensitive fewer revertants induced dose range unknown compounds present meat extracts appear inhibit activity enzyme strain therefore demonstrated although useful tool mechanistic studies chemical carcinogenesis screening complex food matrices haas bacterial strain must conducted caution elsevier science rights reserved
background aims next generation sequencing approaches tremendously improved diagnosis rare genetic diseases may however faced difficult clinical interpretation variants inherited enzymatic diseases provide invaluable possibility evaluate function defective enzyme human cell biology case respiratory complex iii structural subunits requires several assembly factors important role complex iii liver function suggested frequent impairment human cases genetic complex iii defects methods report case child complex iii defect acute liver dysfunction lactic acidosis hypoglycemia hyperammonemia mitochondrial activities assessed liver fibroblasts using spectrophotometric assays genetic analysis done exome followed sanger sequencing functional complementation defective fibroblasts performed using lentiviral transduction followed enzymatic analyses expression assays results homozygous truncating mutations lyrm mto two genes encoding essential mitochondrial proteins found functional complementation complex iii defect fibroblasts demonstrated causal role lyrm mutations comparison patient clinical history previously reported patients complex iii defect due nuclear dna mutations actually followed showed striking similarities allowing propose common pathophysiology conclusions profound complex iii defect liver induce actual liver failure impedes liver adaptation prolonged fasting leading severe lactic acidosis hypoglycemia hyperammonemia potentially leading irreversible brain damage lay summary diagnosis rare genetic disease tremendously accelerated development high throughput sequencing technology paper report investigations led identify lyrm mutations causing severe hepatic defect respiratory complex iii based comparison patient phenotype cases complex iii defect propose profound complex iii defect liver induce actual liver failure impedes liver adaptation prolonged fasting european association study liver published elsevier rights reserved
hydrogen sulfide received great attention third gaseous signal transmitter following nitric oxide carbon monoxide particular plays important role regulation cancer cell biology therefore detection endogenous concentrations within biological systems helpful understand role gasotransmitters pathophysiology although simple inexpensive method detection developed direct precise measurement living cells remains challenge study introduced simple facile inexpensive colorimetric system selective detection living cells using silver embedded nafion polyvinylpyrrolidone pvp membrane membrane could easily applied onto polystyrene microplate cover first optimized composition coating membrane pvp nafion mixing ratio agno concentration well nas donor solution reaction time next vitro performance colorimetric detection assay utilizing silver nafion pvp membrane evaluated utilizing known concentration nas standard solution room temperature degrees incubator result sensitivity colorimetric assay incubator abs nas similar room temperature abs nas moreover assays less sensitive interference compounds glutathione cysteine cys dithiothreitol nas assay based silver nafion pvp membrane also showed excellent reproducibility rsd finally successfully measured endogenous concentrations live glioma cells adenosyl methionine stimulation without cys homocysteine utilizing silver nafion pvp membrane summary colorimetric assays using silver nafion pvp coated membranes simple robust reliable tools detection avoid complicated labor intensive analytical approach used conventional biology addition expect assay demonstrate powerful ability study pathophysiological pathways involve elsevier rights reserved
intron inversion found severe hemophilia patients results recombination three intron homologous copies inth study evaluated implication copies formation extended duplications comprising exons factor gene association hemophilia mental retardation two hemophilic patients moderate severe phenotypes third nonhemophilic patient developmental delay studied exhibited duplication gene exons identified multiplex ligation dependent probe amplification along abnormal patterns southern blotting unexpected long range pcr amplification breakpoint analysis using array comparative genomic hybridization performed delimit extent rearrangements duplications bounded one side intragenic inth repeat side extragenic inth inth copies however simultaneous identification second duplication containing gene exons moderate patient classical intron inversion severe patient considered study genetic causal defects hemophilia study shows well known inth copies involved extended duplications comprising gene exons specific duplications probably responsible hemophilia intellectual disability carefully considered genetic counseling continuing investigate causal mutation hemophilia
although developments liquid dispensers made use well plates high throughput screening hts standard still gap dispenser technology performing matrix experiments several components experiments performed assay development enzymological studies therefore still performed manual pipetting lower density plates evaluated new dispenser certus liquid dispenser gyger fluidics gmbh switzerland capable flexible dispensing well format dead volume less taking advantage precision dispenser volumes created concentration gradients plates dispensing different volumes reagent backfilling buffer using method flexibility dispenser software performed several multidimensional experiments varying two three components including assay development hts mode inhibition study cofactor optimization determined values overall flexibility plate layout multiple components accuracy dispense volumes ranging log orders minimal reagent usage enable dispenser complex biochemical experiments
background although discovery research identified importance dozens pro anti inflammatory immune mediators pathogenesis maintenance exacerbation resolution inflammatory diseases human cohort studies incorporated immunological intermediate phenotypes analyses significant hindrances limited panel biomarkers known readily detected healthy human populations stability hence utility biomarkers repeated analysis methods frequency stability plasma biomarkers linked vivo immune regulation allergic autoimmune inflammatory disorders determined healthy pediatric adult participants impact initial multiple subsequent freeze thaw cycles pro inflammatory ccl cxcl tnf alpha anti inflammatory stnf rii acute phase proteins crp ptx biomarkers sst racp subsequently quantified results multiple biomarkers capable providing innate immune signature inflammation readily detected directly vivo healthy individuals biomarker levels unaffected comparing paired data sets freshly obtained never frozen plasma serum matched aliquots despite extensive freeze thaw cycles neither age sex affected stability similarly quantitative differences found following repetitive analysis inflammatory biomarkers culture samples obtained following vitro stimulation tlr rlr ligands conclusions broad panel vivo vivo cytokine chemokine acute phase protein biomarkers linked human chronic inflammatory disorders readily detected vivo remain stable analysis despite multiple freeze thaw cycles data provide foundation confidence large scale analyses panels inflammatory biomarkers provide better understanding immunological mechanisms underlying health versus disease
young birds nest body size may implications aspects development telomere length immune function however possible predict associations either direction one hand may trade offs growth telomere maintenance growth investment immune function suggesting negative correlations hand relatively larger individuals might advantaged competition nest mates allowing garner resources overall leading positive correlations studied development nestling period nests wild european starlings sturnus vulgaris intrabrood competition typically intense larger broods hence predicted body size become increasingly positive predictor telomere length immune functioning brood size increases partial support prediction significant interactions brood size body size predicting erythrocyte telomere length change plasma levels cytokine interleukin associations body size outcomes went negative smallest broods positive largest immune marker high sensitivity reactive protein showed systematic patterning body size brood size results confirm size nestling grows important telomere dynamics development immune system phenotypic associations moderated competitive context
acute septic arthritis condition potential joint destruction physeal damage osteonecrosis warrants urgent identification treatment organism frequently responsible staphylococcus aureus however understanding pathogens continues evolve detection methods continue improve mri improved ability detect concurrent infections useful clinical tool available treatment course involves intravenous antibiotics followed transition oral antibiotics clinically appropriate recommended surgical treatment septic arthritis open arthrotomy decompression joint irrigation debridement treatment concurrent infections
growing prevalence antibiotic resistance calls new approaches development antimicrobial therapeutics likewise improved diagnostic measures essential guiding application targeted therapies preventing evolution therapeutic resistance discovery platforms also needed form new treatment strategies identify novel antimicrobial agents applying engineering principles molecular biology synthetic biologists developed platforms improve upon supplement perhaps supplant traditional broad spectrum antibiotics efforts engineering bacteriophages synthetic probiotics demonstrate targeted antimicrobial approaches fine tuned using synthetic biology derived principles development paper based cell free expression systems holds promise promoting clinical translation molecular biology tools diagnostic purposes review highlight emerging synthetic biology platform technologies geared toward generation new antimicrobial therapies diagnostics discovery channels elsevier rights reserved
targeting bacterial type iii secretion systems tsss critical virulence factors gram negative pathogens regarded alternative strategy development novel anti microbial drugs xanthomonas oryzae oryzae xoo oryzae oryzicola xoc two important bacterial pathogens rice cause leaf blight leaf streak diseases respectively identify potential anti virulence drugs two pathogens screened library plant phenolic compounds derivatives effects xoo tss ten compounds significantly inhibited promoter activity harpin gene hpa inhibitors tested impact hypersensitive response caused xoo non host tobacco plants results showed pretreatment xoo coumaric acid oca resulted significantly attenuated without affecting bacterial growth survival addition cya translocation assays demonstrated translocation two effectors suppressed four inhibitors quantitative reverse transcription polymerase chain reaction qrt pcr analysis showed mrna levels representative genes hrp hypersensitive response pathogenicity cluster well regulatory genes hrpg hrpx reduced treatment four inhibitors suggesting expression xoo tss suppressed expression virulence factors suppressed indicated possible tss specific inhibition finally demonstrated inhibitors reduced disease symptoms xoo xoc rice cultivar oryza sativa varying extents
telomere shortening reported related oxidative stress associated aging process aging associated diseases including alzheimer disease measured methylated non methylated telomere lengths peripheral blood mononuclear cells patients healthy controls southern blotting analysis using methylation sensitive insensitive restriction enzyme isoschizomers mspi hpaii patients bore normal mean telomere lengths unchanged distribution telomere length peripheral leukocytes however subtelomeres shortest telomeres relatively methylated patients genders compared age matched controls observed pathogenesis associated epigenetic condition subtelomere overall telomere length distribution relative elevation subtelomeric methylation short telomeres peripheral blood leukocytes may characteristic implies leukocytes containing short telomeres less methylated subtelomeres tend removed faster peripheral blood patients
one third adult patients orthognathic surgery prognathic retrognathic mandible show relapse sagittal split osteotomy mandible leads displacement parts without changes muscle attachment changed mandible length needs adaptation muscle capacity changed force moment ratio aim microarray study analyze general genetic response masseter muscle patients retrognathism prognathism mandible six months surgery comparison healthy untreated controls found tissue samples masseter muscle reduction different entities patients controls less retrognathic prognathic patients different entities controls prognathia reduced increased retrognathia consider total amount different entities controls higher patients prognathic mandible strong genetic controlled development compared patients retrognathic mandible environmentally influenced concluded function follows form surgical change high inheritance retrognathic patients adaptation could delayed capacity regeneration potential sufficient european association cranio maxillo facial surgery published elsevier ltd rights reserved
ascorbic acid plays important role growth immunity sea cucumber apostichopus japonicus valuable commercial species china south korea japan study investigated dietary ascorbic acid requirements two newly discovered color morphs japonicus white purple compared common green morph six test diets formulated containing ascorbic acid equivalent per ascorbyl polyphosphate color morphs fed test diets days growth energy budget immunological performance recorded dietary ascorbic acid levels significant effect growth japonicus superoxide dismutase sod catalase cat activities total anti oxidative capacity aoc generally higher dietary ascorbic acid levels compared treatments sod cat activities aoc significantly positively correlated sgr indicating supplementary dietary ascorbic acid beneficial effect growth immunity sgr energy intake proportion energy allocated growth decreased significantly white purple morphs ascorbic acid levels reached green morph significant level immune indicators decreased mda content increased slightly indicating high levels dietary ascorbic acid benefit growth immunity sod cat activities higher purple morph green white morphs indicatingits superior immune system capacity optimum growth immunity japonicus achieved similar ascorbic acid white morph green purple morphs
background oxidative stress induce cell injury vascular endothelial cells initial event development atherosclerosis although quantitative real time polymerase chain reaction qrt pcr widely used gene expression studies oxidative stress injuries using carefully validated reference genes received sufficient attention related studies objective study therefore select set stably expressed reference genes use qrt pcr normalization oxidative stress injuries human umbilical vein endothelial cells huvecs induced hydrogen peroxide results using genorm analysis found five stably expressed reference genes sufficient normalization qrt pcr analysis huvecs treated genes stable expression according genorm tfrc rplp gapdh actb according normfinder alas tfrc gapdh actb conclusion taken together study demonstrated expression stability reference genes may differ according statistical program used tfrc rplp gapdh actb optimal set reference genes studies gene expression performed qrt pcr assays huvecs oxidative stress study
introduction gastroesophageal adenocarcinoma goa frequently occurring cancer worldwide poor clinical outcome adenocarcinomas esophagus gastroesophageal junction shown recent increase frequency therefore need increase understanding goa order improve ability detect monitor treat disease areas covered authors discuss current classification goa context recent changes incidence authors also discuss developments understanding disease biology recent discoveries whole genome whole exome sequencing studies immunotherapy finally authors discuss recent developments use circulating tumour dna ctdna pubmed search terms english including esophageal gastric adenocarcinoma gastroesophageal junctional tumour whole genome exome sequencing immunotherapy circulating tumour dna expert commentary shared biological genetic changes goa suggest investigated single disease entity different molecular subtypes number genes recurrently mutated including smad pikca frequent somatic copy number alterations high levels chromosomal instability subset genetic alterations detected ctdna may provide important avenue research detecting minimal residual disease response chemo immunotherapies
introduction biomarkers used monitor use alcohol currently sensitive specific liver enzymes example gamma glutamyl transferase ggt alanine aminotransferase alt aspartate aminotransferase ast alkaline phosphatase alp objective determine animal experiments changes caused alcohol physical activity liver pancreatic enzymes methods twenty four wistar rats randomly assigned experimental groups housed cages controlled environment divided according treatment received initial treatment alcohol administered sedentary alcohol exercised alcohol groups end fourth week program physical training treadmill began control exercised groups blood collection performed cardiac puncture end experiment statistical analysis used analysis variance anova followed tukey test kruskal wallis test results group significantly higher values alt alp compared groups respectively significant differences observed four groups parameters ast ggt amylase conclusion association alcohol consumption physical inactivity increased release enzymes alt alp wistar rats practice aerobic exercise alcohol withdrawal prevented increased release alp plasma animals
cell division fascinating fundamental process sustains life process unicellular organisms reproduce multicellular organisms sustain development growth tissue repair division mother cell gives rise two daughter cells according ordered set events within four successive phases called gap dna ynthesis gap mitosis phase different phases orchestrated ensure physical separation two daughter cells tightly regulated process indeed inappropriate cell division could lead uncontrolled cell proliferation ultimately cancer saccharomyces cerevisiae excellent model system unraveling secrets cell division large community researchers chosen budding yeast model advantages rapid growth simple economical media tractable genetics powerful biochemistry cell biology proteomics approaches furthermore cell cycle mechanisms elucidated yeast conserved higher eukaryotes ability synchronize get large numbers cells particular stage cell cycle crucial properly explore mechanisms cell cycle overview common yeast synchronization techniques compiled chapter
several studies reported previously acute myeloid leukemia aml may express detected pcr northern blotting diagnostic utility expression aml using immunohistochemistry reported previously paraffin embedded tissue sections aml acute lymphoblastic leukemia normal bone marrow specimens immunostained anti terminus antibody aml cases demonstrated nuclear immunopositivity including bone marrow trephines granulocytic sarcomas normal bone marrow specimens negative significant proportion aml expresses nuclear immunostaining finding described previously wilms tumor desmoplastic small round cell tumor finding important correct interpretation immunohistochemical findings diagnosis small round cell tumors childhood especially cases extramedullary deposits aml traditional myeloid markers may negative
describe method synchronization cell cycle bacterium escherichia coli treatment asynchronous cultures amino acid analog serine hydroxamate induces stringent response concomitant arrest dna replication initiation following release stringent response cells initiate dna replication synchrony determined flow cytometry dna content southern blotting microscopy method advantage used fully wild type cells different growth rates may applicable bacterial species replication control stringent response also elaborate methods useful establishing cell cycle parameters bacterial populations describe flow cytometric methods analyzing bacterial populations dna content using dna specific dye picogreen readily detected commercial flow cytometers also present method incorporation nucleotide ethynyl deoxyuridine edu followed click labeling fluorescent dyes allows measure visualize newly replicated dna fixed coli cells non denaturing conditions elsevier inc rights reserved
stress resistance repeatedly enhanced plants transfer single gene using genetic engineering however enhancement resistance abiotic stress still necessary research maize plants transgenic beta encoding choline dehydrogenase escherichia coli tsvp encoding ppase thellungiella halophila produced cross pollination existence transgenes pyramided plants demonstrated pcr southern blotting stable expression transgenes confirmed real time pcr reverse transcription polymerase chain reaction analysis examination drought resistance characteristics demonstrated pyramided transgenic plants higher glycinebetaine contents ppase activity compared parental lines either beta tsvp contained higher relative water content rwc greater solute accumulation lower cell damage drought stress treatment pyramided plants grew vigorously less growth retardation shorter anthesis silking interval higher yields parental lines wild type concluded expression two genes involved different metabolism pathways pyramided transgenic maize helped improve drought resistance parental lines contained either single transgene study suggests expression multiple effective genes transgenic plants could effectively enhance resistance abiotic stress provide feasible approach obtaining maize plants improved drought resistance
newly discovered citrus leprosis virus cytoplasmic type cilv one causal virus citrus leprosis disease complex leads substantial loss citrus production states meta casanare colombia specific sensitive detection methods needed monitor dissemination cilv colombia prevent introduction cilv citrus growing countries toward end putative coat protein gene cpg cilv amplified cilv infected citrus tissues cpg cloned expressed purified recombinant coat protein kda used generate monoclonal antibodies polyclonal antisera four monoclonal antibodies two polyclonal antisera selected specific following western blotting monoclonal antibody mab polyclonal antiserum pab selected testing extract cilv infected leaves using triple antibody sandwich enzyme linked immunosorbent assay tas elisa addition immunocapture pcr standardized using mab specific sensitive detection cilv standardized tas elisa pcr able detect cilv extracts symptomatic citrus leprosis tissues dilutions respectively result demonstrated cilv present citrus orchards meta casanare citrus growing areas colombia tas elisa could used routine detection cilv epidemiological studies border inspections quarantine purposes pcr could valuable cilv validation viral genome analysis elsevier rights reserved
background alpha bisabolol also known levomenol unsaturated sesquiterpene alcohol mainly used pharmaceutical cosmetic products due anti inflammatory skin soothing properties alpha bisabolol currently manufactured mainly steam distillation essential oils extracted brazilian candeia tree threat natural habitat constantly shrinking therefore microbial production alpha bisabolol plays key role development sustainable production renewable feedstock results created escherichia coli strain producing alpha bisabolol high titer developed situ extraction method alpha bisabolol using natural vegetable oils expressed recently identified alpha bisabolol synthase isolated german chamomile matricaria recutita titer converted acetyl coa mevalonate using biosynthetic mevalonate pathway overexpressed farnesyl diphosphate synthase efficiently supply alpha bisabolol precursor farnesyl diphosphate combinatorial expression exogenous mevalonate pathway farnesyl diphosphate synthase enabled dramatic increase alpha bisabolol production shake flask culture bioreactor culture engineered coli harboring alpha bisabolol synthase fed batch fermentation using fermenter conducted optimizing culture conditions resulting efficient alpha bisabolol production titer moreover green downstream extraction process using vegetable oils developed situ extraction alpha bisabolol fermentation showed high yield recovery conclusions engineered coli strains economically viable extraction process developed study serve promising platforms development microbial production alpha bisabolol large scale
amyloid beta beta peptide proteolytic fragment beta precursor protein app aggregates forms neuritic plaques major hallmark alzheimer disease limiting step generating beta peptide app cleavage secretase enzyme bace regulation bace gene likely play important role etiology treatment therefore studied activity flanking region transcription start site bace gene deletion series northern blotting show bace promoter regulatory activity throughout length positive negative activity quantitatively modeled according promoter sequence length specific model depending presence negative regulatory elements portion sequence also examined previously identified proximal fragment bace promoter two constituent subfragments report fragment likely seat neuronal expression bace gene portion fragment accounts observed dna protein interactions brain extracts fragment showed significant reporter gene activity empty vector binds nuclear proteins cell type specific manner contains site shown electrophoretic mobility shift assay overall fragment strong matches within genbank fragment predicted several potential stem loop sites taken together bace gene promoter activity differentially regulated fragment represents novel promoter region cell type specific regulation fragment might useful target regulate bace expression leading beta production understand neuropathogenesis
background expansion gaa trinucleotide repeats molecular basis friedreich ataxia frda precise detection gaa expansion repeat frataxin gene always challenge different molecular methods suggested detection gaa expansion including short pcr long pcr triplet repeat primed pcr pcr southern blotting aim study evaluate two pcr based methods pcr long pcr explore use pcr accompanying long pcr accurate genotyping frda patients methods blood samples collected six iranian patients suspected frda referred department medical genetics tehran university medical sciences year one patients four asymptomatic members family also recruited analysis dna extraction performed two different methods pcr long pcr carried samples type study assessment investigation methods results using combination methods genotypes samples confirmed five homozygous mutants expanded gaa repeats two heterozygous three homozygous normal normal repeat size results obtained pcr consistent long pcr results conclusion presence absence expanded alleles identified correctly pcr performing long pcr fluorescent long pcr enables accurate genotyping samples approach highly reliable could successfully used detection gaa expansion repeats
essential step towards understanding life would identify basic mechanisms responsible discerning behaviour living biochemical systems absent randomly reacting chemical soups one intuitively feels question goes beyond particular nature biological molecules relate general physical principles pre eminent physicist ludwig boltzmann early envisioned life struggle entropy concordance subsequent principle self organization equilibrium examination elementary steady state biochemical systems statistical perspective supports view shows sigmoidal responses arising microstates elimination sufficient explain innermost characteristics life including capacity convert random molecular interactions accurate biological reactions primary operating strategy achieve goal introduction time irreversible transitions molecular state conversion cycles injection free energy confers decisional capacity single macromolecules selected examples various fields molecular biology enzymology gene expression provided show non equilibrium steady state mechanisms remain important contemporary biochemical systems addition information archiving allowed emergence time reversible counterparts mechanisms mediated evolutionary pre organized macromolecular complexes capable generating discernment non dissipative manner elsevier ltd rights reserved
tensile force transmitted tibialis anterior tendon anesthetized adult male wistar rats body mass measured situ within intact biomechanical system hind limb using novel miniature line load cell aim demonstrate dependence loading profile experienced muscle stimulation frequency resistance shortening group control animals data acute experiments shows type loading achievable means implantable electrical stimulators activating agonists agonist antagonist groups muscles programmed resistance training freely moving healthy subjects force responses electrical stimulation common peroneal nerve single pulses short bursts measured unloaded isometric contractions less time consuming approach measure force frequency relationship investigated applying single bursts containing series escalating stimulus frequencies also measured range loading attainable programmed contraction muscle plantar flexor muscles various combinations stimulation frequencies maximal average peak force single twitches higher isometric unloaded twitches average maximal isometric tetanic force per gramme muscle mass agrees well studies standard time saving approaches measure force frequency relationship gave similar results plantar flexor activation produced greatly increased tension tendon similar isometric contractions results suggest unloaded contractions may adequate studies resistance training plantar flexor contractions produced considerably higher force levels may better suited investigate physiology cell biology resistance training rodents
increased enterococcal infections hospitals multidrug resistant vancomycin resistant enterococci vre isolated humans animals food sources raised public health concern presence vre multiple sources performed comparative analysis antimicrobial resistance genetics vre isolates derived fresh produce human fecal samples enterococcus isolates fecal produce isolates resistant vancomycin teicoplanin harbored vana gene vre isolates showed multidrug resistant properties isolates fresh produce study showed common shared characteristics isolates humans results antimicrobial resistance multilocus sequence typing transposon analysis therefore vre isolates fresh produce likely related vre derived humans results suggested vre may contaminate vegetables environment contaminated vegetables could act vehicle human infections ongoing nationwide surveillance antibiotic resistance promotion proper use antibiotics necessary
dietary composition shown influence metabolism impact prevalence risk certain diseases hitherto systematic studies effects dietary modulation human metabolic phenotype metabotype applied nmr spectroscopy combination multivariate statistical analysis characterize effects three diets vegetarian low meat high meat metabotype signature human participants twelve healthy male participants age range years consumed diets randomized order continuous day periods intervening washout period diet days duration participant provided three consecutive hour urine collections days dietary period nmr spectra acquired samples pattern recognition analysis allowed differentiation characteristic metabolic signatures diets creatine carnitine acetylcarnitine trimethylamine oxide tmao elevated high meat consumption period application orthogonal projection latent structure discriminant analysis pls allowed low meat diet vegetarian diet signatures characterized hydroxyphenylacetate microbial mammalian cometabolite higher vegetarian meat diet samples signaling alteration bacterial composition metabolism response diet work shows potential routine use metabonomics nutritional epidemiological studies characterizing predicting metabolic effects influence diet human metabotypes
natural resistance associated macrophage protein nramp encoded slca gene membrane associated transporter divalent metal ions murine slca two known alleles functional slca gly found dba nod ltj related mouse strains non functional slca asp found cbl balb mice mice congenic slca gly slca markedly resistant intracellular pathogens salmonella leishmania mycobacterium tuberculosis examined host cell response replication francisella slca mice bone marrow derived macrophages either slca mice effectively invaded francisella live vaccine strain lvs however hours post infection hpi number lvs bacteria recovered macrophages increased roughly fold slca mice number decreased fold mice challenged intranasally mice lost significant amounts similar weight slca mice lost weight three days infection slca mice failed recover viable francisella lungs livers spleens contrast mice bacterial burdens approaching cfu organ three organs examine degree resistance imparted slca gly expression challenged mice deficient tlr tlr tlr expressing functional slca slca tlr surprisingly slca tlr mice notable weight loss eighty percent slca tlr mice yielded detectable francisella organ tested additionally slca produced little detectable cytokine either lung serum compared mice mice expressing slca gly survived even high doses similar lvs inoculation data taken together serve highlight functional slca gly compensate lack tlr thus slca critical player murine resistance pulmonary francisella infection footpad infection
current interest harnessing combined anticancer immunological effect nano particles nps rna evaluate bioactivity poly pic rna bound anticancer zinc oxide zno melanoma direct rna association unfunctionalized zno shown observing change size zeta potential absorption fluorescence spectra upon complexation rna corona visualized transmission electron microscopy tem first time binding constant determined modified stern volmer absorption biological surface activity index analysis pic zno complex increased cell death human mouse cell lines suppressed tumor cell growth balb mouse melanoma model vivo tumor analysis indicated significant molecular activity changes level phosphoproteins jnk akt inflammation markers ifn gamma high throughput proteomics analysis revealed zinc oxide poly specific combinational patterns suggested possible utility anticancer immunotherapeutic strategy melanoma
large arrays homogeneous microwells defining femtoliter volume versatile platform monitoring substrate turnover many individual enzyme molecules parallel high degree parallelization enables analysis statistically representative enzyme population enclosing individual enzyme molecules microwells require surface immobilization step enables kinetic investigation enzymes free solution review describes various microwell array formats explores applications detection investigation single enzyme molecules development new fabrication techniques sensitive detection methods drives field single molecule enzymology introduce recent progress single enzyme molecule analysis microwell arrays discuss challenges opportunities
dysfibrinogenemia characterized blood coagulation dysfunction induced abnormal molecular structure fibrinogen describe new case year old female suspected dysfibrino genemia routine laboratory screening based decreased functional fibrinogen level normal fibrinogen antigen level prolonged thrombin time extracted dna performed polymerase chain reaction dna sequencing identify genetic mutation fibrin polymerization kinetics fibrinopeptide release scanning electron microscopy mass spectrometric analysis fibrin cross linking sodium dodecyl sulfate polyacrylamide gel electrophoresis western blot conducted dna sequencing identified heterozygous point mutation glyarg alpha chain fibrin polymerization markedly impaired prolonged lag phase decreased final turbidity rate extent fibrinopeptide release patient abnormal reduced mass spectrometry analysis revealed presence mutant fibrinogen chains patient circulation electron micro graphs revealed abnormal fibrin clots fibrin cross linking normal sodium dodecyl sulfate polyacrylamide gel electrophoresis western blot showed difference report new case mutation fibrinopeptide region alpha glyarg results indicated functional abnormalities related delayed defective fibrinopeptide cleavage likely impaired thrombin binding
nanoscale biosensors owing high sensitivity extremely low limits detection enabled realization highly complex sophisticated miniaturized platforms several important healthcare applications predominant one disease diagnosis particular nanomaterial facilitated electrochemical detection dna hybridization exceptional impact fields genetics cancerous mutation detection report ultrasensitive electrochemical platform using electrospun semi conducting manganese iii oxide mno nanofibers dna hybridization detection proposed platform coalesces inherent advantages metal oxide nanofibers electrochemical transduction techniques resulting label free zeptomolar detection dna hybridization proof concept demonstrate zeptomolar detection dengue consensus primer limit detection control well spiked serum samples reported detection limit superior comparison previously reported electrochemical dna hybridization sensors dengue virus detection spanning labeled label free transductions ultra sensitivity believe result synthesizing low bandgap electrospun metal oxide nanomaterial corresponding specific oxidation state manganese methodology extended detection hybridization interest simply adapting appropriate functionalization protocol thus generic nature
research fungal pathogens aim identify virulence determinants strictly relies generation defined recombinant strains task executed means sophisticated molecular biology toolbox recent developments fungal genome engineering opened new frontier implementing crispr cas technology based expression cas endonuclease loaded single guiding rna sgrna molecule target defined site recipient genome novel approach adapted successfully engineer fungal genomes among one human pathogenic mould aspergillus fumigatus implementation required components achieved various means differ respect expression cas enzyme sgrna delivery validation crispr cas mediated mutagenesis could executed targeting selected candidate genes fumigatus provide promising perspective screening multiplexing approaches scrutinize virulome opportunistic fungal pathogen comprehensive manner analyzing genetic polymorphisms function gene families
aimed study anti tumor effects triptolide osteosarcoma related molecular mechanisms cell viability apoptosis portion tumor size tumor weight invasion osteosarcoma cells determined relative level microrna osteosarcoma tissues adjacent tissues determined quantitative real time reverse transcription polymerase chain reaction target gene microrna determined verified luciferase report assay last osteosarcoma cells treated triptolide triptolide microrna mimics verify relationship triptolide microrna triptolide inhibited cell viability promoted apoptosis decreased tumor size weight reduced invasion osteosarcoma cells level microrna osteosarcoma cells decreased significantly treating triptolide relative level microrna osteosarcoma tissues markedly higher adjacent tissues pten reported verified direct target gene microrna overexpression microrna decreased inhibition triptolide osteosarcoma proliferation promotion osteosarcoma apoptosis conclusion triptolide inhibited cell growth invasion osteosarcoma regulating microrna via targeting pten gene vivo vitro
background carbon monoxide regarded gaseous molecular messenger like nitric oxide purpose clarify role heme oxygenase permanent cerebral ischemia protein mrna level methods expression heme oxygenase protein messenger rna investigated different time points following mcao using immunohistochemistry western blotting pcr northern blotting results increased immunoreactivity detected hippocampal cortical neurons hour ischemia also observed astroglial cells hours ischemia found neurons glia cerebral cortex thalamus striatal glia cells western blotting analysis show expression protein cortical neurons reached peak hours occlusion decreased gradually still detected day post occlusion expression messenger rna examined brains rats subjected permanent cerebral ischemia semi quantitative pcr northern blotting mrna transcription could detected hour occlusion hours occlusion expression rose rapidly reaching peak hours post occlusion decreased gradually lasted day occlusion although activity cerebral tissue detected sham operated group operated groups activity operated groups much stronger sham operated group conclusions induction protein may protect cerebral tissues ischemic damage
growing evidence suggests micrornas mirnas play key roles cardiac hypertrophy measure expression endogenous mirnas conducive understanding importance mirnas cardiac hypertrophy however current methods monitor endogenous mirna levels northern blotting quantitative real time polymerase chain reaction qrt pcr microarrays provide real time information mirna biogenesis vivo constructed mirna reporter imaging system monitor mir expression isoproterenol induced cardiac hypertrophy repetitively noninvasively three copies antisense mir xpt mir cloned untranslated region utr gaussia luciferase gluc reporter genes control cytomegalovirus cmv promoter mirna reporter system cmv gluc xpt mir cmv firefly luciferase fluc used positive control imaging mir expression meanwhile quantifications mir cardiomyocyte hypertrophy mouse cardiac hypertrophy induced isoproterenol stimulation measured qrt pcr furthermore used mirna reporter imaging system appraise antihypertrophic effect antagomir vitro vivo bioluminescence signals cmv gluc xpt mir gradually decreased prolongation isoproterenol intervention vitro vivo overexpression mir observed cardiac hypertrophy markedly administration antagomir could reverse upregulation mir prohypertrophic effects furthermore knockdown mir antagomir could markedly reverse repressed gluc activities vitro vivo however fluc activity cmv fluc affected isoproterenol treatment study elucidates feasibility using constructed mirna reporter imaging system monitor location magnitude expression levels mir cardiac hypertrophy vitro vivo
geometric electrostatic modeling essential component computational biophysics molecular biology commonly used geometric representations admit geometric singularities cusps tips self intersecting facets lead computational instabilities molecular modeling present work explores use flexibility rigidity index fri proved superiority protein factor prediction biomolecular geometric representation associated electrostatic analysis fri rigidity surfaces free geometric singularities proposed rigidity based poisson boltzmann equation biomolecular electrostatic analysis approaches surface electrostatic modeling validated set proteins results compared established methods finally smooth analytically differentiable fri rigidity functions offer excellent curvature analysis characterizes concave convex regions protein surfaces polarized curvatures constructed using product minimum curvature electrostatic potential shown predict potential protein ligand binding sites elsevier rights reserved
adding ethidium bromide etbr low concentrations rna samples running formaldehyde agarose gels affords advantages checking rna integrity evaluating quality size separation time electrophoresis immediately either electrophoresis blotted separated rna onto membrane without significantly compromising mobility transfer hybridization study systematically examined factors affect sensitivity rna prestaining heating rna samples include etbr electrophoresis different denaturation conditions also examined efficiency hybridization etbr prestained rna heterologous dna probes results showed fluorescent intensity etbr prestained rna affected etbr concentration previously reported also rna amount denaturation time denaturation temperature prior staining rna etbr significantly decreased efficiency northern blot hybridization heterologous dna probes propose best combine staining sensitivity efficiency northern blot hybridization heterologous dna probes concentration etbr used prestain rna exceed efficiency hybridization etbr prestained rna affected factors affect staining sensitivity also type probe used
pig increasingly used pharmacological toxicological studies species choice future research xenotransplantation extracorporeal liver support hepatocyte based bioartificial liver however relatively little known xenobiotic metabolizing enzymes species present study immunoblotting polyclonal anti rat anti human cytochrome cyp antibodies revealed presence proteins pig liver cross reacted anti human cypa cypd cypa anti rat cype antibodies northern blot analysis demonstrated presence mrna hybridized cdna probes human cypd cype cypa oligonucleotide probe pig cypa lack good animal model cypd presence cypd related protein pig liver particular interest pig hepatocytes also demonstrated cypd immunoreactive protein mrna hybridizable cypd cdna probe investigated ability pig microsomes catalyse dextromethorphan demethylation widely used marker enzyme activity cypd enzyme activity demonstrated biphasic kinetics vith high affinity apparent max nmol min nmol cyp reaction sensitive inhibition cypd selective inhibitors quinidine quinine lobeline fluoxetine whereas chemical inhibitors selective cyp isoforms failed affect reaction conclude dextromethorphan demethylation catalysed cypd enzyme remarkably similar human cypd suggesting potential value pig model predicting human metabolism xenobiotics undergo cypd dependent biotransformation elsevier science ltd rights reserved
introductiondetection recurrent genetic abnormalities great significance refined diagnosis assessment prognosis leukemia conventional nested reverse transcription pcr labor intensive time consuming methodswe developed novel dual color taqman probe based real time pcr method simultaneous screening fusion transcripts parallel reactions method tested validated cell lines carrying known fusion transcripts patient samples resultsa multiplex real time pcr method successfully developed rapid detection fusion genes validated commonly detected fusion genes intra assay reproducibility assessed frequent rearrangements ranged coefficient variation cycle threshold interassay reproducibility ranged five separate experiments lowest detection limit translocations tested ranged validation method patient samples showed specificity excellent consistence conventional nested pcr conclusionoverall believe method easily applicable cost effective clinically useful rapid screening fusion genes initial diagnostic phase leukemia use also extended monitoring minimal residual disease
study evaluates utility dna barcoding mitochondrial cytochrome oxidase subunit coi biodiversity conservation applied tool identifying fish fauna southeastern mediterranean continental coast israel hot spot area biological invasion also eye establish foundation follow studies use environmental dna edna tracks native invasive species application edna concepts methodologies nature conservation established dataset dna barcodes representing marine fish species identified taxonomist belonging native lessepsian migratory species tested within bold system database query sequences showed matches reference dna barcodes bold system excluding two trachurus species three dasyatis pastinaca two rhinobatos rhino batos individuals relatively high intraspecific genetic distances observed two elasmobranchii species suggesting possible cryptic species contrast relatively low interspecific genetic distances found two actinopterygii species gobiidae family members observed scattered bayesian tree fish species taxonomically discordant bold bins family level genus level species level concordant singletons discordancy noted dip lodus fistularia species bold bin analysis apogon queketti champsodon nudivittis cheilodipterus novemstriatus uploaded bold system first time elucidated haplotypes native fish species lessepsian species results allow evaluation invasive species success help developing improved policies conservation mediterranean biodiversity elsevier gmbh rights reserved
targeted development affinity probe adenylation domains facilitate enrichment identification quantification domain containing modules nonribosomal peptide synthetase nrps polyketide synthase pks hybrids nrpss sulfamoyladenosine ams non hydrolyzable analogue adenosine monophosphate amp reported scaffold design inhibitors exhibiting tight binding adenylation enzymes describe application affinity probe domains synthetic probe biotinylated phe ams phe ams biotin specifically targets domains nrps modules activates phe aminoacyladenylate intermediate recombinant nrps enzyme systems whole proteomes elsevier ltd rights reserved
introduction effective malaria vaccine would considered milestone modern medicine yet far eluded research development efforts attributed extreme complexity malaria parasites presenting multi stage life cycle high genome complexity parasite sophisticated immune evasion measures particularly antigenic variation pathogenic blood stage infection however pre erythrocytic early infection forms parasite exhibit relatively invariant proteomes attractive vaccine targets offer multiple points immune system attack areas covered cover current state roadblocks development effective antibody based vaccine including current vaccine candidates limited biological knowledge genetic heterogeneity parasite complexity suboptimal preclinical models well power early stage clinical models expert commentary vaccines need elicit broad durable immunity prevent infection could achievable recent innovations studying parasites infection biology rational vaccine selection design well adjuvant formulation combined synergistic multipronged approach improved preclinical assays well iterative testing vaccine candidates controlled human malaria infection trials accelerate effort
aim explore microrna mirna expression renal clear cell carcinoma rccc methods compared mirna expression profiles pairs rccc adjacent nontumorous tissue rccc patients using mammalian mirna microarray containing whole human mature precursor mirna sequences verify microarray results northern blotting carried randomly selected mirnas results totally mirnas identified valid expression rccc samples specifically detected rccc samples detected downregulated rccc compared sample upregulated without significant difference mirnas rccc tissues exhibit overall higher expression level tissue chip results confirmed northern blot analysis conclusion study may help clarify molecular mechanisms involved pathogenesis rccc mirnas potentially serve novel diagnostic biomarker rccc crown copyright published elsevier ltd rights reserved
within nematode genus caenorhabditis caenorhabditis briggsae nigoni among closely related species known differ sexual mode nigoni retaining ancestral male female outcrossing system briggsae recently evolved self fertility biased sex ratio wild type briggsae nigoni produce fertile hybrid female progeny progeny either inviable briggsae mother viable sterile nigoni mother recent study provided evidence suggesting loss cbr meiotic regulator briggsae hermaphrodites allowed produce viable fertile hybrid male progeny mated nigoni males would useful variety genetic experiments sought verify result preliminary crosses wild type briggsae hermaphrodites occasionally produced fertile males could confirmed interspecies hybrids using rna interference rnai protocol eliminates possibility self progeny cbr hermaphrodites found sterile males bearing nigoni chromosome fertile males bearing briggsae wild type crosses results suggest apparent rescue hybrid viability fertility due incomplete purging self sperm prior mating
circulating glucocorticoid levels controlled hypothalamo pituitary adrenal hpa axis within tissues availability controlled isoforms beta beta hydroxysteroid dehydrogenase beta beta hsd interconvert inactive cortisone active cortisol two isoforms identified key metabolic target tissues including liver adipose expression beta beta hsd predominates vivo converts cortisone cortisol thus amplifies local action contrast mineralocorticoid target tissues beta beta hsd isoform abundantly expressed inactivates cortisol cortisone offers protection mineralocorticoid receptor form occupation activation cortisol dysregulated beta beta hsd activity implicated many metabolic diseases obesity diabetes inhibition beta beta hsd represents promising therapeutic target mutations within gene encoding beta beta hsd cause syndrome apparent mineralocorticoid excess decreases activity linked hypertension well impairment placental function neonatal growth discuss molecular biology enzymology beta beta hsd role normal physiology discuss altered beta beta hsd activity pathological states potential therapeutic targeting
high resolution nuclear magnetic resonance nmr spectroscopy powerful tool structural identification xenobiotic metabolites ill complex biological matrices plasma urine bile however fluids dominated thousands signals resulting endogenous metabolites advantageous investigating drug metabolites matrices simplify spectra including separation step experiment directly coupling hplc nmr naproxen methoxy alpha methyl naphthyl acetic acid administered enantiomer metabolised vivo form demethylated metabolite subsequently conjugated beta glucuronic acid well sulfate naproxen also metabolised phase metabolism directly form glycine conjugate well glucuronic acid conjugate carboxyl group present investigation metabolism naproxen investigated urine samples simple sample preparation using combination directly coupled hplc nmr spectroscopy hplc mass spectrometry buffer system developed allows chromatographic method used hplc nmr well hplc analysis combination methods complementary information content since nmr spectra provide evidence distinguish isomers type glucuronides formed hplc data allow identification molecules containing nmr silent fragments occur sulfate ester elsevier science rights reserved
system analysis metabolic network reconstructions used calculate functional states phenotypes provides tools study metabolic effects genetic epigenetic properties dosage sensitivity used genome scale reconstruction human metabolism recon analyze effect nine known predicted imprinted genes metabolic phenotypes simulations maternal deletion atpa indicated anabolic metabolism consistent known clinical phenotypes obesity abnormal expression genes affected fewer subsections metabolism consistent lack established clinical phenotypes found four nine genes metabolic effect predicted haig parental conflict theory
mutant enzymes arge encoded acetyl ornithine deacetylase arge escherichia coli prepared however enzyme found soluble kinetic analysis loaded exhibited activity levels fold less loaded arge electronic absorption spectra loaded arge indicate bound ion resides distorted five coordinate environment isothermal titration calorimetry itc data binding enzyme provided dissociation constant three dimensional homology model arge generated using ray crystal structure dape encoded succinyl diaminopimelic acid desuccinylase dape haemophilus influenzae confirming assignment well active site ligands
systems cell biology understanding development requires characterization molecules produced biological system decades research new generation sequencing provided functional information key genes transcripts however less information available differential gene expression translates domains functionally important proteins peptides metabolites changes molecules impact development mass spectrometry current technology choice detection quantification large numbers proteins metabolites requires use antibodies functional probes priori knowledge molecules produced system review focuses recent technologies improved sensitivity proteins metabolites enabled new functionalities assess temporal spatial changes vertebrate embryonic development review highlights case studies new generation tools enabled study hundreds thousands proteins metabolites tissues cell populations single cells model systems vertebrate development particularly frog xenopus zebrafish mouse new generation expands toolbox cell developmental studies raising exciting potentials advance basic translational research life sciences
determine effect oxytetracycline anaerobic biological treatment livestock wastewater studied removal efficiency chemical oxygen demand determined kcro codcr methane production bacterial diversity stress different concentrations oxytetracycline results indicated removal cod yield methane inhibited oxytetracycline increase oxytetracycline concentration methane production decreased control group cod removal efficiency fell control group results pcrdgge polymerase chain reaction denaturing gradient gel electrophoresis indicated increase oxytetracycline concentration richness values bacterial community fell control group addition oxytetracycline reduced cod removal efficiency methane production bacterial diversity livestock wastewater results presented study provide important information bacterial diversity livestock wastewater treated using oxytetracycline
due widespread use limited human metabolism beta blockers widely detected sewage effluents surface waters beta blockers persistent agricultural soils irrigated treated wastewater fertilized sewage sludge important study beta blockers interaction kaolinite talc kaolinite major component soil formed warm humid conditions talc frequently used excipient drug formulation study interactions metoprolol beta blocker kaolinite talc clay minerals structural types investigated varying physical chemical conditions uptake minerals instantaneous capacities close cation exchange capacity substrates sorption exothermic free energy sorption small negative parameters pointed physical sorption uptake minerals solution ionic strength significant effects uptake kaolinite minimal influence talc contrasting different mechanisms uptake minerals ftir results showed bands blue shifted plane plane bending meanwhile blue shift also found bands attributed aromatic ether sorption kaolinite talc talc blue shift band attributed aliphatic ether also observed results suggested electrostatic interactions hydrogen bonding played important roles uptake kaolinite contrast hydrogen bonding hydrophobic interaction likely main mechanisms uptake talc elsevier rights reserved
background pirfenidone novel anti fibrotic anti inflammatory agent inhibits progression fibrosis animal models patients idiopathic pulmonary fibrosis ipf previously showed pirfenidone inhibits expression collagen type heat shock protein hsp collagen specific molecular chaperone human lung fibroblasts stimulated transforming growth factor tgf beta vitro increased numbers hsp positive type pneumocytes well fibroblasts also diminished pirfenidone animal model pulmonary fibrosis induced bleomycin present study evaluates effects pirfenidone collagen type hsp expression human alveolar epithelial cell line cells vitro methods expression collagen type hsp cadherin mrnas cells stimulated tgf beta evaluated northern blotting real time pcr expression collagen type hsp fibronectin proteins assessed immunocytochemical staining results tgf beta stimulated collagen type hsp mrna protein expression cells pirfenidone significantly inhibited process pirfenidone also inhibited expression fibroblast phenotypic marker fibronectin cells induced tgf beta conclusion concluded anti fibrotic effects pirfenidone might mediated direct inhibition collagen type expression also inhibition hsp expression alveolar epithelial cells results reduced collagen synthesis lung fibrosis furthermore pirfenidone might partially inhibit epithelial mesenchymal transition
mechanistic studies catalysis inhibition serine cysteine proteases afford new sometimes surprising insights challenging conventional dogmas enzymology intrinsic source difference catalytic mechanisms serine cysteine hydrolases origin stability enzyme inhibitor complex serine proteases structures mechanisms catalysis inhibition cysteine proteases intellectually interesting findings provide mechanistic basis understand trend binding affinity warheads reversible covalent reaction coordinate analogue rca inhibitors theoretically derived covalent descriptors differentiate serine cysteine hydrolases account energetic contribution new covalent bond enzyme inhibitor complex descriptors heart enzyme mechanism based method embm new computer assisted drug design tool filtration inhibitor warheads activity embm unique accounts covalent noncovalent interactions rca inhibitors target enzymes
dna methylation specifically dna methyltransferase enzyme dnmta involved pathogenesis variety hematological diseases regulating function immune cells although altered dna methylation patterns mutations dnmta correlate mast cell proliferative disorders humans role dna methylation mast cell biology understood using mast cells lacking dnmta found enzyme involved restraining mast cell responses acute chronic stimuli vitro vivo exacerbated mast cell responses observed absence dnmta recapitulated enhanced treatment demethylating agent aza deoxycytidine well modulation dnmt expression supporting role dna methylation regulating mast cell activation mechanistically effects part mediated dysregulated expression scaffold protein iqgap characterized ability regulate wide variety biological processes altogether data demonstrate dnmta dna methylation key modulators mast cell responsiveness acute chronic stimulation
alveolar bone resorption caused trauma periodontal diseases represented challenge dental clinicians researchers study evaluate osteogenic potential human gingival fibroblasts hgfs direct transdifferentiation hgfs functional osteoblasts via epigenetic modification osteogenic signaling bone morphogenetic protein bmp vitro vivo hgf treatment aza deoxycytidine aza induced demethylation hypermethylated cpg islands osteogenic lineage marker genes runx alp subsequent bmp treatment successfully drove fibroblasts osteoblasts lineage cell morphological changes viewed microscopy alkaline phosphatase alp alizarin red ars staining confirmed osteoblastic change mediated epigenetic modification real time polymerase chain reaction pcr methylation specific pcr msp chromatin immunoprecipitation chip assay demonstrated altered methylation patterns runx alp promoter regions effect gene expression furthermore micro computed tomography analysis vivo mouse cell transplantation experiments showed high density signal epigenetically modified hgf group addition significant amount bone formation observed transplanted material using hematoxylin eosin staining well collectively results indicate epigenetic modification permits direct programming hgfs functional osteoblasts suggesting approach might open novel therapeutic avenue alveolar bone regeneration
zinc vital nutrient human health biological functions human body rely zinc even though zinc incredibly important physiology pathology current understanding zinc relates tumor cell biology leaves much desired natural nonpatentable inexpensive agents zinc remains subject explorative research scientific interest rather promoted practical use date studies keywords zinc cancer indexed web knowledge portal although numbers papers increased fold last decade vast research data generated single recommendation incorporation zinc use cancer prevention treatment review intend analyze current available research data epidemiological clinical evidence role zinc human cancer prevention treatment focus cancers prostate breast pancreatic basic epidemiological studies zinc carried pancreas prostate mammary glands secretory tissues unusual zinc requirements tightly regulate zinc metabolism integration zinc import sequestration export mechanisms suggests zinc could play important role physiology pathology organs objective review stimulate interest research field focusing role zinc possible preventive therapeutic agent accelerated application inexpensive easily accessible nutrient clinical oncology copyright wolters kluwer health inc rights reserved
background multiple etiologies responsible infectious gastroenteritis causing acute diarrhea often diagnosed also acute diarrhea one major causes morbidity mortality among children less years age methods study fecal samples collected children years presenting symptoms acute diarrhea samples screened viral bacterial parasitic etiologies rotavirus adenovirus screened immunochromatographic tests diarrheagenic escherichia coli epec ehec stec eaec shigella spp salmonella spp vibrio cholera cryptosporidium spp giardia spp detected gene specific polymerase chain reaction results escherichia coli detected major etiological agent followed rotavirus shigella adenovirus cryptosporidium giardia concurrent infections two pathogens observed cases predominant incidence particularly year old children compared children years age group overall result showed significantly higher detection rates among children diarrhea combinations two well three infections concurrently respectively conclusion suspecting possible multiple infectious etiologies diagnosis right causative agent aid better pharmacological management acute childhood diarrhea hypothesized cases concurrent infections etiological agents might complementing strategies pathogenesis resulting severe diarrhea could studied better experimental infections
total extended spectrum beta lactamase esbl producing escherichia coli isolates collected humans healthy broiler chickens included study mic values alkyl diaminoethyl glycin hydrochloride benzethonium chloride benzalkonium chloride chlorhexidine acriflavine copper sulfate silver nitrate zinc chloride determined broth microdilution method significant differences mic distributions found human avian isolates ctx shv tem type esbl coli chlorhexidine silver nitrate zinc chloride copper sulfate statistical analysis isolates reduced susceptibility investigated presence localization tolerance mediating genes pcr analysis southern blotting genes emre mdfa suge cueo copa znta zitb commonly present isolates elevated mics genes qace delta qacf qach suge cusc pcoa less prevalent several isolates plasmid localization genes qace delta qacf qach suge large plasmids detected elsevier inc rights reserved
beta keratins constitute hard epidermis adhesive setae gecko lizards nucleotide amino acid sequences beta keratins epidermis gecko lizards cloned mrnas specific oligonucleotides used amplify rapid amplification cdna ends analyses five specific gecko beta keratin cdna sequences cdna coding sequences encoded putative glycine proline serine rich proteins kda containing amino acids especially glycine proline serine glycine rich repeats localized toward initial end regions protein central region rich proline strand conformation beta pleated fold likely responsible formation beta keratin filaments shows high homology core region lizard keratins avian scale feather keratins northern blotting reverse transcriptase polymerase chain reaction rtpcr analysis show higher beta keratin gene expression regenerating epidermis compared normal epidermis situ hybridization confirms mrnas proteins expressed cells differentiating oberhautchen cells beta cells expression adhesive setae climbing lamellae shown pcr southern blotting analysis revealed proteins encoded multigene family pcr analysis showed genes presumably located tandem along dna transcribed dna strand like avian beta keratins
dunaliella bardawil unicellular microalga grows relatively high concentrations salt far refractory agrobacterium mediated transformation inverse relationship salt concentration hygromycin resistance observed cultivation nacl allowed growth bardawil tumefaciens lowering salt concentrations also enabled use lower concentrations hygromycin selection agent cells resistant hygromycin selected growth agrobacterium completely eliminated cells using cefotaxime potassium clavulanate concentration sodium chloride gradually increased simultaneous reduction hygromycin concentration better growth bardawil agrobacterium unable survive growth medium used dunaliella expression glucuronidase uida green fluorescent protein gfp hygromycin phosphotransferase hpt hygromycin resistant culture detected using gluc substrate western blotting using gfp antibodies pcr respectively cells growing nacl absence hygromycin retained ability grow hygromycin even months cultivation cells expressed gfp pcr hpt gene positive stability integrated transgene resistance hygromycin three different transformation events ascertained periodically southern blotting dna extracted hygromycin resistant cells hrc months old established presence integrated transgene dna bardawil results present study substantiate tumefaciens mediated transformation unicellular marine alga bardawil agrobacterium tumefaciens mediated transgene integration along massive outdoor cultivation methods used bardawil may allow commercial synthesis secondary metabolites heterologous proteins
pseudomonas aeruginosa expresses secreted lipoxygenase lox oxygenates free arachidonic acid predominantly ete enzyme capable binding phospholipids active site physically interacts model membranes however membrane oxygenase activity quantified address question overexpressed lox intracellular tag fusion protein escherichia coli purified electrophoretic homogeneity compared biomembrane oxygenase activity rabbit alox found enzymes capable oxygenating mitochondrial membranes specific oxygenation products ode ete esterified phosphatidylcholine phosphatidylethanolamine identified major oxygenation products normalized similar linoleic acid oxygenase activity rabbit enzyme exhibited much effective mitochondrial membrane oxygenase activity contrast long term incubations red blood cells lox induced significant hemolysis whereas rabbit alox less ineffective data indicate principle capability lox oxygenating membrane bound phospholipids likely alter barrier function biomembranes although membrane oxygenase activity lower fatty acid oxygenase activity lox red blood cell membrane oxygenation might biological relevance aeruginosa septicemia elsevier inc rights reserved
target recognition sequence classical complement pathway major link connects innate acquired immunity study cqdc homolog hccqdc triangle shell pearl mussel hyriopsis cumingii identified complete nucleotide sequence hccqdc cdna consists untranslated terminal region utr utr poly tail open reading frame orf encodes polypeptide amino acids hccqdc contains signal peptide three typical domains hccqdc gene expressed tested tissues highest expression mantle staphylococcus aureus vibrio parahaemolyticus infection increased mrna transcript levels hccqdc hepatopancreas mantle recombinant hccqdc protein could bind gram negative gram positive bacteria well different pamps lps pgn rnai results showed hccqdc involved parahaemolyticus induced hctnf hcwap expression combined results demonstrated hccqdc participates innate immunity cumingii elsevier ltd rights reserved
analytical methods used pharmaceuticals drugs abuse sewage play fundamental role wastewater based epidemiology wbe studies quantitative analysis drug metabolites raw wastewaters used determine consumption general population great advantage public health studies gives objective real time data community use chemicals highlighting relationship environmental human health within wbe study salbutamol use large population developed procedure distinguish human metabolic excretion external source contamination possibly industrial wastewaters salbutamol mainly excreted sulphate metabolite rapidly hydrolyzed parent compound environment currently detected molecule either excreted metabolized metabolites unstable environment studies completed monitoring parent compound case mandatory assess whether drug wastewater present population use specific source contamination industrial manufacturing waste commercial salbutamol mainly occurs racemic mixture stereoselective human metabolism enantiomeric relative fraction efrel wastewater samples reflect excretion unbalanced towards one two enantiomers drug metabolic origin procedure described involves chiral analysis salbutamol enantiomers liquid chromatography tandem mass spectrometry calculation efrel detect samples external contamination occurs samples collected daily october december milano nosedo wastewater treatment plant carbamazepine atenolol measured sewage collector control drugs salbutamol efrel highly consistent samples three month period limited number samples unexpectedly high concentrations efrel close observed metabolized commercially available drug supporting idea external source contamination besides human metabolic excretion results showed present non metabolic daily loads could evaluated indicating average day salbutamol extra load due non metabolic sources stereoselectivity metabolism enantiomeric ratio analysis appears useful approach wbe studies identify different sources drugs environment metabolic products present useful analytical levels elsevier rights reserved
tuberculosis one common infectious diseases china delayed patient finding obstructed disease control especially smear negative patients current study undertaken evaluate diagnostic accuracy genexpert mtb rif compared conventional methods detection pulmonary tuberculosis patients total spot sputum samples confirmed pulmonary tuberculosis patients evaluated september june sample examined acid fast bacillus smear microscopy culture genexpert mtb rif sputum culture onlowenstein jensen considered gold standard testing smear negative positive thegold standard culture detected positive specimens positivity genexpert mtb rif compared culture combined sensitivity specificity positive predictive value ppv negative predictive value npv genexpert mtb rif respectively smear negative specimens sensitivity specificity ppv npv genexpert mtb rif smear positive specimens corresponding accuracy values findings study indicated genexpert mtb rif assay demonstrated high sensitivity detecting mycobacterium tuberculosis compared smear method high npv among smear negative patients elsevier ltd rights reserved
proteolytic enzymes key signaling molecules normal physiological processes various diseases synthesis protease activity tightly controlled consequently levels protease messenger rna protein often good indicators total protease activity accurately assign function new proteases investigators require methods used detect quantify proteolysis review describe basic principles recent advances applications biochemical methods track protease activity emphasis use activity based probes abps detect protease activity describe abp design principles use case studies illustrate application abps protease enzymology discovery development protease targeted drugs detection validation proteases biomarkers
following strategy similar used baker yeast herrgard nat biotechnol aconsensus yeast metabolic network obtained community approach systems biology herrgard dobson bmc syst biol developments towards genome scale metabolic model yeast dobson heavner bmc syst biol yeast expanded reconstruction saccharomyces cerevisiae metabolic network heavner salmonella typhimurium thiele bmc syst biol community effort towards knowledge base mathematical model human pathogen salmonella typhimurium thiele recent paper thiele nat biotechnol community driven global reconstruction human metabolism thiele described much improved community consensus reconstruction human metabolic network called recon authors include present ones made freely available via database http humanmetabolism org sbml format biomodels http identifiers org biomodels model short analysis summarises main findings suggests approaches able exploit availability model advantage
mutation mevalonate kinase mvk thought account cases hyperimmunoglobulinemia syndrome hids recurrent fever however mechanism relationship elevated serum immunoglobulin igd clinical features hids unclear study generated fusion pcr vector express high levels chimeric secretory igd csigd specifically liver generated seven founder lines transgenic mice microinjection verified using genomic pcr southern blotting detected expression csigd reverse transcription pcr quantitative pcr western blotting enzyme linked immunosorbent assays demonstrated csigd could specifically stably expressed liver used flow cytometry show overexpression csigd bone marrow spleen cells effect cell development morphologic anatomical observation transgenic mice revealed skin damage hepatosplenomegaly nephromegaly transgenic mice mice pathological sections showed high levels cell necrosis protein like sediments liver spleen kidney demonstrated genomic insertion sites transgenes disrupt mvk gene mouse chromosome transgenic mouse useful explore pathogenesis hids
individual cells multicellular organisms constantly explore microenvironment niche obtain spatial information used regulate cell behavior maintain tissue integrity extracellular matrix ecm important source spatial information binding integrin family receptors ecm triggers formation integrin adhesion complexes iacs link ecm network cellular cytoskeleton via remarkably large multiprotein complexes collectively referred integrin adhesome recent advances proteomics enabled researchers study iac composition detail various biochemical iac isolation methods culture conditions employed study composition dynamics integrin mediated adhesions mainly fibroblasts lymphoblasts studies led identification daunting lists potential iac components review focuses current status proteomics driven research seeking understand integrin functions comprehensive analysis iac components systems level approaches revealed complexity biochemical biomechanical signals processed iacs provide novel insight signals conveyed regulate cellular behavior
micrornas mirnas small noncoding regulatory rnas reduce stability translation fully partially sequence complementary target mrnas recent evidence indicates mirnas function tumor suppressors oncogenes demonstrated glioblastoma multiforme mir upregulated whereas mir downregulated expression mir studied using real time quantitative reverse transcriptase polymerase chain reaction northern blotting human astrocytic tumors different grade malignancy mir overexpressed glioma samples whereas mirna downregulated compared normal brain tissue mirna hyperexpressed tumor samples whereas higher levels mirna found high grade gliomas study first analysis mirnas astrocytic tumor different stages malignancy different expression pattern observed tumors different stages malignancy probably dependent cell specific repertoire target genes tumors sharing different molecular pathways activity suggests mirnas may also place diagnosis staging brain tumors
purpose evidence suggests mitochondrial dna mtdna copy number increases response dna damage increased mtdna copy number observed prostate cancer pca cells suggesting role pca development association yet investigated prospectively methods conducted nested case control study cases controls men randomized screening arm prostate lung colorectal ovarian cancer screening trial plco evaluate association pre diagnosis mtdna copy number measured peripheral blood leukocytes risk pca used logistic regression estimate odds ratios confidence intervals polytomous logistic regression analyze differences associations non aggressive stage gleason grade pca results although mtdna copy number significantly associated pca risk overall increasing mtdna copy number associated increased risk non aggressive pca compared controls association observed aggressive pca higher mtdna copy number also associated increased psa levels among controls conclusions results suggest alterations mtdna copy number may reflect disruption normal prostate glandular architecture seen early stage disease opposed reflecting large number tumor cells seen advanced pca
ponatinib novel tyrosine kinase inhibitor tki specifically designed inhibit native mutated bcr abl united states ponatinib received accelerated approval adults positive chronic myeloid leukemia cml gatekeeper mutation positive philadelphia chromosome positive acute lymphoblastic leukemia patients cml tki therapy indicated objective phase mass balance study evaluate absorption metabolism excretion ponatinib healthy subjects single ponatinib dose administered orally six healthy male volunteers absorption metabolism excretion assessed dose recovered feces urine respectively days postdose median time maximal plasma radioactivity mean terminal elimination half life radioactivity ponatinib inactive carboxylic acid metabolite two major circulating radioactive components accounted radioactivity pooled plasma elimination half lives respectively major metabolites urine glucuronides together derived metabolites represented dose ponatinib detected urine feces major radioactive components ponatinib hydroxylation demethylation four methylated products accounting radioactive dose respectively ponatinib readily absorbed humans metabolized multiple pathways eliminated mostly feces
background wound healing often impaired diabetic animals humans matrix metalloproteases act proinflammatory agents physiological wound healing pathways stimulating cytokines including interleukins ila ilb tumor necrosis factor transforming growth factor beta botanicals traditionally used assist healing different types wounds produce fewer side effects specific aim develop plant based recipe supporting effective wound healing diabetic animals methods plant materials adiantum capillus veneris commiphora molmol aloe vera henna collected study oven dried degrees dried leaves resins crumbled powder mixed equal parts vaseline preservative mixture used ointment wounds induced diabetic non diabetic rats divided subgroups receiving agent control treatments necrotic tissue surrounding wound periodically removed wound healing rna extracted healing region wound days cdna synthesis monitor changes tgfb mmp mmp tnf alpha expression using real time pcr results expression mmp tnf alpha tgfb genes wound tissue significantly different mmp gene expression diabetic non diabetic rats treated vaseline days expression mmp gene decreased significantly diabetic rats days comparison non diabetic rats herbal mixture added vaseline conclusions study presents herbal treatment alters gene expression signature wounds induced rat model type diabetes manner consistent accelerated healing demonstrates herbal treatment might effective treat wounds diabetic patients
tuberculosis disease caused mycobacterium tuberculosis mycobacterium bovis still remains one world biggest global health burdens recently engineered polyhydroxyalkanoate pha biobeads produced escherichia coli lactococcus lactis displayed mycobacterial antigens found induce significant cell mediated immune responses mice observed pha beads contained host cell proteins impurities hypothesized potential induce immunity study aimed develop pha beads produced mycobacteria mycobacterial pha biobeads mbb test potential vaccine mouse model model organism nonpathogenic mycobacterium smegmatis engineered produce mbb mbb immobilized mycobacterial antigens aga esat surface embb three key enzymes involved poly hydroxybutyric acid pathway namely beta ketothiolase phaa acetoacetyl coenzyme reductase phab pha synthase phac engineered coli mycobacterium shuttle plasmids expressed trans immobilization specific antigens surface mbb achieved creating fusion pha synthase remains covalently attached polyester core resulting pha biobeads displaying covalently immobilized antigens mbb mbb smegmatis vector control mvc used mouse immunology trial comparison phosphate buffered saline pbs vaccinated mycobacterium bovis bcg vaccinated groups successfully produced mbb mbb used vaccines induce cellular immune response mycobacterial antigens importance tuberculosis disease caused mycobacterium tuberculosis mycobacterium bovis still remains one world biggest global health burdens study produced polyhydroxyalkanoate pha biobeads mycobacteria used vaccines induce cellular immune response mycobacterial antigens
several independent groups reported targeted genomic editing mammalian cells mediated synthetic oligonucleotides nevertheless validity data disputed experimental artefacts inconsistent findings low reproducibility describe experiments designed meet stringent criteria completely eliminate artefactual results particular targeting cells expressing mutated enhanced green fluorescence protein egfp allow editing measurements protein level analyzing corrected clones southern blotting rigorously excluded spontaneous reversion contamination artefacts false positives overestimation findings provide unequivocal authentication oligonucleotide mediated gene editing real artefactual phenomenon vital starting point develop technology practical applications gene therapy doi published online april
aberrant expression microrna mir contributes regulation normal cancer cell biology associated human malignancies however operate contradictory manner role mir osteosarcoma remains fully elucidated aim present study investigate effects mir osteosarcoma progression tumor cell proliferation examine molecular mechanism underlying osteosarcoma level mir determined using reverse transcription quantitative polymerase chain reaction qpcr analysis osteosarcoma matched paracancerous tissues human osteosarcoma cancer cell lines roles mir cell proliferation survival cell cycle analyzed using mir lentivirus mir infected osteosarcoma cells addition downstream target proteins wnt beta catenin signaling pathway evaluated using western blot analysis mir infected cells mir infected cells also treated exogenous beta catenin respectively following expression beta catenin measured using western blot analysis survival determined using cimethylthiazol diphenyl tetrazolium bromide mtt assay results qpcr analysis showed expression level mir significantly higher osteosarcoma tissues compared matched paracancerous tissues observed osteosarcoma cell lines saos uos cells infected hsa mir lentivirus levels mir significantly upregulated human osteosarcoma cancer cells overexpression mir saos cells promoted cell growth treatment cells specific antisense microrna oligonucleotides amos mir indicated durations reversed effects mir additionally amo treated cells showed phase arrest suggesting mir contributed regulation cell cycle addition results western blot analysis showed mir lentivirus infected cells levels cyclin myc lymphoid enhancer binding factor significantly increased compared control lentivirus infected cancer cells note infection mir lentivirus affect levels wnt wnt wnt axin glycogen synthase kinase beta uos cells whereas expression levels beta catenin cells saos cells significantly increased addition exogenous beta catenin effectively reversed efficiency mir specific amos detected using mtt assay data suggested critical role mir human osteosarcoma via regulation wnt beta catenin signaling pathway demonstrated mir oncogene human osteosarcoma
objectives hypothesisthe human papillomavirus hpv known infect tissues oropharynx demonstrated hpv positive oropharyngeal squamous cell carcinoma opscc hpv also shown induce benign lymphoid hypertrophy sought investigate association obstructive sleep apnea osa presence hpv palatine lingual tonsillar oropharyngeal tissue study designcase series chart review methodsthis retrospective laboratory based study oropharyngeal tissue patients osa included patients years old underwent surgical treatment osa single institution january may surgical specimens adequate size analyzed hpv using real time quantitative polymerase chain reaction dna extracted formalin fixed paraffin embedded tissue blocks student test pearson test linear logistic regression used assess comparisons body mass index bmi apnea hypopnea index ahi age gender hpv positive hpv negative groups resultsof cases included study six positive hpv two hpv four hpv bmi ahi age gender showed significant differences hpv positive hpv negative groups logistic regression predict hpv positivity accounting variable multivariate analysis statistically significant conclusionsour study show hpv statistically significant association osa none covariates analyzed bmi ahi gender age predicted hpv positivity surgically resected oropharyngeal tissue osa patients level evidence laryngoscope
carotenoids plant secondary metabolites comprise two main groups carotenes xanthophylls latter group includes zeaxanthin synthesized beta carotene hydroxylase catalyzing hydroxylation beta rings beta carotene molecules develop tools alter carotenoid biosynthesis plants isolated cdna clone encoding candidate beta carotene hydroxylase crth flower petals adonis aestivalis crth protein homology beta carotene hydroxylases organisms possesses four histidine motifs conserved family enzymes sequence analysis predicted presence putative plastid transit peptide amino terminus four transmembrane helical regions southern blot analysis showed crth encoded multicopy gene family least three members aestivalis analysis crth transcript abundance northern blotting indicates highly expressed flower petals roots stems relatively low expression leaves developing seeds crth able catalyze formation zeaxanthin intermediate precursor beta cryptoxanthin beta carotene functional assays conducted coli expression crth arabidopsis thaliana wild type mutant deficient endogenous beta carotene hydroxylases enhanced biosynthesis violaxanthin seeds
evolutionary timescales sea level oscillations lead recurrent spatio temporal variation species distribution population connectivity situation applying classical concepts biogeography challenging yet necessary understand mechanisms underlying biodiversity highly diverse marine ecosystems coral reefs aimed studying outcomes complex biogeographic dynamics reproductive isolation sampling populations across wide spatial range species rich fish genus sergeants pomacentridae abudefduf generated mutlilocus data set included ten morpho species indo west pacific localities observed pattern mito nuclear discordance two common widely distributed species abudefduf sexfasciatus abudefduf vaigiensis results showed three regional sublineages indian ocean coral triangle region western pacific sexfasciatus divergence cytb species vaigiensis polyphyletic consists three distinct genetic lineages divergence cytb whose geographic ranges overlap although vaigiensis sexfasciatus found distinct based nuclear information vaigiensis found nested within sexfasciatus mitochondrial gene tree sexfasciatus coral triangle region vaigiensis differentiated mitochondrial locus used coalescent based simulation characterize spatially widespread weak gene flow two species showed fishes good candidates investigate evolutionary complexity discrepancies phenotypic genetic similarity closely related species
experienced autopsy case cause death judged poisoning multiple new psychoactive substances including chminaca fluoro amb diphenidine forensic toxicol although unchanged chminaca could detected solid tissues could neither detected blood urine specimens article obtained eight kinds reference standards chminaca metabolites commercial source chminaca metabolites urine specimen abuser extracted modified quechers method analyzed liquid chromatography tandem mass spectrometry hydrolysis beta glucuronidase among eight chminaca metabolites tested metabolites could identified urine specimen deceased hydrolysis beta glucuronidase concentrations two metabolites increased suggesting metabolites conjugated forms metabolites detected hydroxycyclohexylmethyl chminaca followed cyclohexylmethyl indazol carbonyl valine concentrations respectively although one preceding report showing estimations metabolism chminaca without reference standards first report dealing exact identification using reference standards quantification authentic urine specimen elsevier ireland ltd rights reserved
green fluorescent protein gfp variants widely used tools studying protein localization dynamics events cytoskeletal remodeling vesicular trafficking living cells quantitative methodologies using chimeric gfp fusions developed many applications however gfp somewhat resistant proteolysis thus fluorescence persists lysosome vacuole impede quantification cargo trafficking endocytic pathway alternative method quantifying endocytosis post endocytic trafficking events makes use superecliptic phluorin sensitive variant gfp quenched acidic environments chimeric fusion phluorin cytoplasmic tail transmembrane cargo proteins results dampening fluorescence upon incorporation cargo multivesicular bodies mvbs delivery lysosome vacuole lumen thus quenching vacuolar fluorescence facilitates quantification endocytosis early events endocytic pathway paper describes methods using phluorin tagged cargos quantification endocytosis via fluorescence microscopy well population based assays using flow cytometry
matrix metalloproteinase mmp mediator matrix remodelling proposed susceptibility locus genetic profile musculoskeletal soft tissue injuries therefore study aimed validate mmp gene risk marker injuries conducting case control genetic association study two independent samples groups three previously investigated mmp variants addition functional promoter variant genotyped australian control participants australian individuals chronic achilles tendinopathy similarly south african individuals acute anterior cruciate ligament ruptures matched control participants also analysed based high linkage previously associated mmp variant inferred found associated increased risk achilles tendinopathy within south african group lastly haplotype constructed investigated variants significantly associated reduced risk achilles tendinopathy con ten australian group conclusion signal surrounding mmp apparent respect achilles tendinopathy however whether investigated variants contributing injury susceptibility whether merely linked risk conferring variants mapping elsewhere within mmp gene cluster chromosome still requires refining
species diversity declining rapidly freshwater ecosystems consequences genetic diversity hence evolutionary potential poorly understood part reflects limited use development modern molecular tools genetic approaches address conservation questions rivers lakes wetlands widespread diverse functionally important organisms freshwater macroinvertebrates ideal candidates genetic approaches reveal example conservation consequences demographic histories past disturbances however availability microsatellite markers group limited using next generation sequencing microsatellite markers developed isoperla grammatica poda amphinemura sulcicollis stephens baetis rhodani pictet enable conservation genetic investigations widespread invertebrate species fifty two robust microsatellite loci developed per species high levels allelic diversity alleles per loci respectively tools allow assessment genetic structure dispersal demographic resilience model species function environmental change variation thereby aiding freshwater monitoring conservation authors urge capacity building support genetic applications conservation biology aquatic organisms copyright john wiley sons ltd
evaluate effects dietary high molybdenum hmo low copper lcu concentrations reproductive toxicity male mice mice divided groups groups fed following normal control diet group hmo diets hmo group lcu diet lcu group hmo lcu diets hmolcu group day superoxide dismutase sod malondialdehyde mda glutathione peroxidase gsh total antioxidant capacity aoc analyzed determine oxidative stress states morphological changes testicular tissue evaluated hematoxylin eosin staining ultrastructural changes monitored transmission electron microscopy results showed administration hmo lcu hmolcu decreased sperm density motility also increased rate teratosperm occurrence significant increase mda content decrease sod gsh aoc contents observed lcu hmo hmolcu groups testicular tissues cells mice damaged hmo damages serious case deficiency exposure hmo adversely affected reproductive system male mice dietary lcu plays key roles hmo induced reproductive toxicity
mhc highly polymorphic genomic region encodes transplantation immune regulatory molecules receives special attention genetic investigation important role regulation innate adaptive immune responses strong association numerous infectious autoimmune diseases mhc locus first discovered mouse past years studied intensively mice humans however recent years macaque species emerged important advanced experimental animal models biomedical research mhc important human immunodeficiency virus simian immunodeficiency virus transplantation studies undertaken association precise mhc genotyping haplotyping methods using sanger sequencing next generation sequencing special issue macaque immunology provide short review genomic similarities differences among human macaque mouse mhc class class regions emphasis association macaque class region mhc polymorphism haplotype structure function
human metabolism warfarin enantiomer catalyzed primarily cytochrome cypc enzyme broad drug substrate specificity leads drug warfarin interactions several warfarin analogs synthesized used determine whether exhibit diminished interactions cypc kinetics warfarin analogs inhibition human liver microsomal cypc catalyzed metabolism warfarin hydroxywarfarin investigated fluorowarfarin predominantly competitive inhibitors whereas racemic fluorowarfarin racemic trifluorowarfarin predominantly mixed inhibitors competitive inhibition alcohols produced reductive methylation side chain warfarin enantiomer inhibit warfarin metabolism whereas enantiomer primarily competitive inhibitor fluorine substituted warfarins warfarin alcohol apparently bind high affinity cypc thus use clinically efficacious would prevent cypc associated warfarin drug interactions warfarin alcohol inhibit cypc catalyzed metabolism warfarin less likely warfarin participate cypc associated warfarin drug interactions elsevier science ltd
endogenous non retroviral rna like sequences nrvss discovered genome wide range eukaryotes considered fossil rna viral elements integrated host genomes yet known mechanisms many cases fossils estimated millions years old likely number nrvs records increase rapidly due growing availability whole genome sequences many kinds eukaryotes discovery novel nrvss understanding phylogenetic relationship modern viral relatives provide important information deep evolutionary history rna virus host interactions chapter therefore common strategies identification characterization endogenous nrvss plants insects fungi described
introduction sunitinib multi target anti angiogenic tyrosine kinase inhibitor key molecule treatment metastatic renal cell carcinoma mrcc since first demonstrated efficacy ten years ago overall survival mrcc doubled part due sunitinib recent years progress made comprehension mechanism action resistance areas covered article clinical trials involving sunitinib kidney cancer reviewed defining different indications metastatic localized rcc rationale sunitinib efficacy preclinical trials past clinical trials ongoing clinical trials summarized dose scheme base discussed recommended dosage frequently well tolerated combination therapies appear toxic novel immunotherapies changing landscape mrcc treatment challenging sunitinib special attention paid towards cancer cell biology immunity involved treatment response expert commentary sunitinib place therapeutic arsenal redefined arrival major challengers dosage scheduling sunitinib remains major challenge
use test grid aid test construction well known paper describes use exercise involving student teachers biology teacher education programme purpose two fold serve feed bock instrument teaching aid students required plan tests photosynthesis human metabolism nutrition constrained conditions force examine carefully priorities grids analysed form basis individual group discussions diversity numbers items allotted pre selected sub topics one hand toxonomic levels cognitive demand individual students enable teacher diagnose whether previous course content internalized students identify cases tutoring necessary use group individual data convey certain basic facts assessment process method described successfully used author many years
report herein results study performed balearic islands following goals determine proportion pregnant non pregnant women planning pregnancy would choose undergo screening test fragile syndrome fxs accompanied appropriate information assess satisfaction increase stress among women participate screening collect epidemiological information incidence disease population collect demographic health history data assess participants awareness disease screening performed pregnant non pregnant women childbearing age results indicate high voluntary rate participation high level self reported satisfaction low levels stress test high incidence premutation population low level awareness existence fxs additional findings indicate significant correlation self reported health history premutation detection high premutation incidence seem specific indigenous balearic population based results discuss pros cons implementation preconception pregnant women screening fxs within public health screening program
surface topography titanium dental implants strongly influences osseointegration present work analyzed influence two implant surfaces characterized similar microtopography different nanotopography chemistry osteoblastic phenotype dental pulp stem cells dpscs effect osteogenic differentiation extracellular matrix ecm cell adhesion molecules production evaluated means molecular biology analyses morphology cells grown onto surfaces analyzed sem immunofluorescence safety surfaces tested using karyotype analysis ames test hemocompatibility assay results showed starting days dpscs culture substantial expression osteoblast specific markers strong increase cell adhesion molecules detected particular dpscs seeded implants expression microrna mirna involved osteoblastic commitment stem cells vascular cell adhesion molecule vcam factor involved angiogenesis strongly enhanced
sweet chestnut tree great economic fruit wood production ecological cultural importance europe large scale landscape genetic analysis natural populations sweet chestnut across europe applied evaluate geographic patterns genetic diversity identify spatial coincidences genetic discontinuities geographic barriers propose certain chestnut populations reservoirs genetic diversity conservation breeding programs six polymorphic microsatellite markers used genotyping wild trees sampled european sites geostatistical idw technique arcgis used produce maps genetic diversity parameters par synthetic map population membership value different gene pools genetic barriers investigated using barrier software locations overlaid digital elevation model gtopo diva gis software used propose priority areas conservation high values genetic diversity allelic richness observed central area sativa european distribution range highest values private allelic richness par found eastern area three main gene pools significant genetic barrier separating eastern central western populations identified areas high priority genetic conservation indicated georgia eastern turkey italy results increase knowledge biogeographic history sativa europe indicate geographic location different gene pools identify potential priority reservoirs genetic diversity
background molecular marker monitor disease progression treatment efficacy multiple sclerosis circulating microparticles represent potential snapshot disease activity blood brain barrier objectives methods profile plasma microparticles flow cytometry determine fingolimod could impact endothelial microparticles production results non treated patients compared healthy fingolimod treated patients endothelial microparticles higher cell microparticle numbers lower fingolimod dramatically reduced tumour necrosis factor tnf induced endothelial microparticle release vitro conclusion fingolimod restored dysregulated endothelial cell microparticle numbers could serve biomarker
development transgenic edible plants used production storage delivery systems recombinant vaccine antigens promising strategy obtain cost effective vaccines infectious diseases least use developing countries therefore used agrobacterium tumefaciens mediated gene transfer introduce gag gene encoding nucleocapsid protein hiv subtype arabidopsis thaliana plant genome eighteen plant lines confirmed positive gene pcr four lines showed apparent homozygous phenotype grown selective medium lines also showed transcription gene corresponding mrna mrna four cases generated protein plants verified western blot analysis plants shown contain protein per fresh tissue analysis localisation protein showed stem tissue contained largest amount protein twice much leaf tissue whereas protein detected roots using southern blotting found dna insertion events took place four lines respectively genetic insertions line stable generation gave rise protein cases verified western blotting mice fed fresh transgenic thaliana line anti gag igg obtained serum booster injection recombinant pgag immune response observed equal booster injection untreated mice mice fed thaliana plants
moso bamboo characterized infrequent sexual reproduction erratic flowering habit however molecular biology flower formation development well studied species studied molecular regulation mechanisms moso bamboo development flowering selecting three key regulatory pathways plant pathogen interaction plant hormone signal transduction protein processing endoplasmic reticulum different stages flowering moso bamboo selected phedof phemads six micrornas involved three pathways kegg pathway cluster analysis subcellular localization transcriptional activation western blotting insitu hybridization qrt pcr used investigate expression patterns regulatory roles pivotal genes different flower development stages differential expression patterns showed phedof phemads six mirnas may play vital regulatory roles flower development floral transition moso bamboo research paves way studies metabolic regulatory networks provides insight molecular regulation mechanisms moso bamboo flowering senescence
antimicrobial peptides amps crucial component natural immune system insects five types amps identified tobacco hornworm manduca sexta including attacin cecropin moricin gloverin lebocin report isolation lebocin related cdna clones antibacterial activity processed protein products cdna sequences composed constant end variable region containing copies nucleotide repeat sequence corresponding gene isolated sexta genomic library southern blotting results indicated gene lacks introns exists single copy genome genomic sequence contained complete one partial copy nucleotide repeat northern blot analysis revealed multiple transcripts major size differences mrna level sexta lebocin increased substantially fat body larvae injected bacteria rxxr motifs protein sequences led postulate precursors processed intracellular convertase form four bioactive peptides test hypothesis chemically synthesized peptides examined antibacterial activity peptide killed gram positive gram negative bacteria peptide similar sequence galleria mellonella amp affect bacterial growth peptide inactive peptide extra arg carboxyl terminus active escherichia coli high minimum inhibitory concentration peptide encoded repeat inactive antibacterial tests hypothesis posttranslational processing precursor proteins produces multiple bioactive peptides defense purposes validated identification peptides larval hemolymph via liquid chromatography tandem mass spectrometry comparison orthologs lepidopteran insects indicates mechanism may used generate several functional products single precursor elsevier ltd rights reserved
prostate cancer one common carcinomas among adult males recently genome wide association studies gwas identified several susceptibility genes prostate cancer however single locus results explain small proportion genetic etiology order understand multiple genetic variants may contribute penetrance prostate cancer conducted genome wide snp snp interaction study four populations involving cases controls exhaustively evaluated pairs snp snp interactions snps consensus four groups performed meta analysis combine results found multiple variants within region significantly interacted reached genome wide significance levels significant epistasis intergenic near rbsg intergenic near vapa notably vapa identified protein coding transcripts pten competing endogenous rna prostate cancer pten critical tumor suppressor gene frequently altered cancers addition involves several pseudogenes whose parental genes cancer related recently growing evidence strongly suggests multifaceted involvements pathogenesis cancer multiple regulatory elements found within indicating variants might regulate nearby genes confer risk disease additionally also found several significant epistasis near cancer related genes drug target enrichment analysis suggested genes top epistasis significantly overlapped target genes fda approved drugs treatment prostate cancer
background many micrornas mirnas recently shown demonstrate critical roles differentiation proliferation migration vascular smooth muscle cells vsmcs methods results study certain amount mirna expression vsmcs evaluated real time polymerase chain reaction found microrna mir expressed strongly common vascular well expressed mirnas vitro subsequently gain loss function study performed vitro vivo found mir vsmcs strongly downregulated concomitantly stimulation mir inhibited vsmcs proliferation migration vitro vivo furthermore ubiquitin conjugating enzyme ubei identified target gene endogenous mir luciferase reporter assay confirmed overexpression mir significantly reduced ubei inhibited phenotypic switch vsmcs knockdown ubei influence proliferation migration cultured vsmcs mir mimic overexpression mir induced apoptosis vsmcs deregulated protein expression ikba crucial signal pathway conclusions results study indicated mir vsmcs exerted anti atherosclerosis effect via inhibiting proliferation migration promoting apoptosis vsmcs specifically demonstrated mir exhibited effects vsmcs partially targeting ubei downregulating kappa kappa signaling pathway
mass spectrometry based proteomics continuing make major contributions discovery fundamental biological processes recently also developed assay platform capable measuring hundreds thousands proteins biological system field progressed amazing rate past five years terms technology well breadth depth applications areas life sciences technical approaches experimental stage back considered gold standard today community learning come grips volume complexity data generated revolution dna rna sequencing technology extends reach proteomic research practically species notion mass spectrometry potential eventually retire western blot longer realm science fiction review focus major technical conceptual developments since illustrate important recent applications
previous work supports role aquaporin aqp water channels rat hepatocyte bile formation mainly facilitating osmotically driven canalicular secretion water study tested whether condition compromised canalicular bile secretion estrogen induced intrahepatic cholestasis displays defective hepatocyte aqp functional expression alpha ethinylestradiol administration center dot body center dot day days rats bile flow reduced subcellular fractionation immunoblotting analysis found kda aqp significantly decreased similar plasma canalicular intracellular vesicular liver membranes however alpha ethinylestradiol induced cholestasis significantly affect protein level subcellular localization sinusoidal aqp immunohistochemistry liver aqps confirmed observations osmotic water permeability canalicular membranes measured stopped flow spectrophotometry significantly reduced cholestasis consistent defective canalicular aqp functional expression northern blotting found aqp mrna expression increased cholestasis suggesting posttranscriptional mechanism protein level reduction accordingly studies primary cultured rat hepatocytes indicated lysosomal protease inhibitor leupeptin prevented estrogen induced aqp downregulation conclusion hepatocyte aqp protein expression downregulated estrogen induced intrahepatic cholestasis presumably lysosomal mediated degradation reduced canalicular membrane aqp expression associated impaired osmotic membrane water permeability data support novel notion defective expression canalicular aqp contributes mechanism bile secretory dysfunction cholestatic hepatocytes
pyridoxal phosphate plp obligatory cofactor homodimeric mitochondrial enzyme aminolevulinate synthase alas controls metabolic flux porphyrin biosynthetic pathway animals fungi alpha subclass proteobacteria recent work provided explanation enzyme utilize plp catalyze mechanistically unusual cleavage one two substrate amino acid alpha carbon bonds without violating theory stereoelectronic control plp reaction type specificity ironically complex chemistry kinetically insignificant movement active site loop defines cat ultimately rate porphyrin biosynthesis kinetic behavior enzyme consistent equilibrium ordered induced fit mechanism wherein glycine must bind first portion intrinsic binding energy succinyl coenzyme utilized perturb enzyme conformational equilibrium towards closed state wherein catalysis occurs return open conformation coincident ala dissociation slowest step reaction cycle diverse variety loop mutations associated hyperactivity suggesting enzyme evolved purposefully slow perhaps means allow rapid regulation activity response yet undiscovered allosteric type effector recently discovered human erythroid alas mutations associated two different diseases mutations regulate activity lead linked sideroblastic anemia characterized abnormally high iron levels mitochondria mutations regulate activity associated linked dominant protoporphyria contrast phenotypically identified abnormally high porphyrin levels article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
synthetic dosage lethality sdl denotes genetic interaction two genes whereby underexpression gene combined overexpression gene lethal sdls offer promising way kill cancer cells inhibiting activity sdl partners activated oncogenes tumors often difficult target directly experimental genome wide sdl screens still scarce introduce network level computational modeling framework quantitatively predicts human sdls metabolism enzyme pair systematically knock flux combined stepwise flux increase search pairs reduce cellular growth either enzyme perturbed individually predictive signal emerging network sdls demonstrated five different ways successfully used predict gene essentiality shrna cancer cell line screens moving clinical tumors show sdls significantly underrepresented tumors furthermore breast cancer tumors sdls active iii smaller sizes result increased patient survival indicating activation sdls increases cancer vulnerability finally patient survival improves multiple sdls present pointing cumulative effect study lays basis quantitative identification cancer sdls model based mechanistic manner approach presented used identify sdls species cell types omics data necessary data driven identification missing
objective recent advancements molecular biology identified braf mutation common mutation melanoma wide use braf kinase inhibitor brafi patients metastatic melanoma established objective study examine impact braf mutation status use brafi conjunction stereotactic radiosurgery srs methods single center retrospective study patient charts electronic records reviewed date diagnosis primary malignancy braf mutation status chemotherapies used date diagnosis cns metastases date srs survival local tumor control srs adverse events patients divided groups group mutant braf without brafi treatment patients group mutant braf brafi treatment patients group wild type braf patients within cohort patients known braf mutation status treated srs individual brain metastases bms identified kaplan meier methodology used compare survival based binary parameter results median survival times diagnosis melanoma srs favorable patients braf mutation treated srs conjunction brafi group compared patients wild type braf group months months respectively log rank test srs provided local tumor control rate entire cohort patients furthermore local control rate improved patients treated srs conjunction brafi group compared patients wild type group braf mutation brafi group adjunct treatment bms conclusions braf mutation status appears play important role potent prognostic factor patients harboring melanoma brafi conjunction srs may benefit group patients terms survival srs acceptable safety profile
carrier proteins cps play critical role biosynthesis various natural products especially nonribosomal peptide synthetase nrps polyketide synthase pks enzymology cps referred peptidyl carrier proteins pcps acyl carrier proteins acps respectively cps either domain large multifunctional polypeptides standalone proteins termed type type respectively many biochemical studies type pks nrps cps type acps however recently number type pcps found biochemically characterized order understand possible interaction surfaces combinatorial biosynthetic efforts crystallized first characterized representative type pcp member blmi bleomycin biosynthetic pathway streptomyces verticillus atcc structure similar cps general closely resembles pcps comparisons previously determined pcp structures complex catalytic domains reveals common interaction surface surface highly variable charge shape likely confers specificity interactions previous nuclear magnetic resonance nmr analysis prototypical type pcp excised multimodular context revealed three conformational states comparison states structure blmi pcps reveals one nmr states found studies suggesting two states may relevant state represented blmi crystal structure therefore serve model type type pcps proteins wiley periodicals inc
emergence next generation sequencing provided new opportunities discovery new nonribosomal peptides nrps nrp synthethases nrpss however remain challenges characterization megasynthases genetic methods native hosts critical elucidation function fungal nrps vitro assays intact heterologously expressed proteins provide deeper mechanistic insights nrps enzymology previous work study nrps takes advantage saccharomyces cerevisiae strain npga robust versatile platform characterization fungal nrpss describe use yeast recombination strategies cerevisiae cloning nrps coding sequence based expression vector use affinity chromatography purification nrps total cerevisiae soluble protein fraction strategies reconstitution nrpss activities vitro
innate immune system includes toll like receptor tlr signaling plays important role inflammation oncogenesis although tlr common adaptor myeloid differentiation factor myd known multiple effects carcinogenesis role myd hepatocarcinogenesis remains unknown study myd expression examined samples human hepatocellular carcinoma hcc tissue immunohistochemistry western blot quantitative reverse transcriptase polymerase chain reaction methods relationships myd expression clinical pathological parameters analyzed results showed attenuated expression myd hcc tissue tumor cells significantly related hepatitis virus infection large tumor size positive vascular invasion intrahepatic metastasis western blot analysis myd protein nine normal livers hccs showed gender disparity attenuated expression cirrhotic livers low expression myd mrna evident hccs vascular invasion contrast previous reports results suggest attenuated expression myd hcc associated tumor progression
recent advances understanding molecular biology epithelial ovarian cancer led development number targeted therapies including poly adp ribose polymerase parp inhibitors parp inhibitors novel class therapeutic agents target tumors deficiencies homologous recombination dna repair pathway early studies shown significant efficacy parp inhibitors patients germline brca mutations become evident brca wild type patients defects homologous recombination repair pathway benefit therapeutic approach importantly companion homologous recombination deficiency scores developed help guide selection patients likely gain clinical benefit parp inhibition olaparib first extensively investigated parp inhibitor licensed europe maintenance treatment patients platinum sensitive relapsed brca mutated germ line somatic high grade serous ovarian cancer responded platinum based chemotherapy united states olaparib licensed treatment patients germline brca mutated ovarian cancer received lines chemotherapy number parp inhibitors late phase clinical development ovarian cancer including rucaparib niraparib veliparib talazoparib review focus current evidence parp inhibitors ovarian cancer discuss ongoing clinical trials future research directions rapidly evolving area
many cancer cells strong requirement glutamine aid understanding phenomenon labeled stereoisomer fluoroglutamine fgln previously developed vivo positron emission tomography pet present work comparative enzymological studies unlabeled fgln deamidated product fglu conducted adjunct pet studies findings follows rat kidney preparations catalyze deamidation fgln fgln fglu substrates various aminotransferases fglu substrate glutamate dehydrogenase sheep brain glutamine synthetase compound however strong inhibitor enzyme rat liver cytosolic fractions catalyze gamma elimination reaction fglu generating alpha ketoglutarate coupling deamidase reaction gamma elimination reaction provides explanation previous detection tumors exposed fgin one enzyme contributing reaction identified alanine aminotransferase catalyzes competing gamma elimination aminotransferase reactions fgiu appears first description aminotransferase catalyzing gamma elimination reaction present results demonstrate fgin fgiu useful analogues comparative studies various glutamine glutamateutilizing enzymes normal cancerous mammalian tissues suggest tumors may metabolize fgin generally similar fashion glutamine plants yeast bacteria major route ammonia assimilation involves consecutive action glutamate synthase plus glutamine synthetase glutamate synthase cycle suggested fgin fgiu useful probes studies ammonia assimilation glutamate synthase pathway organisms finally glutamine transaminases conserved mammals plants bacteria probably serve close methionine salvage pathway thus linking nitrogen metabolism sulfur metabolism one carbon metabolism suggested fgin may useful studies methionine salvage pathway variety organisms elsevier inc rights reserved
objective symptoms airway diseases often associated specific times day example midnight worsening cough frequent complaint patients laryngitis bronchitis speculate symptoms control circadian clock clock genes airway epithelium play important roles present study tried prove time specific expressions clock oscillating genes murine larynx materials methods adult wild type mice mcry mcry mutant mice used study employed immunohistochemistyr northern blotting examining circadian expression mper mper ebpbeta hnfbeta mucb results expression mper mrna showed strong day night expression difference abolished lesion suprachiasmatic nucleus mcry mcry mutant mice mper mper proteins showed similar expression profiles epithelium submucosal glands peak evening trough early morning nuclear proteins ebpbeta hnfbeta show rhythms mucb protein showed circadian oscillation laryngeal submucosal gland conclusion study confirmed existence local laryngeal clock controlled central clock suprachiasniatic nucleus mucb protein submucosal mucous gland also showed circadian rhythm consider rhythmic expressions may cause time specific symptoms among laryngeal diseases elsevier ireland ltd rights reserved
objective although increasing evidence shown long noncoding rnas lncrnas play important regulatory role pluripotency differentiation mesenchymal stem cells little known role lncrna maxillary sinus membrane stem cells msmscs goal study investigate expression profile function lncrnas osteogenic differentiation msmscs materials methods using lncrna microarray identify novel osteogenesis differentiation related lncrna msmscs lncrna modr functional role lncrna modr regulating osteogenesis evaluated quantitative real time polymerase chain reaction western blot alizarin red staining bioinformatic analyses predicted target genes gene ontology pathway network analysis applied study lncrna modr results show lncrna modr gradually upregulated osteogenic differentiation lncrna modr overexpression upregulated whereas lncrna modr silencing decreased expression osteogenic key marker runt related transcription factor runx depth analyses showed lncrna modr acts molecular sponge microrna mir prevents runx mediated suppression conclusion lncrnas act competing endogenous rna sequester microrna mir leading heightened runx expression thus promotes osteogenesis msmscs
ability classic tumour suppressive let family inhibit carcinogenesis tumour progression recurrence pluripotency cancer stem cells generated significant interest field cancer research suppressing degrading downstream targeted mrnas let affected aspects cell biology perplexing let affects oncogenesis large influx new mirnas kinds non coding rnas continuously defined review delineate complex functions let discuss future direction let research
variations dna copy number carry important information genome evolution regulation dna replication cancer cells rapid development single cell sequencing technology allows one explore gene expression heterogeneity among single cells thus providing important cancer cell evolution information single cell dna rna sequencing data usually low genome coverage requires extra step amplification accumulate enough samples however amplification introduce large bias makes bioinformatics analysis challenging accurately modeling distribution sequencing data effectively suppressing bias influence key success variations analysis recent advances demonstrate technical noises amplification likely follow negative binomial distribution special case poisson distribution thus tackle problem cnv detection formulating quadratic optimization problem involving two constraints underling signals corrupted poisson distributed noises imposing constraints sparsity smoothness reconstructed read depth signals single cell sequencing data anticipated fit cnvs patterns accurately efficient numerical solution based classical alternating direction minimization method admm tailored solve proposed model demonstrate advantages proposed method using synthetic empirical single cell sequencing data experimental results demonstrate proposed method achieves excellent performance high promise success single cell sequencing data crown copyright published elsevier ltd rights reserved
doubly uniparental inheritance dui mitochondrial dna mtdna implies coexistence two highly divergent gender associated mitogenomes transmitted independently exception strictly maternal inheritance mtdna characteristic bivalves occurs endangered freshwater mussel margaritifera margaritifera linnaeus study identifies first time new male rdna cox cox haplotypes margaritifera using non destructive sampling haemolymph samples collected mussels spent gonad contained exclusively female mitogenome whereas haemolymph extracted reproductively active mussels used procure male mitogenome identification partial rrna secondary structures female male sequences margaritifera supported existence structural differences two gender associated transcripts moreover novel rdna coxcox sequences integrated phylogenetic tree including homologous mtdna sequences several unionoid species phylogram revealed two clades haplotypes clustered according family taxa species family margaritiferidae occupying basal position findings consistent hypothesis single evolutionary origin dui system bivalve freshwater mussels rdna cox cox markers may useful investigating gender associated diversity across geographical range endangered species repercussions genetic sexing wild captive mussels linnean society london zoological journal linnean society
phospholipid flippases key regulators transbilayer lipid asymmetry eukaryotic cell membranes critical many trafficking signaling pathways atpases particular responsible uphill transport phospholipids exoplasmic cytosolic leaflet plasma membrane well membranes late secretory endocytic pathways thereby establishing transbilayer asymmetry recent studies combining cell biology biochemical approaches improved understanding path taken lipids atpases additionally identification several protein families catalyzing phospholipid scrambling disruption phospholipid asymmetry energy independent directional phospholipid transport well recent report structure scramblase opens way deeper characterization mechanism action discuss molecular nature mechanism lipids may flip across membranes emphasis active lipid transport catalyzed atpases article part special issue entitled cellular lipid landscape edited tim levine anant menon elsevier rights reserved
objective recent studies suggest selectin ligands expressed human leukocytes may differ species particularly mice elaborate evaluated impact glycosphingolipids expressed human myeloid cells regulating selectin mediated cell adhesion approach results series modified human cell lines primary neutrophils created targeting udp glucose ceramide glucosyltransferase using either lentivirus delivered shrna crispr cas based genome editing enzymology mass spectrometry confirm modified cells reduced abolished glucosylceramide biosynthesis glycomics profiling showed udp glucose ceramide glucosyltransferase disruption also increased prevalence bisecting glycans reduced overall sialoglycan expression leukocyte glycans microfluidics based flow chamber studies demonstrated udp glucose ceramide glucosyltransferase knockouts knockdowns display approximate reduction leukocyte rolling firm adhesion selectin bearing stimulated endothelial cells without altering cell adhesion selectin consistent concept glycosphingolipids support slow rolling transition firm arrest inhibiting udp glucose ceramide glucosyltransferase activity resulted frequent leukocyte detachment events skipping motion reduced diapedesis across endothelium cells bearing truncated glycans also sustained cell rolling selectin although ability recruited free fluid flow diminished conclusions glycosphingolipids likely contribute human myeloid cell adhesion selectin fluid shear particularly transition rolling cells firm arrest
currently metals widely used load bearing application due combination high mechanical strength fracture toughness however conventional metallic materials generally remain human body permanently bringing long term endothelial dysfunction corrosion products also considered potentially harmful tissues human body recent years magnesium alloys caused significant attention due outstanding advantages alloys mechanical properties similar bone avoid stress shielding also biocompatibly essential human metabolism cofactor many enzymes addition corrosion product likely physiologically beneficial importantly perfectly biodegradable body fluid material could match perfectly every requirement given application alloys extremely low corrosion resistance chloride containing environments limits applications interactions biological environments biomedical materials take place material surface biological response living tissues extrinsic biomaterials depends surface properties therefore surface modification form hard biocompatible corrosion resistant modified layer recently become interesting topic biomaterials paper reviews current research development status plasma surface modification technologies alloy biomedical materials unique advantage plasma modification surface properties biocompatibility enhanced selectively excellent bulk properties remain unchanged paper discusses characteristic different methods finally scientific challenges proposed based researches works done groups elsevier rights reserved
purpose review purpose review give overview viral meningitis focus areas uncertainty diagnostics treatment outcome recent findings bacterial meningitis declining incidence recent years similar time period molecular diagnostics increasingly used developments viral meningitis becoming relatively important however still many unanswered questions despite improvements diagnostics many laboratories use molecular methods even used many cases still remain without proven viral aetiology identified also established treatments viral meningitis one potential treatment aciclovir effective vitro herpes simplex virus never subjected clinical trial summary viruses increasingly important cause meningitis era declining bacterial disease exact viral aetiology varies according age country molecular diagnostics improve rate pathogen detection also reduce unnecessary antibiotics use length hospitalization research required treatments viral meningitis impact terms longer term sequelae
chemotherapy main treatment method patients chronic myeloid leukemia cml achieved marked results however acquisition multidrug resistance mdr seriously affected quality life survival rate patients overexpression inhibitors apoptosis proteins iaps adenosi triphosphate atp dependent binding cassette abc transporters two main causes mdr apollon mdr important representative members respectively among iaps abc transporters present study investigated role apollon mdr chemotherapy resistance mechanism interaction respectively knocked expression apollon mdr using short hairpin rna shrna adriamycin adm resistant human cml cells examined drug sensitivity consequences regard adm accumulation alterations expression apollon mdr expression levels apollon mdr mrna higher adm cells compared parental cells determined reverse transcription polymerase chain reaction pcr plasmids apollon mdr shrna respectively stably transfected adm cells using lipofectamine transfection efficiency detected fluorescence microscopy cell counting kit cck assay revealed apollon mdr knockdown significantly increased chemosensitivity adm cells adm flow cytometric assay revealed adm shmdr cells exhibited significantly increased intracellular accumulation adm changes found adm shapollon cells compared parental adm cells significantly decreased expression apollon mrna protein determined adm shapollon cells without affecting expression mdr determined pcr western blotting likewise expression levels mdr mrna protein also markedly downregulated adm shmdr cells effect apollon expression collectively findings demonstrated first time downregulation apollon mdr stable transfection apollon mdr targeting shrna induced mdr reversal respective inhibition apollon mdr expression function however reversal mechanism apollon mdr revealed direct interaction
human population continues grow exponentially fast developing populated countries whereas western europe getting older older year inevitably raises demand better efficient medical services without increasing economic burden proportion meet requirements improvement medical diagnosis certainly key aspect consider therefore need powerful analytical methodologies able deeper characterization human metabolism identification disease biomarkers endogenous molecules body fluids tissues ultimate goal reliable early medical diagnosis mitigating disease complications much possible microextraction techniques mets represent key step analytical methodologies providing samples suitable volumes purification levels necessary characterization target analytes aspect solid phase microextraction spme recently microextraction packed sorbent meps powerful sample preparation techniques characterized reduced time analysis low solvent consumption broad application moreover miniaturized techniques easily automatized high throughput performance clinical environment review explore interesting meps spme applications focusing recent trends applications medical diagnostic particularly vivo near real time applications
flavobacterium columnare etiological agent columnaris disease one important widespread bacterial pathogens freshwater fish study constructed two artificial selectable markers chloramphenicol spectinomycin resistance gene transfer columnare two new artificial selectable markers created placing chloramphenicol spectinomycin resistance gene control native acs regulatory region columnare functional columnare escherichia coli integrative conjugative plasmids constructed using markers introduced columnare via electroporation conjugation integrated plasmid dna confirmed southern blotting pcr analysis two markers employed future investigations gene deletion pathogenicity virulence factors columnare
membrane protein abundant component porcine transmissible gastroenteritis virus tgev particle exploit possibility using rna interference rnai strategy tgev infection three plasmids prnat prnat prnat expressing short hairpin rnas designed target three different coding regions gene tgev plasmids constructed transiently transfected porcine kidney cells determine whether constructs inhibited tgev production analysis cytopathic effects demonstrated prnat prnat could protect cells pathological changes specifically efficiently additionally indirect immunofluorescence tissue culture infectious dose tcid assays showed prnat prnat inhibited multiplication virus protein level effectively quantitative real time pcr confirmed amounts viral rnas cell cultures pre transfected three plasmids reduced respectively first report showing rnai targeting gene results could promote studies specific function viral genes associated tgev infection might provide theoretical basis potential therapeutic applications
pluripotent stem cells pscs powerful cellular tools generate different cell types body thus overcome often limited access human disease tissues becomes highly relevant aiming investigate cellular dys function diseases affecting central nervous system recent studies demonstrated psc differentiated cells show altered mitochondrial function metabolic profiles production reactive oxygen species raises emerging paradigm role mitochondria stem cell biology urges need identify mitochondrial pathways involved processes respect review focuses metabolic profile psc mitochondrial function influence reprogramming differentiation processes indeed embryonic stem cells escs induced pluripotent stem cells ipscs favor glycolytic pathway major source energy production oxidative phosphorylation psc mitochondria characterized spherical shape low copy number mitochondrial dna hyperpolarized state indeed mitochondria appear crucial role reprogramming ipsc maintenance pluripotent state differentiation moreover increase mitochondrial oxidative phosphorylation occur differentiation succeed therefore vitro differentiation neural stem cells nscs neurons compromised mechanisms impaired future research shed light mitochondrial impairment occurring pre differentiation neural stages nsc premature neurons may contribute etiopathogenesis neurodevelopmental neurological disorders
frequency finding clindamycin resistant anaerobic bacteria clinical samples doubled costa rica determine whether increase due dissemination erm genes aided tetq elements analyzed isolates bacteroides parabacteroides regional hospital national hospital community antimicrobial susceptibilities recorded broth micro dilution method erm genes detected pcr southern blotting addition plasmid isolation mating experiments performed clarify location mobility detected erm genes resistance clindamycin far frequent regional hospital national hospital community resistance tetracycline even common community outweighing hospitals mic clindamycin higher hospitals community opposite seen tetracycline sought genes ermg erma ermf detected hospitals ermf community opposition low frequency finding erm genes isolates positive tetq none detected genes encoded plasmids three isolates hospitals transferred erm genes laterally contrast hospital isolates two community isolates transferred tail despite widespread finding tetracyclineresistant tetq positive bacteria mobile erm genes rare bacterial collection conclude detected erm genes likely included typical conjugative transposons bacteroides parabacteroides elsevier ltd rights reserved
part effort support silico vitro based risk assessment evaluated accuracy associated conducting simple vitro vivo extrapolation ivive environmental compounds using available vitro human metabolism data ivive approach applied number compounds wide range properties spanning diversity characteristics environmental compounds possible resulting estimates vivo steady state blood concentration compared estimates derived basis human vivo kinetic data appears systematic bias estimation intrinsic clearance clint vitro versus vivo data vitro based estimates underestimating vivo clearance small values clint opposite relationship large values clint nevertheless resulting estimates good agreement chief drawback simple approach used study performs ivive prediction parent compound applicable toxicity associated metabolite elsevier ltd rights reserved
environmental epigenetics study environmental signals affect gene expression within growing field molecular biology experiments epigenetic effects maternal care offspring health received much scientific public attention often called upon showcase environmental epigenetics create new understanding life inherently biosocial one hand research exciting offers possible opportunities collaboration molecular biology social sciences also necessary consider political dimensions paper show commonsense assumptions sex gender sexuality class present design interpretation dissemination experiments epigenetic effects maternal care experiments come support claims human motherhood dense speculative cross traffic epigenetic studies rodents psychological epidemiological studies humans current research trends work illustrate rather interrogate existing stereotypes maternal agency responsibility analysis offer cautionary perspective regarding potentials challenges new forms collaborative biosocial knowledge practices emerging environmental epigenetics
chronic granulomatous disease rare inherited immunodeficiency disorder reduces superoxide generation ability phagocytes leading recurrent infections granulomatous inflammation report case previously healthy year old boy presented classic features crohn disease suspicion histopathologiclogic assessment allowed early diagnosis treatment chronic granulomatous disease onset infections
exists resurgence interest role intermediary metabolism medicine especially relation medical disorders coupled contemporary focus molecular biology genetics proteomics integration studies regulation alterations cellular metabolism health disease marriage vast potential elucidation factors conditions involved cellular metabolic functional changes heretofore could addressed earlier generations biochemists established major pathways intermediary metabolism achievement present potential requires appropriate application interpretation genetic proteomic studies relating cell metabolism cell function requires knowledge understanding principles relationships methodology biochemistry enzymology involved elucidation cellular regulatory enzymes metabolic pathways unfortunately many possibly contemporary molecular biologists adequately trained knowledgeable areas cell metabolism resulted much common inappropriate application misinformation genetic proteomic studies cell metabolism function presentation describes important relationships cellular intermediary metabolism provides examples appropriate inappropriate application genetics proteomics calls inclusion biochemistry enzymology cell metabolism cell physiology graduate postgraduate training molecular biology biomedical researchers elsevier rights reserved
absence steroid receptors known mechanism gene regulation steroid hormones candida albicans genome wide analysis albicans cells treated progesterone using eurogentec cdna microarrays find complete repertoire steroid responsive genes northern blotting analysis employed validate genes differentially regulated progesterone microarray experiments total genes found significantly regulated progesterone among regulated regulated observed progesterone considerably enhanced expression multi drug resistance mdr genes belonging atp binding cassette cdr cdr super family multidrug transporters suggesting possible relationship steroid stress mdr genes several genes associated hyphal induction establishment pathogenesis also found regulated silico search various transcription factor binding sites promoter affected genes revealed efg cph nrg tup mig regulated genes responsive progesterone stress responsive elements stre also found promoters several responsive genes data sheds new light regulation gene expression albicans human steroids correlation drug resistance virulence morphogenesis general stress response comparison drug induced stress response also discussed
adenosyl methionine sam universal biological cofactor found branches life plays critical role transfer methyl groups various biomolecules including dna proteins small molecule secondary metabolites methylation process thus important implications various disease processes applications industrial chemical processing methyl transfer catalysed sam dependent methyltransferases mtases far largest groups sam dependent enzymes significant amount known regarding structural biology enzymology enzymes consequently significant scope development new mtases sam analogues applications biomolecular imaging biocatalytic industrial processes review focus current efforts manipulation class sam dependent mtases use synthetic sam analogues together offer best prospects rational redesign towards biotechnological applications firstly metabolic engineering organisms incorporating small molecule mtases discussed applied variety areas industrial bioprocessing flavourants antibiotics frontier research biofuel production bioremediation secondly application mtases combination sam analogues reviewed allows tagging proteins oligonucleotides moieties methyl group tagging allows isolation tagged biomolecule aids visualisation range analytical methods review summarises potential advantages mtase mediated chemistry offers future perspectives downstream applications
development genetically modified plants important verify various factors potentially affect risk assessment well establish experimental program produce scientific reliable data however time cost consuming process develop plants well prepare scientific convincible data government approval therefore using transgenic hot pepper tolerant new cmv pathotype attempted suggest methodological procedures probe saturation southern blot analysis pcr elisa expression analysis identification stability evaluation inserted gene genetically modified plant required submission approval ten partially overlapped probes covering full length inserted gene produced could identify inserted gene stacked single copy well partial element existed also could identify stability inserted gene stacked hot pepper using probe saturation expression analysis pcr elisa also could provide stable expression transcript proteins leaves placenta pericarp fruits cmv resistant hot pepper
studies caenorhabditis elegans nucleus provided fascinating insight organization activities eukaryotic cells organelle holds genetic blueprint cell nucleus critical basically every aspect cell biology stereotypical development elegans one cell stage embryo fertile hermaphrodite somatic nuclei allowed identification mutants specific alterations gene expression programs nuclear morphology nuclear positioning moreover early elegans embryo excellent model dissect mitotic processes nuclear disassembly reformation high spatiotemporal resolution review several features elegans nucleus including composition structure dynamics also discuss spatial organization chromatin regulation gene expression depends tight control nucleocytoplasmic transport finally extensive connections nucleus cytoskeleton implications development described processes elegans nucleus evolutionarily conserved highlighting relevance powerful versatile model organism human biology
analyzed iliac crest bone marrow biopsy specimens patients metastatic castration resistant prostate cancer divided test validation set developed score based computed tomography hounsfield units lactate dehydrogenase levels associated positive biopsy result score used select patients bone marrow biopsy provide tissue molecular characterization background urgent need castration resistant prostate cancer molecular characterization guide treatment constrained disease predilection metastasize primarily bone hypothesized use clinical imaging criteria could maximize tissue acquisition bone marrow biopsies bmbs aimed develop score selection patients undergoing bmb materials methods total bmbs performed patients included derivation set used validation set clinical laboratory data prebiopsy computed tomography parameters hounsfield units hus determined score prediction biopsy positivity developed logistic regression analysis derivation set tested validation set results biopsy specimens positive test set validation set univariable analysis hemoglobin lactate dehydrogenase prostate specific antigen mean hus selected score based ldh level mean hus developed multivariate analysis associated bmb positivity validation set odds ratio confidence interval area curve score test set validation set conclusion bmb iliac crest feasible technique obtaining tumor tissue genomic analysis patients castration resistant prostate cancer metastatic bone signature based mean hus ldh level predict positive yield acceptable internal validity prospective studies independent cohorts needed establish external validity score author published elsevier inc
purpose review aciclovir acv first line drug management herpes simplex virus hsv varicella zoster virus vzv infections long term administration acv treatment severe infections immunocompromised patients lead development drug resistance furthermore emergence isolates resistant acv increasingly recognized immunocompetent individuals herpetic keratitis review describes mechanisms involved drug resistance hsv vzv laboratory diagnosis management patients infections refractory acv therapy recent findings genotypic testing frequently performed diagnosis infections caused drug resistant hsv vzv isolates molecular biology based systems generation recombinant viruses developed link unknown mutations drug phenotypes fast sensitive methods based next generation sequencing improve detection heterogeneous viral populations drug resistant viruses temporal changes antiviral therapy could allow better patient management novel promising compounds acting targets differ viral dna polymerase clinical development summary antiviral drug resistance monitoring hsv vzv required rational use antiviral therapy high risk populations
whereas autism spectrum disorder asd exhibits striking heterogeneity genetics clinical presentation dysfunction mechanistic target rapamycin complex mtorc signaling pathway identified molecular feature common several well characterized syndromes high prevalence asd additionally recent findings also implicated mtorc signaling abnormalities subset nonsyndromic asd suggesting defective mtorc pathway may potential converging mechanism asd pathology across different etiologies however mechanistic evidence causal link aberrant mtorc pathway activity asd neurobehavioral features varies depending asd form involved review first discuss six monogenic asd related syndromes including classical potentially novel mtoropathies highlighting contribution understanding neurobiological mechanisms underlying asd discuss existing evidence suggesting aberrant mtorc signaling may also play role nonsyndromic asd
background andean cultivar paloma resistant mesoamerican andean races colletotrichum lindemuthianum fungal pathogen causes destructive anthracnose disease common bean remarkably paloma resistant mesoamerican races among virulent races anthracnose pathogen genes conferring anthracnose resistance common bean overcome races genetic mapping relationship resistant gene paloma previously characterized anthracnose resistance genes great contribution breeding programs results inheritance resistance studies paloma performed population cross paloma resistant cornell susceptible inoculated race generations cross paloma resistant susceptible inoculated race results studies demonstrated single dominant gene confers resistance paloma allelism tests performed multiple races lindemuthianum showed resistance gene paloma provisionally named independent anthracnose resistance genes bulk segregant analysis using snp chip barcbeank positioned approximate location lower arm chromosome mapping analysis located gene region flanked snp markers distance respectively conclusions results presented showed paloma cultivar new dominant gene conferring resistance anthracnose independent genes previously described linkage gene snp markers extremely important marker assisted introgression gene elite cultivars order enhance resistance
renal glomerulus consists glomerular endothelial cells podocytes mesangial cells cooperate glomerular filtration produced monoclonal antibodies glomerular cells order identify different types glomerular cells among antibodies clone specifically recognizes thy molecule expressed mesangial cells injection antibody rats resulted mesangial cell specific injury within min induced mesangial proliferative glomerulonephritis reproducible manner examined role mesangial cells glomerular function using several experimental tools including induced nephritis model mesangial cell culture deletion specific genes herein describe characterization induced nephritis formation glomerular capillary network mesangial matrix turnover intercellular signaling glomerular cells new molecules involved wide variety mesangial cell functions also introduced
first time sea island cotton gossypium barbadense thaumatin like protein gene gbtlp potential role secondary cell wall development overexpressed tobacco elucidate function presence transgene verified southern blotting higher expression levels gbtlp transgenic tobacco plants revealed reverse transcription quantitative real time polymerase chain reaction analyses transgenic plants constitutively higher expression gbtlp showed enhanced resistance different stress agents particularly performance verticillium dahliae exceptional transgenic tobacco plants also exhibited considerable resistance fusarium oxysporum abiotic stresses including salinity drought experiment transgenic plants without gbtlp expression also used controls behaved similar non transgenic control plants overexpression gbtlp significant deleterious effect plant growth except flowering delayed weeks apparent pleiotropic effect novel gene given insight plant defense mechanism elsevier inc rights reserved
systemic investigation energy metabolism frame selfish brain theory focusses supply chains describe transport chain beginning energy exploration remote environment energy consumed neurons brain modeling main difficulty consists selection significant core models among enormous member known substances regulatory mechanisms afflicted considerable uncertainties general supplement standard bottom modeling certain mechanisms deductive approach therefore investigate general supply chains deduce indispensable elements regulatory mechanisms available observations critical selection system properties underlying mechanisms enables simulate observations explained classical glucostatic lipostatic theory observations nearly constant energy level brain different responses periphery brain atrophic periods finally development diabetes
kinetic equivalency propylene glycol monomethyl ether pgme derived propylene glycol monomethyl ether acetate pgmea well parent compound pgme following intravenous administration fischer rats evaluated addition vitro hydrolysis rates pgmea blood liver tissue rats humans determined blood kinetics determined following administration rats pgme pgmea low body weight high equimolar dosages pgme pgmea respectively blood time courses pgme elimination dosages compounds identical half lives pgmea elimination following administration pgmea calculated min respectively rat human vitro hydrolysis rates pgmea determined incubation mug pgmea whole blood liver homogenate rate loss pgmea rapid rat blood human blood hydrolysis half lives min human blood min rat blood mug concentrations pgmea respectively contrast rate loss pgmea human rat liver homogenate incubations similar min min respectively data demonstrate rapid hydrolysis pgmea vivo parent glycol ether pgme hydrolyzed kinetics pgme derived pgmea identical pgme study supports use toxicological database pgme surrogate pgmea
effect frequent protein malnutrition liver function intensively examined thus effects alternating days protein amino acid free diet followed days complete diet repeated three times pfd female mouse liver examined expression carbonic anhydrase iii caiii fatty acid synthase fas glyceraldehyde phosphate dehydrogenase gapdh glutathione transferase gstp liver assessed proteomics reverse transcriptase polymerase chain reaction northern blotting activities liver gsts glutathione reductase catalase cat well serum glutamic oxaloacetic transaminase sgot glutamic pyruvic transaminase sgpt also tested additionally oxidative damage examined measuring protein carbonylation lipid peroxidation liver histology examined light electron microscopy compared control mice pfd increased content fas protein fas mrna levels caiii caiii mrnas decreased respectively addition pfd significantly change content gstp produced increase mrna level decreased activities cat gsts pfd liver protein carbonylation lipid peroxidation increased respectively serum pfd increased activities sgot sgpt addition pfd showed histological pattern characteristic hepatic damage together data suggest frequent dietary amino acid deprivation causes hepatic metabolic ultrastructural changes fashion similar precancerous cancerous conditions
quantitative real time pcr qrt pcr become routine robust technique measuring expression genes interest validating microarray experiments monitoring biomarkers however concerns raised accuracy qrt pcr china well rest world previously used qrt pcr study response anr root expressed mads box genes fluctuations supply nitrate phosphate sulphate hydroponic growth conditions study used northern blotting qrt pcr analyses confirm nutritional regulation mads box genes arabidopsis thaliana test whether technologies produce results information obtained indicated qrt pcr results consistent obtained northern blotting hybridization tested root expressed mads box genes response different nitrate phosphate sulphate growth conditions furthermore novel results showed expressions agl agl agl regulated response supply qrt pcr northern blotting analyses
access kinetic parameters lipolytic enzyme adsorption onto lipids essential better understanding interfacial enzymology lipase lipid interactions interfacial adsorption dog gastric lipase dgl monitored function surface pressure independently catalytic activity using non hydrolysable dilauroyl glycero phosphocholine dlpc monomolecular films acid stable dgl initiates fat digestion stomach selected adsorption kinetics onto hydrophobic solid surfaces already studied gastric lipase therefore used model enzyme validate experimental theoretical approaches results show adsorption process dgl lipid water interface depends dependent adsorption equilibrium coefficient optimum ads ads values allowed indirect estimation molar fraction phi mol well molecular area dgl adsorbed onto dlpc monolayer based data model dgl adsorption onto dlpc monolayer proposed surface pressure range elsevier rights reserved
epicatechin widely consumed dietary flavonoid substantial evidence contributes health benefits reported flavanol rich cocoa products including dark chocolate numerous reports described appearance epicatechin epicatechin phase conjugates sulfates glucuronides epicatechin methylepicatechin blood urine samples subjects following ingestion epicatechin widely reported method quantifying total epicatechin plasma urine samples involves hydrolysis mixture beta glucuronidase sulfatase convert conjugates epicatechin aglycone subsequently quantified observed lack hydrolysis epicatechin sulfates methylepicatechin sulfates using commercial sulfatases investigated samples urine plasma subjects consumed epicatechin subjected enzyme hydrolysis analysed using analysed without enzyme hydrolysis attempts increase extent hydrolysis epicatechin conjugates made increasing amount enzyme hydrolysis length incubations using alternative sources enzyme standard hydrolysis conditions failed hydrolyse majority epicatechin sulfates methylepicatechin sulfates even quantity enzyme incubation period increased optimised alternative sources sulfatases used epicatechin monosulfates methylepicatechin monosulfates remained major peaks chromatograms samples assessment literature data strongly suggested majority reports enzyme hydrolysis used significantly underestimated epicatechin bioavailability humans methods quantifying epicatechin concentrations blood urine need take account lack hydrolysis methyl epicatechin sulfates example quantifying directly using elsevier ltd rights reserved
horse breeding induces transient endometrial inflammation subset mares unable resolve inflammation considered susceptible persistent mating induced endometritis pmie select seminal plasma proteins cysteine rich secretory protein crisp lactoferrin shown affect innate immune response sperm vitro objective study determine whether addition crisp lactoferrin time insemination effect mrna expression endometrial cytokines susceptible mares breeding six mares classified susceptible pmie inseminated four consecutive oestrous cycles treatments randomized order crisp lactoferrin seminal plasma positive control lactated ringer solution lrs negative control total volume combined spermatozoa pooled two stallions six hours treatment endometrial biopsy obtained qpcr analysis selected genes associated inflammation pro inflammatory cytokines interleukin beta tumour necrosis factor tnf alpha interferon inf gamma anti inflammatory cytokines inflammatory modulating cytokine seminal plasma treatment increased mrna expression beta suppressing mrna expression tnf lactoferrin also suppressed mrna expression tnf conclusion exogenous lactoferrin may considered one modulator complex series events resulting poorly regulated pro inflammatory response seen susceptible mares
special feature results symposium ants ant interactions biotic environments held munich may deals interactions ants insects plants microbes fungi studied micro macroevolutionary levels wide range approaches field ecology next generation sequencing chemical ecology molecular genetics paper review key aspects biotic interactions provide background information papers special feature listing major types biotic interactions ants engage present brief overview ant ant communication ant plant interactions ant fungus symbioses recent insights ants endosymbionts using large molecular clock dated formicidae phylogeny map evolutionary origins different ant clades interactions plants fungi hemiptera ants biotic interactions provide ideal systems address fundamental ecological evolutionary questions mutualism coevolution adaptation animal communication
total host seeking adult dermacentor reticulatus ixodida ixodidae ticks examined prevalence francisella tularensis holarctica thiotrichales francisellaceae natural focus tularaemia floodplain forest meadow ecosystem along lower reaches dyje thaya river south moravia czech republic ticks pooled specimens per pool homogenates inoculated subcutaneously week old specific pathogen free mice dead mice sectioned spleens cultivated thioglycollate glucose blood agar impression smears spleen liver heart blood giemsa stained sixty four pools positive tularensis overall minimum infection rate mir overall mirs female male reticulatus examined respectively mirs fluctuated across years estimated bacterial load infected ticks varied log infectious tularensis cells per tick seven cells ticks low loads prevalent infectious cells detected ticks ticks infected ticks monitoring reticulatus presence cell numbers tularensis may valuable tool surveillance tularaemia
malaria parasite plasmodium falciparum related organisms possess relict plastid known apicoplast apicoplast protein synthesis validated drug target malaria antibiotics inhibit translation prokaryotes also inhibit apicoplast protein synthesis sometimes used malaria prophylaxis treatment identified components indirect aminoacylation pathway gln trna gln biosynthesis plasmodium hypothesized would essential apicoplast protein synthesis report characterization first enzyme pathway apicoplast glutamyl trna synthetase glurs expressed recombinant falciparum enzyme escherichia coli showed nondiscriminating glutamylates apicoplast trna glu trna gln determined kinetic parameters demonstrated inhibition known bacterial glurs inhibitor also localized plasmodium berghei ortholog apicoplast blood stage parasites could delete pbglurs gene data show gln trna gln biosynthesis plasmodium apicoplast proceeds via essential indirect aminoacylation pathway reminiscent bacteria plastids
adenylation crucial enzymatic process biosynthesis nonribosomal peptide synthetase nrps derived natural products adenylation domains considered gatekeepers nrpss since select activate load carboxylic acid substrate onto downstream peptidyl carrier protein pcp domain nrps describe coupled continuous kinetic assay nrps adenylation domains substitutes pcp domain hydroxylamine acceptor molecule pyrophosphate released first half reaction measured using two enzyme coupling system detects conversion chromogenic substrate methylthioguanosine mesg methylthioguanine profiling substrate specificity unknown engineered adenylation domains studying chemical inhibition adenylating enzymes robust assay widespread utility broad field nrps enzymology
malaria caused parasites genus plasmodium transmitted humans bites anopheles mosquitoes elimination plasmodium falciparum predicted plasmodium vivax remain important cause morbidity mortality outside africa stressing importance developing vaccine vivax malaria study assessed immunogenicity protective efficacy two vivax antigens apical membrane antigen ama kda terminal fragment merozoite surface protein msp plasmid recombinant dna prime adenoviral vector boost regimen aotus monkeys groups monkeys immunized plasmid dna alone alone prime boost regimens antigen prime boost regimens antigens empty vector controls subjected blood stage challenge heterologous immunization regimen antigen pair protective either antigen alone antigens delivered single vaccine platform basis ability induce longest prepatent period longest time peak level parasitemia lowest peak mean levels parasitemia smallest area parasitemia curve highest self cure rate overall prechallenge msp antibody titers strongly correlated decreased parasite burden nevertheless significant proportion immunized animals developed anemia conclusion vivax plasmid dna serotype vaccine encoding blood stage parasite antigens ama msp heterologous prime boost immunization regimen provided significant protection blood stage challenge aotus monkeys indicating suitability antigens regimen development
laminin alpha chain constituent mainly localized mesenchyme derived tissues suggested role formation function endothelium transmigration inflammatory cells endothelium invasion certain tumors study evaluated distribution alpha chain lms conventional clear cell renal cell carcinomas rccs primary tumors two metastases two papillary rccs two oncocytomas immunohistochemistry tumors immunoreactivity alpha chain found vasculature stroma basement membranes detected around tumor cell islets tumors showed immunoreactivity alpha chain cases northern blotting inhibition protein secretion monensin immunoprecipitation combined western blotting showed caki achn caki renal carcinoma cell lines produce alpha chain lms cell adhesion assay recombinant human promote adhesion renal carcinoma cells inhibited adhesion fibronectin cell migration assay cells migrated results suggest alpha chain lms adhesive function could thus play role detachment migration invasion renal carcinoma cells vivo
hexamoll dincha diisononyl cyclohexane dicarboxylate new high molecular weight plasticizer phthalate substitute study metabolism dincha investigated oral dosage three male volunteers approximately hexamoll dincha resulting individual doses body weight urine samples consecutively collected analogy iso nonylphthalate dinp metabolism quantified simple monoester mono isononyl cyclohexane dicarboxylate minch secondary oxidized metabolites hplc via isotope dilution analysis additionally quantified unspecific full breakdown product cyclohexane dicarboxylic acid chda via standard addition postulated metabolites present samples analyzed unspecific chda identified major urinary metabolite representing dose mean three volunteers range dose excreted monoesters oxidative modifications particular minch oxo minch carboxy minch less excreted simple monoester minch sum dincha dose excreted metabolites urine within metabolites investigated excreted within application secondary oxidized metabolites elimination half times proved apt specific biomarkers determine dincha exposure study provide reliable urinary excretion factors calculate dincha intakes based metabolites environmental occupational studies
least century debate continued whether cancer risk reduced schizophrenia genetic studies also suggested conditions may share protein transcriptional pathways author predicted pathophysiology schizophrenia confers protection cancer immunology schizophrenia reflect state tumor suppression opposite tumor escape examine possibility author performed literature search measurements cytokines drug first episode subjects schizophrenia comparison cytokine expression tumor escape tumor suppression comparison showed instead either tumor suppression escape schizophrenia appears state tumor equilibrium based finding author hypothesized clinical presentation schizophrenia may involve cell transformation similar early stage cancer initiation attenuated tumorigenesis condition could reflect presence actual tumor ovarian teratoma causing anti nmda receptor encephalitis would explain small percentage cases find likely tumor model author compared cytokine profile schizophrenia individual cancers found best match melanoma demonstrate viability theory author compared hallmarks emerging hallmarks enabling characteristics melanoma schizophrenia found many findings schizophrenia understood schizophrenia condition attenuated tumorigenesis
background abnormal expression molecules tumor tissues induce degradation extracellular matrix closely associated axillary lymph node metastasis angiogenesis cancer progression drug resistance patients methods measured confirmed expression cdst mmp mrnas proteins cancer tissues adjacent normal tissues postoperative non small cell lung cancer nsclc patients either adenocarcinoma squamous cell carcinoma using quantitative reverse transcription polymerase chain reaction gene sequencing immunohistochemical analysis results cdst mmp expression closely associated histopathological classification lymph node metastasis tnm stage tumors difference statistically significant median overall survival high cdst expression group months confidence interval low expression group months median high mmp expression group months low expression group months conclusion rates cdst mmp expression higher squamous cell carcinomas adenocarcinomas closely associated lymph node metastasis tnm stage affected patients prognoses karger gmbh freiburg
desire improved methods biomass conversion fuels feedstocks awakened interest enzymology plant cell wall degradation complex polysaccharide xyloglucan abundant plant matter may account total primary cell wall carbohydrates despite studies focused xyloglucan saccharification requires consortium enzymes including endo xyloglucanases alpha xylosidases beta galactosidases alpha fucosidases among others present paper show characterization xya key alpha xylosidase xyloglucan utilization model gram negative soil saprophyte cellvibrio japonicus cjxya exhibits high regiospecificity hydrolysis xgos xylogluco oligosaccharides particular preference longer substrates crystallographic structures apo enzyme trapped covalent fluoro beta xylosyl enzyme intermediate together docking studies xxxg heptasaccharide revealed first time glycoside hydrolase family importance domain insert recognition longer oligosaccharides extension active site pocket observation cjxya localized outer membrane provided support biological model xyloglucan utilization japonicas xgos generated action secreted endo xyloglucanase ultimately degraded close proximity cell surface moreover present study diversifies toolbox glycosidases specific modification saccharification cell wall polymers biotechnological applications
hereditary cancer comprises breast cancer cases identification germinal mutations enables initiation preventive program include early detection preventive treatment may also major impact cancer therapy several recurrent mutations identified brca genes jewish populations however ethnic groups israel recurrent mutations identified date group established panel sequencing cancer patients identify recurrent founder new mutations heterogeneous diverse populations israel evaluated five breast cancer patients arab descent diagnosed cancer age years identified previously described mutation two women unrelated arab families two probands diagnosed breast cancer young age years significant family history spanning wide range tumors breast cancer papillary thyroid cancer glioblastoma multiform gbm colon cancer leukemia variant expected disrupt aspp binding domain dna binding domain defined clinvar likely pathogenic hgmd disease mutation tested unrelated arab cancer patients father carrier patient using real time polymerase chain reaction pcr approach identified four additional carriers two one lung cancer father carrier patient diagnosed gbm another carrier suffering identified using myriad panel suggesting recurrent mutation population frequency selected patients suggest testing arab women breast cancer young age arab patients multiple malignancies suggestive family history
recent studies showed large amount graphene oxide accumulated kidney liver injected intravenously evaluation lethal apoptosis gene expression tissues stress important paper vivo dose dependent effects graphene oxide reduced graphene oxide nanoplatelets kidney liver mice studied balb mice treated body weight nanoplatelets molecular biology analysis showed graphene nanoplatelets injected intravenously lead overexpression bax gene kidney liver tissues addition nanoparticles significantly increase bcl gene expression kidney liver tissues graphene significantly increase level sgpt groups comparison control group also comparison control group level sgot groups significantly increased published elsevier
background complexity rna regulation one current frontiers animal plant molecular biology research rna binding proteins rbps characteristically involved post transcriptional gene regulation interaction rna recently mrna bound proteome mammalian cell lines successfully cataloged using new method called interactome capture method relies crosslinking proteins rna purifying mrna using complementary oligo beads identifying crosslinked proteins using mass spectrometry describe optimized system mrna interactome capture arabidopsis thaliana leaf mesophyll protoplasts cell type often used functional cellular assays results established conditions optimal protein yield namely amount starting tissue duration irradiation effect intensity demonstrated high efficiency mrna protein pull oligo bead capture proteins annotated rna binding capacity overrepresented obtained medium scale mrna bound proteome indicating specificity method providing vivo crosslinking experimental evidence several candidate rbps leaf mesophyll protoplasts conclusions described method applied plant cells allows identifying proteins capacity bind mrna directly method scaled applied plant cell types species contribute comprehensive description rbp proteome plants
metabolism haloperidol potentially neurotoxic pyridinium species hpp rhpp demonstrated humans vitro studies microsomes harvested various animal species indicate tetrahydropyridines hptp rhptp could intermediates pathway however yet demonstrated vivo humans study plasma urine collected eight critically ill patients treated high doses intravenous analyzed hptp rhptp using hplc electrochemical detection however neither hptp rhptp detected despite plasma concentrations rhp higher previously reported hpp rhpp present urine high concentrations accounted respectively administered dose apparent elimination half lives hpp rhpp respectively absence hptp rhptp plasma urine suggests humans tetrahydropyridines either insignificant intermediates metabolism vivo present transiently site formation released circulation
recent innovations molecular biology colorectal cancer crc genetics facilitated understanding pathogenesis sporadic hereditary crc syndromes development technology enabled data collection number genetic factors lead understanding molecular mechanisms underlying crc incidence nature crc mixture genetic environmental factors current field interest understand molecular basis could shape predisposition developing crc disease progression response chemotherapy article summarize new developing genetic markers assess clinical value inherited sporadic crc
background periodontal therapy enamel matrix derivative emd successfully used tissue regeneration altering activity various cells involved periodontal regeneration studies focused primarily clinical parameters outcome effects emd oral epithelial cells crucial importance order understand biology regeneration aims study investigate proliferative cytotoxic effects emd oral epithelial cells possible influences epithelial barrier function methods scc cells human squamous cell carcinoma cell line primary keratinocytes either treated emd dissolved culture medium added wells inserts precoated emd cells incubated hours proliferation rate analyzed measuring bromo deoxyuridine nucleotide uptake cytotoxic effects emd treatment sampled lactate dehydrogenase release alterations epithelial barrier function induced emd investigated analysis transepithelial electrical resistance ter results statistically significant inhibitory effects malignant primary cell proliferation could demonstrated precoating culture plate wells emd cytotoxic effects caused emd detected precoating inserts emd induced significant increase ter barrier function conclusions investigation compares applying emd solution cells precoating wells emd precoating wells used solely inhibition cell proliferation evident precoating may represent suitable clinical usage furthermore prelayering emd induced increase ter primary cells results suggest emd may enhance barrier function
microfluidic flow cells provide excellent control formation microemulsions widely applied templates fabrication hydrogel microparticles vesicles defined physicochemical properties recent years bio orthogonal synthesis schemes macromolecular building blocks well microfluidic processing mild reaction conditions greatly extended microfluidics based vesicle hydrogel design beyond material sciences particular synthetic cell biology tissue engineering well cell free biotechnology microgels vesicles experimental platforms known parameter space allow mimicking studying manipulating key aspects cellular life vitro tailored fashion article provides insights recent advances fabricate vesicles microgels microfluidic jets droplets tailored volume shape internal structure presents developments applying materials artificial extracellular matrices well simple cell mimics designed microfluidics
purpose review lipoprotein strongest independent genetic risk factor myocardial infarction aortic stenosis also associated forms atherosclerotic cardiovascular disease cvd including ischemic stroke levels genetically determined remain fairly stable throughout life elevated affects one five individuals worldwide recent findings herein review recent epidemiologic genetic evidence supporting causal role cvd highlight recommendations made european canadian guidelines regarding summarize rapidly evolving field lowering therapies including antisense therapies proprotein convertase subtilisin kexin type inhibitors summary novel therapies horizon poised gain significant clinical relevance lowering could significant impact burden cvd
objectives compare results systemic antitubercular therapy att immunomodulatory therapy imt patients serpiginous choroiditis multifocal serpiginoid choroiditis msc materials methods clinical records patients msc reviewed patients divided groups according treatment applied group included patients msc treated att corticosteroid group included patients msc treated conventional imt interferon alpha monotherapy results group clinical remission achieved msc total patients administration att year two patients msc reactivation months cessation att two patients recurrence completion att patients resistant att received imt therapy group clinical remission achieved msc total patients year treatment recurrent inflammation observed msc patients months initiation therapy responded well local systemic imt modification clinical remission achieved months cumulative dose higher group nine msc patients treated att msc patients treated imt achieved remission one patients treated att patients treated imt achieved remission conclusion although statistically significant result could achieved small case series results suggest att may appropriate first choice treatment msc associated latent tuberculosis may administered patients unresponsive imt
breakdown blood brain barrier bbb critical step development autoimmune diseases multiple sclerosis animal model experimental autoimmune encephalomyelitis eae process characterized transmigration activated cells across brain endothelial cells ecs main constituents bbb however consequences brain function upon interaction cells largely unknown describe assay allows evaluation primary mouse brain microvascular mbmec function barrier integrity interaction cells time assay makes use impedance cell spectroscopy powerful tool studying monolayer integrity permeability measuring changes transendothelial electrical resistance teer cell layer capacitance ccl direct contact ecs stimulated naive cells capable inducing monolayer dysfunction visualized decrease teer increase ccl assay records changes monolayer integrity continuous automated fashion sensitive enough distinguish different strengths stimuli levels cell activation enables investigation consequences targeted modulation cell interaction using wide range substances antibodies pharmacological reagents cytokines technique also used quality control integrity vitro cell transmigration assays applications make versatile tool studying bbb properties physiological pathophysiological conditions
methodology available evaluating cooking quality dry beans impractical assessing large number progenies aims study propose new strategy evaluating cooking quality grains estimate genetic phenotypic parameters using selection index total progenies cycle recurrent selection program evaluated three locations yield grain type cooked grains samples grains progeny placing cooker percentage cooked grains assessed new strategy evaluating cooking quality efficient allowed nine fold increase number progenies evaluated per unit time comparison available methods absence association grain yield percentage cooked grains grain type indicated possible select high yielding lines excellent grain aspect good cooking properties using selection index
objective insulin like growth factor igf axis involved human oncogenesis metastasis development various solid tumors including breast cancer aim study assess association igf igfbinding protein igfbp serum levels presence circulating tumor cells ctcs peripheral blood women diagnosed early breast cancer ebc adjuvant chemotherapy design patients early stage breast adenocarcinomas retrospectively evaluated immunoradiometric irma assays employed vitro determination igf igfbp serum levels blood samples collected surgical treatment initiation adjuvant chemotherapy ctcs presence assessed detection cytokeratin mrna transcripts using quantitative real timereverse transcription polymerase chain reaction pcr igf igfbp serum levels correlated cfcs presence adjuvant chemotherapy well tumor characteristics including tumor size axillary lymph node status oestrogen progestorene human epidermural growth factor receptor receptor status log rank test applied investigate possible association igf igfbp serum levels disease free interval dfi overall survival results initiation adjuvant therapy igf igfbp serum levels moderately associated spearman rho presenting significant differences across age groups values igf serum levels correlate presence ctcs initiation completion adjuvant chemotherapy similarly igfbp serum levels show significant association detectable ctcs either completion adjuvant chemotherapy statistically significant association clinical outcome patients terms dfi igf dfi igfbp dfi serum levels conclusions igf igfbp serum levels initiation adjuvant chemotherapy indicative ctcs presence blood correlate clinical outcome women early stage breast cancer elsevier ltd rights reserved
yellowwood cladrastis kentukea grows small widely scattered populations wild also popular ornamental tree thrives planted urban areas outside natural range since small native populations yellowwood several states considered risk extirpation cultivated population could serve situ repository yellowwood genetic diversity could used restore lost local populations species potential value cultivated yellowwood conservation depends genetic diversity among cultivated trees compared natural populations using nuclear microsatellite markers genotyped yellowwoods natural populations indiana missouri arkansas kentucky along trees urban parks landscapes indiana ohio missouri found even statistics adjusted based population size urban population higher genetic diversity wild populations sampled indicating commercially grown yellowwood likely mixture genotypes isolated wild populations observed strong genetic differentiation among wild populations evidence inbreeding least one wild populations
protein microarrays represent powerful technology potential serve tools detection broad range analytes numerous applications diagnostics drug development food safety environmental monitoring key features analytical protein microarrays include high throughput relatively low costs due minimal reagent consumption multiplexing fast kinetics hence measurements possibility functional integration far especially fundamental studies molecular cell biology conducted using protein microarrays potential clinical notably point care applications yet fully utilized question arises features implemented improvements made order fully exploit technology past identified various obstacles overcome order promote protein microarray technology diagnostic field issues need significant improvement make technology attractive diagnostic market instance low sensitivity deficiency reproducibility inadequate analysis time lack high quality antibodies validated reagents lack automation portable instruments cost instruments necessary chip production read scope paper hand review approaches solve problems
insulin insulin like growth factor igf signaling pathway plays critical role regulation islet cell biology however signaling pathway utilized insulin directly modulate cells unclear interrogate whether insulin exerts endocrine effects regulating proteins insulin igf signaling cascade vivo physiological states via insulin receptor designed two experimental approaches glucose gavage hyperinsulinemic intravenous infusion studies either cell specific insulin receptor knock irko control mice immunostaining sections pancreas collected immediately glucose gavage insulin infusion controls showed significant increases pakt psk perk cells significant decrease nuclear foxo cells compared corresponding vehicle treated groups contrast irkos observed significant changes pakt psk cells either experiment however perk cells significantly increased attenuated decrease nuclear foxo cells evident response glucose gavage insulin infusion treatment control irko cell lines glucose insulin showed significantly decreased nuclear foxo cells suggesting direct effects furthermore blocking mapk signaling virtually effect foxo nuclear export controls contrast attenuated export irko cells data suggest insulin acts cells endocrine manner normal situation cells lacking insulin receptors insulin glucose minimally activate akt pathway erk phosphorylation foxo nuclear export occur independently insulin signaling
purpose review outline roles pdzk hepatic selective hdl cholesterol uptake reverse cholesterol transport consequences atherosclerosis development recent findings much understanding physiological roles pdzk hdl metabolism atherosclerosis comes studies genetically manipulated mice show pdzk play key roles hdl metabolism protection atherosclerosis recent identification rare loss function mutations human scarb gene verifies plays similar roles hdl metabolism humans rare mutations human scarb pdzk genes remain characterized may potentially devastating consequences function summary identification carriers rare mutations human scarb pdzk impair function gene products characterization effects mutations hdl cholesterol levels atherosclerosis add understanding importance hdl function cholesterol flux opposed hdl cholesterol levels per protection cardiovascular disease
established tumors build stressful hostile microenvironment blocks development protective innate adaptive immune responses different subsets immunoregulatory myeloid populations including dendritic cells myeloid derived suppressor cells mdscs macrophages accumulate stressed tumor milieu represent major impediment success various forms cancer immunotherapy specific conditions factors within tumor masses including hypoxia nutrient starvation low increased levels free radicals provoke state endoplasmic reticulum stress malignant cells infiltrating myeloid cells order cope stress cancer cells tumor associated myeloid cells activate integrated signaling pathway known unfolded protein response upr promotes cell survival adaptation adverse environmental conditions however upr also induce cell death unresolved levels stress three branches upr described including activation inositol requiring enzyme ire pancreatic kinase pkr like kinase perk activating transcription factor atf minireview briefly discuss role stress specific upr mediators tumor development growth metastasis addition describe sustained stress responses operate key mediators chronic inflammation immune suppression within tumors finally discuss multiple pharmacological approaches overcome immunosuppressive effect upr tumors could potentially enhance efficacy cancer immunotherapies reprogramming function tumor infiltrating myeloid cells
purpose telomere length biomarker aging known oxidative stress accelerate telomere shortening whereas antioxidants delay shortening carotenoids antioxidants favorably associated health aging related diseases caused oxidative stress association telomere length less certain investigated association blood carotenoid levels leukocyte telomere length representative sample adults methods analyzed participants aged years older national health nutrition examination survey levels carotenoids alphacarotene beta carotene trans cis beta cryptoxanthin combined lutein zeaxanthin trans lycopene measured using high performance liquid chromatography leukocyte telomere length ratio assayed using quantitative polymerase chain reaction method results doubling blood alpha carotene beta carotene trans cis beta cryptoxanthin associated approximately longer telomeres compared lowest carotenoid quartile alpha carotene beta carotene trans cis beta cryptoxanthin telomere length adults highest quartiles significantly increased conclusion found increasing levels blood carotenoid significantly associated longer leukocyte telomeres adults high intake carotenoid rich food may play role protecting telomeres regulating telomere length
root resorption pathological process multifactorial origin related permanent loss dental root structure response mechanical inflammatory autoimmune infectious stimulus external apical root resorption earr frequent clinical complication secondary orthodontic tooth movement apart variables related treatment environmental factors interindividual genetic variations confer susceptibility resistance occurrence context genetic predisposition described etiological factor together mechanical factors derived orthodontic treatment recent years international research groups determined degree influence genetic biomarkers defining increased reduced susceptibility postorthodontic earr influences gene cluster ilb ila ilrn prx casp opg tnfrsfb rank tnfrsfa osteopontin opn tnf vitamin receptor taqi tnsalp irak analyzed objective present review study compile analyze latest information genetic background predisposing earr orthodontic treatment genetics based studies along basic science research field might help clarify exact nature earr influence genetic inheritance possibly lead prevention even eradication phenomenon orthodontic treatment
years elapsed since severe acute respiratory syndrome sars triggered first global alert coronavirus infections virus transmission humans quickly halted public health measures human infections sars coronavirus sars cov observed since however coronaviruses still pose continuous threat human health exemplified recent emergence middle east respiratory syndrome mers humans work sars cov widens knowledge epidemiology pathophysiology immunology coronaviruses may shed light mers coronavirus mers cov confirmed cell immunity plays important role recovery sars cov infection herein summarize cell immunological studies sars cov discuss potential cross reactivity sars cov specific immunity mers cov may provide useful recommendations development broad spectrum vaccines coronavirus infections elsevier rights reserved
background substance use misuse suicidal thoughts behaviors tend occur purpose study examine whether suicidal ideation attempt related onset alcohol nicotine cannabis use dependence early use alcohol nicotine cannabis associated onset suicidal ideation attempt whether associations persist controlling covariates family history alcohol problems major depression internalizing externalizing disorders methods prospective cohort collaborative study genetics alcoholism coga used cross sectional discrete time logistic regression survival analyses examined associations suicidal ideation attempt onset alcohol nicotine cannabis use dependence survival models also examined whether individual early substance use related onset ideation attempt results ideation related odds onset subsequent alcohol nicotine cannabis use attempt associated odds later alcohol nicotine cannabis dependence even accounting covariates evidence early substance use related subsequent onset ideation attempt limited several sex race differences emerged limitations sample ascertained family history alcoholism participants followed allowing censored observations reporting bias conclusion suicide attempts associated increased likelihood onset substance dependence
flowering locus flc encodes mads box domain protein flowering repressor involved key position arabidopsis arabidopsis thaliana flowering network brassica species several flc homologues involved flowering time like arabidopsis flc report analysis splicing variation brpflc expression brpflc homologues associated early flowering purple flowering stalk brassica campestris ssp chinensis var purpurea bailey indicated splice site mutation happened intron splice site three alternative splicing patterns brpflc including entire exon excluded intron retained identified purple flowering stalk one normal splicing pattern pakchoi brassica campestris ssp chinensis var communis northern blotting semi quantitative pcr revealed expression levels three flc homologues purple flowering stalk lower pakchoi however expression levels downstream genes suppressor overexpression constans soc flowering locus higher purple flowering stalk results suggest natural splicing site mutation brpflc gene repressed expression brpflc genes contribute significantly flowering time variation purple flowering stalk
psychotherapeutic genetic counseling increasingly relevant practice description paper aim demonstrate psychotherapeutic genetic counseling achieved using psychological theories guide one approach working clients describe two illustrative examples fuzzy trace theory cognitive behavior theory apply two challenging cases theories partially derived evidence beneficial client outcomes using psychotherapeutic approach patient care settings aim demonstrate two specific theories inform psychotherapeutic genetic counseling practice use examples take psychological theory effectively apply genetic counseling
herpesviruses use vesicle mediated transfer intranuclearly assembled nucleocapsids nuclear envelope final maturation cytoplasm molecular basis novel vesicular nucleo cytoplasmic transport beginning elucidated detail heterodimeric viral nuclear egress complex nec conserved within classical herpesviruses mediates vesicle formation inner nuclear membrane inm polymerization hexagonal lattice followed fusion vesicle membrane outer nuclear membrane onm mechanisms capsid inclusion well vesicle membrane fusion however largely unclear interestingly similar transport mechanism demonstrated nuclear export large ribonucleoprotein complexes drosophila neuromuscular junction formation indicating widespread presence novel concept cellular nucleo cytoplasmic transport
work demonstrate development highly sensitive selective surface plasmon resonance spr immunosensor label free detection ractopamine rct low ppb direct pork liver samples rct kind beta adrenergic agonist alkylphenyl substituent development high performance sensing methods rcf critical issue vital role human metabolism construct immunosensor system biosensor surface formed immobilization ractopamine ovalbumin rct ova conjugate onto thiolate self assembled spr sensor chip covalent amide binding detection rct performed based indirect competitive inhibition principle detailed works carried focusing optimizing conditions affect immunosensitivity including immobilization buffer immunobinding buffer ova concentration antibody concentration activation time regeneration buffer etc preferable way determine optimal antibody concentration performed comparing used reported researches optimal conditions biosensor exhibits linear detection range lod ngml improved developed spr immunosensor sensitive detection rct reported ones elsevier rights reserved
histone deacetylation reciprocally mediated histone deacetylases hdac acetyltransferases represents one major form post translational modification previous research indicates hdacs play essential regulatory role development various immune cells however specific function individual hdacs remains largely unexplored hdac member class hdacs profoundly investigated nervous system expression profile function hdac cells barely known first time report hdac expressed multiple cell lineages using cell specific hdac deficient mice discovered lack hdac alter frequencies conventional cells invariant nkt inkt cells regulatory cells within thymus secondary lymphoid organs moreover conventional cells inkt cells wild type hdac deficient mice displayed significant difference cytokine production conclusion results imply steady stage hdac required development function multiple cell lineages including conventional cells inkt cells
background micrornas mirnas small noncoding rnas whose function modulators gene expression crucial proper control cell growth although many micrornas found express central nervous system cns role regulatory networks involved function pathological process nerve cells emerging present study possible mechanisms one neuronal mirnas mir affected growth nervous cells investigated using vitro cell line model methods expression pattern mir atra treated human glioma cell lines detected northern blotting situ localization effect mir proliferation apoptosis human glioma cells analyzed mts assay tunel flow cytometry analysis addition identification target gene mir studied dual luciferase activity assay immunoblot analysis results found differential expression mir trans retinoic acid atra treated human glioma cell lines regulation mir partially restored cell viability inhibited cell apoptosis cells treated atra regulation mirb decreased human glioma cells proliferation enhanced sensitivity human glioma cells atra induced apoptosis addition found inverse relationship expression mirb cell apoptosis related protein bcl modifying factor bmf mir interact untranslated region utr bmf conclusion findings indicate overexpression mirb promotes human glioma cell proliferation inhibits atra induced cell apoptosis low expression mir sensitizes cells atra induced apoptosis bmf may play important role process mir influencing cell apoptosis copyright karger basel
aquaporins aqps family small membrane proteins transport water molecules across plasma membrane along osmotic gradient mammals express subtypes aqps including recently reported subcellular aqps aqp organ expresses specific subsets aqp subtypes inner ear aqps essential establishment maintenance two distinct fluids endolymph perilymph evaluate contribution aqps establishment inner ear function used quantitative reverse transcription polymerase chain reaction quantify expression levels known aqps entire development maturation inner ear using systematic longitudinal quantification found aqp majorly constantly expressed inner ear expression levels several aqps follow characteristic longitudinal patterns increasing aqp decreasing aqp peak expression aqp particular expression level aqp increased fold also performed situ hybridization aqp determined unique localization aqp outer hair cells immunohistochemistry aqp revealed localization supporting cells inside organ corti root cells emergence aqp expression cells coincident marked increase expression level combining quantification localization data discuss possible contributions aqps inner ear function
hyperglycemia prominent sign characterizes diabetes hyperglycemia favors malignant cell growth providing energy cancer cells clinical studies also showed increased risk diabetes associated different types cancers addition poorly regulated glucose metabolism diabetic patients often found increased levels chronic inflammatory markers interleukin beta tumor necrosis factor tnf alpha emerging evidence highlighted activation immune response progression development cancer cells therefore uncontrolled proinflammatory responses could conceivably create chronic inflammatory state promoting tumor favorable microenvironment potentially triggering immune overactivation cancer growth understand hyperglycemia contributes immune overactivation tumor microenvironment development chronic inflammation associated tumors may provide insights tumor biology immunology paper provides brief introduction hyperglycemia associated diseases followed comprehensive overview current findings regulatory molecular mechanisms glycosylation proteoglycans extracellular matrix hyperglycemic conditions authors discuss role hyperglycemia tumorigenesis particularly prostate liver colorectal pancreatic cancers well contribution hyperglycemia chronic inflammation authors end brief discussion future perspectives hyperglycemia tumorigenesis potential applications alternative effective therapeutic strategies hyperglycemia associated cancers elsevier ireland ltd rights reserved
symbiotic interaction legume plants rhizobia results formation root nodules symbiotic plant cells host harbor thousands nitrogen fixing rhizobia medicago truncatula nodules activated defense nad mutant identified using reverse genetics methods mutant phenotype characterized using cell molecular biology approaches rna sequencing technique used analyze transcriptomic reprogramming nad mutant nodules nad mutant plants rhizobial infection propagation infection threads normal whereas rhizobia symbiotic plant cells become necrotic immediately rhizobia released infection threads symbiotic cells nodules defense associated responses detected nad nodules nad specifically present root nodule symbiosis plants exception morus notabilis transcript highly induced nodules nad encodes small uncharacterized protein two predicted transmembrane helices localized endoplasmic reticulum data demonstrate positive role nad maintenance rhizobial endosymbiosis nodulation
background foamy viruses fvs spumaretrovirinae subfamily distinct retroviruses many features molecular biology replication strategy clearly different orthoretroviruses human immunodeficiency murine leukemia human cell lymphotropic viruses gag terminal region responsible capsid formation particle budding via interaction env however critical residues motifs region functional interaction currently ill defined especially non primate fvs results mutagenesis terminal gag residues feline ffv reveals key residues essential either capsid assembly viral budding via interaction ffv env leader protein elp vitro gag elp interaction screen gag mutations abolishing particle assembly also interfered elp binding indicating gag assembly prerequisite highly specific interaction gradient sedimentation analyses cytosolic proteins indicate wild type gag mostly assembled virus capsids moreover proteolytic processing gag correlates capsid assembly mostly completely independent particle budding addition gag processing correlates presence packaging competent ffv genomic rna suggesting pol encapsidation via genomic rna prerequisite gag processing though appended heterogeneous myristoylation signal rescues gag particle budding mutants unable form capsids defective interacting elp fails generate infectious particles package pol evidenced lack gag processing conclusions changes proteolytic gag processing intracellular capsid assembly particle budding infectivity defined terminal gag mutants highlight essential distinct partially overlapping roles viral assembly budding discussion findings based recent model developed gag elp interactions prototype
myopathy facioscapulohumeral muscular dystrophy type fshd caused copy number variation macrosatellite repeat chromosome unaffected individuals number units varies whereas units seen fshd cases homologous heterogenous array found chromosome contractions array typically associated fshd discriminating chromosome chromosome arrays well determining array size requires use pulsed field gel electrophoresis southern blotting isolation high quality dna
beta lapachone entered phases clinical trials treatment solid tumors therapeutic efficacy beta lapachone closely related metabolic process order contribute better understanding human metabolism beta lapachone cunninghamella elegans atcc used microbial model mammalian metabolism biotransform beta lapachone two new glycosylated derivatives produced chemical structures elucidated hydroxy dimethyl dihydro naphtho pyran beta glucopyranoside hydroxy dimethyl dihydro naphtho pyran beta glucopyranoside nmr nmr hmbc hmqc cosy hrms analyses major derivative displayed lower activity breast cancer cell line skbr beta lapachone show cytotoxicity normal fibroblasts cell line whereas beta lapachone highly toxic metabolites reported first time similar occur phase human metabolism phytochemical society europe published elsevier rights reserved
background potassium plays key role human metabolism health disease impact recipient serum potassium concentration mortality liver transplantation described previously methods assessed effect recipient survival adult first single organ liver transplant recipients united kingdom ireland march february adjusting recipient donor graft characteristics results overall risk adjusted mortality significantly varied higher among hyperkalemic mmol recipients hazard ratio confidence interval mmol compared hypokalemic mmol recipients however excess mortality confined first posttransplant year among hyperkalemic recipients significant difference thereafter also true recipients mmol year contrast mmol mmol similar risk adjusted mortality time points used continuous variable multivariable analysis mmol increase associated increased adjusted risk mortality year years conclusion recipient independent predictor death liver transplantation finding could clinical utility management risk stratification selection prioritization appropriate candidates transplantation among patients end stage liver disease
important issue molecular biology establish whether transcript levels given gene used proxies corresponding protein levels developed targeted proteomics approach set human non secreted proteins based parallel reaction monitoring measure steady state conditions absolute protein copy numbers across human tissues cell lines compared levels corresponding mrna levels using transcriptomics study shows transcript protein levels correlate well unless gene specific rna protein rtp conversion factor independent tissue type introduced thus significantly enhancing predictability protein copy numbers rna levels results show rtp ratio varies significantly hundred copies per mrna molecule genes several hundred thousands protein copies per mrna molecule others conclusion data suggest transcriptome analysis used tool predict protein copy numbers per cell thus forming attractive link field genomics proteomics
drug induced respiratory depression common side effect agents used anesthesia practice provide analgesia sedation depression ventilatory drive spontaneously breathing patient lead severe cardiorespiratory events considered primary cause morbidity reliable predictions respiratory inhibition clinical setting would therefore provide valuable means improve safety drug delivery although multiple studies investigated regulation breathing man presence absence ventilatory depressant drugs unified description respiratory pharmacodynamics available study proposes mathematical model human metabolism cardiorespiratory regulation integrating several isolated physiological pharmacological aspects acute drug induced ventilatory depression single theoretical framework description respiratory regulation parsimonious yet comprehensive structure substantial predictive capability simulations relative synergistic interaction hypercarbic hypoxic respiratory drive global effect drugs control breathing good agreement published experimental data besides providing clinically relevant predictions respiratory depression model also serve test bed investigate issues drug tolerability dose finding control non steady state conditions
alterations mitochondrial respiration contribute development progression cancer via abnormal biogenesis including generation reactive oxygen species ubiquinol cytochrome reductase hinge protein uqcrh consists cytochrome complex serving respiration mitochondria present study analyzed uqcrh abnormalities hepatocellular carcinoma hcc association clinical outcomes patients uqcrh expression hcc determined via semiquantitative quantitative real time reverse transcriptase polymerase chain reaction surgically resected hcc tissues positive hepatitis virus surface antigen uqcrh frequently overexpressed hcc tissues based fold cutoff uqcrh overexpression observed hccs larger tumor size poorer differentiation vascular invasion kaplan meier analysis revealed significantly shorter overall recurrence free survival patients tumors overexpressing uqcrh prognostic impact uqcrh significant subgroups patients divided according fetoprotein afp level patient subgroup higher afp levels exhibited significant differences year overall recurrence free survival rates groups without uqcrh overexpression contrast marked survival differences observed subgroups lower afp levels multivariate analysis defined uqcrh independent poor prognostic factor conclusively results indicate uqcrh overexpression correlated poor outcomes hcc patients furthermore patients grouped high risk based elevated afp lack uqcrh overexpression could useful indicator clinical treatment
bone defect important topic public health novel therapies based osteogenic induction natural antiosteoporotic compounds including plant derived estrogens current study osteogenic potential sophora pachycarpa root extract spre explored human adipose derived mesenchymal stem cells herein adipose derived mesenchymal stem cells osteoinducted presence increased concentrations extract days cell viability evaluated mtt assay differentiated cells stained alizarin red calcium deposition subjected alkaline phosphatase alp assay enzymatic activity assess expression bone related genes treated cells evaluated real time polymerase chain reaction mtt test demonstrated spre toxic effects cell viability treating cells spre noticeably promoted alp activity mineralization mrna expression runt related transcription factor runx bone gamma carboxyglutamate protein bglap secreted phosphoprotein spp collagen type alpha cola additionally cells subjected spre showed highest osteogenic effects according high performance liquid chromatography fingerprinting spre osteoprotective effects spre probably due presence phytochemicals estrogen like activity extract thus spre might suitable therapeutic agent bone defects therapy future research copyright john wiley sons ltd
research suggested lycopene may metabolized eccentric cleavage catalyzed beta carotene oxygenase resulting generation apo lycopenals apo lycopenal apo lycopenal reported previously raw tomato show several apo lycopenals also present raw processed foods well human plasma apo lycopenal standards prepared vitro oxidation lycopene high performance liquid chromatography tandem mass spectrometry hplc method using atmospheric pressure chemical ionization negative mode developed separate detect apo apo apo apo apo apo lycopenal products formed reaction hexane acetone extracts raw tomato red grapefruit watermelon processed tomato products analyzed well plasma individuals consumed tomato juice weeks apo apo apo apo apo lycopenals detected quantified food products tested well plasma sum apo lycopenals roma tomato tomato paste nmol plasma conclude several apo lycopenals addition apo lycopenal present lycopene containing foods addition presence apo lycopenals plasma may derive absorption apo lycopenals directly food human metabolism
based ethnographic archival research conducted north american judaism messianic judaism article argues group uses dna appear sociologically similar ways actually differ profoundly theological level analysis moves beyond dna testing per focus anthropologist kim tallbear calls gene talk referring idea essential truths identity inhere sequences dna contrasting jews messianic jews demonstrate clearly scholars begun recognize theological commitments may drive investments genetic science interpretations show religiously significant identities associated race ethnicity lineage interact dna science coming viewed inalienable qualities reside self move beyond phenotype alone finally argue gene talk contexts religiously inflected practice serves binds communities implicitly explicitly authorize existing theological ideals
care prevention congenital disorders cds emerging unprioritised health need south africa inadequate empirical data underreporting conceal true burden cds medical genetic services confront problem regressed positive epidemiological transition country demands services improved significantly reduce child mortality current sector capacity inadequate required personnel targets reached quickly enough meet growing health need even relevant posts designated historically genetic trained nurses played defined role primary healthcare phc recognising diagnosing common cds counselling patients families referring complex matters limited tertiary medical genetic services available policy changes redress past inequalities healthcare priorities resulted genetic services incorporated phc genetic nurses retaining genetic services role medium long term aim would develop medical genetic services appropriate capacity levels healthcare urgent short term need provide basic medical genetic services phc central achieving upgrading implementation previously successful medical genetics education programme mgep post graduate distance learning education programme implemented congenital disorders course book distance education tool promoting independent home based learning together tools offer approach swiftly build nursing work force improved knowledge skills medical genetics
basic leucine zipper bzip proteins ubiquitous plants play important roles plant defense responses study based expressed sequence tag suppression subtractive hybridization cdna library lilium regale wilson fusarium oxysporum lilii infection novel bzip transcription factor gene lrbzip isolated regale root using rapid amplification cdna ends method predicted protein lrbzip amino acid residues contains basic domain signature leucine zipper motif quantitative reverse transcription pcr qrt pcr analysis showed transcription level lrbzip higher roots regale young stems leaves moreover expression lrbzip regulated incompatible interaction regale oxysporum lilii well treatments stress related signaling molecules verify function lrbzip constitutive expression vector lrbzip constructed transferred tobacco nicotiana tabacum xanthi results southern blotting qrt pcr analyses demonstrated lrbzip integrated genome tobacco transformants highly expressed normal conditions transgenic tobacco lines showed higher antioxidant enzyme activities transcription levels several resistance related genes wild type moreover transgenic tobacco plants showed strong resistance oxysporum lilii infection
although known time organophosphate chemicals containing moiety irreversible inhibitors cytochrome knowledge generally applied human metabolism xenobiotics recent studies demonstrated organophosphate insecticides containing moiety potent inhibitors metabolism xenobiotics endogenous substrates human liver microsomes specific human cylochrome isoforms
investigate basis susceptibility phenicols oxazolidinones porcine enterococcus faecalis cppf despite presence multiresistance gene cfr southern blotting conjugation transformation analyses conducted confirm plasmid location transferability cfr cppf genetic environment cfr determined sequence analysis transcription translation cfr examined rtpcr western blotting respectively modifications within rrna sequence identified primer extension electrotransformation southern blotting indicated cppf transformant contained two cfr carrying plasmids size complete sequence smaller plasmid pcppf determined shared identity corresponding region cfr carrying plasmid pef faecalis cattle origin moreover genetic environment cfr plasmid pcppf according sequencing results although cfr mrna cfr protein modification site detected cfr carrying transformant elevated mics chloramphenicol florfenicol linezolid indicating cfr fails mediate resistance respective antibiotics faecalis first report cfr gene failing elevate mics corresponding antibiotics although genetic basis apparent resistance phenotype remains determined finding may implications surveillance studies target cfr gene
purpose review although gout one common forms inflammatory arthritis relatively neglected recently despite progress many areas pathophysiology genetics gout development new urate lowering therapies remain number unanswered clinical questions resurgence interest gout important recognize key aspects gout management remain challenging require research recent findings unanswered clinical issues outlined review basic aspects gout management clinicians treating people gout face daily basis include urate lowering therapy commenced appropriate target serum urate use prophylaxis starting urate lowering therapy appropriate urate lowering therapy particularly chronic kidney disease summary issues outlined article subject ongoing clinical research use allopurinol people chronic kidney impairment may less relevant advent potentially safer urate lowering therapies time understanding aid clinical decision making required
high throughput screening techniques analyze metabolic endpoints biological processes identify contributions genetic predisposition environmental factors development common diseases studies applying controlled physiological challenges reveal dysregulation metabolic responses may predictive associated diseases however large scale epidemiological studies well controlled physiological challenge conditions extended fasting periods defined food intake pose logistic challenges culturally religiously motivated behavioral patterns life style changes provide natural setting used enroll large number study volunteers report proof principle study conducted within muslim community showing metabolomics study holy month ramadan provide unique opportunity explore pre prandial postprandial response human metabolism nutritional challenges five blood samples obtained eleven healthy male volunteers taken directly two hours consumption controlled meal evening days ramadan night fast several weeks ramadan observed increases glucose insulin lactate levels postprandial time point confirm expected physiological response food intake targeted metabolomics revealed significant physiologically plausible responses food intake increase bile acid amino acid levels decrease long chain acyl carnitine polyamine levels decrease concentrations number phospholipids samples taken days ramadan shows long term response extended fasting may differ response short term fasting present study design scalable larger populations may extended study metabolic response defined patient groups individuals type diabetes
currently china schistosomiasis control program shifted focus transmission control elimination disease effective forecast surveillance systems schistiosomiasis great importance issuing timely early warnings risk infection therefore implementing preventive measures avoid infection great demand sensitive specific methods improve surveillance system early detection japonicum infection sentinel mice study reported sensitive nested pcr assay targeting fragment highly repetitive retrotransposon sjchgcsi detect japonicum dna sera experimental mice meanwhile detection efficacy nested pcr compared two conventional methods field monitoring schistosomiasis elisa iha nested pcr assay could detect specific dna day post infection sera mice cercariae infection elisa iha show negative results even weeks post infection mice cercariae infection results demonstrated dna based assay sensitive make early diagnosis japonicum infection sentinel mice models improve early warning ability schistosomiasis surveillance system published elsevier inc
akt pathway plays important role various aspects stem cell biology however consequences constitutive activation akt mesenchymal stromal cells mscs fate hematopoietic stem cells hscs unknown show bone marrow derived mscs expressing constitutively active akt expand hscs severely affect functionality conversely stromal cells silenced akt limit hsc proliferation boost functionality effects related differential modulation several important regulatory genes cocultured hscs stromal cells detrimental effect stromal cells constitutively activated akt involved dynamin dependent endocytosis whereas salutary effect stromal cells devoid akt mediated via gap junctions constitutive activation akt led deregulated formation gap junctions stromal cells consequently exhibited strikingly increased intercellular transfer molecular cargo hscs conversely stromal cells silenced akt exhibited normal intercellular arrangement gap junctions appositional membrane areas show aberrant intercellular transfer micro vesicles isolated conditioned media stromal cells mimicked effect cells also showed stronger effects perhaps first report demonstrating akt signaling prevailing mscs regulates hsc functionality various intercellular communication mechanisms findings could important implications use mscs regenerative medicine
human metabolism monoterpene cyclic ether cineole investigated vitro vivo vitro biotransformation cineole investigated human liver microsomes recombinant cytochrome enzymes coexpressed human cyp reductase escherichia coli cells besides already described metabolite alpha hydroxy cineole found another metabolite produced high rates structure identified comparison mass spectrum retention time reference compounds alpha hydroxy cineole clear correlation concentration metabolites incubation time enzyme content respectively cypa antibody significantly inhibited alpha alpha hydroxylation catalyzed pooled human liver microsomes kinetic analysis revealed michaelis menten max oxidation cineole position three nmol min nmol cytochrome nmol min nmol cytochrome respectively knowledge first time alpha hydroxy cineole described human metabolite cineole confirmed vitro results investigation human urine oral administration cold medication containing cineole human urine found analysis described metabolites alpha hydroxy cineole alpha hydroxy cineole alpha elsevier rights reserved
recent work demonstrated importance post transcriptional gene regulation toxic responses present study used two rat models investigate mrna translation liver following xenobiotic induced toxicity combining polysome profiling genomic methodologies able assess global changes hepatic mrna translation dio iodothyronine deiodinase type iii identified gene exhibited specific translational repression functional role number relevant canonical pathways western blot analysis indicated repression led reduced protein expressed dio levels enhanced time increased dose using northern blotting techniques qrt pcr quantitative reverse transcription pcr confirmed reduction dio mrna suggesting translational repression dio important determinant reduced protein expression following liver damage finally show drug induced hepatotoxicity appears cause localized disruptions thyroid hormone levels liver plasma suggest leads reduced translation dio mrna results decreased production may therefore possible important mechanism liver upon early signs damage act rapidly maintain energy equilibrium thereby avoiding global disruption hypothalamic pituitary thyroid axis
obesity diabetes metabolic diseases increasing prevalence dynamics gene expression associated diseases fundamental identifying genes involved related biological processes qpcr sensitive technique mrna quantification commonly used method gene expression studies however reliability results directly influenced data normalization reference genes major normalization method used work aims identify reference genes qpcr adipose tissues mice type diabetes obesity selected genes commonly used reference genes expression genes adipose tissues mice analyzed context three different experimental protocols untreated animals high fat diet animals streptozotocin treated animals gene expression stability analyzed using four different algorithms data indicate tata binding protein stably expressed across adipose tissues control animals gene also useful reference brown adipose tissues control obese mice analyzed mitochondrial atp synthase complex gene exhibits stable expression subcutaneous perigonadal adipose tissue control obese mice moreover gene best reference qpcr normalization adipose tissue streptozotocin treated animals results show perfect stable gene suited use experimental conditions conclusion selection appropriate genes prerequisite ensure qpcr reliability must performed separately different experimental protocols elsevier masson sas rights reserved
nearly known populations scarce fritillary euphydryas maturna linnaeus declining western central europe order identify possible reasons vulnerability surveyed population genetics butterfly species using multi locus genotype data females target species lay lots eggs one two batches pre hibernation caterpillars live feed gregariously nest consequence random unfavourable event eliminate offspring particular female resulting strong genetic drift effect combined inbreeding thus hypothesis regarding genetic composition scarce fritillary populations suggests random fluctuations allele frequencies generation generation populations exhibit small effective sizes relatively high level heterozygote deficiency majority individuals population composed offspring females order test hypotheses fine scale genetic structure studied two subpopulations hungarian scarce fritillary population consecutive years generations using enzyme polymorphism data results supported assumptions detected random fluctuation frequency several alleles small effective population size index heterozygote deficiency indicated considerable level inbreeding samples furthermore average values relatedness also fairly high able identify putative sib families total two subpopulations based estimation individual gametic phases thus present study suggests intrinsic factors specific life history might increase sensitivity species various threatening factors habitat loss fragmentation result vulnerability given species
leucine aminopeptidases laps associated tumor cell proliferation invasion angiogenesis aimed examine biological function lap esophageal squamous cell carcinoma escc lap expressions examined human escc tissue cell lines eca cells recombinant psilencer lap shrna transfected eca cells silence lap expression effects lap silencing eca cell proliferation vitro evaluated flow cytometry profiling used detect differentiate cell cycle distribution lap silenced eca cells wound healing assay transwell assay used examine activities migration invasion lap silenced eca cells overexpressed lap cells find corresponding results lap expression level abundance escc tissue lap silencing significantly reduced eca cell proliferation colony formation knockdown lap resulted cell cycle arrest phase moreover expression lap favors cell proliferation invasiveness also confirms contribution malignant development came conclusion lap contributed escc progression overcoming cell cycle arrest proliferative migration effects lap might contribute malignant development human escc
methods expression cyr kappa pathway molecules examined western blotting ccl expression assessed northern blotting elisa interaction kappa cyr promoter evaluated electrophoretic mobility shift assay rat cia osteoblastic expression cyr examined immunohistochemistry disease progression assessed clinical radiographic histological examinations results egcg inhibited cyr expression stimulated cytokines primary human osteoblasts human osteoblastic cell line uos uos oncostatin osm induced kappa alpha degradation mtor rictor akt pathway egcg attenuated action electrophoretic mobility shift assay revealed osm enhanced kappa dna binding reduced egcg possibly abrogating nucleus localization cyr enhanced osm induced expression ccl moreover egcg diminished osm stimulated ccl expression least partially via suppressing cyr induction distribution macrophages cyr osteoblasts osteolytic areas obvious cia model clinical radiographic immunohistochemical analyses revealed administration egcg markedly diminished severity cia macrophage infiltration number cyr synthesizing osteoblasts conclusion modulating mtor rictor akt kappa pathway egcg attenuated cyr production osteoblastic cells turn diminished macrophage chemotaxis data support therapeutic potential egcg arthritis
drugs targeting mdm hydrophobic pocket activate however agents act allosterically agonist effects mdm protein interaction landscape dominant independent mdm drug responsive binding proteins stratified used variable differential expression mdm protein function cell density identify nutlin responsive mdm binding proteins perturbed independent cell density using swath dihydrolipoamide dehydrogenase subunit mitochondrial pyruvate dehydrogenase complex one two nutlin perturbed proteins identified fours hour posttreatment two cell densities immunoblotting confirmed dihydrolipoamide dehydrogenase induced nutlin depletion mdm using sirna also elevated dihydrolipoamide dehydrogenase nutlin treated cells mitotracker confirmed nutlin inhibits mitochondrial activity enrichment mitochondria using tom immunobeads tmt labeling defined key changes mitochondrial proteome nutlin treatment proximity ligation identified rearrangements cellular protein protein complexes situ response nutlin reduction dihydrolipoamide dehydrogenase dihydrolipoamide acetyltransferase protein complexes highlighted disruption pyruvate dehydrogenase complex coincides increase mdm dihydrolipoamide dehydrogenase complexes nucleus enhanced nuclear export inhibitor leptomycin data suggest one therapeutic impact mdm drugs might early perturbation specific protein protein interactions within mitochondria methodology forms blueprint biomarker discovery identify rearrangements mdm protein protein complexes drug treated cells
pisum sativum short chain alcohol dehydrogenase like protein sad gene family consists least three members sad expression two genes sad escherichia coli pichia pastoris resulted full length soluble proteins purified sad used antigen antibody production rabbits antibodies recombinant sad protein highly expressed two isoforms shown tetramer consisting dinner dimers sad genes transiently expressed plants short exposures ultraviolet radiation judged northern blotting turn mrna accumulation leads formation sad protein leaf stem tissue upon prolonged irradiation elsevier inc rights reserved
described enzymology induced fit lock key models used explain enzymic specificity substrate previously authors studied substrate specificity eisenia fetida protease ffp showing interaction protease substrates underwent induced fit followed lock key model needs investigating whether model suitable enzymes reactions substrate induced eisenia fetida protease efp subtilisin sub lactate dehydrogenase ldh substrates shown efp sub could recognize chromozym incubated chromozym cth although two proteases natively able react cth reaction followed induced fit lock key pattern contrast two proteases still able react cth even though incubated neither earthworm protease subtilisin could recognize cth treatment turn still suggesting reactions followed induced fit lock key procedure furthermore activity ldh lactate significantly decreased enzyme incubated pyruvate activity conversion pyruvate lactate significantly affected prior incubation lactate suggests pyruvate induced complementary conformation ldh stable lactate induced conformation
kda protein involved sugar translocation scutellum germinating barley seeds present study carried provide genomic characterization gene terms copy number chromosome mapping genetic mapping expression analysis germinating sculletum two major triticeae crops barley wheat relatives southern blotting showed variable copy number different restriction fragment sizes found among hordeum accessions low copy number found conserved triticum aegilops accessions genetic physical mapping study identified gene duplicated wild cultivated barley chromosomes tandem duplication chromosomes contrast wheat located chromosome durum wheat distal portion long arms chromosomes bread wheat northern blotting showed remarkably high accumulation transcript germinating scutellum cultivated wild barley whereas accumulation detected diploid tetraploid hexaploid wheat accessions present study suggests simple scenario ancestral encoded distal portion ancestral chromosome homoeologous chromosome beside polyploidy dispersed tandem duplications could trigger generation family hordeum lineage ancestral conserved homoeologous chromosomes wheat lineage
soil salinity major environmental stress limiting plant growth productivity reported previously isolation apocynum yenetum dead box helicase avdh expressed response salt exposure report overexpression avdh driven constitutive cauliflower mosaic virus promoter cotton plants confers salinity tolerance southern northern blotting analyses showed avdh gene integrated cotton genome expressed study growth transgenic cotton expressing avdh evaluated saline conditions growth chamber saline field trial transgenic cotton overexpressing avdh much resistant salt wild type plants grown growth chamber lower membrane ion leakage along increased activity superoxide dismutase avdh transgenic lines suggested characteristics may prevent membrane damage increases plant survival rates saline field transgenic cotton lines expressing avdh showed increased boll numbers boll weights seed cotton yields compared wild type plants especially high soil salinity levels study indicates transgenic cotton expressing avdh promising option increasing crop productivity saline fields
staphylococcus aureus important food borne opportunistic pathogen frequently causes severe blood tissue infections even fatal illnesses although aureus extensively studied livestock poultry foods china limited information reported aquatic products accordingly study aimed characterize aureus aquatic products purchased retail markets china total aquatic food samples collected provincial capitals china results showed samples positive aureus qualitative quantitative analyses contamination levels samples ranged mpn six samples exceeded mpn total aureus isolates positive samples selected evaluate virulence factors antibiotic resistance molecular characteristics aureus isolates evaluated presence virulence genes multiplex polymerase chain reaction hemolysin fibronectin binding protein fnba aureus enterotoxin see panton valentine leucocidin pvl identified major genes genes formed different profiles major profile identified pvl fnba antimicrobial susceptibility isolates analyzed disk diffusion method results showed high resistance lactams macrolides tetracyclines susceptibility linezolid vancomycin addition sequence types sts obtained via multilocus sequence typing including seven novel sts among common sts isolates mecc negative nine isolates carrying meca evaluated staphylococcal cassette chromosome mec sccmec typing sccmeciii sccmeciv types isolates sccmeciii showed high prevalence multidrug resistant results showed aquatic products could vehicle transmission virulence genes multidrug resistant aureus representing potential public health risk sts identified study indicated genetic diversity aureus thereby providing important basic data dissemination aureus aquatic products
many studies focused identifying neural behavioral characteristics decoding based reading disorder aka developmental dyslexia etiology remains largely unknown understudied brain plays intermediate role genetic factors behavioral outcomes promising address causality neural perspective current study part two part review discuss neuroimaging approaches addressing causality issue review results studies employed approaches assume neural signature associated etiology would manifest across comparisons different languages experience independent appear comparisons reading matched controls present pre post intervention found risk pre reading children associated genetic risk discuss five characteristics turn summarize studies examined available literature provides evidence anomalies left temporo parietal cortex possibly occipito temporal cortex may closely related etiology improved understanding etiology help improve accuracy early detection enable targeted intervention cognitive processes amenable change leading improved outcomes risk affected populations
molecular basis control cytoskeleton arf gtpase activating protein agap characterized agap composed protein like gld pleckstrin homology arf gap ankyrin repeat domains kifa identified screens proteins bind agap gld domains agap bound motor domain kifa kifa increased gap activity agap protein composed gld domains agap increased atpase activity kifa knockdown kifa agap slowed cell migration accelerated cell spreading effect kifa spreading could rescued expression kifa gfp flag agap kifc gfp effect agap could rescued flag agap agap mutant bind kifa efficiently arfgap kifa gfp taken together results support hypothesis kifaagap complex contributes control cytoskeleton remodeling involved cell movement
functional disorders proteasome severe impact innate immune system characterized autosomal recessive mode inheritance novel type interferonopathy considered spectrum diseases proteasome associated autoinflammatory syndromes praas accumulation ubiquitinated proteins induction type interferon ifn genes seem play role pathogenesis typical clinical manifestations lipodystrophy skin joint muscle involvement accompanied remarkable variability associated symptoms article provides overview currently known molecular alterations well clinical similarities differences praas furthermore reported effects immunosuppressive therapy approaches used far summarized
anticipation ethical issues may arise clinical use genomic technologies crucial envision future implementation manner sensitive local contexts yet populations low middle income countries underrepresented studies aim explore stakeholders perspectives use technologies within framework research project entitled personalized medicine treatment epilepsy sought increase inclusiveness widening reach survey inviting neurologists around world share views practices regarding use whole genome sequencing clinical neurology associated ethics discuss herein compelling scientific ethical reasons led attempt recruit neurologists worldwide despite lack many low middle income countries access genomic technologies recruitment procedures results presented discussed well barriers faced conclude inclusive recruitment remains challenging albeit necessary legitimate endeavour
channel catfish ictalurus punctatus cell receptors tcr gamma delta identified mining expressed sequence tag databases full length sequences obtained race pcr protocols cdnas tcr chains encode typical variable diversity joining constant regions three tcr gamma families seven tcr gamma sequences three tcr gamma sequences identified sequencing cdna primer walking bacterial artificial chromosomes bacs confirmed trg locus contained seven trgj segments indicated locus consists gamma gamma gamma gamma gamma gamma gamma gamma gamma gamma gamma gamma gamma comparison tcr delta two families four tcr delta sequences one tcr delta sequence one tcr delta sequence identified cdna sequencing importantly finding catfish tcr delta cdnas contain tcr alpha delta rearrangements tcr alpha cdnas contain delta alpha rearrangements strongly implies catfish tra trd loci linked finally primer walking bacs southern blotting suggest catfish four trdd gene segments single trdj trdc gene vertebrates three reading frames catfish trdd segments used functional rearrangements one trdd segment used single rearrangement expected catfish tcr delta cdr regions longer diverse tcr gamma cdr regions group utilize nucleotide additions contain nucleotide deletions catfish tcr gamma rearrangements
little known consequences spartina alterniflora invasion soil sulfate reducing bacteria srb study compared abundance diversity community structure srb alterniflora native plant communities along successional gradient bare mudflat young mature alterniflora suaeda salsa phragmites australis coastal salt marshes eastern china quantitative polymerase chain reaction dissimilatory sulfite reductase dsrb gene applied assess srb abundance diversity composition srb analyzed pyrosequencing partial dsrb gene found alterniflora significantly higher abundance diversity srb native plant species plant covers desulfobacteraceae largest soil srb group relative abundance followed desulfobulbaceae alterniflora showed higher relative abundance desulfobacteraceae native species notably alterniflora invasion decreased relative abundance srb branch clustering thermophilic thermodesulfovibrio yellowstonii conclusion alterniflora invasion eastern coast china greatly increased abundance diversity srb communities altered structure might influence carbon mineralization inhibit production methane china coastal marshes
model predicts human metabolism disposition drug candidates would value early drug development study chimeric upa scid mouse model evaluated three structurally distinct compounds benzophenone tetrahydroisoquinoline fluoropyrrolidine human metabolism disposition characterized human metabolite profiles plasma urine compared chimeric upa scid control upa scid mice exhibited primarily hepatic metabolism chosen probes assess human metabolites would likely circulate systemically exhibited combination hepatic extrahepatic metabolism renal excretion drug related material similar fold greater humans mice thus chosen probe assess chimeric upa scid mouse would predict urinary excretion human metabolites observed human metabolism disposition well represented somewhat represented minimally represented collectively results studies suggest limitations prediction human metabolism disposition exist humanized chimeric mouse models potentially represent informative new tools drug discovery development
arabinogalactan proteins agps large family highly glycosylated hydroxyproline rich glycoproteins play important roles plant growth development signal transduction cdna encoding putative classical agp named ghhl isolated cotton fiber cdna libraries deduced protein contains copies repetitive motif proline proline proline serine alanine threonine serine northern blotting analysis quantitative pcr results showed preferentially expressed days post anthesis dpa fibers also developmentally regulated promoter fragment isolated cotton gossypium hirsutum genome walking pcr expression beta glucuronidase gus gene ghhl promoter examined transgenic arabidopsis plants petiole pedicel stained staining detected tissues subcellular localization indicated ghhl localized plasma membrane cytoplasm data understanding ghhl well shed light functional insight ghhl cotton
currently known methods enzymatic beta lactam synthesis well enzymes heterogeneous biocatalysts used purpose presented published reports advances field enzymatic synthesis selected antibiotics belonging groups penicillin acids cephalosporin acids summarized present review key conditions parameters biocatalytic processes biocatalyst form concentration precursor compounds solvent type temperature etc analyzed compared guidelines optimization beta lactam synthesis given present review may use wide range readers well enzymology biotechnology experts
introduction goal replantation dental avulsion maintain tooth socket presence vital periodontal ligament cells root surface replanted tooth immunologic status patient factors protect root resorption known dental constituents play active role root resorption inducing specific non specific immune responses however little information exists regarding influence acquired immune response replantation therefore aim study evaluate year outcome replantation non atopic atopic patients methods clinical radiographic examinations performed replanted teeth year period evaluation atopy based patients personal family histories skin prick test results tests used assess association atopy outcome replanted teeth results significant differences year year outcomes replanted teeth atopic non atopic patients teeth extracted inflammatory replacement root resorption years conclusions atopic may offer advantage loss fewer teeth replacement resorption whereas non atopic may create advantage loss fewer teeth inflammatory root resorption first years trauma
background linked intellectual disability common cause inherited cognitive deficit affecting mostly males several genetic causes implicated condition hampered establishment accurate diagnosis developed multiplex pcr assay mutational hotspot regions fmr aff arx genes methods multiplex pcr validated cohort males selected include known alleles fmr repetitive region five full mutations cggs ten premutations cggs eighty five normal range cggs sequencing southern blotting used confirm results depending allele class cohort exception one sample showing aff intermediate sized allele samples normal ccgs arx variant found besides dup validated assay applied samples males females results normal allelic range fmr aff genes well nature arx variants identified similar genders rate homozygosity observed female samples fmr aff alleles comparable published others two fmr premutations identified male cggs female case cgg cgg well several fmr aff intermediate sized alleles one aff premutation ccgs two putative full expansions picked male subjects seems relevant considering rarity reported aff mutations found absence family history conclusions developed robust multiplex pcr used screen mutational hotspot regions fmr aff arx genes moreover strategy led identification variants three genes representing improvement allele sizing also achieving differential diagnosis although distinction females truly homozygous second pre full mutation sized allele well definitive diagnosis requires specific downstream technique use multiplex pcr initial screening cost effective approach widens scope detection
bacillus thuringiensis known successful microbial insecticide different orders insect pests agriculture medicine moreover toxin genes also efficiently used enhance resistance insect pests genetically modified crops light scientific advantages new molecular biology technologies recently new potentials explored new environmental features include toxicity nematodes mites ticks antagonistic effects plant animal pathogenic bacteria fungi plant growth promoting activities pgpr bioremediation different heavy metals pollutants biosynthesis metal nanoparticles production polyhydroxyalkanoate biopolymer anticancer activities due parasporins review comprehensively describes recent advances whole genome studies last updated known toxins functions application cry genes plant genetic engineering moreover review thoroughly describes new features make suitable cell factory might used production different novel valuable bioproducts
paper analyse local stability gene regulatory network immunotherapy cancer modelled nonlinear time delay systems numerically generated kernel using sum squares decomposition multivariate polynomials used construction appropriate lyapunov krasovskii functional stability analysis networks around equilibrium point analysis translates verifying equivalent lmi conditions delay independent asymptotic stability second order model gene regulatory network taking consideration multiple commensurate delays established case cancer immunotherapy predator prey type model adopted describe dynamics cancer cells immune cells contributing predator prey population respectively delay dependent asymptotic stability cancer free equilibrium point proved apart system control point view case gene regulatory networks stability analysis dynamics aids mimicking gene networks synthetically using integrated circuits like neurochips learnt biological neural networks case cancer immunotherapy helps determine long term outcome therapy thus aids oncologists deciding upon right approach
recent years short chain fatty acid phenylbutyrate emerged promising drug various clinical conditions fact food drug administration approved urea cycle disorders since potent less toxic metabolite phenylacetate pro drug initially assumed metabolic pathway however remained unclear therefore set identify enzymes involved beta oxidation used cells deficient specific steps fatty acid beta oxidation ultra hplc measure enzymes able convert downstream products show first step oxidation catalyzed solely enzyme medium chain acyl coa dehydrogenase second hydration step catalyzed three mitochondrial enoyl coa hydratase enzymes short chain enoyl coa hydratase long chain enoyl coa hydratase methylglutaconyl coa hydratase enzymes involved third step include short long chain hydroxyacyl coa dehydrogenase oxidation completed one enzyme long chain ketoacyl coa thiolase jlr taken together enzymatic characteristics degradative pathway may lead better dose finding limiting toxicity drug
congenital causes erythrocytosis easily identified due improvement molecular characterization many among causes hemoglobins high oxygen affinity take large place aim work reevaluate diagnostic approach disorders assess current practices sent questionnaire expert laboratories diagnosis hemoglobinopathies france belgium parallel gathered methods used diagnosis hemoglobins high oxygen affinity indexed international database hbvar even though remain rare cause erythrocytosis positive diagnosis every year questioned specialized laboratories hemoglobins high oxygen affinity increasingly suspected clinicians phenotypic enables finding questioned laboratories variants diagnosed last years among hemoglobin variants high oxygen affinity indexed international database could diagnosed phenotypic techniques direct measure hemox analyzer included diagnostic approach half laboratories poor availability apparatus comparatively estimation blood gas analyzers venous blood much convenient attractive method due lack proof effectiveness diagnosis hemoglobins high oxygen affinity requires investigations beta alphaglobin genes analysis molecular biology techniques essential either allows quick definite identification variant definitely excludes diagnosis thus systematically performed first second step method according laboratory practice
parabens used preservatives personal care consumer products food pharmaceuticals use controversial possible endocrine disrupting properties study investigated metabolism urinary excretion methyl paraben mep iso butyl paraben iso bup butyl paraben bup oral dosage deuterium labeled analogs volunteer received one dosage per investigated paraben separately least weeks apart consecutive urine samples collected addition parent parabens free conjugated already used biomarkers internal exposure known non specific metabolites hydroxybenzoic acid phba hydroxyhippuric acid phha identified new oxidized metabolites hydroxy groups alkyl side chain bup iso bup species oxidative modifications aromatic ring mep represented dose excreted urine iso bup represented bup additionally iso bup excreted iso bup bup bup less excreted ring hydroxylated metabolites cases phha identified major non specific metabolite phba represented parabens majority oral dose captured metabolites excreted first complementary parent parabens excreted urine alkyl chain oxidized metabolites butyl parabens introduced valuable contamination free biomarkers exposure
million nutritional supplements market growing every year attests consumer awareness interests health benefits attributed supplements years importance polyunsaturated fatty acid pufa consumption human health established fda recently approved use pufas supplements additionally market pufa ingredients grew last year affirms popularity public awareness benefits pufas essential normal human growth however minor quantities beneficial pufas eicosapentaenoic acid epa docosahexaenoic acid dha synthesized human metabolism rather pufas obtained via dietary nutritional supplementation modified beneficial metabolites vast literature base available health benefits biological roles pufas metabolism however information dietary sources palatability foods incorporated pufas limited dha epa added many foods commercially available infant pet formulae also supplemented animal feed incorporate consumer dairy meat poultry products chief sources epa dha fish oils purified preparations microalgae added foods impart fishy flavor considered unacceptable fishy flavor completely eliminated extensively purifying preparations pufa sources pufa lipid autoxidation considered main cause fishy flavor individual oxidation products identified thus far unsaturated carbonyls appear contribute fishy flavor odor alternatively various compound classes free fatty acids volatile sulfur compounds known impart fishy flavor foods identification causative compounds reduce eventually eliminate fishy flavor important consumer acceptance pufa fortified foods
methods described herein activation naive cells suspension adherence coverslips confocal microscopy analysis allow spatial localization visualization gangliosides involved cell activation complement expression profiling experiments flow cytometry western blotting real time pcr quantification ganglioside expression flow cytometry cellular localization microscopy obtained use anti ganglioside antibodies high affinity specificity nonetheless adequate handling cells suspension involves treatment culture plates promote necessary adherence required fluorescence confocal microscopy acquisition work describe protocol determining ganglioside expression colocalization tcr naive cell activation also real time pcr experiments using cells described determination synthase genes demonstrating gene analysis experiments performed low number cells without need additional low input rna kits
biolubricants castor oil produced enzymatically transesterification higher alcohols using lipase mixture immobilized mucor miehei rmim immobilized candida antarctica lipase novozym low water conditions conversions range optimized conditions society biotechnology japan rights reserved
characterized expression micrornas selected microrna precursors within several synaptic fractions adult mouse forebrain including synaptoneurosomes synaptosomes isolated post synaptic densities psds using methods microrna microarray real time qrt pcr northern blotting immunopurification using anti psd antibody majority brain micrornas especially micrornas known expressed pyramidal neurons detectably expressed synaptic fractions subset micrornas significantly enriched synaptic fractions relative total forebrain homogenate microrna precursors also detectable synaptic fractions levels comparable whole tissue whereas mature micrornas predominantly associated soluble components synaptic fractions microrna precursors predominantly associated psds seven micrornas examined significant correlation relative synaptic enrichment precursor relative synaptic enrichment corresponding mature microrna findings support proposal micrornas formed least part via processing microrna precursors locally within dendritic spines dicer expressed psds enzymatically inactive conditions activate calpain cause liberation thus propose synaptic stimulation may lead local processing microrna precursors proximity synapse
background variable ventilation shown improve pulmonary function reduce lung damage different models acute respiratory distress syndrome nevertheless variable ventilation tested pneumonia theoretically periodic increases tidal volume airway pressures might worsen impairment alveolar barrier function usually seen pneumonia could increase bacterial translocation bloodstream investigated impact variable ventilation lung function histologic damage well markers lung inflammation epithelial endothelial cell damage alveolar stress bacterial translocation experimental pneumonia methods thirty two wistar rats randomly assigned receive intratracheal pseudomonas aeruginosa saline sal group animals anesthetized ventilated either conventional volume controlled vcv variable volume controlled ventilation mean peep cmh fio tidal volume varied randomly coefficient variation gaussian distribution additional animals assigned receive either sal group ventilated serve controls results sal improved oxygenation lung elastance compared vcv sal decreased interleukin expression compared vcv median interquartile range increased surfactant protein expression compared compared vcv reduced perivascular edema septum neutrophils necrotizing vasculitis ultrastructural lung damage scores blood colony forming unit cfu counts comparable compared vcv increased expression amphiregulin cytokine induced neutrophil chemoattractant cinc respectively angiopoietin expression lower compared animals conclusion rat model pneumonia improved pulmonary function reduced lung damage compared vcv without increasing bacterial translocation
glioma common primary malignant tumor central nervous system results poor prognosis outcome aggressive progression disease growth resistance surgery chemotherapy radiotherapy mir small non coding single stranded rna molecule previously studied settings human tongue cancer hepatocellular carcinoma colorectal cancer however detailed data formally demonstrate contribution mir glioma development missing similarly relatively little known relationship mir vascular endothelial growth factor matrix metalloproteinase glioma progression study found mir expression significantly decreased glioma tissues glioma cell lines compared non cancerous brain tissues quantitative real time polymerase chain reaction addition mir inhibited glioma cell proliferation invasion promoted glioma cell apoptosis vivo vitro interestingly expression levels mir higher glioma cells messenger rna protein expression levels vascular endothelial growth factor matrix metalloproteinase lower glioma cells determined quantitative real time polymerase chain reaction western blot assay immunohistochemistry contrast downregulation expression levels mir augmented messenger rna protein expression levels vascular endothelial growth factor matrix metalloproteinase findings suggested mir inhibited glioma proliferation invasion regulating vascular endothelial growth factor matrix metalloproteinase signaling pathway vitro vivo
bsmv barley stripe mosaic virus particles obtained pure state infected host plant tissues hordeum vulgare three genomic parities alpha beta gamma amplified pcr using specific primers particle cloned partial sequence alpha beta gamma segments determined egyptian isolate barley stripe mosaic virus bsmv alignment nucleotide sequences known strains virus bsmv type strains china generation phylogenetic trees performed low level homology detected comparing alpha segments strains thus bsmv alpha beta segments separate clusters however gamma segments bsmv showed high level homology especially strain bsmv formed distinct cluster northern blotting pure bsmv virus vulgare infected tissue compared using alpha specific probe western blotting using antibodies specific coat protein triple gene block tgb protein encoded beta segment still indicated high level similarity proteins produced bsmv ael suggest bsmv isolate distinct strain bsmv reflects genetic evolutionary divergence among bsmv strains members hordeivirus group
inclusion compounds iron lactate three different cyclodextrins cds studied means experimental theoretical data importance iron human metabolism effort necessity minimum concentration human life malnutrition one great problem social politics many countries world possibility development novel medicines iron species stable look increase efficiency kind aid kinetics measurements confirm possibility stop oxidation reaction first indication efficient molecular encapsulation diffusion coefficient measurements carried taylor aris diffusion technique decrease diffusion coefficients measured iron lactate alone forming inclusion complexes obtained hosts molecules used molecular mechanics calculations performed elucidate perfect arrange iron lactate inside cds cavity great differences obtained binding energy different hosts using software hyperchem amber opls forced fields iron atom two chemical environments vacuum addition water molecules solvent treatment decisive order stability order beta gamma alpha order solubility water results contained work confirm possibility protect iron lactate oxidation elsevier science rights reserved
chloroplast development regulated many biological processes however processes fully understood leaf variegation mutants used powerful models elucidate genetic network chloroplast development since degree leaf variegation regulated developmental environmental cues thylakoid formation thf mutant unique variegation leaves cotyledons reported new suppressor gene thf leaf variegation designated sot map based cloning dna sequencing results showed single nucleotide mutation detected second exon gene encoding ribosomal protein small subunit prps sot resulting amino acid change partial loss prps function however sot unable rescue thf phenotype low photosystem activity addition identified two dna insertion mutants defective plastid specific ribosomal proteins psrps psrp psrp genetic analysis showed knockdown psrp expression psrp expression suppressed leaf variegation northern blotting results showed precursors plastid rrnas accumulated prps psrp indicating mutations prps psrp cause defect rrna processing consistently inhibition plastid protein synthesis spectinomycin led increased levels plastid rrna precursors wild type plants suggesting rrna processing plastid ribosomal assembly coupled taken together data indicate downregulating expression specific plastid ribosomal proteins suppresses thf leaf variegation provide new insights role thf plastid gene expression
bioligninolysis involves living organisms products degradation lignin highly resistant plant originated polymer three dimensional network dimethoxylated syringyl monomethoxylated guaiacyl non methoxylated hydroxyphenyl phenylpropanoid acetylated units major repository aromatic chemical structures earth lignin bears paramount significance removal owing potential application bioligninolytic systems industrial production early reports illustrating discovery cloning ligninolytic biocatalysts fungi truly landmark field enzymatic delignification however enzymology bacterial delignification hitherto poorly understood moreover lignin degrading bacterial genes still unknown need exploration review deals current knowledge ligninolytic enzyme families produced fungi bacteria mechanisms action genetic regulation reservations render attractive candidates biotechnological applications
propose computationally efficient probabilistic modeling methodology estimate adverse effects humans exposure contaminated groundwater work aligned standard suggested regulatory agencies allows propagate uncertainty hydrogeological toxicological behavioral parameters final health risk endpoint problem consideration consists contaminated aquifer supplying water population contamination stems continuous source feeds steady plume constitutes hazard source scenario particularly suited napl pollutants erratic displacement contaminant plume groundwater due spatial variability hydraulic conductivity characterized within lagrangian stochastic framework enables complete probabilistic characterization contaminant concentration environmentally sensitive location following probabilistic characterization flow transport quantify adverse health effects humans dose response assessment involves estimation uncertain effects exposure given contaminant accounting exposed individual metabolism model integrates groundwater transport exposure human metabolism comprehensive probabilistic framework allows assessment risk probability novel simple analytical solution aside computational efficiency analytical features framework allows assessment uncertainty arising hydrogeological parameters elsevier rights reserved
investigate whether activation liver receptors lxrs inhibits amyloid beta beta induced inflammatory senescent responses human retinal pigment epithelial rpe cells confluent cultures human primary rpe arpe cells pretreated synthetic agonist lxr vehicle incubated beta beta optimum concentrations beta determined cell viability assay pro inflammatory cytokines mcp detected real time polymerase chain reaction pcr enzyme linked immunosorbent assay elisa expression localization aging protein pinka analyzed western blotting immunofluorescence expressions lxrs one target genes atp binding cassette transporter abca examined real time pcr western blotting phosphorylated transcription inhibition factor kappa alpha kappa alpha assessed western blotting negative linear relationship beta concentration cell viability evident indicating beta decreased arpe cell viability dose dependent manner beta enhanced expression mcp well rpe cell lines mrna protein levels whereas counteracted detrimental effects upregulated expression lxr alpha target gene abca affect expression lxr beta meanwhile inhibited phosphorylation kappa alpha mediated beta stimulation activation lxr alpha abca axis may alleviate beta induced inflammatory senescent responses rpe cells beneficial effect appears associated inhibition kappa signaling pathway
objectives describe clinical characteristics workers exposed hymenoptera stings ascertained diagnosis hymenoptera venom allergy hva specific role occupational exposure iii effect venom immunotherapy vit reducing severity allergic episodes workers exposed repeated stings hymenoptera management occupational consequences caused allergic reactions due hymenoptera stings methods observational study including patients referred regional reference hospital liguria italy ascertained diagnosis hva treated vit performed structured questionnaire administered patients investigate occupational features allergic reactions graded according standard systems patients first episode stings vit results one hundred four patients referred complete data set patients allergic reaction occurred work activities performed outdoor previously stung hymenoptera work receiving vit stung occupational activity grades reaction developed vit treatment resulted clinically less severe occurred first sting value conclusion findings confirmed clinical relevance hva described occupational features outdoor workers sensitization stressing importance early identification proper management professional categories recognized high risk hymenoptera stings occupational physician supported specialists recommend appropriate diagnostic procedures prescription vit resulted effective treatment prevention episodes severe reactions workers proven hva
background aims resveratrol investigated dietary compound studies aimed linking wine consumption human health extremely minor component beverage generally studied vitro unconjugated aglycone concentrations largely exceeding found human circulatory system dietary intake moreover following intestinal absorption trans resveratrol glucoside naturally present wine food sources converted sulphate glucuronide metabolites estrogenic activity previously documented resveratrol yet nothing known activity blood circulating metabolic derivatives methods results using yeast two hybrid detection system relying interaction ligand binding domain human oestrogen receptors beta human coactivator tif systematically examined oestrogen agonist antagonist activities two main resveratrol forms present planta trans resveratrol trans resveratrol glucoside three main metabolites found human plasma trans resveratrol sulphate trans resveratrol glucuronide trans resveratrol glucuronide resveratrol sulphate found display fairly strong oestrogen receptor alpha preferential antagonistic activity confirmed human breast adenocarcinoma cell line containing luciferase reporter gene control oestrogen responsive promoter conclusions show first time resveratrol sulphate neither metabolites endowed anti estrogenic activity human metabolism phenolic substances plays pivotal role modulating biological effect elsevier rights reserved
cluster biogenesis essential pathway coordinated network protein protein interactions whose functions include desulfurase activity substrate delivery electron transfer product transfer effort understand intricacies pathway developed vitro assay follow ferredoxin role electron transfer cluster assembly previously assays relied upon non physiological reducing agents dithionite dithiothreitol assess function addressed shortcoming using electron transfer nadph ferredoxin nadp reductase reduce ferredoxin results show trio electron transfer partners sufficient sustain reaction vitro studies albeit rate slower compared dtt mediated cluster assembly also show despite overlapping cyay protein binding iscs fdx interfere inhibitory activity protein suggest explanations observations important consequences understanding mechanism cluster formation cofactor dependent proteins evolution chemical diversity bio applications authors published elsevier
anthropogenic heat emissions ahes contributor global climate change may affect climate air quality many ways gain complete picture ahes mainland china lay groundwork modelling regional climate environment ahes energy consumption human metabolism estimated inventory established gridded distributions profiles temporal variations based top inventory approach using officially published statistical data results indicated total ahe mainland industry transportation buildings human metabolism contributed respectively coal electricity accounted approximately total emissions energy consumption annual average heat flux mainland sharp difference eastern western regions fluxes eastern regions mostly western regions urban built areas typical cities heat fluxes may much higher average larger areas typically ranging region specific profiles temporal variations improve inventory future applied climatic environmental models obtain depth knowledge effects ahes
budding yeast saccharomyces cerevisiae model system investigating biological processes cellular events known dysregulated due shifts carbon sources however comprehensive proteomic alterations thereof fully investigated examined proteomic alterations cerevisiae due adaptation yeast glucose nine different carbon sources maltose trehalose fructose sucrose glycerol acetate pyruvate lactic acid oleate isobaric tag based mass spectrometry techniques forefront global proteomic investigations used tmt plex strategy study multiple growth conditions single experiment sps method orbitrap fusion lumos mass spectrometer enabled quantification yeast proteins across ten carbon sources protein level fdr average proteomes yeast cultured fructose sucrose deviated least cultured glucose expected gene ontology classification revealed major alteration protein abundances occurred metabolic pathways mitochondrial proteins protocol lays groundwork investigation carbon source induced protein alterations additionally data offer hypothesis generating resource future studies aiming investigate characterized uncharacterized genes biological significance investigate proteomic alterations cerevisiae resulting adaptation yeast glucose nine different carbon sources maltose trehalose fructose sucrose glycerol acetate pyruvate lactic acid oleate sps tmtplex analysis used quantitative proteomic analysis showcase technique allows quantification yeast proteins highest number date cerevisiae across growth conditions single experiment expected gene ontology classification proteins major alterations abundances occurred metabolic pathways mitochondrial proteins reflecting degree metabolic stress cellular machinery shifts growth glucose alternative carbon source protocol lays groundwork investigation carbon source induced protein alterations improving depth coverage measuring abundance changes proteins increases understanding difficult study genes model system cerevisiae homology human cell biology submit highly comprehensive dataset hypothesis generating resource targeted studies uncharacterized genes elsevier rights reserved
study conducted determine secretion rate composition lipoproteins secreted hepg cells influenced type fatty acid present incubation medium cells preincubated palmitic oleic elaidic linoleic conjugated linoleic acid cla lipoproteins secreted subsequent incubation period collected analysis secretion rate apolipoprotein apob significantly greater hepg cells preincubated elaidic acid compared preincubated palmitic oleic acid apob secretion greater cells preincubated cla compared preincubated linoleic acid lipid composition secreted lipoproteins also influenced fatty acid treatment resulting significantly smaller lipoprotein particles secreted cells preincubated elaidic acid cla compared secreted cells treated oleic acid linoleic acid respectively results relevant human metabolism following reasons size plasma low density lipoproteins ldls determined least part composition apob containing lipoproteins secreted liver small plasma ldl particles associated increased risk coronary heart disease specific dietary fatty acids affect composition size plasma ldls thereby imparting relative atherogenicity plasma ldls independent ldl cholesterol concentration present study therefore suggests elaidic acid cla promote hepatic secretion small apob containing lipoproteins could lead increased production small plasma ldl particles elsevier inc rights reserved
staphylococcus aureus common cause bovine mastitis responsible main economic loss dairy industry identification putative bovine specific molecular marker genome comparison bovine aureus strain previously sequenced aureus isolates associated human infections using genome viewer annotation tool artemis comparison tool act kegg ncbi blast databases carried led identification unique gene sequences may used molecular marker distinguish bovine human strains distribution genes analyzed collection bovine mastitis strains netherlands human clinical isolates pcr southern blotting four genes within pathogenicity island sapibov sab sab sob sab present majority isolates cattle absent human clinical aureus isolates results suggest gene orf uniformly shared bovine aureus strains could uniformly used diagnostic marker gene elsevier rights reserved
highly polymorphic swine major histocompatibility complex mhc termed swine leukocyte antigen sla associated different levels immunologic responses infectious diseases vaccines transplantation pig breeds known sla haplotypes important genetic resources biomedical research canadian yorkshire landrace pigs represent current specific pathogen free spf breeding stock maintained isolation environment harbin veterinary research institute chinese academy agricultural sciences study identified alleles five polymorphic sla loci sla sla sla drb dqb representing class haplotypes class haplotypes using reverse transcription polymerase chain reaction pcr sequence based typing pcr sequence specific primers methods canadian spf yorkshire landrace pigs official designation alleles assigned sla nomenclature committee international society animal genetics released updated immuno polymorphism database mhc sla sequence database release submissions confirmed unassigned alleles standardized nomenclatures many previously unconfirmed alleles genbank database three class haplotypes appeared novel previously reported pig populations one crossover within class region two class class regions observed resulting three new recombinant haplotypes presence duplicated sla locus confirmed three class haplotypes furthermore also analyzed functional diversities identified frequent sla class molecules study confirmed existence four supertypes using mhccluster method results useful studying adaptive immune response immunological phenotypic differences pigs screening potential cell epitopes developing effective vaccines
subunit vaccines prevention congenital cytomegalovirus cmv infection based glycoprotein clinical trials unclear whether simultaneous vaccination antigens enhances protection undertook evaluation novel bivalent vaccine based nonreplicating lymphocytic choriomeningitis virus rlcmv vectors expressing cytoplasmic tail deleted dct full length human cmv mice immunization dct vector alone elicited comparable binding antibody response superior neutralizing response elicited adjuvanted subunit immunization vector alone elicited robust cell responses comparable immunogenicity combined dct vectors individual monovalent formulations demonstrated demonstrate proof principle bivalent rlcmv based hcmv vaccine congenital guinea pig cytomegalovirus gpcmv infection model used compare rlcmv vectors encoding homologs dct alone combination versus freund adjuvanted recombinant vectors elicited significant immune responses loss immunogenicity noted bivalent formulation combined vaccination rlcmv vectored gpcmv dct conferred better protection maternal viremia subunit either monovalent rlcmv vaccine bivalent vaccine also significantly effective reducing pup mortality monovalent vaccines summary bivalent vaccines rlcmv vectors expressing elicited potent humoral cellular responses conferred protection gpcmv model clinical trials lcmv vectored hcmv vaccines warranted
report case ctx type extended spectrum beta lactamase esbl producing shigella sonnei infection year old korean woman traveled china patient admitted hospital due abdominal pain watery diarrhea fever degrees sonnei isolated stool specimens pathogen found resistant cefotaxime due ctx type esbl insertion sequence ecp found upstream bla ctx gene bla ctx gene transferred sonnei isolate escherichia coli recipient conjugation pulsed field gel electrophoresis southern blotting revealed bla ctx gene located plasmid approximately
time lapse fluorescence microscopy valuable technology cell biology suffers inherent problem intensity inhomogeneity due uneven illumination camera nonlinearity known shading artefacts lead inaccurate estimates single cell features average total intensity numerous shading correction methods proposed remove effect order compare performance different methods many quantitative performance measures developed however little discussion performance measure generally applied evaluation real data ground truth absent paper state art shading correction methods performance evaluation methods reviewed implement popular shading correction methods two artificial datasets four real ones order make objective comparison methods employ number quantitative performance measures extensive validation demonstrates coefficient joint variation cjv applicable measure time lapse fluorescence images based measure proposed novel shading correction method performs better compared well established methods range real data tested
background filarial nematodes wuchereria bancrofti cobbold brugia malayi brug timori partono purnomo dennis atmosoedjono oemijati cross cause lymphatic diseases humans tropics pahangi buckley edeson infects carnivores causes zoonotic diseases humans malaysia wuchereria bancrofti kalimantani palmieri pulnomo dennis marwoto six ten brugia spp described australia southeast asia sri lanka india however origin evolution species wuchereria brugia clade remain unclear investigating diversity filarial parasites malaysia discovered undescribed species common treeshrew tupaia glis diard duvaucel mammalia scandentia methods examined common treeshrews areas nine states federal territory peninsular malaysia filarial parasites filariae found isolated examined morphological characteristics determined partial sequences mitochondrial cytochrome oxidase subunit cox rrna genes polymerase chain reaction pcr products internal transcribed spacer region cloned pgem vector recombinant plasmids used templates sequencing results malayfilaria sofiani uni mat udin takaoka described based morphological characteristics adults microfilariae found common treeshrews jeram pasu kelantan malaysia kimura parameter distance cox gene sequences new species bancrofti based three gene sequences new species forms monophyletic clade bancrofti brugia spp adult parasites found tissues surrounding lymph nodes neck common treeshrews conclusions newly described species appears closely related wuchereria spp brugia spp differs several morphological characteristics molecular analyses based cox rrna genes region indicated species differs bancrofti brugia spp genus level thus propose new genus malayfilaria along new species sofiani
modern high throughput techniques offer immense opportunities investigate whole systems behavior underlying human diseases however complexity data presents challenges interpretation new avenues needed address complexity diseases data constraint based modeling one formalism applied systems biology relies genome scale reconstruction captures extensive biochemical knowledge regarding organism human genome scale metabolic reconstruction increasingly used understand normal cellular disease states metabolism important factor many human diseases application human genome scale reconstruction ranges mere querying model knowledge base studies take advantage model topology notably functional predictions based cell condition specific metabolic models built based omics data increasing number diversity biomedical questions addressed using constraint based modeling metabolic models one successful biomedical applications date cancer metabolism constraint based modeling also holds great potential inborn errors metabolism obesity addition offers great prospects individualized approaches diagnostics design disease prevention intervention strategies metabolic models support endeavor providing easy access complex high throughput datasets personalized metabolic models introduced finally constraint based modeling used model whole body metabolism enable elucidation metabolic interactions organs disturbances interactions either causes consequence metabolic diseases chapter introduces constraint based modeling describes contributions systems biomedicine
aims recent evidence indicates defective ability clear apoptotic cells macrophages efferocytosis resultant apoptotic cells accumulation atherosclerotic plaques play important role progression unstable plaques cannabinoid type receptor recently emerging new target reduce vulnerability promote stability plaques however underlying mechanisms studied detail present study investigated whether selective activation improves efferocytosis macrophages main methods raw macrophage line primary isolated peritoneal lavage macrophages cbi mice cultured efferocytosis macrophages analyzed using flow cytometry confocal microscopy possible mechanisms involved regulation efferocytosis also explored using molecular biology methods key findings found jwh selective agonists receptor concentration dependently increased phagocytosis apoptotic cells normal cultured oxidative low density lipoprotein oxldl loaded raw primary macrophages jwh also regulated expressions tyrosine kinase family phagocytic receptors mertk tyro axl reduced levels tnf alpha reactive oxygen species ros induced oxldl inhibited activation rhoa gtpase significance selective activation improves efferosytosis normal cultured oxldl loaded macrophages might provide novel mechanism activation reduces vulnerability promotes stability atherosclerotic plaques elsevier inc rights reserved
hepg cell widely used cell model studying hbv hepatitis virus vitro cells hbv genome integrated several sites hepg cellular dna multiple copies may influence cellular processes constructed new plasmid pseh flag hbv transfected hepg cells screened hygromycin used elisa pcr pcr detect expression hbv cell lines cell line stably expressed hepatitis antigen hbeag hepatitis surface antigen hbsag established using southern blotting analysis found hbv genome integrated single copy cellular dna cell line useful alternative model hbv studies
nicotinate phosphoribosyltransferase naprt catalyzes conversion nicotinate nicotinate mononucleotide first reaction preiss handler pathway biosynthesis nad even though naprt activity described responsible ability increase nad levels human cells effectively nicotinamide nam far limited number studies human naprt appeared extensive characterization recombinant human naprt reported determined major kinetic parameters assayed influence different compounds enzymatic activity particular atp showed apparent dual stimulation inhibition effect low high substrates saturation respectively consistent negative cooperativity model whereas inorganic phosphate found act activator among metabolites assayed including nucleotides nucleosides intermediates carbohydrates metabolism showed inhibitory properties coa several acyl coas glyceraldehyde phosphate phosphoenolpyruvate fructose bisphosphate whereas dihydroxyacetone phosphate pyruvate exerted stimulatory effect furthermore light absence crystallographic data performed homology modeling predict protein three dimensional structure molecular docking simulations identify residues involved recognition stabilization several ligands residues resulted universally conserved among naprts study importance enzyme activity validated site directed mutagenesis elsevier masson sas rights reserved
broad range cellular functions governed ion channels represents attractive target viral manipulation indeed modulation host cell ion channel activity viral proteins increasingly identified important virus host interaction recent examples demonstrated virion entry virus egress maintenance cellular environment conducive virus persistence part dependent virus manipulation ion channel activity excitingly evidence emerged targeting ion channels pharmacologically impede virus life cycles discuss current examples virus ion channel interactions potential targeting ion channel function new pharmacologically safe broad ranging anti viral therapeutic strategy
aims human papillomavirus hpv known causative squamous cell carcinoma scc oropharynx also found infrequently carcinomas sinonasal tract recently subset carcinomas recognized harbour hpv significant morphological overlap adenoid cystic carcinoma acc rare aggressive carcinoma originating minor salivary glands termed hpv related carcinoma acc like features nine cases reported clarify occurrence tumours screened large material presence hpv related acc like carcinoma identified tumours characterized immunohistochemically fluorescence situ hybridization clinicopathological information cases presented methods results forty seven candidate cases screened presence hpv six cases identified genotyped hpv types six cases areas dysplastic mucosal lining showed remarkable heterogeneous morphologies myb mybl nfib genes intact interestingly staining myb protein largely negative contrast found acc one patient experienced local recurrence years initial treatment remaining five patients alive without evidence disease conclusion report six new cases hpv related acc like carcinoma found although small material prognosis patients seems favourable acc distinction acc hpv related acc like carcinoma myb immunohistochemistry investigation myb mybl nfib gene status valuable
recent studies association particular single nucleotide polymorphisms serine threonine kinase lysine gene wnk essential hypertension yielded controversial results frequencies alaser polymorphism within exon wnk gene assessed among unrelated ethnic chinese patients essential hypertension strictly matched normotensive controls subjects derived relatively isolated population identified kerqin desert region zhangwu county liaoning northeastern china features dry climate people high dietary salt intake addition significantly higher prevalence similar essential hypertension genotypes verified polymerase chain reaction restriction fragment length polymorphism confirmed direct sequencing expression pattern regulatory mechanisms wnk gene also explored using northern blotting vitro hormone stimulation assays strong associations alaser polymorphism raised systolic diastolic blood pressures identified addition kidneys wnk gene expression also found many organs several cis acting elements discovered promoter region gene revealed preliminary experiment various hormones regulate expression wnk among glucocorticoid hormone seems act dose dependent manner wnk gene probably plays important role pathogenesis essential hypertension missense mutation alaser polymorphism may bring changes enzyme function resulting increased susceptibility disease
previous research focusing rodent cells animal models demonstrated gremlin antagonizes bone morphogenetic proteins bmps order suppress osteogenesis however impact gremlin osteogenesis human bone marrow derived mesenchymal stem cells mscs remains unknown aim present study test effects gremlin viability invitro bmp induced osteogenic differentiation human bone marrow derived mesenchymal stem cells mscs gremlin specific small interfering rna sirna inhibited gremlin mrna protein expression human mscs mrna expression levels osteoblastic genes analyzed using reverse transcription quantitative polymerase chain reaction calcification enzymatic alkaline phosphatase alp activity assessed bmp induced osteogenic differentiation human mscs results indicated gremlin suppression significantly increased human msc metabolism dna content expression levels osteoblastic genes also significantly increased gremlin inhibition gremlin inhibited group enzymatic alp activity significantly increased addition due bmp inducing osteoblasts gremlin inhibition increased calcium deposits present study indicated gremlin inhibited cell viability osteogenic differentiation human mscs suppression gremlin expression suppressed increase cell viability osteogenic differentiation human mscs induced bmp
next generation sequencing ngs emerging technology forensic genomics laboratories offers higher resolution address problems human identification greater efficiency potential ability interrogate challenging forensic casework samples study trial set dna samples artificially degraded progressive aqueous hydrolysis analyzed together corresponding unmodified dna sample control sample test performance reliability forenseq dna signature prep kit using miseq sequencer illumina results replicate tests performed unmodified sample scalar dilutions reference sample showed robustness reliability ngs approach even sub optimal amounts high quality dna degraded samples showed limited number reads sample folds lower ones reported less concentrated dna dilution addition impossible assign genotypes degraded samples software identified corresponding loci low coverage amplification artifacts allelic imbalances allele drop outs single allele drop also scored degraded samples however forenseq dna sequencing kit illumina miseq able generate data led correct typing strs snps respectively trial samples snp markers showed higher chances typed correctly compared strs ngs approach showed promising results terms ability recover genetic information heavily degraded dna samples conventional pcr approach gave results frequency genetic mistyping low reaching value one degraded samples however results suggest validation studies definition interpretation criteria ngs data needed implementation technique forensic genetics
primary cutaneous gamma delta cell lymphoma pcgd tcl aggressive type lymphoma accounts approximately primary cutaneous lymphomas occasionally observed changes cell antigen expression immunophenotypic shift time phenomenon considered rare cell lymphoma including cutaneous cell lymphoma therefore assessed sequential biopsies pcgd tcl possible shifts lymphoma cells searched cases pcgd tcl consecutive biopsies perform comprehensive immunohistochemical analysis paired specimens median markers per case tested evaluated percentage neoplastic lymphocytes determined differential expression antigens gain loss increase decrease identified patients pcgd tcl consecutive biopsies cases shifts least antigen whereas overall pairs markers shifted gain reactivity occurred loss increased reactivity decreased molecular analysis tcr gamma showed identically sized monoclonal rearrangements biopsy pairs patients correlation shifts clinical appearance lesions histopathologic cytologic features molecular rearrangements shifts common pcgd tcl occurring patients study involving variety antigens shifts seem linked changes cell clone without obvious clinical morphologic correlates occurrence shifts pcgd tcl suggests antigen modulation may involved pathogenesis shifts somewhat frequent cell lymphoma however suggest second neoplasm molecular studies used determine clonal identity
plant defensins small basic cysteine rich peptides inhibit growth broad range fungi bacteria micro molar concentrations introduced transgenes different species enhance host resistance pathogens study fusion gene two defensins trigonella foenum graecum defensin tfgd raphanus sativus antifungal protein rsafp fused linker peptide polyprotein precursor impatiens balsamina introduced tobacco nicotiana tabacum var xanthi via agrobacterium mediated leaf section transformation putative transgenic plants confirmed pcr analysis integration fusion gene confirmed southern blotting pcr analysis showed fusion gene expressed several confirmed transgenic plants western blotting analysis crude protein extracts leaves transgenic plants anti tfgd anti rsafp antibodies exhibited kda bands corresponding size fusion gene confirmed expression fusion protein leaves transgenic plants challenged rhizoctonia solani phytophthora parasitica var nicotianae pathogens showed enhanced levels disease resistance along resistance generalist herbivore spodoptera litura larvae compared control results demonstrate tfgd rsafp fusion protein effective protecting transgenic plants fungal insect pathogens
single cell biology considered new approach identify validate disease specific biomarkers however concern raised clinicians apply single cell measurements clinical practice translate message single cell systems biology clinical phenotype explain alterations single cell gene sequencing function patient response therapies study address importance necessity single cell gene sequencing identification development disease specific biomarkers definition significance single cell biology single cell systems biology understanding single cell full picture development establishment whole cell models validation targeted biological function figure meaning single molecule imaging single cell trace intra single cell molecule expression signal interaction location headline important role single cell biology discovery development disease specific biomarkers special emphasis understanding single cell biological functions mechanical phenotypes single cell biology heterogeneity organization genome function reason believe multi dimensional multi layer multi crossing stereoscopic single cell biology definitely benefits discovery development disease specific biomarkers
background human natural killer cell activity regulated family killer cell immunoglobulin like receptors kirs bind human leukocyte antigen hla class combinations kir hla genotypes associated disease including susceptibility viral infection disorders pregnancy kirdl binds hla alleles group lys kirdl kirdl bind hla alleles group asn however model explain hla allelic effects disease impact hla bound peptides goal study determine extent endogenous hla peptide repertoire influence specific binding inhibitory kir hla allotypes results impact hla bound peptide inhibitory kir binding investigated taking advantage fact hla hla group hla hla group identical sequences apart key kir specificity determining epitope residues endogenous peptides eluted hlac used test peptide dependence kirdl kirdl binding hla hla subsequent impact cell function specific binding kirdl allotype occurred majority peptides tested contrast kirdl binding allotype occurred subset peptides cross reactive binding kirdl allotype restricted even fewer peptides unexpectedly two peptides promoted binding allotype specific kirdl allotype showed presentation endogenous peptides hiv gag peptides hla promote kir cross reactive binding conclusion kirdl binding peptide selective kirdl binding providing explanation kirdl interactions appearing weaker kirdl addition cross reactive binding kir characterized even higher peptide selectivity demonstrate hierarchy functional peptide selectivity kir hla interactions relevance cell biology human disease associations selective peptide sequence driven binding kir provides potential mechanism pathogen well self peptide modulate cell activation altering levels inhibition
background distinguishing recipient cells donor ligament cells difficult early graft healing phase anterior cruciate ligament acl reconstruction ability track distribution differentiation recipient cells using genetically engineered transgenic animals would significant clinical research effects graft healing acl reconstruction hypothesis kusabira orange pigs may allow tracking recipient cells infiltrating graft acl reconstruction repopulation recipient cells within graft would apparent even early graft healing phase necrotic donor cells still present study design descriptive laboratory study methods genetically engineered pigs carried red fluorescent protein kusabira orange acl reconstruction performed right knee using digital flexor tendon harvested wild type pigs tissue samples harvested different time points subjected histological immunohistochemical electron microscopic analyses results weeks postoperatively recipient cells expressing red fluorescence embraced graft infiltrating central part graft cells oval nuclei gradually infiltrated gap collagen fibers losing regular orientation weeks cellularity within graft doubled match native acl acellular necrotic regions still existed centrally ubiquitous cellular distributions resembling native acl observed weeks electron microscopic analysis showed mean collagen fibril diameter density gradually decreased weeks conclusion genetically engineered pigs carrying kusabira orange gene useful animal models analyzing intrinsic extrinsic cellular dynamics course graft healing acl reconstruction cellular repopulation recipient cells occurred early stage cellular distribution within graft resembled native acl weeks reconstructed graft restored ultrastructure native acl stage clinical relevance allograft acl reconstruction pig model cellular repopulation completed weeks surgery collagen matrix resumed ultrastructure native acl surgeons aware risks may remain returning sports activities weeks surgery
coated protein gene sugarcane mosaic virus scmv gene cloned maize zea mays leaves showing dwarf mosaic symptoms reverse transcription polymerase chain reaction rtpcr degraded primers results sequencing homologous comparison indicated cloned gene scmv strain mdb length including open reading frame orf encoding amino acids untranslated region utr gene constructed expression vector pscprbar antisense orientation control camvs promoter plasmid pscprbar introduced embryogenic calli induced immature embryos maize inbred line red highly susceptible scmv mdb via particle bombardment results polymerase chain reaction pcr southern blotting hybridization demonstrated scmv gene integrated maize genome plants regenerated transgenic seeds challenged scmv mdb artificial inoculation result transgenic progenies showed resistance inoculated virus different extent work beneficial extending planting regions elite inbred line red
june july nine men came fort defrance emergency department martinique french west indies less pronounced pulmonary symptoms associated two cases skin lesions three weeks nine men performed work deserted house diagnosis histoplasmosis based pulmonary sample mycological analysis direct examination culture molecular biology serological tests interrogatory environmental investigations presumed place exposition capsulatum var capsulatum spores allowed confirming contamination took place elsevier masson sas rights reserved
calcineurin calmodulin dependent serine threonine protein phosphatase roles cytosolic calcineurin well researched however roles serum calcineurin remain unknown report recombinant human calcineurin subunit cnb bind rabbit platelets show antiplatelet aggregation activity furthermore cnb exerts anticoagulant effect prolonging activated partial thromboplastin time thrombin time reducing plasma fibrinogen concentration dose dependent manner reveal functional domain associated anticoagulant activity cnb located terminus hemolysis test intravenous stimulation study show recombinant cnb cause obvious hemolysis safe intravenous injection results reveal new function calcineurin subunit also give explanation roles calcineurin subunit serum point possible implication antithrombotic therapy iubmb iubmb life
immortalized human precartilaginous stem cells ipscs established provide stable cell resource study molecular mechanism gene targeting differentiation pscs plasmid pcmvsvt pur containing simian virus large antigen gene svtag transfected human pscs using lipofectin transfection colonies isolated puromycin selection expanded multiple passages immunohistochemistry pcr southern blotting used identify transfected cells detect expression integration svtag expanded cell lines positive colonies isolated subcultured designated immortalized precartilaginous stem cells ipscs confirmed fibroblast growth factor receptor fgfr positive cells immunohistochemistry pcr svtag cdna found cultured ipscs passage southern blotting expressions svtag mrna protein confirmed pcr findings suggested ipscs strain svtag constructed successfully
invasion new areas already widespread pest organisms often occurs non obvious routes origins invasions difficult determine understanding population structure using multiple datatypes help untangle past dispersal events reveal putative contemporary invasion pathways tephritid fruit fly zeugodacus cucurbitae coquillett serious pest cucurbits commercial crops considered native indo oriental region invasive africa pacific combine molecular microsatellites coi morphological male genetalia length wing shape geometric morphometrics data within integrative taxonomic framework test hypotheses concerning levels cucurbitae population variation observed southeast asia native range sites similar individuals versus west pacific invasive range sites similar individuals whether single multiple introductions cucurbitae occurred west pacific also use case explicitly test using integrative approach provides information hypothesized invasion pathways either genetic morphological approaches would alone datasets support cucurbitae variable southeast asia west pacific within regions populations appear structured geographically particular mainland sundaic southeast asian locations formed separate clusters new guinea solomon islands closely related guam hawaii evidence supports separate single origin new guinea melanesian arc solomon islands malaysia singapore guam mainland asia multiple introductions hawaii mainland asia taken together argue great value integrating evidence multiple sources provide finer resolution population relationships single data source alone
lipid biosynthesis regulation studied mostly nonoleaginous yeast saccharomyces cerevisiae serves model eukaryotic cells hand yeast yarrowia lipolytica put forward model oleaginous microorganisms genetics known tools genetic manipulation becoming increasingly available comparison lipid biosynthetic pathways function two microorganisms shows many similarities key biosynthetic regulatory steps example enzyme phosphatidic acid phosphatase controls synthesis triacylglycerol tag yeasts controlling tag synthesis crucial metabolic engineering efforts aim increase production microbial lipids single cell oils tag comprises final product processes time comparison reveals fundamental differences generation acetyl coa lipid biosynthesis stemming oleaginous nature lipolytica differences warranty studies lipolytica biochemistry molecular biology oleaginicity explored
thermophilic enzymes tend less catalytically active lower temperatures relative mesophilic counterparts despite similar crystal structures often cited hypothesis general observation thermostable enzymes evolved rigid tertiary structure order cope extreme natural environment also less flexible lower temperatures leading lower catalytic activity mesophilic conditions alternative hypothesis however complementary thermophilic mesophilic enzyme pairs simply operate different evolutionary optimized catalytic mechanisms communication present evidence steps catalytic mechanisms mesophilic thermophilic indole glycerol phosphate synthase igps enzymes fundamentally similar identity rate determining step changes function temperature findings indicate product release rate determining degrees thermophilic igps near adaptive temperature degrees proton transfer event involving general acid becomes rate determining rate determining steps thermophilic mesophilic igps enzymes also different respective adaptive temperatures mesophilic igps catalyzed reaction rate limited irreversible release thermophilic igps catalyzed reaction rate limited afterwards elsevier inc rights reserved
india rich genetic diversity major pulse crops productivity production pulse crops remains low compared world hence need enhance utilization increasing production major pulse species genetic diversity occurring india include vigna cajanus cicer pisum lens phaseolus minor pulses macrotyloma canavalia lathyrus vicia mucuna moghania rhynchosia etc national bureau pint genetic resources nbpgr nodal institute management plant genetic resources india assembled accessions different pulse crops majoring cajanus cajan cicer arietinum phaseolus vulgaris pisum sativum vigna mungo vigna radiata vigna umbellata vigna unguiculata viceasp lens collection introduction india countries world several pests quarantine significance identified salvaged exotic germplasm situ base collection nbpgr conserve accessions genera species pulses germplasm characterized agro morphological quality biochemical traits biotic abiotic stresses identifying trait specific reference sets catalogues describing accessions pulse crops total accessions various pulse crops registered unique potential donors core mini cores developed chickpea pigeonpea common bean mungbean adzuki bean cowpea lentil moth bean pea nationally internationally wild species pulse crops utilized transferring desirable traits cultivated species application modern tools technologies molecular biology accelrate process gene transfer improvement pulse crops
coccinia grandis family cucurbitaceae perennial dioecious herb heteromorphic sex chromosomes quality model plant analysis sexual evolution angiosperms yet little known physical side genetic orientation substitution behavior key gender defining factors important plant species screening genomic dna rapd primers used sex diagnosis gender specificity grandis study bulk analyses pooled dna male female genotypes resulted isolation putative male specific sex marker cgmsm sequence characterized amplified region scar marker cgy designed cgmsm amplified fragment male grandis female plants southern blotting confirmed single copy locus male genome cgy marker accurately identified male female genotypes individuals grandis unknown sex sequence homology revealed high similarity cgmsm cgy putative mads box domain apetala mads box gene responsible development petals stamens flowering plants thus scar marker cgy could used efficient tool early sex identification grandis forms basis characterization genes associated evolutionary pathways sexual dimorphism elsevier rights reserved
induced mutations used effectively plant improvement physical chemical mutagens induce high frequency genome variation recently developed screening methods allowed detection single nucleotide polymorphisms snps identification traits difficult identify molecular level conventional breeding assistance reverse genetic techniques sequence variation information linked traits investigate gene function targeting induced local lesions genomes tilling high throughput technique identify single nucleotide mutations specific region gene interest powerful detection method resulted chemical induced mutagenesis main advantage tilling reverse genetics strategy applied species regardless genome size ploidy level however tilling requires laborious time consuming steps lack complete genome sequence information many crop species slowed development suitable tilling targets another method high resolution melting hrm assisted tilling mutation detection faster simpler less expensive non enzymatic screening system currently sequencing crop genomes completely changed vision interpretation genome organization evolution impressive progress next generation sequencing ngs technologies paved way detection exploitation genetic variation given dna rna molecule review discusses applications tilling combination hrm ngs technologies screening induced mutations discovering snps mutation breeding programs
background inflammation key feature aldosterone induced vascular damage dysfunction molecular mechanisms aldosterone triggers inflammation remain unclear nlrp inflammasome pivotal immune sensor recognizes endogenous danger signals triggering sterile inflammation methods analyzed vascular function inflammatory profile wild type nlrp knockout nlrp caspase knockout casp interleukin receptor knockout mice treated vehicle aldosterone gkg days osmotic mini pump receiving saline drink results show nlrp inflammasome plays central role aldosterone induced vascular dysfunction long term infusion aldosterone mice resulted elevation plasma interleukin levels vascular abnormalities mice lacking inflammasome components nlrp caspase protected aldosterone induced vascular damage vitro aldosterone stimulated nlrp dependent interleukin secretion bone marrow derived macrophages activating nuclear factor signaling reactive oxygen species generation moreover chimeric mice reconstituted nlrp deficient hematopoietic cells showed nlrp immune cells mediates aldosterone induced vascular damage addition aldosterone increased expression nlrp active caspase mature interleukin human peripheral blood mononuclear cells hypertensive patients hyperaldosteronism normal levels aldosterone exhibited increased activity nlrp inflammasome suggesting effect hyperaldosteronism inflammasome may mediated high blood pressure conclusions together data demonstrate nlrp inflammasome activation critically involved deleterious vascular effects aldosterone placing nlrp potential target therapeutic interventions conditions high aldosterone levels
malignant pleural mesothelioma mpm rare aggressive tumor generally disappointing results terms survival however occasional long term survivors probably due biologic characteristics disease standard uptake value suv fluorodeoxyglucose fdg evaluated photon emission tomography pet widely accepted indicator biologic behavior several malignancies aim study verify whether suvmax suvmean inversely associated prognosis patients mpm whether correlation grading disease stage suv value patients histologically proven mpm underwent integrated pet computed tomography scanning patients fasted received mbq fdg per kilogram body weight based maximum chi square method suvmax range suvmean range used classify patients good poor prognosis respectively january march patients analyzed median age years range histologic mpm subtypes epithelioid patients biphasic patients median follow months range difference median survival either high low suvmax months range reached months range reached high low suvmean months range reached months range reached high suvmax statistically correlated high stage disease trend towards statistical significance high grade disease high suvmean trend found advanced stages suvmax observed significant correlation high suvmax high grade disease relationships suvmax suvmean biologic clinical parameters found probably due patient characteristics non routine use fdg pet stage rare tumors mpm
stromules stroma filled tubules narrow tubular extensions surface chloroplast universally observed plant cells whose functions remain mysterious alongside growing attention role chloroplasts coordinating plant responses stress interest stromules relationship chloroplast signaling dynamics increased recent years aided advances fluorescence microscopy protein fluorophores allow rapid accurate visualization stromule dynamics provide detailed protocols assay stromule frequency epidermal chloroplasts nicotiana benthamiana excellent model system investigating chloroplast stromule biology also provide methods visualizing chloroplast stromules vitro extracting chloroplasts leaves finally outline sampling strategies statistical approaches analyze differences stromule frequencies response stimuli environmental stress chemical treatments gene silencing researchers use protocols starting point develop new methods innovative experiments explore chloroplasts make stromules
present report describes month pilot remediation study consists combination geofixation dechlorination chlorinated ethenes achieved sequential use nanoscale zerovalent iron nzvi particles situ biotic reduction supported whey injection remediation process monitored using numerous techniques including physical chemical analyses molecular biology approaches enabled characterization mechanisms involved pollutant transformation description overall background processes treatment results revealed nzvi efficient toward completely removed groundwater loq subsequent application whey resulted high removal chlorinated ethenes persistence reducing conditions even depletion organic substrates indicated complementarity nzvi whey phases combined technology subsequent application whey phase partially assisted microbial regeneration spent nzvi promoting reduction supported remediation conditions site illumina sequencing detection functional vcra bvca genes documented development reducing microbes iron reducing sulfate reducing chlororespiring bacteria benefited conditions site probably responsible high dechlorination reduction results study demonstrate feasibility high efficiency combined nano biotechnological approach nzvi whey application situ removal chlorinated ethenes groundwater contaminated site elsevier rights reserved
recent years plethora studies demonstrated paramount physiological importance gut microbiota various aspects human health development particular focus set probiotic members community best studied assigned lactobacillus bifidobacterium genera effects pathogen exclusion alleviation inflammation allergies colon cancer bowel disorders attributed activity probiotic bacteria selectively ferment prebiotics comprising mainly non digestible oligosaccharides thus glycan metabolism important attribute probiotic action factor influencing composition gut microbiota quest understand molecular mechanism selectivity certain glycans explored routes uptake utilization variety oligosaccharides differing size composition glycosidic linkages combination omics technologies bioinformatics enzymology protein characterization proved fruitful elucidating protein transport catabolic machinery conferring utilization glucosides galactosides xylosides two clinically validated probiotic strains lactobacillus acidophilus ncfm bifidobacterium animalis subsp lactis importantly able identify cases validate specificity several transport systems otherwise poorly annotated demonstrated first time non naturally occurring tri tetra saccharides internalized efficiently utilized probiotic bacteria cases better well established natural prebiotics selected highlights data presented emphasising importance diversity oligosaccharide transport probiotic bacteria
autoimmune diseases occur immune system incorrectly recognizes self molecules foreign case multiple sclerosis myelin attacked intriguingly new studies reveal toll like receptors tlrs pathways usually involved generating immune responses pathogens play significant role driving autoimmune disease humans animal models reasoned polyplexes formed myelin self antigen regulatory tlr antagonists might limit tlr signaling differentiation myelin specific cells inducing tolerance biasing cells away inflammatory phenotypes complexes formed modifying myelin peptide cationic amino acids create peptides able condense anionic nucleic acid based tlr antagonist immunological polyplexes eliminate synthetic polymers commonly used condense polyplexes rely gene expression however complexes mimic key features traditional polyplexes tunable loading delivery using materials classic polyplex analysis techniques demonstrate condensation immune signals protection enzymatic degradation tunable physicochemical properties show polyplexes reduce tlr signaling primary dendritic cell cell culture reduce myelin driven inflammation mouse models tolerogenic polyplexes improve progression severity incidence disease authors published elsevier ltd
dietary lipids directly related composition adipose tissue aetiology obesity arousal obesity related pathologies like chronic inflammation states haptoglobin acute phase protein secreted liver white adipose tissue blood levels vary according volume fat body investigate effect diets enriched large amounts dietary fats differ fatty acid composition haptoglobin gene expression visceral subcutaneous adipose tissue mice fed days weeks cells treated fatty acids found types dietary fats mice treated acutely days chronically weeks diets enriched soybean oil fish oil coconut oil lard cells treated six different fatty acids haptoglobin gene expression quantified northern blotting chronic acute treatment lard rich long chain saturated fatty acids increased haptoglobin mrna expression retroperitoneal epidydimal white adipose tissues chronic treatment coconut oil rich medium chain saturated fatty acids increased haptoglobin expression epidydimal subcutaneous depots palmitic acid increased haptoglobin gene expression type lipids diet differently modulate white adipose tissue gene expression haptoglobin saturated fatty acids play major role promoting pro inflammatory environment response fat pad specific dependant duration treatment
telomerase ribonucleoprotein enzyme catalyzes processive addition telomeric dna repeat ttaggg onto chromosome ends addition fascinating biochemical enzymatic properties clinical interest telomerase stems dysregulated expression similar human cancers representing broad spectrum diseases exploiting telomerase therapeutic target hence identifying evaluating potential inhibitors requires quantitative measurement activity article presents procedures measuring multiple aspects telomerase enzymology relevant fundamental biochemistry drug discovery direct activity assays dna binding affinity dna dissociation cell based expression active enzyme complex elsevier inc rights reserved
microbial proteases occupy pivotal position respect commercial applications important hydrolytic enzymes studied extensively since advent enzymology cold adapted microorganisms potential source cold active proteases isolated cold regions although many microbial sources available producing proteases recognized commercial producer cold active proteases along producing microbes commercial value find multiple applications various industrial biotechnological sectors additives detergents additives food industries environmental bioremediations biotransformation molecular biology applications therefore cold active proteases enzymes choice many biotechnologists microbiologists biochemists environmentalists biochemical engineers present review discuss novel sources along recent developments production biotechnological applications cold active microbial proteases
bacterial biofilms frequently form fungal surfaces involved numerous bacterial fungal interaction processes metabolic cooperation competition predation study biofilms important many biological fields including environmental science food production medicine however studies focused bacterial biofilms partially due difficulty investigating methods qualitative quantitative biofilm analyses described literature suitable biofilms forming abiotic surfaces homogeneous thin biotic surfaces monolayer epithelial cells laser scanning confocal microscopy lscm often used analyze situ vivo biofilms technology becomes challenging applied bacterial biofilms fungal hyphae due thickness three dimensions hyphal networks overcome shortcoming developed protocol combining microscopy method limit accumulation hyphal layers fungal colonies using method able investigate development bacterial biofilms fungal hyphae multiple scales using lscm scanning electron microscopy sem report describes protocol including microorganism cultures bacterial biofilm formation conditions biofilm staining lscm sem visualizations
brown beige adipose tissue may represent important therapeutic targets treatment diabetes obesity organs dissipate nutrient energy heat thermogenic uncoupling protein ucp mice commonly used mimic potential effects brown beige adipose tissue may act human metabolism new animal models edging market translational medicine pigs reflect human metabolism better mice multiple parameters obesity induced hyperglycemia cholesterol profiles energy metabolism recently reported energy expenditure body temperature pigs induced hormone leptin leptin action mediated ucp adipose tissue given tremendous importance identifying molecular mechanisms targeting therapeutics critically examine evidence supporting presence ucp pigs conclude methodological shortcomings prevent unequivocal claim presence ucp pigs despite believe leptin effects energy expenditure pigs potentially transformative human medicine absence ucp adult obese humans possess minor amounts ucp general propose biology new animal models requires attention comparative studies humans given increasing amount genomic information various animal species authors published elsevier gmbh open access article license http creativecommons org licenses
streptomyces nucleases widely distributed multifunctional enzymes acting dna rna occur extra well intracellularly classified sugar specific sugar non specific nucleases nucleases play different roles like analytical biological nutritional also used programmed cell death although nucleases reported date little information available regarding structure function relationship active site based sequence homology probable mechanism action review describes history occurrence localization production purification properties applications streptomyces nucleases
covalently interstrand cross linked dna interesting tool study dna binding proteins locally open dna duplex flipping single bases dna helix melting whole stretches base pairs perform function ideal dna cross link study protein dna interactions specific easy synthesize stable protein binding experiments short covalent linker avoid steric hindrance protein binding available mimic base pairs cover possible binding specificities several covalent interstrand cross links described literature fall short least one criteria developed efficient method site specifically reversibly cross link thionucleoside base pairs synthetic duplex oligodeoxynucleotides bisalkylation diiodoethane resulting ethylene bridged base pair linked base pair analogs conveniently prepared allows studying base pair opening enzyme regardless sequence specificity cross link stable absence reducing agents linker quickly tracelessly removed addition thiol reagents like dithiothreitol property makes cross linking reaction fully reversible allows switching linked base pair locked unlocked biochemical experiments using dna methyltransferase thermus aquaticus taqi example demonstrate presented cross linked dna ethylene linked base pair analog target position useful tool determine base flipping equilibrium constant base flipping enzyme lies mostly extrahelical side taqi
micrornas mirnas small rnas play important regulatory roles many cellular pathways mirnas associate members argonaute protein family bind partially complementary sequences mrnas induce translational repression mrna decay using deep sequencing northern blotting characterized mirna expression wild type mir deficient dendritic cells dcs macrophages analysis different stimuli lps ldl eldl oxldl reveals direct influence mir expression levels mirnas example mir negatively regulated mir deficient cells possibly due inhibition transcription factor ebpbeta mir based comprehensive data sets propose model hierarchical mirna expression dominated mir dcs macrophages federation european biochemical societies published elsevier rights reserved
aim study investigate effects tetrahydroberberine thb tetrahydropalmatine thp expression mouse liver cytochrome evaluate liver toxicity mice real time polymerase chain reaction pcr western blot analyses used analyze expression major isoforms liver toxicity evaluated measuring serum biochemical parameters performing histopathological analysis real time pcr results showed thb induced cypa fold cypa fold cype fold mrna expression thp inhibited cypa fold mrna expression western blot results confirmed expression cypa cypa cype proteins mouse liver induced thb whereas cypa inhibited thp toxicological studies showed thb oral gavage increased mouse serum aspartate transaminase total bilirubin liver malondialdehyde levels induced liver edema obvious changes serum liver tissue biochemical parameters found significant pathological changes detected liver tissues thp administration results provide information toxicity thb thp related drug drug interactions elsevier rights reserved
review summarizes biogenesis composition intracellular transport possible functions trichocysts trichocyst release paramecium fastest dense core secretory vesicle exocytosis known enabled crystalline nature trichocyst body whose matrix proteins tmp upon contact extracellular undergo explosive recrystallization propagates cooperatively throughout organelle membrane fusion stimulated trichocyst exocytosis involves mobilization alveolar sacs tightly coupled store operated influx initiated activation ryanodine receptor like release channels particularly aminoethyldextran perfectly mimics physiological function trichocysts defense predators vigorous local trichocyst discharge tmp contained main body trichocyst arranged defined pattern resulting crossstriation whose period expands upon expulsion second part trichocyst tip contains secretory lectins diffuse upon discharge repulsion predators may function trichocysts consider ciliary reversal accompanying stimulated trichocyst exocytosis also mutants devoid depolarization activated channels second automatically superimposed defense mechanism third defensive mechanism may effectuated secretory lectins trichocyst tip may inhibit toxicyst exocytosis dileptus crosslinking surface proteins effect mimicked paramecium antibodies cell surface components proteins body tip glycosylated visualized binding exogenous lectins reflects biogenetic pathway endoplasmic reticulum via golgi apparatus also supported details molecular biology fragile links connecting matrix trichocyst membrane may signal filling state full empty tmp release upon exocytosis respectively supported experimentally produced frustrated exocytosis membrane fusion without contents release followed membrane resealing entry new cycle reattachment stimulated exocytosis puzzles solved considering absence detectable acidity organelle causes striking effects silencing genes specific release channels subunits atpase determines inherent polarity trichocyst precisely causes inability trichocyst mutants dock cell membrane many details call experimental work unravel secrets fascinating organelles
beta glucanases one well known families pathogenesis related proteins responding pathogen infection environmental stresses hydrolytic enzymes abundant plants plant beta glucanases considered broad range biological functions normal physiological process well defence response pathogens plant beta glucanases studied detail antifungal proteins vivo vitro investigate beta glucanase genes involved self defence fruit development novel gene ppglu isolated fruit pyrus pyrifolia nakai huobali kind local sand pear china high resistance biotic abiotic stresses putative protein sequence ppglu highly homologous beta glucanases plant species bioinformatics analyses indicated catalytic conserved amino acid residues occupied highly conserved positions primary structure putative protein ppglu plant beta glucanases moreover ppglu rather conserved main chain conformation folding patterns plant beta glucanases transcripts ppglu dramatically induced pericarps huobali fruits removing bags days rapidly declined fruits debagged week furthermore constitutive plant expression vector ppglu constructed transferred tobacco nicotiana tabacum xanthi verify function ppglu ppglu gene successfully integrated genome transgenic tobacco lines expressed expect transformants southern blotting quantitative reverse transcription polymerase chain reaction qrt pcr analyses antifungal activity ppglu detected vitro plates crude protein extract transgenic tobacco lines inhibited hyphal growth following three fungi phomopsis alternaria fusarium different degrees
consumption fish shellfish major route human exposure arsenic contain relatively large concentrations organoarsenicals particular arsenobetaine considered non toxic rapid excretion human body however previous studies human metabolism excretion used compound solution rather considering effects occur digestion food gastrointestinal tract preliminary study used microcosms inoculated human faecal matter investigate aerobic anaerobic degradation microorganisms associated large intestine samples recovered days centrifuged filtered supernatant analysed total content speciation using icp hplc icp respectively days total supernatants aerobic experiment fell minimum total added recovering less added days using anion cation exchange chromatography coupled icp detection arsenobetaine dimethylarsinic acid dma dimethylarsinoylacetic acid dmaa trimethylarsine oxide tmao identified degradation products results aerobic system showed days incubation degraded dma dmaa tmao days degraded reappeared samples results anaerobic system showed degradation day course experiment findings demonstrate first time biocatalytic capability degradation exists within human gastrointestinal tract
recently reported targeted deletion pannexin neural precursor cells ventricular zone impairs maintenance cells healthy stroke injured brain frame exciting new finding context previous studies pannexin neural precursors well close relationship pannexin purinergic receptors established groups moreover identify important gaps understanding pannexin neural precursor cell biology terms underlying molecular mechanisms functional behavioural outcomes
ido relative ido implicated tryptophan catabolism immune modulation specific contributions normal physiology pathophysiology known evolutionary genetic studies suggest ido unique function ancestral ido mice ido gene deletion appreciably affect embryonic development hematopoiesis leads defects allergic autoimmune responses ability ido influence generation regulatory cells gene expression studies indicate ido basally narrowly expressed gene ido ido uniquely regulated ahr serves physiological receptor tryptophan catabolite kynurenine established krn transgenic mouse model rheumatoid arthritis ido gene deletion effect ido deletion selectively blunts responses autoantigen effect responses neoantigen challenge human populations natural variations ido gene sequence attenuate enzymatic activity reported influence brain cancer control adaptive immune responses ido protein consistent concept ido involved shaping immune tolerance human beings biochemical pharmacological studies provide evidence differences ido enzymology function relative ido suggest ido may act distinct manner ido set point tolerance altered self antigens along self non self continuum immune challenges cancer autoimmunity may arise
obesity linked cardiovascular disease hypertension diabetes metabolic syndrome elevated markers systemic inflammation intercellular adhesion molecule icam transmembrane adhesion molecule involved leukocyte migration sites inflammation human obesity elevated expression soluble form icam sicam positively correlated abdominal fat deposition increases adiposity also correlated macrophage infiltration adipose tissue investigate adipose tissue production transcriptional regulation icam mouse model dietary obesity feeding mice high fat diet icam expression serum adipose tissue analyzed elisa northern blotting real time quantitative pcr flow cytometry high fat diet sicam levels significantly correlated body weight abdominal fat mass icam mrna expressed adipose tissue mice significantly higher levels males females adipose tissue specific increases mrnas icam monocyte chemoattractant protein mcp male mice analysis stromal vascular fraction male adipose tissue revealed cdb negative cells increased surface icam also found two populations cdb icam cells one also expressed cdc increased response high fat diet results indicate within high fat diet male mice exhibited significant increases pro inflammatory factors immune cell infiltration adipose tissue may represent links obesity associated inflammatory complications
new high performance capillary electrophoresis assay aminothiols human blood including homocysteine marker several human metabolism disorders developed sample preparation involves conversion disulfides free thiols triphenylphosphine precipitation proteins sulfosalicylic acid conjugation thiols monobromobimane derivatized thiols separated sodium phosphate buffer using fused silica capillary cmx mum degreesc electric field separation homocysteine glutathione cysteine occurred less min detection used confirm monobimane thiols peaks detection limit similar nmol labeled aminothiols proposed method compounds analysis included simple sample preparation high selectivity good linearity high reproducibility within run precision derivatized aminothiol peaks area rsd three times consequently injected sample high reliability small volumes required analysis made suitable clinical studies elsevier science rights reserved
several bacterial isolates recovered surface sterilized root nodules arachis hypogaea peanut plants growing soils cordoba argentina rdna sequences seven fast growing strains obtained phylogenetic analysis showed isolates belonged phylum proteobacteria class gammaproteobacteria included pseudomonas spp enterobacter spp klebsiella spp storage strains became unable induce nodule formation arachis hypogaea plants enhanced plant yield isolates inoculated infective bradyrhizobium strain even found colonizing pre formed nodules analysis symbiotic genes showed nifh gene detected klebsiella like isolates nodc gene could amplified pcr detected southern blotting isolates results obtained support idea isolates opportunistic bacteria able colonize nodules induced rhizobia elsevier gmbh rights reserved
cellular proteins work isolation instead often function part large macromolecular complexes transported concentrated specific cellular compartments function highly crowded environment central theme modern cell biology understand macromolecular complexes assembled efficiently find destinations faithfully opinion article focus heat repeats flexible arrays amphiphilic helices found many eukaryotic proteins karyopherins condensins discuss uniquely designed helical repeats might underlie dynamic protein protein interactions support cellular functions crowded environments make bold speculations functional similarities action heat repeats intrinsically disordered regions idrs macromolecular phase separation potential contributions heat heat interactions well cooperation heats idrs mesoscale organelle assembly discussed
cell specific restriction viral replication without concomitant attenuation benefit vaccine development gene therapy oncolytic virotherapy understanding biological properties viruses several mechanisms regulating viral tropism however tend virus class specific many result virus attenuation additionally many viruses including picornaviruses exhibit size constraints allow incorporation large amounts foreign genetic material required targeting methods micrornas short non coding rnas regulate gene expression eukaryotic cells binding complementary target sequences messenger rnas preventing translation accelerating degradation different cells exhibit distinct microrna signatures many micrornas serve biomarkers differential expression patterns exploited restricting gene expression cells express specific micrornas maintaining expression cells regards regulating viral tropism sequences complementary specific micrornas incorporated viral genome generally non coding regions targeting destruction presence cognate micrornas thus preventing viral gene expression replication microrna targeting technique theoretically applied viral vectors without altering potency virus absence corresponding micrornas describe experimental methods associated generating microrna targeted picornavirus evaluating efficacy specificity targeting vitro protocol designed rapidly replicating virus lytic replication cycle however modification time points analyzed specific virus titration readouts used aid adaptation protocol many different viruses
background facioscapulohumeral muscular dystrophy fshd linked chromatin relaxation due epigenetic changes macrosatellite array molecular diagnostic criteria fshd complex involve analysis high molecular weight hmw genomic dna isolated lymphocytes followed multiple restriction digestions pulse field gel electrophoresis pfge southern blotting subject genetically diagnosed fshd one alleles shows contraction array repeats maintaining least repeat contraction cis disease permissive type subtelomere fshd contraction independent diagnosed excluded common genetic diagnostic procedure however fshd fshd linked epigenetic deregulation assayed dna hypomethylation array fshd permissive alleles developed pcr based assay identifies epigenetic signature types fshd distinguishing fshd fshd performed genomic dna isolated blood saliva cultured cells results samples obtained healthy controls patients clinically diagnosed fshd include fshd fshd genomic dnas subjected bisulfite sequencing analysis distal repeat type subtelomere dux promoter region compared genomic dna isolated saliva blood individuals found similar epigenetic signatures dna hypomethylation restricted contracted chromosome fshd patients healthy control subjects hypermethylated candidates fshd showed extreme dna hypomethylation dux gene body well analyzed dux sequences importantly assay amplify arrays non permissive type subtelomeres accurately excludes arrays non permissive type subtelomeres conclusions developed assay identify changes dna methylation pathogenic distal repeat show dna methylation profile saliva reflects fshd status assay distinguish fshd healthy controls differentiate fshd fshd require hmw genomic dna pfge performed either cultured cells tissue blood saliva samples
microneurographic recordings human muscle sympathetic nerve activity responses sudden sensory stimuli arousal revealed intraindividually reproducible response profiles healthy young males predict different neural blood pressure responses sustained stress approximately subjects inhibit muscle sympathetic nerve activity arousal whereas remaining latter group displays markedly greater blood pressure increase response arousal well minutes mental arithmetic studying group monozygotic twins pairs excluded analysis aim present study evaluate degree genetic determination sympathetic response profiles muscle sympathetic burst incidence rest similar twins within pair burst incidence ratio sem compared found unrelated pairs confirming previous study laboratory contrast sympathetic responses arousal showed large twin within pair variance arousal inhibition ratio significantly differ variance pairs unrelated subjects finding human muscle sympathetic nerve responses arousal less determined genotype resting level corresponding sympathetic nerve activity suggests arousal response pattern prone altered environmental factors raises possibility intraindividually reproducible sympathetic neural response profiles modified positive direction cardiovascular risk perspective
purpose review discuss advantages limitations microdialysis technique diagnostic research tool using recent findings human metabolism recent findings results several studies supported potential microdialysis diagnostic tool metabolic monitoring difficult accessible tissues brain liver intestine however despite promising results clear diagnostic measures yet emerged several studies combining microdialysis stable isotope tracers shown approach great potential studying human metabolism non invasively specific tissue beds dynamic way summary bearing mind limitations assumptions microdialysis technique useful tool investigations human metabolism main advantages used safely low grade invasiveness humans thereby allows continuous sampling prolonged periods time specific tissues without taking biopsies present microdialysis would seem useful diagnostic tool integrated total clinical physiological pharmacological evaluation within human metabolic research microdialysis useful technique
adipose tissue plays important role tumor progression provides nutrients adipokines proliferating cells fatty acid binding protein fabp key adipokine fatty acid transport metabolic pathologies plasma levels fabp increased however role circulating protein unknown recent studies demonstrated fabp might role tumor progression molecular mechanisms involved still unclear study analysed role efabp exogenous fabp breast cancer progression mcf mda breast cancer cells express substantial levels fabp protein intracellular fabp levels increased efabp incubation moreover efabp enhanced proliferation breast cancer cells effect mcf mda cell migration additionally efabp induced akt mapk signaling cascades breast cancer cells inhibition pathways reduced efbap mediated cell proliferation interestingly efabp treatment mcf cells increased levels transcription factor foxm fatty acid transport proteins fabp summary showed efabp plays key role tumor proliferation activates expression fatty acid transport proteins mcf breast cancer cells wiley periodicals inc
last decades perception selenium undergone substantial changes toxic effects recognized causing hair hoof loss animals essential role microbial animal human metabolism recognized later discovery selenium deficiency causing white muscle disease feedstock nowadays positive effect systematic selenium supplementation discussed manifold topics cancer diabetes prevention avian influenza susceptibility treatment selenium containing waste streams poses notable challenge environmental engineers date ultimate solution found selenium contamination agricultural areas western usa future selenium contamination carries imminent danger increasing energy demand covered fossil fuel combustion lead major selenium emission toxicity review presents current knowledge selenium role environmental sciences outlines potentially feasible treatment options targeting variety selenium contaminated waste streams elsevier rights reserved
introductionthe etiological diagnosis pleural effusion difficult task diagnostic tools establish definitive etiological diagnosis cases objectivesto verify diagnostic accuracy latex agglutination test lat etiological diagnosis pleural effusions caused streptococcus pneumoniae haemophilus influenzae type methodsafter thoracocentesis paired fresh samples pleural fluid children adolescents included investigation tested blindly simultaneously counterimmunoelectrophoresis cie lat bacteria sensitivity specificity predictive values likelihood ratios calculated taking cie reference standard resultsthe sensitivity specificity lat confidence interval confidence interval respectively whereas positive calculated bayes theorem negative predictive values respectively lower confidence interval positive negative confidence interval zero respectively conclusionsour results suggest lat useful tool etiological diagnosis pleural effusion reliable rapid simple perform shows excellent yield studied population helping prescribe appropriate antibiotics clinical condition
study attempted explore effect possible mechanism andrographolide ova induced asthma ova challenge induced significant airway inflammatory cell recruitment lung histological alterations ameliorated andrographolide protein levels cytokines bron choalveolar fluid balf serum reduced andrographolide administration well mrna levels lung tissue mechanically andrographolide markedly hampered activation nuclear factor kappa kappa nlrp inflammasome vivo vitro thus decreased levels tnf alpha beta finally confirmed ros scavenging responsible andrographolide inactivation kappa nlrp inflammasome signaling study revealed effect possible mechanism andrographolide asthma may represent new therapeutic approach treating disease
vater vacterl association describes combination congenital anomalies including vertebral defects anorectal malformations cardiac defects tracheoesophageal fistula without esophageal atresia renal malformations limb defects mutations ciliary genes observed diseases related vater vacterl performed targeted resequencing ciliary candidate genes well disease associated genes foxf hoxd pten zic patients vater vacterl vater vacterl like phenotype detected biallelic mutation ciliary candidate genes however identified identical probably disease causing zic missense mutation glycys four patients foxf novo mutation glycys patient situ hybridization analyses mouse embryos revealed zic expression limb prevertebral structures foxf expression esophageal tracheal vertebral anal genital tubercle tissues hence vater vacterl organ systems data provide strong evidence mutations zic foxf contribute vater vacterl wiley periodicals inc
island endemic species much higher risk extinction mainland phoenix damselfly pseudolestes mirabilis kirby single representative family pseudolestidae insecta odonata endemic hainan island facing danger extinction along acceleration urbanization investigate population genetics evaluate conservational importance mitochondrial gene coi individuals populations phoenix damselfly sequenced analyzed first comprehensive population ecological study species results recovered low genetic diversity weak phylogeographic structure multiple lines evidence including neutrality test mismatch distribution analysis phylogenetic topologies bayesian skyline plot supported population expansion last glacial maximum statistics genetic diversity gene flow potential habitats reconstruction suggested refugia constricted south central areas island meanwhile small population size low genetic variation peripheral populations also implied niche reduction increasing human activity severe environment destruction may main reasons causing recent decline population increasing risk extinction therefore urgent conservational efforts must implemented ensure long term survival mirabilis present research provided way prioritize assess management strategies charismatic species
one important feature major opportunistic human pathogen staphylococcus aureus extraordinary ability rapidly acquire resistance antibiotics genomic studies reveal aureus carries many virulence resistance genes located mobile genetic elements suggesting horizontal gene transfer hgt plays critical role aureus evolution however full detailed description methodology used study hgt aureus still lacking especially regarding natural transformation recently reported bacterium work describes three protocols useful vitro investigation hgt aureus conjugation phage transduction natural transformation aim cfr gene chloramphenicol florfenicol resistance confers phenicols lincosamides oxazolidinones pleuromutilins streptogramin phlopsa resistance phenotype used understanding mechanisms aureus transfers genetic materials strains essential comprehending rapid acquisition resistance helps clarify modes dissemination reported surveillance programs predict spreading mode future
molecular pathological epidemiology mpe transdisciplinary relatively new scientific discipline integrates theory methods resources epidemiology pathology biostatistics bioinformatics computational biology underlying objective mpe research better understand etiology progression complex heterogeneous human diseases goal informing prevention treatment efforts population health clinical medicine although mpe research commonly applied investigating breast lung colorectal cancers methodology used study diseases recent successes mpe studies include development new statistical methods address etiologic heterogeneity enhancement causal inference identification previously unknown exposure subtype disease associations better understanding role lifestyle behavioral factors modifying prognosis according disease subtype central challenges mpe include relative lack transdisciplinary experts educational programs forums discuss issues related advancement field address challenges highlight recent successes field identify new opportunities series mpe meetings held dana farber cancer institute boston herein share proceedings third international mpe meeting held may attended scientists countries special topics included integration mpe immunology health disparity research meeting series continue provide impetus foster transdisciplinary integration divergent scientific fields
mitogen activated protein kinase mapk cascades signalling modules transduce extracellular signalling range cellular responses plant mapk cascades implicated development stress response study isolated novel group mapkk gene zmmkk maize northern blotting analysis revealed zmmkk transcript expression regulated cold high salt exogenous regulated exogenous abscisic acid aba expression zmmkk arabidopsis conferred tolerance cold salt stresses increased germination rate lateral root numbers plant survival rate chlorophyll proline soluble sugar contents antioxidant enzyme peroxidase pod catalase cat activities compared control plants furthermore zmmkk enhanced kda kinase activity cold salt stresses pcr analysis revealed transcript levels stress responsive transcription factors functional genes higher zmmkk expressing plants control plants addition zmmkk protein localized nucleus taken together results indicate zmmkk positive regulator salt cold tolerance plants
changes endopolygalacturonase endo levels endo expression nonmelting flesh nmf melting flesh peach fruits prunus persica softening studied endo gene analysed identify polymorphisms exploitable early marker assisted selection flesh texture role endo softening assessed western northern blotting biochemical analyses polymorphisms endo gene revealed reverse transcription polymerase chain reaction pcr sequencing endo protein detected nmf fruits levels endo protein higher increased softening fruits remained lower constant nmf fruits different levels endo appeared caused differential expression endo gene whose open reading frame orf showed five single nucleotide polymorphisms snps nmf oro compared bolero one snps allowed determine allelic configuration melting flesh locus also seemed exploitable early mas nmf phenotypes nmf phenotype seem caused large deletion endo gene
present work aimed developing vector construct suitable restoring fertility transgenic male sterile tobacco plants expressing male sterility inducing orfh tapetal cell layer nizampatnam planta ptgs vectors could produce either intron spliced hairpin rna orfh induce silencing orfh heterologous utr region developed using selected orf fragment orfh constructs independently mobilized agrobacterium used transforming tobacco generation plants carrying restorer gene cassettes homozygous condition identified crossed male sterile transgenic tobacco plants obtain hybrid seeds pcr analysis hybrid plants indicated segregation sterility inducing cassette plants carried restorer cassette hybrid plants produced fertile pollen grains formed normal capsules upon selfing molecular analyses hybrid plants pcr northern blotting sirna detection revealed intron interrupted hairpin rna ihp rna mediated gene silencing effective compared silencing heterologous utr shutr indicated complete degradation orfh transcripts formation higher levels orf specific sirna molecules plants carrying ihp rna restorer construct segregation analyses selfed hybrid plants confirmed segregation gene cassettes traits mendelian hybrid ratio taken together results established intron hairpin transitive rnai mediated silencing orfh transcripts restored fertility transgenic male sterile tobacco plants expressing orfh ihp rna efficient silencing orfh transcripts
effects water soluble nonstarch polysaccharides snsp human metabolism considered beneficial decrease postprandial glycaemia insulinaemia following ingestion starch rich foods mechanisms snsp attenuate postprandial rise blood glucose well understood presence increases viscosity gastrointestinal contents affects physiological functions gastric emptying peristalsis increased viscosity decreased water activity hydrothermal treatment starch could influence alpha amylase action using guar galactomannan representative snsp found galactomannan direct noncompetitive inhibitory effect alpha amylase value approximately mum inhibition time dependent studies suggest direct binding enzyme galactomannan resulting galactomannan amylase complex inactive processing starch low water levels greatly affects catalytic efficiency amylase value starch heat treated limited water raised cat lowered relative starch gelatinised excess water since galactomannan effect alpha amylase conclude inhibitory action polymer secondary decrease available water neither seem consequence impaired diffusion enzyme substrate products increase viscosity medium thus effects snsp lowering postprandial glycaemia involve modifications gut physiology also include direct inhibition first stage biochemical degradation starch elsevier science rights reserved
funding bodies tended encourage collaborative research generally highly cited sole author research higher mean citation collaborative articles imply collaborative researchers general research productive article assesses extent research productivity varies number collaborative partners long term researchers within three web science subject areas information science library science communication medical informatics using whole number counting system researchers worked groups generally productive terms producing papers citations however using fractional counting researchers worked groups generally productive findings need interpreted cautiously however authors produce academic articles within field may publish fields leave academia contribute society ways
naturally occurring bio molecular machines work every living cell display variety designs yet development artificial molecular machines centers devices capable directional motion molecular motors scaled mechanical parts wheels axels pendants etc imitates macro machines even though physical properties essential devices inertia momentum conservation usable nanoworld environments alternative designs follow mechanical macromachines schemes use mechanisms developed evolution biological molecules take advantage specific conditions nanoworld besides adapting actual biological molecules purposes nano design reduces potential dangers nanotechnology products may pose demonstrate assembly application one bio enabled construct semi artificial molecular device combines naturally occurring molecular machine artificial components enzymology point view construct designer fluorescent enzyme substrate complex put together perform specific useful function assembly definition molecular machine contains one yet integration engineered part fluorescent dual hairpin directs new task labeling dna damage construct assembles mer dna enzyme vaccinia topoisomerase vacc topo machine uses material fabricate two fluorescently labeled detector units figure one units green fluorescence carries vacc topo covalently attached end another unit red fluorescence free hairpin terminal units short lived quickly reassemble back original construct subsequently recleaves absence dna breaks two units continuously separate religate cyclic manner tissue sections dna damage topoisomerase carrying detector unit selectively attaches blunt ended dna breaks dnase type breaks fluorescently labeling second enzyme free hairpin formed oligonucleotide cleavage ligate blunt ended break dnase type breaks dna ligase present solution dna ligase added tissue section solution containing dna blunt ended breaks ligase reacts dna ends forming semi stable enzyme dna complexes blunt ended hairpins interact complexes releasing ligase covalently linking hairpins dna thus labeling blunt ended dna breaks development exemplifies new practical approach design molecular machines provides useful sensor detection apoptosis dna damage fixed cells tissues
preeclampsia hemolysis elevated liver enzymes low platelet hellp syndrome impaired trophoblast invasion excessive fibrin deposition placental intervillous space associated fetal compromise however little information available whether modulation placental protease expression potentially causing impaired trophoblast invasion associated hellp syndrome total rna protein extracted placental tissue females hellp syndrome controls matched gestational age mrna expression matrix metalloprotease mmp tissue inhibitors metalloprotease timp urokinase type plasminogen activator receptor upar determined northern blotting protein expression mmp timp detected western blotting upa upar plasminogen activator inhibitor pai elisa patients hellp syndrome mrna expression mmp timp decreased whereas timp levels unchanged mmp upar mrna undetectable groups protein expression investigated proteolytic factors remained unchanged findings mrna level suggest decrease matrix remodeling placentae patients hellp syndrome compared control pregnancies although supported protein level
obesity insulin resistance recognised leading causes major health issues particularly diabetes type metabolic syndrome although obesity defined excess body fat frequently accompanied insulin resistance diabetes metabolic syndrome cardiovascular diseases molecular basis link obesity diseases yet clarified adipose tissue expresses various secretory proteins including leptin tumour necrosis factor alpha adiponectin may involved regulation energy expenditure lipid metabolism insulin resistance aim study provide overview metabolic alterations occurring insulin resistance well review biological roles adiponectin particularly regulation fatty acid oxidation insulin action adiponectin abundant gene product adipose tissue accounts total plasma protein plasma adiponectin level decreased obesity children adults negatively associated plasma insulin positively associated plasma triglycerides low levels adiponectin decreases fatty acid oxidation muscle recent data demonstrated adiponectin effects mediated interaction muscle hepatic receptors activation amp kinase cellular fuel gauge turn inhibits acetyl coa carboxylase increases fatty acid beta oxidation since available recombinant adiponectin human use direct effects human metabolism remain unknown hormone appears promising treatment obesity related metabolic disorders elsevier ltd rights reserved
background carbapenem resistant acinetobacter baumannii emerged important cause infection burn patients study aimed characterize antimicrobial susceptibility pattern determine prevalence oxacillinase metallo beta lactamase mbl genes type baumannii isolates obtained burn patients methods year period total nonduplicated isolates baumannii obtained burn patients hospitalized taleghani burn hospital ahvaz southwest iran testing antimicrobial susceptibility carried disk diffusion test screen mbl production double disk synergy mbl test performed presence bla oxa like bla oxa like bla oxa like bla oxa like bla vim bla imp bla spm bla ndm sought polymerase chain reaction pcr repetitive extragenic palindromic sequence based pcr carried determination isolates clonality results overall isolates carbapenem resistant polymyxin colistin ampicillin sulbactam effective agents vitro susceptibility rate respectively according double disk synergy test isolates mbl producers respectively furthermore isolates harbored bla oxa like positive bla oxa like however encoding genes detected bla vim bla imp bla spm bla ndm bla oxa like repetitive extragenic palindromic sequence based pcr revealed carbapenem resistant isolates belonged four clones including predominant clones conclusion rate carbapenem resistance high appeared bla oxa like bla oxa like contributed carbapenem resistance baumannii isolates result suggests two predominant clones baumannii spread among burn patients order prevent future dissemination resistant isolates among burn patients effective infection control plan necessary copyright published elsevier taiwan llc
background sudden arrhythmic death syndrome sads describes sudden death negative autopsy toxicological analysis cardiac genetic disease likely etiology objectives study investigated clinical utility combined yield post mortem genetic testing molecular autopsy cases sads comprehensive clinical evaluation surviving relatives methods evaluated expertly validated sads cases suitable dna median age years males underwent next generation sequencing using extended panel primary electrical disorder cardiomyopathy genes pathogenic likely pathogenic variants classified using american college medical genetics acmg consensus guidelines yield combined molecular autopsy clinical evaluation surviving families evaluated gene level rare variant association analysis conducted sads cases versus controls results clinically actionable pathogenic likely pathogenic variant identified cases main etiologies established catecholaminergic polymorphic ventricular tachycardia long syndrome respectively gene based rare variants association analysis showed enrichment rare predicted deleterious variants ryr combining molecular autopsy clinical evaluation surviving families increased diagnostic yield conclusions molecular autopsy electrical disorder cardiomyopathy genes using acmg guidelines variant classification identified modest realistic yield sads data highlighted predominant role catecholaminergic polymorphic ventricular tachycardia long syndrome especially ryr gene well minimal yield genes furthermore showed enhanced utility combined clinical genetic evaluation authors published elsevier behalf american college cardiology foundation
physiological toxicokinetic model developed inhaled propylene gas mouse rat human metabolism simulated occur liver richly perfused tissue group partition coefficients tissue air determined vitro using tissues mice rats humans tissues partition coefficients around adipose tissue displays times higher value partition coefficient blood air human half rodents accumulate organism barely male bcf mice male fischer rats parameters metabolism obtained gas uptake experiments maximum rates metabolism maxmo mol mice mol rats maxmo reached mice ppm rats ppm atmospheric pretreatment animals sodium diethyldithiocarbamate resulted almost complete inhibition metabolism species preliminary toxicokinetic data metabolism humans obtained one volunteer exposed constant concentrations ppm model used calculate blood concentrations steady state ppm blood values comparable across species mol mouse rat human respectively however corresponding rates metabolism differed dramatically mouse rat human repeated human exposure ppm air day days week concentrations venous blood simulated prediction demonstrates eliminated rapidly accumulate organism low exposure concentrations became obvious rate uptake blood inhalation limited blood flow lung rate metabolism limited blood flow metabolizing organs academic press
garden dormouse eliomys quercinus native european rodent species suffered significant contraction geographical range last decades species disappeared large parts central eastern europe considered extinct countries reviewed information available occurrence distribution species countries previously reported present past introductions outside native range also summarised garden dormouse considered extinct lithuania finland slovakia probably extinct belarus present single populations netherlands poland slovenia slovakia however monitoring necessary verify recent records species rare localised austria ukraine romania croatia regression germany flanders belgium czech republic latvia estonia garden dormouse occupied geographical range range south western europe stronghold species still common large parts portugal spain france italy however indications also countries species locally declining present knowledge explain extensive regression garden dormouse range central eastern europe probably result interaction different factors acting locally large scale related specific ecological requirements species strong need research determine reasons dramatic population geographical range contraction garden dormouse meanwhile important monitor species identify appropriate conservation measures
cdna clone ascorbate oxidase gene isolated non heading chinese cabbage brassica campestris ssp chinensis makino suzhouqing characterized sequence analysis showed high similarity sequence named bcao homologues plant species southern blotting indicated one nuclear gene encoded enzyme non heading chinese cabbage mrna level bcao gene leaves monitored real time pcr different developmental stages different stress conditions results showed expression bcao upregulated light bcao gene responded copper stress well inoculation alternaria brassicae expression bcao leaves increased general peaked post inoculation much higher expression later date cloning bcao gene enable understand function would provide useful information resistance breeding program non heading chinese cabbage
background limited accessibility providers may delay appropriate control asthma exacerbations objective study estimate contributors hospital emergency department visits among adults asthma focusing availability healthcare providers methods conducted pooled cross sectional analysis using asthma call back survey linked area health resource files employed multivariable logistic regression dichotomous outcomes hospitalization visits key covariates availability county level healthcare provider variables per persons number lung disease specialists including pulmonary care specialists allergy immunology specialists number hospitals number safety net facilities including rural health centers rhcs federally qualified health centers fqhcs number primary care physicians pcps results among adults proportions hospital visits visits respectively additional rhc reduced odds visit odds ratio patients cost barriers seeing pcp likely hospital visit without addition patients cost barriers seeing specialist likely hospital visit visit respectively without conclusions hospital visits among adults asthma partially related availability providers related financial barriers therefore financial support vulnerable asthma population might target policy makers interested reducing hospitalizations visits
surface characteristics cellular response titanium surfaces implanted calcium magnesium ions using plasma immersion ion implantation deposition piiid evaluated three different titanium surfaces analyzed resorbable blast media rbm surface blasted hydroxyapatite grit calcium ion implanted surface magnesium ion implanted surface surface characteristics investigated scanning electron microscopy sem surface roughness testing ray diffraction xrd auger electron spectroscopy aes human bone marrow derived mesenchymal stem cells cultured different surfaces initial cell attachment evaluated sem cell proliferation determined using mtt assay real time polymerase chain reaction pcr used quantify osteoblastic gene expression genes encoding runx type collagen alkaline phosphatase osteocalcin surface analysis reveal changes surface topography ion implantation aes revealed magnesium ions present deeper layers calcium ions calcium ion magnesium ion implanted surfaces showed greater initial cell attachment investigation cell proliferation revealed significant difference among groups days cultivation expression runx higher magnesium ion implanted surface expression osteocalcin lower calcium ion implanted surface conclusion ion implantation using piiid technique changed surface chemistry without changing topography calcium ion magnesium ion implanted surfaces showed greater initial cellular attachment
background dendritic cells dcs form key link innate adaptive immune responses aim study analyze presence distribution immature mature dcs gingival tissue samples obtained patients diagnosed aggressive periodontitis agp chronic periodontitis clinically healthy periodontium control group methods gingival tissue samples obtained patients agp aged years control group aged years per group collected two way analysis variance posterior fisher least significant difference test used observe differences means cells positively marked imdc cda mdc immunomarkers results imdcs numerous agp control groups statistically significant cells conversely mdcs visualized higher numbers agp control groups considering frequency immunostained cells number cells greater cda cells followed lesser number cells groups conclusions considering ability dcs regulate immunity dependent maturation results suggest predominance imdcs appears involved agp pathogenesis probably due lack ability induce immune cell activation studies necessary elucidate role maturation regulating immune responses periodontal disease
thioredoxin peroxidases tpxs play important role maintaining redox homeostasis protecting organisms accumulation toxic reactive oxygen species ros study isolated thioredoxin peroxidase gene schistosoma japonicum sjtpx open reading frame orf sjtpx encoding amino acids molecular weight kda isoelectric point quantitative real time reverse transcription polymerase chain reaction indicated sjtpx expressed different stages parasites highest expression day old worms orf sjtpx subcloned pet vectors expressed escherichia coli recombinant sjtpx rsjtpx expressed soluble protein good antigenicity demonstrated western blotting immunohistochemical analysis revealed sjtpx mainly localized tegument parasites mice vaccinated rsjtpx reduction worm burden reduction liver egg production compared control unvaccinated mice enzyme linked immunosorbent assay analysis demonstrated rsjtpx could induce high levels anti rsjtpx specific igg igg igga antibodies characteristic immune response cytokines detected flow cytometry increased rsjtpx taken together results suggest sjtpx antioxidant enzyme responsible protecting japonicum oxidative stress rsjtpx may represent potential vaccine candidate new drug target patients schistosomiasis
complications resulting impaired fracture healing major clinical implications fracture management strategies novel concepts taken developmental biology driven research strategies towards elaboration regenerative approaches truly harness complex cellular events involved tissue formation repair advances polymer technology better understanding naturally derived scaffolds given rise novel biomaterials increasing ability recapitulate native tissue environments coupled advances understanding stem cell biology technology opened new avenues regenerative strategies true clinical translatability advances provided impetus develop alternative approaches enhance fracture repair process provide update advances focus development novel biomimetic approaches bone regeneration translational potential
sequential importance sampling algorithms defined estimate likelihoods models ancestral population processes however algorithms based features models constant population size become inefficient population size varies time making likelihood based inferences difficult many demographic situations work modify previous sequential importance sampling algorithm improve efficiency likelihood estimation procedure still based features model constant size uses resampling technique new resampling probability distribution depending pairwise composite likelihood tested algorithm called sequential importance sampling resampling sisr simulated data sets different demographic cases cases divided computational cost two accuracy inference cases even one hundred study provides first assessment impact resampling techniques parameter inference using sequential importance sampling extends range situations likelihood inferences easily performed elsevier inc rights reserved
investigate presence genetic environment multiresistance gene cfr escherichia coli found domestic animals total coli isolates collected pigs chickens ducks screened pcr cfr gene location cfr gene determined southern blotting transferability cfr gene tested conjugation transformation regions flanking cfr gene sequenced modified random primer walking strategy location cfr promoter sequence analysed mapping cfr transcription start site using rapid amplification cdna ends race single strain nasal swab pig harboured cfr gene southern blotting indicated cfr gene located approximate plasmid designated pec cfr carrying segment sequence identical cfr harbouring plasmid pscfs flanked two elements orientation transposition created new hybrid promoter region part left inverted repeat like sequence part original cfr upstream region best knowledge first report cfr gene naturally occurring coli strain continued surveillance presence cfr gene gram negative bacteria domestic animal origin warranted
receptor advanced glycation end products rage thought expressed ubiquitously various protein isoforms objective use northern blotting immunoblotting sensitivity glycanase digestion survey rage isoforms expressed cell lines mouse tissues order obtain comprehensive view rage expressome pulmonary rage mrna smaller cell line tissue rage mrna three anti rage antibodies recognized three distinct rage epitopes used protein studies alpha lung expressed three predominant protein isoforms apparent molecular masses kda four isoforms kda alpha isoforms expressed exclusively lung heart ileum kidney expressed kda isoform whereas aorta pancreas expressed kda isoform alpha isoforms absent tissue extracts prepared rage mice cell lines expressed kda isoform subset expressed kda isoform alpha lung rage appeared contain two linked glycans tissue cell line rage isoforms completely insensitive pngase digestion thus numerous rage protein isoforms detectable tissues cell lines canonical transmembrane soluble rage appear expressed solely lung non pulmonary tissues cell lines regardless source tissue express distinct rage protein isoforms containing terminal epitope aes rage epitope encoded alternate exon lacking epitope
major question cell biology concerns biophysical mechanism underlying delivery newly synthesized macromolecules specific targets within cell recent modeling paper investigated phenomenon context vesicular delivery passant synapses neurons bressloff levien phys rev lett shown reversibility vesicular delivery synapses could play crucial role achieving uniformity distribution resources throughout axon consistent experimental observations elegans drosophila work generalize previous model investigating steady state vesicular distributions cayley tree disk sphere show irreversible transport tree branching increases rate decay steady state distribution vesicles hand steady state profiles reversible transport similar case case higher dimensional geometries consider two distinct types radially symmetric microtubular network continuum discrete set continuum case model motor cargo dynamics using phenomenologically based advection diffusion equation polar spherical coordinates hand discrete case derive population model stochastic model single motor switching ballistic motion diffusion geometries find reversibility vesicular delivery target sites allows uniform distribution vesicles provided cargo carrying motors significantly slowed cargo case characterize loss uniformity function dispersion velocities
background stem cell factor scf implicated many disease processes characterized tissue remodelling fibrosis growth factor scf evaluated rat model nephrotoxic serum nephritis ntn characterized early inflammation followed later tissue fibrosis methods ntn induced male wistar kyoto rats using rabbit anti rat glomerular basement membrane antibodies animals sacrificed days per group rats kidneys immunostained marker inflammation scf kit mast cell tryptase markers fibrosis collagens iii alpha sma changes scf protein mrna content evaluated western blotting northern blotting respectively results ntn kidney levels immunoreactive scf scf receptor kit significantly higher glomerular tubular interstitial compartments mast cells barely detectable ntn control rat sections double immunostaining showed localization scf alpha sma scf receptor positive cells immunostainable scf protein compartments glomerular tubular interstitial showed positive linear correlation serum creatinine proteinuria glomerulosclerosis score interstitial fibrosis scores using multivariate analysis immunostainable tubular scf predictor glomerular sclerosis immunostainable glomerular scf predicted tubular atrophy increased scf immunostain consequence altered transcription fall scf mrna determined northern blotting western blotting ntn kidney homogenates revealed two bands scf kda band decreased kda band increased throughout study conclusion results highlight potential role scf receptor remodelling process ntn kidney upregulation scf may involve translational mechanism soluble scf protein kda derived transmembrane scf protein proteolytic cleavage immunohistochemical staining cells ntn kidneys warrants evaluation nature cells context inflammatory well fibrotic processes copyright karger basel
background lysophosphatidic acid lpa sphingosine phosphate lipid mediators bind protein coupled receptors study signaling responses lpa examined parallel three human prostate cancer cell lines lncap methods receptor expression assessed pcr northern blotting immunoblotting cellular responses mediators studied proliferation assays phosphoprotein immunoblotting phospholipid metabolism assays results cell lines express mrna lpa receptors lncap proliferate response lpa epidermal growth factor egf phorbol myristate acetate pma lpa induce activation erks egf pma activate erks lncap akt activated egf lpa akt constitutively active lncap egf lpa stimulates phosphorylation fak phosphorylated response lpa lncap lpa stimulate phospholipase pld activity varying extents different cell lines notably lipid mediators activate pld lncap lpa activates pld enhances cellular production lpa conclusions although lpa induce signal transduction prostate cancer cell lines studied proliferation response observed erk akt fak pathways activated responses lipid mediators pld activation likely contribute cellular outcomes prostate wiley liss inc
review focused creatine methyl guanidine acetic acid application form dietary supplement especially utilized athletes pronounced therapeutic potential also discussed present article supposed human body uses formation creatine phosphate pcr necessary muscular work source energy effects supplemented dynamics methionine cycle related metabolic pathways fully explained yet review focused description affects caused application human body metabolism already application small amounts rapidly increases levels thiodiglycolic acid tdga urine supplementation phenomenon serve sensitive marker disturbance metabolic pathways units thiolic compounds strong differences initial terminal tdga levels urine indicate disturbed equilibria redox processes catalyzed folates vitamin theories explanation effects described manuscript nevertheless similarly metabolic studies results significantly affected probands individual responses reflect individual genetic makeup various methods voltammetric generally electrochemical chromatographic mass spectrometric enzymatic etc frequently utilized determination discussed compounds common laboratories reported
polymeric nanoparticulate carriers play important role holding significant potential development novel immunomodulatory agents easily taken antigen presenting cells allow enhanced antigen stability better immunogenicity immunostimulatory effect sustained controlled release antigen target sites better information vital understanding mechanism action interaction vectors apcs dendritic cells antigen release kinetics immunomodulatory effects improved knowledge vivo fate distribution needed collectively would speed rational strategies nanoparticles carriers vaccines protein antigens evolution innovative adjuvants protein dna immunizations exciting growing zone immunology may enhance clinical outcomes many infectious non infectious diseases review summarizes recent advances nano vaccinology polymeric especially biodegradable carriers methods preparation surface modification interaction antigen presenting cells release antigens kinetics mechanism delivery vaccines via non invasive routes
objectives extended spectrum beta lactamase esbl per initially disseminated among pseudomonas aeruginosa strains turkey despite reports european countries strains detected greece describe first bla per positive aeruginosa isolates greece genetic environment methods january december consecutive non duplicate aeruginosa isolates reduced susceptibility resistance ceftazidime mic screened esbl production modified boronic acid based double disc synergy test phenotypically esbl positive isolates subjected agar dilution pfge multilocus sequence typing mlst broad spectrum bla genes identified pcr sequencing plasmid analysis conjugation experiments performed location bla per gene detected southern blotting genetic environment characterized using inverse pcr results five isolates phenotypically positive esbl production exhibited resistance cefepime ceftazidime aztreonam meropenem carried bla per gene mlst showed belonged sequence type belongs international clonal complex four isolates pfge pattern southern blotting revealed chromosomal location bla per gene analysis bla per flanking regions showed identity transposon downstream upstream blaper upstream orfa gene ispa identified truncated insertion conclusions study confirmed presence per producing aeruginosa strains greece chromosomal location bla per part truncated transposon suggests clonal expansion rather horizontal gene transfer
objectives investigate presence genetic environment multiresistance gene cfr naturally occurring gram negative bacteria pigs methods total bacterial isolates florfenicol mics obtained nasal swabs individual pigs screened pcr known florfenicol resistance genes species assignment cfr carrying isolate based results gram staining colony morphology rdna sequencing biochemical profiling location cfr flor genes determined southern blotting regions flanking cfr gene sequenced modified random primer walking strategy results single proteus vulgaris isolate carried genes flor cfr detected study cfr carrying segment homology staphylococcal plasmid found inserted chromosomal fimd gene vulgaris segment flanked two elements located orientation believed played role integration process stability testing via inverse pcr approaches showed integrate entirely stable cfr carrying centre region plus one copy looped via mediated recombination conclusions best knowledge first report cfr gene naturally occurring gram negative bacterium surveillance monitoring cfr gene gram negative bacteria warranted respect food safety consumer protection
soil salinity serious problem worldwide reduces agricultural productivity trichoderma longibrachiatum shown promote wheat growth induce plant resistance parasitic nematodes whether plant growth promoting fungi enhance plant tolerance salt stress unknown determined effect plant growth promoting fungi wheat seedlings growth development salt stress investigated role inducing resistance nacl stress physiological biochemical molecular levels wheat seedlings inoculated strain compared non inoculated controls shoot height root length shoot root weights measured days old wheat seedlings grown either nacl controlled setting without nacl number colonies isolated roots wheat seedlings salt stress relative water content leaves roots chlorophyll content root activity significantly increased accumulation proline content leaves markedly accelerated plant growth parameters content leaf malondialdehyde saline condition significantly decreased antioxidant enzymes superoxide dismutase sod peroxidase pod catalase cat wheat seedlings increased respectively application strain salt stress relative expression sod pod cat genes wheat seedlings significantly regulated results indicated strain ameliorated adverse effects significantly protecting seedlings salt stress growth period possible mechanisms suppresses negative effect nacl stress wheat seedling growth may due improvement antioxidative defense system gene expression stressed wheat plants
background matrix metalloproteinases mmps large family regulatory enzymes function extracellular matrix degradation facilitate diverse range cellular processes despite significant focus activities mmps human disease lack substantial knowledge regarding normal physiological roles role regulating aspects stem cell biology freshwater planarian schmidtea mediterranea mediterranea excellent system study robust nearly unlimited regeneration guided population mitotically active stem cells termed neoblasts results characterized mmps context planarian stem cells specifically exploring role mediterranea mmpb using situ hybridization available functional genomic tools observed mmpb expressed dorsoventral muscle cells loss results reduction animal size accompanied decrease mitotic cells suggesting plays unique role regulating stem cell proliferation conclusions novel findings study bring light unique critical roles muscles play regulating neoblast function broadly highlight importance mmps stem cell biology developmental dynamics wiley periodicals inc
colorectal cancer crc one common forms cancer worldwide familial adenomatous polyposis fap accounts approximately crcs adenomatous polyposis syndromes divided familial adenomatous polyposis fap classic fap attenuated familial adenomatous polyposis afap mutyhassociated polyposis map nthl associated polyposis nap polymerase proofreading associated polyposis ppap polyposis syndromes genetics clinical manifestation disease varies cases clinical diagnosis fap might molecularly show different diagnosis review examines different aspects adenomatous polyposis syndromes genetics clinical manifestation disease addition genotype phenotype modifier alleles fap discussed new technology made possible diagnose apc mutation negative patients respective syndromes still remain many molecularly undiagnosed adenomatous polyposis patients indicating remain causative genes discovered today technology expected identified near future knowledge role modifier alleles fap contribute improved pre symptomatic diagnosis treatment new novel mutations continually discovered genes already associated disease new genes discovered associated adenomatous polyposis search modifier alleles fap made priority
glycans play essential role biological process associated age gender body mass parameters caucasian populations whereas study reported chinese populations investigate correlation glycan structures metabolic syndrome mets components conducted population based study chinese han individuals replication study performed unrelated individuals croatian island korcula prominent observation consistent positive correlations different forms triantennary glycans negative correlations glycans containing core fucose mets components including bmi sbp dbp fasting plasma glucose fpg simultaneously significant differences number glycan traits also detected normal abnormal groups bmi fpg respectively multivariate analysis level monosialylated glycans structure loadings correlated mets related risk factors especially sbp structure loadings results presented showing variations composition glycome human plasma could represent alternations human metabolism could potential biomarkers mets
understanding relationship incursions insect pests established populations critical implementing effective control studies genetic variation provide powerful tools examine potential invasion pathways longevity individual pest outbreaks major fruit fly pest eastern australia queensland fruit fly bactrocera tryoni froggatt subject significant long term quarantine population reduction control measures major horticulture production areas southeastern australia species southern range limit previous studies employed microsatellite markers estimate gene flow populations across region study used independent genetic marker mitochondrial dna mtdna sequences screen genetic variation established adjacent outbreak populations southeastern australia study period favorable environmental conditions resulted multiple outbreaks appeared genetically distinctive relatively geographically localized implying minimal dispersal simultaneous outbreaks populations established regions found occur much larger areas screening mtdna female lineages proved effective alternative genetic tool assist understanding fruit fly population dynamics provide another possible molecular method could employed better understanding ecology evolution pest species
representing important greenhouse gas nitrous oxide emission cultivated land hot topic current climate change research study examined influences nitrogen fertilisation temperature soil moisture ammonia monooxygenase subunit amoa gene copy numbers emission characteristics experimental observation fluxes based static chamber gas chromatographic method ammonia oxidising bacteria aob ammonia oxidising archaea aoa gene copy numbers different periods measured real time polymerase chain reaction pcr results indicated rain fed potato field source average annual emission approximately kgn year emissions increased significantly increase fertilisation temperatures degrees soil volumetric water content crop rotation appreciably decreases emissions compared continuous cropping rain fed potato fields significant correlation fluxes aob copy numbers implied emissions primarily controlled aob rain fed potato fields research important theoretical practical value understanding emissions rain fed dry farmland fields
purpose review review discuss basic fundamentals perform molecular imaging better understand underlyingmechanisms contributing cardiovascular disease report findings molecular imaging combines molecular biology vivo imaging molecular probes used target discrete biological processes cell death inflammation angiogenesis probes emit signals detected traditional imaging systems disease processes manifest individuals different ways molecular imaging may emerge important strategy delivering precision medicine summary molecular imaging powerful tool may help physicians provide personalized care near future
background become increasingly apparent trophectoderm blastocyst stage much mosaic appreciated whether preimplantation genetic screening pgs utilizing single biopsy teb reliably determine embryo ploidy therefore increasingly questioned parallel methods reason established mathematical models assess probabilities false negative false positive results average cell biopsy approximately cell study collaborative effort investigators center human reproduction new york city center studies physics biology brivanlou laboratory stem cell biology molecular embryology latter two rockefeller university new york city results models revealed even best case scenario assuming even distribution mosaicism since mosaicism usually clonal highly unlikely scenario biopsy least cells would required reach minimal diagnostic predictability single teb conclusions currently performed single teb therefore mathematically incapable reliably determining whether embryo transferred discarded since single teb currently performed apparently representative complete study thus raises additional concern clinical utilization pgs
immunotherapy recently emerged fourth pillar cancer treatment joining surgery radiation chemotherapy early immunotherapies focused accelerating cell activity current immune checkpoint inhibitors take brakes anti tumor immune responses successful clinical trials monoclonal antibodies immune checkpoint inhibitors opened new avenues cancer immunology however failure large subset cancer patients respond new immunotherapies led intensified research combination therapies predictive biomarkers summarize development blockade immunotherapy current issues clinical use
diclofenac dcf common anti inflammatory pharmaceutical often detected waste wasters effluents surface waters recently dcf included watch list substances requires environmental monitoring member states dcf also known harmfully affect several environmental species already concentrations favor dcf elimination due sludge adaptation longer hrts could significantly increase elimination dcf biological wastewater treatment bioaugmentation could used enhance dcf elimination however requires research microbial communities able degrade dcf also research needed gain information deconjugation processes biotic abiotic transformation nature transformation products elsevier ltd rights reserved
analytical method determination beta hydroxyethoxyacetic acid heaa main urinary metabolite dioxane developed validated presented method involves liquid liquid extraction hem urine samples followed silylation subsequent analytical separation detection using method characterized simple fast sample preparation combination robust chromatography use isotope dilution analysis enables efficient compensation matrix related effects analyte losses due sample workup excellent reliability reproducibility method demonstrated good accuracy precision data within day precision day day precision ranged respectively mean relative recovery method found lod loq hem determined respectively summary presented analytical method well suited used routine biomonitoring occupational exposure dioxane elsevier rights reserved
genetic variation lays foundation diversity enables humans adapt changing environments order nucleotides adenine guanine cytosine thymine deoxyribonucleic acid dna molecules nuclear chromosomes mitochondrial dna mtdna plays important role normal cell division tissue development reproduction susceptible alteration large number random inherited environmental events variations range change single nucleotide duplication entire chromosomes single nucleotide polymorphisms major source human heterogeneity variations alter phenotypes adversely impact growth development health include copy number variations aneuploidies structural alterations deletions translocations inversions duplications insertions mutations mtdna addition dna rearrangements somatic cells underlie uncontrolled cell growth found cancer article explores mechanisms variations dna arise impact changes human health
phycocyanobilin ferredoxin oxidoreductase pcya catalyzes proton coupled four electron reduction biliverdin alpha two vinyl groups produce phycocyanobilin essential chromophore phytochromes cyanobacteriochromes phycobiliproteins previous site directed mutagenesis studies indicated fully conserved residue plays critical role bonding network permits proton transfer exploit ray crystallography enzymology molecular dynamics simulations understand functional role invariant histidine structures variants pcya reveal conserved buried water molecule bridges catalytically essential required activity despite distinct conformations glu gln variants retain reasonable activity variant inactive suggesting smaller residues may generate cavities increase flexibility thereby reducing enzymatic activity molecular dynamic simulations reveal crucial active site residue asp dynamic compared wild type pcya two variants supporting conclusion ala mutation increased flexibility active site elsevier inc rights reserved
antimicrobial peptides central effector molecules skin immunology functions antimicrobial peptides skin diseases include ability act cytokines growth factors driving disorders psoriasis rosacea well action natural antibiotics control bacteria influence diseases atopic dermatitis acne
phytophthora capsici inflicts damage numerous crop plants secreting series pectinase including pectate lyase pel report pectate lyase gene pcpel genomic library highly virulent capsici strain pcpel identified open reading frame encoding protein amino acids predicted amino terminal signal sequence amino acids predicted protein pcpel calculated molecular mass kda value analysis amino acid sequence suggested member polysaccharide lyase family shows pectate lyase activity moreover heterologous expression pcpel pichia pastoris produced proteins molecular mass kda likely due differential glycosylation yeast western blotting northern blotting analysis pcpel strongly expressed interaction capsici host plant suggesting involvement process host infection role pcpel cell wall disassembly host parasite interaction discussed
introduction identification bcr abl expression defining leukemogenic event chronic myeloid leukemia cml introduction bcr abl tyrosine kinase inhibitors revolutionized disease management leading reduction mortality rates accordingly increase estimated prevalence cml case report based medical records clinical follow authors present case philadelphia chromosome positive cml patient developed resistance imatinib quantitative reverse transcription polymerase chain reaction testing revealed bcr abl mutation discussion conclusions first report describing new bcr abl kinase domain mutation might associated resistance imatinib approximately patients treated imatinib discontinue treatment due resistance intolerance bcr abl mutations detected far conferring variable degrees drug resistance consequent clinical therapeutic prognostic impact
genetically dystonic rat jfl autosomal recessive model generalized dystonia without cerebellectomy rat dies prior postnatal day locus mapped region chr candidate genes screened semi quantitative pcr southern blotting genomic dna sequencing identified long terminal repeat portion intracisternal particle element inserted intron atcay gene encodes caytaxin northern western blotting quantitative real time pcr defined atcay allele rats atcay hypomorphic establish framework functional studies caytaxin developmental expression rat atcay transcript analyzed northern blotting relative quantitative multiplex real time pcr qrt pcr situ hybridization multiple tissue northern blot three atcay transcripts identified brain none present heart spleen lung liver muscle kidney testis multiple time point northern blot three transcripts present cerebellum embryonic day postnatal day months early development relative proportion smallest transcript increased qrt pcr performed total rna cerebral cortex striatum thalamus hippocampus cerebellum transcript levels peaked hippocampus increased linearly cerebellum showed minimal developmental regulation cerebral cortex radioactive situ hybridization localized atcay transcript seemingly neuronal populations brain cerebellum atcay transcript present molecular purkinje granular layers transcript density molecular layer peaked background previous biochemical behavioral electrophysiological studies rat data compatible vital role caytaxin development neurophysiology cerebellar cortex elsevier rights reserved
pyrroloquinoline quinone pqq influences energy related metabolism neurologic functions animals mechanism action involves interactions cell signaling pathways mitochondrial function however little known response pqq humans using crossover study design subjects females males ingested pqq added fruit flavored drink two separate studies study pqq given single dose pqq multiple measurements plasma urine pqq levels changes antioxidant potential based total peroxyl radical trapping potential thiobarbituric acid reactive product tbar assays made throughout period study pqq administered daily dose pqq measurements included indices inflammation plasma reactive protein interleukin levels standard clinical indices cholesterol glucose high density lipoprotein low density lipoprotein triglycerides etc nuclear magnetic resonance estimates urinary metabolites related part oxidative metabolism standard clinical indices normal altered pqq supplementation however dietary pqq exposure study resulted apparent changes antioxidant potential based malonaldehyde related tbar assessments study pqq supplementation resulted significant decreases levels plasma reactive protein urinary methylated amines trimethylamine oxide changes urinary metabolites consistent enhanced mitochondria related functions data among first link systemic effects pqq animals corresponding effects humans authors published elsevier inc rights reserved
lesch nyhan syndrome lns linked recessive disorder purine metabolism caused mutation omim presence diagnostic triad signs self injurious behavior sib results pedigree analysis novel molecular biology genetic testing confirms diagnosis lns level hypoxanthine guanine phosphoribosyl transferase hprt enzyme activity patients develop neurological neurocognitive neuromotor symptoms along sib described case year old boy diagnosed lns boy displayed sib biting lips fingers cerebral venous sinus thrombosis caused lns
bone dynamic tissue whose remodeling throughout life orchestrated repeated cycles destruction mediated osteoclasts rebuilding osteoblasts current understanding osteoclast biology largely relied generation knockout mice exhibiting abnormal bone phenotype provided better understanding osteoclast biology key proteins support osteoclast function however mouse models alone provide integrated view protein networks post translational modifications might important osteoclast function past years number based quantitative methods developed investigate complexity biological systems review summarize approaches contributed understanding osteoclast differentiation function
four black fly species simulium striatum species group recorded thailand species morphologically highly similar developmental stages except number arrangement pupal gill filaments study used multiple characters sources including morphology cytology molecular biology ecology test hypothesis conspecificity quinquestriatum shiraki nakhonense takaoka suzuki chiangmaiense takaoka suzuki molecular study based cytochrome oxidase subunit coi unable separate taxa contrast elongation complex protein ecp sequences clearly differentiate quinquestriatum chiangmaiense nakhonense however latter two taxa could differentiated based molecular dna sequences simulium chiangmaiense nakhonense also similar larval habitat characteristics undifferentiated polytene chromosome banding patterns morphological examination number arrangement pupal gill filaments found number intermediate forms therefore chiangmaiense nakhonense apparently biological species polymorphic number arrangement gill filaments thus synonymized chiangmaiense nakhonense
telomeres play crucial roles maintenance genome integrity control cellular senescence eukaryotic telomeres transcribed generate telomeric repeat containing rna terra persists heterogeneous nuclear rna developmentally regulated however precise function regulation terra normal cancer cell development remains poorly understood show terra accumulates highly proliferating normal cancer cells forms large nuclear foci distinct previously characterized markers dna damage replication stress using mouse model medulloblastoma driven chronic sonic hedgehog shh signaling terra rna detected tumor adjacent normal cells using rna fluorescence situ hybridization fish northern blotting rna fish revealed formation terra foci terfs nuclear regions rapidly proliferating tumor cells normal developing cerebellum terra aggregates could also detected highly proliferating zones progenitor neurons shh could enhance terra expression purified granule progenitor cells vitro suggesting proliferation signals contribute terra expression responsive tissue terra foci colocalize gamma hax foci promyelocytic leukemia pml cajal bodies mouse tumor tissue also provide evidence terra elevated variety human cancers findings suggest elevated terra levels reflect novel early form telomere regulation replication stress cancer cell evolution terra rna aggregates may form novel nuclear body highly proliferating mammalian cells
prominent roles regulation gene expression important understand levels krupple like transcription factors change germ cells spermatogenesis using immunological techniques found factors decreased sharply meiosis declined leptotene pachytene transition whereas fell somewhat later spermatocytes progressed beyond early pachytene stage reappeared period round spermatids transition pachytene stage accompanied loss normal mrna appearance prevalent variant well characterized shown pachytene specific transcript contains long unspliced sequence first intron sequence inhibits expression reporter probably many short open reading frames second testis specific transcript spermatids also reported previously like variant compromised translationally confirmed northern blotting variants account major testis transcripts thus unexpected decline protein face continuing transcription explained large part poor translation novel testis transcripts part work also identified five additional minor spi cap sites rapid amplification cdna ends including trans spliced rna originating glcci gene
melatonin affects variety physiological processes including circadian rhythms cellular redox status immune function importantly melatonin significantly influences cell mediated immune responses crucial protect mammals cancers infections associated pathogenesis many autoimmune diseases review focuses current understanding significance melatonin cell biology beneficial effects melatonin cell response based diseases addition expressing membrane nuclear receptors melatonin cells four enzymes required synthesis melatonin produce high levels melatonin meanwhile melatonin highly effective modulating cell activation differentiation especially treg cells also memory cells mechanistically influence melatonin cell biology associated membrane nuclear receptors well receptor independent pathways example via calcineurin several cell signaling pathways including erk ebp alpha involved regulatory roles melatonin cell biology modulation cell responses melatonin exerts beneficial effects various inflammatory diseases type diabetes systemic lupus erythematosus multiple sclerosis findings highlight importance melatonin signaling cell fate determination cell based immune pathologies
purpose evaluate characteristic multidetector findings peritoneal tuberculous cold abscesses patients methods morphological characteristics peritoneal cold abscesses patients male female age range years retrospectively evaluated infection histologically proven acid fast bacilli afb smear culture polymerase chain reaction pcr histopathological specimen diagnosis results seventeen abscesses present right perihepatic space left subphrenic space right subphrenic space pelvic cavity left perihepatic space right lower quadrant abscess contents ranged hounsfield units internal septa central necrotic lymphadenopathy coinfections organs observed infection histopathologically confirmed surgical specimens patients patients revealed positive pcr results peritoneal fluid ten patients recent history peritonitis ascites conclusion peritoneal cold abscesses commonly found right perihepatic subphrenic spaces revealed higher density internal content frequent internal septa central necrotic lymphadenopathy high coinfections organs
different types ketorolac ester prodrugs incorporating tert butyl benzyl heptyl diketorolac heptyl dkh promoieties synthesized comparison percutaneous penetration prodrugs characterized according melting point capacity factor lipophilicity solubility ethanol buffer enzymatic hydrolysis vitro skin permeation hair follicle accumulation vivo skin tolerance interactions prodrugs esterases predicted molecular docking equimolar suspensions saturated solutions ethanol buffer employed applied dose prodrugs exhibited lower melting point ketorolac lipophilicity increased following order ketorolac dkh prodrugs rapidly hydrolyzed parent drug esterase medium skin homogenate plasma exhibiting higher degradation rates exhibited highest skin permeation followed flux exceeded ketorolac fold twofold respectively dkh improve ketorolac permeation exhibited sustained release behavior revealed selective absorption follicles threefold greater follicular uptake compared ketorolac dkh slightly significantly increased transepidermal water loss tewl consecutive administration days whereas ketorolac exhibited influence tewl according experimental results concluded optimal balance lipophilicity aqueous solubility important design successful prodrug acceptable skin tolerance safe application also important consideration wiley periodicals inc
investigated presence ectoparasites hemoparasites side blotched lizards uta stansburiana across large part range measured parasitic infection related several key physiological indicators health blood samples collected lizards central arizona southern utah eastern oregon hemoparasites found individuals prevalence arizona utah oregon ectoparasites found individuals prevalence arizona utah oregon individuals infected hemoparasites ectoparasites found three states immunocompetence higher individuals infected hemoparasites ectoparasites body condition glucocorticoid levels reproductive investment related infection status study provides evidence parasitic infection associated active immune system wild reptiles may impose costs usually associated parasites
internet databases small molecules enzymatic reactions metabolism emerged useful tools food science database searching also introduced part chemistry enzymology courses food technology students resources support search information single compounds facilitate introduction secondary analyses large datasets information retrieved databases searching compound name structure annotating help chemical codes drawn using molecule editing software data mining options may enhanced navigating network links cross links databases exemplary databases reviewed article belong two classes tools concerning small molecules including general specialized databases annotating food components tools annotating enzymes metabolism problems associated database application also discussed data summarized computer databases may used calculation daily intake bioactive compounds prediction metabolism food components biological activity well prediction interactions food component drugs
five enzymopathies gpdh tpi pgi dpgm pgk deficiencies human red blood cells investigated using stoichiometric modeling approach metabolic pathway analysis elementary flux modes efms corresponding enzyme deficiency case analyzed terms functional capabilities available experimental findings reported literature related metabolic behavior human red blood cells compared results efm analysis control effective flux cef calculation novel approach allows quantification interpretation determined efms performed analysis enzymopathies glutathione reductase reaction found effective reaction terms cef value enzymopathies parallel known essential role red blood cells efficiency profiles enzymatic reactions upon degree enzyme deficiency obtained help cef approach basis future experimental studies cef analysis found promising analysis erythrocyte enzymopathies potential used modeling efforts human metabolism elsevier ireland ltd rights reserved
sericins glue proteins bombyx mori silk fibers produced middle silk gland msg cells stored lumen pushed spinneret surrounding fibroin fibers ser gene partly cloned anterior region msg years ago regarded sericin encoding gene however ser proteins appear major components cocoon proteins used northern blotting analyze expression three sericin genes ser ser ser msg third fifth instar larvae measured corresponding cdna levels competitive pcr results revealed ser gene expression dominated middle period fifth instar expression genes mainly observed middle fifth instar protein analysis demonstrated two ser proteins produced alternative splicing major coating proteins larval silk threads spun growing stages molecular components larval silk sericin completely different cocoon sericin difference may related functions two kinds silk fibers elsevier ltd rights reserved
allelopathy important ecological phenomenon influencing ecosystem dynamics currently gained attention due potential applications allelochemicals agriculture allelopathic interactions reported ecological relationships plants microorganisms species group studies relatively descriptive however without interconnected views molecules affect cell biology integrated environmental interactions present review provides overview history physiology ecological effects allelopathy special focus occurrence macro microorganisms ecological roles terrestrial aquatic environments attempted examine interconnections terrestrial aquatic systems relation production dynamics ecological effects allelochemicals discuss possible effects climate changes allelopathic interactions
introduction tuberculosis leading killer worldwide end strategy aims ending epidemic early accurate affordable diagnosis represents cornerstone achieve goal innovative strategies diagnostics introduced however ideal assay yet unavailable conventional methods remain necessary diagnosis unique properties nanoparticles nps allowed utilization detection via targeting disease biomarkers area covered around thirty five based assays partially fully characterized accuracy low cost short time result represent common properties proposed platforms nanodiagnostics encompass almost clinical aspects disease including active non tuberculous mycobacteria rifampicin resistant hiv infection latent extra pulmonary review summarizes state art knowledge nanodiagnostics last years special consideration given fabrication concepts detection strategies clinical performance using various clinical specimens potential nanodiagnostics fulfill need ideal mtb testing assessed expert commentary nanodiagnostics show promise ideal detection tools meet rigorous demands end epidemic
background mechanisms involved lung cancer progression poorly understood making discovery successful therapies difficult adaptor proteins play crucial role cancer link cell surface receptors specific intracellular pathways intersectin itsn important multidomain adaptor protein implicated pathophysiology numerous pulmonary diseases date role itsn studied methods human cells human tissue cells stable transfected myc itsn construct itsn used correlation biochemical molecular biology morphological studies addition scratch assay time lapse microscopy vivo xenograft tumor mouse metastasis assays performed results itsn prevalent protein lung tissue significantly downregulated human cells tissue restoring itsn protein level decreases cell proliferation clonogenic potential vivo studies indicate immunodeficient mice injected itsn cells develop less smaller metastatic tumors compared mice injected cells studies also show restoring itsn protein level increases interaction cbl ubiquitin ligase eps resulting enhanced ubiquitination eps oncoprotein subsequently downstream unproductive assembly eps msos complex leads impaired activation small gtpase rac impaired rac activation mediated itsn reorganizes cytoskeleton increased thick actin bundles focal adhesion complexes well collapse vimentin filament network favor decreased cell migration metastasis conclusion itsn induced eps ubiquitination impaired eps msos complex formation leading impaired activation rac novel signaling mechanism crucial abolishing progression metastatic potential cells
background aetiological spectrum acute encephalitis shows inter intra geographical variations aimed identify viruses cause infectious encephalitis sri lanka represents south asian population methods cross sectional study conducted among patients encephalitis meningoencephalitis admitted two tertiary care hospitals colombo cerebrospinal fluid serum tested conventional emerging encephalitogenic viruses specific nucleic acid amplification antibody assays used identify viruses plaque reduction neutralization test done confirm diagnosis west nile virus wnv results patients age ranged month years mean male female ratio viral aetiology identified included dengue virus japanese encephalitis virus varicella zoster virus wnv probable epstein barr virus none positive herpes simplex viruses cytomegalovirus screening bacterial aetiologies negative patients distinguishable clinical laboratory findings different viral aetiologies case fatality rate higher among patients identified viral aetiology conclusions viral aetiology identified quarter patients encephalitis dengue virus accounted majority
selective inhibitors histone deacetylase hdac emerging class pharmaceuticals due involvement hdac different pathways related neurodegenerative diseases cancer immunology herein synthesis ten new benzohydroxamic acids constructed employing tetrahydrobenzothiazepine core privileged pharmacophoric unit described first report synthesis isolation octahydrodibenzothiazepines octahydro benzocycloheptathiazepines used develop new class hdac inhibitors evaluations hdac inhibiting activity resulted identification cis hydroxycarbamoyl benzyl octahydrodibenzo thiazepine dioxide cis hydroxycarbamoyl benzyl trifluoromethyl octahydrodibenzo thiazepine dioxide highly potent selective hdac inhibitors activity low nanomolar range also show excellent selectivity enzymatic cellular levels furthermore four promising inhibitors subjected ames fluctuation assay revealed mutagenic effects associated structures
review summarizes major metabolic pathways drugs abuse tetrahydrocannabinol cocaine heroin morphine codeine humans including involvement isoenzymes knowledge may important predicting possible interactions xenobiotics understanding pharmaco toxicokinetic pharmacogenetic variations toxicological risk assessment developing suitable toxicological analysis procedures finally understanding certain pitfalls drug testing detection times drugs metabolites biological samples summarized implications presented data possible interactions drugs abuse xenobiotics inhibition induction individual polymorphic nonpolymorphic isoenzymes discussed
attempt identify novel inhibitors nad dependent dna ligase liga affected known resistance mutation adenosine binding pocket detailed analysis binding sites variety bacterial ligases performed analysis revealed several similarities adenine binding region kinases enabled virtual screen known kinase inhibitors screen thienopyridine scaffold identified shown inhibit bacterial ligase characterization structure enzymology revealed compound affected previously disclosed resistance mutation streptococcus pneumoniae liga leuphe subsequent medicinal chemistry program identified substitutions resulted inhibitor moderate activity across various gram positive bacterial liga enzymes elsevier ltd rights reserved
nanoscale spacing plasma membrane underlying cortical actin cytoskeleton profoundly modulates cellular morphology mechanics function measuring distance key challenge cell biology current methods dissecting nanoscale spacing either limit complex survey design using fixed samples rely diffraction limited fluorescence imaging whose spatial resolution insufficient quantify distances nanoscale using dual color super resolution sted stimulated emission depletion microscopy overcome challenge accurately measure density distribution cortical actin cytoskeleton distance actin cortex membrane live jurkat cells found asymmetric cortical actin density distribution mean width spatial distances measured maximum density peaks cortex membrane modally distributed mean values respectively taken together finite width cortex results suggest regions cortical actin closer membrane maximum others
fast growth human population forces produce food higher crop production also leads fast spread diseases plant pathology deploys wide range methods provide adequate solution disease losses case viroids therapeutic means control available therefore control strategies focused development reliable detection methods quickly exclude infected plant material although viroids smallest simplest plant pathogens identification detection straightforward viroid host combination specific reliable identification steps sampling final detection must performed accurately review several methods viroid detection various host plants discussed including advantages disadvantages even though relatively new molecular methods enable fast sensitive detection viroids combination different methods gives reliable identification techniques based nucleic acids may future viroid detection still replace biological indexing usually essential epidemiological aetiological studies
xenopus laevis intestine metamorphosis larval epithelial cells removed apoptosis adult epithelial stem cells appear concomitantly proliferate differentiate form adult epithelium thyroid hormone well established trigger remodeling regulating expression various genes including notch receptor study role notch signaling analyzed expression components including ligands dll jag receptor notch targets hairy metamorphosing intestine real time reverse transcription polymerase chain reaction situ hybridization immunohistochemistry show regulated natural induced metamorphosis tissue specific manner particularly hairy specifically expressed cells moreover upregulation hairy hairyb prevented treating tadpoles secretase inhibitor gsi inhibits notch signaling importantly induced regulation lgr adult intestinal stem cell marker suppressed gsi treatment results suggest notch signaling plays role stem cell development regulating expression hairy genes intestinal remodeling furthermore show organ culture experiments prolonged exposure tadpole intestine plus gsi leads hyperplasia secretory cells reduction absorptive cells findings thus provide evidence evolutionarily conserved role notch signaling intestinal cell fate determination importantly reveal first time important role notch pathway formation adult intestinal stem cells vertebrate development
background aims high glucose induced mesangial apoptosis fibrogenesis possibly involves reactive oxygen species ros formation activated mitochondrial stress investigated therapeutic effect antioxidant acetylcysteine nac cellular apoptosis matrix accumulation treated rat mesangial cells rmcs methods rmcs cultured media containing control glucose cellular apoptosis assayed tdt mediated dutp nick end labeling staining collagen transforming growth factor gene expression measured reverse transcriptase polymerase chain reaction northern blotting mitochondrial capacity intracellular ros generation assayed fluorescence microscopy flow cytometry respectively cellular atp production malondialdehyde mda formation determined luciferin luciferase reaction high performance liquid chromatography respectively cytochrome release caspase activation poly adp ribose polymerase cleavage assayed western blotting results treated rmcs displayed enhanced cellular apoptosis collagen gene expression fold increase reactions could significantly suppressed nac intracellular ros generation production atp mda caspase activities significantly increased treated rmcs effectively attenuated addition nac conclusion concluded nac prevents induced mesangial apoptosis fibrogenesis pathways reduction oxidative stress copyright karger basel
exploited potential cucurbits ectopic gene expression agroinfiltration simple commonly used method obtain transient expression foreign genes plants contrast vitro transformation techniques agroinfiltration used genetic modification mature plant tissues although cucurbits commonly used model plants molecular biology biotechnology studies date literature sources possibility transient gene expression mature cucurbit tissues research shown mature leaves luffa cylindrica luffa contrast cucurbit species successfully transiently transformed agrobacterium tumefaciens efficiently transformed luffa leaves reporter gene encoding beta glucuronidase gus gus activity transiently transformed leaf tissues detected within infiltration bacteria additionally shown activity transiently expressed gus gene monitored directly edta exudates collected cut petioles agroinfiltrated leaves results suggest luffa leaves useful plant expression system studies physiological biochemical processes cucurbits
hydroxyphenylacetate decarboxylase hpad cluster containing glycyl radical enzyme gre catalyses last step tyrosine fermentation clostridia generating bacteriostatic cresol respective activating enzyme hpad displays two cysteine rich motifs addition classical adenosylmethionine sam binding cluster cluster motif additional motifs also present glycyl radical activating enzymes postulated orthologues may use alternative sam homolytic cleavage mechanism generating putative amino carboxypropyl radical deoxy methylthio adenosine deoxyadenosyl radical methionine hpad produced codon optimized synthetic gene binds maximum two clusters revealed epr mossbauer spectroscopy enzyme catalyses turnover sam reducing conditions reaction products identified deoxyadenosine quenched form deoxyadenosyl radical methionine demonstrate deoxyadenosyl radical activating agent hpad cresol formation correlation production deoxyadenosine generation glycyl radical hpad therefore conclude hpad catalyses classical sam dependent glycyl radical formation reported without auxiliary clusters observation casts doubt suggestion containing auxiliary clusters catalyse alternative cleavage reaction detected glycerol dehydratase activating enzyme
incretin hormone glucagon like peptide glp exerts important functions controlling glucose energy homeostasis endogenous glp short half life due dpp mediated degradation renal clearance limits therapeutic use native glp shown previously immunoglobulin fragment fused glp glp structurally stable glp analog report non viral glp gene therapy strategy utilizing rep trans reb cis element system achieve site specific genomic integration purpose glp expression cassette fused rbe element injected rep plasmid muscles transgenic mice carrying aavs locus human chromosome rep protein mediated site specific integration demonstrated nested pcr dot blot southern blotting found approach reduced weight gain improved lipid profiles aavs mice high fat diet challenge observations reveal new glp therapeutic strategy apparent absence side effects may find applications diabetes treatment obesity prevention elsevier inc rights reserved
numerous patients anorectal malformations arms continue experience fecal incontinence constipation following surgical procedures one important factors influences defecation striated muscle complex smc wnt signaling regulates expression myogenic regulatory factors serve important role muscle development therefore present study aimed investigate expression pattern wnta protein immunohistochemistry western blot analysis mrna reverse transcription quantitative polymerase chain reaction qpcr smc arm model rats exposed ethylenethiourea immunostaining revealed expression wnta exhibits space time dependent changes developing smc arm model rat embryos immunohistochemistry demonstrated embryonic day wnta positive cells observed smc normal embryos expression levels gradually increased rat embryos developed similar changes wnta protein expression detected arm model rat embryos however expression wnta significantly reduced compared normal rat embryos western blotting qpcr also revealed lower expression levels wnta protein mrna respectively smc arms model rat embryos compared normal rat embryos data revealed expression wnta arm embryos notably reduced indicating potential role wnta maldevelopment smc patients arms
elucidation metabolism new therapeutics major task pharmaceutical companies great interest drug testing laboratories tatter particular need determine presence absence drugs metabolic products urine test misuse compounds commonly vitro animal models used mimic human metabolism produce potential targets amounts allowing method development alternative route based electrochemical reactions drugs reported allow generation selected metabolites utility approach doping control purposes demonstrated novel class anabolic agents termed selective androgen receptor modulators sarms arylpropionamide derived drug candidate subjected etectrochemical metabolism major phase metabolite resulting elimination substituted phenol residue identified vitro experiments generated characterised using liquid chromatography nuclear magnetic resonance spectroscopy high resolution high accuracy mass spectrometry metabolite included routine doping control procedures based liquid chromatography tandem mass spectrometry served reference compound doping control specimens
bifidobacteria exert beneficial effects hosts extensively used probiotics however due genetic inaccessibility bacteria little known mechanisms carbohydrate utilization regulation bifidobacterium breve strain jcm grow water insoluble yeast saccharomyces cerevisiae cell wall glucans ycwg recently considered potential prebiotics according results nuclear magnetic resonance nmr spectrometry ycwg composed highly branched beta glucans alpha glucans although ycwg composed beta glucans alpha glucans alpha glucans consumed breve strain abc transporter malefg pullulanase aapa genes transcriptionally upregulated metabolism insoluble yeast glucans suggesting potential involvement process nonsense mutation identified gene encoding abc transporter atp binding protein malk led growth failure ethyl methanesulfonate generated mutant yeast glucans coculture wild type strain mutant showed protein responsible import yeast glucans breakdown products rather export alpha glucancatabolizing enzymes characterization carbohydrate utilization mutant three revertants indicated mutation pleiotropic mutant could grow maltose glycogen dextrin raffinose cellobiose melibiose turanose propose insoluble yeast alpha glucans hydrolyzed extracellular pullulanase maltose maltooligosaccharides transported cell abc transport system composed malefg malk mechanism elucidated facilitate development breve water insoluble yeast glucans novel synbiotics importance general bifidobacterium strains genetically intractable coupling classic forward genetics next generation sequencing identified abc transporter atp binding protein malk responsible import insoluble yeast glucan breakdown products breve jcm demonstrated pleiotropic effects abc transporter atp binding protein maltose maltooligosaccharide raffinose cellobiose melibiose turanose transport addition transcriptional analysis propose insoluble yeast glucans broken extracellular pullulanase maltose maltooligosaccharides transported cell abc transport system composed malefg malk mechanism elucidated facilitate development breve water insoluble yeast glucans novel synbiotics
infections malignancies expected complications immunosuppressive therapy non specifically impairs cellular humoral immune responses renal transplant recipients infections usually frequent severe early post transplant period first year recent diagnostic methods molecular biology availability new antivirals antifungal antibiotic drugs made rapid diagnosis systematic preventive strategies much easier resulted significant reduction infections infectious death population however new infectious agents like polyomavirus hepatitis virus parvovirus well chigunkunya west nile others particular areas recently recognized responsible aggressive infections immunocompromised host malignancies also common transplantation due intensity duration immunosuppression skin cancers lymphoproliferative disorders common undoubtedly caused viral infections incidence non skin cancers also increased reduction immunosuppression treatment similar non transplant patients results usually poor cancer third cause death transplant recipients due anti proliferative anti tumoral properties incidence novo cancer significantly decreased patients receiving mtor inhibitors maintenance immunosuppression furthermore patients already diagnosed kaposi sarcoma recurrent skin cancers introduction mtor associated stabilisation regression malignant lesions association societe nephrologie published elsevier masson sas rights reserved
background neural tube defects induced abnormal factors vivo vitro development however molecular mechanisms neural tube defect induction related gene expression regulation still unknown objective compare differences gene expression normal embryos neural tube defects design time setting neural development study performed department neurobiology third military medical university chinese pla january october materials among adult kunming mice pregnant mice randomly evenly divided retinoic acid group normal control group retinoic acid produced sigma usa gene microarray amersham pharmacia company hong kong gene sequence provided incyte database usa methods retinoic acid administered prepare models neural tube defects corn oil similarly administered normal control group total rna extracted embryonic tissue two groups using trizol kit cdna microarray containing known genes used compare differences gene expression normal control group retinoic acid group embryonic day several differentially expressed genes randomly selected two groups northern blotting verify results cdna microarray main outcome measures morphological changes differential gene expression normal control group retinoic acid group results anatomical microscopy demonstrated intact closure brain formed normal mouse embryos days cerebral appearance full smooth surface spine intact however retinoic acid group days dead embryos morphological malformations typically included non closure top cranium abnormal changes metencephalon face cdna microarray analysis suggested changes expression seven different genes similar days downregulation nek lgfbp csfr psmc upregulation apoa study also indicated cdk expression downregulated retinoic acid group day results cdna microarray analysis partly confirmed northern blotting conclusion cdk nek lgfbp csfr psmc apoa may key factors retinoic acid induced neural tube defects
lignin combinatorial polymer comprising monoaromatic units linked via covalent bonds although lignin potential source valuable aromatic chemicals recalcitrance chemical biological digestion presents major obstacles production second generation biofuels generation valuable coproducts lignin monoaromatic units degradation lignin relatively well characterized fungi less well understood bacteria catabolic pathway enzymatic breakdown aromatic oligomers linked via aryl ether bonds typically found lignin reported bacterium sphingobium syk present ray crystal structures biochemical characterization glutathione dependent etherases lige ligf pathway crystal structures show enzymes belong canonical two domain fold glutathione binding site architecture glutathione transferase family mutagenesis conserved active site serine lige ligf shows whereas enzymatic activity reduced amino acid side chain absolutely essential catalysis results include descriptions cofactor binding sites substrate binding sites catalytic mechanisms aryl ether bonds account interunit linkages lignin understanding mechanism enzymatic aryl ether cleavage significant potential informing ongoing studies valorization lignin
family polyunsaturated fatty acids pufas found lipid classes includes pufas essential mammals whose deficiency associated multiple diseases multiple physiological actions pufas play crucial role normal human metabolism well maintenance healthy status clinical effects limited cardiovascular system also include maternal offspring health growth development immune system disorders cancer cognitive function psychological status multiple health organisations scientific societies recommend increasing food derived pufa intake also suggest patients documented coronary heart disease receive minimum day eicosapentaenoic acid docosahexaenoic acid preventive therapeutic effects pufas appear largely dependent dosages employed characteristics selected patients era personalised medicine time come move generic advice increase pufa intake evidence based approach characterised tailored indications pufa dietary supplement consumption approach require evaluation case case basis potential usefulness pufas taking consideration pleiotropic effects optimal dose given indication relation international guidelines potential interactions background therapy possible side effects differences genetics dietary response supplementation cost benefit ratio likely vary function differences range fish intake diet elsevier ireland ltd rights reserved
background aims apple polyphenol contains abundant procyanidins associated anti atherosclerosis cholesterol lowering effect aim study investigate whether apple procyanidins apcs feature therapeutic efficacy terms regressing atherosclerosis whether efficacy due mechanisms cholesterol lowering effect methods eight weeks atherogenic diet rabbits given normal diet another eight weeks normalize increased serum lipids level rabbits baseline group sacrificed stage control group subsequently fed normal diet eight weeks apcs group administrated day apcs addition normal diet serum lipids aortic intimal medial thickness imt serially examined resected aorta examined histologically molecular biology results aortic imt ultrasonography lipid accumulation area examined using sudan staining significantly reduced apcs group compared control group serum lipid profiles different groups immunohistochemistry showed significantly decreased staining oxidative stress marker significantly increased staining atp binding cassette subfamily member abca apcs group western blotting pcr also showed increased expression abca mrna protein apcs group conclusions study revealed apcs administration causes regression atherosclerosis apcs might hold promise anti atherosclerotic agent elsevier rights reserved
background senecavirus sva member family picornaviridae genus senecavirus recently identified single stranded rna virus closely related members cardiovirus genus sva originally identified cell culture contaminant associated disease first observed pigs idiopathic vesicular disease ivd vesicular disease sporadically observed swine debilitating significant due resemblance foreign animal diseases foot mouth disease fmd whose presence would economically devastating united states ivd disrupts swine production foreign animal diseases ruled identification characterization sva cause ivd help quickly rule infection foreign animal diseases methods developed characterized indirect elisa assay specifically identify serum antibodies sva viral protein expressed isolated purified coli used coat plates indirect elisa sera pigs without ivd symptoms well time course following animals infected farm analyzed determine antibody responses results antibody responses higher showed high affinity binding avidity elisa roc analysis sva elisa showed sensitivity specificity compared ifa quantitative elisa showed agreement negative samples positive samples days appearance clinical signs immune sera positive fmdv encephalomyocarditis virus porcine epidemic diarrhea virus antibodies cross react conclusions simple elisa based detection antibodies sva help differentially diagnose ivd due sva rule presence economically devastating foreign animal diseases
background insulin self administration burdensome produce dangerous hypoglycemia insulin gene therapy may improve simplify treatment diabetes mellitus rats metabolically responsive hepatic insulin gene therapy higt delivered adenovirus normalizes random blood sugars limited duration prolong glycemic control delivered metabolically regulated insulin transgene adeno associated virus aav methods administered increasing doses self complementary pseudotyped aav expressing glre xfur insulin transgene streptozotocin diabetic mice monitored blood sugar body weight also compared responses intraperitoneal glucose chow withdrawal assessed viral genomes liver southern blotting measured hepatic glycogen results glucose lowering required combination genomes aav capsid pseudotyping higt controlled glycemia diabetic mice year however glycemic responses variable approximately mice succumbed hypoglycemia approximately mice became hyperglycemic intraperitoneal glucose tolerance test blood sugars declined normal within min higt treated compared min control mice hypoglycemia common among higt treated mice fast however higt mice lost less weight either diabetic nondiabetic controls result increased water intake higt treatment reduced hepatic glycogen content fed mice conclusions studies demonstrate possibility long term glycemic correction following aav mediated higt mice however dose response relationship irregular metabolic responsiveness may less observed rats copyright john wiley sons ltd
recombinant proteins offer many therapeutic advantages unavailable traditional small molecule drugs need cellular versus chemical synthesis complicates production avenues producing therapeutic biologics continuously expanding developments biochemistry cell biology bioengineering fuel new discoveries promise safer efficient cheaper drugs consumers numerous approaches express recombinant proteins exist escherichia coli saccharomyces cerevisiae mammalian systems chinese hamster ovary cells cho widely utilized improvements production hosts focused novel expression cassettes cell line modifications engineering secretion pathways media design describe recent developments improving protein production coli cerevisiae cho systems compare recent advancements previous knowledge field expanding importance prevalence protein therapeutics improvements serve framework future discoveries
pki protein identified laboratory specific protein kinase inhibitor previously demonstrated pki poorly translated vivo acts promoting pkc degradation establishing feedback loop inhibition however understanding mechanisms expression pki regulated limited present work investigated mrna expression pki human tissues northern blotting pcr demonstrating highly expressed brain tissue moreover since computational analysis gene promoter region showed two sites box box similar consensus sequences gaga factors investigated ability bind proteins electrophoretic mobility shift assays showed gaga factors preferentially interacted box elements linked preferentially box sequence suggest interaction transcription factors box box could regulate transcription pki gene consequently expression pkc elsevier masson sas rights reserved
globally coastal waters emerged pool antibiotic resistance genes multiple antibiotic resistant microorganisms pathogenicity resistant microorganisms terms serotypes virulence genes made environment vulnerable current study underscores presence multiple antibiotic resistant pathogenic serotypes pathotypes escherichia coli predominant faecal indicator bacteria fib surface water sediment samples famous recreational beaches juhu versova mahim dadar girgaon mumbai faecal coliforms randomly selected isolates biochemically characterized serotyped antigen antibiogram phenotyped antimicrobial agents genotyped polymerase chain reaction virulence factors isolates belonged different serotypes predominant indicating remarkable diversity furthermore generated antibiogram profile revealed isolates multiple antibiotic resistant aminoglycoside sensitive coli isolates exhibited resistance penicillin extended penicillin quinolone cephalosporin classes antibiotic resistance antibiotics comparatively less antibiotic resistance indexing indicated isolates may rooted high risk source contamination preliminary findings revealed presence enterotoxin encoding genes stx stx specific enterohaemorrhagic coli shiga toxin producing coli heat stable toxin enterotoxin specific enterotoxigenic coli pathogenic serotypes thus government authorities environmental planners create public awareness adopt effective measures coastal management prevent serious health risks associated contaminated coastal waters
background aims infections common patients severe alcoholic hepatitis sah little information available predict development effects patients prednisolone advocated treatment sah increase susceptibility infection compared effects infection clinical outcomes patients treated without prednisolone identified risk factors development infection sah methods analyzed data patients enrolled double blind placebocontrolled trial evaluate efficacy treatment prednisolone daily pentoxifylline times day patients sah factorial design led patients receiving prednisolone treated pentoxifylline trial conducted united kingdom january february data development infection collected evaluations performed screening baseline weekly admission discharge days patients diagnosed infection based published clinical microbiologic criteria risk factors development infection effects day mortality evaluated separately patients treated prednisolone patients treated prednisolone using logistic regression pretreatment blood levels bacterial dna bdna measured patients results patients study infection baseline developed infections treatment patients developed infection treatment association pentoxifylline therapy risk serious infection infection treatment infection treatment infections classified serious frequent patients treated prednisolone odds ratio confidence interval association prednisolone therapy infection treatment however higher proportion patients receiving prednisolone developed infection treatment patients given prednisolone development infection associated increased day mortality patients sah treated prednisolone independent model end stage liver disease lille score high circulating bdna predicted infection developed within days prednisolone therapy independent model end stage liver disease white blood cell count patients receive prednisolone infection independently associated day mortality levels bdna conclusions patients sah given prednisolone greater risk developing serious infections infections treatment patients given prednisolone may offset therapeutic benefit level circulating bdna treatment could identify patients high risk infection given prednisolone data could used select therapies patients sah eudract current controlled trials isrctn
epidemiologic studies commonly use mercury level hair valid proxy estimate human exposure methylimercury mehg fish consumption study presents results yielded complete data set fish consumption habits levels edible fish resources corresponding accumulation hair gathered three distinct communities eastern canada one communities average hair concentration times less expected value based calculated daily oral exposure current knowledge mehg metabolism finding could explained differences specific genetic characteristics interactive effects dietary components
capillary electrophoresis used demonstrate individual molecules given enzyme support different catalytic rates order determine rate varies temperature determine activation energies individual beta galactosidase molecules channel peltier array temperature control device constructed temperature cell separately controlled array used control temperature central long capillary producing temperature gradient along length continuous flow single beta galactosidase molecule assays performed allowing measurement catalytic rates different temperatures arrhenius plots produced distribution activation energies individual beta galactosidase molecules found mol range mol
cancer currently treated combination therapies including chemotherapy believed suppress immune system combination immunotherapy chemotherapy correlates improved survival needs careful planning order achieve synergistic effect study demonstrated doxorubicin treatment cells resulted increased expression concordantly increased cell activation presence superantigen effect inhibited addition blocking antibody furthermore doxorubicin resulted decreased expression anti inflammatory cytokines tnf alpha finally cells urinary bladder cancer patients treated neoadjuvant regiment containing doxorubicin displayed increased expression conclude doxorubicin induces expression cells hence enhances antigen presenting ability vitro finding verified patients development tailored time dose schedules may increase effectiveness combining chemotherapy immunotherapy published elsevier inc
study reports detailed investigation human deoxynivalenol zearalenone zen vivo metabolism analysis urine samples obtained one volunteer following naturally contaminated diet containing zen period four days based mycotoxin intake concentrations mycotoxin conjugates urine mass balance established average rates excretion glucuronidation determined respectively investigation formed glucuronides revealed glucuronide main conjugation product besides glucuronide furthermore first time human urine third glucuronide detected fate ingested masked forms acetyl glucoside preliminary assessed mean excretion rate zen determined zen mainly present glucuronide form samples zen glucuronide directly determined exposure first time concrete figures become available excretion pattern zen glucuronides throughout day comparison total first morning urine samples urinary excretion rate total zen humans following exposure naturally contaminated food therefore valuable preliminary information obtained chosen experimental approach although study involved one single individual needs confirmed larger monitoring studies presented experiment contributes better understanding human zen vivo metabolism thereby supports advanced exposure risk assessment increase food safety examine relationship mycotoxins potentially associated chronic diseases future michael sulyok published elsevier ireland ltd rights reserved
zinc essential trace element required living organisms critical roles structural component proteins cofactor enzyme catalysis importance zinc human metabolism illustrated effects zinc deficiency include diminished immune response reduced healing neurological disorders furthermore nutritional zinc deficiency fatal newborn growing animals zinc deficiency commonly caused dietary factors several inherited defects zinc deficiency identified acrodermatitis enteropathica commonly described inherited condition found humans several cases reported disorder associated mutations hzip gene member slc family whose members encode membrane bound putative zinc transporters mutations members family different genes may account cases acrodermatitis defects hzip detected another inherited form zinc deficiency occurs lethal milk mouse mutation znt gene member slc family transmembrane proteins results impaired secretion zinc milk mammary gland similar disorder lethal milk mouse occurs humans cases studied changes znt orthologue hznt detected presence several minor phenotypic differences zinc deficiency humans mice suggests human condition caused defects genes yet identified taking account fact definitive tests zinc deficiency disorder undiagnosed plus recent identification multiple members scl slc likely mutations genes may underlie additional inherited disorders zinc deficiency
hallucinogenic tryptamine analogues important class drugs abuse naturally occurring chemically synthesized compounds japan psilocin psilocybin ingredients magic mushrooms methoxy diisopropyltryptamine meo dipt synthetic tryptamine seem particularly problematic due extensive abuse review focused human metabolism forensic toxicological analyses three tryptamine analogues humans psilocybin rapidly dephosphorylated form psilocin psilocin eventually conjugated form glucuronide hand meo dipt mainly metabolized via demethylation hydroxylation deisopropylation partly followed conjugation form sulfates glucuronides suitable hydrolysis therefore applied sensitive effective analysis metabolites analyzing psilocin psilocybin gas chromatography mass spectrometry derivatization necessary discriminative identification although meo dipt three major metabolites analyzed without derivatization trimethylsilyl derivatization provides improvement peak shapes intensities contrast liquid chromatography mass spectrometry liquid chromatography tandem mass spectrometry allow discriminate psilocin psilocybin without derivatization also directly analyze conjugated metabolites
development transgenic varieties interest rice developed simple efficient universal agrobacterium mediated transformation protocol mature seeds two indica jaya one japonica aromatic basmati varieties used explants present study agrobacterium tumefaciens strain eha carrying plasmid pbi selectable marker npt along reporter gene uida encoding beta glucuronidase gus successfully integrated rice genome without use acetosyringone sterile distilled water washing place cefotaxime elimination process used control excess growth agrobacterium material transformation germinated days cultivation basal medium germinated seeds transferred selection medium plain medium kanamycin produced two three primary tillers within weeks mesocotyls week old vitro grown plants taken cultured multiplication medium supplemented kanamycin within days produced secondary tillers five six tiller shoots produced process developed roots plain grew well transferred pots containing autoclaved soil vermicompost proportion transient expression gus observed tissues recipient plants integration transgene confirmed employing southern blotting real time pcr technique transformation protocol developed efficiently used across two major subspecies ecotypes asian rice cultivar oryza sativa
prevalence estimates fragile syndrome vary considerably systematic review meta analysis conducted provide accurate prevalence estimate disorder using primary publications pubmed embase cochrane library data pooled using bayesian fixed effects random effects models primary analyses assessed frequency full mutation premutation males females total population bias individuals intellectual disability female carriers premutation normal populations biased individuals intellectual disability based diagnosis polymerase chain reaction southern blotting sensitivity analysis included studies using diagnostic testing method conference abstracts sixty eight recorded observations provided data primary observations sensitivity observations analysis using random effects model frequency full mutation per males per females respectively total population premutation frequency per males per females respectively total population prevalence female carriers premutation normal population per sensitivity analyses resulted similar prevalence estimates wider heterogeneity prevalence estimates full mutation meta analysis lower previous reviews fragile syndrome epidemiological data wiley periodicals inc
short tandemrepeat str analysis primary tool forensic casework population data mutation rates strs important paternity testing forensic genetics however population data mutation rates strs han nationality based large samples still fully described china study allelic frequencies forensic parameters mutation rate str loci csfipo pentad vwa tpox penta fga based goldeneye dna system southern china han nationality among seven provinces investigated furthermore population stratification southern china han nationality among seven provinces established multidimensional scaling mds plot based genetic distances fst showed studied populations clustered two major groups however relationships among populations weak fst total cases mutation detected selected loci meioses average mutation rate loci estimated per meiosis mutation mainly single step paternal mutation rate higher maternal paternal mutation rate increases paternal age
chinese hamster ovary production cell line development process using methotrexate mtx amplification well studied commonly used biopharmaceutical processes however successful mtx amplification varies clone clone suggested reasons include vector fragmentation transfection process genomic rearrangement chinese hamster ovary chromosomes elucidated vector integration patterns transfected single cell clones southern blotting showed vector fragmentation occurs significant level experiment concurs mtx amplification studies implying single cell cloning necessary ensure successful amplification process truncations ends integrated vectors also observed whereas gross dna insertions detected data suggests end deletions common whereas insertion events rare animal cells american institute chemical engineers biotechnol prog
due high plasticity coralline algae identification based morphology alone extremely difficult studies increasingly use combination morphology genetics species delimitation dna barcoding study carried maerl forming coralline algae using mitochondrial cytochrome oxidase gene plastid gene psba field specimens falmouth oban together herbarium specimens natural history museum smithsonian institution washington usa results revealed presence north britain new species lithothamnion erinaceum melbourne brodie nov previously misidentified lithothamnion glaciale results also indicated lithothamnion lemoineae earlier recorded britain present one biggest concerns present organisms respond climate change ocean acidification imperative investigations put firm taxonomic basis study highlighted importance using molecular techniques aid elucidation cryptic diversity
infrared spectroscopy brought invaluable information proteins mechanism action enzymes achievements difficult transpose living organisms biological molecules absorb mid infrared usually high degree overlap deciphering contribution enzyme therefore almost impossible hand small changes infrared spectra cells induced environmental conditions drugs may provide accurate signature metabolic shift experienced cell response change growth medium present paper aims reviewing contribution infrared spectroscopy description small chemical changes occur cells exposed drug particular review focus cancer cells anti cancer drugs results accumulated far tend demonstrate infrared spectroscopy could accurate descriptor mode action anticancer drugs confirmed segmentation potential drugs according mode action invaluable discovery new therapeutic molecules article part special issue entitled physiological enzymology protein functions elsevier rights reserved
describe rationale methods study designed compare vaginal urinary microbiomes women mixed urinary incontinence mui similarly aged asymptomatic controls paper delineates methodology supplementary microbiome study nested ongoing randomized controlled trial comparing standardized perioperative behavioral pelvic floor exercise intervention plus midurethral sling versus midurethral sling alone mui women parent study least moderate bother urgency stress urinary incontinence symptoms sui validated questionnaire confirmed mui bladder diary controls incontinence symptoms participants underwent vaginal urine collection dna analysis conventional urine culture standardized protocols designed central lab received samples subsequent polymerase chain reaction pcr amplification sequencing bacterials ribosomal rna rrna gene composition bacterial communities determined dual amplicon sequencing variable regions vaginal urine specimens compare microbiome patients controls sample size estimates determined mui control participants sufficient detect difference predominant urinary genera power significance level specimen collection commenced january finished april dna extracted stored subsequent evaluation methods papers sharing information regarding development genitourinary microbiome studies particularly control populations describe rigorous methodology developed novel urogenital microbiome study women mui
laboratory genetics physiology lgp key component rig like receptors rlrs however lack caspase recruitment domains cards results controversial functional performance negative positive regulator antiviral responses especially sufficient evidence uncovers functional mechanisms lgp rlr signaling pathways teleost negative regulation mechanism lgp certain situations retinoic acid inducible gene rig melanoma differentiation associated gene mda mediated antiviral responses identified ctenopharyngoclon iclella kidney cells lgp overexpression inhibits synthesis phosphorylation interferon regulatory factor irf mrna levels promoter activities ifns kappa resting state early phase grass carp reovirus gcrv infection knockdown lgp obtains opposite effects luciferase report assay indicates lgp works upstream rig mda lgp binds rig mda diverse domain preference independent gcrv infection furthermore lgp restrains linked ubiquitination rig mda various degrees differences result disparate repressive mechanisms lgp rig mda mediated signal activations ifn beta promoter stimulator mediator irf activation interestingly lgp also inhibits linked rig mda ubiquitination suppress proteins degradation guarantees basal protein levels subsequently rapid signal activation results reveal mechanism lgp functions suppressor rlr signaling pathways maintain cellular homeostasis resting state early phase gcrv infection
gut microbiota contribute metabolism dietary polyphenols affect bioavailability parent polyphenols metabolites although large number reports specific polyphenol metabolites relatively little known regarding chemistry enzymology metabolic pathways utilized specific microbial species taxa focus review major classes dietary polyphenols include monomeric oligomeric catechins proanthocyanidins flavonols flavanones ellagitannins isoflavones gut microbial metabolism representatives polyphenol classes classified ring cleavage retro claisen reactions ring cleavage mediated dioxygenases dehydroxylations decarboxylation reduction reactions followed release molecules hydrogenations alkene moieties polyphenols resveratrol curcumin isoflavones mediated nadph dependent reductases qualitative quantitative metabolic output gut microbiota depends large extent metabolic capacity individual taxa emphasizes need assessment functional analysis conjunction determinations gut microbiota compositions
mesenchymal stem cells mscs non hematopoietic cells occur almost human tissues cultured expanded large numbers vitro secrete growth factors cytokines chemokines express toll like receptors surface although multiple cell biological mechanisms remain unclear mscs multi potent differentiate many cell types including adipocytes neuronal cells osteoclasts despite gaps cell biology immunomodulatory regenerative capacity several hundred clinical trials used mscs therapy cancer autoimmune diseases control inflammation organ transplantation mscs secrete immune modulatory factors able skew cell responses shift differentiation macrophages review emerging role mscs act phagocytes mycobacterium tuberculosis role persistence tuberculosis spread infection paradoxically mscs use innate defense mechanisms autophagy nitric oxide inhibit growth intracellular tuberculosis addition transplantation autologous mscs improved clinical condition patients multidrug resistant tuberculosis thus addition well known immune defense played macrophages dcs classical cells non classical immune cells mscs emerged fifth element capable regulating immune responses tuberculosis discuss immunomodulatory properties innate defense mechanisms context developing immunotherapeutic strategies tuberculosis published elsevier ltd
immunity mostly studied model organisms leaving majority immune systems planet unexplored characterize immune systems non model organisms alternative approaches required viruses manipulate host cell biology expression proteins modulate immune response hypothesized metagenomic sequencing viral communities would useful identify known unknown host immune proteins test hypothesis mock human virome generated compared human proteome using tblastn resulting proteins known involved immunity pipeline applied reef building coral non model organism currently lacks traditional molecular tools like transgenic animals gene editing capabilities vitro cell cultures viromes isolated corals compared predicted coral proteome resulted coral proteins including many proteins involved pathogen sensing apoptosis also coral proteins predicted involved coral immunity currently lacking functional annotation pipeline described provides novel method rapidly predict host immune components applied virtually system potential discover novel immune proteins
analysis microarray data obtained comparing gene expression week old infant week old mature rat testes revealed novel targets involved tumor suppression reverse transcription polymerase chain reaction northern blotting indicated tusc gene expression upregulated normal maturing testis prostate organs cerebrum ovary tumor suppressor candidate protein expression detected organs size kda accord predicted molecular size situ hybridization immunohistochemistry showed mrna protein localization prevalent testis spermatocytes interstitial cells leydig cells well prostate epithelial cells data suggest tusc deeply involved spermatogenesis testis inducing sperm differentiation maturation plays role normal prostate development tumor suppression
novel three dimensional dna aunps network structure amplification strategy employed design lateral flow biosensor introducing streptavidin coated gold nanoparticles paper act amplification probes aggregate numerous gold nanoparticles aunps test line forming threedimensional dna aunps network structure presence target sensitive detection nucleic acid point care analysis significant infectious agent early diagnosis treatment genetic diseases use particles rapid ultrasensitive point care poc lateral flow assays lead linear range limit detection without polymerase chain reaction pcr proposed method could increase sensitivity orders magnitudes traditional sandwich assays labeled aunps furthermore assay owns good reproducibility stability prove practical diagnostic applications
development multi photon intravital microscopy particular two photon microscopy breakthrough technique deep tissue imaging dynamic cell behavior inside live organisms substantially advanced field immunology however intravital time lapse imaging prolonged time periods complicated slow tissue drifts caused vital activity leading shifting fields views making acquired image sequence partially completely unanalyzable solve issue established system performs continuous drift offset correction real time using fine pattern matching acquisition incorporated extensive use graphical processing unit cpu high speed computing required real time correction data acquisition allowed perform prolonged acquisitions increase proportion analyzable datasets nearly lymphoid non lymphoid tissues considering straightforward implementation newly developed system anticipate applicable users interested improving quality live imaging data acquisition elsevier rights reserved
background knowledge fatty acid composition lipid classes human plasma important factor investigation human metabolism therefore method analysis neutral lipid phospholipid free fatty acids ffa human plasma developed validated methods separation lipid classes carried solid phase extraction lipid extract fractions transesterified resulting fatty acid methyl esters determined fid method validated precision detection quantification limits well recovery determined combined lipid extraction solid phase extraction analysis results lipid extraction miniaturized simplified application ultrasound sonotrode resolution lipid classes optimized appropriate standards added representative plasma sample addition rapid derivatization procedure using trimethylsulfoniumhydroxide established low determination limits plasma ffa respectively indicate method sensitivity sufficient quantify even minor components furthermore recovery fatty acids found range results similar ffa apart polar free fatty acids due higher solubility water repetitive measurements showed good precision apart long chain pufa coefficients variation significantly higher conclusions present method applicable quantitation fatty acids lipid classes human plasma including several minor components
past several decades biology developing lens investigated using molecular genetics based approaches various vertebrate model systems efforts involving target gene knockouts knockdowns led major advances understanding lens morphogenesis pathological basis cataracts well lens related eye defects particular functional understanding regulators pax six sox oct pouf meis pnox zeb sip mabl foxe tfapa alpha pitx sox prox sox maf mafg mafk hsf fgfrs bmp tdrd tissue however whether individual regulators interact targets overlap significance interactions lens morphogenesis well defined arrival high throughput approaches gene expression profiling microarrays rna sequencing rna seq etc coupled chromatin immunoprecipitation chip rna immunoprecipitation rip assays along improved computational resources publically available datasets containing comprehensive protein protein protein dna information presents new opportunities advance understanding lens tissue global systems level systems level knowledge lead derivation underlying lens gene regulatory network grn defined circuit map regulator target interactions functional lens development applied expedite cataract gene discovery review cover various systems level approaches micro arrays rna seq chip already applied lens studies discuss strategies assembling interpreting vast amounts high throughput information effective dispersion scientific community particular discuss strategies effective interpretation new information context rich knowledge obtained application traditional single gene focused experiments lens finally discuss vision integrating diverse high throughput datasets single web based user friendly tool isyte integrated systems tool eye gene discovery resource already proving effective identification characterization genes linked lens development cataract anticipate application similar approach ocular tissues retina cornea even organ systems significantly impact disease gene discovery elsevier ltd rights reserved
organophosphorus ops compounds widely used many pesticides insecticides chemical nerve agents compounds hazardous humans environment many reports detoxification compounds among enzymatic cleavage compounds organophosphorus hydrolase oph taken consideration several studies performed improve oph secretion escherichia coli different signal peptides successful study achieve extracellular secretion oph coli complete opd gene along native signal peptide codon optimized expressed coli plyss culture medium showed oph activity induction time extracellular secretion oph also confirmed sds page western blot analysis effects different factors growth medium also investigated regarding expression extracellular secretion oph appears secretion oph extracellular medium highly affected culture conditions therefore results revealed recombinant oph successfully secreted extracellular medium secretion system considered high efficiency biocatalyst detoxification ops compounds international union biochemistry molecular biology inc volume number pages
adipocytes fat cells important endocrine metabolic cells critical systemic insulin sensitivity adipose excess insufficiency associated adverse metabolic function adipogenesis process whereby preadipocyte precursor cells differentiate lipid laden mature adipocytes process driven network transcriptional regulators trs hypothesized protein ptms particular phosphorylation play major role activating propagating signals within networks upon induction adipogenesis extracellular stimulus applied based quantitative proteomics phosphoproteomics monitor alteration nuclear proteins early stages preadipocyte differentiation identified total proteins including phosphorylated proteins majority assigned regulators gene expression results demonstrate adipogenic stimuli increase nuclear abundance phosphorylation levels proteins involved gene expression cell organization oxidation reduction pathways furthermore proteins acting negative modulators involved negative regulation gene expression insulin stimulated glucose uptake cytoskeletal organization showed decrease nuclear abundance phosphorylation levels first adipogenesis among identified trs regulated within adipogenic stimulation including several known many novel potential adipogenic regulators created kinase substrate database preadipocytes investigating relationship protein kinases protein phosphorylation sites identified dataset majority putative protein kinases belong cyclin dependent kinase family mitogen activated protein kinase family including jun terminal kinases suggesting kinases act orchestrators early adipogenesis
zika virus mosquito borne flavivirus causes clinical symptoms similar observed dengue chikungunya virus infections korea centers disease control prevention initiated laboratory testing using real time reverse transcription polymerase chain reaction january suspected cases infection tested nine confirmed imported cases zika virus infection january july travel destinations infected individuals brazil philippines viet nam guatemala puerto rico dominican republic phylogenetic analysis based partial envelope gene indicated viruses belonged asian genotype circulating south america investigated duration viral rna virus specific antibodies detectable symptom onset day symptom onset zika virus detectable days serum days urine saliva days semen immunoglobulin zika virus detected early days symptom onset maintained levels days whereas immunoglobulin detectable days symptom onset maintained days findings would help diagnostic laboratories improve testing programs zika virus infection
background objectives early growth response nuclear transcription factor implicated regulating cell proliferation fibroblast growth factor prototypic fibroblast growth factor involved proliferation differentiation various cell types expression early growth response induced fibroblast growth factor thus may important cell growth development wound healing oral tissue however little known expression kinetics early growth response fibroblast growth factor stimulated oral cells aim study investigate effects fibroblast growth factor expression early growth response human periodontal ligament cells material methods periodontal ligament cells cultured medium containing fibroblast growth factor min fibroblast growth factor min proliferation periodontal ligament cells evaluated measuring bromo deoxyuridine incorporation expression early growth response mrna protein localization early growth response protein examined western blotting northern blotting immunocytostaining results bromo deoxyuridine incorporation correlated directly increases fibroblast growth factor concentration bromo deoxyuridine incorporation peaked min starting treatment early growth response protein expressed response concentration fibroblast growth factor low peak expression early growth response mrna observed min early growth response protein min kda early growth response protein detected nuclear fraction peak expression kda early growth response protein occurred min early growth response localized around nucleus min conclusion results show concentration fibroblast growth factor low induces expression early growth response protein kda early growth response protein functions nucleus periodontal ligament cells treated fibroblast growth factor
work intended design integration sensor non invasive blood glucose detection isnbgd low power consumption fast detection speed high accuracy based modified conservation energy metabolism theory blood glucose level bgl acquired multi linear regression equation rate human metabolism blood flow oxygen saturation hemoglobin pulse frequency physiological parameters obtained isnbgd size integrated temperature sensors humidity sensors radiation sensors dual wavelength photo detectors healthy volunteers involved preliminary clinical experiment blood glucose concentrations ranging mmol compared automatic biochemical analyzer aba gold standard correlation coefficient bgl isnbgd aba isnbgd strong correlation good coherence moreover multi physiological parameters measured isnbgd including body temperature local metabolic rate blood flow oxygen saturation heart rate simultaneously
considerable interest coloured fruits berries sources biologically active anthocyanins examine relationship oral close amount excreted anthocyanins food source across physiological range doses volunteers fed random order four portions fresh strawberries part standard breakfast urine collected intervals period fresh strawberries contained pelargonidin glucoside major anthocyanin smaller amounts cyanidin glucoside pelargonidin rutinoside anthocyanins detected urine volunteers doses predominantly pelargonidin glucuronide sulphate metabolites strong linear relationship oral dose anthocyanin excretion pearson product moment correlation coefficient indicated average every additional unit dose caused units excretion within individuals dose excretion data fitted linear regression model median conclude strawberry anthocyanins partially bioavailable humans linear relationship oral dose urinary excretion doses fresh fruit
eimeria maxima one pathogenic species avian coccidia yet unknown different maxima strains differ pathogenic effects cause chickens purpose study determine pathogenic maxima strain apu also fecund less pathogenic maxima strain apu identical doses maxima apu always produces greater intestinal lesions lower weight gain compared maxima apu using dose response study median mean intestinal lesion scores maxima apu infected chickens greater score compared chickens infected maxima apu likewise weight gain depression maxima apu infected chickens greater equivalent body weight maxima apu infected chickens order understand underlying cause observed clinical effects broiler chicks oocyst levels replicates level inoculated various doses maxima apu apu oocysts dynamics oocyst shedding investigated collecting fecal material every post inoculation every thereafter processed measuring maxima oocyst output oocysts first observed time peak oocyst production nearly identical maxima apu apu around total oocyst production fold higher dose levels maxima apu compared maxima apu significantly higher log dose level groups chickens infected higher doses maxima apu apu oocysts intestinal lesions assessed histology although schizonts gamonts oocysts observed expected time points obvious differences noted lesions induced two maxima strains study showed greater fecundity maxima apu compared maxima apu explains part observed differences pathogenicity two maxima strains factors may contribute differences observed clinical effects
order operate coordinated fashion multisubunit enzymes use cooperative interactions intrinsic enzymatic cycle process remains poorly understood accordingly atp number distributions various hydrolyzed states obtained single copies mammalian double ring multisubunit chaperonin tric cct free solution using emission chaperonin bound fluorescent nucleotides closed loop feedback trapping provided anti brownian electrokinetic trap observations subunit complexes adp molecules dissociating shows peak bound adp number distribution adp whose height falls time little shift position peak indicating highly cooperative adp release process would difficult observe ensemble averaged methods alfx added produce atp hydrolysis transition state mimics adp center dot alfx locked complex peak nucleotides dominates lowest incubation concentrations although ensemble averages single molecule data show agreement standard cooperativity models surprisingly observed number distributions depart standard models illustrating value single molecule observations constraining mechanism cooperativity complete alternative microscopic model defined present addition subunit occupancy dependent cooperativity hydrolysis yields distributions consistent data
human vivo metabolism study carried investigate impact trimethylselenium ion tmse status metabolism toxicokinetics sodium selenite selenized yeast nine healthy human volunteers orally exposed selenium sodium selenite seven selenized yeast selenium intervention group three subjects belong tmse eliminators blood samples withdrawn administration urine samples collected within administration total selenium quantified blood plasma urine low molecular species urine selenium concentration plasma increased selenite supplementation selenized yeast intake oral ingestion caused additional elimination via urine tmse elim non tmse elim selenite exposure tmse elim non tmse elim selenized yeast exposure methyl acetamido deoxy seleno beta galactopyranoside sesug main metabolite urine samples whereas tmse another main metabolite tmse eliminators urine selenite exposure small amount dose oxidized selenate rapidly excreted via urine exception selenite exposure tmse eliminators comparison total sum quantified species revealed high renal portion unidentified species study indicated different metabolism inorganic organic compounds human also crucial differences metabolism tmse eliminators non tmse eliminators
enzymes involved lysine biosynthetic pathway long considered attractive targets novel antibiotics due absence pathway humans recently novel pyridoxal phosphate plp dependent enzyme called diaminopimelate aminotransferase dap identified lysine biosynthetic pathway plants chlamydiae understanding function substrate recognition mechanism would important initial step toward designing novel antibiotics targeting dap crystal structures dap arabidopsis thaliana complex various substrates analogues solved recently structures revealed glutamate dap recognized dap without significant conformational changes enzyme backbone structure review article summarizes recent developments structural characterization inhibitor design dap thaliana article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
astrocytomas common primary brain tumors resistant therapies usually progress rapidly high grade lesions investigated potential role dna repair genes astrocytoma progression resistance aim performed polymerase chain reaction array based analysis focused dna repair genes searched correlations expression patters survival prognoses found genes significantly altered combining genes possible arrangements found expression signatures strongly associated poor survival importantly five genes ddb exo neil brca brip independently correlated worse prognoses revealing single gene signatures moreover silencing exo remarkably overexpressed promoted faster restoration double strand breaks neil knockdown also highly overexpressed caused increment dna damage cell death irradiation glioblastoma cells results disclose importance dna repair pathways maintenance genomic stability high grade astrocytomas suggest exo neil overexpression confers efficiency double strand break repair resistance reactive oxygen species respectively thereby highlight two genes potentially related tumor aggressiveness promising candidates novel therapeutic targets
endomyocardial biopsy emb established parallel development percutaneous catheter technology diagnosis cardiac diseases developed early japan drs konno sakakibara sekiguchi tokyo women medical university emb valuable useful invasive modality making definite diagnosis diseases myocarditis secondary cardiomyopathies often difficult diagnose imaging modality alone field heart transplantation histology emb helps monitor rejection allografts cases chronic heart failure fibrosis degeneration cardiomyocytes important findings heart remodeling recently molecular biology technology applied emb specimens get detailed information however must also recognize emb invasive examination performed without skillful cardiac catheterization experience avoid complications review message pathologists present key cardiac histopathology using emb way allows one imagine whole cardiac pathological conditions also describe current role emb significance order encourage young cardiologists perform emb see another world pathology
rna silencing suppression silencing host virus interactions defense counter defense explored function effect pro encoded sugarcane mosaic virus scmv suppression rna silencing sirna northern blotting assay indicated replication scmv regulated host rna silencing machinery expression assay demonstrated pro encoded scmv suppressed rna silencing induced sense rna dsrna transitive rna silencing assay showed pro regulated accumulation secondary sirna secondary primary sirna meanwhile gene tomato aspermy cucumovirus tav evidently regulated accumulation secondary sirna importantly found pro tavb regulated accumulation rdr mrna thus pro rna silencing suppressor encoded scmv regulates accumulation different sirnas one target rna silencing pathway elsevier inc rights reserved
hydroidfest took place september davis bodega marine laboratory bodega bay meeting brought together cnidarian researchers emphasis studying hydrozoans north america parts world scientific topics discussed diverse including sessions focused development regeneration aging immunology symbiosis neurobiology thanks application modern biological technologies hydrozoans cnidarians fertile ground research numerous disciplines moreover amenability comparative approaches powerful asset repeatedly showcased meeting give brief account work presented opportunities emerged ensuing discussions
ability accumulate polyphenols light absorbance allowed early land plants resist irradiation made survival land possible largely consumed polyphenols synthesized human present plants microorganisms number described phenolic compounds increasing due continual evolution new genes mutations response adaptation environmental changes wide range biological studies revealed antioxidant properties polyphenols towards human pathologies cancer health benefits polyphenols however depend amount ingested bioavailability many factors great influence bioavailability polyphenols climate agricultural practices industrial processes host microbiota considered act metabolic organ important role human metabolism polyphenols anticancer effect relies chemical structure concentration type cancer biological activity polyphenols extensively studied preclinical assays polyphenols overcome cancer chemotherapeutic resistance modulating cancer cells multiple drug resistance mdr overexpression phenotype solid tumours hematological malignances polyphenols exert important role apoptosis induction cell growth inhibition cell cycle arrest oxidative stress cell migration differentiation combination flavonoids chemotherapy seems interesting approach cancer treatment addition points related polyphenols bioavailability delivery needs elucidated order improve biological effects vivo
shmirs pri mirna based rna interference triggers exogenous sirnas expressed cells silence target genes reagents promising tools rnai vivo applications due good activity profile lower toxicity observed vector based reagents shrnas study using high resolution northern blotting small rna sequencing investigated precision rnases drosha dicer process shmirs fidelity sirna release commonly used pri mirna shuttles found depend sirna insert pri mir scaffold searched specific factors may affect precision sirna release found structural features shmir hairpins nucleotide sequence drosha dicer processing sites contribute cleavage site selection cleavage precision analysis multiple shrna intermediates generated several reagents revealed complexity shmir processing drosha demonstrated dicer selects substrates processing aside providing new basic knowledge regarding specificity nucleases involved mirna biogenesis results facilitate rational design efficient genetic reagents rnai technology elsevier rights reserved
objective determine bacterial vaginosis marker risk spontaneous preterm delivery detection treatment reduce risk methods consultation database pubmed medline science direct international guidelines medical societies results bacterial vaginosis dysbiosis resulting imbalance vaginal flora multiplication anaerobic bacteria jointly disappearance well known protective lactobacilli diagnosis based clinical amsel criteria gram stain establishment nugent score prevalence extraordinarily varies according ethnic geographical origin france close first trimester pregnancy link spontaneous premature delivery low odds ratio recent studies metronidazole clindamycin effective treat recommended prescribe one antibiotics case symptomatic professional consensus testing associated treatment global population showed benefit prevention risk spontaneous preterm delivery concerning low risk asymptomatic population defined absence antecedent premature delivery failed profit track treat prevention risk spontaneous preterm delivery eli concerning high risk population defined history preterm delivery failed profit track treat prevention risk spontaneous preterm delivery however sub population patients history preterm delivery occurred context materno fetal bacterial infection may benefit detect treat early systematically genital infection particular professional consensus conclusion screening treatment pregnancy asymptomatic low risk population recommended prevention risk spontaneous preterm delivery grade population high risk notion antecedent premature delivery screening treatment recommended grade elsevier mason sas
aims present study investigate sub cellular location differential expression different cancer stages functional role famb colon cancer development famb expression studied quantified protein mrna levels cell lines using immunocytochemistry western blot real time pcr vitro functional assays vivo xenotransplantation mouse models used investigate molecular role famb cancer cell biology response famb silencing shrna lentiviral particles famb protein noted cytoplasm nuclei cancer cells cancer cells derived stage colon cancer famb expression remarkably reduced compared non cancer colon cells cancer cells derived stage colon cancer famb knockdown significantly increased proliferation colon cancer cells following lentiviral transfection furthermore famb suppression significantly increased clonogenic capacity wound healing potential increases proportion cells performing dna synthesis xenotransplantation model showed larger higher grade tumors formed mice receiving famb knockdown cells conclude expression analysis vitro vivo indicated famb acts cancer suppressor gene colon cancer wiley periodicals inc
thermal printing papers analyzed contained bisphenol bpa taking hold receipt consisting thermal printing paper roughly bpa transferred forefinger middle finger skin rather dry ten times fingers wet greasy amount transferred dry skin neither significantly increased taking hold paper sites reduced bpa free paper contacted afterwards min bpa applied skin solution ethanol partially longer extractable ethanol whereas bpa transferred skin holding thermal printer paper remained largely extractable suggests penetration skin depends conditions extractability experiments enable conclude whether bpa passes skin indicated enter skin depth longer washed bpa ends human metabolism exposure person repeatedly touching thermal printer paper day cash register could reach day times less present tolerable daily intake tdi however finger pads contact bpa containing paper hand cream enhances permeability skin margin might smaller
study aims investigate impacts digital learning module guided peer feedback students domain specific knowledge gain attitudinal change field biotechnology molecular life sciences extent use module appreciated students studied well pre test post test design used students randomly assigned groups three asked work digital module aim exploring various perspectives pros cons topic genetically modified organisms gmos results suggest module used foster students domain specific knowledge gain attitudinal change furthermore module evaluated positively terms students motivation satisfaction learning experiences international union biochemistry molecular biology
background aim long intergenic noncoding rnas lincrnas critical roles elevating efficacy anticancer therapy tumor progression recent studies show regulator reprogramming ror aberrantly expressed several types cancer including colorectal cancer crc radiotherapy considered standard preoperative treatment however considerable number crcs resistant radiotherapy study evaluated role lincrna ror radiotherapy crc detected underlying molecular mechanism methods real time polymerase chain reaction employed quantify expression level lincrna ror different crc cell lines tissue samples cell viability apoptosis assays used confirm radiotherapy mediated effects lincrna ror altered expression direct impact lincrna ror expression mir loss function gain function strategy also analyzed xenograft mouse model used evaluate role linc ror crc treatment results discovered lincrna ror upregulated crc cell lines tissue samples showed knockdown lincrna ror enhanced sensitivity radiotherapy crc inhibiting cell viability promoting apoptosis activity mir pathway may help explain role lincrna ror stress induced regulation crc therapy combined specific knockdown lincrna ror radiotherapy treatment xenograft model resulted significant reduction tumor growth conclusion lincrna ror decreases sensitivity radiotherapy via negative regulation mir may represent potential target treatment crc
background objectivebacteria dental biofilm surrounding marginal gingival grooves cause periodontal diseases numerous bacteria within biofilm consume nutrients gingival crevicular fluid furthermore gram negative bacteria mature dental biofilms produce butyrate thus gingival epithelial cells close proximity mature dental biofilms risk starvation exposure butyrate present study determined combined effects starvation butyrate exposure gingival epithelial cell death underlying mechanisms material methodsthe cell line used vitro counterpart gingival epithelial cells cell death measured amount total dna dead cells using sytox green dye penetrates membranes dead cells emits fluorescence intercalates double stranded dna amp activated protein kinase ampk activity amount autophagy acetylation histone determined using western blot gene expression levels microtubule associated protein light chain lcb determined using quantitative reverse transcription polymerase chain reaction resultsbutyrate induced cell death occurred dose dependent manner whether cells starved fed however induction cell death two four times higher cells placed starvation conditions compared fed moreover starvation butyrate exposure induced ampk activity autophagy ampk inactivation resulted decreased autophagy butyrate induced cell death conditions starvation ampk activation resulted butyrate induced cell death cells fed combined results previous report demonstrated butyrate induced autophagy dependent cell death results study suggest combination starvation butyrate exposure activates ampk inducing autophagy subsequent cell death notably combination markedly induced lcb production induction attenuated ampk inhibition lcb knockdown turn significantly decreased butyrate induced cell death therefore ampk dependent lcb induction apparently plays important role butyrate induced cell death lack correspondence levels ampk activation lcb induction may reflect histone deacetylase inhibitory capacity butyrate histone proteins conclusiontaken together starvation butyrate exposure promote autophagy via ampk signaling histone deacetylase inhibitory effects butyrate alter chromatin transcriptionally active state resulting strong lcb induction subsequent cell death findings may help improve understanding cellular processes underlying periodontal disease initiation
high throughput sequencing technologies revolutionized potential reconcile incongruence gene species trees numerous approaches developed take advantage advances genotyping sequencing becoming regular tool gathering phylogenetic data yet comprehensive evaluations phylogenetic methods using data sparse use multiple phylogenetic population genetic methods genotyping sequencing data assess species relationships group forest insect pests spruce budworm choristoneura fumiferana species complex exceptions methods agree relationships notably placing pinus basal remainder group rather fumiferana previously suggested found strong support monophyly pinus fumiferana retiniana ambiguous relationships signatures introgression glade western lineages including carnana lambertiana occidentalis occidentalis occidentalis biennis orae represents taxonomically comprehensive genomic treatment spruce budworm species group supported broad agreement among multiple methodologies elsevier inc rights reserved
objective patients years age higher mortality morbidity major liver resections nitric oxide derived catalytic activity nos plays beneficial role liver regeneration partial hepatectomy experiment evaluated effect nos knockout aged mice materials methods experimental study two year old nos age wild type cbl mice subjected liver tissues collected time points mice survival ratio liver coefficient liver weight body weight calculated transcript protein levels estimated reverse transcriptase quantitative polymerase chain reaction qpcr western blot respectively results aged nos mice lower survival ratio liver coefficient termination phase nos transcript level obviously increased mice undetected nos mice expression transcript level cyclin cyclin cyclin protein expression level proliferation marker proliferation associated transcription factors jnk stat decreased delayed expression pro apoptotic proteins cas pase caspase bax increased nos mice conclusion decreased survival ratio impaired aged nos mice probably due decreased liver cell proliferation increased liver cell apoptosis
aspergillus fumigatus produces pentyl furan volatile compound produced many pathogens normal human metabolism pentyl furan detected breath patients invasive aspergillosis spme pre concentration coupled providing possibility attractive diagnostic test limit detection lod quantification loq peak integration assessed statistically empirically respectively pentyl furan detected food stuffs tested levels highest soymilk brands lower pumpkin peanuts rolled oats ensure plus tinned asparagus tinned beans vegetable exact marmiten detectable anti fungal medications used treat commonly used cosmetics tested difference breath levels morning afternoon fasting non fasting samples taken healthy subjects eating diet without rich foods pentyl furan levels present breath samples immediately mouth rinse soy milk subjects ingesting soy milk rinsing mouth water breath test conducted without overnight fast specified time provided mouth rinsed min containing products ingested elsevier rights reserved
among recent high profile scientific debates proposal life could exist arsenic place phosphorous nucleic acids biomolecules soon initial publication scientists across diverse disciplines began question extraordinary claim using original article claims scientific support ensuing counterarguments two day active learning classroom exercise developed focusing presentation evaluation discussion scientific argumentation discourse culminating assignment first semester biochemistry course undergraduate students analyze scientific support original research articles present discuss multiple scientific rebuttals lively civil classroom debate assignment students develop sense skepticism especially original arsenic based life claims learn clearly articulate counterarguments scientific support critical reasoning direct integration first semester biochemistry curriculum excitement surrounding arsenic based life assignment provides robust simple stimulating framework introducing scientific discourse active learning undergraduate molecular science curriculum international union biochemistry molecular biology
introduction schistosomiasis neglected tropical disease affecting hundreds millions people worldwide recent advances field proteomics development new highly sensitive mass spectrometers quantitative techniques provided new tools advancing molecular biology cell biology diagnosis vaccine development public health threats schistosomiasis areas covered review describe latest advances research utilizes proteomics based tools address key challenges developing effective interventions schistosomiasis also provide information potential extracellular vesicles advance fight devastating disease expert commentary different proteins already tested vaccines schistosomiasis promising results analysis schistosoma spp proteomes using new sensitive mass spectrometers well better separation approaches help identify vaccine targets rational informed manner addition recent development new proteome microarrays facilitate characterisation novel markers infection well new vaccine diagnostic candidate antigens
aim study develop ultra fast molecular detection method meat identification using convection palm polymerase chain reaction pcr mitochondrial cytochrome cyt gene used target gene amplicon size designed different beef lamb pork primer sets used species specific set specifically detected target meat species singleplex multiplex modes min pcr run detection limit dna meat species convection pcr method could detect low meat adulteration stability assay confirmed using thermal processed meats also showed direct pcr successfully performed mixed meats food samples results suggest developed assay may useful authentication meats meat products laboratory rapid site applications elsevier ltd rights reserved
calprotectin composed two proteins family members detected gingival crevicular fluid gingival tissue inflammation release production calprotectin regulated lipopolysaccharides periodontopathic bacteria cytokines emotional psychological stress risk factor periodontal disease transmitted stress modulators including norepinephrine cortisol aim present study investigate effect stress calprotectin expression using norepinephrine cortisol cells human monocytic cell line incubated norepinephrine presence absence beta alpha adrenergic receptor antagonists cortisol expression mrnas examined northern blotting amount calprotectin measured enzyme linked immunosorbent assay elisa dna binding activity ebp alpha ccaat enhancing binding protein transcription factor examined electrophoretic mobility shift assay norepinephrine stimulated expression mrnas via beta adrenergic receptors cells significantly increased calprotectin production fold control however cortisol effect calprotectin expression mrna protein levels norepinephrine elevated ebp alpha dna binding activity cortisol increase activity norepinephrine stress modulator stimulated calprotectin expression human monocytic cells calprotectin expression may regulated stress addition inflammatory factors
preclinical molecular imaging emerging field improving ability scientists study molecular basis human pathology animals utmost importance future advances fields human medicine moreover possibility developing new imaging techniques implementing old ones adapted clinic significant area cardiology neurology immunology oncology studied preclinical molecular imaging functional techniques photoacoustic imaging pat fluorescence molecular tomography fmt positron emission tomography pet single photon emission computed tomography spect association ana tomic reference provided computed tomography well anatomic functional information provided magnetic resonance proficiently applied animal models human disease mentioned imaging techniques shown ability explore molecular mechanisms involved animal models disease clinical translatability techniques motivates ongoing study possible fields application ability combine two techniques allows obtaining much information possible molecular processes involved pathologies reducing number animals necessary experiment merging molecular probes compatible various imaging technique expand capability achieve best results
background identification description understanding protein protein networks important cell biology medicine especially study system biology focus concerns interaction biomolecules hubs bottlenecks refer important proteins protein interaction network little attention paid differentiate two protein groups results integrating human protein protein interaction networks human genome wide variations across populations described differences hubs bottlenecks study findings showed similar interspecies hubs bottlenecks changed significantly slowly non hubs non bottlenecks distinguish hubs bottlenecks extracted special members hub non bottlenecks non hub bottlenecks differences two groups represent hubs bottlenecks found variation rate hubs significantly lower bottlenecks addition verified stronger constraint exerted hubs bottlenecks observed fewer non synonymous sites domains hubs bottlenecks different molecular functions conclusions based results conclude recent human history different variation patterns exist hubs bottlenecks protein interaction networks revealing difference hubs bottlenecks results might provide insights relationship evolution biological structure
background mesenchymal stromal cells msc major component tumor microenvironment patients head neck squamous cell carcinoma hnscc msc display innate regulatory immunologic functions similar many hematopoietic classical immune cells conversion atp immunosuppressive adenosine immunosuppressive mechanism utilized hematopoietic immune cells present study explores adenosine metabolism tumor derived msc comparison autologous msc non malignant tissue methods hnscc patients paired msc generated tumor tissue tmsc autologous healthy control tissue cmsc differentiation properties phenotype compared flow cytometry production immunosuppressive adenosine ado functionally active ectonucleotidases determined luminescence mass spectrometry suppressive activity ado tested cfse proliferation assays isolated cells plasticity cmsc explored incubation tumor cell conditioned media results differentiation osteogenic chondrogenic adipogenic directions comparable tmsc cmsc expression ectonucleotidases decreased tmsc compared corresponding cmsc correlated decreased atp metabolism mass spectrometry proliferation cells significantly suppressed exogenous ado tumor conditioned medium unable regulate ado production cmsc conclusion identified msc oropharyngeal mucosa important producer exogenous ado patients hnscc reduced expression ado may contribute excessive inflammation tumor growth elsevier gmbh rights reserved
several organs mammals retain partial regenerative capability following tissue damage underlying mechanisms remain unclear recently hippo signaling pathway better known function organ size control shown play pivotal role regulating tissue homeostasis regeneration upon tissue injury activity yap major effector hippo pathway transiently induced turn promotes expansion tissue resident progenitors facilitates tissue regeneration review general focus hippo pathway discuss major components functions stem cell biology involvement tissue regeneration different organs potential strategies developing hippo pathway targeted regenerative medicines
aim present study investigate resistance acinetobacter baumannii induced cefepime fep cefoperazone sulbactam scf tazobactam tzp levofloxacin lev amikacin imipenem ipm ciprofloxacin cip vitro multi step drug resistance selection baumannii strains performed using seven antibacterial agents fep tzp cip ipm scf lev minimum inhibitory concentration mic determined using agar dilution method random amplified polymorphic dna polymerase chain reaction performed analyze genotypes carrying rates aac aac ant aph via oxa oxa ampc tem metallo lactamase gene imp arma rmta rmtb parc gyra adeb expression adeb determined using semi quantitative reverse transcription polymerase chain reaction semi qrt pcr among strains strains drug resistance obtained following vitro induction notable increases fold noted mic different genotypes showed rapd strains performing drug resistant test pcr data revealed significant differences carrying rates resistant genes drug induction exception rmta oxa tem imp significant increases demonstrated comparative adeb grayscale strains underwent drug induction compared sensitive strains findings present study suggest active efflux pump adeb important role multidrug resistance baumannii induced antibacterial agents vitro
determining individual health status great importance better understanding life history trade offs growth reproduction maintenance however existing immunological methods invasive therefore suitable investigating health status wild populations thus urgent need non invasive methods assess immune status animals neopterin involved cell mediated pathway immune response type secreted activation monocytes macrophages investigated urinary neopterin could serve biomarker health status bonobos chimpanzees first performed chemical validation commercial neopterin enzyme immune assay eia bonobo chimpanzee urine examined urinary neopterin levels bonobos increase acute period respiratory infections found neopterin levels reliably measured urine two species commercial eia stability experiments revealed considerable changes urinary neopterin levels relation multiple freezethaw cycles extended exposure room temperature exposure sunlight led degradation urinary neopterin whereas sample storage two years affect urinary neopterin levels detectable diurnal variation neopterin levels levels remained stable across several days healthy individuals urinary neopterin levels independent sex nonadult individuals higher urinary neopterin levels adults importantly significant increase urinary neopterin levels period respiratory infection results demonstrate regular urine sample collection would allow monitoring individual health status disease progression minimal disturbance subjects combination behavioral life history endocrinological parameters method used investigate questions related immunocompetence handicaps life history trade offs
protea associated fungi dispersed flower heads mites beetles possibly birds ophiostomatoid fungus knoxdaviesia proteae vectors offer regular dispersal distant floral hosts unlike proteae knoxdaviesia capensis occupies multiple protea host species study aimed determine whether generalist capensis shares long distance dispersal pattern specialist proteae whether moves freely different host species evaluated genetic structure capensis five populations wide spread host sympatric hosts twelve capensis specific microsatellite markers developed applied individuals capensis showed high genetic diversity almost maximal genotypic diversity populations poorly differentiated indicating presence long distance dispersal differentiation could detected sympatric host populations suggesting free dispersal different hosts implies beetle bird vectors pollinate protea species show non specific movement elsevier ltd british mycological society rights reserved
entomopathogenic fungi play pivotal role regulation insect populations nature representative species developed promising environmentally friendly mycoinsecticides recent advances genome biology insect pathogenic fungi revealed genomic features associated fungal adaptation insect hosts different host ranges well evolutionary relationships insect noninsect pathogens using species beauveria metarhizium genera models molecular biology studies revealed genes function fungus insect interactions thereby contribute fungal virulence taken together efforts toward genetic improvement fungal virulence stress resistance knowledge entomopathogenic fungi potentiate cost effective applications mycoinsecticides pest control field relative advanced insights mechanisms fungal pathogenesis plants humans future studies necessary unravel gene gene relationships fungus insect interactive models
multiple substrate enzymes present particular challenge comes understanding activity complex system although single target may easy model always present accurate representation enzyme presence multiple substrates simultaneously therefore need find better ways study enzymes complicated systems well accurately describe interactions kinetic parameters review looks different methods studying multiple substrate enzymes well explores options accurately describe enzyme activity within multi substrate systems identifying defining enzymatic activity help clear way using vitro systems accurately predicting behavior multi substrate enzymes vivo article part special issue entitled physiological enzymology protein functions published elsevier
polymeric carriers ubiquitously studied vaccine drug delivery control encapsulation kinetics targeting cargo recent research reveals many polymers cause immunostimulatory inflammatory responses even absence immune signals however extent intrinsic immunogenicity evolves degradation understudied synthesized small library poly beta amino esters pbaes exhibit different starting molecular weights mws similar rapid degradation rates primary dendritic cells dcs treated free pbaes either intact degraded form low fragments activated contrast particles formed pbaes different extents degradation caused differential expression classical activation markers example mhcii well antigen presentation degradation activation levels changed changing physicochemical properties example concentration size charge note irrespective starting immunogenicity peaked degrading pbaes decreased range similar findings could help inform design future carriers exploit dynamic interactions immune system materials degrade leading carriers deliver cargo also help direct immune responses vaccine immunotherapy cargo wiley periodicals inc
mycobacteria polyketide synthases nonribosomal peptide synthetases nrpss produce complex lipidic metabolites using thio template mechanism catalysis study demonstrate loading reductase domain mycobacterial nrpss performs two consecutive reductions release thioester bound lipopeptides corresponding alcohols using nonprocessive mechanism catalysis first crystal structure domain mycobacterium tuberculosis nrps provides strong support mechanistic model suggests displacement intermediate would required cofactor recycling show reductases produce alcohols committed aldehyde intermediate reduction intermediate least times efficient thioester substrate structural biochemical studies also provide evidence conformational changes associated reductive cycle show large substrate binding pocket hydrophobic platform accounts remarkable substrate promiscuity domains studies present elegant example recruitment canonical short chain dehydrogenase reductase family member loading domain context assembly line enzymology
background cellular stressors apoptosis inducing agents shown induce ribosomal rna rrna degradation eukaryotic cells recently rna degradation vivo observed patients locally advanced breast cancer mid treatment tumor rna degradation associated complete tumor destruction enhanced patient survival however clear widespread chemotherapy induced rna disruption extent associated drug response underlying mechanisms methods ovarian caov breast mda mcf skbr cancer cell lines treated several cytotoxic chemotherapy drugs total rna isolated rna also prepared docetaxel resistant adxl carboplatin resistant acbn cells following drug exposure disruption rna analyzed capillary electrophoresis northern blotting performed using probes complementary rrna determine origins degradation bands apoptosis activation assessed flow cytometric monitoring annexin propidium iodide binding cells measuring caspase activation link apoptosis rna degradation disruption investigated using caspase inhibitor results chemotherapy drugs tested capable inducing similar rna disruption patterns docetaxel treatment resistant adxl cells carboplatin treatment acbn cells result rna disruption northern blotting indicated two rna disruption bands derived end rrna annexin staining docetaxel treated cells along assessment caspase activation showed concurrent initiation apoptosis rna disruption inhibition caspase activity significantly reduced rna disruption conclusions supporting vivo evidence results demonstrate rna disruption induced multiple chemotherapy agents cell lines different tissues associated drug response although present link apoptosis rna disruption completely understood evaluation rna disruption thus proposed novel effective biomarker assess response chemotherapy drugs vitro vivo
background european academy allergy clinical immunology eaaci process developing eaaci guidelines allergen immunotherapy ait management insect venom allergy inform process sought assess effectiveness cost effectiveness safety ait management insect venom allergy methods undertook systematic review involved searching international biomedical databases published unpublished evidence studies independently screened critically appraised using established instruments data descriptively summarized possible meta analysed results searches identified total potentially eligible studies satisfied inclusion criteria available evidence limited volume quality suggested venom immunotherapy vit could substantially reduce risk subsequent severe systemic sting reactions meta analysis showed also improved disease specific quality life risk difference adverse effects experienced build maintenance phases mild fatalities reported limited evidence found modelling cost effectiveness suggested vit likely cost effective high risk repeated systemic sting reactions impaired quality life conclusions limited available evidence suggested vit effective reducing severe subsequent systemic sting reactions improving disease specific quality life vit proved safe fatalities recorded studies included review cost effectiveness vit needs established
objective determine molecular profiles endometriotic lesions contain informative measures inflammation immune dysfunction may contribute better understanding interplay immune dysfunction inflammation contribution endometriosis pathogenesis design immune inflammation transcriptomic analysis use nanostring ncounter human immunology platform human immune inflammation related genes housekeeping genes setting academic university teaching hospital intervention none patient stage iii endometriosis patients infertility fertile disease free control women undergoing tubal ligation menstrual stage matched secretory phase participants main outcome measure immune inflammation transcriptomics quantification ectopic endometriotic lesions matched eutopic endometrium patients endometria fertile women served control subjects result results displayed endometriotic lesions molecularly distinct entities compared eutopic endometrium endometrium control samples screened immune inflammation related genes significantly different ectopic tissues compared control endometrium importantly eutopic endometrium patients displayed unique molecular profile compared control endometrium genes significantly different particularly genes involved regulation cell apoptosis decidualization conclusion characterize differential expression immune inflammation genes endometriosis patients show molecular distinction eutopic endometrium patients compared control fertile women american society reproductive medicine
suadea salsa full length adenosylmethionine synthetase sssams introduced tobacco nicotiana tabacum agrobacterium tumefaciens mediated transformation gene transformation expression tobacco confirmed pcr pcr northern blotting analysis several transgenic lines lines overexpressing sssams gene control cauliflower mosaic virus promoter showed seeds number weight accumulated higher free total polyamines pas wild type plants lines transformants blank vector lines salt stress induced damage attenuated transgenic plants symptom maintaining higher photosynthetic rate biomass results transgenic plants overexpressing suadea salsa sams tolerant salt stress wild type plants suggest pas may play important role contributing salt tolerance plants
hla differs hla single nucleotide substitution position
purposedespite third common abca variant observed patients stargardt disease functional effect intronic abca variant unknown purpose study investigate molecular effect variant methodsfibroblast samples patients carrying abca variant analysed isolating total rna followed real time polymerase chain reaction pcr using specific primers spanning variant detection abca protein fibroblast samples lysed analysed sds page followed immunoblotting using monoclonal abca antibody resultsthe abca variant causes splicing defect resulting reduction full length mrna fibroblasts patients presence alternatively spliced mrnas exon skipped reduced level full length abca protein observed compared controls carrying variant conclusionsthis study describes functional effect molecular mechanism pathogenic abca variant variant functionally important leads splicing defects reduced level abca protein
saccharomyces cerevisiae frequently used bioreactor conversion exogenously acquired metabolites value added products utilized bioconversion low cost lipids triacylglycerols tags cells typically unable acquire lipid substrates growth media help circumvent limitation yarrowia lipolytica lipase lip gene cloned cerevisiae expression vectors used generate cerevisiae strains secrete active lip lipase lipp enzyme growth media specifically lip expression driven cerevisiae pex promoter maintains basal transgene expression levels presence sugars culture medium rapidly upregulated fatty acids northern blotting lipase enzyme activity assays gas chromatographic measurements cellular fatty acid composition lipid feeding confirmed cells transformed pex promoter lip construct responsive lipids media cells expressing lip responded rapidly either free fatty acids tags accumulated high levels corresponding fatty acids intracellular lipids data provided evidence creation self regulating positive control feedback loop allows cells upregulate lipp production lipids present media regulated autonomous production extracellular lipase activity necessary step towards generation yeast strains serve biocatalysts conversion low value lipids value added tags novel lipid products
climate change late quaternary period lqp temperate tropical zones major driver shaping species distributions abundances understanding various effects climate change population dynamics marine species temperate zones gulf california growing however studies demographic history seabirds rare description regional climate change affected high trophic level marine species heermann gull larus heermanni charadriiformes laridae investigated whether demographic history heermann gull reflects population change consistent past changes climate gulf california lqp also explored whether past changes affected demographic history codistributed marine organisms similar way found heermann gulls test hypotheses sequenced fragment mitochondrial dna cytochrome gene base pairs performed tests investigate whether demographic change occurred within lqp results approaches used consistent historical demographic expansion lqp analyses test tajima neutrality test mismatch distribution analysis mda associated demographic parameters bayesian skyline plots bsp consistent model population expansion heermann gulls mda estimated expansion event similar present confidence interval whereas bsp showed population growth began similar lasted similar discuss possible associations demographic expansion seabird species large scale ecological shifts demographic expansions marine species
human ether related gene herg encodes pore forming subunit rapidly activating delayed rectifier potassium channel important cardiac repolarization dysfunction herg causes long syndrome sudden death occur patients cardiac ischemia cardiac ischemia also associated activation regulation secretion various proteolytic enzymes using whole cell patch clamp western blotting analysis demonstrate herg channel selectively cleaved serine protease proteinase using molecular biology techniques including making chimeric channel protease sensitive herg insensitive human ether heag well application scorpion toxin bekm identified pore linker herg target domain proteinase cleavage investigate physiological relevance unique susceptibility herg proteases show cardiac ischemia rabbit model associated reduction mature erg expression increase expression several proteases including calpain using cell biology approaches found calpain actively released extracellular milieu cleaved herg pore linker using protease cleavage predicting software site directed mutagenesis identified calpain cleaves herg position gly pore linker herg clarification protease mediated damage herg extends understanding herg regulation damage herg mediated proteases calpain may contribute ischemia associated prolongation sudden cardiac death
platelet activation long known accompanied secretion least three types compartments include dense granules major source small molecules alpha granules major protein storage organelle lysosomes site acid hydrolase storage despite similar years research still many unanswered questions cell biology platelet secretion example secretory organelles organized support cargo release key routes cargo release granule plasma membrane granule canalicular system moreover recent years increasing evidence points platelet organized secretion contents organelles namely dense tubular system endoplasmic reticulum golgi apparatus conceivably protein secretion widespread property platelet organelles review concentrate cell biology alpha granule structure function relationships review literature discuss wide array dimensional high resolution structural approaches emerged last years begun reveal new unanticipated outcomes discussed hopeful next several years bring rapid advances field resolve past controversies clinically relevant
culture based pathogen identification skull base osteomyelitis particularly fungi often inaccurate report case patient fungal skull base osteomyelitis cured sustained antifungal therapy months debilitating illness due medical complications strong clinical rationale needed justify long term antifungal therapy offending fungus identified experimental molecular technology ibis universal biosensor invasive fungal disease corroborated biochemical assays discussion help familiarize otolaryngologist existing biochemical molecular diagnostics invasive fungal disease encourage future investigators study application cases skull base osteomyelitis
obesity major global public health concern immune responses implicated obesity also control certain infections investigated effects high fat diet induced obesity dio infection lyme disease bacterium borrelia burgdorferi mice dio associated systemic suppression neutrophil macrophage based innate immune responses included bacterial uptake cytokine production systemic progressive impairment bacterial clearance increased carditis severity burgdorferi infected mice fed normal diet also gained weight rate uninfected mice fed high fat diet toll like receptor deficiency rescued bacterial clearance defects greater female male mice killing unrelated bacterium escherichia coli bone marrow derived macrophages obese burgdorferi infected mice also affected importantly innate immune suppression increased infection duration depended cooperative synergistic interactions dio burgdorferi infection thus obesity burgdorferi infection cooperatively progressively suppressed innate immunity mice
work describes week laboratory project studying wild type mutant bacterial alkaline phosphatase students purify quantitate perform kinetic assays wild type selected mutants enzyme students also perform plasmid dna purification digestion gel analysis addition simply learning important techniques students acquire novel biochemical data kinetic analysis mutant enzymes experiments designed build students work week week way requires apply quantitative analysis reasoning skills reinforcing traditional textbook biochemical concepts students assessed lab reports focused journal style writing quantitative conceptual question sheets traditional exams international union biochemistry molecular biology
xanthomonas oryzae oryzae causes bacterial leaf blight one widespread destructive bacterial diseases rice study identified characterized contribution twin arginine translocation tat pathway motility chemotaxis extracellular polysaccharide eps production virulence oryzae oryzae strain pxo tatc disruption mutant strain tcm strain pxo generated confirmed pcr southern blotting strain pxo cells highly motile nygb soft agar plate contrast tatc mutation impaired motility furthermore strain tcm cells lacked detectable flagella exhibited almost chemotaxis toward glucose aerobic conditions indicating tat secretion pathway contributed flagellar biogenesis chemotactic responses also observed strain tcm exhibited reductive production extracellular polysaccharide eps significant reduction virulence rice plants compared wild type pxo however tatc mutation strain pxo affect growth rate ability induce hypersensitive response nonhost tobacco nicotiana tabacum samsun findings indicated tat system oryzae oryzae played important role pathogen virulence
mitochondrial complex succinate dehydrogenase sdh crossroads oxidative phosphorylation tricarboxylic acid cycle shown sdh sdhaf sdh mammals required flavination subunit sdh sdha human cells yeast demonstrate human breast cancer cells sdhaf sdh dispensable sdha flavination contrast yeast crispr cas nickase mediated sdhaf breast cancer cells feature flavinated sdha retain fully assembled functional complex well normal mitochondrial respiration data show sdha flavination independent sdhaf breast cancer cells employing alternative mechanism
terminus trypanosome mrna protected hypermethylated cap derived spliced leader rna trypanosoma brucei nuclear capping enzyme cap guanylyltransferase methyltransferase activities tbcgm modifies diphosphate rna pprna end generate rna cap show brucei cytoplasmic capping enzyme tbce bifunctional rna kinase guanylyltransferase transfers phosphate atp prna form pprna capped transfer gmp gtp rna beta phosphate walker box motif terminal domain essential rna kinase activity targeted preferentially rna sequence terminal methylated nucleoside silencing tbce leads accumulation uncapped mrnas consistent selective capping mrna undergone trans splicing decapping identify brucei mrna decapping enzyme tbdcp cleaves mgdp capped rna generate prna substrate tbce tbdcp also remove gdp unmethylated capped rna less active mature cap end thus may function rna cap quality surveillance results establish enzymology relevant protein catalysts cytoplasmic recapping pathway broad implications functional reactivation processed mrna ends
research past two decades proved relevance single cell biology basic research translational medicine successful detection isolation specific subsets key understand functional heterogeneity antibodies conventionally used purpose relevance certain contexts limited review discuss contexts posing bottle neck different fields biology including biomedical research advancement chemistry several methods introduced overcome problems even though microfluidics microraft array newer techniques exploited single cell biology fluorescence activated cell sorting facs remains gold standard technique isolation cells many biomedical applications like stem cell therapy present comprehensive comparative account probes useful facs illustrate techniques could applied biomedical research postulated intracellular molecular markers like nucleostemin gnl alkaline phosphatase alpl hira used improving outcome cardiac well bone regeneration another field could utilize intracellular markers diagnostics propose use specific peptide nucleic acid probes pnps certain mirnas cancer surgical margin prediction newer techniques single cell biology based intracellular molecules immensely enhance repertoire possible markers isolation cell types useful biomedical research
operation blood banks aims cost efficient supply uncontaminated human blood unit donated blood goes multiple testing presence various pathogens able cause transfusion transmitted diseases blood screening process comprised two phases first phase blood units screened together pooled groups certain size elisa enzyme linked immuno sorbent assay test detect various virus specific antibodies second phase screening process conducted pcr polymerase chain reaction testing individual blood units groups found clean initial elisa phase thousands units donated blood arrive daily central blood bank screening screening scheme associated testing costs testing times addition blood unit arrives expiration date result shorter testing time longer residual lifetime left blood unit future use controller faces natural well motivated operations management problem attempt shorten testing period reduce testing costs without compromising much reliability achieve goals propose new testing procedure term recycled incomplete identification procedure riip riip groups pooled blood units found contaminated elisa test divided smaller subgroups group tested elisa forth eventually pcr test conducted subgroups found clean analyze optimize performance riip deriving explicit formulas cost components interest maximize profit associated procedure numerical results suggest indeed profitable several cycles elisa elsevier rights reserved
past years since publication progress biochemistry biophysics especially carry reform opening policies biochemistry research china achieved great successes quite number aspects position international biochemical research leading position beside enzymology biological membranes structure biology paper introduction issue present paper describe progresses mainly total synthesis yeast alanine transfer rna cloning study hepatitis virus adr subtype genome study human genome rice genome genomes functional genomics study found certain oncogene disease related gene well rice genes correspond relative trait developed technology molecular breeding plants important results obtained gene expression regulation animals plants yeast new break obtained rna research include trna snorna ribozyme good results also obtained research peptide protein proteomics glucoconjugates
hepatitis virus hbv replication cycle pregenomic rna undergoes splicing reverse transcribed defective genomes packaged released various types spliced defective hbv genomes isolated sera liver tissues viral hepatitis patients explore functions double spliced hbv variant full length hbv isolate double spliced hbv variant tumor tissue patient hepatocellular carcinoma hcc amplified cloned sequencing results showed deletions pre part pre genes part spacer part reverse transcriptase gene gene intact defective double spliced genome full length counterpart genome transfected hepg cells former shown enhance replication latter real time pcr southern blotting replication incompetent clone used transfect dna increased indicating replication wild type virus factor involved observation however replication enhancing competency shown require intact hbv expression cassette double spliced defective variant might contribute persistent hbv replication subpopulation hcc patients med virol wiley liss inc
last two decades lot progress made nanotechnology nanoscience exploitation matter atomic molecular supermolecular scale nanotechnology size widely used varied fields surface science molecular biology organic chemistry semi conductor physics micro fabrication medical sciences electronics biomaterials energy production etc using nanotechnology researchers able develop new materials nanoscale dimensions directly control matter atomic molecular scale due range many potential applications industrial military many governments boast invested billions dollars nanotechnology nanoscience research brief review deals fundamentals nanotechnology nanoscience application various fields also discusses future nanotechnology risks involved
purpose review myelodysplastic syndromes mds remarkably diverse somatic mutation patterns challenging interpret clinically yet genetic information increasingly available physicians review examine several implications genetic diversity mds recent findings somatic mutations serve clinically relevant biomarkers mds molecular subtypes may exist share clinical features including risk progression acute myeloid leukemia response treatment overall survival several mutated genes known prognostic value independent common risk stratification tools mutations several genes identify low blast percentage patients greater predicted disease risk sfb mutations predict lower disease risk expected mutations associated adverse features yet demonstrate inferior outcomes predicted risk factors sfb mutations may identify clinically relevant subtypes mds allow better refinement risk within groups using somatic mutations diagnose mds challenging occur healthy individuals yet patients unexplained cytopenias high rate clonal hematopoiesis may important risk factor identify clinically summary patterns somatic mutations diverse mds inform prediction prognosis aid diagnosis
optimized gene expression construct designed order increase accumulation hiv subtype protein arabidopsis thaliana carrot daucus carota plants retention signal introduced genetic construct generating protein containing sekdel amino acid sequence terminus mature thaliana plants carrot cells transformed using agrobacterium tumefaciens carrying improved pgreen sekdel vector several transgenic plant lines obtained plant species growth selective medium confirmed pcr transformed lines analyzed protein content western blotting using anti specific antibodies southern blotting establish number copies insert plant nuclear genome estimate accumulation levels protein plants elisa run using soluble plant extracts comparing results previous findings retention signal increased level protein fivefold thaliana plants carrot taproot content sekdel protein approximately half arabidopsis fresh weight basis stable planta several months however total soluble protein basis carrots produced considerable higher levels sekdel protein arabidopsis elsevier inc rights reserved
aims ancient dna adna extracted historical bones damaged fragmented short segments present low quantity usually copurified microbial dna wide range dna quantification methods available aim study compare five common dna quantification methods adna materials methods quantification methods tested dna extracted skeletal material originating early medieval burial site tested methods included ultraviolet absorbance real time quantitative polymerase chain reaction qpcr based sybr green detection real time qpcr based forensic kit quantification via fluorescent dyes bonded dna fragmentary analysis differences groups tested using paired test results methods measure total dna present sample nanodrop spectrophotometer qubit fluorometer showed highest concentrations methods based real time qpcr underestimated quantity adna accurate method adna quantification fragmentary analysis also allows dna quantification desired length affected pcr inhibitors conclusions methods based quantification total amount dna samples unsuitable ancient samples overestimate amount dna presumably due presence microbial dna real time qpcr methods give undervalued results due dna damage presence pcr inhibitors dna quantification methods based fragment analysis show quantity dna also fragment length
aim zinc finger antiviral protein zap mammalian host restriction factor could inhibit hbv rna synthesis vitro experiments however role zap hbv vivo environment unclear study aimed investigate whether zap could act hbv transcription replication zap tansgenic mouse model methods hbv replication competent plasmid phbv transferred zap transgenic icr mouse via tail vein using hydrodynamic vivo transfection procedure icr mouse used controls hbv rna hbv dna replication intermediates liver respectively analyzed northern blotting southern blotting expression hepatitis surface antigen hbsag hepatitis core antigen hbcag liver tissue detected immunohistochemical staining results compared icr control mouse levels mrna zap transgenic mouse decreased level hbv dna replication intermediates decreased addition expression hbsag hbcag zap transgenic mouse liver significantly less icr control mouse conclusions findings suggest zap could inhibit hbv replication vivo mice offers new target anti hbv drug development
rna modifications long known central proper function trna rrna chemical modifications mrna discovered decades ago function remained largely mysterious recently using enrichment strategies coupled next generation sequencing multiple modifications mapped transcriptome wide scale variety contexts know rna modifications influence cell biology many different mechanisms influencing rna structure tuning interactions within ribosome recruiting specific binding proteins intersect signaling pathways also dynamic changing distribution level response stresses heat shock nutrient deprivation provide overview recent themes emerged substantial progress made understanding chemical modifications across many major rna classes eukaryotes
cis acyltransferase modular polyketde synthese assembly lines largely structurally dissected enzymes within recently discovered trans acyltransferase polyketide synthase assembly lines starting observe crystallographically examine ketoreductase first polyketide synthase module bacilacene nonribosomal peptide syrithetaseipolyketide synthase angstrom resolution naturally reduces alpha beta keto groups known biosynthesis polyketide isolated reduced acetylcysteamine bound beta keto substrate alpha beta hydroxy product also acetylcysteamine botind keto substrate alpha beta hydrorq product substrates must enter active site opposite directions generate stereo chemistries suggests acyl phosphrlpalitetheine moiety capable accessing different conformations despite anchored serilie residue docked acyl carrier protein features enabling stereocontrolled alpha ketoreduction may extensive since naturally reduces keto group within cis acyltransferase polyketide synthase identified performs completely stereoselective reduction keto substrate generate alpha hdrorry product sequence analysis trans acyltransferase krs reveals single residue rather three residue motif found cis acyltransfemse krs predictive orientation resulting beta hydroxyl group
four last steps biotin biosynthesis starting pimeloyl coa conserved among biotin producing microorganisms two enzymes pathway amino oxononanoate synthase aons diaminopelargonic acid aminotransferase dapa dependent pyridoxal phosphate plp review summarizes current understanding structure reaction mechanism inhibition two interesting enzymes mechanistic studies well determination crystal structure aons revealed complex mechanism involving acylation inversion configuration decarboxylation retention configuration reaction mechanism shared homologous aminolevulinate synthase serine palmitoyltransferase reaction catalyzed dapa classical plp dependent transamination inactivation enzyme amiclenomycin natural antibiotic active mycobacterium tuberculosis involves irreversible formation adduct plp amiclenomycin mechanistic structural studies allowed complete description unique inactivation mechanism several potent inhibitors two plp dependent enzymes prepared might useful starting points design herbicides antibiotics article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
immune system maintains critically organized network defend foreign particles evading self reactivity simultaneously lymphocytes function effectors play important regulatory role orchestrate immune signals although central tolerance mechanism results removal autoreactive cells thymic selection fraction self reactive lymphocytes escapes periphery pose threat cause autoimmunity immune system evolved various mechanisms constrain autoreactive cells maintain peripheral tolerance including cell anergy deletion suppression regulatory cells regs effects regulated complex network stimulatory inhibitory receptors expressed cells ligands deliver cell cell signals dictate outcome cell encountering cognate antigens among inhibitory immune mediators pathway consisting programed cell death receptor ligands plays important role induction maintenance peripheral tolerance maintenance stability integrity cells however pathway also mediates potent inhibitory signals hinder proliferation function effector cells inimical effects antiviral antitumor immunity therapeutic targeting pathway resulted successful enhancement cell immunity viral pathogens tumors provide brief overview properties components pathway signaling events regulated engagement consequences function effector cells
background small brown planthopper sbph important pest cereal crops acts transmission vector multiple rna viruses rapid diagnosis virus vector crucial efficient forecast control viral disease reverse transcription polymerase chain reaction pcr rapid sensitive reliable method virus detection traditional pcr contains rna isolation step widely used virus detection insect however using traditional pcr detecting rna virus individual sbphs becomes challenging expensive reagents laborious procedure associated rna isolation processing large number samples results established simplified pcr method without rna isolation rna virus detection single sbph method achieved grinding single sbph sterile water using crude extract directly template pcr crude extract containing virus rna prepared approximately two minutes rice stripe virus rsv rice black streaked dwarf virus rbsdv himetobi virus hipv successfully detected using simplified method detection results validated sequencing dot immunobinding assay indicating simplified method reliable detecting different viruses insects evaluation sensitivity method showed rsv hipv detected cdna crude extract diluted fold compared traditional pcr rna isolation simplified pcr method greatly reduces sample processing time decreases detection cost improves efficiency avoiding rna isolation conclusions simplified pcr method developed rapid detection rna virus single sbph without laborious rna isolation step offers convenient alternative traditional pcr method
alginate hydrogels combined soy protein isolate spi plant derived protein low immunogenicity appropriate biodegradability low cost produce biocompatible films microcapsules cell material interaction assessed use mouse embryotic fibroblast cells mef cells films results illustrate alginate spi hydrogel films support cell attachment spreading proliferation cell biology results combined degradation studies suggest hydrogels promising biomaterials soft tissue regeneration wound dressing materials wiley periodicals inc appl polym sci
social isolation rearing young adult rats model psychosocial stress provides nonpharmacological tool study alterations reminiscent symptoms seen psychosis previously demonstrated social isolation rats leads increased oxidative stress cerebral nox elevations investigated early alterations mrna expression leading increased nox brain rats exposed short period social isolation week real time polymerase chain reaction pcr mrna expression genes involved blood brain barrier bbb formation integrity orls vof vof leng vnr trank genes performed real time pcr experiments immunohistochemistry western blotting analysis showed increased expression genes related proteins isolated rats respect control animals expression specific markers bbb integrity matrix metalloproteinase mmp matrix metalloproteinase mmp occludin plasmalemmal vesicle associated protein also significantly altered week social isolation bbb permeability evaluated quantification evans blue dye extravasation well interstitial fluid significantly increased rats isolated week respect controls isolation induced bbb disruption also accompanied significant increase interleukin expression conversely differences nox levels detected time point study demonstrates bbb disruption precedes nox elevations brain results provide new insights interplay mechanisms linking psychosocial stress early oxidative stress brain disruption bbb development mental disorders
endothelial dysfunction impaired endothelial regenerative capacity key contributors high incidence cardiovascular disease patients chronic kidney disease ckd uremic toxins associated pathogenesis previous studies revealed uremic toxin para cresol cresol exerts antiproliferation effect human endothelial progenitor cells epcs mechanism remains unclear present study reactive oxygen species ros confirmed function signaling molecules regulate growth factor dependent epc proliferation epcs treated cresol using concentration range typically found ckd patients ros production analyzed fluorescence microscopy flow cytometry protein expression levels nicotinamide adenine dinucleotide phosphate oxidase major source ros analyzed western blot analysis mrna expression levels antioxidant genes assessed reverse transcription quantitative polymerase chain reaction analysis results revealed cresol partially inhibits ros production effect may associated significant reduction cytochrome alpha beta chain expression epcs increase glutathione peroxidase mrna expression also detected conclusion present study revealed antiproliferation effect cresol epcs might act via antioxidant activity results present study may facilitate understanding uremic toxin toxicity cardiovascular system
aminoacyl trna synthetases enzymes charge specific trnas cognate amino acids play essential role initial steps protein synthesis enzymes attractive targets drug development many microorganisms pressing need assays suitable compound screening developed high throughput assay measuring aminoacyl trna synthetase activity accompanying method preparing trna substrate assay performed well plates relies malachite green detection pyrophosphate indicator aminoacyl trna synthetase activity analysis trypanosoma brucei isoleucyl trna synthetase ilers activity showed assay exhibits sensitivity picomoles product yielded factor show assay applicable aminoacyl trna synthetases enzyme inhibition studies using assay found compound nsc inhibits recombinant ilers enzymology studies also performed rilers cat determined mol respectively assay facilitate screening compounds identify inhibitors aminoacyl trna synthetases
opportunity engage scientific research important often neglected component undergraduate training biology describe curriculum innovative course based undergraduate research experience cure appropriate large introductory cell molecular biology laboratory class leverages students high level interest cancer course highly collaborative emphasizes analysis interpretation original scientific data course students work teams characterize collection mutations human tumor suppressor gene via expression analysis yeast initially student pairs use qualitative quantitative assays assess ability mutant activate expression reporter genes localize mutation within structure facilitated discussion students suggest possible molecular explanations transactivation defects displayed mutants propose experiments test hypotheses execute second part course use western blot determine whether mutant levels reduced dna binding assay test whether recognition three target sequences compromised fluorescence microscopy assay nuclear localization students studying mutant periodically convene discuss interpret combined data course culminates poster session students present findings peers instructors greater biosciences community based experience provide recommendations development similar large introductory lab courses authors biochemistry molecular biology education published wiley periodicals inc behalf international union biochemistry molecular biology
several ways detect proteins cells one quite frequently used method flow cytometry method needs fluorescently labeled antibodies attach selectively protein investigated flow cytometric detection flow cytometry scans individual cells virtually without surrounding liquid scan many cells short time advantage flow cytometry adapted investigate transport proteins normal cancerous human cells cell lines transport proteins play important roles human metabolism absorption intestine excretion kidney protection cns compartment fetus xenobiotics vital functions depend transporters however several transporters overexpressed cancer cells overexpressed transporters pump anticancer drugs cells prevent curative effects detection quantitation types transporters cancer cells important reason review literature flow cytometric detection three studied transporters glycoprotein multidrug resistance associated proteins breast cancer resistance protein
cypb cytochrome enzyme implicated autosomal recessive primary congenital glaucoma pcg mechanism function cypb development pcg phenotype unknown previously investigators reported detection cypb mrna ciliary body epithelium neuroepithelium developing mouse eye employing situ hybridization techniques similarly additional investigators detected cypb mrna iris ciliary body non pigmented ciliary epithelial line cornea retinal pigment epithelium retina human adult eye using northern blotting study designed immunolocalize cypb protein various ocular structures normal human fetal adult eyes normal fetal adult eyes irrimunolabeled polyclonal antibody human cypb using indirect immunofluorescence compared appropriate controls intensity immunolabeling various ocular structures assessed qualitative semi quantitative techniques anterior segment anti cypb immunoreactivity detected early fetal development primitive ciliary epithelium well intense cypb non pigmented ciliary epithelium addition cypb also present corneal epithelium keratocytes layers iris pigmented epithelium retina however cypb absent trabecular meshwork samples general cypb immunolabeling human fetal eyes intense compared adult eyes cypb primarily immunolocalized non pigmented ciliary epithelium early fetal development addition cypb detected trabecular meshwork findings suggest abnormalities development trabecular meshwork pcg may result diminished absent metabolism important endogenous substrates ciliary epithelium due non functional cypb enzyme elsevier ltd rights reserved
intense focus studying human height done genetic analysis advance understanding heritability highly complex phenotypes describe detail properties previously unexplored trait drosophila melanogaster shares many salient properties human height total length pupal case varies among natural variants report among heritable traits reported species developed simple semiautomatic phenotyping system single operator reliably score individuals day precision automated system phenotyped individuals available mated subsequent generations uniquely archived future molecular work report broad sense narrow sense heritability estimates two biologically distinct data sets narrow sense heritability ranged broad sense heritability ranged present results mapping trait recombinant inbred lines suggests loci effect size panel propose pupal size genetics drosophila could represent model complex trait amenable deep genetic dissection using automated system described
current practice human immunodeficiency virus infected hiv candidates cells eligible kidney transplantation however optimal pretransplant count threshold remains defined evaluated clinical outcomes patients baseline cells among anti thymocyte globulin atg treated hiv negative hiv kidney transplants performed center median follow years rates acute rejection patient graft survival different groups occurrence severe lymphopenia cells however common among patients baseline count cells compared transplanted higher counts weeks weeks respectively transplant adjusting age baseline count cells independent predictor severe lymphopenia weeks relative risk confidence interval weeks transplant patients cells weeks higher probability serious infections first months transplant log rank findings suggest atg must used caution hiv kidney allograft recipients pretransplant count cells single center retrospective cohort study authors show anti thymocyte globulin treated hiv positive kidney transplant recipients baseline count cells higher risk severe lymphopenia cells associated nonopportunistic infections
neutrophil extracellular traps networks dna histones neutrophil proteins released response infectious inflammatory stimuli although component innate immune response nets implicated range disease processes including autoimmunity thrombosis protocol describes simple method canine neutrophil isolation quantification nets using microplate fluorescence assay blood collected using conventional venipuncture techniques neutrophils isolated using dextran sedimentation density gradient using conditions optimized dog blood allowing time attachment wells well plate neutrophils treated net inducing agonists phorbol myristate acetate platelet activating factor dna release measured fluorescence cell impermeable nucleic acid dye assay simple inexpensive method quantifying net release net formation rather causes cell death must confirmed alternative methods
interleukin cytokine classically related type immune responses whose cellular identity recently reevaluated identify new specialized helper subset called innate source referred innate lymphoid cell type past years associated allergic responses tumor immunology autoimmunity however review specifically focus role cells context parasitic infections summarize discuss evidence relating expression function parasitic infections particular emphasis helminth infections important health issue developing countries also provide general description classification parasites immune response cellular compartments activated context implications future directions towards complete understanding interesting new helper subset potential therapeutic use
extant literature established consistent association aspects reading motivation enjoyment self perceived ability reading achievement motivated readers generally skilled readers however developmental etiology relation yet investigated present study explores development motivation achievement association genetic environmental underpinnings applying cross lagged design sample twins examined relative contribution genetic environmental factors association reading enjoyment self perceived ability reading achievement children completed reading comprehension task self reported reading enjoyment perceived ability twice middle childhood years old results showed modest reciprocal association time reading motivation enjoyment perceived ability reading achievement reading motivation age statistically predicted development later achievement similarly reading achievement age predicted development later motivation reciprocal association observed beyond stability variables contemporaneous correlation largely explained genetic factors
proteomics studies identified ste related proline alanine rich kinase spak oxidative stress response osr exosomes isolated body fluids blood saliva urine proteomics studies likely overestimate number exosome proteins sought confirm extend observation using traditional biochemical cell biology methods utilized hek cells culture verify packaging ste kinases exosomes using series centrifugation filtration steps conditioned culture medium isolated hek cells isolated nanovesicles range show small vesicles express tetraspanin protein lack endoplasmic reticulum golgi markers consistent exosomes show western blot immunogold analyses exosomes express spak osr cotransporter nkcc show exosomes secreted cells also accumulated adjacent cells indeed exposing cultured cells exosomes produced cells expressing fluorescently labeled kinase resulted kinase finding way cytoplasm cells consistent idea exosomes serving cell cell communication vessels similarly coculturing cells expressing different fluorescently tagged proteins resulted exchange proteins cells addition show spak osr kinases entering cells exosomes preferentially expressed plasma membrane kinases exosomes functional maintain nkcc phosphorylated state
concerns pesticide exposure food consumption increased past several years pyrethroids applied insecticides throughout world human metabolism pyrethroids results urinary metabolites suitable biological monitoring objective study investigate relation food consumption urinary levels phenoxybenzoic acid pba general metabolite pyrethroids non occupational exposed adult population idi irccs rome italy information sodo demographic characteristics smoking diet self reported household pesticide exposure collected urinary pba level subject measured adjusted urinary creatinine found people consuming raw cooked vegetables five times weekly higher mean levels pba urine creatinine versus creatinine creatinine versus creatinine respectively subjects consuming less five times weekly multivariate model adjusting age sex bmi smoking household insecticide exposure high intake raw vegetables high intake cooked vegetables particular cruciferous leafy vegetables associated high urine pba levels creatinine results study suggest part variation pyrethrois intake explained vegetable intake elsevier ltd rights reserved
comprehensive view protein phosphorylation remains unmet challenge field cell biology mass spectrometry based proteomics one promising approaches identifying thousands phosphorylation events single experiment yet full breadth phosphoproteome yet elucidated article examined complementarity two methods phosphopeptide enrichment based either titanium dioxide tio enrichment phosphorylation motif specific immunoaffinity precipitation iap four different antibodies method identified nearly phosphoproteins however distinct populations phosphopeptides observed despite quantifying unique phosphorylation events using tio iap less sites common agreeing published literature ratio phosphorylation tio enriched data set approximated contrast ratio combined iap data sets differences suggest complementarity multiple enrichment methods also emphasize collective importance obtaining comprehensive view phosphoproteome
previous studies demonstrated targeting bradykinin receptors promising strategy counteract cognitive impairment related aging alzheimer disease hippocampus critical cognition abnormalities brain region linked decline mental ability nevertheless impact bradykinin signaling hippocampal function unknown therefore sought determine role hippocampal bradykinin receptors cognitive decline middle aged rats twelve month old rats exhibited impaired ability acquire retrieve spatial information morris water maze task single intra hippocampal injection selective antagonist des arg leu bradykinin dalbk nmol selective antagonist arg hyp thi tic oic hoe nmol reversed spatial learning memory deficits animals however drugs affect cognitive function month old rats suggesting absence nootropic properties molecular biology analysis revealed regulation expression hippocampal sub region pre frontal cortex month old rats whereas changes expression observed middle aged rats findings provide new evidence inappropriate hippocampal expression activation exert critical role spatial learning memory deficits middle aged rats therefore selective antagonists especially orally active non peptide antagonists may represent drugs potential interest counteract age related cognitive decline elsevier rights reserved
characterization quantitative analyses key transcription factors spermiogenesis necessary identification causal factors production seemingly normal sperm dysfunctions japanese black bulls elucidation whole aspect molecular mechanisms spermiogenesis livestock objective study obtain information regarding characterization individual changes activator camp responsive element modulator crem necessary normal progress spermiogenesis required transcriptional activity genes coding essential factors sperm fertilization ability rodents using testes japanese black bulls ability produce sperm indicating normal motility morphology bull crem tay one activator variants detected testes strongly livers reverse transcription polymerase chain reaction northern blotting variant localized nuclei spermatids shown indirect immunofluorescence homemade mouse antiserum motility morphology cauda epididymal sperm japanese black bulls examined quantitative analyses testicular activator crem confirm ability produce sperm normal motility morphology males percentages motile sperm sperm normal acrosomes morphologically normal sperm respectively quantitative analyses real time polymerase chain reaction using testicular rna bulls revealed relative expression levels activator crem variants testes varied significantly among bulls range results consistent suggestions crem tay involved spermiogenesis testes japanese black bulls expression levels activator crem variant mrnas testes varied significantly among individual bulls ability produce sperm normal motility morphology elsevier inc rights reserved
cartilage injuries one common musculoskeletal disorders although number techniques designed treat cartilage lesions current research focused tissue engineering methods recent advances molecular biology biotechnology polymer science led experimental clinical application various cell types biomaterials treatment cartilage injuries study reports exceptionally good growth chondrocytes scaffold based multiwalled carbon nanotubes mwcnts mwcnt based nanostructural scaffold fabricated employing plasma enhanced chemical vapor deposition technique articular cartilage specimens taken distal femur adolescent new zealand white rabbits chondrocytes obtained collagenase digestion scaffolds characterized using scanning electron microscopy sem energy dispersive ray spectroscopy edx cell seeded constructs visualized sem chondrocytes adhered mwcnt surfaces evenly distributed one week culturing number cells tripled mwcnt scaffolds respect culturing plastic flask cells displayed multiple cytoplasmic extensions interact mwcnts nanotubes bent cells cell morphology altered nanostructured surface study confirms mwcnt based surfaces provide good scaffold used stimulate formation cartilage tissue
context cell biology term mesoscale describes length scales ranging individual cell size molecular machines spatial regime small building blocks self organise form large functional structures comprehensive set rules governing mesoscale self organisation established making prediction many cell behaviours difficult impossible knowledge mesoscale biology comes experimental data particular imaging explore application soft ray tomography sxt imaging mesoscale describe structural insights technology generate also discuss sxt imaging complemented addition correlative fluorescence data measured cell combination two discrete imaging modalities produces view cell blends high resolution structural information precise molecular localisation data
intragenomic distribution five retrotransposon families copia mdg roo species melanogaster complex studied comparing results southern blotting technique males females situ hybridization degree structural polymorphism family different species also investigated restriction enzyme analysis found genomic distribution trait depends family species distribution roo mainly euchromatic four species heterochromatic distribution families copia mdg markedly different melanogaster simulans clades families mainly euchromatic melanogaster heterochromatic sibling species simulans clade copia mdg elements located chromosome differences genomic distribution unrelated structural conservation relation intragenomic distribution phylogeny transpositional activity role host genome discussed
background correct protein coding region identification important latent problem molecular biology field problem becomes challenge due lack deep knowledge biological systems unfamiliarity conservative characteristics messenger rna mrna therefore fundamental research computational methods aiming help patterns discovery identification translation initiation sites tis field bioinformatics machine learning methods widely applied based inductive inference inductive support vector machine isvm hand much attention given transductive inference based machine learning methods transductive support vector machine tsvm transductive inference performs well problems amount unlabeled sequences considerably greater labeled ones similarly problem predicting tis may take advantage transductive methods due fact amount new sequences grows rapidly progress genome project allows study new organisms consequently work aims investigate transductive learning towards tis identification compare results obtained inductive method results transductive inference presents better results measure sensitivity comparison inductive method predicting tis additionally presents least failure rate identifying tis presenting smaller number false negatives isvm isvm tsvm methods validated molecules representative organisms contained refseq database rattus norvegicus mus musculus homo sapiens drosophila melanogaster arabidopsis thaliana transductive method presented measure sensitivity higher also higher results obtained isvm isvm tsvm approaches implemented transdutis tool transdutis transdutis respectively available web interface approaches compared tishunter tis miner netstart tools presenting satisfactory results conclusions relation precision results similar isvm tsvm classifiers however results show application tsvm approach ensured improvement specially measure sensitivity moreover possible identify potential application tsvm organisms initial study phase identified sequences databases
cell capturing separation frequently involved researches immunology diagnostics pathology recent years different new methods cell capturing separation based microfluidic platform developed microfluidic chip rapid low cost detection implemented small sample reagent volumes review two methods microfluidic cell separation immune capture label free separation introduced immuno capture traditional method separate cells high specificity provide highly purified target cells newly developed label free method performs separation utilizing physical biological features target cells keep cell integrity activity although couple issues resolved microfluidic cell separation gets widespread commercial use multi system integration industrial scale manufacture already attracted extraordinary research attention path rapid development believed cell capturing separation methods based microfluidic chip broad application prospect life science biomedical field
fina filtration isolation nucleic acids novel extraction method utilizes vertical filtration via separation membrane absorbent pad extract cellular dna whole blood less min blood specimen treated detergent mixed briefly applied pipet separation membrane lysate wicks blotting pad due capillary action capturing genomic dna surface separation membrane extracted dna retained membrane simple wash step wherein pcr inhibitors wicked absorbent blotting pad membrane containing entrapped dna added pcr reaction without purification simple method require laboratory equipment easily implemented inexpensive laboratory supplies describe protocol highly sensitive detection quantitation hiv proviral dna whole blood model early infant diagnosis hiv could readily adapted genetic targets
compelling evidences point crucial role extracellular nucleotides adenosine triphosphate atp inflammatory conditions released extracellular space atp modulates migration maturation function various inflammatory cells via activating purinergic receptors family prx atp guided ion channel expressed structural cells alveolar epithelial smooth muscle cells well inflammatory cells including macrophages dendritic cells dcs cells prx shown interact prx promote nlrp inflammasome activation although prx already implicated allergic asthma role prx airway inflammation elucidated yet therefore used selective pharmacological antagonist genetic ablation investigate role prx ovalbumin ova driven model allergen induced airway inflammation aai prx antagonist bdbd treatment prx deficiency resulted alleviated broncho alveolar lavage fluid eosinophilia peribronchial inflammation cytokine production bronchial hyperresponsiveness furthermore prx deficient bone marrow derived dcs bmdcs showed reduced beta production response atp accompanied decreased prx expression attenuated priming capacity compared wild type bmdcs vitro moreover mice adoptively transferred prx deficient bmdcs exhibit diminished aai vivo conclusion data suggests prx signaling contributes aai pathogenesis regulating mediated cell priming via modulating beta secretion selective prx antagonists might new therapeutic option allergic asthma
present study examines indian publications vitamin deficiency covered scopus database experiencing annual average growth rate citation impact per paper international collaborative publication share global publications share vitamin deficiency came several countries top productive countries accounted share global publications share global citations large number indian organizations authors participated indian research vitamin deficiency top organizations authors contributed publications share citation share respectively indian output citations medicine among subjects contributed largest publications share followed biochemistry genetics molecular biology pharmacology toxicology pharmaceutics nursing neurosciences agricultural biological science immunology microbiology total indian publications appeared several journals top journals contributed share india output top highly cited papers registered citations together contributed citations leading average citation per paper concludes urgent need frame national policy area undertake recognize vitamin deficiency public health problem allocate healthcare funds area
peroxisomes thought played key role evolution metabolic networks photosynthetic organisms connecting oxidative biosynthetic routes operating different compartments various oxidative pathways operating peroxisomes higher plants fairly well characterized reactions present primitive peroxisomes microbodies algae poorly understood screening chlamydomonas insertional mutant library identified strain strongly impaired oil remobilization defective cre cracx gene encoding member acyl coa oxidase dehydrogenase superfamily purified recombinant cracx expressed escherichia coli catalyzed oxidation fatty acyl coas trans enoyl coa produced result demonstrated cracx genuine acyl coa oxidase responsible first step peroxisomal fatty acid beta oxidation spiral fluorescent protein tagging study pointed peroxisomal location cracx importance peroxisomal beta oxidation algal physiology shown impact mutation turnover day night cycles moreover nitrogen depletion mutant accumulated oil wild type illustrating potential beta oxidation mutants algal biotechnology study provides experimental evidence plant type beta oxidation involving producing acyl coa oxidation activity already evolved microbodies unicellular green alga chlamydomonas reinhardtii
cellular enzymes interact post translationally regulated fashion govern individual cell behaviors yet current platform technologies limited ability measure multiple enzyme activities simultaneously single cells developed multi color forster resonance energy transfer fret based enzymatic substrates use microfluidics platform simultaneously measure multiple specific protease activities water oil droplets contain single cells integrating microfluidic platform computational analytical method proteolytic activity matrix analysis prama able infer six different protease activity signals individual cells high throughput manner similar cells experimental run characterized protease activity profiles single cell resolution several cancer cell lines including breast cancer cell mda lung cancer cell line leukemia cell line using live cell situ cell lysis assay formats special focus metalloproteinases important metastasis ability measure multiple proteases secreted expressed individual cells allows characterize cell heterogeneity potential applications including systems biology pharmacology cancer diagnosis stem cell biology elsevier rights reserved
main aim swedish physical activity fitness cohort study spaf describe physical fitness physical activity health lifestyle across part lifespan assess influences factors environment personal factors genetics inevitable dropout longitudinal studies may systematic aim first paper second follow spaf provide dropout analysis consider extent participants years age remain representative sample original adolescent study population additional aims provide overview study protocol ongoing study population ongoing study participants spaf born second follow age still representative study cohort terms sex adolescent geographical area upper secondary school program adolescent body composition muscular strength muscular endurance however higher physical activity among women higher aerobic capacity adolescence decreased risk dropout important interpreting results longitudinal studies adjust systematic dropout could bias conclusions drawn results
satellite cells resident hypoxic niches tissue hypoxia recognized key factor maintain stem cells undifferentiated state herein report hypoxia plays fundamental role also activating myogenesis particular found activation hypoxia inducible factor hif alpha hypoxia murine skeletal myoblasts leads activation myod noncanonical wnt beta catenin pathway moreover chemical inhibition hif alpha activity significantly reduces differentiation thus confirming crucial role process furthermore hypoxia preconditioned myoblasts induced differentiate normoxic conditions tend form hypertrophic myotubes results support notion hypoxia plays pivotal role activating regeneration process directly inducing myogenesis hif alpha although preliminary findings may suggest new perspective novel therapeutic targets treatment several muscle diseases cirillo resmini ghiroldi piccoli bergante tettamanti anastasia activation hypoxia inducible factor alpha promotes myogenesis noncanonical wnt pathway leading hypertrophic myotubes
background suppressor cytokine signaling socs methylation associated clinical features outcomes cancer patients however roles determining treatment response transarterial chemoembolization tace patients hepatocellular carcinoma hcc remain unknown results found presence socs methylation significantly associated major clinical features hcc patients including tumor stage lymph node vascular invasion note observed presence socs methylation closely related tace response prognosis analyses hcc patients socs methylation presence poorer prognosis indicated lower year survival rates shorter mean survival period without multivariate cox analysis confirms prognostic role presence socs methylation hcc patients receiving tace treatment materials methods total hcc patients receiving tace enrolled study tumor samples obtained echo guided fine needle aspiration genomic dna tumor samples purified socs socs methylation status detected using methylation specific polymerase chain reaction treatment responses tace patients evaluated procedure patients followed prognosis analysis conclusions finding suggests presence socs methylation marker predict treatment response prognosis hcc patients receiving tace therapy
objective explore correlation plasma beta microglobulin beta senescence factor age heart liver kidney function well predictive value beta human metabolism function senescence patients methods cases healthy people different ages selected automatic biochemical analyzer used test beta plasma based immuno turbidimetry also biochemical indexes correlation beta age gender biochemical indexes analyzed results beta positively correlated age difference statistical significance significantly negative correlated hdl positively correlated bun crea cys ldh hbdh ast glb hcy conclusions beta closely correlated age heart kidney liver biochemical indexes taken important biomarker human body function anti senescence significant basic research clinical guidance values
sclerospora graminicola sacc schroet oomycete pathogen pennisetum glaucum infects meristematic tissues young seedlings motile zoospores sporangia encyst germinate penetrate plant tissue resistance invading pathogen governed specific recognition conserved pathogen associated proteins elicitors present study zoospore protein isolated purified homogeneity combination size exclusion high performance liquid chromatography hplc crude fractionated protein able elicit array defence responses resistant susceptible cells pearl millet treatment cultured cells pearl millet partially purified elicitor protein resulted rapid loss cell viability resistant cells percentage cell death higher resistant susceptible cells cultures resistant cells showed sharp increase extra cellular compared susceptible cells treated crude elicitor increased oxidative burst also recorded cells treated crude elicitor purified elicitor showed unique properties purified protein acidic revealed isoelectric focusing ief matrix assisted laser desorption ionisation maldi analysis showed elicitor molecular mass daltons primary structure determined terminal edman degradation searches blast reveal similarities known plant pathogenic oomycete elicitor higher activities important defence related enzymes phenylalanine ammonia lyase pal peroxidase resistant cell cultures susceptible cell cultures treated purified elicitor clearly evident studies gene expression northern blotting heterologus peroxidase pal oxalate oxidase probes showed mrna transcripts strongly regulated resistant cell cultures within min elicitor treatment purified elicitor also demonstrated strong concentration dependent sterol binding purified elicitor protein belongs class low molecular weight oomycete elicitors sterol carrier properties identified low molecular weight protein elicitor displays unique properties exploited synthesis novel molecules eco friendly crop protection
background one significant contributors morbidity death patients burns infection accounts post burn fatalities concerns development antibiotic resistance burn related pathogens aims study identify antibiotic resistance trends four common burn related pathogens six year period patients methods study used prospectively collected identified aggregate data burn patients admitted burn unit database query included patient demographics along data regarding cultures source wound sputum urine stool blood included isolated pathogens antibiotic resistance profiles profiles constructed using mean inhibitory concentration standards determine whether pathogen susceptible intermediate resistant antibiotic aggregated data used construct heat map four common pathogens resistance profiles six year study period results patients burns positive cultures negative cultures study positive culture group significantly older longer hospitalizations compared negative group analysis antibiotic resistance heat maps constructed four commonly isolated pathogens methicillin sensitive staphylococcus aureus enterococcus faecalis methicillin resistant aureus pseudomonas aeruginosa indicated lack notable resistance patterns individual pathogens conclusions taken together results indicate discernible patterns antibiotic resistance across time six years four common burn related pathogens conclude antibiotic choice burn patients based previous hospital trends may flawed strategy emerging genomic technology deliver point care pathogen specific antibiotic sensitivities via polymerase chain reaction may needed appropriately guide antibiotic choice
helminths products suppress host immune response escape host defense mechanisms establish chronic infections current studies indicate macrophages play key role immune response pathogen invasion polarized two distinct phenotypes present paper examines impact adult hymenolepis diminuta tapeworm excretory secretory products esp thp macrophages monocytes differentiated macrophages cultured living parasite esp findings indicate esp considerable impact human thp macrophages macrophages treated parasite esp without lps demonstrated reduced expression cytokines alpha tnf alpha tgf beta chemokines mip alpha rantes icam cxcl expression rose esp stimulation addition inflammatory factor expression rose significantly macrophages exposed living parasites regarding induced repressed pathways significant differences found esp concerning influence phosphorylation erk stat stat ampka akt hsp hck superior immunosuppressive properties esp compared demonstrated lower levels beta tnf alpha following stimulation presence esp found stimulate mixed macrophage phenotypes findings indicate new molecular mechanisms involved response human macrophages tapeworm infection could valuable tool understanding mechanisms underlying processes immune regulation cestodiasis
elaiophylin unusual symmetric antibiotic macrodiolide produced bacterial modular polyketide synthase assembly line probe mechanism selectivity diolide formation sought reconstitute ring formation vitro using non natural substrate incubation recombinant elaiophylin thioesterase cyclase synthetic pentaketide analogue presumed monomeric polyketide precursor elaiophylin specifically acetylcysteamine thioester produced novel membered symmetric macrodiolide linear dimeric thioester intermediate ring formation indicates iterative use thioesterase active site ligation subsequent cyclization furthermore elaiophylin thioesterase acts mixture pentaketide tetraketide thioesters give symmetric decaketide diolide novel asymmetric hybrid nonaketide diolide thioesterases potential tools vitro construction novel diolides
inherent property antibodies binding antigen high specificity makes strong candidate sensing detection applications microscale patterning antibodies desired miniaturization sensors fundamental cell biology studies however existing methodologies pattern antibodies microscale multi step work demonstrate microscale patterning antibodies glass coverslip single step photolithography process microscale features photoresist generated coverslip using photolithography antibody solution incubated acetone lift antibody incubated photoresist subsequent washing isopropanol ipa produced micro array antibodies functionality patterned primary antibody confirmed using corresponding antigen strict controls one striking features method patterning process steps chemicals inherently improve adhesion antibodies glass without need functionalize glass surface performed ultrasonication test detergent washing test scotch tape test show improved adhesion using appropriate controls show interaction taking place antibodies glass surface process stronger simple physisorption taking place antibodies glass surface without treatment
fipronil amino dichloro trifluoromethyl phenyl trifluoromethyl sulfinyl pyrazole carbonitrile highly active broad spectrum insecticide phenyl pyrazole family targets gamma amino butyric acid gaba receptor although fipronil presently widely used insecticide acaricide little information available respect metabolic fate disposition mammals study designed investigate vitro human metabolism fipronil examine possible metabolic interactions fipronil may substrates fipronil incubated human liver microsomes hlm several recombinant cytochrome cyp isoforms obtained biosciences hplc used metabolite identification quantification fipronil sulfone predominant metabolite via cyp oxidation max values human liver microsomes mum nmol protein min respectively rat liver microsomes rlm max mum nmol protein min respectively cypa major isoform responsible fipronil oxidation humans cypc considerably less active human cyp isoforms minimal activity toward fipronil expression cytochrome essential cypa manifest high activity toward fipronil ketoconazole specific inhibitor cypa inhibits hlm activity toward fipronil concentration mum oxidative activity toward fipronil single donor hlms correlated well ability oxidize testosterone interactions fipronil cypa substrates testosterone diazepam also investigated fipronil metabolism activated testosterone hlm cypa supersomes testosterone beta hydroxylation hlm inhibited fipronil fipronil inhibited diazepam demethylation little effect diazepam hydroxylation results suggest fipronil potential interact wide range xenobiotics endogenous chemicals cypa substrates fipronil may useful substrate characterization cypa hlm elsevier ireland ltd rights reserved
objectives investigate epidemiological traits metallo beta lactamase mbl producing pseudomonas aeruginosa mppa clinical isolates collected asian network surveillance resistant pathogens ansorp methods total mppa clinical isolates collected six asian countries ansorp mbl gene detected pcr amplification genetic organization class integron carrying mbl gene cassette investigated pcr mapping sequencing southern blotting repetitive sequence based pcr multilocus sequence typing mlst experiments performed characterize isolates results pcr sequencing experiments detected bla vim bla vim bla imp bla imp genes mbl genes located chromosome isolates except one furthermore mbl genes located class integron mppa isolates malaysia thailand sri lanka korea identified sequence type mlst three vim producing isolates india identified one isolate harbouring vim taiwan identified conclusions aeruginosa might play role dissemination mbl genes asian countries
two keggin type polyoxometalates poms containing glycine hgly pwo hgly siwo synthesized evaluated mushroom tyrosinase inhibitors spectrophotometric method results showed hgly pwo hgly siwo could strongly inhibit diphenolase activity tyrosinase inhibition mechanisms reversible half inhibition concentration values estimated mmol respectively inhibition kinetics analysis lineweaver burk plots indicated hgly pwo uncompetitive inhibitor mmol whereas hgly siwo noncompetitive inhibitor mmol study may help extend application poms fields medicine food preservation international union biochemistry molecular biology inc
electrochemical detection ascorbic acid investigated using cobalt iii ferritin immobilized self assembled monolayer modified gold electrode phosphate buffer solution modified electrode showed excellent electrochemical activity oxidation response modified electrode examined using cyclic differential pulse voltammetry techniques resulting biosensor showed linear response concentration range sensitivity detection limit based signal noise ratio electrochemical parameters including charge transfer coefficient apparent heterogeneous electron transfer rate constant found sec respectively shown using modified electrode determined high sensitivity low detection limit high selectivity international union biochemistry molecular biology inc
female reproductive tract frt mucosal immune system serves first line defense better knowledge genital mucosa therefore essential understanding pathogenicity different pathogens including hiv gamma delta cells prototype unconventional cells represent relatively small subset cells defined expression heterodimeric cell receptors tcrs composed gamma delta chains sets apart classical much better known helper cells cytotoxic cells defined alpha beta tcrs cells often show tissue specific localization enriched epithelium cells orchestrate immune responses inflammation tumor surveillance infectious disease autoimmunity present method reproducibly isolate analyze human endocervical intraepithelial lymphocytes used endocervical cytobrush samples women participating women interagency hiv infection study wihs knowledge cells interactions conditions insult vaginal mucosal could applied clinical study mucosal vulnerability addressed including development vaginal microbicides addition knowledge mucosal cell responses potential application cell based immune therapy treating infectious diseases
background perform molecular epidemiological analysis viral conjunctivitis among excess conjunctivitis cases recorded university hospital patras greece period march june methods structured questionnaire containing demographic clinical data developed order collect retrospective data cases eye swab specimens collected molecular detection adenoviruses performed nested pcr positive results confirmed sequencing determine relatedness isolated sequences phylogenetic analysis conducted results epidemiological analysis including retrospective data included conjunctivitis cases male female based clinical features cases diagnosed viral origin male female bacterial origin male female undefined conjunctivitis outbreak excess cases included cases affected age groups regardless gender predilection positive samples indicated samples adv adv conclusions molecular analysis could define cause viral conjunctivitis epidemiological data contributed assessment risk factors underlined possible preventive measures study one viral conjunctivitis greece outbreak underscores need national surveillance system acute infectious conjunctivitis outbreaks epidemiological well molecular investigation hadv ocular infections rather absent greece surveillance system viral conjunctivitis
background industrial workhorse fungus trichoderma reesei typically exploited ability produce cellulase enzymes whereas use fungus expression proteins homologous heterologous still limited identifying transformants expressing target protein tedious task due low transformation efficiency combined highly variable expression levels transformants routine methods identification include pcr based analysis western blotting crude activity screening time consuming techniques simplify screening adapted peptide system foot mouth disease virus fmdv reesei express readily screenable marker protein translated target protein peptide sequence allows multiple independent genes transcribed single mrna upon translation peptide sequence causes ribosomal skip generating two independent gene products peptide translated skip occurs two terminal amino acids glycine proline resulting addition extra amino acids terminus upstream protein single proline addition terminus downstream protein test approach cloned two heterologous proteins either side modified peptide secreted cellobiohydrolase enzyme cela penicillium funiculosum target protein intracellular enhanced green fluorescent protein egfp marker protein using straightforward monitoring egfp expression shown efficiently monitor expression target cela protein results expression cela egfp via fmdv peptide sequence resulted successful expression test proteins reesei separation two polypeptides via modified peptide similar efficient cela efficiently secreted whereas egfp remained intracellular proteins expressed cloned either order cela egfp egfp cela however egfp expression functionality dependent upon order transcription specifically expression cela linked egfp expression orientation whereas expression cela could reliably correlated egfp fluorescence construct whereas egfp stability fluorescence affected gene order cela expressed secreted exhibited expected functionality orientations conclusions successfully demonstrated two structurally unrelated proteins expressed reesei using fmdv peptide approach however order genes important addition single proline terminus egfp orientation appear affect fluorescence correlated well cela expression addition amino acids terminus egfp orientation however appeared severely reduce fluorescence stability could linked cela expression molecular biology tool implemented study provide efficient strategy test expression heterologous proteins reesei also providing novel platform developing fungus efficient multi protein expressing host using single polycistronic gene expression cassette additional advantage system expressed proteins theoretically produced equimolar ratios originate single transcript unlike internal ribosome entry site ires mediated polycistronic expression cistron translated equimolarly ribosomal dissociation reloading cistrons
protein protein interactions fundamental virtually functions cell large fraction interactions involve short peptide motifs increased interest targeting using peptide based therapeutics peptides benefit specific relatively safe easy produce also easy modify using chemical synthesis molecular biology techniques however significant challenges remain regarding use peptides therapeutic agents identification peptide motifs difficult peptides typically display low cell permeability sensitivity enzymatic degradation review outline principal highthroughput methodologies motif discovery describe current methods overcoming pharmacokinetic bioavailability limitations
beta defensin like gene cloned isoforms fbdi identified expressed sequence tag est library early developmental stages olive flounder paralichthys olivaceus fbdi cdna clones show identical amino acid sequences residues signal peptide residues mature peptide however propiece region varies sequence length amino acid residues predicted molecular weight mature peptide kda predicted isoelectric point showing anionic properties genomic organisation isoforms analysed using bacterial artificial chromosome bac dna containing fbdi gene southern blotting sequence analyses fbdi bac dna confirmed fbdi isoforms cluster locus exhibit conserved gene organisation reported fish defensin genes fbdi mrna expressed constitutively early developmental stages hatching pathogen challenge induced fbdi expression head kidney juvenile fish also produced recombinant fbdi peptide smfbd using expression plasmid pet examined bioactivity toward escherichia coli elsevier ltd rights reserved
new approach reported based proton nuclear magnetic resonance nmr spectral data study qualitatively quantitatively hydrolysis level complex lipid mixtures based detailed study spectra tri mono glycerides fatty acids validated using mixtures standard compounds simulate complex mixtures formed lipid digestion aim nmr spectra pure compounds well mixtures containing different known proportions triglycerides diglycerides diglycerides monoglycerides monoglycerides fatty acids acquired mixtures cover broad range concentrations simulate edible oils fats vegetable animal origins including fish different levels hydrolysis equations based spectral data proposed determine molar percentage different kinds compounds may formed lipid digestion thus allowing quantification advance lipolysis best knowledge first time method based nmr spectral data quantify triglycerides well partial glycerides fatty acids complex lipid mixtures coming lipolysis proposed methodology offers many advantages useful fields food technology nutrition also others like enzymology pharmacology medicine petrochemistry among others authors published elsevier ltd
polyomavirus bkpyv isolated urine kidney transplant patient soon identification bkpyv characterized kidney tropic virus responsible significant fraction rejection transplant kidney host moreover experimental conditions bkpyv able transform different types animal human cells induce tumors different histotypes experimental animals bkpyv dna sequences detected healthy individuals cancer patients using polymerase chain reaction shouthern blot hybridization methods serum antibodies polyomavirus revealed using immunological techniques however cross react polyomaviruses jcpyv simian virus non specific data indicate need novel immunological methods new investigations check specific manner bkpyv spread humans aim mimotopes bkpyv structural capsid protein employed specific immunological reactions igg antibodies human serum samples indirect enzyme linked immunosorbent assay synthetic peptides mimicking immunogenic epitopes bkpyv set employed test sera healthy adult subjects data innovative immunological assay indicate serum antibodies bkpyv mimotopes detectable healthy subjects ranging years old overall prevalence serum samples reacted bkpyv mimotopes strong points investigation novelty immunological method simplicity approach specificity bkpyv antibody reaction mimotopes
number significant studies field cell biology revealed another pattern intracellular signal transduction cells transmit information dynamics key signaling molecules dynamical properties demonstrated key factor dictating cell fate including cell cycle arrest permanent cell cycle arrest cell death previous studies showed negative feedback regulation pathway sgk dynamics sgk never reported therefore used different dosing strategies wogonin affect sgk dynamics investigate impact cell response key factors apaf bax gadda pml ypel related cell cycle arrest senescence apoptosis measured different time points incubation wogonin western blot quantitative reverse transcriptase polymerase chain reaction analysis used examine protein mrna expression genes addition also used beta galactosidase staining flow cytometric analysis verify results found wogonin inhibited cell viability downregulated sgk protein levels wogonin could induce non small cell lung cancer cells cell cycle arrest senescence apoptosis respectively sgk dynamics showed significant differences different cell responses together findings showed sgk protein dynamics important part intracellular signaling directly influencing cellular response decisions
introduction sodium glucose transporter sglt inhibitors inhibit glucose absorption proximal renal tubules drugs also affect many anthropometric metabolic parameters various mechanisms action areas covered present available evidence regarding effects sglt inhibitors decrease body weight mainly due reduction total fat mass sglt inhibitors decrease blood pressure levels serum uric acid levels may also reduce degree diabetes related albuminuria effects may contributed beneficial cardiovascular effects seen empa reg outcome trial hand sglt inhibition induced natriuresis osmotic diuresis could lead decrease extracellular volume small increase serum low density lipoprotein cholesterol observed sglt inhibitors small increase serum phosphate concentration reported drugs due increased phosphate reabsorption combined increase serum parathormone may adversely affect bone homeostasis rare cases sglt inhibitors administration may followed euglycemic diabetic ketoacidosis expert opinion sglt inhibitors improve many aspects human metabolism may beneficial diabetic patients certain precautions followed clinicians administration drugs
carcinoma associated fibroblasts cafs play pivotal role promoting growth invasion metastasis tumor cells however date little known oncogenic mechanisms cafs study aimed identify microenvironmental factors involved tumor development progression directed cafs liver metastases tissue samples collected patients colorectal liver metastases used study histological morphological characterization samples performed using hybridization immunohistological assays rna expression smooth muscle actin alpha sma measured northern blotting expression plasminogen activator inhibitor type pai measured enzyme linked immunosorbent assay elisa result expression thy alpha sma identified cafs normal liver samples negative alpha sma thy compared epidermal growth factor egf tumor necrosis factor tnf incubation expression alpha sma increased significantly following transforming growth factor tgf incubation platelet derived growth factor pdgf caused significant suppression alpha sma expression pai expression significantly lower unstimulated fibroblasts compared tgf treated fibroblasts levels pai transcription significantly higher cafs patient samples compared healthy controls taken together findings suggest cafs may important migration matrix degradation invasion angiogenesis tumors tgf may promote activation pai transcription cafs
secreted phosphoprotein spp also known osteopontin expressed large pyramidal neurons primary motor cortex certain primate species including macaque monkeys rodents based suggested spp expression may reflect functional structural specialization highly developed corticospinal systems present study characterized spp human central nervous system investigating expression primary somatosensory cortex spinal cord addition although small number spp positive pyramidal neurons observed number smaller cervical segment spinal cord spp principally expressed choline acetyltransferase positive motor neurons lamina also examined spp expression patients amyotrophic lateral sclerosis als disease characterized degeneration motor neurons spp expression compared neurons size range expression spinal cord als patients lower subjects without als spp expression especially reduced surviving large neurons spinal cord als patients results support concept spp role specialization motor projection neurons suggest reduced expression may implicated neurodegeneration seen als
purpose review loss body mass exercise intolerance common findings chronic obstructive pulmonary disease often difficult reverse despite optimal nutritional intake similar findings reported healthy individuals high altitude exposure role hypoxia modulating metabolism largely investigated vitro animal studies fragmentary knowledge regarding hypoxia effects invivo human metabolism paper reviews recent literature regarding effects chronic exposure hypoxia metabolism particularly comparing chronic obstructive pulmonary disease patients humans exposed high altitude recent findings hypoxia important metabolic effects many oxygen sensitive regulatory mechanisms work hypoxia inducible factor recent literature regarding hypoxic stimulus pathological implications deals largely hypoxia inducible factor related findings hypoxia inducible factor pivotal adaptation chronic hypoxia induces gene expression fructose biphosphatase enzyme switching glucose metabolism towards glycolysis allowing energy production anaerobic conditions hypoxia inducible factor also involved development anorexia induces promoter leptin gene particularly important future therapeutic implications findings related hypoxia inducible factor polymorphism interaction molecules especially estrogens clinical evolution disease summary malnutrition worsening factor chronic obstructive pulmonary disease similarities chronic obstructive pulmonary disease altitude exposure point importance hypoxia regard better understanding underlying mechanisms help find alternative therapeutic approaches
conditionally transformed human myocardial cell lines would valuable resource studying human cardiac cell biology generated clonal human fetal cardiocyte cell lines transfection fetal ventricular cardiac cell clones plasmid containing replication defective mutant temperature sensitive strain tsa multiple resulting cell lines showed similar features namely antigen tag expression permissive degrees restrictive degrees temperatures extended growth capacity comparison parental wild type grown permissive temperature temperature dependent serum responsive growth incompletely differentiated fetal phenotype similar permissive restrictive temperatures presence absence serum transformed myocyte phenotype demonstrated using immunocytochemistry western northern blotting reverse transcription polymerase chain reaction pcr cell lines expressed skeletal alpha actin atrial natriuretic peptide anp keratins sarcomeric myosin heavy chain desmin immunoreactive sarcomeric actin expressed predominantly truncated protein approximately phenotype transformed cells differs wild type parental cells well reported others used tag immortalize rodent human ventricular myocytes cell lines provide useful tool study molecular mechanisms regulating growth differentiation human cardiac muscle cells
study evaluated prognostic potential functional regulation human nature antisense brain derived neurotrophic factor antisense non small cell lung cancer non small cell lung cancer carcinoma adjacent non carcinoma lung tissues extracted patients endogenous brain derived neurotrophic factor antisense expression levels compared quantitative reverse transcription polymerase chain reaction clinical relevance endogenous brain derived neurotrophic factor antisense expression level patients clinicopathological variances overall survival analyzed potential brain derived neurotrophic factor antisense independent prognostic factor non small cell lung cancer also evaluated vitro non small cell lung cancer cell lines brain derived neurotrophic factor antisense upregulated forced overexpression effects brain derived neurotrophic factor antisense upregulation non small cell lung cancer vitro survival proliferation migration evaluated viability dimethylthiazol diphenyl tetrazolium bromide transwell assays brain derived neurotrophic factor antisense lowly expressed non small cell lung cancer carcinoma tissues downregulated late stage carcinomas brain derived neurotrophic factor antisense downregulation closely associated non small cell lung cancer patients advanced tumor lymph node metastasis stage positive status lymph node metastasis confirmed independent prognostic factor patients poor overall survival non small cell lung cancer cell lines forced overexpression brain derived neurotrophic factor antisense alter cancer cell viability significantly tumor suppressive effect inhibiting vitro non small cell lung cancer proliferation migration endogenous brain derived neurotrophic factor antisense non small cell lung cancer carcinoma could potential biomarker predicting patients prognosis overexpressing brain derived neurotrophic factor antisense may also therapeutic potential inhibiting non small cell lung cancer tumor growth
present work provide extensive detailed study highly ionized like ions diagnose extreme ultraviolet euv soft ray sxr transitions shell electron excitation shell higher shells determined energy levels lifetimes lowest fine structure levels adopting multiconfiguration dirac fock mcdf inclusion quantum electrodynamics qed well breit corrections first order perturbation theory also reported complete radiative data strong electric dipole transitions within lowest levels compared calculated results theoretically calculated experimentally measured results available literature measure credibility genuineness results achieve good agreement insufficiency adequate complete atomic data higher levels highly ionized like ions literature performed equivalent parallel calculations implementing fully relativistic distorted wave flexible atomic code fac ensure accuracy results additionally also presented transition wavelengths alpha transitions high like ions using moseley law believe large amount atomic data presented paper may useful fusion astrophysical plasma several applications especially lithography cell biology
therapeutic interventions advanced prostate cancer pca center inhibiting androgen receptor downstream signaling pathways resistance androgen deprivation therapy antagonists inevitable molecular mechanisms driving castration resistant pca pca primarily involve alterations expression activity detailed molecular biology work past decade discussed length review article revealed several transcripts result alternative splicing splice variants increased cell mouse models pca pca tumors several variants lack ligand binding domain retain ability bind dna activate transcription linking constitutive function therapeutic failure arv variant endogenously detected protein level thus undergone thorough molecular characterization clinical trials pca currently investigating arv utility biomarker new therapeutics inhibit arv overall review illustrate historical perspectives splice variant discovery using fundamental molecular biology techniques changed clinical approach therapeutic decisions strategy body work investigating splice variants pca represents true example translational research bench bedside
cooh terminal ptha encoding three nuclear localizing signals nls amplified polymerase chain reaction pcr plasmid xanthomonas axonopodis citri pathogen citrus canker disease sense antisense strands nls cloned pbi vector ptha nls driven camv promoter transferred sweet orange via agrobacterium mediated transformation successful integration confirmed pcr southern blotting sense nls nls antisense nls nls transgenic clones obtained expression nls fragment analyzed pcr real time pcr western blotting specific nls protein detected nls transgenic clones vitro assay pin puncture inoculation performed cfu bacterial solution nls transgenic clones showed typical lesion development typical symptoms observed wild types nls transgenic clones vivo assay results indicated nls transgenic clones showed less disease incidence comparison wild types nls transgenic clones pin puncture inoculation performed cfu minimum disease incidence sucarri sweet orange bingtang sweet orange cfu pathogen spray inoculated nls transgenic clones show symptom even concentration raised cfu disease incidence wild types nls transgenic clones disease development whatever concentration inoculum two transgenic clones confirmed resistant citrus canker disease repeated inoculation results suggested transformation nls sense strands may offer effective way acquire resistance citrus canker disease
chronic inflammation plays important role heart failure complement components might useful markers prognosis set evaluate predictive value clinical outcomes patients cardiac resynchronization therapy crt determined complement levels scb also terminus prohormone brain natriuretic peptide probnp heart failure patients prospective single center observational study months crt implantation crt reduced hazard ratio independent probnp factors reclassification observed significant net reclassification improvement nri integrated discrimination improvement idi patients crt elevated levels increase risk mortality independent probnp levels factors crt exerts anti inflammatory effect reducing complement activation
introduction clopidogrel antiplatelet drug widely used patients acute coronary syndromes stroke despite adequate antiplatelet therapy patients develop acute ischemic events partly attributed fact poor inhibition platelet reactivity despite treatment study aimed assess impact clinical demographic variables cytochrome cypc loss function polymorphisms platelet response clopidogrel evaluated using impedance aggregometry east european population methods study included clopidogrel treated patients acute coronary syndromes noncardiogenic ischemic stroke platelet aggregation evaluated impedance aggregometry cypc loss function polymorphisms detected using polymerase chain reaction restriction fragment length polymorphism technique various clinical demographic data also recorded results data set patients responders nonresponders clopidogrel therapy distribution cypc polymorphisms follows patients cypc wild type homozygotes patients cypc heterozygotes patients cypc heterozygotes patients cypc homozygotes highest level association clopidogrel response status found cypc polymorphisms concomitant aspirin treatment leukocyte platelet count history myocardial infarction arterial hypertension ward patients admitted conclusion prevalence clopidogrel resistance east european population line reported western populations clopidogrel response significantly influenced presence cypc polymorphisms interestingly concomitant use aspirin significant impact platelet response clopidogrel indicating synergic interaction drugs
purpose report genetic analysis complex condition serbian family four siblings wherein two progressive myoclonic epilepsy pme congenital deafness one isolated congenital deafness icd one healthy methods results molecular diagnosis performed southern blotting confirmed unverricht lundborg disease available sibling pme sibling icd heterozygote expansion mutation cstb demonstrated recombination event marker cstb gene identified delc txfs mutation fourth exon transmembrane protease serine tmprss gene maps close proximity cstb responsible nonsyndromic deafness sibling pme well discussion best knowledge first genetic confirmation coexistence two mutations
rationale forkhead box regulatory cells tregs key players maintaining immune homeostasis evidence suggests tregs respond environmental cues permit suppress inflammation atherosclerosis driven inflammation affects treg homeostasis mechanisms governing phenomenon unclear objective address whether atherosclerosis impacts treg plasticity functionality apoe mice effect treg plasticity might pathology atherosclerosis methods results demonstrate atherosclerosis promotes treg plasticity resulting reduction cxcr tregs accumulation intermediate like interferon ifn gamma ccr treg subset tregs within aorta importantly tregs arise atherosclerosis bona fide tregs rather effector cells show tregs recovered atherosclerotic mice dysfunctional suppression assays using adoptive transfer system plasticity prone mira tregs demonstrate elevated ifn gamma mira tregs unable adequately reduce atherosclerosis arterial macrophage content within apoe mice comparison mira tregs finally via single cell rna sequencing real time polymerase chain reaction show tregs possess unique transcriptional phenotype characterized coexpression treg lineage genes downregulation treg related genes including ikzf ikzf tigit lilrb addition ingenuity pathway analysis implicates ifn gamma ifn alpha interleukin interleukin ctla cytotoxic lymphocyte associated protein cell receptor csnkb related pathways regulating treg plasticity conclusions atherosclerosis drives treg plasticity resulting accumulation dysfunctional ifn gamma tregs may permit arterial inflammation atherogenesis
pimaricin important polyene antifungal antibiotic binds ergosterol extracts fungal membranes previous work two pimaricin derivatives improved pharmacological activities another derivative showed antifungal activity produced mutant strain streptomyces chattanoogensis monooxygenase gene scng inactivated furthermore inactivation dehydratase domain pimaricin polyketide synthases pkss resulted specific accumulation undesired metabolite suggesting improvement corresponding dehydratase activity may reduce eliminate accumulation accordingly didomain within pimaricin pks swapped fully active didomain predicted mutant able produce accumulated high yields moreover effect flanking linker regions domain swapping evaluated found retention linker regions critical processivity hybrid pkss subsequently high yield production obtained overexpressing scnd gene partner scnf disrupting scnd gene respectively knowledge first report elimination polyketide undesired metabolite along overproduction desired product improving catalytic efficiency domain using domain swapping technology
aim study determine relationship oxidative reductive metabolic pathways acrylamide nonsmoking general population first time blood protein adducts urinary metabolites glycidamide quantified especially designed study group even distribution age gender hemoglobin adducts carbamoylethylvaline aaval hydroxy carbamoylethylvaline gaval detected blood samples median levels pmol globin respectively concentrations ranged pmol globin aaval pmol globin gaval ratio gaval aaval median urinary metabolites determined urine samples examined acetyl carbamoylethyl cysteine aama levels acetyl carbamoyl hydroxyethyl cysteine gama levels lod concentrations ranged lod median aama lod median gama ratio gama aama varied median using hemoglobin adduct levels blood mercapturic acid excretion urine calculation daily intake gave practically identical values median daily intakes body weight day using adducts lod day using mercapturic acids calculations children take approximately times per kilogram body weight adults ratio gama aama significantly higher group young children years median level gender related difference internal exposure metabolism observed
background aloe vera used traditionally topical treatment wounds burns different countries centuries mechanism effect well understood various growth factors implicated process wound healing among different growth factors involved process tgf beta bfgf importantly expressed fibroblast cells aim study evaluate effect expression angiogenesis growth factors mouse embryonic fibroblast cells methods exposed mouse embryonic fibroblast cells different concentrations two different time fibroblast cell without treatment serves control expression tgf beta bfgf measured real time polymerase chain reaction real time pcr enzyme linked immunosorbent assay elisa level gene protein results observed gel first regulated expression tgf beta bfgf genes later repressed particular time conclusion results demonstrated dose dependent time dependent expression bfgf tgfb fibroblast cell vitro mechanism employed prospective treatment physical lesion elsevier masson sas rights reserved
galectins family non classically secreted beta galactoside binding proteins recently received considerable attention spatio temporal regulation surface signal lattice organization membrane dynamics cell adhesion disease therapeutics galectin unique member family two non homologous carbohydrate recognition domains joined linker peptide sequence variable lengths generating isoforms distinct properties functions physiological pathological settings development immune reaction neoplastic transformations metastasis review summarize latest knowledge structure receptors cellular targets trafficking pathways functional properties galectin discuss galectin mediated signalling cascades exploited cancers immunotherapies
xyloglucan endotransglycosylase xet catalyses transglycosylation xyloglucan major hemicellulose polymer thought mediate cross linking cellulose microfibrils cellular walls proposed involved control cell wall relaxation understand relationship litchi fruit cracking gene expression patterns three xet genes litchi fruit identified examined expression profiles pericarp aril tissues different development stages using cracking resistant cultivar huaizhi cracking susceptible cultivar nuomici three full length cdnas encoding xets named lcxet lcxet lcxet respectively isolated expanding fruit using pcr race pcr rapid amplification cdna ends methods northern blotting analysis showed lcxet mrna accumulation occurred much earlier aril tissues days anthesis daa pericarp tissues daa nuomici however appeared almost time daa pericarp aril tissues huaizhi suggested differential accumulation lcxet pericarp aril tissues nuomici huaizhi closely associated fruit cracking lcxet mrna accumulation could detected pericarp aril tissues throughout fruit development exhibited differential accumulation pattern pericarp aril tissues aril nuomici intensive signal bands detectable daa rapidly expanding fruits nuomici weak bands could found pericarp tissues contrast moderate signal bands detectable pericarp aril tissues huaizhi fruits furthermore lexet showed constitutive expression pericarp aril tissues developing nuomici huaizhi litchi fruit addition differential expression patterns three xets genes observed different tissues litchi lcxet fruit specific address role lcxet fruit cracking alpha naphthalene acetic acid naa used treat nuomoci reduce fruit cracking enhanced lcxet mrna accumulation appeared pericarp lcxet lexet mrnta accumulation enhanced aril tissues naa treated fruits thus lcxet likely play role reducing litchi fruit cracking lcxet lcxet elsevier masson sas rights reserved
crispr cas nuclease becoming major tool targeted mutagenesis eukaryotes inducing double strand breaks dsbs pre selected genomic sites repaired non homologous end joining nhej error prone way plants could demonstrated cas nuclease able induce heritable mutations arabidopsis thaliana rice gene targeting homologous recombination also induced dsbs using natural nuclease marker genes previously developed planta strategy targeting vector targeting locus activated simultaneously via dsb induction plant development demonstrate strategy used natural genes crispr cas mediated dsb induction able integrate resistance cassette adh locus thaliana via heritable events identified using pcr based genotyping approach characterised southern blotting confirmed sequence level major concern specificity crispr cas nucleases target effects might avoided using two adjacent sgrna target sequences guide cas nickase two dna strands resulting formation dsb amplicon deep sequencing demonstrate cas paired nickase strategy mutagenic potential comparable nuclease resulting mutations mostly deletions also demonstrate stable inheritance mutations thaliana
allogenic lymphocyte immunotherapy lit treatment unexplained recurrent spontaneous abortion ursa still controversial due lack enough controls evaluate effectiveness eighteen randomized placebo controlled trials lit ursa included meta analysis live birth rates group extracted overall odds ratio lit calculated success rate treatment group significantly higher similar lit performed pregnancy dramatically improved live birth rate women ursa similar overall similar supports low dose lymphocytes treating ursa results indicate lit provides significantly beneficial effect placebo ursa lit given pregnancy superior lit given pregnancy lower doses per treatment less lymphocytes peripheral blood achieved better outcome
human papillomavirus hpv causes invasive cervical cancers icc worldwide interaction hpv genetic diversity host genetics target tissue largely determine chances trigger carcinogenesis analyzed differential prevalence viral variants hpv monoinfected squamous scc glandular adc mixed adsc iccs four continents assessing contribution geographical origin cancer histology quantified contribution viral variants cancer histology differences age tumor diagnosis model fitted data explained total variance largest explanatory factors differential abundance among hpv variants interaction cancer histology geography hpv variants prevalent scc hpv variants increased glandular iccs confirm non random geographical structure viral variants distribution adcs diagnosed younger ages sccs independently viral variant triggering carcinogenesis hpv variants differentially associated histological iccs types adcs systematically diagnosed younger women results implications implementation cervical cancer screening algorithms ensure proper early detection elusive adcs
cxcr using hiv previously shown replicate efficiently healthy donor derived cell subset stimulation interleukin identified cellular genes expressed higher level stimulated subset one genes rnf trac involved regulation hiv replication cell lines also peripheral blood mononuclear cells rnfi trac bears ring finger domain important ubiquitin protein ligase mutations domain rnfl trac led loss hiv modulatory activity suggesting ligase activity necessary addition results northern blotting reporter gene analysis indicated rnfl trac function occurs viral transcription step results suggest rnfi trac could function recruit host factor controlling hiv transcription ubiquitin proteasome pathway elsevier inc rights reserved
long term effect feeding catecholamine analog ractopamine rac ractopamine hydrochloride elanco animal health indianapolis expression genes involved energy lipid metabolism subcutaneous adipose tissue studied large white pigs fed corn soybean meal based diets supplemented rac expression mrna abundance adipose tissue sterol regulatory binding protein srebp ppar alpha ppar gamma fatty acid synthase fas glucose transporter glut stearoyl coa desaturase determined northern blotting feed intakes differ rac improved gain increased loin eye area measured expression srebp ppar gamma declined rac whereas expression ppar alpha increased expression fas glut decreased rac whereas rac concentrations attenuated fas expression overall adipose tissue stearoyl coa desaturase expression affected rac showed somewhat less expression rac although prolonged chronic rac feeding likely downregulates adipose tissue membrane beta adrenergic receptors mrna abundances anabolic lipid metabolism transcription factors glucose transporters enzymes srebp ppar gamma fas glut still attenuated conversely transcription factor related oxidative metabolism expression ppar alpha enhanced conclude even rac still decreased expression lipogenic genes adipose tissue yet undefined cyclic adenosine monophosphate directed mechanisms contemporary lean pigs effect likely limited practical significance
background recent epidemiologic studies revealed significant association periodontitis oral squamous cell carcinoma oscc furthermore periodontitis markedly associated orodigestive cancer mortality whereas porphyromonas gingivalis infection identified specific potentially independent microbial factor related increased risk orodigestive cancer death authors previously reported induced precursor form matrix metalloproteinase prommp production via proteinase activated receptor par related pathways prommp activated gingipains enhance cellular invasion sas cells present study effects selected polyphenols inhibitors cellular invasion caused gingipains sas cells examined methods oscc cells infected strains including gingipain mutants evaluate effects inhibitors apple polyphenol hop bract polyphenol hbp high molecular weight fractions hbp hmw hbp low molecular weight fractions hbp lmw hbp epigallocatechin gallate egcg kyt arg gingipain inhibitor kyt lys gingipain inhibitor combination used par par mrna expressions examined using real time reverse transcription polymerase chain reaction signaling pathways evaluated western blotting analysis results kyt kyt hbp hmw hbp significantly inhibited par par mrna expressions prommp activation cellular invasion furthermore hbp hmw hbp reduced activation heat shock protein ets nuclear translocation nuclear factor kappa whereas egcg lmw hbp conclusion results suggest hbp hmw hbp potent inhibitors prommp activation cellular invasion mediated oscc cells
performance commercial real time pcr assay compared traditional bacterial culture identification streptococcus uberis staphylococcus aureus bovine milk collected different stages lactation initial validation tests using fresh frozen quarter milk samples identified factors affected success pcr therefore standard protocol adjusted samples collected first milking postpartum colostrum clinical mastitis cases adjustment involved pcr testing undiluted diluted sterile water dna extracts performance comparison culture pcb assay used milk samples collected aseptically individual quarters mixed age spring calving dairy cows early mid late lactation bacterial culture results used select subset samples testing represented quarters current prior strep uberis staph aureus infection compared culture pcr sensitivity specificity detecting strep uberis kappa respectively detecting staph aureus kappa dilution dna extracts colostrum clinical samples increased relative sensitivity strep uberis detection staph aureus presumably diluting unidentified pcr inhibitors sensitivity detecting strep uberis using pcr relative culture similar throughout lactation whereas relative specificity lowest immediately postcalving improved mid late lactation specificity estimates samples collected early lactation optimized reducing cutoff cycle threshold value recommended value although using value improved specificity reduced test sensitivity pcr assay lacked agreement culture early lactation specifically diagnosing strep uberis thus pcb used tool diagnosing mastitis early lactation
decade passed since optics genetics came together lead emerging technologies optogenetics advent light sensitive opsins made possible optically trigger neurons activation inhibition using visible light importance spatiotemporally isolating segment neural network controlling nervous signaling precise manner driven neuroscience researchers engineers invest great efforts designing high precision vivo implantable devices efforts focused delivery sufficient power deep brain regions monitoring neural activity high resolution fidelity review report progress made field hybrid optoelectronic neural interfaces combine optical stimulation electrophysiological recordings different approaches incorporate optical electrical components implantable devices discussed detail advantages various different designs well practical fundamental limitations summarized illuminate future neurotechnology development
mammalian evolution occurred presence mutualistic commensal pathogenic micro macro organisms millennia presence organisms mammalian evolution allowed intimate crosstalk colonizing species host immune system review introduce concept multibiome holistically refer biodiverse collection bacteria viruses fungi multicellular helminthic worms colonizing mammalian intestine furthermore discuss new insights multibiome host interactions context host protective immunity immune mediated diseases including inflammatory bowel disease multiple sclerosis finally provide reasons account multibiome experimental design analysis therapeutic applications authors published elsevier open access article license http creativecommons org licenses
permethrin pyrethroid insecticide widely used agriculture public health suggested permethrin may interact chemicals used military deployments result potential cause gulf war related illness determine causal relationship permethrin human health effects basic enzymatic pathway permethrin metabolism humans understood present study report trans permethrin metabolized human liver fractions producing phenoxybenzyl alcohol pboh phenoxybenzoic acid pbcooh identified human alcohol adh aldehyde dehydrogenases aldh enzymes involved oxidation phenoxybenzyl alcohol permethrin hydrolysis product phenoxybenzoic acid way phenoxybenzaldehyde pbcho cis permethrin significantly metabolized human liver fractions cytochrome isoforms involved either hydrolysis trans permethrin oxidation pboh pbcooh purified adh isozymes oxidized pboh pbcho pboh preferred substrate ethyl alcohol purified aldh responsible pbcho oxidation pbcooh similar substrate affinity previously known substrate bcnzyl alcohol based observations appears pboh oxidized pbcho adh subsequently pbcooh aldh although pbcho accumulate microsomal incubation order analyze permethrin metabolites previous hplc methods validated modified resulting refined hplc method described detail elsevier science usa rights reserved
somatic embryogenesis important biotechnological tool breeding conservation programmes woody species exists increasing interest improvement somatic embryogenesis induction commercial species pinus radiata one approach obtain markers successful somatic embryogenesis study protein profiling descriptive study order accomplish objective maldi tof tof analysis used identification quantification proteins pinus radiata somatic embryos derived cell lines generated different environmental conditions initiation stage based swiss prot database among proteins detected appeared cell lines low initiation percentage initial stage somatic embryogenesis two proteins detected differentially cell lines high initiation rates approximately proteins identified related carbohydrate metabolic process defence response study gives new insights proteomics forest trees well provides clues underlying causes mechanisms governing pinus radiata somatic embryogenesis process serve tool facing improvement ofthe breeding programmes
key assays enzymology biochemical characterization proteins vitro necessitate high concentrations purified protein interest protein purification protocols combine efficiency simplicity cost effectiveness describe gst method new small scale affinity purification system recombinant proteins based terminal glutathione sepharose tag gst terminal xhis tag fused protein interest latter construct used generate baculoviruses infection infected cells protein expression gst rather long tag kda serves ensure purification efficiency however might influence physiological properties protein hence subsequently cleaved protein using prescission enzyme order ensure maximum purity remove cleaved gst added second affinity purification step based comparatively small histag importantly technique based two different tags flanking two ends protein efficient tool remove degraded proteins therefore enriches full length proteins method presented require expensive instrumental setup fplc additionally incorporated mgcl atp washes remove heat shock protein impurities nuclease treatment abolish contaminating nucleic acids summary combination two different tags flanking terminal capability cleave one tags guaranties recovery highly purified full length protein interest
glycinebetaine plays important role protection mechanism many plants various stress conditions study genetically engineered maize plants enhanced ability synthesise glycinebetaine produced introducing two genes glycine sarcosine methyltransferase gene apgsmt dimethylglycine methyltransferase gene apdmt bacterium aphanothece halophytica southern blotting pcr analysis demonstrated two genes integrated maize genome expressed increased expression levels apgsmt apdmt drought conditions facilitated accumulation leaves transgenic maize plants conferred improved drought tolerance drought conditions transgenic plants showed increased accumulation sugars free amino acids greater chlorophyll content higher photosynthesis rate biomass lower malondialdehyde electrolyte leakage compared wild type results suggest provides vital protection drought stress normal conditions transgenic plants show decreased biomass productivity indicated expression apgsmt apdmt maize plays important role tolerance drought stress lead detrimental effects concluded expression apgsmt apdmt maize effective approach enhancing abiotic stress tolerance maize breeding programmes
agrobacterium mediated genetic transformation system entomopathogenic fungus nomuraea rileyi established three binary dna vectors ppzp hph ppzp hph rnai ppzp hph dsred constructed trpc promoter aspergillus nidulans used cis regulatory element drive expression hygromycin phosphotransferase hph gene dsred conferred hygromycin hyg resistance red fluorescence visualization respectively blastospores conidia used recipients blastospores transformation efficiency reached similar transformants per blastospores whereas conidia transformed based analysis five generations subcultures pcr southern blotting assays ptrpc hph cassette integrated genomes transformants contained single copy hph gene showed mitotic stability abundant altered morphologic phenotypes colonies blastospores hyphae formations observed arbitrary insertional mutants rileyi made possible study relationships functions interrupted genes whole genome transformation protocol promote functional characterization genes construction genetically engineered strains important entomopathogenic fungus potentially similar fungal pathogens elsevier inc rights reserved
article overview current research area sulfate activation emphasis placed presenting unresolved issues appropriate context critical evaluation reader energetics sulfate activation reevaluated light recent findings demonstrate synthesis activated sulfate thermodynamically driven gtp hydrolysis structural functional bases gtpase activation discussed detail bonding hydrolysis high energy phosphoric sulfuric acid anhydride bond activated sulfate presented along analysis importance divalent cation pyrophosphate protonation equilibria governing activated sulfate formation molecular genetics sulfate assimilation prokaryotes reviewed emphasis regulation pathway recent discoveries connecting sulfate activation plant microbe symbiogenesis presented several examples importance activated sulfate human metabolism disease
background embryogenesis tight regulation retinoic acid availability fundamental normal development parallel synthesis negative feedback loop controlled catabolizing enzymes cytochrome subfamily cyp crucial vertebrates functions three cyp enzymes cypa cypb cypc well characterized contrast outside vertebrates little known cyp complements biological roles effort characterize evolutionary diversification catabolism studied cyp genes cephalochordate amphioxus branchiostoma lanceolatum basal chordate vertebrate like genome undergone massive large scale duplications vertebrates results present study found amphioxus also possess three cyp genes cyp cyp cyp clustered genome originated lineage specific duplication amphioxus cyp cluster thus represents useful model assess adaptive evolutionary changes signaling system following gene duplication characterization amphioxus cyp expression function regulation signaling demonstrated despite independent origins cyp duplicates amphioxus vertebrates convergently assume two main roles development dependent patterning protection fluctuations levels analysis suggested amphioxus dependent patterning sustained cyp homeostasis mediated cyp cyp furthermore comparisons regulatory regions cyp genes different bilaterian animals indicated cyp driven negative feedback system present last common ancestor deuterostomes bilaterians conclusions altogether work reveals evolutionary origins dependent regulation cyp genes highlights convergent functions cyp enzymes originated independent duplication events hence establishing novel selective mechanism genomic retention gene duplicates
background shwachman diamond syndrome sds autosomal recessive ribosomopathy caused mainly compound heterozygous mutations sbds structural variation involving sbds locus rarely reported association disease aimed determine whether contributed pathogenesis case lacking biallelic sbds point mutations case presentation whole exome sequencing performed patient sds lacking biallelic sbds point mutations array comparative genomic hybridization southern blotting used seek svs across sbds locus locus specific polymerase chain reaction pcr encompassing flanking intronic sequence also performed investigate mutation within locus rna expression western blotting performed analyze allele protein expression found child harbored single missense mutation sbds inherited mother sbds locus inherited father missense allele segregated accordance mendelian expectations autosomal recessive sds complementary dna western blotting analysis locus specific pcr support contention perturbed sbds protein expression father child conclusion findings implicate genomic rearrangements pathogenesis cases sds support patients lacking biallelic sbds point mutations tested within sbds locus
telomere ribonucleoprotein structure protects chromosomal ends aberrant fusion degradation telomere length maintained telomerase alternative pathway known alternative lengthening telomeres alt recently elegans emerged multicellular model organism study telomere alt visualization repetitive sequences genome critical understanding biology telomeres telomere length measured telomere restriction fragment assay quantitative pcr methods provide averaged telomere length contrary fluorescence situ hybridization fish provide information individual telomeres cells provide protocols representative results method determine telomere length elegans fluorescent situ hybridization method provides simple powerful situ procedure cause noticeable damage morphology using fluorescently labeled peptide nucleic acid pna digoxigenin dutp labeled probe able visualize two different repetitive sequences telomere repeats template alt talt elegans embryos gonads
worldwide increase carbapenem resistance transferable carbapenemases significant challenges treatment pseudomonas aeruginosa infections study investigation carbapenemase production carbapenem resistant aeruginosa isolates recovered clinical specimens tertiary hospital aimed total carbapenem resistant aeruginosa isolates examined carbapenem inactivation method cim used phenotypic detection carbapenemase production existence bla kpc bla ndm bla imp bla vim bla oxa bla ges genes investigated polymerase chain reaction pcr subtypes detected genes identified sequence analysis arbitrarily primed pcr pcr performed evaluate clonal relationship among isolates presence high risk clones carbapenemase producers investigated matrix assisted laser desorption ionizationtime flight mass spectrometry maldi tof three isolates identified carbapenemase producers cim tests pcr tests demonstrated three isolates carrying carbapenemase genes well bla vim gene found two isolates bla ges gene found one isolate sequence analysis demonstrated carbapenemases vim vim ges pcr yielded high clonal diversity among isolates according maldi tof analysis none carbapenemase producing strains belonged high risk clones conclusion presence vim vim ges type carbapenemases aeruginosa isolates demonstrated first time hospital ges reported second time turkey results lead strategies controlling spread carbapenemases contribute epidemiological data turkey
gold nanoparticles proven promising decentralized nucleic acid testing virtue simple visual readout absorbance based quantification major challenge toward practical application achieve ultrasensitive detection without compromising simplicity conventional strategy thermocycling amplification unfavorable instrumentation preparation thermostable oligonucleotide modified gold nanoparticle probes herein basis previously unreported precipitation phenomenon thiolated poly ethylene glycol mercaptoundecanoic acid modified gold nanoparticles magnesium pyrophosphate crystals isothermal dna amplification reaction byproduct new ultrasensitive simple dna assay platform developed binding mechanism underlying precipitation phenomenon found caused complexation carboxyl pyrophosphate free magnesium ions remarkably poly ethylene glycol hinder binding effectively stabilizes gold nanoparticles magnesium ion induced aggregation without pyrophosphate fact similar phenomenon observed poly ethylene glycol carboxyl containing nanomaterials gold nanoparticle probe incorporated loop mediated isothermal amplification reaction remains red dispersion negative sample absence target dna sequence appears red precipitate positive sample presence target results first kind gold nanoparticle based dna assay platform isothermal amplification real time monitoring capabilities
zinc finger nuclease zfn transcription activator like effector nuclease talen clustered regularly interspaced short palindromic repeats crispr associated protein crispr cas commonly used genome editing tools previous studies demonstrated hypothermia treatment increased mutation rates induced zfns talens mammalian cells characterize effect different culture temperatures crispr cas mediated genome editing find genome editing efficiency crispr cas significantly hampered hypothermia treatment unlike zfn talen addition hyperthermia culture condition enhances genome editing crispr cas cell lines due higher enzyme activity sgrna expression level higher temperature study implications crispr cas applications broad spectrum species many live degrees copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
explore effects bufalin inhibiting proliferation regulating methylation wilm tumor gene well possible mechanisms human erythroid leukemic hel cells hel cells treated bufalin various concentrations observe cellular morphology proliferation assay cell cycle mrna protein expression levels detected reverse transcription polymerase chain reaction pcr western blot immunocytochemistry dna methylation protein expression levels dna methyltransferase dnmta dnmtb analyzed methylation specific pcr western blot respectively bufalin effective inhibit proliferation hel cells dose dependent manner suppression rates half maximal inhibit concentration mol typical apoptosis morphology observed bufalin treated hel cells proliferation index cell cycle decreased expression levels mrna protein reduced gradually increasing doses bufalin meanwhile methylation status gene changed unmethylated partially totally methylated expression levels dnmta dnmtb protein gradually increased bufalin treatment dose dependent manner bufalin significantly inhibit proliferation hel cells arrest cell cycle phase also induce cellular apoptosis regulate expression level results provide evidence bufalin anti leukemia mechanism may involve increasing methylation status related regulation dnmta dnmtb proteins erythroid leukemic hel cells
genomic dna dynamically associated protein factors folded form chromatin fibers dimensional configuration chromatin enable distal genetic elements come close proximity allowing transcriptional regulation noncoding rna mediate structure chromatin chromatin interaction analysis paired end tag sequencing chia pet valuable powerful technique molecular biology allows study unbiased genome wide novo chromatin interactions paired end tags describe standard version chia pet multiplex chia pet version
novel lyase activity enzyme characterized first time hmg coa lyase like chl close homolog mitochondrial hmg coa lyase mhl initial data show nine mature transcripts novel gene hmgcll although none exons abundant transcript called variant lacks exons moreover three dimensional model novel enzyme proposed colocalization studies show dual location chl endoplasmic reticulum cytosol mitochondria peroxisomes furthermore dissociation experiment suggests nonendoplasmic reticulum integral membrane protein kinetic parameters chl indicate lower max higher substrate affinity mhl protein expression lyase activity found several tissues particularly strong lung kidney occurrence chl brain surprising mhl found although mhl activity clearly associated energy metabolism results suggest chl closely related another metabolic function mostly pulmonary brain level arnedo menao puisac teresa rodrigo gil rodriguez lopez vinas gomez puertas casals casale hegardt pie characterization novel hmg coa lyase enzyme dual location endoplasmic reticulum cytosol lipid res
microscope eukaryotic animal cells adopt variety different shapes sizes cells also move deform physical mechanisms driving movements shape changes important fundamental cell biology tissue mechanics well disease biology article reviews basic mechanical concepts cells emphasizing continuum mechanics description cytoskeletal networks hydrodynamic flows across cell membrane discuss cells generate movement shape changes controlling mass fluxes cell boundary mass fluxes come polymerization depolymerization actin cytoskeleton well osmotic hydraulic pressure driven flow water across cell membrane combining hydraulic pressure control force balance conditions cell surface discuss quantitative mechanism cell shape volume control broad consequences model cell mechanosensation tissue mechanics outlined
scrub typhus caused orientia tsutsugamushi common cause acute undifferentiated febrile illness asia pacific region however nonspecific clinical manifestation often prevents early diagnosis propose use pcr serologic tests diagnostic tools developed multiplex real time pcr assay using hydrolysis taqman probes targeting tsutsugamushi kda groel human interferon beta ifn beta gene genes improve early diagnosis scrub typhus amplification efficiency higher lower detection limit copies per reaction used human gene internal dna quality quantity control determine sensitivity pcr assay selected patients confirmed scrub typhus exhibited clear fold increase level igg igm pcr assay result positive patients indicating sensitivity confidence interval pcr assessment negative non scrub typhus patients indicating specificity addition test helped diagnose patients inconclusive immunofluorescence assay ifa results using single blood samples conclusion real time pcr assay proposed sensitive specific diagnosing scrub typhus combining pcr serologic tests improve diagnosis scrub typhus among patients presenting acute febrile illness
despite much debated well established immune system plays essential role fight cancer article highlight implication immune system control tumor growth describe major components immune system involved antitumoral immune response immune system exerting pressure tumor cells also play pro tumoral role sculpting immunogenicity tumors cells develop finally illustrate numerous mechanisms immune suppression take place within tumoral microenvironment allow tumor cells escape control immune system increasingly precise knowledge brakes effective antitumor immune response allows development immunotherapy strategies innovating promising hope published elsevier masson sas
beta galactosidase induced wild type rpsl mutant coli degrees heat shock samples subjected capillary electrophoresis based single enzyme molecule assays distribution populations catalytic rates electrophoretic mobilities determined populations found differ significantly respect properties consistent conformational differences molecules underlying basis enzyme heterogeneity samples also subjected partial thermal denaturation one population led decrease average activity decrease variance furthermore found electrophoretic mobility enzyme altered presence citrate buffer system likely due nonspecific binding
variants abca gene associated spectrum inherited retinal diseases irds prominently autosomal recessive stargardt disease stgd cone rod dystrophy clinical outcome large degree depends severity variants provide accurate prognosis select patients novel treatments functional significance assessment nontruncating abca variants important collected published abca variants retinal dystrophy cases leiden open variation database compared frequency caucasian ird cases non finnish european control individuals next presence protein truncating variants nontruncating variants significantly enriched patient cohort furthermore variants deemed benign assessing homozygous occurrence frequent variants ird cases based allele frequencies control individuals confirmed mild nature glyala glydel variant identified three additional mild variants alaval arggln glyglu variant predicted act mild variant cases based data silico analyses american college medical genetics genomics guidelines provide pathogenicity classifications five tier scale benign pathogenic variants abca lovd database wiley periodicals inc
genetic differentiation among populations european abalone haliotis tuberculata investigated using different markers better understand evolutionary history exchanges populations three markers used mitochondrial cytochrome oxidase coi sperm lysin nuclear gene eight nuclear microsatellites markers present different characteristics concerning mutation rate inheritance provided complementary information abalone history gene diversity genetic diversity relationships among subspecies calculated sample approximately individuals collected different locations north eastern atlantic ocean macaronesia mediterranean sea coi marker used explore phylogeny species network analysis two phylogenetic methods analysis revealed major haplotypes grouped two distinct clades pairwise sequence divergence clades correspond subspecies revealed many contacts along atlantic coast pleistocene interglaciations sperm lysin gene analysis separated two different subtaxa one associated macaronesian islands populations moreover small population northern subtaxon isolated adriatic seaprobably separation two lineages evolved independently microsatellites analyzed different genetics methods including bayesian clustering method migration patterns analysis revealed genetically distinct microsatellite patterns among populations mediterranean sea brittany normandy morocco canary balearic islands gene flow asymmetric among regions azores canary islands particularly isolated low effective population sizes results support hypothesis climate changes since pleistocene glaciations played major role geographic distribution european abalone traces events related maternal inheritance shown coi marker
peripartum cardiomyopathy heart failure syndrome occurring late pregnancy early post natal period pathophysiology peripartum cardiomyopathy fully understood various mechanisms postulated including underlying inflammatory process report four cases presenting acute left ventricular systolic dysfunction three four patients presented left ventricular ejection fraction one left ventricular ejection fraction made full clinical recovery following treatment high dose intravenous steroids case series adds growing body evidence role immunosuppressants management peripartum cardiomyopathy
overcome low efficiency agronomic protection maize dwarf mosaic disease susceptible maize inbred line transformed agrobacterium tumefaciens harboring hprna expression vectors containing inverted repeat sequences different lengths targeting coat protein gene maize dwarf mosaic virus mdmv pcr screening southern blotting flanking sequences integration sites amplified thermal asymmetric interlaced pcr tail pcr used analysis dna integration patterns plant lines evaluated mdmv resistance field inoculation trials two environments nineteen plant lines positive southern blotting six evaluated resistant mdmv four resistance non significantly different highly resistant control resistance eleven proved significantly improved compared non transformed parent line improvements mdmv resistance verified relative amount virus gene expression measured quantitative real time pcr comparing results southern blotting tail pcr analysis different integration patterns one two copies inverted repeat sequences identified non repetitive repetitive sequences maize genome mdmv resistance mediated rna interference relative length inverted repeat sequence copy number dna integration repeatability integration sites longer hprna expression construct shows efficiency shorter one elsevier rights reserved
systemic lupus erythematosus sle autoimmune disorder complex genetic underpinnings review attempts assemble myriad genomic findings build clearer picture pathobiology sle serve guide therapeutics genes known sle several penetrant ones led emergence defined lupus phenotypes also discussed targeted therapies come horizon specific biologic mechanisms traditional therapies recently explored diagnostic toolbox enhanced addition new antibodies gene expression signatures mutation panels provides opportunity piece together lupus puzzle even revisit clinical classification sle
study describe complete mitochondrial genomes gyrodactylus brachymystacis gyrodactylus parvae infecting rainbow trout oncorhynchus mykiss invasive topmouth gudgeon pseudorasbora parva respectively two circular genomes common genome organization found gyrodactylus species comparative analyses mitochondrial genomes six gyrodactylus species carried determine base composition codon usage transfer rna ribosomal rna genes major non coding regions nucleotide diversity within genus also provide first universal models secondary structures rrns rrnl group thereby promoting utilization genetic markers universal primers provided herein used obtain mitochondrial information pathogen identification may reveal different levels molecular phylogenetic inferences lineage
review paper discusses perspective complex biological systems applied inheritance ontogeny focusing continuity genetic epigenetic transgenerational microbiotic inheritance informational processuality within continuity used exemplify insufficiency hierarchical concepts grasping complex integrated nature biological processes argument follows bruni giorgi progress biophysics molecular biology emphasizing structures substrates organized hierarchically communicational processes organized heterarchically essay also argues insufficiency single basic genetic level description prevalent idea twentieth century biology explain phenotypic variation argue inheritance development fully explained sub super ordination descriptions merely heuristic tools reflect nature processes
study presents first time sequences five beta keratin cdnas turtle epidermis obtained means rapid amplification cdna ends race analyses deduced amino acid sequences correspond distinct glycine proline serine tyrosine rich proteins containing amino acids situ hybridization shows beta keratin mrnas expressed cells differentiating beta layers shell scutes southern blotting analysis reveals turtle beta keratins belong well conserved multigene family result confirmed amplification sequencing genomic fragments corresponding beta keratin genes like snake crocodile avian beta keratin genes turtle beta keratins contain intron interrupts untranslated region length intron variable ranging one sequences obtained genomic amplifications corresponds one five sequences obtained cdna cloning thus sequences total turtle beta keratins determined present study predicted molecular weight different deduced proteins range kda predicted isoelectric point therefore neutral basic proteins central region rich proline beta strand conformation shows high conservation reptilian avian beta keratins likely involved polymerization glycine repeat regions often containing tyrosine localized toward terminus phylogenetic analysis shows turtle beta keratins similar crocodilian avian beta keratins lizards snakes
anaerobic ammonium oxidation anammox process recognized promising sewage treatment approach considering susceptibility meaningful study behaviors anammox bacteria unfavorable conditions found anammox bacteria probably tended aggregation regulation gmp unfavorable environmental stresses low temperature aerobic condition low using multiple protein sequence alignment systematically examined functionality thirteen genes encoding putative gmp metabolic enzymes anammox organism candidatus jettenia caeni revealing predicted enzymes predicted active particularly ectopic expression jcaa gene encoding protein ggdef domain eal domain suggested encoded functional enzyme capable synthesizing degrading gmp clearly confirmed vitro enzymatic assays reverse transcription polymerase chain reaction pcr furthermore catalytic mechanism simulated means three dimensional homology modeling molecular docking identification cdi gmp turnover role granulation anammox organism provides new perspective regulation aggregation capability promotion anammox performance application wastewater treatment process elsevier ltd rights reserved
diet induced obesity lead detrimental chronic disorders severity global epidemic encouraged ongoing research characterize mechanisms underlying obesity comorbidities recent evidence suggests saturated fatty acids sea high fat diets rapidly generate inflammation arcuate nucleus hypothalamus arc centrally regulates whole body energy homeostasis herein review roles hypothalamic neurons resident microglia initiation sfa induced hypothalamic inflammation particularly focus neuronal microglial free fatty acid sensing capacity produce inflammatory signaling also outline potential role peripherally derived monocytes inflammation finally explore synaptic plasticity mechanism hypothalamic inflammation modulate arc circuitry thus disrupt energy homeostasis elsevier ireland ltd rights reserved
oxidative stress closely involved neurodegenerative diseases present study aimed examine effect anti oxidant dhm dihydromyricetin nitropropionic acid induced behavioral deficits experimental rats striatal histopathological injury using behavioral imaging biochemistry histochemistry molecular biology technologies experimental results showed motor dysfunctions learning memory impairments induced significantly reduced dhm treatment induced striatal metabolic abnormality also remarkably improved dhm treatment showed increased glucose metabolism pet scan decreased mda malondialdehyde increased sod superoxide dismutase activity enzyme histochemical staining addition cell apoptosis evidently detected striatum group dhm group number apoptotic cells remarkably reduced treatment obviously induced regulation bcl regulations bax cleaved caspase changes significantly reversed dhm treatment present results suggested dhm showed protective effect anti oxidant anti apoptosis mechanisms
ubiquitin ligase nedd like neddl nedd binds regulates stability epithelial channel enac salt absorbing epithelia kidney lung tissues role distal colon also absorbs salt fluid expresses enac unknown using conditional knock approach knock neddl mice intestinal epithelium neddl vil cre ert show neddl depletion leads higher steady state short circuit current isc mouse distal colon tissue relative controls higher isc partially reduced addition apical amiloride strongly reduced basolateral bumetanide well depletion basolateral suggesting nkcc slca transporter enac targets neddl colon accordance nkcc enac protein abundance colon neddl knock animals increased indicating neddl normally suppresses proteins however observe immunoprecipitation neddl nkcc suggesting neddl indirectly suppresses nkcc expression low salt diet resulted strong increase enac mrna protein expression enac activity although salt restriction also increased nkcc protein mrna abundance lead elevated activity isc results identify nkcc novel target neddl mediated regulation vivo modulates ion fluid transport distal colon together enac
study examines expression insulin like growth factor type receptor tgf colorectal neoplasia previous studies shown igf expressed high levels normal embryonic stem cells many cancer phenotypes however lower igf levels expressed advanced cancer phenotypes timing reasons changes expression evolution cancer understood examine igf expression evolution colorectal cancer means northern blotting immunohistochemistry validated tissue reagent controls western blotting show first time normal colorectal crypts epithelial stem cells basal crypt region express high igf levels decrease low levels cells migrate differentiate mid upper crypt regions tumor initiation aberrant crypt foci transformed cells express high levels igf stem cell levels throughout crypt axis tumor progression adenomatous cancerous crypts tumor cells epithelial type morphology express high levels igf advanced cancers low levels igf expressed invasive foci cancer cells dedifferentiate mesenchymal type morphology show loss cell adhesion interestingly cells form alternating pattern mesenchymal type cells show cell adhesion high levels igf expression summary study shows high level igf expression colorectal neoplasia initiated abnormality stem cell programed differentiation aberrant crypt focus however low level igf expression found invasive cancers consequent cancer cell dedifferentiation mesenchymal type morphology loss cell adhesion crown copyright published elsevier inc rights reserved
raccoon dog nyctereutes procyonoides wide distribution europe prominent example highly adaptable alien species recorded sporadically denmark since observations since suggested species established free ranging self sustaining population elucidate origin genetic patterns danish raccoon dogs studied population genomics individuals collected denmark together reference captive individuals poland feral individuals different european localities germany poland estonia finland used novel genotyping sequencing approach simultaneously identifying genotyping large panel single nucleotide polymorphisms overall significant indication contemporary genetic structuring analysed raccoon dog populations least four different clusters spite existence long distance gene flow secondary admixture different population sources danish population characterized high level genetic admixture neighbouring feral european ancestries presence private clusters non retrieved feral captive populations sampled results suggested raccoon dog population denmark founded escapees genetically unidentified danish captive stocks followed recent admixture individuals migrating neighbouring germany
constructed ssh suppression subtractive hybridization library based two populations radopholus similis different host plants exhibiting differences pathogenicity musa paradisiaca anthurium andraeanum plants order screen clones significant expression differences ssh library total clones randomly selected reverse northern blotting performed clones clones showed significant expression differences sequencing clones distinct sequences clones obtained aligning distinct sequences non redundant nucleotide database ncbi found five sequences highly conserved eng two five sequences lengths base pairs employed perform race pcr race pcr respectively subsequently complete length eng obtained qpcr result showed expression eng population high pathogenicity host plants approximately times much expression eng population low pathogenicity host plants furthermore gene eng population also showed expression differences amongst four different development stages order eng relative expression abundance high low females juveniles males eggs used rnai test whether eng population responsible pathogenicity first rnai work eng rnai results showed eng expression positive correlation pathogenicity population longer rnai treatment less pathogenic nematode population non endogenous gfp dsrna significant influence expression eng pathogenicity similis population conclusion evidence indicated eng might crucial pathogenicity related gene similis
article summarises results years research palmitoylation acylation viral proteins post translational attachment fatty acids cysteine residues integral peripheral membrane proteins analysing viral proteins important characterise cellular pathogens also instrumental decipher palmitoylation machinery cells comprehensive review describes methods identify acylated proteins covers fundamental biochemistry palmitoylation location palmitoylation sites viral proteins fatty acid species found acylated proteins intracellular site palmitoylation enzymology reaction finally functional consequences palmitoylation discussed regarding binding proteins membranes membrane rafts entry enveloped viruses target cells spike mediated membrane fusion well assembly release virus particles infected cells topics described mainly palmitoylated proteins influenza virus proteins important pathogens causative agents aids severe acute respiratory syndrome model viruses discussed
cervical cancer strongly related certain high risk types human papilloma virus infection breast cancer metastasis suppressor brms tumor suppressor gene expression regulated dna promoter methylation several types cancers study aims evaluate methylation status brms promoter relation high risk types human papilloma virus infection development pre cancerous lesions describe pattern brms protein expression normal high risk types human papilloma virus infected pre cancerous malignant cervical epithelium compared methylation status brms cervical smears women infection high risk types human papilloma virus women proven high risk types human papilloma virus infection using real time methylation specific polymerase chain reaction expression brms protein described immunohistochemistry biopsies cervical cancer pre cancerous lesions normal cervices methylation brms promoter detected women high risk types human papilloma virus infection less frequent smears high risk types human papilloma virus women pathological histology cervical intraepithelial neoplasia methylation detected also hela cervical cancer cells immunohistochemistry revealed nuclear brms protein staining normal high risk types human papilloma virus free cervix cervical intraepithelial neoplasias malignant tissues staining occasionally also cytoplasmic cancer expression stronger differentiated cancer blasts conclusion brms promoter methylation aberrant protein expression seem related high risk types human papilloma virus induced carcinogenesis uterine cervix worthy investigation
introduction methadone buprenorphine maintenance replacement therapies opioid dependence also used pain management methadone buprenorphine lesser extent seen sharp increases mortality associated use distinct routes metabolism mostly cytochrome dependent distinct pharmacologic activity metabolites metabolism may play role differences toxicity areas covered article reviews peer reviewed literature obtained pubmed searches literature referenced within review considers first overview drug use mortality past decade provides extensive detail vitro vivo human metabolism methadone buprenorphine using human experimental animal studies presents pharmacodynamic activity parent drug metabolites opioid receptor glycoprotein substrates plasma brain concentration ratios activity herg channel lessons learned drug interaction studies humans examined attempt bring together combined information expert opinion use misuse drugs contributes epidemic opioid associated mortalities better understanding metabolism transport medication induced changes contribute safer use
among food related health issues presence contaminants prominent role due wide range exogenous compounds occur food commodities large differences structure biological activity comprehensive assessment related risk thus actually demanding terms time facilities involved context use computational strategies effective choice supporting hazard identification procedure early stage work focused food contaminant zearalenone comparing trans cis isomers respectively well known mycoestrogen still largely understudied isomer estimated possible effects exerted human metabolism xenoestrogenicity cis zen using validated silica strategy based docking simulations rescoring procedures similarly exploitation promising enzymatic detoxifying routes designed trans zen relies enzyme lactono hydrolase clonostachys rosea assessed cis isomer well results showed isomers act functional analogues respect xenoestrogenic activity several cis zen metabolites high biological potential identified contrary spite high degree structural analogy cis isomer showed pattern interaction degrading enzyme stark contrast observed trans zen reasons outcomes presented herein strongly support inclusion cis zen studies occurrence metabolism bioactivity assessment suggest need dedicated handling cis isomer risk assessment studies elsevier ltd rights reserved
iii iii utilized absorption spectroscopic probes investigate interaction biomolecules like lysozyme hew vitro abundant metal ion human body system spectroscopic techniques involving comparative absorption absorption difference quantitative intensity analysis using transitions utilized changes inner sphere coordination pattern iii iii solution well solid state present study deals important biomolecule human metabolism lysozyme hew absorption spectral parameters oscillator strength judd ofelt lambda intensity parameters slater condon inter electronic parameters calculated using chi square methods obtained results used determine probable geometry complex solution nature bond iii iii lysozyme inner sphere coordination environment transitions results obtained various experimental conditions utilized investigate coordination changes iii iii complexes caused different coordinating sites lysozyme normalized bite denticity solvent nature coordination number nature bond parameters mimic interaction ion biomolecule
colorectal cancers exhibit high telomerase activity usually correlated hypermethylation promoter htert catalytic subunit although telomerase expressed normal tissue certain proliferative somatic cells intestinal crypt cells demonstrated telomerase activity aim study determine whether correlation exists telomerase activity levels htert methylation telomere length tumoral normal colorectal tissues tumor transitional normal tissues obtained patients colorectal cancer bisulfite modification genomic dna htert promoter methylation analyzed methylation sensitive single strand conformation analysis ssca telomerase activity telomere length measured fluorescent telomeric repeat amplification protocol assay southern blotting respectively significant increase htert methylation telomerase activity reduction mean telomere length observed tumor tissues compared transitional normal mucosa transitional normal mucosa telomerase activity significantly lower tumor tissues even high levels htert methylation nevertheless htert promoter methylation linearly correlated telomerase activity data indicate htert promoter methylation necessary event htert expression telomerase activity however methylation sufficient htert activation particularly normal colorectal cells
neurons highly differentiated cells responsible conduction transmission information nervous system proper function neuron relies compartmentalization intracellular domains differentiated neuroblastoma cells extensively used study understand physiology cell biology neuronal cells show differentiation neuroblastoma cells pronounced upon exposure chemical analog cyclic amp camp camp next analysed expression key microtubule regulating proteins differentiated cells expression activation key camp players epac pka akap microtubule promoting factors regulated differentiation cells microtubule destabilizing proteins regulated observed increase tubulin post translational modifications related microtubule stability expected camp increased pka epac dependent signalling consistently pharmacological modulation epac activity instructed cell differentiation number neurites neurite length cells moreover disruption pka akap interaction reduced morphometric parameters interestingly pka epac act synergistically induce neuronal differentiation altogether results show changes observed differentiation cells proceed regulating several microtubule stabilizing factors acquisition neuronal phenotype process involving concerted although independent functions epac pka
due poor drug candidate safety profiles arc often identified late drug development process clinical progression new chemical entities pharmaceuticals remains hindered thus resulting high cost drug discovery accelerate identification safer drug candidates improve clinical progression drug candidates pharmaceuticals important develop high throughput tools provide early stage predictive toxicology data particular vitro cell based systems accurately mimic human vivo response predict impact drug candidates human toxicology needed accelerate assessment drug candidate toxicity human metabolism earlier drug development process vitro techniques provide high degree human toxicity prediction perhaps important cosmetic chemical industries europe animal toxicity testing phased entirely immediate future developed metabolic enzyme microarray metabolizing enzyme toxicology assay chip metachip miniaturized three dimensional cell culture array data analysis toxicology assay chip datachip high throughput toxicity screening target compounds metabolic enzyme generated products human rat metachip contains array encapsulated metabolic enzymes designed emulate metabolic reactions human rat liver human rat datachip contains array human rat cells encapsulated alginate gels cell based toxicity screening combining datachip complementary metachip vitro toxicity results obtained correlate well vivo rat data
backgroundhla products class human leukocyte antigens act immunology human reproduction modulators maternal immune system pregnancy aimsto evaluate hla role establishment viable pregnancy materials methodshla genotyped sequence based typing sbt analyzed specific polymorphisms comparing couples underwent assisted reproduction treatment art fertile control couples resultsthere significant difference hla allele genotype distributions art couples control couples allele hla observed art men fertile men conclusionthese results suggest hla allelic variants may play role modulation immune responses context inability natural conception establishment viable pregnancy
wolf hirschhorn syndrome whs neurodevelopmental disorder characterized mental retardation craniofacial malformation defects skeletal heart development syndrome associated irregularities short arm chromosome including deletions varying sizes microduplications many genotypic aberrations humans correlated classic whs phenotype animal models provided context mapping genetic irregularities specific phenotypes however remains significant knowledge gap concerning cell biological mechanisms underlying phenotypes review summarizes literature made recent contributions topic drawing vast body knowledge detailing genetic particularities disorder limited pool information cell biology finally propose novel characterization whs pathophysiology owing part defects neural crest cell motility migration development
dgat enzymes acyl coa diacylglycerol acyltransferase catalyse formation triacylglycerols tags abundant lipids vegetable oils thorough understanding enzymology oil accumulation critical goal modifying oilseeds improved vegetable oil production four isoforms bndgat final rate limiting step triacylglycerol synthesis characterized brassica napus one world important oilseed crops transcriptional profiling developing napus seeds indicated two genes bndgat bndgat high expression two bndgat bndgat low expression activities bndgat isozyme characterized following expression strain yeast deficient tag synthesis tag napus seeds contain palmitic acid position surprising four bndgat isozymes exhibited strong fold specificity oleic acid acyl coa substrate however ratio coa coa napus seeds peak period tag synthesis substrate selectivity assays conducted coa coa ratio four isozymes incorporated amounts fold higher strong sensitivity bndgat isozymes relative concentrations acyl coa substrates substantially explains observed fatty acid composition napus seed oil understanding enzymes critical triacylglycerol synthesis facilitate genetic biotechnological manipulations improve oilseed crop
objective evaluate transepithelial transport sodium glucose potassium water mrna level sodium glucose cotransporter sglt facilitated sugar transporter glut small intestine iron deficient rats methods receiving diets low normal iron content rats wistar epm subjected two experiments evaluation transepithelial transport sodium glucose potassium water vivo experimental model intestinal perfusion determination relative sglt glut mrna levels proximal intermediate distal portions small intestine northern blotting technique results hemoglobin hepatic iron levels statistically lower anemic rats mean transepithelial transports sodium min glucose min water min small intestine anemic rats significantly lower control group min min min respectively transepithelial transport potassium similar groups relative sglt mrna levels anemic rats intermediate distal segments significantly higher values control rats intermediate distal significant difference observed relative slgt mrna levels proximal segment glut mrna levels segments conclusion iron deficiency decreases absorption glucose sodium water increases sglt mrna intermediate distal segments small intestine rats elsevier inc rights reserved
background mucopolysaccharidosis also known hunter syndrome rare linked disease caused deficiency lysosomal enzyme iduronate sulfatase catalyses step catabolism glycosaminoglycans glycosaminoglycans accumulate within tissues affecting multiple organs physiologic systems clinical manifestations include neurologic involvement severe airways obstruction skeletal deformities cardiomyopathy disease variable age onset variable rate progression severe disease death usually occurs second decade life whereas individuals less severe disease may survive adulthood enzyme replacement therapy intravenous infusions idursulfase emerged new treatment mucopolysaccharidosis type update previously published version review objectives evaluate effectiveness safety enzyme replacement therapy idursulfase compared interventions placebo intervention treating mucopolysaccharidosis type search methods searched cochrane cystic fibrosis genetic disorders group trials register date last search november also searched embase pubmed literature latino americana caribe ciencias saude lilacs date last search november selection criteria randomised quasi randomised controlled trials enzyme replacement therapy idursulfase compared intervention placebo options behavioral strategies transplantation data collection analysis two authors independently screened trials identified appraised quality papers extracted data main results one study male participants met inclusion criteria although primary outcome review score height weight assessed study trial considered overall good quality following weeks treatment participants weekly idursulfase group demonstrated significant improvement rate compared placebo primary outcome distance walked sixminutes basis sum ranks change baseline mean difference confidence interval every week idursulfase group also showed improvement significant compared placebo mean difference confidence interval weeks statistical significance difference per cent predicted forced vital capacity three groups absolute forced vital capacity significantly increased baseline weekly dosing group compared placebo mean difference confidence interval difference observed every week idursulfase group placebo addition liver spleen volumes urine glycosaminoglycan excretion significantly reduced baseline idursulfase dosing regimens idursulfase generally well tolerated infusion reactions occur idursulfase antibodies detected participants end study related smaller reduction urine glycosaminoglycan levels authors conclusions current evidence limited randomised clinical trial identified considered good quality failed describe important outcomes demonstrated enzyme replacement therapy idursulfase effective relation functional capacity distance walked six minutes forced vital capacity liver spleen volumes urine glycosaminoglycan excretion people mucopolysaccharidosis type compared placebo available evidence included study literature outcomes improvement growth sleep apnoea cardiac function quality life mortality studies needed obtain information long term effectiveness safety enzyme replacement therapy
several grams labelled trans linoleic linolenic acids high chemical isomeric purities prepared human metabolism studies total octadeca dienoic acid octadeca trienoic acid obtained respectively seven steps overall yield steps overall yield bromo heptan trans bromo precursors used labelling synthesised using copper catalysed couplings trans fatty acids obtained via nitrile derivatives total octadeca dienoic acid octadeca trienoic acid prepared five steps respectively overall yield large quantities bromo chloro precursors synthesised commercially available acid according barton procedure cases main impurities labelled fatty acid characterised elsevier science ireland ltd rights reserved
pcr detection quantification vaginal lactobacilli remains problematic high level genetic heterogeneity taxonomic complexity within genus lactobacillus aim present study identify conserved sequences among genomes major species vaginal lactobacilli could used development pcr based method quantitative determination vaginal microbiota specific lactobacilli comparative analysis genomes several species vaginal lactobacilli allowed identify conserved regions rplk gene encodes ribosomal protein design group specific pcr primers probe selected species acidophilus complex including major vaginal lactobacilli lactobacillus crispatus gasseri iners jensenii well species less common vaginal microbiota applicability new assay routine diagnostic testing evaluated using set clinical samples assay able detect quantify vagina associated lactobacilli within wide range initial dna template concentrations indicating promising potential clinical applications elsevier ltd rights reserved
background reporting new cases enterovirus associated acute flaccid myelitis afm essential understand virus causes neurological damage characterize strains associated afm case presentation previously healthy year old boy presented sudden weakness limited mobility left arm two days earlier upper respiratory illness mild fever admission physical examination showed child febrile degrees alert stiff neck weakness left arm hypotonic areflexic cerebrospinal fluid csf examination showed mild increase white blood cell count neutrophils slightly elevated protein concentration bacterial culture molecular biology tests detecting viral infection csf negative patient treated intravenous ceftriaxone acyclovir despite therapy within muscle weakness extended four limbs exhibited greatly reduced mobility due worsening clinical prognosis child transferred pediatric intensive care unit admission diagnosed acute flaccid paralysis four limbs brain magnetic resonance imaging mri negative except focal signal alteration dorsal portion medulla oblongata also involving pontine tegmentum whereas spine mri showed extensive signal alteration cervical dorsal spinal cord reported myelitis signal alteration mainly localized central grey matter likely anterior horns molecular biology tests performed nasopharyngeal aspirate bronchoalveolar lavage fluid negative bacteria positive clade plasmapheresis performed corticosteroids intravenous immunoglobulins administered weeks treatment signs symptoms afm significantly reduced although weakness tingling remained patient four limbs mri acquired weeks showed previously reported alterations longer present conclusion case suggests neurotropic agent cause afm strains circulating europe disease surveillance required better understand pathology compare various strains cause afm
aim investigate action isothiafludine derivative bis heterocycle tandem pairs natural product leucamide replication cycle hepatitis virus hbv vitro vivo methods hbv replication cycle monitored hepg cells using qpcr qrt pcr southern northern blotting hbv protein expression capsid assembly detected using western blotting native agarose gel electrophoresis analysis interaction pregenomic rna pgrna core protein investigated rna immunoprecipitation evaluate anti hbv effect vivo dhbv infected ducks orally administered results suppressed intracellular hbv replication hepg cells value mol whereas compound inhibited cell viability value mol furthermore active replication various drug resistant hbv mutants including etv dual resistant adv resistant hbv mutants mol concentration dependently reduced encapsidated hbv pgrna resulting assembly replication deficient capsids hepg cells oral administration dose dependently inhibited dhbv dna replication dhbv infected ducks conclusion inhibits hbv replication interfering interaction pgrna hbcag capsid assembly process thus increasing replication deficient hbv capsids mechanism action might provide new therapeutic strategy combat hbv infection
propose multi resolution scanning approach identifying two sample differences windows multiple scales constructed nested dyadic partitioning sample space hypothesis regarding two sample difference defined window instead testing hypotheses different windows independently adopt joint graphical model namely markov tree null alternative states hypotheses incorporate spatial correlation across windows induced dependence allows borrowing strength across nearby nested windows show critical detecting high resolution local differences evaluate performance method simulation show substantially outperforms state art two sample tests two sample difference local involving small subset data apply flow cytometry data set immunology successfully identifies highly local differences addition show control properly multiple testing decision theoretic approach well summarize report inferred two sample difference also construct hierarchical extensions framework incorporate adaptivity construction scanning windows improve inference
yeasts major producer biotechnology products worldwide exceeding production capacity economic revenues groups industrial microorganisms yeasts wide ranging fundamental industrial importance scientific food medical agricultural disciplines fig saccharomyces important genus yeast fundamental applied perspectives expansively studied non saccharomyces yeasts non conventional yeasts including members ascomycetes basidiomycetes also substantial current utility potential applicability biotechnology earlier mini review biotechnology non saccharomyces yeasts ascomycetes johnson appl microb biotechnol extensive biotechnological utility potential ascomycetous yeasts described ascomycetous yeasts particularly important food ethanol formation production single cell protein feeds fodder heterologous production proteins enzymes model fundamental organisms delineation genes function mammalian human metabolism disease processes contrast roles basidiomycetous yeasts biotechnology mainly evaluated past decades compared ascomycetous yeasts currently limited industrial utility biotechnology perspective basidiomycetous yeasts known mainly production enzymes used pharmaceutical chemical synthesis production certain classes primary secondary metabolites terpenoids carotenoids aerobic catabolism complex carbon sources bioremediation environmental pollutants xenotoxicants notwithstanding basidiomycetous yeasts appear considerable potential biotechnology owing catabolic utilities formation enzymes acting recalcitrant substrates production unique primary secondary metabolites earlier mini review johnson appl microb biotechnol motivated preparation publication landmark three volume set yeasts taxonomic study edition kurtzman
recent advances understanding molecular biology vulvar squamous cell carcinoma vscc provide insight future management vscc molecular targeted therapies offer opportunity improve treatment forgotten women cancer incidence vulvar squamous cell carcinoma vscc rise since new treatment advanced recurrent disease decades women succumbing disease despite two distinct etiologies vscc human papillomavirus hpv associated hpv independent disease difference therapeutic options literature review carried searching embase medline databases january march pairing keywords vulvar carcinoma vulva cancer vulvar vulva molecular markers involved cell cycle apoptosis angiogenesis molecular targets prognostic significance identified targeted agents therapeutic relevance hpv independent hpv associated vscc reviewed recent advances understanding molecular biology vscc provide insight future management vscc molecular targeted therapies aberrant cell cycle activity common hpv associated hpv independent vscc characterized overexpression cyclin supporting targeting protein products downstream pathways extracellular regulators cellular activity egfr well inhibitors angiogenesis clinically evaluated vscc hpv independent vscc characterized actionable mutations including pik cdkna pten hpv associated disease therapeutic vaccines targeting hpv oncogenes immune based therapies investigation paucity clinical trials recent years neglected women cancer directed therapy cell cycle regulatory molecules extracellular proteins inhibition angiogenesis broad therapeutic relevance vscc therapeutic strategies target actionable mutations explored hpv associated vscc novel treatments exploit virology hpv enhance host immune response merit study
gloverin antibacterial peptide previously isolated hyalophora gloveyi known exert inhibition effect growth gram negative bacteria gnb expressed genes immunized bombyx mori screened gloverin like gene bmglp found thought respond bacterial invasion study presents data gene organization expression candidate novel antibacterial peptide bombyx mori complete sequence determined via race revealed bmglp identical recently reported clone bmgloverin mrna transcription gene increased transiently high degree around similar hours infection evidenced results northern blotting hybridization analysis based tentative coding sequence amplified genomic sequence determined gene harbored introns interestingly found retrotransposon relative sequences introns southern blotting analysis sequencing data indicated bmglp gene another relative pseudo sequences genome also attempted generation recombinant peptides prokaryotic cell system obtained truncated peptides unable determine existence antibacterial activity cell extract physiological conditions studies expression system activity test conditions made representative actual insect organism finally proposed possibility type evolutionary link connects retrotransposons activity insect immunity gene variation
allatostatins important regulatory neuropeptides widely distributed invertebrates execute functions either neural immoral routes however regulatory mechanism gene expression unclear paper report naturally occurring amisense transcript named asmacro ast crustacean fglamide allatostatin gene macro ast prawn macrobrachium rosenbergii asmacro asta contains sequence fully complementary end macro asta knowledge first report natural antisense transcript crustacean first endogenous antisense transcript identified allatostatin genes northern blotting analysis demonstrated gene expressed thoracic ganglia sense gene also expressed furthermore detected rna rna duplex sense antisense complementary region using rnasc protection analysis pcr results suggest antisense gene may play role regulation macro ast gene expression elsevier inc rights reserved
hypothesized impaired proteasomal function affects gene expression cardiomyocytes identify genes proteomics based analysis neonatal rat cardiac myocytes treated proteasome inhibitor comparison vehicle treated control cells performed treatment induced reproducible changes protein expression profile analyzed two dimensional difference gel electrophoresis followed tryptic peptide mass fingerprinting spot identification maldi tof mass spectrometry identified protein alterations could grouped three major categories induction small heat shock proteins hsps chaperonic function hsp alpha beta crystallin cardiovascular hsp altered expression actin associated proteins cofilin transgelin induction antioxidant proteins peroxiredoxin superoxide dismutase hemeoxygenase northern blotting revealed expression regulated mrna level given proteasomal activity decreased cardiovascular diseases alterations proteasome dependent control mrna expression could provide novel mechanism disease progression modulated elsevier inc rights reserved
collodion baby severe form congenital ichthyosis detected neonatal period often characteristic clinical picture evolution fatal often causes dry ichthyosis thanks molecular biology techniques prenatal diagnosis made since weeks amenorrhea allowing genetic counselling prognosis depends several parameters namely degree initial manifestation duration desquamation well underlying ichthyosis rewiew literature aims clarify diagnostic aspects therapeutic treatment well role antenatal diagnosis based new observation collodion baby born weeks parturient woman index case infant deaths occurring first day life
bioactive protein components snake venom complexes utilized studies enzymology structural biology pharmacology gloydius shedaoensis snake gss snake species found exclusively chinese shedao snake island dalian investigate protein components chinese gss venom gssv initialized proteomic assay gssv combination sodium dodecyl sulfate polyacrylamide gel electrophoresis high performance liquid chromatography hplc nanoelectrospray ionization tandem mass spectrometry nesi thirty gel bands visualized coomassie blue staining excised digested trypsin tryptic digested peptides separated hplc subsequently sequenced nesi twenty four types proteins identified searching mass spectrometry data ncbinr database turbosequest bioworks abundant proteins phospholipase metalloproteinase amino acid oxidase laao serine protease thrombin like enzyme except types known snake venom proteins homolog peptides hypothetical protein pflc loc protein dead deah box helicase like pancreatic trypsin organisms matched gssv protein components mass spectrometric data also indicated dimerization happens pla monomer dimer plas coexist gssv truncation hydrolysis might happen laaos three molecular weight ranged laao species present gssv results provide anatomical view protein composition important information protein characteristics gssv anat rec wiley liss inc
ganoderma lingzhi kind precious medicinal mushroom micrornas mirnas play important role regulation broad range biological processes study first report mirnas lingzhi sporocarp total known mirnas putative candidate mirnas identified first time lingzhi sporocarp target gene prediction known mirnas targeted genes one predicted targeted genes might regulated one mirna functional enrichment kegg analysis demonstrated target genes related cancer signal transduction occupied largest proportion total seven mirnas four known mirnas three mirnas high abundance selected expression confirmation quantitative real time pcr qrt pcr northern blotting first comprehensive study mirna composition lingzhi resulted addition significant number novel mirna sequences mirbase laid foundation understanding function mirnas regulation lingzhi published elsevier behalf mycological society japan
fatty acid desaturase fad introduces double bond position delta oleic acid form linoleic acid higher plants microbes new transgenic expression cassette containing cmv promoter fad cdna polya constructedto produce transgenic mice among healthy offspring founders integrated cotton fad transgene genomes demonstrated pcr southern blotting analysis founder mice fertile heterozygous fad female nontransgenic littermates used fatty acid analysis using gas chromatography one fad transgenic line showed substantial differences fatty acid profiles level linoleic acid increased transgenic muscles compared nontransgenic littermates moreover exhibited increase arachidonic acid muscles liver compared nontransgenic littermates results indicate plant fad gene functionally expressed transgenic mice may playan active role conversion oleic acid linoleic acid
objective establish transgenic mouse ctnt gene make animal model dilated cardiomyopathy methods transgenic plasmid constructed inserting ctnt gene driven alpha mhc promoter expression level gene determined northern blotting pathologic changes observed light microscopy transmission electronic microscopy analyzed echocardiography localization mutant human ctnt protein detected immunohistochemistry hypertrophy markers analyzed pcr results transgenic mice carrying ctnt mutation established ctnt expressed fold endogenous ctnt gene showed assemble sarcomere transgenic heart exhibited thinner ventricular wall enlarged ventricular chamber interstitial fibrosis elongated lysed myofrils also observed transgenic heart tissue function movement ventricular wall significantly decreased immature death occurred months age immature death rate months age ctnt mice increased nppb acta decreased atpa detected transgenic heart conclusions expression mutant ctnt mouse heart caused ventricular chamber enlargement systolic dysfunction myocardial hypertrophy interstitial fibrosis suggesting ctnt gene causal factor dcm ctnt transgenic mouse useful animal model study human dcm published elsevier ireland ltd
dutch microbiologist biochemist albert jan kluyver early proponent idea biochemical unity concept might demonstrated careful study microbial life fundamental relatedness living systems obvious correlate theory evolution modern attempts construct phylogenetic schemes support relatedness comparison genomes approach kluyver scientific descendants predated tools modern molecular biology decades kluyver poorly recognized today yet influence time profound lens today however argued focus kluyver others create taxonomic phylogenetic schemes using morphology biochemistry distorted hindered progress discipline microbiology perception older approaches focused much reductionist worldview essay argues contrast careful characterization fundamental microbial metabolism physiology kluyver made many advances latter part twentieth century possible offering framework many respects anticipated current view phylogeny directly indirectly training generation scientists became leaders explosive growth biotechnology
member family cytokines shown anti tumor activity several pre clinical models due anti proliferative anti angiogenic immune enhancing effects hand demonstrated immune regulatory activities inhibition auto immunity mouse models also reported similar ifn gamma induces expression ido immune regulatory molecules human cancer cells proteomic analysis reveals ifn gamma display broad overlap functions human ovarian cancer cells indeed among proteins modulated either cytokine treatment skov cells showed concordant modulation cytokines smaller number differentially modulated regulated proteins common ifn gamma addition functional analysis regulated protein networks highlighted pathways interferon signaling regulation antigen presentation protection natural killer cell mediated cytotoxicity regulation protein polyubiquitination proteasome aminoacid catabolism regulation viral protein levels importantly found induced hla class molecule expression human cancer cells different histotypes including tumor cells showing low expression failed cancer cell line bearing homozygous deletion gene altogether data point broad set activities shared ifn gamma dependent common activation stat pathway data add explanation anti tumor activity also dual role immune regulation
extracellular adenosine ubiquitous signaling molecule modulates wide array biological processes recently significant advances made understanding adenosine receptor review first summarize general characteristics describe multiple binding partners receptor newly identified alpha actinin discuss associated proteins could modulate functions including certain seemingly paradoxical functions receptor growing evidence indicates critical role cancer renal disease diabetes addition importance regulation vascular diseases lung disease also discuss role cancer renal disease diabetes potential receptor target treating three diseases
orm saccharomyces cerevisiae like proteins ormdls yeast orthologs orms negative homeostatic regulators initiating enzyme sphingolipid biosynthesis serine palmitoyltransferase spt genome wide association studies established strong correlation elevated expression endoplasmic reticulum protein ormdl risk childhood asthma test notion elevated levels ormdl decrease sphingolipid biosynthesis tested cultured human bronchial epithelial cells hbecs immortalized untransformed airway epithelial cell line hela cells cervical adenocarcinoma cell line surprisingly elevated ormdl expression suppress novo biosynthesis sphingolipids determined ormdl expressed functional excess relative spt normal levels expression ormdls spt form stable complexes increased elevated ormdl expression although sphingolipid biosynthesis decreased elevated ormdl expression steady state mass levels major sphingolipids marginally decreased low level ormdl expression hbecs data indicate contribution ormdl asthma risk may involve changes sphingolipid metabolism connection complex
establishment dna rna sequencing means clinical diagnosis analysis proteome next line matter fact proteome based diagnostics bound even informative since proteins directly involved actual cellular processes responsible disease however structural variation biochemical differences proteins much wider range concentration spatial distribution well fact protein activity frequently relies interaction increase methodological complexity enormously particularly accuracy robustness required sufficient clinical utility discuss contribution protein microarray formats could play towards proteome based diagnostics
background oral cancer one common malignant lesions head neck cancer aggressive lethal disease significant improvements overall survival last decades moreover incidence oral hpv positive tumors rising especially young people oral neoplasm develops numerous molecular imbalances affect key genes signaling pathways however molecular mechanisms involved pathogenesis progression oral tumors still fully determined order improve quality life long term survival rate patients vital establish accurate biomarkers help early diagnosis prognosis development target treatments biomarkers may possibly allow selection patients benefit therapy modality helping optimization intensity sequence treatments order decrease side effects improve survival conclusion review discuss current knowledge oral cancer potential role omics approaches identify molecular biomarkers improvement early diagnosis treatment prognosis pursuit improve quality life decrease mortality rates oral patients needs centralized identification critical genes oral carcinogenesis understanding molecular biology oral cancer vital search new therapies molecular targeted therapies promising treatment patients
direct research gut microbiota understanding role important organ human individuals difficult owing vast diversity host specificity well ethical concerns transplantation human gut microbiota surrogate hosts significantly facilitate research human gut ecology metabolism immunity rodents based model provides results low relevance humans new human flora associated hfa piglet model hereby established taking advantage high similarity pigs humans respect anatomy physiology metabolism digestive system piglets delivered via cesarean section spf level barrier system inoculated orally whole fecal suspension one healthy year old boy establishment composition intestinal microbiota hfa piglets analyzed compared human donor using enterobacterial repetitive intergenic consensus sequence pcr fingerprinting based community dna hybridization group specific pcr temperature gradient gel electrophoresis real time pcr molecular profiling demonstrated transplantation gut microbiota human germfree piglets produced donor like microbial community minimal individual variation microbial succession aging germfree piglets also similar observed humans hfa model provides significantly improved system research gut ecology human metabolism nutrition drug discovery
significant contribution microbial corrosion material degradation industrial environments widely investigated especially recent years however process remains largely underestimated ever today control proved difficult indeed recent environmental issues regulatory led reduction biocides anticorrosive treatments often without appropriate revision procedures without careful monitoring thus affecting effectiveness treatments multitude bacterial species lives within corrosive biofilm organisms interacts synergistically competitive way adapting external agents even extreme conditions combining modern electrochemical techniques molecular biology possible today monitor biocorrosion risk highlight complexity phenomenon relevant involvement specific bacterial strains including sulphate reducers bacteria sulfur cycle well role enzymes oxidative metabolism confirmed techniques enzymes expressed vast number microorganisms aerobic anaerobic function environmental conditions
nucleophosmin npm human epidermal growth factor receptor abnormally expressed various types human malignant tumors including gastric cancer closely associated cancer chemoresistance however interaction roles oxaliplatin resistance fully understood therefore present study aimed elucidate relationship npm gastric cancer cell lines clinical samples investigated role resistance gastric cancer oxaliplatin western blotting reverse transcription quantitative polymerase chain reaction confirmed npm expression significantly upregulated gastric cancer cells clinical samples expression levels strongly correlated however expression affected upregulation downregulation npm expression gastric cancer cells cell counting kit assays demonstrated cell sensitivity oxaliplatin decreased simultaneously increase npm expression furthermore inhibition expression using trastuzumab significantly increased sensitivity cells oxaliplatin occurred simultaneously downregulation npm results indicated inhibition npm downstream signal may novel strategy overcome oxaliplatin resistant gastric cancer trastuzumab oxaliplatin may exhibit synergistic antitumor effect positive gastric cancer cells
natural killer cells first described years ago last years shown tremendous progress understanding biology ability manipulate clinical therapeutic effect despite increased understanding clinicians scientists investigating cells biology remains confusing subject many wide array receptors complex interactions multiple models predicting function contradictory data literature microscopically indistinguishable cells share many effector functions mechanisms target recognition completely distinct yet complimentary cells review provide basic understanding cell biology hla recognition compared contrasted cells using metaphor border patrol passports conclude summary evidence cell effects hematologic malignancies describe new advances cell immunotherapy aimed improving effects elsevier ltd rights reserved
present study defined simplified physiologically based pharmacokinetic pbpk model dioxane humans based vitro metabolic parameters determined using relevant liver microsomes coefficients derived silico physiological parameters derived literature developed pbpk model rats model consists chemical absorption compartment metabolizing compartment central compartment dioxane evaluation rat model performed comparisons experimental pharmacokinetic values blood urine obtained rats vivo daily oral treatment dioxane observed adverse effect level days elimination rates dioxane vitro established using data rat liver microsomes pooled human liver microsomes dioxane expected absorbed cleared rapidly body silico case rats confirmed experimentally vivo repeated low dose treatments results indicate simplified pbpk model dioxane useful forward dosimetry approach humans model may also useful simulating blood concentrations related compounds resulting exposure low chemical doses
primary graft dysfunction pgd principal cause early morbidity mortality lung transplantation pathogenic mechanisms fully clarified date studies using standard clinical assays linked microbial factors pgd previously used comprehensive metagenomic methods characterize viruses lung allografts transplant found levels anellovirus mainly torque teno viruses ttvs significantly higher nontransplanted healthy controls used quantitative polymerase chain reaction analyze ttv shotgun metagenomics characterize full viral communities acellular bronchoalveolar lavage donor organs postreperfusion allografts pgd non pgd lung transplant recipient pairs unexpectedly ttv dna levels elevated fold donor lungs compared healthy adults although absolute ttv levels differ pgd status pgd cases showed smaller increase ttv levels transplant control recipients metagenomic sequencing revealed mainly ttv bacteriophages respiratory tract bacteria viral taxa distinguished pgd cases controls findings suggest conditions associated brain death promote ttv replication greater immune activation tissue injury associated pgd may restrict ttv abundance lung investigation viral microbiome donor organs recipient allografts early lung transplantation reveals torque teno viruses markedly elevated donor lungs prior organ recovery perioperative viral dynamics differ transplant recipients experience primary graft dysfunction
background though many countries including china moving towards malaria elimination malaria remains major global health threat due spread antimalarial drug resistance need innovative medical products elimination phase research development innovative tools epidemic elimination areas needed study aims identify trends gaps malaria china aims offer suggestions china effectively involved global malaria methods quantitative analysis carried collecting data chinese malaria related research programmes invention patents china articles published chinese researchers pubmed chinese databases data screened extracted numerical analysis categorized basic sciences drug drug resistance immunology vaccines diagnostics detection chronological subgroup comparisons results number malaria activities shown trend increase past years however activities fluctuated within past years past years drug drug resistance accounted highest percentages research programmes articles pubmed chinese databases patents however activities mainly related artemisinin immunology vaccines continuous interest china public entities focus remains basic science area high efficiency diagnostics rarely seen reported china conclusions china long devoted malaria multiple areas including drugs drug resistance immunology vaccines diagnostics received significantly less attention however also area china make contribution focus malaria needed especially area diagnostics china would like contribute significant way global malaria control elimination
opisthorchis viverrini major public health concern southeast asia various reports suggested parasite may represent species complex genetic structure region perhaps dictated geographical factors different species intermediate hosts used four microsatellite loci analyze viverrini adult worms originating six species cyprinid fish thailand lao pdr two distinct viverrini populations observed ban phai thailand one subgroup occurred hosted two different fish species subgroups occurred fish luang lao pdr represented different degrees among fish hosts data suggest although geographical separation important fish host specificity influencing genetic structure possible two species opisthorchis little interbreeding present near vientiane lao pdr
mycobacteria grow divide asymmetrically creating variability growth pole age growth properties antibiotic susceptibilities investigate importance growth pole age growth properties determining spectrum responses mycobacterium smegmatis challenge rifampicin used combination live cell microscopy modeling prospectively identify subpopulations altered rifampicin susceptibility found two subpopulations increased susceptibility initiation treatment susceptible cells either small early stages cell cycle large later stages cell cycle contrast temporal window susceptibility tolerance associated factors inherited division long birth length mature growth poles thus rifampicin response complex due combination differences established asymmetric division timing treatment relative cell birth
background bladder cancer relatively common potentially life threatening neoplasm ranks ninth terms worldwide cancer incidence aim study determine deletions sequence variations mitochondrial displacement loop loop region blood specimens tumoral tissues patients bladder cancer compared adjacent non tumoral tissues methods dna blood tumoral tissues adjacent non tumoral tissues twenty six patients bladder cancer dna blood healthy controls different ethnicities investigated determine sequence variation mitochondrial loop region using multiplex polymerase chain reaction pcr dna sequencing southern blotting analysis results total variations reported new mutations deletions detected tumoral tissues adjacent non tumoral tissues blood samples patients although polymorphisms loci significantly correlated bladder cancer variation significantly present patient samples compared control samples variations including ctc ctc ctc ctc mitochondrial dna patients control samples conclusion study suggests mitochondrial dna loop mutations may play significant role etiology bladder cancer facilitate definition carcinogenesis related mutations human cancer
background relatively attempts made set assay allows measurement lymphatic endothelial cells lecs motility nowadays widely used methods involve adaptation boyden chamber method wound scratch assay showing limitations due long expensive setup high variability methods results propose new economic easy setup lec motility elm assay contribute study lymphangiogenesis experimental setup consists extending coating flask extracellular matrix ecm proteins also area opposite cap lecs initially seeded various densities day flasks inclined angle degrees cover entire coated surface twenty four hours later flasks moved standard position motility cells easily observed using elm assay able compare motility rate lecs isolated different origins seeded different substrates conclusion propose use new method evaluate motility lecs elm assay costeffective analysis several advantages easily set cell biology laboratory carried rapidly allows monitoring cellular motility long period
order identify candidate cation channels important retinal physiology trp channel genes surveyed expression mouse retina transcripts trp channels detected pcr sequencing northern blotting revealed mrnas trp channel genes enriched retina strongest signals observed trpc trpc trpm trpm trpml clear signals obtained trpc trpm trpp trpv trpv situ hybridization immunofluorescence revealed widespread expression throughout multiple retinal layers trpc trpc trpc trpml pkd trpp striking localization enhanced mrna expression observed trpc photoreceptor inner segment layer trpm inner nuclear layer inl trpm inl trpml outer plexiform nuclear layers strong immunofluorescence signal cone outer segments observed trpm trpp trpc immunostaining largely confined inl cells immediately adjacent inner plexiform layer trpv antibodies stained photoreceptor axons outer plexiform layer expression trpm splice variants strong ciliary body whereas trpm strongly expressed retinal pigmented epithelium elsevier ltd rights reserved
nattokinase health product prevention potential control thrombosis diseases explore possibility enhancing production bacillus subtilis altering promoter gene paprn tested several methods substituted wild type box tacaat paprn consensus sequence tataat sigma dependent promoters mutated original box tactaa partial consensus sequence tacaca expressed aprn two tandem promoters respectively efficacies changes monitored fibrinolytic activity sds page northern blotting analyses fibrinolytic activity analysis showed altering region paprn could increase production production significantly higher reported literatures similar results obtained sds page northern blotting analyses engineered promoter also able enhance expression beta glucuronidase gus partial alteration element could slightly improve production two tandem promoters marginal effects production study showed alteration elements paprn especially element effective way enhance production heterologous proteins subtilis
addition soybean protein materials meat products common practice food industry potential hidden allergenic commodity study aimed proposing novel specific highly sensitive real time pcr system detection quantification soybean allergenic ingredient processed meat products method achieved limit detection soybean dna copies adequate real time pcr performance parameters regardless soybean material concentrate isolate thermal treatments normalised approach also proposed range soybean material pork meat successfully validated applied processed meat products soybean identified tested samples cooked ham mortadella range samples complying labelling regulations result undeclared soybean elsevier ltd rights reserved
benzene initially metabolized benzene oxide either undergoes metabolism reacts macromolecules including proteins previously reported levels benzene oxide albumin adducts alb analyzed workers exposed ppm benzene controls shanghai china although exposed workers controls significant levels alb blood exposed subjects adduct levels pmol protein much greater controls pmol protein natural logarithm alb level regressed upon natural logarithm exposure among exposed subjects strong effect benzene exposure observed slope relationship alb benzene exposure significantly less one log space infer production benzene oxide less proportional benzene exposure since benzene substrate cype results consistent saturation cyp metabolism indicate deviations linear metabolism began benzene exposures ppm pronounced saturation apparent ppm knowledge first study investigate linearity human metabolism carcinogen based upon protein adducts elsevier science rights reserved
cells appreciable part enzymes associated lipid membranes academic experimental studies function membrane enzymes pla representing prototype interfacial enzymology often focused enzyme vesicle interaction specifically conversion lipid forming external leaflet vesicle membrane corresponding kinetics complicated many factors inherent interfacial physics chemistry understanding relative role factors quantitatively described still limited present mean field kinetic equations taking formation rafts membrane product induced membrane strain account analyze various scenarios lipid conversion particular scrutinize conditions kinetics may exhibit transition relatively long latency period steady state regime fast nearly constant reaction rate specifically discuss likely role pore formation external lipid layer transition latter effect may caused product induced tensile strain layer elsevier rights reserved
rapid development novel nanoscale materials applications biomedicine urges improved characterization nanobio interfaces nanoparticles exhibit unique structures properties often different corresponding bulk materials nature interactions biological systems remains poorly characterized solution nmr spectroscopy mature technique investigation biomolecular structure dynamics intermolecular associations however use protein nanoparticle interaction studies remains scarce highly challenging particularly due unfavorable hydrodynamic properties nanoscale assemblies nonetheless recent efforts demonstrated number nmr observables chemical shifts signal intensities amide exchange rates relaxation parameters together newly designed saturation transfer experiments could successfully employed characterize orientation structure dynamics proteins adsorbed onto nanoparticle surfaces review provides first survey critical assessment contributions solution nmr spectroscopy study transient interactions proteins inorganic gold silver silica organic polymer carbon lipid based nanoparticles article part special issue entitled physiological enzymology protein functions elsevier rights reserved
gene encoding cellobiohydrolase cbhb thermophilic fungus thielavia terrestris identified subcloned expressed pichia pastoris cbhb encoded amino acid residues molecular mass kda domain analysis indicated cbhb contains family glycosyl hydrolase catalytic core lacks carbohydrate binding module purified cbhb exhibited optimum catalytic activity degrees methylumbelliferryl cellobioside substrate retained activity following incubation degrees despite lack activity toward microcrystalline substrates enzyme worked synergistically commercial enzyme cocktail cellic ctec enhance saccharification added reaction mixture containing alkaline pretreated oil palm empty fruit bunch opefb attenuated total reflectance fourier transform infrared spectroscopy suggested reduction lignin crystalline cellulose opefb samples supplemented cbhb scanning electron microscopy revealed greater destruction extent opefb strands samples supplemented cbhb compared nonsupplemented control therefore cbhb potential complement commercial enzymes hydrolyzing lignocellulosic biomass international union biochemistry molecular biology inc
introduction diffuse intrinsic pontine gliomas dipg constitute brain tumors pediatric population currently prognosis remains poor overall survival months recently indication dipg biopsy enlarged due development molecular biology various ongoing clinical therapeutic trials classically biopsy performed using stereotactic frame assisted procedure workflow may sometimes heavy complex especially children study authors present experience frameless robotic guided biopsy dipg pediatric population patients methods retrospective study series five consecutive pediatric patients harboring dipg treated year period patients underwent frameless robotic guided biopsy via transcerebellar approach results among patients studied male female median age years range years clinical presentation included ataxia hemiparesis cranial nerve palsy patients mri imaging lesion showed typical dipg features located pons hypo intensity hyper intensity signal sequences diffuse gadolinium enhancement mean procedure time minutes range minutes new postoperative neurological deficits recorded histological diagnosis achieved cases follows two anaplastic astrocytomas grade iii two glioblastomas one diffuse astrocytoma grade iii conclusion frameless robotic assisted biopsy dipg pediatric population easier effective safe highly accurate method achieve diagnosis elsevier masson sas rights reserved
rna binding proteins play critical roles regulation gene expression among several families rna binding proteins puf pumilio fbf proteins subject extensive investigations bind rna sequence specific manner evolutionarily conserved among wide range organisms outstanding feature proteins highly conserved rna binding domain known pumilio homology domain pum mostly consists eight tandem repeats repeat recognizes rna base simple three letter code programmed order change sequence specificity protein using tailored architecture researchers able change specificity pum target desired transcripts cell even subcellular compartments potential applications versatile tool molecular cell biology seem unbounded use factors pharmaceutics might interesting field study near future
centennial anniversary first report pressure denaturation proteins nobel laureate bridgman celebrated review application high pressure key variable studying energetics interactions proteins appears demonstrate combined temperature pressure dependent studies help delineate free energy landscape proteins elucidate features essential determining stability pressure perturbation also serves important tool explore fluctuations proteins reveal conformational substates shaping free energy landscape proteins interactions conformational fluctuations dictate plethora biological processes also implicated number debilitating diseases finally advantages using pressure explore biomolecular assemblies modulate enzymatic reactions discussed
nadp dependent alcohol dehydrogenase ralstonia rasadh belongs protein superfamily short chain dehydrogenases reductases sdrs enzyme accepts different types substratesincluding bulky bulky well small bulky secondary alcohols ketoneswith high stereoselectivity offers potential biocatalyst industrial biotechnology understand substrate cosubstrate specificities rasadh determined crystal structure apo enzyme well nadp bound state resolutions angstrom rasadh displays homotetrameric quaternary structure described dimer homodimers subunit seven stranded parallel sheet flanked three helices side forms rossmann fold type dinucleotide binding domain docking well known substrate phenylethanol clearly revealed structural determinants stereospecificity favor practical rasadh application context established cofactor recycling systems example involving nadh dependent amino acid dehydrogenase attempted rationally change cosubstrate specificity nadp nad utilizing structural information nadp specificity largely governed residues asn gly arg arg furthermore extensive sequence alignment homologous dehydrogenases different cosubstrate specificities revealed modified general sdr motif asng instead nnag positions rasadh consequently constructed mutant enzymes one four six amino acid exchanges rasadh better able accept nad showing much reduced catalytic efficiency nadp leading change nadh nadph specificity factor approximate million biotechnol biotechnol bioeng wiley periodicals inc
vegetarian diets associated lower incidence several chronic diseases benefits plant based diets related mainly improvement metabolic parameters indicate risk diseases metabolic factors oxidative balance lipid profile glucose homeostasis improved directly diet paradoxically characteristics vegetarian diets may promote negative scenario increases risk certain chronic diseases additionally many benefits vegetarian diet mediated gut microbiota members taxonomic functional differences also produce diverse specific metabolites vary according whether host consumes omnivorous vegetarian diet review examines modulation human metabolism gut microbiota vegetarian omnivorous dietary patterns explores modulation may affect risk cardiovascular disease
alpha thymosin alpha immune booster plays important role maturation differentiation function cells also activate production cytokines dendritic cells tal one two thymosin proteins potential future clinical applications order express alpha protein plants designed synthesized alpha gene according plant codon usage bias created novel alpha concatemer four copies alpha gene arranged end end tandem designated alpha subsequently plant binary expression vector prd alpha constructed introduced tomato via agrobacterium tumefaciens mediated transformation selection regenerated tomato plants resistant kanamycin obtained four transgenic tomato plants confirmed pcr southern blotting pcr reverse transcription pcr analysis showed alpha gene transcribed specifically tomato solanum lycopersicum formerly lycopersicon esculentum fruits elisa analysis showed content tot protein reached maximum fresh weight mature tomato fruit western blot analysis confirmed expression alpha protein transgenic tomato fruits mtt dimethylthiazol diphenyl tetrazolium bromide assay showed alpha protein derived transgenic tomatoes exhibited bioactivity stimulate proliferation mice splenic lymphocytes vitro specific activity alpha protein artificial system higher synthetic escherichia coli system study first report successful expression bioactive alpha plants also provide basis furl ther development plant system produce alpha
oscillators essential fuel autonomous behaviours molecular systems artificial oscillators built programmable biological molecules dna rna generally easy build tune serve timers biological computation regulation describe new artificial nucleic acid biochemical reaction network demonstrate capacity exhibit oscillatory solutions network built vitro using nucleic acids three bacteriophage enzymes potential implemented cells numerical simulations suggest oscillations occur realistic range reaction rates concentrations
objective study examine age dependent changes weighted weighted image contrasts spin echo relaxation time human brain healthy ageing total participants ages years old scanned tesla system using weighted weighted quantitative spin echo imaging contrast image intensities values calculated various regions including individual hippocampal subfields contrast noise cnr gray white signal intensity ratio gwr change hippocampus declined cingulate cortex age contrast cnr gwr declined brain regions relaxation time almost constant gray matter hippocampal subfields increased substantially white matter pointing age effect water relaxation white matter changes characteristics influence appearance brain images later life considered image analyses aged subjects speculated alterations cell biology level concomitant alterations local magnetic environment reduce dephasing subsequently prolong spin echo reduced diffusion effects later life
six different commercial methods compared evaluate efficiency recovering high quantity quality pcr compatible microbial dna agricultural biogas plant within last two decades biogas plants developed produce energy organic wastes devoted biomass complex biotransformations performed diverse consortium microorganisms important reserve genes enzymatic activities huge range applications various commercial fields respect ability isolate dna complex matrix high importance important parameters recovered dna good yield purity quality methods examined showed considerable differences quantity quality recovered dna usually observed higher amount accompanied degradation dna purity determined pcr amplificability two methods able provide dna pure enough directly amplified rest methods intermediate steps dilution addition polyvinylpyrrolidone necessary remove inhibitors present amplify dna real time pcr analysis evidenced expected prokaryotic dna much abundant eukaryotic dna methods suited recovering prokaryotic eukaryotic dna digestion analysis ribosomal dna amplicons confirmed influence methods final output allowing recovery fraction present species determined sequencing small prokaryotic eukaryotic ribosomal library
premise study transcriptome derived simple sequence repeat ssr markers developed asparagus cochinchinensis asparagaceae due application traditional medicine wild populations threatened collection even protected areas requiring immediate conservation efforts methods results based transcriptome data cochinchinensis primer pairs two seven alleles per locus selected initial validation primer pairs amplified across samples resulting polymorphic monomorphic microsatellite markers usefulness markers assessed individuals representing three populations cochinchinensis observed expected heterozygosity values ranged respectively cross species amplification markers tested related species rigidulus schoberioides conclusions polymorphic transcriptome derived ssr markers used molecular markers study population genetics ecological conservation cochinchinensis related taxa
ebola virus ebov infection results severe disease cases lethal hemorrhagic fever infection directed seven viral genes encode nine viral proteins definition viruses obligate intracellular parasites require aspects host cell biology order replicate genetic material assemble new virus particles subvert host cell antiviral responses currently licensed antivirals targeted viral proteins inhibit function however experience treating hiv influenza virus demonstrates resistant viruses soon selected emerging area virology transiently target host cell proteins play critical proviral roles virus biology especially acute infections advantage protein targeted evolutionary removed genome virus proteomics aid discovery biology identify cellular proteins may utilized virus facilitate infection work focused defining interactome ebov nucleoprotein identified cellular chaperones including hsp associate protein promote stability utilization mini genome replication system based recent makona isolate demonstrated disrupting stability adverse effect viral rna synthesis
engineered cells currently clinical trials treat patients cancer solid organ transplants autoimmune diseases however field still infancy design manufacturing cell therapies standardized performed mostly academic settings competing groups reliable methods define dose pharmacokinetics cell therapies need developed mid food drug administration fda approved cell therapeutics market fda regulations slowly adapting new technologies development engineered cell therapies requires advances immunology synthetic biology manufacturing processes government regulation review outline challenges discuss contributions pathologists make emerging field
aims hypothesis investigated effects rosiglitazone nefa triglyceride metabolism type diabetes methods double blind placebo controlled cross study rosiglitazone diet treated type diabetic subjects measured arteriovenous differences tissue blood flow forearm muscle subcutaneous abdominal adipose tissue used stable isotope techniques analysed gene expression responses mixed meal containing tripalmitin assessed results rosiglitazone induced insulin sensitisation without altering fasting nefa concentrations postprandial nefa concentrations lowered rosiglitazone compared placebo adipose tissue nefa release decreased fasting state rosiglitazone treatment associated increased fasting hormone sensitive lipase rate action postprandial triglyceride concentrations decreased rosiglitazone treatment despite unchanged fasting concentrations rosiglitazone change concentrations triglyceride rich lipoprotein remnants adipose tissue blood flow increased rosiglitazone postprandial triglyceride palmitic acid concentrations unchanged whilst nefa palmitic acid concentrations decreased muscle hexokinase mrna expression increased rosiglitazone whilst expression genes involved insulin signalling unchanged adipose tissue expression fabp lpl fat increased conclusions interpretation rosiglitazone decreases postprandial nefa triglyceride concentrations may represent decreased spillover nefas adipose tissue depots decreased delivery nefas liver may lead lowered postprandial triglyceride concentrations upregulation hexokinase expression muscle may contribute insulin sensitisation rosiglitazone
plant oil biosynthesis involves complex metabolic network multiple subcellular compartments parallel pathways cycles pathways dual function produce essential membrane lipids triacylglycerol modern molecular biology techniques provide tools alter plant oil compositions bioengineering however exceptions final composition triacylglycerol predicted one reason limited success oilseed bioengineering inadequate understanding control flux fatty acids various fatty acid modification triacylglycerol assembly pathways lipid metabolic network review focuses mechanisms acyl flux lipid metabolic network highlights uncertainty resides understanding seed oil biosynthesis article part special issue entitled plant lipid biology edited kent chapman ivo feussner elsevier rights reserved
background spite great promise metabolomics proven difficult execute untargeted generalizable manner liquid chromatography mass spectrometry made possible gather data thousands cellular metabolites however matching metabolites spectral features continues bottleneck meaning much collected information remains uninterpreted new metabolites seldom discovered untargeted studies challenges require new approaches consider compounds beyond available curated biochemistry databases description present metabolic silico network expansions mines extension known metabolite databases include molecules observed likely occur based known metabolites common biochemical reactions utilize algorithm called biochemical network integrated computational explorer bnice expert curated reaction rules based enzyme commission classification system propose novel chemical structures reactions comprise mine databases starting kyoto encyclopedia genes genomes kegg compound database mine contains compounds present pubchem database however mine compounds average higher structural similarity natural products compounds kegg pubchem mine databases able propose annotations set massbank spectra kegg alone equivalent pubchem returning far fewer candidates per spectra pubchem median candidates application mines accurate mass data enabled identity unknown peak confidently predicted conclusions mine databases freely accessible non commercial use via user friendly web tools http minedatabase mcs anl gov developer friendly apis mines improve metabolomics peak identification compared general chemical databases whose results include irrelevant synthetic compounds furthermore mines complement expand previous silico generated compound databases focus human metabolism actively developing database future versions resource incorporate transformation rules spontaneous chemical reactions advanced filtering prioritization candidate structures
exposure cold physical plasma proposed therapeutical value oncology via generation number biologically relevant redox active molecules cancer cells recognized eliminated cells immune system accordingly many tumors populated cells among helper cells cells lymphocyte population crucial effector immune responses tumor antigens response immunogenic cell death malignant cells however number populations exists distinct phenotypical features using cold atmospheric pressure argon plasma jet redox activity tested different cell subpopulations better understand immunological consequences potential antitumor plasma treatments vivo
cdna crassostrea gigas hsp cloned rapid amplification cdna race techniques used full length hsp cdna consisting terminal untranslated region utr terminal utr open reading frame ore encoding deduced amino acids hsp cdna contained hsp family signatures atp gtp binding site motif tetrapeptide ggmp conserved carboxyl terminal region eevd terminal deduced amino acid sequence blast analysis revealed hsp gene extreme similarity gigas northern blotting used examine expression hsp mrna gill tissue oyster obtained surface middle bottom layers hsp mrna observed samples taken middle bottom layers september february samples surface layer find signal intensity hsp mrna transcript consequently seems oyster occurring middle bottom layer stressed period summer winter associated massive mortality gamak bay
past years heralded fascinating developments field ctla biology ctla protein critical negative regulator cell immunity absence provokes severe lymphoproliferative disease surprising twist generation mixed bone marrow chimeric mice revealed ctla predominantly functions cell extrinsic manner suggesting ctla expressed one cell modify behaviour another cell followed demonstration ctla highly expressed regulatory cells contribute suppressive activity line cell extrinsic function increasing evidence indicates ctla positive cells modify phenotype antigen presenting cells apc thereby regulating priming naive cells notably ctla able regulate expression costimulatory ligands apc via process trans endocytosis identification patients mutations ctla gene provided opportunity study contribution ctla treg function immune regulation human immune system finally become apparent ctla also plays role controlling humoral immunity via regulation driven follicular helper cell differentiation recent german society immunology congress discussed contributions lab unfolding ctla story context work others field despite enormous clinical potential associated modulation ctla pathway including use soluble ctla molecules autoimmune settings blocking antibodies cancer clear still much learn important pathway european federation immunological societies published elsevier rights reserved
neuroscience molecular biology generating large datasets past years reshaping research conducted wake open data sharing singled major challenge future research conducted comparative study citations data publications fields showing average publication tagged data related term ncbi mesh medical subject headings curators achieves significantly larger citation impact average either field introduce new metric data article citation index dac index identify prolific authors among data related publications study fully reproducible executable rmd markdown script together citation datasets hope results encourage authors openly publish data
purpose asian populations around frequency reduced function allele cypd compared caucasian populations wide range cypd enzyme activities subjects cypd variant big concern clinical practice quantitative analysis measuring impact cypd enzyme activity result one cypd allele two cypd alleles reported large asian populations methods total healthy chinese subjects genotyped cypd polymerase chain reaction direct dna sequencing total subjects cypd cypd cypd cypd phenotyped cypd using dextromethorphan probe drug metabolic ratios calculated ratio parent drug metabolite urine plasma saliva sample type results urinary plasma salivary mrs increased successively subjects cypd normal metabolizer group homozygous cypd decreased cypd enzyme activity heterozygous cypd urinary plasma salivary mrs highly correlated conclusion normal metabolizer group calls detailed classification activity score system could accurately predict enzyme activity grouping number genotypes single phenotype group single point plasma samples saliva samples could used alternative phenotyping methods clinical convenience
duckweed used bioremediation selenium polluted water capability absorbing minerals growing media however presence media may affect growth duckweed landoltia punctata studied changes chemical biological properties presence media duckweed cultivated day period different initial concentrations selenite naseo moll growth rate organic total contents activity antioxidant enzymes photosynthetic pigment contents chlorophyll fluorescence ojip transient ultrastructure duckweed monitored experiment results shown low concentrations moll promoted growth punctata inhibited lipid peroxidation substantial increases duckweed growth rate organic content duckweed observed low concentrations anti oxidative effect occurred likely increases guaiacol peroxidase catalase superoxide dismutase activities well amount photosynthetic pigments however negative impact duckweed observed punctata exposed high concentrations moll duckweed growth inhibited selenium results indicate punctata used bioremediation selenium polluted water concentration moll
recent years tannase gained increasing interest mainly potential applications one important functions tannic acid hydrolase release gallic acid complex tannins aim study determine dynamic changes tannase activity depending carbon source culture medium extracellular intracellular tannase activity analysis carried use spectrophotometric analysis confirmed capillary electrophoresis cultures white rot fungi phellinus pini fomes fomentarius tyromyces pubescens inducible potential rapeseed meal activity tannin acyl hydrolase confirmed days culturing different effects tested compounds stimulation tannase activity selected fungal strains demonstrated concluded rapeseed meal best inducer tannase activity case pini however highest concentrations observed stimulation cultures fomentarius pubescens international union biochemistry molecular biology inc
tertiary structure proteins determines functions therefore predicting protein tertiary structure based primary amino acid sequence long time important challenging subject biochemistry molecular biology biophysics one popular protein structure prediction methods called hydrophobic polar model based observation polar environment hydrophobic amino acids core molecule contact polar amino acids contact polar environment study present new mixed integer programming formulation exact algorithm two heuristic algorithms solve protein folding problem stated combinatorial optimization problem simple cubic lattice results computational runs set benchmarks favorably compared known algorithms solving lattice model genetic algorithms ant colony optimization algorithm monte carlo algorithm
objectives determine fitness effects various mobile genetic elements mges enterococcus faecium enterococcus faecalis newly acquired also tested hypothesis biological cost vancomycin resistance plasmids could mitigated continuous growth laboratory methods different mges including two conjugative transposons ctns family pathogenicity island pai vancomycin resistance vana plasmids various origins classes transferred common ancestral faecium faecalis strains conjugation assays experimentally evolved vana plasmids transconjugants characterized pfge nuclease assays southern blotting hybridization analyses single specific primer pcr performed determine target sites insertion ctns fitness costs various mges faecium faecalis estimated head head competition experiments evolved populations generated serial transfer assays results biological cost newly acquired pai two ctns host insertion locus dependent newly acquired vana plasmids may severely reduce host fitness costs rapidly mitigated generations continuous growth absence antibiotic selection conclusions newly acquired mges may impose immediate biological cost faecium however demonstrated vana plasmids initial costs mge carriage may mitigated growth beneficial plasmid host association rapidly emerge
although herpesviruses cyprinid herpesvirus cyhv establish lifelong latent infections little known latency conditions farmed koi populations china used nested polymerase chain reaction targeting gene indirect antibody elisa screen asymptomatic fish obtained southern china evidence cyhv infection cyhv dna could detected either peripheral blood leukocytes gills asymptomatic koi koi sera contain anti cyhv antibodies however samples elisa positive providing evidence prior cyhv infections findings suggest koi may survive cyhv infections become virus carriers
purpose review microbiome continues demonstrate important role immune metabolic programming review focus mechanistic implications recent findings diabetes pathogenesis treatment recent findings multiple techniques developing specify microbiome time new insights emerged local interactions microbial products human development new findings demonstrate key bacteria products result programming diabetes modulating regulatory lymphocytes within outside intestine role bacterial metagenome programming human metabolism also revealed new insights turn findings suggest framework microbiome may modified change course diabetes summary microbiome key regulator metabolism immunity specific bacteria secreted products known program regulatory cell development may change course diabetes bacterial genomics demonstrating important modifiable roles bacterial gene products metabolism understanding symbiotic relationship provide new avenues intervention diabetes
micrornas mirnas small non coding rnas involved fine tuning gene regulation antisense oligonucleotides ons promising tools anti mirna anti mir agents toward therapeutic applications uncover mirna function anti mir ons include methyl ome cationic peptide nucleic acids like pna locked nucleic acid lna based anti mirs lna dna lna ome northern blotting widely used robust technique detect mirnas however mirna quantification presence anti mir ons proved challenging due detection artifacts led poor understanding mirna fate upon anti mir binding show anti mir bound mir prevent mirna properly precipitated purified rna fraction using standard rna extraction protocol tri reagent yielding rna extract reflect real cellular levels mirna increase numbers equivalents isopropanol precipitation step leads full recovery targeted mirna back purified rna extract following improved protocol demonstrate northern blotting conjunction pna decoy strategy use high denaturing page high affinity anti mirs pna lna dna lna ome sequester mir without causing mirna degradation mir targeting lower affinity anti mir ome seems promote degradation mirna technical issues explored work relevance hybridization based techniques mirna quantification presence anti mir ons
overlapping sense antisense rnas transcribed opposite directions genomic locus common vertebrates impact antisense transcription gene regulation cell biology largely unknown show sense antisense rnas evolutionarily conserved phosphate transporter gene slcaa coexpressed short time window embryonic development zebrafish hours postfertilization hpf address mechanism coexpressed sense antisense transcripts processed injected sense antisense rnas various combinations xenopus oocytes cytoplasm rnas stable whatever combination expressed nucleus coinjected sense antisense transcripts degraded short rnas similar bases within homologous transcript toad another isoform slcab zebrafish failed trigger processing oocytes primed nuclear sense antisense rna coinjections reporter rna rapidly degraded produced evidence observed processing complementary transcripts restricted xenopus oocytes slca related short rnas detected zebrafish embryos northern blotting signals observed stages showed coexpression sense antisense transcripts remarkably strand specific probes revealed orientation short rnas developmentally regulated addition rna zebrafish embryos hpf able induce degradation reporter constructs xenopus oocytes findings may give important clues understanding physiological role widespread antisense transcription
pancreatic lipase potential therapeutic target treat diet induced obesity humans obesity related diseases continue global problem despite intensive research finding potential inhibitors compounds introduced clinical studies work new chemical scaffold indene tetrol proposed using knowledge based approach inhibitors derived modifying functional groups different positions scaffold explore binding affinity interactions ligands protein cdocker autodock programs used molecular docking studies analyzing results rigid flexible docking algorithms inhibitors selected based different properties high predicted binding affinities analysis three inhibitors different moieties placed different functional groups scaffold characterize structural rationales inhibitory activities compounds molecular dynamics simulations performed nsec shown simulations two structural fragments indene indole inhibitor treated isosteric structures position binding cleft replaced taking account information two lines inhibitors developed line based different core scaffold indene indole international union biochemistry molecular biology inc volume number pages
actinobacteria gram positive bacteria commonly found soil freshwater marine ecosystems investigation bias codon usages ninety actinobacterial genomes analyzed estimating different indices codon bias effective number codons scuo synonymous codon usage order rscu relative synonymous codon usage well sequence patterns codon contexts results revealed several characteristic features codon usage actinobacteria follows ending codons used frequently comparison ending codons direct relationship content use specific amino acids alanine proline glycine inverse relationship content estimates low scuo value genes gcc gcc gcc ggc gcc gag cuc gac frequent context sequences among codons study highlights fact actinobacteria extreme content codon bias driven mutation rather natural selection traits like aerobicity associated effective natural selection therefore low content low codon bias demonstrating role mutational bias translational selection shaping habitat phenotype actinobacterial species institut pasteur published elsevier masson sas rights reserved
immune checkpoint inhibitors ici represent new revolutionary weapon armamentarium anti cancer therapies side effects new agents represent new challenge oncologists usually unpredictable sometimes life threatening managed rapidly adequately frequent side effects dermatologic usually low grade side effects consequently easily manageable rash pruritus vitiligo frequent dermatologic side effects aimed review describe first dermatologic side effects ici according subtype ici combination therapies clinical trials report rare case reports dermatologic side effects finally present management algorithm side effects
suggested chemicals specifically chemical interactions involved causative agents deployment related illnesses unfortunately hypothesis proven difficult test toxicological investigations deployment related chemicals usually carried surrogate animals difficult extrapolate humans parts problem definition variation within human populations development methods designating groups individuals significantly greater risk carried surrogate animals data must derived humans relatively recent availability human cell fractions microsomes cytosol etc human cells primary hepatocytes recombinant human enzymes isoforms polymorphic variants enabled significant start made developing human data needed initial studies examined human metabolism cytochrome phase enzymes isoforms cases polymorphic variants compounds chlorpyrifos carbaryl deet permethrin pyridostigmine bromide lesser extent chemicals chemical use classes including solvents jet fuel components sulfur mustard metabolites number interactions metabolic level described respect xenobiotics endogenous metabolites probably dramatic seen ability chlorpyrifos inhibit metabolism xenobiotics carbaryl deet also inhibit metabolism steroid hormones
retroviral replication proceeds formation provirus integrated dna copy viral rna genome linear cdna product reverse transcription integration substrate two different integrase activities processing dna strand transfer required provirus formation integrase nicks cdna ends adjacent phylogenetically conserved dinucleotides processing nuclear entry locating suitable chromatin acceptor site integrase joins recessed ohs phosphates double stranded staggered cut dna target integrase functions context large nucleoprotein complex called preintegration complex pic pics analyzed determine levels integrase processing dna strand transfer activities occur acute virus infection denatured cdna end regions monitored indirect end labeling measure extent processing native pics efficiently integrate viral cdna exogenously added target dna vitro southern blotting nested pcr assays used quantity resultant dna strand transfer activity study details hiv infection pic extraction partial purification quantitative analyses integrase processing dna strand transfer activities elsevier inc rights reserved
extensive research performed determine effect freezing protocol cryopreservation agents viability adipose tissue derived stromal stem cells ascs well cells unfortunately conclusion one may draw decades research utilizing fundamentally similar cryopreservation techniques barrier exists precludes full recovery hypothesize agents capable inducing subset heat shock proteins hsps chaperones reduce intrinsic barriers post thaw recovery ascs ascs exposed degrees upregulate hsps temporal hsp expression profile postheat shock determined performing quantitative polymerase chain reaction pcr western blotting assays expression levels hsp hsp found maximum heat shock whereas hsp hsp remain unchanged heat shocked ascs cryopreserved maximal hsps expression exhibited increased post thaw viability nonheat shocked samples histochemical staining quantitative reverse transcription pcr indicated asc differentiation potential retained thus suggesting upregulation hsps freezing insult beneficial ascs potential alternative use harmful cryoprotective agents
citizen science approach implemented laboratory practices genetics university oviedo related engaging topic food control real samples food products consumed students home students samplers employed teaching material three different courses genetics academic year experimental methods food production mbta master level applied molecular biology bma conservation genetics breeding comge bachelor degree level molecular genetics based pcr amplification dna markers employed species identification seafood products comge mbta detection genetically modified maize nine products bma total six seafood products incorrectly labeled two undeclared maize found postlaboratory survey applied assessing efficacy approach improving motivation laboratory practices genetics results confirmed students worked samples local markets significantly motivated better evaluated genetic laboratory practices control students chi results suggest citizen science approaches could useful improving teaching genetics universities also incorporate students citizens active agents food control international union biochemistry molecular biology
male neonate presented charge syndrome multiorgan genetic disorder involving coloboma eyes congenital heart defects nasal choanal atresia growth development retardation genitourinary disorders ear anomalies deafness moreover rare case vascular ring consisting right aortic arch retroesophageal brachiocephalic artery combined coarctation mid aortic arch underwent vascular ring aortic arch repair institution knowledge documented case exceedingly rare type aortic arch anomaly combined aortic arch obstruction moreover first confirmed case combined disorders occurring charge syndrome report describes truly rare case reveals limitations echocardiography detecting complex aortic arch anomalies illustrating benefits advanced imaging prior surgical intervention
fusarium head blight fhb fusarium seedling blight fsb wheat caused fusarium pathogens devastating diseases worldwide report expression rna interference rnai sequences derived essential fusarium graminearum virulence gene chitin synthase chs method enhance resistance wheat plants fungal pathogens deletion chsb lethal disruption chs gene family members generated knockout mutants diverse impacts comparative expression analyses revealed among chs gene family members chsb highest expression levels colonization wheat three hairpin rnai constructs corresponding different regions chsb found silence chsb transgenic strains expression three rnai constructs two independent elite wheat cultivar transgenic lines conferred high levels stable consistent resistance combined type resistance fhb fsb throughout generations confocal microscopy revealed profoundly restricted mycelia infected transgenic wheat plants presence three specific short interfering rnas transgenic wheat plants confirmed northern blotting rnas efficiently regulated chsb colonizing fusarium pathogens wheat seedlings spikes results demonstrate host induced gene silencing essential fungal chitin synthase gene effective strategy enhancing resistance crop plants field test conditions
purpose reviewprimary cilia become important organelles implicated embryonic development organogenesis health diseases although many studies cell biology focused changes ciliary length ciliogenesis common readout evaluating ciliary function intracellular calcium recent findingsrecent tools allowed examine intracellular calcium precise locations cilioplasm cytoplasm advances calcium imaging also allowed identify cilia respond particular stimuli furthermore direct electrophysiological measurement ionic currents within cilium provided wealth information understanding sensory roles primary cilia summarycalcium imaging direct measurement calcium currents demonstrate primary cilia sensory organelles house several types functional calcium channels although intracellular calcium allows functional readout primary cilia discussions relative contributions several channel types begun perhaps calcium channels required necessary differentiate stimuli different microenvironments
two forms human cellular retinol binding protein type crbp hcrbp purified small intestine three step purification procedure terminal sequence crbp determined residues found single residue difference compared terminal sequence rat amino acid change maintained charge hcrbp blocked terminus presumably acetylation initial threonine residue previously established crbp rat blockage affect binding properties protein ability pure hcrbp bind trans retinol retinal retinoic acid examined competitive binding assay compared binding specificity pure human cellular retinol binding protein hcrbp retinoic acid compete retinol binding either protein retinal competed retinol binding hcrbp hcrbp consistent observed homologous proteins rats polyclonal antiserum hcrbp produced recognized forms hcrbp western blotting ria react hcrbp distribution hcrbp determined jejunum higher concentrations hcrbp observed proximal portion compared distal portion although concentrations varied individual intestinal samples concentrations total mucosal protein observed samples results provide tools investigation role hcrbp suggest previous results rats important aspect relevant human metabolism vitamin
backgroundthere studies association nutrient intake telomere length may reflect cumulative oxidative stress indicate biological ageing present study evaluated longitudinal associations consumption micronutrients including antioxidant nutrients vitamins involved one carbon transfer pathways leukocyte telomere length ltl methodsthe study included middle aged older korean men women age range baseline years population based cohort collected dietary information baseline using semiquantitative food frequency questionnaire june january assessed consumption micronutrients including vitamins folate well calcium phosphorus potassium iron zinc measured ltl using real time polymerase chain reaction year follow examination february november resultsin multiple regression model adjusted potential confounders ltl positively associated consumption vitamin folate potassium participants age stratified analysis association consumption vitamin folate potassium ltl significant among participants aged years conclusionsour findings suggest earlier consumption vitamin folate potassium abundant fruits vegetables delay biological ageing middle aged older adults
background aims connective tissue growth factor ctgf ccn implicated pathogenesis hepatic fibrosis suggested downstream mediator fibrogenic master cytokine tgf beta methods investigated effect tgf beta ctgf ccn expression cultured rat hepatic stellate cells hepatocytes means western northern blotting immunocytochemistry reporter gene analysis metabolic labelling results found expression ctgf ccn hepatic stellate cells marginally stimulated tgf beta constitutively active type tgf beta receptor independent smad phosphorylation iii reduced tgf beta antagonists alk receptor inhibitors upregulated transdifferentiation myofibroblasts culture however expression secretion ctgf ccn cultured hepatocytes increased spontaneously culture strongly stimulated tgf beta bile duct ligated ccl treated rat livers strong ctgf ccn expression hepatocytes noticed endothelin stimulated ctgf ccn expression stellate cells hepatocytes pathway specific signalling inhibitors point involvement non smad signalling cascades contribution ctgf ccn regulation different cell types conclusions results reveal relevant interrelation tgf beta function ctgf ccn expression hepatic stellate cells contrast hepatocytes european association study liver published elsevier rights reserved
aim present study understand context psychological impact patients diagnosed hereditary hemorrhagic telangiectasia hht semi structured interviews conducted patients affected hht transcripts analyzed using interpretative phenomenological analysis results study allowed propose new hypothesis explain delay diagnosis trivialization symptoms associated hht moreover results showed genetic diagnosis hht results emotional shock uncertainty future worry one children parents confronted dilemma facing reality diagnosis delaying dealing diagnosis disease onset family personal perceptions disease influenced delay diagnosis also emotional behavioral reactions patients following genetic diagnosis
dendritic cells dcs exposed tumor antigens followed treatment polarizing differentiation signals paved way development based cancer vaccines critical parameters assessment optimal functional state dcs prediction vaccine potency activated dcs past based measurements differentiation surface markers like hla cid ccr level secreted cytokines like interleukin however level markers provide complete picture phenotype may insufficient prediction clinical outcome based therapy therefore looked additional biomarkers investigating differential expression micrornas mirnas mature dcs relative immature dcs microarray based screening revealed mirnas differentially expressed two phenotypes four mirnas hsa mir hsa mir hsa mir hsa mir validated real time polymerase chain reaction northern blotting matured dcs individual donors divided two groups highly less differentiated dcs respectively pronounced difference level mirna induction two groups observed suggesting quantitative evaluation selected mirnas potentially predict immunogenicity vaccines american society histocompatibility immunogenetics published elsevier inc rights reserved
importance cell receptor tcr repertoire diversity highlighted murine models immunodeficiency many human pathologies however true extent tcr diversity diversity varies health disease poorly understood previous issue european journal immunology lossius eur immunol dissected composition tcr repertoire context multiple sclerosis using high throughput sequencing tcr beta chains cerebrospinal fluid samples blood authors demonstrated tcr repertoire csf largely distinct blood enriched ebv reactive cells patients studies kind long hindered technical limitations remain scarce literature however tcr sequencing methodologies progressing apace undoubtedly shed light genetic basis cell responses ontogeny cell mediated diseases
microrna mirna highly conserved class small noncoding rna nucleotides length function specific manner post transcriptionally regulate gene expression organisms tissue mirna expression studies discovered myriad functions mirnas various aspects role mirnas chicken ovarian tissue days age hitherto reported study performed first mirna analysis ovarian tissues chickens low high rates egg production using high throughput sequencing comparing low rate egg production chickens high rate egg production chickens significantly differentially expressed mirnas found including known six novel mirnas found known mirnas involved mainly pathways reproduction regulation steroid hormone biosynthesis dopaminergic synapse additionally expression profiling six randomly selected differentially regulated mirnas validated quantitative real time polymerase chain reaction qpcr mirnas gga mir gga mir gga mir reported regulate processes proliferation cell cycle apoptosis metastasis expressed differentially ovaries chickens high rates egg production suggesting mirnas important role ovary development reproductive management chicken furthermore uncovered significantly regulated mirna gga mir ubiquitous reproductionregulation related pathways mirna may play special central role reproductive management chicken needs studied confirmation
age associated decline adult stem cell function contributes physiological failure homeostasis aging proteasome plays key role maintenance proteostasis failure associated various biological phenomena including senescence aging although stem cell biology attracted intense attention role proteasome sternness age dependent deterioration remains largely unclear employing wharton jelly adipose derived human adult mesenchymal stem cells hmscs reveal significant age related decline proteasome content peptidase activities accompanied alterations proteasomal complexes additionally show senescence concomitant failure proteostasis negatively affects sternness remarkably loss proliferative capacity sternness hmscs counteracted proteasome activation mechanistic level demonstrate first time oct binds promoter region beta beta proteasome subunits thus possibly regulates expression firm understanding mechanisms regulating proteostasis stem cells pave way innovative stem cell based interventions improve healthspan lifespan
even though ibuprofen one studied pharmaceutical aquatic environment still lack information fate generation different transformation products along wastewater treatment plants wwtps ibuprofen biotransformation products generated human metabolism microorganisms present wwtps natural waters soils sediments increase probability find environment work presence ibuprofen main metabolites ibuprofen carboxylic acid cbx ibu hydroxylated ibuprofen ibu hydroxylated ibuprofen ibu monitored quantitatively along biodegradation processes occurring different batch activated sludge bas experiments different working conditions total ibuprofen removal achieved almost experiments related part formation metabolites mentioned another ibuprofen metabolite dihydroxy ibuprofen detected bas experiments first time metabolites ibu ibu remained solution end ibuprofen biodegradation experiments whereas cbx ibu disappeared faster hydroxylated metabolites addition also biodegradation ibu ibu cbx ibu evaluated batch experiments cbx ibu removal occurred highest rate followed ibu ibu ibu exhibited lowest removal rate finally ibuprofen ibuprofen metabolites monitored sewage natural water samples found higher levels expected maximum concentration influent wastewater samples ibu ibu cbx ibu ibu respectively whereas maximum levels effluent wastewater samples ibu ibu cbx ibu ibu respectively high levels compounds also found river samples particular cbx ibu detected elsevier rights reserved
advances membrane cell biology hampered relatively high proportion proteins known function proteins largely entirely devoid structurally significant domain annotations structural bioinformaticians developed profile profile tools hhsearch online version called hhpred detect remote homologies missed tools used annotate databases applied hhsearch study single structural fold single model organism proof principle entire clan protein domains sharing pleckstrin homology domain fold yeast systematic application hhsearch accurately identified known like domains also predicted new domains yeast proteins many implicated intracellular traffic one vpsp confirmed functional importance predicted like domain even though predictions require considerable work corroborated useful first steps hhsearch applied widely particularly across entire proteomes model organisms significantly improve database annotations
anaphylatoxin constitutes powerful fragment generated complement system activation interestingly complement active fragment also important mediator tissue regeneration recent findings suggest could initial signal orchestrating pulp nerve sprouting beneath carious injury critical step dentin pulp regeneration indeed expression activation active receptor car injured pulp fibroblasts controls direction neurite outgrowth toward carious injuries modulating secretion brain derived neurotrophic factor bdnf pulp fibroblasts second receptor also cloned received much less attention interaction ligand induces signaling work aims investigate role pulp nerve regeneration secretion bdnf pulp fibroblasts sites carious injury using fluorescence immunostaining human tooth sections vivo primary human pulp fibroblasts vitro authors reveal car expressed pulp fibroblasts lipoteichoic acid lta stimulation moreover silencing significantly increases bdnf secretion lta stimulated pulp fibroblasts finally analysis subcellular distribution car indicates negative regulation bdnf secretion correlates car activation subsequent intracellular localization overall current study sheds light mechanism pulp nerve regeneration identifying negative regulator bdnf secretion pulp fibroblasts carious teeth knowledge significantly increases understanding functional mechanism linking car pulp nerve regeneration may useful future dentin pulp engineering strategies target fibroblast induce pulp innervation
non small cell lung cancer nsclc represents one common aggressive cancers worldwide interaction plays important roles cancer immunology expression discovered nsclc tumor cells since follicular helper tfh cells characteristic high expression therefore investigated inflammatory status tfh nsclc cxcr cell population examined define tfh cells data showed frequency tfh cells peripheral blood significantly lower nsclc patients healthy controls primary metastatic tumors infiltration tfh cells observed suggesting participated antitumor immunity nsclc patients compared cell subsets tfh cells peripheral blood resected tumors nsclc patients presented elevated apoptosis reduced proliferation capacity tfh cells nsclc patients also less effective downregulating igd upregulating expression naive cells induced less igm igg iga secretion healthy controls found survival time date surgery positively correlated frequency tumor infiltrating tfh cells nsclc subjects overall results study demonstrated tfh cells likely involved antitumor immunity associated better clinical outcomes suffered strong immunosuppression nsclc enhancing tfh cell activity therefore represents potential therapeutic strategy nsclc elsevier rights reserved
gain insight comparative function stress response hsps insects three hsp cdnas cloned fat body beet armyworm spodoptera exigua lepidoptera noctuidae sexhsp sexhsp sexhsp cdnas encoding protein amino acids respectively northern blotting revealed three sexhsp mrnas expressed fat body mid gut spermary tracheae sexhsp sexhspand sexhsp mrnas expressed fat body whole body different levels different developmental stages three sexhsp transcripts highly expressed fat body first day fifth instar larvae fourth seventh days pupa stage whole body initial stages larvae heat cold shock conditions sexhsp sexhsp mainly functioned heat shock cooling sexhsp also function recovery stage sexhsp important functions short term heat shock recovery well long term cooling results revealed long term shocking affect sexhsp sexhsp expression long term cooling influence sexhsp expression recovery stage published elsevier inc
signal transducer activator transcription stat hexokinase involved hepatocellular carcinoma hcc deregulation cellular energetics involving increase glycolysis characteristic hcc study examined whether stat regulates hcc glycolysis pathway hcc cells human hcc cell lines hepg hepb cells transfected pcdna egfp stat stat sirna sirna respectively treated rapamycin inhibitor mammalian target rapamycin mtor effects stat expression cell glycolysis determined stat expressions evaluated real time polymerase chain reaction western blotting level glycolysis metabolism assessed determination glucose consumption lactate production results showed transfection hepg hepb cells pcdna egfp stat significantly increased stat mrna protein expression glucose consumption lactate production mrna protein expression however transfection hepg hepb cells stat sirna significantly decreased glucose consumption lactate production mrna protein expression transfection hepg hepb cells sirna significantly decreased glucose consumption lactate production treatment hepg hepb cells rapamycin significantly reduced mrna protein expression glucose consumption lactate production results suggest mtor stat pathway involved glycolysis hcc cells stat may regulate hcc glycolysis pathway providing potential multiple therapeutic targets intervention glycolysis treatment hcc
life cycle seaweed laminaria japonica involves generation alternation diploid sporophyte haploid gametophte expression foreign genes sporophte proved research recombinant expression gametophyte investigated particle bombardment gene encoding recombinant human tissue type plasminogen activator reteplase thrombolytic agent acute myocardial infarction ami transgenic gametophytes selected resistance herbicide phosphiothricin ppt proliferated established bubble column photo bioreactor according results quantitative elisa southern blotting fibrin agarose plate assay fapa bioactivity showed gene integrated genome gametophytes japonica expression product showed expected bioactivity implying proper post transcript modification haploid gametophyte
nonribosomal peptide synthetases modular enzymes catalyze synthesis important peptide products variety standard non proteinogenic amino acid substrates within single module multiple catalytic domains responsible incorporation single residue amino acid activated covalently attached integrated carrier protein domain substrates intermediates delivered neighboring catalytic domains peptide bond formation modules chemical modification final module peptide delivered terminal thioesterase domain catalyzes release peptide product multi domain modular architecture raises questions structural features enable assembly line synthesis efficient manner structures core component domains determined demonstrate insights catalytic activity recently multi domain structures determined providing clues features enzyme systems govern functional interaction multiple domains chapter describes structures nrps proteins strategies used assist structural studies dynamic proteins including careful consideration domain boundaries generation truncated proteins use mechanism based inhibitors trap interactions catalytic carrier protein domains
tuberculosis public health problem recent years change epidemiological profile tuberculosis diagnosis tuberculosis based clinical radiological arguments confirmation bacteriological histological culture remains gold standard technological progress especially molecular biology provides clinician new means tuberculosis diagnostics elsevier masson sas rights reserved
rostral migratory stream rms viewed glia enriched conduit forward migrating neuroblasts chemorepulsive signals control pace forward migration demonstrate existence scaffold neurons receive synaptic inputs within rat mouse human fetal rms equivalents neurons express secretagogin sensor protein execute annexin dependent externalization matrix metalloprotease mmp reconfiguring extracellular matrix locally mouse genetics combined pharmacological probing vivo vitro demonstrate mmp externalization occurs demand loss slows neuroblast migration loss function particularly remarkable upon injury olfactory bulb cumulatively identify signaling cascade provokes structural remodeling rms recruitment mmp previously unrecognized neuronal constituent given life long presence secretagogin containing neurons human mechanism might exploited therapeutic benefit rescue strategies
defects glycinergic synaptic transmission humans cattle rodents result exaggerated startle reflex hypertonia response either acoustic tactile stimuli molecular genetic studies determined mutations genes encoding postsynaptic glycine receptor glyr alpha beta subunits glra glrb presynaptic glycine transporter glyt slca major cause disorders report first genetically confirmed canine cases startle disease litter seven irish wolfhounds identified two puppies developed muscle stiffness tremor response handling although sequencing glra glrb reveal pathogenic mutations analysis slca revealed homozygous microdeletion encompassing exons affected animals results loss part large cytoplasmic terminus subsequent transmembrane domains due frameshift genetic lesion confirmed defining deletion breakpoint southern blotting multiplex ligation dependent probe amplification mlpa analysis enabled development rapid genotyping test revealed heterozygosity deletion dam sire three siblings confirming recessive inheritance wider testing related animals identified total carriers slca deletion well non carrier animals findings inform future breeding strategies enable rational pharmacotherapy new canine disorder elsevier inc rights reserved
background struma ovarii rare form ovarian mature teratoma thyroid tissue predominant element rarity differential diagnosis benign malignant clearly defined believed malignant transformation similar molecular features prognosis corresponds malignant tumors originating thyroid case presentation report year old woman bilateral ovarian cysts incidentally detected ultrasound first trimester pregnancy four months delivery healthy child without complication admitted hospital acute abdominal pain laparoscopic left adnexectomy performed initially regional hospital right cystectomy done later specialized clinic intraoperative frozen section final pathology revealed cyst left ovary composed mature teratomatous elements normal thyroid tissue non encapsulated focus follicular variant papillary thyroid carcinoma ptc normal cancerous thyroid tissues tested braf ras mutations direct sequencing ret ptc rearrangements pcr southern blotting kras codon mutation ggt gtt transversion corresponding gly val amino acid change identified absence genetic alterations commonly found ptc conclusion best knowledge first time mutation described papillary thyroid carcinoma arising struma ovarii finding provides evidence even rare mutations specific ptc may occur tumors molecular testing may useful adjunct common differential diagnostic methods thyroid malignancy
three metabolites hydroxyibuprofen ibu carboxyibuprofen ibu carboxyhydratropic acid also known human metabolism ibuprofen could identified biodegradation experiments identification based mass spectra comparison literature data detection performed selective measurements ion trap online methylation ibuprofen ibu ibu ibu could detected signal noise ratio concentration nmol nmol degradation experiments biofilm reactors bfr batch experiments activated sludge bas reveal ibu major metabolite oxic conditions anoxic conditions ibu found oxic anoxic conditions almost bas metabolites together account initial concentration ibu
background traumatic brain injury tbi triggers immediate primary long term secondary tissue damages secondary damages last hours days even lifetime secondary damages implicate several mechanisms including influence inflammatory mediators mainly cytokines excitability ion channels however studies explore effects inflammatory cytokines voltage gated sodium channels vgscs excitability distal intact neurons methods mixed cultures mouse cortical astrocytes neurons subjected mechanical injury trauma mimic tbi vitro expression various cytokines cultures measured real time polymerase chain reaction enzyme linked immunosorbent assay trauma conditioned medium without brain derived neurotrophic factor bdnf added mouse primary cortical neurons mimic combined effects multiple inflammatory cytokines vgscs spike behaviors distal intact neurons examined whole cell patch clamp recordings results mechanical injury mixed cortical neuron astrocyte cultures significantly increased expression levels multiple cytokines including interleukin beta tumor necrosis factor monocyte chemoattractant protein chemokine motif ligand transforming growth factor beta injury incubation trauma conditioned medium increased functional vgscs neuronal membranes currents enhanced vgscs almost completely abolished bdnf reinforcement currents also reduced dose dependent manner bdnf also significantly reversed reduced neuronal cell viability induced medium conditioned trauma conditioned medium significantly increased spike frequency spike threshold conclusions tbi combined effect inflammatory cytokines directly involved vgsc current excitability dysfunction distal intact neurons bdnf may partly exert neuroprotective effects maintaining balance vgsc function distal intact neurons
allergen immunotherapy disease modifying treatment allergic diseases sublingual immunotherapy slit liquid tablet form used clinicians europe years recently gained popularity approval united states food drug administration approved slit tablets treatment allergic rhinitis without allergic conjunctivitis immunotherapy treatment strategies polysensitized patient vary united states europe variation hinges upon whether polysensitized patient truly polyallergic polysensitization positive response allergens skin prick testing vitro specific ige testing polyallergy symptomatic clinical response allergens review discuss use slit united states focus treating polyallergic patient slit american academy allergy asthma immunology allergy clin immunol pract
objective evaluate trends usage dengue virus diagnostics pakistan methods retrospective study conducted aga khan university hospital karachi comprised data specimens tested dengue virus january december test dengue virus ribonucleic acid reverse transcription polymerase chain reaction dengue virus antigen immunochromatic assay human immunoglobulin dengue virus enzyme linked immunosorbent assay reviewed spss used data analysis results overall specimens tested dengue virus positive among reported positive samples diagnosed immunoglobulin based method nonstructural protein antigen samples tested positive immunoglobulinm antigen polymerase chain reaction trend continued dengue positive tests determined antigen testing immunoglobulin polymerase chain reaction conclusion shift usage direct virus identification rapid diagnosis dengue virus compared host immunoglobulin testing
myeloperoxidase mpo lysosomal heme enzyme present azurophilic granules human neutrophils monocytes critical element human innate immune system exerting antimicrobial effects disulfide bridged dimer monomer containing light heavy polypeptide biosynthesis intracellular transport includes several posttranslational processing steps contrast mpo recombinantly produced chinese hamster ovary cell lines monomeric partially unprocessed contains terminal propeptide prompo mirrors second form mpo constitutively secreted normal bone marrow myeloid precursors order clarify impact posttranslational modifications structural integrity enzymology two forms human myeloperoxidase undertaken investigation conformational thermal stability leukocyte mpo recombinant prompo using complementary biophysical techniques including vis circular dichroism fluorescence spectroscopy well differential scanning calorimetry mature leucocyte mpo exhibits peculiar high chemical thermal stability oxidizing conditions significantly destabilized addition dithiothreitol unfolding secondary tertiary structure occurs concomitantly denaturation heme cavity reflecting role three mpo typical heme protein linkages six intra chain disulfides structural integrity bridging terminal regions protein recombinant monomeric prompo follows similar unfolding pattern lower conformational thermal stability spectroscopic thermodynamic data unfolding discussed respect known three dimensional structure leukocyte mpo well known physiological roles elsevier rights reserved
consider diffusing particle randomly switches conformational state motivated various scenarios cell biology suppose diffusion coefficient depends conformational state particle pass series gates domain particular conformational state develop probabilistic methods analyze case diffusion temporal heterogeneity use methods calculate expected residence time portions domain absorption boundary find several new phenomena seen recent studies diffusion spatial heterogeneity counterintuitive particular expected residence times non monotonic functions initial distance absorbing boundary diffusion coefficients focus one dimensional intervals show analysis extended spherically symmetric dimensional domains
background unclear whether allergen immunotherapy ait safely initiated pollen season coseasonal initiation csi potential increased risk systemic allergic reactions objective systematically review publications reporting safety subcutaneous immunotherapy scit sublingual immunotherapy slit csi validate invalidate perception increased safety risk methods pubmed embase ovid literatura latino americana ciencias saude lilacs cochrane library databases searched without limits studies design reporting scit slit csi pollen allergen congress abstracts included results nineteen eligible studies identified scit subjects total double blind placebo controlled dbpc slit subjects total dbpc study characteristics safety reporting heterogeneous epinephrine administrations reported discontinuation frequencies less less scit slit csi respectively scit studies systemic allergic reaction frequency peak season csi peak season season initiation placebo scit studies serious treatment related adverse event frequency csi ranged severe aes reported slit studies systemic allergic reaction frequency ranged csi season initiation placebo overall serious treatment related aes slit csi reported severe frequency slit studies ranged csi season initiation placebo conclusions increase aes concern observed scit slit csi however additional data standardized regimens doses needed american academy allergy asthma immunology
present study investigated correlation significance hox transcript antisense rna hotair epithelial mesenchymal transition emt related factors occurrence metastasis esophageal squamous cell cancer escc progression mrna protein expression levels hotair emt related factors detected escc para carcinoma tissues using reverse transcription quantitative polymerase chain reaction western blot analysis expression levels factors correlation factors clinicopathological characteristics subsequently analyzed hotair mrna expression levels significantly higher escc compared para carcinoma tissues hotair mrna expression levels significantly higher groups lymph node involvement organ metastasis compared group without furthermore hotair expression levels demonstrated significant increasing trend well differentiated cancer poorly differentiated cancer mrna protein expression levels zinc finger protein snai snail beta catenin escc significantly higher compared para carcinoma tissues whereas cadherin mrna protein expression levels lower escc tissues compared para carcinoma tissues snail mrna protein expression levels also significantly higher groups lymph node involvement organ metastasis compared without beta catenin protein expression levels significantly higher groups lymph node involvement organ metastasis compared group without escc tissues hotair mrna expression levels positively correlated snail mrna protein expression levels negatively correlated cadherin expression levels hotair mrna expression levels also positively correlated beta catenin mrna expression levels conclusion hotair may involved carcinogenesis metastasis may induce expression emt related factors detection factors may assist early diagnosis prognostic prediction
background glioblastomas gbms heterogeneous group primary brain tumors tumors resistant therapeutic interventions invariably recur surgical resection multifunctional protein transglutaminase shown promote cell survival number different tumors also evidence may pro survival factor gbms however roles plays facilitating gbm survival proliferation yet clearly delineated methods functions often cell context specific therefore study examined ability facilitate gbm proliferation using colony formation assays ethynyl deoxyuridine edu incorporation several different gbm cell lines well neurospheres derived patient tumors representing major subtypes gbm tumors mesenchymal proneural classical maintained absence serum knockdown selective inhibitors used modulate expression activity results show plays differential roles proliferative process depending cell type gbm models plays crucial role proliferative process inhibitors highly effective reducing proliferation large subset gbm models conclusion results show plays important notoriously context specific role gbm cell biology nonetheless future studies unravel genetic fingerprints make inhibitors effective information could exploited develop inhibitors personalized gbm therapies
present study aimed evaluating telomere length blood different vascular tissues without atheroma groups subjects group atherosclerotic subjects underwent surgery atherosclerosis surgery second group subjects asymptomatic atherosclerotic carotid plaques undergo cardiovascular surgery atherosclerosis surgery third group subjects without atherosclerotic disease controls main objective determine vivo regulation telomere length situ atherosclerotic lesions total subjects mean age years studied blood arterial tissue telomere lengths determined southern blotting personal medical history diabetes hypertension cardiovascular disease dyslipidemia family medical history drug intake lifestyle evaluated entire population use questionnaire arterial segments develop atherosclerosis saphenous vein internal mammary artery longer telomere length aortic segments hand telomere length shorter aortic tissues presented atherosclerotic lesions compared corresponding tissues without atherosclerotic lesions results also suggest tissue regulation telomere size local factors likely related oxidative stress responses
background genetics explains small proportion variance body mass index population level epigenetics commonly measured gene methylation holds promise understanding obesity risk factors mechanisms methods participants adolescents aged years bmi score waist circumference score percent body fat measured saliva samples collected methylation promoter regions four candidate genes sequences lep icam crh line measured cpg sites linear regression used identify associations methylation obesity related outcomes results adjusting age sex stratified analysis three obesity related outcomes negatively associated lep methylation obese boys associations methylation genes sequences obesity related outcomes conclusions results consistent prior studies reported sex differences associations obesity related outcomes lep methylation also would expected adipose tissue source circulating leptin findings suggest saliva might acceptable tissue epigenetics studies adolescents
dna based vaccination appears promise chronic hepatitis immunotherapy although urgent need increase efficacy preclinical study evaluated therapeutic benefit cytokine ifn genes delivery dna vaccine targeting hepadnaviral proteins chronic duck hepatitis virus dhbv infection model investigated persistence replication competent virus livers apparently resolved animals dhbv carriers received four injections plasmids encoding dhbv envelope core alone delivered duck duil duck ifn duifn plasmids long term months follow viral covalently closed circular ccc dna analysed duck necropsy liver samples liver homogenates also tested vivo infectivity neonatal ducklings delivery duifn resulted significantly lower mean viremia starting week viral cccdna undetectable conventional methods livers animals immunized duil duifn respectively interestingly inoculation liver homogenates apparently resolved animals exhibiting cccdna undetectable southern blotting dhbv expression undetectable restricted hepatocytes revealed three liver homogenates transmitted high titre viremia xvge naive animals conclusion results indicate ifn gene delivery considerably enhances immunotherapeutic efficacy dna vaccine targeting hepadnaviral proteins importantly also showed livers exhibiting minute amounts hepadnaviral cccdna could induce extremely high titre infection highlighting caution taken occult hepatitis patients prevent hbv transmission liver transplantation context
haematopoietic stem progenitor cells hspcs sit top haematopoietic hierarchy fate choices need carefully controlled ensure balanced production mature blood cell types cell fate decisions made level individual cells recent technological advances measuring gene protein expression increasingly large numbers single cells rapidly adopted study normal pathological hspc function review emphasise importance combining correct computational models single cell experimental techniques illustrate integrated approaches used resolve heterogeneities populations reconstruct lineage differentiation identify regulatory relationships link molecular profiling cellular function
physical activity frequently used strategy decrease pathogenesis improve outcomes chronic pathologies metabolic cardiac diseases mice shown voluntary wheel running vwr could induce aerobic training effect may provide means exploring relationship physical activity progression pathology effect drug locomotor activity best knowledge vivo magnetic resonance imaging mri non invasive methods investigated training evaluation mice therefore proposed test mri method coupled cardiorespiratory gating system cbi mice vivo heart anatomical functional characterization trained untrained animals twenty mice either assigned week vwr program control group con wheel cage week mri scans showed increase left ventricular wall mass vwr group compared con group vivo measurements also found increase heart weight well increase oxidative enzyme activities cytochrome oxidase cox soleus addition correlations observed vivo body weight ratio cox activity soleus vivo mri wall mass body weight conclusion mouse cardiac mri methods coupled cardiorespiratory gating system sufficiently effective feasible non invasive training induced heart hypertrophy characterization may used longitudinal training level follow mouse models cardiovascular metabolic diseases
immune function chicken spleen depends different compartments red white pulps little known mechanism underlying lymphocyte homing towards different compartments present study role lymphocyte homing chicken spleen investigated lipopolysaccharide lps stimulation morphological analysis demonstrated cuboidal endothelial cells splenic sheathed capillary facilitated passage lymphocyte homing chicken spleen tissue specific adhesion molecules vascular cell adhesion molecule vcam mucosal addressin cell adhesion molecule madcam expressed sheathed capillary suggested high endothelial venule hev like vessels chicken spleen electron microscope analysis showed lps activated endothelium sheathed capillary recruited lymphocytes chicken spleen transferring carboxyfluorescein diacetate succinimidyl ester cfse labeled lymphocytes depicted rout lymphocyte homing compartments chicken spleen white pulp red pulp furthermore mrna protein levels adhesion molecular integrin beta vcam increased lps stimulation mechanism underlying integrin beta vcam lps stimulation might associated integrin linked kinase ilk dependent regulation protein kinase pkb akt study firstly shows lymphocyte homing chicken spleen lps induced inflammation results contribute knowledge comparative immunology provide better means investigating pharmacological strategies concerning possible role lymphocyte homing inflammation immunological reactions infectious disease
several cancer types outcomes improved significantly patient stratification individualization treatment based molecular characteristics histologically identical tumors potential genomics improve management distinct tumor entities exemplified egfr mutant lung cancer braf mutant melanoma targeted small molecule kinase inhibitors well recent discovery genetic determinants clinical benefit immune checkpoint blockade likely possible extend paradigmto entities protein families classes drugs advances high throughput dna rna sequencing provide accurate information somatic alterations cancer genomes decreasing costs however remains challenge integrate analyses clinical setting within nct master program standardized workflow including multidisciplinary molecular tumor board implementedand allows tumor genome sequencing within clinical context efforts may pave way molecularly stratified treatment trials optimize clinical implementation biology guided therapeutic interventions well systematic evaluation patient outcomes
microglial cells phagocytic cells central nervous system cns proposed primary component innate immune response maintain efficient cns homeostasis microglial cells activated various phases tissue repair participate various pathological conditions cns following spinal cord injury sci anoxemia key problem results tissue destruction hypoxia inducible factor alpha hif alpha may protect hypoxic cells apoptosis necrosis ischemic anoxic conditions however numerous studies revealed hypoxia upregulates hif alpha expression leading death microglial cells present study investigated alterations hif alpha expression levels mechanism autophagic cell death mediated hif alpha microglial cells induced hypoxia hypoxia demonstrated induce hif alpha expression autophagic cell death microglial cells enhanced autophagy reduced cell death initial stages restraining functions autophagy associated genes microtubule associated protein light chain phosphatidylethanolamine conjugate beclin modulating expression inflammatory cytokines tumor necrosis factor alpha interleukin beta target value determined cell counting kit cell death flow cytometry transmission electron microscopy immunohistochemical staining reverse transcription quantitative polymerase chain reaction western blotting elisa used analysis however increased expression hif alpha induced cell death autophagic cell death microglial cells furthermore effects hif alpha inhibitor methoxyestradiol hif alpha small interfering rna death autophagy microglial cells vitro investigated investigations revealed suppression autophagy decrease cell viability increase inflammatory cytokines results hif alpha inhibition hif alpha silencing conclusion results indicated appropriate expression hif alpha ameliorate autophagic cell death microglial cells associated hypoxia may provide novel therapeutic approach sci associated microglial cell activation
aims objectives recent studies show lobular carcinoma situ lcis invasive lobular carcinoma ilc share similar genetic molecular biology increasing concerns regarding biological significance lcis aim study investigate whether presence coexisting lcis ilc affects tumor biology behavior correlate clinicopathologic parameters materials methods study cases ilc included clinicopathologic parameters immunohistochemical stains estrogen receptor progesterone receptor cadherin human epidermal growth factor receptor mib ilc cases retrieved patient ilc coexisting lcis compared pure ilc cases respect different clinicopathologic parameters results cases cases pure ilc cases ilc coexisting lcis seventy six cases showed axillary lymph node metastases lymph node metastasis absent cases micrometastasis present cases stage cases respectively nodal involvement locoregional distant recurrence ilc lcis less frequent compared ilc without lcis value respectively presence coexisting lcis ilc predicted higher disease free survival dfs compared pure ilc log rank test divided different strata positive ilc cases associated lcis cases showed better dfs positive pure ilc cases log rank test similarly ilc cases lcis patient less years showed better dfs patient less years pure ilc log rank test conclusions conclusion ilc coexisting lobular carcinoma situ ilc lcis characterized less nodal involvement lower locoregional distant recurrence better dfs pure ilc divided different strata positive less year groups ilc lcis show even significant better dfs pure ilc findings suggest biological significance coexisting lcis ilc may effect tumor aggressiveness certain strata ilc
background formation distant metastases constitutes complex process variety different genes pathways involved improve patient survival necessary understand underlying mechanisms metastasis allow targeted intervention methods review provides overview general concepts metastasis focusing important genes pathways involved interventional strategies results cancer cells undergo different steps form metastasis prominently local invasion intravasation survival circulation arrest distant organ site extravasation micrometastasis formation metastatic colonization order pass steps different molecular pathways major importance egf ras raf mek erk pik akt mtor hgf met wnt beta catenin vegf signaling hgf met regulator macc wnt signaling target shown play major role metastatic process gene pathway provides opportunity therapeutic intervention conclusion since metastasis represents highly limiting factor cancer therapy causing cancer deaths imperative reveal underlying mechanisms fundamental uncovering prognostic markers new targeted therapy options karger gmbh freiburg
survivin splice variants dex involved pathogenesis numerous types cancer proliferating cell nuclear antigen pcna level correlates cellular proliferation present study aimed analyze potential utility survivin splice variants dex biomarkers thyroid cancer pcna survivin splice variants dex expressions analyzed tissue samples thyroid cancers benign lesions reverse transcription quantitative polymerase chain reaction immunohistochemistry ihc significantly higher staining survivin survivin dex survivin pcna thyroid malignant tumors compared benign lesions receiver operating characteristics curve analysis shown cut points survivin ihc expression sensitivity specificity area curve auc survivin dex ihc expression sensitivity specificity auc sensitivity specificity auc survivin sensitivity specificity auc best predictors thyroid cancer conclusion present study exhibited survivin dex expression high specificity sensitivity discrimination benign thyroid lesions cancers survivin dex may considered biological marker thyroid malignancy therefore applied clinical practice
micrornas mirnas extensive class small noncodin rnas nucleotides important roles regulation gene expression although large number mirnas identified variety eukaryotic systems function vast majority molecules remains unknown study functions mirnas crucial determine spatial temporal expression patterns although existing methods analyze expression mirnas easy task routine gene expression studies study established simple method detect expression mature mirnas total rna polyadenylated poly polymerase cdna synthesized specific reverse transcriptase primer reverse transcriptase using poly tailed total rna templates expression several mature mirnas assayed method expression profile two mirnas determined polymerase chain reaction pcr assay identical determined northern blotting data show poly tailed pcr convenient method detect expression mirnas
coronary heart disease chd leading cause mortality western societies affecting one third population seventieth year past decades modifiable risk factors chd identified including smoking diet factors altered significant impact individuals risk developing chd overall health quality life strong evidence suggesting dietary intake plant foods rich fibre polyphenolic compounds effectively lowers risk developing chd however efficacy foods often appears greater sum recognised biologically active parts discuss hypothesis beneficial metabolic vascular effects dietary fibre plant polyphenols due regulation colon systemic metabolic axis compounds fibres many polyphenols converted biologically active compounds colonic microbiota microbiota imparts great metabolic versatility dynamism many reductive hydrolytic activities appearing complementary oxidative conjugative human metabolism understanding microbial activities central determining role different dietary components preventing beneficially impacting impaired lipid metabolism vascular dysfunction typifies chd type diabetes approach lays foundation rational selection health promoting foods rational target driven design functional foods provides essential thus far overlooked dynamic understanding foods recognised healthy impact human metabonome
alzheimer disease since characterization precise form dementia pathological hallmarks captured scientists attention complexity last years filled discoveries regarding elusive aetiology disease thanks advances molecular biology live imaging techniques know important role played calcium ubiquitous second messenger regulates vast variety cellular processes neuronal excitation communication muscle fibre contraction hormone secretion action spanning temporal scale goes microseconds hours therefore challenging conceive single hypothesis integrate numerous findings issue coming classical fields research amyloid beta beta tau pathology contribution focus attention hypothesis dissecting much possible subcellular localization signal meets specificity also follow temporal evolution hypothesis providing updated discoveries whenever possible link findings regarding dysfunction players involved pathogenesis hoping provide crossover body evidence useful amplify knowledge lead towards discovery effective therapy elsevier ltd rights reserved
trypanosoma brucei undergoes cytokinesis uni directionally anterior tip new flagellum attachment zone faz toward posterior end cell recently delineated novel signaling pathway composed polo like kinase cytokinesis initiation factor cif aurora kinase acts concert new faz tip regulate cytokinesis initiation identify new cytokinesis regulators carried proximity dependent biotin identification identified many cif binding partners near neighbors report novel cif binding protein named cif mechanistic role cytokinesis initiation cif interacts cif vivo localizes cif new faz tip early cell cycle stages rnai cif inhibited normal anterior posterior cytokinesis activated alternative posterior anterior cytokinesis cif depletion destabilized cif disrupted localization polo like kinase aurora kinase new faz tip thus revealing mechanistic role cif cytokinesis initiation surprisingly overexpression cif also inhibited normal anterior posterior cytokinesis triggered alternative posterior anterior cytokinesis suggesting tight control cif protein abundance results identified new regulator cytokinesis regulatory pathway reiterated backup cytokinesis pathway activated inhibiting normal cytokinesis pathway
several important biological processes performed distinct functional domains found replication associated protein rep encoded geminiviruses two truncated forms replicase tac gene capable expressing terminal terminal nucleotides cloned transcriptional control camvs introduced cotton gossypium hirsutum using lba strain agrobacterium tumefaciens make use interference strategy impairing cotton leaf curl virus clcuv infection transgenic cotton compared nontransformed control observed transgenic cotton plants overexpressing either terminal terminal sequences confer resistance clcuv inhibiting replication viral genomic beta satellite dna components molecular analysis northern blot hybridization revealed high transgene expression early late growth stages associated inhibition clcuv replication eight transgenic lines tested six delayed minor symptoms compared nontransformed control lines developed disease symptoms weeks whitefly mediated viral delivery virus biological assay growth plants proved transgenic cotton plants overexpressing displayed high resistance level respectively compared non transformed control plants following inoculation viruliferous whiteflies giving significantly high cotton seed yield progeny analysis plants polymerase chain reaction pcr southern blotting virus biological assay showed stable transgene integration inheritance cotton leaf curl disease clcud resistance two eight transgenic lines single two transgene insertions transgenic cotton expressing partial gene clcuv used virus resistance source cotton breeding programs aiming improve virus resistance cotton crop
protein tyrosine phosphatase ptpb key enzyme variety physiological processes including insulin leptin signaling experimentally previously suggested form enzyme derived sulfenyl amide intermediate means protecting active site cysteinyl overoxidation study key aspects mechanism ptpb mediates overoxidation active site cysteinyl examined via multiscale computational enzymology molecular dynamics simulations high level hybrid quantum mechanics molecular mechanics several possible initial reactive complexes containing active site sulfenic acid oxidized cysteinyl considered well possible reaction pathways intermediates importantly enzymatically feasible mechanism formation putative sulfenyl amide intermediate occurs via stepwise pathway feasible mechanism found occur stepwise fashion stable iminol intermediate formed step activation energy mol later much stable iminol intermediate formed noncovalent electrostatic interaction sulfenic acid sulfur antibonding orbital iminol nitrogen lone pair found occur subsequently cyclic sulfenyl amide formed concomitant proton transfer glu sulfenic acid oxygen results suggest glu play crucial role mechanism results could contribute discovery ptpb inhibitors stabilization enzyme oxidized form
identification fungi dermatological samples using pcr reliable provides significantly improved results comparison cultures possible identify infectious agent negative results obtained cultures addition identification infectious agent obtained day conventional real time pcr methods used direct fungus identification collected samples vary dna extraction methods targeted dna primers way analysing pcr products choice unique method laboratory complicated results expected skin hair sample analysis different expected cases onychomycosis skin hair samples one dermatophyte among dozen possible species identified onychomycosis infectious agents mainly trichophyton rubrum lesser extent trichophyton interdigitale also moulds insensitive oral treatments used dermatophytes renders fungal identification mandatory benefits obtained use pcr methods routine analysis dermatological samples put balance relative importance getting result short time price molecular biology reagents equipment especially time spent conducting laboratory manipulations
background renal cell carcinoma one chemoresistant cancers metastatic form requires administration targeted therapies based angiogenesis mtor inhibitors understanding treatments impact human metabolism essential predict host response adjust personalised therapies present metabolomic investigation serum samples patients metastatic rcc mrcc identify metabolic signatures associated targeted therapies methods pre treatment serial treatment sera available patients participating french clinical trial torava randomised patients mrcc received bevacizumab temsirolimus combination experimental arm standard treatment either sunitinib interferon beta bevacizumab metabolic profiles obtained using nuclear magnetic resonance spectroscopy compared treatment treatments results multivariate statistical modelling discriminates serum profiles several weeks treatment arms combination causes faster changes patient metabolism treatment detectable weeks treatment metabolites related discrimination include lipids carbohydrates consistently known rcc metabolism side effects drugs involved comparison metabolic profiles three arms shows temsirolimus mtor inhibitor responsible faster host metabolism modification observed experimental arm conclusions mrcc metabolomics shows faster host metabolism modification induced mtor inhibitor compared standard treatments results confirmed larger cohorts cancer types
endothelin vasoconstrictor peptide plays important roles mammalian circulatory system also non mammalian systems gill lamellar vascular network complex structural characteristics show contraction pillar cells delimit lamellar vasculature controlled endothelin type endothelin receptor eta linked intracellular calcium signaling system eta receptor also highly expressed fugu erythrocytes hitherto unexpected finding database mining revealed presence five endothelin receptor etr sequences fugu genome northern blotting cdna cloning fura monitoring branchial etr subtype shown eta able induce transit immunohistochemistry revealed pillar cell erythrocyte localization results suggest endothelin eta mediated coordinated regulation pillar cell shape erythrocyte membrane flexibility elsevier inc rights reserved
objectives new evidence proven hepatoprotective activity curcumin however underlying mechanisms remain elucidated aim study investigate protective effect curcumin hepatic damage measuring antioxidant capacity expression level rho related botulinum toxin substrate rac racl guanosine triphosphate racl gtp nadph oxidase nox biliary duct ligated bdl fibrotic rat model methods wistar rats weighing divided four groups sham group sham cur group received curcumin daily bdl cur group bdl group mrna protein expression levels rac rac gtp nox measured real time polymerase chain reaction western blotting respectively results curcumin treatment bdl rats reduced liver injury verified improvement hepatic cell histologic alterations reduction hepatic enzymes moreover increase expression racl racl gtp nox observed bdl rats precluded reversed back toward normalcy curcumin treatment also observed escalation protein thiol groups increased enzyme activity serum antioxidant markers superoxide dismutase decrease carbonylation curcumin treated bdl rats compared bdl rats conclusions curcumin attenuated liver damage downregulation racl racl gtp nox well reduced oxidative stress serum liver tissue bdl rats elsevier inc rights reserved
background present rare early presentation adck related glomerulopathy case interest potentially treatable genetic results timely obtained case presentation report case year old boy identified significant proteinuria urinary routine screening program school children physical examination revealed dysplastic ears abnormal folded pinna albumin level urine proteins creatinine ratio renal ultrasound showed enlarged kidneys perimedullary hyperechogenicity treatment angiotensin converting enzyme inhibitor beneficial renal biopsy showed signs focal segmental glomerulosclerosis years follow developed clinical nephrotic syndrome response prednisone immunosuppressive agents obtained within months end stage renal failure esrf hemodialysis started transplanted years mother kidney genes known responsible steroid resistant nephrotic syndromes tested patient compound heterozygous two mutations aarf domain containing kinase adck gene adck gene one genes involved coenzyme coq biosynthesis located chromosome expressed podocytes adck mutations show largely renal limited phenotype nephropathy usually presents adolescence fast evolves towards esrf may treatable coq supplementation started early disease patient presented nephrotic range proteinuria years reached esrf years conclusion adck related glomerulopathy important novel potentially treatable cause isolated nephropathy adolescents also children first decade life discovery important proteinuria asymptomatic child prompt early genetic investigations
complement major humoral component innate immune system recognizes pathogen damage associated molecular patterns initiates immune response coordination innate adaptive immunity activated complement system unleashes powerful cytotoxic inflammatory mechanisms thus tight control crucial prevent damage host tissues allow restoration immune homeostasis factor major soluble inhibitor complement binding self markers particular glycan structures prevents complement activation amplification host surfaces surprisingly mutations polymorphisms affect recognition self factor associated diseases complement dysregulation age related macular degeneration atypical haemolytic uremic syndrome addition pathogens non self cancer cells altered self hijack factor evade immune response review recent recent literature structure function factor including emerging roles protein pathophysiology infectious diseases cancer
examined urinary excretion benzyl acetylcysteine sbac toluene sniffers using capillary gas chromatography sbac extracted urine chloroform backextracted sodium bicarbonate solution acidification aqueous solution reextracted ethyl acetate derivatized methyl ester peak appearing gas chromatogram identified sbac mass spectrometry calibration curve constructed plotting peak height ratio sbac internal standard phenethyl acetylcysteine analyte concentration using toluene unexposed urine showed good linearity range applied technique urine samples toluene sniffers sbac detected urinary samples sniffers urine toluene unexposed subjects results prove sbac also formed toluene human metabolism detection sbac considered useful marker inhalation toluene
background angiotensin converting enzyme ace zinc protease unique chloride ion dependence results key substrate interactions catalytic site affect structure thermodynamics ace modulate chloride ion dependent hydrolysis conclusion substrate composition influences chloride affinity ace significance interdependence ace substrate composition structure thermodynamics influence chloride ion activation biology somatic angiotensin converting enzyme sace key regulator blood pressure electrolyte fluid homeostasis cleaves vasoactive angiotensin bradykinin number physiologically relevant peptides sace consists two homologous catalytically active domains display marked differences substrate specificities chloride activation series single substitution mutants generated evaluated varying chloride concentrations using isothermal titration calorimetry ray crystal structures mutants provided details chloride dependent interactions ace chloride binding chloride pocket domain ace found affect positioning residues active site analysis chloride pocket mutations revealed key interactions catalytic site stabilized via chloride coordination arg substrate interactions subsite shown affect chloride affinity chloride pocket glu lys salt bridge domain ace shown stabilize hinge bending region reduce chloride affinity constraining chloride pocket work demonstrated substrate composition terminal side scissile bond well interactions larger substrates subsite moderate chloride affinity chloride pocket ace domain providing rationale substrate selective nature chloride dependence ace varies domains
field trials conducted natural infection artificial inoculation seven sites across canadian prairies determine genetic management effects fusarium head blight fhb wheat production systems system management consisted control fungicide compared seed treatment thiamethoxam difenoconazole metalaxyl isomer crop foliar fungicide tebuconazole prothioconazole foliar fungicide integrated four wheat cultivars contrasting growth habits levels fhb resistance results indicated cultivars expressing improved fhb resistance carberry spring wheat emerson winter wheat superior susceptible cultivars harvest spring wheat cdc falcon winter wheat reducing fusarium damaged kernel fdk deoxynivalenol levels displayed higher yield high fusarium pressure winter wheat displayed higher overall yield emerson producing highest stable yields across environments application foliar fungicide without increased grain yield seed mass test weight lowered fdk seed treatment alone increased test weight spring plant density winter wheat varieties kernel weight emerson management strategy foliar fungicide foliar fungicide generally produced higher yields greater stability particularly susceptible cultivars high fhb environments results study reinforce integration fhb resistant cultivars appropriate cultural practices required reduce risk fhb optimize grain yield enhanced winter spring growth habit
recent years research magnesium alloys increased significantly hard tissue replacement stent application due outstanding advantages firstly alloys mechanical properties similar bone avoid stress shielding secondly biocompatible essential human metabolism factor many enzymes addition main degradation product essential trace element human enzymes important reason perfectly biodegradable body fluid however extremely high degradation rate resulting rapid loss mechanical strength chloride containing environments limits applications engineered artificial biomaterials appropriate mechanical properties surface chemistry surface topography great demand interaction cells tissues biomaterials tissue implant interface surface phenomenon surface properties play major role determining biological response implants material response physiological condition therefore ability modify surface properties preserve bulk properties important surface modification form hard biocompatible corrosion resistant modified layer always interesting topic biomaterials field article attempts made give overview current research development status surface modification technologies alloys biomedical materials research advantages disadvantages different methods regard promising method alloys discussed finally scientific challenges proposed based research work scientists
purpose major problem producing artificial livers primary hepatocytes cultured many days recently dimensional printing technology draws attention technology regarded useful tool current cell biology using bio printing problems resolved methods generate bio printed structures cells alginate constructs fabricated bio printing system mouse primary hepatocytes isolated livers weeks old mice step collagenase method samples hepatocytes viability printed alginate solution cultured well defined culture medium primary hepatocytes confirm functional ability hepatocytes cultured alginate scaffold conducted quantitative real time polymerase chain reaction immunofluorescence hepatic marker genes results isolated primary hepatocytes printed alginate printed hepatocytes remained alive days gene expression levels albumin hnf alpha foxa gradually increased structures immunofluorescence analysis showed primary hepatocytes produced hepatic specific proteins period time conclusion research indicates bio printing technique used long term culture primary hepatocytes therefore used drug screening potential method producing artificial livers
background objective oral epithelial cells help prevent bacterial infection oral cavity producing antimicrobial peptides amps broad spectrum amp calprotectin complex proteins expressed oral epithelial cells regulated interleukin alpha alpha shosaikoto sst traditional japanese herbal medicine immunomodulatory effects reported enhance levels alpha epithelial cells purpose study investigate effect sst expression calprotectin amps regulation alpha oral epithelial cells material methods human oral epithelial cells cultured sst concentrations ranging presence absence anti alpha receptor antagonist expression specific mrnas examined northern blotting calprotectin expression alpha secretion investigated immunofluorescent staining elisa expression amps alpha analyzed pcr quantitative real time pcr results shosaikoto significantly increased expression specific mrnas calprotectin protein shosaikoto increased expression effect expression amps expression alpha specific mrna protein slightly increased sst neutralizing antibody alpha receptor antagonist inhibited sst regulated mrna expression conclusion results suggest sst increases expression calprotectin oral epithelial cells response sst regulation calprotectin may partially induced via alpha
mysid leptomysis lingvura found along east coast gran canaria spain swimming plankton sandy bottoms depths many mysids around world important component food chain many coastal fish could potential live prey use aquaculture herrera jumars studied lingvura survival reproduction captivity determined suitability physiological biochemical research laboratory mysid proved adapt well aquarium life highly suitable studying respiratory metabolism investigation documents effect feeding starvation enzymology physiology respiration research strategy follow simple time course oxygen consumption rate whole mysids activity respiratory electron transport system ets respiration decreased logarithmically starvation whereas ets activity remained constant consequence ratio ets activity decreased along respiration superimposed declining respiration rate unforeseen diel rhythm elevated light depressed dark slope biomass log log kleiber plot well fed mysids close starved mysids lower elsevier rights reserved
background gutless marine worm olavius algarvensis completely reduced digestive excretory system lives obligate nutritional symbiosis bacterial symbionts considerable knowledge gained symbionts host remained largely unstudied generated transcriptomes proteomes algarvensis better understand annelid worm gains nutrition symbionts adapted physiologically symbiotic lifestyle innate immune system recognizes responds symbiotic microbiota results key adaptations symbiosis include expression gut specific digestive enzymes despite absence gut likely digestion symbionts host epidermal cells modified hemoglobin may bind hydrogen sulfide produced two worm symbionts iii expression abundant protein oxygen storage hemerythrin could provide oxygen symbionts host anoxic conditions additionally identified large repertoire proteins involved interactions worm innate immune system symbiotic microbiota peptidoglycan recognition proteins lectins fibrinogen related proteins toll scavenger receptors antimicrobial proteins conclusions show worm course evolutionary time modified widely used proteins changed expression patterns adaptation symbiotic lifestyle describe expressed components innate immune system marine oligochaete results provide support recent realization animals evolved within context associations microbes adaptive responses symbiotic microbiota led biological innovations
background tick borne haemoparasitic diseases tbhds caused theileria babesia anaplasma ehrlichia common regions world distributions host pathogen vector overlap many diseases threaten livestock production also represent concern human public health primary aim study determine prevalence mentioned pathogens large number blood samples collected sheep goats turkey secondary aim assess diagnostic sensitivity number species specific polymerase chain reaction pcr tests reverse line blotting rlb assay dna samples screened using species specific pcr presence theileria ovis theileria lestoquardi uilenbergi luwenshuni babesia ovis anaplasma ovis phagocytophilum rlb undertaken test presence known theileria babesia anaplasma ehrlichia species diagnostic sensitivity two approaches compared terms ability detect single species mixed infections results overall small ruminants sampled identified hosting one pathogen species specific pcr rlb respectively presence theileria luwenshuni uilenbergi turkey revealed first time presence babesia motasi crassa separata turkish small ruminants confirmed using molecular methods high prevalence mixed infection evident pcr rlb approaches indicating animals infected multiple species respectively mixed infections contained ovis ovis rlb approach found capable detecting mixed infections species theileria theileria separata crassa babesia spp conclusion results indicated pathogens causing tbhds highly prevalent sheep goats turkey diagnostic sensitivity species specific single pcr generally higher rlb however latter approach still capable identifying high proportion individuals containing mixed species infections use species specific single pcr recommended accurately estimate pathogen prevalence identify infected hosts
introduction enzymes macromolecular catalysts many living processes represent sizable proportion druggable biological targets enzymology practiced century much progress made identification new enzymes development novel methodologies enzyme kinetics areas covered review aims address several key practical aspects enzyme kinetics reference translational drug discovery research authors first define constitutes high performance enzyme kinetic assay authors review best practices turnover activation inhibition kinetics derive critical parameters guiding drug discovery notably authors recommend global progress curve analysis dose time dependence employing integrated michaelis menten equation global curve fitting dose dose dependence expert opinion authors believe vivo enzyme substrate abundance dynamics binding modality drug binding kinetics enzyme position metabolic networks assessed gauge translational impact drug efficacy safety integrating factors systems biology systems pharmacology model facilitate translational drug discovery
viral supergroup includes entire collection known unknown viruses roam planet infect life forms supergroup remarkably diverse genetics morphology historically remained difficult study classify accumulation protein structure data past years provides excellent opportunity examine classification evolution viruses scan completely sequenced viral proteomes genome types identify protein folds involved formation viral capsids virion architectures viruses encoding similar capsid coat related folds pooled lineages benchmarking published literature remarkably silico exercise reproduced previously described members known structure based viral lineages along several proposals new additions suggesting could useful supplement experimental approaches aid qualitative assessment viral diversity metagenome samples
ghrelin acyltransferase goat transmembrane integral membrane protein octanoylates metabolism regulating peptide hormone ghrelin ser may represent attractive target treatment type diabetes metabolic syndrome protein octanoylation unique ghrelin humans little known mechanism goat related protein acyltransferases hhat porc study explored vitro microsomal ghrelin octanoylation assay analyze enzymologic features measurement mer mer synthetic tat peptide containing ghrelin substrates provided evidence role charge interactions substrate binding ghrelin substrates amino alanine place ser demonstrated goat catalyze formation octanoyl amide bond similar rate compared natural reaction rate comparison substrates revealed minimal differences acyltransferase activity across providing evidence reactions may relatively insensitive basicity substrate nucleophile conserved residue required ser amino ala ghrelin substrates suggesting may key catalytic role beyond general base elsevier inc rights reserved
stem cell biology played pivotal role field disease modeling regenerative medicine tissue engineering scope stem cell research extended address issues associated toxicity biosafety however role field neurotoxicity emerging field developmental neurotoxicity dnt somewhat underrepresented needs thorough investigation several challenges hindered progress dnt studies dire need human specific high throughput vitro system tool better predictivity reliability reproducibility unique proliferation pluripotency stem cells makes tremendous resource human material allowing prediction drug toxicity metabolic effects chemicals recognizing growing importance dnt application stem cell biology review article provide diversified approaches stem cell research effectively applied dnt studies provide update recent progress made far provide futuristic approach towards novel stem cell based strategies dnt testing discussed current technologies role induced pluripotent stem cells application three dimensional cultures role stem cell derived organs dnt studies
purpose report outcomes primary transconjunctival gauge vitrectomy diagnosis treatment presumed endogenous fungal endophthalmitis efe methods retrospective analysis patients efe underwent diagnostic transconjunctival vitrectomy tertiary referral center results nineteen eyes patients efe included study four patients bilateral patients unilateral disease sixteen eyes patients underwent vitrectomy confirm diagnosis using vitreous culture polymerase chain reaction histopathologic examinations affected eyes treated intravitreal amphotericin fourteen patients received additional systemic antifungal therapy diagnostic vitrectomy confirmed diagnosis efe eyes candida found causative agent aspergillus eyes retinal detachment common complication eyes conclusions efe easily confirmed using primary vitrectomy
amyotrophic lateral sclerosis als fatal neurodegenerative disease characterized selective loss upper lower motor neurons despite intensive research origin progression als remain largely unknown suggesting traditional clinical diagnosis treatment strategies might adequate completely capture molecular complexity underlying disease previous work comprehensive genomic profiling motor cortex samples enabled discriminate control sporadic als patients segregated latter two distinct subgroups associated different deregulated genes pathways interestingly deregulated genes sporadic als previously associated familiar als indicating shared pathogenic mechanisms two forms disease performed cluster analysis whole genome expression profiles using restricted subset genes extensively implicated monogenic forms als surprisingly short unbiased gene list sufficiently representative allow accurate separation sals patients controls stratification sals patients two molecularly distinct subgroups overall findings support existence molecular taxonomy als represent step toward establishment molecular based diagnosis patient tailored therapies
three novel small noncoding rnas identified conserved intronic regions melanogaster using comparative genomics method molecular biology approach one novel snorna combinated way displays structural features typical box snorna family possesses long rrna antisense element guiding methylation melanogaster rrna two mirnas whose predicted precursors adopt stem loop structure characteristic known mirna two mirnas genes appear ubiquitous expression profiles similar rna transcripts detected northern blotting study revealed multi species intronic conserved sequences mcis nested introns length addition small rna coding mcis might function cis acting elements involved gene transcription post transcriptional processing
species coexistence requires differential response inter intraspecific competition typically conceptualized niche differentiation coexistence close relatives therefore poses interesting scenario regards niche differentiation since species generally many traits common due shared ancestry native californian trifolium assemblages locally diverse represent unique system understanding competitive interactions among close relatives conducted two similar greenhouse studies trifolium fucatum grown alone con specific competitor congeneric competitor trifolium macraei first study assessed biomass production fucatum second study conducted rnaseq analysis fucatum roots test differentially expressed genes may mediate competitive interactions potentially coexistence compared plants grown alone competition growth pot conspecific resulted greater reduction biomass competition congener predicted theory however competition congener resulted twice many differentially expressed genes competition conspecific annotations identified genes differentiating congeneric conspecific competition suggest several functions attributed interactions third party organisms including nodulation rhizobial mutualists defence responses pathogens herbivores addition salt responsive genes iron transporter differentially expressed congeneric competition comparisons sodium iron concentrations field soils species found showed fucatum occurs higher sodium iron microsites macraei thus transcriptome highlighted abiotic niche axes worth pursuing future ecological experiments potential mediators coexistence also found subset genes responded similarly congeneric conspecific competition direction magnitude indicating conserved responses competition regardless neighbour identity synthesis transcriptomic analyses represent novel tools identifying molecular mechanisms underlying interactions among species working iteratively ecological experimentation observation transcriptomes may allow identify novel dimensions dimensional niche determine species distributions ability coexist
recently chimeric mice humanized liver established transplanting human hepatocytes urokinase type plasminogen activator severe combined immunodeficient transgenic mouse line replacement human hepatocytes higher chimeric mouse reported previously drug development liver one important organs mainly involved pharmacokinetics drugs frequently damaged many drugs due accumulation drugs metabolites pharmacokinetics could affect efficacy toxicity drug thus prediction human pharmacokinetics important developing new drugs without adverse reactions toxicity extrapolation experimental animals vitro studies human vivo pharmacokinetics still difficult date human hepatocytes liver microsomes recognized better tools frequently used estimate human pharmacokinetics thought chimeric mice humanized liver could become new tool estimating human toxicity pharmacokinetics first metabolism plays essential role pharmacokinetics investigated chimeric mice liver chimeric mice human drug metabolizing enzymes found expressed reflect capacities genetic polymorphism donor vivo study metabolism human specific metabolites could detected serum chimeric mice indicating chimeric mice could used vivo model address human metabolism results suggested chimeric mice could overcome species differences drug metabolism used evaluate drug toxicity due genetic polymorphism reasons drug interaction often enzyme induction inhibition treatment typical inducer cytochrome central drug metabolizing enzyme expressed liver chimeric mice found possess induction potencies treatment specific inhibitor human area curve metabolite significantly decreased chimeric mice control mice therefore indicated chimeric mice could useful assessing drug interactions vivo moreover drug excretion determined humanized cefmetazole mainly excreted urine chimeric mice humans feces control upa scid mice drug transporters expressed liver chimeric mice also humanized review studies chimeric mice humanized liver particularly metabolism excretion summarized possibility using chimeric mice proposed advanced prediction human pharmacokinetics toxicity elsevier ireland ltd rights reserved
plant science currently dawn era mathematical modeling computational simulations influence boost tremendously gain new knowledge however many plant scientists mathematical modeling still rather dubious often negligently considered oversimplification real situation goal article provide toolbox allows first steps modeling transport phenomena plants provided framework applied simulation uptake cells via channels historically uptake systems divided high affinity coupled transporters low affinity channels transporters computational cell biology studies presented refute separation show channels general uptake systems low high affinity components analyses clarify constraints wet lab experiments usually mask high affinity component consequently channels widely assigned low affinity component results presented unmask absurdity concept high low affinity transporters
xenotransplantation pigs provides possible solution shortage human organs allotransplantation porcine endogenous retroviruses pervs possible obstacle using porcine organs addition immunological barriers three main types pervs previously investigated diverse pig breeds examine copy numbers pervs genomic locations korean native pig genome screened bac bacterial artificial chromosome library perv specific protease primers initial recognition perv positive clones three sets envelope specific primers identification perv types total perv positive clones nine perv perv identified library screening bac contigs constructed using primers designed bac end sequences bess primers also used sch somatic cell hybrid radiation hybrid mapping perv positive clones results indicate perv positive bac clones belong nine contigs singleton sch imprh inra minnesota porcine radiation hybrid mapping results indicated least eight separate perv genomic locations consisting three perv five perv one contig could mapped two contigs closely located ssc southern blotting indicates may additional sites investigation clones contribute general strategy generate perv free lines pigs suitable xenotransplantation
objective gut microbial translocation major driving force behind chronic immune activation hiv infection hiv related intestinal dysbiosis including increases mucosa associated pathobionts may influence microbial translocation contribute mucosal systemic inflammation thus critical understand mechanisms gut microbes metabolic products butyrate influence immune cell function hiv infection design cross sectional study performed compare relative abundance butyrate producing bacterial bpb species colonic biopsies stool untreated chronic hiv infected hiv uninfected study participants effect exogenously added butyrate gut cell activation hiv infection evaluated using vivo human intestinal cell culture model methods species identified ribosomal rna sequence datasets vivo isolated lamina propria mononuclear cells infected chemokine receptor type tropic hiv bal cultured enteric gram negative bacteria range butyrate doses lamina propria cell activation hiv infection levels measured results relative abundance total bpb specifically roseburia intestinalis lower colonic mucosa hiv infected versus hiv uninfected individuals hiv infected study participants intestinalis relative abundance inversely correlated systemic indicators microbial translocation immune activation vascular inflammation exogenous butyrate suppressed enteric gram negative bacteria driven lamina propria cell activation hiv infection levels vitro conclusion reductions mucosal butyrate diminished colonic bpb may exacerbate pathobiont driven gut cell activation hiv replication thereby contributing hiv associated mucosal pathogenesis copyright wolters kluwer health inc rights reserved
alternative lengthening telomeres alt mechanism represents alternative enzyme telomerase maintenance mammalian telomeres sarcomas minority carcinomas alt positive cells distinguished long heterogeneous telomere length distributions terminal restriction fragment trf southern blotting another diagnostic marker alt discrete nuclear localized signals telomeric dna promyelocytic leukaemia protein pml referred alt associated pml bodies apbs recently detected smaller sized localized pml telomere dna apb like bodies endothelial cells adjacent astrocytoma tumour cells situ study examined wide variety non neoplastic tissues report localized signals pml telomere dna present endothelial stromal epithelial cells localized signals pml telomere dna showed increased frequency non neoplastic cells dna damage results suggest mechanism similar alt positive tumours also operates non neoplastic cells may activated dna damage copyright pathological society great britain ireland published john wiley sons ltd
oxidative stress fast becoming nutritional medical buzzword twenty first century theoretical importance oxidative stress diabetes highlighted potential double impact metabolic dysfunction one hand vascular system hand new concept oxidative stress important trigger onset progression diabetes complications emphasizes need measurement markers oxidation assess degree oxidative stress routinely measuring biomarkers molecular epidemiology projects discuss utility two assays dna damage assessment comet measurement telomere length measurement dna damage efficiently repaired cellular enzymes measurement gives snapshot view level oxidative stress protocol allows measurement oxidative dna damage fpg sensitive dna strand breaks telomere length measured southern blotting technique allows one estimate chronic burden oxidative stress molecular level considered biomarker biological aging
fusion constructs used improve properties impart novel functionality proteins biotechnological applications biochemical characteristics enzymes functional proteins optimized fusion include catalytic efficiency stability activity expression secretion solubility review summarize parameters enzymes functional proteins modified fusion constructs parameter fusion strategies molecular partners examined using examples recent studies future prospects field also discussed review expected increase interest advance fusion strategies optimization enzymes functional proteins
arabidopsis thaliana bzip atbzip transcription factor regulates stress signaling however involvement plant salt tolerance fully understood investigation cell suspension cultures three different plant species tobacco nicotiana tabacum rice oryza sativa slash pine pinus elliottii engelm transformed via agrobacterium tumefaciens lba harboring pbi atbzipdeltac integration atbzipdeltac genome tobacco rice slash pine confirmed polymerase chain reaction southern blotting northern blotting analyses six transgenic cell lines three species used analyze salt tolerance conferred overexpression atbzipdeltac results demonstrated expression atbzipdeltac enhanced salt tolerance transgenic cells transgenic lines improved salt tolerance associated increased activities ascorbate peroxidase superoxide dismutase decreased lipid peroxidation thiobarbituric acid reactive substances investigation demonstrated expression atbzipdeltac gene transgenic cell lines attenuated salt induced oxidative damage increasing activities antioxidant enzymes overexpression atbzipdeltac gene could alternative choice engineering plant salt tolerance
metal complexes subject numerous investigations oncology despite plethora newly synthesized compounds precise mechanisms action remain generally unknown best incompletely determined continuous development efficient sensitive techniques analytical chemistry molecular biology gives scientists new tools gather information metal complexes effective toward cancer review focuses recent findings anticancer mechanism action metal complexes ligands used tune pharmacological physicochemical properties
background extrapulmonary tuberculosis eptb constitutes cases tuberculosis confirmation eptb always challenge laboratory personnel aim evaluate diagnostic potential immunostaining anti mpt various eptb specimens materials methods studied total cases non control specimens comprising fine needle aspirates formalin fixed biopsies investigated using combination ziehl neelsen method lowenstein jensen culture immunostaining anti mpt anti bcg nested polymerase chain reaction pcr results tests compared using nested pcr gold standard results diagnostic validation immunostaining anti mpt performed using nested pcr gold standard overall sensitivity specificity positive negative predictive values immunostaining anti mpt respectively conclusions immunostaining using anti mpt rapid sensitive method establishing early specific diagnosis mycobacterium tuberculosis infection technique simple incorporated routine pathology laboratories
background recently concept recurrent implantation failure rif assisted reproductive technology enlarged chronic uterine inflammation known cause implantation failure associated high matrix metalloproteinase mmp activity uterine cavity flushing mmp activity women rif reported higher fertile women present retrospective study evaluated efficacy treatment high mmp activity uterine cavity patients rif methods patients recruited study patients underwent mmp measurements patients control group patients failed become pregnant despite least two transfers good quality embryos gelatinase mmp mmp activity uterine flushing fluid detected enzymology mmp test samples classified two groups positive negative based intensity bands enzyme zymogram represents degree mmp activity patients tested positive initial test treated weeks quinolone antibiotic corticosteroid subsequently underwent second mmp test negative results second mmp tests treatment subsequent rates pregnancy miscarriage used evaluate efficacy treatment data analyzed mann whitney test chi square test results patients underwent mmp test positive results high mmp activity treatment patients negative results second mmp test patients significantly better pregnancy rate control group well lower miscarriage rate respectively conclusions week course antibiotics corticosteroids effectively improves uterine environment underlying rif reducing mmp activity
background diethyl toluamide deet widely used insect repellent united states objectives assess exposure deet representative sample persons years older general population national health nutrition examination survey methods analyzed urine samples using online solid phase extraction coupled isotope dilution high performance liquid chromatography tandem mass spectrometry used regression models examine associations various demographic parameters urinary concentrations deet biomarkers results detected deet samples concentration ranges much lower diethylcarbamoyl benzoic acid dcba diethyl hydroxymethylbenzamide dhmb dcba frequently detected metabolite similar regardless survey cycle person race ethnicity income adjusted geometric mean concentrations dcba higher may sep oct apr furthermore non hispanic whites warm season likely colder months adjusted odds ratio confidence interval likely non hispanic blacks dcba concentrations percentile conclusions general population including school age children exposed deet however reliance deet sole urinary biomarker would likely underestimate prevalence exposure instead oxidative metabolites deet adequate exposure biomarkers differences season year based demographic variables including race ethnicity likely reflect different lifestyle uses deet containing products published elsevier ltd
lentivirus mediated transduction autologous cells chimeric antigen receptor car confer desired epitope specificity targeted immunotherapy cancer among first human gene therapy techniques demonstrate widespread therapeutic efficacy approaches using gene therapy enhance antitumor immunity less specific less effective included amplification marking cytokine transduction tumor infiltrating lymphocytes recombinant virus based expression tumor antigens tumor vaccine transduction antigen presenting cells tumor antigens unlike methods engineering car cells combine specific monoclonal antibody gene sequences confer epitope specificity cell receptor activation domains create self contained single vector approach produce specific antitumor response seen directed car cells used treat expressing cell malignancies recent success therapies culmination long step wise iterative process improvement design car vectors review aims summarize long series advances development effective car vector since initial development describe emerging approaches design promise enhance widen human gene therapy relevance car cell therapy future
background sialic acids negatively charged nine carbon backbone sugars expressed mammalian cell surfaces sialic acids part larger family nonulosonic acid nulo molecules includes pseudaminic legionaminic acids microbial expression sialic acids nonulosonic acids shown contribute host microbe interactions variety contexts including participation colonization immune subversion behaviors biofilm formation autoagglutination motility previous research suggested spirochetes may also express molecules results use combination molecular tools investigate presence nulo biosynthetic gene clusters among clinical saprophytic isolates genus leptospira polymerase chain reaction southern blotting suggested variety leptospires encoded nulo biosynthetic pathways high performance liquid chromatography mass spectrometry analyses provided biochemical evidence acetylated nulo molecules expressed relatively high levels interrogans serovar lai strain lower levels alexanderi serovar manhao fainei serovar hurstbridge endogenous expression acetylneuraminic acid neuac common sialic acid documented interrogans serovar copenhageni strain neuac biosynthesis also supported unique gene fusion event resulting enzyme terminal acetylneuraminic acid synthase domain terminal phosphatase domain gene fusion suggests interrogans uses neuac biosynthetic pathway similar animals bacteria analysis composition phylogeny putative nulo biosynthetic gene clusters interrogans serovar lai serovar copenhageni revealed strains complete biosynthetic pathways legionamimic acid synthesis molecule stereochemistry sialic acid lectin based affinity purification nulo modified molecules followed mass spectrometric identification suggests post translational modification surface lipoproteins including loa conclusions leptospira species encode nulo biosynthetic pathways synthesize multiple nulo molecules including sialic acid additional studies needed clarify exact context functional significance nulo expression findings implications immune evasion systemic leptospirosis
transformation dna microbial cells via heat shock approach well established field molecular biology decades herein described unexpected finding heat shock may play essential role transformation process observation verified via vis fluorescence spectroscopies confocal microscopy images various dnas bacterial cells non heat shock approach proposed study convenient beneficial modification dna transformation especially laboratories lacking ice machine heat shock equipment
background recommended screening rabies suspect animal cases involves testing fresh brain tissue preservation fresh tissue however difficult field conditions formalin fixation provides simple alternative may allow confirmatory diagnosis occurrence location histopathological changes immunohistochemical ihc labelling rabies formalin fixed paraffin embedded ffpe canine brain described samples rabies suspect cases sri lanka presence negri bodies immunohistochemical detection rabies virus antigen evaluated cortex hippocampus cerebellum brainstem effect autolysis artefactual degeneration tissue also assessed results rabies confirmed cases ihc ihc labelling statistically abundant brainstem negri bodies observed positive cases although tissue degradation effect ihc diagnosis associated inability detect negri bodies cases confirmatory polymerase chain reaction pcr testing rabies virus rna undertaken extracting rna fresh frozen tissue also attempted using ffpe samples pcr detection using fresh frozen samples agreement ihc results pcr method ffpe tissues suitable control material unsuccessful field cases conclusions histopathological examination brain essential define differential diagnoses behaviour modifying conditions rabies virus negative cases unreliable sole method rabies diagnosis particularly artefactual change occurred formalin fixation paraffin embedding prevent detection rabies virus via ihc labelling even artefactual degeneration occurred could represent pragmatic secondary assay rabies diagnosis field formalin fixation prevent sample degeneration brain stem shown site viral immunoreactivity supporting recommended sampling protocols favour improved necropsy safety field pcr testing formalin fixed tissue may successful certain circumstances alternative test
contour clamped homogenous electric field chef gel electrophoresis variant pulsed field gel electrophoresis pfge powerful technique resolving large fragments dna chef many applications including physical mapping chromosomes artificial chromosomes sub chromosomal dna fragments etc describe use chef two dimensional gel electrophoresis analyze rrna gene methylation patterns within two similar million base pair nucleolus organizer regions nors arabidopsis thaliana method involves chef gel electrophoresis agarose embedded dna following restriction endonuclease digestion cut nors large resolvable segments followed digestion methylation sensitive restriction endonucleases conventional chef gel electrophoresis second dimension resulting products detected southern blotting pcr analyses capable discriminating rrna gene subtypes
despite superficial localization skin pathogenic dermatophytes induce complex still misunderstood immune response hosts cell mediated immunity cmi correlated clinical recovery protection reinfection lymphocytes recognized crucial component immune defense dermatophytes discovery pathway cmi considered dependent cells thus studies immunology dermatophytosis focused pathway nevertheless fine comparative analysis available scientific data immunology dermatophytosis one hand pathway mechanisms involved opportunistic mucosal fungal infections hand reveals key elements pathway activated dermatophytes stimulation pathway could occur activation type lectin like receptors inflammasome antigen presenting cells cells could back affected skin production signature cytokines could induce effector mechanisms like recruitment polymorphonuclear neutrophils synthesis antimicrobial peptides conclusion besides pathway important immune response dermatophytes also growing evidences involvement pathway
purpose diabetic retinopathy leading cause vision loss previous studies shown signaling pathways mediated stat signal transducer activator transcription play primary role diabetic retinopathy progression study tested clt small molecule inhibitor stat dose dependent therapeutic effects vision loss rat model diabetic retinopathy methods brown norway rats administered streptozotocin stz induce diabetes clt administered daily oral gavage weeks concentrations respectively beginning days post streptozotocin administration systemic ocular drug concentration quantified mass spectrometry visual function monitored week intervals weeks using optokinetic tracking measure visual acuity contrast sensitivity presence severity cataracts visually monitored correlated visual acuity transcription translation multiple angiogenic factors inflammatory cytokines measured real time polymerase chain reaction multiplex immunoassay results streptozotocin diabetic rats sustain progressive vision loss weeks loss visual function rescued dose dependent manner clt positive therapeutic effect correlates positive effects clt vascular leakage presence inflammatory cytokines retina conclusions present study indicates stat inhibition strong therapeutic potential treatment vision loss diabetic retinopathy
background human metabolism essential biological process involves consumption different substrates ensure nutritional energetic needs cells disruption highly regulated system constitutes onset several disorders dysfunctions diabetes mellitus cardiovascular diseases hypertension objective review propose discuss promising natural products act modulators cell metabolism point towards possible targets take account development new therapies metabolic diseases methods defined main focus undertook intensive search bibliographic databases select peer reviewed papers fits within review thematic information screened papers described organized manner review different types studies included results two hundred seventy papers included review well one reliable website world health organization several articles described pharmacological agents commonly used counteract metabolic disorders however many cases products insufficient represent high costs health care systems associated several undesirable effects highlighting need search new therapies notably many papers reported promising results natural products treatment several metabolic disorders constituting possible alternative complementary strategy pharmacological agents conclusion findings review confirm currently available treatments metabolic disorders associated complications remain far expected results
antibody mediated rejection emerged leading cause late graft loss kidney transplant recipients inhibition donor specific antibody production lead improved transplant outcomes fusion protein cytotoxic lymphocyte associated protein immunoglobulin ctla blocks cell activation consequently inhibits dependent cell antibody production current paradigm ctla effective naive cells less activated memory cells study used mouse model allosensitization investigate efficacy continuous ctla treatment initiated days sensitization inhibiting ongoing allospecific cell responses delayed treatment ctla collapsed allospecific germinal center cell response inhibited alloantibody production using adoptively transferred cell receptor transgenic cells novel approach track endogenous graft specific cells demonstrate delayed ctla minimally inhibited graft specific follicular helper responses remarkably delaying ctla day transplantation fully mismatched heart transplant model inhibited alloantibody production prevented acute rejection whereas transferred hyperimmune sera reversed effects delayed ctla collectively studies revealed unexpected efficacy ctla inhibiting ongoing cell responses even graft specific cell response robustly established young report unexpected efficacy ctla halting ongoing cell responses even treatment initiated graft specific cell response robustly established
familial adenomatous polyposis fap mendelian inherintance man rare autosomal dominant disorder characterized development numerous adenomatous polyps throughout colon rectum associated increased risk colorectal cancer fap time accompanied certain extraintestinal manifestations congenital hypertrophy retinal pigment epithelium dental disorders desmoid tumors caused mutations adenomatous polyposis coli apc gene present study reported chinese family fap polymerase chain reaction direct sequencing full coding sequence apc gene performed identify mutation family nonsense mutation apc gene identified pedigree heterozygous substitution position exon apc gene formed premature stop codon amino acid residue glu resulting truncated protein lacked amino acids present study expanded database apc gene mutations fap enriched spectrum known germline mutations apc gene prophylactic proctocolectomy may considered possible treatment carriers mutation
inductively coupled plasma mass spectrometry icp applied increasing frequency study human nutrition heavy metal toxicity icp provides reliable isotope ratio determinations superior metal concentration sensitivity combined compound separation technology part sample introduction phase icp extends tools available studies human metabolism heavy metal poisoning basis icp fields reviewed examples presented zinc nutrition lead toxicity demonstrate advances achieved icp prospect kinetic models icp data explored
emergence proteomics led major technological advances mass spectrometry advancements benefitted based high throughput proteomics also increased impact mass spectrometry field structural molecular biology review state art methods including native top protein sequencing cross linking hydrogen deuterium exchange nowadays enable characterization biomolecular structures functions interactions particular focus role mass spectrometry integrated structural molecular biology investigations biological macromolecular complexes cellular machineries highlighting work crispr cas systems eukaryotic transcription complexes
fusarium wilt caused fusarium oxysporum cubense foc among destructive diseases banana musa spp credible control measures available development resistant cultivars genetic engineering option investigated whether intron hairpin rna ihprna mediated expression small interfering rnas sirnas targeted vital fungal genes velvet fusarium transcription factor transgenic banana could achieve effective resistance foc partial sequences two genes assembled ihprnas suitable binary vectors ihprna vel ihprna ftf transformed embryogenic cell suspensions banana rasthali agrobacterium mediated genetic transformation eleven transformed lines derived ihprna vel twelve lines derived ihprna ftf found free external internal symptoms foc week long greenhouse bioassays five selected transgenic lines construct continued resist foc months postinoculation presence specific sirnas derived two ihprnas transgenic banana plants confirmed northern blotting illumina sequencing small rnas derived transgenic banana plants present study represents important effort proving host induced post transcriptional ihprna mediated gene silencing vital fungal genes confer efficient resistance debilitating pathogens crop plants
ependymomas represent pediatric brain tumors recent classification pathology enriched localization molecular biology whatever age total removal one several looks required remains major prognostic factor children focal radiation remains standard role chemotherapy matter randomized studies infants front line chemotherapy standard inclusion siop ependymoma protocol encouraged case relapse surgery radiation advised inclusion innovative trials including irradiation phase encouraged better understanding underlying mechanisms ependymoma cell provide close future key use targeted therapies time relapse soon first line therapy subgroups patients
nicotinamide adenine dinucleotide nad dependent deacetylase demalonylase desuccinylase sirtuin sirt host cells reportedly observed mitochondria cytosol cytoplasm nucleus various functional roles sirt also described cellular metabolism energy production detoxification oxidative stress apoptosis reported results seemingly inconsistent even contradictory one another using immunocytochemistry molecular biology gene transfection flow cytometry investigated expression subcellular distribution possible functional roles sirt regulating apoptosis oxidative stress cultured neuroblastoma cells endogenous transfected exogenous sirt observed mitochondria host cells overexpression sirt markedly protected cells apoptosis induced staurosporine incubation hank balanced salt solution sirt also lowered level oxidative stress countered toxicity hydrogen peroxide cells suggested anti apoptotic role sirt mediated least part anti oxidative effect neuroblastoma cells although involved molecular mechanisms remain elucidated details
report case extremely rare condition epstein barr virus ebv positive cell lymphoproliferative disease lpd occurred umbilical cord blood transplantation year old japanese man underwent cord blood transplantation male human leukocyte antigen matched donor due acute myeloid leukemia trisomy bone marrow examination day showed chimerism least donor cells complete hematological response chronic symptoms graft versus host disease appeared skin successfully treated cyclosporine alone three years later however patient experienced repeated cold like symptoms hospitalized liver dysfunction high fever developed followed significant edema right side face ebv dna copy number whole peripheral blood liver biopsy showed invasion ebv infected positive cells southern blotting analysis whole peripheral blood showed cell receptor beta rearrangement positive basis results ebv positive cell lpd diagnosed treated prednisolone cyclosporine etoposide followed cyclophosphamide doxorubicin vincristine prednisone however patient died cardiac function failure pneumonia pulmonary hemorrhage unidentified cause cases ebv related lpd hematopoietic stem cell transplantation consist ebv positive cell lpd knowledge novo ebv positive cell lpd subsequent transplantation previously reported
purpose review dermatologic findings may first signs neonatal viral infection review provides update diagnostic features therapies selected viral illnesses herpes simplex virus hsv varicella zoster virus enterovirus zika virus present cutaneous manifestations neonate recent findings hsv dna polymerase chain reaction plasma cerebrospinal fluid routinely used diagnosis neonatal hsv may expanded utility assessing prognosis acyclovir therapeutic efficacy maternal antiviral suppressive therapy may alter clinical appearance congenital hsv resulting delayed diagnosis treatment varizig varicella zoster immune globulin food drug administration approved form prophylaxis varicella centers disease control prevention expanded period varizig eligibility preterm infants group particularly susceptible severe varicella infection severe neonatal enterovirus sepsis results randomized double blind placebo controlled trial pleconaril viral capsid inhibitor suggest compound effective therapy human parechovirus type strain within newly formed viral genus similar potentially underestimated clinical presentation enterovirus sepsis however distinctive erythematous palmoplantar rash may specific human parechovirus type infection perinatal zika virus infection neonate may present nonspecific macular papular rash rash specific obtaining maternal travel history appropriate requesting additional diagnostic testing critical early diagnosis summary neonatal rashes may harmless transient whereas others may reflect presence severe systemic illness recognizing key cutaneous features viral associated rashes may aid prompt accurate diagnosis treatment neonatal viral illnesses
human immunodeficiency virus hiv begins replicate within hosts immune responses elicited escape mutations viral epitopes immunogenic peptide parts presented surface infected cells allow hiv partially evade responses thus rapidly fixation faster fixation higher escape rate larger selective pressure exerted immune system assumed relation underpins rationale using escapes assess strength immune responses however escape rate estimates often obtained employing aggregation procedure several mutations affect epitope aggregated single composite epitope mutation aggregation procedure thus rests upon assumption within epitope mutations indistinguishable effects immune recognition study investigate violation assumption affects escape rate estimates end extend previously developed simulation model hiv accounts mutation selection recombination include different distributions fitness effects dfes inter mutational genomic distances use discrete time wright fisher based model simulate early within host evolution hiv dfes apply standard estimation methods infer escape rates compare true estimated escape rate values also compare escape rate values obtained applying aggregation procedure values estimated without use procedure find across dfes analyzed aggregation procedure alters detectability escape mutations large effect mutations overrepresented small effect mutations concealed effect aggregation procedure similar extracting largest effect mutation appearing within epitope furthermore pronounced exponential decay dfes severely true escape rates underestimated conclude aggregation procedure two main consequences one hand leads misrepresentation dfe fixed mutations hand conceals within epitope interactions may generate irregularities mutation frequency trajectories thus left unexplained
focus brain tumour research shifting towards tumour genesis genetics possible development individualized treatment plans genetic analysis shows recurrent mutation isocitrate dehydrogenase idh gene glioblastoma multiforme gbm cells review evaluated prognostic significance idh mutation basis published evidence multiple retrospective clinical analyses correlate presence idh mutation gbm good prognostic outcomes compared wild type idh systematic review reported similar results based review current literature idh mutation independent factor longer overall survival progression free survival pfs gbm patients compared wild type idh prognostic significance opens new avenues treatment
background emergence expansion tick borne diseases europe asia north america recent years including lyme disease tick borne encephalitis human anaplasmosis primary vectors implicated hard ticks genus ixodes although much known host response bacterial viral pathogens limited knowledge cellular responses infection within tick vector bacterium anaplasma phagocytophilum able bypass apoptotic processes ticks enabling infection proceed however tick cellular responses infection flaviviruses tick borne encephalitis virus tbev louping ill virus liv cause tick borne encephalitis louping ill respectively less clear results infection transcriptional analysis ixodes ricinus tick cell line ire ctvm viruses liv tbev bacterium phagocytophilum identified activation common distinct cellular pathways particular commonly upregulated genes included modulate apoptotic pathways putative anti pathogen genes genes influence tick innate immune response including selective activation toll genes conclusion data provide insight potential key genes involved tick cellular response viral bacterial infection may promote cell survival host resistance
cellular metabolism emerged important regulator adaptive immunity metabolic requirements conventional cells increasingly understood role cellular metabolism foxp regulatory treg cells less clear although well accepted repression akt mtor hif alpha aerobic glycolysis important efficient generation treg cells vitro clear evidence pathways impact treg cell development vivo limited furthermore newer studies shown pathways appear suppress treg cell development active required functionally mature treg cells thus becomes increasingly evident development function regulatory cells require different wiring metabolic pathways finally likely critical differences remain uncovered metabolism resting naive treg cells fully differentiated actively engaged suppression comment briefly discuss current understanding treg cell metabolism need address area new approaches based vivo models
human mutt homolog mth detoxifies oxidized dna precursor oxo deoxyguanosine triphos phate serves tumor suppressive role distinct types cancer present study expression mth examined various subtypes breast cancer effect suppression breast cancer growth characterized vitro vivo mth mrna protein levels assessed using reverse transcription quantitative polymerase chain reaction immunohistochemistry effect mth expression proliferation breast cancer cells investigated vitro using cell counting kit colony formation assays vivo using breast cancer cell line xenografts mice toxicity mth inhibitor investigated nude mice marked increase mth protein mrna levels demonstrated breast cancer tissues compared non cancerous control however apparent differences mth expression observed distinct molecular subtypes breast cancer mth overexpression demonstrated independent patient age tumor size lymph node metastasis inhibition mth decreased cancer cell viability clonogenic potential cancer cells dose dependent manner results confirmed decreased vivo proliferation mcf mda mda cancer cell lines representing distinct subtypes breast cancer although inhibition mth activity decreased xenograft growth mice major adverse effects detected basis blood biochemistry liver kidney function results present study suggested mth overexpressed majority breast cancers independent molecular identity clinicopathological features tumor including patient age tumor size lymph node metastasis inhibition mth activity suppressed growth three subtypes breast cancer including luminal basal like human epidermal growth factor receptor posi tive vitro vivo treatment mth inhibitor appears safe however studies required prior clinical use mth inhibitors
background infants breast fed benefit formula docosahexaenoic acid arachidonic acid ara amount ara needed support immune function unknown infants carry specific fatty acid desaturase fads polymorphisms may require dietary ara maintain adequate ara status objective aim study determine whether ara intake fads polymorphisms alter ara levels lymphocytes plasma red blood cells term infants fed infant formula methods infants enrolled prospective double blind controlled study infants randomized consume formula containing docosahexaenoic acid ara kcal weeks fatty acid composition plasma phosphatidylcholine phosphatidylethanolamine total fatty acids lymphocytes red blood cells activation markers lymphocytes polymorphisms fads fads determined results lymphocyte ara higher ara formula group ara groups plasma species phosphatidylcholine phosphatidylethanolamine highest lowest ara formula group minor allele carriers fads fads plasma ara content elevated highest level ara consumed cell activation marker elevated infants consumed formula containing ara conclusions ara level plasma reduced low ara consumption minor alleles fads dietary ara may exert immunoregulatory role cell activation decreasing species phospholipids ara intake kcal sufficient maintain cell ara level infants across genotypes
lipids crucial diverse class biomolecules structural heterogeneity plants staggering many aspects plant life manifested mediated lipids recent advances metabolomic lipidomic technologies analysis immensely increased knowledge plant lipidome biosynthesis regulation adaptation remodeling functions roles interactions review recent literature trends lipidomics discuss specific issues pertaining lipidomic research plants lipidomics helped elucidate key issues plant cell biology immunity response stress evolution crop enhancement name elsevier societe francaise biochimie biologie moleculaire sfbbm rights reserved
dysregulated expression oncogenic types necessary human papillomavirus hpv driven carcinogenesis hpv mrna situ hybridization ish assay covering common high risk types rish aka hpv rna ish extensively studied anogenital tract validated automated technology herein compare rish dna polymerase chain reaction pcr immunohistochemistry previously available hpv dna ish assay hpv related anogenital head neck neoplasia total squamous intraepithelial lesions cin cin vin invasive squamous cell carcinomas cervical anal well normal reactive cervix samples collected hrrish dna ish immunohistochemistry performed whole formalin fixed paraffin embedded sections rna ish low risk hpv types rish also performed rna dna ish assays used automated systems hpv pcr performed morphology directed formalin fixed paraffin embedded punches rish sensitive pcr neoplasia well morphologically defined anogenital high grade squamous intraepithelial lesion invasive squamous cell carcinoma rish also positive anogenital low grade squamous intraepithelial lesion including cin furthermore subset pcr negative invalid negative lesions positive rish problematic reactive cervix sample normal cervix samples stained results demonstrate rish robust method detection hpvrelated neoplasia provides insight hpv pathobiology performance meets exceeds existing assays anogenital lesions may play role resolving diagnostically challenging cin versus reactive cases
adoptive transfer antigen specific cells adapted investigators treatment cancer technology becoming popular aspects cell vitro preparation cell proliferation addition also well enhancing immunity effect reducing cytotoxicity major advantage adoptive cell therapy act ability efficiently endow patient cells reactivity tumor antigens stable regulated introduction genes encode high affinity tumor targeting cell receptors tcrs synthetic chimeric antigen receptors cars overcome issues immune tolerance limit endogenous adaptive immune response tumor associated antigens taas robust systems genetic modification characterization cells express chimeric antigen receptors cars redirecting specificity produced cases indicated car cells excellent cancer treatment however still many limitations treatment solid malignancies addition toxicity cars cells also serious problem car therapy well present car therapy developed four generations review thus focuses opportunities challenges facing car cells
sialic acid sugar typically found glycan termini glycoproteins mammalian cells lec cho cell mutants deficient epimerase activity due defect gene encodes bifunctional udp glcnac epimerase mannac kinase gne sialic acid modification cell surface partially affected cells mutagenized lec cho cells isolated six mutants termed deficient cell surface expression polysialic acid psa mutant partially defective expression cell surface psa wheat germ agglutinin wga binding five mutants cell surface psa wga binding undetectable psa expression restored complementation gene encoding cmp sialic acid transporter cst indicating cst mutations responsible phenotypes cells characterized cst mutations cells northern blotting pcr carried missense mutations resulting glycine glutamate substitutions amino acids respectively nonsense mutations resulted decreased cst mrna stability carried putative splice site mutation psa cds expression cst deficient lec cells partially rescued cst cst although proteins expressed similar levels localized golgi results indicate novel missense mutations isolated study affect cst activity
structural interactions endoplasmic reticular mitochondrial membranes domains known mitochondria associated membranes mam crucial hubs cellular signaling cell fate particularly inter organelle contact sites allow transfer calcium mitochondria voltage dependent anion channel vdac glucose regulated protein grp inositol triphosphate receptor ipr calcium channeling complex subcellular compartment intense investigation physiological pathological conditions simple sensitive method exists quantify endogenous amount mitochondria contact cells similarly mams highly dynamic structures suitable approach follow modifications mitochondria interactions without protein overexpression report optimized protocol based use situ proximity ligation assay visualize quantify endogenous mitochondria interactions fixed cells using close proximity proteins outer mitochondrial membrane vdac membrane ipr mam interface similar situ proximity ligation experiments also performed grp ipr cyclophilin ipr pairs antibodies assay provides several advantages imaging procedures highly specific sensitive suitable multiple condition testing therefore use situ proximity ligation assay helpful better understand physiological regulations mitochondria interactions well role pathological contexts
clostridium kluyveri unique fermenting ethanol acetate butyrate caproate genes encoding butyrate producing enzymes including electron bifurcating butyryl coa dehydrogenase electron transfer flavoprotein complex nadh dependent reduced ferredoxin nadp oxidoreductase form cluster preceded gene annotated transcriptional regulator rex northern blotting pcr experiments indicated gene cluster forms large transcriptional unit possibly includes several small transcriptional units deduced rex protein contains winged helix dna binding domain rossmann fold potentially interacting nad bioinformatics analysis revealed rex bind promoter regions numerous genes involved carbon energy metabolism including nadh oxidation hydrogen production atp synthesis butyrate formation succinate metabolism rex may regulate transcription genes encoding certain transcriptional regulators transporters electrophoretic mobility shift isothermal titration calorimetry assays revealed rex specifically formed protein dna complexes promoter regions target genes could inhibited nadh restored excess amount nad results suggest rex plays key role carbon energy metabolism kluyveri global transcriptional regulator response cellular nadhinad ratio elsevier rights reserved
objective examine effects feeding bacillus subtilis target inclusion rates colony forming units cfu per cfu per million cfu per intestinal health weaned pigs challenge porcine epidemic diarrhea virus pedv materials methods two three factorial design conducted composed three experimental diets pedv sham challenge sixty day old pigs negative pedv quantitative real time reverse transcription polymerase chain reaction pcr negative pcr porcine reproductive respiratory syndrome virus randomly allocated six treatment groups pigs per group pigs housed groups five solid floor pens treatment diets fed total days including days days pedv challenge sham challenge oral gavage results pathological changes associated pedv significantly less severe challenged treatment groups received subtilis group received subtilis treatment significant differences small intestinal length ratio small intestinal weight body weight colon dry matter content average daily gain fecal scoring six treatment groups
emergence small rnas key potent regulators gene expression prompted need robust detection assay protocols developed investigating generation tissue distribution physicochemical nature rnas allows traditional assay methods employed however due relatively small size endo sirnas key changes protocols required present method nonradioactive detection endo sirnas mouse tissue microinjected xenopus oocytes method comprises steps rna extraction page low stringency northern blotting using dig labelled rna probes moreover includes strategy design generate cheap hybridization probes greatly increased sensitivity methods may used simple robust protocol nonradioactive detection small rnas combined strategies potentially enhance signal intensity
mesenchymal stromal cell msc application coxsackievirus cvb induced myocarditis reduces myocardial inflammation fibrosis exerts prominent extra cardiac immunomodulation improves heart function although abovementioned findings demonstrate benefit msc application mechanism msc immunomodulatory effects leading final cardioprotective outcome viral myocarditis remains poorly understood monocytes known trigger myocardial tissue inflammation present study aims investigating direct effect msc mobilization trafficking monocytes heart cvb induced myocarditis one day post cvb infection cbl mice intravenously injected msc sacrificed days later molecular biology flow cytometry analysis msc application reduced severity myocarditis heart blood pro inflammatory lyc high lyc middle monocytes retained spleen anti inflammatory lyc low monocytes increased blood heart spleen msc treated cvb mice cvb infection induced splenic myelopoiesis msc application slightly diminished spleen myelopoietic activity cvb mice left ventricular mrna expression chemokines monocyte chemotactic protein mcp mcp ccl adhesion molecules intercellular adhesion molecule vascular cell adhesion molecule pro inflammatory cytokines interleukin interleukin tumor necrosis factor pro fibrotic transforming growth factor circulating mcp mcp levels decreased cvb msc mice stromal cell derived factor rna expression systemic levels fractalkine increased cvb msc mice msc application cvb induced myocarditis modulates monocytes trafficking heart could promising strategy resolution cardiac inflammation prevention disease progression
causes consequences among individual variation covariation behaviours substantial interest behavioural ecology proximate mechanisms underpinning variation still unclear previous research suggests metabolic rate potential proximate mechanism explain behavioural covariation measured resting metabolic rate rmr boldness exploration western stutter trilling crickets gryllus integer selected differentially short fast development two generations applying mixed effects models reveal sign covariation applied structural equation models individual level covariance matrix examine whether rmr generates covariation measured behaviours traits showed among individual variation covariation rmr boldness positively correlated rmr exploration negatively correlated boldness exploration negatively correlated however rmr causal factor generating covariation boldness exploration instead covariation three traits explained another unmeasured mechanism selection lines differed measured traits significantly affected covariance matrix structure traits suggesting genetic component trait integration results emphasize interpretations made solely correlation matrix might misleading
sublingual immunotherapy slit treatment allergic respiratory diseases demonstrated efficacy safety several formulations slit available worldwide treatment allergic rhinitis grass tablets containing group major allergen reduced combined symptoms medication use treatment years follow years ragweed pollen tablets ambrosia artemisiifolia liquid extracts ambrosia artemisiifolia reduced combined symptoms medication use respectively house dust mite tablets containing index reactivity dermatophagoides pteronyssinus dermatophagoides farinae reduced symptoms treatment year follow year respectively different house dust mite tablet standardized quality house dust mite able reduce risk asthma exacerbation compared placebo hazard ratio adverse events local mild moderate severity slit products reviewed herein effective doses range major allergen however allergen content uniformly standardized expressed arbitrary proprietary units depending manufacturer assays determination allergen content highly variable thus results one study given product extrapolated products despite limitations clinical management review aims provide practitioners relevant information dosing selected slit formulations treatment allergic respiratory disease american academy allergy asthma immunology allergy clin immunol pract
use combination liquid chromatography quadrupole time flight mass spectrometry tof urine metabolic profiling find identify metabolites dextromethorphan common counter otc cough suppressant next use combination ion masses fragmentation retention times determine dextromethorphan metabolites surface water impacted wastewater prior study neither dextromethorphan metabolites reported surface water spite common use various otc medications found concentration dextrorphan metabolite surface water greatly exceeded parent compound factors times reflects urine profile parent compound approximately total excreted drug based ion intensities urine profiling also indicated glucuronide metabolites major phase products total urine completely hydrolyzed wastewater dextrorphan demethyldextrorphan phase metabolites kind reversal human metabolism elsevier rights reserved
background replication factor contains four active aaa atpase sites results mutation one atp binding site affects clamp loader activities conclusion although atp sites may fill sequentially atp binding four sites needed rfc activity significance provides insight atp dependent conformational changes rfc drive clamp loading reaction clamp loaders belong family proteins known atpases associated various cellular activities aaa proteins utilize energy atp binding hydrolysis perform cellular functions clamp loader required load clamp onto dna use dna polymerases increase processivity atp binding hydrolysis coordinated several key residues including conserved lys located within walker motif loop residue required subunit bind atp specific function atp molecule bound saccharomyces cerevisiae clamp loader unknown series point mutants lacking single walker lys residue generated study effects abolishing atp binding individual clamp loader subunits variety biochemical assays used analyze function atp binding discrete steps clamp loading reaction mutants reduced clamp binding opening different degrees decreased clamp binding activity generally correlated decreases population open clamps suggesting differences binding affinities walker mutants stem differences stabilization proliferating cell nuclear antigen open conformation walker mutations smaller effect dna binding clamp binding opening data support model atp site functions independently regulate different step clamp loading cycle coordinate steps instead atp sites work unison promote conformational changes clamp loader drive clamp loading
imminent depletion fossil fuels surging global demand renewable energy led search nonconventional energy sources decades trial error world testing sources third generation fossil fuels contain parts microalgae oil content adaptable growth parameters highly versatile microalgae highly promising sources biofuels present time present article makes sweeping attempt highlight various methods employed cultivation microalgae techniques harvest extract biomass huge algal cultures well downstream production processing procedures advantages limitations challenges faced described extent major concerns pertaining biofuels supposed environmental sustainability economic viability along cost effectiveness would require great deal empirical data existing systems great deal optimization generate robust one concluded article swot analysis using algae biodiesel production tabulated form international union biochemistry molecular biology inc
chemistry already pioneered ancient egyptians years ago despite age chemistry means dying scientific discipline different branches study within chemistry infiltrated fields life science research nobody work area without using chemistry broadest sense present article personal view chemistry supports life science research particular field nutrition metabolism research provides insight chemistry close collaboration life science research helps fill gaps current fragmentary understanding comprehensive knowledge required better understanding molecular details metabolism health disease aging important contributions chemical disciplines studies respect systems biological description human nutrition metabolism outlined
aimthe primary aim study evaluate pathogens associated peri implantitis inner part implant connections peri implant periodontal pockets patients suffering peri implantitis participants healthy peri implant tissues secondary aim estimate predictive value microbiological profile patients wearing dental implants using data mining methods material methodsfifty participants included present casecontrol study scheduled collection plaque samples peri implant pockets internal connection periodontal pocket real time polymerase chain reaction performed quantify pathogens three predictive models developed using decision trees estimate predictive value microbiological profile three experimental sites resultsthe final sample included patients healthy controls diseased cases implants healthy peri implant tissues affected peri implantitis total mean pathogen counts inner portions implant connection peri implant periodontal pockets generally increased peri implantitis patients compared healthy controls inner portion implant connection periodontal pocket peri implant pocket respectively presented predictive value microbiologic profile accuracy conclusionthis study showed microbiological profile three experimental sites differently characterized patients suffering peri implantitis healthy controls data mining analysis identified parvimonas micra highly accurate predictor peri implantitis present peri implant pocket method generally seems promising diagnosis complex infections
interaction epidermal growth factor receptor egfr signaling ganglioside expression previously described however little known egfr neugcgm expression cancer patients therapeutic implications paper evaluate expression egfr neugcgm ganglioside tumors patients two spontaneous lung metastasis models mice lewis lung carcinoma cbl mammary carcinoma balb results expression egfr neugcgm ganglioside frequently observed patients independently histological subtype moreover egfr expressed neugcgm ganglioside metastasis murine models dual expression appears therapeutically relevant since combined therapy mabs two molecules synergistically increase survival mice treated overall results suggest neugcgm egfr may coordinately contribute tumor cell biology therapeutic combinations two targets might valid strategy explore
forest harvesting operations may significant impact soil physical properties reducing porosity organic functions soil variations particular bulk density total porosity caused external perturbations soil becomes compacted due machinery passes lead changes biogeochemical cycles consequences soil ecosystems study investigated impact forest operations elapsed time harvest influence physical chemical characteristics soil nitrogen fixing nitrifying microbial communities study area located inside regional park migliarino san rossore massaciuccoli pisa italy study area soil classified recent sands sandy loam texture slightly calcareous usda soil taxonomy classification soil samples collected patchy cut areas strip cut pinus pinea stand harvested two steps half area rest soil samples collected also control area harvested similar stand soil characteristics statistical analysis preceded test normality kolmogorov smirnov test variance homogeneity test levene test considering dependence variables studied physical chemical soil characteristics manova test post hoc tukey hsd test applied determine statistical difference among three treatments harvested harvested harvested results indicate significant variations parameters shear penetration resistance though soil bulk density total porosity significantly altered short period since forestry operations occurred physical changes induced qualitative presence absence number species quantitative abundance spatial evenness species variations nitrogen fixing nitrifying microbial communities
orthodontic tooth movement periodontal ligament pdl exposed continuous mechanical strain however many researchers applied cyclic tensile strain continuous tensile strain pdl cells vitro adequate device apply continuous tensile strain cultured cells study contrived novel device designed apply continuous tensile strain cells culture continuous tensile strain applied human immortalized periodontal ligament cell line hpl cells cytoskeletal structures hpl cells examined immunohistochemistry expression inflammatory osteogenic markers also examined real time reverse transcription polymerase chain reaction osteogenic protein osteopontin opn also detected western blot analysis actin filaments hpl cells showed uniform arrangement continuous tensile strain continuous tensile strain increased expression inflammatory genes beta cox tnf alpha osteogenic genes runx opn hpl cells also elevated expression opn protein hpl cells results suggest new simple device useful exploring responses continuous tensile strain applied cells
rolling circle amplification rca isothermal amplification technique high efficiency perfect accuracy nucleic acids detection however rca technique suffers limitation detect short dna rna molecules long nucleic acid molecules enzymatic restriction well heat denaturation process usually required makes amplification effective strictly isothermal article simple efficient one pot self primed isothermal amplification sia developed detection genomic dna directly based combination nicking endonuclease assisted strand displacement amplification sda exponential rca virtue numerous nicking sites genome pre amplification whole genome performed sda specific cleaving nicking endonuclease meanwhile single strand dna hpv target sequence generated sda could hybrid circle probe primer trigger exponential rca result existence nicking endonuclease reaction temperature enzyme amplification could operated one pot reaction solution amplification added electrode hybridization sulfydryl probe achieve electrochemical signal based isothermal amplification genotyping hpv detection hpv hela cell line attempted satisfied results approach promising tool pathogene detection clinical diagnostics research
aim present study investigate association methylation cyclin dependent kinase inhibitor cdknb cpg islands telomerase activity children acute lymphoblastic leukemia total children children immune thrombocytopenia itp subjected bone marrow aspiration methylation specific polymerase chain reaction analysis modified telomeric repeat amplification protocol assay analyses evaluate cdknb methylation telomerase activity respectively results present study demonstrated children exhibited cdknb methylation diagnosis whereas exhibited cdknb methylation however cdknb methylation detected itp controls furthermore mean level telomerase activity total product generated tpg units children significantly increased compared tpg units itp controls mean levels telomerase tpg units children without cdknb methylation respectively therefore children exhibited significantly increased levels telomerase increased telomerase activity significantly associated increased risk childhood total children methylated cdknb children unmethylated cdknb exhibited increased telomerase activity tpg units results present study suggest hypermethylation cdknb cpg islands hyperactivity telomerase common events childhood hypermethylation cdknb cpg islands significantly associated upregulated telomerase activity
drosophila ovary recognized one best model systems study stem cell biology vivo previously identified autonomous role histone germline stem cell gsc maintenance found histone depletion escort cells ecs resulted increase spectrosome containing cells sccs ovary tumor like phenotype analysis showed dpp pathway excessively activated scc cells expression bam attenuated depleted ecs transposon activity dna damage increased dramatically followed apoptosis consistent role somatic cells surprisingly depleted ecs acquired cap cell characteristics including dpp expression resulting abnormal dpp level inhibits scc differentiation interestingly double knockdown dpp ecs reduce number sccs normal level indicating additional dpp secreted ecs contributes germline tumor taken together findings indicate histone important epigenetic factor controlling characteristics key suppressor germline tumor
heparin induced thrombocytopenia hit serious drug reaction leads decrease platelet count high risk thrombosis hit patients produce pathogenic immunoglobulin igg antibodies bind complexes platelet factor heparin hit immune complexes crosslink receptors resulting platelet monocyte activation events lead release procoagulant chemokines tissue factor together create intensely prothrombotic state hit represents atypical immune response features cell dependent cell independent mechanisms disorder characterized newly formed anti heparin igg antibodies characteristic cell dependent mechanism however exposure heparin months hit lead memory response consistent cell independent mechanism review discuss immunobiological events explain features including role cell dependent cell independent mechanisms hit antibody generation immunogenic characteristics heparin antigen concept temporary loss immune regulation contributing onset hit also present novel immunobiological model explain atypical immune response characteristic hit
thiamin pyrophosphate tpp essential carbohydrate metabolism forms life tpp dependent decarboxylation reactions oxo acid substrates result enamine adducts thiazolium moiety coenzyme decarboxylated substrate central enamine intermediates experience different fates protonation pyruvate decarboxylase oxidation oxoacid dehydrogenase complexes pyruvate oxidases oxoacid oxidoreductases virtually tpp dependent enzymes including pyruvate decarboxylase assayed electron redox reactions linked ferricyanide oxidation enamines thought occur via electron process oxoacid dehydrogenase complexes wherein acyl group transfer associated reduction disulfide lipoamide moiety however discrete electron steps occur oxidoreductases one clusters mediate electron transfer reactions external electron acceptors radical intermediates detected absence acyl group acceptor coenzyme coash electron system thiazolium ring stabilizes radical extensively delocalized character radical evidenced quantitative analysis nuclear hyperfine splitting tensors detected electron paramagnetic resonance epr spectroscopy electronic structure calculations second electron transfer step markedly accelerated presence coash details second electron transfer step facilitation coash remain elusive expected redox properties potential intermediates limit possible scenarios article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
study first comprehensive report molecular cloning structural characterization sequence comparison wild mutant types copy number genome expression features activities gene encoding enolpyruvylshikimate phosphate synthase epsps korean lawn grass zoysia japonica full length cdna epsps korean lawn grass zjepsps obtained race method containing orf leader sequence utr utr eventually decoded amino acid residues molecular mass kda southern blot detection zjepsps showed gene exists single copy korean lawn grass genome sequence comparison zjepsps gene demonstrated glyphosate tolerant mutant pro ser substitution gene seems preferred binding activity enzyme phosphoenol pyruvate pep glyphosate allows continuous synthesis aromatic amino acids shikimate pathway northern blotting analysis zjepsps found highly expressed continuous increase hours glyphosate treatment wild mutant samples fold higher epsp synthase activity observed tolerant mutant exposed glyphosate treatment molecular information zjepsps gene obtained study needs dissected effectively applied development gene specific dna markers zoysiagrass cultivars nevertheless glyphosate tolerant mutant featured zjepsps gene provided turfgrass managers weed problems timely adoptable management options
germline brca mutations first known cause inherited familial pancreatic ductal adenocarcinoma pdac tumor third frequent cancer carriers germline brca mutations occurs around brca families pdac known one highly lethal cancers mainly chemoresistance frequently late diagnosis based recent developments molecular biology subgroup brca associated pdac created allowing screening early surgical treatment personalized systemic treatment brca germline mutation carriers first degree relative blood relatives pdac undergo screening regular follow based magnetic resonance imaging endoscopic ultrasound goal screening detect early invasive pdac advanced precancerous lesions suitable stepwise surgical complete resection increasing evidence molecular role brca protein homologous recombination dna damages suggest brca related pdac sensitive agents causing dna cross linking damage platinum salts treatments targeting rescue dna repair pathways poly adp ribose polymerase inhibitors currently investigation
introduce versatile carrier system vitro vivo immune stimulation based soft matter dna nanoparticles nps incorporation lipid modified nucleotides dna strands enables formation micelles uniform size single self assembly step micelles equipped immune adjuvant cpg motifs fluorescent probes immunological effects cpg confined surface studied comprehensive manner animal experiments dose dependent activation spleen dendritic cells dcs cpg conjugated observed accompanied pronounced regulation stimulatory molecule cytokine production elsevier ltd rights reserved
field science medicine today remains untouched big data psychiatry exception proteomics big data technology next generation biomarker supporting novel system diagnostics therapeutics psychiatry proteomics technology fact much older genomics dates well launch international human genome project genome long framed master elite executive molecule cell biology proteome contrast humble yet proteome critical life ensures daily functioning cells whole organisms short proteins blue collar workers biology earth molecules live without since proteomics found renewed meaning international attention launch human proteome project growing interest big data technologies proteomics article presents interdisciplinary technology foresight analysis conceptualizes terms environtome social proteome define environtome entire complement elements external human host microbiome ambient temperature weather conditions government innovation policies stock market dynamics human values political power social norms collectively shape human host spatially temporally social proteome subset environtome influences transition proteomics technology innovative applications society social proteome encompasses example new reimbursement schemes business innovation models proteomics diagnostics depart life time genotypic tests anticipated hype attendant context time sensitive proteomics tests building nesting principle governance complex systems discussed elinor ostrom propose tiered organizational architecture big data science proteomics proposed nested governance structure comprised scientists ethicists scholars nascent field ethics ethics aims cultivate robust social proteome personalized medicine ostrom often noted nested governance designs offer assurance political power embedded innovation processes distributed evenly concentrated disproportionately single overbearing stakeholder person agree assessment conclude underscoring synergistic value social biological proteomes realize full potentials proteomics science personalized medicine psychiatry present era big data
immunity represents important defense mechanism pathogens intimately linked fitness previous studies found significant interindividual variation immune responses wild populations emphasized importance ecological factors explaining variability deterioration environmental conditions agricultural intensification modify resource availability result alter immune functions aim study investigate effect agricultural intensification innate immune functions breeding adult tree swallows tachycineta bicolor investigated relationship agricultural intensification bacteria killing ability bka strain coli also assessed presence number bacteria surface eggshells changed agricultural intensification contrary expectations found positive relationship agricultural intensification bka individuals higher bka intensive compared nonintensive farmlands trend observed study also found tendency reduction bka time found relationships presence number different types eggshell bacteria agricultural intensification association bka females eggshell bacteria clutch results suggest differences immune function observed intensive nonintensive farmlands could reflect genetic differences among individuals trade offs traits expressed among habitats within study system
peroxisome proliferator activated receptor gamma coactivator alpha plays crucial role regulating biosynthesis mitochondria closely linked energy metabolism various tumors study investigated regulatory role peroxisome proliferator activated receptor gamma coactivator alpha pathogenesis hepatocellular carcinoma study changes peroxisome proliferator activated receptor gamma coactivator alpha messenger rna levels normal human liver hepatocellular carcinoma tissue examined quantitative reverse transcription polymerase chain reaction knockdown peroxisome proliferator activated receptor gamma coactivator alpha conducted rna interference human liver cell line overexpression peroxisome proliferator activated receptor gamma coactivator alpha conducted adenovirus encoding peroxisome proliferator activated receptor gamma coactivator alpha complementary dna human hepatocarcinoma cell line hepg cellular morphological changes observed via optical electron microscopy cellular apoptosis determined hoechst staining addition expression levels genes tissues cells detected microarray shown peroxisome proliferator activated receptor gamma coactivator alpha expression significantly downregulated hepatocellular carcinoma compared normal liver tissues knockdown peroxisome proliferator activated receptor gamma coactivator alpha expression cells cells reverted immature dedifferentiated morphology exhibiting cancerous tendency apoptosis occurred hepg cells transfection adenovirus encoding peroxisome proliferator activated receptor gamma coactivator alpha microarray analysis showed consistent results results suggest peroxisome proliferator activated receptor gamma coactivator alpha acts tumor suppressor formation development hepatocellular carcinoma peroxisome proliferator activated receptor gamma coactivator alpha may potential therapeutic target hepatocellular carcinoma
eukaryotes rna silencing encompasses range biochemical processes mediated similar small rnas smrnas chapter describes northern blot hybridization techniques optimized detection smrnas whether extracted plant animal tissues basic protocol described control blots illustrate detection specificity sensitivity method using dna oligonucleotide probes known endogenous smrnas analyzed samples prepared several model plant species including arabidopsis thaliana nicotiana benthamiana oryza sativa zea mays physcomitrella patens well animals drosophila melanogaster miss musculus finally usefulness northern blotting dissecting smrna biogenesis shown particular case dna virus infection
objectiveto compare counts aggregatibacter actinomycetemcomitans prevotella intermedia porphyromonas gingivalis fusobacterium nucleatum crack users non users materials methodsa cross sectional study conducted involving seventy four crack cocaine users eighty one non users matched age gender tobacco use demographic clinical variables analysed subgingival bacterial samples collected four sites greatest probing depths analysed using real time polymerase chain reaction resultsno significant difference found prevalence total counts bacterial species analysed groups however crack users greater probability higher counts percentile aggregatibacter actinomycetemcomitans porphyromonas gingivalis prevotella intermedia fusobacterium nucleatum respectively conclusionalthough crack users higher percentile bacterial counts aggregatibacter actinomycetemcomitans porphyromonas gingivalis prevotella intermedia fusobacterium nucleatum total counts differ crack users non users leading hypothesis higher occurrence periodontitis crack users may related non bacterial factors
nine italian peach nurseries use agrobacterium rhizogenes strain protect plants crown gall monitored three years aim determining whether transconjugant populations may arise following plasmid exchanges autochtonous soil agrobacteria six hundred seventy eight agrobacterium isolates obtained tumours developed apricot peach rootstocks treated pre planting antagonist agrobacteria characterized pathogenicity biovar opine catabolism agrocin sensitivity colony hybridization used screening isolates harbouring plasmids pti pagk analysis plasmid content southern blotting performed putative transconjugant agrobacteria found tumours collected one nursery biological control breakdown observed rflp analysis igs regions showed pagk transferred antagonist virulent avirulent soil agrobacteria belonging different ribotypes pathogenic transconjugants inoculated rootstocks controlled vivo stably maintained pti pagk bacterial cells least one year end biocontrol trial new transconjugant tumorigenic agrobacteria originated transfer pagk pathogen virulent avirulent transconjugants may represent real threat biological control strain since produced agrocin insensitive survival soil populations could make future application ineffective
intestinal subepithelial myofibroblasts semfs specific population cells involved intestinal inflammation carcinogenesis via elaborate network cytokines chemokines inflammatory factors including pge sphingosine phosphate implicated important mediator inflammation cancer certain cell types increases cyclooxygenase cox expression present study aimed assess involvement cox expression semfs primary semfs obtained cbl mouse identity verified fluorescent staining specific marker proteins expression receptors sphingosine kinases semfs determined pcr analysis cox expression pge production assayed western blotting elisa respectively cox mrna stability assayed northern blotting produced dose dependent increase cox expression resulting increased pge release semfs using specific inhibitors show actions erk ikk pkc involved induced cox expression hand pkc lesser roles beta induced cox expression inhibition sphingosine kinase block production affect beta induced cox expression amplified beta induced activation cox expression pkc inhibition blocked amplified cox expression addition increased cox mrna stability semfs amplifies beta induced cox expression increased mrna stability observations point involvement activation semfs may contribute intestinal inflammation carcinogenesis
objectives aimed study antitumor effects ppar gamma agonist pioglitazone human retinoblastoma methods effects pioglitazone cell proliferation apoptosis human retinoblastoma cells investigated mtt assay hoechst staining assay apoptosis related protein levels detected western blot inflammationary factors analysis evaluated western blot elisa effect pioglitazone nuclear factor kappa kappa dependent reporter gene transcription induced lps analyzed luciferase assay human retinoblastoma cells subcutaneously transplanted balb nude mice animals treated pioglitazone verify antitumor effect vivo results data revealed pioglitazone suppressed viability cells dose time dependently induced apoptosis cells vitro molecular biology analysis found pioglitazone could affect apoptosis inflammation related signal via modulating activity kappa signal also found pioglitazone could markedly reduce growth cells transplanted mice without causing significant side effects conclusions results suggested pioglitazone demonstrated antitumor activity human retinoblastoma cells inhibiting cell growth inducing apoptosis modulating kappa pathway thus delayed tumor growth vivo
objective phthalates commonly used render plastics soft flexible materials also determined developmental reproductive toxicants human animals purpose study evaluate effect mono ethylhexyl phthalate mehp ethylhexyl phthalate dehp oral administrations maturation mouse oocytes apoptosis gene transcription levels materials methods experimental study immature oocytes recovered naval medical research institute nmri mouse strain weeks divided seven different experimental control groups control group oocytes retrieved mice received normal saline experimental groups iii oocytes retrieved mice treated dehp solution respectively experimental groups oocytes retrieved mouse exposed mehp solution respectively fertilization embryonic development carried omm medium apoptosis assessed annexin fitc dead cell apoptosis kit staining addition mrna levels pouf ccna asah examined oocytes finally mouse embryo early blastocyst stage stained acridine orange ethidium bromide order access viability results proportion oocytes progressed metaphase mii cells embryo formation stage significantly decreased exposure mehp dehp dose dependent manner annexin positive oocytes showed greater quantity treated mice control quantitative reverse transcriptase polymerase chain reaction qrt pcr revealed expression levels pouf asah ccna significantly lower treated mouse oocytes control total cell count blastocyst developed treated mouse oocytes lower controls conclusion results indicate oral administration mehp dehp could negatively affect mouse oocyte meiotic maturation development vivo suggesting phthalates could risk factors mammalians reproductive health additionally phthalate induced changes pouf asah ccna transcription level could explain part reduced developmental ability mouse treated oocytes
nutrition plays important role human metabolism health metabolomics promising tool clinical genetic nutritional studies key question extent metabolomic profiles reflect nutritional patterns epidemiological setting assessed relationship metabolomic profiles nutritional intake women large cross sectional community study food frequency questionnaires ffqs applied women twinsuk cohort targeted metabolomic analyses serum samples using biocrates absolute idq kit metabolites analyzed seven nutritional parameters coffee intake garlic intake nutritional scores derived ffqs summarizing fruit vegetable intake alcohol intake meat intake hypo caloric dieting traditional english diet studied correlation metabolite levels dietary intake patterns larger population identified trait independent monozygotic twins pairs discordant nutritional intake replicated results set results analyses meta analyzed metabolites associated nutritional patterns calculated heritability using structural equation modelling metabolite nutrient intake associations statistically significant discovery samples bonferroni metabolite nutrient intake associations remained significant validation found strongest associations fruit vegetables intake glycerophospholipid phosphatidylcholine diacyl sphingolipid sphingomyeline also found significant associations coffee confirming previous association reported independent study garlic intake hypo caloric dieting using twin study design find two thirds metabolites associated nutritional patterns significant genetic contribution remaining third solely environmentally determined data confirm value metabolomic studies nutritional epidemiologic research
metabolomic analysis feces provide useful insight metabolic status health disease state human animal symbiosis gut microbiome result recently increased interest application holistic analysis feces biomarker discovery metabolomics applications sample preparation process used prior analysis fecal samples high importance greatly affects obtained metabolic profile especially since feces matrix diversifying physicochemical characteristics molecular content however still little information literature lack universal approach sample treatment fecal metabolic profiling scope present work study conditions sample preparation rat feces ultimate goal acquisition comprehensive metabolic profiles either untargeted nmr spectroscopy targeted hilic fecal sample pooled male female wistar rats extracted various conditions modifying value nature organic solvent sample weight solvent volume ratio found ratio provided highest number metabolites neutral basic conditions untargeted profiling techniques concerning profiles neutral acetonitrile propanol provided higher signals wide metabolite coverage though extraction efficiency metabolite dependent elsevier rights reserved
backgroundthere increasing popularity high power lasers surgical debridement antimicrobial therapy management peri implantitis periodontal therapy removal noxious foci would naturally promote tissue healing directly however also anecdotal reports better healing around routine high power laser procedures precise mechanisms mediating effects remain fully elucidated work examines low dose laser bystander effects oral human epithelial fibroblasts particularly focusing role human defensin hbd defba potent factor capable antimicrobial effects promoting wound healing material methodslaser treatments performed using near infrared laser diode low doses normal human oral keratinocytes fibroblast cells used hbd mrna protein expression assessed real time polymerase chain reaction western blotting immunostaining role transforming growth factor tgf signaling process dissected using pathway specific small molecule inhibitors resultswe observed laser treatments robustly induced hbd expression oral fibroblast cell line compared keratinocyte cell line low dose laser treatments results activation tgf pathway mediated hbd expression two arms tgf signaling smad non smad involved laser mediated hbd expression conclusionslaser activated tgf signaling induced expression hbd individually capable promoting healing tissues adjacent high power surgical laser applications moreover use low dose laser therapy provide additional therapeutic benefits effective clinical management periodontal peri implant disease
background present metaphase mii oocytes special structure leads complex difficulties associated vitrification efficacy still needs large amount study observe present study investigate whether transient hydrostatic pressure thp utilized oocytes vitrification positive effect oocytes developmental ability reactive oxygen species damage meiotic spindle zona pellucida dna copy number methods immature oocytes used research collected february december shanghai genetics ivf institute mii oocytes originated metaphase oocytes randomly distributed three groups fresh oocytes vitrification vitrification thp treatment embryo developmental outcome evaluated intracytoplasmic sperm injection embryo culture furthermore meiotic spindle behavior reactive oxygen species ros zona pellucida dna copy number variation evaluated compared among three groups results total mii oocytes included study embryos group fewer cells day compared group group group group developmental feature blastocyst groups superior group mii oocytes manipulated thp vitrification equilibration time significantly shorter vitrification procedure ros vitrified warmed oocytes group improved thp vitrification thp influence meiotic spindle dna copy number variation vitrified warmed oocytes conclusions results study indicated sublethal thp treatment vitrification increased developmental competence human vitro matured oocytes reduced vitrification related changes ros occurred oocyte vitrification damage meiotic spindle dna copy number variation elsevier inc rights reserved
association transportation occurrence bovine respiratory disease complex brdc long recognised many hypotheses regarding association declared past decades agreed upon researchers multiple stressors calves experience transportation result overall immunosuppression allows respiratory tract invaded numerous opportunistic pathogens furthermore innate immune cells neutrophils may trapped paradox whereby crucial defence pathogen killing activities counteracted excessive inflammation tissue damage may exacerbate disease including brdc neutrophilia response glucocorticoids attributed influx immature neutrophils newly released bone marrow decrease neutrophil margination along endothelial walls decrease neutrophil apoptosis several explanations confirmed altered expression genes proteins important neutrophil margination apoptosis
commonality antibiotic usage medicine means understanding resulting consequences host vital antibiotics often decrease host microbiome community diversity alter microbial community composition many diseases antibiotic associated enterocolitis inflammatory bowel disease metabolic disorders linked disrupted microbiota complex interplay host microbiome antibiotics needs tractable model studying host microbiome interactions freshwater vertebrate fish serves useful model investigating universal aspects mucosal microbiome structure function well analyzing consequential host effects altering microbial community methods include host challenges infection known fish pathogen exposure fecal soil microbes osmotic stress nitrate toxicity growth analysis measurement gut motility techniques demonstrate flexible useful model system rapid determination host phenotypes
pten induced putative kinase pink identified initially gene upregulated cancer cells regulates cellular processes significance cancer cell biology including cell survival stress resistance cell cycle however expression function pink non small cell lung cancer nsclc determined yet demonstrated high pink expression nsclc tumor tissues cell lines assessed western blot immunohistochemistry ihc assays addition ihc analysis revealed pink expression associated invasive tumor phenotype poor prognosis furthermore vitro studies using upregulation knockdown pink confirmed pink promoted cell proliferation nsclc might pathway moreover also demonstrated downregulation pink enhanced cisplatin cddp induced nsclc cell apoptosis together findings indicate pink plays significant role nsclc progression chemoresistance highlights potential role target future anticancer therapies
since initial report intestinal enteroid culture system powerful tool used study stem cell biology development gastrointestinal tract however major question whether enteroids retain intestinal function physiology significant contributions describing ion transport physiology human intestinal organoid cultures well physiology gastric organoids critical studies dietary fat absorption chylomicron synthesis primary intestinal enteroids undertaken report primary murine enteroid cultures recapitulate vivo intestinal lipoprotein synthesis secretion reflect key aspects physiology intact intestine regard dietary fat absorption also show enteroids used elucidate intestinal mechanisms behind cvd risk factors including tissue specific apolipoprotein functions using enteroids show intestinal apoc iii overexpression results secretion smaller less dense chylomicron particles along reduced triacylglycerol secretion intestine jlr model significantly expands ability test specific genes genetic polymorphisms function dietary fat absorption precise intestinal mechanisms critical etiology metabolic disease
hypertriglyceridemia htg aggravates course acute pancreatitis intestinal barrier dysfunction implicated pathogenesis dysbiosis intestinal microbiota contributes dysfunction intestinal barrier however studies focus changes intestine htg related acute necrotizing pancreatitis anp investigated changes intestinal microbiota paneth cell antimicrobial peptides amps htg related anp hanp rats rats fed high fat diet induce htg anp induced retrograde injection sodium taurocholate biliopancreatic duct rats sacrificed respectively pancreatic ileal injuries evaluated histological scores intestinal barrier function assessed plasma diamine oxidase activity lactate level systemic intestinal inflammation evaluated tumor necrosis factor alpha tnf alpha interleukin beta expression rrna high throughput sequencing used investigate changes intestinal microbiota diversity structure amps alpha defensin lysozyme expression measured real time polymerase chain reaction pcr immunofluorescence results showed compared normal lipid anp nanp groups hanp groups severe histopathological injuries pancreas distal ileum aggravated intestinal barrier dysfunction increased tnf alpha beta expression plasma distal ileum principal component analysis showed structural segregation hanp nanp group alpha diversity estimators hanp group revealed decreased microbiota diversity compared nanp group taxonomic analysis showed dysbiosis intestinal microbiota structure hanp group phyla level candidatus saccharibacteria tenericutes decreased significantly whereas actinobacteria increased genus level allobaculum bifidobacterium parasutterella increased significantly alloprevotella anaerotruncus candidatus saccharimonas christensenellaceae group rikenellaceae gut group ruminiclostridium ruminococcaceae ucg ruminococcaceae ucg decreased compared nanp rats mrna expression lysozyme alpha defensin protein expression lysozyme decreased significantly hanp rats moreover nanp rats hanp rats allobaculum abundance inversely correlated lysozyme expression anaerotruncus abundance positively correlated spearman test conclusion intestinal microbiota dysbiosis decreased amps paneth cells might participate pathogenesis intestinal barrier dysfunction hanp
swine vesicular disease svd first observed italy clinically recognised foot mouth disease fmd svd virus svdv subsequently isolated fmd vaccine trial hong kong beginning spread several european asian countries bulgaria austria italy great britain poland former soviet union ukraine romania france germany belgium switzerland netherlands japan lasted beginning period svd outbreaks sporadic disease almost forgotten flamed netherlands spread several european countries belgium spain portugal italy since svd reported europe almost exclusively italy except two isolated outbreaks portugal since last two svd outbreaks potenza province basilicata region new svd outbreaks reported either italy european country clinical resemblance svd fmd highlights need reliable identification discrimination differentiation fmd though possible clinically feasible appropriate diagnostic tests applied improvements diagnostic techniques making differential diagnosis vesicular disease increasingly affordable feasible easy nowadays portable devices capable rapid accurate differentiation svdv fmdv infections site tests become economical competent laboratory services become accessible restrictions originally imposed svd similarity fmd longer justified together fact recent years svd predominantly asymptomatic makes necessary rethink measures currently place control diagnosis svd therefore decision oie svd chapter removed terrestrial code january consequently european commission informed pirbright institute reference laboratory svd would longer receive financial support moreover position notification requirements ceased january
number identified monogenic causes childhood onset autoimmunity due nodal extranodal lymphoproliferation increased pathogenic genetic variants provide potential pathway specific treatment novel variants also require pathway specific verification report describe year old patient novel variant stat report clinical laboratory findings support stat novel pathogenic stat gain function variant
proved two independent experimental studies group young sportsmen creatine given food supplement interfered metabolism one two carbon units given one dose daily one month induced reciprocal changes muscle mass body fat changes characteristic four proband groups probands divided basis increased decreased level urine increased decreased levels folates vitamin blood comparison results short long term supplementations showed individual deviations found within rank group characteristic person study changes level thiodiglycolic acid urine proved good markers deviations homeostasis
karyotype critical evaluation acute myeloid leukemia aml diagnosis cytogenetic abnormalities detected aml one powerful independent prognostic factors impacts choice treatment clinical trials chromosomes targeted common chromosomal abnormalities recurrent may associated cytological well defined type cases karyotype normal must associated molecular biology studies refine prognosis usefulness karyotype limited follow patient due limited sensitivity still useful clinical management relapse since world health organization classification hematological malignancies integrates cytogenetic data classification aml karyotype therefore mandatory diagnosis aml
quantitative genetics theory predicts adaptive evolution constrained along evolutionary lines least resistance theory hybridization subsequent interspecific gene flow may however rapidly change evolutionary constraints population eventually change evolutionary potential empirical evidence still scarce using closely related species pairs lake victoria cichlids sampled four different islands different levels interspecific gene flow tested potential effects introgressive hybridization phenotypic evolution wild populations found effects differed among study species constraints measured eccentricity phenotypic variance covariance matrices declined significantly increasing gene flow less abundant species matrices diverged line least resistance contrast find decline abundant species overall results suggest hybridization change underlying phenotypic variance covariance matrix potentially increasing adaptive potential populations
background field structural dynamics cytoskeletons living cells gathering wide interest since better understanding cytoskeleton intracellular organization provide insights basic cell biology may also enable development new strategies regenerative medicine cancer therapy fields cytoskeleton dependent dynamics play pivotal role nanoneedle technology powerful tool allowing intracellular investigations directly inserted live cells penetrating plasma membrane causing minimal damage cells precise manipulation using atomic force microscope modifications nanoneedles using antibodies allowed accurate mechanical detection various cytoskeletal components including actin microtubules intermediate filaments however successful penetration nanoneedle plasma membrane shown vary greatly different cell types conditions effort overcome problem improve success rate nanoneedle insertion live cells focused fluidity membrane lipid bilayer may hinder nanoneedle penetration cytosolic environment results aimed reduce apparent fluidity membrane either increasing approach velocity reducing experimental temperatures although changes approach velocity much effect lowering temperature found greatly improve detection unbinding forces suggesting alteration plasma membrane fluidity led increase nanoneedle penetration conclusions operation lower temperature degrees greatly improved success rate nanoneedle insertion live cells optimized approach velocity affect binding antibodies immobilized nanoneedle vimentins mechanical detection experimental parameters applied various cell types results may improve versatility nanoneedle technology cell lines platforms
organophosphorothionates opt one widely used insecticides world agriculture indoor environment therefore large part population may exposed class pesticides either professionally due presence food water residues opts acute toxic effects mediated acetylcholinesterase ache inhibition relatively selective insects however thousands deaths annually reported associated pesticide exposure due opt severe poisoning resulting hyperexcitability nervous system addition long term neurological neurobehavioral effects described associated chronic exposure opt low levels metabolism one main factors determining opt adverse effects opts need bioactivated cytochrome cyp mediated desulfuration phosphate triesters oxons actual powerful inhibitors brain serum ache main detoxification pathways oxon hydrolysis catalyzed plasma oxonases pon sequestration hydrolysis carboxylesterases cyp catalyzed dearylation dealkylation variation activity enzymes involved opt metabolism could expected contribute differences susceptibility opt toxic effects either due genetic polymorphism environmental influence altering bioactivation cletoxication ratio reactions involved opt metabolism humans described paper consequences opt induced toxicity addition identification biomarkers susceptibility interactions among different opts xenobiotics briefly discussed factors influencing risk assessment cumulative effects due opt exposure
evaluated capacity brucella eryc gene diagnostic marker brucellosis quantitative real time pcr eryc gene encodes enzyme erythrulose phosphate dehydrogenase plays important role erythritol metabolism related brucella survival intracellular environment macrophage assay includes internal amplification control iac order avoid false negative results specific analytical sensitivity genome equivalent reactions quantification highly linear efficient pcr efficiency log dynamic range finally applicability assay evaluated artificially contaminated biological matrices implicated transmission bacterium sheep raw milk pig blood eryc iac real time pcr assay allowed detection ten brucella cells per sheep raw milk per pig blood conclusion present alternative detection brucella genus therefore facilitate establishment preventive prophylactic measures food farm environments
background human oxoglutarate dehydrogenase complex comprising components catalyzes conversion oxoglutarate succinyl coa results human generates thiamin enamine derived radical reactive oxygen species superoxide hydrogen peroxide conclusion human produces reactive oxygen species rate succinyl coa physiological conditions significance work presents novel discovery carboxyl group affects enzymatic reactivity oxoglutarate herein reported unique properties human oxoglutarate dehydrogenase multienzyme complex ogdhc rate limiting enzyme krebs citric acid cycle functionally competent oxoglutarate dehydrogenase dihydrolipoyl succinyltransferase components expressed according kinetic spectroscopic evidence stable free radical consistent hydroxy carboxypropylidene thiamin diphosphate thdp cation radical detected electron spin resonance upon reaction oxoglutarate assembled individual components ogdhc unusual stability bound hydroxy carboxypropylidene thiamin diphosphate thdp enamine carbanion first postdecarboxylation intermediate observed probably stabilized carboxyl group reported reaction gave rise superoxide anion hydrogen peroxide reactive oxygen species ros relatively stable enzyme bound enamine likely substrate oxidation leading superoxide anion radical radical specific activity assessed ros formation compared nadh overall complex activity well fraction radical intermediate occupying active centers consistent indicate radical ros formation pathway side reaction comprising less pathway reactivity however nearly ubiquitous presence ogdhc human tissues including brain makes findings considerable importance human metabolism perhaps disease
background base excision repair important pathway cytosine demethylation cpg dinucleotide epigenetic control results deaminated methylcytosine thymine adjacent oxidized guanine dihydro oxoguanine retard base excision repair lesion conclusion altered tandem cpg dinucleotide poor substrate base excision repair significance oxidized guanine cpg dinucleotide interferes active dna demethylation cytosine methylation demethylation tracks cpg dinucleotides epigenetic mechanism control gene expression initial step demethylation process deamination methylcytosine producing tpg alteration mispair step followed thymine dna glycosylase tdg initiated base excision repair ber consideration guanine cpg dinucleotide may become oxidized dihydro oxoguanine oxog could affect demethylation process involving tdg initiated ber however little known enzymology ber altered tandem cpg dinucleotides oxog investigated interactions altered dinucleotide purified ber enzymes dna glycosylases tdg oxog dna glycosylase ogg apurinic apyrimidinic endonuclease dna polymerase dna ligases overall tdg initiated ber oxog dinucleotide significantly reduced specifically tdg dna ligase activities reduced flanking oxog contrast ogg initiated ber pathway blocked due flanking mispair reduces ogg endonuclease dna polymerase activities furthermore tdg initiated ber tdg remains bound product site blocking ogg access adjacent oxog results reveal ber enzyme specificities enabling suppression ogg initiated ber coordination tdg initiated ber tandem alteration cpg dinucleotide
type cytochromes heme becomes covalently attached polypeptide chain reaction vinyl groups heme cysteine thiols protein two cytochromes mitochondria cytochrome cytochrome heme attachment post translational modification catalysed different biogenesis proteins different organisms three types biogenesis system found predicted mitochondria system cytochrome maturation system system iii termed holocytochrome synthase hccs heme lyase system review focuses primarily cytochrome maturation mitochondria containing hccs system iii describes known enzymology substrate specificity hccs role hccs human disease import hccs mitochondria import apocytochromes mitochondria close relationships hccs dependent heme attachment role fungal cytochrome biogenesis accessory protein cyc system also discussed postulated mitochondrial cytochrome biogenesis system trypanosomes related organisms cytochrome biogenesis proteins identified genomes organisms whose type cytochromes also unique mode heme attachment
lipoprotein associated phospholipase pla specifically group viia pla member phospholipase superfamily found mainly associated ldl hdl human plasma pla considered risk factor potential biomarker target therapy treatment cardiovascular disease evidence suggests level pla plasma associated risk future cardiovascular stroke events differential location enzyme ldl hdl lipoproteins suggested affect pla function physiological role abnormal distribution enzyme may correlate diseases although mutagenesis study suggested surface helix residues mediates association pla hdl molecular details mechanism association remained unknown employed hydrogen deuterium exchange mass spectrometry characterize interaction recombinant human pla human hdl found specific residues likely mediate hdl binding previous study showed residues important pla liposome interactions find residues show decreased deuteration level pla exposed apoa apoa abundant apoproteins hdl additionally residues affected hdl results suggest apoa phospholipid membranes play crucial roles pla localization hdl cao hsu woods dennis structural basis specific interactions pla hdl revealed hydrogen deuterium exchange mass spectrometry lipid res
corneal immunoimaging neuroimaging approaches facilitate vivo analyses cornea including high resolution imaging corneal immune cells nerves approach facilitates analyses underlying immune nerve alterations detected clinical slit lamp examination alone review describe recent work performed translational ocular immunology center focus bench bedside bedside bench research ability visualize dendritiform immune cells dcs patients laser vivo confocal microscopy ivcm recently discovered central murine cornea allowed demonstrate utility potential surrogate biomarker inflammatory ocular surface diseases biomarker inflammation allows measurement therapeutic efficacy anti inflammatory drugs utility endpoint clinical trials high interobserver agreement ivcm image analyses studies demonstrated significant increase density size ocular disease positive correlation density clinical signs symptoms disease pro inflammatory tear cytokines strong negative correlation density subbasal nerve density conjunction preclinical research investigating inflammatory state partial fully denervated cornea results indicated corneal nerves directly involved regulation homeostasis immune privilege cornea
whipple disease rare infectious disease fatal left untreated disease caused infection tropheryma whipplei bacterium may common initially assumed patients present nonspecific symptoms routine cultivation bacterium feasible difficult diagnose infection hand due generic symptoms infection bacterium actually quite often differential diagnosis gold standard diagnosis used periodic acid schiff pas staining duodenal biopsy specimens pas staining poor specificity sensitivity development molecular techniques resulted convenient methods detecting whipplei infections greatly improved diagnosis often missed infection addition molecular detection whipplei resulted increase knowledge pathogenicity review gives overview new insights epidemiology pathogenesis clinical manifestations diagnosis treatment tropheryma whipplei infections
objective uvb irradiation established treatment immunoinflammatory cutaneous disorders shown suppress cutaneous systemic inflammatory diseases modulation adaptive immune response however remains unknown whether uvb irradiation prevents immunoinflammatory disease arteries atherosclerosis approach results show uvb exposure inhibits development progression atherosclerosis atherosclerosis prone mice expanding enhancing functional capacity forkhead box regulatory cells regulating proatherogenic cell responses experimental studies langerhans cell depleted mice revealed epidermal langerhans cells play critical role uvb dependent induction forkhead box regulatory cells suppression proatherogenic cell responses prevention atherosclerotic plaque development conclusions findings suggest skin immune system novel therapeutic target atherosclerosis provide novel strategy treatment prevention atherosclerosis
treatment hemophilia risk developing anti factor viii fviii antibodies inhibitors dominant concern among healthcare providers immune tolerance induction remains effective method eradicating inhibitors approximately patients accompanied significant emotional economical burden certain risk factors type fviii mutation offer insight remains strategy confidently predict development inhibitor moreover even predictive tool existed currently proven protocol tolerance induction previously untreated patient recent years growing body knowledge concerning fundamental immunology inhibitors shed light potential therapeutic interventions review highlight new findings influences translational medicine
study investigated human metabolism excretion dehp intravenous exposure purpose determined five major dehp metabolites urine samples volunteer platelet donation dual needle technique plateletpheresis procedures known cause significant dehp exposure observed sharp increase urinary dehp metabolite concentrations procedure maximum concentrations mehp oxo mehp mepp mehp observed procedure respectively mmhp excreted highest concentrations due longer elimination half times mepp mmhp major metabolites excreted urine exposure cumulative excretion mepp mehp oxo mehp mehp mmhp indicates absolute exposure volunteer dehp related body weight equals dose body weight day indicates current risk preventive limit values dehp rfd epa day tdi european union day exceeded day plateletpheresis amount dose excreted urine distribution metabolites urine elimination characteristics intravenous dehp exposure comparable oral exposure indications toxicokinetic behaviour toxicity dehp fundamentally different two routes exposure therefore toxicological endpoints observed dehp oral application also considered relevant medical procedures causing intravenous dehp exposure like apheresis procedures especially women reproductive age need protected dehp exposures exceeding mentioned preventive limit values
possible altered gene expression patterns bladder tumour carcinogenesis rat bladder cancers induced bbn butyl hydroxybutyl nitrosamine examined cdna microarray analysis gene expression profiles thirty sprague dawley rats given drinking water containing bbn libitum weeks equal numbers control rats given tap water without bbn treatment rat bladders excised rna extraction histopathological examinations total rnas extracted rat transitional cell carcinoma tcc tissues micro dissected normal rat bladder epithelia atlas glass rat microarray used included oligonucleotides rat genes regulated genes rat bladder tccs confirmed northern blotting results showed transcriptions genes significantly elevated rat bladder tccs included fly proto oncogene lipocortin cox cox cathepsin also genes significantly regulated rat bladder tccs included tnfr apoa vhl results cdna microarray analysis demonstrated normal rat bladder epithelia bladder tcc exhibited different specific gene statement profiles increased expressions identified genes may play important role chemically induced bladder carcinogenesis
objective aim present work determine presence various rickettsiae protozoan raw milk assessment potential milk borne route spread selected zoonotic pathogens materials total raw milk samples collected randomly cows goats sheep bred farms situated eight communities eastern poland examined polymerase chain reaction pcr method presence pathogenic rickettsiae coxiella burnetii anaplasma phagocytophilum rickettsia spp protozoan toxoplasma gondii results prevalent pathogen gondii found samples cow milk one sample goat milk one sample sheep milk one sample cow milk positive burnetii however sequence analysis confirm species coxiella coxiella like organisms showed homology psychrobacter alimentarius none examined samples showed presence phagocytophilum rickettsia spp conclusions results study suggest potential hazard milk borne toxoplasma infection mostly consumption raw cow milk milk borne spread seems limited nonsignificant case burnetii phagocytophilum rickettsia spp false positive sample coxiella spp suggests care taken interpretation results obtained using pcr method
regeneration long fascinated humanity documentation progressed simple descriptive observations intense molecular cellular investigations today overarching goal work make key methods tools used modern regeneration stem cell biology research accessible docents students classroom designed series experimental activities accompanying protocols using four inexpensive commercially available planarian species indigenous north america girardia dugesia dorotocephala phagocata morgani phagocata gracilis planarians fast robust regenerators easily maintained classroom activities presented used guide students hypothesis driven experiments range simple manipulations aimed high school students planarian husbandry feeding cutting experiments gene expression protein function analyses suitable college students regeneration time courses complex whole worm situ hybridizations rna interference gene knock experiments described four species cumulatively suggested methods experiments facilitate exploration animal regeneration biology promote curiosity driven hands application scientific method
review examines vast catalytic therapeutic potential offered type oxygen insensitive nitroreductase enzymes partnership nitroaromatic prodrugs particular focus gene directed enzyme prodrug therapy gdept form cancer gene therapy important first indications potential demonstrated years ago enzyme prodrug pairing escherichia coli nfsb aziridin dinitrobenzamide however become apparent enzyme prodrug prototypical pairing limitations impeded clinical progression recently substantial advances made biodiscovery engineering superior nitroreductase variants particular development elegant high throughput screening capabilities enable optimization desirable activities via directed evolution advances enzymology paralleled advances medicinal chemistry leading development second third generation nitroaromatic prodrugs offer substantial advantages nitroreductase gdept including greater dose potency enhanced ability activated metabolite exhibit local bystander effect addition forging substantial progress towards future clinical trials research supporting fields notably development improvement targeted cellular ablation capabilities small animal models zebrafish enable cell specific physiology regeneration studies
mammalian embryonic implantation requires reciprocal interactions implantation competent blastocysts receptive uterus micrornas might play key role embryo implantation mouse let expression profiles rat uterus peri implantation unknown study expression let uterus early pregnancy pseudopregnancy artificial decidualization activation delayed implantation detected northern blotting situ hybridization effect steroid hormones let expression also detected northern blotting situ hybridization found expression level let higher gestation day rats oil let specifically localized glandular luminal epithelia decidua expression let significantly different pseudopregnant uterus increased significantly uteri rats subjected artificial decidualization activation delayed implantation treatment estradiol beta progesterone significantly increased let expression thus let expression significantly induced process embryo invasion increased expression level mainly induced active blastocysts decidualization window implantation implying let may participate endometrial decidualization steroid hormones estradiol beta progesterone stimulated let expression
dihydroflavonol reductase dfr catalyzes reduction dihydroflavonols anthocyanin biosynthetic pathway study obtained full length cdna dfr calibrachoa hybrida cadfr race based technique cdna cadfr open reading frame encodes putative protein amino acids cadfr protein predicted molecular weight value sequence alignment showed cadfr close relationship dfrs species solanaceae family belonged asp type constructed cadfr overexpression vector transformed three cultivars petunia hybrida using agrobacterium mediated method multiple transformants selected presence kanamycin antibiotic verified polymerase chain reaction southern blotting analyses observed bud flower color transgenic petunia altered comparing control plants dfr activities varied color changed transgenic petunias results confirm identity function cadfr suggest integration cadfr used change flower color transgenic plants elsevier rights reserved
ensure lifelong immunocompetency naive memory cells must adequately maintained peripheral lymphoid tissues homeostatic maintenance cells controlled tonic signaling cell antigen receptors common chain cytokine receptors study identify highly expressed microrna mir key regulator naive memory regulatory cell homeostasis conditional deletion mir using lckcre resulted preferential loss peripheral regulatory cells well naive memory cells preferential loss stemmed reduced survival following deficient cytokine signaling stat activation mechanistically insulin receptor substrate irs direct target mir dysregulated irs expression antagonizes stat activation study identifies novel role micrornas fine tuning immune homeostasis thereby maintaining lymphocyte reservoir necessary mount productive immune responses
one key process life cycle pathogens mode reproduction indeed fundamental biological process conditions multiplication transmission genes thus propagation diseases environment reproductive strategies protozoan parasites subject debate many years principally due difficulty making direct observations sexual reproduction genetic recombination traditionally parasites considered characterized preeminent clonal structure nevertheless development elaborate culture experiments population genetics evolutionary population genomics several studies suggested pathogens also characterized constitutive genetic recombination events opinion focused leishmania parasites pathogens responsible leishmaniases major public health issue first discuss evolutionary advantages mixed mating reproductive strategy review evidence genetic exchange finally detail available tools detect naturally occurring genetic recombination leishmania parasites generally protozoan parasites published elsevier
background long term treatment continuous ambulatory peritoneal dialysis capd patients may develop peritoneal fibrosis peritoneal mesothelial cells pmcs participate inflammatory reactions peritoneal cavity transforming growth factor beta tgf beta interleukin beta beta involved peritoneal fibrosis diltiazem used frequently patients capd treat hypertension objectives study examine effects diltiazem collagen beta induced tgf beta production human pmcs signalling pathway diltiazem induction methods human pmcs cultured enzymatic disaggregation human omentum collagen synthesis measured proline incorporation pepsin resistant salt precipitated collagen expression collagen iii tgf beta mrna evaluated northern blotting production tgf beta human pmcs measured immunoassay changes intracellular calcium level adding fura measured fluorescence spectrophotometry western blotting used assess mitogen activated protein kinase mapk signalling proteins results found diltiazem inhibited collagen iii mrna expression collagen syntheses dose dependent basis diltiazem suppressed beta induced tgf beta production human pmcs protein mrna levels diltiazem also inhibited beta induced collagen iii mrna expression intracellular calcium levels change treatment diltiazem beta beta treated human pmcs increased phospho jnk stress activated jun terminal kinase phospho mapk expression diltiazem could suppress phenomenon conclusions diltiazem suppressed collagen synthesis human pmcs inhibited beta induced tgf beta production human pmcs signalling transduction may mapk jnk pathways instead intracellular calcium results suggest diltiazem potential therapeutic regimen preventing peritoneal fibrosis support vivo studies
aims activin newly identified member transforming growth factor beta superfamily assess role activin glucose energy metabolism investigated transcriptional regulation activin liver main methods northern blotting western blotting quantitative real time polymerase chain reaction pcr reporter assays chromatin immunoprecipitation assays used study key findings insulin regulated activin expression mrna protein level hepg cells reporter assays revealed putative functional promoter sequence human activin gene responsible effect insulin mutational analysis promoter revealed ccaat enhancer binding proteins ebps play key role regulating activin expression stimulatory effect insulin activin transcription chromatin immunoprecipitation assays revealed ebps bind activin promoter hepg cells expression activin mrna regulated liver diet induced obese mice significance observations suggest activin plays pathophysiological role glucose metabolism elsevier inc rights reserved
purpose review truncating variants ttn gene ttntv frequently identified patients dilated cardiomyopathy dcm also present apparently healthy people general population consequently considerable uncertainty means single individual ttntv found aim review summarize current evidence implicating ttntv dcm pathogenesis provide interpretative guidelines clinical management recent findings next generation sequencing studies recently demonstrated ttntv present approximately one five patients dcm also individuals general population observations question whether ttntv sufficient alone cause dcm whether ttntv may deleterious others suggested functional effects ttntv predicted location titin protein dcm associated variants typically occurring band region exons highly utilized across range titin isoforms recent data animal cell models suggest developmental defects structural assembly titin deficient sarcomeres provide template mechanical stress induced myocardial dysfunction later life summary ttntv equal variants constitutively expressed exons greatest likelihood pathogenicity clinical significance high impact ttntv likely differ according patient context individual unique suite background genetic factors comorbidities lifestyle factors ttntv identified patients dcm expected major role disease pathogenesis whether unaffected individuals ttntv develop dcm less certain
background papillary ptc medullary mtc thyroid carcinomas represent two distinct entities quite frequently may occur simultaneously aim provide genetic analysis ptc mtc occurring patient ptc mtc elucidate origin methods sequencing analysis ras braf ret oncogenes hot spots mutations tumoral normal tissues ptc mtc patients results two patients affected familial mtc fmtc harboring ret germline mutations tissues eight sporadic cases show somatic mutation three tissue components considering mtc component patients show somatic mutation harbored ret somatic mutation presented mutations ras gene additional case ras ret mutations simultaneously present considering ptc component patients harbored braf mutation ras mutation ras mutation remaining ptc cases show somatic mutation one case mtc harbored ret mutation ptc braf mutation none mutations found present tumors conclusion knowledge first study analyzing possible involvement ret braf ras oncogene mutations ptc mtc data clearly suggest classical activating mutations oncogenes commonly involved pathogenesis ptc mtc may responsible simultaneous occurrence
streptococcus mutans primary etiologic agent dental caries gain access bloodstream associated cardiovascular disease however roles mutans inflammation cardiovascular disease remain unclear aim study examine cytokine production induced mutans human aortic endothelial cells haecs evaluate participation toll like receptors tlrs cytoplasmic nucleotide binding oligomerization domain nod like receptors haecs cytokine production haecs determined using enzyme linked immunosorbent assays expression tlrs nod like receptors evaluated real time polymerase chain reaction flow cytometry immunocytochemistry involvement tlr nod cytokine production invaded haecs examined using rna interference invasion efficiencies mutans strains evaluated means antibiotic protection assays five six strains mutans various serotypes induced interleukin interleukin monocyte chemoattractant protein production haecs mutans strains upregulated tlr nod mrna levels haecs streptococcus mutans upregulated intracellular tlr nod protein levels haecs silencing tlr nod genes haecs invaded mutans led reduction interleukin interleukin monocyte chemoattractant protein production cytokine production induced invasive mutans via intracellular tlr nod haecs may associated inflammation cardiovascular disease
previously shown high exchange ncx activity bovine adrenal chromaffin cells study monitoring change single cells population chromaffin cells reverse mode exchanger activity initiated shown ncx activity enhanced enhanced activity accounted significant proportion dependent uptake activity chromaffin cells results support hypothesis ncx exchanger nckx present chromaffin cells expression nckx chromaffin cells confirmed using pcr northern blotting addition plasma membrane exchanger activity measured dependent uptake also present membrane isolated chromaffin granules enriched fraction mitochondria enriched fraction results support ncx nckx present bovine chromaffin cells regulation probably efficient participation nckx
food drug administration approved use papain gel united states authors feel study adds literature regarding use introduction aim study evaluate effect papain gel wounds mice materials methods thirty healthy cbl mice aged weeks randomly divided groups mice treated papain gel mice treated placebo gel skin incisions performed metallic punch cutting blade edge days creating lesion mice euthanized lesion samples collected lesion samples processed sectioned fragments skin stained types dye hematoxylin eosin picrosirius red weigert addition immunohistochemical analysis alpha actin followed real time polymerase chain reaction pcr protocol performed samples results gross examination papain treated group took less time heal wounds compared control day microscopic examination showed papain treated group lower numbers inflammatory cells increased neovascularization improved organization collagen elastic fibers using pcr analysis papain treated group showed significant increase transforming growth factor beta interleukin expression compared control conclusion due reduced local inflammatory response increased angiogenesis improved organization collagen deposition findings demonstrate papain gel improve cutaneous wound healing mice
jet machine associated facilities require significant maintenance enhancement installation activities support experimental exploitation programme proportion activities within radiological respiratory hazardous environments breathing air fed one piece pressurised suits provide workers protection inhalation airborne tritium beryllium dust design suits essentially developed empirically practical necessity improve design optimise worker performance protection thermal comfort paper details complexity modeling three dimensional thermofluid domain inner surface suit garments includes mass well heat transfer suiting geometry human metabolism respiration effects limb movements methods used include computational fluid dynamics cfd theoretical adaptations mixed phase turbulent profile scanning suit actuating life size mannequin data processing images experimental validation trials achievements current programme collaborations presented paper future endeavors discussed elsevier rights reserved
background campylobacter species widespread zoonotic pathogens campylobacter jejuni causes form gastroenteritis called campylobacteriosis campylobacter drug resistance considered serious threat order better understand national international research output campylobacter conducted bibliometric overview publications campylobacter study used assess extent interaction response researchers food regulators health policy makers global burden campylobacateriosis methods scopus database used retrieve publications following keywords campylobacter campylobacteriosis jejuni coli study period set types journal documents excluding errata considered bibliometric indicators annual growth publications country contribution international collaboration citation analysis presented quality retrieved data indirectly assessed hirsch index impact factor journals results total documents retrieved median citations index annual number publications showed fluctuating increase core leading journals applied environmental microbiology journal journal food protection publications usa productive country danmarks tekniske universitet productive institution half top ten productive countries european france lowest percentage articles international collaboration netherlands highest percentage articles international collaboration approximately half retrieved articles published journals subject area immunology microbiology main themes highly cited articles molecular biology genetics public health burden campylobacteriosis articles campylobacter related drug resistance top cited articles focused mainly increasing resistance quinolones fluoroquinolones conclusions clear increase number publications campylobacter rational use antimicrobials humans poultry animals highly recommended international collaboration highly required particularly implementing new diagnostic screening technologies minimize global health burden campylobacter ensure food safety
tomato spotted wilt virus tswv causes significant losses production ornamental plant dahlia variabilis japan purpose study examine distribution tswv dahlia plants identify plant parts used selection tswv free plants distribution tswv investigated using reverse transcriptional polymerase chain reaction pcr tissue blot immunoassay detection rate tswv latent infected compound leaves highest petiole decreased veins rachis lamina tissue blot immunoassays leaflets showed uneven distribution tswv especially along edge leaf blade stems detection rate tswv high partway stem compared upper lower parts stem vegetative growth stage highly uneven distribution observed bulb results indicated middle parts stem well petioles rachis veins compound leaves suitable detection tswv dahlias study first report uneven distribution tswv dahlia plants
role randomness environment genetics cancer development debated approach discussion using potential outcomes framework causal inference briefly considering underlying assumptions suggest antagonising views arise due estimation substantially different causal effects effects may hard interpret results immediately compared indeed clear whether possible define causal effect chance elsevier ltd rights reserved
purpose review altered differentiation activation cell subsets occur patients chronic kidney disease ckd impact graft rejection protective immunity transplantation fully understood recent findings patients ckd decreased frequency naive cells accumulation activated terminally differentiated memory cells skewed regulatory versus helper ratio naive memory cell subsets appear improve following kidney transplantation retained thymic output associated acute rejection whereas naive lymphopenia accumulation temra cells correlate long term graft dysfunction null memory cells accumulate ckd appear confer protection acute rejection standard immunosuppression possibly costimulation blockade cells bearing also increased patients ckd may underlie rejection costimulation blockade summary mechanisms ckd alters differentiation activation status cell subsets poorly understood research also needed understand cell populations mediate rejection various immunosuppressive regimens date little use animal models organ failure transplant immunology research ckd mouse models may help identify novel pathways targets better control alloimmunity posttransplant
plant chitinases strong antifungal enzymes genes utilized engineer crop plants including potatoes tolerance fungal pathogens purified recombinant chitinase protein significantly inhibited growth phytopathogenic fungi including alternaria solani qualitative invitro antifungal assay furthermore transgenic potatoes variety desiree expressing endo chitinase gene successfully developed using agrobacterium mediated transformation method transformation efficiency based preliminary molecular biochemical analyses including histochemical gus staining pcr southern blotting crude protein extracts transgenic potato plants inhibited hyphal growth solani quantitative vitro assay vitro bioassay showed transgenic potato plants exhibit strong resistance solani infection plants remains green healthy non transgenic control plants turned yellow eventually died week post infection detached leaf assay leaves transgenic plants challenged soltani showed decrease susceptibility compared control number necrotic spots control leaves significantly higher compared number transgenic leaves potato plants infected solani furthermore solani infection triggered gradual increase mrna expression transgene transgenic plants compared non transgenic plants revealed qrt pcr assay mrna expression increased fold higher post infection compared control mrna expression directly correlated abundance specific transgene transcripts
northern fowl mite ornithonyssus sylviarum damaging ectoparasite egg laying hens united states one potential strategy management breeding mite resistance genes white leghorn chickens linked major histocompatibility complex mhc previously identified conferring haplotype less haplotype mite resistance however immune responses energetically costly host affect economic damage incurred mite infestations tested energy costs resting metabolic rate mite infestations egg laying birds mhc haplotypes resting metabolic rates documented pre mite infestation mid infestation peak late mite infestation mite scores economic parameters egg production feed consumption physiological aspects skin inflammation skin temperature recorded weekly across experiments different infestation time points resting metabolic rates generally affected mite infestation haplotype although instances lower metabolic rates infested versus control hens skin temperatures recorded site mite feeding damage vent wing mites possibly would reflect systemic fever response ambient temperatures modified skin surface temperature generally affected mites haplotype feed conversion efficiency significantly worse depending trial birds infested mites overall egg production average egg weight affected significantly although trend toward reduced egg production infested hens mhc haplotype significantly affected vent skin inflammation birds mite resistant haplotype showed earlier onset inflammation reduced overall area inflammation compared mite susceptible birds significant differences resting energy expenditure related mite infestation immune responses detected potential breeding resistance mite infestation using two haplotypes appears neutral terms impact hen energy costs production efficiency may attractive option future mite control
phenyl pyrrolidin octan one metabolites including diastereomers conjugates identified tentatively detected human urine gas chromatography mass spectrometry liquid chromatography high resolution tandem mass spectrometry urinary metabolites indicated metabolic pathways include reduction ketone groups corresponding alcohols oxidation pyrrolidine ring corresponding pyrrolidone aliphatic oxidation terminal carbon atom corresponding carboxylate form possibly alcohol intermediate detected hydroxylation penultimate carbon atom corresponding alcohols followed oxidation ketones combinations steps addition results quantitative analyses five phase metabolites using newly synthesized authentic standards suggested main metabolic pathway includes aliphatic oxidation terminal penultimate carbons human metabolism differed significantly alpha pyrrolidinovalerophenone alpha pyrrolidinobutiophenone suggesting main metabolic pathways alpha pyrrolidinophenones significantly change depending alkyl chain length parent molecule
platinum drugs remain backbone many antineoplastic regimens among numerous chemical pharmacological effects platinum drugs aspects tend reported thus perspective paper intends stress neglected properties platinum drugs first physico chemical characteristics aquation reaction kinetics determine site specific toxicity second impact rna molecules knowledge rna world dramatically changed understanding cellular molecular biology inherent rna crosslinking properties make platinum based drugs interact coding non coding rnas third discuss impact immune system recognized substantially contribute chemotherapy efficacy together platinum drugs fact old drugs worth focusing many aspects still mysterious pave way new drugs improved application already existing compounds
background oncofetal protein high mobility group hook protein hmga reactivated serous ovarian cancer soc overexpression correlates poor prognosis explore mechanism investigated whether hmga could avoid microrna regulation due gene truncation utr shortening alternative polyadenylation methods real time reverse transcription polymerase chain reaction pcr used evaluate abundance different regions hmga mrna soc samples rapid amplification cdna ends race southern blotting used confirm shortening untranslated region utr race southern blotting used prove mrna decay results significant difference ratio stable coding region fragile region observed soc control normal fallopian tubes indicating hmga gene truncated soc varying degrees utr shortening soc samples observed comparing abundance proximal region distal region hmga utr ratio proximal distal region utr correlated significantly expression hmga coding region soc moreover although abundance hmga coding region varied samples including low expressed samples exhibit relatively high levels proximal utr region suggesting dynamic decay hmga mrna end shortening utr decay end confirmed race race subsequent southern blotting conclusion heterogeneous utr lengths render hmga susceptible different levels negative regulation micrornas represents important mechanism hmga reactivation soc
background profilin small actin binding protein contributes allergenic potency many fruits vegetables including tomato two highly similar genes encoding tomato profilin isolated designated allergen lyc lye objective aim study generate profilin reduced hypoallergenic tomato fruits silencing genes transgenic tomato plants means rna interference rnai methods efficiency gene silencing documented means northern blotting immunoblotting skin prick testing results quantification remaining protein revealed profilin accumulation transgenic fruits decreased fold compared seen untransformed controls decrease sufficient cause reduced allergenic reactivity patients tomato allergy determined skin prick tests patients tomato allergy monosensitized profilin ige reactivity profilin silenced tomato fruits vivo varied widely individuals tested conclusion could demonstrate efficient silencing profilin genes transgenic tomato plants using rnai resulted lyc diminished tomato fruits providing proof concept demonstrating rnai used design allergen reduced food however simultaneous silencing multiple allergens required design hypoallergenic tomatoes clinical implications findings demonstrate feasibility creating low allergenic food using rnal concept constitutes novel approach allergen avoidance
chymosin also known rennin plays essential role coagulation milk cheese industry chymosin traditionally extracted rumen calves high cost present alternative method producing bovine chymosin transgenic tobacco plants cym gene encodes preprochymosin bovine introduced tobacco nuclear genome control viral cauliflower mosaic promoter integration transcription foreign gene confirmed southern blotting reverse transcription pcr pcr analyses respectively immunoblotting analyses performed demonstrate expression chymosin expression level quantified enzyme linked immunosorbent assay elisa results indicated recombinant bovine chymosin successfully expressed average level fresh weight total soluble protein tobacco derived chymosin exhibited similar native milk coagulation bioactivity commercial product extracted bovine rumen
ticks pathogens transmit constitute growing burden human animal health worldwide vector competence component vectorial capacity depends genetic determinants affecting ability vector transmit pathogen determinants affect traits tick host pathogen susceptibility pathogen infection therefore elucidation mechanisms involved tick pathogen interactions affect vector competence essential identification molecular drivers tick borne diseases review provide comprehensive overview tick pathogen molecular interactions bacteria viruses protozoa affecting human animal health additionally impact tick microbiome interactions considered results show different pathogens evolved similar strategies manipulation immune response infect vectors facilitate multiplication transmission furthermore strategies may used pathogens infect tick mammalian hosts identification interactions promote tick survival spread pathogen transmission provides opportunity disrupt interactions lead reduction tick burden prevalence tick borne diseases targeting similar mechanisms used pathogens infection transmission ticks may assist development preventative strategies multiple tick borne diseases
chimerism associated placental sharing marmosets traditionally analysed using conventional chromosome staining metaphase spreads polymerase chain reaction however former technique requires presence proliferating cells whereas latter may associated possible blood cell contamination therefore aimed develop single cell analysis technique sexing marmoset cells applied fluorescent situ hybridisation fish cell nuclei using differentially labelled chromosome specific probes herein present validation method metaphase cells marmoset lymphoblastoid cell line well application method evaluation cross sex chimerism interphase blood lymphocytes haematopoietic bone marrow cells marmosets mixed sex litters results show conclusively haematopoietic cells bone marrow leucocytes blood cross sex chimeric litter mixed sex addition single samples liver spleen cell suspensions one individual tested cross sex chimerism observed spleen liver cells conclude fish method choice identify cross sex chimerism especially combined morphological identification nuclei different cell types allow targeted tissue specific analysis
environmental challenges soil salinity drought serious threats global food security biodiversity making selection development stress tolerant genotypes crops native plants necessary certain biochemical compounds synthesized plants directly involved ameliorating effects environmental stress characteristic ways biochemical composition edible parts crops directly related human health deficiencies certain nutrients associated major health conditions healthcare costs public awareness functional foods also increasing interestingly unique biochemical properties biomolecules involved plant stress tolerance also associated significant roles human metabolism health work summarises biochemical properties functions four selected biomolecules dual significance abscisic acid key hormone roles plant development abiotic stress response glycine betaine quaternary ammonium compound functions osmoprotectant vitamin components antioxidants phenolic compounds antioxidants four also significant nutraceutical effects
strongest best documented risk factor drug hypersensitivity history previous reaction accidental exposures drugs may lead severe even fatal reactions sensitized patients preventable prescription errors common often due inadequate medical history poor risk assessment recurrence drug reaction proper documentation essential information doctor make sound therapeutic decision european network drug allergy drug allergy interest group european academy allergy clinical immunology formed task force developed drug allergy passport well general guidelines drug allergy documentation drug allergy passport drug allergy alert card certificate discharge letter medical evaluation adequate means document patient handed patient advised carry documentation times especially away home drug allergy passport least contain information culprit drug including international nonproprietary name clinical manifestations including severity diagnostic measures potential cross reactivity alternative drugs prescribe detailed information obtained issuer given patients full allergy workup future electronic prescription systems alert functions become common include information paper based documentation
gastric cancer represents major cause cancer mortality worldwide despite declining incidence new molecular classification schemes developed genomic molecular analyses gastric cancer provided framework understanding heterogenous disease early findings suggest classifications relevant designing implementing new targeted therapies success targeted therapy immunotherapy breast cancer melanoma respectively duplicated gastric cancer trastuzumab ramucirumab demonstrated efficacy select populations new markers predict therapeutic response needed improve patient selection targeted immunotherapies
deeper understanding plant endophyte interactions abiotic stress would provide new insights phytoprotection phytoremediation enhancement many studies investigated positive role plant endophyte interactions providing protection plant pollutant stress auxin indole acetic acid iaa production however little known impact endophytic colonization patterns plant stress response relation reactive oxygen species ros iaa levels moreover possible effect pollutant phase plant stress response poorly understood elucidated impact endophytic colonization patterns plant stress response airborne formaldehyde compared formaldehyde contaminated soil ros tryptophan iaa levels roots shoots endophyte inoculated non inoculated plants presence absence formaldehyde measured strain specific quantitative polymerase chain reaction qpcr used investigate dynamics endophyte colonization initial exposure airborne formaldehyde non inoculated plants accumulated tryptophan shoots compared roots synthesize iaa however endophyte inoculated plants behaved differently synthesized accumulated tryptophan roots hence higher levels accumulation exudation within roots might act signaling molecule selectively recruit cereus erbp continuous airborne formaldehyde stress higher levels ros accumulation shoots pushed plant synthesize tryptophan iaa shoots compared roots higher levels iaa shoots might act potent driving force relocalize cereus erbp roots shoots contrast formaldehyde contaminated soil cereus erbp colonized root tissues without moving shoots since sharp increase ros tryptophan iaa levels roots without significant increase shoots pollutant phase affected endophytic colonization patterns plant stress responses differently elsevier masson sas rights reserved
aim regenerative engineering restore complex tissues biological systems convergence fields advanced biomaterials stem cell science developmental biology hydrogels one attractive biomaterials regenerative engineering since engineered tissue mimetic scaffolds support cell growth due similarity native extracellular matrix advanced nano micro technologies dramatically increased ability control properties functionalities hydrogel materials facilitating biomimetic fabrication sophisticated compositions architectures thus extending understanding cell matrix interactions nanoscale perspective review discusses commonly used hydrogel materials fabrication strategies regenerative engineering highlight physical chemical functional modulation hydrogels design engineer biomimetic tissues based recent achievements nano micro technologies addition current hydrogel based regenerative engineering strategies treating multiple tissues musculoskeletal nervous cardiac tissue also covered review interaction multiple disciplines including materials science cell biology chemistry play important role design functional hydrogels regeneration complex tissues
humanized bone marrow liver thymus blt mouse model harbors nearly complete human immune system therefore providing powerful tool study human immunology immunotherapy however application greatly limited restricted supply human hematopoietic stem cells fetal thymus tissues needed generate mice restriction especially significant study human immune systems special genetic traits certain human leukocyte antigen hla haplotypes monogene deficiencies circumvent critical limitation developed method quickly propagate established blt mice secondary transfer bone marrow cells human thymus implants blt mice nsg nod scid gamma recipient mice able expand one primary blt mouse colony problt propagated blt mice weeks problt mice reconstituted human immune cells including cells levels comparable primary blt donor mouse also faithfully inherited human immune cell genetic traits donor blt mouse hla haplotype special interest studying hla restricted human cell immunotherapies moreover egfp reporter gene engineered human immune system stably passed blt problt mice making problt mice suitable studying human immune cell gene therapy method provides opportunity overcome critical hurdle utilizing blt humanized mouse model enables widespread use valuable preclinical research tool
objective provide selectable microrna intervening diabetes mellitus diseases nod mice expression microrna pancreas tissues blood exendin intervention observed difference microrna target gene screened materials methods forty clean nod mice randomly divided four groups group one blank control group intervened normal saline three groups divided low dose group middle dose group high dose group according different exendin dosage week intervention four groups killed pancreatic tissue blood left prepare specimens morphology molecular biology analysis specimen differential expression microrna pancreas tissue blood screened detected locked nucleic acid array system lnatm microrna expression profile chip primers designed abi real time fluorescent quantitative pcr applied amplify analyze verify according screen results microrna chip order screen significant differentially expressed microrna results histological detection showed pancreas mice control group fibrosis gradually islet frame relatively disordered significantly atrophied groups islet hypertrophy atrophy degree fibrosis pancreas reduced according gene chip detection four significantly differently expressed micrornas pancreas tissue blood among group among mir mir mir regulated expressed mirna upregulated expressed bioinformatics analysis showed target genes differentially regulated microrna genes related cell proliferation apoptosis glucose metabolism angiogenesis expression microrna pancreatic tissue blood nod rats highly consistent conclusions microrna expression file pancreatic tissue blood changed intervention nod rat model exendin microrna indicates differential expression may take part recovering process nod pancreatic trauma time administration exendin protect nod mice reduce pancreatic tissue fibrosis regulate molecular markers pancreatic cells size pancreatic mast cells may one main mechanisms pancreatic injury diabetes prevention
antoregulation genes often associated quorum sensing systems bacteria produce secrete molecules allow cells communicate one another leading activation certain genes certain population densities describe identification agr quorum sensing system staphylococcus aureus isolation agr autoinducers inhibitors northern blotting real time pcr beta lactamase reporter cells assays
investigated developmental expression pattern amphicam cephalochordate amphioxus branchiostoma belcheri tsingtauense cultured sampled animals different developmental stages eggs larvae used situ hybridization northern blotting document spatial temporal changes amphicam expression alimentary tract dominates development late neurula stage adult stage amphicam expression increased significantly alimentary tract late neurula stage remained elevated adults results indicate amphicam involved differentiation alimentary tract amphioxus furthermore provide insight change function cam genes evolution
sines short interspersed repetitive elements propagate eukaryotic genomes via transcription followed reverse transcription recent genomic surveys demonstrated sines active shaping architecture genomes therefore powerful markers studies phylogeny population biology present study new protocol developed apply nonradioactive digoxigenin labeling system isolation sines rapidly safely efficiently application approach illustrated discovery thirteen informative sines novel member sine family omura whale balaenoptera omurai sperm whale physeter macrocephalus first record sine cetacean analysis subfamily specific genetic variability insertions deletions strongly suggested existence novel chr sine subfamilies cetacean genomes
gamma interferon inducible lysosomal thiol reductase gilt key enzyme antigen processing presentation pathway whereby reduces disulfide bonds acidic study homolog gilt guinea pigs designated gpgilt identified characterized using bioinformatic methods bioactivity assays open reading frame gpgilt length encodes amino acids putative molecular weight kda structure gpgilt similar humans zebrafish containing six introns seven exons deduced primary structure gpgilt protein includes typical features known gilt proteins including active site motif cxxc gilt signature sequence cqhgx ecx three potential asn linked glycosylation sites six conserved cysteines predicted tertiary structures gpgilt human gilt mouse gilt quite similar shape positional arrangement key motifs modeled template amino acid sequence based alignment phylogenetic analysis showed gpgilt closely related rat identity additionally constitutive expression immune response lipopolysaccharide lps challenge gpgilt tested using real time quantitative polymerase chain reaction tissue specific expression pattern selected tissues remarkable regulation gpgilt mrna spleen blood within lps stimulation observed suggesting gilt functions immunological surveillance related factor innate adaptive immunity soluble recombinant gpgilt produced coli could reduce interchain disulfide bonds igg acidic reaction system vitro suggesting thiol reductase activity antigen processing results study provide better understanding molecular characteristics gpgilt useful reference investigation involvement antigen processing immunological surveillance using laboratory guinea pig elsevier ltd rights reserved
cell based extracorporeal liver support option assist replace failing organ regeneration transplantation performed use porcine cells tumor cell lines controversial primary human liver cells obtained explanted organs found unsuitable transplantation desirable cell source perform human metabolism regulation modular extracorporeal liver support mels concept combines different extracorporeal therapy units tailored suit individual intra individual clinical needs patient multi compartment bioreactor cellmodule loaded human liver cells obtained step collagenase liver perfusion cell mass enables clinical application liver lobe equivalent hybrid organ detoxification module enables single pass albumin dialysis via standard high flux dialysis filter continuous venovenuous hemodiafiltration may included required cells human livers isolated donor age years liver weight resulting viability grafts suitable ltx due steatosis cirrhosis fibrosis reasons prepared bioreactors clinically used treat patients liver failure overall treatment time hours adverse events observed initial clinical applications bioreactor evidenced technical feasibility safety system
goal tissue engineering mitigate critical shortage donor organs via vitro fabrication functional biological structures tissue engineering one prominent examples interdisciplinary fields scientists different backgrounds work together boost quality life addressing critical health issues many different fields developmental molecular biology well technologies micro nanotechnologies additive manufacturing integral advancing field tissue engineering past years spectacular advancements achieved harness nature ability cure diseased tissues organs patients received laboratory grown tissues organs made cells thus eliminating risk rejection however challenges remain addressing complex solid organs heart liver kidney herein review recent accomplishments well challenges must addressed field tissue engineering provide perspective regarding strategies development
introduction endarterectomized human atherosclerotic plaques valuable basis gene expression studies disclose novel imaging biomarkers therapeutic targets cannabinoid receptor type work expressed activated immune cells abundant inflamed plaques evaluated specific radiotracer imaging vascular inflammation human mouse atherosclerotic lesions methods differential gene expression microscopically classified human carotid plaques evaluated using quantitative polymerase chain reaction addition expression levels human plaques investigated vitro autoradiography appropriate animal model used apolipoprotein knockout mice apoe shear stress induced atherosclerosis evaluate levels vivo positron emission tomography pet performed radioligand metabolic radiotracer fluorodeoxyglucose fdg various time points retrospectively carotids dissected histopathology gene expression analysis results identified human genes differentially expressed atherosclerotic plaques compared normal arteries upregulated preferentially vulnerable plaques latter group included members matrix metalloproteinase family lymphocyte activation antigens upregulated fold human atherosclerotic plaques correlating expression levels specific vitro binding predominantly observed plaques vivo pet imaging apoe mice revealed accumulation fdg atherosclerotic plaques development advanced plaques elevated levels found vitro apoe mice resembling human vulnerable plaques conclusion identified human genes associated plaque vulnerability potentially could serve novel imaging therapeutic targets specific radiotracer detected human plaques vitro autoradiography accumulated vivo plaques apoe mice however exclusively vulnerable plaques elsevier inc rights reserved
order find new insect resistance genes four homologous cdnas hta hta hta hta lengths respectively genbank accession numbers isolated tuber cdna expression library helianthus tuberosus sequence analysis revealed four cdnas contain open reading frame coding polypeptide amino acid residues sequences cdnas similar mannose binding agglutinin genes jacalin related family hemagglutination reactions hapten inhibition assays affinity purified hta helianthus tuberosus agglutinin induced escherichia coli expressing gst hta shows hemagglutination ability higher carbohydrate binding ability mannose tested sugars trypsin inhibitory activity detected crude extracts induced coli expressing hta verified trypsin inhibitory activity staining native polyacrylamide gel mechanism interaction hta trypsin studied molecular modeling found plenty hydrogen bonds electrostatic interactions formed supposed binding sites hta active site trypsin stable hta trypsin complex formed results imply hta might bifunctional protein carbohydrate binding activity trypsin inhibitory activity moreover northern blotting analysis demonstrated hta predominantly expressed tubers tuberosus weakly expressed stems expressed tissues southern blotting analysis indicated hta encoded multi gene family insect resistance traits described another paper
lung cancer leading cause cancer related deaths worldwide lung cancer risk factors including smoking exposure environmental carcinogens linked chronic inflammation integral feature inflammation activation expansion infiltration diverse immune cell types including cells within cell subset immunosuppressive regulatory treg cells pro inflammatory helper cells act fine balance regulate appropriate adaptive immune responses context lung cancer evidence suggests tregs promote metastasis metastatic tumor foci development additionally cells shown integral component inflammatory milieu tumor microenvironment potentially involved promoting distinct lung tumor phenotypes studies shown composition tregs cells altered tumor microenvironment two cell subsets play active roles promoting lung cancer progression metastasis review current knowledge influence treg cells lung cancer tumorigenesis progression metastasis prognosis furthermore discuss potential biological clinical implications balance among treg cells context lung tumor microenvironment highlight potential prognostic function relationship metastasis lung cancer
rice false smut caused ustilaginoidea virens destructive disease many rice growing areas mycoviruses described many fungal species little information regarding mycoviruses virens study double stranded rna banding patterns assessed wild type isolates virens obtained different geographical regions china presence viral infections unusually common virens isolates contained dsrna elements viral characteristics presence mixed infections two related unrelated mycoviruses commonly detected isolate contained four dsrna mycoviruses ustilaginoidea virens rna virus uvrv belonging totiviridae ustilaginoidea virens rna virus uvrv belonging unclassified family includes curvularia thermal tolerance virus last two probably belonging partitiviridae biological comparisons virus free infected fungal isolates revealed uvrv strain uvrv likely cryptic since infected strains show apparent symptoms debilitation northern blotting experiments revealed uvrv strain uvrv frequently found virens irrespective place origin similarly sized dsrna bands always similar sequence thus findings suggest mycoviruses infecting virens china widespread highly diverse elsevier rights reserved
study detailed investigation spatiotemporal characteristics anthropogenic heat different sectors human metabolism transportation building energy consumption urban environment tsinghua campus beijing china conducted using inventory building energy modeling methods estimated large local time summer local time winter results indicate tsinghua campus displays clear diurnal seasonal cycles among three sectors building energy consumption contributes total whereas metabolism transportation accounts respectively spatial distribution indicates higher generally observed densely built areas hourly maximum value comparison incoming solar radiation shows magnitude incoming solar radiation summer winter respectively therefore considered important component urban representation numeric weather prediction models carefully accounted considering urban surface energy balance study provides evidence significance urban environment suggestions improvement urban module numeric weather prediction models elsevier ltd rights reserved
background antimicrobial resistance global public health challenge carbapenem resistance particular considered urgent global health threat study carried give bibliometric overview literature carbapenem resistance specific number publications top productive countries institutes highly cited articles citation analysis authorships international collaboration top active authors journals publishing articles carbapenem resistance analyzed discussed methods specific keywords pertaining carbapenem resistance used scopus database quantitative qualitative analysis retrieved data presented using appropriate bibliometric indicators visualization maps results total journal articles retrieved average number citations per article growth publications showed dramatic increase approximately retrieved articles carbapenem resistance published antimicrobial agents chemotherapy journal retrieved articles published different countries united states america usa contributed articles followed china articles productivity stratified population size greece ranked first followed france greece also ranked first data stratified gross domestic product gdp asian countries lesser international collaboration compared countries top ten list five top ten productive institutes europeans france greece italy switzerland two asians china south korea active institutes included israeli brazilian institute four top ten cited articles published antimicrobial agents chemotherapy journal two published lancet infectious diseases conclusion dramatic increase number publications carbapenem resistance past years publications produced different world regions including asia europe middle east latin america international collaboration needs encouraged particularly researchers asia molecular biology epidemiology dominated theme top ten cited articles carbapenem resistance bibliometric study hopefully help health policy makers planning future research allocating funds pertaining carbapenem resistance
allele frequencies forensically relevant population statistics parameter short tandem repeat str loci determined unrelated uygur ethnic individuals samples amplified microreader system significant deviation hardy weinberg equilibrium detected except loci investigated loci discriminating uygur ethnic population combined discrimination power furthermore comparison previously published frequency data han population presented
study examined role microrna mir bladder cancer related mechanisms real time polymerase chain reaction pcr performed determine expression level mir western blot used determine expression nras mainly factors pik akt jak stat pathways cell counting kit assay clonogenic assay wound healing assay transwell flow cytometry used explore respectively cell proliferation survival migration invasion apoptosis bladder cancer cell line expressions mir bladder cancer cells including significantly increased compared human bladder epithelium cells hcv huc proliferation rate surviving fraction migration invasion cells mir mimetic transfected group significantly increased significantly decreased mir inhibitor transfection moreover mir suppression could increase apoptotic rate cells addition drug resistance cells cisplatin increased mir mimetic treated group decreased mir inhibitor compared empty control overexpression mir could upregulate nras expression cells activate pik akt jak stat pathways found mir expression positively related proliferation motility cells moreover mir suppression could promote sensitivity cells cisplatin also found mir could upregulate nras activate pik akt jak stat pathways cells
background cells human adaptive immune system leverage highly diverse repertoire antigen specific receptors protect human body pathogens sequencing analysis immune repertoires emerging important tool understand immune responses whether beneficial harmful case autoimmunity however methods studying repertoires directly comparing different immune repertoires lacking results paper present non parametric method directly comparing sequencing repertoires goal rigorously quantifying differences gene segment utilization method referred repertoire dissimilarity index rdi uses bootstrapped subsampling approach account variance sequencing depth coupled data simulation approach allows direct quantification average variation repertoires use rdi method recapitulate known differences formation cell repertoires show antigen driven activation naive cells selective repertoire resulting specialized memory repertoire conclusions prove rdi method accurate versatile method comparisons immune repertoires rdi method implemented package available download bitbucket
plant residues one main sources soil organic matter paddy fields elucidation bacterial communities decomposing plant residues important understand function roles microbial decomposition plant residues linked soil fertility conducted dna stable isotope probing sip experiment elucidate bacterial community assimilating carbon derived plant residue anoxic soil condition addition compared bacterial community oxic soil condition elucidated previous study lee soil biol biochem used labeled dried rice callus cells model rice plant residue paddy field soil incubated unlabeled labeled callus cells dna extracted soils subjected buoyant density gradient centrifugation fractionate enriched dna polymerase chain reaction pcr denaturing gradient gel electrophoresis dgge analysis bacterial rdna band patterns band sequencing method used evaluate bacterial community dgge analysis showed band patterns enriched fractions distinctly changed time changes community structure fractionation minor sequencing labeled dgge bands revealed clostridia major group bacterial communities incorporating callus derived carbon although gram negative bacteria actinobacteria also participated carbon flow callus anoxic condition proportion gram negative bacteria actinobacteria increased days onset incubation suggesting callus decomposed diverse bacterial members phase bacterial groups incorporating compared anoxic oxic soil conditions composition largely different two opposite conditions however members gram negative bacteria commonly found anoxic oxic soil conditions majority bacterial members assimilating callus carbon clostridia soil anoxic conditions however several gram negative bacterial members acidobacteria bacteroidetes proteobacteria also participated decomposition callus anoxic soil conditions study showed carbon flow diverse bacterial members callus decomposition distinctiveness bacterial communities formed anoxic oxic soil conditions
objectives perform state art immunological features renal transplantation immunosuppressive drugs mechanisms action immunologically high risk transplantations abo hla incompatible transplantation material methods exhaustive systematic review scientific literature performed medline database embase using different associations following keywords mesh allogenic response allograft immunosuppression abo incompatible transplantation donor specific antibodies hla incompatible desensitization kidney transplantation publications obtained selected based methodology language date publication last years relevance prospective retrospective studies english french review articles meta analysis guidelines selected analyzed search found articles reading titles abstracts included text based relevance results considerable step comprehension knowledge allogeneic response last years allowed better used immunosuppression discover news immunosuppressive drugs first part article allogeneic response described different classes immunosuppressive drugs presented actual management immunosuppression discussed eventually modalities results immunologically high risk transplantations abo hla incompatible transplantations reported conclusions knowledge control allogeneic response allogeneic graft allowed development renal transplantation elsevier masson sas rights reserved
potential recovery high value products brewery yeast waste confers value industrial residue aqueous two phase systems atps demonstrated attractive alternative primary recovery biological products therefore suitable recovery invertase residue sixteen different polyethylene glycol peg potassium phosphate atps tested evaluate effects peg molecular weight tie line length tll upon partition behavior invertase concentrations crude extract brewery yeast waste varied systems presented best behaviors intensify potential recovery enzyme results show use peg mol system tll resulted invertase bottom phase recovery purification factor recovery yield scaling system total weight represents invertase per processed bottom phase results single stage atps process recovery invertase proposed international union biochemistry molecular biology inc volume number pages
carbon nanotubes graphenes hybridized composites nanoparticles attempted establish direct electrical communication recognition biomolecule underlying electrode surface review refs focuses advances strategies technical challenges development reagentless electrochemical biosensors glucose enhanced detection sensitivity selectivity simplicity specifically review commences discussion relevance direct electron transfer det biosensing together fundamental electro enzymology kinetics general aspects glucose oxidase gox popular enzyme flavin cofactor discussed view historical important role development electrical biosensors blood glucose next section assesses det gox based marcus theory laviron formalism reorganizational energy marcus model overpotential play important role reaction kinetics affect rate electron transfer significantly presence nanomaterials particularly graphene oxide decreases electron transfer distance enzyme redox center underlying electrode surface well beyond improper marcus hush chidsey integral simplified estimate rate electron transfer good accuracy critiques technical challenges future possibilities glucose electrodes respect det also presented discussed
dermatophytes fungi cause infections skin hair nails due ability utilize keratin genetic transformation systems dermatophytes successfully applied trichophyton mentagrophytes microsporum canis describe procedure genetic transformation trichophyton rubrum electroporation germinated conidia linearized transformation vector pchsh pch gfp ttrpc containing bacterial hygromycin phosphotransferase gene hph green fluorescent protein gene egfp introduced germinated conidia rubrum electroporation pcr reaction analysis showed egfp gene integrated randomly southern blotting analysis demonstrated single integration hph gene chromosomal dna randomly selected transformant work report efficient transformation selection stable rubrum transformants
background aim depth understanding early phase type diabetes tid pathogenesis important targeting primary prevention examined preselected mediators immune responses differed neonates later developed tid compared control neonates methods study case control study matching individuals born cases validated using national patient register danish childhood diabetes register interleukin beta interferon gamma tumor necrosis factor alpha transforming growth factor beta active form leptin adiponectin reactive protein mannose binding lectin soluble triggering receptor expressed myeloid cells measured using flowmetric luminex xmap technology tested two models including number possible confounders first model model also adjusted hla beta genotype total groups assay matched cases controls individuals included statistical analyses results adiponectin negatively associated later risk tid models relative change model model positively associated risk model respectively results borderline significant model showed direction results model conclusions results indicate specific immunological signatures already present time birth children developing age years elsevier inc rights reserved
fate pharmaceuticals environment important issue environmental health research although substances detected environmental compartments low concentration pose considerable environmental risk ecosystems animals human due biological activity alternative plant based removal technologies make use potential wetland species like phragmites typha within traditional wastewater treatment plants established cope new generation pollutants investigated uptake translocation diclofenac macrophyte typha latifolia one week exposure greenhouse experiments detoxification products involved key enzymatic processes identified also examined oxidative stress induced treatment defense capacity plants rapid uptake effective metabolism observed glycoside glutathione conjugates represent dominant metabolites seven fold induction glycosyltransferase activity observed roots shoots glutathione transferase activity also induced lower extent activity changes defense enzymes points oxidative stress plants results show human pharmaceuticals metabolized plants similar xenobiotics similarities human metabolism limited elsevier ireland ltd rights reserved
capillary electrophoresis may replace man conventional clinical laboratory methods electrophoresis southern blotting sequencing hplc high performance liquid chromatography ideal technique due analytical speed possibility handling great amount samples capacity separate small molecules according size charge hydrophobicity stereo specificity good reproducibility use small amounts sample reagents low costs easy handling diagnosis hereditary diseases predisposition polygenic diseases related specific initiations polymorphisms carried method clinical laboratories technique used analysis several substrates present urine serum diagnosis infectious agents also firsthand tool forensic medicine human identification anthropology rev med chile
purpose review promises human induced pluripotent stem cells hipscs modeling arrhythmogenic disease also drug discovery toxicity tests straightforward exciting however full potential new technology fully realized yet purpose review provide overview state art research arrhythmogenic disease modeling drug discovery outlook expected second decade hipsc based arrhythmia research recent findings remarkable advances genomic discoveries stem cell biology genome editing via sequence specific nucleases made recent years together breakthroughs allowed progress studying monogenetic diseases direct genotype phenotype relationship genetically complex diseases arrhythmogenic right ventricular dysplasia atrial fibrillation addition newly developed tools arrhythmia research optical action potential recordings facilitated use hipscs drug toxicity screening eventual clinical use summary advances vitro assay development genome editing stem cell biology soon enable plementation hipsc based findings clinical practice provide unprecedented insights mechanisms complex arrhythmogenic diseases
developed efficient method preparation maintenance primary cell cultures isolated adult mnemiopsis leidyi lobate ctenophore primary cell cultures derived tissue explants enzymatically dissociated cells maintained complex undefined ctenophore mesogleal serum methods used isolate maintain visually monitor ctenophore cells assess proliferation cellular morphology cell differentiation future studies exemplar cell types easily isolated primary cultures include proliferative ectodermal endodermal cells motile amebocyte like cells giant smooth muscle cells exhibit inducible contractile properties also derived tissue envelopes containing sections endodermal canal surrounded mesoglea ectoderm used monitor targeted cell types vivo context access efficient reliably generated primary cell cultures facilitate analysis ctenophore development physiology morphology cell biological perspective
lymphocyte differentiation set produce myriad immune effector cells ability respond multitudinous foreign substances uniqueness developmental system lies great diversity cellular functions generate also ability differentiation intermediates mature effector cells expand upon demand thereby providing lifelong immunity surprisingly goals developmental system met relatively small group dna binding transcription factors work concert control timing magnitude gene expression fulfill demands cellular specialization expansion maintenance cellular molecular mechanisms lineage promoting transcription factors operate focus basic research immunology mechanisms development discerned effort guiding clinical research disorders immune cell base focus ikaros one earliest regulators lymphoid lineage identity guardian lymphocyte homeostasis
characterize novel ctx chimera ctx escherichia coli clinical isolates china isolates collected five hospitals february december resistance genes investigated pcr bla ctx cloned purified kinetic measurements conjugation experiments pfge southern blotting performed study plasmid harbouring bla ctx genetic environment bla ctx determined genomic cloning sequencing total cephalosporin resistant coli identified bla ctx group genes prevalent extended spectrum beta lactamase esbl genes isolates harbouring bla ctx group genes isolates harbouring bla ctx group genes novel chimera ctx like ctx like esbls designated ctx identified year old man urinary tract infection terminus ctx matched ctx terminus matched ctx ctx conferred resistance ceftazidime cefotaxime aztreonam purified ctx showed good hydrolytic activity ceftazidime cefotaxime inhibited clavulanic acid bla ctx carried similar inci plasmid bla ctx carried complete transposition unit isecp bla ctx delta orf inserted yaga part inci plasmid backbone identified novel ctx chimera ctx ctx like terminus ctx like terminus findings suggest ongoing diversification ctx type esbls recombination events
echinococcus granulosus major cause cystic echinococcosis humans livestock world chile zoonosis great importance frequently affected geographic areas regions aysen los rios los lagos coquimbo araucania hence discovered endemic areas hydatidosis could several strains genotypes addition evidence strains genotypes infectious human beings others interesting phenomenon biology studied using molecular biology techniques based polymerase chain reaction pcr dna sequence analysis made possible characterize cestode species complex called sensu lato comprised sensu stricto genotypes equinus ortleppi canadensis present important phenotypic variation detectable characteristics biological cycle specificity intermediate host pattern development pathogenicity antigenicity transmission dynamics consequently measures needed control disease aim manuscript describe different genotypes described humans different livestock host reported literature
paracoccidioidomycosis endemic disease latin america caused thermo dimorphic fungi genus paracoccidioides although previous proteome analyses paracoccidioides spp carried nuclear subproteome pathogen described way aimed characterize nuclear proteome paracoccidioides species yeast form yeast cells disrupted submitted cell fractionation purity nuclear fraction confirmed fluorescence electron microscopy liquid chromatography coupled tandem mass spectrometry allowed identification proteins order support enrichment method nuclear proteins bioinformatics analysis applied allowed identification proteins nuclear localization analysis revealed proteins related dna maintenance gene expression synthesis processing messenger ribosomal rnas likewise proteins nuclear cytoplasmic traffic also possible detect proteins poorly expressed like transcription factors involved important roles resistance abiotic stress sporulation cellular growth dna chromatin maintenance first descriptive nuclear proteome paracoccidioides spp useful important platform base fungi specific nuclear processes british mycological society published elsevier ltd rights reserved
theme free availability genetic information nature heart attention areas investigation biology medicine philosophy law theology biotechnology area science said interested subject recent years tried deepen
hypertension htn one common emerging disease developing countries alters endothelial cell structure function resulting several diseases cardiovascular disease peripheral vasculopathy cerebrovascular disease nephropathy although much progress made researching htn recent years early diagnosis treatment htn yet satisfactory progression control treatment still poor micrornas well known regulators physiological developmental processes htn results revealed mir upregulated blood samples htn patients whereas significant differences observed control samples methylation analyses corroborated mir upregulation patient samples results suggested mir used novel biomarker diagnosis new therapeutic target htn
misconception regarding human metabolism shown widespread among high school students students consider glucose sole metabolic fuel disregarding lipids amino acids oxidized atp production human cells misconception seems consequence formal teaching grade high schools present study reports evaluation teaching strategy based use dialogic teaching methodology within conceptual change approach remediate misconception students stimulated formulate hypotheses outline experiments discuss outcomes results showed students able reformulate original concepts immediately teaching majority students showed adequate learning topic eight months application teaching strategy although level misconception recurrence observed educational consequences teaching unit discussed context possible reasons success well need similar initiatives grade school avoid establishment misconception international union biochemistry molecular biology
vitro metabolism tanzisertib tetrahydrofuran trifluorophenylamino purin ylamino cyclohexanol potent selective jun amino terminal kinase jnk inhibitor investigated mouse rat rabbit dog monkey human hepatocytes extent metabolism tanzisertib variable metabolized dog human metabolized rat mouse primary metabolic pathways human dog hepatocytes direct glucuronidation oxidation cyclohexanol keto metabolite subsequently reduced parent cis isomer followed glucuronidation rat mouse produced oxidative metabolites cis isomer including direct glucuronides sulfates tanzisertib cis isomer enzymology oxido reductive pathways revealed human aldo keto reductases akrc responsible oxido reduction tanzisertib keto tanzisertib characterizations enzyme kinetics revealed akrc high affinity reduction keto tanzisertib tanzisertib compared isoforms results demonstrate unique stereoselectivity reductive properties documented human akrc enzymes substrate characterization ugt isoenzymes glucuronidation tanzisertib revealed tanzisertib glucuronide catalyzed ugta glucuronidation catalyzed ugtb
broadly neutralizing antibodies bnabs elicited response hiv infection extraordinarily mutated one goal hiv vaccine development induce antibodies similar potent broad bnabs isolated infected subjects effective bnabs high mutation frequencies indicative long periods continual activation necessary acquire bnab phenotype affinity maturation understanding mutational patterns define maturation pathways bnab development critical vaccine design efforts recapitulate vaccination successful routes neutralization breadth potency occurred natural infection studying mutational changes occur affinity maturation however requires accurate partitioning sequence data cell clones identification starting point cell clonal lineage initial rearrangement describe statistical framework used perform tasks recent advancement similar computational methods many hiv ancestral antibodies inferred synthesized structures determined allowed first time investigation structural mechanisms underlying affinity maturation process hiv antibody development review learned atomic level structural characterization affinity maturation hiv antibodies implications vaccine design
transforming growth factor tgf beta inhibitors development decades outmost results promising candidates latest clinical results asco meeting converging evidences suggest moved promising effective drug nominees
genetic findings past years provided ample evidence substantial etiologic heterogeneity dystonic syndromes increasing number genes identified mendelian forms isolated combined dystonias using classical genetic mapping whole exome sequencing techniques precise role molecular pathogenesis still largely unknown also role genetic risk factors etiology sporadic dystonias still enigmatic systematic ascertainment precise clinical characterization large cohorts dystonia combined systematic genetic studies able unravel complex network factors determine disease risk phenotypic expression
ceramidases catalyze cleavage ceramides sphingosine fatty acids previously reported use rbm fluorogenic ceramide analogs determine acidic ceramidase activity work investigated activity amidohydrolases rbm compounds bacterial human purified neutral ceramidases ncs well ectopically expressed mouse neutral ceramidase hydrolyzed rbm different selectivity depending acyl chain length hand microsomes alkaline ceramidase acer knockdown cells less competent hydrolyzing rbmc rbmc rbmc controls microsomes acer acer overexpressing cells showed activity toward rbm substrates conversely acylethanolamine hydrolyzing acid amidase naaa overexpressing cells hydrolyzed rbmc rbmc acidic overall acer lesser extent naaa hydrolyze fluorogenic rbm compounds although selectivity substrates toward ceramidases modulated length acyl chain none specific particular enzyme despite lack specificity substrates prove useful library screening programs aimed identifying potent selective inhibitors acer
reproduction energetically costly females frequently trade reproductive effort allocation physiological processes one processes maintenance functional immune defence however interactions immunity reproduction rarely explored mammals natural conditions study females individually marked european rabbit oryctolagus cuniculus colony measured different components maternal immune system peripheral blood serum day parturition associated variation measures differences mothers reproductive effort used total litter mass measure mother current reproductive effort addition recorded whether mothers gave birth nursed another litter shortly considered measure prior reproductive effort mothers higher current prior reproductive effort showed generally lower concentrations white blood cells particular neutrophils lymphocytes higher activity complement system higher igg serum concentrations females lower reproductive effort obtained similar results comparing individual changes immune parameters measured post partum across repeated reproductive events cell concentrations neutrophils lymphocytes increased individual females decreased reproductive effort contrast igg serum concentrations activity complement system increased mothers increased reproductive effort conclusion results underline differential responses different branches maternal post partum immune system variation reproductive effort one hand study indicates females might compromise least cellular immune parameters reproduction hand positive association igg concentrations reproductive effort could adaptive higher litter mass higher number pups requires intensified transfer immune parameter via placenta colostrum milk positive association might constitute additional immunological component energetic costs reproduction
difficult measure human metabolism ability directly according thermoregulation system inner metabolic information could send outer induce temperature skin surface change change includes metabolic heat generation heat transfer blood perfusion based infrared thermograph paper analyzes temperature curves different population using independent component analysis ica improve identification body metabolic characteristics access numerical assessment metabolic parameters
hemispheric low grade gliomas account second common location pediatric low grade gliomas plggs cerebellum pathological spectrum includes gangliogliomas dysembryoplastic neuroepithelial tumors dnets diffuse astrocytomas pilocytic astrocytomas pleomorphic xanthoastrocytomas pxas among others clinically hemispheric plggs represent well recognized cause intractable epilepsy children adolescents excellent long term outcome surgery remains cornerstone patients gross total resection typically need therapies recent literature hemispheric plggs reviewed provide date overview molecular cell biology tumors hemispheric plggs harbor multiple alterations involving brafve fgfr ntrk myb mybl idh braf kiaa fusions however clinical significance alterations still defined role ras mapk mutations alterations hemispheric plggs interest diagnostic prognostic therapeutic perspectives molecular testing tumors encouraged since findings important impact prognosis also therapeutic strategies
increasing evidence suggests human cytomegalovirus hcmv associated many human malignancies however prevalence gastric cancer clinical association remain unknown hcmv igg igm antibodies sera patients healthy controls detected using microparticle enzyme immunoassay prevalence hcmv genes among tumor tissues adjacent normal specimens measured polymerase chain reaction pcr nested pcr quantitative real time pcr pcr used determine viral load virus localization neoplastic tissues determined immunohistochemistry significant difference hcmv igg igm seropositivity found patients healthy group however overall hcmv dna positivity rate significantly higher cancerous tissue compared paired normal tissue hcmv infection mainly localized tumorous epithelium pcr hcmv positive specimens indicated viral copy number notably higher tissues adjacent normal specimens clinical statistical analysis indicated hcmv load tumor tissue positively associated lymphatic metastasis area receiver operating characteristic roc curve data clearly provide prevalence hcmv patients conclude hcmv infection malignant tissues might associated carcinogenesis progression possibly relates lymphatic metastasis elsevier inc rights reserved
fusarium rot caused fusarium oxysporum gladioli fog one serious diseases gladiolus field bulbs storage order study mechanisms pathogenesis fungus transformed fog agrobacterium tumefaciens binary vectors containing hygromycin phosphotransferase hph gene fluorescence reporter genes egfp green eyfp yellow ecfp cyan using agl strain tumefaciens hygromycin resistant colonies observed acetosyringone added cultivation medium transformed colonies clearly visible cultivated cellophane membrane hybond membrane transformed lines stably maintained four serial passages medium containing hygromycin expressed green yellow cyano fluorescence pcr hph specific primers southern blotting hph specific probe positive hyg lines untransformed isolate cyano fluorescence ecfp transformed isolate clearly distinguishable green autofluorescence gladiolus roots signifying potential lines histopathological investigations transformed lines useful identifying pathogenicity related genes screening transgenic resistance studies host pathogen interactions
background differences genetics receptor expression phenotypes invasive ductal breast cancer idc impact prognosis treatment response immunohistochemistry ihc used technique idc phenotyping limitations including invasiveness explored possibility contrast enhanced positron emission tomography magnetic resonance fdg pet discriminate idc phenotypes methods idc patients ihc assessment oestrogen receptor progesterone receptor human epidermal growth factor antigen underwent fdg pet magnetic resonance perfusion biomarkers apparent diffusion coefficient adc standard uptake value suv compared ihc markers phenotypes using student test one way anova results tumours demonstrated higher kep mean suvmax tumours tumours displayed higher adc mean kep mean suvmax tumours adc mean discriminated tumours pet biomarkers correlated ihc phenotype patients conclusions positron emission tomography magnetic resonance might non invasively help discriminate idc phenotypes helping optimise individual therapy options
study examines characteristics data sharing data use genetics heredity data citation common study applies exploratory method data citation relatively new area data citation index dci web science selected dci provides single access point data repositories worldwide two million data studies datasets across multiple disciplines monitors quality research data peer review process explore data citations genetics heredity case study examining formal citations recorded dci informally sampling selection papers implicit data citations within publications citer based analysis conducted order remedy self citation data citation phenomena explore sampled citing articles order identify factors influence data sharing data use including references main text supplementary data information acknowledgments funding information author information web author resources study unique relies citer based analysis approach analyzing peer reviewed published data data repositories citing articles highly productive authors data sharing prevalent research intended provide methodological practical contribution study data citation
background vascular dementia common disorder resulting considerable morbidity mortality determining extent genes play role disease susceptibility pathophysiological mechanisms could improve understanding vascular dementia leading potential translation knowledge clinical practice discussion review discuss currently known genetics vascular dementia identification causal genes remains limited monogenic forms disease findings sporadic vascular dementia less robust however progress genetic research associated phenotypes cerebral small vessel disease alzheimer disease stroke potential inform genetics vascular dementia conclude providing overview future developments field work could impact patients clinicians conclusion genetic background vascular dementia well established monogenic disorders remains relatively obscure sporadic form work needed providing robust findings might eventually lead clinical
lipid droplets lds highly dynamic organelles store neutral lipids also involved multiple cellular processes dysregulation lipogenesis lipolysis greatly contributes pathogenesis several human diseases including obesity diabetes fatty liver disease rab proteins found associated lds proteomic studies also known extensively regulate intracellular membrane traffic suggesting lds actively communicate membrane compartments maintain energy homeostasis review discusses recent studies provide mechanistic insights regulation formation catabolism rab proteins mammalian cells
cobalt containing metal metal hip replacements associated adverse reactions metal debris armd including inflammatory pseudotumours osteolysis aseptic implant loosening exact cellular molecular mechanisms leading responses unknown cobalt ions activate human toll like receptor tlr innate immune receptor responsible inflammatory responses gram negative bacterial lipopolysaccharide lps investigated effect mediated tlr activation human microvascular endothelial cells hmec focusing secretion key inflammatory cytokines expression adhesion molecules also studied role tlr mediated adhesion molecule expression monomac macrophages show increases secretion inflammatory cytokines including hmec effects tlr dependent prevented small molecule tlr antagonist increased tlr dependent expression intercellular adhesion molecule icam also observed endothelial cells macrophages furthermore demonstrate first time activation tlr upregulates secretion soluble adhesion molecule sicam endothelial cells macrophages although sicam generated activity matrix metalloproteinase mmp find changes mmp expression following stimulation summary show induce endothelial inflammation via activation tlr also identify role tlr mediated changes adhesion molecule expression finally sicam novel target investigation armd studies
high levels homologous recombination induced meiosis meiotic recombination initiated programmed formation dna double strand breaks dsbs conserved meiosis specific protein spoil meiotic dsbs formed random along chromosomes formed clusters known recombination hot spots understand regulation initiation step meiotic recombination determining timing location meiotic dsbs essential chapter describe method detect genome wide meiotic dsbs using combination pulsed field gel electrophoresis southern blotting
oceanic fixing cyanobacterium trichodesmium spp form extensive surface blooms contribute significantly marine carbon nitrogen cycles oligotrophic subtropical tropical oceans trichodesmium grows salinities parts per thousand ppt yet salt acclimation strategy remains enigmatic genome trichodesmium erythraeum strain ims lacks genes biosynthesis known compatible solute using nmr liquid chromatography coupled mass spectroscopy identified main compatible solute erythraeum strain ims quaternary ammonium compound trimethyl homoserine homoserine betaine elucidated biosynthetic pathway identification compatible solute explains trichodesmium spp thrive marine system varying salinities provides insight diversity microbial salt acclimation
normal somatic cells terminal restriction fragments trf length age inversely correlated used determine individual age however little known quantitative relationship human telomeres age aim present study investigate age gender ethnicity related changes telomere length human peripheral blood leukocytes pbls changes age telomere lengths assessed southern blotting results shown telomeres shorten human pbls age dependent manner formula age estimation according telomere shortening age year mean trf length analyzed mean trf length males females found males shorter telomeres females moreover compared trf length tibetan han population china found telomere length differ populations conclude estimation human age according telomere shortening pbls novel method especially morphologic information furthermore gender must considered age estimation carried based telomere shortening
great interest study brown fat importance human metabolism since routine use fluorodeoxyglucose fdg positron emission tomography computed tomography pet imaging recognized brown adipose tissue bat often visualized adults bat typically appears symmetrical uptake fdg frequently seen cervical supraclavicular region report describe cases horner syndrome case surgical sympathectomy unilateral fdg uptake bat contralateral affected side imaging study emphasizes importance sympathetic innervation activation bat adipose tissue classified coloration types white adipose tissue bat white adipose tissue composed single lipid droplet acts primary site energy storage modulator whole body metabolism insulin resistance bat characterized small cells multilocularity large number mitochondria increased vascularity abundant sympathetic noradrenergic innervations brown adipocyte uncoupling protein mediates thermogenesis thermogenesis bat controlled norepinephrine released sympathetic nervous system interacts mainly beta adrenergic receptors bat bat uptake fdg surrogate imaging glucose metabolism metaiodobenzylguanidine mibg fluorodopamine surrogates imaging sympathetic innervation described recent study fdg showed functional bat prevalent adult humans significant female predominance conspicuous bat depot detected human adult pet technique localizes supraclavicular cervical area may also found paravertebral mediastinal perinephric fat physiologic uptake supraclavicular cervical region generally symmetric use pet imaging may provide insight physiology regulation bat present cases illustrate imaging importance sympathetic innervation activation bat
aim explore exact interaction notch transforming growth factor tgf beta signaling liver fibrosis methods established rat model liver fibrosis induced concanavalin peripheral blood mononuclear cells pbmcs isolated modeled rats cultured secretase inhibitor dapt tgf beta inhibitor mrna levels notch tgf beta signaling detected quantitative real time polymerase chain reaction expression notch tgf beta proteins analyzed western blotting results compared control rats notch tgf beta signaling activated pbmcs model rats administration dapt tgf beta inhibitor suppressed notch tgf beta signal transducer pbmcs model rats dapt reduced mrna protein expression tgf beta signaling tgf beta smad tgf beta inhibitor also downregulated notch hes hes mrna protein expression notch signaling pathway conclusion notch tgf beta signaling play role liver fibrosis tgf beta signaling upregulates notch signaling promotes tgf beta signaling
mitochondrial toxicity nucleoside reverse transcriptase inhibitors nrtis due inhibition mitochondrial dna mtdna polymerase gamma pol gamma resulting blockade mtdna replication subsequent disruption cellular energetics mtdna pol gamma involved mtdna replication also responsible mtdna repair hypothesize mitochondrial oxidative stress leads changes balance mtdna repair mutation following stavudine treatment however mechanisms underlying changes mtdna base excision repair mtber lead mtdna mutation remain unclear test hypothesis total mitochondrial repair capability different steps mtber mtdna mutations loop oxidative stress assessed cultured huh human hepatoblast cells treated weeks assessment denaturing southern blotting quantitative pcr revealed significantly reduced vivo repair damaged mtdna huh cells reduced total vitro mtber dna pol gamma capability affect mtdna oxoguanine glycosylase apurinic apyrimidinic endonuclease activity huh cells addition treatment associated significant increase frequency mtdna mutations huh cells conclusion treatment reduces mtber contributes mechanistically nrti induced mtdna mutation events may potentially associated diseases linked mtdna mutation published elsevier
housekeeping genes widely used internal controls gene expression normalization western blotting northern blotting pcr etc generally thought expressed cells organism similar levels assumed genes required maintenance basic cellular function constitutive genes however real time pcr experiments revealed expression may vary depending developmental stage type tissue examined experimental condition date histological data expression available embryonic development present study compared histological expression profile two commonly used housekeeping genes gapdh beta actin developing chicken embryo using section whole mount situ hybridization supplemented pcr results show neither gapdh mrna beta actin mrna expressed cell types tissues high levels strikingly expression levels low organs moreover two genes show partially complementary expression patterns liver vascular system digestive tract example gapdh strongly expressed liver beta actin lower levels arteries vice versa beta actin strongly expressed gizzard gapdh almost absent cardiac muscle cells researchers consider histological results using gapgd beta actin gene expression normalization experiments
purpose presence activated brown adipose tissue abat associated reduced risk obesity adults aimed investigate whether presence abat patients undergoing fdg pet examinations related blood lipid profiles liver function prevalence non alcoholic fatty liver disease nafld methods retrospectively prospectively analysed fdg pet scans consecutive patients referred nuclear medicine department marmara university school medicine outpatient oncology clinics july june variety diagnostic reasons attenuation coefficients liver spleen determined least five different areas blood samples obtained pet assess blood lipid profiles liver function results total screened individuals fulfilling inclusion criteria study demonstrated brown fat tissue uptake abat subjects adjustment potential confounders individuals without evidence abat pet abat subjects enrolled comparison purposes abat group lower total cholesterol low density lipoprotein cholesterol alanine aminotransferase aspartate transaminase levels whereas found significant differences serum triglyceride high density lipoprotein cholesterol levels two groups prevalence nafld significantly lower abat abat subjects conclusion study showed presence abat adults positive effect blood lipid profiles liver function associated reduced prevalence nafld thus data suggest activating brown adipose tissue may potential target preventing treating dyslipidaemia nafld
hepatitis virus hbv infection one major risk factors leading development hepatocellular carcinoma hcc hepatitis surface antigen hbsag plays pivotal role hbv related hcc pathogenesis toll like receptor tlr also considered mediate tumor progression however interaction hbsag tlr hcc progression remains unclear thus aim study explore effect hbsag tlr pathway growth invasion hbv related hcc cells examine potential mechanisms involved expression tlr measured two different hcc cell lines hepg hepg without recombinant hbsag real time reverse polymerase chain reaction western blot cellular proliferation invasion cytokine productions downstream signaling pathways also measured tlr silencing hepg cells response hbsag stimulation mrna protein levels tlr significantly elevated hepg cells hepg cells hbsag simulation increased proinflammatory cytokine production invasion hepg cells process inhibited tlr silence however tlr sirna transfection alone affect bioactivities tumor cells moreover hbsag increased expression myd phosphorylation kappa pmapk downregulation tlr inhibited hbsag induced myd kappa pmapk hepg cells conclusion hbsag stimulation promotes invasion hbv related hcc cells tlr myd kappa signaling pathway may involved procession upregulation cytokine production interaction tlr hbsag may contribute poor prognosis hbv related hcc
report cloning glycoside hydrolase family ghf gene rice oryza sativa sasanishiki oscela corresponding auxin induced kda endo beta glucanase egase enzyme reveals broad substrate specificity respect sugar backbones glucose xylose beta glycans type cell wall oscela encodes amino acid polypeptide ortholog tomcel tomato egase containing carbohydrate binding module cbm sequence terminus expression four rice egase genes including oscela showed different patterns organ specificity responses auxin oscela preferentially expressed initiation lateral roots subcultured root calli hardly expressed auxin induced coleoptile elongation seed calli contrast osceld korrigan kor homolog situ localization oscela transcripts demonstrated expression specifically regulated lateral root primordia lrp northern blotting analysis showed presence single product oscela contrast mass spectrometric analyses peptide fragments purified kda egase proteins immunogel blot analysis egase proteins root extracts using two antibodies internal peptide sequences oscela revealed entire cbm region post translationally truncated kda nascent protein generate kda egase isoforms analyses auxin concentration time course dependence accumulation two egase isoforms suggested translation post translational cbm truncation oscela gene may participate lateral root development
introduction recent approval adalimumab trade name humira abbvie inc fda treatment noninfectious intermediate posterior panuveitis marks first label non corticosteroid drug available ophthalmologists immunomodulatory imt biologic agents long shown effective inducing remission chronic uveitis remained orphan drugs due lack financial incentive perceived need areas covered provide detail background use adalimumab uveitic patients topics include pharmacology therapeutic indications usage dosage drug safety physician monitoring side effects adverse events expert opinion see approval adalimumab uveitis important milestone improving upon accepted standards care patients severe sight threatening disease implore medical professionals consider use imt biologic treatments patients recurrent non infectious uveitis referring ocular immunology uveitis specialists necessary
reported recently functional relevant cag trinucleotide repeat androgen receptor influences craving men alcohol withdrawal known modulate serum concentrations leptin affects hypothalamic appetite regulation plasma levels elevated chronic alcohol consumption normalize within periods abstinence associated craving aim study elucidate role leptin mediating effects mentioned polymorphism craving men undergoing alcohol withdrawal included male patients admitted detoxification treatment one established diagnosis alcohol dependence according dsm results show one hand negative associations number cag repeats leptin serum levels craving hand positive association leptin craving man alcohol withdrawal path analysis revealed direct mediated effects number cag repeats alcohol craving direct effects accounting indirect leptin mediated effects accounting total effect dysregulation sexual hormones influences human metabolism seems affect leptin homeostasis report suggests investigated polymorphism mediates effect craving men alcohol withdrawal mostly regulation leptin nevertheless future studies needed explore functionality androgen receptor gene terms craving pharmacogenomics journal doi tpj published online november
hypoxia inducible factor hif family transcription factors directs coordinated cellular response hypoxia includes transcriptional regulation number metabolic enzymes chuvash polycythemia autosomal recessive human disorder regulatory degradation hif impaired resulting elevated levels hif normal oxygen tensions apart polycythemia patients marked abnormalities cardiopulmonary function studies integrated metabolic function reported describe response patients series metabolic stresses exercise large muscle mass cycle ergometer exercise small muscle mass calf muscle allowed noninvasive vivo assessments muscle metabolism using magnetic resonance spectroscopy standard meal tolerance test exercise patients early marked phosphocreatine depletion acidosis skeletal muscle greater accumulation lactate blood reduced maximum exercise capacities muscle biopsy specimens patients showed elevated levels transcript pyruvate dehydrogenase kinase phosphofructokinase muscle pyruvate kinase cell culture range experimental manipulations used study effects hif cellular metabolism however approaches provide potential investigate integrated responses level whole organism although relatively subtle disorder study reveals striking regulatory role hif metabolism exercise humans findings significant implications development therapeutic approaches targeting hif pathway
chorioamnionitis acute inflammation gestational extraplacental membranes commonly caused ascending microbial infection associated adverse neonatal outcomes including preterm birth neonatal sepsis cerebral palsy decidua outermost layer gestational membranes likely important initial site contact microbes ascending infection however little known decidual stromal cells dscs respond microbial threat defining contributions individual cell types complex medley inflammatory signals chorioamnionitis could lead improved interventions aimed halting disease review available published data supporting role dscs responding microbial infection special focus expression pattern recognition receptors evidence responsiveness pathogen sensing dscs likely play important role sensing responding infection pathogenesis chorioamnionitis important knowledge gaps areas future research highlighted
complex formed calcium cation deprotonated hishis dipeptide complex adopts charge solvation structure weak binding main group metal cation interacts oxygens peptide carbonyl moiety deprotonated terminus contrast much stronger binding cation deprotonates peptide nitrogen induces iminolate ligand structure hishis complex ion combination infrared multiple photon dissociation irmpd spectroscopy quantum chemistry evidence two representative binding motifs iminolate coordination pattern identified characterized hishis complex serves model case nickel complexes poly histidyl domains thereby also interest better understand fundamentals immobilized metal ion affinity chromatography well factor chemistry enzymology elsevier inc rights reserved
comparison sensitivities two molecular assays designed target multi copy sequences toxoplasma gondii genomic region respectively detecting gondii swine muscle assessed diaphragm pillars obtained slaughtered pigs managed intensive farms central italy genomic dna extracted tissues gondii sequences amplified specific pcr protocols toxoplasma gondii dna detected samples good correlation kappa results obtained targeting two different genetic markers however pcr assay overall detected significantly higher number gondii positive samples samples pcr protocol results show standardized pcrs applied muscle tissues detect high rate gondii infection multi target pcr approach recommended accurate diagnosis infection swine also used food testing elsevier ltd rights reserved
bacteria belonging planctomycetes verrucomicrobia chlamydiae pvc superphylum interest biotechnology evolutionary cell biology ecology human health pvc species lack number typical bacterial features others possess characteristics usually associated eukaryotes archaea example planctomycetes phylum atypical absence ftsz protein presence developed endomembrane system studies cellular molecular biology infrequent characteristics currently limited due lack genetic tools species far genetic manipulation planctomycetes described planctopirus limnophila show simple approach allows mutagenesis homologous recombination three different planctomycetes species gemmata obscuriglobus gimesia marls blastopirellula marina addition limnophila thus extending repertoire genetically modifiable organisms superphylum although planctomycetes show high resistance antibiotics used kanamycin resistance genes obscuriglobus limnophila mans tetracycline resistance genes marina markers mutant selection cases plasmids introduced strains mating electroporation genetic modification verified southern blotting analysis addition show green fluorescent protein gfp expressed four backgrounds escherichia coil promoter genetic manipulation achievement four phylogenetically diverse planctomycetes enable molecular studies strains opens door developing genetic approaches planctomycetes also species superphylum lentisphaerae
immature embryos twenty six wheat genotypes regenerated murashige skoog medium supplemented different levels plant growth regulator pgrs level found favorable callus inducer bobwhite exhibited maximum embryogenic callus production followed ufaq punjab sehar regeneration potential selected wheat genotypes evaluated two pgrs indole acetic acid iaa kinetin furfuryladenine different combinations auxin cytokinin combination iaa kinetin media promising regeneration variety bobwhite presented highest plantlet frequency immature embryos cultivar sehar utilized agrobacterium mediated transformation gus activity observed callus determine expression pattern transgenic plants sehar confirmed pcr southern blotting transformation efficiency achieved reinstated viability optimized regeneration system particular wheat genotype utilization crop improvement program friends science publishers
circulating tumor cells ctcs rare cancer cells released tumors blood stream thought key role cancer metastasis investigation ctcs exciting area research remains infancy presence ctcs associated worse prognosis several major cancer types gastric cancer highly lethal malignancy serious public health concern east asia especially china urgent need identifying new better prognostic markers enhance diagnosis prognosis facilitate drug development improve treatment gastric cancer patients considerable interests gastric ctcs given potential use gastric cancer biomarkers review highlights recent advances studies gastric ctcs including isolation biological molecular characteristics gastric ctcs clinical significance
polygalacturonase isozyme isolated penicillium solitum decayed anjou pear fruit purified homogeneity multistep process gel filtration cation exchange chromatography revealed single activity peak analysis purified protein showed single band molecular mass kda fungal origin purified enzyme active optimum activity detectable maximum purified isozyme inhibited divalent cations analysis enzymatic hydrolysis products revealed polygalacturonic acid monomers oligomers purified enzyme isoelectric point associated glycosylated protein isozyme macerated fruit tissue plugs vitro produced similar fold soluble polyuronides pear apple tissue substantiates role postharvest decay data study show first time purified produced decayed anjou pear solitum weakly virulent fungus different produced fungus decayed apple
freshwater snakehead fish channa punctata perciformes channidae meerut india screened infection metacercaria eye vitreous humor brain cranial cavity analyzed molecular methods using pcr sequencing complete internal transcribed spacers ribosomal rna gene recovered metacercariae sites vitreous humor cranial cavity previously diagnosed diplostomulum cerebralis chakrabarti basis morphological characteristics combination molecular methods study depicts species genus tylodelphys diesing misinterpreted diplostomulum hence study validated status cerebralis cerebralis years original description present work might contribute expand knowledge identification biodiversity taxonomy diplostomids indian fishes
background recent evidence suggests aberrant activation hedgehog signaling gli transcription factors characteristic variety aggressive human carcinomas including colorectal cancer crc forkhead box foxm controls expression number cell cycle regulatory proteins foxm expression elevated broad range human malignancies suggests plays crucial role tumorigenesis however mechanisms underlying foxm expression fully understood aim investigate molecular mechanism gli regulates foxm crc methods western blotting immunohistochemistry ihc used evaluate foxm gli protein expression respectively crc tissues matched adjacent normal mucosa brdu bromo deoxyuridine clone formation assays used clarify influence foxm crc cell growth proliferation chromatin immunoprecipitation chip luciferase experiments performed explore potential mechanisms gli regulates foxm additionally protein mrna expression levels gli foxm six crc cell lines measured using western blotting real time pcr finally effect signaling expression foxm studied cell biology experiments effects signaling activation foxm inhibition distribution crc cells among cell cycle phases assessed flow cytometry results gli foxm abnormally elevated human crc tissues compared matched adjacent normal mucosa samples foxm downstream target gene transcription factor gli crc promoted crc cell growth proliferation moreover aberrant activation signaling promoted crc cell proliferation directly binding promoter foxm transactivating activity foxm crc cells conclusion dysregulation gli foxm axis essential proliferation growth human crc cells offers potent target therapeutic intervention crc
small rnas srnas short similar nucleotides noncoding rnas regulate cellular activities across bacteria salmonella enterica starved carbon energy source experience host genetic physiological changes broadly referred starvation stress response ssr attempt identify novel srnas contributing ssr control grew log phase starved starved cultures virulent salmonella enterica subspecies enterica serovar typhimurium strain comprehensively sequenced small rna transcriptomes strikingly employing novel strategy srna discovery based identifying dynamic transcripts arising gene empty regions identify wholly undescribed salmonella srna genes potentially regulating ssr averaging similar fold change expression log phase starved cells importantly expressions individual srna loci confirmed comprehensive transcriptome analyses northern blotting select candidates note find candidate srnas share significant sequence identity characterized srnas bacteria similar srnas likely assume characteristic srna structural conformations addition find candidate srnas either overlap neighboring mrna loci share significant sequence complementarity mrnas transcribed elsewhere genome strongly suggesting regulate expression transcripts via antisense base pairing finally addition work resulting identification entirely novel salmonella enterica genes likely participating ssr also find evidence suggesting srnas significantly prevalent currently appreciated salmonella srnas may actually number thousands
newest weapon cancer therapy checkpoint inhibition result basic immunology research success therapy based fact upon light microscopy many solid tumors harbor lymphocytic cells infiltrating tumor tils many solid tumors presence tils prognostic ipilimumab first monoclonal antibody developed target present cells becoming activated ctla malignant melanoma ipilimumab showed beneficial effect compared placebo peptide however therapy antibody harbors significant toxicity meanwhile targets also expressed late activated cells identified therapies antibodies inhibiting less toxic although antibodies show response minority patients benefit seems durable patients solid tumors melanoma non small cell lung cancer nsclc treatment inhibitors resulted significant prolongation survival even first line treatment drugs approved many indications important know drugs side effects resistance towards drugs caused low expression natural ligand tumor tissue well acquired loss signal transduction interferon related genes jak jak respectively also new cancer therapy bispecific cell engager monoclonal antibodies bites blinatumomab autologous chimeric antigen receptor modified cells car later proven efficacy mainly hematological neoplasias precursor dramatic costs new drugs enormous impact health care systems near future
physiology cells cultured vitro depends obviously external conditions including nutrients present culture medium order test influence parameter macrophages grown either rpmi dmem compared combination targeted analyses proteomic approach two media differ glucose amino acids vitamins concentrations significant differences cell cycle percentage phagocytic cells media although phagocytic capacity number phagocytized particles higher dmem conversely found cells grown rpmi produced nitric oxide response lipopolysaccharide proteomic study highlighted differences affecting central metabolism nucleotide metabolism cytoskeleton protein degradation cell signaling furthermore proteomics showed cells grown rpmi dmem exposed copper oxide nanoparticles respond rather differently proteins similarly modulated cells grown media taken together results show basal state cells grown two different media different may affect way respond external stimulus stress
integration leads disruption circular hpv genome considered critical albeit obligatory step carcinogenic progression although cervical carcinomas extrachromosomal hpv plasmid genomes described virus integrated hpv positive cervical tumours limited information available hpv integration head neck tumours hnc study characterised physical status hpv set tonsillar tumour samples using different methods mapping integration breakpoint mrna level race based amplification papillomavirus oncogene transcripts apot assay southern blot furthermore impact hpv integration patients prognosis evaluated larger set patients head neck cancer based analysis mrna hpv integrated host genome hpv positive samples extrachromosomal mixed form present fresh frozen samples apot mapping results agreement results confirmed using southern blotting furthermore type exact site integration determined survival analysis patients revealed hpv positivity tumour size lymph node positivity factors influence disease specific survival however statistically significant difference found disease specific survival patients hpv positive integrated extrachromosomal mixed forms virus
arabidopsis thaliana long established model species plant molecular biology genetics genomics studies thaliana gene function provide basis formulating hypotheses designing experiments involving plants including economically important species comprehensive understanding thaliana genome detailed accurate understanding expression associated genes therefore great importance fundamental research practical applications goal reliant development new genetic genomic resources involving new methods data acquisition analysis present genome wide analysis thaliana gene expression profiles across different organs developmental stages using high throughput transcriptome sequencing expression protein coding genes well stability spatiotemporal specificity assessed organs developmental stages search alternative splicing events identified previously unreported splice junctions approximately occurred intergenic regions potentially represent novel spliced genes included tair database data housed open access web based database trava transcriptome variation analysis http travadb org allows visualization analysis gene expression profiles differential gene expression organs developmental stages
main focus enzymology enzyme rates substrate structures reactivity whereas role solvent dynamics mediating biological reaction often left aside owing complex molecular behavior used integrated ray terahertz based time resolved spectroscopic tools study protein water dynamics proteolysis collagen like substrates matrix metalloproteinase show equilibration structural kinetic transitions millisecond timescale degradation two model substrates collagen gelatin different supersecondary structure flexibility unexpectedly detected changes collective enzyme substrate water coupled motions persisted well beyond steady state substrates displaying substrate specific behaviors molecular dynamics simulations showed hydration funnel gradient retardation hydrogen bond dynamics toward active site substrate dependent exhibiting steeper gradient complex enzyme collagen system long lasting changes protein water dynamics reflect collection local energetic equilibrium states specifically formed substrate conversion thus observed long lasting water dynamics contribute net enzyme reactivity impacting substrate binding positional catalysis product release
camp dependent protein kinase protein kinase plays key role control eukaryotic cellular activity enzymology free living nematode caenorhabditis elegans deceptively simple single genes encode catalytic subunit kin regulatory subunit kin kinase anchor protein akap aka nonetheless able facilitate comprehensive array camp mediated processes model multicellular organism previously demonstrated elegans many different isoforms subunit arise consequence alternative splicing strategies report occurrence transcripts encoding novel isoforms subunit elegans place exons transcripts include coding sequences novel exons directly linked exon thereby generating isoforms novel termini subunits containing exon encoded terminal polypeptide sequence detected extracts prepared mixed populations elegans note observation subunit isoforms containing exon exon encoded polypeptide sequences lack dimerisation docking domains conventionally seen subunits means unlikely participate formation tetrameric holoenzymes additionally unlikely interact akap therefore possible elegans addition tetrameric holoenzymes also sub population dimeric enzymes tethered akaps furthermore inspection terminal sequence encoded exon suggests isoform likely target myristoylation although unusual number similarly myristoylatable subunits range different species present databases suggesting may generally observed feature subunit structure occurrence subunit isoforms without dimerisation docking domains without myristoylatable termini species would suggest control activity may complex hitherto thought elsevier inc rights reserved
frontotemporal lobar degeneration highly familial disease common known genetic cause repeat expansion mutation gene corf identified brothers expansion mutation corf using southern blotting undetectable using repeat primed polymerase chain reaction sequencing using high concentrations dna denaturants bacterial artificial chromosome clone obtained one brothers identified base pair deletion adjacent expansion presumably confers strong secondary structure interferes genotyping using alternative method identified missed expansion carriers cohort number increased approximately observation important implications patients undergoing genetic testing corf authors published elsevier inc
current study aimed investigate potential role mir inhibition ovarian cancer progression stromal cell derived factor sdf chemokine receptor type cxcr pathway provide theoretical basis diagnosis treatment ovarian cancer human ovarian cancer ovcar cells transfected mir short hairpin rna shrna effect mir mrna expression levels cxcr analyzed using reverse transcription quantitative polymerase chain reaction effects mir ovcar cell proliferation invasion apoptotic ability detected using dimethyl thiazolyl diphenyl tetrazolium bromide assay matrigel method annexin fluorescein isothiocyanate flow cytometry respectively addition expression levels sdf cxcr pathway associated proteins determined western blot analysis mrna expression levels cxcr ovcar cells transfected mir shrna significantly downregulated compared blank control groups furthermore compared two control groups current results revealed mir inhibited cell proliferation suppressed invasive ability induced cell apoptosis ovcar cells finally observed mir functioned tumor inhibitor sdf cxcr pathway suppressing expression levels extracellular signal regulated kinase erk erk matrix metalloproteinase proteins present study suggested mir may function promising tumor inhibitor ovarian cancer targeting sdf cxcr pathway
coal mining accident key success coal mining emergency rescue trapped miners still alive rescue passage made new life saving equipment life saving foods used maintain viability self saving ability front line miners trapped coal mining accident life saving food effectively extend self save time trapped miners essentially improve rescued possibility trapped miners amount human metabolism measured hot humid environment determines salt targets nutrition indexes life saving food according particularity underground environment passage explores method store life saving food reasonably select storage locations reviewing application mine life saving food conclude self saving food better future economic social aspects still needs demonstrated whether necessary carry food human body life saving food exposed hot humid environment deterioration cure still unclear
objective investigated expression potential roles interleukin interferon ifn gamma tumor necrosis factor tnf patients adenomyosis materials methods prospective study examined women histologically proven adenomyosis women without adenomyosis undergoing hysterectomy non endometrial pathology department gynaecology first hospital jilin university changchun china december september serum samples collected patients concentrations serum ifn gamma tnf measured enzyme linked immunosorbent assay elisa calculated specificity sensitivity cytokines taking cancer antigen reference distinguishing cases controls receiver operating characteristic roc curve correlation individual cytokines also analysed results detectable cytokines sera samples controls eight cytokines detectable sera samples patients adenomyosis significantly higher levels serum significantly lower levels serum tnf detected adenomyosis patients compared controls conclusions serum levels tnf varied significantly cases controls could involved pathogenesis adenomyosis
aim study reveal molecular mechanism involved multidrug resistance virulence campylobacter jejuni isolated broiler chickens virulence six multidrug resistant jejuni determined vitro vivo methods novo whole genome sequencing technology molecular biology methods used analyze genomic features associated multidrug resistance virulence selected isolate jejuni comparative genomic analyses revealed large number single nucleotide polymorphisms deletions rearrangements inversions jejuni compared reference jejuni genomes emergence thr mutation gyra gene mutation rrna gene teto apha aade genes ptet plasmid jejuni contributed multidrug resistance fluoroquinolones macrolides tetracycline aminoglycosides combination multiple virulence genes may work together confer relative higher virulence jejuni existence mobile gene elements ptet crispr cas system jejuni may play important role gene transfer immune defense present study provides basic information phenotypic genomic features jejuni strain recently isolated chicken displaying multidrug resistance relatively high level virulence
introduction intraoral mucosa associated lymphoid tissue malt lymphoma rare lymphoma good prognosis diagnosed correctly treated time presentation case year old woman referred department asymptomatic swelling left hard palate computed tomography magnetic resonance imaging revealed mass left hard palate performed pre surgery biopsy however difficult differentiate malt lymphoma reactive lymphoproliferative disorders via gross microscopic examination although lesion completely excised histological findings allow definitive diagnosis due absence visible monoclonality performed polymerase chain reaction pcr using dna extracted formalin fixed paraffin embedded surgical samples capillary electrophoresis showed monoclonal peaks immunoglobulin heavy chain gene rearrangement thus facilitating definitive diagnosis malt lymphoma discussion pcr technique rapid accurate enables definitive diagnosis without relying traditional histological molecular diagnostic techniques southern blotting conclusion suggest histological examination ambiguous fresh material insufficient pcr performed using paraffin embedded materials definitively diagnose low grade lymphomas malt lymphoma authors published elsevier ltd behalf surgical associates ltd
transforming growth factor tgf beta strongly associated osteoblast differentiation mechanical stress including compressive force also involve osteoblast differentiation via alteration expression bone specific transcription factors namely runx osterix however role tgf beta mediating effects osteoblasts remains unclear present study examined effects expression tgf beta tgf beta tgf beta type receptor beta beta runx osterix osteoblasts also investigated effects phosphorylation smad smad located downstream beta effect beta inhibitor expression runx osterix phosphorylation smad smad additionally examined cultured mct osteoblast like cells subjected continuous tgf beta tgf beta beta beta runx osterix expression measured real time polymerase chain reaction western blot analysis phosphorylation levels smad smad determined western blot analysis mrna protein expression tgf beta tgf beta significantly increased relative control cells beta beta expression unaffected either condition also increased phosphorylation smad smad expression runx osterix increases attenuated pretreatment present findings indicate induce bone specific transcription factors via autocrine action induced tgf beta signaling osteoblasts
backgrounda functional polymorphism within opioid receptor oprm gene previously associated measures alcohol use sensitivity effects findings inconclusive recent study suggested second nearby variant within oprm robustly associated heroin dependence fully explained smaller observed association given evidence allele associated decreased oprm expression levels human brain current study sought test hypothesis represents causal variant within oprm increases risk variety alcohol use phenotypes methodsparticipants genotype phenotype data larger experimental study assessed measures subjective response alcohol alcohol use measures included self rating effects alcohol alcohol sensitivity questionnaire biphasic alcohol effects scale baes ratings subjective intoxication iii average number drinks per week past month resultscompared homozygous individuals carriers allele exhibited significantly lower retrospective self report levels alcohol sensitivity carriers allele also exhibited lower levels baes alcohol related stimulation alcohol challenge reported higher levels drinking last days exception lower levels baes alcohol related sedation variant show consistent significant association alcohol phenotypes presence conclusionsresults suggest may causally related alcohol use phenotypes could potentially account previously observed associations substance use phenotypes future studies may investigate potential causal relations among genetic variants oprm subjective response alcohol drinking phenotypes delineate effects
article reviews evolution diagnosis treatment hodgkin lymphoma since discovery morphological phenotypic molecular characteristics nodular lymphocyte predominant classical revised light recent molecular information possible impact identification risk groups well use targeted therapies seminal contribution gianni bonadonna developing new treatment strategies advanced early stage highlighted
human multipotent mesenchymal stromal cells hmscs possess ability differentiate osteoblasts utilized source bone regenerative therapy osteoinductive pretreatment induces osteoblastic differentiation hmscs vitro widely used bone tissue engineering prior cell transplantation however molecular basis osteoblastic differentiation induced osteoinductive medium oim still unknown therefore used next generation sequencer investigate changes gene expression osteoblastic differentiation hmscs hmscs used study possessed multipotency self renewal ability whole transcriptome analysis revealed expression zinc finger btb domain containing zbtb significantly increased osteoblastogenesis hmscs zbtb mrna protein expression enhanced culturing hmscs oim small interfering rna sirna mediated gene silencing zbtb decreased activity alkaline phosphatase alp expression osteogenic genes osteocalcin ocn bone sialoprotein bsp mineralized nodule formation induced oim sirna mediated gene silencing osterix osx known essential regulator osteoblastic differentiation markedly downregulated expression zbtb addition chromatin immunoprecipitation chip assays showed osx associated zbtb promoter region containing rich canonical sequence specific osx binding site findings suggest zbtb acts downstream transcriptional regulator osx useful late marker osteoblastic differentiation cell biochem wiley periodicals inc
background respiratory illnesses leading cause morbidity medical discharge military study aimed investigate effects baseline aerobic fitness haematological salivary mood variables simultaneously novel approach identify factors precipitating illness attrition rate recruits military training methods thirty five healthy male recruits army training regiment undertaking weeks training prospectively investigated run time used surrogate baseline aerobic fitness saliva venous blood samples analysed secretory iga full blood counts cell cytokine production interleukin respectively recruit completed questionnaires mood profile gastrointestinal upper respiratory tract symptoms urts results significant salivary haematological perturbations observed coincided increased duration urts week mood disturbance military training period start end leucocyte count decreased neutrophil percentage decreased lymphocyte increased neutrophil lymphocyte ratio decreased eosinophil increased start mid end monocyte increased mid end increased mid end significantly associated urts duration addition min increase increased recruit risk fold developing urts lasting average days week recruits ranked high urts duration slower low urts attrition rate reached conclusions least fit recruits may found training physically demanding reflected higher urts duration may led high attrition rate army worth considering baseline aerobic fitness might important factor illness development attrition rate recruits type military training
polyunsaturated fatty acids pufas vital normal growth development physiological function various tissues humans pufas immunomodulatory actions addition ability modulate inflammation vascular reactivity neurotransmission stem cell biology pufas metabolites possess pro anti inflammatory properties underlie actions involvement several diseases aspirin non steroidal anti inflammatory drug nsaid possesses cyclo oxygenase cox lipoxygenase lox inhibitory action enhances production anti inflammatory lipoxin called epi lipoxin aspirin triggered lipoxins atls addition low doses aspirin may interfere production prostacyclin pgi lipoxin pgi vasodilator platelet anti aggregator anti inflammatory actions may underlie beneficial actions aspirin paradoxically nsaids may actions aspirin pufa metabolism similar anti inflammatory compounds formed eicosapentaenoic acid epa docosahexaenoic acid dha action aspirin termed resolvins epa dha protectins maresins dha pufas arachidonic acid epa dha various products modulate inflammation immune response also possess actions various genes nuclear factors cyclic amp gmp protein coupled receptors gprs hypothalamic neurotransmitters hormones cytokines enzymes interact nitric oxide carbon monoxide hydrogen sulfide regulate formation action form new compounds several biological actions pleiotropic actions pufas metabolites may explain ability play role several physiological actions diseases big challenge harness actions prevent manage clinical conditions elsevier rights reserved
herpes simplex virus hsv infections central nervous system cns associated significant morbidity mortality rates children study assessed impact direct hsv dhsv pcr assay time result reporting duration acyclovir therapy children signs symptoms meningitis encephalitis total patients hsv pcr results cerebrospinal fluid csf samples included retrospective analysis divided preimplementation postimplementation groups preimplementation group csf testing performed using laboratory developed real time pcr assay postimplementation group csf samples tested using direct sample answer assay csf samples negative hsv patients groups prescribed acyclovir average hsv pcr test turnaround time postimplementation group reduced versus furthermore patients postimplementation group dhsv pcr results reported specimen collection mean time specimen collection acyclovir discontinuation shorter postimplementation group versus median duration acyclovir therapy also significantly reduced postimplementation group versus investigation suggests implementation rapid hsv pcr testing decrease turnaround times duration unnecessary acyclovir therapy
number times scientific article cited reflects impact specific field highly cited articles known citation classics aim characterize frequently cited articles chronic granulomatous disease cgd searched isi web science aug articles cited times evaluated several characteristics frequently cited article received citations citations mean citations recent article published articles published journals led new england journal medicine overall authors came countries united states america usa contributing articles national institute health common institution origin corresponding author common type articles basic science articles results provide insights cited research articles cgd since first description years ago
congenital heart disease common congenital anomaly representing important cause infant morbidity mortality congenital heart disease represents group heart anomalies include septal defects valve defects outflow tract anomalies exact genetic epigenetic environmental basis congenital heart disease remains poorly understood although exact mechanism likely multifactorial however development new technologies including copy number variants single nucleotide polymorphism nextgeneration sequencing accelerating detection genetic causes heart anomalies recent studies suggest role small non coding rnas micro rna congenital heart disease recently described epigenetic factors also found contribute cardiac morphogenesis review present past recent genetic discoveries congenital heart disease
participating undergraduate research pivotal experience students life science disciplines development critical thinking skills addition conveying scientific ideas oral written formats essential ensuring students develop greater understanding basic scientific knowledge research process modernizing current life sciences research environment accommodate growing demand students experiential learning needed developing implementing structured theory based approach undergraduate research life sciences specifically biochemistry successfully shown students provided high quality high impact research experience structure approach allowed students develop novel independent projects computational molecular modeling lab students engaged experience career goals problem solving skills time management skills independence research lab developed experiencing approach undergraduate research students reported feeling challenged think critically prepared future career paths approach allowed progressive learning environment undergraduate students could participate publishable research future areas development include implementation bench top lab extension disciplines beyond biochemistry study shown utilizing structured approach undergraduate research could allow students experience undergraduate research develop confident independent life scientists well prepared graduate schools professional research environments international union biochemistry molecular biology
method agrobacterium mediated transformation phosphomannose isomerase based selection system investigated cotyledons explants lotus corniculatus cultivar leo effects mannose shoot formation rooting evaluated choose appropriate selection pressure lotus corniculatus transformation complete inhibition murashige skoog medium supplemented mannose presence sucrose observed indicating lotus corniculatus incapable utilizing mannose carbon source mannose resistant shoots individual transformed lines selected early developmental stage identified pcr analysis resulting transformation frequency six randomly chosen pcr positive plantlets confirmed southern blotting pcr analysis demonstrate integration phosphomannose isomerase pmi gene chlorophenol red assays performed determine pmi enzyme activity results demonstrate pmi based selection highly efficient system lotus corniculatus transformation without requiring use conventional antibiotics herbicide marker genes
improved method southern dna northem rna blotting using mupide mini gel system described get sharp clear bands southern northern blotting min short gel electrophoresis instead several hours large gel electrophoresis conventional methods high electrical voltage pulse like current mupid mini gel system also allows reduction amount formaldehyde harmful reagent gel running buffer rna blotting minor modification dna rna blotting technique enables perform complete experimental procedure quickly economically less space conventional southern northern blotting well using extremely small amount formaldehyde rna blotting elsevier rights reserved
reporter mice widely used observe localization expression targeted genes protocol focuses strategy establish new transgenic reporter mouse model chose visualize interleukin gene expression cytokine important activities intestine contributes repair tissues damaged inflammation reporter systems offer considerable advantages methods identifying products vivo case studies first isolated cells tissues stimulated cells vitro normally secreted trapped inside cells using drug intracellular staining used visualize method identifies cells capable producing determine whether vivo reporter design includes inserting gene fluorescent protein tdtomato gene way fluorescent protein secreted therefore remains trapped inside producing cells vivo fluorescent producers visualized tissue sections vivo analysis flow cytometry actual construction process reporter included recombineering bacterial artificial chromosome contained gene engineered chromosome introduced mouse genome homeostatic reporter expression observed different mouse tissues including spleen thymus lymph nodes peyer patch intestine flow cytometry analysis colitis induced cell cdrbhigh transfer reporter expression visualized positive cells first present mesenteric lymph nodes accumulated inside lamina propria distal small intestine colon tissues strategy using bacs gave good fidelity reporter expression compared expression simpler knock procedures
haemophilus parasuis bacterium responsible glasser disease pathogen significant concern modern high health swine production systems little information regarding identity function virulence factors several important human mucosal pathogens including closely related bacterium haemophilus influenzae utilize iga proteases aid defeating host immune response facilitate disease unknown whether parasuis synthesizes product iga protease activity investigate potential virulence mechanisms parasuis evaluated five strains ability digest purified iga western blotting demonstrated cleavage swine iga human iga following incubation culture supernatants three strains two known cause invasive disease genes homology influenzae iga protease genes iga igab could identified parasuis strain using either pcr southern blotting results demonstrate novel iga protease produced strains parasuis cleaves swine iga heavy chain site found human iga published elsevier
aim present study investigate role chemokine motif ligand cxcl receptor chemokine motif receptor cxcr pathogenesis adenomyosis immunohistochemistry reverse transcription quantitative polymerase chain reaction analysis used measure protein mrna expression cxcl cxcr eutopic endometrial ectopic foci tissue samples samples total patients study group compared endometrial tissue samples patients underwent uterine fibroids surgery control group period data presented mean standard deviation analyzed spss software version analysis variance used group analysis pairwise comparison performed using fisher least significant difference post hoc test results present study revealed cxcl cxcr protein expression significantly increased ectopic foci tissue compared eutopic endometrial tissue samples patients cxcl cxcr protein expression ectopic foci eutopic endometrial tissue samples significantly increased compared control group group comparisons significant differences identified cxcl cxcr protein expression proliferative secretory phases within group furthermore cxcl cxcr mrna expression significantly increased ectopic foci tissue eutopic endometrial tissue compared control group group comparisons cxcl mrna expression markedly increased ectopic foci tissue compared eutopic endometrial tissue patients expression cxcr mrna significantly increased eutopic endometrial tissue compared ectopic foci tissue control group group comparisons significant differences identified cxcl cxcr mrna expression proliferative secretory phase within group conclusion cxcl cxcr may induce ectopia promote spread localized growth endometrial cells development
epstein barr virus ebv associated gastric carcinomas worldwide role virus tumorigenesis ebv associated gastric carcinoma ebvagc unclear previously reported gastric cancer cell line snu naturally infected ebv closely resembles ebvagc attempted eliminate ebv genome snu cells ascertain influence ebv ebvagc southern blotting fluorescence situ hybridization fish showed ebv genomes maintained episomes snu cells remove ebv episomes snu cells first cultured hydroxyurea containing medium months real time polymerase chain reaction fish results revealed evidence mediated ebv genome reduction although cell growth reduced acute treatment dose time dependent manners two small interfering rnas epstein barr nuclear antigen ebna abrogated ectopic ebna expression hela cells endogenous ebna expression snu cells together data suggest maintenance latent ebv infection essential viability ebvagc cells avoiding elimination ebv episomes cells
reciprocal signalling gene expression play cardinal role pathogen host molecular interactions prerequisite maintenance balanced homeostasis gene expression repertoire changes rickettsial infection glutathione transferases gsts among genes found regulated rickettsia infected dermacentor variabilis gsts well known play important part cellular stress responses host cloned two full length gsts variabilis dvgst dvgst comparison two dvgst molecules species indicate dvgst related mammalian class theta insect class delta gsts dvgst seem fall family northern blotting analyses revealed differential expression patterns dvgst dvgst transcripts found tick gut dvgst transcripts also present ovaries dvgst transcripts regulated upon tick feeding challenge fed adult ticks escherichia coli injection showed decreased transcript amounts compared ticks injected phosphate buffered saline sham naive ticks
transgenic pigs failed accord milk yield curve lactate rhfix vitamin dependent protein even fed enriched times higher nutritional requirement higher supplementation may required homozygous transgenic sows nursing divided control treatment groups respectively received enriched menadione soluble supplemented diet enriched diet days next lactation control sows received treatment previous treated fed control diet results revealed menadione treatment increased milk bioactivity rhfix day day gradually decreased day lactation control feeding bioactivity remained relatively unchanged however milk rhfix concentration ratio activated rhfix responded little treatment menadione induced bioactivity curve agrees known lactation pattern sow means rhfix secretion still galactopoietic requires high intake show ineffectual spend lactational carboxylation might common mammary dependent expression system effectively overcome high supplementation menadione folds improvement quality
present overview known endogenous plant compounds act inhibitors hormonal transport processes plants identity mechanism action also summarized commonly less commonly used compounds non plant origin synthetic drugs show least partial specificity transport transporters particular phytohormones main attention focused inhibitors auxin transport urgent need understand precisely molecular mechanism action inhibitors highlighted
purpose study effects topical ganciclovir gel cytomegalovirus cmv anterior uveitis tertiary uveitis referral center brussels belgium methods retrospective study patients clinical diagnosis cmv anterior uveitis endotheliitis demonstrated positive polymerase chain reaction goldmann witmer coefficient gwc results report series patients presenting clinical characteristics cmv anterior uveitis patients pretreatment follow months posttreatment follow months non asian patients clinical characteristics posner schlossman syndrome asian patient keratic precipitates like fuchs heterochromic iridocyclitis presentation uveitis unilateral patients visual acuity patients increased intraocular pressure iop mean iop mmhg end follow patients glaucoma needed glaucoma surgery mean final patients reached final patients significantly lower number recurrences year posttreatment pretreatment period mean time recurrence increased months treatment months treatment conclusion results suggest patients treated topical ganciclovir decreased frequency cmv anterior uveitis recurrences preserve relatively good central vision time however glaucoma frequent severe complication
tcr ligation critical selection activation integrin expression lymphocytes explored role tcr adaptor protein slp inkt cell biology compared controls slp ace ace mice carrying missense mutation thrile within domain slp showed increase inkt cells thymus lymph nodes decrease inkt cells spleens livers along reduced adap expression cytokine response comparable reduction inkt cells observed livers spleens adap deficient mice like adap inkt cells slp ace ace inkt cells characterized enhanced cdb expression correlating impaired induction tcr immediate early gene nur decreased adhesion icam furthermore cdb intrinsic effects inhibited cytokine release concanavalin mediated inflammation inkt cell accumulation liver unlike adap mice expression transcription factors plzf reduced whereas expression enhanced slp ace ace mice blockade decreased recovery inkt cells peripheral lymph nodes identifying inkt cell specific adhesion factor thus slp contributes regulation tissue distribution plzf cytokine expression inkt cells via adap dependent independent mechanisms
authors report preliminary findings potential contribution cypc isoenzyme human metabolism desmethylclobazam clb main active metabolite clobazam clb benzodiazepine frequently used add therapy patients refractory epilepsy two children clb treatment showing extremely high plasma concentration dose ratio clb metabolite parent drug ratio clb clb suggestive putative poor metabolizer phenotype tested cypci polymorphisms eleven epileptic patients stable clb therapy included reference values clb clb metabolic variables tested possible cypci polymorphisms detection cypc cypc cypc mutations performed genomic dna pcr amplification enzyme digestion procedures two presumed cypc patients clb clb ratio fold higher matched median values control epileptic patients according cypc genotyping one patient homozygous cypc second presented one copy mutation genotype also found three control patients observations provide indirect vivo evidence cypci isoenzyme involvement metabolism clb main metabolite according genotyping subjects carrying one two copies defective cypc allele might develop markedly elevated steady state plasma concentrations clb higher risk adverse effects
background human metabolism influenced dietary factors lifestyle environmental genetic factors thus men exclude animal products diet might different metabolic profiles meat eaters objective aimed investigate differences concentrations circulating metabolites including acylcarnitines amino acids biogenic amines glycerophospholipids hexose sphingolipids related lipid protein carbohydrate metabolism male meat eaters fish eaters vegetarians vegans oxford arm european prospective investigation cancer nutrition design cross sectional study concentrations metabolites measured mass spectrometry plasma men categorized according diet group differences mean metabolite concentrations across diet groups tested using anova false discovery rate controlling procedure used account multiple testing principal component analysis used investigate patterns metabolic profiles results concentrations metabolites differed significantly diet group vast majority cases vegans lowest concentration whereas meat eaters often highest concentrations acylcarnitines glycerophospholipids sphingolipids fish eaters vegetarians often highest concentrations amino acids biogenic amine clear separation patterns metabolic profiles diet groups seen vegans noticeably different groups lower concentrations glycerophospholipids sphingolipids conclusions metabolic profiles plasma could effectively differentiate men different habitual diet groups especially vegan men compared men consume animal products difference metabolic profiles mainly explained lower concentrations glycerophospholipids sphingolipids vegans
background computational support essential order reason dynamics biological systems developed software tool animo analysis networks interactive modeling provide computational support allow insight complex networks signaling events occurring living cells animo makes use timed automata underlying model thereby enabling analysis techniques computer science like model checking biology experts able use animo via user interface specifically tailored biological applications paper compare use animo established formalisms two case studies results animo powerful user friendly tool compete existing continuous discrete paradigms show presenting animo models two case studies drosophila melanogaster circadian clock signal transduction events downstream tnf alpha egf human colon carcinoma cells models originally developed odes fuzzy logic respectively conclusions two biological case studies modeled respectively ode fuzzy logic models conveniently modeled using animo animo models require less parameters odes precise fuzzy logic reason position modelling paradigm animo odes fuzzy logic
post transcriptional gene silencing ptgs defense mechanism targets invading nucleic acids endogenous transposons exogenous pathogens transgenes sources genetic screens based reactivation silenced transgenes long used identify cellular components regulators ptgs show first isolated ptgs deficient mutant sgs impaired transcription factor nac mutant exhibits striking similarities mutant impaired hkme demethylase jmj isolated genetic screen similarities include increased transgene promoter dna methylation reduced hkme hkme levels reduced polii occupancy reduced transgene mrna accumulation likely increased dna methylation cause reduced transcription effect jmj sgs transgene transcription suppressed drm mutation compromises novo dna methylation suggesting jmj nac module promotes transgene transcription preventing dna methylation remarkably sgs stronger effect jmj nac null alleles ptgs systems requiring sirna amplification due reduced sgs mrna levels sgs given sgs mutation changes conserved amino acid nac proteins involved homodimerization propose sgs corresponds neomorphic nac allele encoding mutant protein lacks wild type nac activity promotes sgs downregulation together results indicate impairment ptgs sgs due dual effect transgene transcription sgs transcription thus compromising sirna amplification
insulin insulin like signaling iis pathway crucial pathway caenorhabditis elegans associated mediating longevity stress resistance regulators protein signaling rgs also modulate stress resistance longevity multiple vitro vivo models however mechanism underlying rgs mediating stress resistance longevity remains largely unclear report rgs important member rgs family novel modulator iis pathway elegans found loss rgs dramatically promoted paraquat resistance elegans genetic analyses demonstrated rgs acted downstream daf upstream age pdk daf instead affecting iis associated genes transcriptional process loss rgs promoted daf nucleus translocation subset genes expression paraquat induced oxidative status way rgs mutant worms exhibited lower ros damage longer survival time wild type worms exposed paraquat paraquat exposure rgs mutant also promoted lifespan cadmium resistance relying daf rgs evolutionarily conserved findings open new insight rgs family role paraquat induced oxidative stress longevity elegans even mammals
predicting evolution phenotypic traits requires understanding natural selection despite indispensability fight parasites selection host immune defense remained understudied theory predicts immune traits stabilizing selection due associated trade offs fitness related traits empirical studies however report mainly positive directional selection discrepancy could caused low phenotypic variation examined individuals variation host resource level confounds trade offs empirical studies field experiment maintained lymnaea stagnalis snails individually cages lake investigated phenotypic selection two immune defense traits phenoloxidase like activity antibacterial activity hemolymph used diverse laboratory population manipulated snail resource level limiting food supply six weeks followed immune activity growth two fitness components survival fecundity snails found like activity growth stabilizing selection antibacterial activity positive directional selection selection immune traits mainly driven variation survival form selection immune defense apparently depends particular trait possibly due importance countering present parasite community
study investigated correlation chronological age telomere length peripheral blood leukocytes blood laboratory data female patients mild hypertension identify laboratory data reflect biological aging individuals cross sectional population based study outpatient clinic department cardiovascular respiratory geriatric medicine kyushu university hospital beppu japan outpatients mild hypertension treated low dose amlodipine laboratory data female patients collected telomere length parameters peripheral blood leukocytes determined southern blotting correlations laboratory data telomere length parameters assessed patients showed positive correlation telomere length high density lipoprotein albumin creatinine hemoglobin levels red blood cell counts negative correlation globulin level extent subtelomeric methylation long telomeres tended correlate negatively telomeric attrition creatinine level correlated subtelomeric methylation telomeric length hdl albumin globulin ratio potential indicators individual somatic genomic aging creatinine may therefore useful indicator predisposition telomeric attrition
aim study investigate prevalence fosfomycin resistance gene fosa characterize plasmids harboring fosa among ctx producing escherichia coli chickens china total ctx producing coli isolates collected chickens screened presence plasmid mediated fosfomycin resistance genes fosa fosa fosc clonal relatedness fosa positive isolates determined pulsed field gel electrophoresis pfge multilocus sequence typing mlst genetic environment fosa analyzed polymerase chain reaction pcr mapping plasmids studied using conjugation experiments pcr based replicon typing plasmid mlst sixty four fosa positive coli isolates identified study gene bla ctx predominant among strains followed bla ctx bla ctx various pfge patterns sequence types sts indicated isolates clonally unrelated seven different genetic environments fosa identified two new combinations isecp bla ctx isd fosa orf orf orf isecp bla ctx orf bla tem fosa orf orf orf discovered first time conjugation experiments successful isolates transconjugants harbored single plasmid plasmids carrying fosa belonged incompatibility group incfii inci inchi incb plasmids carrying bla ctx inchi plasmids carrying bla ctx plasmids carrying bla ctx found coli isolates different provinces results revealed considerable prevalence fosa gene among ctx producing coli clonal diversity chickens china transmission different kinds plasmids responsible dissemination fosa chicken farms china
working understand possible human health effects exposure heterocyclic amines formed meat cooking laboratory cooked beef pork chicken capable producing tens nanograms meiqx ifp phip per gram meat smaller amounts heteroyclic amines well done restaurant cooked beef pork chicken may contain phip ifp concentrations high tens nanograms per gram meiqx levels although well done chicken breast prepared laboratory may contain large amounts phip survey flame grilled meat samples cooked private homes showed phip levels beef steak chicken breast significantly different extremely high phip levels reported studies grilled chicken seen home cooked samples many studies suggest individuals may varying susceptibility carcinogens diet may influence metabolism thus affecting cancer susceptibility understand human metabolism phip examined urinary metabolites phip volunteers following single well done meat exposure using solid phase extraction quantified four major phip metabolites human urine addition investigating individual variation examined interaction phip potentially chemopreventive food preliminary study effect broccoli phip metabolism fed chicken six volunteers eating steamed broccoli daily days preliminary results suggest broccoli contains isothiocyanates shown induce phases metabolism vitro may affect rate metabolite excretion metabolic products dietary carcinogen newly developed methodology allow assess prevention strategies reduce possible risks associated phip exposure elsevier science rights reserved
type vii collagen major component anchoring fibrils epidermal basement membrane expression analyzed immunostaining northern blotting rarely protein level study quantitatively examined effects ascorbic acid various cytokines growth factors protein synthesis secretion type vii collagen human dermal fibroblasts culture using developed highly sensitive sandwich enzyme linked immunoassay two kinds specific monoclonal antibodies non collagenous domain ascorbic acid derivative induced twofold increase type vii collagen synthesis markedly increased secretion type vii collagen medium compared control culture effect influenced presence transforming growth factor beta tgf beta synthesis type vii collagen elevated tgf beta platelet derived growth factor tumor necrosis factor alpha interleukin beta tgf alpha thus data indicate synthesis secretion type vii collagen human dermal fibroblasts regulated ascorbate enhancement type vii collagen gene expression cytokines growth factors accompanied elevated production type vii collagen protein level
gene replacement via homologous recombination powerful tool genome editing recently direct achieved successfully coinjection mrnas engineered endonucleases zinc finger nucleases zfns donor dna developing embryos diverse organisms report procedures efficiency direct using zfns fish medaka upon zygotic coinjection mrnas encoding zfns target gonad specifically expressed gsdf locus linear dna vector pgrgsdf containing red fluorescent protein rfp gene flanked two homology arms similar underwent via homologous recombination specifically adults manipulated embryos contained allele caudal fin producing efficiency similar somatic progeny test revealed two nine fertile fish containing allele fin capable transmitting allele similar generation adulthood generating efficiency similar germline transmission sequencing southern blotting validated precise show allele expressed chimeric gsdf rfp rna gsdf cointegrated rfp specifically gonad demonstrating recapitulation endogenous rna expression predicted defined allele importantly rfp expression coincides faithfully gonad specific gsdf expression developing embryos adults results demonstrate first time feasibility efficiency zfn mediated precise directly developing embryo medaka lower vertebrate model
particle markov chain monte carlo pmcmc stochastic algorithm designed generate samples probability distribution density distribution admit closed form expression pmcmc commonly used sample bayesian posterior distribution state space models ssms class probabilistic models used numerous scientific applications nevertheless task prohibitive dealing complex ssms massive data due high computational cost pmcmc poor performance posterior exhibits multi modality paper aims address issues proposing novel pmcmc algorithm denoted ppmcmc uses multiple markov chains instead one used pmcmc improve sampling efficiency multi modal posteriors introducing custom parallel hardware architectures tailored pmcmc ppmcmc architectures implemented field programmable gate arrays fpgas type hardware accelerator massive parallelization capabilities new algorithm two fpga architectures evaluated using large scale case study genetics results indicate ppmcmc achieves higher sampling efficiency pmcmc using sequential cpu implementations fpga architecture pmcmc faster state art parallel cpu gpu implementations pmcmc energy efficient fpga architecture ppmcmc increases speedups respectively power efficient bringing previously intractable ssm based data analyses within reach authors published elsevier inc
optical methods manipulate detect nanoscale objects highly desired nanomaterials molecular biology fields optical tweezers used manipulate objects range size hundred nanometres several micrometres emergence near field methods overcome diffraction limit enabled manipulation objects highly free manipulation signal enhanced real time detection however remains challenge single sub nanoparticles biomolecules show approach uses photonic nanojet perform manipulation detection single sub objects photonic nanojet generated dielectric microlens bound optical fibre probe three dimensional manipulations achieved single fluorescent polystyrene nanoparticle well plasmid dna molecule backscattering fluorescent signals detected enhancement factors similar similar respectively demonstrated approach provides potentially powerful tool nanostructure assembly biosensing single biomolecule studies
lipase geobacillus strain modified variants lacking terminal signal peptide terminal amino acids successfully cloned expressed purified knowledge lipase precursor pre first geobacillus lipase possessing lipolytic activity degrees maximum activity degrees displays broad activity range lipase shown hydrolyze dodecanoate tricaprylin canola oil better analyzed substrates structural sequence alignments bacterial lipases lipase revealed terminus forms alpha helix conserved structure lipases pseudomonas clostridium staphylococcus bacteria work demonstrates terminal amino acids lipase significantly affect stability physicochemical properties enzyme never reported help create lipases specific properties industrial application lipase modified variants successfully applied biofuel production leather pulp industries production cosmetics perfumes lipases potential biocatalysts processes require extreme conditions low high temperature strongly acidic alkaline environment various organic solvents
type diabetes risk factor hepatocellular carcinoma hcc previously described haploinsufficiency nuclear receptor coactivator ncoa genetic defect linking glucose intolerance hcc report identification characterization single nucleotide variation ncoa causing amino acid thr ala substitution adjacent non tumorous liver tissues derived patients concurrent hcc using tet inducible expression cells show ectopic expression ncoawt suppressed proliferation hcc cells via induction arrest ectopic expression ncoata significantly lesser effect compared ectopic expression ncoawt furthermore ectopic expression ncoawt increased occurrence dna damage cell senescence whereas expression ncoata partly lost activity xenograft tumor model analysis demonstrated ectopic ncoawt expression reduced hcc tumor growth variation impairs tumor growth inhibitory function collectively data show variation impairs ability ncoa inhibit growth hcc suggesting variation may potential increase susceptibility hcc comorbid authors published elsevier ireland ltd
infected organisms resist tolerate infection tolerance infection defined minimizing per parasite reductions fitness although tolerance well studied plants researchers begun probe mechanisms transmission consequences tolerance animals suggest research tolerance animals would benefit explicitly incorporating behavior component tolerance given importance behavior host fitness parasite transmission propose two distinct manifestations tolerance animals tissue specific tolerance minimizes fitness losses due tissue damage infection behavioral tolerance minimizes fitness losses maintaining normal fitness enhancing behaviors infection briefly review one set potential immune mechanisms underlying responses vertebrate animals inflammation associated signaling molecules inflammatory responses including broadly effective resistance mechanisms like production reactive oxygen species incur severe costs terms damage host tissues thereby reducing tissue specific tolerance addition signaling molecules involved responses facilitate stereotypical behavioral changes infection include lethargy anorexia reducing normal behaviors behavioral tolerance consider tissue specific behavioral tolerance may vary independently conjunction outline potential consequences covariation transmission infectious diseases put forward distinction tissue specific behavioral tolerance definitive framework help stimulate broaden future research considering animal behavior intimately linked mechanisms consequences tolerance animals elsevier inc rights reserved
one primary goals applied proteomics development new computational methods modeling properties proteins primary structure work used concept semi supervised learning relatively new machine learning philosophy combines labeled unlabeled instances simultaneously perform classification protein mutants according physical properties unlike traditional methods demand specification class labels every sample particularly useful many exemplars available actual class membership available marginal subset spite desirable properties semi supervised learning seldom applied molecular biology recent years novel algorithm capable performing semi supervised learning proposed algorithm namely ttosom tree based neural network inspired well known self organizing maps paper use ttosom predict stability human lysozyme mutants since plays central role immunologic system prediction structural stability primary importance molecular biology experimental results show possible predict stability accuracy outperforming two well known classifiers prediction based historical data without necessity expensive chemical substances human resources
coding sequences cre site specific recombinase bacteriophage flp yeast plasmid site specific recombinase fused frame produce novel dual function site specific recombinase gene transgenic maize plants containing cre flp fusion expression vector crossed transgenic plants containing either ioxp frt excision substrate complete precise excisions chromosomal fragments flanked respective target sites observed progeny plants episomal dna recombination products frequently lost non recombined frt substrates found plants recovered generation cre flp gene segregated produced recombination products generation crossed back flp expressing plants observations may indicate efficiency site specific recombination affected plant developmental stage site specific recombination prevalent developing embryos cri fusion protein also tested excisions catalysed cre excisions identified plants verified plants polymerase chain reaction southern blotting components fusion protein flp cre functional acted similar efficiency crossing strategy proved suitable genetic engineering maize using flp cre site specific recombination system
vitamin ascorbic acid essential component collagen biosynthesis also proper functioning cardiovascular system humans unlike animals humans lack ability synthesize ascorbic acid due mutation gene encoding last enzyme ascorbate biosynthesis result vitamin must obtained dietary sources like plants study developed transgenic potato plants solanum tuberosum taedong valley expressing strawberry galur gene control camv promoter increased ascorbic acid levels integration galur gene plant genome confirmed pcr southern blotting ascorbic acid asa levels transgenic tubers determined high performance liquid chromatography hplc expression galur resulted fold increase ill asa transgenic potato levels asa positively correlated increased galur activity transgenic lines enhanced vitamin content showed enhanced tolerance abiotic stresses induced methyl viologen nacl mannitol compared untransformed control plants leaf disc senescence assay showed better tolerance transgenic lines retaining higher chlorophyll compared untransformed control plants present study demonstrated expression galur gene enhanced level asa potato tubers transgenics performed better different abiotic stresses compared untransformed control elsevier ireland ltd rights reserved
full length amphioxus cdna encoding novel phosducin like protein amphi phlp identified first time gut cdna library branchiostoma belcheri comprised open reading frame orf amino acids predicted molecular mass approximately kda situ hybridization histochemistry revealed tissue specific expression pattern amphi phlp high levels ovary lower level hind gut testis hepatic caecum gill endostyle epipharyngeal groove absent muscle neural tube notochord chinese hamster ovary cho cells transfected expression plasmid pegfp amphi phlp fusion protein targeted cytoplasm cho cells suggesting amphi phlp cytosolic protein work may provide framework understanding physiological function amphi phlp belcheri
mammals isoforms fatty acid binding protein fabp expressed various tissues understand role multiple fabp isoforms quantitatively examined transcript levels individual fabp isoforms various tissues northern blotting using synthesized rnas corresponding mrna isoform external standards result absolute transcript levels individual fabp isoforms expressed tissue successfully determined fabp isoforms classified three categories isoforms fabp markedly expressed tissue examined isoforms showing certain transcript levels multiple tissues isoforms fabp expressed certain levels one particular tissue based expression profiles isoforms individual tissues also classified three groups tissues high level expression fabp isoforms observed tissues multiple fabp isoforms expressed certain levels tissues single fabp isoform dominantly expressed certain level results give better understanding meaning presence multiple fabp isoforms mammals
outbred mating typical human reproduction embryo feto placental unit express paternal antigens mother immune system react however embryo feto placental unit engineer maternal immune defense system towards helpful rather harmful reactions indeed begins prospective mother exposure paternal seminal plasma review pregnancy complications implantation failure infertility recurrent spontaneous abortion pre eclampsia intrauterine growth restriction premature labor examined determine degree similarity events women events lab mouse models artificially induced model endometriosis contributes infertility also compared occurs women one may conclude female mouse provides good analog human female nevertheless always important validate mouse data human studies discussion focuses intrauterine interface embryonic placental tissues maternal uterine tissues dialogue referred cross talk issues relating bidirectional transplacental traffic immune system cells discussed little relevant data
major focus ecology understanding trophic relationships energy flows natural systems associated food web dynamics changes food webs due introduced species predator prey interactions often assessed examining stomach contents however partially digested remains may difficult accurately identify traditional visual analysis evaluate effectiveness dna barcoding identify digested piscine prey remains invasive blue catfish ictalurus furcatus non native established channel catfish ictalurus punctatus native white catfish ameiurus catus chesapeake bay usa stomach contents examined piscine prey items scored lightly digested moderately digested severely digested base pair region cytochrome oxidase subunit coi mitochondrial dna gene sequenced prey item edited barcode sequences compared locally caught validated reference sequences bold barcode life database large majority prey items sufficiently digested limit morphological identification species additional family however overall barcoding success high little difference among digestion classifications combining morphological genetic identifications classified fish prey items species twenty three fish species identified including species undergoing active restoration efforts alosa spp commercially important species striped bass morone saxatilis white perch morone americana american eel anguilla rostrata menhaden brevoortia tyrannus found dna barcoding highly successful identifying heavily degraded prey items efficient effective method obtaining diet information strengthen resolution trophic analyses including diet comparisons among sympatric native non native predators
aims study focused cloning expression characterization recombinant alpha arabinosidases bifidobacterium longum methods results alpha arabinofuranosidase afub bifunctional alpha arabinopyranosidase beta galactosidase apy longum identified southern blotting recombinant enzymes overexpressed escherichia coli recombinant afub rafub purified single step affinity column chromatography whereas recombinant apy rapy purified serial affinity column chromatography enzymatic properties substrate specificities two enzymes assessed kinetic constants calculated according results rafub hydrolysed nitrophenyl alpha arabinofuranoside pnp alpha ginsenoside hydrolyse nitrophenyl alpha arabinopyranoside pnp alpha hand rapy hydrolysed pnp alpha nitrophenyl beta galactopyranoside pnp beta ginsenoside conclusions ginsenoside metabolizing bifidobacterial rafub rapy successfully cloned expressed characterized rafub specifically recognized alpha arabinofuranoside whereas rapy dual functions could hydrolyse beta galactopyranoside alpha arabinopyranoside significance impact study findings suggest biochemical properties substrate specificities recombinant enzymes differ previously identified alpha arabinosidases bifidobacterium breve clostridium cellulovorans
science beginning understand genetic variation epigenetic events alter requirements responses nutrients nutrigenomics time methods profiling almost products metabolism single sample blood urine developed metabolomics relations diet nutrigenomic metabolomic profiles profiles health become important components research could change clinical practice nutrition nutrition studies assume persons average dietary requirements studies often plan large subset subjects differ requirements nutrient large variances responses occur population exists result statistical analyses argue null effect nutrition studies could better identify responders differentiate nonresponders basis nutrigenomic metabolomic profiles sensitivity detect differences groups could greatly increased resulting dietary recommendations could appropriately targeted certain nutrition clinical specialty primarily responsible nutrigenomics metabolomics disciplines currently dominate development portions fields however nutrition scientists depth understanding human metabolism used establish role research clinical programs arise nutrigenomic metabolomic profiling investments made today training programs research methods could ensure new foundation clinical nutrition future
dna replication initiates origins replication following strict sequential activation programme conserved temporal order activation number replication initiation sites varies species according complexity genomes average spacing contrast yeast genomes location definition origins mammalian genomes elusive historically mammalian replication initiation sites mapped situ systematically searching specific genomic loci sites preferentially initiated dna replication potential origins start site mapping autonomously replicating sequence experiments potential orc pre replicative complex pre sites chromatin immunoprecipitation chip using antibodies pre proteins past decade chip become important method analyzing protein dna interactions classically chip combined southern blotting pcr recently whole genome chip methods successful unicellular eukaryotes understand molecular mechanisms coordinating replication initiation flexibility response environmental changes however mammalian systems chip pre antibodies often challenging genome wide studies scarce review appraise progress made understanding replication origin organization using immunoprecipitation orc mcm complexes special focus advantages disadvantages genome wide chip technologies potential impact understanding metazoan replicators
analysis protein protein interactions protein conformations cross linking coupled mass spectrometry cxms become essential tool recent years variety cross linking reagents used covalently link interacting amino acids identify protein binding partners spatial proximity cross linked amino add residues used elucidate structural models protein complexes main challenges mapping protein protein interaction low stoichiometry low frequency cross linked peptides relative unmodified linear peptides well accurate efficient matches corresponding peptide sequences low false discovery rates identifying site cross link evaluate current state chemical cross linking mass spectrometry applications special emphasis recent development informatics data processing analysis tools help complexity interpreting cxms data article part special issue entitled physiological enzymology protein functions elsevier rights reserved
background mast cells critical component allergic responses humans animal models allow vivo investigation contribution allergy evaluation new human specific therapeutics urgently needed objective develop new humanized mouse model supports human mast cell engraftment human ige dependent allergic responses methods model based nod scid ilrg null scf csf nsg sgm strain mice engrafted human thymus liver hematopoietic stem cells termed bone marrow liver thymus blt results large numbers human mast cells develop nsg sgm blt mice populate immune system peritoneal cavity peripheral tissues human mast cells nsg sgm blt mice phenotypically similar primary human mast cells express tryptase epsilon mast cells undergo degranulation ige dependent independent manner readily cultured vitro additional studies intradermal priming engrafted nsg sgm mice chimeric ige containing human constant regions resulted development robust passive cutaneous anaphylaxis response moreover describe first report human mast cell antigen dependent passive systemic anaphylaxis response primed mice conclusions nsg sgm blt mice provide readily available source human mast cells investigation mast cell biology preclinical model passive cutaneous anaphylaxis passive systemic anaphylaxis used investigate pathogenesis human allergic responses test new therapeutics advancement clinic
background severe uncontrolled asthma sua associated increased asthma exacerbations whether high blood eosinophil counts related burden uncertain objectives determine relationship blood eosinophil counts asthma exacerbations utilization cost patients sua methods patients persistent asthma age years identified administratively sua phase evidencing asthma exacerbations medium high dose dispensed canisters inhaled corticosteroid ics monotherapy long acting beta agonist dispensed non ics controllers patients sua invited participate prospective phase follow study blood tests index date determine eosinophil count atopic biomarkers relationship blood eosinophil cutoff points asthma exacerbations direct costs year index date determined multivariable regression results blood eosinophil cutoff point greater equal cells compared less cells cells cells risk factor outcome year adjusted analyses asthma exacerbations risk ratio asthma emergency department visit hospitalization risk ratio rate asthma exacerbations incremental total direct asthma costs per patient conclusions high blood eosinophil count independent risk factor asthma exacerbations asthma emergency department visit hospitalization direct costs patients sua possibly constrained limited power american academy allergy asthma immunology
objectives palytoxin ptx marine toxin isolated cnidaria zooanthid palythoa caribaeorum one potent non protein substances known complex molecule presents lipophilic hydrophilic areas effect ptx investigated series experiments conducted head neck squamous cell carcinoma hnscc cell lines xenografts materials methods cell viability gene expression sodium potassium transporting atpase subumit alpha atpal gapdh analyzed hnscc cells normal epithelial cells treatment ptx using cytotoxicity clonogenic enzyme inhibitor assays well pcr northern blotting xenograft experiments severe combined immunodeficient scid mice used analyze tumor regression data statistically analyzed using one way annova spss results significant toxic effects observed tumor cells treated ptx contrast normal cells tumor cells ptx affected release ldh expression sodium potassium transporting atpase subunit alpha gene suggesting loss cellular integrity primarily plasma membrane furthermore strong repression jun terminal kinase jnk mrna expression found carcinoma cells correlated enhanced toxicity ptx suggesting essential role mitogen activated protein kinase mapk jnk signalling cascades pathway mechanisms hnscc cell resistance ptx mice inoculated carcinoma cells injections ptx xenografted tumors resulted within days extensive tumor destruction treated animals tumor regression occurred control animals conclusions results clearly provide evidence ptx possesses preferential toxicity head neck carcinoma cells therefore worth studying impact may extend knowledge biology head neck cancer
non coding micrornas mirnas regulate translation target messenger rnas mrnas involved growth development variety cells including primordial germ cells pgcs play essential role germ cell development however target mrnas regulatory networks influenced mirnas pgcs remain unclear demonstrate novel mirnas control pgc development targeting mrnas involved various cellular pathways reveal pgc enriched expression patterns nine mirnas including mir using mirna expression analysis along mrna microarray analysis pgcs embryonic gonads postnatal testes mirnas highly expressed pgcs demonstrated northern blotting mirna situ hybridization assay mirna qpcr analysis integrative study utilizing mrna microarray analysis mirna target prediction demonstrates regulatory networks mirnas regulate potential target genes pgc development elucidated networks mirnas disclose coordinated molecular mechanism mirnas regulate distinct cellular pathways pgcs determine germ cell development
species range limits often fluctuate space time response variation environmental factors gradual niche evolution due changes adaptive traits used genome wide data investigate evolutionary divergence species range limits generalist highly dispersive fish species shows unusually wide distribution across arid semi arid regions australia generated ddrad data filtered snps million sequences samples localities spanning native range golden perch macquaria ambigua teleostei percichthyidae analytical framework uses population genomics assess connectivity population structure using model based model free approaches phylogenetics clarify evolutionary relationships coalescent based bayesian species delimitation method assess statistical support inferred species boundaries addressing uncertainties regarding range limits taxonomy particularly relevant iconic australian species intensive stocking activities undertaken support recreational fishery predicted range shifts associated ongoing climate change strong population genomic phylogenetic coalescent species delimitation support obtained three separately evolving metapopulation lineages lineage considered distinct cryptic species golden perch range limits match climate determined boundaries main river basins despite ability golden perch cross drainage divides also identified cases suggestive anthropogenic hybridization lineages due stocking recreationally important fish well potential hybrid zone temporally stable pattern admixture work informs consequences aridification evolution aquatic organisms topic poorly represented literature also shows genome scale data substantially improve rectify inferences taxonomy hybridization conservation management previously proposed detailed genetic studies elsevier inc rights reserved
major histocompatibility class receptors expressed surface specialized antigen presenting cells vertebrate immune systems function present peptides derived exogenous pathogens cells variation level expression genes linked pathogenesis various diseases little published function class receptors teleost fish date study produced polyclonal antibodies recognizing class alpha beta proteins rainbow trout employed characterize expression pattern genes deglycosylation using glycosidase endoglycosidase showed class alpha glycosylated rainbow trout class beta also found glycosylated reported previously results northern blotting revealed expression genes affected exposure rainbow trout temperature degrees however degrees downregulation class alpha beta genes evident mrna protein levels assessed northern western blotting respectively class antigens play important role generating immune response bacterial fungal pathogens downregulation genes low temperature could account susceptibility fish low temperature related diseases bacterial cold water disease winter saprolegniosis
adna studies cooperative field research broad range applications including evolutionary biology genetics anthropology archaeology scientists using ancient molecules source material historical questions colleagues humanities observing interest concern adna research affecting academic identities concepts history historiography adna research developed way described hype cycle chackie fenn technological triggers sanger sequencing polymerase chain reaction kicked multitude experiments ancient dna geneticists microbiologists anthropologists many euphorically joined molecule hunt adna promoted time machine media attention enormous experiments implementations began fail contamination discovered tremendous problem media interest waned many labs lost interest turned disillusionment systematic research methodology painstakingly established lab routines authenticity problem first addressed control oriented measures later approached cognitive theoretical perspective pitfalls limits adna became clearer end field reached current plateau productivity cross disciplinary debates conflicts collaborations increasing critical reflection among participants historians consider joining field kind critical friendship make possibilities give input constructivist perspective
potential benefits generating using transgenic cattle range improvements agriculture production large quantities pharmaceutically relevant proteins previous studies attempted produce transgenic cattle livestock pronuclear injection somatic cell nuclear transfer approaches largely ineffective however third approach lentivirus mediated transgenesis successfully produced transgenic livestock study generated transgenic korean native cattle using perivitelline space injection viral vectors expressed enhanced green fluorescent protein egfp systemically two different types lentiviral vectors derived feline immunodeficiency virus fiv human immunodeficiency virus hiv carrying egfp injected perivitelline space mii oocytes egfp expression cell stage significantly higher fiv group compared hiv group eight cell embryos expressed egfp cultured blastocysts transferred heifers ten heifers successfully impregnated delivered healthy calves calves expressed egfp detected vivo imaging pcr southern blotting addition established egfp expressing cell line calves followed nuclear transfer recloned cell embryos also expressed egfp differences rates fusion cleavage development cells derived non calves subsequently used results illustrate fiv based lentiviruses useful production cattle moreover established egfp cell line used additional studies involve induced pluripotent stem cells
fairly recently recognized human ribosomopathiesdevelopmental defects caused mutations ribosome biogenesis proteinscan exhibit tissue specific defects rather expected global defects apparent anomalythat seemingly ubiquitously expressed required ribosomal proteins distinct functions cell tissue differentiationhas spurred new areas research focused better understanding translational mechanisms biogenesis function diverse cell types renewed appreciation need better understand roles ribosomal proteins human development disease identified surprising similarities differences variety human ribosomopathies discuss ribosomal protein functions health disease focusing ribosome biogenesis protein utp wdr new exciting research field anticipated provide insight variety previously understudied craniofacial dysostoses result significantly improved knowledge understanding roles translational machinery human craniofacial development disease
mast cells mcs long lived resident cells known substantial role antigen induced anaphylaxis immunoglobulin mediated allergic reactions well tumor promotion mcs activation results release pro inflammatory factors histamine tryptase tumor necrosis factor carboxypeptidase stored secretory granules ige dependent hypersensitivity thought major pathway mediating degranulation mast cells nucleotide receptor activated udp glucose udpg may also enhance process study identified thymidine monophosphorothioate tmps molecule inhibiting udpg induced degranulation rat mast cell line rbl additionally tmps diminished udpg evoked intracellular calcium mobilization stable hekt cell line overexpressing receptor therefore demonstrate use thymidine monophosphorothioate might novel anti inflammatory approach based preventing mast cell activation
leading intellectual challenge evolutionary genetics identify specific phenotypes drive adaptation enzymes offer particularly promising opportunity pursue question many enzymes contributions organismal fitness depend comparatively small number experimentally accessible properties moreover first principles demands enzyme thermostability stand opposition demands catalytic activity observation coupled fact enzymes marginally thermostable motivates widely held hypothesis mutations conferring functional improvement require compensatory mutations restore thermostability explicitly test hypothesis first time using four missense mutations tem beta lactamase jointly increase cefotaxime minimum inhibitory concentration mic similar fold first report enzymatic efficiency cat thermostability thence delta folding combinations mutations next fit quantitative model predicts mic function cat delta cat explains similar variance cefotaxime mic similar log transformation delta improve explanatory power model also find cefotaxime mic rises slowly cat predicted several explanations discrepancies suggested finally demonstrate substantial sign epistasis mic cat antagonistic pleiotropy phenotypes spite near numerical additivity system thus constraints selectively accessible trajectories well limitations ability explain constraints terms underlying mechanisms observed comparatively well behaved system
demonstrate proapoptotic chemical agent oxidopamine induces dose dependent changes chromatin textural patterns quantified using gray level occurrence matrix glcm method peripheral blood heparin pretreated samples treated oxidopamine ohda hydroxydopamine achieve effective concentrations samples smeared microscope slides fixated methanol smears stained using modification feulgen method dna visualization stained smear sample lymphocyte chromatin structures visualized analyzed way textural parameters total nuclei micrographs calculated chromatin structure five different glcm features calculated angular second moment glcm entropy inverse difference moment glcm correlation glcm variance oxidopamine induced rise values glcm entropy variance reduction angular second moment correlation inverse difference moment trends glcm parameter changes found highly significant results indicate glcm mathematical algorithm might successfully used detection evaluation discrete early apoptotic structural changes feulgen stained chromatin peripheral blood lymphocytes detectable using conventional microscopy cell biology techniques elsevier ltd rights reserved
genome wide association studies gwas generalization replication genotype phenotype association population different ancestry population first identified current practices declaring generalizations rely testing associations controlling family wise error rate fwer discovery study separately controlling error measures follow study approach guarantee control fwer false discovery rate fdr generalization null hypotheses also fails leverage two stage design increase power detecting generalized associations provide formal statistical framework quantifying evidence generalization accounts consistency directions associations discovery follow studies develop directional generalization fwer fwerg fdr fdrg controlling values used declare associations generalized framework extends generalization testing applied published list single nucleotide polymorphism snp trait associations methods control fwerg fdrg various snp selection rules based values discovery study find often beneficial use lenient value threshold genome wide significance threshold gwas total cholesterol hispanic community health study study latinos hchs sol testing snps values genomic regions generalization large gwas whites generalized snps regions testing snps values regions generalized snps regions
human flap endonuclease hfen catalyzes essential removal single stranded flaps arising dna junctions replication repair processes hfen biological function must precisely controlled consequently protein relies combination protein substrate conformational changes prerequisite reaction include substrate bending duplex duplex junction transfer unpaired reacting duplex end active site present flaps thought thread helical cap limiting reaction flaps free termini vivo monitored dna bending fret dna unpairing using aminopurine exciton pair determine dna protein requirements substrate conformational changes binding dna hfen bent conformation occurred independently flap accommodation require active site metal ions presence conserved active site residues stringent requirements exist transfer substrate active site placement scissile phosphate diester active site required presence divalent metal ions free flap present watson crick base pair terminus reacting duplex intact secondary structure enzyme helical cap optimal positioning scissile phosphate additionally required active site conserved residues tyr asp arg reacting duplex phosphate studies suggest fen reaction mechanism junctions bound flaps threaded present finally substrate transferred onto active site metals initiating cleavage
environmental impact major oil spills marine microorganisms yet thoroughly investigated using molecular biology techniques deepwater horizon dwh drilling rig explosion affected approximately surface area gulf mexico gom estimated million gallons oil macondo prospect spilled environment pelagic sargassum complex two surface drifting species sargassum natans sargassum fluitans marine brown macroalgae critically important habitat gom ecosystem suffused macondo prospect oil released dwh event using rrna pcr roche pyrosequencing effect oil bacterial population associated pelagic sargassum contiguous waters examined comparing sequence data generated samples collected oiled non oiled locations northern gom sequence data showed similar microbial composition sargassum regardless exposure oil primarily dominated five phyla proteobacteria bacteroidetes actinobacteria verrucomicrobia unclassified bacteria microbial composition water samples significantly less diverse sargassum consisted primarily proteobacteria firmicutes bacteroidetes due evenly distributed abundance microbial species oiled non oiled pelagic sargassum study findings indicate dwh spilled oil minimal effect composition diversity microbial community associated sargassum contiguous waters however higher abundances sulfitobacter one species psychrobacter found oiled water samples compared non oiled water samples indicating effect dhw oil microbial composition seawater though number marine studies using molecular biology approaches first molecular examination impact dwh oil spill bacterial communities associated pelagic sargassum contiguous waters gom
background double blind placebo controlled food challenge dbpcfc considered definitive diagnostic test food allergy nevertheless validated recipes masking foods scarce standardized differ centers sensory evaluation techniques triangle test necessary validate recipes used dbpcfc methods developed recipes use dbpcfc milk egg white hazelnut used triangle test validate phase study volunteers participated phase participants tried samples active placebo placebo active identify odd one phase samples given simultaneously whereas phase samples foods failed validation phase given sequentially visual analog scale vas ranging used evaluate much participants liked recipes results phase egg white recipe validated volunteers found odd sample milk hazelnut recipes validated phase foods participants found odd sample median vas scores recipes ranged conclusions used sensory testing validate milk egg white hazelnut recipes use dbpcfc validated recipes easy prepare clinical setting provide equivalent serving dose liked participants
dioscorea zingiberensis main plant source diosgenin precursor production steroid hormones used pharmaceutical industry extraction process diosgenin zingiberensis generate high acid high strength wastewater large scale threaten environment bioengineering microorganisms produce diosgenin effective way avoid pollution however little known genes involved biosynthesis diosgenin obtained unigenes average length bases zingiberensis transcriptome rna seq large number unigenes annotated unigenes assigned secondary metabolite pathways database unigenes encoding key enzymes found present diosgenin biosynthesis pathways addition found unigenes encoding cyp proteins unigenes encoding ugt proteins may involved modifications downstream pathway expression patterns key diosgenin biosynthesis genes studied identify important members enzyme family results add available genetic data zingiberensis lay foundation production diosgenin using genetic engineering
abscisic acid aba inhibits seed germination regulation aba biosynthesis role maintenance seed dormancy key rate limiting step aba biosynthesis catalyzed cis epoxycarotenoid dioxygenase nced two hydroxamic acid inhibitors carotenoid cleavage dioxygenase ccd previously found inhibit ccd nced vitro shown novel property decreasing mean germination time tomato solanum lycopersicum seeds constitutively overexpressing lenced post germination exhibited negative effects tomato seedling growth terms height dry weight fresh weight tobacco nicotiana tabacum seeds containing tetracycline inducible lenced transgene used show germination could negatively positively controlled chemical induction gene expression chemical inhibition nced protein application tetracycline increased mean germination time delayed hypocotyl emergence similar manner observed exogenous aba applied reversed nced expression induced intermediate levels also improved germination lettuce lactuca sativa seeds thermoinhibitory temperatures tomato seeds imbibed high osmolarity solutions polyethylene glycol reduced aba dihydrophaseic acid accumulation tomato seeds overexpressing lenced reduced aba accumulation wild type tomato seeds imbibed polyethylene glycol evidence supports mode action nced inhibition molecule provides lead compound design nced inhibitors greater specificity potency
evolutionary biology undergirded extensive impressive set mathematical models yet one result fisher theorem selection fitness generally accorded status fundamental theorem argue although fundamental status justified simplicity scope additional results seem similarly fundamental suggest fundamental theorem evolution price equation simplicity broad scope used derive four familiar results similarly fundamental fisher average excess equation robertson secondary theorem natural selection breeder equation fisher fundamental theorem derivations clarify relationships behind results assumptions slightly less fundamental results include multivariate evolution social selection key feature fundamental theorems great simplicity scope often achieved sacrificing perfect accuracy quantitative genetics productive fundamental theorems population genetics probably empirical focus unknown genotypes freed tyranny detail allowed focus general issues
twenty chickpea accessions belonging ten different countries world subjected phylogeny length variations nuclear ribosomal dna dna regions cicer accessions used amplification two sets comprising reverse forward primers lengths arietinum reticulatum ranged whereas accessions investigated content ranged sequencing polymerase chain reaction product showed variability due adenine guanine nucleotide base pairs blast search region revealed highest homology four strains arietinum accessions whereas showed homology arietinum homology echinospermum
new contributions aim accelerate development improve efficacy safety vaccines arise many different areas research technology one areas computational science traditionally participates initial steps pre screening active substances potential become vaccine antigen work present another promising way use computational science vaccinology mathematical computational models important cell protein dynamics immune system system ordinary differential equations represents different immune system populations cells cells antigen presenting cells antibodies way possible simulate silico immune response vaccines development study distinct scenarios simulated varying parameters mathematical model proof concept developed model immune response vaccination yellow fever simulations shown consistent results compared experimental data available literature model generic enough represent action diseases vaccines human immune system dengue zika virus
proteins targeted degradation mycobacterial proteasome covalently modified prokaryotic ubiquitin like protein pup process termed pupylation despite name pup ubiquitin like function sequence structure furthermore enzymology pupylation appears distinct protein modification ubiquitin ubiquitin like proteins ubls nonetheless adapted methods established field production reagents isolate identify analyze pupylated proteins mycobacteria methods modified study specific pupylated proteins various pup bearing bacteria identify posttranslational modifiers prokaryotes
background emergence insecticide resistance malaria vectors real threat future goals elimination control malaria therefore objective study assess research trend insecticide resistance anopheles mosquito specific number publications countries institutions authors research profile citation analysis international collaborations impact journals publishing documents insecticide resistance presented conducted via scopus search engine used retrieve relevant data keywords used based literature available topic duration study set results total documents mainly original research articles retrieved average number citations per article poisson log linear regression analysis indicated increase number publications extra article pyrethroid resistance total different countries authors participated publishing retrieved articles united kingdom ranked first number publications followed united states america usa france top ten productive countries included seven african countries collaborations mostly benin relative link strength total institution organizations participated publication retrieved articles active institution organization liverpool school tropical medicine retrieved articles published different scientific peer reviewed journals journal published topic malaria journal four top active authors south africa two three top ten cited articles published insect molecular biology journal six articles pyrethroid resistance least two ddt resistance conclusion publications insecticide resistance malaria vector gained momentum past decade international collaborations enhanced knowledge situation vector resistance countries endemic malaria molecular biology insecticide resistance key issue understanding overcoming emerging problems
growing leaves expand constant rate exhibit pronounced diel growth rhythms however mechanisms giving rise distinct diel growth dynamics different species still largely unknown first step towards identifying genes controlling rate timing leaf growth analysed transcriptomes rapidly expanding fully expanded leaves populus deltoides bartr marsh points high low expansion night tissues well defined temporal growth rates harvested using online growth monitoring system based digital image sequence processing method developed quantitative mapping dicot leaf growth unlike plants studied previously leaf growth deltoides characterised lack base tip gradient across lamina maximal minimal growth dusk dawn respectively microarray analysis revealed nocturnal decline growth coincided concerted regulation ribosomal protein genes indicating deceleration cytoplasmic growth subsequent time course experiment northern blotting real time pcr confirmed ribosomal protein gene rpl cell cycle gene regulated midnight following decrease cellular carbohydrate concentrations thus propose spatio temporal growth pattern leaves deltoides primarily arises cytoplasmic growth whose activity increases afternoon midnight thereafter decreases species
cytokines chemokines play crucial role regulating immune system understanding molecules regulated important understand general immunology particularly role clinical applications development evaluation novel drug therapies cytokines today widely used therapeutic targets biomarkers monitor effects drug therapies prog nosis diagnosis diseases therapies target specific cytokine also likely affect pro duction cytokines due cross regulatory functions cytokines produced common cell types study perturbated production different cyto kines preclinical rat model autoimmune arthritis using commercially available immunomodula tory drugs clinical candidates majority studied drugs selected anti inflammatory role confirmed inhibit production ifn gamma model also found increase production cytokines compared untreated control correlation analysis identified significant pairwise correlations cytokines strongest correlations found study ifn gamma epo cluster analysis identified two robust clusters epo ifn gamma results show cytokines highly regulated provide valuable information therapeutic drug might affect clusters cytokines addition cytokine used ther apeutic biomarker could combined related cytokines biomarker panel improve diag nostic accuracy elsevier ltd rights reserved
three dimensional culture models physiologically relevant provide reproducible results experimental flexibility adapted high throughput experiments moreover models bridge gap traditional two dimensional monolayer cultures animal models culture systems significantly advanced basic cell science tissue engineering especially fields cell biology physiology stem cell research regenerative medicine cancer research drug discovery gene protein expression studies addition models provide unique insight bacteriology virology parasitology host pathogen interactions review summarizes analyzes recent progress human virological research cell culture models discuss viral growth replication proliferation infection virus host interactions antiviral drugs culture models
since mid membrane modules became available plasma separation techniques gained importance especially past years advantages method complete separation corpuscular components plasma due increased blood flow rate higher efficacy systemic autoimmune diseases based immune pathogenesis produce autoantibodies circulating immune complexes cause inflammation tissues various organs cases diseases poor prognosis without treatment therapeutic apheresis combination immunosuppressive therapies led steady increase survival rates last years updated information immunology molecular biology different immunologic diseases discussed relation rationale apheresis therapy place combination modern treatments different diseases treated various apheresis methods therapeutic plasma exchange tpe substitution solution online plasma blood purification using adsorption columns contain biological non biological agents authors provide overview important pathogenic aspects indicating supportive therapy systemic autoimmune diseases renal neurological disorders immunological diseases treated guidelines german working group clinical nephrology apheresis committee american society apheresis cited
objectives characterization bacteroides strains regard cfxa gene mtn mobilizable transposon role penicillin binding proteins pbps heterogeneous cefoxitin resistance methods eighty four randomly selected heterogeneously highly cefoxitin resistant bacteroides isolates included agar dilution etest methods used determination cefoxitin mics pcr experiments nucleotide sequencing used detect cfxa gene molecular features mtn cefoxitin binding experiments determine affinity pbps cefoxitinase assays also applied southern blotting used determine copy number cfxa genes results sixteen strains random collection proved positive cfxa mic distribution cfxa negative positive strains display clear separation majority cfxa positive strains collection harboured common region end mtn region encoded open reading frame exhibited homology abortive phage infection proteins abid cfxa genes transferable low frequencies conjugation experiments pbp affinity studies pbp pbp species largely insensitive cefoxitin whereas pbp species affected low concentrations seven heterogeneously resistant strains positive cfxa mutations regulatory regions cfxa conclusions major minor roles bacteroides fragilis pbps cfxa cefoxitinase respectively inferred role newly recognized abid may control copy number cfxa
one level obesity clearly problem simple physics result eating much expending enough energy complex question however people eat others studies human mouse genetics past two decades uncovered number pathways within brain play key role control food intake prime example leptin melanocortin pathway know greatly contributes mammalian appetitive behaviour however genetic disruption pathway remains rare represent major burden disease carried common obesity recent years genome wide association studies revealed different candidate genes linked bmi including many components melanocortin pathway acting central nervous system influencing food intake severe disruption melanocortin pathway results severe obesity subtle variations genes influence might sit normal distribution bmi enter post genomics world new information influence treatment management obese patients
kinesthetic classroom activity designed help students understand enzyme activity catalysis reaction rate students served role enzymes manipulating pop beads catalytic event activity illuminates relationship reaction rate reaction progress allowing students experience first hand effect substrate depletion catalyzed reaction rate preliminary findings based survey results exam performance suggest activity could prove beneficial students targeted learning outcomes unique previous kinesthetic approaches model michaelis menten kinetics activity models effects substrate depletion catalyzed reaction rate therefore could prove beneficial conveying reasoning behind initial rate simplification used michaelis menten kinetics international union biochemistry molecular biology
sugarcane grassy shoot scgs disease associated presence srxi group phytoplasmas transmitted leafhoppers limited studies performed india toward natural transmission determine insect vectors transmit disease nature leafhopper species scgs infected fields shahjahanpur central uttar pradesh india collected analyzed phytoplasma presence using nested polymerase chain reaction phytoplasma specific primers similar amplified dna fragment detected nested pcr three major leafhopper species viz maiestas portica melichar exitianus indicus ross cofana unimaculata signoret symptomatic sugarcane leaves variety cos blastn analysis similar rdna partial sequences obtained symptomatic sugarcane plants leafhoppers revealed sequence identities among identity reported strains candidatus phytoplasma oryzae srxi group phylogenetic analysis rrna sequences scgs portica unimaculata indicus phytoplasma strains also indicated closest phylogenetic relationship oryzae group transmission tests population sampling study confirmed portica unimaculata vectors scgs phytoplasma diseased healthy sugarcane plants identification new vectors scgs phytoplasma suggested leafhopper species may responsible secondary spread scgs phytoplasma
recent technological developments high dimensional flow cytometry mass cytometry cytof made possible detect expression levels dozens protein markers thousands cells per second allowing cell populations characterized unprecedented detail traditional data analysis manual gating inefficient unreliable high dimensional settings led development large number automated analysis methods methods designed unsupervised analysis use specialized clustering algorithms detect define cell populations downstream analysis performed date extensible performance comparison clustering methods high dimensional flow mass cytometry data evaluated methods using several publicly available data sets experiments immunology containing major rare cell populations cell population identities expert manual gating reference standard several methods performed well including flowsom shift phenograph rclusterpp flowmeans among flowsom extremely fast runtimes making method well suited interactive exploratory analysis large high dimensional data sets standard laptop desktop computer results extend previously published comparisons focusing high dimensional data including new methods developed cytof data scripts reproduce analyses available github https github com lmweber cytometry clustering comparison pre processed data files available flow repository fcm zzph allowing comparisons extended include new clustering methods reference data sets authors cytometry part published wiley periodicals inc behalf isac
alopecia areata common stressful disorder results hair loss resistant treatment cases experimental clinical evidence suggests caused autoimmune attack hair follicles precise pathomechanism however remains unknown focus recent progress multidisciplinary approaches epidemiology pathogenesis new treatments publications january july provide overview current understanding clinical management research directions japanese society investigative dermatology published elsevier ireland ltd rights reserved
previously shown combination metabolic modifiers deoxy glucose aminonicotinamide results oxidative stress mediated radiosensitization malignant cells via mitochondrial dysfunction non coordinated expression antioxidant defense besides inhibition repair recovery present study objective study panel human malignant cells various origins lung carcinoma squamous carcinoma oral carcinoma glioblastoma inhibitory activity combination tumor growth could considered general phenomenon determine effect cell cycle results revealed combination treatment result significant cell growth inhibition induced ros generation cancer cells studied anti proliferative effect related ability combination provoke growth inhibition arrest apoptosis furthermore combination induced arrest closely correlated decreased cyclin cyclin cdc levels
new mathematical formula referred planckian distribution equation pde found fit long tailed histograms generated various fields studies ranging atomic physics single molecule enzymology cell biology brain neurobiology glottometrics econophysics cosmology pde derived gaussian like equation gle non linearly transforming variable keeping coordinate constant assuming gle represents random distribution due symmetry possible define binary logarithm ratio areas curves pde gle measure non randomness order underlying biophysicochemical processes generating long tailed histograms fit pde new function named planckian information may new measure order applied widely natural human sciences serve opposite boltzmann gibbs entropy measure disorder possible rationales universality pde may include universality wave particle duality embedded pde selection subsets random processes thereby breaking symmetry gle basic mechanism generating order organization function iii quantity quality complementarity connection pde peircean semiotics
acetylcholinesterase inhibitors achei one drugs families validated clinical use treatment alzheimer disease reason finding new potent selective acheis always interest since inhibitory activity achei evaluated ellman method herein reported based evaluation potential new achei determination inhibitory activity compared ellman method uses substrate analog acetylthiocholine electrospray ionization ion trap mass spectrometry esi consists monitoring conversion ratio low concentration natural substrate acetylcholine choline present inhibition activity huprine six derivates bearing different functional groups position towards recombinant human rhache electrophorus electricus acetylcholinesterase eelache mechanisms action selected inhibitors evaluated means lineweaver burk plot analysis michaelis menten constants inhibitory constants examined well allow classifying series huprine derivatives inhibition potency comparison reference huprine results demonstrate drugs potent ache inhibitors especially huprine inhibitory activity recombinant human ache rhache picomolar range study reveals interest huprine compounds treatment published elsevier
background cassava starch considered potential source commercial production bioethanol availability low market price used basic source support large scale biological production bioethanol using microbial amylases progression advancement enzymology starch liquefying saccharifying enzymes preferred conversion complex starch polymer various valuable metabolites hydrolytic enzymes selectively cleave internal linkages starch molecule produce free glucose utilized produce bioethanol microbial fermentation results present study several filamentous fungi screened production amylases among aspergillus fumigatus kibge selected based maximum enzyme yield maximum alpha amylase amyloglucosidase glucose formation achieved days fermentation using cassava starch salt precipitation fold purification alpha amylase amyloglucosidase increased times specific activity kumg kumg respectively concentrated amylolytic enzyme mixture incorporated cassava starch slurry give maximum glucose formation fermented using saccharomyces cerevisiae bioethanol yield distillate originated recovery bioethanol gave yield conclusion improved effective dual enzymatic starch degradation method designed production bioethanol using cassava starch technique developed profitable due fast liquefaction saccharification approach employed formation glucose ultimately resulted higher yields alcohol production
fungi genus trichosporon increasingly recognized causative agents superficial invasive fungal disease humans although species considered commensals human skin gastrointestinal tract basidiomycetes increasing cause fungal disease among immunocompromised hosts hematological patients solid organ transplant recipients initiation commensal pathogenic programs trichosporon spp involves adaptation host microenvironment immune system however exact virulence factors activated upon transition pathogenic lifestyle including intricate biology cell wall interact subvert host immune responses remain largely unknown revisit current understanding virulence attributes trichosporon spp particularly asahii interaction host immune system accommodate knowledge within novel perspectives fungal diagnostics therapeutics
objective study assess sensitivity omni klentaq dna polymerase detecting aleutian mink disease virus amdv mink blood tissues pcr without dna extraction presence amdv dna directly tested klentaq plasma serum whole blood spleen homogenates mink months inoculation virus samples bone marrow small intestine liver lungs kidneys lymph nodes mink also tested klentaq dna extracted paired samples plasma aforesaid tissues commercial nucleic acid extraction kit dynabeads silane tested pcr compared extracted dna klentaq detected significantly greater number samples whole blood serum plasma spleen small intestine concluded klentaq preferred system directly detecting amdv dna mink blood tissues lower success rate extracted dna compared klentaq could result dna losses extraction process important factor chronically infected mink low amdv copy number bloodstream direct amdv detection also reduces cost pcr amplification lowers risk sample contamination
tristetraprolin ttp ccch tandem zinc finger protein bind destabilize certain mrnas containing rich element binding sites study novel porcine cdna isolated expressed sequence tag assembly subsequently confirmed pcr analysis designated porcine ttp pottp open reading frame pottp cdna encoding amino acids pottp gene approximately size contains single intron southern blotting analysis demonstrated single copy gene real time quantitative pcr analysis revealed pottp gene constitutively expressed detected tissues highest mrna level lymphoid tissues spleen thymus recombinant tagged pottp protein two zinc finger mutants efficiently expressed purified escherichia coli respectively vitro rna electrophoretic mobility shift assay confirmed direct interaction pottp protein porcine tnf alpha potnf alpha mrna probe interaction eliminated using either two zinc finger mutants pottp consistently mutations within region prevented binding interaction recombinant pottp protein potnf alpha mrna probe results indicate pottp binding protein might regulate turnover certain mrnas vivo
human chimeric mice humanized liver constructed transplantation human hepatocytes several types mice genetic modifications injure endogenous liver cells focus liver urokinase type plasminogen activator transgenic severe combined immunodeficiency upa scid mice widely used human chimeric mice studies far indicate drug metabolism drug transport pharmacological effects toxicological action mice broadly similar humans expression various drug metabolizing enzymes known different humans rodents however expression pattern cytochrome aldehyde oxidase phase enzymes liver human chimeric mice resembles humans host mice metabolism various drugs including warfarin zaleplon ibuprofen naproxen coumarin troglitazone midazolam human chimeric mice mediated human drug metabolizing enzymes host mouse enzymes thus resembles humans pharmacological toxicological effects various drugs human chimeric mice also similar humans current consensus chimeric mice humanized liver useful predict drug metabolism catalyzed cytochrome aldehyde oxidase phase enzymes humans vivo vitro remaining issues discussed review
aim define clinical criteria differentiate eosinophilic gastrointestinal disorder eogd esophagus methods criteria defined based analyses clinical presentation eosinophilic esophagitis eoe subepithelial eosinophilic esophagitis seoe eosinophilic esophageal myositis eoem identified endoscopy manometry serum immunoglobulin levels ige combination histological polymerase chain reaction analyses esophageal tissue samples results five patients eoe endoscopy revealed longitudinal furrows white plaques fixed rings two one patient seoe four eoem endoscopy showed luminal compression using manometry failed peristalsis observed patients eoe seoe variation eoem associated hypercontractile hypertensive peristalsis elevated ige histology revealed following eosinophils per high power field values eoe epithelium subepithelium seoe epithelium subepithelium conventional biopsy eoem none epithelium subepithelium conventional biopsy endoscopic mucosal resection muscularis propria peroral esophageal muscle biopsy presence dilated epithelial intercellular space downward papillae elongation specific eoe eotaxin overexpressed eoe conclusion based clinical histological data identified criteria differentiated eoe seoe eoem reflected different pathogenesis esophageal eogds
vitiligo reflects simultaneous contributions multiple genetic risk factors environmental triggers genomewide association studies discovered approximately genetic loci contributing vitiligo risk many vitiligo susceptibility loci relevant genes dna sequence variants identified many encode proteins involved immune regulation several play roles cellular apoptosis others regulate functions melanocytes although many specific biologic mechanisms need elucidation clear vitiligo autoimmune disease involving complex relationship immune system programming function aspects melanocyte autoimmune target dysregulation immune response
research carried appraisal toxic anti enzymetic action acetone extracts datura inoxia azadirachta indica tribolium castaneum trogoderma granarium sitophilus granarius grain research training storage management cell department entomology protein molecular biology laboratory pmbl department biochemistry uaf year various dilution levels viz plants extracts assessed test insects toxic effect plant extracts castaneum granarium granarius observed exposure period days inhibition different enzymes acetylcholinesterase ache carboxylesterase alpha beta carboxylesterase beta acid phosphatases acp alkaline phosphatases alp calculated spectrophotometrically survivors toxicity assay results evidenced plant extracts lethal effects three stored grain insect species comparison means mortality castaneum granarium granarius proved indica extract effective causing maximum mortality respectively inoxia resulted maximum mortality castaneum granarium granarius respectively results also revealed significant inhibition ache alpha beta acp alp upon exposure various concentrations tested plants plant extract indica proved efficient inhibition test enzymes three stored grain insect pests results suggest ability using plants extracts wheat flour grains protection safe alternative insecticides
greater twofold diversity expression level aquaporin aqp observed membrane fraction submandibular gland smg sprague dawley rats murdiastuti miki yao parvin kosugi tanaka akamatsu kanamori hosoi pflugers arch present study breeding brother sister rats repeated within high aqp producers low ones obtain inbred offspring high low producer rats generations used experiments western blotting levels aqp proteins parotid lacrimal glands lungs low low producers whereas high high producers implying genetic variations gene water channel despite implication aqp mrna levels almost two groups northern blotting suggesting irrelevance transcriptional regulation diversity aqp cdnas smgs two groups sequenced nucleotide sequence aqp cdna low producers indicated existence point mutation leading replacement gly asp third transmembrane domain alteration detected kozak area existence mutation confirmed assessment genomic dna also mutation may resulted abnormal membrane insertion ineffective trafficking aqp since rats mutation showed extremely low membrane expression aqp smg acinar cells decreased water secretion salivary glands
vaccine development extracellular bacteria important sustainability aquaculture industry contrast infections intracellular pathogens remain largely unresolved problem francisella noatunensis subsp orientalis gram negative facultative intracellular bacterium causes disease francisellosis fish francisellosis commonly characterized chronic granulomatous disease high morbidity result high mortality depending host study explored potential bacterial membrane vesicles mvs vaccine agent noatunensis subsp orientalis bacterial mvs spherical structures naturally released membrane bacteria often enriched selected bacterial components toxins signaling molecules mvs isolated broth cultured noatunensis subsp orientalis present work proteomic analysis mass spectrometry revealed mvs contained variety immunogenic factors including intracellular growth proteins lgic lgib known part francisella pathogenicity island fpi well outer membrane protein ompa chaperonin groel chaperone clpb using flow cytometry electron microscopy observed noatunensis subsp orientalis mainly infects myelomonocytic cells vivo vitro immunization mvs isolated noatunensis subsp orientalis protects zebrafish subsequent challenge lethal dose noatunensis subsp orientalis determine mvs induce typical acute inflammatory response mrna expression levels assessed quantitative real time pcr expression tnfa ilb ifng well mhcii mpeg ighm upregulated thus confirming immunogenic properties noatunensis subsp orientalis derived mvs
whereas selenium important antioxidant human metabolism prevent cancer aflatoxins highly carcinogenic brazil nuts eastern western amazon regions evaluated find relationship aflatoxins levels total shell shelled nuts samples collected directly different forest sites analyzed atomic emission spectrometry aflatoxins liquid chromatography tandem mass spectrometry limit quantitation loq loq total aflatoxins nut levels eastern region higher western addition aflatoxins moisture content water activity raw nuts two regions present significant difference either shell shelled minimum maximum minimum maximum regions studies need carried discover role fungi growth stress aflatoxin production mechanisms
metabolic imbalance impairs fertility changes concentrations metabolites hormones blood follicular fluid create unfavourable environment early embryonic development insulin key metabolic hormone known effects fertility insulin concentrations increased energy balance disturbances diabetes metabolic syndrome still insulin frequently used supraphysiological concentrations embryo vitro culture unknown consequences developmental potential offspring present study investigated effects insulin exposure vitro bovine oocyte maturation developmental rates embryo quality gene expression supplementation maturation media insulin gml decreased blastocyst rates compared insulin free control respectively led increased cell numbers nearly cells day compared control transcriptome analysis revealed significant upregulation genes involved lipid metabolism nuclear factor erythroid derived like nrf stress response cell differentiation validated quantitative polymerase chain reaction conclude results present study demonstrate insulin exposure vitro oocyte maturation lasting effect embryo blastocyst stage potential negative effect form specific gene expression perturbations
background dna detection human cytomegalovirus hcmv cerebrospinal fluid csf polymerase chain reaction pcr marker central nervous system cns involvement congenital hcmv infection ccmv prognostic value unknown methods multicenter retrospective study performed using spanish congenital cytomegalovirus infection database rediccmv http www cmvcongenito newborns ccmv lumbar puncture performed included classified according hcmv pcr csf result positive negative clinical characteristics neuroimaging abnormalities plasma viral load audiological neurological outcomes groups compared results total neonates included study positive csf hcmv pcr negative results seventeen patients positive group symptomatic birth compared infants negative group odds ratio confidence interval asymptomatic newborns positive csf hcmv pcr differences groups regarding rate microcephaly neuroimaging abnormalities neurological sequelae months age plasma viral load sensorineural hearing loss snhl birth associated positive csf hcmv pcr result although association found months age conclusions positive hcmv pcr result csf associated symptomatic ccmv snhl birth however differences neuroimaging studies plasma viral load outcomes months found results suggest hcmv pcr csf may useful prognostic marker ccmv
study carried three french hospitals order assess model pharmaceutical load hospital wastewater impact wwtp study called mediflux consisted three successive steps first original prioritization procedure developed laboratory enabled select list relevant molecules different anatomical therapeutic chemical atc classes containing pharmaceuticals specific hospital use anesthetics antineoplastic agents pharmaceuticals dispensed community analytical quantification procedures developed validated according european directive sampling campaigns performed three different hospitals two located paris area one medium sized city paris sampling also carried wastewater treatment plants time order model pharmaceutical loads hospitals predicted concentrations calculated first approach assuming would single box model hospitals effect drug loads human metabolism taken account evaluate fraction drugs eliminated hospital effluent last step comparison measured calculated concentrations showed satisfactory correlation pharmaceuticals mainly short elimination half lifes weak human metabolism others appeared modeling take account various factors patient use pharmacokinetic data molecule stability wastewater
breast cancer represents major health burden europe north america recently published data report breast cancer second leading cause cancer related death women worldwide breast cancer regarded highly heterogeneous disease terms clinical course biological behavior divided several molecular subtypes different prognosis treatment responses discovery numerous non coding rnas dramatically changed understanding cell biology especially pathophysiology cancer long non coding rnas lncrnas non protein coding transcripts nucleotides length several studies demonstrated role key regulators gene expression cell biology carcinogenesis deregulated expression levels lncrnas observed various types cancers including breast cancer lncrnas involved cancer initiation progression metastases review summarize recent literature highlight current status class long non coding lncrnas breast cancer
background alterations gut microbiota composition bacterial metabolites increasingly recognized affect host metabolism basis metabolic diseases obesity type diabetes intestinal enteroendocrine cells eec sense gut luminal content accordingly secrete hormones modulate glucose lipid metabolism affect satiety become evident microbial metabolic products significantly affect eec function scope approach review discuss current insights role gut microbiota metabolites development obesity elaborate interventions modulate eec action key findings conclusions studies including fecal transplantation roux gastric bypass rygb humans animal models suggest gut microbiota metabolites causally contribute development obesity emerging evidence suggests gut microbiota metabolites modulate secretion eec hormones regulate appetite insulin secretion dispersed intestinal expression low abundance make eec difficult study since current intestinal sampling methods humans mostly limited colon leaves large part eec function understudied would therefore relevant develop means extend sampling methods throughout entire tract elsevier ltd rights reserved
distribution zika virus spread throughout world announced zika virus disease global health problem tropical country indonesia potential spread zika virus letter report single case zika jambi province published eijkman institute molecular biology case analyzed temperature scene considered appropriate factor development zika virus
micrornas mirnas family non protein coding endogenous small rnas group gene regulators function mainly binding untranslated regions specific target messenger rna mrna leading gene inactivation repression mrna transcription induction mrna mature mirnas short molecules approximately nucleotides length regulate wide range biological functions cell proliferation death cancer progression cellular mirna expression levels used biomarkers onset disease states gene therapy genetic disorders methods detection mirna mainly include northern blotting microarray polymerase chain reaction pcr review focuses use electrochemical biosensors detection microrna elsevier rights reserved
cytochrome cyp super family mixed function oxidases responsible human metabolism drugs endogenous compounds well environmental dietary substances many cyp enzymes function liver presence cype brain demonstrating role nicotine ethanol metabolism examine association cype polymorphism risk oral cancer performed case control study south indian population patients oral cancer age sexmatched controls recruited three snps cype gene dbsnp cype dbsnp cype dbsnp genotyped using taqman allelic discrimination locus monomorphic study subjects whereas inherited minor allele frequency none polymorphic sites deviated hwe controls much lesser frequency uncommon allele seen control subjects caucasians east asians significant differences oral cancer controls distribution either allelic genotype frequencies none haplotypes showed significant association oral cancer results suggest cype major independent determinant pathogenesis oral cancer south indians
mycoplasma ovipneumoniae main responsible pleuropneumonia sheep disease spreading world caused great suffering losses sheep husbandry current methodologies detecting identifying somehow time consuming complicated expensive herein powerful biosensing platform effective detection explored based manganese dioxide mno microsphere absorbing labeled single strand dna ssdna probe different base number complementary conserved sequence employed results demonstrated fluorescence enhancement exhibited good linear relationship plasmid added concentration range copies detection limit copies biosensing platform finally employed feasible probe plasmid detection good reproducibility stability exhibited good performance discriminate perfect complementary target base mismatched dna sequence illustrated using mno microsphere absorbing ssdna probe biosensor detect simple rapid economical selective sensitive way showed significantly potential extensive biochemical application elsevier rights reserved
altered metabolism linked appearance various human diseases better understanding disease associated metabolic changes may lead identification novel prognostic biomarkers development new therapies genome scale metabolic models gems employed studying human metabolism systematic manner well understanding complex human diseases past decade metabolic models one fundamental aspects systems biology started contributing understanding mechanistic relationship genotype phenotype review focus construction human metabolic reaction database generation healthy cell type cancer specific gems using different procedures potential applications developments study human metabolism identification metabolic changes associated various disorders examine silico genome scale reconstructions employed simulate metabolic flux distributions high throughput omics data analyzed context dependent fashion insights yielded mechanistic modeling approach used identifying new therapeutic agents drug targets well discovery novel biomarkers finally recent advancements genome scale modeling future challenge developing model whole body metabolism presented emergent contribution gems personalized translational medicine also discussed
aims several screening methods applied early diagnosis colorectal cancer colorectal cancer patients diagnosed localized stage order find novel biomarkers diagnosis colorectal cancer profiling serum levels fatty acids main components fats important factors human metabolism performed using sera colorectal cancer patients materials methods total colorectal cancer patients eight healthy volunteers participated study serum levels fatty acids including free fatty acids esterified fatty acids evaluated gas chromatography mass spectrometry partial least squares discriminant ana lysis performed basis serum fatty acids detected gas chromatography mass spectrometry results serum levels nine fatty acids exhibited distinct differences colorectal cancer patients healthy volunteers levels four fatty acids higher colorectal cancer patients healthy volunteers five fatty acids lower changes also observed early clinical stage furthermore levels long chain fatty acids tendency increased sera colorectal cancer patients conclusions pathogenesis colorectal cancer leads changes composition serum fatty acids including free fatty acids esterified fatty acids results suggest serum fatty acid profiling may used novel diagnostic tool early stage colorectal cancer
racemic licarbazepine lic active metabolite oxcarbazepine oxc eslicarbazepine acetate esl appearing human plasma licarbazepine lic licarbazepine lic however human metabolism oxc esl lic differs lic lic enantiomeric ratio observed plasma lic appears higher proportion esl administration oxc versus enantioselective pharmacokinetics lic enantiomers found mice separate administration humans following oxc treatment since protein binding drugs may enantioselective determining factor pharmacokinetics binding lic lic mouse human total plasma proteins specifically human serum albumin hsa alpha acid glycoprotein agp herein investigated first time free bound fractions lic lic separated ultrafiltration previous vitro incubation spiked plasma samples protein solutions enantiomer results revealed extent binding lic enantiomers total plasma proteins independent drug concentration species considered data also suggest binding lic enantiomers hsa greater agp moreover absence enantioselectivity binding lic enantiomers mouse human plasma proteins hsa agp evident conclusion findings suggest enantioselectivity observed vivo biodisposition lic lic dependent affinity plasma proteins copyright john wiley sons ltd
hexamoll dincha diisononyl cyclohexane dicarboxylate new high molecular weight plasticizer non aromatic phthalate substitute follow study investigated extensive oxidative metabolism hexamoll dincha oral dosage three male volunteers body weight urine samples consecutively collected post dose chemical analysis carried hplc labeled internal standards new metabolites tentatively identified quantified via fragmentation analogies new standard substances addition five urinary dinch metabolites previously reported identified two groups extensively oxidized metabolites characterized multiple side chain oxidation breakdown hydroxylation cyclohexane ring five newly identified carboxylated breakdown metabolites represented sum applied dose mchxch cyclohexane dicarboxylic acid mono carboxyhexyl ester identified major metabolite thus represents second important specific metabolite dinch minch less excreted ring hydroxylated metabolites four metabolites identified based upon new reference standard also update oxo minch applied dose follow study increases total amount recovered dose describes new major metabolite mchxch dinch used additional valuable specific biomarker assess dincha exposure future human biomonitoring studies
selenium essential nutrient antioxidant defenses fish role preventing immunosuppression caused oxidative stress study demonstrated relation oxidative stress immune status long supplementation period result evaluation immunological hematological antioxidant responses well growth performance pacu fed diets supplemented different concentrations organic selenium yeast final analyzed selenium concentrations respectively days dietary supplementation yeast analyzed value restored production antioxidant enzymes glutathione peroxidase gpx glutathione transferase gst consequently allowed increased immunological parameters leukocyte respiratory burst activity lysozyme activity hematological parameters red blood cell count rbc hematocrit htc mean corpuscular volume mcv white blood cell count wbc supplementation pacu diets yeast days improved immune response antioxidant defenses suggesting oxidative stress impairs immune system response prevent excessive reactive oxygen species cells indicating occurrence physiological trade immune antioxidant systems higher levels yeast increased leukocyte respiratory burst activity wbc thrombocyte counts rbc htc gst gpx enzymes however yeast decreased lysozyme levels wbc thrombocyte counts rbc htc mcv gst gpx enzymes findings important future studies showed negative effect oxidative stress immunity may help prevent inhibition expected immune response immunomodulators administration vaccination also possible meet dietary selenium requirement pacu estimated elsevier ltd rights reserved
study aimed isolate characterize microbial culture able degrade sulfonamides sulfamethoxazole smx degrading microorganisms enriched activated sludge wastewater resultant mixed culture composed four bacterial strains achromobacter denitrificans could degrade smx sulfonamide used sole source carbon nitrogen energy stoichiometric accumulation amino methylisoxazole strain able remove smx rate mol smx cell dry weight rate doubled supplement amino acids members mixed culture added besides smx strain able degrade sulfonamides anti microbial activity environmental achromobacter spp could degrade smx suggesting property broadly distributed members genus studies needed shed additional light genetics enzymology process elsevier rights reserved
mycobacterium avium subsp paratuberculosis map etiologic agent johne disease ruminants enteritis significant economic impact worldwide distribution vaccination one cost effective infectious disease control measures unfortunately current vaccines reduce clinical disease shedding limited efficacy provide long term protective immunity several strategies followed mine map genome virulence determinants could applied vaccine diagnostic assay development study comprehensive mutant bank map mutants constructed screened vitro phenotypes related virulence strategy designated maximize identification genes important map pathogenesis without relying studies mycobacterial species may translate similar effects map bank screened mutants colony morphology alterations susceptibility cycloserine impairment siderophore production secretion reduced cell association decreased biofilm clump formation mutants interesting phenotypes analyzed pcr southern blotting dna sequencing determine transposon insertion sites insertion sites mapped upstream map map cluster internal either mod operon gene map within coding sequence isr several intergenic regions growth curves broth cultures invasion assays kinetics survival replication primary bovine macrophages also determined ability vectors carrying generate stable map mutants also investigated
background beta mannans abundant diverse plant structural storage polysaccharides certain human gut microbiota members including health promoting bifidobacterium spp catabolize dietary mannans little insight available enzymology mannan deconstruction gut ecological niche report biochemical properties first family subfamily glycoside hydrolase mannanase probiotic bacterium bifidobacterium animalis subsp lactis blman results blman possesses novel low affinity carbohydrate binding module cbm specific soluble mannan displays highest catalytic efficiency reported date mannanase owing high kcat low using locust bean galactomannan substrate novel cbm blman mediates increased binding soluble mannan based affinity electrophoresis surface plasmon resonance analysis confirmed binding cbm manno oligosaccharides albeit slightly lower affinity catalytic module enzyme first example low affinity mannan specific cbm forms subfamily cbm together close homologs present mannanases members new subfamily lack aromatic residue mediating binding insoluble cellulose canonical cbm members consistent observed low mannan affinity conclusion blman evolved efficient deconstruction soluble mannans reflected exceptionally low presence atypical low affinity cbm increases binding specifically soluble mannan causing minimal decrease catalytic efficiency opposed enzymes canonical mannan binding modules features highlight fine tuning catalytic binding properties support specialization towards preferred substrate likely confer advantage adaptation competitive ecological niches
background end west african ebola virus disease evd outbreaks total cases probable confirmed deaths reported guinea clearly surveillance activities aiming stopping human human transmission breakthrough evd outbreak management application times easier said done article presents five confirmed probable evd cases arose conakry towards end guinea epidemic demonstrate flaws surveillance follow case presentation case safe burial requirements followed cases negative polymerase chain reaction pcr results interpreted infection first case sample may taken properly second disease possibly early stage case stopped border health checkpoint despite high temperature allowed continue bus journey case oral swab sample supposedly taken death could found retrospective testing despite characteristic symptomatology case identified suspect case long weeks conclusion epidemic contexts health systems must able track samples suspect cases deaths regardless laboratory results social mobilization communities training health care facilities must strengthened tail outbreak avoid natural slackening disease surveillance particular long lasting deadly epidemics
background whole genome duplication wgd tandem duplication provide two critical sources raw genetic material genome complexity evolutionary novelty little known complexity sesamum indicum genome diverged common ancestor paleodiploid vitis vinifera experienced wgd events results analyzed functional divergence different classes inter intra genome gene pairs ancestral events uncover multiple layers evolutionary dynamics acting process forming modern indicum genome comprehensive inter genome analyses revealed syntenic orthologous gene pairs retained among two subgenomes indicum compared vinifera although evidence significant differences selection pressure intra genomic analyses duplicated gene pairs experienced fractionation remaining duplicated gene pairs undergone functional divergence diversifying selection analysis events indicated paralogous gene pairs tandem arrays genes experienced functional divergence diversifying selection sequence diversification different classes gene pairs revealed events occurred wgd event others following ancestral gene order indicating ancient events time prior wgd event comparison function analyses different classes gene pairs indicated wgd evolutionary events responsible introducing genes enabled exploration novel complementary functionalities whilst maintaining individual plant ruggedness conclusions study first investigated functional divergence different classes gene pairs characterize dynamic processes associated evolutionary event indicum data demonstrated massive distinct functional divergence among different classes gene pairs provided genome scale view gene function diversification explaining complexity indicum genome hope provides biological model study mechanism plant species formation particularly context evolutionary history flowering plants offers novel insights study angiosperm genomes
purpose review anca associated vasculitides group small vessel vasculitides characterized autoantibodies recognizing neutrophil cytoplasmic antigens mpo examine current clinical molecular immunology understanding anca associated vasculitides discuss current needs understanding pathogenic mechanisms rare diseases recent findings majority efforts understand pathogenesis diseases focused dissecting neutrophil biology neutrophil primary expressor anca autoantigens however number important genetic clinical cellular biology observations suggest attempts understand pathogenesis anca vasculitides move away emphasis role neutrophil instead focus potential role immune cell mediators summary whether neutrophils key determinant anca associated vasculitis pathogenesis revisited detail neutrophil centric view pathogenesis diseases fully account important genetic clinical cellular biology observations implicate important appreciated roles monocytes cells refocusing findings likely lead new discovery novel therapeutic targets identification clinically useful biomarkers disease activity
aging affects numerous aspects cell biology senescence associated changes stress response beginning emerge obtain mechanistic insights events examined formation canonical non canonical stress granules sgs cytoplasm generation key event exposure physiological environmental stressors requires nucleating proteins gbp tia tiar stress related signaling events analyze formation used two independent models somatic cell aging model systems cellular senescence impaired assembly two classes compromised formation canonical sgs skewed production non canonical sgs dissected mechanisms underlying senescence dependent changes granule biogenesis identified several specific targets modulated aging thus demonstrate depletion gbp tia fiar senescent cells show loss gbp contributed impaired formation reveal aging reduced levels transcription factor regulated gbp tia fiar abundance assembly canonical sgs relies phosphorylation translation initiation factor elf alpha show senescence cause elf alpha hyperphosphorylation crep subunit protein phosphatase critical reverse stress dependent phosphorylation elfa demonstrate loss crep correlated aging related hyperphosphorylation elf alpha together identified significant changes stress response aging cells provide mechanistic insights based work propose decline formation provide new biomarker evaluate cellular aging elsevier rights reserved
synthetic biology often employs enzymes biosynthesis compounds purposeful function define synthetic enzymology application enzymological principles synthetic biology describe use enabling platform synthetic biology purposeful production compounds biomedical commercial importance particular demonstrated use synthetic polyketide enzymology means develop lead polyketide based compounds antimicrobial therapeutics exemplified modular coupling acid coa ligases type iii polyketide synthases biosynthesis development polyketide based biochemicals using wild type rationally designed mutants type iii polyketide synthase isolated oryza sativa ospks produced chemically diverse library novel polyketides identified two bioactive antimicrobials hydroxy hydroxyphenyl ethenyl pyran one bisnoryangonin trihydroxy methoxybenzyl benzopyran trione respectively screen collection gram positive gram negative bacteria purification crystallization structural resolution recombinant ospks angstrom resolution also reported using described route synthetic polyketide enzymology library ospks mutants generated additional means increase diversity polyketide product library expect utility synthetic enzymology extended classes biomolecules translated various purposeful functions field synthetic biology progresses
kruppel like factor klf gklf originally characterized zinc finger transcription factor essential terminal differentiation cell lineage allocation several cell types mouse mice lacking klf die postnatally within hours due impaired skin barrier function subsequent dehydration recently klf also used cooperation transcription factors reprogram differentiated cells pluripotent embryonic stem cell like cells moreover involvement oncogenesis also ascribed klf aberrantly expressed types tumors breast gastric colon cancer previously shown klf strongly expressed postmeiotic germ cells mouse human testes suggesting role klf also spermiogenesis order analyze function deleted klf germ cells using cre loxp system homologous recombination klf locus confirmed genomic southern blotting absence protein germ cells demonstrated western blotting immunofluorescence despite important roles several significant biological settings deletion klf germ cells impair spermiogenesis histologically mutant testes appeared normal mice fertile order identify genes regulated klf male germ cells performed microarray analyses using whole genome array identified many genes exhibiting changed expression mutants even including telomerase reverse transcriptase mrna stem cell marker however summary lack klf alone prevent complete spermatogenesis elsevier ireland ltd rights reserved
widely distributed north american species peromyscus leucopus maniculatus cricetine rodents important natural reservoirs several zoonotic diseases humans lyme disease human granulocytic anaplasmosis babesiosis erhlichiosis hard tickborne relapsing fever powassan virus encephalitis hantavirus pulmonary syndrome plague infections frequently disabling sometimes fatal humans peromyscines display little pathology apparently suffer consequences even prevalence persistent infection population high peromyscus spp unable clear infections appear partial resistance limits burden pathogen addition display traits infection tolerance reduces damage infection research complementary resistance tolerance phenomena peromyscus relevance disease control measures targeting natural reservoirs understanding mechanisms comparatively greater sickness many humans infections elsevier ltd rights reserved
metabolic pathophysiology underlying ischemic stroke remains poorly understood gain insight mechanisms performed comparative metabolic transcriptional analysis effects cerebral ischemia metabolism cerebral cortex using middle cerebral artery occlusion mcao rat model metabolic profiling gas chromatography mass spectrometry analysis showed clear separation ischemia control group decreases fructose phosphate ribulose phosphate suggested enhancement pentose phosphate pathway ppp cerebral ischemia min mcao without reperfusion transcriptional profiling microarray hybridization indicated toll like receptor mitogen activated protein kinase mapk signaling pathways upregulated cerebral ischemia without reperfusion relation ppp upregulation heat shock protein hsp observed mapk signaling pathway confirmed real time polymerase chain reaction immunoblotting showed slight increase hsp protein expression marked increase hsp phosphorylation serine min min mcao without reperfusion corresponding upregulation glucose phosphate dehydrogenase gpd activity increase nadph nad ratio also observed min mcao furthermore intracerebroventricular injection ataxia telangiectasia mutated atm kinase inhibitor significantly reduced hsp phosphorylation gpd upregulation mcao protein kinase inhibitor cid affect hsp phosphorylation consequently gpd activation via ischemia induced hsp phosphorylation atm kinase may part endogenous antioxidant defense neuroprotection mechanism earliest stages ischemia findings important therapeutic implications treatment stroke ibro published elsevier ltd rights reserved
background fatty acids classified short chain scfa medium chain mcfa long chain hold promise adjunctive chemotherapeutic agents treatment colorectal cancer antineoplastic potential mcfa remains underexplored accordingly compared mcfa lauric acid scfa butyrate terms capacity induce apoptosis modify glutathione gsh levels generate reactive oxygen species ros modify phases cell cycle caco iec intestinal cell lines methods caco iec cells treated lauric acid butyrate vehicle controls apoptosis ros cell cycle analysis determined flow cytometry gsh availability assessed enzymology results lauric acid induced apoptosis caco iec cells compared butyrate caco cells lauric acid reduced gsh availability generated ros compared butyrate lauric acid reduced caco iec cells arrested cells phases lauric acid induced apoptosis iec cells compared butyrate butyrate protected iec cells ros induced damage whereas lauric acid induced high levels ros compared butyrate conclusion compared butyrate lauric acid displayed preferential antineoplastic properties including induction apoptosis crc cell line karger basel
leinamycin lnm sulfur containing antitumor antibiotic featuring unusual dioxo dithiolane moiety spiro fused thiazole containing membered lactam ring dioxo dithiolane moiety essential lnm antitumor activity virtue ability generate episulfonium ion intermediate capable alkylating dna previously cloned sequenced lnmgene cluster streptomyces atroolivaceus vivo vitro characterizations lnm biosynthetic machinery since established membered macrolactam backbone synthesized lnmp lnmq lnmj lnmi lnmg alkyl branch lnm installed lnmk lnml lnmm lnmf iii leinamycin lnm bearing thiol moiety nascent product lnm hybrid nonribosomal peptide synthetase nrps acyltransferase less type polyketide synthase pks sulfur incorporation lnm however addressed report bioinformatics analysis reveals pyridoxal phosphate plp dependent domain termed cysteine lyase domain lnmj within pks module lnmj lnmj domain catalyzes bond cleavage using cysteine cysteine modified analogs substrates plp dependent beta elimination reaction establishing cysteine origin sulfur lnm iii lnmj domain sharing sequence homology enzymes catalyzing bond cleavage represents new family pks domains expands chemistry enzymology pkss might exploited incorporate sulfur polyketide natural products pks engineering
although potent androgen receptor pathway inhibitors arpi improve overall survival metastatic prostate cancer patients treatment induced neuroendocrine prostate cancer nepc consequence selection pressures arpi becoming common clinical issue improved understanding molecular biology nepc essential development new effective management approaches nepc study identify splice variant myst esa associated factor meaf gene meaf highly expressed nepc tumor biopsies neuroendocrine cell lines prostate lung cancers show meaf splicing stimulated neuronal rna splicing factor srrm rather inducing neuroendocrine trans differentiation cells prostate adenocarcinoma meaf upregulation stimulates cell proliferation anchorage independent cell growth invasion xenograft tumor growth gene microarray identifies meaf actions part mediated genes findings suggest meaf variant induce neuroendocrine differentiation prostate cancer cells rather facilitates nepc progression increasing proliferation rate cells acquired neuroendocrine phenotypes
irrigation water recognized important microbial risk factor fruits vegetables many production areas still lack information microbiological quality different irrigation water sources climatic conditions influence safety vegetables produced brazil study evaluated distribution generic coli prevalence coil two different water sources ponds streams bordering farmlands urban areas used irrigation commercially produced lettuces southern brazil also evaluated effect agricultural factors meteorological conditions potential contamination water produce samples longitudinal study conducted four farms year july august results showed generic coli prevalence irrigation water samples lettuces respectively indicating irrigation water important source contamination lettuces significant differences detected counts coli two different surface water sources climatic conditions particularly rainfall environmental temperature influenced high concentration coil highest loads coil irrigation water lettuces found warmest time year coli detected qualitative polymerase chain reaction qpcr water samples confirmed isolation culture media elsevier ltd rights reserved
understanding genetics influences inter individual variation antibody titers response measles vaccination vital understanding possible sources vaccine failure well improved vaccine development although recognized human leukocyte antigen hla genes immunoglobulin allotype genes play significant roles immune response significant variation antibody titers explained genes obtain complete estimate role entire genome used large panel single nucleotide polymorphisms estimate heritability antibody response measles vaccine based subjects european ancestry estimated heritability standard error also estimated heritability attributable chromosome found large range chromosome specific heritabilities notably chromosome largest estimate chromosome harbors hla estimated heritability compared prior study twins community resulted heritability estimate study suggests either many rare genetic variants many common genetic variants small effect sizes contribute variations antibody titers response measles vaccine elsevier ltd rights reserved
plants exposed types abiotic stresses process growth development could adversely affect productivity postharvest storage quality plants current study expression snac changes physiological parameters analyzed tomato seedlings various abiotic conditions hormone treatments results demonstrate six genes induced stresses differential induction levels snac gene expression profiles likely related aba meja signaling pathways addition stress hormone treated seedlings exhibited significant increases proline content antioxidant enzyme activities mda significantly increased seedlings exposed stress decreased hormone treated seedlings data collectively suggest snac might function aba signaling pathways regulation proline antioxidant systems study combines molecular biology physiology provide valuable information exploring functional roles nac genes response environmental stresses indicates genes may exhibit potential enhancing stress tolerance transgenic tomato plants improving postharvest storage quality tomato plants
advances technology made surgery children safer faster management pediatric cataract made rapid progress past decade availability safer anesthesia newer technique predictable intraocular lens iol power calculation better understanding neurobiology genetics amblyopia management improved iol designs preventing visual axis opacification adjuvant postoperative care modern vitrectomy machines minimally invasive instruments radiofrequency diathermy plasma blades help immensely complicated cases preoperative evaluation ultrasound biomicroscopy optical coherence tomography oct allows better planning surgical procedure future holds good stem cell research customized oct zepto precision pulse capsulotomy
long non coding rnas icrnas associated various biological roles embryogenesis stem cell biology cellular development present specific tissue expression profiles aberrant expression incrnas thought play critical role progression development various cancer types including gliomas glioblastomas gbm common malignant primary brain tumours brain cancer stem cells bcsc isolated low high grade tumours adults children cell fraction express neuronal stem cell surface marker purpose study investigate expression profiles incrnas brain tumour cells determine potential biological function purpose umg umg gbm stem cell series used human parental brain cancer cells included control group expressions disease related human incrna profiles studied lightcycler real time pcr expression profiles lncrna genes analyzed significant dysregulation compared control cells among incrnas incrna genes regulated incrna genes regulated pcat meg hotair lncrnas showed low expression glioblastoma compared human parental brain cancer stem cells indicating role tumour suppressor genes gliomas result significant changes anti cancer gene expressions detected disease related human incrna array plates identification novel target genes may lead promising developments human brain cancer treatment elsevier rights reserved
pneumocystis carinii adhesion alveolar epithelial cells well established thought prerequisite initiation pneumocystis pneumonia binding events occur part major surface glycoprotein msg well integrin like molecule termed pcint recent data sequencing project also demonstrate dna sequences homologous genes important candida spp binding mammalian host cells well organism binding polystyrene surfaces biofilm formation one genes flo transcription factor needed downstream camp pka pathway mediated activation major adhesion flocculin flo yeast cloned cdna library utilizing partial sequence available genome database chef blot genomic dna yielded single band providing evidence gene present organism blastp analysis predicted protein demonstrated homology saccharomyces cerevisiae flo northern blotting demonstrated greatest expression comparable reported fungal biofilm milieu western blot immunoprecipitation assays pcflo protein isolated cyst tropic life forms confirmed presence cognate protein life forms heterologous expression pcflo cdna flo delta deficient yeast strains demonstrated pcflo able restore yeast binding polystyrene invasive growth yeast flo delta cells furthermore pcflo promoted yeast binding hek human epithelial cells strengthening functional classification flo transcription factor taken together data suggest pcflo expressed may exert activity organism adhesion biofilm formation
new hepatitis virus hbv therapies expected breakthrough benefit patients hbv functional cure sustained hepatitis surface antigen loss anti hbs gain normalization serum aminotransferases therapy virologic complete cure additionally includes loss hbv covalently closed circular dna currently available endpoints therapy inadequate evaluate efficacy many new therapeutics therefore either new ways using existing virologic endpoints laboratory values entirely new biomarkers needed review discuss currently used endpoints potential new endpoints well new markers needed assess ability hbv therapeutics achieve functional virologic cure various phases hbv infection addition discuss patient selection differing phases hbv impacts choice hbv drug needed achieve cure
southern blotting common method used study gene organization current methods dna transfer southern blotting however inefficient high concentration agarose gels report method high performance southern blotting short dna fragments nucleosomal dnas using discontinuous agarose zone gel results show sharp well resolved fractionation short dna fragments comparable high concentration agarose gel could obtained using low concentration agarose gel small zone high concentration agarose resulting dna transfer highly efficient rapid
nonbinary single nucleotide polymorphisms snps potential forensic genetic markers discrimination power greater normal binary snps detect highly degraded samples previously developed nonbinary snp multiplex typing assay study selected additional nonbinary snps ncbi snp database verified pyrosequencing nonbinary snps analyzed using fluorescent labeled snapshot multiplex snp typing method allele frequencies genetic parameters nonbinary snps determined among unrelated individuals han populations china total power discrimination cumulative probability exclusion moreover result combination nonbinary snp assay nonbinary snp assay previously developed demonstrated cumulative probability exclusion nonbinary snps significant linkage disequilibrium observed nonbinary snps thus concluded new system consisting new nonbinary snps could provide highly informative polymorphic data would used forensic application would serve potentially valuable supplement forensic dna analysis
review covers recent developments mass spectrometry based applications dealing functional proteomics special emphasis enzymology introduction mass spectrometry research field led enormous increase knowledge recent years major challenge identification biologically active substances complex mixtures biologically active substances one hand potential regulators enzymes elucidation function identity regulators may accomplished different strategies discussed review promising approach thereby seems one step procedure enables identification functionality identity biologically active substances parallel thus avoids misinterpretation hand besides detection regulators identification endogenous substrates known enzymes emerging research field case studies quite rare moreover term biologically active substances may also encompass proteins diverse biological functions elucidation functionality far unknown proteins complex mixtures another branch functional proteomics investigations also discussed review
aims verrucous carcinoma variant well differentiated squamous cell carcinoma anal region regarded synonymous giant condyloma buschke lowenstein tumour blt aetiology diagnostic criteria clinical behaviour lesions controversial recent studies suggest sites associated human papillomaviruses hpv hypothesized anal also related hpv blt hpv induced lesion methods results ten cases four cases blt included several techniques used hpv detection situ hybridization hpv six different polymerase chain reaction pcr protocols detection least hpv types alpha beta gamma genera situ hybridization high risk hpv mrna immunohistochemistry morphometric analysis also performed alpha gamma pvs found case hpv detected cases blt overexpression present lesions among microscopic features absence koilocytosis enlarged spinous cells seem useful distinguish blt conclusions results suggest anal similarly sites associated hpv infection must distinguished blt associated low risk hpv well set diagnostic criteria possible ascertain clinical behaviour optimal treatment lesions
despite clear need progress toward vaccine congenital cytomegalovirus cmv slow however recent events provided new interest several vaccine candidates either clinical trials trials close starting issue clinical vaccine immunology schleiss colleagues show nonreplicating lymphocytic choriomeningitis virus rlcmv vectored vaccine expressing cmv glycoprotein induces cells improves pup survival guinea pig model congenital cmv infection clin vaccine immunol https doi org cvi combination vaccine appeared effective
induction metallothioneins mts metal activated transcription factor mtf provides model response analyzing transcriptional gene regulation heavy metals report inhibition protein synthesis cycloheximide chx increases induction approximately five fold phenomenon designated superinduction characterization superinduction revealed time concentration dependent chx requires presence mtf activator occurs transcriptional level suggesting labile repressor control induction genetic analyses using mtf null cells metal response element mre driven reporter construct showed superinduction mediated mtf mre dependent transcription analyses intracellular zinc content inductively coupled plasma emission spectroscopy fluorescence imaging demonstrated treatment chx alone chx plus inducer increase total zinc accumulation concentration free zinc cells conditions superinduction occurs moreover superinduction observed cells cultured zinc depleted medium suggesting superinduction involve elevation intracellular zinc concentration northern blotting showed chx chx affect expression mrna mtf immunoblotting using antibodies specific mtf demonstrated induces regulation mtf protein whereas cotreatment chx blocked induced degradation mtf findings reveal new mechanistic aspect superinduction labile repressor negatively controls agonist induced turnover mtf protein wiley periodicals inc
pyrenean desman galemys pyrenaicus small semiaquatic mammal endemic pyrenean mountains northern half iberian peninsula lives cold well oxygenated flowing mountain streams species currently classified vulnerable iucn red list undergoing habitat loss fragmentation decades inevitably impacting distribution recent genetic study based mitochondrial intronic sequences showed genetic variability pyrenean desman low pyrenees study investigated potential existence genetic structure gene flow smaller scale using polymorphic microsatellite loci pyrenean desman elusive species supplemented tissue sample collection samples feces collected french range species successfully identified individuals based fecal samples bayesian analyses revealed genetic geographic clusters eastern central western including genetic subclusters origins tracing back years clusters characterized low levels genetic diversity high inbreeding coefficients although gene flow among clusters appeared limited populations seem exchanged alleles recently therefore connectivity watersheds enhanced maintain genetic diversity potentially improve long term survival pyrenean desman france
renal cell carcinoma rcc one common kidney malignancies upgraded comprehension molecular biology implicated development cancer stimulated increase research development innovative antitumor therapies aim study analyze medical literature hypertension renal toxicities adverse events vascular endothelial growth factor vegf signaling pathway inhibitor anti vegf therapy relevant studies identified pubmed clinicaltrials gov databases eligible studies phase iii prospective clinical trials meta analyses retrospective studies described events hypertension nephrotoxicity patients received anti vegf therapy total studies included systematic review incidence grade hypertension ranged proteinuria increased creatinine levels ascertained patients respectively adverse events often mild severity may sometimes lead treatment discontinuation nephrotoxicity hypertension related multiple mechanisms however one main disturbances patients vegf inhibition significant risk developing hypertension renal dysfunction among patients receiving anti vegf treatment however also evidence side effects may used biomarkers response antiangiogenic agents
background double stranded breaks dsbs serious form dna damage repaired via homologous recombination repair hrr non homologous end joining nhej nhej predominates mammalian cells stages cell cycle viewed error prone although notion sufficiently challenged due shortcomings many current systems multi copy episomes provide large pool genetic material repair studied repaired plasmids back cloned bacteria characterized sequence alterations used ebv based episomes carrying resistance marker genes repair studies single dsb generated virally encoded endonuclease cleaving rapidly high efficiency brief time post infection employed pcr southern blot follow kinetics repair formation processing intermediates replica plating screen plasmids altered joints resulting loss chloramphenicol resistance employed system study role metnase metnase found humans primates key component nhej pathway function fully characterized intact cells results found repair episomes end joining highly accurate cells lack metnase less rescued plasmids showed deletions instead hek cells express metnase transfected metnase revealed large number rescued plasmids altered repaired joint typically form large deletions moreover quantitative pcr southern blotting revealed less accurately repaired plasmids metnase expressing cells conclusions careful examination fidelity nhej repair mammalian cells carrying cohesive overhang ends revealed repair efficient highly accurate predominant hrr however background cells important establishing accuracy human cells perhaps surprisingly much prone generate deletions repaired junctions metnase abundantly expressed
glycogen synthase kinase gsk serine threonine kinase participates array critical cellular processes gsk first characterized enzyme phosphorylated inactivated glycogen synthase however subsequent studies revealed moon lighting protein involved numerous signaling pathways regulate metabolism also roles apoptosis cell cycle progression cell renewal differentiation embiyogenesis migration regulation gene transcription stem cell biology survival review discuss roles gsk plays various diseases well pivotal kinase interacts multiple signaling pathways pik pten akt mtor ras raf mek erk wnt beta catenin hedgehog notch mutations occur pathways alter effects natural gsk activity regulating signaling circuits lead cancer well diseases novel roles micrornas play regulation effects gsk also evaluated targeting gsk pathways may improve therapy overcome therapeutic resistance elsevier rights reserved
background substitutions xylan main chain widely accepted limit plant cell wall degradability acetylations considered one important obstacles hence understanding modes action range acetylxylan esterases acxes ample importance increase understanding enzymology plant decay bioremediation also enable efficient bioconversion plant biomass methods study modes action acetylxylan esterases acxes belonging carbohydrate esterase families xylooligosaccharides generated hardwood acetyl glucuronoxylan compared using maldi tof supporting data obtained following enzymatic deacetylation nmr spectroscopy conclusions none used enzymes capable complete deacetylation except linear xylooligosaccharides completely deacetylated esterases presence endoxylanase clear difference observed performance serine type esterases families aspartate metalloesterases family difference mainly due inability acxes catalyze deacetylation acetylated xylopyranosyl residues complete deacetylation hardwood acetyl glucuronoxylan requires additional deacetylating enzyme general significance results contribute understanding microbial degradation plant biomass outline way achieve complete saccharification plant hemicelluloses undergo alkaline pretreatment elsevier rights reserved
although genetic testing amyotrophic lateral sclerosis als widely available unknown proportion patients als access genetic counseling testing patient attitudes towards als genetic testing studied conducted national survey als patients enrolled agency toxic substances disease registry consisted multiple choice questions two item likert scale series assessing respondents experience attitude toward genetic testing survey response rate completed responses genetic testing offered completed offered minority respondents saw genetic counselor much likely offered genetic testing respondents family history als likely offered testing complete testing respondents family history als likely report favorable attitude towards genetic testing respondents saw genetic counselor majority respondents felt genetic testing offered patients als results indicate als patients may limited access genetic testing perceive benefit service development practice guidelines genetic testing als include routine offer genetic counseling may result broader consistent access services
determination sialic acids sias recently gained interest potential role markers inflammatory disorders chronic diseases hydrolysis conjugated derivatives solid phase extraction spe derivatization steps constitute sample preparation prior insertion analytical sample liquid chromatograph laser induced fluorescence lif detector present method determination two representative sias human metabolism ultrasound accelerated hydrolysis released free sias efficiently concentrated dynamic manner using lab valve lov module allows automation spe preconcentration cleanup step line connected dmb labeling sias derivatization shortened min required conventional heating method min ultrasound assistance individual separation target analytes achieved within min lif detection endowed overall method high sensitivity lods loqs provided method ranged expressed column amount respectively high efficiency interferents removal spe enabled application method four different biofluids serum urine saliva breast milk determination target metabolites elsevier rights reserved
background order study novel genes related rat embryonic implantation novel implantation associated gene iag identified characterized rat uterus early pregnancy iag initially derived suppressive subtracted hybridization cdna library rat uterus used analyse differentially expressed genes preimplantation implantation period methods full length cdna sequence iag cloned rat uterus pregnancy race expression iag uterus early pregnancy pseudopregnancy artificial decidualization activation delayed implantation detected northern blotting situ hybridization western blotting immunofluorescence endometrial stromal cells escs isolated rat uterus effect iag escs proliferation apoptosis determined mtt assay tunel hoechst staining apoptosis related proteins escs detected western blotting results differential patterns iag expression detected rat embryo uterus peri implantation period iag specifically localized glandular epithelium luminal epithelium contrast expression iag significantly altered uterus pseudopregnancy artificial decidualization significantly increased uterus activation delayed implantation stable expression introduced iag inhibited proliferation vitro cultured escs significant apoptosis also detected escs overexpressing iag along enhancement bax protein expression conclusions overexpression iag inhibit escs proliferation induce escs apoptosis bax may play important role process iag induced apoptosis
dehydrogenase reductase sdr family member dhrs sdrc retsdr one many endoplasmic reticulum bound members sdr superfamily preliminary results indicate potential significance human metabolism dhrs containing tev cleavable flag tag expressed cell line solubilised purified reconstituted liposomes enable improved characterisation enzyme future igepal determined best detergent solubilisation process solubilised dhrs purified using affinity chromatography purified enzyme subjected tev cleavage affinity tags repurified using subtractive imac cleaved uncleaved versions dhrs successfully reconstituted liposomes addition using tobacco specific carcinogen methylnitrosamino pyridyl butanone nnk substrate cleaved liposomal dhrs found inactive whereas pure uncleaved liposomal dhrs confirmed enzymes reduce carbonyl group substrates elsevier inc rights reserved
ability escape apoptosis hallmark cancer initiating cells key factor resistance oncolytic therapy identify fama ubiquitous evolutionarily conserved apoptosome activating protein investigate potential pro apoptotic tumor suppressor function gastrointestinal stromal tumors gists interaction fama apoptotic peptidase activating factor apaf identified yeast two hybrid screen studied deletion mutants glutathione transferase pull immunoprecipitation immunofluorescence effects fama overexpression knock apoptosis sensitivity examined cancer cells zebrafish embryos expression fama gists histogenetically related cells including interstitial cells cajal iccs fibroblast like cells flcs icc stem cells icc scs investigated northern blotting reverse transcriptionpolymerase chain reaction immunohistochemistry western immunoblotting tumorigenicity gist cells transformed murine icc scs stably transduced express fama studied xeno allografting immunocompromised mice fama found bind apaf enhance induction mitochondrial apoptosis fama protein mrna dramatically reduced lost gist samples representing three independent patient cohorts whereas iccs icc scs flcs presumed normal counterparts gist found robustly express fama protein mrna fama expression much reduced tumorigenic icc scs expression fama gist cells transformed icc scs increased apoptosis sensitivity diminished tumorigenicity data suggest fama novel pro apoptotic tumor suppressor lost gist tumorigenesis new emergence drug resistance major problem gastrointestinal stromal tumors gists tumor cell escape appears many instances associated acquired resistance apoptosis protein known fama found bind apoptotic peptidase activating factor apaf profoundly reduced gists fama expression established cells tumor sensitivity apoptosis increased xenograft allograft murine models tumor growth slowed fama expression hence fama may tumor suppressive role gists knowledge function could aid development novel gist therapies
background bryophyllum pinnata pinnata common medicinal plant used traditional medicine india countries curing various infections bowel diseases healing wounds ailments however anticancer properties poorly defined view broad spectrum therapeutic potential pinnata designed study examine anti cancer anti human papillomavirus hpv activities leaf extracts tried isolate active principle methods chloroform extract derived bulk botanically well characterized pulverized pinnata leaves separated using column chromatography step gradient petroleum ether ethyl acetate fractions characterized phyto chemical compounds tlc hptlc nmr biological activity fractions examined mtt based cell viability assay electrophoretic mobility shift assay northern blotting assay apoptosis related proteins immunoblotting human cervical cancer cells results results showed presence growth inhibitory activity crude leaf extracts resolved fraction petroleum ether ethyl acetate showed investigations anti viral activity extract fraction revealed specific anti hpv activity cervical cancer cells evidenced downregulation constitutively active specific dna binding activity suppression oncogenic fos jun expression accompanied inhibition hpv transcription addition inhibiting growth fraction strongly induced apoptosis evidenced increased expression pro apoptotic protein bax suppression anti apoptotic molecules bcl activation caspase cleavage parp phytochemical analysis fraction hptlc nmr indicated presence activity resembled bryophyllin conclusions study therefore demonstrates presence anticancer anti hpv activity pinnata leaves exploited potential anticancer anti hpv therapeutic treatment hpv infection cervical cancer
chemokines family small cytokines share typical key structure stabilized disulfide bonds cysteine residues terminal protein secreted great variety cells several different conditions function directly dependent interactions receptors chemokines involved cell maturation differentiation infection autoimmunity cancer general situation immune components involved however role postfracture inflammation fracture healing yet well established article discuss response chemokines bone fracture potential roles postfracture inflammation healing based data studies previously published studies
viral vaccines remarkable positive impacts human health well health domestic animal populations despite impressive vaccine successes however many infectious diseases yet efficiently controlled eradicated vaccination often impossible vaccinate sufficient proportion population recent advances molecular biology suggest centuries old method individual based vaccine delivery may cusp major revolution specifically genetic engineering brings life possibility live transmissible vaccine unfortunately releasing highly transmissible vaccine poses substantial evolutionary risks including reversion high virulence documented oral polio vaccine alternative far safer approach rely genetically engineered weakly transmissible vaccines reduced scope evolutionary reversion use mathematical models evaluate potential efficacy weakly transmissible vaccines results demonstrate vaccines even modest ability transmit significantly lower incidence infectious disease facilitate eradication efforts consequently weakly transmissible vaccines could provide important tool controlling infectious disease wild domestic animal populations reducing risks emerging infectious disease humans
background human skin shows various morphological characteristics depending body site distinct phenotypes explained basis variance epidermal keratinocytes presence skin appendages spatial distinction dermal components fully elucidated objectives identify characterize profiles mrnas abundantly specifically expressed fibroblasts derived trunk skin palmoplantar skin oral mucosa methods order identify distinct mrna expression trunk skin fibroblasts subtraction cdna screening performed first followed northern blotting western blotting immunohistochemistry cultured human rat dermal fibroblasts skin tissues finally whole mount situ hybridization wish performed examine differences expression corresponding gene developmental stage mouse embryos results identified three cdna clones encoding fibronectin pregnancy specific beta glycoprotein beta actin respectively whose mrnas abundantly specifically expressed trunk skin fibroblasts integrins confirmed expressed selectively human rat trunk skin fibroblasts terms rna protein levels compared fibroblasts derived plamoplantar skin oral mucosa wish demonstrated localized around hair follicles mouse embryos conclusion one potent extracellular matrix molecules demonstrated spatially transcribed depending body sites distinct expression suggestive essential commitment process cutaneous development morphogenesis appendages originated hair germ paucity palmoplantar skin oral mucosa might explain characteristics skin phenotypes
deoxy xylulose phosphate dxp synthase catalyzes formation dxp pyruvate glyceraldehyde phosphate grap thiamin diphosphate dependent manner first step essential pathway isoprenoids human pathogens understanding mechanism unique enzyme critical developing new anti infective agents selectively target isoprenoid biosynthesis present study used mutagenesis combination protein fluorescence kinetics experiments investigate roles arg arg tyr substrate binding catalysis results support random sequential preferred order mechanism predict arg arg involved binding acceptor substrate grap glyceraldehyde alternative acceptor substrate lacking phosphoryl group predicted interact arg arg also accelerates decarboxylation predecarboxylation intermediate alpha lactylthiamin diphosphate lthdp dxp synthase indicating binding interaction absolutely required hydroxyaldehyde sufficiently triggers decarboxylation unexpectedly tyr contributes grap affinity required lthdp formation grap promoted decarboxylation time resolved spectroscopy nmr experiments indicate lthdp significantly stabilized variants compared wild type dxp synthase absence acceptor substrate substitutions appear affect rate grap promoted lthdp decarboxylation presence high levels grap lthdp formation remains rate limiting step results suggest role residues promoting grap binding turn facilitates decarboxylation also highlight interesting differences dxp synthase thiamin diphosphate dependent enzymes
breast cancer second common cause mortality women therefore identification novel putative markers required improve diagnosis prognosis selenium known protect mammary epithelial cells oxidative dna damage inhibit initiation phase carcinogenesis stimulating dna repair apoptosis regulation consequently present study focused attention selenoprotein family involvement breast cancer present study performed global analysis seleno transcriptome expression human breast cancer mcf mda cell lines compared healthy breast mcf cells using reverse transcription quantitative polymerase chain reaction present data revealed presence differently expressed genes mcf mda cells compared mcf cells four downregulated glutathione peroxidase gpx gpx gpx gpx three upregulated deiodinase iodothyronine type gpx gpx genes additionally interactomic investigation performed present study evaluate association downregulated upregulated genes identify putative hub nodes represent centers association genes capable direct control gene networks network analysis revealed differentially regulated genes exception selenoprotein implicated network presents three hub nodes interconnected selenoprotein mrnas including estrogen receptor catenin beta ctnnb overall data demonstrated first time profile seleno mrnas specific human breast cells indicating genes alter expression basis positivity negativity breast cancer cells
background estrogen progesterone potent breast mitogens addition steroid hormones multiple signaling pathways input estrogen receptor progesterone receptor actions via posttranslational events protein kinases commonly activated breast cancers phosphorylate steroid hormone receptors srs profoundly impact activities methods better understand role modified prs breast cancer measured total phospho ser prs human breast tumors represented individual tissue spots within tissue microarray assayed regulation site human tumor explants cultured vivo complement analysis assayed target gene regulation luminal breast cancer models following treatment progestin promegestone antiprogestins mifepristone onapristone aglepristone conditions receptor regulated lys sumoylation intact sumo deficient via mutation mimic persistent ser phosphorylation selected phospho driven target genes validated qrt pcr following runx shrna knockdown breast cancer cell lines primary secondary mammosphere assays performed implicate phospho ser prs epidermal growth factor signaling runx breast cancer stem cell biology results phospho ser species abundant majority luminal breast tumors promoter selectivity exquisitely sensitive posttranslational modifications phospho expression target gene programs significantly associated invasive lobular carcinoma ilc consistent finding activated phospho prs undergo rapid ligand dependent turnover unique phospho gene signatures prevalent breast tumors clinically designated low null luminal included gene sets associated cancer stem cell biology pax ahr runx validation studies demonstrated requirement runx regulation selected phospho target genes slca vitro mammosphere formation assays support role phospho ser prs via growth factor egf signaling well runx potent drivers breast cancer stem cell fate conclusions conclude ser phosphorylation common event breast cancer progression required maintain breast cancer stem cell fate part via cooperation growth factor initiated signaling pathways key phospho target genes including slca runx clinical measurement phosphorylated prs considered useful marker breast tumor stem cell potential alternatively unique phospho target gene sets may provide useful tools identify patients likely respond selective modulators block ser phosphorylation part rational combination antiestrogens endocrine therapies designed durably block breast cancer recurrence
flux heat human activities commercial energy use renewable source combustion human metabolism incorporated variable resolution global weather forecast model along improved urban surface roughness radiative properties sensitivity studies changes used show addition anthropogenic heat improves accuracy surface air temperature forecasts addition urban surface radiative properties secondary effect forecast temperature addition urban surface roughness changes minimal effect comparisons observed forecast boundary layer heights suggest parameter poorly predicted model employed impact anthropogenic heating likely substantial increase pbl heights urban regions decreased atmospheric stability also evidenced comparisons diffusion constants heat moisture original modified models show increases factor factor near surface depending size city examination effects spatial averaging heat flux suggests significant sub gridscale anthropogenic heating effects may occur implies results current simulations represent lower bounds simulations suggest anthropogenic heat flux large local impact important implications simulations air quality radiative balance regional global scales crown copyright published elsevier ltd rights reserved
background leprosy hansen disease spectral disease whose clinical forms mostly depends host immune genetic factors different toll like receptors tlr variants described associated leprosy lack replication across different populations objectives evaluate role polymorphisms genes tlr tlr tlr susceptibility leprosy genetic case control study verify association genotypes markers immunological profile serum patients leprosy methods pre designed taqman assays used genotype markers tlr tlr tlr panel cytokines chemokines accessed enzime linked immunosorbent assay elisa test serum subgroup patients without leprosy reactions findings results show association allele tlr gene increased risk leprosy per odds ratio addition evaluating association different genotypes tlr markers cytokine chemokine serological levels appears immunological marker regulated polymorphism three tlr genes evaluated whereas different tlr genotypes associated differential production mcp ccl furthermore relevant serum markers cxcl seemed regulated tlr variants beta related tlr genotypes main conclusions together data points tested tlr markers may regulatory role immunity mycobacterium leprae driving host production key cytokines chemokines involved pathogenesis disease
important aim bone regenerative medicine design biomaterials controlled chemical topographical features guide stem cell fate towards osteoblasts without addition specific osteogenic factors herein find sprayed bioactive biocompatible calcium phosphate substrates cap controlled topography induce well orchestrated manner wharton jelly stem cells scs differentiation osteoblastic lineage without osteogenic supplements resulting scs commitment exhibits features native bone formation three dimensional bone like nodule osteocyte like cells embedded mineralized type collagen knowledge results present first observation whole differentiation process stem cell osteocyteslike synthetic material suggests great potential sprayed cap scs bone tissue engineering unique features may facilitate transition bench bedside development successful engineered bone statement significance designing materials direct stem cell fate relevant impact stem cell biology provides insights facilitating clinical application regenerative medicine inspired natural bone compositions friendly automated spray assisted system used build calcium phosphate substrate cap sprayed biomimetic solutions using mild conditions led formation cap controlled physical properties good bioactivity biocompatibility herein show via optimization physical properties cap substrate induce osteogenic differentiation wharton jelly stem cells scs without adding osteogenic supplement factors results suggest great potential sprayed cap scs bone tissue engineering may facilitate transition bench beside development clinically successful engineered bone acta materialia inc published elsevier ltd rights reserved
interested long time behaviour positive solutions cauchy problem involving integro differential equation partial derivative integral omega integral omega supplemented initial condition omega problem used population dynamics models capture evolution clonal population structured respect phenotypic trait context function represents density individuals characterized trait domain trait values omega bounded subset kernels respectively account competition individuals mutations occurring every generation function represents growth rate competition independent trait construct positive stationary solution belongs space radon measures omega moreover case measure regular bounded prove uniqueness show non negative initial datum omega boolean infinity omega solution cauchy problem converges limit measure omega also exhibit example measure singular non unique investigate numerically long time behaviour solution situation numerical simulations seem reveal dependence limit measure respect initial datum
six years passed since national institute mental health nimh united states launched research domain criteria rdoc initiative rdoc introduces framework research biology mental illness integrates research findings across multiple levels information framework outlines constructs represent specific quantifiable dimensions behavior responses acute threat cognitive control corresponding units analysis used study constructs beginning levels genes molecules cells circuits physiology moving behaviors self reports systematic review literature search conducted synthesize empirical research published since proposal framework incorporated rdoc forty eight peer reviewed scholarly articles met eligibility criteria review studies differed according whether analyzed rdoc constructs units analysis within clinically diagnosed non psychiatric samples commonly studied constructs subsumed within domains negative valence systems positive valence systems cognitive systems providing initial results primarily connected genetics brain circuits physiology research findings behavior self reports prospects future research adopting rdoc matrix utilizing dimensional approach studying biology mental illness discussed
background carnitine acetyltransferase crat mitochondrial matrix protein directly influences intramitochondrial acetyl coa pools murine crat encoded single gene located opposite orientation head head pppr gene sharing condensed directional promoter since decreased crat expression correlated metabolic inflexibility subsequent pathological consequences aim reveal define possible activators crat transcription normal embryonic murine liver cell line bnl via nuclear factors based key metabolites mainly regulate hepatic expression crat describe functional characterization crat promoter region conditions carnitine deficiency supplementation well fenofibrate induction cell culture cells results murine crat promoter displays characteristics housekeeping gene lacks tata box rich harbors two binding sites analysis promoter activity crat luciferase assays uncovered carnitine sensitive region within transcription start electrophoretic mobility shift supershift assays proved sequence element carnitine sensitive rxr alpha binding site also showed sensitivity application anti ppar alpha anti pparbp antibodies addition analysed specific rxr alpha ppar alpha site southwestern blotting technique could pin three protein factors binding promoter element qpcr could quantify nutrigenomic effect carnitine fenofibrate conclusions results indicate cooperative interplay carnitine ppar alpha transcriptional regulation murine crat nutrigenomical relevance created experimental proof mucrat gene clearly ppara target carnitine fenofibrate inducers crat transcripts important hyperlipidemic drug fenofibrate potent one consequence pharmacological interaction
analyzed loci including autosomal chromosomal short tandem repeats strs indel sex determining marker sample unrelated individuals mongolian population using globalfiler pcr amplification kit provide expanded reliable forensic database khalkh among mongolian minor groups accounts entire mongolian population total different dna profiles found work highest gene diversity observed locus lowest value found tpox locus although individual power discrimination estimates varied studied loci combined probability match str loci estimated highly informative based results pair wise genetic distances multi dimensional scaling plot showed mongolians clustered europeans asians although mongolia geographically located northeastern asia thus present survey mongolian population may help establish comprehensive reference database forensic population genetic analyses
enormous amount information available cell biology created challenge selecting core concepts teaching undergraduates one way define set essential core ideas cell biology analyze specific cell biology community teaching students main objective analyze cell biology content currently taught brazilian universities collected syllabi cell biology courses public universities brazil analyzed frequency cell biology topics course also compared brazilian data contents major cell biology textbook analysis showed cell biology topics plasma membrane cytoskeleton present similar brazilian curricula analyzed others cell signaling cell differentiation present similar average cell biology content taught brazilian universities quite different presented textbook discuss several possible explanations observations also suggest list essential cell biology topics biological biomedical undergraduate course comparative discussion cell biology topics presented could valuable educational contexts
objective aim vivo study evaluate two different types implant abutment connections screwed connection cemented connection analyzing peri implant bacteria microflora well clinical parameters patients methods twenty implants selected inserted patients screwed implant abutment connection group cemented implant abutment connection group peri implant microflora collected least days prosthetic rehabilitation using paper points inserted peri implant sulcus polymerase chain reaction pcr real time analyzed presence bacteria periodontal pathogens candida albicans results findings showed bacteria colonized groups analyzed average bacterial count group compared group statistically significant differences observed group however bacterial colonization peri implant sulci pathogenic threshold bacteria indicating high risk peri implantitis also group results showed microflora composed bacteria analyzed case bacterial colonization peri implant sulci pathogenic threshold bacterium indicating lower risk peri implantitis moreover clinical parameters ppd sbi confirmed greater risk peri implantitis group compared group conclusions concluded also days implants screwed connection showed higher risk peri implantitis implants cemented connection
maintenance hematopoietic stem cell hsc compartment depends ability metabolize exogenously endogenously generated toxins repair cellular damage caused toxins reactive aldehydes demonstrated cause specific genotoxic injury namely dna interstrand cross links aldehyde dehydrogenase aldh member isoenzyme aldh family different substrate specificities subcellular localization patterns expression aldh localized mitochondria essential metabolism acetaldehyde thereby placing directly downstream ethanol metabolism deficiency aldh expression function caused single nucleotide substitution resulting amino acid change called aldh genetic polymorphism affects east asians million people causes well known asian flushing syndrome results disulfiram like reactions ethanol consumption recently aldh genotype found associated marrow failure increased risk sporadic aplastic anemia rapid progression fanconi anemia review discusses unexpected interrelationship aldehydes aldh hematopoietic stem cell biology particular relationship fanconi anemia authors published elsevier inc
prostate cancer common cancer men accounts quarter new cases although treatment localised cancer successful cure patients presenting invasive prostate cancer less treatment options generally treated androgen ablation therapies eventually tumours become hormone resistant patients develop castration resistant prostate cancer crpc successful curative treatments highlights need new treatment strategies order prevent prostate cancer recurrence treatment resistance cell populations heterogeneous prostate tumour must targeted including rare cancer stem cell csc population ets transcription factor family members recognised common feature multiple cancers including prostate cancer aberrant expression loss tumour suppressor function inactivating mutations formation fusion genes observed notably tmprss erg gene fusion present approximately prostate cancers prostate cscs however role ets transcription factors prostate cancer less well understood review describe prostate epithelial cell hierarchy discuss evidence behind prostate cscs inherent resistance conventional cancer therapies known proposed roles ets family transcription factors prostate epithelial cell differentiation regulation csc phenotype discussed well might targeted therapy elsevier ltd rights reserved
background alkb iron oxoglutarate dioxygenase repairs alkylated dna results enzymological biophysical methods used develop quantitative mechanistic scheme conclusion conformational transition controls order substrate binding coupling two sequential sub reactions catalyzed alkb significance results provide striking example importance protein dynamics efficient catalysis multistep reaction central goal enzymology understand physicochemical mechanisms enable proteins catalyze complex chemical reactions high efficiency recent methodological advances enable contribution protein dynamics enzyme efficiency explored deeply utilize enzymological biophysical studies including nmr measurements conformational dynamics develop quantitative mechanistic scheme dna repair enzyme alkb like iron oxoglutarate dependent dioxygenases alkb employs two step mechanism oxidation oxoglutarate generates highly reactive enzyme bound oxyferryl intermediate case alkb slowly hydroxylates alkylated nucleobase results demonstrate microsecond millisecond time scale conformational transition facilitates proper sequential order substrate binding alkb mutations altering dynamics transition allow generation oxyferryl intermediate promote premature quenching solvent uncouples oxoglutarate turnover nucleobase oxidation therefore efficient catalysis alkb depends upon dynamics specific conformational transition establishing another paradigm control enzyme function protein dynamics
quiescin sulfhydryl oxidase qsox catalyst disulfide bond formation found plants animals mammalian avian trypanosomal qsox enzymes studied detail plant qsox yet characterized differences plant animal qsoxs domain composition active site sequences raise question whether qsoxs function mechanism demonstrate arabidopsis thaliana qsox produced bacteria folded functional sulfhydryl oxidase exhibit interdomain electron transfer observed animal counterpart based finding exploration respective roles redox active sites plant qsox reason concatenation warranted federation european biochemical societies published elsevier rights reserved
cathinone derived designer drugs recently grown popular drugs abuse dimethylmethcathinone dmmc recently abused one alternatives controlled cathinones present study dmmc major metabolites dimethylcathinone dmc dimethylphenyl methylaminopropan beta dmmc diastereomers amino dimethylphenyl propan beta dmc diastereomers identified quantified dmmc user urine gas chromatography mass spectrometry liquid chromatography tandem mass spectrometry using newly synthesized authentic standards putative metabolites including oxidative metabolites xylyl group conjugated metabolites also detected urine identified putative phase metabolites indicated metabolic pathways dmmc include reduction ketone group corresponding alcohols demethylation primary amine oxidation xylyl group corresponding alcohol carboxylate forms combination steps concentrations identified metabolites found increase slightly enzymatic hydrolysis suggesting compounds partially metabolized respective conjugates
apolipoprotein ciii apociii major constituent triglyceride rich lipoprotein proposed key contributor hypertriglyceridemia basis inhibitory effects lipoprotein lipase many immuno chemical methods developed human apociii quantification including elisa however sensitive quantitative assay nonhuman primates commercially available developed sensitive quantitative highly specific sandwich elisa measure apociii nonhuman primate human serum assay generates linear calibration curve using apociii standard purified cynomolgus monkey serum highly reproducible intra interplate respectively sensitive enough distinguish difference apociii present serum interference purified human apolipoprotein aii cii assay also used measure human apociii linear calibration curve using purified human apociii standard fast highly sensitive elisa could useful tool investigate role apociii lipoprotein transport cardiovascular disease wang song wagner pachuk subramanian development sensitive elisa quantify apolipoprotein ciii nonhuman primate serum lipid res
anti erbb antibodies used convenient tools exploration erbb functional mechanisms treatment erbb overexpressing tumors employed yeast pichia pastoris express anti erbb single chain antibody scfv derived tumor inhibitory monoclonal antibody yield exceed shake flask cultures considered poor codon usage bias may one limiting factor leading inefficient translation scfv production designed synthesized full length scfv gene choosing pastoris preferred codons keeping content relatively low level codon optimization increased scfv expression level fold northern blotting confirmed increase scfv expression mainly due enhancement translation efficiency investigation culture conditions revealed maximal cell growth scfv expression achieved casamino acids methanol induction secreted scfv easily purified homogeneous product culture supernatants one step using chelating affinity chromatography yield approximately functional studies showed scfv could internalized high efficiency binding erbb overexpressing cells suggesting regent may prove especially useful erbb targeted immunotherapy elsevier inc rights reserved
physical treatments gained great interest recent years control many postharvest diseases fruits vegetables total absence residues treated product minimal environmental impact present review shows extensive research work conducted many years increased last years developing physical means consistent disease control review include use cold storage main physical method delaying reducing biotic abiotic diseases physical treatments like heat including hot water hot air treatments radio frequency microwave hypobaric hyperbaric pressure far ultraviolet radiation light treated promising control means controlled modified atmospheres complementary physical tools essential reduce delay development postharvest pathogens particular emphasis given mode action involve direct effect pathogen lethal sub lethal spore germination mycelial growth fungi resistance induction host well known nowadays new tools available molecular biology easy highlight physiological biochemical pathways phenomenon based besides benefits treatment different commodities also limitations use including low persistence risk adverse effects technological problems commercial application discussed elsevier rights reserved
backgound beta carotene exhibits biological activity provitamin key step vitamin formation cleavage beta carotene retinal enzyme designated beta carotene monooxygenase bcm recently reported expression bcm gene intestine feedback regulation retinoic acid however regulation bcm gene expression various tissues still unknown aim study present study identified full length cdna encoding rat bcm gene investigated regulation expression several tissues presence vitamin deficiency methods cloned full length cdna encoding bcm gene rat intestinal cdna library hybridization screening bcm gene expression examined using northern blotting reverse transcription pcr analysis also investigated whether bcm gene expression regulated retinoids several tissues vitamin deficient rats results sequence analysis clone revealed open reading frame bases encoding protein amino acids predicted polypeptide showed identity mouse human chicken bcm respectively rat bcm mrna highly expressed intestine liver weak expression testes kidneys lungs immunoblotting revealed rat bcm kda protein bcm gene expression increased small intestine vitamin deficiency compared rats control diet upregulation suppressed trans atra cis cis bcm gene expression lungs testes also suppressed atra cis rats vitamin deficiency however hepatic bcm gene expression decreased atra renal expression affected either retinoid small intestine major site beta carotene conversion intestinal bcm gene expression may tightly regulated conclusion data suggest bcm gene expression several tissues may regulated level conversion beta carotene retinal prevent excess retinol homeostasis may occur level conversion beta carotene retinal several tissues
emergence chemical weapons global threat hands terrorist groups together increasing number pesticides intoxications environmental contaminations worldwide called attention scientific community need improvement technologies detoxification organophosphorus compounds compelling strategy use bioremediation enzymes able hydrolyze molecules harmless chemical species several enzymes studied engineered purpose however mechanisms action well understood theoretical investigations may help elucidate important aspects mechanisms help development efficient bio remediators review point major contributions computational methodologies applied enzyme based detoxification ops furthermore highlight use pte pon dfp buche enzymes used detoxification process computational tools molecular docking molecular dynamics simulations combined quantum mechanical molecular mechanics continue contribute important area research
aim understanding colonization dynamics crucial management invasive species compare genetic structure historical central europe recent spain invasive populations native captive populations north american raccoon procyon lotor aim analyse effects colonization age genetic population structure understand role captive individuals potential founders test role rivers dispersal species location north america spain central europe methods genotyped wild caught raccoons spain central europe zoos native range microsatellite loci sequenced mitochondrial dna fragment control region analysed population genetic structuring bayesian assignment methods fca landscape genetic analysis tested effect waterways dispersal species results detected genetic clusters baps supporting hypothesis multiple introductions ongoing releases invasive range native population showed nearly genetic structure central european clusters showed signals admixture whereas spanish clusters clearly separated admixture central european clusters probably caused recent contact populations different origin landscape genetic analysis showed rivers represent neither barriers corridors central europe main conclusions spanish populations genetically diverse central european expect increased within population diversity still isolated populations merge range expansion results provide evidence gene flow zoos free ranging populations better control pet trade essential management efforts concerning invasive species study shows genetic analyses help reconstruct invasion processes important better understanding effective management invasive species
grapevine berry growth veraison paralleled notable intake water sugar results show sultanina seedless variety intake significantly improved gibberellic acid normally sprayed get commercial berry size stage pedicel xylem functionality lost presumed water transport occurs via phloem implies possible role water channels cell membranes aquaporins two complementary approaches used evaluate effect expression aquaporin genes first one pip tip probes derived sultanina cloned amplicons ests used northern blotting results experiments showed uniform type response genes exhibiting intense expression early developmental stages veraison others showing lower expression difference second place confirmed possible role controlling pip tip gene expression results quite diverse terms timing level response hormonal treatment spite diversity tendency maintain higher expression level post veraison treated plants observed microarray hybridizations showed heterogeneous response treatment different genes aquaporin family however last experiments must considered preliminary technical issues mainly requirement better reproducibility level pre veraison developmental stage one lowest levels aquaporin genes expression observed
improved method genetic transformation cucumber cucumis sativus shinhokusei developed vacuum infiltration cotyledonary explants agrobacterium suspension enhanced efficiency agrobacterium infection proximal regions explants cultivation filter paper wicks suppressed necrosis explants leading increased regeneration efficiency putative transgenic plants screened kanamycin resistance green fluorescent protein gfp fluorescence integration transgene cucumber genome confirmed genomic polymerase chain reaction pcr southern blotting transgenic plants grew normally seeds obtained lines finally stable integration transmission transgene generations confirmed gfp fluorescence genomic pcr average transgenic efficiency producing cucumbers method among highest values reported date using kanamycin selective agent
human experience barley well established several millennia barley research fundamental understanding raw materials malting brewing distilling distillers long indebted malting brewing distilling researchers information barley malt relevant operations originally distilling barley research focussed parameters defining barley quality plant performance developed understanding properties genetics barley malt years several strategic milestones identified showing progression related research themes culminating current state knowledge barley include development fermentability method together biochemistry enzymology underlying starch cell wall hydrolysis resulted greater understanding processing properties subsequent improvements performance ethyl carbamate barley derived carcinogen present range potable spirits concern distillers identification genetic marker barley precursor epiheterodendrin laid foundations application modern non gmo genetics developing improved barley varieties benefit whole supply chain together approaches underline mutual interdependence applied research genetic approaches achieving substantial advances knowledge copyright institute brewing distilling
objective potassium channels atp sensitive family atp channel inhibited increase intracellular atp electrophysiological studies demonstrated kinetics pharmacological properties kat channels vary among different tissues suggesting structurally functionally distinct types studies showing human periodontal ligament pdl cells respond mechanical stress increasing atp release participates bone resorption bone homeostasis study investigated existence kat channel subunit single channel properties human periodontal ligaments materials method human pdl cells isolated healthy erupted third molar patch clamp experiments human pdl fibroblasts seeded plastic dishes inside patch clamp recordings performed voltage clamp mode reverse transcriptase polymerase chain reaction pcr conducted identify channel subunits pair wise comparisons performed paired test value considered significant results observed mrna transcripts kir kir surb subuits human pdl cells inside patch mode single channel conductance symmetrical concentration inward rectification seen atp free bath solution reversal potential currents found symmetrical concentration bath solution single channel currents almost blocked adding atp bath solution however currents blocked glibenclamide subunit specific atp channel blocker conclusions results indicate human pdl cells express atp channels subunit including surb kir kir sensitive atp insensitive glibenclamide elsevier ltd rights reserved
prepared total rna gram positive soil bacterium bacillus subtilis different rna extraction procedures compare suitability northern blot detection tiny rnas similar mers rnas intermediate size terms signal quality intensity reproducibility analysis included two hot phenol methods two trizol extraction procedures found signal intensity detection sensitivity makes key difference total rnas prepared hot phenol method comprise length spectrum trnas large ribosomal rnas larger rnas less abundant trizol preparations instead enrich rnas trna size smaller thus hot phenol methods choice detection intermediate sized longer rnas whereas trizol extraction procedures suited detection tiny rnas
sucrose induces expression mir production mir controlled squamosa promoter binding protein like spl transcription factor copper deficiency arabidopsis thaliana little else however known sucrose regulated copper homeostasis arabidopsis employed microarray technology screen sucrose responsive micrornas mirnas identified several candidates using northern blotting addition mir mir mir mir also responsive sucrose furthermore induction mir mir sucrose depends presence spl mir mir induction high sucrose eliminated high copper meanwhile high sucrose treatment strongly suppressed copper accumulation knock spl dramatically reduced copper accumulation plants low sucrose effect corn promised presence high levels sucrose taken together results suggest connection sucrose signaling copper accumulation cells sucrose regulated copper accumulation spl dependent spl independent arabidopsis elsevier ireland ltd rights reserved
purpose study determine efficacy nucleic acid sequence based amplification nasba method detecting noroviruses artificially naturally contaminated shellfish used fecal samples tested positive noroviruses electron microscopy develop nasba assay viruses oligonucleotide primers targeting polymerase coding region used amplify viral rna isothermal process resulted accumulation rna amplicons amplicons detected hybridization digoxigenin labeled oligonucleotide probes highly specific genogroup genogroup gii noroviruses expected band appeared denaturing agarose gel without nonspecific band specific signal amplicon obtained northern blotting many repeats fecal samples belonged gii belonged positive noroviruses nasba target rna concentrations low detected fecal specimens using nasba assay applied artificially contaminated shellfish sensitivity nucleic acid shellfish tissue potential use assay also confirmed naturally contaminated shellfish collected different ponds guangzhou city china samples positive noroviruses belonged gii belonged nasba assay provided rapid efficient way detecting noroviruses fecal samples demonstrated potential detecting noroviruses food environmental samples high specificity sensitivity
report case repeated mdpv consumptions resulted severe psychosis agitation prompting concomitant abuse benzodiazepines year old man found irresponsive apartment brought emergency department local hospital rapidly recovered self reported recently injected doses mdpv bought internet left hospital without medical cares days admitted due severe agitation delirium hallucinations reported use mdpv pharmaceutical drugs preceding week sedated diazepam chlorpromazine urine samples collected occasions sent testing using liquid chromatography high resolution mass spectrometry hrms liquid chromatography high resolution multiple mass spectrometry hrms orbitrap hrms analysis revealed presence mdpv phase phase metabolites demethylenyl mdpv demethylenyl methyl mdpv demethylenyl methyl oxo mdpv demethylenyl hydroxy alkyl mdpv demethylenyl methyl hydroxy alkyl mdpv demethylenyl oxo mdpv corresponding glucuronides alprazolam alprazolam metabolite first admission time second access mdpv metabolites alprazolam temazepam chlordiazepoxide detected together diazepam metabolites hrms use determine following concentrations respectively first second admission mdpv alprazolam alpha hydroxyalprazolam mdpv alprazolam alpha hydroxyalprazolam chlordiazepoxide temazepam diazepam nordiazepam oxazepam toxicological findings corroborated referred concomitant use multiple pharmaceutical drugs benzodiazepines confirmation previous hypothesis human metabolism mdpv could inferred analysis urine elsevier ireland ltd rights reserved
photobiomodulation pbm describes light induced photochemical reactions achieved application red near infrared lasers led light low energy densities noninvasive painless method used clinical areas controversial outcomes demand skeptical look promising potential effects detailed vitro study osteoblast cells irradiated diode lasers energy densities cell viability proliferation bone formation osteoblast differentiation evaluated methylthiazole tetrazolium mtt assay alamar blue assay acridine orange propidium iodide staining alkaline phosphatase alp activity alizarin red staining reverse transcription polymerase chain reaction pcr test expression collagen type alpl osteocalcin results indicate studied energy doses transient effect laser irradiation osteoblast viability proliferation similarly laser irradiation appear effect alp activity results confirmed pcr analysis osteoblast markers study suggests several irradiation parameters variations methods clearly established laboratory laser treatment becomes postulated application bone tissue regeneration clinical level
rationale direct reprogramming cardiac fibroblasts cardiomyocytes recently emerged novel promising approach regenerate injured myocardium previously demonstrated feasibility approach vitro vivo using combination micrornas mir mir mir mir named mir combo however mechanism mir combo mediated direct cardiac reprogramming currently unknown objective investigated possibility mir combo initiated direct cardiac reprogramming epigenetic mechanism methods results using quantitative polymerase chain reaction array found histone methyltransferases demethylases regulate trimethylation hkme epigenetic modification marks transcriptional repression changed mir combo treated fibroblasts accordingly global hkme levels downregulated mir combo treatment particular promoter region cardiac transcription factors showed decreased hkme revealed chromatin immunoprecipitation coupled quantitative polymerase chain reaction inhibition methyltransferases prc polycomb repressive complex pharmaceutical inhibition sirna reduced levels hkme induced cardiogenic markers rna protein level similarly mir combo treatment contrast knockdown demethylases kdma kdmb restored levels hkme blocked induction cardiac gene expression mir combo treated fibroblasts conclusions summary demonstrated removal repressive mark hkme essential induction cardiac reprogramming mir combo data highlight importance regulating epigenetic landscape cell fate conversion also provide framework improve technique
simple convenient easy use low cost platform rapid molecular detection virus designed implemented based convective polymerase chain reaction cpcr dipstick assay point care poc settings fully disposable chemically heated thermal processor developed heat capillary tube bottom fixed temperature amplification without need electrical power amplification achieved reagents capillary tube spontaneously repeatedly transported different temperature zones significantly shortens amplification time eliminating need controlled time domain temperature cycling rapid one step nucleic acid dipstick assay adopted facilitate detection amplification products eye instead instrumentation utility poc diagnostic system demonstrated detecting virus sensitivity tcid within min developed system particularly desired resource poor settings example developing countries outside centralized laboratories doctor offices homes relieve requirements laboratory facilities trained personnel elsevier rights reserved
large networks becoming widely used abstraction studying complex systems broad set disciplines ranging social network analysis molecular biology neuroscience despite increasing need analyze manipulate large networks limited number tools available task describe stanford network analysis platform snap general purpose high performance system provides easy use high level operations analysis manipulation large networks present snap functionality describe implementational details give performance benchmarks snap developed single big memory machines balances trade maximum performance compact memory graph representation ability handle dynamic graphs nodes edges added removed time snap process massive networks hundreds millions nodes billions edges snap offers different graph algorithms efficiently manipulate large graphs calculate structural properties generate regular random graphs handle attributes metadata nodes edges besides able handle large graphs additional strength snap networks attributes fully dynamic modified computation low cost snap provided open source library well module python also describe stanford large network dataset set social information real world networks datasets make publicly available collection complementary resource snap software widely used development benchmarking graph analytics algorithms
genetic characterisation linezolid resistant gram positive cocci multicentre study china reported previously study mechanism underlying resistance linezolid resistant isolates nine enterococcus faecalis one enterococcus faecium three staphylococcus cohnii isolates various levels resistance collected five hospitals across china nine faecalis isolates classified seven sequence types indicating linezolid resistant faecalis isolates polyclonal enterococci isolates reduced susceptibility linezolid mics mutation ribosomal protein three also mutation without multidrug resistance gene cfr rrna mutation three cohnii isolates highly resistant linezolid mics harboured cfr gene rrna mutation southern blotting indicated cfr gene three isolates resided different plasmids phk prm pra plasmid phk cfr gene integrated transposon plasmids prm pra cfr gene flanked two copies like insertion sequence indicating transferable form linezolid resistance conferred cfr gene conclusion emergence linezolid resistant gram positive cocci different regions china concern cfr gene rrna mutation contribute high level linezolid resistance cohnii mutations associated low level linezolid resistance enterococci elsevier international society chemotherapy rights reserved
herpesvirus saimiri hvs oncogenic herpesvirus produces micrornas mirnas cotranscription precursor mirna pre mirna hairpins immediately downstream viral small nuclear rnas snrna host cell integrator complex recognizes snrna end processing signal box generates ends hvs pre mirna hairpins identify novel box like sequence mirna box downstream hvs pre mirnas essential mirna biogenesis vivo knockdown rescue experiments confirmed end processing hvs pre mirnas also depends integrator activity interaction integrator hvs primary mirna pri mirna substrates contain mirna box confirmed coimmunoprecipitation situ proximity ligation assay pla developed localize specific transient rna protein interactions inside cells surprisingly contrast snrna end processing hvs pre mirna end processing integrator uncoupled transcription enabling new approaches study integrator enzymology
two genes encoding methionine adenosyltransferase sam saccharomyces cerevisiae metk corynebacterium glutamicum individually cloned pdxw shuttle vector escherichia coli glutamicum overexpressed coli glutamicum atcc genes overexpressed protein products showed activity methionine adenosyltransferase atcc metk overexpressed product metk showed enzyme activity could convert methionine adenosyl methionine sam however sam overexpressed atcc neither enzyme activity conversion sam methionine observed reverse transcription pcr analysis sds page showed sam transcribed translated glutamicum therefore sam mutant sam constructed codon optimization overexpressed atcc well transcribed translated could convert methionine sam finally sam metk individually overexpressed coli products sam metk purified characterized optimum activity enzymes found degrees sam metk similar atp quite different methionine results suggest sam metk useful developing glutamicum produce sam international union biochemistry molecular biology inc
kaposi sarcoma associated herpesvirus kshv undergoes replication independently via latent lytic pathways latent replication mediated latent associated nuclear antigen lana sole viral trans element genome maintenance replication according previous studies lana tethers kshv genome host chromosome latency interacts host factors ensure proper latent replication studies using southern blot experiments revealed consistently vector constructs containing viral terminal repeat region cis element latent replication replicated presence lana however southern blotting time intensive complicated technique requires multiple reagents addition limited ability detect slight changes replication efficiency different conditions owing relatively low sensitivity current study real time polymerase chain reaction method developed detecting transient kshv replication found capable identifying several factors affect latent replication technique provide useful tool detection kshv latent replication various conditions including overexpression viral cellular factors chemical stimulation elsevier rights reserved
human metabolic diseases typically network diseases holds multifactorial diseases metabolic syndrome type diabetes even single gene defect primary cause adaptive response entire network determines severity disease latter may differ individuals carrying mutation understanding adaptive responses human metabolism naturally requires systems biology approach modelling metabolic pathways microorganisms mammalian tissues yielded many insights qualitative well quantitative control regulation yet even well known pathway glycolysis precise predictions metabolite dynamics experimentally determined enzyme kinetics moderately successful present review compare kinetic models glycolysis three cell types african trypanosomes yeast skeletal muscle evaluate predictive power identify limitations understanding although models merits shortcomings also share common features example case independently measured enzyme kinetic parameters used input based lessons glycolysis discuss make best use kinetic computer models advance understanding human metabolic diseases
study phenanthro imidazol benzaldehyde investigated fluorescent dye reason spectroscopic properties different solvents thoroughly studied experimental data supported quantum chemical calculations using density functional theory measurements theoretical calculations showed dye characterized non monotonic solvatochromism strongly polar charge transfer excited state large stokes shift high fluorescence quantum yield high fluorescence lifetime simulations using autodock presented study showed conjugation concanavalin active site lys possesses highest probability binding affinity interaction dye concanavalin lectin investigated circular dichroism spectroscopy conventional fluorescence microscopy imaging candida albicans yarrowia lipolytica cells incubated concanavalin demonstrated results show dye photostable low molecular weight fluorescent probe emits blue fluorescence results study implications designing protein conjugate valuable alternative commercial probes designed cellular labeling biological biomedical research calculated logp value together logbcf show protein conjugate valuable alternative commercial probes designed cellular labeling biological biomedical research elsevier rights reserved
biochemical reaction underlying drug metabolism depends individual gene drug interactions groups genes interacting together based high throughput genetic approach sought identify set covariant single nucleotide polymorphisms predictive interindividual tacrolimus tac dose requirement variability tac blood concentrations tac kidney transplant recipients repeatedly monitored transplantation given high dimension genomic data comparison low number observations high multicolinearity among variables gene variants developed original predictive approach integrates ensemble variable selection strategy reinforce stability variable selection process multivariate modeling predictive models explained total variability tac per dose maximum gene variants value permutation test models included molecular networks drug metabolism oxidoreductase activities multidrug resistant abcc transporter found stringent model finally identified intronic variant gene encoding slca drug transporter key gene involved tac metabolism confirmed independent validation cohort
studied date palm phytochelatin synthase type pdpcs catalyzes cytosolic synthesis phytochelatins pcs heavy metal binding protein plant cells gene encoding pdpcs pdpcs consists exons introns encodes protein amino acids pcs gene history studied using notung phylogeny evolution gene loss several lineages predicted including proteobacteria bilateria brassicaceae addition eleven gene duplication events appeared toward interior nodes reconciled tree four gene duplication events appeared toward external nodes latter sequences belong species second copy pcs suggesting gene evolved subfunctionalization pdpcs gene expression measured seedling hypocotyls exposed using quantitative real time polymerase chain reaction qpcr pdpcsl overexpression evidenced dactylifera seedlings exposed metals suggesting pdpcsl gene functional implication enzyme metal detoxification mechanisms additionally structure pdpcs predicted using homologue nostoc cyanobacterium nspcs template discovery studio pymol software analyses allowed identify phytochelatin synthase type enzyme date palm pdpcs via recognition key consensus amino acids involved catalytic mechanism propose hypothetical binding catalytic site additional substrate binding cavity
fact molecule mediate signals cell proliferation apoptosis prompted perform systematic investigation antigen expression embryonal tissues proliferation differentiation stages first targeted foetal human intestinal cryptae cells positive results epidermis dynamic epithelium constantly renewed throughout life basal layer attached basement membrane contains dividing cells skin cells move layer undergo differentiation ending formation terminally differentiated anucleate cell called squame intriguing find cells basal layer express antigen investigated immunohistochemical expression antigen paraffin embedded tissue samples representing epidermis epidermal buds foetuses spontaneous abortion weeks gestation respectively using monoclonal antibody ncl northern blotting analysis additionally performed results showed epithelial cells epidermis developing skin express antigen expression epithelial cells higher cases hormonal administration normal gestation similar positive reaction involved epidermal buds associated development skin appendages northern blots tissue sections using cdna probe detected mrnas molecular mass variety similarly positive control cell line hut
backgroundudp glucuronosyltransferase family polypeptide ugtb encodes enzyme modifies carcinogens steroids xenobiotics anticancer chemotherapeutic agents glucuronidation pediatric cancers much sensitive anticancer agents adult cancers aim study therefore examine effects ugtb deletion polymorphism prognosis pediatric cancer methodsa total dna samples collected children malignant disease ugtb copy number variant determined polymerase chain reaction survival analysis carried analyze effects ugtb deletion relapse free rate lymphoblastic non lymphoblastic malignancy resultsugtb deleted children lymphoblastic malignancy children non lymphoblastic malignancy moreover non lymphoblastic malignancy children without ugtb deletion polymorphism significantly higher relapse rates deletion polymorphism remained significant adjustment age sex underlying disease advanced stage adverse events significant interaction ugtb deletion non lymphoblastic malignancy early subgroup stages standard intermediate risk children without ugtb deletion polymorphism higher relapse rate children advanced disease log rank test conclusionsugtb deletion polymorphism may improve relapse free rate children non lymphoblastic malignancy
generation transgenic animals gain function mutation commonly achieved procedures based random dna integration resulting transgenic founder lines unique reproducible variable expression patterns contrast targeted integration transgenes predetermined neutral genomic position solves inadequacies random integration methods however homologous recombination mouse embryonic stem cells escs currently requires careful design targeting vector laborious procedure identify clones correct insertion event introduce feasible strategy employs heterozygous double fluorescent reporter esc line simple identification knock event via detection endogenous fluorescence expression following positive selection using antibiotics system offers second selection step identify targeted clones loss one two fluorescence reporters lieu time consuming southern blotting pcr analysis routinely applied conventional targeting experiments moreover method allows simple detection chimerism negating need appropriate coat colour combinations enables early detection germline transmission fluorescence reporter expression neonates
aim recent studies demonstrated netrin plays vital role bone metabolism previous studies shown osteoblasts produce netrin affects osteoclast differentiation however role netrin osteoblast differentiation well understood study explored roles netrin osteoblasts materials methods quantitative reverse transcriptase polymerase chain reaction qpcr rna interference netrin receptors generation netrin plasmid transfection plasmids cell proliferation assay performed results osteoblast differentiation ascorbic acid netrin expression significantly decreased gene expression related osteoblast differentiation regulated netrin treatment also found osteoblast differentiation bone morphogenetic protein bmp inhibited presence recombinant netrin forced expression bmp netrin significantly decreased alkaline phosphatase expression hand uncb neogenin belong netrin receptors expressed osteoblasts moreover alkaline phosphatase expression significantly decreased knockdown combination two receptors among receptors conclusion netrin involved regulation osteoblast differentiation
positive strand rna genomes function mrna viral protein synthesis fully reliant host cell translation machinery competing cellular protein translation apparatus needs ensure production viral proteins also stifles host innate defense present study showed porcine reproductive respiratory syndrome virus prrsv whose replication takes place cytoplasm imprisoned host cell mrna nucleus suggests novel mechanism enhance translation prrsv genome prrsv nonstructural protein nsp beta identified nuclear protein playing role host mrna nuclear retention subversion host protein synthesis sap saf acinus pias motif identified nsp beta consensus sequence lqxxlxxxgl situ hybridization unveiled sap mutants unable cause nuclear retention host cell mrnas suppress host protein synthesis addition sap mutants reverted prrsv nsp beta mediated suppression interferon ifn production ifn signaling tnf alpha production pathway using reverse genetics series sap mutant prrs viruses vka vla vga vla generated mrna nuclear retention observed vla vla infections importantly vla vla suppress ifn production arteriviruses mrna nuclear accumulation also observed ldv nsp beta shfv nsp beta eav nspl exceptional block host mrna nuclear export
numerous studies examined role micrornas mirnas cell homeostasis cardiovascular disease markedly improved understanding rna biology general potential role mirnas atherosclerosis atherosclerosis several mirnas mir mir mir others identified relevant mediators pathological processes including regulation cholesterol lipid biosynthesis lipoprotein metabolism cholesterol efflux also immune responses endothelial cell biology vascular function understanding specific roles mirnas distinct cell types involved atherosclerosis initiation progression resolution may reveal new intervention strategies prevention treatment atherosclerotic cardiovascular disease elsevier ltd rights reserved
microsporidia group intracellular parasites characterized highly reduced compact genomes presence high gene density several consequences microsporidian genomes including high frequency overlap transcripts adjacent genes phenomenon apparently widespread microsporidia strongly correlated gene density however analyses date focused one transcripts many loci unclear diverse pool transcripts given locus may address question characterized initiation termination points transcripts gene dense regions antonospora locustae spores using conventional fluorescence based race pcr procedures parallel investigated abundance nature transcripts along region surrounding actin locus locustae using northern blotting race pcr previously characterised est sequences overall confirmed previous suggestions transcripts locustae spores overlap downstream gene end untranslated regions short overlap rare fluorescence based race pcr show transcription genes initiates single position whereas loci analyzed race polyadenylate mrna several sites finally identified presence previously unsuspected large transcripts locustae spores transcripts found overlap four open reading frames different strands adding novel layer complexity mrna transcription microsporidian species
chrysanthemate insecticides like bioallethrin natural pyrethins related pyrethroids subjected extensive hydrolytic oxidative degeneration mammalian metabolism leading complex series metabolites partially conjugated finally eliminated urine major oxidation products chrysanthemic acid cis trans chrysanthemumdicarboxcylic acid cis trans cdca synthesized structures established nuclear magnetic resonance spectrometry nmr mass spectrometry diastereoselective separation high performance liquid chromatography hplc capillary gas chromatography analytical method extraction identification cdca human urine developed quantitation gas chromatography electron impact mass spectrometry limit detection cis cdca trans cdca test applicability presented method urine samples humans exposed bioallethrin investigated urinary peak excretion trans cdca occurred within exposure elsevier science ireland ltd rights reserved
diversity non ribosomal peptide polyketide secondary metabolism facilitated interactions biosynthetic domains discrete monomer loading cognate tailoring enzymes oxidation halogenation enzymes cooperation peptidyl carrier proteins flavin dependent enzymes offers specialized strategy monomer selectivity oxidization small molecules within complex cellular milieu effort study process developed fluorescent probes selectively label aerobic flavin dependent enzymes report preparation implementation tools label oxidase monooxygenase halogenase flavin dependent enzymes
dietary polyamines pas putrescine put spermidine spd spermine spm participate array roles human metabolism nevertheless physiological conditions undesirable meat meat products among important sources pas human nutrition mainly spm usual contents put spd spm fresh beef pork respectively current information changes pas meat storage corresponds put formation bacterial activity mainly pseudomonads enterobacteriaceae however data spd spm changes meat chill storage inconsistent culinary processing meat probably change spd spm levels put formed different meat products relation microbial population raw materials used hygienic level manufacturing process spd spm contents seem remain stable processing non fermented meat products decrease dry cured ham ripening put contents increase commonly dry spontaneously fermented sausages however contents several hundreds extraordinary starter cultures usually able decrease put formation considerably spd spm contents dry fermented sausages comparable levels typical fresh meat data spd spm changes ripening storage inconsistent decrease polyamines storage period usually reported elsevier ltd rights reserved
tilapia generally known warm water fish widely distributed across tropics particular maternal mouth brooding tilapia genera saroterodon oreochromis successfully adapted wide range water bodies plastic feeding habits wide tolerance varying environmental conditions trewavas nile tilapia oreochromis niloticus occurs almost rivers lakes ethiopia important commercial fish constituting commercial catch capture fishery country reyntjens wudineh investigations fatty acid composition lipid quality fishes well documented mainly marine freshwater systems temperate regions puustinen ahlgren studies broadly examined either ecological point view relation human health medical point view two omega polyunsaturated fatty acids pufa eicosapentaenoic acid epa omega docosahexaenoic acid dha omega common fish fish oil several biochemical effects human metabolism fish oil rich epa dha lower blood lipid reduce risk getting coronary heart disease mediorus ecological view point important know origin important pufa fish animals higher trophic levels information transfer fatty acids lower trophic levels beginning phyto plankton obtained quantifying levels important fatty acids across food chain fatty acids serve biomarkers elucidate transfer conversion individual fatty acids napolitano marine fish reported higher pufa content freshwater counterparts napolitano however ahlgren references therein think difference marine freshwater fish related factors feeding type fish rather difference salinity earlier work also found tropical fish equally important temperate fish terms pufa content zenebe data fatty acid content tropical fish scarce mostly limited fish south america clement lovell andrade earlier study reported fatty acid composition niloticus collected rift valley lakes located lower altitudes zenebe study report fatty acid composition fish taken mainly highland lakes located outside rift system ethiopia information provide broad comparisons comprehensive data fatty acid contents niloticus collected wild ethiopian lakes
background small non coding rnas ncrnas important regulators gene expression eukaryotes previously micrornas mirnas pirnas identified silkworm bombyx mori furthermore ncrnas intermediate size systematically identified silkworm results performed systematic identification analysis small rnas associated bombyx mori argonaute bmago protein using rip seq identified various types small ncrnas associated bmago ncrnas showed multimodal length distribution three peaks similar similar similar included trna transposable element rrna snorna snrna derived small rnas well mirnas pirnas trna derived fragments trfs found extremely high abundance accounted bmago associated small rnas northern blotting confirmed many trfs expressed regulated bmnpv infected cells implying trfs play prominent role binding bmago bmnpv infection additional evidence suggested potential cleavage sites anti codon psi loops trnas derived small rnas pirnas also accounted significant proportion bmago associated small rnas suggesting bmago could involved maintenance genome stability suppressing activities transposons guided small rnas finally northern blotting also used confirm bombyx rrna derived small rnas demonstrating various novel small rnas exist silkworm conclusions using rip seq method combination northern blotting identified various types small rnas associated bmago protein including trna rrna snorna snrna derived small rnas well mirnas pirnas findings provide new clues future functional studies role small rnas insect development evolution
although cas mediated genome editing proven powerful genetic tool eukaryotes application bacteria limited inefficient targeting repair application archaea yet reported describe development cas mediated genome editing tool allows facile genetic manipulation slow growing methano genic archaeon methanosarcina acetivorans introduction insertions deletions homology directed repair remarkably efficient precise occurring frequency approximately relative transformation efficiency desired mutation found essentially transformants examined target activity observed also observed multiple single guide rnas could expressed transcript reducing size mutagenic plasmids simultaneously simplifying design cas mediated genome editing reduces time needed construct mutants half allows simultaneous construction double mutants high efficiency exponentially decreasing time needed complex strain constructions furthermore coexpression non homologous end joining nhej machinery closely related archaeon methanocella paludicola allowed efficient cas mediated genome editing without need repair template nhej dependent mutations included deletions ranging length appear occurred regions naturally occurring microhomology combination homology directed repair dependent nhej dependent genome editing tools comprises powerful genetic system enables facile insertion deletion genes rational modification gene expression testing gene essentiality
current goal molecular biology identify transcriptional networks regulate cell differentiation however identifying functional gene regulatory elements challenging context developing tissues material limited cell types mixed identify regulatory sites sex determination subjected sertoli cells mouse fetal testes dnasei seq chip seq hkac dnasei seq identified putative regulatory sites around genes enriched sertoli pregranulosa cells however active enhancers marked hkac enriched proximal sertoli enriched genes sequence analysis identified putative binding sites known novel transcription factors likely controlling sertoli cell differentiation validation approach identified novel sertoli cell enhancer upstream used drive expression transgenic reporter sertoli cells work furthers understanding complex genetic network underlies sex determination identifies regions potentially harbor non coding mutations underlying disorders sexual development
background investigated potential role interleukin family members induction inflammatory responses human colonic subepithelial myofibroblasts semfs methods expression inflammatory cytokines leukemia inhibitory factor lif matrix metalloproteinases mmp mmp evaluated enzyme linked immunosorbent assay northern blotting activation mitogen activated protein kinase mapk assessed immunoblotting results significantly enhanced lif mmp mmp secretion effects relatively stronger induced effects modest compared induced augmented beta induced secretion lif mmp mmp similar augmentation also observed tumor necrosis factor tnf alpha induced cytokine mmp secretion rapidly induced phosphorylation extracellular signal regulated kinases erk mapks jun terminal kinase jnk early min stimulation inhibitors erk mapk significantly reduced induced lif mmp mmp secretion conclusions among family members strongly stimulate human colonic semfs inducing inflammatory responses
cardiac failure widely associated increase glucose utilization aim study identify factors mechanistically bridge link hyperglycemia heart failure screened hybrid mouse diversity panel hmdp substrate specific cardi omyocyte candidates based heart transcriptional profile circulating nutrients next utilized vitro model rat cardiomyocytes demonstrate gene expression changes direct response substrate abundance overlaying candidates interest separate hmdp study evaluating isoproterenol induced heart failure chose focus gene trpinp cardiomyocyte glucose utilization specific factor trpinp gene knockdown rat cardiomyocytes reduced expression protein abundance key glycolytic enzymes resulted reduction glucose uptake glycogen content cardiomyocytes stimulated isoproterenol furthermore reduction effectively blunted capacity glucose isoprotereonol synergistically induce hypertrophic gene expression cell size expansion conclude trpinp serves regulator cardiomyocyte glycolytic activity consequently regulate hypertrophic response context elevated glucose content new noteworthy apply novel method screening transcripts based substrate specific expression pattern identify trpinp induced cardiomyocyte glucose utilization factor show reducing expression gene could effectively blunt hypertrophic response context elevated glucose content
nuclear magnetic resonance spectroscopy exploited study metabolic characteristics phenotype genetic disorders taking advantage unique characteristics technique first application metabolic profiling diagnosis therapeutic monitoring vitro demonstrates exceptional diversity metabolites detected nmr resulted new interest significant metabolites largely ignored previously techniques detect betaine creatine moreover previously unknown genetic disorders detected characterised nmr technique effectively exploited metabolic profiling mutation models yeast mice leading prominent role development large scale metabolomic profiling link genomic information phenotype second application magnetic resonance spectroscopy mrs exploits unique possibility studying human metabolism vivo permits intracellular rather extracellular metabolic profiling possible detect precise diagnostic metabolites vivo investigators able link clinical status cellular biochemistry sometimes questioning clinical value extracellular plasma metabolite measurements thus claims made brain phenylalanine concentrations match closely clinical status patients phenylketonuria studies vivo also led new diagnoses disorders creatine synthesis transport highlighting new category brain syndromes future applications nmr cautiously considered critically dependent continued improvement resolution sensitivity turn generated developments magnet design higher fields
number recent studies begun explore new exciting area interaction gut microbiome renal physiology particular multiple studies focused role microbially produced short chain fatty acids generally thought promote health review focus known date regarding influence microbiome renal function emphasis cell biology physiology clinical implications short chain fatty acids short chain fatty acid receptors clear microbe host interactions exciting ever expanding field implications view diseases hypertension acute kidney injury chronic kidney disease however important recognize although potential promise area extremely enticing edge new field
genomic instability resultant defective dna repair mechanisms fundamental hallmark cancer poly adp ribose polymerase parp proteins catalyze polymerization poly adpribose covalent attachment proteins phylogenetically ancient form protein modification parps play role base excision repair homologous recombination non homologous end joining discovery loss parp activity cytotoxic effects cells deficient homologous recombination sparked decade translational research efforts culminated fda approval oral parp inhibitor clinical use patients ovarian cancer defective homologous recombination five parp inhibitors late stage development clinical trials seeking expand understanding targeted therapies dna repair defects human cancer review examines cell biology parp discovery synthetic lethality deficiency clinical development parp inhibitors role parp inhibitors ongoing clinical trials clinical practice elsevier ltd rights reserved
human papillomavirus hpv causes cervical cancer women worldwide currently prevented vaccines based virus like particles vlps however vaccines certain limitations availability developing countries largely due elevated costs concerning highest burden disease resource poor countries development improved mucosal cost effective vaccine necessity alternative vlps capsomeres shown highly immunogenic used vaccine candidate furthermore coupling adjuvant like escherichia coli heat labile enterotoxin subunit ltb antigen increase immunogenicity reduce costs related separate administration adjuvants study demonstrates expression two pentameric proteins modified hpv xcysm ltb fusion protein tobacco chloroplasts homoplasmy transplastomic plants confirmed southern blotting western blot analysis showed ltb fusion protein properly expressed plastids recombinant protein estimated accumulate total soluble protein proper folding display conformational epitopes ltb fusion protein confirmed ganglioside binding assay antigen capture elisa respectively however transplastomic lines showed chlorosis male sterility growth retardation persisted ensuing four generations studied nevertheless plants reached maturity produced seeds pollination wild type plants taken together results pave way possible development low cost adjuvant coupled vaccine potentially improved immunogenicity cervical cancer
physico chemical changes may tendency accumulate various organs estuarine organisms especially fish may turn enter human metabolism consumption causing serious hazards hence present study carried determine physico chemical characteristics water ichthyofauna arasalar estuary southeast coast india period year september august environmental parameters temperature salinity silicate nitrate phosphate observed department zoology rajah serfoji goverment college thanjavur tamil nadu india period study air temperature varied degrees surface water temperature also varied degrees monthly mean values hydrogen ion concentration water varied salinity water varied parts per thousand dissolved oxygen arasalar estuary varied total phosphorus varied nitrate varied silicate content varied totally fishes collected belonging orders families mystus gulio found dominant species study area
report microfluidic droplet based approach enabling measurement chemical reactions individual enzyme molecules application single molecule counting immunoassay microfluidic device used generate manipulate droplets rates per second orders magnitude faster previously reported femtodroplets produced device used encapsulate single biomolecular complexes tagged reporter enzyme small volume enables fluorescent product single enzyme molecule detected within min chip incubation prototype system validated detection biomarker prostate cancer buffer concentration work demonstrates highly flexible sensitive diagnostic platform exploits extremely high speed generation monodisperse femtoliter droplets counting individual analyte molecules
factors dramatically influencing thermal comfort usually involve air temperature radiant temperature air humidity air velocity clothes insulation metabolic rate however special conditions altitude environment air pressure taken account exposure altitude tends produce deterioration human heat diffusion performance rate convective heat transfer decreases rate convective heat transfer increases altitude energy balance human body environment different normal conditions experiments thermal perception test persons person times observed subjective questionnaire simulated hypobaric chamber air parameters controllable temperature set degrees barometric conditions set atm simulated hypobaric conditions corresponding altitude respectively experiments solved metabolic rate raised pressure drop measured pmv differed actual thermal sensation votes hypobaric conditions moreover falling barometric pressure leads decline alveolar oxygen variety adaptive physiological processes oxygen delivery human metabolism thermoregulatory responses well thermal perception change however present thermal sensation models built normal environment many divergences conclusions combined experiments article builds thermal sensation estimating model hypobaric conditions principal component analysis purpose study make clear whether hypobaric exposure affect people thermal sensation maybe helpful establish indoor thermal comfort criterion hypobaric environment
enzyme squalene synthase catalyzes reductive dimerization two farnesyl diphosphate fpp molecules squalene key precursor sterol triterpene biosynthesis full length cdna encoding squalene synthase designated tesqs isolated taxus cuspidata kind important medicinal plants producing potent anti cancer drug taxol full length cdna tcsqs contained open reading frame orf encoding polypeptide amino acids bioinformatic analysis revealed deduced tcsqs protein high similarity plant squalene synthases predicted crystal structure similar class isoprenoid biosynthetic enzymes southern blot analysis revealed one copy tcsqs gene genome cuspidata semi quantitative pcr analysis northern blotting analysis showed tcsqs expressed constitutively tested tissues highest expression roots promoter region tcsqs also isolated genomic walking analysis showed several cis acting elements present promoter region results treatment experiments different signaling components including methyl jasmonate salicylic acid gibberellin revealed tesqs expression level treated cells prominent diversity control consistent prediction results tcsqs promoter region plantcar database
objectives investigate characteristics nine carbapenem non susceptible escherichia coli isolates collected taiwanese university hospital methods genetic relatedness analysed pfge beta lactamases characterized pcr isoelectric focusing outer membrane proteins transcripts investigated sds page northern blotting cloning experiments performed investigate role membrane permeability carbapenem non susceptibility results nine isolates found produce cmy ampc enzyme ctx type extended spectrum beta lactamase esbl shv esbl imp type metallo beta lactamase alone combination isolates revealed decrease transcription protein expression ompc susceptibility carbapenems restored one isolate introducing cloned ompc gene pfge revealed genetic diversity among nine isolates patients isolates treated carbapenems six patients extended spectrum cephalosporins five patients isolation conclusions study suggests decreased susceptibility carbapenems coli hospital might arise stepwise accumulations multiple drug resistance determinants different clones
background aims sexual differences transcript levels various genes including hepatic isoforms cytochrome extensively studied expression sexual dimorphic genes quantified northern blotting nuclear run assays reverse transcriptase polymerase chain reaction pcr methods using numerous housekeeping genes normalize results earlier reports apparently assumed internal controls sex independent studied sex differences expression levels seven different commonly used housekeeping genes methods used quantitative semiquantitative pcr monitor levels hepatic mrnas intact hypophysectomized male female rats results observed sex dependent expression commonly used housekeeping genes tubulin cyclophilin tyrosine aminotransferase beta actin glyceraldehyde phosphate dehydrogenase one unconventional housekeeping gene hypoxia inducing factor alpha livers intact male female rats exception glyceraldehyde phosphate dehydrogenase female predominant five genes found expressed significantly higher concentrations livers intact male rats similar findings hypophysectomy eliminates sexual dimorphisms cytochromes expression five housekeeping genes examined cylophilin tyrosine aminotransferase glyceraldehyde phosphate dehydrogenase beta actin lost sex dependent expression following pituitary ablation conclusionds data suggest expression levels commonly measured housekeeping genes structural metabolic constant rather directly indirectly regulated sex dependent hormones compromising application normalizing controls blackwell publishing asia pty ltd
wine originally emerged serendipitous mix chemistry biology microorganisms played decisive role ancient fermentations current monitored industrial processes winegrowers winemakers continuously changing practices according scientific knowledge advances new enology direction emerging aiming blend complexity spontaneous fermentations industrial safety monitored fermentations context wines distinctive autochthonous peculiarities great acceptance among consumers causing important economic returns concept terroir far rural term conceals wide range analytical parameters basis knowledge based enology trend sense biological aspect soils underestimated years actually contains great microbial diversity soil associated microbiota described determinant chemistry nutritional properties soils also health yield quality grapevine additionally recent works describe soil microbiome reservoir grapevine associated microbiota contributor final sensory properties wines understand crucial roles microorganisms entire wine making process must understand ecological niches population dynamics relationships microbiome vine health microbiome wine metabolome critical steps designing precision enology practices purpose current metagenomic techniques expanding laboratories food industry review focuses current knowledge vine wine microbiomes emphasis biological roles technical basis next generation sequencing pipelines overview molecular informatics tools included new directions proposed highlighting importance omics technologies wine research industry
carcinogenesis driven accumulation mutations genetic lesions leads activation oncogenes inactivation tumor suppressor genes however molecular mechanisms expression genes regulated pancreatic cancer remains unclear study investigated regulatory effects microrna methylation expression ras pten genes pancreatic cancer cells protein mirna levels measured western blotting northern blotting respectively xenograft pancreatic tumor models established inoculating bxpc capan panc tumor cells athymic mice disparate level kras pten dnmts dicer proteins well let mir mir mir mirna observed bxpc capan panc cells knockdown dicer expression bxpc panc cells resulted significant increases kras pten dnmts protein levels significant decreases mir mir let mir expression knockdown dicer expression capan cells significantly increased pten expression significantly decreased mir mir expression effects pten dnmts let mir expression knockdown dicer expression significantly inhibited xenograft bxpc tumor growth promoted xenograft panc tumor growth contrast knockdown dicer expression effect xenograft capan tumor growth study suggested different pancreatic cancer cell lines exhibited obvious discrepancies gene expression profiles implying different molecular mechanisms involved carcinogenesis pancreatic cancer subclasses study highlighted importance personalized therapy elsevier inc rights reserved
plate filter broth mating techniques assessed range phs using three lactococcus lactis donor strains one erythromycin resistance marker two tetracycline resistance markers located transferable genetic elements one lactis recipient strain transconjugants confirmed using antibiotic selection tests determine mics pcr assays detect corresponding marker genes dna fingerprinting pulsed field gel electrophoresis pfge southern blotting horizontal gene transfer hgt rates varied ranging general trend observed plate filter broth independent data suggests standardisation methodologies used assess hgt warranted would provide meaningful assessment ability commensal bacteria different environments transfer relevant markers elsevier rights reserved
vector borne diseases vbd major importance human animal health recent years vbd emerging emerging many geographical areas alarming new disease threats economic losses precise diagnosis many diseases still remains major challenge lack comprehensive data available accurate reliable diagnostic methods conducted systematic depth review former current upcoming techniques employed diagnosis vbd
aluminium toxicity worldwide problem agricultural practice based evidence resistance may inducible process rice one resistant crops gene transcriptional responses investigated two contrasting rice cultivars resistant versus sensitive using differential display reverse transcription pcr ddrt pcr combination northern blotting analysis total genes identified differentially expressed five previously known regulated others novel genes among regulated genes four encode ion transporters two involved signal transduction five synthesis cysteine metallothionein could members potentially involved adaptation resistance hand transcription genes strongly inhibited stress genes associated cytoskeletal dynamics metabolism could possible targets associated toxicity differentially expressed genes may represent candidates function responses results suggest transcriptional level cytoskeletal disruption may associated toxicity whereas ion transport sulphur metabolism could play major roles adaptation tolerance rice
cdna clone encoding amphioxus fatty acid binding protein like amphifabpl protein isolated gut cdna library branchiostoma belcheri contained open reading frame corresponding deduced protein amino acids predicted molecular mass approximately kda phylogenetic analysis showed amphifabpl fell outside vertebrate clade fatty acid binding proteins fabps positioned base chordate lineage almost equally homologous various vertebrate fabps suggesting may archetype vertebrate fabps northern blotting situ hybridization analyses demonstrated amphifabpl expressed hepatic caecum hind gut although much lower level also present endostyle ovary testis addition whole mount situ hybridization revealed amphifabpl initially expressed posterior two thirds primitive gut including mid gut hepatic caecum form later day larvae expression pattern closely similar fabp fabp genes vertebrates supporting hypothesis hepatic caecum amphioxus homologous vertebrate liver
papaya carica papaya relevant tropical crop physico chemical changes take place quickly consequence activation biochemical pathways nova synthesis several proteins thus order information changes gene expression ripening papaya transcripts pulp unripe ripe fruit profiled differential display pcr ddrt pcr seventy transcript derived fragments tdfs isolated gels amplified pcr differential expression papaya genes confirmed reverse northern blotting twenty nine positively cloned tdfs sequenced putatively identified homology search ten genes downregulated ripening udp glucose glucosyltransferase alpha importin rnase inhibitor like protein syntaxin protein identified among regulated genes carboxylesterase integral membrane yip family protein glycosyl hydrolase family like protein endopolygalacturonase considering relatedness papaya quality fragments genes potentially implicated carbohydrate metabolism pulp softening may considered interest studies according results differential display feasible approach investigate differences gene expression fruit ripening provide interesting information fruits whose genomic data scarce case papayas elsevier rights reserved
background second two review parts aiming describing major physiological roles fatty acids well applications specific conditions related human health results review included current literature published pubmed march humans fatty acids principle energy substrate structural components cell membranes phospholipids second messengers fatty acids also ligands nuclear receptors affecting gene expression longer chain polyunsaturated fatty acids pufa including eicosapentaenoic acid epa docosahexaenoic acid dha arachidonic acid precursors lipid mediators eicosanoids prostaglandins leukotrienes thromboxanes resolvins neuroprotectins lipid mediators produced epa dha pufa mainly found oily fish considered inflammation resolving thus fish oil characterised antiinflammatory recommendations epa plus dha intake oily fish vary day dietary reference values fat vary nutrition bodies mainly agree low total saturated fat intake existing literature supports protective effects pufa opposed pufa saturated fat maternal offspring health cardiovascular health insulin sensitivity metabolic syndrome cancer critically ill patients immune system disorders conclusion fatty acids involved multiple pathways play major role health investigation nutrigenomics approach effects biocompounds health disease development imperative highlight importance environmental modifications disease outcome
dof dna binding one finger plays important role regulating metabolism cereals order validate role regulation nitrogen use efficiency nue photosynthetic efficiency finger millet aeuro race pcr performed obtain characterize full length dof genes high low grain protein finger millet genotypes full length dof orfs long similar amino acids containing characteristic dof domain comparison ecdof protein sequences dof cereals revealed high sequence similarity dof rice southern hybridization carried using probe developed region encoding highly variable terminal region ecdof showed presence four copies dof gene finger millet might explain high nue photosynthetic performance finger millet since genes involved metabolism regulated diurnally play crucial roles determining grain protein content grain filling diurnal expression ecdof assessed two finger millet genotypes differing grain protein content respectively found ecdof exhibited diurnal regulation peak differential pattern expression early phasing late phasing differential expression dof might alter regulation genes involved metabolism affecting grain protein composition finger millet genotypes
gene trapping powerful method identifying novel genes analyzing functions however difficult select trapped genes basis function identify genes regulated transcription factors important mesodermal formation selected trapped clones infection adenoviral vectors expressing pax brachyury foxa among trapped genes seven seemed controlled transcription factors first screening trapped genes identified race northern blotting revealed expressions three trapped genes regulated transcription factors expression patterns hpi gamma implicated functional relationships foxa formation notochord neural tube furthermore wtap mutant mice derived trapped clone showed defects mesendoderm formation results indicate trapped clones could selected effectively using transcription factors elsevier inc rights reserved
october zika virus zikv outbreak brazilian ministry health moh response brazilian society medical genetics established task force sbgm zetf study phenotype infants born microcephaly due zikv congenital infection delineate phenotypic spectrum newly recognized teratogen study based clinical evaluation neuroimaging infants born period july march registered sbgm zetf infants significant findings neuroimaging consistent zikv congenital infection confirmed zikv igm csf recognizable phenotype microcephaly anomalies shape skull redundancy scalp consistent fetal brain disruption sequence fbds present infants often subtle addition features consistent fetal immobility ranging dimples distal hand finger contractures feet malpositions generalized arthrogryposis present infants cases milder microcephaly even normal head circumference less distinctive findings detailed observation dysmorphic neurologic features infants provides insight mechanisms timings brain disruption sequence developmental anomalies may occur prenatal infection zikv
plantazolicin pzn polyheterocyclic alpha alpha dimethylarginine containing antibiotic harbors remarkably specific bactericidal activity toward strains bacillus anthracis causative agent anthrax previous studies demonstrated genetic deletion adenosyl methionine dependent methyltransferase pzn biosynthetic gene cluster results formation desmethylpzn devoid antibiotic activity describe vitro reconstitution mutational analysis ray crystallographic structure pzn methyltransferase unlike known small molecule methyltransferases act upon diverse substrates vitro pzn methyltransferase uncharacteristically limited substrate scope functions desmethylpzn close derivatives crystal structures two related pzn methyltransferases solved angstrom bacillus amyloliquefaciens angstrom bacillus pumilus reveal deep narrow cavity putatively functioning binding site desmethylpzn narrowness cavity provides framework understanding molecular basis extreme substrate selectivity analysis panel point mutations methyltransferase amyloliquefaciens allowed identification residues structural catalytic importance findings understanding one set orthologous enzymes involved thiazole oxazole modified microcin biosynthesis rapidly growing sector natural products research
background hepatitis virus hbv dna sequence data thousands samples present public sequence databases publicly available date multiple sequence alignments containing full length subgenomic fragments per genotype available alignments useful many analysis applications including data mining phylogenetic analyses results issuing query hbv sequence data genbank public database downloaded sequences full length subgenomic sequences genotyped submitters sequences placed multiple sequence alignment genotype genotype sequences according results offline blast searches custom reference library full length sequences curation performed improve alignment conclusions algorithm described paper generates nine hbv genotypes multiple sequence alignments contain full length subgenomic fragments alignments updated new sequences become available online public sequence databases alignments available http hvdr bioinf wits alignments
rhizobia collectively comprised gram negative soil bacteria ability form symbiotic nitrogen fixing root stem nodules association leguminous plants taxonomy bacteria continually state flux large part due rapid development refined molecular biology techniques isolation characterization new often different legumes nodulating bacteria variety plant hosts resulted naming many new rhizobial species update taxonomy legume nodulating bacteria describe newly identified rhizobia capable nodulating edible legumes legume trees one bacterial species known nodulate common bean worldwide rhizobium leguminosarum phaseoli one species nodulated faba bean rhizobium leguminosarum viciae two species nodulated soybean bradyrhizobium japonicum rhizobium fredii today nearly species defined capable nodulating common bean soybean cowpea chickpea peanut lentils faba bean pea respectively recent use whole genome based taxonomy genomotaxonomy surely change define important group bacteria identification several rhizobial species able nodulate fix nitrogen edible legumes may enhance production crops compensate worldwide deficiencies human nutritional needs future
background integrate verified signals previous genetic association studies gene expression pathway analysis discovery new candidate genes signaling networks relevant rheumatoid arthritis method rna sequencing rna seq based expression analysis genes previously verified associated loci performed blood cells newly diagnosed non treated patients patients treated healthy controls differentially expressed genes sharing similar expression pattern treated untreated sub groups selected pathway analysis set connector genes derived pathway analysis tested differential expression initial discovery cohort validated blood cells patients healthy controls results qualifying genes selected pathway analysis grouped two evidence based functional networks containing additional connector molecules expression genes corresponding connector molecules tested initial rna seq data differences expression erbb thop similar treated non treated patients additional nine genes differentially expressed least one group patients compared healthy controls erbb thop expression profile successfully replicated rna seq data peripheral blood mononuclear cells healthy controls non treated patients independent collection samples conclusion integration rna seq data findings association studies consequent pathway analysis implicate new candidate genes erbb thop pathogenesis
aim number adipocytokines suggested involved disruption glucose metabolism also development various diabetic complications attempted identify analyze additional adipocytokines better understanding roles adipocytes adipocytokines methods oligo capping signal sequence trap developed laboratory screening cdnas secretory proteins used sreen cdnas expressed mouse white adipose tissue profiles genes identified mice cultured cells investigated northern blotting luciferase assay results cdna fragment interferon stimulated gene isgb obtained search northern blot analysis revealed isgb highly expressed white adipose tissue interferon ifn alpha shown induce isgb expression adipose tissue mice vivo also preadipocyte cell line vitro level isgb higher mature adipocytes preadipocytes promoter analysis demonstrated upstream transcription initiation site isgb mrna contain strong promoter activity interferon stimulated response elements isres present within upstream region conclusion isgb additional candidate adipocytokine induced express adipose tissue interferon
trace chemical contaminants generated human metabolism major source contamination spacecraft crew module research types generation rates pollutants human metabolism determined chinese diets expired air skin gas sweat subjects analyzed different exercise states simulated module exercise states designed according basic activities orbit astronauts qualitative quantitative analyses contaminants generated human metabolic performed gas chromatography mass spectrometry gas chromatography spectrophotometer sixteen chemical compounds metabolic sources found increase physical load concentrations chemical compounds human skin expired air correspondingly increased species offgassing rates pollutants human metabolism different among chinese americans russians due differences ethnicity dietary customs research provides data aid design development operation china long duration space mission elsevier ltd rights reserved
recent success cancer immunotherapy anti ctla anti confirmed hypothesis immune system control many cancers across various histologies cases producing durable responses way seen many small molecule drugs however less patients respond immunooncology drugs several resistance mechanisms identified cell exhaustion overexpression caspase beta catenin gene amplification mhc mutations improve response rates overcome resistance novel second third generation immuno oncology drugs currently evaluated ongoing phase trials either alone combination including novel inhibitory compounds tim vista lag ido kir newly developed stimulatory antibodies gitr icos important note stimulatory agents strikingly differ proposed mechanism action compared monoclonal antibodies accomplish immune activation blocking negative checkpoint molecules ctla others indeed prospect combining agonistic antagonistic agents enticing represents real immunologic opportunity step gas cutting brakes although strategy novel cancer therapy universally endorsed far concerns include prospect triggering cytokine release syndromes autoimmune reactions hyper immune stimulation leading activation induced cell death tolerance however toxicity major issue clinical trials reported far although initial phase clinical trials agonistic novel antagonistic drugs shown highly promising results absence disabling toxicity single agent studies combination chemotherapy immune system targeting drugs however numerous questions remain dose schedule route administration formulation well identifying appropriate patient populations view wealth potential mechanisms action ability fine tune monoclonal antibody structure function suit particular requirements second third wave immuno oncology drugs likely provide rapid advances new combinations novel immunotherapy especially stimulatory antibodies review mechanisms action clinical data new antibodies discuss major issues facing rapidly evolving field elsevier ltd rights reserved
lymphoproliferative disorder lpd polymorphous composition proliferation polymorphous lpd containing large lymphoid cells together small lymphocytes plasma cells macrophages eosinophils found individuals immunodeficiency conditions clinicopathological findings cases polymorphous lpd registered osaka lymphoma study group osaka japan analyzed represented registered cases six cases history rheumatoid arthritis five received immunosuppressive agents acquired immunodeficiency syndrome cases organ transplant recipients southern blotting polymerase chain reaction pcr based clonality analysis revealed monoclonal cell cell proliferation eight six cases lpd respectively polyclonality one lpd polymorphous proliferation containing large lymphoid cells medium large lymphoid cells occasional eosinophilic infiltration seen lpd epstein barr virus ebv detected three eight lpd four six lpd one one polyclonal lpd prognosis favorable year overall survival rate thus polymorphous lpd relatively rare japan heterogeneous disease monoclonal proliferation cells additionally occasionally ebv associated behaves aggressive lymphoma
novel animal model involving chimeric mice humanized livers established via human hepatocyte transplantation developed mice liver repopulated functional human hepatocytes could serve useful tool investigating human hepatic cell biology drug metabolism preclinical applications one key factors required successful transplantation human hepatocytes mice elimination endogenous hepatocytes prevent competition human cells provide suitable space microenvironment promoting human donor cell expansion differentiation date two major liver injury mouse models utilizing fumarylacetoacetate hydrolase fah uroplasminogen activator upa mice established however fah mice used mainly mature hepatocytes application upa model limited decreased breeding overcome limitations albtoxin receptor mediated cell knockout treck scid mice used vivo differentiation immature human hepatocytes humanized liver generation human hepatic stem cells hpscs successfully repopulated livers alb treck scid mice developed lethal fulminant hepatic failure following diphtheria toxin treatment model humanized liver alb treck scid mice functional applications studies involving drug metabolism drug drug interactions promote vivo vitro studies
immune system critical component defense viral bacterial parasitic fungal diseases immunological mechanisms including immunological mediators innate immunity cell mediated immunity humoral mediated immunity serve maintain homeostasis protect host disease immunological variation impact defense mechanisms however two factors particular influence immune function single nucleotide polymorphisms snps aging snps affecting inflammatory cytokines important modifier involved number diseases asthma periodontal disease atherosclerosis diabetic retinopathy psoriasis osteoporosis age related alterations immune system also studied documented genetic makeup different strains mice age different strains cause large differences susceptibility infection influenza virus infection among widely studied mechanism differences due either genetics age known investigated strain age specific infectious disease models
imatinib mesylate considered highly effective therapy chronic myeloid leukemia cml patients however minority patients fail achieve optimal response due impaired bioavailability human organic cation transporter oct slca reported main influx transporter involved uptake cml cells genetic variants hoct expression changes may influence response study aimed investigate impact hoct polymorphisms located exon hoct mrna levels clinical outcome cml patients hoct expression profile determined using quantitative real time polymerase chain reaction cml patients treated responders patients resistant patients genotyping cases controls hoct polymorphisms performed direct sequencing amplification exon results showed hoct gene significantly downregulated samples resistant group compared responder group moreover sequencing data show association cases snp intronic base pairs insertion gtaagttg end exon genotype allele distribution different snps differ significantly two groups patients hoct mrna expression may serve clinical biomarker response imatinib could useful predict therapy outcome cml patients
non invasive molecular imaging techniques enhance diagnosis achieve successful treatment well reveal underlying pathogenic mechanisms disorders multiple sclerosis cooperation advanced multimodal imaging techniques increased knowledge disease mechanism allows monitoring neuronal network therapeutic outcome well tools discover novel therapeutic targets diverse imaging modalities provide reliable diagnostic prognostic platforms better achieve precision medicine traditionally magnetic resonance imaging mri considered golden standard research diagnosis however positron emission tomography pet imaging provide functional information molecular biology detail even prior anatomic changes allowing close follow disease progression treatment response recent findings support three major neuroinflammation components astrogliosis cytokine elevation significant changes specific proteins offer great variety specific targets imaging purposes regardless fact imaging astrocyte function still young field need development suitable imaging ligands recent studies shown inflammation astrocyte activation related progression complex disease requires understanding disease mechanisms successful treatment pet precise non invasive imaging method biochemical functions potential enhance early accurate diagnosis precision therapy review focus modulation different receptor systems inflammatory aspect especially activation glial cells summarize recent findings pet imaging present potent targets new biomarkers main focus experimental research
fungi monilinia genus occur worldwide affect wide range economically important stone fruits several monilinia species responsible brown rot although disease common brazil monilinia genetic variability brazilian orchards generally poorly characterized present study represents first report genetic diversity monilinia brazilian orchards genetic structure brazilian population also compared isolates countries together morphological characteristics aggressiveness sixty one isolates belonging monilinia genus obtained different orchards brazilian states ten monilinia fructicola isolates united states one isolate fruit imported brazil also evaluated phylogenetic analysis region internal transcribed spacer clustered brazilian american isolates fructicola authentic strains bank two isolates one imported fruit clustered monilinia laxa results revealed fructicola prevalent species associated brown rot brazilian orchards evaluate intraspecific diversity fructicola laxa multigene sequence analysis performed using tef elongation factor whilst tef phylogenetically informative gene intraspecific studies fructicola rpb rna polymerase gene displayed low variation intraspecific analysis informative locus assigning isolates fructicola laxa species amova suggests brazilian isolates states main producing regions belong single genetic population genetically distinct californian population fructicola
background objectiveevidence role tgf airway epithelial repair asthma still controversial study tested hypothesis reduced tgf levels previously observed paediatric asthmatic airway epithelial cells directly contribute dysregulated repair seen cells methodsprimary airway epithelial cells paec children asthma non asthmatic subjects isolated subcultured investigation tgf gene protein via quantitative polymerase chain reaction qpcr enzyme linked immunosorbent assay elisa respectively expression associated genes integrins mmp also tested small interfering rna sirna employed assess role tgf wound repair resultstgf gene protein expression significantly downregulated asthmatic paec course repair compared cells non asthmatic children messenger rna mrna expression tgf also directly implicated non asthmatic asthmatic paec proliferation quiescent counterparts small interfering rna mediated knockdown tgf compromised repair non asthmatic paec exacerbated dysregulated repair seen asthmatic paec expression major tgf activators epithelial cells integrin also measured difference gene expression two cohorts although integrin gene expression significantly higher asthmatic paec expression mmp mmp facilitates mediated tgf activation significantly downregulated conclusionour data highlighted importance tgf paec wound repair vitro significantly lower levels seen asthmatic paec subsequently contributes dysregulated repair observed cells
backgroundthe incidence cutaneous nontuberculous mycobacterial ntm infection increased recent decades widespread use immunosuppressive therapy better detection methods histopathology cutaneous ntm infection pathognomic organisms slow difficult culture making diagnosis challenging methodswe reviewed clinical histopathological features cases cutaneous ntm infection performed panmycobacterial polymerase chain reaction pcr paraffin blocks resultsthe immunocompetent patients presented localized lesions extremities whereas immunocompromised patients presented disseminated cutaneous lesions histopathology immunocompetent patients characterized pseudoepitheliomatous epidermal hyperplasia intraepithelial abscesses transepidermal elimination dermal granulomatous inflammation accompanied necrosis suppuration immunocompromised patients showed suppurative inflammation little granuloma formation numerous acid fast bacilli paraffin block pcr positive cases whereas culture positive cases conclusionthe aforementioned histological features help diagnosing cutaneous ntm infection combined clinical microbiological correlation study find paraffin block pcr superior conventional culture detecting cutaneous ntm infection
mounting evidence shown naturally occurring cells regulatory cells tregs suppress autoimmunity alloimmunity previously shown tregs suppress allograft rejection also potent suppression conventional tregs however mechanisms underlying suppression alloimmunity well understood adoptive cell transfer model mice lacking lymphocytes found suppression skin allograft rejection tregs mostly dependent expression fas ligand either lacking fas ligand blocking antibodies largely abolished suppression allograft rejection mediated transferred cells suppression also mostly reversed effector cells lacked fas receptor indeed fasl tregs induced cell apoptosis vitro fas fasl dependent manner however suppression cell proliferation vitro dependent fasl expression furthermore adoptive transfer tregs significantly extended allograft survival even wild type mice tregs lacked fas receptor recipients received recombinant two measures synergistically expanded adoptively transferred tregs recipients thus study may important implications treg therapies clinical transplantation
background chromosome amplification affecting region common genomic alteration cervical cancer typically marking transition precancerous intraepithelial lesions invasive phenotype though potential encoded target genes amplification identified functional correlation potential oncogenic function still missing study investigated copy number changes expression level sec encoded new potential oncogene dysplastic cervical lesions analyzed role cervical cancer cell biology methods expression levels sec vimentin analyzed liquid based cytology specimens women varying grades cervical dysplasia ranging normal cases cancer immunofluorescence cytology additionally subset representative cases used fish analyses targeting sec explore functional role sec cervical cancer hela cells transfected sec plasmid sec sirna analyzed proliferation migration potential using real time monitoring trans well systems well changes expression emt markers results fish analyses swabbed cells showed rising number sec gains amplifications correlating grade dysplasia highest incidence high grade squamous intraepithelial lesions squamous cell carcinomas analyzing expression level sec vimentin found gradually increasing expression level proteins according severity dysplasia functional analyses sec silencing inhibited sec overexpression stimulated migration hela cells marginal effects cell proliferation expression level emt markers cytoskeleton structure conclusions study suggests sec target gene amplification stimulator cellular migration dysplastic cervical lesions hence sec could serve potential marker amplification providing useful information dignity biology dysplastic cervical lesions
although metagenomics relatively new scientific trend managed become popular many countries including russia year history division molecular genetics studies ecosystem extracted nucleic acids dna rna contain full information microbial community habitat owing metagenomic methods soil microbiology undertaken study known cultivated types microorganisms also noncultivated forms biological properties suggested exclusively genetic information coded dna turns phantom types constitute overwhelming majority within soil microbial communities appearances actively participate ensuring soil fertility hence opinion authors paper study topical basic research agricultural practice development metagenomic technologies help understand biological phenomena determined close plant microbe interactions increasing productivity agricultural crops protecting phytopathogens however introduction new methods always presented difficulties metagenomics associated acquisition storage bioinformational analysis huge array genetic information
early onset muscle disease includes three major entities present generally birth congenital myopathies congenital muscular dystrophies congenital myasthenic syndromes almost exclusively weakness hypotonia although cases manifesting hypertonia increasingly recognised diseases display wide phenotypic genetic heterogeneity uptake next generation sequencing resulting unparalleled extension phenotype genotype correlations diagnosis sequencing due unbiased sequencing perhaps ever detailed clinical evaluations necessary guide genetic diagnosis arrival molecular diagnosis frequently occurring following dialogue molecular geneticist referring clinician pathologist ever increasing blurring boundaries congenital myopathies dystrophies myasthenic syndromes addition many novel disease genes described new insights gained skeletal muscle development function despite advances made significant percentage patients remain without molecular diagnosis suggesting many human disease genes mechanisms identify technically clinically feasible perform next generation sequencing severe diseases population widescale preconception carrier screening occur newborn screening selected early onset muscle diseases also technically ethically achievable benefits patient family early management diseases also implemented need world wide reference centres meticulously curate polymorphisms mutations within particular gene becoming increasingly apparent particularly interpretation variants large genes cause early onset myopathies neb ryr ttn functional validation candidate disease variants crucial accurate interpretation next generation sequencing appropriate genetic counseling many published pathogenic variants frequent control populations thus likely rare polymorphisms mechanisms need put place systematically update classification variants accurate interpretation variants occurs review highlight recent advances made challenges ahead molecular diagnosis early onset muscle diseases elsevier ltd rights reserved
treatment acute myelogenous leukemia aml past four decades remains mostly unchanged prognosis majority patients remains poor significant advances observed defining cytogenetic abnormalities well genetic epigenetic profiles aml patients new cytogenetic genetic aberrations flt itd npm mutations able guide prognosis majority patients aml outcomes still dismal relapse rates remain high thought relapse aml part driven minimal residual disease mrd remains patient following treatment thus need sensitive objective methodology mrd detection methodologies multiparameter flow cytometry mfc quantitative real time polymerase chain reaction pcr digital pcr dpcr next generation sequencing ngs employed evaluate utility mrd assessment review provide overview aml clinical utility mrd measurement discuss optimal timing mrd measurement different approaches available efforts standardization across laboratories
plastid transformation successfully employed several dicotyledonous plants genetic modification difficult achieved monocotyledonous cereal crops remains still demanding technique engineering agriculture field one major obstacles applying plastid transformation crop plants limited availability suitable selective markers hygromycin aminoglycoside antibiotic ability inhibit prokaryotic protein synthesis best knowledge never reported research plastid transformation yet study aimed use hygromycin phosphotransferase gene hpt selective marker gene tracking plastid transformation rice site specific transformation vector rice plastid pcte constructed dicistronic expression hygromycin phosphotransferase hpt enhanced green fluorescent protein genes egfp results showed transplastomic rice plants successfully grew gradual selection hygromycin resistance integration dicistronic expression cassette intergenic region trni trna plastid genome verified southern blotting analysis transplastomic expression hpt egfp genes identified pcr stable expression dicistronic cassette rice confirmed confocal microscopy although plastid transformants rice presented heteroplastomic status study may facilitate development new selective markers improvement plastid transformation efficiency cereal crops
animal selection favourable phenotypes past currently replaced genotype selection quantitative traits assisted expanding molecular techniques context livestock improvement study polymorphism exon beta lactoglobulin beta gene investigated karagouniko chios sheep breeds using polymerase chain reaction restriction fragment length polymorphism pcr rflp possible associations milk traits examined total blood dna samples isolated pcr rflp analysis respective milk samples composition profile obtained goodness fit test hardy weinberg equilibrium hwe beta genotypes estimated associations found beta genotypes raw milk composition two alleles three genotypes observed breeds chios breed significantly deviated hardy weinberg equilibrium hwe conclusively linear mixed model analysis samples breeds collectively showed significant effects beta genotype lactose percentage somatic cell count scc lactation stage daily milk yield protein breed effect significant daily milk yield
lung cancer frequent cause mortality cancer patients non small cell lung cancer nsclc accounts similar lung cancer cases micrornas mirnas revealed perform important role cancer development progression based custom mirna microarray analysis patients nsclc mirna mir downregulation identified nsclc tissues compared normal lung tissues suggested mir acted tumor suppressor lung cancer overexpression mir validated using pairs nsclc adjacent normal tissue samples using taqman reverse transcription quantitative polymerase chain reaction assay order investigate tumor suppressor function mir ectopic expression mir nsclc cell lines established results revealed overexpressed mir markedly inhibited cell proliferation colony formation nsclc cell lines compared cells overexpressing negative control sequence additional investigation revealed mir overexpression significantly induced apoptosis cell cycle arrest phase cell lines compared cells overexpressing finally ectopic expression mir found repress cell migration invasion lung cancer cell lines results present study demonstrate first time mir functions tumor suppressor nsclc may novel potential molecular therapeutic target patients nsclc
review bio activities natural product sesquiterpenes present first description effects upon mitosis type biological effect upon cells unexpected sesquiterpenes believed inactivate proteins michael type additions cause non specific cytotoxicity yet certain types sesquiterpenes arrest cells mitosis measured cell biology biochemical imaging techniques listed sesquiterpenes arrest cells mitosis analyzed biological data support observations view biochemical complexity mitosis propose subset sesquiterpenes unique chemical structure target precise protein required mitosis since process mitotic arrest precedes cell death possible sesquiterpenes currently classified cytotoxic might also induce mitotic arrest analysis provides new perspective sesquiterpene chemical biology
correlative studies checkpoint inhibitor trials indicated better understanding human leukocytic trafficking human tumor microenvironment expedite translation future immune oncologic agents order directly characterize signaling pathways regulate human leukocytic trafficking tumor developed completely autologous xenotransplantation method reconstitute human tumor immune microenvironment vivo able genetically mark engrafted bone marrow cells well tumor cells follow endogenous leukocytic infiltration autologous tumor investigate human tumor intrinsic factors potentially regulate immune cells system silenced stat signaling tumor compartment expected stat signaling suppression tumor compartment autologously reconstituted humanized mice showed increased tumor infiltrating lymphocytes reduction arginase stroma associated slower tumor growth rate also used novel system characterize human myeloid suppressor cells well screen novel agents alter endogenous leukocytic infiltration tumor taken together present valuable method study individualized human tumor microenvironments vivo without confounding allogeneic responses
one novel standard reference plasmid namely puc rice constructed positive control calibrator event specific qualitative quantitative detection genetically modified rice kemingdaol kefeng kefeng llrice puc rice contained fragments rice specific endogenous reference gene sucrose phosphate synthase well five rice events existing qualitative pcr assay approach modified using puc rice create quantitative method limits detection correlating approximately copies rice haploid genomes quantitative pcr assay square regression coefficients ranged standard deviation relative standard deviation values repeatability ranged respectively ministry food drug safety korea validated method results suggest could used routinely identify five rice events elsevier ltd rights reserved
recombinant heparinase cloned bacteroides stercoris bsrhepi overexpressed escherichia coli intensively characterized complete gene bsrhepi identified southern blotting overexpressed inclusion body inclusion body solubilized guanidine hcl denatured bsrhepi easily purified using affinity column chromatography purified denatured enzyme successfully refolded dialysis tris hcl containing dtt cacl bsrhepi active tris hcl buffer containing nacl cacl dtt degrees enzyme digested heparin also heparan sulfate comparative hplc analysis degraded product heparin heparan sulfate digestion bsrhepi flavobacterial heparinase verified bsrhepi broader spectrum substrate specificities reported heparinases elsevier ltd rights reserved
atlantic blue crab callinectes sapidus rathbun commercially recreationally important decapod crustacean found estuarine nearshore waters western atlantic recent declines abundance compounded scarcity biological genetic information made blue crab high priority species research conservation south carolina suite microsatellite loci used estimate genetic diversity effective population size blue crab collected charleston harbor genetic diversity charleston harbor blue crab population relatively high whereas inbreeding fairly low effective size estimates order several hundred several thousand individuals results study exhibit good indications overall genetic health charleston harbor blue crab population provide valuable information incorporated management plans aid conservation blue crab
invasive candidiasis remains one serious community healthcare acquired infections worldwide conventional candida detection methods based blood plate culture time consuming require least days identify various candida species despite considerable advances candidiasis detection development simple compact portable point care diagnostics rapid precise testing automatically performs cell lysis nucleic acid extraction purification detection still remains challenge systematically review prominent conventional nonconventional techniques detection various candida species including candida staining blood culture serological testing nucleic acid based analysis also discuss advanced lab chip devices candida detection
familial hypercholesterolemia characterized severely elevated low density lipoprotein ldl cholesterol herein identified patient presenting novel compound heterozygote mutations ldl receptor ldlr patient responded modestly maximum rosuvastatin plus ezetimibe therapy even combination pcsk monoclonal antibody injection using cell biology molecular dynamics simulations aimed define underlying mechanism ldlr mutations affect ldl metabolism lead hypercholesterolemia data showed ldlr class mutant mostly failed exit endoplasmic reticulum degraded even though ldlr ldlr similar levels cell surface total receptor bound equally well ldl extracellular pcsk ldlr resistant exogenous pcsk mediated degradation endosomes lysosomes showed reduced ldl internalization degradation relative ldlr evidence provided tighter association ldl ldlr acidic reduced ldl delivery late endosomes lysosomes increased release medium bound internalized ldl compared ldlr data suggested ldlr recycles loaded ldl cargo findings demonstrate ldlr represents ldlr loss function novel class causing mechanism thereby rationalizing observed phenotype
staphylococcal nuclease snase catalyzes hydrolysis phosphate backbone dna rna leaving phosphate mononucleotides dinucleotides snase extensively used model protein investigating enzymatic mechanism thermodynamic stability protein folding unanswered question regarding enzymatic structure function relationship snase capable binding dna catalyzing dna hydrolysis understanding mechanism snase dna interaction structural level investigated interactions mutant snase snase ssdna presence using various nmr techniques including pulsed field gradient diffusion measurement nmr titration affinity measurement chemical shift mapping backbone dynamics three dimensional structural determination snase retains similar dna binding ability native snase loses catalytic activity binding ssdna snase induced certain degree backbone conformational exchange motion ssdna binding regions might account preferential binding dna based nmr derived structure ssdna bound snase built three dimensional model snase ssdna complex resulting model enabled functional roles snase discussed particular action nuclease ssdna elsevier inc rights reserved
planar cell polarity pcp pathway best known role polarizing epithelial cells within plane tissue also plays role range cell migration events development mechanism pcp pathway polarizes stationary epithelial cells well characterized pcp signaling functions regulate dynamic cell behaviors directed cell migration much less understood review recent discoveries regarding localization pcp proteins migrating cells impact cell biology collective individual cell migratory behaviors
amphioxus cdna amphigmap encoding activator protein isolated gut cdna library branchiostoma belcheri long longest open reading frame codes precursor protein consisting amino acid residues signal peptide amino acids deduced amino acid sequence includes conserved domain typical gmaps residues single linked glycosylation site position conserved cysteines phylogenetic analysis showed amphigmap forms club together invertebrate gmaps indicating amphigmap evolutionarily closely related invertebrate gmaps rather vertebrate ones northern blotting situ hybridization histochemistry analyses revealed tissue specific expression pattern amphigmap adult amphioxus strongest expression digestive system contrast widespread expression pattern human mouse sheep gmap genes suggested amphigmap possibly involved take digested food components like lipid molecules
cullin ring ligase crl complex cul ddb regulates cell cycle dna damage repair chromatin replication targeting variety substrates ubiquitination crl also hijacked viral proteins thalidomide derived compounds degrade host restriction factors report abl non receptor kinase phosphorylates ddb residue tyr recruit small regulatory protein dda leading increased substrate ubiquitination pharmacological inhibition genetic ablation abl ddb dda axis decreases ubiquitination crl substrates including ikzf ikzf lenalidomide treated multiple myeloma cells importantly panobinostat recently approved anti myeloma drug dexamethasone enhance lenalidomide induced substrate degradation cytotoxicity activating abl therefore providing mechanism underlying combination lenalidomide treat multiple myeloma
statistically valid invalid reasons scientists differing default hypotheses disagree high profile situations examples found recent correspondence journal may offer lessons resolving challenges mainstream science particularly adherents minority view attempt elevate status outlier studies claim self interest explains acceptance dominant theory edward calabrese debating historical origins linear threshold theory lnt carcinogenesis use regulation ionizing radiation professor calabrese supporter hormesis charged committee scientists misconduct preparation report genetic effects atomic radiation specifically argues report mischaracterized lnt research record suppressed calculations committee members reviewing available scientific literature found contemporaneous evidence overwhelmingly favored genetics lnt calculations suppressed calabrese claims scientific record hold primarily lack attention statistical analysis ironically outlier studies likely favor supra linearity sub linearity finally claim investigator bias underlies calabrese accusations key studies based misreading text attention ethics charges early may help seed counter narrative explaining community adoption default hypothesis may help focus attention valid evidence real weaknesses dominant paradigm
two promoter probe plasmid vectors designated pipp pipp constructed existing plasmids pxe pset pipp use xyle gene pseudomonas putida reporter transferred streptomycetes conjugation escherichia coli function plasmids promoter probes demonstrated streptomyces antibioticus streptomyces coelicolor using phenoxazinone synthase polynucleotide phosphorylase promoters antibioticus xyle activity could detected colonies agar plates via vitro assay catechol dioxygenase integration antibioticus chromosome constructs containing phsa promoter verified southern blotting presence bla locus pipp allows recovery putative promoters marker rescue elsevier inc rights reserved
skeletal muscle abundant tissue body responsible generating force required movement also important thermogenic organ skeletal muscle enigmatic tissue one hand skeletal muscle regeneration injury arguably one best studied stem cell dependent regenerative processes hand skeletal muscle still subject many degenerative disorders therapeutic options clinic important develop new regenerative medicine based therapies skeletal muscle future therapeutic strategies take advantage rapidly developing technologies enabling differentiation skeletal muscle human pluripotent stem cells along precise genome editing hand hand steady focused approach understanding underlying mechanisms skeletal muscle development regeneration disease review focus highlighting recent advances particularly relied developmental molecular biology approaches understanding muscle development stem cell function copyright pathological society great britain ireland published john wiley sons ltd
staphylococcus aureus important human pathogen relies large repertoire secreted cell wall associated proteins pathogenesis consequently ability organism cause disease absolutely dependent ability synthesize successfully secrete proteins study investigate role peptidyl prolyl cis trans isomerases ppiases activity aureus secreted virulence factor nuclease nuc identify staphylococcal cyclophilin type ppiase ppib required optimal activity nuc disruption ppib results decreased nuclease activity culture supernatants however levels nuc protein altered suggesting decrease activity results misfolding nuc absence ppib demonstrate ppib exhibits ppiase activity vitro localized bacterial cytosol directly interacts nuc vitro accelerate rate nuc refolding finally demonstrate additional role ppib aureus hemolysis demonstrate aureus parvulin type ppiase prsa also plays role activity secreted virulence factors deletion prsa leads decrease secreted protease phospholipase activity similar observed gram positive pathogens together results demonstrate first time knowledge ppiases play important role secretion virulence factors aureus importance staphylococcus aureus highly dangerous bacterial pathogen capable causing variety infections throughout human body ability aureus cause disease largely due extensive repertoire secreted cell wall associated proteins including adhesins toxins exoenzymes superantigens virulence factors produced typically transported across cell membrane secretory sec system denatured state consequently outside cell must refold active form step often requires assistance bacterial folding proteins ppiases work investigate role ppiases aureus uncover cyclophilin type enzyme assists folding refolding staphylococcal nuclease
silver carp one important planktivorous fish chinese aquaculture plays significant role controlling cyanobacterial blooms balanced gut microbiota crucial growth health host important roles immune defense digestion complex carbohydrates production enterocytes study dominant bacterial cellulolytic bacterial clostridium clostridium iii clostridium xivab fibrobacter communities contents mucus silver carp gut foregut midgut hindgut analyzed denaturing gradient gel electrophoresis quantitative polymerase chain reaction qpcr analyses results revealed dominant cellulolytic bacterial communities significantly different among gut regions well contents mucus bacterial diversity richness contents mucus increased along gut higher contents local mucus sequence analysis gut samples exhibited conservative phylotypes proteobacteria actinobacteria firmicutes gut silver carp harbored abundance cellulolytic bacteria particularly clostridium xiv foregut segment highest proportions four cellulolytic bacteria followed midgut hindgut however proportions cellulolytic species silver carp gut much lower terrestrial vertebrate gastrointestinal tract conclude gut bacteria could help silver carp obtain energy cyanobacteria may silver carp maintain high growth rates cyanobacterial blooms
purpose review new risk stratification systems treatment strategies introduced recent years aim provide overview recent changes summarise data concise article would useful clinicians recent findings apart clinical stage disease genetics recognised important prognostic risk factors various new cytogenetic changes negative prognostic impact identified new technologies minimal residual disease detection also playing important role prognostic assessment recent introduction combination therapy proteasome inhibitors immunomodulatory drugs showing promising results high risk patients may partially abrogate negative impact associated adverse risk factors summary recent advance improved understanding high risk multiple myeloma new therapeutic agents coming pipeline patient group dismal outcome
aim existing evidence suggests endothelial lipase plays important role high density lipoprotein hdl metabolism rabbits useful animal model study human lipid metabolism atherosclerosis characterized rabbit rel expression investigated relationship plasma hdl levels normal hyperlipidemic rabbits methods cloned rel cdna analyzed tissue expression using northern blotting real time pcr western blotting situ hybridization evaluated effects rel antisense plasma hdl levels results found rel mrna highly expressed cholesterol synthesis related organs including liver testis adrenal along expression lung kidney bone marrow small intestine interestingly watanabe heritable hyperlipidemic whhl rabbits model human familial hypercholesterolemia lower plasma levels hdls normal rabbits plasma hdl levels whhl rabbits inversely associated high levels plasma rel proteins hepatic expression rel mrna injection rel specific antisense oligonucleotides rabbits resulted elevation plasma large hdls furthermore demonstrated rel mrna expressed endothelial cells macrophages lesions aortic atherosclerosis whhl rabbits conclusions rel expressed multiple tissues may many physiological pathophysiological functions regulation cholesterol metabolism atherosclerosis results suggest important regulator plasma hdl levels rabbits
background clinical practice laboratory results often important making diagnostic therapeutic prognostic decisions interpreting individual results relies accurate reference intervals decision limits despite considerable amount resources clinical medicine spent elderly patients accurate reference intervals elderly rarely available seniorlab study set determine reference intervals elderly investigating large variety laboratory parameters clinical chemistry hematology immunology methods design seniorlab study observational prospective cohort study subjectively healthy residents switzerland aged years older included baseline examination anthropometric measurements taken medical history reviewed fasting blood sample drawn optimal preanalytical conditions laboratory parameters measured biobank set study participants followed every years quality life morbidity mortality primary aim evaluate different laboratory parameters age related reference intervals secondary aims study include following identify associations different parameters identify diagnostic characteristics diagnose different circumstances identify prevalence occult disease subjectively healthy individuals identify prognostic factors investigated outcomes including mortality discussion obtain better grounds justify clinical decisions specific reference intervals laboratory parameters elderly needed reference intervals obtained healthy individuals major obstacle obtaining reference intervals elderly definition health seniors individuals without medical condition medication rare older adulthood reference intervals obtained individuals considered representative seniors status age specific normal health addition established methods determining reference intervals longitudinal study utilizes unique approach survival long term well taken indicators health seniors approach expected provide robust representative reference intervals obtained adequate reference population collective highly selected individuals
tumor protein tumor suppressor gene vital cellular cancer suppressor multicellular organisms murine double minute mdm oncoprotein inhibits activity number studies examined association mdm polymorphisms risk common forms cancer findings remain inconclusive present study aimed evaluate impact insertion deletion polymorphism mdm promoter region polymorphism susceptibility prostate cancer pca sample iranian population case control study included patients pathologically confirmed pca patients benign prostatic hyperplasia mdm polymorphism determined using polymerase chain reaction analysis results demonstrated mdm polymorphism increased risk pca dominant inheritance model odds ratio confidence interval variant marginally increased risk pca dominant model significant association observed polymorphism pca conclusion present study demonstrated polymorphism mdm promoter increased risk pca iranian population investigations diverse ethnicities larger sample sizes required verify results
abysis web based antibody research system includes integrated database antibody sequence structure data system interrogated numerous ways simple text sequence searches sophisticated queries apply structural constraints publicly available version includes pre analyzed sequence data european molecular biology laboratory european nucleotide archive embl ena kabat well structure data protein data bank researcher sequences also analyzed web interface defining characteristic abysis sequences automatically numbered series popular schemes kabat chothia annotated key information complementarity determining regions potential post translational modifications unique aspect abysis set residue frequency tables position antibody allowing unusual residues rarely seen particular position highlighted decisions made mutations may acceptable especially useful comparing antibodies different species abysis useful researcher specializing antibody engineering especially developing antibodies drugs abysis available www abysis org published elsevier ltd
ampa receptor subunit glur downregulated neurons following wide range neurological insults report suppression glur gene promoter activity associated kainate induced downregulation glur subunit levels primary cultured cortical neurons pcr northern blotting showed significant decrease glur mrna cultured neurons exposure transfection cultured neurons expression vector pgl glur reporter gene firefly luciferase driven glur promoter revealed exposure suppressed transcriptional activation glur promoter furthermore expression silencing transcription factor rest increased exposed cortical neurons enhanced binding rest like silencer element proximal promoter glur subunit gene evidenced electrophoresis mobility shift assay chromatin immunoprecipitation showed suppressed activity glur promoter cultured neurons exposure related deacetylation histone results indicate rest crucial factor binds like silencer element glur promoter suppressing transcription glur subunit gene exposure data suggest transcriptional suppression gur subunit gene may contribute least part downregulation glur subunit protein neurons exposure experiments showed reduction glutamate release exposed cortical neurons rest may play latent role delayed neuronal death seizure induced tolerance elsevier ireland ltd rights reserved
recombinant adeno associated virus raav vectors proving reliable gene transfer system several clinical applications increasing body evidence supporting safety efficacy realizing clinical commercial potential raav depends reliable source high quality well characterized raav lots requirement challenging achieve due limits manufacturing platforms lot lot variability differences rigor applied quality control assays addition reliable high quality vectors limited quantities raav hampered clinical development discouraged investigations applications require large therapeutic doses quantities needed treat large patient populations minimal number vector production runs sufficient support phases clinical development including non clinical pharmacological toxicological studies well clinical studies commercial supply production platform using invertebrate cell line emerged scalable economical source raav access larger quantities raav enabled evaluation gene therapeutics diseases require large doses per patient diseases large patient populations licensed raav product glybera produced cells raav products clinical trials united states europe development raav genetics processes overview current system described
treatment diseases gene therapy advancing rapidly use gene therapy expanded original concept replacing mutated gene causing disease use genes control nonphysiological levels expression modify pathways known affect disease genes offer numerous advantages conventional drugs longer duration action specific genes delivered target site naked dna cells nonviral viral vectors enormous progress past decade molecular biology delivery systems provided ways targeting genes intended cell tissue safe long term vectors eye ideal organ gene therapy easily accessible immune privileged site currently clinical trials diseases affecting practically every tissue eye including restore vision patients leber congenital amaurosis however number eye trials compared systemic diseases quite low nevertheless judging vast amount ongoing preclinical studies expected number increase considerably near future one area great need eye gene therapy glaucoma long term gene drug would eliminate daily applications compliance issues review current state gene therapy glaucoma possibilities treating trabecular meshwork lower intraocular pressure retinal ganglion cells protect neurodegeneration
fish protein hydrolysate prepared muscle small red scorpionfish scorpaena notata treatment protease fungus penicillium digitatum protein hydrolysate found strongly inhibit angiotensin converting enzyme exhibited high antioxidative activity diphenyl picrylhydrazyl free radical scavenging assay ultrafiltration peptides isolated two step procedure size exclusion chromatography toyopearl followed reversed phase high performance liquid chromatography high purification yield peptide per gram initial protein two major peptides identified nanoscale liquid chromatography coupled tandem mass spectrometry nano corresponding following sequences leu val thr gly asp asp lys thr asn leu lys asp thr gly ser asp lys lys gln leu peptides mainly composed hydrophilic amino acids showed high antioxidative angiotensin converting enzyme inhibitory activities data suggest two novel peptides isolated muscle hydrolysate small red scorpionfish beneficial ingredient functional foods pharmaceuticals hypertension oxidative stress international union biochemistry molecular biology inc
polycomb group proteins regulate chromatin structure important regulatory role gene expression various cell types two polycomb group complexes polycomb repressive complex prc prc identified mammalian cells prc prc compact chromatin also catalyze histone modifications prc mediates monoubiquitination histone whereas prc catalyzes methylation histone lysine alterations histones lead altered gene expression patterns regulating chromatin structure numerous studies highlighted role prc catalytic component enhancer zeste homolog ezh neoplastic development progression ezh mutations identified various malignancies modulating expression critical genes ezh actively involved fundamental cellular processes cell cycle progression cell proliferation differentiation apoptosis addition cancer cells ezh also decisive role differentiation function effector regulatory cells review summarize recent progress regarding role ezh human malignancies highlight molecular mechanisms ezh aberrations promote pathogenesis cancer discuss anti tumor effects ezh targeting via activating direct anti cancer mechanisms anti tumor immunity
background constitutional mismatch repair deficiency syndrome results allelic inheritance mutations affecting key dna mismatch repair genes mlh msh msh pms individuals allelic mutations dysfunctional mismatch repair system birth result constitutional mismatch repair deficiency syndrome characterised early onset malignancies fewer cases reported literature past years first report founder pms mutation del valtrpfster exon associated cancers family case presentation proband years old alive today pakistani ethnic origin product consanguinity initially presented aged painless bleeding per rectum colorectal polyps referred clinical genetics clinical examination revealed two cafe lait lesions lichen planus dermoid cyst sister diagnosed childhood aggressive brain tumour followed colorectal cancer follow proband developed colorectal adenomatous polyps synchronous ovarian endometrial adenocarcinomas ultimately metachronous gastric adenocarcinoma dna sequencing peripheral lymphocytes revealed allelic inheritance pms mutation del valtrpfster exon ovarian tumour tissue demonstrated low microsatellite instability date total abdominal hysterectomy bilateral salpingo oophorectomy total gastrectomy aspirin oestrogen hormone replacement therapy provide chemoprophylaxis manage postmenopausal symptoms respectively monthly colonoscopy surveillance programme led excision three high grade dysplastic colorectal tubular adenomatous polyps proband family pedigree displays multiple relatives cancers including likely case true turcot syndrome conclusions constitutional mismatch repair deficiency syndrome considered patients present early onset cancer strong family history cancer cutaneous features resembling neurofibromatosis type immunohistochemistry analysis tumour normal tissue sensitive specific identifying patients mismatch repair deficiency direct dna sequencing lymphocytic tissue establish diagnosis microsatellite instability status appears little value identifying patients may constitutional mismatch repair deficiency syndrome
background hypertrophic cardiomyopathy hcm patients early repolarization pattern higher risk ventricular arrhythmia yet genetic background situation well investigated report novel trigenic mutations detected chinese family obstructive hcm short syndrome sqts methods proband family members underwent detailed medical assessments dnas extracted peripheral blood leukocytes genetic screening next generation method functional characterization mutation conducted tsa cells patch clamp experiment results proband year old male pattern ecg inferioral lateral leads atrioventricular block qtc also suffered severe left ventricular hypertrophy dysfunction targeted sequencing revealed trigenic mutations des mypn cacnac mutations also detected daughter mild myocardium hypertrophy cacnac mutation caused significant reduction compared cacnac computer modeling showed mutations highly disease causing proband received crt cardiac resynchronizing therapy implantation lowered left ventricular outflow tract gradient lvotg mmhg pre mmhg post restored function lvef pre post conclusions study reveals novel cacnac mutation underlying unique pattern ecgs sqts also shows rare trigenic mutations pathogenic substrates complicated clinical manifestation hcm patients
relationships abundance potential geosmin methylisoborneol producing mib cyanobacteria bacteria concentrations two taste odour compounds examined day incubation natural water surface bottom three reservoirs southeast queensland australia single known producing cyanobacterium geitlerinema spp detected microscopy low density one reservoir densities potential producing streptomyces determined quantitative polymerase chain reaction qpcr assay highest bottom water varied cells geosmin ranged highest concentrations bottom water mib varied highest concentration surface water concentrations compounds declined incubation light dark conditions presence geosmin synthase gene geoa cyanobacteria streptomyces examined different pcr approaches cloning pcr products amplification geoa showed high similarity geoa cyanobacteria streptomycetes results demonstrate research ecology molecular biology producers required better understand dynamics monitor emerging episodes
aim study investigate effects two dietary medicinal herbs rose hip rosa canina safflower carthamus tinctorius supplementation growth performance haematological biochemical parameters innate immune response juvenile beluga huso huso fish allocated tanks fish per tank triplicate groups fed control diet diets containing medicinal herbs respectively feed conversion ratio fcr specific growth rate sgr condition factor show significant differences fish given herbal diets significant differences observed number white blood cells wbc haemoglobin values among dietary treatments serum alanine aminotransferase alt aspartate aminotransferase ast levels significantly lower supplemented diet groups compared control innate immune responses lysozyme activity ach significantly higher safflower fed fish compared groups results indicate medicinal herbs diets considered beneficial dietary supplement improving physiological parameters enhance immune response persian sturgeon elsevier ltd rights reserved
liquid sublingual allergen immunotherapy slit used label decades food drug administration fda approved grass ragweed slit tablets available united states since potentially life threatening events slit occur although appear rare especially fda approved products practice guidelines incorporate safety precautions regarding use slit united states needed clinical commentary attempts address unresolved issues including controversy regarding fda mandate prescription epinephrine autoinjectors patients slit approach polysensitized patients optimal timing duration slit administration address gaps therapy whether antihistamines prevent local reactions certain patient populations persistent asthmatics receive slit instruct patients self administer epinephrine key points physicians focus educating patients regarding administer slit recognize potentially serious allergic reaction slit administer epinephrine seek emergency care american academy allergy asthma immunology allergy clin immunol pract
development transition state analogs major objective enzymology developing potent inhibitors enzymes also dissecting enzyme catalytic mechanisms phosphinic peptides share closed structural similarities transition state peptide substrate upon hydrolysis thus considered identifying potent inhibitors proteases focusing zinc proteases family review presents important synthetic efforts performed obtain desired compounds crystal structures phosphinic peptides interaction zinc protease targets reported illustrate structural features may explain potency compounds contribute uncover key enzyme catalytic residues based remarkable metabolic stability phosphinic peptides used probe vivo function zinc proteases progress chemistry better understanding functional roles zinc proteases allow transferring compounds shelf clinic
insulin receptor substrates irss well known play crucial roles mediating intracellular signals insulin like growth factors igfs insulin previously showed irs forms high molecular mass complexes containing rnas identify rnas irs complexes performed ultraviolet cross linking immunoprecipitation analysis using hek cells expressing flag irs flag irs detected radioactive signals immunoprecipitates flag irs proportional irradiation immunoprecipitates flag irs suggesting direct contact rnas irs rnas cross linked irs amplified pcr followed sequence analysis isolated sequence tags attributed messenger rnas non coding rnas including small nucleolar rnas snornas focused interaction irs snorna host rack receptor activated kinase pre mrna confirmed interaction irs rack pre mrna immunoprecipitation irs followed northern blotting pcr analyses mature irs mouse embryonic fibroblasts quantitatively less also found part nuclear irs localized cajal body nuclear subcompartment snorna mature unanticipated function irs snorna biogenesis highlights potential rna associated irs complex open new line investigation dissect novel mechanisms regulating igfs insulin mediated biological events
monkey important experimental model pharmacological evaluation new drugs isolated monkey multidrug resistance associated protein mrp cdna examine expression profiles among various tissues measured atpase activity assess substrate specificity amino acid sequence encoded monkey mrp cdna similar identity reported human mrp cdna genbank accession tissue distribution mrp monkeys partially different humans found relatively high expression mrp monkey kidney small intestine using northern blotting substrate specificity compared human monkey mrp affinity beta estradiol beta glucuronide methotrexate vinblastine probenecid monkey mrp higher human mrp functional expression differences human monkey mrp incorporated evaluation candidate drugs elsevier rights reserved
dams fragment aquatic networks impact evolutionary dynamics migratory fish populations historically lake pend oreille lower clark fork river system idaho montana supported large metapopulation adfluvial westslope cutthroat trout westslope fish matured lake made upstream spawning migrations natal tributaries river currently dams allow downstream passage juvenile fish lake upstream passage adults examined microsatellite anonymous nuclear loci characterize spatial patterns non native rainbow trout rainbow genetic introgression westslope populations upstream downstream dams detected hybridization sites sampled throughout system rainbow introgression ranging rainbow introgression higher tributaries downstream dams sites downstream sites upstream within tributaries hybrids common lower sections one sampled site contained hybrid swarm fish collected dams spawning migration admixtures westslope rainbows hybrids average rainbow introgression phenotypic criteria reduced rainbow introgression less putative westslope identified selective upstream transport dams lack upstream fish passage dams likely constrained spread hybridization increased isolation among non hybridized westslope populations reducing abundance migratory life history form areas upstream dams
arginine arg presents potent growth hormone releasing activity vivo vitro studies carried laboratory demonstrated acute treatment arg also increases gene expression taking account recognizable diabetogenic role arg increases insulin release study aimed evaluating effects oral chronic administration arg gene expression northern blotting analysis insulin sensitivity means insulin tolerance test itt blood glucose decay rate kitt insulin plasma concentration demonstrated rats consumed arg similar day drinking water weeks presented increase mrna content decreased peripheral response insulin shown reduced blood glucose decay rate higher insulin plasma concentration control group arg treatment modify animals food water intake decreased heart rate arterial blood pressure compared control group according results presented herein conclude chronic oral administration arginine increases gene expression induces insulin resistance arterial blood pressure decrease already pointed literature seems occur response dilating effect nitric oxide generated arg well generation central peripheral neuronal populations express nos involved autonomic regulation cardiac function elsevier inc rights reserved
like fissionable isotope knowledge half life fortunately teachers craft information ways change nuclear heart subject matter ensure interest linkage retention telling good story taking students existing knowledge background account carefully craft appropriate analogy integrated stories key concepts information rendered familiar accessible engaging enjoyable marvels squabbling cell example story employs anthropomorphosis convey general cell biology lighthearted manner personal experience social rules enable deeper understanding complex biological subject matter equally important story lives students conceptual landmark remains view instruction
ocular toxoplasmosis chorioretinal infection toxoplasma gondii common etiology posterior uveitis many countries accurate diagnosis depends heavily characteristic clinical features disease atypical presentations especially immunocompromised patients may create diagnostic challenges lead misdiagnosis inappropriate treatment molecular biology techniques diagnose ocular toxoplasmosis available many years accessible standard laboratory tests many countries aqueous humor vitreous evaluation detect parasite dna polymerase chain reaction specific antibody may provide definitive evidence rapid diagnosis oral pyrimethamine sulfadiazine plus systemic corticosteroids effective therapy ocular toxoplasmosis recent data supports use treatment approaches including intravitreal antibiotics aim present review discuss briefly new diagnostic tools treatment options ocular toxoplasmosis karger basel
glycan structure alterations cancer regulate disease progression represent clinical biomarkers study determined degree changes glycosyltransferase activities cancer related aberrant cell surface tumor associated carbohydrate structures taca end changes sialyltransferase sialylt fucosyltransferase fuct galactosyltransferase galt activity measured normal tumor tissue using miniaturized enzyme activity assay synthetic glycoconjugates bearing terminal lacnac type gal beta glcnac lacnac type gal beta glcnac mucin core type iii gal beta galnac structures data related taca using tissue microarrays containing breast colon cancer specimen results show primary human breast colon tumors adjacent normal tissue express elevated beta galt alpha sialylt activity form alpha sialylatedtype iiiglycans sia alpha gal beta galnac prostate tumors exhibit elevated enzymatic activities alpha fuct activity higher breast colon tissue enzymology based prediction enhanced alpha sialylated type iii structures breast tumors verified using histochemical analysis tissue sections tissue microarrays binding two markers recognize gal beta galnac peanut lectin mab elevated breast tumor normal control upon sialidase treatment antigens also upregulated colon tumors though lesser extent alpha sialylatedtype iii expression correlated inversely patient expression breast metastatic potential overall enzymology measurements glycot activity predict truncated glycan structures tumors high expression alpha sialylated antigen glycans occur breast tumors transformation linear core glycan epitopes may accompany metastasis
objective examine differences inflammation markers sexually active versus abstinent women observe changes inflammation markers across menstrual cycle cycle related immune fluctuations may evolved reduce interference conception reproductively active sexually active women show variability cytokine expression design participants provided serum samples menses ovulation cytokines assayed saliva samples menses follicular ovulation luteal phases reactive protein crp assayed participants self reported intercourse frequency study setting academic research laboratory patient thirty two healthy naturally cycling premenopausal women sexually active abstinent intervention observational study main outcome measure levels proinflammatory cytokines interleukin interferon gamma ifn tumor necrosis factor alpha inf alpha anti inflammatory cytokine interleukin marker total inflammation crp result sexually active women higher levels immune markers measured including pro antiinflammatory cytokines abstinent women relative sexually active women abstinent women less change across menstrual cycle levels crp among sexually active women higher intercourse frequency predicted greater midcycle decreases crp ifn midcycle increases conclusion sexual activity may stimulate complex interaction pro anti inflammatory cytokines subsequently drives midcycle declines inflammation american society reproductive medicine
eukaryogenesis emergence eukaryotic cells represents pivotal evolutionary event fundamentally complex cellular plan compared prokaryotes eukaryotes major contributors aspects life earth decades understood eukaryotic origins lie within archaea domain alpha proteobacteria however much less clear precise ancestors eukaryotes originated order emergence distinctive eukaryotic cellular features many competing models eukaryogenesis proposed recently absence discriminatory data meant consensus elusive recent advances paleogeology phylogenetics cell biology microbial diversity particularly discovery candidatus lokiarcheaota phylum providing new insights aspects eukaryogenesis new data allowed time frame eukaryogenesis occurred finessed precise identification contributing lineages biological features contributors clarified considerable advances used pinpoint prokaryotic origins key eukaryotic cellular processes intracellular compartmentalisation major implications models eukaryogenesis
testicular maturation arrest characterized interruption germ cell development differentiation genetic factors play important role causation human disease including male infertility objective study copy number variations testicular maturation arrest using single nucleotide polymorphism snp microarray technique conventional cytogenetics targeted fluorescence insitu hybridization fish sequence tagged site sts polymerase chain reaction pcr used confirm snp microarray findings snp microarray cases testicular maturation arrest detected copy number variations cnvs mostly sex chromosomes involving pseudoautosomal regions par well azoospermic factors azfs besides three cases chromosomal abnormalities two klinefelter syndromes one case dicentric azf deletion observed cases azfc gain observed cases par cnvs observed cases par cnvs detected cases controls tspy gene gain within par cnvs observed cases control cnv containing autosomal genes possibly associated male infertility study spataa five cases study snp microarray identified possible underlying aetiology cases besides identifying minimal critical region azfc deletion involving tty rbmyfp rbmyf rbmyj tty pry genes snp microarray seems superior sensitive specific well cost effective method potential first tier investigations explore underlying genomic factors testicular maturation arrest present study attempt find probable genomic factors idiopathic testicular maturation arrest
aberrant levels circulating micrornas potential biomarkers early detection colorectal cancer aim study study mir mir serum non invasive biomarker colorectal cancer diagnosis applied quantitative polymerase chain reaction determine levels mir mir pairs tumor adjacent non tumor tissues serum samples patients control subjects results showed mir silenced whereas mir overexpressed colorectal cancer similarly serum mir level significantly lower colorectal cancer patients control subjects whereas mir frequently detectable patients roc analysis showed auc mir sensitivity specificity serum mir level showed high sensitivity specificity early late stage crcs proximal distal crcs detectable serum mir showed sensitivity specificity discriminating crc patients sensitivity dropped late stage patients also included analyses blood cea level comparing diagnostic performance blood based biomarkers median level crc patients significantly higher control auc value cea diagnosing crc patients cea showed positive correlation tumor stage age patients level higher male collectively serum mir strong potential promising non invasive biomarker colorectal cancer detection
aim present study evaluate functions mir regulation tumor growth metastasis renal cancer cells investigate underlying mechanisms study mir downregulated two renal cancer cell lines namely achn proliferation colony formation migration invasion cells measured expression levels various mrnas proteins analyzed using reverse transcription quantitative polymerase chain reaction western blotting respectively found mir suppressed proliferation migration invasion renal cancer cells conversely inhibition endogenous mir resulted increased cell proliferation metastasis furthermore luciferase reporter assay revealed mir directly targeted untranslated regions oncogenes cell specific moloney murine leukemia virus insertion site bmi transcription factor mrnas reduced expression bmi regulated expression downstream genes including cadherin cadherin vimentin results indicate tumor suppressor role mir renal cancer cells via direct targeting bmi
although trypanosoma rangeli harmless humans serious problem since may confused diagnosis trypanosoma cruzi etiologic agent chagas disease parasites overlap geographically share antigenic protein able infect triatominae vector vertebrate host including human objective differentiate cruzi rangeli isolates colombia based polymerase chain reaction pcr amplification minicircles followed appropriate hybridization tests selected dna probes restriction fragment length polymorphism rflp analysis worked highly characterized cruzi rangeli isolates different biologic origins geographic areas colombia analyzed rflp pcr amplification variable region minicircles southern blot analysis results experimental conditions demonstrate usefulness pcr amplification minicircles followed southern blot analysis differentiate cruzi rangeli highly important improve diagnosis chagas disease elsevier inc rights reserved
species drosophila melanogaster species subgroup including species simulans mauritiana yakuba santomea long served model systems studying evolution however studies species limited paucity genetic transgenic reagents describe collection transgenic genetic strains generated facilitate genetic studies within species generated many strains species containing mapped piggybac transposons including enhanced yellow fluorescent protein eyfp gene expressed eyes phi attp site specific integration site tested subset lines integration efficiency reporter gene expression levels also generated smaller collection lines expressing genetically encoded fluorescent molecules eyes number transgenic reagents useful functional studies species addition mapped insertion locations transposable elements virilis useful genetic mapping studies
purpose reviewto highlight recent advances understanding nutritional immunology development novel therapeutics inflammatory bowel disease ibd recent findingswe highlight variety factors contribute interaction immune system nutrition including microbiome nervous system stimulation gut describe potential therapeutic development ibd review cellular metabolic effects immune activation promising therapeutic targets finally show progression understanding role lanthionine synthetase like encompassed nutritional therapeutic advances led development novel oral small molecule therapeutics ibd summarynutritional immunology drug development research centered around immunoregulatory pathways provide safer effective drugs accelerating path cures
established novel feline cell line neoplastic pleural effusion cat cutaneous cell lymphoma immunophenotype staining cells positive alpha iga negative cds alpha igm igg light chain mhc class pcr analysis immunoglobulin heavy chain gene rearrangements revealed monoclonal rearrangement whereas clonal rearrangement cell receptor gamma gene detected southern blotting exogenous feline leukemia virus felv probe revealed integration exogenous felv provirus cell line first felv negative feline cell lymphoma cell line may used investigate pathogenesis spontaneously occurring feline lymphoma development new therapies elsevier rights reserved
biochemical reactions cells involve oxalic acid described shown compound required formation uracil orotic acid former component rna common cells human metabolism basis biochemical reactions described possible treatment relieve effects calcium oxalate renal calculi whose origin related metabolic concentration oxalic acid proposed
glcnac transferase essential mammalian enzyme responsible transferring single glcnac moiety udp glcnac specific serine threonine residues hundreds nuclear cytoplasmic proteins modification dynamic implicated numerous signaling pathways unexpected second function glcnac transferase protease involved cleaving epigenetic regulator hcf also reported recent structural biochemical studies provide insight mechanism glycosylation hcf cleavage described outstanding questions highlighted
backgroundhuman gastric mucosa shows continuous self renewal via differentiation stem cells remain poorly characterized methodswe describe original protocol culture gastric stem progenitor cells adult human stomach molecular characteristics cells studied using taqman low density array qrt pcr analyses using well characterized embryonic stem cells reference epithelial progenitor cells challenged pylori characterize inflammatory response resultsresident gastric stem cells expressed specific molecular markers embryonic stem cells sox nanog oct well others specific adult stem cells particularly lgr show gastric stem cells spontaneously differentiate epithelial progenitor cells challenged pylori epithelial progenitor response pylori showed cag pathogenicity island dependent induction matrix metalloproteinases chemokine cxcl cxcl cxcl ccl interleukine expression conclusionthis study opens new outlooks investigation gastric stem cell biology pathobiology well host pylori interactions
endophytes microorganisms inhabit plant tissues without causing disease endophytes help hosts combat pathogens explored hypothesis plant derived foods consumed humans animals host endophytes also antagonize foodborne pathogens food rotting agents laboratory previously cultured library bacterial endophytes different members maize corn family zea including wild relatives endophytes screened ability antagonize four foodborne pathogens escherichia coli listeria monocytogenes clostridium perfringens salmonella enterica newport food spoiling agent pseudomonas fluorescens using dual culture assays two paenibacillus polymyxa endophytes strains found inhibit growth five deleterious strains agar using conserved polymerase chain reaction primers sequencing beneficial endophytes found encode polymyxin genes suggesting potential antibacterial mechanism action polymyxin production strains confirmed using enzyme linked immunosorbent assay strains originated respectively seeds wild central american maize species zea diploperennis wild ancestor modern maize zea mays ssp parviglumis parviglumis latter direct ancestor modern maize discuss role endophyte may played promoting crop domestication suppressing foodborne pathogens food spoilage agents
pige pixe techniques employed study elemental constituents traditional medicinal plants generally used curing many diseases ailments southwestern nigeria analyses also carried commonly edible vegetables medicinal pharmacological importance pige measurements carried using mev collimated protons van graaff accelerator infn lnl legnaro padova italy whereas pixe measurements carried using mev van graaff accelerator laboratory results show many medicinal plants contain elements cardinal importance human metabolism results vegetables also show presence vital elements needed growth development addition toxic elements include forth detected however recipes contain trace amounts low concentrations calls proper control dose rates samples prevent attendant negative cumulative effects
optimizing different parameters infection efficient agrobacterium mediated transformation system brassica napus developed series combinations optical densities infection durations concentrations acetosyringone silwet evaluated maximum transformation efficiency reached cotyledonary nodes infected min agrobacterium suspension acetosyingone silwet culture medium addition concentrations benzyladenine naphthalene acetic acid also optimized meanwhile maximum transformation efficiency green plantlet cotyledonary nodes cultivated medium containing benzyladenine naphthalene acetic cultivation transformation confirmed polymerase chain reaction analysis southern blotting analysis green fluorescent protein assay
chlorophyll biosynthesis catalyzed two multi subunit enzymes light dependent light independent protochlorophyllide oxidoreductase light independent enzyme consists three subunits chll chln chlb photosynthetic bacteria plastids chlb gene encodes major subunit catalyzes reduction protochlorophyllide chlorophyllide report stable integration chlb gene pinus thunbergii chloroplast genome tobacco using helium driven biolistic gun transplastomic clones developed vitro stable integration homoplasmy transgenes confirmed using pcr southern blotting techniques nodal cuttings homoplasmic transgenic untransformed wild type shoots cultured medium dark expected shoots developed cuttings wild type plants dark showed etiolated growth roots whereas shoots cuttings transgenic plants developed early roots upon shifting dark light growth room leaves transgenic shoots showed early development chlorophyll pigments compared wild type shoots photosynthetically indistinguishable transgenic shoots also showed significant difference root development untransformed wild type shoots cuttings grown light therefore may concluded chlb gene involved directly indirectly root development tobacco gene promotes early development chlorophyll pigments upon illumination dark addition role light independent chlorophyll formation expressed together subunits organisms
current focus delivery personalised precision medicine reflects expectation developments genomics imaging domains extend diagnostic prognostic capabilities enable effective targeting current future preventative therapeutic options clinical benefits approach already realised rare diseases cancer impact management complex diseases type diabetes remains limited may reflect reliance inappropriate models disease architecture based around rare high impact genetic environmental exposures poorly suited emerging understanding type diabetes review proposes alternative palette model centred molecular taxonomy focuses positioning individual respect major pathophysiological processes contribute diabetes risk progression model anticipates many individuals diabetes multiple parallel defects affect several processes one corollary model research efforts least initially targeted towards identifying characterising individuals whose adverse metabolic trajectory dominated perturbation restricted set processes
oriental leafworm moth spodoptera litura major agricultural pest southeast asia nearby pacific regions two distinct trehalases identified insects soluble trehalase treh membrane bound trehalase treh although currently information genes litura characterize distribution function treh cdnas treh proteins cloned litura spolitreh cdna open reading frame nucleotides encodes protein amino acids predicted mass approximately kda isoelectric point spolitreh cdna open reading frame nucleotides encoding protein amino acids mass approximately kda isoelectric point northern blotting analysis revealed spolitreh transcripts midgut fat body tracheae epidermis brain malpighian tubules litura larvae whereas spolitreh transcripts found tissues spolitreh transcripts highly expressed fat body pre pupal stage spolitreh transcripts highly expressed fat body day old larvae instar days pupal stage except day spolitreh spolitreh highly expressed third instar larvae
despite extensive genetics breeding research effective control leaf rust caused puccinia triticina eriks important foliar disease wheat achieved mainly due widespread use race specific seedling resistance genes rapidly overcome new virulent races increased emphasis use race nonspecific adult plant resistance apr genes durable control leaf rust objective study evaluation aegilops tauschii coss genome donor bread wheat apr previously known rich source seedling resistance genes leaf rust geographically diverse collection tauschii maintained wheat genetics resource center evaluated apr field leaf rust composite culture predominant races total tauschii accessions low moderate levels disease severity subsequently tested seedling stage greenhouse four races one composite culture leaf rust nine accessions displayed moderate resistance one races leaf rust seedling stage remaining seedling susceptible accessions potential sources new apr genes accessions afghanistan displayed apr whereas seedling resistance apr common caspian sea region iran azerbaijan apr newly identified tauschii accessions characterized novelty effectiveness race specificity
immunization human platelet alloantigens hpas associated number clinical complications detection identification clinically relevant platelet antibodies important diagnosis management patients affected immune mediated thrombocytopenias human platelet alloantigen frequencies characteristics antiplatelet antibodies vary widely ethnic groups since importance platelet immunology field transfusion medicine gained greater recognition clinical laboratories china laboratories china established improved methods platelet antibody detection hpa genotyping techniques used diagnosis alloimmune platelet disorders clinic research environments research revealed frequencies hpa alleles different chinese ethnic groups compared differences hpa gene frequencies chinese han ethnic groups world production anti isoantibodies important risk factor immune mediated thrombocytopenia chinese population advances research clinical application platelet immunology significantly improved clinical diagnosis treatment including transfusion support prevention alloimmune platelet disorders chinese population published elsevier inc
background proteins read histone code central elements epigenetic control bromodomains bind acetyl lysine motifs increasingly recognized potential mediators disease states notably first bet bromodomain based therapies entered clinical trials broad interest dissecting therapeutic relevance bromodomain containing proteins human disease typically drug development facilitated expedited high throughput screening assays need sensitive robust cost effective scalable however bromodomains lack catalytic activity otherwise monitored using classical enzymology development cell based drug target engagement assays challenging consequently cell biochemical assays lagged behind compared protein families histone deacetylases methyltransferases results present suite novel chromatin histone binding assays using alphalisa situ cell extraction fluorescence based high content imaging first using trim example homogenous bead based alphascreen technology modified biochemical peptide competition assay measure binding trim bromodomain endogenous histone cells alphalisa second target agnostic high throughput imaging platform developed quantify ability chemical probes dissociate endogenous proteins chromatin nuclear structures overall nuclear morphology maintained procedure extracts soluble non chromatin bound proteins cells drug target displacement visualized immunofluorescence microscopy fluorescent proteins pharmacological evaluation assays cross validated utility sensitivity robustness finally using genetic pharmacological approaches dissect domain contribution trim brd atad smarca chromatin binding illustrating versatility utility situ cell extraction platform conclusions summary developed two novel complementary cell based drug target engagement assays expanding repertoire pharmacodynamic assays bromodomain tool compound development assays validated successful trim bromodomain inhibitor program micromolar lead molecule iacs optimized using cell based assays yield first single digit nanomolar trim inhibitor iacs altogether assay platforms described herein poised accelerate discovery development novel chemical probes deliver promise epigenetic based therapies
pharmaceuticals useful treating human diseases excreted environment sometimes original form byproducts human metabolism pharmaceuticals metabolites proven studies harmful non target ecological species may persistent different water matrices regard emergent need eliminate compounds prevent adverse effects aquatic species biodegradation using white rot fungi promising technology removal recalcitrant compounds however products fungal biodegradation also detrimental novel study evaluated ability phanerochaete chrysosporium degrade amlodipine anti hypertensive drug recently found water systems analysis amlodipine metabolites done using quadrupole time flight liquid chromatography mass spectrometry degradation set hours pharmaceutical degradation seen using triple quadrupole liquid chromatography tandem mass spectrometry ninety two significant metabolites value significantly expressed false discovery rate adjustment significance threshold pyridine derivatives identified samples became basis proposed degradation pathway amlodipine study
synthetic biology chemical biology growing field chemical synthesis proteins particularly enzymes makes fundamental contribution however chemical synthesis catalytically active proteins enzymes remains poorly documented difficult obtain enough material biochemical experiments chose calstabin amino acid proline isomerase model synthesized enzyme using native chemical ligation approach obtained several tens milligrams polypeptide refolded properly characterized biophysical properties measured catalytic activity crystallized order obtain tridimensional structure ray diffraction refolded enzyme compared recombinant wild type enzyme addition first step validating whole process incorporated exotic amino acids terminus surprisingly none changes altered catalytic activities corresponding mutants using body techniques avenues open obtain enzymes modified exotic amino acids way barely accessible molecular biology obtaining detailed information structure function relationship enzymes reachable complete chemical synthesis
growing body evidence indicates lysozyme plays significant role indicator many diseases drug treatment infections ulcers study spatial conformation enzyme kinetics molecular immunology therefore highly sensitive determination lysozyme necessary vital wide variety fields work put forward simple effective strategy colorimetric visualization lysozyme based iodide responsive nanoparticles nps well iodide catalyzed tmb tetramethylbenzidine reaction system colorimetric detection applied simplicity fast response analysis high detection limit low costs practicality strategy iodide applied reason induce obvious color change nanoparticles solution gray red along change morphologies nanoparticles irregular spherical consequently phenomenon results colorimetric signal variation iodide catalytic tmb system quite simple biomolecule modification nanoparticles surface purpose colorimetric platform established accurate detection lysozyme could lead change concentration molecular recognition results show modified nps successfully achieved simple selective visualized ultrasensitive detection lysozyme linear range detection limit
although glucocorticoids known elicit functional maturation gastrointestinal tract molecular mechanisms glucocorticoid action developing intestine fully elucidated previous microarray studies identified transcripts rapidly induced jejunum following dexamethasone dex administration suckling mice report specific cellular location subset transcripts mouse pups received dex vehicle intestinal segments collected later robotic based situ hybridization ish performed digoxygenin labeled riboprobes transcripts studied included ndrg sgk fos two unknown genes gene gene predicted ish revealed marked diversity cellular expression small intestinal segments sgk mrna epithelial cells fos mrna confined epithelial cells villus tip ndrg gene mrnas localized epithelial cells upper crypt villus base remaining transcript gene induced modestly villus stroma strongly muscle layers colon ndrg sgk gene induced epithelial cells gene muscle layers fos detectable jejunal segments quantitation ish signals tissue dex treated vehicle treated mice demonstrated mrna increases similar measured northern blotting conclude glucocorticoid action intestine reflects diverse molecular mechanisms operating different cell types quantitative ish valuable tool studying hormone action tissue
artemisia argyi folium used treat skin diseases including eczema dermatitis south korean medicine present study investigated curative effects artemisia argyi folium extract aafe dinitrochlorobenzene dncb induced atopic dermatitis like skin lesions balb mouse model briefly dorsal skin balb mice sensitized three times dncb whereas ears challenged twice repeated treatment dncb induced like lesions effects aafe like lesions evaluated clinical observation histopathological analysis immunohistochemistry enzyme linked immunosorbent assay addition reverse transcription polymerase chain reaction western blotting performed treatment aafe reduced like lesions determined clinical observation histopathological analysis detection serum levels histamine immunoglobulin cytokines regards mechanism action aafe inhibited phosphorylation lck yes related novel tyrosine kinase lyn spleen tyrosine kinase syk mitogen activated protein kinases mapks phosphoinositide kinase pik akt essential roles production various cytokines lymph nodes suppressive activity aafe may due inhibition series immunopathological events including release proinflammatory cytokines results present study strongly suggest aafe exerts anti effect inhibiting lyn syk mapks pik akt pathways therefore aafe may considered effective herbal remedy treatment
induce virus resistance tobacco rice constructed hairpin rna expression system harbouring inverted repeat fragments coat protein cdna potato virus pvy rice stripe virus rsv structures driven three promoters cauliflower mosaic virus camv polyubiqutin gene maize ubi pharbitis nil leucine zipper gene pnzip different tissue specific activity pvy resistance ratios transgenic tobacco plants harboring pvy pubi pvy ppnzip pvy rsv resistance transgenic rice plants harboring rsv pubi rsv ppnzip rsv northern blotting gus assay demonstrated virus resistance levels related promoter activity therefore choice effective tissue specific promoter reinforce transcription hprnas favour cultivation highly virusresistant transgenic plants
discovery importance kinase activity relationship emergence proliferation cancer cells due changes normal physiology opened remarkable pathway treatment chronic myelogenous leukemia intense search drug candidates six abl kinase inhibitors received fda approval chronic myelogenous leukemia treatment continuous efforts obtaining new effective selective molecules carried herein discuss mechanisms abl inhibition structural features ligand protein interactions important design new abl kinase inhibitors review provides broad overview binding mode predictions molecular docking approach discover novel abl kinase inhibitors
horizontal gene transfer may occur distantly related bacteria thus leading genetic plasticity cases acquisition novel resistance traits proteus mirabilis enterobacterial species responsible human infections may express various acquired beta lactam resistance genes including different classes carbapenemase genes report proteus mirabilis clinical isolate strain displaying resistance penicillin including temocillin together reduced susceptibility carbapenems susceptibility expanded spectrum cephalosporins using biochemical tests significant carbapenem hydrolysis detected mirabilis since pcr failed detect acquired carbapenemase genes commonly found enterobacteriaceae used whole genome sequencing approach revealed presence bla oxa class carbapenemase gene far identified acinetobacter species gene located element coharboring bla ampc like gene remarkably two genes bracketed putative xerc xerd binding sites inserted xerc xerd site located terminase like small large subunit genes bacteriophage increased expression two bla genes resulted time tandem amplification element revealed southern blotting first isolation clinical mirabilis strain producing oxa class carbapenemase first description xerc xerd dependent insertion antibiotic resistance genes within bacteriophage study revealed new role xerc xerd recombinase bacteriophage biology
iron sulfur clusters oldest versatile inorganic cofactors required sustain fundamental life processes bacteria three systems cluster biogenesis designated isc nif suf contrast thermus thermophiles one system formed mostly suf homologs contain six proteins sufa sufb sufc sufd sufs sufe kinetics sufc atpase studied using linked enzyme assay method presence sufb sufd sufbd complexes activity sufc enhanced cysteine desulfurase activity sufs also stimulated presence sufbcd complex results obtained enzymology revealed aconitase activity activated clusters reconstituted sufbcd complex consolidated results spectral enzymatic analysis suggest sufbcd complex novel type scaffold system assemble clusters novo elsevier inc rights reserved
prospect consistent computer aided refinement stereoselective enzymes explored simulating hydrolysis enantiomers substituted ester wild type mutant candida antarctica lipase using several strategies particular focused use empirical valence bond evb method quantitative screening enantioselectivity evaluate kcat kcat stereoisomers found extensive sampling essential obtaining converging results requirement points towards possible problems approaches use limited conformational sampling however performing proper sampling appears give encouraging results offer powerful tool computer aided design enantioselective enzymes also explore faster strategies identifying mutations help augmenting directed evolution experiments approaches require refinement
understand exceptional high grain calcium accumulation finger millet grains calmodulin cam gene strongly expressed developing spikes high grain calcium genotype characterized using race full length cam open reading frame orf isolated deduced protein sequence showed presence four characteristic motifs phylogenetic analysis showed finger millet cam eleusine coracana calmodulin eccam identical rice cam southern hybridization showed presence least four copies cam gene might located different regions finger millet aabb genome immunodetection using monospecific polyclonal anti eccam antibodies revealed eccam localized embryo aleurone layer accumulates higher amounts high grain calcium genotype compared low grain calcium genotype furthermore silico analysis showed eccam interacts aquaporin indicates calcium probably delivered developing spike via mass flow water results indicate higher expression cam might cause greater stimulation downstream calcium transport machinery operative aleurone layer leading higher calcium accumulation grains high grain calcium genotype
quercetin polyphenol potential health effects absorbed humans measurement plasma used biomarker intake however chemical nature quercetin blood still known although one possibility glucosides found unchanged form original food propose existence quercetin glucosides plasma unlikely since metabolic beta glucosidase capacity small intestine liver great quercetin glucosides escape deglycosylation critically examine limited number studies purport detect quercetin glycosides blood current evidence absorption compounds gastrointestinal tract emphasise need comprehensive identification circulating compounds since polyphenol glucuronides expected metabolites plasma almost identical chromatographic properties glucosides acid studies nature quercetin metabolites plasma urgently needed proposed biological activities quercetin assessed suitable biomarker exposure established
continued improvements next generation dna rna sequencing coupled advances gene annotation provided researchers access plethora annotated genomes subsequent analyses orthologous gene structures identified numerous intron gain loss events occurred recently distant past research afforded exceptional insight temporal lineage specific rates intron gain loss among various species throughout evolution numerous studies also attempted identify molecular mechanisms intron gain loss however even considerable effort little known processes particular mechanism intron gain proven exceptionally enigmatic remain topics considerable debate currently exists definitive consensus mechanism may generate introns many introns known affect gene expression necessary understand molecular process introns may gained review seven commonly purported mechanisms intron gain possible summarize molecular evidence occurrence mechanisms furthermore catalogue indirect evidence supports occurrence mechanism finally proposed mechanisms fail explain mechanistic origin many recently gained introns also look trends may aid researchers identifying potential mechanism intron gain
immunoglobulin gamma igg antibodies key effector proteins immune system recognize antigens high specificity indispensable immunological memory following pathogen exposure vaccination constant crystallizable fragment igg molecules mediates antibody effector functions complement dependent cytotoxicity antibody mediated cellular cytotoxicity antibody dependent cell mediated phagocytosis functions regulated single linked biantennary glycan heavy chain resides hinge region presence specific sugar moieties glycan profound implications igg effector functions emerging knowledge glycans contribute igg structure functions opened new avenues therapeutic exploitation defined antibody glycoforms treatment cancer autoimmune diseases review recent advances understanding proinflammatory igg effector functions regulation glycans
background arabidopsis thaliana widely used model organism plant biology although agronomic significance offers important advantages basic research genetics molecular biology including availability large number mutants genetically modified lines however arabidopsis seed longevity limited seeds stored years usually show low capacity germination results influence ultrasonic stimulation investigated germination thaliana seeds experiments performed using frequency khz constant temperature degrees germination rate differences observed using freshly collected seeds however using artificially deteriorated seeds results show short ultrasonic stimulation min significantly increased germination ultrasonic stimulation application optimal treatment significant increase germination rate also verified naturally aged seeds ultrasonic stimulation scanning electron microscopy observations showed increase presence pores seed coat sonication may cause least part increase germination ultrasound treated seeds developed normally mature fertile plants conclusions ultrasound technology used enhance germination process old arabidopsis seeds without negatively affecting seedling development effect seems least part due opening pores seed coat use ultrasonic stimulation arabidopsis seeds may contribute recovering long time stored lines
micrornas mirnas small non coding rnas execute regulation gene expression post transcriptional level information turmeric mirnas rare present study identified conserved non conserved mirna families high throughput illumina sequencing downstream silico analysis could also identify novel candidate mirnas specific turmeric selected mirnas validated stem loop pcr northern blotting targets predicted identified mirnas found involved plant growth development stress response metabolism expression pattern selected conserved mirnas response drought stress analyzed stem loop qrt pcr first report mirna content turmeric transcriptome might serve foundation future work mirna based gene regulation medicinally important spice crop
background allergy immunotherapy result systemic allergic reactions even life threatening anaphylaxis requiring epinephrine administration objective objective study describe epinephrine use clinical trial development programs rapidly dissolving sublingual immunotherapy tablets slittablets merck inc kenilworth alk horsholm denmark torii pharmaceutical ltd tokyo japan methods data epinephrine use collected timothy grass slit tablet trials bioequivalent allergen units dose placebo short ragweed slit tablet trials amb placebo house dust mite hdm slit tablet trials hdm placebo results grass slit tablet trials epinephrine used times grass slit tablet placebo eight administrations grass slit tablet related adverse events aes systemic allergic reactions local mouth throat swelling ragweed slit tablet trials epinephrine used times subjects ragweed slit tablet placebo administrations protracted anaphylaxis four administrations ragweed slit tablet related aes systemic allergic reaction local mouth pharynx throat swelling hdm slit tablet trials epinephrine administered times hdm slit tablet placebo four administrations hdm slittablet related aes systemic allergic reaction local events epinephrine administrations events related slit tablet treatment occurred within first week treatment administrations day subject self administered conclusions epinephrine administrations response slit tablet related reactions clinical trials uncommon typically occur within first week treatment rarely self administered slit tablet related events treated epinephrine nonserious american academy allergy asthma immunology
cytomegalovirus cmv infection occurs frequently young children infected major source transmission oral cmv shedding infants primary infection comprehensively characterized using quantitative polymerase chain reaction weekly months three phases oral shedding identified expansion transition clearance viral expansion occurred median weeks median doubling time days transition phase expansion slowed median weeks peak viral load reached clearance slow day median half life shedding resolve observation infant mathematical modeling demonstrated prolonged oral cmv expansion explained low within host reproduction number median delayed immune response decreases infected cell half life thus prolonged oral cmv shedding observed primary infection explained slow viral expansion inefficient immunologic control
specificity enzymes respective substrates focal point enzyme kinetics since initial characterization metabolic chemistry various processes quantify enzyme specificity using kinetics utilized decades fersht definition ratio cat two different substrates specificity constant ref based premise important specificity existed substrates competing reaction become consensus standard enzymes obeying michaelis menten kinetics expansion theory determination relative specificity constants large number competing substrates present combinatorial library single reaction mixture developed contribution ratio cat isotopologs also become standard mechanistic enzymology kinetic isotope effects measured development internal competition experiments extreme precision contribution extends theory kinetic isotope effects internal competition three isotopologs present non tracer concentrations reaction mix article part special issue titled enzyme transition states theory experiment published elsevier
lepidopteran ostrinia furnacalis one serious pests maize production cryc proteins group bacillus thuringiensis proteins toxic intestine insects overexpression cryc protein led increased resistance lepidopteran pests several crops present study synthetic cryc gene previously tested rice introduced maize genotypes via biolistic gun mediated transformation total nine independent putative callus obtained transgenic plants positive cryc according polymerase chain reaction pcr analysis three highly insect resistant transgenic plants zmkc zmkc zmkc confirmed pcr analysis field assessment genomic southern blotting generations insect bioassays conducted field laboratory showed progeny three transgenic lines significantly resistant lepidopteran maize pests whole development growth period stable integration expression cryc three transgenic plants progeny confirmed reverse transcription pcr pcr enzyme linked immuno sorbent assay elisa methods hybrids produced crossing transgenic line zmkc elite inbred line zheng small variation among hybrids backcross offspring indicating cryc transgenic lines used produce insect resistant hybrids served insect resistant sources development maize
micrornas mirnas play critical roles post transcriptional gene regulation act important endogenous regulators various stressors ultraviolet radiation major factor influencing crop growth development study isolated novel wheat mirna named tae mir confirmed expression diversity treatments additionally using northern blotting technique found six mirnas highly responsive stress wheat six mirnas mir mira mir significantly upregulated remaining three mirnas downregulated different time points treatment result indicates mirnas may involved regulation targets induction stress furthermore promoter analysis responsive mirna genes revealed light relevant cis elements box box taken together results study suggest wheat mirnas play important roles response stress
gastrointestinal stromal tumors gists mesenchymal tumors distinguished driver mutations proto oncogenes kit pdgfra cases mutations linked response imatinib multikinase inhibitor independent prognostic impact describe prospective study molecular characteristics gists french adult patients analyzed routinely national hospital program molecular cancer diagnosis patients gists diagnosed university hospital besancon august october prospectively included present study kit pdgfra kras codons well braf codon mutations analyzed sanger sequencing snapshot kit pdgfra mutations detected cases respectively total different mutations detected never described expected kit exon pdgfra exon mutations associated small bowel gastric localizations respectively mutation found kras braf molecular studies critical improve management gists study enhances current knowledge describing new mutations kit common molecular pattern kit exon substitutions also described first time study significance remains unknown since genetic environmental risk factors favoring development gists dna repair defects exposure carcinogens currently known
short chain fatty acids acetic propionic butyric lactic acids typical primary fermentation products anaerobic feeding chain fifteen years ago novel fermentation type discovered obligately anaerobic deltaproteobacterium syntrophus aciditrophicus fermentative growth crotonate benzoate acetate formed oxidative branch cyclohexane carboxylate reductive branch cases cyclohexa diene carboxyl coa coa central intermediate either formed class benzoyl coa reductase fermentation benzoate reverse reactions benzoyl coa degradation pathway fermentation crotonate summarize current knowledge enzymology involved fermentations yielding cyclohexane carboxylate excreted product characteristic enzymes involved two acyl coa dehydrogenases specifically acting coa cyclohex ene carboxyl coa enzymes also employed syntrophic growth aciditrophicus cyclohexane carboxylate carbon source coculture methanogen investigation anabolic pathways aciditrophicus revealed rather unusual pathway glutamate synthesis involving citrate synthase future work address unresolved question concerning components involved reoxidation nadh formed oxidative branch unique cyclohexane carboxylate fermentation pathway aciditrophicus karger basel
background drug ontology dron owl based representation drug products ingredients mechanisms action strengths dose forms originally created dron use cases comparative effectiveness research primarily identify historically complete sets united states national drug codes ndcs represent packaged drug products ingredient mechanism action contained products although designed dron outset carefully distinguish entities therapeutic indication entities molecular mechanism action previously represented dron particular therapeutic indication results work add therapeutic indications three research use cases resistant hypertension malaria opioid abuse research also added mechanisms action opioid analgesics added classes representing drug products response large term request program resistance immunology surveillance modeling malaria uganda prism project net result new version dron current may represents three major therapeutic classes drugs six new mechanisms action conclusions therapeutic indication drug product represented therapeutic function dron adverse effects drug products well therapeutic uses drug product designed dispositions work provides framework representing additional therapeutic indications adverse effects uses drug products beyond design work also validated past modeling decisions specific types mechanisms action namely effects mediated via receptor enzyme binding dron available http purl obolibrary org obo dron owl smaller version without ndcs available http purl obolibrary org obo dron dron lite owl
concept functional neutrophil subsets new clinical significance malignancies unknown study investigated role dim cdl high high cdl high high cdl dim neutrophil subsets head neck squamous cell carcinoma hnscc patients neutrophil subsets may play different roles immune related activity cancer based profile activation state migration ability within tumor site may important predicting cancer prognoses tumor biopsies blood obtained newly diagnosed untreated hnscc patients healthy controls neutrophil subsets phenotype characterized using flow cytometry isolated granulocytes assessed anti tumor immune functions compared controls hnscc patients exhibited increased high cdl dim neutrophils blood subset displayed distinct phenotypes high expression cdb subset prone migrate tumor facilitated tumor derived furthermore also found activate neutrophils thereby promoting subset transition various assays demonstrated activated high cdl dim neutrophils inhibited migration proliferation induced apoptosis fadu cancer cells neutrophil elastase detected activated high cdl dim neutrophils tumor biopsies suggested high cdl dim neutrophils impart anti tumoral activity via neutrophil extracellular traps furthermore increased fraction high cdl dim neutrophils shown correlate increased survival rate study demonstrates clinical relevance high cdl dim neutrophil subset providing evidence increased migration capacity anti tumor activity including increased net formation finally correlation increased survival hnscc patients new evidence growing distinct neutrophil subsets diverse roles cancer immunology clinical link remains established study demonstrates clinical relevance high cdl dim neutrophil subset head neck squamous cell carcinoma hnscc patients harbored increased fraction anti tumorigenic high cdl dim neutrophils circulation compared healthy controls subset enhanced capacity elicit neutrophil extracellular traps nets extrusion increased fraction high cdl dim neutrophils circulation correlated increased survival findings demonstrate anti tumoral role high cdl dim neutrophil subset hnscc
optogenetics technique exploded last years revolutionized several areas biological research brightest side technology use light modulate non invasively high spatial resolution millisecond time scale excitable cells genetically modified express light sensitive microbial ion channels opsins neuroscience first benefited fascinating strategy intact organisms shining light specific neuronal subpopulations optogenetics allowed unearth mechanisms involved cell cell communication within context intact organs brain formed complex neuronal circuits recently scientists looked optogenetics tool answer questions remained dark cardiovascular physiology review focus application optogenetics study heart complex multicellular organ homing different populations excitable cells spatially functionally interconnected moving first proof principle works published present time discuss vitro vivo applications optogenetics study electrophysiology different cardiac cell types dissection cellular mechanisms underlying arrhythmias also present molecular biology technology foster evolution cardiac optogenetics aim understanding fundamental questions cardiac physiology pathology finally confer therapeutic potential biotechnological strategy treatment heart rhythm disturbances cardiac pacing cardioversion elsevier inc rights reserved
antisynthetase syndrome ass recognized subgroup idiopathic inflammatory myopathies iims associated autoantibodies directed aminoacyl transfer ribonucleic acid trna synthetase enzymes report first case anti anti ssa ass presenting acute digital ischemia association described previously occlusive vasculopathy rare serious manifestation seen presentation patients ass may herald onset severe interstitial lung disease ild comprehensive evaluation performed confirm presence subclinical myositis extensive myositis specific antibody testing strongly recommended even initial screening autoimmune serologies unrevealing
insulin like growth factor igf functions neuroprotective hormone may protect cognitive impairment may occur result sevoflurane exposure aim present study assess effect sevoflurane production igf investigate molecular mechanisms underlying regulation brl rat hepatocyte cell line adult mice exposed minimal alveolar concentrations sevoflurane igf microrna levels quantified using enzyme linked immunosorbent assay western blotting reverse transcription quantitative polymerase chain reaction analyses importance microrna regulation igf sevoflurane investigated using microrna inhibitor sevoflurane treatment reduced igf levels simultaneously upregulated microrna expression levelsin rat hepatocytes adult mice inhibition microrna attenuated effect therefore sevoflurane may reduce synthesis igf upregulating microrna expression
moyamoya disease chronic cerebrovascular occlusive disease characterized progressive stenosis terminal portion internal carotid artery main branches occurrence moyamoya disease related immune genetic factors though research moyamoya disease made great strides past years etiology pathogenesis largely unknown review focus genetic pathogenic inflammation factors moyamoya disease
geotrichum candidum yeasts proposed starter culture malting double positive effect process eliminate fungal pathogenic microflora improve technological properties finished product malt among published research little information found considering biosynthesis hydrolytic enzymes data related production lipases proteases cellulases paper examines enzymology number candidum strains main focus within evaluation process placed whole cell barley grain cultivation hydrolase present cell wall degradation found satisfactory level tested strains produced glucanases glucanases capable hydrolysing barley glucan reducing amount polysaccharide wort molecular analysis tested strains use restriction fragment length polymorphism polymerase chain reaction randomly amplified polymorphic dna confirmed species affiliation also genetic similarity tested strains copyright institute brewing distilling
micrornas mirnas tiny ribo regulatory molecules involved various essential pathways persistence cellular life development environmental adaptation stress response recent years mirnas become major focus molecular biology functional diagnostic importance interest mirna research resulted development many specific software pipelines identification mirnas specific targets key elucidation mirna modulated gene expression well recognized importance mirnas clinical research pushed emergence many useful computational identification approaches animals available software pipelines fewer plants additionally existing approaches suffers mis identification annotation plant mirnas since mirna mining process plants highly prone false positives particularly cereals highly repetitive genome group developed homology based silico mirna identification approach plants utilizes two perl scripts sumirfind sumirfold since method helped identify many mirnas particularly crop species triticum aegliops herein describe comprehensive updated guideline implementation two new scripts sumirpredictor sumirlocator refinements previous method order identify genuine mirnas increased sensitivity consideration mirna identification problems plants recent updates enable method provide reliable precise results automated fashion addition solutions elimination false positive predictions mirna naming mirna mis annotation also provides comprehensive view genome transcriptome wide location mirna precursors well association transposable elements sumirpredictor sumirlocator scripts freely available together reference high confidence plant mirna list
enzymology tends focus highly specific effects substrates allosteric modifiers products occurring low concentrations informative enzyme catalytic mechanism hypothesized relatively high vivo concentrations important molecular monitors state living cells atp affect multiple enzymes former interactions gone unnoticed enzymology test hypothesis terms effect atp adp amp might major free energy delivering pathway yeast saccharomyces cerevisiae assaying cell free extracts collected comprehensive set quantitative kinetic data concerning enzymes glycolytic ethanol fermentation pathways determined systematically extent enzyme activities depend concentrations adenine nucleotides found effects adenine nucleotides enzymes catalysing reactions directly involved substrate product substantial includes effects michaelis menten constants adding new perspective years introduction published elsevier behalf federation european biochemical societies
megacystis microcolon intestinal hypoperistalsis syndrome mmihs congenital visceral myopathy characterized severe dilation urinary bladder defective intestinal motility genetic basis mmihs ascribed spontaneous autosomal dominant mutations actin gamma actg smooth muscle contractile gene however evidence suggesting recessive origin disease also exists using combined homozygosity mapping whole exome sequencing genetically isolated family found carry premature termination codon leiomodin lmod gene preferentially expressed vascular visceral smooth muscle cells parents heterozygous mutation exhibited abnormalities child homozygous premature termination codon displayed symptoms consistent mmihs used crispr cas crispr associated protein genome editing lmod generate similar premature termination codon mice homozygous mutation showed loss lmod protein pathology consistent mmihs including late gestation expansion bladder hydronephrosis rapid demise parturition loss lmod resulted reduction filamentous actin elongated cytoskeletal dense bodies impaired intestinal smooth muscle contractility results define lmod disease gene mmihs suggest role establishing normal smooth muscle cytoskeletal contractile coupling
background emerging evidences verified long non coding rnas lncrnas play important regulatory roles pathogenesis progression cancers lncrnas metastasis associated lung adenocarcinoma transcript malat found regulated human cancers main objective study investigate expression level biological function malat gastric cancer methods quantificational real time polymerase chain reaction qrt pcr performed detect mrna levels malat paired gastric carcinoma tissues adjacent normal tissues associations malat expression clinicopathological features analyzed prognosis gastric carcinoma patients evaluated hmgb mrna protein expressions detected qrt pcr western blot analysis luciferase reporter assay used determine mir target malat results study demonstrated malat regulation tissues compared adjacent normal tissues higher malat expression correlated local invasion lymph node metastasis tnm stage patients higher malat expression predicted shorter survival poor prognosis functionally revealed malat promoted cells proliferation invasion mechanistically results demonstrated malat negatively correlation mir functioned molecular sponging mir antagonizing ability suppress hmgb expression conclusions taken together results demonstrated malat mir hmgb axis acted critical regulator pathway tumorigenesis progression provided novel therapeutic target gastric cancer
background clostridium difficile rate symptomatic patients represents difficile infection cdi colonization predict extent cdi overdiagnosis compared asymptomatic colonization rate symptomatic positivity rate hospitalized patients using nucleic acid testing methods july april formed stool samples collected asymptomatic patients admission hospital wards stanford hospital stool samples symptomatic patients suspected cdi wards collected testing per provider order genexpert difficile tcdb polymerase chain reaction pcr assay cepheid sunnyvale usa performed stool samples pcr cycle threshold used measure genomic equivalents chart review performed obtain clinical history medication exposure results found asymptomatic difficile carriage rate confidence interval positivity rate symptomatic patients median pcr cycle thresholds significantly different asymptomatic carriers symptomatic positives versus among asymptomatic patients carriers noncarriers subsequently became symptomatic cdi suspects within hospitalization single multivariate analysis identify demographic clinical factors significantly associated difficile carriage conclusions asymptomatic difficile carriage rate similar symptomatic positivity rate suggests majority pcr positive results symptomatic patients likely due difficile colonization disease specific biomarkers needed accurately diagnose patients difficile disease elsevier inc rights reserved
zika virus zikv family flaviviridae genus flavivirus rapidly expanding global pathogen associated severe clinical manifestations including devastating neurological disease infants currently molecular clones new world zikv available lack significant attenuation hindering progress toward understanding determinants transmission pathogenesis report development characterization novel zikv reverse genetics system based isolate puerto rico prvabc generated two plasmid infectious clone system infectious virus rescued replicates human mosquito cells growth kinetics representative wildtype zikv infectious clone derived virus initiated infection transmission rates aedes aegypti mosquitoes comparable primary isolate displayed similar pathogenesis mice infectious clone system provides valuable resource research community explore zikv molecular biology vaccine development antiviral development diagnostics vector competence disease pathogenesis importance zikv rapidly spreading mosquito borne pathogen linked guillain barre syndrome adults congenital microcephaly developing fetuses infants zikv also sexually transmitted viral molecular determinants phenotypes well understood reverse genetics system available current epidemic virus allow researchers study zikv immunity develop novel vaccines develop antiviral drugs provide novel infectious clone system generated recent zikv isolated patient infected puerto rico infectious clone produces virus vitro vivo characteristics similar primary isolate providing critical tool study zikv infection disease
wharton jelly mesenchymal stem cells wjmscs increasingly recognized ectodermal differentiation potential previously demonstrated wjmsc seeded onto acellular matrix material derived wharton jelly cultured osteogenic induction media generated positive cells hair like structures indicative ectodermal differentiation wjmscs manuscript examine underlying mechanism behind observation using variety microscopy molecular biology techniques western blotting qpcr demonstrate hair like structures associated live cells positive epithelial mesenchymal markers cytokeratin alpha smooth muscle actin respectively also show regulation beta catenin noggin along expression tgf beta smad inhibition bmp could mechanism behind ectodermal differentiation hair like structure formation elsevier inc rights reserved
improve transformation efficiency wheat triticum aestivum mediated agrobacterium tumefaciens explored possibility employing basal portion wheat seedling shoot apical meristem explants three genotypes wheat transformed tumefaciens carrying beta glucanase gene vernalization seeds transformed germinated seedlings grew similar coleoptile half cotyledon cut basal portions infected tumefaciens total transgenic plants obtained average transformation efficiency high evident segregation occurred plants indicated pcr southern blotting analysis investigation plants revealed transformed plants higher resistance powdery mildew controls northern blotting revealed beta glucanase gene normally expressed plants showed increased resistance powdery mildew results indicate exogenous gene successfully integrated genome wheat transmitted expressed transgenic progeny results concluded agrobacterium inoculum basal portion wheat seedling highly efficient dependable transformation method developed practicable method transfer target gene wheat
broader scale cell density localization colorectal cancer liver metastases prognostic predictive implications cell distribution higher resolutions fully investigated detailed resolution analysis cell distribution performed patient tissues divided distance classes tumor border adjacent normal liver thereby distinct density patterns cell localization relation malignant tissue could detected distance tumor decrease cells common within area cytotoxic granzyme cells found significantly reduced well macrophages increased identified close contact cells data suggests physical functional border within region survival analysis revealed improved overall survival patients high cells numbers direct tumor border interestingly decreased cells region also found significantly associated improved survival consequently detailed localization cells despite blockade could associated improved clinical outcome high resolution analysis represents new insights relevant heterogenous cell distributions especially related clinical responses paradoxical observation localization dependent prognostic relevance cell densities detectable detailed spatial analyses investigation spatial profiles higher resolutions suggested new biomarker survival response therapies
iron essential element plant growth development playing important roles variety cellular activities including cell respiration chlorophyll biosynthesis dna synthesis chloroplasts iron essential photosynthetic electron transport functions cofactor superoxide dismutases thus iron homeostasis critical chloroplast plant development better understand mechanisms iron transported chloroplasts cloned characterized nicotiana tabacum homolog atpic chloroplast iron transporter arabidopsis thaliana ntpic expressed many tissues tobacco plant encoded protein localized chloroplast envelope southern blotting indicated single copy ntpic tobacco genome moreover yeast complementation assays suggested ntpic transports iron used rna interference downregulate ntpic transgenic plants resulted albinism dwarfism iron deficient chloroplasts chloroplast exhibited ultrastructural defects ntpic overexpression resulted deep green leaves elevated levels chlorophyll densely packed chloroplasts accumulation iron starch grains within chloroplasts addition ntpic influenced expression genes involved iron transport iron storage iron oxidative stress biogenesis iron sulfur proteins results suggest ntpic transports iron chloroplasts regulates iron homeostasis influences plant development
aging main risk factor many degenerative diseases declining health senescent cells part underlying mechanism time dependent tissue dysfunction cells negatively affect neighbouring cells altered secretory phenotype senescence associated secretory phenotype sasp sasp induces senescence healthy cells promotes tumour formation progression contributes age related diseases atherosclerosis immune senescence neurodegeneration removal senescent cells recently demonstrated delay age related degeneration extend lifespan better understand cell aging reap benefits senescent cell removal necessary reliable biomarker identify cells following introduction cellular senescence discuss several classes biomarkers context utility identifying removing senescent cells tissues although senescence induced variety stimuli senescent cells share characteristics enable identification vitro vivo nevertheless may prove difficult identify single biomarker capable distinguishing senescence cell types therefore comprehensive review senescence biomarkers rather outlook technologies markers suitable identify isolate senescent cells crown copyright published elsevier rights reserved
introduction connective tissue growth factor ctgf ccn shown previously aberrantly expressed high proportion paediatric precursor cell acute lymphoblastic leukaemia pre suggesting potential oncogenic role tumour type therefore assessed ctgf mrna transcript diversity lineage using primary patient specimens cell lines methods ctgf mrna expression evaluated quantitative real time pcr northern blotting performed structural analysis ctgf mrna nested reverse transcriptase pcr examined ctgf protein diversity immunoblotting results northern blot analysis pre cell lines revealed short ctgf transcripts expressed association active phase cellular growth structural analysis confirmed synthesis several novel ctgf mrna isoforms lineage cell lines uniformly characterised retention coding sequence terminal domain one novel spliceforms expressed majority primary pre patient specimens positive canonical ctgf mrna evidence alternative transcripts coding potential provided cryptic ctgf proteins predicted size detected immunoblotting conclusion study identifies first time alternative splicing ctgf gene shows short ctgf splice variant associated cell proliferation expressed cases primary ctgf positive pre novel variant encoding domain may play role pre tumorigenesis progression elsevier ltd rights reserved
feasibility cyclo trp tyr peptide nanotubes pnts oral gene delivery carriers investigated nude mice eight doses pcmv lacz days intervals association dna pnts dnase stability pnts associated dna vitro permeability dna estimated results showed cyclo trp tyr pnts self associated concentrations plasmid dna associated pnts binding constant calculated fluorescence quenching assay pnts able protect dna dnase acid bile digestion min min min respectively vitro duodenal apparent permeability coefficient pcmv lacz calculated steady state flux increased naked dna pcmv lacz pnt formulation permeation pcmv lacz formulated pnts found energy dependent process furthermore beta galatosidase beta gal activity tissues quantitatively assessed using chlorophenol red beta galactopyranoside cprg significantly increased kidneys stomach duodenum liver respectively first dose oral delivery pcmv lacz pnt formulation organs beta gal activity confirmed presence pcmv lacz dna southern blotting analysis intracellular tracing rhodamine labeled dna presence mrna reverse transcription real time quantitative pcr qpcr another plasmid pcmv hrluc encoding renilla reniformis luciferase used confirm results increased hrluc mrna luciferase stomach duodenum liver kidney detected qpcr vivo bioluminescence imaging luciferase activity quantification immunostaining respectively
three genes gnd pgl fbp relevant pentose phosphate pathway ppp overexpressed corynebacterium glutamicum iwj leading increase isoleucine production transcriptional levels gnd pgl fbp significantly increased iwj pdxw gnd fbp pgl compared control strain iwj pdxw intracellular nadph nadp ratios iwj pdxw gnd iwj pdxw gnd fbp cells grown increased threefold fourfold respectively indicating overexpression gnd fbp redirected carbon flux ppp intracellular nadph nadp ratio iwj pdxw gnd fbp pgl grown similar iwj pdxw suggesting nadph produced ppp could quickly consumed isoleucine production isoleucine produced iwj pdxw gnd fbp pgl shake flask cultivation fed batch fermentation respectively addition iwj pdxw gnd fbp pgl grew fast dry cell weight reached whereas start strain iwj pdxw reached fermentation isoleucine yield glucose iwj pdxw gnd fbp pgl reached results demonstrate carbon flux redirection ppp efficient approach enhance isoleucine production glutamicum international union biochemistry molecular biology inc volume number pages
limonene efficacy preclinical models breast cancer causing carcinomas regress little host toxicity performed pilot study healthy human volunteers identify plasma metabolites limonene assess toxicity supradietary quan titles limonene seven subjects ingested limonene custard blood drawn chemistry panel analysis limonene metabolite analysis line capillary gas chromatography mass spectrometry analysis indicated least five compounds present present time zero two major peaks identified rat limonene metabolites dihydroperillic acid perillic acid two minor peaks found respective methyl esters acids third major peak identified limonene diol limonene minor component dose limonene caused gradable toxicity limonene metabolized humans rats similar manner observations high therapeutic ratio limonene chemotherapy rodent cancers suggest limonene may efficacious chemotherapeutic agent human malignancies
amaryllidaceae alkaloids example vast diversity secondary metabolites great therapeutic promise identification novel compounds group known structures continues area active study recent identification norbelladine methyltransferase nomt amaryllidaceae alkaloid biosynthetic enzyme assembly transcriptomes narcissus aff pseudonarcissus lycoris aurea highlight potential discovery amaryllidaceae alkaloid biosynthetic genes new technologies recent technical advances interest include enzymology next generation sequencing genetic modification nuclear magnetic resonance spectroscopy mass spectrometry
background infections multidrug resistant gram negative bacteria mdr gnb continuously growing pose challenge health institution globally carbapenem resistant enterobacteriacea cre identified one mdr gnb limited treatment options higher mortality compared sensitive strains report increased burden cre fecal carriage hospital north eastern region malaysia methods retrospective descriptive study august december conducted medical microbiology parasitology laboratory hospital universiti sains malaysia tertiary teaching hospital beds hospital treats patients various medical surgical conditions suspected cre clinical specimens received laboratory identified confirmed using standard protocols polymerase chain reaction pcr assay performed determine genotype results altogether enterobacteriaceae isolated various clinical specimens study period cre majority isolated cre klebsiella klebsiella pneumoniae predominant species cre mainly isolated rectal swab screening urine blood tracheal aspirate one hundred thirty six isolates subjected genotype determination showed positive detection new delhi metallo beta lactamase ndm gene bla ndm conclusion study noted high numbers cre isolated especially rectal swabs active screening results significant cost pressures therefore revisited revised especially low resource settings
anti antibody trastuzumab herceptin used treat patients breast cancers overexpress demonstrated kip upregulation one key events cause arrest upon trastuzumab treatment examined effect trastuzumab expression cdk npat histone breast cancer cells overexpress trastuzumab treatment dramatically inhibited kinase activity expression cdk whereas kinase activity expression cdk affected unlike kip upregulation occurs primarily post translational mechanisms cdk downregulated primarily transcriptional level shown northern blotting real time pcr analyses decrease cdk activity trastuzumab decreased kinase activity cyclin little effect cyclin protein level overexpression wild type cyclin lower molecular weight forms influence response trastuzumab levels activities cdk cyclin cyclin suppressed trastuzumab result trastuzumab inhibited phosphorylation associates cdk cyclin cdk cyclin cyclin predicted changes trastuzumab decreased dna binding activity decreased level npat protein decreased level histone mrna blockade pik pathway produced similar effects trastuzumab treatment expression genes taken together treatment breast cancer cells overexpress anti antibody trastuzumab inhibits cdk phosphorylation activity npat histone via pik signaling needed dna histone synthesis progression phase phase cell cycle
marine photosynthetic bacterium rhodovulum sulfidophilum produces extracellular nucleic acids involved flocculation previously showed rna fraction extracellular nucleic acids released culture medium contains mainly non aminoacylated fully mature sized trnas fragments rrnas report characterization extracellular dna production cultivation differences detected nucleotide sequence intracellular dna extracellular soluble dna southern blotting whole intracellular dna seemed released cell bacterial floc degraded deoxyribonuclease ribonuclease treatment indicating least extracellular dna rnas floc involved maintenance floc cultivated nutritionally rich medium bacteria formed small flocs produced large amounts extracellular dna solubilized medium nutritionally poor medium however huge flocs cells appeared almost extracellular soluble dna observed medium floc degraded deoxyribonuclease treatment seems likely extracellular soluble dna observed rich medium may incorporated large floc play role floc maintenance poor medium addition inhibitor quorum sensing alpha cyclodextrin inhibited huge floc maintenance nutritionally poor medium presence alpha cyclodextrin floc rapidly degraded extracellular soluble dna production increased
tetrahydropyran rings common feature complex polyketide natural products much remains learned enzymology formation enzyme salbiii salinomycin biosynthetic pathway resembles polyether epoxide hydrolases cyclases monb family salbiii plays role conventional cascade ring opening closing mutation salbiii gene gave metabolite ringa formed using metabolite invitro substrate analogue salbiii shown form pyran ringa determined ray crystal structure salbiii structure guided mutagenesis putative active site residues identified asp asp essential catalytic dyad demonstrated pyran synthase activity salbiii extends impressive catalytic versatility barrel fold proteins
bacteriophages represent simple viral model basic research many possibilities practical application due ability infect kill bacteria potential treatment bacterial infection examined since discovery advances molecular biology gene engineering phage application spectrum expanded various medical biotechnological fields construction bacteriophages extended host range longer viability mammalian bloodstream enhances potential alternative conventional antibiotic treatment insertion active depolymerase genes genomes enforce biofilm disposal also engineered transfer various compounds eukaryotic organisms bacterial culture applicable vaccine drug gene delivery phage recombinant lytic enzymes applied enzybiotics medicine well biotechnology pathogen detection programmed cell death bacterial expression strains besides modified bacteriophages high specificity applied bioprobes detection tools estimate presence pathogens food industry utilized control food borne pathogens part constructed phage based biosorbents
argonaute ago proteins play important roles rna silencing processes formation complexes mature micrornas study wheat ago gene referred taago shares high similarities atago arabidopsis osago rice characterized cdna full length taago encodes polypeptide molecular weight isoelectric point subcellular prediction analysis suggests taago target onto cytoplasm endoplasmic reticulum sorted similar atago osago taago contains piwi ddh two conserved domains agos phylogenetic analysis indicated taago possibly derived different progenitors homologous across diverse plant species transcripts taago significantly regulated stresses phosphorus deprivation dehydration exogenous treatment abscisic acid aba suggesting wheat ago member also exerts roles mediating signaling transductions southern blotting analysis revealed genome three diploids composing hexaploid wheat harbored two copies taago regulation taago wheat led conspicuously phenotypic alterations young plantlets variety abnormal growth features taking results study together implicated taago exists subset copies wheat plays critical roles silencing appropriate target genes via regulation taago mirnas complex formation
urban areas expanding worldwide yet little known anthropogenic landscape fragmentation affects connectedness gene flow urban wildlife european hedgehog erinaceus europaeus ground dwelling mammal also inhabits variable urban habitats investigated habitat connectivity spatial genetic structure urban hedgehogs largest swiss city addressed following questions city scale prominent landscape elements affect spatial distribution genetic clusters landscape elements affect gene flow urban mammal within clusters iii individual movement data improve prediction landscape wide gene flow used two bayesian methods examine influence water bodies major traffic routes genetic hedgehog clusters using microsatellite data hedgehogs used extensive movement data parameterise single path multi path connectivity models used predict genetic distance hedgehog individuals first found bayesian methods consistently showed three distinct genetic clusters separated main rivers parallel running transportation axes second best model indicates gene flow facilitated urban green areas hampered land cover types third multi path models based detailed gps movement data clearly outperformed models based priori assumptions predict gene flow multi path connectivity models based movement data reveal powerful tool detect gene flow highly fragmented habitats could crucial step implementing effective conservation measures elsevier rights reserved
first introduced egypt highly pathogenic avian influenza resulted death millions birds caused infections least deaths humans decade viral circulation outbreaks continue occur diffusion mechanisms poultry farms remain unclear using landscape genetics techniques identify distance models strongly correlated genetic relatedness viruses suggesting likely methods viral diffusion within egyptian poultry using viral genetic sequences obtained infected birds throughout northern egypt calculated genetic dissimilarity viruses eight gene segments spatial correlation evaluated using mantel tests correlograms multiple regression distance matrices within causal modeling relative support frameworks tests examine spatial patterns genetic relatedness compare different models distance four models evaluated euclidean distance road network distance road network distance via intervening markets least cost path model designed approximate wild waterbird travel using niche modeling circuit theory samples backyard farms strongly correlated least cost path distances samples commercial farms strongly correlated road network distances results largely consistent across gene segments results suggest wild birds play important role viral diffusion backyard farms commercial farms experience human mediated diffusion results inform avian influenza surveillance intervention strategies egypt elsevier rights
present work compare results obtained two approaches detect receptor expression cells surface confocal laser scanning microscopy established methodology study cell biology associated events wherein cells molecules labeling needed alternative label free electroanalytical technique essentially quantitative based electrochemical impedance spectroscopy eis concerning specificity assays equivalent since depend antibody efficiency recognize discriminate searched structure cell context regarding sensitivity showed case detection toll like receptor transfected human cells label free eis approach measurements performed paraformaldehyde environment retained morphology antigenic sites cells sensitive receptor detection demonstration proposed electrical impedance analytical assays help optimizing ability evaluate cellular biological events provides biologists medical community alternative either quantitive analytical tool applied biological model interest used design perform rapid multiplexable automatable assaying methodology elsevier rights reserved
study microrna mirna component low molecular weight rna lmw rna received increasing attention recent years critical prerequisite mirna studies acquisition high quality lmw rna lmw rna generally obtained total rna total nucleic acids solutions traditional methods lmw rna isolation involve many steps chemical reagents upon degradation may negatively affect results employed simple quick method involving trizol total rna extraction citrus tissues generation lmw rna using licl successfully utilized studies laboratory compared traditional methods method less expensive produced high rna yields avoiding use phenol toxic reagents addition entire procedure completed within hours many samples processed simultaneously therefore practical efficient method lmw rna extraction woody fruit crops containing high levels polysaccharide polyphenolics using extracted lmw rna mirnas successfully detected characterized reverse transcriptase polymerase chain reaction pcr northern blotting
extrafetal tissues noncontroversial inexhaustible source mesenchymal stem cells harvested noninvasively low cost veterinary field man stem cells derived extrafetal tissues express plasticity reduced immunogenicity high anti inflammatory potential making promising candidates treatment many diseases umbilical cord mesenchymal cells isolated characterized different species recently investigated potential candidates regenerative medicine study cells derived bovine wharton jelly isolated first time enzymatic methods frozen thawed cultivated least passages characterized wharton jelly derived cells readily attached plastic culture dishes displaying typical fibroblast like morphology although proliferative capacity decreased seventh passage cells showed mean doubling time hours mean frequency one colony forming unit fibroblast like every plated cells results molecular biology studies flow cytometry analyses revealed derived cells showed typical antigen profile mesenchymal stem cells positive oct myc negative remarkably derived cells showed differentiation ability culture induced media derived cells able differentiate osteogenic adipogenic chondrogenic neurogenic lines shown positive staining expression specific markers polymerase chain reaction analysis cells negative mhc positive mhc thus reinforcing role extrafetal tissue allogenic source bovine cell based therapies results provide evidence bovine derived cells may potential differentiate repair damaged tissues reinforce importance extrafetal tissues stem cell sources veterinary regenerative medicine detailed evaluation immunologic properties necessary better understand potential role cellular therapy elsevier inc rights reserved
little known role flavin containing monooxygenases fmos metabolism xenobiotics fmo isoform adult human liver highest impact drug metabolism aim presented study elucidate contribution human fmo oxygenation selected therapeutic drugs drugs abuse doas contribution vivo hepatic net clearance oxygenation products calculated application extended relative activity factor raf approach differentiate contribution cytochrome cyp isoforms fmo cyp substrates identified using pooled human liver microsomes heat inactivation chemical inhibition single enzyme incubations kinetic parameters subsequently determined using recombinant human enzymes mass spectrometric analysis via authentic reference standards simple peak areas products divided internal standard fmo identified enzyme mainly responsible formation diallyltryptamine oxide methamphetamine hydroxylamine contribution contribution calculated formation dimethyltryptamine oxide methoxypiperamide oxide respectively however fmo contributed less formation bromomethcathinone hydroxylamine amitriptyline oxide clozapine oxide significant difference contributions using calibrations reference metabolite standards peak area ratio calculations successful application modified raf approach including fmo proved importance fmo oxygenation doas human metabolism elsevier ireland ltd rights reserved
cis trans isomerization pro peptide bonds proteins instances acts molecular switch biological pathways prior work suggests cis isomer phospho thr pro motif located cytoplasmic domain amyloid beta protein precursor beta correlated increase amyloidogenic processing beta production amyloid beta beta neurotoxic peptide fragment alzheimer disease designed cis locked cyclic dipeptide composed cyclized phospho thr pro pcdp mimic putative pathological conformation three phosphate blocked derivatives pcdp dibzl pcdp bzl pcdp dipom two neuroglioma cell lines established cell models use testing compounds beta stable overexpression wild type beta bace stable overexpression beta site beta cleaving enzyme bace level secreted beta fragment resulting bace activity beta beta served key proxy amyloidogenic processing since cleavage beta bace requisite first step beta production compounds tested pcdp dibzl decreased beta beta levels cell lines pcdp dipom decreased beta beta levels bace cells similar dose dependences patterns proteolytic beta fragments enzymatic assays showed none pcdp derivatives directly inhibit bace catalytic activity results suggest model pcdp dibzl pcdp dipom act common point inhibit entry beta amyloidogenic beta processing pathway different targets provide important insights development novel therapeutics
canonical set amino acids leads exceptionally wide range protein functionality nevertheless set residues still imposes limitations potential protein applications incorporation noncanonical amino acids enlarge scope two complementary approaches incorporation noncanonical amino acids site specific incorporation addition endogenous canonical translational machineries orthogonal aminoacyl trna synthetase trna pair must provided interact canonical ones consequently codon assigned canonical amino acid usually stop codon also required genetic code expansion enables incorporation noncanonical amino acid single given site within protein presented work describes residue specific incorporation genetic code reassigned within endogenous translational system translation machinery accepts noncanonical amino acid surrogate incorporate canonically prescribed locations occurrences canonical amino acid protein replaced noncanonical one incorporation noncanonical amino acids change protein structure causing considerably modified physical chemical properties noncanonical amino acid analogs often act cell growth inhibitors expression hosts since modify endogenous proteins limiting vivo protein production vivo incorporation toxic noncanonical amino acids proteins remains particularly challenging cell free approach complete replacement arginine noncanonical amino acid canavanine presented circumvents inherent difficulties vivo expression additionally protocol prepare target proteins mass spectral analysis included shown lysine replaced hydroxy lysine albeit lower efficiency principle noncanonical amino acid analog incorporated using presented method long endogenous vitro translation system recognizes
approximately finishing swine operation united states experienced outbreak atypical neurologic disease weeks old pigs overall morbidity case fatality rate clinical onset progression signs affected pigs varied included inappetence compromised ambulation ataxia incoordination mental dullness paresis paralysis decreased response environmental stimuli tissues affected pigs submitted diagnostic investigation histopathologic examination cerebrum cerebellum spinal cord revealed severe lymphoplasmacytic necrotizing polioencephalomyelitis multifocal areas gliosis neuron satellitosis suggestive neurotropic viral infection bacterial pathogens isolated culture neurologic tissue affected pigs samples tested polymerase chain reaction pcr negative pseudorabies virus atypical porcine pestivirus immunohistochemistry porcine reproductive respiratory syndrome virus porcine circovirus listeria negative porcine sapelovirus psv identified spinal cord nested pcr used detect porcine enterovirus porcine teschovirus psv next generation sequencing brainstem spinal cord samples identified psv absence novel pathogens addition sapelovirus mrna detected neurons nerve roots spinal cord situ hybridization psv genetically novel overall amino acid identity nucleotide identity recently reported sapelovirus korea first case report united states associating sapelovirus severe polioencephalomyelitis pigs
specific sensitive substrate assay endo beta glucanase cellulase prepared substrate mixture comprises benzylidene end blocked chloro nitrophenyl beta cellotrioside bzcnpg presence thermostable beta glucosidase hydrolysis exo acting enzymes beta glucosidase exo beta glucanase prevented presence benzylidene group non reducing end glucosyl residue hydrolysis cellulase chloro nitrophenyl beta glycoside immediately hydrolysed chloro nitrophenol free glucose glucosidase substrate mixture reaction terminated colour developed addition weak alkaline solution assay procedure simple use specific accurate robust readily adapted automation procedure find widespread applications biomass enzymology specific assay endo beta glucanase general elsevier ltd rights reserved
introduction present treatment diabetic kidney disease dkd still mainly based drugs acting glycemic blood pressure control validated therapy able halt progression renal failure high incidence dkd due increase diabetes mellitus general population new therapeutic strategies needed areas covered analysed ongoing already completed clinical trials clinicaltrials gov pubmed dealing new therapies dkd expert opinion among drugs currently explored promising molecules interfere glucose dependent pathways particular polyol protein kinase hexosamine ages metabolic pathways impaired renal vascular regulation one recent goals achieved molecular biology development monoclonal antibodies able interfere extracellular matrix accumulation fibrosis interesting therapies investigation studies greater number patients establish better approach diabetic nephropathy
circulating tumor cells ctcs provide potentially accessible vivo sources metastatic cancer cells considerable focus placed analyzing genetics single ctcs prior analyses however ctcs must first detected within blood samples cancer patients current methods detection ctcs fluorescence microscopy require analysis hundreds images per blood sample making time consuming process creates bottleneck ctc analysis study therefore developed wide field fluorescence imaging system rapid ctc detection analyses ctcs first isolated using microcavity array mca micro sized filter ctc recovery separates cells based differences cell size deformability notably proposed imaging system enabled rapid similar visualization stained cells within mca field via one shot imaging furthermore morphology cells resulting images accurately reflected observed conventional microscopy total isolation detection ctcs using mca combined novel wide field fluorescence imaging system achieved within thus proposed system provide rapid ctc detection system elsevier rights reserved
oomycete phytophthora capsici plant pathogen responsible important losses vegetable production worldwide asexual reproduction plays important role rapid propagation spread disease field global proteomics study conducted compare two key asexual life stages capsici mycelium cysts identify stage specific biochemical processes total proteins identified using qualitative quantitative proteomics transcript abundance enriched proteins also analysed quantitative real time polymerase chain reaction seventy three proteins exhibited different levels abundance mycelium cysts proteins enriched mycelium mainly associated glycolysis tricarboxylic acid citric acid cycle pentose phosphate pathway providing energy required biosynthesis cellular building blocks hyphal growth contrast proteins predominant cysts essentially involved fatty acid degradation suggesting early infection stage pathogen relies primarily fatty acid degradation energy production data provide better understanding capsici biology suggest potential metabolic targets two different developmental stages disease control
background malabsorption fat protein contributes poor nutritional status people cystic fibrosis impaired pancreatic function may also result increased gastric acidity leading turn heartburn peptic ulcers impairment oral pancreatic enzyme replacement therapy administration gastric acid reducing agents used adjunct pancreatic enzyme therapy improve absorption fat gastro intestinal symptoms people cystic fibrosis important establish evidence regarding potential benefits drugs reduce gastric acidity people cystic fibrosis objectives assess effect drug therapies reducing gastric acidity nutritional status symptoms associated increased gastric acidity fat absorption lung function quality life survival determine adverse effects associated use search methods searched cochrane cystic fibrosis genetic disorders group trials register comprises references identified comprehensive electronic database searches handsearches relevant journals abstract books conference proceedings recent search group trials register march selection criteria randomised quasi randomised trials involving agents reduce gastric acidity compared placebo comparator treatment data collection analysis authors independently selected trials assessed trial quality extracted data main results searches identified trials participants suitable inclusion number trials assessing different agents small seven trials limited children four trials enrolled adults meta analysis performed trials cross design appropriate information conduct comprehensive meta analyses included trials generally reported adequately enough allow judgements risk bias however one trial found drug therapies reduce gastric acidity improved gastro intestinal symptoms abdominal pain seven trials reported significant improvement measures fat malabsorption two trials reported significant improvement nutritional status one trial reported measures respiratory function one trial reported adverse effect prostaglandin analogue misoprostol trials identified assessing effectiveness agents improving quality life complications increased gastric acidity survival authors conclusions trials shown limited evidence agents reduce gastric acidity associated improvement gastro intestinal symptoms fat absorption currently insufficient evidence indicate whether improvement nutritional status lung function quality life survival furthermore due unclear risks bias included trials unable make firm conclusions based evidence reported therein therefore recommend large multicentre randomised controlled clinical trials undertaken evaluate interventions
increasing evidence indicates association concentration systemic progesterone early luteal phase oestrous cycle embryo survival rate cattle examined relationship concentration systemic progesterone days post ovulation expression progesterone receptor pgr oestrogen receptor esr retinol binding protein rbp mrna bovine endometrium heifers blood sampled day ovulation day day post ovulation day animals divided low progesterone control high progesterone control groups based plasma progesterone concentrations half group supplemented exogenous progesterone resulting two groups low progesterone supplemented high progesterone supplemented endometrial tissues recovered groups day day gene expression analysed following northern blotting increasing progesterone concentrations associated decreased pgr esr expression duration dependent effects progesterone supplementation esr evident effect systemic progesterone concentrations day day expression rbp days progesterone responsive changes uterine gene expression likely affect embryo development
altered mental status cryptococcal meningitis results poorer survival underlying causes altered mentation poorly understood within two clinical trials assessed risk factors altered mental status gcs score considering baseline clinical characteristics csf cytokines chemokines antiretroviral therapy among enrolled participants gcs patients lower median csf cryptococcal antigen titers ccl higher opening pressures ccl compared persons gcs altered mental status may associated host immune response rather cryptococcus burden
antibodies toxin portion recombinant immunotoxins rit reduce efficacy pose potential safety risk overcome problem mutated immunogenic immunotoxin ssp produce lmb immunized rit eight human cell epitopes ssp modified removed determine effect cell epitope removal vivo mapped cell epitopes immune competent balb mice found mice recognize two epitopes one corresponds human immunodominant cell epitope human subdominant epitope eliminated lmb found mice immunized lmb cell activation develop anti drug antibodies ada whereas mice immunized ssp showed cell activation developed ada detected elisa drug neutralizing assays ability mice treated lmb respond antigens compromised conclude elimination cell epitopes sufficient prevent formation antibodies immunogenic foreign protein cellular molecular immunology published online october
article discuss categories work politics education human emancipation marx lukacs work category seek understand policy training human emancipation foundations necessary formation social starting ontological leap produced work category historically checks implementation conditions possibilities development fundamental complex formation social removal natural barriers lukacs wake marx demonstrates double transformation mediated work human metabolism nature occurs training materials social historical human becoming basis social praxis therefore emancipation also discuss antisocial character private property state therefore policy uncover origin social problems essence politics according marx one half activity historically dated instrumental something overcome conception politics state rejects understanding dimension human social permanently structurally
translationally controlled tumor protein tctp important component target rapamycin tor signaling pathway major regulator cell growth animals fungi despite relevance knowledge plant tctp homologs still limited present study full length botctp cdna isolated cabbage brassica oleracea cdna library botctp cdna encodes polypeptide amino acids shared highly conserved gtpase binding surface species analyzed northern blotting analysis showed botctp specifically expressed root stem furthermore expression botctp could obviously enhanced stress stimuli including high temperature salt stresses significant changes botctp expression observed aba stress functional analysis botctp performed silencing botctp using rna interference rnai botctp rnai plants exhibited reduced vegetative growth rate decreased tolerance cold high temperature salt stresses reported results clearly suggest botctp gene involved regulation growth stress response cabbage
palatogenesis requires precise spatiotemporal regulation gene expression controlled intricate network transcription factors corresponding dna motifs even minor perturbations network may cause cleft palate common congenital craniofacial defect humans micrornas mirnas class small regulatory non coding rnas elicited strong interest key regulators embryological development etiological factors disease mirnas function post transcriptional repressors gene expression therefore able fine tune gene regulatory networks several mirnas already identified involved congenital diseases recent evidence research zebrafish mice indicates mirnas key factors normal palatogenesis cleft palate formation provide overview recently identified molecular mechanisms underlying palatogenesis involving specific mirnas discuss dysregulation mirnas may result cleft palate
report discovery largest fern genome tmesipteris obliqua species belonging whisk fern family psilotaceae genome size estimated flow cytometry comparable largest genome far reported eukaryote monocot paris japonica melanthiaceae addition new record doubles range genome size values far encountered ferns fold fold finding emphasizes importance filling taxonomic gaps knowledge uncover full extent genome size diversity across different lineages land plants
lymphocytes respond variety stimuli activating intracellular signaling pathways turn leads rapid cellular proliferation migration differentiation cytokine production events tightly linked energy status cell therefore studying energy producing pathways may give clues overall functionality cells extracellular flux analyzer commonly used device evaluating performance glycolysis mitochondrial respiration many cell types system used study immune cells published reports yet comprehensive protocol optimized particularly lymphocytes lacking lymphocytes fragile cells survive poorly vivo conditions oftentimes lymphocyte subsets rare working low cell numbers inevitable thus experimental strategy addresses difficulties required provide protocol allows rapid isolation viable lymphocytes lymphoid tissues analysis metabolic states extracellular flux analyzer furthermore provide results experiments metabolic activities several lymphocyte subtypes different cell densities compared observations suggest protocol used achieve consistent well standardized results even low cell concentrations thus may broad applications future studies focusing characterization metabolic events immune cells
regulation eukaryotic transcription vivo occurs distinct stages previous research identified many active repressive transcription factors tfs core transcription components studied functions vitro vivo nonetheless individual tfs act concert regulate mrna gene expression single cell remains poorly understood direct observation assembly disassembly various biochemical reactions transcription single copy gene vivo ideal approach study problem research area requires developing novel techniques single cell transcription imaging integrating imaging studies understanding molecular biology transcription past decade advanced cell imaging enabled unprecedented capabilities visualize individual molecules track single transcription sites detect individual mrna fixed living cells studies raised several novel insights transcriptional regulation hit run model transcription bursting could obtained vitro biochemistry analysis point key question achieve deeper understandings discover novel mechanisms eukaryotic transcriptional regulation imaging transcription single cells meanwhile technical advancements likely required visualizing distinct kinetic steps transcription single copy gene vivo review article summarizes recent progress field describes challenges opportunities ahead elsevier ltd rights reserved
objective present study designed evaluate relationship mineral element levels health status children material methods total healthy children aged years boys girls five selected villages pingyin county participated study information including age gender height weight blood pressure recorded health professionals blood samples participants collected analyzed fourteen serum mineral elements determined atomic absorption spectrometer aas inductively coupled plasma mass spectrometry icp correlations serum element concentrations serum biochemical parameters investigated results significant gender difference found tested elements significant correlations age levels copper magnesium cadmium obtained correlation body mass index bmi serum zinc found noticeable inverse correlations systolic blood pressure sbp diastolic blood pressure dbp serum chromium nickel observed positive correlation sbp dbp addition dbp negatively correlated selenium positively correlated lead fasting blood glucose fbg significantly correlated serum concentration low density lipoprotein ldl significantly correlated level total cholesterol significantly correlated iron triglyceride level significantly correlated interrelations elements follows serum significantly correlated levels level significantly correlated arsenic level significantly correlated conclusions serum element concentrations may influence many biochemical parameters important measure trace element status children changes interactions may play important role human metabolism
objective interleukin pleiotropic cytokine either immunosuppressive immunostimulative activities reported cancer promoter region polymorphism alters expression serum levels cytokine present study addressed question whether single nucleotide polymorphisms snps positions gene promoter could predispose individual oral squamous cell carcinoma oscc design analyzed genotype gene histopathologically confirmed oscc patients similar number healthy volunteers taken controls indian population using polymerase chain reaction restriction fragment length polymorphism pcr rflp method allele genotype frequencies analyzed student test chi squared test strength associations odds ratio confidence intervals results genotype allele distribution gene polymorphism significantly different oscc cases controls genotype alleles found significantly different among oscc cases controls conclusions gene promoter region polymorphism significantly associated reduced risk oscc oscc group significantly greater frequency genotype compared control group elsevier ltd rights reserved
present study designed investigate relationship among epigenetic changes wnt antagonists histone hkmel expression tumor suppressor genes acute leukemia better understand pathogenesis leukemia quantitative reverse transcription polymerase chain reaction qrt pcr performed detect messenger rna mrna expression levels wnt antagonists wnta hdpr dkk dkk patients normal controls pyrophosphate sequencing performed detect methylation status wnta promoter western blotting performed detect overall expression levels wnta protein histone hkmel patients acute myeloid leukemia aml normal controls relationship wnta protein expression histone hkmel analyzed chromatin immunoprecipitation qpcr chip qpcr performed investigate recruitment hkmel set wnta promoter coding regions results demonstrated expression levels wnt antagonists generally low aml showed differential expression acute lymphocytic leukemia cases aml methylation wnta promoter observed wnta protein expression low cases aml overall level hkmel protein higher normal controls addition wnta expression positively correlated hkmel expression unrelated methylation status promoter moreover hkmel set enriched wnta promoter region coding region contrast wnta expression unrelated hkmel expression normal controls moreover observed methylation wnt antagonists often found patients particularly aml whereas extent methylation variable patients wnta expression positively correlated enrichment hkmel set wnta promoter coding regions hkmel increased wnta expression promoting transcription initiation elongation
isolation germ line competent mouse embryonic stem cells ability modify genome homologous recombination revolutionized life science research since initial discovery several approaches introduced increase efficiency homologous recombination including use isogenic dna generation targeting constructs use bacterial artificial chromosomes bacs bacs advantage combining long stretches homologous dna thereby increasing targeting efficiencies possibilities delivered bac recombineering approaches provide researcher almost unlimited possibilities efficiently edit genome controlled fashion despite advantages bac targeting approaches widespread use hampered mainly difficulties identifying bac targeted knockout alleles conventional methods like southern blotting recently introduced novel bac targeting strategy restriction fragment length polymorphisms rflps targeted polymorphic mouse cells enabling efficient easy pcr based readout identify properly targeted alleles provide detailed protocol generation targeting constructs targeting cells convenient pcr based analysis targeted clones enable user generate knockout cells almost every gene mouse genome within month period
body chip systems replicate size relationships organs blood distribution blood flow accordance human physiology operated tissues derived human cell sources systems capable simulating human metabolism including conversion prodrug effective metabolite well subsequent therapeutic actions toxic side effects system also permits measurement human tissue electrical mechanical reactions provide measure functional response since devices operated human tissue samples vitro tissues derived induced pluripotent stem cells ips play significant role determining success new pharmaceuticals without resorting use animals providing platform testing context human metabolism opposed animal models systems potential eliminate use animals preclinical trials article review progress made work achieved direct result lush science prize support animal free testing
process preparing endoscopic esophageal adenocarcinoma samples next generation dna rna sequencing poorly described therefore assessed feasibility pitfalls preparing esophageal adenocarcinoma endoscopic biopsies toward dna rna samples suitable next generation sequencing prospective study four tumor biopsy samples collected consecutive esophageal cancer patients esophagogastroduodenoscopy fresh frozen liquid nitrogen dna rna isolated samples tumor percentage least next generation sequencing double stranded dna dsdna required high quality rna preferred quantity dsdna rna quantity quality assessed nanodrop spectrophotometer thermo fisher scientific waltham usa agilent bioanalyzer agilent santa clara usa biopsy samples consecutive patients esophageal adenocarcinoma included five patients tumor percentage less four biopsies using protocol allowing simultaneous dna rna isolation median dsdna yield range median rna yield range median rna integrity number samples fresh frozen within minutes sampling range compared samples fresh frozen hours results study show obtaining dsdna rna next generation sequencing endoscopic esophageal adenocarcinoma samples feasible tumor percentage dsdna rna yield quality emphasize need sampling multiple biopsies minimizing delay fresh freezing
aim study detect region mycobacterium aoium subsp paratuberculosis map bovine milk samples using real time polymerase chain reaction qpcr conventional pcr study agreement tests total bovine milk samples collected herds considered positive map state pernambuco brazil map dna detected samples using conventional pcr samples using qpcr map dna detected animal farms studied moderate agreement found qpcr conventional pcr results sensitivity specificity conventional pcr relation qpcr respectively thus region map found bovine milk samples state pernambuco best knowledge first report map dna found bovine milk northeast brazil also demonstrated qpcr technique sensitive conventional pcr respect detection map milk samples published elsevier editora ltda
development colloid interface enzyme technologies enzyme containing reversed micellar system receiving much attention bioseparation bioconversion high efficiency brought new opportunities development molecular biotechnology reversed micelles represent nano sized aqueous droplets stabilized surfactant amphiphiles inside bulk organic solvents entrapped enzymes enhanced activities conditions suited lipid bilayers biological membranes fundamentals enzyme containing reversed micellar system described paper special emphasis effects surfactants varying concentrations structures latest study progress surfactants application enzyme containing reversed micelles reviewed introduction novel functional surfactants micellar enzymology future development also discussed
pathogenic isolates fusarium oxysporum applied non host plant species soil borne nonpathogenic isolates able protect plant pathogenic strains inducing wilts several modes action contribute biocontrol activity protective strains however genetic basis biocontrol mechanisms far understood aim study identify genes involved biocontrol activity oxysporum using original model made fom strain protective tomato mutant rev lost protective capacity rapid subtractive hybridization rash approach chosen identify genes regulated protective non protective interaction germinated conidia either fom rev confronted tomato cell cultures total regulated sequences generated protective non protective interaction respectively homology searches led identification plant fungal genes grouped according putative functions among plant genes involved plant response stresses abundant expression profiles genes homolog basic endochitinase ferredoxine nadp reductase fnr atp synthase rpm interacting protein rin confirmed northern blotting large proportion fungal sequences encoding genes unknown function among involved response oxidative stress gene putatively encoding enolase promising study potential role protective interaction oxysporum tomato elsevier ltd rights reserved
aim study characterize ways spreading common bacterial species isolated workers well air raw materials workplaces power plant utilizing biomass sources monitor microbial transmission identify source contamination working environment combination molecular biochemical methods applied study carried workplaces power plant utilizes biomass main fuel source studied workplaces bioaerosol particles collected sterile teflon filters using personal conical inhalable samplers cis biomass samples straw pellets briquettes corn briquettes sunflower pellets wood chips directly taken storage places simultaneously swab samples hands ten workers used respiratory masks ffp class also collected work shift evaluate individual workers microbial contamination collected samples total bacterial concentrations assessed common microbial isolates identified species level using biochemical api tests molecular polymerase chain reaction pcr followed random amplification polymorphic dna rapd typing methods mean concentrations culturable bacteria air biomass samples studied workplaces high cfu cfu respectively number bacteria swab mask samples also reached high level cfu cfu respectively among frequently isolated microorganisms types samples gram positive bacteria genus bacillus staphylococcus xylosus bacterial strains belonging genus bacillus licheniformis pumilus subtilis staphylococcus genotyped rapd pcr method based rapd pcr analyses genomic similarity among bacillus strains isolated biomass air protective mask hand samples well xylosus strains isolated air mask hand samples exceeded study demonstrated biomass primary source bacteria power plant workplaces results also revealed biomass associated bacteria easily transferred workers hands mask routine activities improve health protection workplaces adequate training courses hand hygiene use remove respiratory masks correctly workers introduced key element prevention strategy occupational point view pcr based methods seem efficient tool fast precise typing bacterial strains isolated different sources occupational environment methods may help implement appropriate prophylactic procedures minimize transmission infectious agents workplaces
polymerase chain reaction pcr considered excellent technique widely used molecular biology research various clinical applications however presence byproducts low output limitations generally associated technique recently use nanoparticles nps shown effective enhancing pcr although mechanisms underlying process suggested mainly based pcr results certain situations without abundant systematic experimental strategy order overcome challenges synthesized series polyethylene glycol peg modified polyethylenimine pei entrapped gold nanoparticles peg penps different gold contents role synthesized nps improving pcr technique systematically evaluated using error prone two round pcr rich pcr content results suggest possible mechanism pcr enhancement error prone two round pcr system improvement specificity efficiency technique using peg penps mainly depends surface charge mediated electrostatic interactions rich pcr system thermal conduction may dominant factor important findings offer breakthrough understanding mechanisms involved improving pcr amplification well application nanomaterials different fields particularly biology medicine
highly pathogenic avian influenza hpai viruses continue circulate nature threaten public health although several viral determinants host factors influence virulence hpai viruses mammals identified detailed molecular mechanism remains poorly defined requires clarification previous studies characterized two naturally isolated hpai viruses similar viral genomes differed substantially lethality mice study explored molecular determinants potential mechanism difference virulence using reverse genetics found single amino acid position hemagglutinin protein substantially affected systemic replication pathogenicity influenza viruses mice found mutation introduced linked glycosylation positions protein linked glycosylation enhanced viral productivity infected mammalian cells induced stronger host immune inflammatory responses viral infection findings understanding determinants pathogenicity viruses mammals importance highly pathogenic avian influenza hpai viruses continue evolve nature threaten human health key mutations virus hemagglutinin protein reassortment pandemic viruses endow hpai viruses potential aerosol transmissibility mammals thorough understanding pathogenic mechanisms viruses help develop effective control strategies however mechanisms virulent determinants influenza viruses fully elucidated study identified glycosylation positions protein two naturally occurring viruses important virulence determinant glycosylation event enhanced viral productivity exacerbated host response thereby contributed high pathogenicity virus mice
introduction recently shown tissue hypoxia stimulates progression periapical lesions regulating glycolysis dependent apoptosis osteoblasts facets hypoxia induced metabolic reprogramming disease pathogenesis require investigation study examined connection hypoxia augmented glutamine catabolism osteoblasts development periapical lesions methods primary human osteoblasts cultured hypoxia expression glutaminase gls examined using western blot analysis production glutamate measured colorimetric assay knockdown gls performed small interfering rna technology motif chemokine ligand ccl secretion chemotaxis macrophages examined enzyme linked immunosorbent assay transwell migration assay respectively rat model induced periapical lesions relations disease progression osteoblastic expression gls macrophage recruitment studied results hypoxia enhanced gls expression subsequent glutamate production osteoblasts glutamate induced chemoattraction macrophages osteoblasts regulation ccl synthesis hypoxia promoted ccl secretion macrophage recruitment augmentation glutaminolysis knockdown gls abolished hypoxia induced effects rat periapical lesions progressive bone resorption significantly related elevated gls expression osteoblasts increased macrophage recruitment conclusions addition rise glycolytic activity progression periapical lesions also associated enhanced glutamine catabolism osteoblasts gls may potential therapeutic target management periapical lesions
latest results anthropological studies bone remains earliest upper paleolithic burial discovered russian territory markina gora site kostenki described multivariate statistical methods parallel studies buried skull structure dentition established morphological characteristics undoubtedly belonged caucasian complex combination paleogenetic data findings contradict earlier hypothesis southern origin kostenki individual similarity population australo melanesian region
conditional gaussian graphical models reparametrization multivariate linear regression model explicitly exhibits partial covariances predictors responses partial covariances responses models particularly suitable interpretability since partial covariances describe direct relationships variables framework propose regularization scheme enhance learning strategy model driving selection relevant input features prior structural information comes efficient alternating optimization procedure guaranteed converge global minimum top showing competitive performance artificial real datasets method demonstrates capabilities fine interpretation illustrated three high dimensional datasets spectroscopy genetics genomics
objective study identify quantify mathematical models main factors production growing finishing pig units linked three brazilian cooperatives located western region parana state influence parameters daily feed intake feed conversion ratio records growing finishing farms representing batches totaling approximately pigs evaluated thirty production factors related management health installations equipment nutrition genetics environment considered number pigs per pen feeder model origin sex animals initial final body weights factors included final models dependent variables daily feed intake feed conversion ratio significant impact ratios approximately total variance found daily feed intake feed conversion ratio respectively explained variables included final models mathematical models could serve important tools aid decision making pig production systems
identification mutations present low frequencies clinical samples essential component precision medicine development molecular barcoding next generation sequencing greatly enhanced sensitivity detecting mutations massively parallel sequencing however improvements specificity would useful variety applications herein describe technology biseqs increase specificity sequencing least two orders magnitude achieved molecular barcoding applied massively parallel sequencing instrument biseqs employs bisulfite treatment distinguish two strands molecularly barcoded dna specificity arises requirement mutation identified strands library preparation required technology permits efficient use template dna well sequence reads nearly confined amplicons interest efficiency critical clinical samples plasma tiny amounts dna often available show biseqs applied evaluate transversions well small insertions deletions reliably detect one mutation among wild type molecules
background combined supplement vitamins reported increase milk milk component yields dairy cows without effect feed intake present study undertaken verify whether supplementation positively modifies pathways involved milk milk component synthesis thus studying transcriptome activity tissues effect supplements vitamins metabolism liver mammary gland investigated study multiparous holstein dairy cows assigned blocks animals according previous day milk production within block cows randomly assigned weekly intramuscular injections either saline nacl vitamin vitamin combination vitamins experimental period began weeks expected calving date lasted weeks lactation liver mammary biopsies performed lactating dairy cows days calving samples tissues analyzed microarray qpcr identify genes differentially expressed hepatic mammary tissues results microarray analysis identified genes hepatic tissue genes mammary gland whose expression modified vitamin supplements gene ontology categorizes genes non overlapping domains molecular biology panther one online resources used gene function classification classifies genes according molecular function biological process protein class biological processes modulated vitamin supplements associated developmental process protein metabolic process transport response inflammation liver genes modulated vitamin treatments involved protein metabolic process developmental process appeared affected treatments mammary gland genes analysed qpcr validated conclusion results indicate several metabolic processes modulated supplementation vitamins early lactating dairy cows addition results suggest vitamin supplements promoted liver regeneration reduced catabolism lipids early lactation
background adenoid hypertrophy one main causes upper airway obstruction obstructive sleep apnoea osa children studies shown administration mometasone furoate aqueous nasal spray significantly improved oxygen saturation children sleep disordered breathing aim study evaluate effect mometasone furoate aqueous nasal spray oxygen saturation measured nocturnal pulse oximetry quality life children sleep disordered breathing due adenoid hypertrophy materials methods eighty children suspected sleep disordered breathing due adenoid hypertrophy whose parents willing surgery adenoidectomy enrolled non controlled clinical trial quality life questionnaire distributed pre post interventional symptoms scored depending frequency occurrence pre post intervention ray nasopharynx taken pre post intervention nocturnal oxygen saturation monitoring done oxygen desaturation index odi well desaturation events recorded data analysed using paired student test wilcoxon signed rank tests results study population males females age distribution population ranged years mean age years study showed strong positive correlation grade adenoid size odi pulse oximetric parameters improved significantly drug administration significant improvement quality life children treatment conclusion study revealed mometasone furoate aqueous nasal spray therapy leads significant reduction adenoid size gives symptomatic relief children sleep disordered breathing recommended prime medical treatment modality children sleep disordered breathing substantially reduced morbidity health care utilisation children
random processes biology particular random genetic drift often make difficult predict fate particular mutation population using principles theoretical population genetics present form biological control ensures focal allele frequency given locus achieves prescribed probability distribution given time control form additional evolutionary force acts population provide mathematical framework determines additional force analysis indicates generally additional force depends frequency focal allele may also depend time argue translating additional force externally controlled process possibility implemented number different ways corresponding selection migration mutation combination may provide flexible instrument targeted change traits interest natural populations framework may applied used informed form guidance variety different biological scenarios including yield pesticide optimisation crop production biofermentation local regulation human associated natural populations parasitic animals bacterial communities hospitals
motor stereotypies common repetitive rhythmic movements typical onset early childhood often described children autism spectrum disorder asd intellectual disability stereotypies also present without developmental delay persist adulthood stereotypies often disruptive harmful physically socially effective evidence based treatments lacking attributed part incomplete knowledge underlying biological environmental risk several studies implicate various neurotransmitters brain circuits anatomical loci pre post natal environmental influences stereotypy onset symptom severity however points convergence among relatively small number studies indicating research needed confirm underlying bases risk particular note lack published genetic studies stereotypies despite evidence mendelian inheritance patterns families focusing future studies typically developing children primary motor stereotypies may useful approach minimize potential biological environmental genetic heterogeneity could theoretically hinder consistent findings ultimately deeper understanding underlying biology risk factors motor stereotypies lead closer effective targeted therapies alleviate suffering affected children
modern microsurgical techniques made possible broad spectrum novel means reconstruction complex bone soft tissue defects techniques combination developments transplant immunology led successful hand facial allotransplantation achievement highest rung reconstructive ladder truly replacing like like utilization contemporary microsurgical technique context vascularized composite allotransplantation vca permits successful technical execution feasibility vca facilitates study immunologic tolerance vca preclinical models optimizes functional vca outcomes
skeletal muscles composed myofibers biggest cells mammalian body one syncytia complex evolutionarily conserved structures compose assembled remains investigation size physiological features often constrain manipulation imaging applications culture immortalized cell lines widely used replicate early steps differentiation describe protocol enables easy genetic manipulation myofibers originating primary mouse myoblasts one week differentiation myofibers display contractility aligned sarcomeres triads well peripheral nuclei entire differentiation process followed live imaging immunofluorescence system combines advantages existing vivo vitro protocols possibility easy efficient transfection well ease access differentiation stages broadens potential applications myofibers subsequently used address relevant developmental cell biology questions also reproduce muscle disease phenotypes clinical applications
purpose reviewthe aim study highlight recent uses serum metabolomics human animal studies main themes importance understanding underlying variation human metabolism use serum metabolomics disease profiling recent findingsseveral studies attempted use serum metabolomics develop noninvasive biomarkers disease track consequences nutritional genetic interventions many advances made common changes identified ageing menopause cancer several problems interpretation emerged studies include small sample sizes human studies differences human rodent metabolomes however metabolic screen healthy humans humsermet project highlighted many variables may used refine interpretation design previous future human studies alike addition data mining summarysome common serum metabolome alterations identified many inconsistencies remain construction human serum metabolome database informative design future human animal model studies
aim investigate role delta isoform nuclear factor kappa kappa inhibitor pyrrolidine dithiocarbamate pdtc mediated growth inhibition mkn gastric cancer cells methods growth rate mkn cells treatment different concentrations pdtc ptdc combination cisplatin detected cck assay mrna expression levels delta beta kappa subunit protein levels detected reverse transcription polymerase chain reaction pcr immunofluorescence respectively growth mkn cells significantly inhibited pdtc alone dose dependent manner moreover inhibitory effect cisplatin remarkably enhanced dose dependent manner treatment pdtc results pcr analysis revealed mrna expression curbed significantly dose dependent manner treatment pdtc suppressive effect enhanced treated cisplatin respect isoforms mrna level delta significantly reduced dose dependent manner treatment pdtc ptdc combination cisplatin similar tendency change protein expression observed corresponding mrna detected immunofluorescence analysis conclusion delta isoform beta required pdtc induced inhibition mkn gastric cancer cells indicating disturbance cross talk kappa pathways promising target pharmaceutical research development treatment strategies gastric cancer
background fumarylacetoacetate hydrolase fah catalyzes final step tyrosine phenylalanine catabolism hydrolytic cleavage carbon carbon bond fumarylacetoacetate yield fumarate acetoacetate fah known sequence homologs functions unknown mechanism carbon carbon hydrolysis reactions essential human metabolism aromatic amino acids fah deficiency causes fatal metabolic disease hereditary tyrosinemia type carbon carbon bond hydrolysis also important microbial metabolism aromatic compounds part global carbon cycle results fah crystal structure determined rapid automated analysis multiwavelength anomalous diffraction data fah polypeptide folds residue terminal domain residue terminal domain terminal domain defines unusual beta strand topology novel mixed beta sandwich roll structure structure fah complexed physiological products also determined structure reveals fumarate binding near entrance active site acetoacetate binding octahedrally coordinated calcium ion located close proximity glu dyad conclusions fah represents first structure hydrolase acts specifically carbon carbon bonds fah also defines new class metalloenzymes characterized unique alpha beta fold mechanism involving glu water catalytic triad suggested based structural observations sequence conservation mutational analysis histidine imidazole group proposed function general base proposed function binding substrate activating nucleophile stabilizing carbanion leaving group oxyanion hole formed sidechains proposed stabilize tetrahedral alkoxide transition state proton transferred carbanion leaving group proposed originate lysine sidechain results also reveal molecular basis mutations causing hereditary tyrosinemia type
phosphoribosyl diphosphate prpp important intermediate cellular metabolism prpp synthesized prpp synthase follows ribose phosphate atp prpp amp prpp ubiquitously found living organisms used substitution reactions formation glycosidic bonds prpp utilized biosynthesis purine pyrimidine nucleotides amino acids histidine tryptophan cofactors nad tetrahydromethanopterin arabinosyl monophosphodecaprenol certain aminoglycoside antibiotics participation prpp metabolic pathways reviewed central metabolism prpp prpp synthase studied kingdoms life classical mechanistic procedures results analyses unified recent progress molecular enzymology elucidation three dimensional structures prpp synthases eubacteria archaea humans structures mechanisms catalysis five diphosphoryltransferases compared selected enzymes diphosphoryl transfer phosphoryl transfer nucleotidyl transfer reactions prpp used substrate large number phosphoribosyltransferases protein structures reaction mechanisms phosphoribosyltransferases vary demonstrate versatility prpp intermediate cellular physiology prpp synthases appear originated phosphoribosyltransferase evolution demonstrated phylogenetic analysis prpp furthermore effector molecule purine pyrimidine nucleotide biosynthesis either binding purr pyrr regulatory proteins allosteric activator carbamoylphosphate synthetase genetic analyses disclosed number mutants altered prpp synthase specifying genes humans well bacterial species
purpose primary objective study determine rate extent transdermal absorption systemic delivery diclofenac pennsaid dimethaid research inc topical lotion systemic circulation lotion applied human volunteers open treatment non blinded non vehicle controlled study addition vivo metabolism topical diclofenac lotion also studied methods human volunteers dosed topical diclofenac sodium lotion knee sequential time blood urine samples taken determine pharmacokinetics bioavailability metabolism results topical absorption applied dose peak plasma occurred dosing peak urinary excretion urinary excretion pattern exhibits elimination towards beyond opposed early urinary excretion suggests continuous delivery diclofenac sodium lotion skin ceased dosing site washed skin surface residue dose remainder assumed lost clothing bedding extraction metabolites urine amounted untreated urine suggesting substantial diclofenac metabolism water soluble metabolites probably conjugates could extracted method employed two dimensional tlc analysis untreated urine showed minimal diclofenac emphasizing extensive vivo metabolism drug treatment urine samples enzymes sulfatase beta glucuronidase showed substantial increase extractable material three spots consistently present sample run namely diclofenac hydroxy diclofenac intermediate polar metabolite probably hydroxylated metabolite therefore significant sulfation glucuronidation diclofenac numerous hydroxy metabolites diclofenac many metabolites conjugates remain unidentified conclusions continuous delivery diclofenac sodium lotion skin ceased dosing site washed majority material excreted urine conjugates hydroxylated metabolites parent chemical although identification required
sixteen novel derivatives tris salicylaldiminomethyl ethane synthesized purpose encapsulating ions generating new radiopharmaceuticals two methods preparation analog complexes presented one utilizes sncl reduction tco direct substitution route starting tccl free ligands characterized melting points nmr nmr mass spectroscopy tlc elemental analyses tcl complexes characterized fab vis ray structural analysis performed crystal methoxy hydroxyphenyl methylene amino methyl methyl propanediyl bis nitrilomethylidyne bis methoxyphenol tetraphenylborate represents isomorphous mixture determined sem metal coordination site coordinate composed donor atoms intermediate octahedral trigonal prismatic geometry tcl complexes prepared stannous environment equivalence complexes demonstrated hplc techniques snl complex prepared comparison purposes unusual ligand oxidation occurs one series ligands situ amine imine conversion observed complexation reaction reducing media guinea pig rat dog human metabolism studies reported selected tcl complexes myocardial uptake approaches injected dose
background action tremor hallmark feature essential tremor tremor typically mildly asymmetric patients markedly asymmetric data factors influence asymmetry also highly familial disease whether tremor asymmetry profile differential expression tremor arm given patient similar across family members known alternative possibility feature heritable published data addressing issue aim study determine whether extent action tremor asymmetry ran families methods probands relatives enrolled genetic study yale columbia universities person evaluation included videotaped neurological examination including detailed assessment tremors senior movement disorders neurologist reviewed videotaped examinations severity postural kinetic arm tremors rated examination items using reliable rating scale tremor asymmetry index right arm tremor score left arm tremor score used bivariate linear regression model assess predictors tremor asymmetry index relatives model used tremor asymmetry index proband primary predictor interest analysis variance anova tested heterogeneity across families tremor asymmetry index see whether significant family effect results enrollees probands affected relatives bivariate linear regression model tremor asymmetry index proband predictor tremor asymmetry index relatives anova family grouping explain significant proportion total variance tremor asymmetry index conclusion tremor asymmetry aggregate families therefore seem disease feature heritable data provide added value clinical dialog giving patients one piece information way disease manifests within families
acute graft versus host disease gvhd remains major complication allogeneic haematopoietic stem cell transplantation significant proportion patients failing respond first line systemic corticosteroids reliable biomarkers predicting disease severity response treatment warranted improve management thus sought determine whether pentraxin ptx acutephase protein produced locally site inflammation could represent novel acute gvhd biomarker using murine model disease found increased ptx plasma levels irradiation gvhd onset similarly plasma ptx enhanced pediatric patients day transplantation likely due conditioning gvhd onset patients experiencing clinical symptoms disease ptx also found increased skin colon biopsies patients active disease furthermore ptx plasma levels gvhd onset predictive disease outcome since resulted significantly higher severe therapyunresponsive patients multiple injections rhptx murine model gvhd influence disease course taken together results indicate ptx constitutes biomarker gvhd severity therapy response useful tailor treatment intensity according early risk stratification gvhd patients
nifu iike gene exhibiting similarity nifu nitrogen fixation gene cluster identified first time gut cdna library amphioxus branchiostoma belcheri pcr northern blotting well situ hybridization histochemistry verified cdna represents amphioxus nifu iike gene rather microbial contaminant nifu like gene encodes protein amino acid residues including highly conserved type motif shares identity nifu like proteins variety species including vertebrates invertebrates microbes expressed tissue specific manner digestive system including epipharyngeal groove endostyle hepatic caecum hind gut gill ovary testis taken together highly likely nifu like protein plays tissue dependent critical role amphioxus
objective study establish aging model murine hematopoietic stem cell hsc vitro investigate relative biological mechanism aimed build foundation searching methods delaying hsc aging sca hsc isolated purified murine bone marrow mono nucleated cell magnetic activated cell sorting purity separated cells analyzed flow cytometry fcm expression sca detected immunofluorescence sca hsc induced aging tert butylhydroperoxide bhp final concentration mol establish murine hsc aging model vitro biological characteristics aging hsc evaluated mixed hematopoietic progenitor cell culture vitro cell cycle assay senescence associated beta galactosidase beta gal cytochemical staining telomere length telomerase activity detected southern blotting telomere repeat amplification protocol polymerase chain reaction trap pcr augmentation expressions inka arf cip waf mrna detected reverse transcription pcr purity separated sca hsc survival sca hsc similar cocultured mol bhp ability aging sca hsc form mixed hematopoietic progenitor colony self renewal multi differentiation decreased significantly number aging sca hsc entered phase cell cycle percentage positive cells expressed beta gal increased significantly telomere length shortened telomerase activity decreased expression inka arf cip waf mrna increased bhp induce sca hsc senescence vitro signal transduction pathways inka retinoblastoma arf mdm cip waf may play key roles sca hsc senescence induced bhp
caspases key mediators apoptotic cell death via proteolytic activity caspases activated cells levels detectable available technologies apoptosis generally assumed occur shortly thereafter caspases cleave many functional structural components cause rapid complete cell destruction within minutes however accumulating evidence indicates normal healthy cells caspases functions presumably lower enzymatic levels studies non apoptotic caspase activity hampered difficulties detecting low levels caspase activity tracking ultimate cell fate vivo illustrate use ultrasensitive caspase reporter caspasetracker permanently labels cells experienced caspase activity whole animals vivo dual color caspasetracker biosensor drosophila melanogaster transiently expresses red fluorescent protein rfp indicate recent going caspase activity permanently expresses green fluorescent protein gfp cells experienced caspase activity time past yet die importantly caspase dependent vivo biosensor readily reveals presence non apoptotic caspase activity tissues organ systems throughout adult fly demonstrated using whole mount dissections individual flies detect biosensor activity healthy cells throughout brain gut malpighian tubules cardia ovary ducts tissues caspasetracker detects non apoptotic caspase activity long lived cells biosensor activity detected adult neurons tissues least days caspase activation biosensor serves important tool uncover roles molecular mechanisms non apoptotic caspase activity live animals
background navigation magnetotactic bacteria relies specific intracellular organelles magnetosomes membrane enclosed crystals magnetite aligned linear chain magnetosome chain acts cellular compass aligning cells geomagnetic field order search suitable environmental conditions chemically stratified water columns sediments cytokinesis magnetosome chains properly positioned cleaved separated order evenly passed daughter cells magnetospirillum gryphiswaldense assembly magnetosome chain controlled actin like mamk polymerizes cytoskeletal filaments connected magnetosomes acidic mamj protein mamk filaments speculated recruit magnetosome chain cellular division sites thus ensuring equal organelle inheritance however underlying mechanism magnetic organelle segregation remained largely unknown results performed vivo time lapse fluorescence imaging directly track intracellular movement dynamics magnetosome chains well photokinetic ultrastructural analyses actin like cytoskeletal mamk filament show magnetosome chains undergo rapid intracellular repositioning new poles towards midcell newborn daughter cells driving force magnetosomes movement likely provided pole midcell treadmilling growth mamk filaments discovered splitting equipartitioning magnetosome chains occurs unexpectedly high accuracy depends directly dynamics mamk filaments conclusion propose novel mechanism prokaryotic organelle segregation similar type bacterial partitioning system plasmids relies action cytomotive actin like filaments together specific connectors transport magnetosome cargo fashion reminiscent eukaryotic actin organelle transport segregation mechanisms
aimed explore correlations eukaryotic translation initiation factor subunit eifa polymorphisms susceptibility chemoradiotherapy efficacy cervical carcinoma august august patients cervical carcinoma enrolled case group healthy individuals selected control group elfa arglys genotypes detected hemi nested polymerase chain reaction restriction fragment length polymorphism patients received chemoradiotherapy evaluated efficacy compared carriers genotype carriers genotype elfa arglys polymorphism higher risk cervical carcinoma elfa arglys polymorphism associated tumor size differentiation degree federation gynecology obstetrics figo stage lymph node metastasis lnm overall response rate case group response rate genotype carriers higher compared patients genotypes binary logistic regression analysis showed tumor size figo stage lnm efa arglys polymorphism influencing factors chemoradiotherapy efficacy univariate analysis revealed age efa arglys polymorphism differentiation degree figo stage lnm prognostic factors cervical carcinoma multivariate analysis showed age years higher figo stage lnm well genotypes elfa arglys polymorphism risk factors related prognosis cervical carcinoma efa arglys polymorphism connected higher susceptibility cervical carcinoma may affect chemoradiotherapy efficacy prognosis cervical carcinoma copyright kaohsiung medical university published elsevier taiwan llc
efficacy artificial neural networks ann solve complex problems optimize evaluation processes early blight disease tomato plants reducing required time resources objective study verify efficiency ann predict area disease progress curve audpc reduce number assessments establish best time evaluate early blight disease tomato accessions severity disease evaluated one hundred thirty five tomato accessions germplasm vegetable bank federal university vicosa bgh ufv three experiments area disease progress curve audpc calculated data six evaluations disease severity several ann mlp types multi layer perceptron trained taking account audpc values desired output different numbers assessment combinations early blight disease severity used input ann efficient predicting audpc reduced number evaluations six two twelfth eighteenth days pathogen inoculation best evaluate severity early blight disease genotype environment affects efficiency predicting audpc anns efficient predicting area early blight disease progress curve audpc fewer evaluations optimized assessment disease tomato accessions elsevier rights reserved
background predicted gene originates positive strand human cytomegalovirus hcmv genome whereas genes originate complementary strand except gene transcription gene region investigated extensively methods northern blotting cdna library screening race pcr pcr used results least eight transcripts antisense orientation transcribed region late phase hcmv infection coterminus transcripts located within predicted gene longest transcript initiated upstream predicted gene transcripts derived predicted gene region except previously predicted open reading frame orf three novel orfs named ulanti ulanti ulanti located transcripts ulanti transcription unit transcription found conclusion family novel coterminal transcripts transcribed gene region
aim study compare data obtained using new liaison chemiluminescence system search hbsag antihcv anti hiv obtained using vitros system currently adopted microbiology unit hospital legnano routine samples patients referred practitioners determination hbsag samples anti hcv samples anti hiv samples simultaneously analyzed using systems concordant positive discordant samples examined confirmation means hbsag neutralization assay anti hcv immunoblot anti hiv western blot hbv dna hcv rna hiv rna also sought discordant samples samples patients known positive tested hbsag positive anti hcv positive hiv positive well throughout treatment viremia levels becoming undetectable treatment hbsag anti hcv anti hiv concordance two systems routine series respectively markers samples known positive various molecular biology confirmatory tests discordant samples negative except one anti hcv positive sample measure cohen kappa coefficient hbsag anti hcv anti hiv gave values respectively conclusion performance liaison system routine laboratory determination three markers comparable vitros system wiley periodicals inc
paper reports presence kunitz type protease inhibitor hgpi gene dolichos biflorus first time full length protease inhibitor gene complete open reading frame encoding amino acids cloned biflorus using pcr based method blastn search showed hgpi gene shared homology cicer arietinum trypsin inhibitor mrna cajanus cajan protease inhibitor deduced amino acid sequence exhibited homology kunitz type trypsin inhibitor chickpea pigeon pea soybean deduced amino acid sequence contained terminal signal sequence amino acids molecular weight kda phylogenetic tree also showed close relationship cicer arietinum cajanus cajan southern blotting revealed presence one copy hgpi gene biflorus genome homology modeling employed predict secondary structure structural models protease inhibitor gene found constitutively expressed different tissues determined semi quantitative pcr novel hgpi gene submitted genbank accession isolated novel hgpi gene broaden pool plant defense genes might ideal choice developing transgenic crops resistant insect pests well pathogens addition could used probe selection insect pathogen resistant genotypes
progress biomaterial science engineering increasing knowledge cell biology enabled develop functional biomaterials providing appropriate biochemical biophysical cues tissue regeneration applications tissue regeneration particularly important treat chronic wounds people diabetes understanding controlling cellular microenvironment wound tissue important improve wound healing process study review different biochemical growth factors peptides dna rna biophysical topographical guidance pressure electrical stimulation pulsed electromagnetic field cues providing functional instructive acellular matrix heal diabetic chronic wounds biochemical biophysical signals generally regulate cell matrix interactions cell behavior function inducing tissue regeneration chronic wounds technologies devices already developed used clinic employing biochemical biophysical cues wound healing applications technologies integrated smart biomaterials deliver therapeutic agents wound tissue precise controllable manner review provides useful guidance understanding molecular mechanisms signals healing diabetic chronic wounds designing instructive biomaterials treat
choroideraemia rare linked chorioretinal disease characterised progressive degeneration retina retinal pigment epithelium rpe choroid causes choroideraemia reported pathogenic variants chm gene encoding rab escort protein affected males although progressive loss visual fields commonly seen central vision usually maintained middle age hand female carriers generally good visual acuities frequently show fundus abnormalities moreover recent study revealed female carriers reduced microperimetric sensitivity macular hole formation rare complication inherited chorioretinal diseases occurrence choroideraemia patients reported rarely literature report presents details choroideraemic patient full thickness closed without undergo vitrectomy surgery
pilot study conducted human biomonitoring suspected carcinogen chloroprene purpose urine samples individuals occupationally exposed chloroprene exposed group individuals without occupational exposure alkylating substances control group analysed six potential mercapturic acids chloroprene chloro oxobutyl mercapturic acid chloro hydroxybutyl mercapturic acid chloro hydroxy butenyl mercapturic acid iii hydroxy oxobutyl mercapturic acid hobma dihydroxybutyl mercapturic acid dhbma hydroxy butenyl mercapturic acid mhbma direct comparison control group elevated levels mercapturic acids iii mhbma hobma dhbma found urine samples exposed group detected samples whereas hobma dhbma found analysed urine samples thus first time possible detect hobma iii human urine mercapturic acid iii could confirmed specific metabolite chloroprene humans providing evidence intermediate formation reactive epoxide biotransformation main metabolite however found dhbma showing distinct significant correlation urinary iii levels exposed group obtained results give new scientific insight course biotransformation chloroprene humans
testing presence specific cell surface receptors egfr tumor cells integral part cancer care terms treatment decisions prognosis understanding strengths limitations tests important inaccurate results may occur procedures designed prevent false negative false positive outcomes employed review discusses tests commonly used identify characterize cell surface receptors erythropoietin receptor epor first summary provided biology epo epor system describing epor expressed erythrocytic progenitors precursors bone marrow mediates red blood cell production response epo second studies described investigated whether erythropoiesis stimulating agents could stimulate tumor progression cancer patients whether epor expressed functional tumor cells endothelial cells methods used studies included immunohistochemistry northern blotting western blotting binding assays review summarizes strengths limitations methods critically analyzing data tests cell surface receptors epor requires understanding techniques utilized demonstrating results consistent current knowledge receptor biology
precursor major yolk protein vitellin vitellogenin studied crustacean decades mainly shrimp however little known molecule crabs present study report cdna encoding marine crab portunus trituberculatus important commercial species aquaculture cdna sequence length containing open reading frame encodes amino acid residues deduced amino acid sequence showed identity known crustacean vgs seven potential cleavage sites rxxr identified deduced precursor sds page westem blotting analysis demonstrated vns ovary mature crab consisted three major polypeptides kda northern blotting analysis revealed mainly expressed hepatopancreas vitellogensis females transcript also identified ovary crab reverse transcription polymerase chain reaction analysis elsevier inc fights reserved
adenosylcobalamin coenzyme serves cofactor group enzymes catalyze unusual rearrangement elimination reactions role cofactor initiator reactive free radicals needed reactions well established less clear enzymes activate coenzyme towards homolysis control radicals generated availability high resolution ray structures combined detailed kinetic spectroscopic analyses allowed several adenosylcobalamin enzymes computationally modeled detail computer simulations generally obtained good agreement experimental data provided valuable insight mechanisms unusual reactions importantly atomistic modeling enzymes allowed role specific interactions protein substrate coenzyme explored leading mechanistic predictions tested experimentally article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
introductionwomen polycystic ovary syndrome three fold higher risk endometrial cancer insulin resistance hyperlipidemia may pertinent factors pathogenesis conditions aim study investigate endometrial sterol regulatory element binding protein gene expression polycystic ovary syndrome endometrial cancer endometrium correlate endometrial sterol regulatory element binding protein gene expression serum lipid profiles material methodsa cross sectional study performed nottingham university hospital total women polycystic ovary syndrome endometrial cancer controls participants group recruited clinical biochemical assessments performed endometrial biopsies obtained participants taqman real time polymerase chain reaction endometrial sterol regulatory element binding protein gene systemic protein expression analyzed resultsthe body mass indices women polycystic ovary syndrome controls significantly different women endometrial cancer higher mean body mass index sterol regulatory element binding protein gene expression significantly increased polycystic ovary syndrome endometrial cancer endometrium compared controls sterol regulatory element binding protein gene expression positively correlated body mass index waist hip ratio polycystic ovary syndrome statistically significant similarly statistically insignificant positive correlations found endometrial sterol regulatory element binding protein gene expression body mass index endometrial cancer waist hip ratio sterol regulatory element binding protein gene expression significantly positively correlated triglyceride polycystic ovary syndrome endometrial cancer respectively quantitative serum sterol regulatory element binding protein gene correlated endometrial gene expression conclusionssterol regulatory element binding protein gene expression significantly increased endometrium women polycystic ovary syndrome women endometrial cancer compared controls positively correlates serum triglyceride polycystic ovary syndrome endometrial cancer
vasculitis remarkable presentation extrahepatic manifestations hcv according presence absence cryoglobulins subdivided two main types cryoglobulinemic vasculitis non cryoglobulinemic vasculitis based attribution vasculitis serum cryoglobulins pathogenic factor attribution cryoglobulinemia hcv represents success story history immunology microbiology clinical medicine hcv bind invade lymphocytes consequently triggering immune response different mechanisms epidemiology disease well described clinical picture describes cutaneous pulmonary musculoskeletal neurological renal endocrine gastrointestinal hepatic cardiovascular manifestations may also associated sicca symptoms increased risk lymphoma serious catastrophic events pathology well characterized classification criteria syndrome validated discussed management decided according presence severity clinical presentation divided asymptomatic mild moderate severe life threatening disease recently introduced direct antiviral agents proving safe effective management cryoglobulinemic vasculitis advocated two types vasculitis given prioritization egyptian mass campaign eradicate hcv production hosting elsevier behalf cairo university
outcome infection mycobacterium tuberculosis mtb largely influenced host pathogen interaction human host mtb genetic backgrounds play important role whether interaction also influences selection expansion drug resistant mtb strains primary focus review first outline main recent findings regarding mtb determinants implicated development drug resistance second examine data regarding human genetic factors may play role drug resistance highlight interesting openings research therapy elsevier international society chemotherapy rights reserved
nicotinamide adenine dinucleotide nad essential coenzyme various physiological processes including energy metabolism dna repair cell growth cell death many pathways typically dysregulated cancer cells making nad intriguing target cancer therapeutics nad mainly synthesized nad salvage pathway cancer cells surprisingly pharmacological targeting nad salvage pathway causes cancer cell cytotoxicity vitro vivo several studies described precise consequences nad depletion cancer biology demonstrated nad depletion results depletion energy levels lowered rates glycolysis reduced citric acid cycle activity decreased oxidative phosphorylation additionally depletion nad causes sensitization cancer cells oxidative damage disruption anti oxidant defense system decreased cell proliferation initiation cell death manipulation cell signaling pathways sirt recently studies explored effect well known cancer therapeutics combination pharmacological depletion nad levels found many cases synergistic effect cancer cell cytotoxicity context discuss effects nad salvage pathway inhibition cancer cell biology provide insight pathway novel anti cancer therapeutic target elsevier ltd rights reserved
generation axon collateral branches fundamental aspect development nervous system response axons injury although much discovered signaling pathways cytoskeletal dynamics underlying branching additional aspects cell biology axon branching received less attention review summarizes recent advances understanding key factors involved axon branching article focuses cytoskeletal mechanisms intracellular organelles mitochondria endoplasmic reticulum membrane remodeling exocytosis endocytosis contribute branch initiation formation together growing literature provides valuable insight well platform continued investigation multiple aspects axonal cell biology spatially temporally orchestrated give rise axon branches wiley periodicals inc
scale scope global epidemic coupled challenges traditional vaccine development approaches point toward need novel methodologies hiv vaccine research development vaccines able induce broadly neutralizing antibodies remains ultimate goal date vaccines continue fail induce rare humoral immune responses conversely growing evidence across vaccine platforms non human primates humans points role polyclonal vaccine induced antibody responses protection infection candidate vaccines despite employing disparate viral vectors immunization strategies consistently identify role functional non traditional antibody activities correlates immunity however precise mechanism action binding antibodies specific characteristics ability selectively induced potentiated result complete protection merits parallel investigation neutralizing antibody based vaccine design approaches ultimately neutralizing functional antibody based vaccine strategies need mutually exclusive defining specific characteristics protective functional antibodies may provide target immune profile potentially induce robust immunity hiv specifically one approach guide development functional antibody based vaccine strategies termed systems serology offers unbiased comprehensive approach systematically survey humoral immune responses capturing array functions humoral response characteristics may induced following vaccination high resolution coupled machine learning tools large datasets explore antibody ome offer means step back anticipated correlates mechanisms protection toward fundamental understanding coordinated aspects humoral immune responses globally differentiate among vaccine candidates critically identify features humoral immunity distinguish protective non protective responses overall systematic serological approach described aimed broadly capturing enormous biodiversity antibody profiles may emerge following vaccination complements existing cutting edge tools cellular immunology space survey vaccine induced polyfunctional cellular activity flow cytometry transcriptional profiling epigenetic metabolomic analysis offer means develop nuanced complete understanding correlates protection support design functional vaccine strategies
nanoscale electronic devices like field effect transistors long promised provide sensitive label free detection biomolecules particular single walled carbon nanotubes requisite sensitivity detect single molecule events sufficient bandwidth directly monitor single molecule dynamics real time recent measurements demonstrated premise monitoring dynamic single molecule processivity three different enzymes lysozyme protein kinase klenow fragment dna polymerase case recordings resolved detailed trajectories tens thousands individual chemical events provided excellent statistics single molecule events electronic technique temporal resolution approaching microsecond provides new window observing brief intermediate transition states addition devices indefinitely stable molecule observed minutes hours extended recordings provide new insights rare events like transitions chemically inactive conformations
investigated effects embryonic temperature treatments degrees life time recruitment fast myotomal muscle fibres zebrafish danio rerio reared degrees hatching fast muscle fibres produced total length degrees degrees degrees final fibre number ffn showed optimum degrees higher degrees treatments respectively growth maximum similar involved fibre hypertrophy microarray experiments used determine global changes microrna mirna mrna expression associated transition hyperplasic myotube producing phenotype hypertrophic growth phenotype fish reared degrees whole life cycle expression mirnas mrnas obtained microarray experiments validated northern blotting real time qpcr independent samples fish phenotype fourteen regulated regulated mirnas identified phenotype together regulated regulated mrnas fold two abundant categories regulated genes phenotype encoded contractile proteins sarcomeric structural cytoskeletal proteins contrast highly represented regulated transcripts phenotype energy metabolism immune related genes latter mostly involved cell cell interactions cytokine pathways included beta microglobulin precursor orthologue complement component invariant chain like protein iclp antigen like cdl tyrosine kinase non receptor tnk five myosin heavy chain genes regulated phenotype formed part tandem repeat chromosome shown situ hybridisation specifically expressed nascent myofibres seven regulated mirnas phenotype showed reciprocal expression seven mrna targets identified mirbase targets version http microrna sanger targets including asporin aspn target four mirnas eleven regulated mirnas phenotype predicted targets seven regulated genes including dre mir five predicted mrna targets results provide evidence mirnas play role regulating transition phenotype identify genes regulatory interactions involved
overexpression rabl associated malignancies however relationship hepatocellular carcinoma remains unclear study expression rabl hepatocellular carcinoma cell lines four pairs matched hepatocellular carcinoma tissues adjacent normal hepatic tissues detected quantitative reverse transcription polymerase chain reaction western blot addition protein expression rabl examined cases hepatocellular carcinoma immunohistochemistry rabl hepatocellular carcinoma cell lines elevated messenger rna protein levels rabl protein significantly upregulated upto fold hepatocellular carcinoma compared paired normal hepatic tissues immunohistochemical analysis revealed overexpressions rabl hepatocellular carcinoma rabl expressed significantly higher rates hepatocellular carcinoma compared adjacent normal hepatic tissue statistical analysis suggested upregulation rabl significantly associated lymph node metastasis tumor thrombus portal vein advanced clinical stage furthermore found overexpression rabl hepatocellular carcinoma cells could significantly enhance cell proliferation growth ability conversely silencing rabl small hairpin rna interference caused inhibition cell proliferation growth studies suggest rabl valuable marker hepatocellular carcinoma progression overexpression rabl plays important role development pathogenesis hepatocellular carcinoma
investigated role smad signaling molecule tgf beta pathway cells pathology sjogren syndrome nonobese diabetic nod mice animal model cell specific smad deleted smad cre smad tko nod mice accelerated development compared wildtype smad cre nod mice including increased lymphocyte infiltration exocrine glands decreased tear saliva production increased levels autoantibodies weeks age activated memory cells cytokine ifn producing cells increased smad tko nod mice however proportion function regulatory treg cells different smad tko nod mice effector teff cells smad tko nod mice less sensitive teff cells suppression treg cells differentiation capability teff cells similar smad tko nod mice expression increased inducible treg skewing conditions cells smad tko nod mice results demonstrate disruption smad pathway cells nod mice increases teff cell activation resulting upregulation cells indicating smad cells protective role development nod mice
autoimmune diseases arise due loss immunological self tolerance regulatory cells tregs important mediators immunologic self tolerance tregs represent mature cell subpopulation mice humans tregs circulating peripheral blood induced pluripotent stem cells ipscs differentiated functional tregs potential used cell based therapies autoimmune diseases present method develop antigen specific tregs ipscs ipsc tregs method based incorporating transcription factor foxp specific cell receptor tcr ipscs differentiating stromal cells expressing notch ligands delta like following vitro differentiation ipsc tregs express foxp specific tcr able respond stimulation method successfully applied cell based therapy autoimmune arthritis murine model adoptive transfer specific ipsc tregs induced arthritis aia bearing mice ability reduce joint inflammation swelling prevent bone loss
cell culture well established standard technique fundamental tool biology medicine establishment novel culture method meeting various challenges sometimes open new fields cell biology medicine artificial microenvironment cultured cells made complicated factors including cytokines scaffold material type cell cell interactions physical stress replicate tissue architecture cell cell interactions specific physical microenvironment previously demonstrated effectiveness three dimensional culture system established two simple culture systems air liquid interface ali fluid flow stress ffs three dimensional collagen gel culture system replicate cell cell interactions vitro skin constantly exposed air ali system closely mimicked skin microenvironment maintained homeostasis epidermis dermis ali culture system also revealed possibility skin regeneration ectopic mesenchymal cell involvement fluid streaming shear stress recently demonstrated constitute critical microenvironment various cell types ffs system demonstrated fluid streaming induced epithelial mesenchymal transition mesothelial cells leading peritoneal fibrosis novel culture systems hopefully open new fields regenerative medicine pathological research
myeloid derived suppressor cells mdscs immune suppressive cells hallmarks human cancer mdscs inhibit cytotoxic lymphocytes ctls cell functions promote tumor immune escape progression therefore considered key targets cancer immunotherapy recent studies determined key role apoptosis pathways tumor induced mdsc homeostasis known ceramide plays key role regulation mammalian cell apoptosis study aimed determine efficacy underlying molecular mechanism ceramide suppression mdscs treatment tumor bearing mice lcl lysosomotropic inhibitor acid ceramidase significantly decreased mdsc accumulation vivo using mdsc like myeloid cell model determined lcl targets lysosomes increases total cellular ceramide level although mdsc like cells functional apoptosis pathways lcl induced mdsc death occurs apoptosis necroptosis independent mechanism lcl treatment resulted increase number autophagic vesicles heterolysosomes swollen ers finally concomitant inhibition cathepsin cathepsin required significantly decrease lcl induced cell death observations indicate lcl targets lysosomes activate cathepsin cathepsin resulting interrupted autophagy stress culminates mdsc death therefore ceramidase inhibitor potentially effective adjunct therapeutic agent suppression mdscs enhance efficacy ctl based cancer immunotherapy
background flow cytometric analysis surface immunoglobulin light chains sigl used simple method evaluating monoclonal cell proliferation however sigl expression kappa lambda occasionally undetectable cases cell non hodgkin lymphomas nhl purpose study investigate clinical pathological characteristics nhl cases methods retrospectively analyzed cases previously untreated sigl negative nhl cases diagnosed tokai university hospital january february medical charts reviewed results cases several clinical features diffuse large cell lymphoma dlbcl high serum lactate dehydrogenase level clinical stage iii complex karyotypes seven eight evaluated patients express cytoplasmic igl dna rearrangement pattern igl showed diversity analyzed patients year event free survival sigl negative nhl cases significantly better rituximab containing chemotherapies comparison regimens without although statistical significance dlbcl cases analyzed conclusions findings suggest sigl negative nhl cases predominantly developed dlbcl advanced disease heterogeneous molecular level
past decade mass spectrometry based proteomics greatly contributed shaping knowledge saccharomyces cerevisiae mitochondria initial identification novel essential components purified protein complexes actual characterization mitochondrial proteome specific analysis mitochondrial subcompartment proteomes study regulatory mechanisms govern mitochondrial homeostasis provide overview relevant mitochondrial proteome studies furthermore discuss future possibilities proteomics improve existing understanding mitochondria although mitochondria first organelles intensively studied using proteomics indeed recent progress development powerful sensitive methods instrumentation data analysis strategies indicate beginning exploit full potential mitochondrial proteomics possibilities decipher cell biology beside mere quantitative inventory different conditions instance include studying role multiple post translational modifications mitochondrial homeostasis well system wide mapping protein protein complexes protein lipid interactions published elsevier behalf mitochondria research society
murine models suggest micrornas mir mir may play central roles regulation subcutaneous adipose tissue sat development type diabetes microrna mir may reduce adipose tissue expandability cause ectopic lipid accumulation insulin resistance aimed explore genetic non genetic factors regulate micrornas human sat investigate impact metabolism humans levels mir mir mir measured sat biopsies elderly monozygotic dizygotic twins using real time pcr heritability estimates calculated multiple regression analyses performed study associations micrornas measures metabolism well micrornas possible regulating factors found increased bmi associated increased mir expression levels addition mir levels positively associated plasma glucose levels hemoglobin independently bmi heritability estimates three micrornas low conclusion expression levels mir mir mir adipose tissue primarily influenced non genetic factors mir may involved development adiposity control glucose metabolism humans
although cancer outcome results interplay genetics environment researchers making great effort applying molecular biology prognostication differentiated thyroid cancer dtc nevertheless role molecular characterisation prognostic setting dtc still nebulous among common well characterised genetic alterations related dtc including mutations braf ras ret rearrangements braf mutation showing unequivocal association clinical outcome unfortunately accuracy strongly limited low specificity recently introduction next generation sequencing techniques led identification tert promoter mutations dtc genetic abnormalities may identify small subgroup tumours highly aggressive behaviour thus improving specificity molecular prognostication although knowledge prognostic significance mutations still anecdotal mutations tert promoter showed clear association clinical outcome nevertheless genetic marker needs analysed according multigenetic model prognostic effect becomes negligible present isolation given genetic alteration demonstrated taken alone enough specificity occurrence driving mutations emerging independent genetic signature aggressiveness possible future application clinical practice dtc prognostication may empowered near future non tissue molecular prognosticators including circulating braf mirnas although promising use markers needs refined technical sight actual prognostic value still yet validated
flavonoid glycosides required number crucial roles planta potential development variety agricultural medicinal biotechnological applications number recent advancements made characterizing glycosyltransferases enzymes responsible synthesis important molecules review glycosyltransferases considered regard biochemical properties expression patterns levels enzyme activity development structure function relationships presented historical context highlight critical findings particularly regard innovative work come research citrus species plant glycosyltransferase crystal structures solved past decade either alone complex sugar donor acceptor molecules discussed application results structures inform current structure function work well implications goals future crystallography tertiary modeling studies considered thorough understanding properties glycosyltransferases critical step future biotechnological application enzymes areas crop improvement custom design enzymes produce desired compounds nutritional medicinal usage
gene editing relatively recent concept molecular biology field traditional genetic modifications animals relied classical toolbox aside technical improvements additions remained unchanged many years classical methods involved direct delivery dna sequences embryos use embryonic stem cells species mice rats possible establish livestock advent somatic cell nuclear transfer platforms provided alternative technically challenging approaches genetic alteration loci however entire landscape changed appearance different classes genome editors initial zinc finger nucleases transcription activator like effector nucleases recently development clustered regularly interspaced short palindromic repeats crispr crispr associated proteins cas gene editing currently achieved crispr cas mediated methods technological advancement boosted capacity generate almost genetically altered animal envisaged
intestine displays architecture repetitive crypt structures consisting different types epithelial cells lamina propia containing immune cells stroma heterogeneous cells contribute intestinal homeostasis participate antimicrobial host defense therefore identifying surrogate model studying immune response antimicrobial activity intestine vitro setting extremely challenging vitro studies using immortalized intestinal epithelial cell lines even primary crypt organoid culture represent exact physiology normal intestine microenvironment discuss method culturing mouse colon tissue culture dish vivo organ culture system implemented studies related antimicrobial host defense responses representative experiments showed colons organ culture express antimicrobial peptides response exogenous beta antimicrobial effector molecules produced colon tissues organ culture efficiently kill escherichia coli vitro approach therefore utilized dissect role pathogen danger associated molecular patterns cellular receptors regulating intestinal innate immune responses antimicrobial host defense responses
superoxide dismutases sods constitute first line cellular defense oxidative stress plants sods generally occur three different forms prosthetic metals cloned full length cdna thellungiella halophila sod gene thcsd using degenerate pcr rapid amplification cdna ends race sequence analysis indicated thcsd gene genbank accession number open reading frame deduced amino acid polypeptide predicted molecular weight kda estimated putative binding site recombinant thcsd protein expressed escherichia coli assayed sod enzymatic activity native polyacrylamide gel sod activity thcsd inactivated potassium cyanide hydrogen peroxide sodium azide confirming thcsd sod northern blotting demonstrated thcsd expressed roots stems leaves thcsd mrna levels increased fold plants treated sodium chloride nacl abscisic acid aba indole acetic acid iaa fold treated uvb light results indicate thcsd involved physiological pathways activated variety environmental conditions
linked agammaglobulinemia xla associated broad range infections enteroviral disease represents one damaging infections risk enteroviral infection xla lower setting intramuscular immunoglobulin patients without immunoglobulin replacement rate infection declined significantly era intravenous immunoglobulin replacement enteroviruses cause inflammation nearly every organ xla infections often manifest dermatomyositis chronic meningoencephalitis difficulty delay recognizing symptoms lack specific therapy contribute poor outcomes furthermore cerebrospinal fluid detection enteroviruses sensitive reluctance perform brain biopsies lead significant delays feature compromising outcomes lack specific therapy high dose peripheral intraventricular immunoglobulin used failure still common new antienteroviral drugs development show promise immunodeficient patients life threatening infections enterovirus american academy allergy asthma immunology
aims fip gsi fungal immunomodulatory protein found ganoderma sinense antitumour anti allergy immunomodulatory activities regulated fip gsi gene study aimed express fip gsi gene sinense coprinopsis cinerea increase yield fips gsi methods results fungal expression vector pbfip gsi containing gpd promoter agaricus bisporus fip gsi gene sinense constructed transformed cinerea pcr southern blotting analysis verified successful integration exogenous gene fip gsi genome cinerea pcr northern blotting analysis confirmed fip gsi gene transcribed cinerea yield fip gsi protein reached fresh mycelia molecular weight fip gsi kda fip gsi capable hemagglutinating mouse red blood cells activity observed towards human red blood cells vitro conclusions fip gsi sinense successfully translated cinerea yield bioactive fip gsi protein high significance impact study first report using cinerea heterologous expression fip gsi protein might supply basis large scale production protein
background shortened telomere length observed variety diseases objective analyze mean telomere length patients major depressive disorder key question whether telomere length varies different groups depressive patients methods obtained blood samples patients major depressive disorder healthy subjects isolated genomic dna measured mean telomere length using telomere restriction fragments southern blotting grouped patients according therapy received including total antidepressant dose results mean telomere length entire patient group significantly shorter control group observed significant difference telomere length among different patient groups patient groups significantly shorter telomeres healthy subjects analysis revealed significant association telomere length illness duration telomere length severity depression determined hamilton score conclusion results provide evidence major depressive disorder associated shortened telomeres however differences applied therapy duration illness severity depression seem influence telomere length depression anxiety wiley liss inc
systematic identification characterization genetic perturbations proven useful decipher gene function cellular pathways however conventional approaches permanent gene deletion applied essential genes pioneered unique collection similar temperature sensitive lethal mutants studying cell cycle regulation unicellular green algae chlamydomonas reinhardtii mutations identify essential genes alleles conditionally inactivated temperature shift providing valuable tools identify analyze essential functions mutant collections much valuable close comprehensive since scattershot collections miss important components however requires efficient collection large number mutants especially wide target screen describe robotics based pipeline generating lethal mutants analyzing phenotype chlamydomonas technique applied microorganism grows agar collected mutants probably including mutations cell essential pathways including new candidate cell cycle mutations subsequent molecular cellular characterization mutants provide new insights plant cell biology comprehensive mutant collection essential prerequisite ensure coverage broad range biological pathways methods integrated downstream genetics bioinformatics procedures efficient mapping identification causative mutations beyond scope manuscript
vegetarian diet demonstrated profound influence human metabolism well aid prevention several chronic diseases relative omnivorous diet however systematic metabolomic studies biochemical changes induced human subjects long term vegetarianism study nmr spectroscopy combination multivariate statistical analysis applied explore variability metabolic urinary profiles healthy populations four groups lactovegetarian male vegmale lactovegetarian female vegfemale omnivorous male omnmale omnivorous female omnfemale differences metabolic profiles examined relation diet gender principal component analysis pca spectral integrals found influential low molecular weight metabolites responsible differences diet groups acetyl glycoprotein nag succinate citrate trimethylamine oxide tmao taurine glycine hippurate phenylalanine methylhistidine formate whereas differences gender groups discriminatory metabolites nag succinate creatinine arginine tmao taurine hippurate mannitol phenylalanine methylhistidine results pca four groups indicated diet plays greater role influencing metabolite differences gender exploration work shows potential metabolomics applied nutritional physiological studies aid studies
immune system permanently exposed several environmental influences adverse effects immune cells organs leading immunosuppression inappropriate immunostimulation called direct immunotoxicity natural compound tulipalin tupa lactone alpha methylene gamma butyrolactone moiety influence immune system lead allergic contact dermatitis vitro study focused effects tupa using two immune cell lines jurkat cells thp monocytes evaluate immunotoxic potential compound proteomic approach applying gel electrophoresis maldi tof tof combination metabolomic analysis used exposure cells tupa thp cells showed strong robustness tupa treatment since five proteins altered contrast jurkat cells increase abundance proteins decrease six proteins determined intracellular proteins mapped biological processes especially accumulation chaperones influence purine synthesis observed changes purine synthesis confirmed metabolomic analysis conclusion data indicate possible target processes low doses tupa jurkat cells provides knowledge tupa affects functionality immune cells
lipoxygenases loxs implicated inflammatory hyperproliferative diseases structural biology enzymes well developed loxs constitute single polypeptide chain proteins fold two domain structure crystal structure two domains tightly associated small angle ray scattering data dynamic fluorescence studies suggested high degree structural flexibility involving movement terminal domain relative catalytic subunit inspected interdomain interface found limited number side chain contacts involved interactions two structural subunits one contact points involves tyrosine terminal domain aromatic amino acid invariant vertebrate loxs regardless overall sequence identity explore detail role aromatic interactions interdomain association mutated various residues quantified structural functional consequences alterations found loss aromatic moiety position impaired catalytic activity membrane binding capacity mutant enzymes although fluorescence emission spectra wild type mutant enzyme species indistinguishable mutation led enlargement molecular shape enzyme detected analytic gel filtration structural alteration shown associated loss protein thermal stability possible role tight interdomain association enzyme structural performance discussed elsevier rights reserved
background genetic diversity neotropical fish fauna underrepresented public databases distortion evident order siluriformes suborders siluroidei loricarioidei share equivalent proportion species although far less known genetics latter clade endemic neotropical region recently information gap evident study structural diversity fish mitochondrial genomes hampered precise chronological resolution siluriformes also prevented molecular ecology investigations catfishes interactions environment responses anthropogenic changes potential uses results using high throughput sequencing provide nearly complete mitochondrial genomes loricariidae one callichthyidae species structural features highly conserved notable exception identified monophyletic clade comprising species hemiancistrus hypostomini peckoltia clades similar nucleotide long deletion encompassing seven nucleotides end conserved sequence block csb control region expression mitochondrial genes followed usual punctuation pattern heteroplasmic sites identified species retrieved phylogeny strongly corroborates currently accepted tree although bringing debate relationship schizolecis guntheri pareiorhaphis garbei highlighting low genetic variability within peckoltia clade eco morphologically diverse taxonomically problematic group conclusions herein launched use high throughput mitochondrial genomics studies loricarioidei species new genomic resources reduce information gap molecular diversity neotropical fish fauna impacting capacity investigate variety aspects molecular ecology evolution fishes additionally species showing partial csb candidate models study replication transcription vertebrate mitochondrial genome
notch mediated binary cell fate decisions cells adopt two different fates according levels pathway activation dependent non dependent fate cells maintain activity levels time remains largely unknown address question cell lineage gives rise drosophila mechanosensory organs lineage primary precursor cell undergoes stereotyped sequence oriented asymmetric cell divisions transits two neural precursor states acquiring neuron identity using combination genetic cell biology strategies show escargot scratch two transcription factors belonging snail superfamily maintain neural commitment directly blocking transcription target genes propose snail factors act displacing proneural transcription activators dna binding sites snail factors maintain noff state neural precursor cells buffering ectopic variation level activity since escargot scratch orthologs present precursor cells findings fundamental understanding precursor cell fate acquisition systems
advent increasing availability super resolution microscopies prompted searchers investigate questions localization clustering hope providing precise relevant data focus problem studying inter organelle interfaces topic growing interest cell biology sought identify mitochondria associated membrane mam candidate sites dual colour large field super resolution images mams specialized lipid microdomains endoplasmic reticulum close apposition mitochondria using total internal reflection fluorescence structured illumination microscopy tirf sim brunstein optics express achieved three dimensional spatial resolution approximate based experimental simulated data studied spatio temporal resolution affects common descriptors localization apparent overlap scaled inversely spatial resolution expected objects close apposition merge independently precise metrics used important live cell imaging organelle motility made measurements uncertain rendering statements physiological stimulations pharmacologic manipulations affect localization less robust organelle density equivalent choice different subcellular regions interest rois marked effect amount localization size roi chosen study calls prudence interpreting localization data suggests cell organelle motility choice roi analysed effective spatiotemporal resolution impact result hence systematically stated particularly localization arguments used assess effect drug application cellular signalling pathways
enterovirus belongs picornavirus family common pathogen clinics early study regarding infection mainly utilized pathogen culture retarding diagnosis treatment recent progress molecular biology made progress pathogen diagnosis study thus investigated expression cerebrospinal fluid csf children central nervous infection attempt discuss clinical significance genotyping children aseptic encephalitis meningitis enrolled parallel controls fluorescent pcr used screen csf positive results obtained samples values less primary screening amplification segment performed followed sequencing positive fragments genotyping rna detected control patients aseptic encephalitis patients rna expression among samples positive segment samples positive sequencing segments showed homology gen bank standard viral strain fluorescent pcr detect rna csf central nervous infection children efficiency accuracy combined genotyping sequence improve sensitivity typing
melanoma form cancer initiates melanocytes melanoma multiple phenotypically distinct subpopulation cells embryonic like plasticity involved self renewal tumor initiation metastasis progression provide reservoir therapeutically resistant cells cancer stem cells cscs identified characterized based various unique cell surface intracellular markers cscs exhibit different molecular pattern respect non cscs maintain stemness chemoresistant features specific signaling cascades cscs weak immunogenicity act immunosupressor host system melanoma treatment becomes difficult survival greatly reduced patient develop metastasis standard conventional oncology treatments chemotherapy radiotherapy surgical resection responsible shrinking bulk tumor mass tumor tends relapse thus targeting cscs microenvironment niche addresses alternative traditional cancer therapy combined use cscs targeted traditional therapies may kill bulk tumor cscs offer promising therapeutic strategy management melanoma
objective properties self renewal division spermatogonial stem cells sscs support spermatogenesis number reported methods vitro ssc culture systems development culture system effectively supports isolation self renewal germline stem cells gscs tremendous benefit clinical trials experimental research potential treatment male infertility current study aims consider cultivation behavior gscs non adherent culture system materials methods experimental study cultured testicular cells neonatal mice agarose coated plates presence dulbecco modified eagle medium dmem medium ctrl group fetal bovine serum fbs dmem group growth factor group contained fbs glial cell derived neurotrophic factor gdnf epidermal growth factor egf fibroblast growth factor fgf mouse spermatogonial stem like colonies isolated approximately weeks digestion testis tissue passages identity mouse spermatogonial stem like cells confirmed immunocytochemistry reverse transcription polymerase chain reaction pcr flow cytometry germ cell markers alpha beta kit thy ret plzf oct statistical significance mean values different groups determined one way analysis variance anova results observed spermatogonial stem like colonies groups ctrl group immunocytochemistry flow cytometry pcr confirmed expressions germ cell markers cells spermatogonial stem like cells observed significant expression germ cell markers groups versus testis cells proliferative apoptotic activities examined annexin fitc alkaline phosphatase assay showed mouse spermatogonial stem like colonies partially positive conclusion non adherent culture system could provide favorable method vitro short term culture spermatogonial stem like cell colonies
lymphocyte monocyte ratio lmr associated survival benefit types cancer relationship lmr rectal cancer investigated conducted retrospective cohort study assess prognostic significance lmr patients nonmetastatic rectal cancer patients rectal cancer underwent potentially curative resection january december enrolled lmr calculated preoperative blood test dividing absolute lymphocyte counts absolute monocyte counts optimal cut value lmr calculated median value basis cut value patients divided groups low group high group total patients rectal cancer eligible study median follow time patients months range months cut value lmr patients divided groups low group lmr univariate multivariate analysis lmr significantly associated overall survival hazard ratio confidence intervals cis disease free survival dfs compared univariate multivariate analysis also indicated lmr significantly associated dfs addition subgroup analysis tumor node metastasis stage existed significance lmr dfs although easy access highly efficient laboratorial inflammatory marker lmr predict prognosis nonmetastatic rectal cancer patients
pregnane receptor pxr member nuclear receptor superfamily expressed liver intestine also tissues cells pxr activated wide variety endobiotics dietary compounds pharmaceuticals nuclear receptor serves master transcriptional regulator cypa isozymes also regulates large number enzymes transporters involved pharmacokinetics endobiotics xenobiotics pxr impact energy homeostasis glucose lipid metabolism regulation pxr activation also hepatoprotective toxic bile acids new roles pxr identified bone homeostasis inflammatory bowel disease liver steatosis fibrogenesis pxr directly regulates expression multidrug resistance protein mdr important proteins involved drug metabolism drug drug interactions affect patients cardiovascular disease tuberculosis hiv cancer especially cancer patients high risk interactions treated multi drug combinations pxr activation affect efficacy chemotherapeutics thus targeting pxr may represent novel strategy improvement pharmacokinetics chemotherapeutic agents thereby providing safer effective therapies cancer patients
immunohistochemistry ihc widely tested low cost rapid ancillary technique available laboratories pathology method generally used diagnostic purposes several studies investigated sensitivity specificity different immunohistochemical anti bodies surrogate test determination predictive biomarkers non small cell lung cancer nsclc particularly epidermal growth factor receptor egfr gene mutations anaplastic lymphoma kinase alk gene ros rearrangements review critical examination works comparing consistency ihc expression conventional molecular techniques identify genetic alterations predictive value nsclc discussed summarizing data sensitivity specificity antibodies alk ros consistent time come trust ihc least cost effective screening tool identify patients rearranged tumors clinical practice hand mutant specific antibodies egfr demonstrate good specificity lowto fair sensitivity raising cautions employment robust predictive biomarkers brief comment preliminary experiences antibodies braf ret met also included
internal energy reserves animals limited current investment reproduction often decreases survival future reproductive success studies showed copulatory activities impair strength immune function insects recent evidence contradictory study tested whether copulatory activity affects rate encapsulation response males calopteryx splendens damselfly allopatric populations sympatric populations splendens stay together superior competitor virgo also counted number eugregarines common parasites damselflies copulation activity affect immunity splendens males allopatric populations sympatric populations splendens males gut parasites found significant interaction parasite number copulatory activity rate encapsulation results suggest costs reproduction higher infected males may affect reproductive investment sexual selection
objective ulinastatin reduces high permeability vascular endothelial cells induced tumor necrosis factor alpha inf alpha study investigated molecular mechanism behind effect aim understanding action ulinastatin sepsis therapy exploring novel therapeutic strategies sepsis patients methods tnf alpha treated human umbilical vein endothelial cell line employed inflammation model horseradish peroxidase permeability assays epithelial voltmeter method used measure permeability cells immunocytochemistry used assay expression mypt distribution morphology actin expression key molecules related vascular endothelial permeability rhoa rock mypt mypt cadherin detected immunocytochemistry assays western blotting quantitative real time polymerase chain reaction results incubation tnf septic serum transendothelial electrical resistance cells decreased permeability cells increased significantly expression mypt higher cadherin lower compared control group actin redistributed formation additional stress fibers cells ulinastatin treatment moderated phenomena immunocytochemistry assays western blots showed expression rhoa rock significantly upregulated cells treated tnf alpha however ulinastatin could inhibit high expression two proteins treatment tnf alpha ulinastatin compared normal cells overexpression rhoa upregulated expression rhoa rock mypt downregulated expression cadherin restored hyperpermeability vascular endothelial cells due tnf alpha treatment conclusions ulinastatin inhibited hyperpermeability vascular endothelial cells induced tnf alpha inhibitory effect ulinastatin may related rhoa rock signaling pathway elsevier rights reserved
studies examined effect black tea camellia sinensis theaflavins obesity related tart gets pancreatic lipase plays central role fat metabolism validated target weight loss compared inhibitory efficacy individual theaflavins explored underlying mechanism theaflavin digallate tfdig theaflavin gallate theaflavin gallate theaflavin inhibited mol presence location galloyl ester moiety essential inhibitory potency tfdig exhibited mixed inhibition respect substrate concentration silico modeling showed theaflavins bind asn asp form pocket adjacent active site galloyl containing theaflavins predicted perturb protonation data provide putative mechanism explain anti obesity effects tea elsevier ltd rights reserved
purpose current study investigated hyperpolarized urea possible imaging biomarker renal function means intrarenal osmolality gradient methods hyperpolarized three dimensional balanced steady state mri experiments alongside kidney function parameters quantitative polymerase chain reaction measurements performed two groups rats streptozotocin type diabetic group healthy control group results significant decline intrarenal steepness urea gradient found weeks untreated insulinopenic diabetes agreement increased urea transport transcription conclusion mri hyperpolarized urea monitor changes corticomedullary urea concentration gradients diabetic healthy control rats magn reson med international society magnetic resonance medicine
ten years initial identification human renalase first genuinely catalytic substrates identified throughout prior decade consensus belief renalase produced predominantly kidney catalytically oxidizes catecholamines order lower blood pressure slow heart prevailed belief however based fundamentally flawed scientific observations include control reactions account well known autoxidation catecholamines oxygenated solutions nonetheless initial claims served kernel rapidly expanding body research largely predicated belief catecholamines substrates enzyme proliferation scientific studies pertaining renalase hormone proceeded unabated despite well reasoned expressions dissent indicated deficiencies initial observations inconsistencies group recently identified isomeric forms beta nad substrates renalase substrates arise non specific reduction beta nad forms beta dihydronad beta nad beta dihydronad beta dihydronad latter two substrates renalase renalase oxidizes substrates rate constants fold faster claimed catecholamines electrons harvested delivered dioxygen via enzyme fad cofactor forming beta nad products would appear metabolic purpose chemistry alleviate inhibitory effect beta dihydronad beta dihydronad primary metabolism dehydrogenase enzymes identification genuinely catalytic activity renalase calls evaluation much research enzyme definitive links renalase catecholamine consumption physiological responses reported article part special issue entitled physiological enzymology protein functions elsevier rights reserved
bacterial community analyses samples pilot plant treatment acid mine drainage amd lignite mining district lusatia east germany previously demonstrated dominance two groups acidophilic iron oxidizers novel candidate genus ferrovum group comprising gallionella like strains since pure culture proven difficult previous studies used genome analyses cultures consisting ferrovum strain heterotrophic acidophile acidiphilium order obtain insight life style novel bacteria report attempts undertake similar study gallionella like acidophiles amd isolates belonging family gallionellaceae still restricted microaerophilic neutrophilic iron oxidizers sideroxydans gallionella availability genomic metagenomic sequence data acidophilic strains genera therefore relevant defining adaptive strategies homeostasis particularly case since complete genome sequences neutrophilic strains capsiferriformans lithotrophicus permit direct comparison metabolic capacity neutrophilic acidophilic members genus thus detection biochemical features specific acidophilic strains support life acidic conditions isolation attempts undertaken study resulted microaerophilic enrichment culture ade based rrna gene sequence analysis consisted least three four distinct gallionellaceae strains appear closely related neutrophilic iron oxidizer lithotrophicus key hypotheses inferred metabolic reconstruction metagenomic sequence data acidophilic sideroxydans strains include putative role urea hydrolysis formate oxidation cyanophycin decarboxylation homeostasis
background recent experiments regarding ndc hec force generation kinetochores chromosome motions prompted speculation possible models interactions positively charged molecules kinetochores negative charge near plus ends microtubules discussion clear picture kinetochores centrosomes establish maintain dynamic coupling microtubules force generation complex motions mitosis remains elusive current paradigm molecular cell biology requires specific molecules molecular geometries force generation identified however possible explain several different mitotic motions including poleward force production kinetochores within classical electrostatics approach terms experimentally known charge distributions modeled surface volume bound charges interacting nanometer distances conclusion propose implicating ndc hec bound volume positive charge distribution electrostatic generation poleward force kinetochores consistent wide range experimental observations mitotic motions including polar production poleward force chromosome congression
familial cold autoinflammatory syndrome fcas muckle wells syndrome mws chronic infantile neurological cutaneous articular syndrome neonatal onset multisystem inflammatory disease cinca nomid originally described three distinct diseases identification common genetic origin perceived continuum one disease entity labelled cryopyrin associated periodic syndromes caps mutations nlrp gene chromosome detected many affected patients lead synthesis altered gene product named cryopyrin part nlrp inflammasome causes activation caspase excess production beta driving force behind inflammatory reactions observed caps patients symptomatic patients confirmation mutation using traditional methods genetic analysis may always successful case cinca nomid phenotypes however many cases somatic mutations found using modern methods next generation sequencing ngs technologies contrast low penetrance nlrp variants may also identified healthy family members present low frequencies general population mutation carriers nevertheless present typical signs autoinflammation however phenotype different compared classical caps presentation patients display unspecific systemic inflammatory signs frequently show organ involvement less often detection nlrp gene mutations may viewed confirmatory caps still predominantly clinical diagnosis therefore recently published diagnostic criteria require demonstration mutation
since analysis software genome wide association studies gwas currently exploit unrelated individuals need efficient applications handle general pedigree data mixtures population pedigree data even datasets thought consist unrelated individuals may include cryptic relationships lead false positives discovered controlled addition family designs possess compelling advantages better equipped detect rare variants control population stratification facilitate study parent origin effects pedigrees selected extreme trait values often segregate single gene strong effect finally many pedigrees available important legacy era linkage analysis unfortunately pedigree likelihoods notoriously hard compute paper reexamine computational bottlenecks implement ultra fast pedigree based gwas analysis kinship coefficients either based explicitly provided pedigrees automatically estimated dense markers strategy works random sample data pedigree data mix entails loss power allows number covariate adjustments including correction population stratification allows testing snps additive dominant recessive models accommodates univariate multivariate quantitative traits typical personal computer six cpu cores ghz analyzing univariate hdl high density lipoprotein trait san antonio family heart study snps individuals pedigrees takes less min memory complete multivariate qtl analysis three time points longitudinal hdl multivariate trait takes less min memory algorithm implemented ped gwas analysis option mendel statistical genetics package freely available macintosh linux windows platforms
root hairs single cells develop tip growth process shared pollen tubes axons fungal hyphae however structural plant cell walls impose constraints accomplish tip growth addition polysaccharides plant cell walls composed hydroxyproline rich glycoproteins hrgps include several groups glycoproteins including extensins exts proline hydroxylation early post translational modification ptm hrgps catalyzed prolyl hydroxylases phs defines subsequent glycosylation sites work genetic analyses prove lesser extent pivotal root hair tip growth second demonstrate vitro preferred specificity ext substrates rather hrgps third promoter protein swapping approaches show interchangeable functions replace three phs shown targeted secretory pathway forms dimers finally explore impact deficient proline hydroxylation cell wall architecture taken together results support model correct peptidyl proline hydroxylation exts possibly hrgps required proper cell wall self assembly hence root hair elongation arabidopsis thaliana
widespread use phosphorothioate esters agricultural pesticides chemical weapons mechanistic probes enzymology sparked interest reactivity thio substituted analogues phosphate esters brief account summarize recent developments understanding mechanisms hydrolysis solvolysis methanol phosphorothioates containing sulfur atom bridging non bridging position small number highly efficient catalytic systems containing metal ions iii developed promote degradation various classes phosphorothioate esters mechanisms base promoted solvolytic reactions water methanol metal catalyzed cleavage presented well discussion energetics catalytic processes salient features aim review provide reader contemporary physical organic description phosphorothioate ester cleavage article part special issue entitled chemistry mechanism phosphatases diesterases triesterases elsevier rights reserved
tongue elaborate complex heterogeneous tissues taste organs diverse embryonic origins lingual taste organs papillae composed epithelium includes specialized taste buds basal lamina lamina propria core matrix molecules fibroblasts nerves vessels taste organs dynamic cell biology sensory function homeostasis requires tight regulation specific compartments niches recently hedgehog pathway emerged essential regulator maintains lingual taste papillae taste bud progenitor cell proliferation differentiation neurophysiological function activating suppressing signaling genetic models pharmacological agents used cancer treatments disrupts taste papilla taste bud integrity eliminate responses taste nerves chemical stimuli touch temperature understanding regulation taste organ homeostasis contributes knowledge basic biology underlying taste disruptions patients treated pathway inhibitors
remain questions answers regarding manifestation certain diseases ebola otherwise healthy individuals others sasang medicine offers possible clue solving mystery introducing constitutionally based intrinsic approach determining disease susceptibility sasang constitution identified detailed examination inherent physiological psychological traits likely yet associated specific genetic patterns hence anticipated examination sasang model contribute advancement medical research treatment establishing genetically traceable psychological physiological traits contribute offer protection various diseases progress along journey additional research involving sasang based organ associated emotions inherent emotional physiological inclinations warranted study presents argument favor additionally examining constitutionally specific disease components related viral epidemiology
composting organic material dependent microbial activity however dynamics microbial community composting process remain obscure denaturing gradient gel electrophoresis rdna amplicons chicken manure based compost applied characterize components microbial community composting process addition activity key microbial enzymes monitored arcobacter spp marinospirillum spp dominant species prior composting whereas thermotogae spp became strongly represented composting process proceeded bacillus cohnella spp featured various phases correlation analysis showed diversity microbial community positively correlated compost total nitrogen level carbon nitrogen ratio activity protease negatively correlated organic carbon content seed germination indices institut pasteur published elsevier masson sas rights reserved
last two decades hyper immunoglobulin syndromes characterized clinically molecularly patients genetically determined primary immunodeficiencies however detection low ige levels defined detection limit routine clinical immunology laboratory received little attention analysed association serum iga igm igg levels including igg subclasses low normal high serum ige levels patients evaluated singlecentre patient immunodeficiency allergy clinic correlation serum ige levels igg subclasses depended clinical phenotype patients immunodeficiencies ige correlated igg igg igg contrast patients referred signs allergy ige correlated igg igg low ige result associated low igg igg allergy referrals immunodeficiency referrals low ige result significantly lower igg igg igg levels hierarchical clustering non ige immunoglobulin profiles igm iga igg igg validated non ige immunoglobulin levels predict clinic referral phenotype low ige patients results suggesto guide clinical management patients low serum ige levels
single molecule experimental methods provided new insights biomolecular function dynamic disorder transient states invisible conventional measurements novel nonfluorescent single molecule technique involves attaching single molecules single walled carbon nanotube field effective transistors swnt fets ultrasensitive electronic devices provide long duration label free monitoring biomolecules dynamic motions however generalization swnt fet technique first requires design rules predict success applicability devices report transduction mechanism linking enzymatic processivity electrical signal generation swnt fet interaction swnt fets enzyme lysozyme systematically dissected using eight different lysozyme variants synthesized protein engineering data prove effective signal generation accomplished using single charged amino acid appropriately located providing foundation widely apply swnt fet sensitivity biomolecular systems
helicobacter pylori important human pathogen causes chronic gastritis associated development peptic ulcer disease gastric malignancies oral cavity implicated potential pylori reservoir may therefore involved reinfection stomach sometimes occur following treatment pylori infection objectives paper determine presence pylori oral cavity examine relationship oral pylori subsequent gastritis gastric biopsies saliva samples dental plaques obtained dyspeptic adults dna extracted evaluated presence pylori using polymerase chain reaction southern blotting methods persons gastritis frequently positive pylori stomachs statistically significant correlation presence pylori gastric biopsies oral cavity results suggest relationship gastric infection presence bacterium oral cavity despite pylori present oral cavity variable distribution saliva dental plaques suggesting existence reservoir species potential association gastric reinfection
terminal acetylation nta one abundant protein modifications known terminal acetyltransferase nat machinery conserved throughout eukarya past years function nta begun slowly elucidated includes modulation protein protein interaction protein stability protein function protein targeting specific cellular compartments many functions studied context naa nata however starting really understand full complexity picture roughly human proteins substrates naa impact modification studied besides acting nat nata complex recently functions linked naa including post translational nta lysine acetylation nat kat independent functions also recent publications linked mutations naa various diseases emphasizing importance naa research humans recent design synthesis first bisubstrate inhibitors potently selectively inhibit nata naa complex monomeric naa hnaa increases toolset analyze naa function elsevier rights reserved
aldehyde oxidase aox metabolic enzyme catalyzing oxidation aldehyde aza aromatic compounds hydrolysis amides moieties frequently shared majority drugs despite key role human metabolism date fragmentary information chemical features responsible aox susceptibility reported local structure metabolism relationships based small number similar compounds developed study reports comprehensive coverage chemical space structures high risk aox phase metabolism humans compounds studied identify site metabolism themetabolite electronic supported density functional theory dft calculations exposure effects considered rationalizing structure metabolism relationship
red spotted grouper epinephelus akaara protogynous hermaphroditic fish shows characteristic natural sex change study year old female groupers successfully reversed functional males oral administration alpha methyltestosterone days protein inhibitor neuronal nitric oxide synthase pin gene cloned sex reversed male gonads using modern suppression subtractive hybridization ssh cdna synthesis rapid amplification cdna ends polymerase chain reaction race pcr full length cdna pin containing open reading frame orf encodes amino acids virtual northern blotting reverse transcription pcr pcr analysis revealed pin specifically transcribed sex reversed male gonads tissue specific expression analysis showed pin gene expressed brain heart liver spleen kidney muscle tissue analyses expression pattern pcr western blotting indicated transcription level expression pin gonads increased gradually transformation female male results showed pin strongly expressed sex reversed male gonad scarcely female gonad expression upregulated change sex proceeds taken together findings demonstrate pin associated induced sex transition red spotted grouper precise role gene process remains investigated elsevier ireland ltd rights reserved
biological functions globo series glycosphingolipids well understood study murine cdnas two glycosyltransferases responsible synthesis globo series glycolipids mrna expression genes analyzed distribution products also analyzed murine cdnas synthase synthase predicted type membrane proteins amino acids respectively northern blotting synthase gene mainly expressed kidney lung also detected many tissues synthase expressed brain heart kidney liver skin testis immunohistological analysis mainly expressed proximal tubules revealed coincidental expression angiotensin converting enzyme ace spleen detected pre cells peripheral region white pulp suggested coincidental expression also expressed endothelia alveolar capillaries lung sebaceous ducts aside hair follicles also detected mainly proximal tubules kidney endothelia alveolar capillaries lung also detected epithelium bronchus seminiferous tubules tails spermatozoa testis blood vessels choroids plexus endothelial cells brain central hepatoportal veins liver expression patterns two genes products almost corresponded exception results would provide essential information functional studies globo series glycolipids
many years role interferon ifn characterized primarily context viral infections however regulatory functions mediated ifn also described bacterial infections tumor immunology recently interest understanding immune functions mediated ifn dramatically increased field protozoan infections review discuss discrete role ifn immune response major protozoan infections plasmodium leishmania trypanosoma toxoplasma
object current work study low energy ion beam interactions silkworm eggs thus provide understanding mechanisms involved ion bombardment induced direct gene transfer silkworm eggs paper using low energy ion beam bombardment combined piggybac transposon developed novel method induce gene transfer silkworm using bombardment conditions optimized egg incubation key ion fluences ions dry state vacuum vector pbac egfpaf helper plasmid phapig successfully transferred silkworm eggs results obtained pcr assay genomic southern blotting analysis generations provide evidence low energy ion beam generate craters play role acting pathways exogenous dna molecules silkworm eggs elsevier rights reserved
cancers shown higher temperature surrounding normal tissue higher temperature due heat generated internally cancer higher temperature cancer compared surrounding tissue enables thermodynamic analysis carried show increased entropy production cancer compared surrounding tissue termed excess entropy production excess entropy production expressed terms heat flow cancer surrounding tissue enzymic reactions cancer surrounding tissue excess entropy production cancer drives away stationary state characterised minimum entropy production treatments reduce inflammation therefore temperature drive cancer towards stationary state anti inflammatory agents aspirin non steroidal anti inflammatory drugs corticosteroids also thyroxine analogues shown using various criteria reduce progress cancer
health benefits associated diets rich anthocyanins ascribed multilevel biological activities including antioxidative anti inflammatory effects present study addresses lipoxygenase inhibition mechanism anthocyanins may exert health promoting effects inhibitory potential delphinidin cyanidin peonidin malvidin glycosides glucosides galactosides arabinosides well aglycons analyzed using soybean lipoxygenase human neutrophil granulocyte lipoxygenase determined values comprised wide range front sub level practically effect inhibition glycosides values glucoside dpglc galactoside dpgal found effective soybean lipoxygenase inhibitors strong inhibitory potential also reflected values determined anthocyanins ill lipoxygenase inhibition exhibiting respectively mechanism inhibition experiments carried lipoxygenase revealed uncompetitive type considering powerful inhibitory properties glycosides relation currently known availability human metabolism vivo prevention inflammatory diseases anthocyanins could envisaged
micrornas mirnas involved sequence specific cleavage translational repression deadenylation specific target mrnas resulting post transcriptional gene silencing epstein barr virus ebv infection induces cellular non coding rnas vault rnas mirnas mir mir mir mir upregulated various tumours plays role innate immunity show ebv encoded latent membrane protein lmp induces expression mir via kappa lmp activates mir promoter promoter mutation kappa response elements conversely lmp mutant deficient kappa activation failed activate promoter cao lmp variant increased potential induce kappa also showed higher ability activate mir promoter compared standard lmp northern blotting revealed high levels mir mir burkitt lymphoma cell line jiioye expresses lmp lmp deficient phr mutant derived jiioye expresses less mir mir likewise ebv latency type burkitt lymphoma cells low lmp levels also contain low levels either mir mir levels increased lmp expressing ebv latency type iii cells expression lmp phr cells upregulates mir levels neither mir mir detectable bcbl cells transformed kaposi sarcoma herpes virus kshv hhv possible induction mir plays role induction maintenance ebv latency modulating innate immune responses virus infected host cell
superactivity phenomenon concept expresses significant increase enzymatic activity common surfactants ionic liquids emulsions context work presents overview literature subject focused type characteristics surfactants ils reported literature superactivity inductors enzymes reactions hitherto investigated superactivity context intends emphasize necessity multidisciplinary approach subject bringing together scientific communities different fields foster understanding phenomenon identify type reactions processes could improved account potential application industrial level elsevier rights reserved
isolation characterization moderately halophilic bacterium virgibacillus emb west coast india described present study produced five different extracellular proteases conditions optimized maximum protease production optimized conditions viz medium containing yeast extract peptone mannitol nacl kcl cacl mgso produced protease protease partially purified deae ion exchange sephadex gel filtration chromatography purified preparation contained two unseparated proteases apparent molecular masses kda respectively preparation stable different concentrations nacl range exhibited maximal activity temperature degrees nacl max values towards casein min respectively inhibition proteolytic activity edta phenanthroline indicated metalloprotease nature proteases exhibited remarkable stability presence salt organic solvents properties enable novel applications non aqueous enzymology additive detergent formulations
background regulation adaptive survival mechanism cancer cells chemotherapy three new phytochemicals including two benzophenones guttiferone oblongifolin xanthone isojacaruebin iso potential anti cancer agents however capability compounds increase multidrug resistance mdr regulation cancer cells reported purpose study investigate effects iso regulation colorectal adenocarcinoma cells caco cells addition mechanisms underlying inductive effect also determined methods inductive effect iso expression transcription level measured real time reverse transcription polymerase chain reaction reactive oxygen species production determined dichlorofluorescin diacetate assay protein content involvement mitogen activated protein kinases mapk pathway evaluated western blot analysis results iso able increase amount mdr mrna protein caco cells presence acetyl cysteine significantly prevented inductive effect iso mdr mrna level moreover mapk inhibitors including erk mapk inhibitor mapk inhibitor suppressed increase mdr mrna levels cells treated benzophenones xanthone iso respectively findings agreement increase phosphorylated form either erk erk upon treatment cells three compounds addition iso increased mrna jun level conclusion benzophenones xanthone iso likely mdr inducers regulation expression transcription level molecular mechanisms involve oxidative stress mediated activation mapk signaling pathway elsevier gmbh rights reserved
conserved domain nucleotide binding site nbs found several cloned plant disease resistance genes based nbs domain resistance gene analogues rgas isolated full length cdna spr obtained rapid amplification cdna ends race method sequence analysis indicated length spr including complete open reading frame encoding spr protein amino acids compared known nbs lrr genes presented relatively high amino acid sequence identity polypeptide typical structure nontir nbs lrr genes arc lrr domains spr related sequences belonged multicopy gene family sweetpotato genome according result southern blotting semi quantitative pcr analysis showed spr expressed tested tissues cloning putative resistance gene sweetpotato provides basis studying structure function sweetpotato disease resistance relating genes disease resistant genetic breeding sweetpotato gene submitted genbank database accession number
investigate possibility horizontal gene transfer agricultural microorganisms soil microorganisms environment bacillus subtilis producing iturin pgpr recombinant strain pseudomonas fluorescens used model microorganisms soil samples cucumber tomato plants cultivated pots greenhouse six month period investigated pcr real time pcr southern hybridization terminal restriction fragment length polymorphism rflp fingerprinting data southern blotting rflp patterns suggest model bacteria give significant impacts bacteria pots greenhouse cultivation
sezary syndrome carries poor prognosis infections represent frequent cause death patients toll like receptors tlrs family innate immune receptors induce protective immune responses infections sought evaluate ability tlr agonists induce inflammatory cytokine cytokine type interferon ifn production peripheral blood mononuclear cells pbmc untreated patients detected impaired secretion pbmc induced agonists tlr tlr tlr tlr patients partially recovered tlr tlr tlr agonists tnf secretion restored following stimulation tlr tlr agonists ifn gamma scarcely produced upon tlr activation cells albeit tlr enhanced secretion lower levels control group tlr agonist efficiently induced ifn patients although positive regulation observed cytokines direct contrast broad activity among tlr agonists tlr able induce pro inflammatory secretion tlr agonist induced inflammatory cytokines ifn ifn gamma findings reveal dysfunctional cytokine response upon extracellular intracellular tlr activation patients partially restored tlrs agonists
activation akt serine threonine kinase pathway common feature glioblastoma cells downstream factors akt pathway involved cell proliferation apoptosis cellular migration angiogenesis micro rnas mirnas highly conserved small non coding rnas block targeted mrna expression post transcriptional level aim study investigate role akt pathway regulating mirna changes mirna expression profile human glioblastome cells akt small interfering rna transfection examined microarray confirmed northern blotting regulation akt expression sirna decreased activity akt pathway cells interruption akt pathway suppressed expression kappa myc furthermore expression set mirnas also changed akt sirna transfection putative binding sites kappa myc promoters several regulated mirnas indicating transcription factors may also involved regulation mirna expression thus affecting activity akt pathway tumorigenesis provide new components regulatory function akt pathway better understand regulatory network mediated downstream transcription factors understanding regulatory function akt pathway crucial tailored therapy gliomas
aims hypothesis mody wrongly diagnosed type diabetes children aimed find prevalence mody nationwide population based registry childhood diabetes methods using next generation sequencing screened hnfa hnfa hnfb gck ins genes children negative gad autoantibodies antibody positive matched controls selected norwegian childhood diabetes registry children variants classified using clinical diagnostic criteria pathogenicity ranging class neutral class pathogenic results identified rare exonic splice variants cases controls among antibody negative patients genetic variants classes controls stricter classification classes corresponding number controls hnfa showed strongest enrichment class variants among antibody negative patients controls antibody negative carriers variants class similar phenotype carrying variants classes conclusions interpretation first study screening mody antibody negative children nationwide population based registry results suggest prevalence mody antibody negative childhood diabetes may reach one third mody cases recognised clinicians since precise diagnosis important treatment genetic counselling molecular screening antibody negative children considered routine diagnostics
background methylenetetrahydrofolate dehydrogenase mthfd deficiency recently reported cause folate responsive syndrome displaying phenotype includes megaloblastic anemia severe combined immunodeficiency objective describe investigative approach molecular diagnosis evaluation immune dysfunction family mthfd deficiency methods methods used exome sequencing analysis variants genes involved folate metabolic pathway family affected siblings routine laboratory research data analyzed gain depth understanding innate humoral cell mediated immune function folinic acid supplementation results interrogation exome data concordant variants siblings genes involved folate metabolic pathway identified heterozygous mutation exon mthfd gene shared mother view highly suggestive phenotype extended bioinformatics interrogation structural variants mthfd gene manual evaluation exome data sequence depth coverage exons deletion involving exon shared father identified routine laboratory data showed lymphopenia involving subsets poor response vaccines vitro analysis dendritic cell lymphocyte function comparable healthy volunteers treatment folinic acid led immune reconstitution enabling discontinuation prophylactic therapies conclusions exome sequencing demonstrated mthfd deficiency novel cause combined immunodeficiency folinic acid established precision therapy reverse clinical laboratory phenotype primary immunodeficiency american academy allergy asthma immunology
rosacea chronic cutaneous inflammatory disease affects facial skin clinically rosacea categorized papulopustular erythematotelangiectatic ocular phymatous rosacea however phenotypic presentations rosacea heterogeneous although pathophysiology rosacea remains elucidated immunologic alterations neurovascular dysregulation thought important roles initiating strengthening clinical manifestations rosacea article present possible molecular mechanisms rosacea based recent laboratory clinical studies describe genetic predisposition rosacea along associated diseases triggering factors suggested management options detail based underlying molecular biology understanding molecular pathomechanisms rosacea likely aid toward better comprehending complex pathogenesis
cytokine antagonists monoclonal antibodies offer new treatment options refractory asthma also increase complexity effective patients certain asthma subtypes remain clearly defined clinical inflammatory heterogeneity within refractory asthma makes difficult manage disease determine biologic therapy suitable specific patient purpose article provide data driven discussion clarify use biologic therapies patients refractory asthma first discuss epidemiology pathophysiology refractory asthma interpret current evidence biomarkers eosinophilic type high asthma clinicians determine potential treatments patients based knowledge effectiveness specific asthma phenotypes assess clinical data efficacy safety mechanisms action approved pipeline biologic therapies conclude discussing potential phenotyping endotyping refractory asthma biologic therapies play role treating patients refractory asthma american academy allergy asthma immunology
development aripiprazole oral treatment schizophrenia required synthesis suitably labeled drug product use human metabolism pharmacokinetic studies due potential metabolic degradation molecule multi labeled approach utilizing adopted synthesis aripiprazole accomplished separate syntheses dichloro aniline cinnamic acid respectively labeled versions combined basis molar radioactivity giving final product radiochemical purity specific activity copyright john wiley sons ltd
work evaluates first time cyto compatibility silicone polysiloxane bioactive glass composite films produced dip coating stainless steel substrates using osteoblast like cells aim creating corrosion resistant coatings biomedical applications bioactive glass composition used filler conjunction commercial silicones bioactive glass property forming direct bond living bone polysiloxane attractive candidate protective coatings due resistance oxidation corrosion suspensions based polysiloxanes micro sized fillers used dip coating stainless steel substrates room temperature followed curing oxidative atmosphere degrees degrees fourier transform infrared spectroscopy ftir analysis revealed presence groups substrate field emission scanning electron microscopy showed coatings homogeneous obvious cracks pinholes relatively high concentrations polysiloxane cell biology experiments confirmed expressed cell morphology analyzed chosen surfaces pheno typical cells incubation film containing lower amount polysiloxane dense cell layer formed results indicated polysiloxane composite films exhibited good cyto compatibility degrees degrees showed toxicity toward cells suggesting potential composite applications medical implants elsevier ltd techna group rights reserved
flavonoids represent large class secondary metabolites produced plants polyphenolic compounds well known antioxidative abilities antimicrobial phytoalexins responsible flower pigmentation attract pollinators addition properties also specific bacterial regulators governing expression rhizobium genes involved root nodulation firmin bacterial chalcone isomerase chi eubacterium ramulus catalyses first step flavanone degradation pathway ring opening naringenin form naringenin chalcone structural biology enzymology plant chis well documented whereas existence bacterial chis recently elucidated first determination structure bacterial chi provides detailed structural insights key step flavonoid degradation pathway active site could confirmed crystallization substrate naringenin stereochemistry proposed mechanism isomerase reaction verified specific isotope exchange observed nmr experiments supported mutagenesis studies active site shielded flexible lid varying structure could modelled different states catalytic cycle using small angle ray scattering data together crystallographic structures comparison bacterial chi plant enzyme medicago sativa reveals unrelated folds suggesting enzyme activity evolved convergently different ancestor proteins despite lack functional relationship tertiary structure bacterial chi shows similarities ferredoxin like fold chlorite dismutase stress related protein
ischemia reperfusion injury iri occurs transient hypoxia due obstruction blood flow ischemia followed subsequent oxygenation tissues reperfusion skin ischemia reperfusion main contributing factor pathophysiology pressure ulcers cascade events leading inflammatory response well studied spatial temporal responses different subsets immune cells injury well understood existing models using clamping technique skin flank highly invasive unsuitable studying immune responses injury similar non invasive magnet clamping studies skin flank less ideal intravital imaging studies protocol describe robust model non invasive developed mouse ear skin aim visualize real time cellular response immune cells reperfusion via multiphoton intravital imaging ivm
carnac contains amino acids conserved nac domain nac genes including nam ataf ataf cuc members one largest transcription factor families plants carnac member nap group plays important role plant development responses abiotic stresses study carnac transformed hybrid poplar plants populus deltoides euramericana nanlin using agrobacterium tumefaciens pcr analysis confirmed integration introduced dna target genome reverse transcription pcr confirmed transformation southern northern blotting verified transgene copy number gene expression respectively fourteen lines positive transformants transplanted greenhouse verify drought salt tolerances normal conditions transgenic poplar plants shorter wild type drought salt stresses maintained normal rooting stem growth rates wild type plants suppressed stress conditions carnac expression caused increases proline photosynthetic pigment levels antioxidant enzyme activities furthermore expression carnac lowered malondialdehyde concentrations compared wild type control overall results indicated carnac transgene enhanced drought salt tolerance transgenic poplar plants
obligate intracellular apicomplexan parasite eimeria tenella one seven species eimeria infect chickens elicits protective cell mediated immunity challenge infection reason recombinant tenella parasites could utilised effective vaccine vehicle expressing foreign antigens inducing immunity heterologous intracellular microbes stable line tenella expressing foreign genes prerequisite work vivo stable transfection system developed parasite using restriction enzyme mediated integration remi two transgenic populations tenella obtained express yfp yfp constitutively throughout parasite life cycle southern blotting plasmid rescue analyses show introduced exogenous dna integrated random parasite genome although life cycle transgenic populations delayed least output oocysts reduced fold relative parental strain tenella transgenic parasites sufficiently immunogenic protect chickens challenge either transgenic parental parasites results encouraging development transgenic tenella vaccine vector detailed investigation biology genus eimeria australian society parasitology inc published elsevier ltd rights reserved
imagination pushes humanity well beyond natural biological capacities approach evolution molecular biology behaviour thus required explain combined processes technological performances define spiritual conquests formulas whose sole function cultural humanity operates according intentional social modes defined group immediately become conditions evolution choices motor history humanity thus humanity choose path anatomic modernisation distant reflection bipedalism freeing hands leads development abstract thought relationship anatomy awareness allows infinite variations harmonious adaptation nature animals societies europe humanity arrived abrupt bursts result external evolution continuous distant dispersed across asia unceasing audacity humanity combats biological determinism imposing moral rules imperatives balance biology culture reflected rules sharing food biological life coded social sharing systems take ternary values soon include animal behaviours built shelters integrate societies cosmos delimit cultural spaces within natural chaos mastery cognitive mechanisms gives humanity entirely new responsibility able define destiny united disciplines transformed ethical requirements published elsevier masson sas behalf academie des sciences
background vivo adeno associated virus aav delivery adult liver results sustained expression transgene however suggested aav delivery newborn liver may result transient expression present study analysed transgene expression aav delivery therapeutic marker gene newborn rat liver methods recombinant aav vectors carrying either human ugta cdna lacz gene injected intravenously day old gunn wistar rats serum bilirubin level recorded gunn rats beta galactosidase expression monitored immunohistochemistry enzyme activity molecular forms aav genome analysed polymerase chain reaction southern blotting whole liver quantitative polymerase chain reaction macroscopically dissected beta galactosidase clusters results gunn rat complete serum bilirubin normalization occurred aav delivery hyperbilirubinemia resumed thereafter similarly beta galactosidase expression maximum day less beta galactosidase positive cells recorded months cells gathered small clusters aav copy number fold higher positive cell clusters surrounding parenchyma conclusions results obtained present study show vivo aav delivery newborn rats results transient expression hepatocytes expression trangene persistent small clusters cells preliminary data support hypothesis integration viral genome occurs clusters altogether data confirm low efficiency aav vectors gene therapy liver diseases delivered newborn period copyright john wiley sons ltd
context human papillomaviruses hpvs major global health burden playing part diseases ranging genital warts malignancies penile cancer men cervical cancer women objective explore molecular biology epidemiology hpv infection diseases linked current prevention strategies including potential role vaccination evidence acquisition relevant papers reviews guidelines pertaining topics collected purpose review pubmed online guidelines resources including european association urology centers disease control prevention evidence synthesis current knowledge genital hpv men explained summarised conclusions urgent need data incidence persistence hpv different anatomic sites incidence external genital lesions types hpv lesions allow comprehensive understanding natural history hpv infection progression benign malignant disease men help formulate development implementation vaccination programs patient summary review explores molecular biology epidemiology human papillomavirus hpv infection diseases linked current prevention strategies including potential role vaccination urgent need data incidence persistence hpv different anatomic sites incidence external genital lesions types hpv lesions european association urology published elsevier rights reserved
recently renewed interest large scale games several research disciplines diverse application domains smart grid cloud computing financial markets biochemical reaction networks transportation science molecular biology prior works provided rich mathematical foundations equilibrium concepts relatively little terms robustness presence uncertainties paper study mean field games uncertainty states payoffs consider population players individual states driven standard brownian motion disturbance term contribution threefold first establish mean field system robust games second apply methodology production exhaustible resource third show dimension mean field system significantly reduced considering functional first moment mean field process
numerous reports intronic mirnas plants involved regulation unrelated genes target genes antagonistic host genes intronic mirnas animal systems however known synergistic effects article first report similar regulatory effect mirna originating intron plants nmt genes involved caffeine biosynthesis silenced obtain transformants reduced caffeine transcript analysis revealed accumulation transcripts related nmt gene camtl transformants bearing either antisense rnai constructs altered expression assumed relate silencing nmt genes bioinformatics analysis genes involved biosynthesis revealed presence intronic mirna originating intron theobromine synthase gene targeting camtl putative mirna cloned sequenced modified rlm race mapping cleavage site subsequent northern blotting experimentally demonstrated presence activity mirna coffee canephora novel regulatory mechanism previously unreported plants shed light onto evolution multigene families role introns process elsevier rights reserved
cype protein belongs enzymes family plays important role metabolism small molecular organic pollutants study generated cype transgenic plants petunia using agrobacterium rhizogenes pcr analysis confirmed regenerated plants contained cype transgene rolb gene plasmid southern blotting revealed presence multiple copies cype genome transgenic plants fluorescent quantitative pcr revealed exogenous cype gene expression cype transgenic plants various levels whereas like expression detected either gus transgenic plants wild types absorption benzene toluene transgenic plants analyzed quantitative gas chromatography transgenic plants high cype expression showed significant increase absorption capacity environmental benzene toluene compared control gus transgenic wild type plants furthermore plants also presented obvious improved resistance formaldehyde study besides first reveal cype gene enhances plant resistance formaldehyde also furnishes new method reducing pollutants benzene toluene formaldehyde using transgenic flowering horticultural plants
recent advances enzymology transcription chromatin regulation led discovery proteins play prominent role cell differentiation maintenance specialized cell functions knowledge post synthetic dna histone modifications well information rules guide formation multimolecular chromatin bound complexes helped delineate gene regulating pathways describe pathways altered various pathological conditions present review focuses emerging area therapeutic interference chromatin function purpose cancer treatment immunomodulation
use laser microbeams optical tweezers wide field biological applications genomic immunology discussed microperforation used introduce welldefined amount molecules cells genetic engineering optical imaging microwelding two cells induced laser microbeam combines genetic outfit microdissection allows specific regions genomes isolated whole set chromosomes handling cells optical tweezers supports investigation attack immune systems diseased cancerous cells help laser microbeams heart infarction simulated optical tweezers support studies heartbeat finally laser microbeams used induce dna damage living cells studies cancer ageing
investigate microbial quality retail pepper vietnam enumeration detection enterobacteriaceae screening cefotaxime ctx resistant coliforms performed using commercial samples although enterobacteriaceae isolated samples number enterobacteriaceae lower log cfu samples detection enterobacteriaceae international organization standardization methods salmonella spp escherichia coli klebsiella pneumoniae cronobacter sakazakii enterobacter cloacae complex isolated samples respectively screening ctx resistant coliforms pneumoniae sakazakii cloacae complex isolated samples respectively seven pneumoniae seven cloacae complex isolates obtained screening ctx resistant coliforms resistant least one three third generation cephalosporins ctx ceftazidime cefpodoxime moreover one cloacae complex cluster pneumoniae isolates positive extended spectrum beta lactamase genes plasmid mediated ampc lactamase genes additionally two extended spectrum beta lactamase producing pneumoniae isolates one ampc beta lactamase producing cloacae complex cluster isolate positive plasmid mediated quinolone resistance determinants also amino acid alterations quinolone resistance determining regions gyra parc furthermore cloacae complex isolates positive plasmid mediated fosfomycin resistance gene fosa pepper often consumed without heating process possible spread humans foodborne opportunistic nosocomial infection pathogens resistance genes foods prepared seasoned pepper excluded therefore necessary handle pepper using hygienic conditions cultivation harvesting processing steps
continuous need iterative cycles antibiotic discovery development deal selection resistant pathogens emerge therapeutic application antibiotic becomes widespread short golden age antibiotic discovery nature followed subsequent golden half century medicinal chemistry optimization existing molecular scaffolds emphasizes need new antibiotic molecular frameworks bring molecule centered perspective questions new scaffolds come chemogenetic approaches yield useful new antibiotics existing bacterial targets merit contemporary examination
present survivin one cancer specific proteins identified present study aimed investigate antitumor effects novel survivin small interfering rna sirna nanoliposomes targeting survivin human hepatocellular carcinoma mhcc cells xenograft mouse models survivin targeted sirna nanoliposomes prepared transfected mhcc cells mhcc bearing nude mice survivin expression analyzed using reverse transcription quantitative polymerase chain reaction qpcr western blotting cell viability analyzed using mtt assay apoptosis evaluated using hoechst annexin fluorescein isothiocyanate propidium iodide staining tumor growth mhcc bearing mice monitored following treatment tumor samples obtained survivin expression analysis using qpcr western blotting immunohistochemistry staining survivin expression levels significantly regulated nanoliposome mediated survivin sirna delivery associated significant inhibition cell growth increase apoptosis mhcc cells downregulation survivin expression using survivin sirna nanoliposomes inhibited tumor growth mhcc xenograft models without significant treatment associated toxicity therefore cationic nanoliposome based survivin sirna delivery system constructed demonstrated efficient survivin sirna delivery vitro vivo studies results demonstrate survivin downregulation able significantly attenuate cell proliferation induce apoptosis mhcc cells well inhibit tumor cell growth mhcc xenograft models indicating survivin suppression using sirna may contribute inhibition tumor development suppressing cell proliferation promoting apoptosis
intrachromosomal triplications complex chromosomal rearrangements arise meiosis mitosis lead tetrasomic dose affected genomic regions describe female patient harboring intrachromosomal triplication presented genetics clinic dysmorphic features including telecanthus flat facial profile prognathism short stature widely spaced nipples multiple allergy complaints loose bowel movements mild speech delay microarray analysis showed copy number gain region chromosome bands region contains genes seven micrornas none implicated disease resulting increased gene dosage fish analysis using probe targeted middle segment copy number gain yielded pattern indicative tetrasomy via intrachromosomal triplication three signals long arm one homologue chromosome fourth homologue subsequent fish analysis showed middle triplicated fragment positioned inverted orientation relative outer fragments investigate mechanism intrachromosomal triplication occurred snp microarray analysis performed results consistent presence multiple haplotypes tetrasomic region suggest intrachromosomal triplication patient arose one parent meiosis wiley periodicals inc
wall associated protein kinases waks new group receptor like kinases rlk recently identified arabidopsis cdna encoding novel wak isolated rice named oswak oryza sativa wak deduced amino acid sequence oswak showed identity wak arabidopsis oswak ability autophosphorylation also phosphorylate osrfp putative transcription regulator recently identified rice osrfp strongly interacts kinase domain oswak demonstrated oswak functional protein kinase fusion protein oswak gfp found localized cell surface plasmolysis experiments revealed oswak associated cell wall northern blotting analysis showed infection rice blast fungus magnaporthe oryzae significantly induced oswak transcripts accumulation oswak mrna occurred earlier abundant rice leaves infected incompatible race compatible race blast fungus oswak also induced treatment mechanical wounding meja aba results imply oswak novel gene involved plant defense furthermore six transgenic rice lines constitutive expression oswak became resistant compatible race however oswak expression undetectable leaves stems flowers weak roots normal growth conditions provides functional evidence induction oswak novel rlk plays important roles plant disease resistance
esterification lysophospholipids contributes phospholipid synthesis remodeling scavenging acyl coa dependent lysophospholipid acyltransferase activity broad substrate use mediated saccharomyces cerevisiae lptp sought identify lptp active site amino acids besides histidine conserved among homologs repeatedly found required catalysis vitro lptp assays amino acid modifying agents implicated aspartate glutamate lysine active site residues threonine tyrosine ruled aligning primary structures functionally characterized lpt homologs fungi plants animals identified conserved aspartate glutamate lysine threonine tyrosine residues site directed mutagenesis respective codons showed changing abolished activity without abolishing protein expression mechanism lptp analyzed using monounsaturated acyl coa species different double bond positions delta species showed highest catalytic efficiency propose act conjunction nucleophiles attack hydroxyl group lysophospholipids general acid base mechanism sequential mechanism provides precedent members membrane bound acyltransferase family also lptp optimally orients acyl coa substrates angstrom double bond thioester bond
since invention polymerase chain reaction pcr pcr played significant role molecular diagnostics genetic diseases pathogens oncogenes forensic identification past three decades pcr evolved end point pcr real time pcr current version absolute quantitive digital pcr dpcr review first discuss principles key steps dpcr sample dispersion amplification quantification covering commercialized apparatuses devices still lab development highlight advantages disadvantages different technologies based steps discuss emerging biomedical applications dpcr finally provide glimpse existing challenges future perspectives dpcr
horizontal gene transfer hgt pervasive viruses thought key mechanism evolution hand strong selective constraints increasing genome size impediment hgt rapidly purging horizontally transferred sequences thereby potentially hindering evolutionary innovation explore experimentally evolutionary fate viruses simulated hgt events using plant rna virus tobacco etch virus tev separately introducing two functional exogenous sequences genome one events simulates acquisition new function though hgt conserved alkb domain responsible repair alkylation methylation damage many organisms event simulates acquisition sequence duplicates existing function hgt rna silencing suppressor cucumber mosaic virus evolved two viruses tracked maintenance horizontally transferred sequences time final virus populations sequenced genome measured viral fitness found alkb domain rapidly purged tev genome restoring fitness wild type levels conversely gene stably maintained major impact viral fitness moreover found functional tev provides replicative advantage rna silencing suppression domain pro mutated observations suggest potentially interesting role hgt short functional sequences ameliorating evolutionary constraints viruses duplication functions
spinocerebellar ataxia type sca defined presence insertion mutation containing tggaa repeat within intron brain expressed associated nedd bean gene detecting mutation conventionally done southern blotting dna sequencing methods technically demanding easily implemented clinical diagnosis adapted repeat primed pcr pcr develop clinical genetic test sca using pcr process detect tggaa repeat within insertion mutation pentanucleotide pcr subsequent dna fragment analysis demonstrated characteristic ladder peaks periodicity originating tggaa repeat samples sca patients presence tggaa repeat verified dna sequencing peaks observed normal control two non sca patients tggaa repeat absent method valuable genetic diagnosis sca clinical practice journal human genetics doi jhg published online september
time eukaryotic genomes evolved host genes carrying multiple exons separated increasingly larger intronic mostly non protein coding sequences initially little attention paid intronic sequences considered contain regulatory information however advances molecular biology sequencing computational tools uncovered numerous segments within genomic elements contribute regulation gene expression introns differentially removed cell type specific manner produce range alternatively spliced transcripts many span tens hundreds kilobases recent work human fruitfly tissues revealed long introns extensively processed cotranscriptionally stepwise manner two flanking exons spliced together process called recursive splicing often involves non canonical splicing elements positioned deep within introns different mechanisms deployment proposed still existence widespread nature recursive splicing offers new regulatory layer transcript maturation pathway may also implications human disease
report method time resolved longitudinal extraction quantitative measurement intracellular proteins mrna variety cell types cytosolic contents repeatedly sampled cell population cells cell culture substrate incorporating hollow diameter nanostraws within defined sampling region extracted cellular contents analyzed conventional methods including fluorescence enzymatic assays elisa quantitative real time pcr process nondestructive cell viability sampling enabling long term analysis important note measured quantities cell extract found constitute statistically significant representation actual contents within cells mrna sequences analyzed population cardiomyocytes derived human induced pluripotent stemcells hipsc cms accurately quantified platform samples select subpopulation cells within larger culture allowing native cell cell contact communication even vigorous activity cardiomyocyte beating platform applied cell lines primary cells including cho cells hipsc cms human astrocytes derived cortical spheroids tracking cell group cells time method offers avenue understand dynamic cell behavior including processes induced pluripotency differentiation
current treatments acute degenerative chondral osteochondral lesions need improvement types injuries lead disability worsen quality life high percentage patients aim study develop new layered scaffold osteochondral tissue regeneration biomimetic bioinspired approach chondral regeneration scaffold realized organic compound type collagen regeneration subchondral layer bioactive magnesium doped hydroxyapatite crystals precipitated organic component scaffold entire scaffold structure stabilized cross linking agent highly reactive bis epoxyde butanediol diglycidyl ether bddge developed scaffold characterized physico chemical characteristics structure adhesion strength integrated layers investigated time vitro cell culture studies carried examine ability chondral bone scaffold layers separately support adhesion proliferation differentiation human mesenchymal stem cells hmscs chondrocytes osteoblasts respectively moreover vivo study nude mice transplanted osteochondral scaffolds plain engineered undifferentiated hmscs also set week time points results showed chondral bone scaffold layers represented biocompatible scaffolds able sustain hmscs attachment proliferation moreover association scaffold stimuli differentiation medium induced hmscs chondrogenic osteogenic differentiation deposition extracellular matrix ecm ectopic implantation engineered osteochondral scaffolds indicated hmscs able colonize osteochondral scaffold depth scaffold appeared permissive tissue growth penetration ensuring diffusion nutrients oxygen also suggested presence neo angiogenesis process especially weeks moreover vivo results confirmed great potential scaffold tissue engineering able support initial formation new bone chondral tissue confirming importance combined innovative strategies improve available therapeutic strategies chondral osteochondral regeneration elsevier rights reserved
background effectiveness biosecurity methods mitigate transmission porcine epidemic diarrhea virus pedv via farm personnel contaminated fomites poorly understood study undertaken evaluate effectiveness biosecurity procedures directed minimizing transmission via personnel following different biosecurity protocols using controlled experimental setting results pedv rna detected rectal swabs experimentally infected inf sentinel pigs real time reverse transcription polymerase chain reaction rrt pcr virus shedding inf pigs peaked day post infection dpi viral rna levels remained elevated dpi sentinel pigs low biosecurity group became pedv positive first movement study personnel inf group however rectal swabs pigs medium biosecurity high biosecurity groups negative consecutive days movements remained negative days post movement dpm first trial terminated viral rna detected dpm dpm personal protective equipment ppe personnel addition dpm hair face swabs personnel positive however transmission virus detected swabs fomite study personnel negative conclusions results indicate indirect pedv transmission contaminated ppe occurs rapidly within modeled conditions biosecurity procedures changing ppe washing exposed skin areas taking shower recommended pig production systems appear effective option lowering risk pedv transmission groups pigs
signal transducers activators transcription stats final switches activate gene expression patterns lead human malignancy extracellular signal regulated kinases erk activate stat four cardiovascular hormones inhibit erk kinases leading hypothesis may also inhibit stats four cardiac hormones vessel dilator long acting natriuretic peptide lanp kaliuretic peptide atrial natriuretic peptide anp eliminate human cancers growing mice four cardiac hormones effects stats examined human small cell lung cancer human pancreatic adenocarcinoma cells vessel dilator lanp kaliuretic peptide anp maximally decreased stat respectively concentrations human small cell lung cancer cells stat human pancreatic adenocarcinoma cells respectively cardiac hormones except lanp also significantly decreased stat measured western blots cardiac hormones decrease stat either human small cell lung cancer pancreatic adenocarcinoma cells conclude four cardiac hormones significant inhibitors stat stat human small cell lung cancer pancreatic adenocarcinoma cells suggests specificity hormones anticancer mechanism action enzymology human cancer cells
recently human leukocyte antigen hla focus field reproductive immunology tumor progression transplantation inhibitory function ligand inhibitory receptors leukocyte immunoglobulin like receptors lilr lilrb hla expressed distinct mrna isoforms one encodes soluble hla shla protein detectable sandwich elisa therefore shla elisas used noninvasive diagnosis system number shla specific elisas described prior studies showed data obtained conventional elisa system detecting shla body fluids consistent data obtained immunoprecipitation immunoblotting therefore established optimized elisa system described report yields results consistent analysis using system determined shla protein amniotic fluids found shla levels preterm similar weeks clearly higher term weeks data supporting experiments showed elisa system established useful tools detection shla protein body fluids conventional elisa system
background objectivethe exacerbation prone phenotype copd particularly important exacerbations lead poor quality life disease progression previously found copd patients lack siglec myeloid cell protein recognizes bacteria triggers inflammatory responses less prone exacerbation hypothesized variations siglec genes could also influence copd exacerbation frequency investigated association siglec polymorphisms exacerbation prone phenotype copd methodswe examined whether siglec polymorphisms affect frequency copd exacerbation subjects within study population also analysed correlation genotypes severity airflow obstruction emphysema japanese smokers including copd patients association single nucleotide polymorphisms snps copd phenotypes also assessed caucasian population eclipse study effects coding snps csnps siglec protein functions analysed using vitro assays resultsthe allele haplotype siglec associated higher frequency exacerbations extent emphysema copd results replicate eclipse study myeloid cell line expressing siglec variant corresponding haplotype produced tnf one expressing variant corresponding major haplotype conclusionthe siglec haplotype corresponds siglec variant less effective suppressing inflammatory response may risk factor development emphysema haplotype siglec gene associated exacerbation frequency emphysema japanese copd patients eclipse cohort siglec protein encoded haplotype hypomorphic ability suppress myeloid cell inflammatory responses study reinforces connections endogenous lectins copd phenotypes
endoparasitoid wasp meteorus pulchricornis wesmael introduces virus like particles pulchricornis vlp mpvlp venom lepidopteran host larvae upon oviposition wasp associated factors considered help impair host functions including immune defense obtain major protein repertoire mpvlp venom might support successful parasitism constructed conventional cdna library venom gland filament produces sequenced cdna clones arbitrarily regions expressed sequence tags obtained independent cdna clones grouped clusters one hundred five clusters annotated one gene ontology terms blastgo analyses major repertoire pulchricornis venom gland shared constituents venom glands parasitoid wasp species distinct encoded polydnaviruses twenty clusters selected analyses fully sequenced characterized among factors subjected quantitative reverse transcription polymerase chain reaction analyses factors suggested highly adult specific among factors ten tested rna interference targets effective gene silencing observed five factors five factors included two components mpvlp mpvlp deficient two factors prepared knockdown wasps less effective wild type mpvlp terms inhibitory activity host hemocyte spreading estimated vitro
long noncoding rnas lncrnas suggested biomarkers diagnosis prognosis sporadic colorectal cancer study aimed characterize expression profile lncrnas dna mismatch repair proficient pmmr early stage colon cancer microsatellite instability msi status examined multiplex pcr expression lncrna mrna analyzed microarrays differentially expressed lncrnas mrnas determined bioinformatic analyses validated samples non tumor colonic specimens quantitative real time polymerase chain reaction qrt pcr found msi msi comparison five non tumor colonic samples microarray indicated lncrnas mrnas upregulated lncrnas mrnas downregulated four pmmr early stage bioinformatic analyses revealed differentially expressed mrnas involved process cell division angiogenesis apoptotic differentiation pik akt tnf pathways others expression lncrna mrna networks indicated five hot spots significantly high expression degrees quantitative pcr revealed lncrnas significantly upregulated lncrnas downregulated stratification analysis demonstrated lncrnas significantly associated tnm stage distant metastasis population differentially expressed lncrnas significantly associated clinical features patients pmmr may participate tumorigenesis pmmr
background malaria major world health issue continued burden due part difficulties diagnosis illness world health organization recommends confirmatory testing using microscopy based techniques rapid diagnostic tests rdt cases suspected malaria regions plasmodium species indigenous multiple etiologies fever leading misdiagnoses especially populations hiv prevalent children determine frequency malaria infection febrile patients month period regional hospital bamenda cameroon evaluated clinical efficacy flourescence staining technology fast malaria stain paralens advance microscopy system compared conventional bright field microscopy giemsa stain methods peripheral blood samples patients clinical diagnosis suspected malaria evaluated using methods nested pcr assay gold standard compare two methods pcr positivity sensitivity specificity positive predictive value ppv negative predictive value npv determined results four hundred ninety nine samples included final analysis positive via pcr mean ppv respectively mean npv respectively sensitivity groups specificity respectively increased level diagnostic discrepancy observed technicians based upon skill level using seen conclusions frequency malarial infections confirmed via pcr among patients presenting fever symptoms malaria dramatically lower anticipated based upon physicians clinical suspicions correlation technician skill accuracy malaria diagnosis using observed less pronounced using additionally increased specificity improved ppv suggesting relatively low cost approach could useful resource limited environments anecdotally physicians reluctant treat patients symptomatically results known spite negative microscopic diagnosis highlighting need physician education avoid practice overtreatment larger study area known high prevalence planned compare two microscopy methods available rdts
isoquinoline alkaloid berberine possesses many pharmacological activities including antibacterial infection although direct bactericidal effect berberine documented influence antibacterial functions macrophages largely unknown inflammasome activation macrophages important defense bacterial infection aimed investigate influence berberine inflammasome activation murine macrophages results showed berberine significantly increased atp induced inflammasome activation reflected enhanced pyroptosis well increased release caspase mature interleukin beta beta macrophages effects berberine could suppressed amp activated protein kinase ampk inhibitor compound knockdown ampka expression indicating involvement ampk signaling process line increased beta release ability macrophages kill engulfed bacteria also intensified berberine corroborated vivo finding peritoneal live bacterial load decreased berberine treatment moreover berberine administration significantly improved survival bacterial infected mice concomitant increased beta levels elevated neutrophil recruitment peritoneal cavity collectively data suggested berberine could enhance bacterial killing augmenting inflammasome activation macrophages ampk signaling
transgenic animal extensive perspective research application field medicine life science biopharmacy reason scientists explored convenient easy economic practical high performance transgenic methods intratesticular injection method transfer foreign gene sperm avoid inhibitory factor complicated dealing sperm ensuring fertilization embryo development recombinant efficient expression made pires egfp plasmid backbone inserting antimicrobial peptide thanatin sequence constructed mcs region linear vector injected testis bailai hang chicken surgical operation collected transgenic chicken embryos pcr southern blotting results revealed positive transgenic chicken embryos transgenic rate southern blotting results showed foreign gene integrated chicken chromosomes multi inserted repeat sequences
integration research experience classroom important vital experience undergraduates course based undergraduate research experiences cures grown independent instructor lead projects large consortium driven experiences impact importance cures students levels biochemistry focus national science foundation funded think tank state biochemistry cures suggestions moving biochemistry forward well practical guide supplementary material reported international union biochemistry molecular biology
background serum cresyl sulfate pcs associates cardiovascular disease patients chronic kidney disease pcs concentrations determined intestinal uptake cresol human metabolism pcs renal clearance whether intestinal uptake cresol directly associated cardiovascular disease patients renal dysfunction studied date methods performed prospective study patients chronic kidney disease stage nct intestinal uptake cresol steady state conditions estimated urinary excretion pcs primary endpoint time first cardiovascular event cardiac death myocardial infarction ischemia ventricular arrhythmia cardiovascular surgery ischemic stroke symptomatic peripheral arterial disease statistical analysis done using kaplan meier estimates cox proportional hazard analyses results cohort patients median urinary excretion pcs amounted mol iqr median follow months patients reached primary endpoint tertile events log rank higher urinary excretion pcs directly associated cardiovascular events univariate hazard ratio per mol increase multivariate analysis urinary excretion pcs remained predictor cardiovascular events independent egfr hazard ratio conclusions patients chronic kidney disease intestinal uptake cresol associates cardiovascular disease independent renal function intestinal generation absorption cresol may therapeutic targets reduce cardiovascular disease risk patients renal dysfunction
expression profiling mirnas ability reveal essence somatic embryogenesis qrt pcr one commonly used techniques dynamic mirna detection requires optimal reference genes data reliability first report reference gene validation mirna expression normalization lilium lilium pumilum fisch lilium davidii var unicolor study seventeen mirnas together two snrnas one rrna rrna three protein coding genes act gapdh selected reference candidates expression stability validated qrt pcr among eleven developing cultures two lilies four normalization algorithms including genorm bestkeeper normfinder reffinder also used evaluate stability reference candidates lilium pumilum fisch lpu mira optimal reference gene followed lpu mirb least stable reference candidate lilium davidii var unicolor presented greater stability half mirna candidates best reference gene lda mir followed lda mira analysis expression level mir mir used evaluate validity reference genes lilies general mirnas superior common protein coding genes snrnas rrnas reference genes mirna expression normalization lilium suitable reference mirna different two species lilium genus pioneer study using suitable mirnas reference genes lilium constitutes small essential step exploration mirna function lilium thus offering valuable references plants
tumor necrosis factor tnf receptors corresponding cytokine ligands implicated many aspects biology immune functions tnf receptors key roles various stages cell homeostasis many stimulate lymphocyte proliferation cytokine production additionally several tnf cytokines regulate cell differentiation including promoting recently newly described subset four tnf family cytokines identified regulators production cells oxl tla gitrl promote formation also divert itreg bbl seems inhibit production itreg studied ability promote generation regulation production tnf family cytokines repercussions vivo including enhancement anti tumor immunity immunopathology allergic lung ocular inflammation regulating cell production blockade agonism tnf family cytokine receptors may therapeutic strategy autoimmune allergic diseases tumor
report results first investigation human metabolism arsenic containing lipids arsenolipids significant arsenic constituents seafood products two male volunteers ingested canned cod liver arsenic metabolites urine monitored high performance liquid chromatography inductively coupled plasma mass spectrometry period volunteer consumed wet mass cod liver containing total approximately arsenic present arsenolipids volunteer consumed wet mass cod liver present arsenolipids together cod liver oil containing total arsenic structures arsenolipids currently unknown whereas majority non lipid arsenic cod liver identified arsenobetaine excreted unchanged arsenolipids rapidly metabolised water soluble compounds excreted urine peak arsenic concentrations recorded volunteer volunteer end experiment ingested arsenic accounted urine volunteers major arsenolipid metabolite dimethylarsinate dma constituting volunteer volunteer total urinary arsenic remaining arsenolipid derived arsenic constituting volunteer volunteer comprised four novel arsenic containing fatty acids namely oxo dimethylarsenopropanoic acid thio dimethylarsenopropanoic acid oxo dimethylarsenobutanoic acid thio dimethylarsenobutanoic acid unchanged arsenobetaine volunteer volunteer made remaining urinary arsenic together trace quantities mostly unknown arsenicals second experiment volunteer performed pure cod liver oil contains arsenolipids dma four arsenic fatty acids excreted urine study shows arsenolipids cod liver bioavailable quickly biotransformed several water soluble arsenicals structures suggest native arsenolipids contain dimethylarsine oxide moiety
investigation high frequency electron paramagnetic resonance spectroscopy hfepr conjunction innovative rapid freeze quench rfq technology employed study exchange coupled thiyl radical cob alamin system ribonucleotide reductase prokaryote lactobacillus leichmannii size exchange coupling values thiyl radical tensor refined confirming previously determined gerfen distance paramagnets conclusions relevant ribonucleotide reductase catalysis architecture active site presented key part work development unique rfq apparatus preparation millisecond quench time rfq samples packed small sample tubes used pulsed hfepr lack ability heretofore precluded studies technology compatible broad range spectroscopic techniques readily adopted laboratories elsevier inc rights reserved
background newcastle disease avian influenza subtype two important diseases poultry causing severe economic losses global poultry industry vaccination effective way prevent control spread virus ndv virus aiv antigenic differences current circulating strains vaccine strains might account recent outbreaks vaccinated poultry flocks methods developed inactivated bivalent ndv vaccine based current prevalent strains aiv ndv china evaluated efficacy chickens study results results indicated inactivated bivalent vaccine could induce fast antibody response vaccinated chickens hemagglutination inhibition titer sera increased rapidly highest titer observed weeks post vaccination wpv mean titre log ndv log wpv titers still detectable high level log immunized chickens showed signs disease challenge wpv prevalent strains ndv aiv isolated moreover viral shedding completely inhibited vaccinated chickens challenge aiv inhibited least ndv compared controls dpc conclusions findings suggest inactivated ndv vaccine induces fast strong antibody response vaccinated chickens efficacious poultry ndvs aivs
beamline blu located shanghai synchrotron radiation facility ssrf first beamline dedicated biological material small angle ray scattering biosaxs electrons come undulator provide high brilliance blu end stations double flat silicon crystal monochromator used blu tunable monochromatic photon energy ranging kev meet rapidly growing demands crystallographers biochemists structural biologists biosaxs beamline allows manual automatic sample loading unloading pilatus detector dectris employed data collection characterized high dynamic range short readout time highly automated data processing pipeline sasflow integrated blu help biosaxs group european molecular biology laboratory embl hamburg provides user friendly interface data processing blu beamline officially opened users march date feedback users positive number experimental proposals blu increasing description new biosaxs beamline setup characteristics given together examples data obtained
common aspects mechanisms different types autoimmune diseases multiple sclerosis neuromyelitis optica spectrum disorders nmosds autoimmune encephalitis well paraneoplastic inflammatory disorders central nervous system present knowledge depending disease cells well antibodies contribute various aspects pathogenesis possibly events leading breaking tolerance different diseases great similarity far partially understood beside endogenous factors genetics genomics epigenetics malignancy also exogenous factors vitamin sun light exposure smoking gut microbiome viral infections contribute susceptibility diseases differs disorders target molecules immune attack cells target molecules presented major histocompatibility complex mhc molecules mhc bound ligands cells important role amplifying immune response cells capturing antigen surface immunoglobulin presenting cells antibodies secreted plasma cells differentiated cells highly structure specific important effector functions leading functional impairment lesion evolvement target molecules mainly myelin neuron axon derived proteins nmosd mainly aquaporin expressed astrocytes various proteins expressed neurons axons
cereal crops accumulate starch seed endosperm energy reserve adp glucose pyrophosphorylase agpase plays key role regulating starch biosynthesis cereal seeds agpase maize endosperm heterotetramer two small subunits encoded brittle gene two large subunits encoded shrunken gene two genes maize introduced two elite maize inbred lines solely tandem control endosperm specific promoters expression pcr southern blotting real time pcr analysis indicated transgenes integrated genome transgenic plants expressed progeny expression either gene enhanced agpase activity seed weight starch content compared amounts lower plants expression developing seeds expression transgenic maize plants higher cytoplasmic agpase activity grain weight increased wild type starch content increased compared results indicate expression genes transgenic maize plants could improve kernel traits report provides feasible approach increasing starch content seed weight maize
paroxysmal dyskinesias pds group hyperkinetic movement disorders characterised circumscribed episodes disturbed movement superimposed background state abnormality absent loss consciousness episodes last seconds minutes hours beginning end movement disturbance abrupt neurological examination typically normal episodes pds associated broad spectrum clinical presentations encompassing various aetiologies humans three main groups pds distinguished based precipitating events rather phenomenology paroxysmal kinesigenic dyskinesia pkd paroxysmal nonkinesigenic dyskinesia pnkd paroxysmal exertion induced dyskinesia ped recent years expansion spectrum manifestations due identification genes associated humans prrt slca kcnmai dogs bcan pgn precise pathophysiological mechanism underlying clinical manifestations reported mutations remains elucidated progress also made field immunology links gluten hypersensitivity border terriers called canine epileptoid cramping syndrome cecs reported review aims synthesise classification scheme veterinary pds reviewing human systems applying veterinary examples however anticipated genetic advancement greatly aid future stratification therapy pds dogs therefore classification systems viewed works progress modified necessary crown copyright published elsevier ltd rights reserved
though genetic features lactobacillar fructan hydrolases elucidated information enzymology mutational analyses scarce lactobacillus casei iam exhibits extracellular activity degrading inulin partial purification inulin degrading protein spent culture medium several fragments obtained protease digestion based partial amino acid sequences oligonucleotide primers designed structural gene levh determined using gene library constructed coli system levh gene encoded protein designated levh calculated molecular mass kda respectively levh amino acids long predicted four domain structure containing terminal secretion signal amino acids variable domain residues whose function unclear iii catalytic domain residues glycoside hydrolase activity consisting two modules five blade beta propeller module linked beta sandwich module terminal domain residues comprising five nearly perfect repeat sequences residues homologous equivalents hypothetical cell surface proteins followed residues rich ser thr pro gly pentad lpqag lpxtg homologue overproduced coli putative variable catalytic domain region residues exhibited exo inulinase activity deletion analyses demonstrated variable catalytic domain region containing two modules important enzymatic activity presence eight conserved motifs viii suggested catalytic domain comparative analysis among motif viii newly identified beta sandwich module study site directed mutagenesis conserved amino acids motifs revealed crucial inulinase activity moreover mutations motif viii respectively caused significant decrease activity results suggested variable domain beta sandwich module besides beta propeller module important inulin degrading activity levh elsevier rights reserved
aims study focused cloning expression characterization recombinant heparinase rhepii bacteroides stercoris methods results heparinase gene bact stercoris identified southern blotting sequence deposited genbank gene cloned overexpressed escherichia coli rhepii purified using two simple ion exchange column chromatography steps enzymatic properties substrate specificities rhepii assessed kinetic constants calculated heparin like glycosaminoglycans hlgags digested rhepii optimal reaction conditions products analysed sax hplc conclusions heparinase gene long consists amino acids rhepii active mmol sodium phosphate buffer mmol nacl center dot degrees activity stable degrees days storage acharan sulfate best substrate rhepii followed heparan sulfate heparin major degradation products verified highly sulfated disaccharides sax hplc analysis means rhepii prefers iduronic acid glucuronic acid hlgag structure significance impact study study provides easy certain means obtaining large amounts pure rhepii also provides important information regarding tendencies enzyme digested products rhepii digests hlgags different manner heparinases flavobacterium heparinum therefore anticipate rhepii powerful tool studies gags gags lyases
chronic lymphocytic leukemia cll common form leukemia adults western hemisphere tumor specific chromosomal translocations characteristic findings several human malignancies directly lead malignant transformation identified cll using paired end transcriptome sequencing identified recurrent reciprocal rna chimeras involving yippee like ypel serine threonine protein phosphatase beta catalytic subunit pppcb cll two seven index cases harbored reciprocal rna chimeras initial screening using quantitative real time pcr real time pcr ypel pppcb pppcb ypel fusion transcripts detected cll samples paired normal samples benign lymphocytes various unrelated cancers whole genome sequencing southern blotting demonstrated evidence genomic fusion ypel pppcb ypel pppcb chimera introduced mammalian cells expressed truncated pppcb protein demonstrated diminished phosphatase activity pppcb silencing resulted enhanced proliferation colony formation mec jvm cells implying role pathogenesis mature cell leukemia studies uncover potential role recurrent rna chimeras involving phosphatases pathogenesis common form leukemia
submandibular gland smg mice duct portion called granular convoluted tubule gct developed preferentially males puberty sexual dimorphism androgen dependent underlying molecular mechanisms unclear demonstrated expression transcription factor jund regulated association androgen induced differentiation gct cells striated duct cells menin nuclear protein encoded men tumor suppressor gene known bind jund thereby inhibiting activity present study examined expression menin mouse smg use northern blotting western blotting immunohistochemistry immunoreactivity menin higher female male gland localized nuclei intercalated duct cells subpopulation cells contrast gct cells males appeared negative menin levels menin smg increased castration males decreased repeated administration testosterone females castrated males single administration testosterone females many cells newly gained nuclear menin lost cells converted gct cells hrs patterns expression localization menin quite similar jund furthermore coimmunoprecipitation analysis smg homogenates indicated menin binds jund vivo present study suggests jund menin complex plays significant roles androgen dependent differentiation duct system mouse smg
industrialization mammalian cell culture achieved integrating knowledge several applying core concepts chemical engineering cellular molecular biology biochemistry modeling applied biological physical processes gain additional insights processes article covers modeling bioreactor metabolic processes applies bioprocess hydrodynamics bioreactor briefly described additional focus given gas liquid mass transfer biological modeling presented order increasing complexity first steady state models presented followed dynamic models cybernetic models finally bioreactor integrated models closing discussion summarizes challenges implementation model based approaches biopharmaceutical industry american institute chemical engineers aiche
backgroundmass cytometry measures markers per cell appealing platform comprehensive phenotyping cells human tissue tumor biopsies tissue disaggregation fluorescence cytometry protocols pioneered decades ago known whether established protocols effective mass cytometry maintain cancer stromal cell diversity methodstissue preparation techniques systematically compared gliomas melanomas patient derived xenografts small cell lung cancer tonsil tissue control enzymes assessed included dnase hyqtase tryple collagenase col col col col fluorescence mass cytometry used track cell subset abundance following different enzyme combinations treatment times resultsmechanical disaggregation paired enzymatic dissociation col col col col plus dnase produced highest yield viable cells per gram tissue longer dissociation times led increasing cell death disproportionate loss cell subsets key markers establishing cell identity included hla cdc gfap sox nestin vimentin cytokeratin mass fluorescence cytometry identified comparable frequencies cancer cell subsets leukocytes endothelial cells glioma tonsil conclusionsthis investigation establishes standard procedures preparing viable single cell suspensions preserve cellular diversity human tissue microenvironments international clinical cytometry society
background gsh relevant role human metabolism indicator disease risks amperometric sensor glutathione gsh determination described alternative method featuring simple construction procedure short time analysis method developed sensor used determine glutathione low potential using ttf tcnq complex results sensor exhibits linear response range mol applied potential sce sensitivity detection limit mmol mol respectively conclusion sensor tested hemolysed erythrocyte samples gsh determination good correlation results observed sensor spectrophotometric method sensor showed recovery values elsevier rights reserved
metabolic modeling suggest key enzyme activity needs controlled activity enhanced required production metabolite pathway also helps find possible drug targets enzymes inhibited metabolic modeling knowing kinetics enzymes involved pathway mandatory enzymatic reactions involve multi substrates follow ordered sequential ping pong mechanism kinetic parameters involved model obtained fitting experimental data using model based mechanism cleland model used years grouping parameters dissociation constant michaelis menten constant makes strategy meaningful hence cleland model still use although alternate methods king altman method available derivation determinants used derive rate expression sequential ping pong mechanism tedious hence meaningful modification suggested communication deriving enzyme mechanism based thilakavathi biotech lett obtain cleland model easier way
using two step pcr screening consists direct priority based pcr inverse pcr fungal gene deletion mutants selected quickly accurately omits genomic dna extraction southern blotting steps prevents misinterpretations caused pcr failure anticipated facilitate large scale reverse genetic studies fungi elsevier rights reserved
background antiretroviral therapy art improves survival quality life hiv positive individuals effects long term art use eventually manifest complications long term antiretroviral therapy cohort study uganda coltart established investigate metabolic renal complications long term art use among ugandan adults describe coltart study set aims objectives study methods also report preliminary cross sectional study enrolment metabolic renal complications data analysis results methods hiv positive art naive experienced adults years uganda enrolled data demographic dietary medical social economic behaviour obtained biophysical measurements clinical examination undertaken measured fasting glucose lipid profiles renal liver function tests full blood counts immunology virology hiv drug resistance testing plasma samples stored future studies results july october enrolled individuals art experienced months median years iqr art overall aged years females ever tenofovir art regimen protease inhibitor regimen differences renal dysfunction patients tenofovir non tenofovir containing art regimens patients regimens higher total cholesterol lower high density lipoprotein higher low density lipoprotein higher triglycerides high atherogenic index plasma non regimen patients non regimens higher mean diastolic hypertension patients regimens conclusions finding differences renal dysfunction patients tenofovir non tenofovir containing art regimens means tenofovir based first line art safely initiated even settings without routine renal function monitoring however integration cardiovascular risk assessment preventive curative measures cardiovascular disease required coltart cohort good platform investigate complications long term art use uganda
gas chromatography indispensable analytical technique ever since first exciting steps application fatty acid determinations oilseed plant breeding biosynthesis human metabolism present day methods high quality capillary columns allow sensitive reproducible fatty acid analyses well characterization complex mixtures geometric isomers combined chromatographic separations spectroscopic identification ordinary analysis well suited detailed follow changes human tissue fatty acids derived dietary fats providing however steps methodology carefully optimized plasma fatty acids act excellent indicators use substitute fats found dose dependent correlations analysis phospholipid fatty acid composition especially useful recognizing competitive capability essential fatty acids present particular dietary fat clear response observed even level minor fatty acids increased decreased use trans fatty acids indicated changes abundant octadecenoic trans isomers addition expected associations serum lipids plasma fatty acid data also useful monitoring relationships lipid oxidation parameters analysis fatty acids still traditional uses faced new challenges since effects arise even moderate amounts dietary essential fatty acids neglected continuing research aimed requirements prime importance modification fatty acid compositions metabolic engineering offers good possibilities producing new oilseed crops balanced alpha linolenic linoleic acid ratio preferably combined high oleic acid content future particular attention paid proportions polyunsaturated fatty acids pufas diet factors finally determine apparently unique balance tissue fatty acids eicosanoids decisive human health elsevier science rights reserved
alpha linolenic acid unusual fatty acids omega omega series play important role modulation human metabolism presence acids leaves several edible wild plants recently reported study six edible wild species selected order establish fatty acid compositions leaf lipids thus young leaves amaranthus viridis blet chenopodium album goosefoot crithmum maritimum rock samphire plantago major plantain portulaca oleracea purslane verbena officinalis vervain yielded lipids per dry plant material silica gel chromatography yielded plantago major crithmum maritimum neutral lipids plantago major portulaca oleracea glycolipids crithmum maritimum verbena officinalis phospholipids per dry weight gas chromatography showed major fatty acids omega omega fractions high concentrations omega glycolipid fraction mass spectrometric analyses reveal presence unusual fatty acids carotenes found high concentrations ranging chenopodium album portulaca oleracea analyzed plants rich sources essential fatty acids omega omega also carotenes
surveys cote ivoire lethal yellowing cily phytoplasma conducted eight severely cily affected villages grand lahou leaves inflorescences trunk borings collected coconut palms showing cily symptoms symptomless trees total dna extracted samples tested nested polymerase chain reaction rflp sequence analysis rrna ribosomal protein translocation protein seca genes cily phytoplasma detected symptom bearing palms collected surveyed villages plant parts trunk borings recommended suitable plant tissue type sampling results indicate cily phytoplasma may westward spread coconut growing areas grand lahou cily phytoplasma strains infecting coconut palms western region grand lahou exhibited unique single nucleotide polymorphisms sequence compared strains eastern region moreover single nucleotide polymorphisms seca sequence distinguished cily phytoplasma cape paul wilt disease phytoplasma ghana lethal yellowing phytoplasma mozambique
epidemiology respiratory viruses rvs lung transplant recipients ltrs relationship rvs lung function acute rejection opportunistic infections patients well known performed prospective cohort study collecting nasopharyngeal swabs npss asymptomatic ltrs seasonal changes ltrs upper respiratory tract infectious disease urtid lower respiratory tract infectious disease lrtid npss analyzed multiplex polymerase chain reaction overall npss collected patients positivity rate mean follow years interquartile range years approximately half urtids tracheobronchitis cases caused picornavirus whereas pneumonia caused mainly paramyxovirus four nine influenza two nine ltrs lrtid lung function changed significantly nested case control analysis associated rvs hazard ratio pseudomonas aeruginosa associated lrtid cytomegalovirus cmv replication disease associated urtid previous association rvs aspergillus spp colonization infection conclusion documented high incidence infections ltrs lrtid produced significant lung function abnormalities associations observed rvs aeruginosa colonization infection lrtid cmv replication disease urtid large prospective study epidemiology respiratory viruses lung transplant recipients using molecular assays demonstrates high incidence respiratory viral infection association respiratory virus infectious diseases immediate allograft dysfunction development acute rejection opportunistic infection
first revision database covering human phase enzymes isoforms metabolize pesticides related compounds original version included enzymes metabolize chloroacetamide triazine herbicides organophosphorus insecticides revision also includes carbamate nicotinoid pyrethroid insecticides insect repellents wiley periodicals inc
efficient transformation system chinese cabbage cotyledon explants developed using agrobacterium tumefaciens strains lba harbouring plasmid pmog plasmid pbin omega sck respectively various factors affecting transformation efficiency subsequent regeneration identified age seedlings growth conditions status agrobacterium suspension preculture explants cocultivation time ratio agrobacterium explants acetosyringone concentration kanamycin significant influence transformation frequency plant regeneration presences antibacterial peptide gene cowpea trypsin inhibitor gene selected shoots kanamycin medium confirmed pcr southern blotting northern blotting frequency regeneration cotyledons analyzed eight parental lines chinese cabbage five lines suitable obtaining transformed plants among qingmaye qingmaye responsive lines
drosophila larval brain type type neuroblasts nbs undergo series asymmetric divisions give rise distinct progeny lineages intermediate neural progenitors inps exist type lineages study reveal novel function inscuteable insc acts maintain type lineage identity insc type clones mosaic analyses repressible cell marker marcm formation extra deadpan dpn like gmc like cells observed lack insc leads defective localization segregation numb asymmetric cell division end cytokinesis results insufficient numb ganglion mother cells gmcs formation extra deadpan dpn cells insc clones prevented attenuation notch activity suggests insc functions numb notch signaling pathway also show absence insc type lineages cellular identity gmcs altered adopt inp like cell fate indicated initiation dpn expression accompanied transient presence earmuff erm inp like cells capacity divide multiple times conclude insc necessary maintenance type lineage identity genetic manipulations eliminate type nbs overproliferating type nbs larval brain lead altered circadian rhythms defective phototaxis adult flies indicates homeogenesis lineages important adult brain function copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
hydrogen bonds backbone amide groups enzymes substrates often observed importance substrate binding catalysis easy investigate experimentally describe generation kinetic characterization backbone amide ester substitution orotidine monophosphate omp decarboxylase methanobacter thermoautotrophicum mtompdc determine importance backbone amide substrate hydrogen bond mtompdc catalyzed reaction characterized rate enhancement similar among largest enzyme catalyzed reactions reaction proceeds vinyl anion intermediate may stabilized hydrogen bonding interaction backbone amide conserved active site serine residue ser oxygen pyrimidine moiety electrostatic interactions conserved general acidic lysine lys vitro translation conjunction amber suppression using orthogonal amber trna charged glycerate used generate ester backbone substitution fluoro omp fomp substrate amide ester substitution increased value similar fold decreased value cat similar fold conclude hydrogen bond backbone amide ser pyrimidine moiety contributes modest factor similar rate enhancement stabilization anionic intermediate accomplished electrostatic interactions including proximity lys conclusions good agreement predictions obtained hybrid quantum mechanical molecular mechanical calculations
background aim study investigate application mucous membrane keratinocyte cultures amniotic membrane poly lactic acid plla purasorb cover tissue loss oral cavity developments molecular biology techniques tissue engineering allow culturing identification cells anchored wound achieve integrity tissue transplantation tissues obtained patient cells superior allogenous transplantation possibility transfection rejection need long term immunosuppression methods patients procedures keratinocytes cultured amniotic membrane plla transplanted cover antro oral fistulas bone loss osteoradionecrosis results patients outlasting antro oral fistulas defects healed patients cases tissue loss osteoradionecrosis obtained healing wound case histological examination cultures indicated cultured cells formed well differentiated layers similar keratinocytes mucous membranes although seeded amniotic membrane formed single layer cells seeded plla scaffold arranged layers differences shown statistically significant morphometric analysis conclusions autologous transplants epithelium cultured amniotic membrane plla constitute new effective way covering nonhealing tissue loss oral cavity chosen cases using modern methods tissue engineering
melanoma leading cause death among skin cancers incidence continues rise rapidly worldwide past decades available treatment options melanoma remain limited despite extensive clinical research melanoma immunogenic tumor great advances immunology recent decades allow development immunotherapeutic agents melanoma recent years immunotherapy utilizing cytokines particularly successful certain cancers holds promise patients advanced melanoma review overview current status emerging perspectives cytokine immunotherapy melanoma discussed details study helpful unveil mysterious mask cytokine based immunotherapy melanoma elsevier rights reserved
species brassica rapa includes various vegetable crops production vegetable crops usually impaired heat stress micrornas mirnas arabidopsis considered mediate gene silencing plant response abiotic stress however remains unknown whether mirnas play role heat resistance rapa identify genomewide conserved novel mirnas responsive heat stress rapa defined temperature thresholds non heading chinese cabbage rapa ssp chinensis constructed small rna libraries seedlings exposed high temperature degrees deep sequencing data analysis selected series conserved novel mirnas responded heat stress total chinese cabbage shares least conserved mirna families arabidopsis thaliana among five mirna families responsive heat stress northern hybridization real time pcr showed conserved mirnas bra mira bra mirb heat inhibitive guided heat response target gene braccsd bra mirh bra mirg heat induced putative target bracspl regulated according criteria mirna mirna form duplex novel mirnas belonging mirna families predicted four identified heat responsive northern blotting expression analysis putative targets two novel mirnas bra mirb bra mir negatively regulated putative target genes rapid amplification cdna ends pcr indicated three novel mirnas cleaved transcripts target genes precursors may evolved results broaden perspective important role mirna plant responses heat
blue mussels mytilus edulis accumulate biotransform arsenic larger variety arsenicals seafood eight volunteers ingested test meal consisting blue mussel followed identical low controlled diet full urine sampling provide complete speciation individual patterns urinary excretion total tas urinary excretion whereof arsenobetaine dimethylarsinate dma accounted respectively fifteen minor urinary arsenicals quantified inductively coupled plasma mass spectrometry icpms coupled reverse phase anion cation exchange high performance liquid chromatography hplc thio arsenicals non thio minor arsenicals including inorganic ias methylarsonate contributed total sum species excretion respectively large individual differences excretion patterns apparently formation thio arsenicals negatively correlated formation excretion possibly indicating metabolic interrelationship results may toxicological relevance since dma classified possibly carcinogenic six excreted species thio arsenicals recently recognized toxic ias toxicity well known elsevier ltd rights reserved
agrobacterium rhizogenes agrobacterium tumefaciens plant pathogenic bacteria capable transferring dna fragments transfer dna dna bearing functional genes host plant genome naturally occurring mechanism adapted plant biotechnologists develop genetically modified crops today grown world arable land although use result considerable controversy assembling small interfering rnas sirnas sweet potato plants metagenomic analysis sequences homologous dna sequences agrobacterium spp discovered simple quantitative pcr southern blotting genome walking bacterial artificial chromosome library screening sequencing unambiguously demonstrated two different dna regions ibt dna ibt dna present cultivated sweet potato ipomoea batatas lam genome foreign genes expressed detectable levels different tissues sweet potato plant ibt dna found contain four open reading frames orfs homologous tryptophan monooxygenase iaam indole acetamide hydrolase iaah protein prot agrocinopine synthase acs genes agrobacterium spp ibt dna detected cultigens examined close wild relatives ibt dna contained least five orfs significant homology orf orfn rooting locus rol rolc orf orf orfn genes rhizogenes ibt dna detected genotypes included cultivated wild species finding sweet potato naturally transgenic widely traditionally consumed food crop could affect current consumer distrust safety transgenic food crops
objective biomarkers defined anatomical biochemical physiological traits specific certain disorders syndromes objective paper summarise current knowledge biomarkers anxiety disorders obsessive compulsive disorder ocd posttraumatic stress disorder ptsd methods findings biomarker research reviewed task force international experts field consisting members world federation societies biological psychiatry task force biological markers european college neuropsychopharmacology anxiety disorders research network results present article part summarises findings potential biomarkers neurochemistry neurotransmitters serotonin norepinephrine dopamine gaba neuropeptides cholecystokinin neurokinins atrial natriuretic peptide oxytocin hpa axis neurotrophic factors ngf bdnf immunology hypersensitivity neurophysiology eeg heart rate variability neurocognition accompanying paper part focuses neuroimaging genetics conclusions although present none putative biomarkers sufficient specific diagnostic tool abundance high quality research accumulated improve understanding neurobiological causes anxiety disorders ocd ptsd
disease effect crop yields causing significant losses worldwide demand agricultural products increases need pursue development new methods protect crops disease one mechanism plant protection activation plant immune system exogenous application plant activator molecules elicitor properties used activate plant immune system defence inducing molecules represent powerful often environmentally friendly tool fight pathogens show secondary bile acid deoxycholic acid dca induces defence arabidopsis reduces proliferation two bacterial phytopathogens erwinia amylovora pseudomonas syringae tomato describe global defence response triggered new plant activator arabidopsis transcriptional level several induced genes selected analysis quantitative reverse transcription polymerase chain reaction describe kinetics induction show abiotic stress moderate drought nitrogen limitation impede dca induction defence finally investigate role activation defence bile acid salicylic acid biosynthesis gene sid receptor like kinase family genes wak nadph oxidase encoding rbohd gene altogether show dca constitutes promising molecule plant protection induce complementary lines defence callose deposition reactive oxygen species accumulation jasmonic acid salicylic acid signalling pathways
patients monoclonal gammopathy undetermined significance mgus higher risk development concomitant primary cancers multiple myeloma myelodysplastic syndrome mds report case patient initially suffering mgus igg lambda subtype evolved mds deletion severe pancytopenia due pancytopenia received dose reduced treatment lenalidomide dexamethasone achieved ongoing transfusion independency month treatment bone marrow taken months start treatment showed complete cytogenetic response del clone plasma cell infiltration contrast development mgus patients subsequent occurrence mds diagnosis mgus infrequent moreover biological association mds mgus sufficiently understood non treatment related occurrence supports pathogenetic role pre existing alterations stem cells summarize data concomitant mds mgus particular emphasis molecular aspects
diazotrophs one important microbial communities play key role rhizosphere enhance plant growth promotion supplying fixed nitrogen plants aim present study analyze frequency diversity diazotrophs rhizospheres five genotypes aromatic rice oryza sativa cultivars nua kalajeera ketekijoha nua desheri nua chandan kala namak grown ten years old long term aromatic rice rice larr cropping system sub humid tropical condition study observed less frequency active diazotrophs rhizosphere aromatic rice genotypes based polymerase chain reaction pcr based nifh gene amplification dot blot hybridization acetylene reduction assay ara following five isolates nkr rhizosphere aromatic rice reference strain azospirillum brasilence showed nifh amplification positive signal dot blot none isolates showed positive ara test except brasilence basic local alighnment search tool blast homology nifh sequences nkr matched gluconoacetobacter diazotrophicus pseudomonas stutzeri klebsiella klebsiella pneumoniae sinorhizobium meliloti respectively whereas isolates identified bacillus cereus enterobacter lysinibacillus respectively based rdna sequencing per nifh sequences diazotrophs nkr fall alpha gamma proteobacter whereas rdna sequences revealed belonged firmicutes gamma proteobacter multiple sequence alignment nifh gene sequences showed wider variation among diazotrophs however structure nifh protein revealed less diversity among isolates moreover restriction digestion rdna using tetracutters mspl mbol haeiii deciphered unique pattern among small population diazotrophs results finding provided interesting data novel information diazotroph diversity larr cropping system finally present study indicated continuous application high dose inorganic nitrogenous fertilizers nitrogen rate year wet dry seasons respectively limit frequency diversity rhizospheric diazotrophs larr cropping system elsevier rights reserved
interaction deltamethrin human serum albumin hsa condition simulating human blood environment investigated fluorescence vis absorbance circular dichroism spectroscopy shown static quencher hsa binding constants mol degrees thermodynamic parameters delta mol delta mol delta mol obtained thermodynamic equation hydrogen bond vander waals main driving force effect conformation hsa observed three dimensional fluorescence circular dichroism spectra indicating interaction hsa achieved binding tryptophan tyrosine residues hsa study interaction bovine serum albumin bsa researched compared difference exists interactions serum albumins verify supplement residue animals human metabolism toxicology mechanisms different elsevier rights reserved
recent developments single cell transcriptomics opened new opportunities studying dynamic processes immunology high throughput unbiased manner starting mixture cells different stages developmental process unsupervised trajectory inference algorithms aim automatically reconstruct underlying developmental path cells following review break strategies used novel class methods organize components common framework highlighting several practical advantages disadvantages individual methods also give overview new insights methods already provided regarding wiring gene regulation cell differentiation trajectory inference field still infancy propose several future developments ultimately lead global data driven way studying immune cell differentiation
purpose information available receptor ovarian follicles present study attempts demonstrate expression receptor human granulosa cells gcs methods evaluate concentration serum follicular fluid collected serum women undergoing oocyte retrieval also detect expression receptor luteinized gcs cells pooled six times total twenty individual patients follicles concentration determined elisa expression receptor immunocytochemistry reverse transcription polymerase chain reaction results results showed median concentration serum iqr significantly higher iqr moreover found receptor expressed gcs conclusion presence expression receptor gcs suggest important role cytokine ovarian function
background blood parameters haematocrit leucocyte counts indicators immune status health affected complex way exogenous well endogenous factors additionally social context known among potent stressors group living individuals therefore potentially influencing haematological parameters however exceptions potential causal relationship received moderate scientific attention methods free living individually marked population highly social long lived greylag goose anser anser relate variation haematocrit hct heterophils lymphocytes ratio blood leucocyte counts following factors intrinsic sex age raising condition goose hand raised social pair bond status pair bond duration parental experience environmental biologically relevant periods ambient temperature factors blood samples collected repeatedly total focal birds three biologically relevant seasons winter flock mating season summer results found significant relationships haematological parameters social well environmental factors mating season unpaired individuals higher hct compared paired family individuals pattern reversed fall similarly ratio positively related pair bond status seasonally dependent way highest values mating successful pairs higher ratio unsuccessful ones also absolute number leucocytes tended vary depending raising condition seasonally dependent way discussion haematology bears great potential ecological behavioural studies wild vertebrates sum found htc ratio absolute number leucocytes modulated social factors conclude may considered valid indicators individual stress load
many animal toxins may target molecules need controlled certain pathologies therefore toxins led formulation drugs presently used many drugs still development nevertheless collecting sufficient toxins original source might limiting factor studying biological activities thus molecular biology techniques applied order obtain large amounts recombinant toxins escherichia coli however animal toxins difficult express system results insoluble misfolded unstable proteins solve issues toxins fused tags may improve protein expression solubility stability among tags sumo small ubiquitin related modifier shown efficient removed ulp protease however removing sumo labor time consuming process enhance system show construction bicistronic vector allows expression protein fused sumo ulp protease way expression ulp able cleave sumo leave protein interest free ready purification strategy validated expression new phospholipase spider loxosceles gaucho disintegrin bothrops insularis snake recombinant toxins showed good yield preserved biological activities indicating bicistronic vector may viable method produce proteins difficult express
single molecule measurements valuable tool revealing details enzyme mechanisms enabling observation unsynchronized behavior however approach often requires immobilizing enzyme substrate process may alter enzyme behavior apply microfluidic trapping device allow first time prolonged solution phase measurement single enzymes solution individual redox events observed single molecules blue nitrite reductase used extract microscopic kinetic parameters proposed catalytic cycle changes parameters function substrate concentration consistent random sequential substrate binding mechanism
role fruit vegetables human nutrition public health taken account nutritional recommendations fruit vegetables contain abundance phenolic substances terpenoids natural antioxidants associated protection treatment chronic diseases heart disease cancer terpenoids group substances occur nearly every natural food main subclasses discussed beneficial maintain improve health monoterpenes like limonene carvone carveol diterpenes including retinoids tetraterpenes include different carotenoids like alpha beta carotene lutein lycopene zeaxanthine cryptoxanthine discussed health promoting biofunctional significant impact substance either human metabolism well defined appropriate biomarkers must shown based latter point paper reviews literature mono tetraterpenes special focus impact human health answer question biofunctionality special emphasis placed different mode action affect oxidative stress carcinogenesis cardiovascular diseases copyright karger basel
since adrian brown victor henri work simplest enzyme kinetics model contains three rate constants thoroughly explored many directions using michaelis menten equation measured quickly three rate constants derived temperature jump method transient state kinetics methods need complicated techniques equipments previous paper math chem gave method measure rate constants require additional equipment needed measuring propose new one needs additional equipment either method based study inflection points integral curves numerical results show new one much better previous one two aspects near end reaction new one gives accurate estimation quasi steady state reaction also gives good estimations previous one hence method advances estimation accuracy also choices measuring
longan county considered highly endemic area hepatitis virus hbv plasma derived vaccine used newborns area since cross sectional survey conducted evaluate long term effectiveness vaccine total participants born received series plasma derived vaccinations ages months enrolled serological hbv markers detected compared previous survey data overall prevalence hepatitis surface antigen hbsag participants subjects received first dose within hbsag positive subjects received delayed first dose also hbsag positive subjects identified received first dose within whose hbsag anti hbc prevalence increased yearly immunization anti hbspositive rate vaccine effectiveness declined geometric mean concentration antibody anti positive participants miu declined immunization fewer participants anti levels miu data show protective efficacy plasma derived vaccinations declined administration vaccine within birth important reduce risk hbv infection highly endemic area booster dose might necessary anti hbs levels fall miu age years furthermore studies immune memory induced plasma derived vaccine needed
objective work comparatively study tissue tropism associated pathology autochthonous small ruminant lentivirus srlv field strains using experimental infection sheep bone marrow fifteen male srlv free lambs rasa aragonesa breed inoculated strain nervous tissue origin animals strain articular origin animals uninfected culture medium clinical serologic polymerase chain reaction pcr evaluations performed periodically two lambs infected group control animal euthanized days postinfection tissues analyzed gross histopathologic evaluation immunohistochemistry foxp cell markers lung morphometric evaluation tissue proviral quantification pcr infected animals became positive either enzyme linked immunosorbent assay pcr group lambs showing highest serologic values consistently positive pcr reactions group lambs showed representative lung lesions mild histopathologic changes central nervous system cns carpal joints contrarily group lambs demonstrated intense carpal arthritis interstitial pneumonia absence lesions cns proviral copies tissues detected group lambs experimental infection srlv strains indicates strain virulent strain prone induce arthritis whereas strain likely reproduce encephalitis rasa aragonesa lambs host factors well viral factors responsible final clinicopathologic picture srlv infections
helminthic therapy immune mediated diseases gained attention recent years know little helminths modulate human immunity study investigated self infection trichuris trichiura adult man without intestinal disease affected mucosal systemic immunity colonic mucosal biopsies obtained baseline trichiura infection clearance following mebendazole treatment unexpectedly volunteer experienced campylobacter colitis following trichiura clearance served positive infectious control trichuris trichiura colonization induced equally increased expressions helper treg associated cytokines transcription factors measured quantitative polymerase chain reaction observed several indicators modulation systemic immunity trichiura infection plasma eosinophils anti trichuris antibodies rose markedly inoculation phase shift towards dominated cell response expense response observed circulating cells taken together findings corroborate helminths modulate regional systemic human immunity
micrornas mirnas class small noncoding rnas similar length regulate gene expression play fundamental roles multiple biological processes including cell differentiation proliferation apoptosis well disease processes study mirna thus become rapidly emerging field life science detection mirna expression important first step mirna exploration several methodologies including cloning northern blotting real time pcr microrna arrays ish situ hybridization developed applied successfully mirna profiling review discusses main existing microrna detection technologies emphasizing microrna arrays
mycelium bound lipase aspergillus oryzae aol exhibited excellent enantioselectivity kinetic resolution phenylethanol organic solvent various reaction parameters affecting conversion enantioselectivity studied including type acyl donor solvent molar ratio temperature enzyme amount substrate concentration optimum reaction conditions found transesterification vinyl acetate degrees methyl tert butyl ether vinyl acetate molar ratio enzyme concentration optimum reaction conditions conversion could reach enantiomeric excess product phenylethyl acetate substrate concentration enzyme displayed excellent enantioselectivity value strong tolerance high substrate concentration results indicated aol promising biocatalyst kinetic resolution international union biochemistry molecular biology inc
bacterial mannitol phosphate dehydrogenase mtld gene introduced potato solanum tuberosum agrobacterium tumefaciens mediated transformation transgenic plants selected medium containing kanamycin confirmed polymerase chain reaction pcr southern blotting pcr analyses selected transformants accumulated mannitol sugar alcohol found wildtype potato experiments designed testing salt tolerance revealed enhanced nacl tolerance transgenic lines vitro hydroponic culture compared nacl shoot fresh weight wildtype plants reduced nacl hydroponic conditions however condition shoot fresh weight transgenic plants reduced compared nacl treatment improved tolerance transgenic line may attributed induction progressive accumulation mannitol roots shoots plants contrast vitro experiments mannitol content transgenic roots shoots increased nacl decreased slightly nacl respectively overall amount accumulated mannitol transgenic lines small act osmolyte thus might act osmoprotectant however results demonstrated mannitol contribution osmotic adjustment roots shoots finally concluded mtld expression transgenic potato plants significantly increase mannitol accumulation contributes enhanced tolerance nacl stress furthermore although enhanced tolerance resulted mainly osmoprotectant action osmoregulatory effect could ruled
recent years genome wide profiling approaches begun uncover molecular programs drive developmental processes particular technical advances enable genome wide profiling thousands individual cells provided tantalizing prospect cataloging cell type diversity developmental dynamics quantitative comprehensive manner review single cell rna sequencing provided key insights mammalian developmental stem cell biology emphasizing analytical approaches specific studying gene expression single cells
widespread overuse antibiotics aquaculture led emergence antibiotic resistance shrimp pathogens negative impact shrimp gut microbiota presence antimicrobial residues aquaculture products negative consequences human health alternatively probiotics positive effects immunological responses productive performance aquatic animals study three probiotic bacteria bacillus licheniformis mat subtilis mat subtilis subsp subtilis gatb isolated anadara tuberculosa included diets juvenile shrimp litopenaeus vannamei evaluate effects growth survival disease prevalence immune related gene expression shrimp naturally infected wssv ihhnv fed basal diet control diets supplemented four levels bacilli probiotic mix final concentration cfu feed specific growth rate shrimp significantly higher control treatment final growth well survival similar among treated groups prevalence wssv ihhnv infected shrimp reduced treatments respectively compared control mrna expression propo gene higher treatment control lvto gene significantly regulated treatments compared control sod gene regulated treatment compared control contrast mrna expression hsp gene regulated treatments respect control tgase gene remained unaffected level bacillus probiotic mix conclusion bacilli probiotic mix bacillus spp enhanced immune related gene expression wssv ihhnv naturally infected shrimp first report probiotic potential bacteria isolated tuberculosa immune response viral prevalence shrimp litopenaeus vannamei elsevier ltd rights reserved
decades developing hematopoietic cells strictly compartmentalized small population multipotent self renewing hematopoietic stem cells multipotent hematopoietic progenitor cells undergoing commitment myeloid lymphoid fates unipotent precursor cells mature towards peripheral blood immune cells recent studies however provided battery findings explained classical hierarchical model architecture hematopoiesis emerging heterogeneous hematopoietic stem cell populations bone marrow coexist distinct preprogrammed differentiation proliferation behaviors three subsets distinguished among myeloid biased alpha balanced beta lymphoid biased gamma delta hematopoietic stem cells ratio hematopoietic stem cell subsets developmentally regulated foetal liver hematopoietic stem cells adult bone marrow coordinately gives rise hematopoiesis beta gamma delta hematopoietic stem cells found predominantly early life organism whereas hematopoietic stem cells accumulate aged mice humans addition new sophisticated genetic experiments mice identified major role long lived committed progenitor cells downstream hematopoietic stem cells drivers normal adult hematopoiesis revealed post transplantation hematopoiesis differs qualitatively quantitatively normal steady state hematopoiesis findings important implications understanding situ regulation haematopoiesis health disease
background activation rhoa critical event acute lung injury ali role nitration process unresolved results nitration rhoa tyr produced gef like conformational changes stimulate rhoa decreasing gdp binding conclusion identified new mechanism rhoa activation significance preventing rhoa nitration may useful management ali acute lung injury ali characterized increased endothelial hyperpermeability protein nitration involved endothelial barrier dysfunction lps exposed mice however nitrated proteins involved process identified activation small gtpase rhoa critical event barrier disruption associated lps thus study evaluated possible role rhoa nitration process mass spectroscopy identified single nitration site located tyr rhoa tyr located within switch region adjacent nucleotide binding site utilizing structure developed peptide designated nipr nitration inhibitory peptide rhoa shield tyr nitration tat fused nipr attenuated rhoa nitration barrier disruption lps challenged human lung microvascular endothelial cells treatment mice nipr attenuated vessel leakage inflammatory cell infiltration preserved lung function mouse model ali molecular dynamics simulations suggested mechanism tyr nitration stimulates rhoa activity decrease gdp binding protein caused conformational change within region switch mimicking conformational shift observed rhoa bound guanine nucleotide exchange factor stopped flow kinetic analysis used confirm prediction thus identified new mechanism nitration mediated rhoa activation involved lps mediated endothelial barrier dysfunction show potential utility shielding peptides prevent rhoa nitration management ali
transcription factor hepatocyte nuclear factor beta hnf beta ubiquitously overexpressed ovarian clear cell carcinoma ccc potential therapeutic target explore potential approaches block hnf beta transcription identified characterised extensively nuclear localisation signal nls hnf beta interactions nuclear protein import receptor importin alpha pull assays demonstrated dna binding domain hnf beta interacted spectrum importin alpha isoforms deletion constructs tagged egfp confirmed hnf beta kkmrrnr sequence essential nuclear localisation characterised interaction nls importin alpha using complementary biophysical techniques determined angstrom resolution crystal structure hnf beta nls peptide bound importin alpha functional biochemical structural characterisation nuclear localisation signal present hnf beta interaction nuclear import protein importin alpha provide basis development compounds targeting transcription factor hnf beta via nuclear import pathway mrc laboratory molecular biology published elsevier inc
background pim kinase highly homologous serine threonine kinase overexpressed hematological malignancies solid tumors studies conducted define role pim solid tumors especially prostate cancer aim study define role pim development prognosis prostate cancer material methods collected specimens patients prostate cancer well patients benign prostatic hyperplasia realtime polymerase chain reaction used assessment pim expression rna level western blot used quantify pim protein synthesis different cell lines results found pim mrna expression prostate cancer tissue significantly higher benign prostatic hyperplasia tissue accordingly protein level expression pim prostate cancer cell lines also significantly higher control cells addition expression status pim mrna significantly associated pathological parameters pre surgery prostate specific antigen gleason score pathological stage lymphoid metastasis high expression pim also significantly decreased survival rate patients surgery conclusions pim expression important risk factor prostate cancer first team report pim valuable biomarker chinese
reverse genetics techniques powerful tools studying gene functions model diatom phaeodactylum tricornutum rnai mediated knockdown genes still commonly used reverse genetics technique due diploidic life cycle missing reproduction lab cultures many commonly used techniques create knockout instead knockdown lines applicable tricornutum limitations overcome using genome editing approaches like talen transcription activator like effector nucleases crispr cas clustered regularly interspaced short palindromic repeats allowing introduction targeted mutagenesis events techniques recently adapted exemplarily diatoms however concise guidelines exist yet routine utilization tools subsequent characterization mutants therefore adapted cost effective talen generation system previously established mammalian cells use tricornutum allowing assembly talens twoweeks provide protocols choosing talen target site order avoid potentially ineffective target prone talen constructs efficient transformation tricornutum talen constructs utilizing two antibiotics resistance markers effective screening transformants order test system chose blue light dependent transcription factor aureochromea ptaureoa target gene due known phenotype previously characterized tricornutum rnai knockdown strains talen approach appears highly efficient targeted mutation events detected transformants obtained whereas transformants found allelic knockout lines furthermore talen transformed cell lines found genetically homogeneous without need plating greatly facilitates screening process elsevier rights reserved
asthenozoospermia important cause male infertility mutations sperm mitochondrial dna mtdna result either functionless malfunctioning proteins subsequently affecting sperm motility leading asthenozoospermia purpose study investigate sperm mtdna deletion infertile men low sperm motility immotile spermatozoa compared healthy subjects high sperm motility semen samples asthenozoospermic infertiles controls northern iran collected extraction spermatozoa total dna gap polymerase chain reaction gap pcr performed deletion observed patients asthenozoospermia compared controls confidence interval concluded strong association sperm mtdna deletion asthenozoospermia induced infertility population examined large scale mtdna deletions spermatozoa may induce bioenergetic disorders nevertheless validate results broader research may needed
renin initiator rate limiting factor renin angiotensin blood pressure regulation system although renin exclusively produced kidney nonmurine species synthesis secretion active circulatory enzyme confined almost exclusively dense core granules juxtaglomerular cells prorenin processed stored release via regulated pathway despite importance structural organization regulation granules within cells well understood part due difficulty culturing primary cells vitro lack appropriate cell lines streamlined isolation culture primary renin expressing cells suitable high speed high resolution live imaging using percoll gradient based procedure purify cells rengfp transgenic mice fibronectin coated glass coverslips proved optimal adhesion renin expressing cells facilitated live cell imaging plasma membrane primary renin cells using total internal reflection fluorescence microscopy tirfm obtain quantitative data intracellular function stained mixed granule lysosome populations lysotracker red stimulated cells using isoproterenol analysis membrane proximal acidic granular organelle dynamics behavior within renin expressing cells revealed existence two populations granular organelles distinct functional responses following isoproterenol stimulation application high resolution techniques imaging specialized kidney cells provides new opportunities investigating renal cell biology
aims aim study verify suitable use candidate probiotics selected vitro tests importance vivo assays nominate micro organisms probiotics alternative prophylactic treatments salmonella typhimurium infection methods results thirty three lactic acid bacteria lab isolated foal faeces assessed based main desirable functional vitro criteria based results pediococcus pentosaceus strain chosen evaluate putative probiotic features mouse model salmonella infection daily intragastric doses ped pentosaceus days days salmonella challenge cfu salm typhimurium per mouse led significant aggravation mouse health increasing weight loss worsening clinical symptoms anticipating time number deaths salmonella pediococcus pentosaceus modulated cell mediated immune responses regulation gene expression proinflammatory cytokines ifn gamma tnf alpha small intestine conclusion usual criteria used vitro screening large number lab desirable probiotic functional properties however best candidate probiotic strain identified ped pentosaceus aggravated experimental disease mice significance impact study findings emphasize need prophylactic therapeutic effectiveness demonstrated vivo models make precise health claims
purpose review organ donation united states registered deceased organ donors high percentage donations allowed organ transplantation recipients despite increasing numbers transplants performed comparison previous years numbers patients need transplant increase every year higher rate reveals discrepancy demand availability organs remains fundamental problem organ transplantation recent findings development bioengineered organs represents promising approach increase pool organs transplantation technology involves obtaining complex three dimensional scaffolds support cellular activity functional remodeling though tissue recellularization protocols using progenitor cells innovative approach integrates cross thematic approaches specific areas transplant immunology tissue engineering stem cell biology potentially manufacture unlimited source donor organs transplantation summary although bioengineered organs thought escape immune recognition potential immune reactivity toward components studied detail summarize host immune response toward different progenitor cells discuss potential implications using nonself biological scaffolds develop bioengineered organs
energy barriers enzyme catalyzed reactions calculated quantum mechanics molecular mechanics empirical valence bond evb methods excellent agreement activation energies derived experiments supporting applicability transition state theory enzymic reactions wiley periodicals inc comput chem
third stem cell niche meeting supported novo nordisk foundation held year may brought together selected participants different countries hillerod denmark diverse aspects embryonic adult stem cell biology discussed including respective niches ageing disease regeneration many presentations focused emerging technologies including single cell analysis vitro organogenesis direct reprogramming summarize data presented exciting highly enjoyable meeting speakers well kitchen chefs applauded every session
resinous portions aquilaria plants called agarwood used medicines incenses agarwood contains great variety sesquiterpenes study using cultured cells aquilaria crassna showed production sesquiterpenes alpha guaiene alpha humulene delta guaiene induced treatment methyl jasmonate led cloning delta guaiene synthases present study analyses genomic organization southern blotting delta guaiene synthase crassna performed order examine genomic background delta guaiene synthases aquilaria plants genomic cloning sequencing revealed five types sequence putative delta guaiene synthases sharing identity exon regions enzymes belonged class iii tps subfamily seven exons six introns furthermore southern blotting revealed least five copies delta guaiene synthase existed crassna hybridization digested dna crassna sinensis probes made delta guaiene synthase cdna fragment resulted different banding patterns two species may possible identify aquilaria species restriction fragment length polymorphism analyses delta guaiene synthase cdna probes
interleukin beta beta major histocompatibility complex mhc play important role pregnancy expression non classical class mhc antigen classical class mhc antigen induced beta examined northern blotting western blotting immunohistochemistry beta treatment significantly increased expression early mid pregnancy late pregnancy expression significantly increased uteri decreased placenta immunohistochemical studies indicated early pregnancy protein mainly localized luminal glandular uterine epithelium present deciduas basalis outer layer luminal epithelium glandular epithelium mid late pregnancy present maternal blood vessels syncytio trophoblast labyrinthine zone present maternal blood vessels trophoblastic epithelium labyrinthine layers findings show exogenous beta affects expression affect localization corresponding molecules pregnancy
study aimed polish wastewater effluent activated treatment system nitrogen removal packed bed bioreactor pbr nitrogen removal via simultaneous partial nitrification anammox denitrification snad process investigated different hydraulic retention times hrts results show effluent ammonia nitrate nitrogen concentrations approached hrt low total nitrogen removal efficiency decreased average hrts hrt low nitrogen removal efficiency due presence incomplete degradation organic nitrogen shorter hrts analysis using quantitative real time polymerase chain reaction resolves ratio ammonia oxidizing bacteria aob domain eubacteria changed limited range continuous operation meanwhile nitrite oxidizing bacteria nob increased hrt gradually reduced anammox bacteria accounting microbial consortia dominated aob nob hrt sum inorganic form nitrogen typical wastewater plant effluent could efficiently polished via snad process pbr elsevier ltd rights reserved
objectives arrhythmogenic right ventricular cardiomyopathy caused tmem mutation fully penetrant autosomal dominant cause sudden cardiac death prophylactic implantable cardioverter defibrillator therapy significantly reduces mortality returning lethal cardiac rhythms normal qualitative study assessed psychological ramifications implantable cardioverter defibrillator recipients spouses mutation negative siblings design qualitative interview study participants twenty one individuals nine mutation positive eight mutation negative four spouses families completed semi structured interviews results theoretical assumptions data made inductive sub coding accomplished constant comparison method cohesive themes across respondent interviews determined interviewees family history sudden cardiac death appropriate implantable cardioverter defibrillator therapy family members average length time implantable cardioverter defibrillator years major themes included acceptance gratitude grudging acceptance psychological effects emotional psychological well functioning broader family unit relationships practical concerns clothes travel loss driving licence effects implantable cardioverter defibrillator discharge affected family members regardless mutation status conclusions despite survival advantage implantable cardioverter defibrillator therapy intervention carries psychological practical burdens family members kindreds manifesting tmem arvc appear dissipate time move towards integrating psychology services cardiac genetics clinic extended family may provide benefit
malaria transmission plasmodium parasites must develop mosquito vector oxidative stress insect midgut triggered environmental changes temperature influences cellular signaling involved differentiation gametocytes mobile ookinetes purpose parasite survival oxidative stress activates homeostatic response stress characterized phosphorylation eif alpha attenuation protein synthesis transcription genes participating unfolded protein response antioxidant processes forming part integrated stress response isr hypothesized isr operates differentiation gametocytes ookinetes assure plasmodium survival using vitro conditions resembling mosquito midgut conditions cultured plasmodium berghei gametocytes ookinetes evaluated redox balance detecting reactive oxygen species superoxide dismutase activity additionally evaluated phosphorylation eif alpha attenuation global protein synthesis gene expression cellular stress markers endoplasmic reticulum chaperones antioxidant molecules measured reverse transcription quantitative polymerase chain reaction finding processes taking place probably improve survival differentiation plasmodium berghei ookinetes
incorporation non proteinogenic amino acids represents major challenge creation functionalized proteins ribosomal pathway limited proteinogenic amino acids nonribosomal peptide synthetases nrpss able select hundreds different monomers introduced herein fusion protein based design synthetic trna aminoacylation catalysts based combining nrps adenylation domains small eukaryotic trna binding domain arcp using rational design guided structural insights molecular modeling adenylation domain phea fused arcp using flexible linkers achieved trna aminoacylation proteinogenic non proteinogenic amino acids resulting aminoacyl trnas functionally validated catalysts showed broad substrate specificity towards acceptor trna strategy shows functional trna aminoacylation catalysts created bridging ribosomal nonribosomal worlds opens new avenues aminoacylation trnas functional non proteinogenic amino acids
genetics genomics increasingly relevant primary healthcare training unavailable many practitioners education accessed practitioners without cost travel essential gen equip project formed provide effective education genetics primary healthcare europe improve patient care partners include patient representatives specialists genetics primary care six countries report progress challenges involved creating european online educational program genetics
western blotting technique transfer detection proteins named following discovery southern northern blotting dna rna blotting respectively traditionally relied use ray films capture chemiluminescence recent advancements use super cooled charge coupled devices ccd cameras capture chemiluminescence fluorescence images exhibit greater dynamic range compared traditional ray film chemiluminescence detected ccd camera records photons displays image based amount light generated result dynamic chemical reaction fluorescent detection ccd camera hand measured static state despite advantage researchers continue widely use chemiluminescent detection methods due generally poor performance fluorophores visible spectrum infrared imaging systems offer solution dynamic reactions chemiluminescence poor performance fluorophores detected visible spectrum imaging fluorophores infrared spectrum infrared imaging static wide linear range high sensitivity reduced autofluorescence light scatter distinct advantage infrared imaging ability detect two target proteins simultaneously blot increases accuracy quantification comparison minimizing need stripping reprobing compare methodology chemiluminescent uvp biochemi infrared uvp odyssey detection salivary total phosphorylated fetuin multifunctional protein associated cardio metabolic risk discuss advantages disadvantages methodologies
background polygenic risk scores prss successfully summarized genome wide effects genetic variants schizophrenia significant predictive power clinical sample first episode psychosis fep patients estimated ability prss discriminate case control status predict development schizophrenia opposed psychoses methods sample case control subjects genotyped illumina humancore exome beadchip additional control subjects african ancestry genotyped illumina multi ethnic genotyping array calculate prss used results latest psychiatric genomics consortium schizophrenia meta analysis examined association prss case control status schizophrenia versus psychoses european african ancestry fep patients second sample case subjects chronic psychosis results prs good discriminative ability case control status fep european ancestry individuals variance explained lower individuals african ancestry furthermore prs distinguished european ancestry case subjects went acquire schizophrenia diagnosis developed psychotic disorders conclusions prs powerful predictor case control status european sample patients fep even though large proportion established diagnosis schizophrenia time assessment prs significantly different case subjects developed schizophrenia although discriminative accuracy may yet sufficient clinical utility fep
allergic diseases often occur early life persist throughout life life course perspective considered allergen immunotherapy particular essential understand whether treatment may used old age adults current paper developed working group airways integrated care pathways airways diseases model chronic respiratory diseases european innovation partnership active healthy ageing connect sante considered political background rationale allergen immunotherapy across life cycle unmet needs treatment particular preschool children old age adults strategic framework practical approach synergize current initiatives allergen immunotherapy mechanisms concept active healthy ageing
exosomes secreted cell extracellular environment play important role intercellular communication next generation sequencing technology achieved great development recently allows detect complete data gain even deeper analyses rna transcriptomes research extracted exosomes different gastric cancer cell lines immortalized normal gastric mucosal epithelial cell line examined amounts exosomal proteins rnas data showed secreted amount cancer cell derived exosomes contain proteins rnas much higher normal cell derived exosomes moreover next generation sequencing technology confirmed presence small non coding rnas exosomes based publicly available databases classified small non coding rnas according microrna profiles exosomes hsa mir hsa mir two abundant sequences among libraries expression levels two micrornas mir mir exosomes validated reverse transcription polymerase chain reaction reverse transcription polymerase chain reaction result consistent trend sequencing result indicated significant difference exosomes gastric cancer gastric mucosal epithelial cell lines also predicted novel microrna candidates need validated research provided atlas small noncoding rna exosomes may make little contribution understanding exosomal rna composition finding parts differential expression rnas exosomes
organophosphorus ester induced delayed neurotoxicity opidn neurodegenerative disorder characterized ataxia progressing paralysis concomitant central peripheral distal axonapathy diisopropylphosphorofluoridate dfp produces opidn chicken results mild ataxia days severe paralysis disease progresses single dose white leghorn layer hens treated dfp prophylactic treatment atropine normal saline eserine dimethyl sulfoxide control groups treated vehicle propylene glycol atropine normal saline eserine dimethyl sulfoxide hens sacrificed different time points well days tissues cerebrum midbrain cerebellum brainstem spinal cord quickly dissected frozen protein western mrna northern studies subcellular fractionation sds page immunoblotting nuclear supernatant fractions using standard protocols spinal cord cerebrum showed differential expression protein levels pka creb phosphorylated creb creb increase pka level spinal cord nuclear fraction cerebrum nuclear fraction showed decrease remained level change seen either spinal cord cerebrum soluble fraction time points increase creb level spinal cord supernatant days nuclear supernatant fraction cerebrum show alterations time point creb induced spinal cord nuclear fraction day days treatment contrast decreased levels creb days cerebrum nuclear fraction supernatant fraction spinal cord cerebrum show changes pcreb time points studied similarly another set animals treated dfp perfused using standard protocols immunohistochemistry creb brain spinal cord confirmed overall protein expression pattern identified western analysis expression beta tubulin subtypes studied northern blotting showed complex differential pattern immunohistochemistry anti beta tubulin entire period opidn developmental stages showed early induction persistence even disintegrating axonal non neuronal structures cns data thus strongly suggest early cytoskeletal damage molecular level mediated pka creb pathways leads culmination gross microscopically observable level cytoskeletal changes various components central nervous system cns consistent earlier findings thus differential protein expression pka creb creb beta tubulin subtypes appear contribute initiation progression development opidn probably recruiting molecular pathways specific various components nervous system elsevier inc rights reserved
present study first report providing evidence physiological role truncated form mrna cap binding protein eife eukaryotic initiation factor initial observation eife mediates mrna cap function recruiting eiff complex composed eife occurs two forms porcine endometrial tissue strictly temporally restricted fashion ubiquitous prototypical kda form eife found ovariectomized cyclic animals new stable kda variant however predominant early pregnancy time implantation northern blotting cdna sequence analysis vitro protease assays showed kda form belong new class eife proteins represents proteolytically processed variant eife lacking amino acids terminus steroid replacements indicated progesterone combination beta oestradiol induced formation kda eife modified cell free translation systems mimicking situation endometrium revealed besides eife eifg also truncated eifa pabp poly binding protein kda form eife reduced repressive function eife binding protein truncated eifg lacked pabp binding site thus suggest truncated eife provides alternative regulation mechanism altered dynamic eife binding conditions hypophosphorylated together impaired eifg pabp interaction modified translational initiation might particularly regulate protein synthesis conceptus attachment time implantation
micrornas control developmental pathways effector functions immune cells previous studies studied role micrornas natural killer cells however mouse models microrna depletion used nonnk specific partially depleting hampering interpretation data obtained clarify role micrornas murine cells deleted rnase iii enzyme dicer nkp expressing cells observed drastic decrease several micrornas specifically cells furthermore overall size cell pool severely decreased phenotype associated compromised survival moreover performing broad flow cytometry profiling show dicer deficient cells failed complete differentiation program particular several integrins inappropriately expressed mature cells defects coincided decreased response cytokine responsible cell maturation survival addition dicer deletion impaired key cell functions target cell killing production ifn gamma leading defective control metastasis dicer deletion thus affects cell biology cell intrinsic manner several distinct stages
objectives determine effects dental implant surface chemistry energy macrophage activation invitro materials methods disks made two clinically used implant materials titanium titanium zirconium alloy tizr produced two different surface treatments sandblast acid etch sla hydrophilic sla modsla surface roughness energy chemistry characterized primary murine macrophages isolated week old male cbl mice cultured test surfaces sla tizr sla modsla tizr modsla control tissue culture polystyrene mrna quantified quantitative polymerase chain reaction culture pro tnf anti inflammatory protein levels measured elisa days culture results quantitatively microroughness similar surfaces qualitatively nanostructures present modsla surfaces denser tizr modsla surfaces determined hydrophilic high energy surface sla surfaces hydrophobic low energy surface cells high energy surfaces higher levels mrna anti inflammatory markers characteristic activation compared cells low energy surfaces effect enhanced tizr surfaces compared cells sla modsla macrophages cultured tizr sla modsla surfaces released anti inflammatory cytokines conclusions combination high energy altered surface chemistry present tizr modsla able influence macrophages produce greatest anti inflammatory microenvironment reduce extended pro inflammatory factor release
modification expression levels principle apoptosis cell cycle regulatory partners mouse double minute homolog mdm previously reported various types cancer current study expression delta isoforms investigated lung carcinomas respect expression aforementioned genes expression full length transcript delta isoforms alpha beta gamma transcripts mdm transcripts determined reverse transcription quantitative polymerase chain reaction total rna isolated lung carcinoma specimens corresponding adjacent non cancerous tissues rna expression analysis performed according pfaffl equation rest tool using beta actin reference gene detection proteins additionally performed western blotting significant overexpression delta mrnas observed cancerous compared adjacent non cancerous tissues fold whereas full length mdm expression exhibited smaller however significant increase expression transcript significantly reduced cancerous specimens delta expression levels varied parallel however significantly correlated full length protein expression observed western blot analysis strongly varied delta isoforms however mdm protein isoforms detectable protein abundant non cancerous tissues conclusion delta mrna levels suggested potentially useful marker malignancy lung cancer absence delta protein lung carcinomas overexpress delta transcripts may indicate role latter post transcriptional regulation rna interference cell cycle apoptosis
saudi arabian family presented adult onset autosomal dominant progressive external ophthalmoplegia adpeo complicated late onset reversible failure cns respiratory hepatic endocrine systems clinical findings suggestive mitochondrial dysfunction multiple mitochondrial dna deletions demonstrated long range real time polymerase chain reaction assays southern blotting disorder caused novel heterozygous peo mutation predicting leugly substitution twinkle protein peculiar clinical presentation expands variable phenotype observed adpeo twinkle gene mutations elsevier rights reserved
establish non radioactive cell free detection system protein myristoylation metabolic labeling cell free protein synthesis system using bioorthogonal myristic acid analogues performed catalyzed azide alkyne cycloaddition cuaac biotin tag tagged proteins separated sodium dodecyl sulfate polyacrylamide gel electrophoresis sds page blotted polyvinylidene fluoride pvdf membrane protein myristoylation detected enhanced chemiluminescence ecl using horseradish peroxidase hrp conjugated streptavidin results showed metabolic labeling insect cell free protein synthesis system using azide analogue myristic acid followed cuaac alkynyl biotin effective strategy cell free detection protein myristoylation determine whether newly developed detection method applied detection novel myristoylated proteins complementary dna cdna resources four candidate cdna clones selected human cdna resource susceptibility protein myristoylation evaluated using newly developed strategy result products three cdna clones found novel myristoylated protein myristoylation dependent specific intracellular localization observed two novel myristoylated proteins thus metabolic labeling insect cell free protein synthesis system using bioorthogonal azide analogue myristic acid effective strategy identify novel myristoylated proteins cdna resources elsevier inc rights reserved
aim study analyze influence nucleotide transition position mcp gene related susceptibility developing two hundred twenty three consecutive patients according acr eular criteria included healthy subjects used controls mcp polymorphism present patients healthy subjects associations heterozygotes homozygotes respectively argentine patients mcp gene polymorphism confers susceptibility developing
carob pod important fruit food industry production concentrated syrup rich potentially health promoting phenolic compounds sugars moreover one important bioactive components carob pinitol beneficial effects human metabolism optimum conditions extraction pinitol total phenolic compounds tpc cultivated wild types carob pods determined using response surface methodology rsm box behnken design bbd used investigate effects three independent variables extraction temperature degrees dilution rate extraction time response pinitol total phenolic compounds optimum extraction conditions obtained using response optimizer extraction temperature degrees dilution rate extraction time mentioned conditions maximum pinitol tpc concentrations wild carob pod extract respectively
study conducted case control study explore association variant dnmta gene promoter non small cell lung cancer nsclc susceptibility han chinese population genotyping variant performed polymerase chain reaction restriction fragment length polymorphism pcr rflp confirmed sequencing allele associated increased risk nsclc moreover individuals carrying genotypes higher risk develop nsclc genotype carriers stratified analysis showed significantly related age years male smoking drinking vivo detection dnmta mrna levels nsclc tissues vitro luciferase assays consistently showed allele significantly decreased dnmta transcription additional functional analysis revealed increased binding affinity transcription repressor associated allele led significant decreased expression dnmta collectively results propose suppression role dnmta nsclc development emphasize dual roles dnmta tumorigenesis
dementia ever expanding problem facing ageing society currently sharp paucity treatment strategies long known sex hormones namely beta estradiol testosterone possess neuroprotective cognitive enhancing qualities however certain lacunae knowledge underlying molecular mechanisms delayed use treatment strategies dementia recent advancements pharmacology molecular biology especially development safer selective oestrogen receptor modulators recent discovery small molecule brain derived neurotrophic factor receptor agonist dihydroxyflavone exploitation signalling pathways clinical use become possible review aims adumbrate evidence hurdles underscoring use sex hormones treatment dementia well discussing direction required advance translation evidence practise
traumatic brain injury tbi affects ever growing population ages long term consequences health cognition many issues tbi patients face thought mediated immune system primary brain damage occurs time injury exacerbated prolonged months even years chronic inflammatory processes ultimately lead secondary cell death neurodegeneration long lasting neurological impairment researchers turned rodent models tbi order understand inflammatory cells immunological signaling regulate post injury response recovery mechanisms addition development numerous methods manipulate genes involved inflammation recently expanded possibilities investigating immune response tbi models results studies accumulate scientists started link cells signaling pathways pro anti inflammatory processes may contribute beneficial detrimental effects injured brain moreover emerging data suggest targeting aspects immune response may offer promising strategies treat tbi review cover insights gained studies approach tbi research immunological perspective summarize current understanding involvement specific immune cell types cytokines tbi pathogenesis
central carbon metabolism glycolysis pentose phosphate pathway ppp tricarboxylic acid tca cycle plays essential role supply biosynthetic precursors energy central carbon metabolism changes varying growth rates vitro cultivation rapidly proliferating mammalian cells cancer cells continuous cell lines recombinant protein production remains elusive based relationships growth rate activity seven key enzymes six cell clones work reports finding important metabolic characteristic rapidly proliferating glutamine synthetase chinese hamster ovary cells key enzymatic activity involved tca cycle responsible supply energy became elevated growth rate exhibited increases activity key enzymes metabolic pathways glycolysis ppp responsible supply biosynthetic precursors tended decreasesuggesting rapidly proliferating cells still depended predominantly tca cycle rather aerobic glycolysis energetic demands meanwhile growth limiting resource likely biosynthetic substrates rather energy provision addition multifaceted role glucose phosphate isomerase pgi confirmed based significant correlation pgi activity percentage phase cells international union biochemistry molecular biology inc
disciplinary structure research complex problems related human activities supported fundaments social life hard sciences work looked development scientific research field biofuels sustainable source energy searching references regarding scientific roots social relevance scientific communications biofuels published analyzed using combination bibliometric methods text mining techniques field research characterized interdisciplinary marked social relevance bibliometric analysis shows research subject different interacting fields knowledge overlap dominance chemistry engineering agricultural sciences use text mining techniques field configured three groups disciplinary dimensions first influential group includes agricultural sciences social sciences environmental sciences second group gives field technological basis includes chemistry engineering microbiology third group includes disciplines emerging involvement field biofuels biology biochemistry animal plant sciences molecular biology genetics economics material sciences nanosciences nanotechnology geosciences physics humanities multidisciplinary sciences mathematics computer sciences study suggests first group disciplinary dimensions conforms elements socially validate progress research field biofuels study also proposes metric used measure interdisciplinarity social framing research field
recently become apparent possible characterize productively recombined cell receptor tcr gene segments tumor exome files presumably include representations dna cells microenvironment similar characterizations done tcr recombinations tumor specimen rnaseq files exome files used characterize immunoglobulin gene segment recombinations tumors closely related cells immunoglobulin recombinations yet characterized putative microenvironment cells solid tumors report novel scripted algorithm detects productive unproductive immunoglobulin recombinations cell related tumor exome files solid tumor exome files important result relatively high level cell infiltrate breast cancer analysis potential streamlining dramatically augmenting knowledge base regarding cell infiltrates solid tumors leading antibody reagents directed tumor antigens tissue resident infectious pathogens
purpose review review selectin glycoprotein ligand psgl selectin chemokine binding adhesion molecule psgl widely studied neutrophils focus cells psgl recently described major immunomodulatory molecule viral infection psgl also plays crucial role cell homeostasis binding lymphoid chemokines induce tolerance enhancing functions regulatory cells recent findings psgl originally described leukocyte ligand selectin actually ligand selectins selectin binds chemokines activates integrins profoundly affects cell biology shown recently psgl modulate cells viral infection acting negative regulator cell functions absence psgl promotes effector cell differentiation prevents cell exhaustion consistent tumor growth significantly reduced psgl deficient mice enhanced number effector cells together reduced levels inhibitory receptors induce cell exhaustion summary psgl best studied selectin ligand become posterchild versatility leukocyte adhesion inflammation immunology direct involvement psgl cell biology suggests might drug target indeed psgl tested clinical
introduction seldom cutaneous leishmaniasis may present lasting active lesion known non healing form nhcl non functional type helper cells assumed important factor outcome disease present study aims assess molecular defects potentially contribute impairment nhcl methods analysis prospective observational study implemented among five groups first second groups comprise patients afflicted non healing healing forms respectively third group consists recovered participants scars result participants never lived travelled endemic areas leishmaniasis comprise fourth group fifth group comprises participants living hyperendemic areas leishmaniasis although none afflicted aim recruit nhcl cases participants groups leishmanin skin test lst performed assess vivo immunity leishmania infection cytokine profile interleukin interferon ifn motif chemokine ligand cxcl isolated peripheral blood mononuclear cells pbmcs evaluated elisa real time pcr determine motif chemokine receptor cxcr gene expression expression assessed flow cytometry furthermore mutation analysis performed discussion anticipated outcome current study identify mutations lead persistent lesions furthermore expected results reveal association nhcl pro inflammatory cytokines ifn cxcl well cxcr expression ethics dissemination study approved local ethical committee final results disseminated peer reviewed journals scientific conferences
mother immune system adapt pregnancy accepting semi allograft fetus preventing harmful effects developing child aberrations feto maternal immune adaptation may result disease mother liver injury five pregnancy associated liver disorders described far however little known concerning immune alterations promoting respective disease liver disorders pre eclampsia hemolysis elevated liver enzymes low platelet count hellp acute fatty liver hyperemesis gravidarum intrahepatic cholestasis pregnancy hand pre existing autoimmune liver injury mother affected pregnancy review intends summarize current knowledge linking feto maternal immunology liver inflammation special emphasis novel potential biomarkers
artemisinin endoperoxide sesquiterpene lactone isolated aerial parts artemisia annua presently potent anti malarial drug owing low yield artemisinin annua well widespread application artemisinin based combination therapy recommended world health organization global demand artemisinin substantially increasing therefore rendering artemisinin short supply economical way increase artemisinin production increase content artemisinin annua study three key genes artemisinin biosynthesis pathway encoding farnesyl diphosphate synthase amorpha diene oxidase redox partner cytochrome reductase expressed annua agrobacterium mediated transformation transgenic lines confirmed southern blotting expressions genes demonstrated real time pcr assays hplc analysis showed artemisinin contents transgenic lines increased significantly highest one found fold higher control results demonstrate multigene engineering effective way enhance artemisinin content annua
indisulam new anticancer drug unique mechanism action arresting cell cycle transition major excretory pathway indisulam via urine accounting radioactive dose indisulam administered human mass balance study radiochromatographic profiling urine samples resulted detection several radioactive peaks purpose present investigation elucidate chemical structures observed indisulam metabolites collected fractions chromatographic separation urine samples fractions analysed using tandem mass spectrometry propose chemical structure indisulam metabolites urine metabolism indisulam complex consisting oxidative dechlorination hydroxylation hydrolysis acetylation sulphation glucuronidation clinical relevance observed indisulam metabolites needs investigation
present case sarcoma occurring site resected oligodendroglioma without preceding radiotherapy chemotherapy oligosarcoma occurring sites resected oligodendroglioma anaplastic oligodendroglioma sarcomatous components rare although meningioma sarcoma like lesions sometimes reported glioma targeted radiotherapy without preceding radiotherapy quite rare moreover cases sarcoma without oligodendroglial components occurring site resected oligodendroglioma never reported case fluorescent situ hybridization analysis revealed deletion first tumor second tumors additionally immunohistochemistry revealed mutated isocitrate dehydrogenase tumors taken together findings suggest monoclonal tumor origin consequently case may indicate new mechanism development sarcomatous lesions occurring site resected glioma
fmr gene implicated synaptic plasticity thereby learning memory cognition methylation fmr gene necessary memory development age dependent phenomenon aging general reported affect methylation gene however nothing known age dependent variation methylation fmr gene using brain tissues male female mice various age groups sex steroid hormones testosterone beta estradiol modulators restriction enzymes hpa msp southern blotting technique studied methylation upstream sequences fmr gene data reveal methylation upstream sequences include cpg islands promoter untraslated region utr gradually increases due advancing age sexes beta estradiol lowers methylation significantly brain mouse male female mouse age dependent manner testosterone affect appreciably alteration methylation may attributed altered dna methyl transferase dnmt activity age increases young old beta estradiol may regulate dnmt activity age sex groups whereas testosterone may similar effect dnmt regulation methylation fmr cpg island utr beta estradiol might lead derepression fmr gene especially old age finding fmr methylation novel might implications understanding fragile related disorders age dependent alteration ltp ltd
species undifferentiated sex chromosomes emerge key organisms understand astonishing diversity sex determination systems whereas new genomic methods widening opportunities study systems difficulty separately characterize homologous chromosomes poses limitations demonstrate two simple statistics calculated sex linked genotypes namely genetic distance sexes inbreeding coefficient heterogametic sex used reliable proxies compare sex chromosome differentiation populations correlated metrics using published microsatellite data two frog species hyla arborea rana temporaria show intimately relate overall amount differentiation populations however fits individual loci appear highly variable suggesting dense genetic coverage needed inferring fine scale patterns differentiation along sex chromosomes applications statistics implies little sampling requirement significantly facilitate population analyses sex chromosomes
objectives matrix metalloproteinases mmps regulated ets transcription factors facilitate carcinoma cell invasion ets family member ese expressed specifically epithelial tissues association mmps obscure study investigated whether ese regulates invasion oral squamous cell carcinoma scc via transcriptional activity mmp methods hsc used human oral scc lines expression ese mmp detected situ hybridization immunohistochemistry invasion assay gelatin zymography northern blotting used detect invasion activity gelatinolytic activity expression mmp ese transfectants luciferase assays mutation analysis used transcriptional analysis mmp promoter region ese results ese expressed intermediate layer invasive area mmp expressed oral scc tissues ese suppressed invasion activity kda gelatinolytic activity hsc result transfection ese regulates mmp expression negative manner ets binding site mmp promoter contributed suppression ese conclusions findings indicate ese negatively regulates invasion oral scc via transcriptional suppression mmp
medicine agency food drug administration concerning inhalant allergens safety slit overall superior subcutaneous immunotherapy terms systemic adverse events fatality ever reported episodes anaphylaxis described exceptionally looking historical recent trials adverse events local confined site administration reason specific grading system developed world allergy organization classify describe local adverse events increasing amount literature concerning oral desensitization food allergens referred oral immunotherapy also case local side effects predominant although systemic adverse events frequent inhalant allergens review herein description local side effects due slit special focus large trials declared sample size calculation use medical dictionary regulatory activities nomenclature adverse events mentioned context recommended regulatory agencies expected uniform classification grading local adverse events improve harmonize surveillance reporting safety slit american academy allergy asthma immunology allergy clin immunol pract
sweetpotatoes important food crops high starch high carotene content however studies concerning molecular biology crops limited paper selected two varieties sweetpotato zhengshu luoxushu transcriptome analysis novo rna sequencing sweetpotatoes tuberous roots stems leaves field conditions performed using illumina hiseq platform approximately nucleotide bases sequenced following assembly transcripts unigenes identified swissprot pfam kog unigenes functionally annotated using different databases total annotated sequences identified simple sequence repeats ssrs analyses revealed ssr loci unigenes kegg analysis uncovered unigenes involved carotenoid terpe noid backbone biosynthesis pathways respectively among genes differentially expressed unigenes observed zhengshu luoxushu respectively eight differentially expressed unigenes validated qrt pcr thus prepared analyzed transcriptome data two sweetpotato varieties prior genomic information limited new sequence information improve current knowledge important healthy crop provide valuable insight biological research saab published elsevier rights reserved
bacterial extracellular metalloproteases bemps large group metal containing proteases secreted heterotrophic bacteria review diversity structural characteristics mechanisms maturation physiological roles applications bemps described bemps distributed among nine families metalloproteases differences primary sequences structural characteristics bemps identified endoproteases harboring one catalytic active centers bemps usually synthesized inactive zymogens propeptide covalently linked inhibits catalytic domain removal propeptides bemps dependent proteases autocleavage process main physiological function bemps degrade environmental proteins peptides bacterial heterotrophic nutrition extracellular proteases bemps vary greatly enzymology properties adapt respective environments bemps widely used food pharmaceutical industries order broaden application bemps essential explore novel bemps apply gene protein engineering improve production properties promising bemps
correct identification medicinal plant ingredients essential safe use regulation herbal drug supply chain loop mediated isothermal amplification lamp recently developed approach identify herbal medicine species novel molecular biology technique enables timely accurate testing especially settings infrastructures support polymerase chain reaction facilities lacking studies used method altered view extent complexity herbal medicine identification review give introduction lamp analysis covers basic principles important aspects development lamp analysis method presented critical review application lamp based methods detecting identifying raw medicinal plant materials processed products also provide practical standard operating procedure sop utilization lamp protocol herbal authentication consider prospects lamp technology future developments herbal medicine identification challenges associated application
influenza subtype emerged tunisia causing epidemics poultry resulting major economic losses new mutations hemagglutinin neuraminidase proteins acquired suggesting potential directly infect humans effective surveillance tools implemented help prevent potential spillover virus across species developed highly sensitive real time immuno polymerase chain reaction pcr method detecting virus assay applies aptamers ligands capture detect virus first panel specific ssdna aptamers selected via one step high stringency protocol next panel selected aptamers characterized affinities specificity virus aptamer showing highest binding affinity virus used ligand develop highly sensitive sandwich aptamer pcr log increase analytical sensitivity achieved compared routinely used elisa antigen test highlighting potential approach detect low levels virus particles test validated using clinical samples constitutes rapid label free platform opening new venue development aptamer based viability sensing variety microorganisms economic importance tunisia surrounding regions elsevier rights reserved
microglia exist physiological conditions resting state become activated neuronal injury recent studies highlighted reciprocal role neurons controlling number activity microglia study microglia derived newborn rat cortices cultured activated interferon gamma ifn gamma treatment exposed recombinant semaa conditioned medium derived stressed embryonic cortical neurons found activation microglia ifn gamma induced differential upregulation semaphorin receptors plexin neuropilin result confirmed northern blotting reverse transcription pcr western blotting furthermore recombinant semaa induced apoptosis microglia added vitro culture similar result obtained activated microglia semaa produced stressed neurons using vivo model microglia activation striatal injection lipopolysaccharide demonstrated corresponding upregulation plexin neuropilin activated microglia enhanced production semaa stressed adult neurons results suggest novel semaphorin mediated mechanism neuroprotection whereby stressed neurons protect damage activated microglia
natural products often secondary metabolites living organisms wide variety biological activities diversification structures aiming search biologically active small molecules expanding chemical functional spaces major area current interest synthetic chemistry however developing synthetic accessibility efficiency often faces challenges associated structural complexity synthetic biology recently emerged promising accomplish complex molecules contrast application structural diversification natural products relies understanding development utilization compatible biosynthetic machinery review strategies primarily concerning artificial evolution microbial natural products whose biosynthesis features template enzymology including ribosomally synthesized post translationally modified peptides well assembly line resultant polyketides non ribosomal peptides hybrids establishment approaches largely facilitates expansion molecular diversity utility bioengineering different stages levels biosynthetic pathways
accelerator mass spectrometry ams extremely sensitive nuclear physics technique developed mid radiocarbon dating historical artefacts technique centres round use tandem van graaff accelerator generate potential energy permit separation elemental isotopes single atom level ams first used early analysis biological samples containing enriched toxicology cancer research since time biomedical ams used study metabolism xenobiotics animals humans pathways drug metabolism biomarkers metabolism endogenous molecules including vitamins dna protein binding studies clinical diagnosis new drug development concept relies ultrasensitivity ams known human microdosing phase used obtain early human metabolism information candidate drugs arising discovery various aspects ams reviewed article perspective future applications ams provided
background improved diagnostics typhoid needed typhoid controlled human infection model may accelerate development translation evaluated blood culture pcr assay detecting infection controlled human infection typhi compared test performance optimally performed blood cultures methodology principal findings culture pcr amplification blood samples performed alongside daily blood culture participants undergoing typhoid challenge study endpoints typhoid diagnosis fever bacteraemia overall participants reached positive blood culture cultures positive culture pcr assay result five non bacteraemic participants produced culture pcr amplicons indicating infection overall sensitivity specificity assay compared study endpoints found significant difference blood culture culture pcr methods ability identify cases mismatching pairs binomial test clinical stool culture metadata demonstrated additional culture pcr amplification positive individuals likely represented true cases missed blood culture suggesting overall attack rate may rather several participants positive culture pcr results soon ingesting challenge providing new evidence occurrence early primary bacteraemia conclusions significance overall culture pcr assay performed well identifying extra typhoid cases compared routine blood culture alone despite limitations widespread field use benefits increased diagnostic yield reduced blood volume faster turn around time suggest assay could enhance laboratory typhoid diagnostics research applications high incidence settings author published elsevier ltd behalf british infection association
sphingosine phosphate present blood plasma acts pivotal intercellular signal transmitter immune system recruiting lymphocytes thymus secondary lymphoid tissues plasma concentration maintained supply erythrocytes previously showed release erythrocytes mediated atp dependent transporter study attempted establish rapid reliable method measuring transport activity erythrocytes using fluorescent analog nitro benzoxadiazol nbd labeled nbd released erythrocytes time dependent manner nbd release reduced exposure glyburide inhibitor transporter erythrocytes moreover release nbd erythrocytes competitively inhibited intracellular nbd respectively results showed erythrocyte transporter exports nbd optimized sample preparation conditions lipid extraction increase sensitivity assay furthermore successfully measured nbd release without lipid extraction decreasing concentration bsa assay buffer method useful high throughput screening transporter inhibitors using conventional fluorometers
canthon cyanellus roller dung beetle wide distribution range tropical forests new world mexico inhabits pacific gulf coasts yucatan peninsula south mainly state chiapas species shows wide geographical variation cuticle color used defining trait subspecies study analyzed phylogeographic demographic history mexican populations cyanellus using dna sequences nuclear mitochondrial coi genes found current valid subspecies supported molecular analysis populations genetically geographically structured five lineages diversification events gave origin main lineages within species complex occurred pleistocine time range myr demographic history lineages suggests post glacial expansions toward middle end pleistocene combined data mitochondrial nuclear dna suggest phylogeographic structure demographic history cyanellus populations result geological volcanic activity occurred end pliocene pleistocene contraction expansion tropical forests due glacial inter glacial cycles pleistocene landscape changes derived historical events affected demographic history populations species results presented point need review taxonomic status delimitation lineages encompassed canthon cyanellus complex elsevier inc rights reserved
study ray crystal structure complex escherichia coli thioredoxin reductase trxr substrate thioredoxin trx used guide design deinococcus radiodurans trxr trxr mutant altered trx specificity previous studies shown trxrs higher affinity cognate trxs species trxs different species computational alanine scanning mutagenesis visual inspection trxr trx interface suggested four residues account majority trxr trx interface stability individual replacement equivalent residues trxr alanine resulted drastic changes binding affinity confirming four residues account trxr trx interface stability changed match equivalent trxr residues trxr substrate specificity altered trx trx results suggest small subset trxr trx interface residues responsible majority trx binding affinity species specific recognition
transmission canine leishmaniosis canl described three consecutive generations female boxers living non endemic environment czech republic infection first generation female likely occurred breeding visit italy dog died typical clinical signs disease without definitive laboratory diagnosis second third generation offsprings never left czech republic suffered clinical canl confirmed polymerase chain reaction serology apparently infected transplacental transmission persistence canl czech republic years suspected origin endemic region progression infection subsequent generations non endemic country exemplifies disease may establish also areas obvious vectors present published elsevier
investigated human metabolism mercapturic acids acetyl carbamoylethyl cysteine aama acetyl carbamoyl hydroxyethyl cysteine gama derived oxidative genotoxic metabolite glycidamide respectively healthy male volunteer received single dose deuterium labelled acrylamide representing body weight drinking water urine samples dosing within dose analysed aama gama esi first phase increase urinary concentration found last broad plateau aama gama elimination half lives aama gama estimated approximately first phase days second phase total recovery urine sum aama gama hereby well accordance former studies rats days aama accounting altogether total dose major metabolite humans gama accounting appeared minor metabolite humans found urinary ratio gama aama compared previously reported values rats mice therefore metabolic fate humans similar rats mice already demonstrated terms haemoglobin adducts consequently genotoxic potency mediated could supposed comparable rats humans
volvariella volvacea straw mushroom widely cultivated important edible fungus paper used straw mushroom host express exogenous mfc gene encoding multi functional cellulase mfc cloned mollusc ampullaria crossean purpose increase expression mfc new host well improve cellulose degradation increase future yields volvacea mfc enzyme exo beta glucanase endo beta glucanase endo beta xylanase activities crossean mfc gene expressed volvacea control endogenous promoter gpd vvs using expression vector pgvvs mfc constructed ligating gpd vvs promoter mfc gene expression plasmid pgvvs afp containing afp gene encoding anti freeze protein afp cloned spruce budworm selective marker gene transformed protoplasts volvacea along vector pgvvs mfc using polyethylene glycol peg mediated transformation putative transformants volvacea obtained exposing mycelia regeneration medium potato extract dextrose agar mannitol degrees pcr southern blotting used identify positive transformants results indicated mfc gene integrated genome volvacea total cellulose activity based filter paper degradation carboxymethyl cellulase xylanase activities transformants units respectively sodium dodecyl sulphate polyacrylamide gel electrophoresis showed approx kda band equivalent expected size mfc protein crossean thus mfc gene appeared expressed heterologously volvacea
development adenovirus based vaccines samples analyzed order either monitor production process control quality safety product important quality attribute total concentration intact adenoviruses currently determined quantitative polymerase chain reaction qpcr anion exchange hplc capillary electrophoresis evaluated alternative current methods aim one single method allows reliable fast quantification adenovirus particles throughout full process intact adenoviruses samples downstream processing upstream processing analyzed directly detection samples high amounts dna required simple sample pretreatment benzonase adenovirus particles separated matrix components cell debris residual cell dna proteins pva coated capillary using bge consisting tris tricine polysorbate full factorial design experiments used method optimization part analytical quality design aqbd method development approach method validated quantification adenoviruses five representative samples manufacturing process range adenovirus particles per similar pmo method showed intermediate precision rsd concentration accuracy spiked recovery proved highly useful process development support implemented process control testing adenovirus vaccine manufacturing
sea squill drimia maritima extracts used centuries medical treatment heart diseases procedure preparation drimia extracts applied purposes comprising fermentation step described german homoeopathic pharmacopoeia ghp however little known secondary metabolite profile extracts fate components upon processing storage thus present study sea squill extracts monitored fermentation storage hplc dad msn characterize quantitate individual cardiac glycosides phenolic compounds purpose previously established hplc method separation quantitation pharmacologically relevant cardiac glycosides bufadienolides validated within months storage total bufadienolide contents decreased attributed microbial plant enzyme activities metabolization degradation rates individual bufadienolide glycosides significantly differed attributed differing structures aglycones degradation bufadienolide aglycones also observed besides reactions well known human metabolism studies dehydration individual compounds monitored quantitatively predominating flavonoids also metabolised throughout fermentation process present study provides valuable information profile stability individual cardiac glycosides phenolic compounds fermented drimia extracts prepared medical applications expands knowledge cardiac glycoside conversion upon microbial fermentation elsevier rights reserved
aim investigate use droplet digital polymerase chain reaction ddpcr detecting host mrna markers stools non invasive test colorectal cancer screening methods ddpcr quantitative pcr compared side side performance detection itga itgaa transcripts stool samples obtained patients various types colorectal lesions advanced adenomas stage colorectal cancers control patients displaying pathological findings using duplex taqman reactions methods itga itgaa chosen proof concept study based relative medium low abundance stool samples respectively established previous study results found ddpcr qpcr methods performed equally well taqman duplex assay detection itga itgaa transcripts stools patients colorectal lesions itga receiver operating characteristic roc curve analysis showed comparable areas curve prediction advanced adenomas colorectal cancers respectively itgaa detected low levels control patients found significantly elevated times stage colorectal cancers comparison two sets data revealed strong correlation copy numbers obtained ddpcr qpcr itga itgaa conclusion found itga itgaa detection stools patients colorectal cancers ddpcr comparable qpcr using taqman assays
osteoclasts chondroclasts necessary endochondral ossification resorption primary bone calcified cartilage septa respectively bisphosphonates inhibit mineralized tissue resorption various mechanisms according different types drug affect bone remodeling skeletal growth objective present study analyze way alendronate aln etidronate etn affect osteoclastogenesis bone formation endochondral ossification long bones growing rats newborn wistar rats treated daily etn aln sterile saline solution control days femur tibiae epiphyses radiographed analyzed light scanning transmission electron microscopy expression genes related osteogenesis osteoclast differentiation activity analyzed real time quantitative polymerase chain reaction etn group presented reduced body weight disorganized growth plate extended area cartilage ossification zone little bone matrix aln group area altered aln presented latent trap positive cells whereas etn group activated expression kappa opg spp runx ossification zone reduced bisphosphonates rankl expression reduced etn whereas aln decreased expression rank results also indicated addition anti resorptive effect drugs disturbances bone deposition occurred concomitantly reduced expression osteogenesis related genes
background expression host micrornas mirnas changes markedly influenza virus iav infection natural adaptive hosts role genetically determined host susceptibility iav infection explored therefore compared pulmonary mirna expression iav infection two inbred mouse strains differential susceptibility iav infection results mirna expression profiles determined lungs susceptible strain dba less susceptible strain cbl within post infection hpi iav even mirnomes uninfected lungs differed substantially two strains period relative quiescence major mirnome reprogramming detected strains hpi increased hpi distinct groups mirnas regulated iav infection could defined mirnas whose expression correlated hemagglutinin mrna expression represented general response iav infection independent host genetic background mirnas whose expression correlated mrna expression differed two strains remarkably mir mir mir mir mir family whose abundance even uninfected lungs differentiated nearly perfectly area roc curve two strains throughout time course suggesting particularly strong association differential susceptibility two mouse strains expression subsets mirnas correlated significantly peripheral blood granulocyte monocyte numbers particularly dba mice mir mir mir correlated positively cell types mouse strains higher abundance antiapoptotic mir family lower abundance proapoptotic mirnas mir family regulating pik akt pathway mir associated susceptible dba strain conclusion substantial differences pulmonary mirna expression two differentially susceptible mouse strains evident even infection evolved throughout infection could part attributed differences peripheral blood leukocyte populations thus pulmonary mirna expression iav infection part determined genetically contributes susceptibility iav infection murine host likely humans
long time immunofluorescence neglected benefit molecular biology especially genetics transcriptomics proteomics analyses techniques give good results cell culture organs made numerous cells several compartments various states differentiation epidermis immunohistochemistry always relevant double triple staining immunofluorescence allows positive cells identification complex cell structure example pericytes endothelial cells vessels subcellular localizations order due improvement antibodies avoiding especially species cross reactions microscopy specific softwares quality staining acquired images upgraded consequently technique permits molecular biology analyses quantification level expression intensity fluorescence measured cells compartments nuclear cytoplasmic order immunofluorescence cells tissue needs materials gives times qualitative quantitative results must used widely especially mutation associated disease
recombinant consensus interferon cifn therapeutic protein molecular weight kda broad spectrum antiviral activity recombinant human cifn rhcifn previously expressed escherichia coli using isopropyl thiogalactopyranoside iptg non metabolizable expensive compound inducer economical commercial scale recombinant protein production greatly needed increase product yield limited time frame reduce processing cost reduce cost production rhcifn coli induction accomplished using lactose instead iptg lactose induction shake flask experiment resulted higher yield compared iptg finally single step purification deae sepharose pure rhcifn achieved present study attempt made develop low cost process producing quality product high purity methods devised may helpful pilot scale production recombinant proteins low cost international union biochemistry molecular biology inc
understanding global change impacts globally important carbon storage alpine arctic sub arctic soils requires knowledge mechanisms underlying balance plant primary productivity decomposition given nitrogen availability limits processes understanding response soil nitrogen cycle shifts temperature global change factors crucial predicting fate cold biome carbon stores measurements soil enzyme activities different positions nitrogen cycling network important tool purpose review selection studies provide data potential enzyme activities across natural seasonal experimental gradients cold biomes responses enzyme activities increased nitrogen availability temperature diverse seasonal dynamics often larger differences due experimental treatments suggesting enzyme expression regulated combination interacting factors reflecting nutrient supply demand extrapolation potential enzyme activities prediction elemental nitrogen fluxes field conditions remains challenging progress molecular omics approaches may eventually facilitate deeper understanding links soil microbial community structure biogeochemical fluxes meantime accounting effects soil spatial structure situ variations temperature better mapping network enzymatic processes identification rate limiting steps different conditions advance ability predict nitrogen fluxes
magnesium essential constituent human metabolism naturally found bone tissue fracture toughness magnesium greater ceramic biomaterials hydroxyapatite furthermore elastic modulus compressive yield strength magnesium closer natural bone comparison commonly used metallic implants however major obstacle based biomaterials low corrosion resistance study surface magnesium coated poly carpolactone pcl two methods dipping magnesium pcl solution electrospining enhance corrosion resistance magnesium coated dipping polymer solution shows resistance towards corrosion coated electrospining corrosion rate pure magnesium electrospun coated dipping coated magnesium measured electronic quarts crystal nanobalance eqcn found per second respectively second
basic helix loop helix transcription factor math transiently expressed proliferating neural precursors multiple domains developing nervous system also related cell fate decision enteroendocrine goblet paneth cells intestine hand transcription factor cdx normally confined intestinal epithelial cells related differentiation cells therefore investigated relationship math cdx intestinal epithelial cells math cdx expressions normal intestinal mucosa intestinal metaplastic mucosa mouse human stomachs well intestinal crypt derived cell line analyzed immunohistochemistry reverse transcription polymerase chain reaction northern blotting math enhancer element analyzed luciferase reporter assays math positive epithelial cells expressing cdx found normal intestinal mucosa humans mice furthermore math producing epithelial cells showed positive immunostaining cdx also observed intestinal metaplastic mucosa human cdx transgenic mouse stomachs although detected normal gastric mucosa humans mice expression cdx stimulated endogenous math mrna expression intestinal crypt derived cell line iec corroborating observations cdx expressing intestinal metaplastic mucosa furthermore expression cdx iec cells conferred ability express math reporter gene containing math enhancer based results hypothesize cdx involved activating math expression intestinal epithelial cells
purpose evaluate association telomere length age related macular degeneration amd methods circulating leucocyte telomere length proportion telomeres analysed blood dna samples taken patients exudative amd large drusen central geographic atrophy controls consisted age matched subjects without amd amd status assessed masked analysis fundus photographs angiographs telomere length measured southern blotting results mean telomere length amd patients controls corresponding proportions telomeres material correlation telomere length age gender smoking status differences major amd risk single nucleotide polymorphisms snps cfh htra genes expect somewhat longer telomeres controls risk snp differences telomere length patients drusen exudative amd conclusions telomere length associated exudative amd high risk drusen
background relationship toxoplasma gondii infection development bipolar disorder long investigated yet date still poorly understood documented aim review derive summary estimate strength association infection gondii available published studies methods systematic review performed using pubmed lilacs psycinfo embase databases studies included proportion seropositive patients controls examined meta analysis results one hundred eighteen citations initially retrieved thirteen studies included systematic review eight thirteen studies included meta analysis statistical analyses showed gondii infection associated limitations small sample size major limitation among studies carried serological analyses addition available studies enough information disease status severity type bipolar disorder also possible analyze pregnancy status perinatal infection future studies addressing aforementioned topics clearly needed conclusions despite heterogeneous results patients likely infected gondii controls early gondii infection might predispose development gondii infection becoming clinically relevant psychiatric disorders future mechanistic studies required elucidate underlying pathophysiological mechanisms
bacterial populations present rich environments evolved biological mechanisms detoxify methylmercury organometallic mercury compounds common resistance mechanism relies assisted cleavage bond methylmercury organomercurial lyase merb although initial reaction steps lead loss methane methylmercury already studied experimentally computationally reaction steps leading removal merb regeneration active site new round catalysis yet elucidated paper studied final steps reaction catalyzed merb quantum chemical computations combined cbs bpw level theory conceptually simple reaction steps occur complex potential energy surface several distinct pathways accessible may operate concurrently pathway clearly emerges forbidden analysis one arising sequential addition two thiolates metal atom due accumulation negative charges active site addition two thiols contrast leads two feasible mechanistic possibilities straightforward pathway proceeds proton transfer attacking thiol cys leading removal mercury coordination sphere followed slower attack second thiol removes cys pathway involves asp accessory role similar one observed earlier initial stages reaction affords lower activation enthalpy around kcal mol determined solely cysteine removal step rather thiol ligation step addition one thiolate intermediates arising either thiol attack occurs without barrier produces intermediate bound one active site cysteine sch may removed protonation solvent provided thiolate addition active site prior attack thiols leads pathways removal first cysteine becomes rate determining step irrespective whether cys cys leaves first comparisons recently computed mechanism related enzyme mera underline important role asp energetics merb reaction kinetic simulation mechanism derived computations strongly suggests vivo thiolate pathway operative asp assisted pathway well conversion intermediates thiolate pathway intermediates cys assisted pathway prevented steric factors absent model related precise geometry organomercurial binding pocket
society craniofacial genetics developmental biology scgdb aims promote education research communication normal abnormal development tissues organs head membership scgdb broad diverse including clinicians orthodontists scientists academics members sharing interest craniofacial biology year scgdb hosts meeting members share latest research exchange ideas resources build establish new collaborations wiley periodicals inc
isopol international symposium problems listeria listeriosis meetings gather every three years since participants world allow exchange update wide array topics concerning listeria listeriosis ranging epidemiology diagnostic typing methods genomics post genomics fundamental microbiology cell biology pathogenesis xixth isopol meeting took place paris june institut pasteur provide report talks given meeting represents date overview ongoing research important pathogen biological model authors published elsevier masson sas behalf institut pasteur
range reported methods assessed synthesis two coumarin fluorophores containing azides subsequent click modification case reported methods successfully applied resulting azide proved rather unstable appears suited situ generation conversion click triazole case reported methods synthesis precursor ineffective two cases resulted either bromination carbonyl formation multiple unwanted side products isolated use cubr excess hbr acetic acid result isolation could efficiently converted using excess nan thf elsevier ltd rights reserved
introduction hirschsprung disease congenital bowel innervation disorder involves several clinical specialties increasing interest topic reflected number annually published items therefore difficult single scientist survey published items gauge scientific importance value thus tremendous efforts made establish sustainable parameters evaluate scientific work within past decades birth scientometrics materials methods quantify global research activity field scientometric analysis conducted analyzed research output countries individual institutions authors collaborative networks using web science database density equalizing maps network diagrams employed state art visualization techniques results united states leading country terms published items institutions cooperation however although dominance quantity intensive international networks authors institutions linked united states contrast european countries combine highest impact publications analysis reveal influence international cooperation associated phenomena research field conclusion conclude field constantly progressing importance international cooperation scientific community continuously growing
parkinson disease widespread neuronal loss throughout brain pronounced degeneration dopaminergic neurons snc leading bradykinesia rigidity tremor identification living dopaminergic neurons primary ventral mesencephalic cultures using fluorescent marker provides alternative way study selective vulnerability neurons without relying immunostaining fixed cells isolate dissociate culture mouse neurons weeks identify dopaminergic neurons cultures using egfp fluorescence driven tyrosine hydroxylase promoter individual neurons harvested microcentrifuge tubes using glass micropipettes next lyse harvested cells conduct cdna synthesis transposon mediated tagmentation produce single cell rna seq libraries passing quality control check single cell libraries sequenced subsequent analysis carried measure gene expression report transcriptome results individual dopaminergic gabaergic neurons isolated midbrain cultures report live egfp cells harvested sequenced dopaminergic neurons techniques widespread applications neuroscience molecular biology
biocatalysis currently focusing enzymatic multi enzymatic cascade processes instead single steps imbedded chemical pathways alongside scientific revolution review provides overview multi enzymatic cascades responsible biosynthesis terpenes alkaloids polyethers important classes natural products herein illustrate development studies inspired multi chemo enzymatic approaches build core moieties polyethers polypeptide alkaloids piperidines pyrrolidines promoted joint action oxidoreductases hydrolases cyclases transaminases imine reductases elsevier inc rights reserved
cells must respond differently antigens varying affinity presented different doses previous attempts map peptide mhc pmhc affinity onto cell responses produced inconsistent patterns responses preventing formulations canonical models cell signaling systematic analysis cell responses million fold variations pmhc affinity dose produced bell shaped dose response curves different optimal pmhc affinities different pmhc doses using sequential model rejection identification algorithms identified unique minimal model cellular signaling incorporating kinetic proofreading limited signaling coupled incoherent feed forward loop kpl iff reproduces observations show kpl iff model correctly predicts cell response antigen copresentation work offers general approach studying cellular signaling require full details biochemical pathways
mutations genes encoding proteins smooth muscle cell smc contractile apparatus contribute familial aortic aneurysms investigate pathogenicity mutations smc required demonstrate novel method generate smc like cells human dermal fibroblasts transdifferentiation study effect variants genes encoding proteins smc contractile apparatus acta myh patients aortic aneurysms dermal fibroblasts seven healthy donors cells seven patients myh acta variants transdifferentiated smc like cells within week duration using tgf scaffold containing collagen elastin induced smc comparable primary human aortic smc mrna expression smc markers confirmed protein level immunofluorescence quantification analysis western blotting patients myh acta variants effect intronic variants splicing demonstrated mrna level induced smc allowing classification pathogenic nonpathogenic variants conclusion direct conversion human dermal fibroblasts smc like cells highly efficient method investigate pathogenicity variants proteins smc contractile apparatus wiley periodicals inc
immunocompromised patients increased susceptibility vaccine preventable infections thus vaccination critical issue population vaccines usually classified live versus inactivated subunit nonviable vaccines general inactivated vaccines safe immunocompromised patients given per routine schedule except unlikely benefit severe antibody deficiency combined immunodeficient patients patients receiving immunosuppressive therapy immunoglobulin replacement however viable vaccines usually carry risk causing disease especially severely immunocompromised patients therefore much greater caution must exercised use viable vaccines administration individualized basis estimated risk infections vaccinated versus potential adverse effects vaccine review make clear recommendations basis available evidence regarding routine specialized vaccines viable nonviable degree immune compromise categories immunodeficiency disorders american academy allergy asthma immunology
date american joint committee cancer ajcc union international cancer control uicc tumor nodes metastasis tnm classification represents standard system evaluation prognosis solid tumors however clinical outcome significantly different patients tnm stage therefore many efforts made aiming define new prognostic parameters indeed analyses conducted large cohorts colorectal cancer patients emphasized prognostic value tumor infiltrating lymphocytes leading development prognostic score referred immunoscore commentary recapitulate study gabrielson colleagues recently published cancer immunology research addressing role intratumoral cells well prognostic markers hepatocellular carcinoma authors demonstrate immunoscore represents valuable prognostic marker patients hepatocellular carcinoma undergone primary tumor resection supporting application tumor setting colorectal cancer
creatine methyl guanidine acetic acid recommended application food dietary supplement supposed human organism uses formation phosphate necessary source energy muscular work fate supplemented simple molecule decomposed reused recipient individually short term study observed changes metabolism two carbon units thiolic substances hours supplementation level thiodiglycolic acid tdga urine increased rapidly decreased original level time values urine increased units level tdga urine marker disturbance metabolic pathways units thiolic compounds long term study quantitative evaluation parameters potential metabolic products revealed biochemical pathways affected application included intrinsic participation vitamin folates levels two vitamins changed mutually reverse way men study divided different groups according changes levels found urine levels folates vitamin determined blood administration probands group utilized donor units derived different metabolic pathways differences initial terminal tdga levels indicated disturbed equilibria redox processes catalyzed folates vitamin levels homocysteine increased one probands amount creatinine excreted urine depended extent metabolic disturbances observed changes indicated exogenous application affected metabolic pathways connected endogenous synthesis well decomposition
background context limited research investigating educational attainment risk factor low back pain lbp influence gender commonly neglected furthermore genetics early shared environment explain substantial proportion lbp cases need controlled investigating risk factors lbp purpose investigate whether educational attainment affects prevalence risk lbp differently men women controlling influence genetics early shared environment study design cross sectional prospective twin case control study patient sample adult monozygotic dizygotic twins murcia twin registry available data educational attainment formed base sample study prevalence analysis considered twins available data lbp longitudinal analysis considered twins free lbp baseline available data lbp follow outcome measures data lifetime prevalence activity limiting lbp outcome educational attainment risk factor self reported methods prevalence analysis investigated cross sectional association educational attainment lbp whereas longitudinal analysis investigated whether educational attainment increased risk developing lbp analyses performed following sequence first total sample analysis performed twins considering individuals adjusting confounding variables selected data second control influence genetics early shared environment within pair case control analysis stratified zygosity performed complete twin pairs discordant lbp one twin lbp whereas twin analyses stratified gender possible interaction term determining whether gender significant moderator association educational attainment lbp results women either general secondary university education less likely experience prevalence analysis develop lbp longitudinal analysis educational attainment affect risk lbp men controlling effects genetics early shared environment relationship educational status lbp women longer statistically significant conclusions educational attainment affects lbp differently men women higher levels education decreasing risk developing lbp women adjusting genetics early shared environment relationship educational attainment lbp women disappears suggests genetics early shared environment confounding relationship educational attainment lbp women elsevier inc rights reserved
label free method dna sequencing based principle millikan oil drop experiment developed sequencing synthesis approach sensed increases bead charge nucleotides added polymerase dna templates attached beads balance electrical force dependent number nucleotide charges bead opposing hydrodynamic drag restoring tether forces resulted bead velocity function number nucleotides attached bead velocity beads tethered via polymer microfluidic channel subjected oscillating electric field measured using dark field microscopy used determine many nucleotides incorporated sequencing synthesis cycle increases bead velocity approximately reliably detected dna polymerization allowing sequencing short dna templates method could lead low cost high throughput sequencing platform could enable routine sequencing medical applications elsevier inc rights reserved
rhoa member rho gtpases family known play important role remodeling actin cytoskeleton development peripheral nervous system pns schwann cells undergo proliferation migration radial sorting finally wrap related axons compactly form myelin sheath processes involve actin cytoskeletal remodeling however role rhoa schwann cell development still unclear address question first used lentiviral vector mediated short hairpin rna targeting rhoa knock expression rhoa cultured schwann cells vitro effects rhoa schwann cell proliferation migration examined brdu assay transwell assay respectively results present study indicated downregulated rhoa expression cultured schwann cells significantly slacked cells capabilities migration proliferation investigated role rhoa developing rat sciatic nerves immunohistology western blotting showed rhoa mainly expressed schwann cells sciatic nerves peaked weeks postnatal kept low level weeks subjected rats whose sciatic nerves microinjected lentiviral vectors postnatal days found lentiviruses mainly transfected schwann cells rhoa expression transfected schwann cells significantly knocked four weeks lentivirus microinjection immunohistology transmission electron microscopy illustrated rhoa knockdown resulted hypomyelination significant decrease thickness myelin transfected area overall data current study suggested rhoa plays critical role schwann cell biology essential myelination developing peripheral nerve
background product inhibition reduce catalytic performance enzymes used biofuel production different mechanisms cause inhibition cases use classical enzymology approach sufficient overcome problem used semi rational protein fusion strategy create product stimulated enzyme results semi rational protein fusion strategy used create protein fusion library bacillus subtilis xylanase xyna inserted surface positions escherichia coli xylose binding protein xbp two xyna insertions xbp positions xbp xyn xbp xbp xyn xbp showed increased xylanolytic activity presence xylose conditions native xyna inhibited random linkers gly ala residues inserted xyna termini xbp xbp chimeras isolated showing twofold increased xylanolytic activity presence xylose cat values respectively compared native xyna xylose affinity xbp unchanged chimeras showing similar fold stimulation catalytic efficiency xylose result allosteric coupling xbp xyna domains molecular dynamics simulations chimeras suggested conformation alterations xyna xylose binding xbp resulted exposure catalytic cavity increased mobility catalytic site residues compared native xyna conclusions results first report engineered glycosyl hydrolase showing allosteric product stimulation suggest strategy may widely employed overcome enzyme product inhibition improve catalytic performance
critical process apoptosis permeabilization mitochondrial outer membrane mom process known regulated multi domain bcl family proteins example pro apoptotic proteins bax bak responsible forming pores mom anti apoptotic proteins including bcl mcl bcl hand inhibit pore forming process interestingly although two subgroups proteins perform opposite apoptotic functions structures similar raises two highly interesting questions structurally similar proteins play opposite roles apoptosis roles different functional domains bcl family protein determining apoptotic property study generated series deletion mutants substitution chimera used combination molecular biology bio informatics living cell imaging techniques answer questions major findings bcl family proteins appear possess intrinsic pro apoptotic property termini proteins play active role suppressing pro apoptotic function apoptotic potency positively correlated membrane affinity alpha helix domains charge distribution flanking alpha helices also important apoptotic potency findings explain different members bcl family proteins similar domain composition function oppositely apoptotic process
human brown adipose tissue acknowledged newborns children adults first printed publications beginning century evidence existence adult brown fat published throughout century recently functionality active brown adipose tissue vivo adulthood confirmed contributed mainly advanced imaging technology namely hybrid positron emission tomography pet computed tomography able combine functional anatomical imaging data functionality commonly measured glucose analog fluoro deoxy glucose fdg tracers functions glucose uptake introduced well growing body evidence increased knowledge role brown adipose tissue human metabolism energy expenditure providing promising option management body weight balance disturbed glucose lipid metabolism elsevier ltd rights reserved
species living naturally fragmented habitats identification conservation units particularly challenging turks caicos rock iguanas cyclura carinata endemic turks caicos islands tci critically endangered lizards inhabit less historic range complete study geographic distribution genetic variation particularly important species due onset translocation programs fill knowledge gap genotyped individuals sampling locations across species range genotyped microsatellite loci variation within mitochondrial gene assessed sequencing use pcr rflps protein profiling analysis femoral pore secretions also conducted subset samples microsatellites suggest recent common population ancestry simple reduction gene flow account significant differences detected western eastern lineage within tci pattern confirmed mitochondrial dna sequence significantly distinguishing western eastern haplotypes broken vertical bar protein profiling provides support differentiating western eastern lineage implications results least two evolutionarily significant units esus recognized across taxon geographic range multiple management units within esu also defined future management planning carinata consider evolutionarily independent lineages
recent studies laboratories shown protein kinase delta pkc delta essential insulin induced glucose transport skeletal muscle insulin rapidly stimulates pkc delta activity skeletal muscle purpose study examine mechanisms regulation pkc delta protein availability studies done several models mammalian skeletal muscle utilized whole cell lysates differentiated myotubes pkc delta protein levels determined western blotting techniques pkc delta rna levels determined northern blotting pcr real time pcr insulin stimulation increased pkc delta protein levels whole cell lysates effect due inhibition insulin rate pkc delta protein degradation insulin also increased methionine incorporation pkc delta within min pretreatment cells transcription translation inhibitors abrogated insulin induced increase pkc delta protein levels also found insulin rapidly increased level pkc delta rna effect abolished inhibitors transcription insulin induced increase pkc delta expression reduced inhibition either kinase map kinase indicating signaling mechanisms involved consistent insulin activation pkc delta studies cells transfected pkc delta promoter demonstrate insulin activated promoter within min study indicates expression pkc delta may regulated rapid manner course insulin action skeletal muscle raise possibility pkc delta may immediate early response gene activated insulin elsevier inc rights reserved
significant amount understanding molecular events occurring viral replication originated studies utilizing cell lines cell lines normally obtained culture samples spontaneously occurring tumors derived genetic manipulation primary cells genetic events inducing immortalization transformation allow continual passage culture profound effects resulting marked loss cell type fidelity development induced pluripotent stem cells ipscs revolutionized field developmental biology ushering era personalized medicine wide range inherited genetic diseases previously development ipscs required dedicated facilities well highly detailed technical knowledge pace development field however rapid ipscs moving era shelf use whereby use manipulation cells well within ability majority laboratories standard tissue culture facilities introduction ipscs studies field virology still infancy far largely confined viruses difficult propagate experimental systems likely technology become standard methodology virologists armamentarium elsevier rights reserved
purpose purpose study determine endogenous regulation pattern tissue inhibitor metalloproteinase timp tree shrew sclera myopia development investigate capacity exogenous timp inhibit matrix metalloproteinase mmp vitro scleral collagen degradation myopia development vivo methods timp expression sclera myopia development assessed using polymerase chain reaction vitro timp inhibition mmp investigated using gelatinase activity plate assay zymography tree shrews injected collagen precursor undergoing monocular form deprivation concurrent daily subconjunctival injections either timp vehicle form deprived eye vivo ocular biometry changes monitored scleral tissue collected days assayed collagen degradation results development myopia associated mean reduction timp mrna expression days form deprivation activation activity mmp inhibited timp respectively vivo exogenous addition timp significantly reduced myopia development due reduced vitreous chamber elongation vivo timp treatment also significantly inhibited posterior scleral collagen degradation relative vehicle treated eyes levels similar control eyes conclusions myopia development mammals associated reduced expression timp contributes increased degradative activity sclera follows replenishment timp significantly reduced rate scleral collagen degradation myopia development
ethosuximide chiral drug substance primarily indicated treatment absence seizures drug used clinically racemate human urinary metabolites ethosuximide studied using chiral gas chromatography gas chromatography mass spectrometry metabolites identified previously reported unchanged ethosuximide enantiomers four stereoisomers hydroxyethyl methyl succinimide four stereoisomers ethyl hydroxy methylsuccinimide iii chemical derivatization methodology using electron impact ionization chemical ionization techniques two enantiomers previously unreported metabolite ethosuximide ethyl hydroxymethylsuccinimide identified copyright john wiley sons ltd
sialic acid sugars terminate cell surface glycans form ligands sialic acid binding immunoglobulin like lectin siglec family immunomodulatory receptors expressed immune cells interactions sialic acid siglecs regulate immune system aberrations contribute pathologies like autoimmunity cancer sialic acid siglec interactions living cells difficult study owing lack specific tools report glycoengineering approach remodel sialic acids living cells binding siglecs using bioorthogonal chemistry library cells sixty different sialic acid modifications generated showed dramatically increased binding toward different siglec family members rational design reduced cross reactivity led discovery three selective siglec ligands furthermore glyco engineered cells carrying sialic acid ligands siglec dampened activation siglec monocytic cells kappa irf pathways
birth asphyxia hypoxia arises impaired placental gas exchange labor remains one leading causes neonatal morbidity mortality worldwide condition strike pregnancies uneventful final moments leads fundamental loss cellular energy reserves newborn cascade metabolic changes occurs brain birth result hypoxia lead significant damage evolves several hours days severity ameliorated therapeutic cerebral hypothermia however treatment applied subset newborns meet strict inclusion criteria usually administered facilities high level medical surveillance hence number neuropharmacological interventions suggested adjunct therapies improve efficacy hypothermia alone improves survival post hypoxic infant altogether prevent adverse neurological outcomes review discuss prospect using creatine dietary supplement pregnancy nutritional intervention significantly decrease risk brain damage event severe oxygen deprivation birth brain damage also arise secondarily compromise fetal organs heart diaphragm kidney compromise mitochondrial function hypoxic conditions may common mechanism leading damage tissues present data suggesting dietary creatine supplementation pregnancy may effective prophylaxis protect fetus multi organ consequences severe hypoxia birth elsevier ltd rights reserved
patients lung cancer still high mortality recurrence rate adjuvant treatment poor five year survival rates despite advances multidisciplinary anti cancer therapies chemotherapy radiotherapy targeted therapies depends upon presence intratumoral heterogeneity complexity lung cancer growing evidence suggest osteopontin opn may play critical role tumor progression metastasis present review briefly describes structure molecular biology opn highlights role opn development metastasis lung cancer summarizes potential mechanisms opn heterogeneity tumor underline inconsistencies article emphasize importance understand role opn cancer evolution heterogeneity explore potential opn therapeutic target published elsevier ltd
immune defenses expected crucial survival considerable parasite pressures experienced wild animals however understanding association immunity fitness nature remains limited due complexity vertebrate immune system often limited availability immune reagents nonmodel organisms use methods reagents developed veterinary researchers domestic ungulates blood samples collected wild soay sheep population evaluate unusually broad panel immune parameters evaluation included different innate acquired immune cell types well nematode parasite specific antibodies different isotypes test markers correlate one another vary age group sex crucially whether predict winter survival either within among demographic groups found anticipated patterns variation markers age associated immune development age trends accounted correlations among immune markers generally weak found females higher proportions naive cells gamma delta cells males independent age markers differ sexes one markers predicted overwinter survival sheep higher plasma levels anti nematode igg antibodies significantly likely survive subsequent high mortality winter independent age sex weight supports previous finding study system using different set samples shows circulating antibody levels ecologically relevant parasites natural systems represent important parameter immune function may strong natural selection data provide rare insights patterns variation among age sex groups different cell subsets antibody levels wild suggest certain types immune response notably likely repeatable within individuals linked resistance ecologically relevant parasites may informative research links immunity fitness natural conditions
invasive trophoblast day horse conceptuses survives extrauterine sites allogeneic recipients immunologically naive donor major histocompatibility complex class antigens ectopic trophoblast retains utero characteristics including similar lifespan physiologic effect secreted product equine chorionic gonadotropin upon recipient ovaries induction host immune responses immunologic memory considered previously experimental system hypothesized primary exposure ectopic trophoblast would affect recipient immune status survival time subsequent transplants would altered secondary transplant lifespans could shortened destructive memory responses observed ectopic trophoblast studies rodents lengthened occurs male skin grafts follow multiple syngeneic pregnancies mice eight mares received two closely spaced trophoblast transplants grafts recipient obtained conceptuses sired stallion provide consistency histocompatibility antigen exposure donor stallions major histocompatibility complex class homozygotes cytotoxic antibody production tracked monitor recipients immune responses transplants detection serum equine chorionic gonadotropin used proxy transplant lifespan significant difference distributions primary secondary transplant lifespans despite evidence immunologic memory data demonstrate secondary ectopic trophoblast transplants horses experience earlier destruction prolonged survival following immune priming recipients mechanisms responsible eventual demise transplants remain unperturbed secondary immune responses chronic antigenic exposure
objectives interleukin recently described proinflammatory cytokine characterized induction inflammatory mediators present study investigated biological activity signal transduction alpha human pancreatic myofibroblasts methods mrna protein expression inflammatory mediators evaluated using real time polymerase chain reaction enzyme linked immunosorbent assay respectively expression alpha receptor pancreatic tissue evaluated using immunohistochemical technique intracellular signaling pathways evaluated using immunoblotting specific small interference rna transfected cells results interleukin alpha receptor complex racp detected fibrotic tissue chronic pancreatitis interleukin alpha dose time dependently induced mrna expression protein secretion cxcl cxcl mmp mmp human pancreatic myofibroblasts interleukin alpha assembled myd adaptor proteins myd traf irak tak complex furthermore alpha induced phosphorylation mitogen activated protein kinases activation nuclear factor kappa activator protein mitogen activated protein kinase inhibitors small interference rnas specific nuclear factor kappa activator protein significantly suppressed protein secretion inflammatory mediators induced alpha stimulation conclusions suggested alpha plays important role pathophysiology inflammation fibrosis pancreas via autocrine function
background although well established atrial natriuretic peptide gene disrupted anps mice useful model salt sensitive hypertension surprisingly little known control intrarenal renin angiotensin system ras pressure natriuresis mechanism key components blood pressure fluid electrolyte regulation aim study determine whether anp disruption results changes renal adrenal local ras acute pressure natriuresis mechanism methods renal adrenal renin angiotensin type angiotensin type receptor messenger rna expression levels determined northern blotting real time reverse transcriptase polymerase chain reaction plasma aldosterone renal adrenal angiotensin peptide levels determined radioimmunoassay examine acute pressure natriuresis response changes renal interstitial hydrostatic pressure rihp assessed manipulations renal arterial pressure rap anaesthetized mice results renal adrenal renin mrna angiotensin levels lower anps mice compared mice anp mice also greater renal adrenal mrna levels compared genotypes rap rihp significantly higher mice compared mice furthermore blunted slope rap rihp relationship increases rap anp mice conclusion data indicate anp disruption results blunting dynamic properties acute pressure natriuresis mechanism increased levels rap well reduced expression renal adrenal local ras
serotonin hydroxycinnamoyltransferase sht key enzyme synthesis feruloylserotonin coumaroylserotonin serotonin derivatives show strong antioxidant activity making valuable nutritional pharmacological use humans ectopic expression sht control endosperm specific glutelin prolamin promoters rice produced via agrobacterium mediated transformation sht expression confirmed southern blot analysis followed northern blotting sht enzyme activity analyses using total rna protein respectively extracted transgenic seeds glutelin glua promoter produced low sht mrna expression rice seeds whereas prolamin promoter expressed high levels sht mrna spite ectopic expression sht rice seeds transgenic genotypes accumulated levels serotonin derivatives similar found wild type rice furthermore data suggest serotonin rather phenylpropanid coas rate limiting substrate biosynthesis serotonin derivatives sht overexpressing transgenic rice seeds
chaperones fundamental regulating heat shock response mediating protein recovery thermal induced misfolding aggregation using qconcat strategy selected reaction monitoring srm absolute protein quantification determined copy per cell values key chaperones saccharomyces cerevisiae conditions normal growth heat shock work extends previous chemostat quantification study including five peptides per protein improve confidence protein quantification contrast global proteome profile cerevisiae response heat shock remains largely unchanged determined label free quantification many chaperones upregulated average two fold increase protein abundance interestingly eight significantly upregulated chaperones direct gene targets heat shock transcription factor performing absolute quantification chaperones heat stress first time able evaluate individual protein level response furthermore srm data used calibrate label free quantification values proteome absolute terms thus improving relative quantification two conditions study significantly enhances largely transcriptomic data available field illustrates nuanced response protein level
adipose tissue rich source multipotent mesenchymal stem like cells located perivascular niche based surface markers assigned two main categories cells adventitial stromal stem cells ascs cells pericytes pcs populations display heterogeneity unknown significance hypothesized aldehyde dehydrogenase aldh activity functional marker primitivity could help better define asc subclasses end stromal vascular fraction human lipoaspirate simultaneously stained fluorescent antibodies antigens aldh substrate aldefluor sorted fluorescence activated cell sorting individual ascs pcs selected extremities aldh staining spectrum transcriptionally profiled fluidigm single cell quantitative polymerase chain reaction predefined set marker genes single cell data applied differential expression principal component clustering analysis well original gene coexpression network reconstruction algorithm despite stochasticity single cell level covariation gene expression analysis yielded multiple network connectivity parameters suggesting perivascular progenitor cell subclasses possess following order maturity aldh asc primitive aldh dim asc aldh aldh dim least primitive order independently supported specific combinations class specific expressed genes confirmed analysis associated signaling pathways conclusion single cell transcriptional analysis four populations isolated fat surface markers enzyme activity suggests developmental hierarchy among perivascular mesenchymal stem cells supported markers coexpression networks stem cells
apolipoprotein apo constituent chylomicrons low density lipoprotein high density lipoprotein role apo human metabolism incompletely defined took advantage naturally occurring amino acid polymorphism present aboriginal north americans namely apo assessed hypothesis metabolic traits including obesity related lipoprotein related traits would differ carriers noncarriers apo genotyping assay developed apoc genotypes determined sample canadian oji cree subjects allele frequency apo allele similar sample observed apo allele significantly associated lower percent body fat lower waist circumference lower serum leptin levels lower plasma apo levels using newly developed elisa based method taken together results suggest whole human phenotype level apo associated complex metabolic trait obesity well serum leptin levels lahiry cao ban pollex mamakeesick zinman harris hanley huff conelly hegele apoc polymorphism associated reduced obesity indices lower plasma concentrations leptin apolipoprotein aboriginal canadians lipid res
niemann pick disease type neurovisceral lysosomal cholesterol trafficking lipid storage disorder caused mutations one two genes npc npc diagnosis often difficult task due wide range age onset clinical presentation disease combined complexity cell biology filipin laboratory testing even combination genetic testing led substantial delays diagnosis largely depending access specialist centres level knowledge physician area recent years advances mass spectrometry allowed identification several sensitive plasma biomarkers elevated cholestane beta alpha beta triol lysosphingomyelin isoforms bile acid metabolites together concomitant progress molecular genetic technology greatly impacted strategy laboratory testing specificity biomarkers currently investigation pathologies found also result elevations molecular genetic testing also limitations notably unidentified mutations classification new variants review intended increase awareness currently available approaches laboratory diagnosis provide date comprehensive critical evaluation various techniques cell biology biochemical biomarkers molecular genetics briefly discuss ongoing future developments use current tests proper combination enables rapid correct diagnosis large majority cases however even recent progress definitive diagnosis remains challenging patients combined genetic biochemical cytochemical markers provide clear answer expertise reference laboratories thus remain essential work still required fulfill unmet needs authors published elsevier inc
mastitis defined inflammation mammary gland generally effective treatment mastitis animals puerarin extracted radix puerariae proven possess many biological activities present study aims reveal potential mechanism responsible antiinflammatory action puerarin staphylococcus aureus aureus induced mastitis mice histopathological changes showed puerarin ameliorated inflammatory injury induced aureus quantitative real time polymerase chain reaction elisa analysis indicated puerarin suppressed production pro inflammatory cytokines tnf also promoted secretion toll like receptor tlr important immune defense aureus infection research molecular biology shown expression tlr inhibited administration puerarin studies performed mitogen activated protein kinase signaling pathways using western blot results demonstrated puerarin suppressed phosphorylated ikb extracellular signal regulated kinase erk jun terminal kinase jnk dose dependent manner results suggested puerarin may potential therapy treating mastitis copyright john wiley sons ltd
aimsthymomas thymic squamous cell carcinomas tsqccs rare thymic epithelial tumours data angiogenesis vascular phenotype tumours limited study taken histological world health organization subtypes account aim study compare vascularization pericytes coverage expression angiogenic growth factors different defined subtypes thymoma methods resultsvascular density diameter architecture expression smooth muscle actin sma platelet derived growth factor pdgf receptor pdgfr vascular endothelial growth factor vegf receptor vegfr vegf receptor vegfr investigated type thymomas tsqccs use immunostaining quantitative morphometry tumour vessel isolation trypsin digestion expression levels angiopoietin ang angiopoietin ang vegf pdgf hif examined quantitative reverse transcription polymerase chain reaction thymomas characterized dense network capillary like vessels tight pericyte coverage whereas thymomas showed loose vascular network increasing vascular diameters increasing expression sma pdgfr thymomas tsqccs vegfr vegfr expressed vessels analysed tumour entities higher levels epithelial cells thymomas tsqccs mrna ang ang significantly regulated thymoma subtypes highest levels found thymomas tsqccs ang vegf predominantly regulated growth factors hif regulated thymomas tsqccs conclusionthymomas tsqccs differ significantly vascular architecture expression key angiogenic growth factors findings could help improve differential diagnosis difficult classify thymic epithelial tumours indicate different mechanisms tumour angiogenesis functional differences tumour vessels major thymoma subtypes tsqccs
trehalose important disaccharide also key stress resistance factor development many organisms including plants bacteria fungi insects study potential function trehalose development behaviour cdna trehalose phosphate synthase catantops pinguis cpitps cloned sequenced results revealed cpitps cdna sequence contains open reading frame nucleotides encoding protein amino acids predicted molecular weight kda value northern blot pcr analyses showed cpitps mrna expression high fat body testes ovaries malpighian tubules brain trachea rectum posterior extensor pinguis northern blotting revealed cpitps mrna expressed fat body different developmental stages present high level first instar larvae adults results demonstrate cpitps key gene pinguis development
leptospirosis systemic infection causes among others acute kidney injury acute liver disease muscle pain vasculitis bleeding disorders reproductive loss effort reduce uterine inflammatory responses induced leptospira evaluated anti inflammation effects emodin thymol astragalin mouse model results showed treatment emodin thymol astragalin alleviated uterine inflammation induced leptospira infection via suppression pro inflammatory cytokine expression prevented tissue damage furthermore used primary endometrium epithelial cells show treatment chemicals inhibited expression proinflammatory cytokines tnf alpha beta using enzyme linked immunosorbent assay quantitative polymerase chain reaction western blot results showed chemicals suppressed phosphorylation extracellular signal regulated kinase jun terminal kinase results indicate treatment emodin thymol astragalin suppressed inflammatory response regulating kappa mitogen activated protein kinase signaling pathways leptospira infected uterine endometrium epithelial cells mice
micrornas mirnas new family small rna molecules found plants animals developed comprehensive strategy identifying new mirna homologues mining repository available citrus expressed sequence tags ests adopting range filtering criteria identified total potential mirnas nine five nine mirnas citrus trifoliata ctr mirnas clementina ccl mirnas reticulata crt mirnas sinensis csi mirnas respectively est sequences citrus using potential mirna sequences conducted blast search mrna database found six potential target genes citrus species eight mirnas selected order verify existence citrus using northern blotting functions several mirnas mirna mediated gene regulation experimentally suggested appears mirnas regulate expression target genes cleavage common situation gene regulation mediated plant mirnas achievement identifying new mirnas citrus provides powerful incentive studies important roles mirnas
family proteins parasitic worms combine terminal hand domains terminal dynein light chain like domains data accumulating biochemistry cell biology proteins however little known functions vivo schistosoma mansoni expresses family members smtal smtal three smtal smtal smtal subjected biochemical analysis demonstrated different molecular properties although overall folds predicted similar small changes hand domains result differences ion binding properties whereas smtal smtal able bind calcium ions smtal appears unable bind divalent cations similar biochemical diversity seen cabp proteins fasciola hepatica four family members known fhcabp bind calcium ions however fhcabp dimerizes presence calcium ions fhcabp dimerizes absence calcium ions fhcabp dimerizes regardless prevailing calcium ion concentration smtal fhcabp families proteins also differ ability bind calmodulin antagonists related drugs interestingly smtal interacts praziquantel drug choice treating schistosomiasis pharmacological significance finding unknown
dna nanotechnology enables synthesis nanometer sized objects site specifically functionalized large variety materials reasons dna based devices dna origami considered applications molecular biology nanomedicine however many dna structures need higher ionic strength common cell culture buffers bodily fluids maintain integrity degraded quickly nucleases overcome deficiencies coated several different dna origami structures cationic poly ethylene glycol polylysine block copolymer electrostatically covered dna nanostructures form dna origami polyplex micelles dopms straightforward cost effective robust route protect dna based structures could therefore enable applications biology nanomedicine unprotected dna origami would degraded
alpha expansin riexpa gene cloned sequenced raspberry expression riexpa different ripening stages raspberry fruits detected northern blotting showed level riexpa transcript accumulation increased fruit ripening highest level expression appeared later stages ripening indicates expression riexpa closely correlated ripening softening raspberry fruits order determine whether expression riexpa regulated ethylene cloned sequenced aminocyclo propane carboxylic acid synthase cdna riacs encodes rate limiting enzyme ethylene production transcript accumulation riacs detected low level later stage fruit ripening reveals ethylene regulatory factor riexpa expression raspberry fruit results investigation suggest expression riacs gene ripening resembles non climacteric fruits elsevier ireland ltd rights reserved
vitamin generic term referring pyridoxine pyridoxamine pyridoxal related phosphorylated forms pyridoxal phosphate catalytically active form vitamin acts cofactor different enzyme reactions animals pyridoxal phosphate recycled food degraded enzymes salvage pathway essentially involves two ubiquitous enzymes atp dependent pyridoxal kinase fmn dependent pyridoxine phosphate oxidase made pyridoxal phosphate targeted dozens different apo enzymes synthesized cell mechanism regulation salvage pathway mechanism addition pyridoxal phosphate apo enzymes poorly understood represent challenging research field pyridoxal kinase pyridoxine phosphate oxidase play kinetic roles regulating level pyridoxal phosphate formation deficiency pyridoxal phosphate due inborn defects enzymes seems involved several neurological pathologies addition inhibition pyridoxal kinase activity several pharmaceutical natural compounds known lead pyridoxal phosphate deficiency understanding exact role vitamin pathologies requires better knowledge metabolism homeostasis vitamin article summarizes current knowledge structural kinetic regulation features two enzymes involved plp salvage pathway also discuss proposal newly formed plp may transferred either enzyme apo enzymes direct channeling efficient exclusive protected means delivery highly reactive plp new perspective may lead novel interesting findings well serve model system study macromolecular channeling article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
tumor suppressor pinka functions beyond cell cycle control via cyclin dependent kinases coordinated remodeling glycosylation increase presentation endogenous lectin galectin sensing changes surface pinka expressing pancreatic carcinoma cells capan lead potent pro anoikis signals show pinka dependent impact growth regulatory lectins limited galectin also concerns galectin monitoring expression relation pinka status well running anoikis assays galectin cell transfectants downregulated lectin expression negative correlation anoikis presence lectin established nuclear run northern blotting experiments revealed effect presence pinka steady state levels galectin specific mrna differed decreasing transcriptional rate cell surface galectin interferes galectin initiates signaling toward pro anoikis activity via caspase activation detected opposite effects pinka levels growth regulatory galectins shift status markedly towards galectin dependent pro anoikis activity previously undescribed orchestrated fine tuning effector system tumor suppressor discovered
myocardial ischemic preconditioning regulated protein mipu cloned laboratory male wistar rats subjected left anterior coronary artery ligation sham operation sacrificed ligation expression mipu mrna protein assessed northern blotting real time quantitative pcr situ hybridization western blotting expression mipu regulated lasted peak mipu mrna protein signals express endothelium myocardium normal infarcted heart mainly infarcted zone fluorescent immunocytochemistry showed mipu protein localized nuclei myogenic cells upregulated cells exposed observations indicates mipu may play role maintaining vascular homeostasis protecting myogenic cells injured ischemia reperfusion oxidation stress
objectives aim study effect trimethylamine tma metabolism industrial catalyst dimethylethylamine dmea ascertain whether biological monitoring industrial exposure dmea compromised excretion malodorous dmea sweat urine increased dietary intake tma methods dmea tma given simultaneously weekly six weeks five healthy volunteers plasma collected one hour doses urine hours doses specimens analysed gas chromatography nitrogen sensitive detector results amines readily absorbed gastrointestinal tract excreted urine within hours dmea tma oral intake tma increased dmea content plasma urine dose dependently although large individual differences plasma urinary tma concentrations also increased dose dependently moreover findings suggested formation endogenous tma little dealkylation dmea tma considerable first pass metabolism conclusions although intake tma reduced oxygenation dmea tma total urinary dmea values aggregate dmea oxide dmeao excretion unaffected thus monitoring occupational exposure dmea analysis biological specimens confounded dietary intake tma provided total urinary dmea monitored although increased urinary hidrotic excretion dmea may contribute body odour problems primarily due tma excretion much greater
aim determine potential roles microrna mir gastric cancer methods levels mir determined gastric cancer cells quantitative real time polymerase chain reaction used measure level mrna luciferase reporter assay western blotting performed examine effect mir expression tumor sphere mtt assays carried evaluate self renewal chemo resistance properties gastric cancer cells results expression greatly increased mir decreased gastric cancer cells highly enriched cancer stem cells cscs results demonstrated mir regulated targeting directly untranslated region utr gastric cancer cells overexpression mir repressed activity utr disruption mir utr interactions abrogated silencing effects addition mir inhibition stimulated utr activity disruption mir utr interactions abrogated stimulatory effect enforced expression greatly increased tumor sphere formation chemoresistance gastric cancer cells furthermore inhibition cscs chemo sensitivity gastric cancer cells treated mir significantly abrogated overexpression conclusion mir targeting plays critical roles regulation tumor growth chemo resistance gastric cancer
forensic toxicology deals evaluation plasma concentrations foreign substances human body administered doses estimated blood concentrations time offence evaluated example genetically caused changes metabolizing enzymes pharmacogenetics well induction inhibition enzymes involved pharmacokinetics affect plasma concentrations taken account assessment specialist literature consulted daily routine expert witnesses expected answer corresponding questions immediately questioned court paper presents overview important pharmaceutical drugs illegal drugs including degradation pathways well known polymorphisms beyond possibility potential interactions assessed presented chart practical use foro
investigate function evolutionary origin soxe subgroup amplified genomic dna misgurnus anguillicaudatus using pair degenerate primers using race obtained two versions sox masoxa masoxb anguillicaudatus overall sequence identity deduced amino acids two genes one amino acid change high mobility group domain southern blotting evidence phylogenetic tree provided proof existence two sox genes genomic level first evidence two distinct sox genes cypriniformes semi quantitative real time quantitative pcr assays showed expression trend genes opposite early embryonic development expressed ubiquitously several adult tissues similar expression patterns indicated masoxa masoxb possible overlapping functions
setting xpert mtb rif widely used molecular assay rapid diagnosis tuberculosis number polymerase chain reaction cycles detectable product generated cycle threshold value correlates bacillary burden objective investigate association xpert values smear status systematic review individual level data meta analysis design studies association values smear status included descriptive systematic review authors studies including smear culture xpert results asked individual level data receiver operating characteristic curves calculated results citations included descriptive systematic review fifteen data sets studies potentially relevant individual level data meta analysis provided individual level data samples patients patients positive xpert results least one respiratory sample samples overall roc analysis revealed area curve auc cut values yielded sensitivities specificities smear positive samples conclusion xpert values smear status strongly associated however diagnostic accuracy set cut values would replace smear microscopy values compare smear microscopy predicting infectiousness remains seen
peripheral neuronal activation inflammatory mediators multifaceted physiological response involves multitude regulated cellular functions one key pathway shown involved inflammatory pain isgq gpcr whose activation inflammatory mediators followed regulated response cation channel transient receptor potential vanilloid trpv however mechanism underlies trpv activation downstream gpcr pathway yet fully defined study employ pharmacological molecular biology tools dissect activation mechanism via perforated patch recordings calcium imaging neurons heterologous system showed trpv activity downstream gpcr activation produced subdued current noticeably different robust current typical trpv activation exogenous stimuli moreover specifically demonstrated pathways downstream gpcr signaling namely endovanilloid production lipoxygenases channel phosphorylation pkc converge trpv evoke tightly regulated response importance show pathways acting trpv inflammatory mediated response achieved propose requirement multiple signaling events allows subdued trpv activation evoke regulated neuronal response inflammation kumarr hazan geron steinberg livni matzner priel activation transient receptor potential vanilloid lipoxygenase metabolites depends pkc phosphorylation
hepatocellular carcinoma hcc results several factors like viral hepatitis infection hepatitis occupational exposure helper inflammatory cells characterized interferon ifn gamma interleukin secretion predominate liver chronic hcv infection chemokines attracting cells particularly important disease progression among chemokines non elr group ifn gamma induced protein monokine induced ifn gamma mig ifn inducible cell alpha chemoattractant tac attracts cells interacting chemokine receptor cxcr uniquely shown prognostic utility marker treatment outcome ifn gamma induced chemokines mig may promote lymphocyte recruitment hcc playing important roles cancer immunology production cxc chemokines hcc cell lines shown identified immune gene signature predicts patient survival including chemokine gene inflammatory cytokines tumour necrosis factor alpha ifn gamma toll like receptor ligands stimulate intratumoral production chemokines drive natural killer cells tumor infiltration leading enhanced cancer cell death furthermore selective recruitment cxcr cells bridges proinflammatory response protumorigenic macrophage polarization hcc shown suggesting blocking cxcr cell migration function may help defeat hcc also shown overexpression induced liver graft injury may lead cisplatin resistance via atf grp stress signaling pathway hcc neutralizing antibody could potential adjuvant therapy sensitize hcc cisplatin treatment
aim aim present study evaluate risk residual neoplastic foci patients treated breast conservative surgery based duct carcinoma situ dcis grading materials methods study based retrospective analysis resection specimens relative patients patients underwent surgical excision first specimen shown one margins involved dcis margins oriented side margin involved recorded clonal analysis using mitochondrial dna mtdna technique obtained selected cases results residual neoplastic foci found excised specimens specifically residual foci dcis grade found frequently margin facing nipple respectively contrary foci dcis grade show specific distribution clonal dna analysis evidenced dcis grade foci present excision specimens genetically similar tumor removed first specimen dcis grade foci clonally related conclusions present data confirm dcis grade characterized circumscribed neoplastic process extending along large ducts probably single mammary lobe contrary dcis grade characterized multiple independent neoplastic foci dispersed several lobes indicating field multiple independent foci cancer harbor elsevier ltd baso similar association cancer surgery european society surgical oncology rights reserved
background elevation fatty acid synthase fas human cancers often associated increased tumor aggression basic genetic mechanisms leading increased enzyme content cancer cells investigated using cell lines derived human metastatic breast carcinomas skbr normal human breast epithelium materials methods western analysis northern blotting malonyl coa incorporation assays nuclear run transcription assays mrna decay assays poly tail assays used measure compare transcription rates fas gene among four cell lines results western analysis fas levels times lower times greater non neoplastic cells fas mrna levels specific activity correlated protein content contrast relative rates fas gene transcription significantly higher non neoplastic cells skbr stability message investigated explain discrepancy half life fas mrna cells fold less skbr poly tail assays showed fas mrna species cells tended longer breast cancer cell lines versus respectively conclusion breast cancer cell lines contained significantly fas enzyme message activity nonneoplastic cells yet cells exhibited higher rates fas gene activation discrepancy explained faster decay fas message cells suggesting stabilization fas mrna plays major role overexpression protein breast cancer increased stability could explained simply degree polyadenylation therefore mechanism must responsible conferring stability fas rna species breast cancer cells
uridine cytidine kinase uck catalyzes phosphorylation uridine cytidine several pyrimidine ribonucleoside analogs overexpressed purified two known isoforms human uck escherichia coli produced specific antibody uck characterized kinetic properties uck max purified recombinant uck fold higher uridine cytidine respectively compared observed purified recombinant uck enzyme uck fold higher uridine cytidine respectively compared observed purified recombinant uck enzyme uck antibody showed cross reactivity uck data showed uck expressed several neuroblastoma cell lines including four mycn single copy cell lines five mycn amplified cell lines exception uck expressed sjnb results indicate uck neuroblastoma might used selective target chemotherapy using uck dependent pyrimidine analogues
phylogeny often used compare entire families genes proteins previously showed classification caenorhabditis elegans rho gtpases basis enzymatic properties significantly different sequence alignments develop concept developed integrated approach classify elegans small gtpases based functional data comprising affinity gtp sub cellular localization tissue distribution silencing impact analysis led establish novel functional classification small gtpases test relevance classification mammals focused attention human orthologs small gtpases specific group comprising arf evl arl yebr unc rab tested involvement protein secretion membrane traffic mammalian systems using approach identify novel network containing gtpases functionally interacting proteins conserved elegans mammals involved membrane traffic protein secretion
antioxidant activities crude extract derived soluble fractions flower sophora viciifolia evaluated five different test systems dpph abts frap reducing power inhibition lipid peroxidant models first time ethylacetate soluble fraction exhibited highest antioxidant effect correlation analysis suggested flavonoids might major contributors high antioxidant activity flower addition compounds isolated flower antioxidant capacities flavonoids evaluated dpph assay compound luteolin significant dpph radical scavenging activity also present highest concentration dry sample implying important role antioxidant activity flower study suggests flower viciifolia provide valuable functional ingredients used prevention diseases related various oxidant products human metabolism elsevier ltd rights reserved
intellectual property rights iprs become key concern researchers industry basically high tech sectors iprs regularly figure prominently scientific journals scientific conferences lead dedicated workshops increase awareness ipr savviness scientists biotechnology journal published report expert meeting synthetic biology intellectual property rights organized danish agency science technology innovation sponsored european research area network era net synthetic biology erasynbio provided number recommendations variety stakeholders current article offers deeper reflections interface iprs standards data exchange systems biology sysbio resulting expert meeting funded another era net erasysapp meeting brought together experts stakeholders scientists company representatives officials public funding organizations sysbio different european countries despite different profiles stakeholders meeting variety interests many concerns opinions shared case particular views expressed specific type stakeholder explicitly mentioned text article explore number particularly relevant issues discussed meeting offer recommendations sysbio involves study biological systems called systems level new concept life sciences many former approaches physiology enzymology scientific disciplines already taken systemic view selected biological subjects yet sysbio gained strong interest within past years one predominant reason critical prerequisite success story relevant scientific methodologies research tools become far powerful accurate remarkable technical progress allows scientists generate collect display analyse quantitative qualitative data biological processes activities much greater volumes velocity variety veracity skilful integration multiple heterogeneous data sets allows scientists model predict biological processes sysbio interdisciplinary nature requires data models research assets formatted described standard ways enable exchange reuse high quality data allows effective utilisation enormous potential rests big data analysis finally sysbio often closely linked provides foundation synthetic biology synbio standardization data exchange sysbio may result challenges opportunities related iprs aim article raise awareness issues within sysbio scientific community stimulate exploration different strategies dealing iprs order optimize access use valuable research results
vivo metabolism study humans carried investigate toxicokinetics metabolism sodium selenate differentiating trimethyl selenium tmse status therefore changes blood plasma concentration urinary excretion within seven healthy subjects oral administration dietary supplement containing sodium selenate selenium analyzed three subjects belong subgroup tmse eliminators four subjects related non tmse eliminators subgroup concentrations total selenium blood plasma urine samples determined inductively coupled plasma mass spectrometry icp additionally speciation analysis urine samples performed using icp coupled liquid chromatography system plasma selenium concentration changed supplementation considering individual hour background amounts renal excreted selenium ingestion caused additional excretion cap administered dose maximum elimination already exposure differentiated analysis revealed subjects main elimination product administered dose unmetabolized selenate tmse detected urine tmse eliminators subgroup excreted comparison non tmse eliminators significantly lower amount selenate one subject metabolized selenate larger portion methyl acetamido deoxy seleno beta galactopyranoside sesug methyl amino deoxy seleno beta galactopyranoside sesug subjects showed minor metabolism selenate selenium containing carbohydrates individuals excrete tmse urine basically selenate metabolized marginally excreted rapidly via urine generally contrast considerable portion inorganic selenium compound metabolized individuals eliminate tmse basically elevated metabolism may also provided individuals eliminate high levels selenium containing carbohydrates basically difference metabolism may imply different disposition pharmacological toxic effects exposure inorganic selenium compounds
museum collections critical resources examining comparative anatomy developmental biology life history hypotheses evaluation skeletal collections provides insight spatio temporal species population individual variation associated environmental social epidemiological history endangered species primates collections provide data nearly impossible replicate today first series papers reviewing great ape holdings peabody museum natural history yale university describe pan troglodytes skeletal collection although collection central africa atlantic coast includes several pan troglodytes subspecies multiple age sex classes present craniodental postcranial elements available age class material assessed developmental disease trauma socioecological indicators multiple indicators metabolic stress present likely associated nutritional epidemiological factors instances trauma injury ranging antemortem perimortem events described individuals injuries likely associated intraspecific intrasexual competition violence whereas others suggestive infanticide attempts injuries associated interspecific violence value forensic examination evaluation yale peabody museum collection provides baseline future research testable hypotheses alternate techniques isotopic analyses calculus noninvasive genetic testing museum collections continue provide new insights taxonomic individual variation environmental cues ultimately allow comparisons modern historical environmental behavioral variables
background administration cisplatin limited due nephrotoxic side effects prevention nephrotoxicity cisplatin difficult mesenchymal stem cell msc derived exosomes implicated novel therapeutic approach tissue injury study demonstrated pretreatment human umbilical cord msc derived exosomes hucmsc prevent development cisplatin induced renal toxicity activation autophagy vitro vivo methods vitro rat renal tubular epithelial nrk cells pre incubated exosomes hucmsc hfl human lung fibroblast cells control min methyladenine autophagic inhibitor rapamycin autophagic inducer cisplatin treatment respectively cells harvested apoptosis assay enzyme linked immunosorbent assay elisa western blot quantitative real time polymerase chain reaction qrt pcr vivo constructed cisplatin induced acute kidney injury rat models prior treatment cisplatin hucmsc hfl injected kidneys via renal capsule methyladenine rapamycin injected kidney capsule hucmsc animals sacrificed days cisplatin injection renal function luminex assay tubular apoptosis proliferation autophagy response evaluated results hucmsc inhibited cisplatin induced mitochondrial apoptosis secretion inflammatory cytokines renal tubular epithelial cells vitro hucmsc increased expression autophagic marker protein lcb autophagy related genes atg atg nrk cells rapamycin mimicked effects hucmsc protecting cisplatin induced renal injury effects abrogated autophagy inhibitor methyladenine animals conclusions findings indicate activation autophagy induced hucmsc effectively relieve nephrotoxicity cisplatin therefore pre treatment hucmsc may new method improve therapeutic effect cisplatin
cellular adaptive immune response plays key role resolving influenza infection experiments individuals successively infected different strains within short timeframe provide insight underlying viral dynamics role cross reactive immune response resolving acute infection construct mathematical model within host influenza viral dynamics including three possible factors determine strength cross reactive cellular adaptive immune response initial naive cell number avidity interaction cells epitopes presented infected cells epitope abundance per infected cell model explains experimentally observed shortening second infection cross reactivity present shows memory cellular adaptive immune response necessary protect second infection
background myocarditis inflammation heart muscle follow various viral infections children rarely develop life threatening acute viral myocarditis avm given causal viral infections common unknown genetic lesions might underlie susceptibilities mouse genetic studies demonstrated interferon ifn alpha beta immunity defects increased susceptibility virus induced myocarditis moreover variations human tlr potent inducer ifns proposed underlie avm objectives study sought evaluate hypothesis human genetic factors may underlie avm previously healthy children methods tested role tlr ifn immunity using human induced pluripotent stem cell derived cardiomyocytes performed whole exome sequencing unrelated children acute myocarditis proven viral causes results found tlr stat deficient cardiomyocytes susceptible coxsackie virus cvb infection control cells moreover cvb induce ifn alpha beta ifn alpha beta stimulated genes control cardiomyocytes finally exogenous ifn alpha substantially protect cardiomyocytes cvb observe significant enrichment rare variations tlr ifn alpha beta related genes surprisingly found homozygous heterozygous rare variants genes associated inherited cardiomyopathies significantly enriched avm patients compared healthy individuals patients diseases seven patients carried rare biallelic homozygous compound heterozygous nonsynonymous splice site variations cardiomyopathy associated genes bag dsp pkp ryr scna tnni conclusions previously silent recessive defects myocardium may predispose acute heart failure presenting notably common viral infections children american college cardiology foundation
study aimed investigate effect socs silencing proliferation apoptosis melanoma cells vivo vitro studies immunohistochemical staining used detect socs expression melanoma tissues pigmented nevi quantitative real time polymerase chain reaction western blotting applied detect messenger rna protein expressions socs primary human melanocytes malignant melanoma cell lines mel melanoma cells assigned mock negative small interfering rna socs small interfering rna groups proliferation cell cycle apoptosis messenger rna expression socs cells detected using mtt assay flow cytometry quantitative real time polymerase chain reaction respectively expressions socs protein extracellular signal regulated kinase janus kinase signal transduction activators transcription signaling pathways related proteins detected using western blotting establishment subcutaneous xenograft tumor models nude mice latent period size volume growth speed xenograft tumors mock negative small interfering rna socs small interfering rna groups examined compared results indicated positive expression rate socs higher malignant melanoma tissues pigmented nevi cells highest messenger rna protein expressions socs followed cells compared mock negative small interfering rna groups socs small interfering rna group showed lower cell viability elevated cell apoptosis cells phase less cells phases decreased messenger rna protein expressions socs erk jak stat stat compared mock negative small interfering rna groups socs small interfering rna group showed longer latent period tumor smaller tumor size volume smoother tumor growth curve conclude socs silencing inhibit proliferation induce apoptosis melanoma cells vivo vitro inhibiting extracellular signal regulated kinase janus kinase signal transduction activators transcription signaling pathways
background calcium handling proteins known play pivotal role pathophysiology cardiomyopathy however little known early changes diabetic heart impact insulin treatment ins methods zucker diabetic fatty rats treated without insulin zdf ins lean littermates controls sacrificed age weeks zdf ins treated insulin last weeks life gene expression atpase cardiac sarcoplasmatic reticulum sercaa abbreviated serca phospholamban plb determined northern blotting transport sarcoplasmatic reticulum assessed oxalate facilitated uptake left ventricular homogenates addition isolated neonatal cardiomyocytes stimulated cell culture insulin glucose triiodthyronine positive control mrna expression serca plb measured taqman pcr furthermore effects insulin treatment force contraction relaxation evaluated cardiomyocytes grown three dimensional collagen matrix engineered heart tissue eht stimulated days insulin western blot phosphorylations status akt determed influence wortmannin results serca levels increased zdf zdf ins compared control control zdf zdf ins control control zdf whereas plb significantly decreased zdf zdf ins control zdf zdf ins control control increase serca plb ratio zdf zdf ins accompanied enhanced uptake control zdf zdf ins min control interestingly significant correlation uptake sercaa expression shown vitro experiments effect insulin sercaa mrna expression seemed direct effect cardiomyocytes furthermore long term treatment engineered heart tissue insulin increased serca plb ratio accelerated relaxation time akt significantly phosphorylated insulin effect could abolished wortmannin conclusion current data demonstrate early type diabetes associated increase serca plb ratio insulin directly stimulates serca expression relaxation velocity results underline important role insulin calcium handling proteins cardiac adaptation process type diabetes mellitus contributing cardiac remodeling show important role kinase akt sercaa signaling cascade
atomic force microscopy afm employed reveal morphological changes supported phospholipid bilayers hydrolyzed phospholipase pla enzyme buffer solution room temperature based high catalytic selectivity pla toward enantiomer phospholipids five kinds supported bilayers made dipalmitoylphosphatidylcholines dppc including dppc upper leaflet adjacent solution dppc bottom leaflet short racemic prepared mica surface gel phase explicate kinetics mechanism enzyme induced hydrolysis reaction detail afm observations bilayer show hydrolysis rate dppc significantly increased pla hydrolysis products desorb substrate surface min enantiomers included bilayer hydrolysis rate largely decreased comparison bilayer time used hydrolyze prepared bilayers pla increases sequence inert enzyme action enantiomers enantiomer hybrid bilayers remain mica surface end hydrolysis reaction confirmed hydrolysis reaction catalyzed pla preferentially occurs edges pits defects bilayer surface bilayer structures preserved hydrolysis process based observations novel kinetics model proposed quantitatively account pla catalyzed hydrolysis supported phospholipid bilayers model simulation demonstrates pla mainly binds lipids perimeter defects upper leaflet leads hydrolysis reaction yielding species soluble solution phase lipid molecules underneath subsequently flip upper leaflet maintain hydrophilicity bilayer structure analysis shows enantiomers hybrid bilayers considerably reduce hydrolysis rate ineffective binding pla elsevier rights reserved
consider general problem sensitive specific discrimination biochemical species important instance immune discrimination self self also observed experimentally ligands discrimination threshold negatively impact response phenomenon called antagonism wecharacterize mathematically generic properties discrimination first relating biochemical adaptation based basic biochemical rules establish surprisingly antagonism generic consequence strictly specific discrimination made independently ligand concentration thus antagonism constitutes phenotypic spandrel phenotype existing necessary product another phenotype exhibit simple analytic model discrimination displaying antagonism antagonism strength linear distance detection threshold contrasts traditional proofreading based models antagonism vanishes far threshold thus displays inverted hierarchy antagonism compared simpler models phenotypic spandrel studied expected structure many decision pathways immune detection mediated tcrs epsilon ris well endocrine signalling disruption
environmental dna edna comprises dna fragments shed environment organisms extracted environmental samples water soil characterization edna allow researchers infer presence absence species particular site without need locate identify individuals therefore may provide extremely valuable tool quantifying biodiversity however often case relatively new protocols methodological challenges remain number earlier reviews discussed challenges none provided extensive treatment critical decisions surrounding molecular markers primer development use edna assays review discusses number options approaches used determining primers gene regions appropriate either targeted species detection metabarcoding macro organisms edna latter represents new field growing rapidly potential revolutionize future assessments community ecosystem diversity
type porcine reproductive respiratory syndrome prrs virus prrsv first isolated korea commercial prrs modified live vaccine ingelvac prrs mlv boehringer ingelheim vetmedica inc joseph missouri usa based type prrsv first licensed use week old pigs korea objective present study evaluate efficacy year old commercial prrs modified live vaccine mlv two recent prrsv isolates two genetically distant type prrsv strains snuvr lineage snuvr lineage isolated used challenge virus regardless challenge virus vaccination pigs effectively reduced level viremia lung lesions prrsv antigen within lung lesions induction virus specific interferon gamma secreting cells prrs vaccine produced protective immune response leading reduction prrsv viremia significant differences efficacy two recently isolated viruses prrs mlv based virological results immunological responses pathological outcomes study demonstrates prrs mlv used study still effective recently isolated heterologous type prrsv strains even years use million pigs elsevier rights reserved
auxin implicated vast array plant processes concomitant detailed understanding cellular mechanisms underlying biosynthesis transport perception become increasingly clear auxin also instructive roles plant pattern formation moreover turns multitude instances early establishment body axes organogenesis shoot root plant tissue patterns owe robust flexibility part feedback interactions involving auxin higher resolution cell biology molecular genetics genomics well live imaging used together define parameters needed generate detailed precise mathematical models plant development
sugar accumulation content major characteristics watermelon fruit quality sweet watermelon inbred non sweet watermelon accession used study enzymology transcriptome dynamics sugar metabolism accumulation watermelon fruit development found differences sugar metabolism enzyme activities lead different photosynthate assignment acid galactosidase insoluble invertase activities may play important role oligosaccharides hydrolyzation sucrose accumulation soluble acid invertase may contribute decomposition sucrose glucose fructose high activities sucrose synthase sucrose phosphate synthase necessary accumulating sugars sweet watermelon fruits digital expression profiling flesh mesocarp four critical stages fruit development confirmed enzyme activities transcriptome level results indicate corporate action photosynthate phloem unloading partitioning metabolism determine sugar content sweet watermelon non sweet watermelon
understanding landscape structure shapes genetic structure populations keystone species important long term management tested unidirectional dispersal hypothesis linear river landscape wouri river one catchment one gene pool hypothesis red mangrove rhizophora racemosa populations cameroon estuary complex therefore conducted release recapture experiments field sampled adult trees plant material genetic analyses allowed estimating genetic diversity structure well dispersal directionality genetic diversity populations downstream differ significantly upstream populations molecular variance populations correlate position linear landscape contemporary historical migration estimates indicated bidirectional dispersal downstream upstream direction along wouri river confirmed propagule dispersal directions derived field experiments bayesian clustering analysis assigned individuals estuary one cluster suggesting high inter catchment connectivity river flow currents tides wind plausibly operate together ensure high genetic connectivity within complex estuary
assumed resistance ionizing radiation well cross resistance abiotic stresses side effect evolutionary based adaptation anhydrobiotic animals dehydration stress larvae polypedilum vanderplanki withstand prolonged desiccation well high doses ionizing radiation exposure understanding mechanisms cross tolerance types stress exposure profiled genome wide mrna expression patterns using microarray techniques chironomid larvae collected different stages desiccation exposure two types ionizing radiation high linear energy transfer let ions dose low let radiation gamma rays expression profiles wide transcriptional response desiccation stress much exceeded amount regulated transcripts irradiation exposure observed extensive group coincidently regulated overlapped transcripts response desiccation ionizing radiation found among overlapped set transcripts indicated anhydrobiosis related genes antioxidants late embryogenesis abundant lea proteins heat shock proteins overexpressed group protein isoaspartate aspartate methyltransferase pimt probes corresponding lea proteins represented performed functional analysis showed strongly enriched gene ontology terms associated protein methylation addition active processes dna repair detected assume cross tolerance sleeping chironomid desiccation irradiation exposure comes complex mechanism adaptation anhydrobiosis
phenyl naphthylamine pbna represents example suspected carcinogen found negative mutagenicity clastogenicity testing well long term animal carcinogenicity bioassays several species carcinogenic risk excluded metabolic conversion known human carcinogen naphthylamine also epidemiologic studies failed indicate elevated bladder cancer risk humans occupationally exposed pbna amounts naphthylamine found urine different species including humans exposure pbna indicate unequivocally pbna dephenylated extent explained naphthylamine impurities technical grade pbna explain metabolic dephenylation process suggested pbna metabolized cytochrome cyp enzymes phenolic derivative hydroxy phenyl naphthylamine followed oxidation quinone imine subsequently hydrolyses form dephenylation product naphthylamine phenolic metabolites initial cyp mediated activation step rapidly conjugated quantitatively dephenylation pbna naphthylamine minor pathway dog represents animal model appears approximate human metabolism biological activation pbna based published data worst case scenario indicates total pbna taken transferred naphthylamine however vitro well vivo findings pbna may point significantly smaller conversion rate metabolites anticipated metabolism naphthylamine detected far assumption may well overestimation compatible findings animal experiments explains lack direct evidence carcinogenicity pbna experimental epidemiological studies
regulation gap junctional protein connexin arterial smooth muscle cells smcs features response injury atherosclerosis parallel phenotypic transition synthetic state tgf beta known role smc differentiation extracellular matrix ecm synthesis key characteristics phenotypic state set examine effects tgf beta gap junction expression relation smc differentiation ecm synthesis growth expression analysed immunoconfocal microscopy western blotting primary human aortic smcs treated tgf beta period assessment gap junctional communication cell cell transfer microinjected ethidium bromide parallel synthetic activity analysed northern blotting ecm components alpha alpha iii procollagen transcripts contractile differentiation assessed immunoconfocal microscopy western blotting markers smooth muscle actin calponin smooth muscle heavy chain isoform growth measured brdu incorporation results demonstrate tgf beta significantly regulates expression intercellular communication concert increased expression alpha actin calponin concomitant contractile protein expression ecm synthesis increased rather decreased tgf beta inducing significant regulation procollagen transcripts effects independent growth conclude human aortic smcs tgf beta treatment leads regulation mediated gap junctional communication increased synthetic activity yet somewhat paradoxically also enhanced contractile differentiation elsevier gmbh rights reserved
purpose review last nine decades large advances made toward characterization pathogenic basis clinical management von willebrand disease vwd prevalent inherited bleeding disorder pathological variations von willebrand factor vwf locus present range quantitative qualitative abnormalities make complex clinical spectrum vwd review describes current understanding pathobiological basis vwd recent findings molecular basis type qualitative abnormalities type vwd total quantitative deficiency well characterized recent decades however knowledge type vwd partial quantitative deficiency remains incomplete allelic locus heterogeneity trait complicated genetic variability vwf gene interactions vwf gene environment involvement external modifying loci recent genome wide association studies linkage analyses sought identify additional genes modify type vwd phenotype summary understanding pathogenic basis vwd facilitate development novel treatment regimens disorder improve ability provide complementary molecular diagnostics type vwd
enzyme substrate binding dynamic process intimately coupled protein structural changes turn changes unfolding energy landscape use single molecule force spectroscopy smfs characterize open closed conformational transition experienced hyperthermophilic adenine diphosphate adp dependent glucokinase thermococcus litoralis triggered sequential binding substrates absence substrates mechanical unfolding tigk shows intermediate stabilized presence center dot adp first substrate bind enzyme however presence substrate additional unfolding event observed intermediate finally presence substrates unfolding force intermediates increases consequence domain closure results show smfs used powerful experimental tool investigate binding mechanisms different enzymes one ligand expanding repertoire protocols traditionally used enzymology
background cervical cancer common gynecologic malignant tumor great impact women health human papillomavirus hpv implicated cervical cancer precancerous lesions two possibly two stages disease progression technological development molecular biology epidemiology detection treatment hpv become important means prevent cervical cancer methods present novel rapid sensitive specific isothermal method recombinase polymerase amplification rpa established detect two common high risk human papillomavirus type type dna study evaluate efficacy rpa assay incubating clinical specimens hpv hpv using plasmids standard operates constant low temperature without thermal instrumentation incubation products detected via agarose gel electrophoresis assay reverse dot blot assay quantitative real time assay sybr green assess diagnostic performance rpa assay detecting hpv hpv clinical samples patients suspected cervical cancer results results revealed cross reaction hpv genotypes rpa assay achieve sensitivity copies compared taqman qpcr rpa technique achieves exponential amplification need pretreatment sample dna degrees minutes reveals satisfactory performance agreement rpa qpcr assays kappa hpv positivity kappa hpv positivity indicating good correlation tests conclusions importantly rpa assay demonstrated useful powerful method detection hpv virus therefore may serve valuable tool rapid diagnosis hpv infection commercial clinical applications
ovis ammon darwini listed nearthreatened species iucn world conservation union due hunting poaching competition domestic livestock habitat destruction study molecular biology research provides scientific basis protection sustainable utilization key endangered species mitochondrial genome useful researches ecology systematics conservation biology study complete mitochondrial genome sequence darwini determined next generation sequencing data length contains proteincoding genes pcgs rrnas genes trnas genes non coding control region base composition genome content phylogenetic analysis suggested systematic status darwini closed related hodgsoni clustered ammon mitogenome darwini offered significant information molecular genetic research ammon
thyroid gland exceptionally high selenium content even selenium deficiency least selenoproteins expressed may involved protection gland high amounts produced thyroid hormone biosynthesis determined situ hybridization northern blotting experiments glutathione peroxidases gpx selenoprotein moderately expressed occurring selectively follicular cells leukocytes germinal follicles thyroids affected hashimoto thyroiditis selenoprotein marginally expressed distributed cell types gpx mrna exclusively localized thyrocytes showed highest expression levels regulated thyroid cancer samples compared matched normal controls gpx could extracted thyroidal colloid incubation sodium dodecyl sulfate indicating enzyme secreted follicular lumen loosely attached colloidal thyroglobulin findings consistent role selenoproteins protection thyroid possible damage particularly gpx might use excess catalyze polymerization thyroglobulin highly cross linked storage form present colloid
wealth data accumulated completely sequenced genomes high throughput experiments global studies biological systems simultaneously investigating multiple biological entities genes transcripts proteins become routine network representation frequently used capture presence molecules well relationship network biology widely used molecular biology genetics several network properties shown functionally important discuss methodology useful translational biomedical research scientists traditionally focus one small set genes diseases drug candidates one time first give overview network representation frequently used biology nodes edges represent review application preclinical research date using cancer example review network biology facilitate system wide approaches identify targeted small molecule inhibitors types inhibitors potential specific resulting high efficacy treatments less side effects compared conventional treatments chemotherapy global analysis may provide better insight overall picture human diseases well identify previously overlooked problems leading rapid advances medicine clinicians point view necessary bridge gap theoretical network biology practical biomedical research order improve diagnosis prevention treatment world major diseases
nematodes possess external structure known cuticle crucial development survival structure composed primarily collagen secreted underlying hypodermal cells extensive studies using free living nematode caenorhabditis elegans demonstrate formation cuticle requires activity extensive range enzymes enzymes required pre secretion synthesis component proteins collagen post secretion removal previous developmental stage cuticle process known moulting exsheathment excretion secretion products numerous parasitic nematodes contain metallo serine cysteine proteases proteases conserved across nematode phylum many involved moulting exsheathment process review highlights enzymes required cuticle formation focus post secretion moulting events orthologues elegans enzymes identified parasitic nematodes may represent novel candidate targets future drug vaccine development published elsevier ltd behalf australian society parasitology inc open access article license http creativecommons org licenses
introduction stable isotope breath tests rapidly quantitatively report metabolic phenotypes disease humans microbes situ labelled compound administered acted upon human microbial metabolism producing labelled gas detected exhaled breath areas covered review details unique advantages disadvantages phenotypic stable isotope based breath tests review recent patent applications prosecutions since conducted finally current clinical trials product pipelines approved products discussed expert opinion stable isotope breath tests offer new approaches rapid minimally invasive detection study metabolic phenotypes human microbial patent literature developed considerably last years patent applications made rates issuance remain high although rejections citing subject matter eligibility novelty obviousness description enablement best mode occurred prior art significantly greater human metabolism microbial may drive differing rates future issuance biomarker diagnostic tools enable optimization drug doses diagnosis metabolic disease progression detection infectious disease optimize treatment
study report identification characterization novel zinc finger protein znf human embryonic heart cdna library znf composed three exons two introns maps chromosome cdna znf encoding amino acids amino terminal krab domain seven carboxyl terminal zinc finger motifs nucleus cytoplasm northern blotting analysis indicated transcript specific znf expressed liver lung spleen testis kidney especially higher level lung testis human adult tissues reporter gene assays showed znf transcriptional repressor overexpression znf cos cells inhibited transcriptional activities sre could relieved rnai analysis deletion studies showed krab domain znf may involved inhibition bmb reports
develop computational tools analysis nonlinear genotype phenotype relationships epistasis among multiple loci dominance interactions among multiple alleles within locus theory distinguishes separable traits removable epistasis traits essential epistasis separable traits transformed natural scale additive methods apply methods present solve natural scale exactly possible approximately graph methods methods allow enumeration counting sampling distinct trait architectures satisfying constraints separability theory tool provided diagnosing separability constraints violated given nonseparable architecture genetic traits controlled limited numbers loci alleles algorithm enumerates possible trait structures finds exact error minimizing linearizing transformations formulating constrained optimization program find fraction possible distinct genetic traits satisfying simple criteria fully approximately linearized high small systems falls number alleles loci increases
aim study estimate leptin gene arggln genotypes polymorphism patients coronary heart disease obesity materials methods patients coronary heart disease chd obesity comprehensively examined patients treatment cardiologic unit kuz kharkiv city hospital basic clinic department internal medicine clinical immunology allergology kharkiv national medical university ukraine comparison group consisted ischemic heart disease patients normal body weight practically healthy persons formed control group groups comparable age sex study include patients serious accompanying pathology respiratory organs digestion kidneys persons oncological diseases results control group following distribution leptin gene arggln alleles genotypes polymorphism frequency people allele made allele people genotypes persons respectively patients chd allele made allele patients genotypes patients chd respectively group patients combination chd obesity patients allele allele people genotypes respectively comparison leptin gene arggln alleles genotypes polymorphism frequency detection groups showed reliable differences alleles genotype patients chd obesity allele genotype control group allele control group patients chd obesity reliable differences group chd patients control group distribution detected alleles genotypes frequency leptin gene arggln polymorphism found conclusions results study allele genotype leptin gene arggln polymorphism patients chd associated obesity
initial treatment non small cell lung cancer nsclc usually relies surgical resection followed systemic cytotoxic chemotherapy radiation therapy recent advances understanding nsclc biology immunology spurred development numerous targeted therapies particular class immune modulatory drugs targeting immune checkpoint pathways demonstrated remarkable durable remissions select minority advanced nsclc patients potentially heralding elusive cancer cure review focuses clinical evidence one agents nivolumab clarifies role drug context targeted therapies currently available treatment nsclc also discuss impact nivolumab patient quality life health economics
human parvovirus harmful pregnancy since vertically transmitted developing fetus addition anti antibodies induced infection believed cytopathic role transmission however knowledge regarding effects anti antibodies pregnancy limited investigate possible roles anti antibodies pregnancy present study examined effects anti unique region vpu anti anti nonstructural protein immunoglobulin igg antibodies bewo trophoblasts briefly bewo trophoblasts incubated purified igg vpu subsequently expression surface proteins apoptotic molecules assessed bewo trophoblasts using flow cytometry elisa western blotting expression levels human leukocyte antigen hla significantly increased bewo trophoblasts treated rabbit anti vpu igg unchanged treated rabbit anti anti igg compared control group furthermore expression levels globoside blood group antigen cluster differentiation beta integrin significantly increased bewo trophoblasts treated rabbit anti anti igg whereas also significantly increased cells treated anti vpu igg addition number cells sub phase caspase activity expression intrinsic extrinsic apoptotic molecules including fas associated death domain protein activated caspase activated caspase cell lymphoma associated protein cytochrome apoptotic peptidase activating factor activated caspase significantly increased bewo trophoblasts treated anti vpu anti igg conclusion present study demonstrated antibodies may crucial role pathological processes pregnancy findings may help elucidate mechanisms underlying transmission virus pregnancy
salinity adverse environmental stress limits yield quality maize one important osmolytes present higher plants glycinebetaine helps stabilize metabolism plant cells protects constituents cells damage study gene atriplex micrantha encodes betaine aldehyde dehydrogenase introduced agrobacterium mediated transformation maize inbred lines zheng control maize ubiquitin promoter putative transgenic plants confirmed pcr southern blotting analysis transgenic maize plants expressed higher amounts betaine aldehyde dehydrogenase activity also grew better plants nacl stress compared wild type transgenic plants increased fresh weight lower malondialdehyde content lower relative electrical conductivity higher chlorophyll content taller plant height higher grain yield salt stress indicated expression badh gene maize seedlings enhanced salt tolerance plants
study aimed evaluate protein metabolism effect zanthoxylum alkylamides explore potential mechanism streptozotocin stz induced diabetic rats diabetic rats orally treated per alkylamides daily days alkylamides decreased relative weight liver food intake significantly increased relative skeletal muscle weight significantly decreased blood urea nitrogen levels insulin insulin like growth factor total protein albumin alb globular proteins alb proteins globulin protein levels serum significantly increased rna content rna dna ratio significantly increased skeletal muscle diabetic rats real time quantitative polymerase chain reaction results indicated alkylamides significantly increased mrna expression insulin receptor inr igf insulin like growth factor receptor igfr liver skeletal muscle moreover mrna protein expression levels pik pkb mtor significantly increased whereas atrogin muscle ring finger foxo skeletal muscle significantly decreased alkylamides may advance protein synthesis pik pkb mtor signalling pathway attenuate catabolism protein ubiquitin proteasome pathway therefore possible alkylamides ameliorate protein metabolism disorders diabetic rats activating mtor pathway
purpose review present date evidence pathogenicity low density lipoprotein receptor ldlr variants propose strategy suitable implementation clinical work familial hypercholesterolaemia recent findings variants described ldlr gene patients clinical diagnosis familial hypercholesterolaemia however less functional evidence pathogenicity summary spectrum variants ldlr identified patients clinical familial hypercholesterolaemia increasing novel variants still reported however ldlr variants need evidence confirmed mutations causing disease even applying recent american college medical genetics variant classification large number variants still considered variants unknown significance obtaining undisputable confirmation effect expression activity ldlr reporting variants part clinical diagnosis patient holds risk might need withdrawn later stage investment made develop functional assays characterize ldlr variants unknown significance better patient diagnosis prevent confusion physician office
describe novel approach metabolic network reconstruction order switch full reaction metabolite scheme synthetic description pathway level network thus obtained retains much information original model allowing easier graphical visualizations multiscale modeling apply approach state art database human metabolic network recon approach allows different ranking network elements based topology markov dynamics induced network structure
tropical herbivorous insects astonishingly diverse many highly host specific much evidence suggests herbivorous insect diversity function host plant diversity yet diversity lineages exceeds diversity plants although species herbivorous fruit flies neotropical genus blepharoneura strongly host specific deposit eggs single host plant species flower sex species collected multiple hosts flowers may represent examples lineages diversifying via changes host use investigate patterns diversification within six geographically widespread blepharoneura species collected reared least two host plant species host plant parts use microsatellites test evidence local genetic differentiation associated different sympatric hosts different plant species flower sexes examine geographic patterns genetic differentiation across multiple south american collection sites four six fly species find evidence local genetic differences flies collected different hosts six species show evidence geographic structure consistent differences flies collected guiana shield flies collected amazonia continent wide analyses reveal one instance genetically differentiated flies collected sympatry different host species different sex flowers one another closest relatives indicating genetic differences often arise allopatry least coincident evolution novel host use
obese adipose tissue produces proinflammatory molecules tumor necrosis factor alpha local effects adipocyte physiology systemic effects organs many studies linking tnf alpha obesity insulin resistance lipid metabolism conducted rats rabbits dogs results observed several studies conflicting many able reproduce humans human makes difficult interpretation effect tnf alpha human metabolism objective conduct systematic review human studies relates tnf alpha insulin resistance lipoprotein metabolism methods searched pubmed database studies humans human tissue human cell lines linking tnf alpha obesity insulin resistance lipoprotein results increased production tnf alpha adipose tissue obese tnf alpha decreases cellular response insulin adipocytes hepatocytes human muscle cells increase tnf alpha patients dyslipidemia inactivation tnf alpha affects lipid metabolism human hepatocytes tnf alpha inhibits expression apo may decrease secretion high density lipoproteins tnf alpha affects excretion cholesterol inhibiting enzyme cholesterol alpha hydroxylase hepatocytes conclusion tnf alpha decreases cellular response insulin effects metabolism cholesterol lipoproteins humans better understanding mechanisms inflammatory response induced obesity humans lead identifying new therapeutic targets prevent complications associated obesity nutr hosp doi
report first time electroretinographic erg evidence progressive retinal abnormalities girl presented infancy ocular features albinism gradually developed choroidal sclerosis patchy retinal atrophy leading diagnosis knobloch syndrome omim cola age months nystagmus esotropia prompted ophthalmic evaluation appearance choroidal sclerosis atrophic retinal patches led evaluation age years genetics consultation obtained infancy age years retinal findings evolved full field erg responses scotopic photopic conditions recorded ages compared healthy control subjects age months erg response parameters within normal limits age tyrosinase tyr gene sequencing revealed one novel mutation temperature sensitive polymorphism suggesting diagnosis oculocutaneous albinism type oca age years significant attenuation scotopic photopic erg responses genetic analysis led identification homozygous mutation dupc cola gene thus confirming diagnosis knobloch syndrome patient knobloch syndrome developed abnormal erg responses similar found cola knockout mice thus documented progressive attenuation scotopic photopic responses
aims evaluate levels bacterial species saliva situ assess whether design brackets influences risk developing periodontal disease twenty patients mean age bonded self ligating brackets conventional bracket saliva collected bonding days bonding one sample bracket removed days bonding analysis determined checkerboard dna dna hybridization data evaluated non parametric test significant increase levels bacterial species saliva occurred analyzed species self ligating brackets presented highest incidence percentages orange red complexes days bonding situ analyses showed different patterns according bracket design levels campylobacter rectus showed significant differences days bonding among three brackets highest values observed ovationa bracket bracket design seems influence levels bacterial species involved periodontal disease considering wide variety bacterial species additional studies needed aid establishment effective protocols prevent development periodontal disease orthodontic treatment dynamic alteration oral microbiota may lead inflammatory reactions supporting soft hard tissues different types brackets interfere bacterial adherence bracket design considered orthodontic treatment
amphiregulin epiregulin belong epidermal growth factor egf family act mitogenic stimulators via binding egf receptors egfrs amphiregulin epiregulin thought play role regenerative responses gastrointestinal tract study investigated secretion amphiregulin epiregulin human colonic subepithelial myofibroblasts semfs mrna expression protein secretion amphiregulin epiregulin evaluated northern blotting western blotting respectively trophic effects amphiregulin epiregulin semfs analyzed mtt assays amphiregulin epiregulin mrnas detected unstimulated semfs among various cytokines growth factors interleukin beta tumor necrosis factor alpha egf strongly induced amphiregulin epiregulin mrna expression responses markedly reduced specific inhibitor egf receptor tyrosine kinases amphiregulin epiregulin secretion also detected protein level mtt assays demonstrated amphiregulin epiregulin stimulate proliferation semfs demonstrated expression amphiregulin epiregulin semfs amphiregulin epiregulin may play important role mechanism underlying wound healing damaged colonic mucosa
following discovery structure dna became dear scientists needed able distinguish different dna sequences edward southern published details new method detecting dna fragments based upon specific sequence indication importance work technique eponymously named subsequent methods based loosely similar principles named using play surname western northern blot simplicity effectiveness technique led universal acceptance standard method identification dna sequences modern laboratory turn around times assume ever greater importance process seem relatively time consuming cases led replacement rapid techniques long range pcr nevertheless years invention southern blot remains cornerstone molecular biology
isolated cloned full length cdnas transthyretin ttr genera lamprey petromyzon marinus lampetra appendix sequences represent first report ttr sequences vertebrates basal teleost fishes deduced amino acid sequence lamprey ttr cdnas showed identity vertebrates secondary structure predictions homology based modeling consistent ttrs vertebrates cdnas lacked signatures found ttr like sequences non vertebrates evolutionary interest observation termini lamprey ttr subunits nine amino acids longer eutherian ttrs four six amino acids longer vertebrates sequencing intron confirmed longer terminal region result position intron exon splice site supporting previous studies ttr mrna detected variety larval lamprey tissues highest levels found liver ttr mrna also readily detected northern blotting livers animals phases lifecycle significantly elevated metamorphosis upregulation lamprey ttr gene expression major developmental event consistent observations vertebrates vertebrates studied date transient upregulation ttr gene expression thyroid hormone distributor protein coincides thought facilitate surge serum thyroid hormone concentrations required normal development however lampreys upregulation ttr gene expression occurs serum thyroid hormone concentrations lowest elsevier inc rights reserved
field stem cell biology cell therapy regenerative medicine expanded almost exponentially last decade clinical trials evaluating potential therapeutic use stem cells many adult pediatric lung diseases vascular component bronchopulmonary dysplasia bpd chronic obstructive pulmonary disease copd idiopathic pulmonary fibrosis ipf pulmonary arterial hypertension pah extensive research activity exploring lung resident circulating progenitor cells contribution vascular complications chronic lung diseases researchers hope use resident circulating stem progenitor cells treat chronic lung diseases vascular complications becoming clear progress mechanobiology help understand various influences physical forces extracellular matrix composition phenotype features progenitor cells stem cells current review provides overview current concepts field
field cell biology particle counting intracellular images important investigating cause diseases however particles manually counted human observers manually counting takes lot time counting result becomes subjective automatic counting method computer realized treat large number images obtain many objective data development automatic counting method much contributes understand case disease however particle counting intracellular images computer new research field conventional methods little thus propose counting method based regression analysis use partial least squares regression auto correlation two different types features using mask patterns higher order local autocorrelation feature proposed method gives higher accuracy counting principal component regression support vector regression imagej experiment proposed method count small error comparison human counting effectiveness method shown experiments wiley periodicals inc
food restriction affects activation immune system although metabolic cost associated mounting response rarely examined except model animals wild animals constantly exposed variations availability food resources need balance energy budget fight pathogens examined effect food restriction fish eating myotis myotis vivesi species bat experiences periods foraging limited due ambient conditions tested hypothesis acute food restriction similar restriction night would reduce caloric response lipopolysaccharidae lps injection compared bats fed libitum also measured proxy body temperature skin expected reduced fever development food intake limited bats restricted diet similar resting metabolic rate total caloric cost tskin lps challenge fed libitum however delay metabolic pyrogenic responses bats restricted diet effect acute food restriction delaying hyperthermia development fish eating myotis might importance capacity fight pathogens similar bats fish eating myotis fast several consecutive days entering torpor future work warranted understand effect long periods food restriction bat immune response deutsche gesellschaft fur saugetierkunde published elsevier gmbh rights reserved
proline accumulation involved plant osmotic stress tolerance given dna methylation related almost metabolic processes regulation gene expression suspected epigenetic modification proline biosynthesis probably related test investigated whether osmotic stress induced proline accumulation associated dna methylation modifications rice assessed dna methylation expression key genes pcr pcs delta oat involved proline biosynthesis measured proline content osmotic stress polyethylene glycol control conditions osmotic stress selfed progenies osmotic stressed plants accumulated higher concentrations proline leaves normal conditions osmotic stress unstressed control plants concomitantly osmotic stress selfed progeny plants showed higher expression levels pcs oat control regulated expression stably inherited subsequent generation methylation sensitive southern blotting indicated genes pcs delta oat greater dna demethylation selfed progenies control apparently dna demethylation facilitated proline accumulation regulating expression pcs delta oat genes response osmotic stress
biochemical analysis biological substances found crime scene important aspect forensic investigations objective determine identification crime victims suspects persons interest one particular biochemistry molecular biology based area interest forensic analysis forensic serology area focuses complex task gathering information regarding type age ethnicity gender sample originator biological fluids blood saliva etc found crime scene review cover various studies involving biocomputing techniques used analysis biological samples namely blood different forensic applications studies covered include differentiation gender ethnicity using biocomputing system produces binary result well determination blood spot age applications showcased review produces sometimes ambiguous results would normally pose major problems study however addition biocomputing logic provides extra level certainty clarity hope convey advantages utilizing biocomputing methods various forms forensic analysis
cold serious threat limits productivity tomato cold sensitive crop cold tolerant gene dreba plays crucial roles survival plants cold stress developed cold stress tolerant transgenic plants tomato overexpression arabidopsis dreba gene obtained using eha strain agrobacterium harboring pbih binary vector contained dreba controlled inducible promoter lip hygromycin phosphotransferase gene hpt plant selectable marker sequential day old vitro seedlings pre culture period agrobacterium density min infection period acetosyringone yielded transformants identified pcr self pollinated generate progeny evaluated gene expression cold tolerance analyses atdreba transcript expression detected pcr stable integration atdreba gene confirmed southern blotting morphological analyses generations demonstrated significant differences among transgenic plants normal growth conditions transgenic lines exhibited cold stress tolerance exposed degrees compared counterparts findings clearly indicate transgenic tomato plants expressing arabidopsis dreba gene enhanced protection provided cold tolerance controlled conditions transgenic containment friends science publishers
full length citrate synthase gene designated magcs isolated banana fruit cdna library contained fragment carrying open reading frame orf encodes amino acid protein magcs includes glyoxysomal targeting signal pst oxaloacetic acid binding site citrate synthase active site southern blotting showed banana genome two copies magcs magcs constitutively expressed organs high levels fruit lowest levels leaves natural ripening magcs expression pattern similar ethylene production respiration rate magcs expression could induced ethylene inhibited ethylene receptor inhibitor methylcyclopropene mcp accordance ripening related ethylene synthesis respiration rate demonstrates magcs associated ethylene biosynthesis oxaloacetic acid accelerated fruit ripening contrast citric acid delayed expression magcs aminocyclopropane carboxylic acid acc oxidase gene maaco acc synthase gene maacs evaluated real time quantitative pcr qpcr showed expression magcs maaco maacs greatly improved suppressed results indicate magcs plays important role postharvest banana fruit ripening could affect fruit ripening effect climacteric ethylene ripening progress due regulation magcs maaco maacs expression elsevier rights reserved
attempts characterize quantify modulate activity secreted phospholipase family enzymes result diversity physiological roles enzymes implicated palmitoyl pyrenedecanoyl phosphatidylglycerol pyrenepg based fluorometric assay sensitive readily adaptable method elucidating phospholipase function various experimental conditions well tool screening chemical libraries potent inhibitors enzymatic activity assay based observed difference fluorescent emission pyrene aggregated vesicles compared sequestered monomeric form binding bovine serum albumin lipolytic activity thus allowing direct quantification hydrolyzed fatty acids measurement corresponding monomeric emission intensity assay carried multiwell plates high throughput screening compound libraries
multicellular organisms cellular components constantly translocated within cells also transported exclusively limited cells regardless physical distance exosomes function one key mediators intercellular transportation external vesicles identified years ago plants reconsidered exosome like vesicles meanwhile well known exosomal component tetraspanin regulates sperm egg fusion mammals number arabidopsis tetraspanins also expressed reproductive tissues fertilization localized plasma membrane protoplasts moreover containing structures microexosomes released mouse eggs maturation promote sperm egg fusion phenomenon implies two types shared component intercellular carriers might released multiple types plant animal cells widely regulate biological phenomena herein highlight discrete structures formation processes functions
flavonoids biologically active compounds food potential health effects used caco cell monolayer model study absorption metabolism two flavonols class flavonoids specifically kaempferol galangin metabolism experiments allowed identification five kaempferol conjugates glucuronide sulphate glucurono sulphate four galangin conjugates glucuronides sulphate using specific enzyme hydrolysis hplc hplc post column metal complexation tandem transport studies showed flavonols conjugated inside cells transported across monolayer effluxed back apical side sulphated conjugates preferentially effluxed back apical side whereas glucuronides mostly transported basolateral side kaempferol small amount unconjugated aglycone permeated directions indicating passive diffusion kaempferol glucuronide quercetin sulphate applied either side cells permeation either direction observed indicating conjugates cross cell monolayer formation apical kaempferol glucuronides readily saturated whereas formation conjugates apical side basolateral side increased increasing concentration kaempferol implying different transporters responsible apical basolateral sides results highlight important complex metabolic changes occurring flavonoids absorption elsevier ltd rights reserved
embryo implantation involves complex sequence events large amount molecules postulated involved interaction embryo endometrium study evaluated endometrial expression inhibin glycan mid secretory phase women scheduled vitro fertilization ivf tested whether markers associated implantation failure performed nested case control study including women submitted ivf embryo transfer divided groups cases implantation failure controls confirmed clinical pregnancy endometrial inhibin glycan gene expression evaluated mid secretory phase natural menstrual cycle immediately ivf using real time polymerase chain reaction found higher gene expression inhibin fold increase glycan fold increase implantation failure patients compared confirmed clinical pregnancy patients areas receiver operating characteristics curves prediction implantation failure context inhibin glycan respectively present results suggest high expression levels inhibin glycan transcripts secretory phase endometrium associated lower chance achieving pregnancy ivf
glaucoma second leading cause blindness worldwide usually diagnosed higher age groups goal survey patient age influences development glaucoma web based search aging visual system influence glaucoma performed important results summarized prevalence glaucoma rises age aging processes trabecular meshwork uveoscleral outflow pathway lead rise intraocular pressure chronically elevated intraocular pressure leads remodelling lamina cribrosa narrowing pores ganglion cell axons leave eye age dependent glia cell mitochondria immune system alterations discussed influence glaucoma patient age age related nonophthalmological systemic diseases also influence adherence persistence prescribed therapy aging important risk factor developing glaucoma main factor influences therapy course disease point time remains unclear extent additional factors determine development glaucoma
stable agrobacterium mediated transformation system established using bialaphos selective agent soybeans glycine max merr cotyledonary node explants soybean cultivar inoculated agrobacterium tumefaciens strain eha harboring vector pcambia containing gus gene reporter gene bar gene conferring bialaphos resistance highest frequency gus transient expression obtained inoculation day cultivation tumefaciens strain eha efficient gus expression observed regenerated shoots explants day cultivation combined culturing shoot induction medium sim without bialaphos days followed bialaphos weeks bialaphos sim shoot elongation medium sem effectively selected transformants putative transformants escapes could exactly distinguished using half leaf gus assay method detect gus expression elongated resistant shoots resulted shortening culture period early detection transformed shoots transformation efficiency system transgenic plants verified polymerase chain reaction pcr southern blotting herbicide resistant responses four transgenic plants fertile transmitted phenotypes gus bar ratio progeny results indicate established system suitable breeding herbicide resistant transgenic cultivars well functional genomics studies soybeans
precision medicine new strategy aims preventing treating human diseases focusing individual variations people genes environment lifestyle precision medicine used cancer diagnosis treatment shows evident clinical efficacy rapid developments molecular biology genetics sequencing technologies well computational technology enabled establishment big data human genome project provides basis precision medicine head neck squamous cell carcinoma hnscc aggressive cancer high incidence rate low survival rate current therapies often aggressive carry considerable side effects much research indicates precision medicine used hnscc may achieve improved results perspective present overview current status potential strategies challenges precision medicine hnscc focus targeted therapy based cell surface signaling receptors epidermal growth factor receptor egfr vascular endothelial growth factor vegf human epidermal growth factor receptor pik akt mtor jak stat ras raf mek erk cellular signaling pathways gene therapy treatment hnscc also discussed
obesity associated skeletal muscle insulin resistance crucial step development type diabetes among mechanisms obesity may lead insulin resistance lipotoxicity one hypotheses explored others include inflammation oxidative stress hypotheses review focuses role diacylglycerols dag family lipid metabolites implicated pathogenesis lipotoxicity insulin resistance recent studies report contradictory results humans regard importance dag induced insulin resistance skeletal muscle current literature highlight potential role dag signalling molecules review discuss possible hypotheses explaining contradictory results need explore role dag human metabolism
background exercise training positively influences exercise tolerance functional capacity patients idiopathic pulmonary arterial hypertension ipah however underlying mechanisms unclear hypothesized exercise modulates activated inflammatory state found ipah patients methods single cardiopulmonary exercise testing performed ipah patients healthy subjects phenotypic characterization peripheral blood mononuclear cells circulating cytokines assessed directly exercise results exercise testing ipah patients showed elevated lymphocytes regulatory lymphocytes tnf alpha whilst lymphocytes reduced ipah patients healthy subject exercise caused immediate relative decrease lymphocytes sustained reduction beta higher decrease higher peak oxygen consumption ipah patients conclusions exercise seems safe immune inflammatory point view ipah patients results demonstrate exercise aggravate inflammatory state seems elicit immunemodulating effect ipah patients
significance last years metabolic reprogramming fluctuations bioenergetic fuels modulation oxidative stress became new key hallmarks tumor development cancer elevated glucose uptake high glycolytic rate source adenosine triphosphate constitute growth advantage tumors represents universally known warburg effect gave rise one major clinical application detecting cancer cells using glucose analogs positron emission tomography scan imaging recent advances glucose utilization carbon sources tumors much heterogeneous initially thought indeed new studies emerged revealed dual capacity tumor cells glycolytic oxidative phosphorylation oxphos metabolism oxphos metabolism relies predominantly mitochondrial respiration exhibits fine tuned regulation respiratory chain complexes enhanced antioxidant response detoxification capacity critical issues oxphos dependent cancer cells use alternative oxidizable substrates glutamine fatty acids diversity carbon substrates fueling neoplastic cells indicative metabolic heterogeneity even within tumors sharing clinical diagnosis metabolic switch supports cancer cell stemness bioenergy consuming functions proliferation survival migration invasion moreover reactive oxygen species induced mitochondrial metabolism nutrient availability important interaction tumor microenvironment components carcinoma associated fibroblasts immune cells participate metabolic interplay neoplastic cells collectively adapt dynamic manner metabolic needs cancer cells thus participating tumorigenesis resistance treatments future directions characterizing reciprocal metabolic interplay stromal immune neoplastic cells provide better understanding treatment resistance
reverse transcriptase domain copia retrotransposons amplified genomic dna aquatic perennial grass zizania latifolia griseb wild relative rice total different sequences obtained according alignment phylogenetic analysis classified seven distinct families five containing multiple sequences two containing single sequence nucleotide sequence similarity values varied widely among sequences indicative high degree heterogeneity sequences intact whereas others frameshift stop codon southern blot analysis revealed differential occurrence latifolia copia retrotransposons among representative species grass family upon three groups divided interesting observation whereas occurrence patterns groups among grass species compatible organismal phylogeny group iii shows apparent incongruity cytosine methylation proposed major mechanism controlling transpositional behavior amplification hence distribution mobile elements extent pattern epigenetic modification analyzed zizania copia retrotransposons southern blotting pair isoschizomers hpall mspl differential sensitivity cytosine methylation revealed atypical methylation pattern latifolia copia retrotransposons found two seven families families showed typical methylation patterns found plants heavily methylated cng rest five families showed atypical pattern cng methylated verified using latifolia copia mixture probe addition homologues latifolia copia elements exist cultivated rice common wild rice largely undermethylated highly conserved though showed evidence methylation alteration several rice zizania introgression lines thus atypical patterns cytosine methylation copia retrotransposons latifolia might played role differentiation distinct groups differential occurrence homologs species grass family elsevier rights reserved
background aims assess efficacy safety dexamethasone dex intravitreal implant patients active serpiginous choroiditis already receiving maximal tolerated systemic immunosuppressive therapy methods retrospective longitudinal study evaluated patients receiving dex intravitreal implant active despite maximal systemic immunosuppression medical history reviewed period months patient diagnosed activity using direct fundus examination blue light fundus autofluorescence primary outcomes rate disease control functional changes end follow secondary outcomes incidence injection related adverse events success immunosuppression tapering last examination results examined eight eyes seven patients controlled activity one injection five eyes two injections one eye three injections two eyes total implants best corrected visual acuity end investigational period improved two eyes remained stable four eyes decreased two eyes three eyes showed transient intraocular pressure increase two eyes disclosed cataract progression average dosage systemic prednisone baseline dex intravitreal implant decreased day conclusions dexamethasone intravitreal implant may effective treatment option control active serpiginous lesions patients increased systemic corticosteroid therapy contraindicated
labeled nicotinamide cofactors widely employed biomedical investigations example delineate labeled nicotinamide cofactors widely employed biomedical investigations example delineate metabolic pathways elucidate enzymatic mechanisms substrates kinetic isotope effect kie experiments label generally located remote reactive position frequently adenine ring rising costs commercial precursors disruptions availability enzymes required established syntheses recently made preparation labeled nicotinamides nadph unviable report syntheses characterization several alternatives carbonyl nadph carbonyl nadph carbonyl nadph new procedures use carbonyl nicotinamide starting material significantly cheaper commercial precursors nadph require one commercially available enzyme prepare nad nad proximity carbonyl reactive center raises risk inopportune isotope effect concern alleviated via competitive kie measurements escherichia coli dihydrofolate reductase ecdhfr use specific carbonyl nadph combination binding isotope effect kie measurements yielded significant isotope effect amide carbonyl kie reported procedure provides high yield high purity cost effective alternative labeled nicotinamide cofactors synthesized previously published routes elsevier inc rights reserved
background recent evidence shown humans metabolize benzene efficiently environmental air concentrations concentrations ppm led speculate unidentified metabolic pathway mainly responsible benzene metabolism ambient levels objective statistically tested whether human metabolism benzene better fitted kinetic model two pathways rather one methods fit michaelis menten like models levels urinary benzene metabolites corresponding air concentrations nonsmoking chinese females estimated benzene concentrations ranged less ppm ppm percentile values ppm ppm respectively results using values akaike information criterion obtained two models found strong statistical evidence favoring two metabolic pathways respective affinities benzene air concentrations analogous values ppm low affinity pathway probably dominated cytochrome enzyme ppm high affinity pathway unknown exposure specific metabolite level predicted two pathway model nonsaturating concentrations ppm benzene value close independent estimate ppm typical nonsmoking chinese female results indicate nonsmoking woman would metabolize three times benzene ambient environment two pathway model ppm one pathway model ppm fact ambient benzene dose would metabolized via unidentified high affinity pathway conclusion regulatory risk assessments assumed nonsaturating metabolism benzene persons exposed air concentrations well ppm findings suggest true leukemia risks could substantially greater currently thought ambient levels exposure fold higher among nonsmoking females general population
among four different types thyroid cancer treatment medullary thyroid carcinoma poses major challenge propensity early metastasis investigate molecular mechanisms medullary thyroid carcinoma discover candidates targeted therapies developed new mouse model medullary thyroid carcinoma based cgrp creer mouse line system enables gene manipulation parafollicular cells thyroid purported cells origin medullary thyroid carcinoma selective inactivation tumor suppressors pten mature parafollicular cells via inducible cre recombinase cgrp creer led development murine medullary thyroid carcinoma loss pten accelerated induced medullary thyroid carcinoma indicating interactions pathways controlled tumor suppressors moreover labeling differentiated parafollicular cells cgrp creer allows follow fate malignant transformation medullary thyroid tumor findings support model mutational events differentiated parafollicular cells result medullary thyroid carcinoma expression analysis including rna seq uncovered major signaling pathways networks perturbed following removal tumor suppressors taken together studies increase molecular understanding medullary thyroid carcinoma also offer new candidates designing targeted therapies treatment modalities
homogentisic acid hga spontaneously starts undergo oxidation polymerization soon beginning incubation human blood plasma degrees forms plasma soluble melanins psm haemolysis accompanies process blood addition equimolar quantities antioxidants delays oxidation significantly isoascorbic acid glutathione penicillamine hga phenylalanine tyrosine metabolite related structurally catecholamines precursors melanins hga normally metabolized enzyme homogentisic acid oxidase enzyme genetically missing part hga excreted urine another part polymerizes darkens many tissues ochronosis produces widespread degenerative changes cartilage connective tissues joints blood vessels heart valves kidneys tissues collectively disorder known alcaptonuria satisfactory treatment known causes alcaptonuric arthritis rheumatoid arthritis thought involve increased oxidative stress inflammation joints connective tissue damage involved diseases oxygen radicals suspected cause inflammation cellular damage hydroxyl radicals degrade hyaluronic acid viscous synovial fluid joints high levels products free radical reactions fluorescence excitation emission maxima wavelength ranges psm reported blood sera synovial fluids patients rheumatoid arthritis many chemical reactivities melanin precursors catecholamines hydroxykynurenine hydroxyanthranilic acid catechol produced normal metabolic processes similar hga seems certain unrecognized activities precursors soluble melanins produce similar degenerative processes normal aging particularly chronic renal failure plasma levels soluble melanins lipofuscins rise chronic renal failure degenerative cardiovascular disease major cause death chronic renal failure alcaptonuria uncommon disorder alcaptonuria therefore calls attention broadly adverse influence soluble melanins precursors adverse effects apparently oxidative nature emphasize significance antioxidant protection normal human metabolism illness aging
new member antimicrobial protein genes crustin family cloned haemocytes chinese shrimp fenneropenaeus chinensis race full length cdna crustin like gene contains open reading frame encoding amino acids deduced peptide contains putative signal peptide amino acids mature peptide amino acids molecular mass deduced mature peptide highly cationic theoretical isoelectric point deduced amino acids sequence crustin showed high homology penaeus litopenaeas setferus northern blotting showed cloned crustin gene mainly expressed haemocytes gill intestine rna situ hybridization indicated crustin gene constitutively expressed exclusively haemocytes tissues capillary electrophoresis pcr analysis showed crustin regulated dramatically brief decrease mrna first response microbe infection level crustin mrna began restore post challenge indicated crustin gene might play important role shrimps infected bacterial pathogen
background key feature factorixa allosteric transformation enzymatically latent form potent procoagulant although several small molecules found capable partially affecting fixa function ethylene glycol low molecular weight heparin lmwh resulting modest changes peptidolytic activity made study mechanisms action challenging effects provide hints potential regulatory forces may operational full expression fixa coagulant activity description remains great interest studies crystal structures yielded insights structural changes induced effectors remains paucity information correlate given structural change specific consequences fixa function objectives correlate structural changes induced modulators defined consequences fixa substrate discrimination function methods peptidomics based mass spectrometry approach used examine patterns hydrolysis four combinatorial chemistry derived pentapeptide libraries fixa various conditions soluble active enzyme system results ethylene glycol specifically altered subsite fixa render tolerant side chains substrate position whereas enhanced tolerance subsite contrast lmwh altered subsites conclusions results demonstrate role plasticity regulating fixa function respect discrimination extended substrate sequences well providing crucial insights active site modulations may capitalized various physiologic cofactors fixa future drug design
magnesium essential mineral human metabolism second abundant intracellular cation fourth abundant human body magnesium large variety biological functions including cofactor enzymes mainly involving phosphorylation proteins nucleic acids low levels magnesium body develop different illnesses diabetes type metabolic syndrome cardiac arrhythmias muscular constriction present review shows advances analytical chemistry based sensor systems quantify concentration magnesium different biological samples plasma serum urine relevant human health
background local recurrence rate oral squamous cell cancer oscc hardly decreases partly due presence pre malignant cells remaining tissue resection may lead development new tumor time detection histologically pre malignant cells tumor resection margins predict patients risk recurrence however appears difficult routine practice purpose study apply easy use molecular tests accurate detection pre malignant cells histopathologically tumor free margins improve diagnosis patients risk methods patients firstly diagnosed radically resected primary oscc histopathologically confirmed tumor free resection margins treated included inclusion criteria comprised follow years radical surgery without postoperative treatment formalinf ixed paraffine embedded tissue sections tumors resection margins recurrences subjected fluorescence situ hybridization fish examine chromosome copy number variations cnv immunohistochemistry ihc results patients developed local recurrence within years fish analysis showed nine eleven recurrences exhibited least one resection margins overexpression routine histopathologic classification correlated recurrent disease presence resection margins revealed significantly worse progression free survival log rank conclusions resection margins oscc reliably identify patients risk developing local recurrence elsevier ltd rights reserved
aim little known molecular biology brain metastasis colorectal cancer concordance matched primary tumors materials methods identified consecutive colorectal cancer patients underwent neurosurgical resection tumor samples tested kras nras braf pikca molecular profile brain lesion compared corresponding primary tumor results molecular profile concordance rate median survival neurosurgery months median overall survival months conclusion cohort report high frequency kras mutations high concordance rate molecular status matched primary tumors
history development dna blotting described chapter dna blotting involving transfer electrophoretically separated dna fragments membrane support capillary action also known southern blotting procedure enables detection specific dna sequence hybridization probes term southern blotting led geographic naming tradition rna blotting bearing name northern blotting protein transfer membranes becoming known western blotting
interstitial lung diseases ilds heterogeneous group lung disorders distinct clinical radiological morphological features among ilds idiopathic pulmonary fibrosis ipf associated worst prognosis survival worse many cancers even advent two anti fibrotic drugs shown halve disease progression reaching correct diagnosis crucial pathogenesis prognosis treatment options differ substantially interstitial fibrosing processes immune overactivity plays role driving fibrosis however subgroup patients fibrotic lung disease mediated immune dysregulation experience relentlessly progressive fibrosis despite immunosuppressive treatment behave similarly ipf clear even non ipf ilds phenotypes relentlessly progressive disease exist molecular pathways may overlap one main challenges future use high throughput molecular biology techniques stratify patients progressive fibrotic lung disease order identify genetic epigenetic protein markers predict individual patient rate progression fundamental molecular pathways involved review focus challenges diagnosis management idiopathic pulmonary fibrosis well differences areas overlap fibrotic ilds including fibrotic hypersensitivity pneumonitis connective tissue disease associated ild interstitial pneumonia autoimmune features
chromatin immunoprecipitation followed qpcr analysis chip qpcr widely used technique study gene expression large number students molecular biology generally life sciences confronted use technique quite difficult set lead misinterpretation carefully managed article describes four session laboratory practical designed masters students introduce technique practical students work pairs extract chromatin mcf culture cells stimulated estrogens immunoprecipitate transcription factor estrogen receptor alpha using antibody directed students measure enrichment promoter dna target sequences chromatin coprecipitates qpcr two estrogen responsive genes trefoil factor one pgr progesterone receptor learn analyze chip qpcr data two methods percent input fold enrichment taught interpretation limits two calculation methods thus practical good framework depth discussion technique used study gene expression raising awareness importance careful interpretation results international union biochemistry molecular biology
migratory phenomenon portugal become one main factors genetic variability last years new class autosomal insertion deletion markers indel attracted interest forensic genetics since data indel markers portuguese speaking african countries palop immigrants living lisboa aim characterization groups individuals typing least indel markers compare different groups individuals populations studied bloodstain samples belonging immigrant individuals angola guinea bissau mozambique dna extraction performed chelex method extraction samples typed investigator dipplex method obtained results allelic frequencies show markers hardy weinberg equilibrium confirm populations show significant genetic distances host lisboa population introduce genetic variability lisboa population
advances understanding adult stem cell biology facilitated development novel cell based therapies cancer recent developments conventional therapies tumor resection techniques chemotherapy strategies radiation therapy treating metastatic primary tumors brain particularly glioblastoma resulted marked increase patient survival preclinical studies shown multiple stem cell types exhibit inherent tropism migrate sites malignancy recent studies validated feasibility potential using engineered stem cells therapeutic agents target eliminate malignant tumor cells brain review discuss recent progress therapeutic potential stem cells tumors brain also provide perspectives future preclinical studies clinical translation
murine full thickness skin transplantation well established vivo model study alloimmune response graft rejection despite limited application humans skin transplantation mice widely employed transplantation research procedure easy learn perform require delicate microsurgical techniques extensive training moreover graft rejection model occurs reproducible immunological reaction easily monitored direct inspection palpation addition secondary skin transplantation donor matched third party skin grafts performed complex transplant models alternative uncomplicated method assess donor specific tolerance complications low general limited anesthesia overdose respiratory distress procedure graft failure hand occurs commonly result poor preparation graft incorrect positioning graft bed inappropriate placement bandage article present protocol full thickness skin transplantation mice describe important steps necessary successful procedure
purpose review one important challenges intestinal itx multivisceral transplant mvtx achieve successful abdominal wall closure recent findings tension free primary closure aim cases need perform component separation technique alone combined use synthetic mesh options feasible abdominal wall composite vascularized allograft transplant cva utilizing direct orthotopic vascularization considered nonvascularized abdominal rectus fascia also become alternative method used worldwide proving simple well tolerated procedure furthermore use recently proposed new tool sentinel monitoring intestinal pancreas allograft summary different validated options abdominal wall closure following intestinal transplantation long term benefits transplanting abdominal wall full partial thickness vascularized nonvascularised shown new developments might help expand applications different areas reconstructive surgery immunology
ghugp cotton uridine diphosphate glucose pyrophosphorylase one highly expressed genes proteins fast elongation cotton fibres objective study determine whether fibre quality reduced sugar content could improved fibres expressing ghugp cotton plants conditions low autumn temperatures large diurnal temperature differences plant ghugp vector constructed introduced cotton line using agrobacterium mediated transformation following selection kanamycin sulphate polymerase chain reaction pcr southern blotting analyses three independent homozygous transgenic lines selected molecular chemical study compared wild type transcriptional activity ghugp higher long lasting transgenic lines fibres longer stronger soluble reduced sugar levels significantly decreased cellulose levels significantly increased addition plant height also increased results demonstrate ghugp expression considerably increased transgenic plants accelerating conversion oligosaccharides polysaccharides developing cotton fibre
plant defensins group small cysteine stabilized antimicrobial peptides rich basic amino acids inhibit growth multitude phytopathogens defensins explored widely generate transgenic crop plants resistant varied fungal bacterial diseases present study gene sequence coding seed defensin amp common chickweed stellaria media synthesized artificially cloned downstream strong constitutive promoter pcambia plant expression vector transgenic banana plants expressing amp gene subsequently generated via agrobacterium mediated genetic transformation transgenic nature regenerated banana plants confirmed genomic dna pcr southern blotting analysis northern blots demonstrated efficient expression amp mrna transgenic banana plants two selected transgenic lines challenged pathogenic isolate fusarium oxysporum cubense race showed improved resistance compared untransformed control banana plants transgenic lines continued show resistance foc race months post infection study demonstrates overexpression potent plant defensins amp important food crops like banana lead development durable resistance fungal pathogens
expression antigens transgenic plants increasingly used alternative classical methodologies development experimental vaccines remains one real challenges field use transgenic plant based vaccines effectively feedstuff additives report herein development new oral immunization system foot mouth disease structural protein foot mouth disease virus fmdv produced transgenic stylosanthes guianensis reyan transgenic plantlets identified polymerase chain reaction pcr southern blotting northern blotting production protein transgenic plants confirmed quantified western blotting enzyme linked immunosorbent assays elisa six transformed lines obtained level expressed protein total soluble protein tsp mice orally immunized using studded feedstuff mixed desiccated powder transgenic plants developed virus specific immune response structural intact fmdv particles knowledge first report transgenic plants expressing antigen protein fmdv feedstuff additives demonstrated induction protective systemic antibody response animals results support feasibility producing edible vaccines transgenic forage plants provide proof possibility using plant based vaccines feedstuff additives
previous studies reported lipoxin lxa may exert renoprotective effect ischemia reperfusion injury various animal models underlying mechanism lxa induced renoprotection ischemia reperfusion injury remains elucidated present study investigated lxa induced protection renal tubular cells subjected hypoxia reoxygenation injury determined effects peroxisome proliferator activated receptor gamma ppar gamma heme oxygenase lxa treatment human tubular epithelial cells exposed injury pretreated lxa signal molecule inhibitors inhibitor zinc protoporphyrin transfected ppar small interfering rna sirna nuclear factor related factor nrf sirna protein mrna expression levels ppar analyzed using western blotting reverse transcription quantitative polymerase chain reaction binding activity nrf enhancer determined using chromatin immunoprecipitation nrf binding antioxidant responsive element assessed using electrophoretic mobility shift assay preincubation cells lxa exposed injury led decreased production inducible nitrogen oxide synthase malondialdehyde gamma glutamyl transpeptidase leucine aminopeptidase acetyl gamma glucosaminidase addition lxa pretreatment increased cell viability protein mrna expression levels ppar ppar promoter activity mitogen activated protein kinase mapk pathway inhibitor reduced lxa induced ppar expression levels lxa treatment upregulated mapk activation nrf nuclear translocation increased binding activity nrf enhancer cells exposed injury transfection thecells ppar gamma sirna reduced lxa induced nrf translocation transfection cells ppar sirna nrf sirna also reduced lxa induced increase expression conclusion lxa induced protection renal tubular cells injury associated induction ppar via activation mapk pathway well nrf nuclear translocation binding enhancer therefore lxa induced renoprotection associated activation mapk ppar gamma nrf pathway
purpose evaluate expression egfr kras genes micrornas colon rectal cancer samples correlated age diagnosis histological subtype value pretreatment cea tnm staging clinical outcome methods expression genes micrornas real time pcr tumor non tumor samples obtained surgical treatment patients results increased expression micrornas tumor samples relation non tumor samples found statistically significant difference expression genes micrornas compared age diagnosis histological subtype egfr gene showed higher expression relation value cea diagnosis expression microrna progressively lower relation tnm staging higher patient group clinical remission conclusions therapy colon rectum tumors based micrornas remains investigation reserving huge potential future applications clinical interventions conjunction existing therapies expect based exposed data stimulate development new therapeutic possibilities making treatment tumors effective
enhance antifungal potential grapevine transgenic plants generated transferring rice chitinase gene maize ubiquitin promoter along first intron leaf disc induced somatic embryos via agrobacterium mediated transformation cultivation days recombinant agrobacterium somatic embryos transferred onto wpm medium containing bap naa supplemented hygromycin secondary tertiary embryos selected antibiotic resistant transgenic plantlets analyzed integration stability transgene confirmed pcr pcr southern blotting western blot analyses transgenic plants exhibited higher chitinase activity non transformed plants analyses indicated foreign gene translated protein expected molecular weight showed chitinase activity following vitro inoculation powdery mildew uncinula necator transgenic plants showed delayed onset disease smaller lesions transgenic plants adapted greenhouse show phenotypic alterations
given citrates healthy male volunteer intravenous injection retention tracers studied body radioactivity measurement levels blood excreta determined gamma ray spectrometry accelerator mass spectrometry half left blood min decline continued leaving blood losses occurred renal excretion uptake compartments estimated excretion urine faeces whole body retention declined similar daily reduction corresponded biological half life suggesting sustained intake dietary aluminium may lead progressively increasing internal deposit metabolism differed markedly aspects studied
background mutations human mitochondrial dna polymerase pol linked diseases varying severity age onset results yeast cells expressing human pol reveal correlation pol fidelity human disease onset conclusion humanized yeast provides efficient system correlate biochemical defects pol physiological consequences significance pol associated diseases may caused low accuracy pol mutants low rates replication mutations human mitochondrial polymerase polymerase pol associated various mitochondrial disorders including mitochondrial dna mtdna depletion syndrome alpers syndrome progressive external opthamalplegia correlate biochemically quantifiable defects resulting point mutations pol physiological consequences created humanized yeast replacing yeast mtdna polymerase mip human pol despite differences replication repair mechanism show human polymerase efficiently complements yeast mip knockouts suggesting common fundamental mechanisms replication conserved interactions human polymerase components replisome also examined effects four disease related point mutations exonuclease deficient mutant haploid cells mutant results rapid mtdna depletion increased mutation frequency mitochondrial dysfunction mutation frequencies measured vivo equal measured purified enzyme vitro heterozygous diploid cells wild type pol suppresses mutation associated growth defects continuous growth eventually leads aerobic respiration defects reduced mtdna content depolarized mitochondrial membranes severity pol mutant phenotype heterozygous diploid humanized yeast correlates approximate age disease onset severity symptoms observed humans
dystonia musculorum inherited autosomal recessive neuropathy mice homozygous animals display primarily sensory neuro degeneration resulting severe loss coordination several strains exist including spontaneous mutants alb albany jackson labs frk frankel transgene insertion mutant contain mutations gene encoding bullous pemphigoid antigen bpag dystonin bpag member plakin family cytolinker proteins bpag alternatively spliced produce several isoforms including major brain specific isoform bpaga neurological phenotype observed alb mice thought result absence bpaga protein developing nervous system goal study determine precise molecular nature alb mutation examine residual bpag expression homozygous alb mice combination molecular biological strategies revealed alb lesion deletion insertion eliminating large part coding region bpaga molecular lesion alb bpag allele expected render completely non functional although transcripts corresponding bpag segments still remaining homozygous alb mice could detected pcr positive signal bpag brain alb mice northern blotting western blotting polyclonal anti bpag antibodies confirmed absence functional bpag protein full length truncated alb brain identification junction alb insertion makes possible genotype alb animals standard pcr elsevier rights reserved
objective adipocytes robust protein secretors notably adipokines hormone like polypeptides act endocrine paracrine fashion affect numerous physiological processes energy balance insulin sensitivity understand proteins assembled secretion describe function novel endoplasmic reticulum oxidoreductase adiporedoxin adrx methods adrx knockdown overexpressing murine adipocyte cell lines knockout mouse model used assess influence adrx secreted proteins well redox state resident chaperones metabolic phenotypes adrx null mice characterized compared mice correlation adrx levels bmi adiponectin levels inflammatory markers adipose tissue human subjects also studied results adiporedoxin functions via cxxc active site upstream protein disulfide isomerase whose direct function disulfide bond formation ultimately protein secretion expression adrx vitro enhances reduces respectively secretion disulfide bonded proteins including adiponectin collagen isoforms chow diet adrx null mice normal body weights glucose tolerance moderately hyperinsulinemic reduced levels circulating adiponectin virtually free adipocyte fibrosis resulting complex phenotype tending towards insulin resistance adrx protein levels human adipose tissue correlate positively adiponectin levels negatively inflammatory marker phospho jun kinase conclusion data support notion adrx plays critical role adipocyte biology regulation mouse human metabolism via modulation adipocyte protein secretion authors published elsevier gmbh
since butadiene suspected human carcinogen exposure minimised controlled study aimed comparing suitability biomarkers low levels exposure exploration relative pathways human metabolism comparison experimental animals potentially sensitive biomarkers urinary metabolites dihydroxybutyl mercapturic acid dhbma also referred monohydroxy butenyl mercapturic acid mhbma also referred mii haemoglobin adducts hydroxy butenyl valine mhbval two field studies workers airborne mhbma dhbma mhbval determined mhbma proved sensitive dhbma monitoring recent exposures could measure time weighted average exposures low ppm sensitivity dhbma restricted relatively high natural background levels urine origin currently unknown mhbval proved sensitive method monitoring cumulative exposures ppm statistically significant relationships found either mhbma dhbma airborne levels mhbval adducts average airborne levels days data showed much higher rate hydrolytic metabolism humans compared animals reflected much higher dhbma mhbma dhbma ratio much lower levels mhbval humans confirming vitro results assuming genotoxic mechanism data study coupled recent data dna binding rodents suggest cancer risk humans exposure less rat much less mouse elsevier science ireland ltd rights reserved
chimeric mice constructed transplanting human hepatocytes useful predicting human metabolism drug candidates study investigated whether mice show similar metabolic profile humans examining hydroxylation warfarin reported mainly metabolized hydroxywarfarin warfarin catalyzed cypc humans warfarin administered chimeric mice control upa scidwt mice blood concentration time curve higher chimeric control mice plasma protein binding warfarin chimeric control mice amounted respectively warfarin administered mice radioactivity mainly recovered urine chimeric mice control mice warfarin administered mice radioactivity recovered bile chimeric control mice respectively main urinary metabolite chimeric mice warfarin main urinary metabolite control mice hydroxywarfarin results show mass balance metabolic disposition warfarin chimeric mice humanized liver similar reported human data
gram negative bacteria possess characteristic outer membrane lipid constituent elicits strong host immune response toll like receptor complex acts component permeability barrier prevent uptake bactericidal compounds lipid species comprise bulk outer leaflet outer membrane produced multistep biosynthetic pathway conserved gram negative bacteria final steps pathway involve secondary acylation lipid precursors catalyzed members superfamily enzymes known lysophospholipid acyltransferases lplats present domains life play important roles diverse biological processes date characterization clinically important class enzymes limited lack structural information availability low throughput biochemical assays work present structure bacterial lplat protein lpxm describe high throughput label free mass spectrometric assay characterize acyltransferase enzymatic activity using structure assay identify lplat thioesterase activity provide experimental evidence support ordered binding reset mechanistic model lpxm function work enables interrogation bacterial acyltransferases structure mechanism relationships assay described herein provides foundation quantitatively characterizing enzymology number clinically relevant lplat proteins
existence darier disease acrokeratosis verruciformis hopf akv noted decades relationship entities remains controversial although shown diseases associated mutations atpa gene yet determined disease separate allelic interlinked fashion herein authors report case year old girl presenting shiny flat topped verruca plana like papules dorsal hands feet red brown crusted papules forehead along sides neck histological evaluation wart like lesion shows features akv verruca plana like histopathology focal acantholytic dyskeratosis forehead biopsy also demonstrated focal acantholytic dyskeratosis supporting diagnosis polymerase chain reaction human papillomavirus hpv dna detected hpv human betapapillomavirus verruca plana like papule cytoplasmic expression capsid expression seen areas hypergranulosis presence productive betapv infection setting akv suggests susceptibility hpv infection
background seasonal influenza responsible high annual morbidity mortality worldwide especially elderly patients aim study analyse epidemiological clinical prognostic features influenza octogenarians nonagenarians admitted general hospital well risk factors associated mortality methods retrospective cross sectional descriptive study patients admitted diagnosed influenza molecular biology general university hospital alicante january april results total patients diagnosed influenza study period years flu episodes caused influenza patients aged years older lower glomerular filtration rate mean min min greater need non invasive mechanical ventilation greater morbidity due cardiac insufficiency chronic renal disease greater mortality multivariate analysis mortality higher aged adjusted odds ratio ora confidence interval acquired flu long term care facility ora hyperlactataemia ora conclusions seasonal influenza serious problem leading elevated mortality octogenarian nonagenarian patients admitted general hospital
methylation histone lysine conserved epigenetic mark regulating gene transcription alternative splicing dna repair genes encoding methyltransferases kmtases commonly overexpressed mutated involved chromosomal translocations cancer molecular biology studies demonstrated kmtases regulate oncogenic transcriptional programs structural studies catalytic set domain kmtases revealed intriguing opportunities design small molecule inhibitors nevertheless potent inhibitors kmtases yet developed underlining challenges associated target class strong evidence linking kmtases cancer drug development efforts predicted yield novel compounds near future
patients cell hematologic malignancies progress first second line chemotherapy poor prognosis early clinical trials autologous anti chimeric antigen receptor car cells demonstrated promising results patients relapsed refractory disease lymphodepleting conditioning regimens including cyclophosphamide fludarabine pentostatin bendamustine interleukin total body irradiation often administered infusion car cells allowing greater cell expansion major toxicity associated car cell infusions cytokine release syndrome crs potentially life threatening systemic inflammatory disorder quick onset progression crs require rapid detection intervention reduce treatment related mortality management tocilizumab help ameliorate symptoms severe crs allowing steroids diminish expansion persistence car cells reserved tocilizumab refractory patients toxicities car cell therapy include neutropenia febrile neutropenia infection tumor lysis syndrome neurotoxicity nausea vomiting review patients medications imperative eliminate medications may contribute treatment related toxicities studies ongoing help optimize patient selection preparation safety management individuals receiving car cells long term follow help establish place car cells therapy
cre loxp site specific recombination system applied aurantiochytrium limacinum obtain transformant without antibiotic resistance marker gene first enhanced green fluorescent protein gene egfp chloramphenicol resistance gene along two loxp loci integrated genome limacinum ouc using rdna sequences homologous recombination sites plasmid psh containing zeocin resistance gene ble transferred limacinum ouc induction galactose repeated passage culture pcr based assessment psh plasmid lost limacinum ouc host shown longer resistance chloramphenicol zeocin southern blotting fluorescence detection egfp found integrated genome limacinum ouc egfp successfully expressed cells successful application cre loxp system demonstrates experimental basis genetic modification limacinum obtain transformed strains antibiotic resistance marker genes
pyrethroid chemicals attractive alternatives organophosphates ops selective toxicity pests rather mammals carboxylesterases ces hepatic enzymes metabolize ester containing xenobiotics pyrethroids primary aim study gain insight catalytic properties enzymes humans metabolize pyrethroids secondary aim investigate pyrethroid metabolism using ces mammalian species pure human ces hce hce rabbit rce two rat ces hydrolases used study hydrolytic metabolism following pyrethroids trans resmethrin bioresmethrin trans permethrin cis permethrin hce hce hydrolyzed trans permethrin fold efficiently cis permethrin cat values compared respectively contrast hydrolysis bioresmethrin catalyzed efficiently hce hce kinetic parameters pure rat rabbit ces qualitatively similar human ces hydrolysis rates investigated pyrethroids evaluated comparison pyrethroid hydrolysis hepatic microsomes rats mice humans indicated rates compound similar species supports use rodent models pyrethroid metabolism studies eight fold range hydrolytic rates individual human liver samples toward transpermethrin also found although variability related levels hce protein sample also determined inhibitor chloro dimethoxybenzil blocked hce catalyzed trans permethrin hydrolysis times potently hce thus inhibitor useful future studies examine mediated metabolism pyrethroids likely esterases human liver hydrolyze pyrethroids results study clearly demonstrate hce hce human pyrethroid hydrolyzing ces elsevier inc rights reserved
cholangiocarcinoma cca second common primary malignancy although common asia incidence europe north america significantly increased recent decades prognosis cca dismal surgery potentially curative treatment majority patients present advanced stage disease recurrence resection common last two decades understanding molecular biology malignancy increased tremendously diagnostic techniques evolved novel therapeutic approaches established review discusses changing epidemiologic trends provides overview newly identified etiologic risk factors cca furthermore molecular pathogenesis discussed well influence etiology biliary location mutational landscape cca review provides overview diagnostic evaluation cca staging systems finally new therapeutic options critically reviewed future therapeutic strategies discussed
mycobacterium tuberculosis produces dideoxymy cobactin ddm lipopeptide potently activates cells upon binding mhc like antigen presenting molecule cda tuberculosis produces ddm trace amounts previous solid phase synthesis provided sub milligram quantities describe high yielding solution phase synthesis ddm features mitsunobu substitution avoids yield limiting epimerization lysine esterification amidation conditions prevent double bond isomerization acyl chain provides material equivalent antigenicity natural ddm isomers ddm varied stereochemistry central lysine acyl chain compared ability recognised cda restricted cell receptors tcrs tcrs derived unrelated human donors exhibited similar spectrum reactivity towards panel ddm isomers highlighting exquisite sensitivity lipopeptide reactive cells natural ddm stereochemistry
multiplex reverse transcription polymerase chain reaction pcr based assays involving fluorescent dye labeled primers modified detect types gastroenteritis viruses adding two assays previously developed assay assays applied clinical samples collected january december types viruses effectively detected multiplex pcr based assays addition various viral parameters detection rates age distributions viral type examined frequency types mixed infections also investigated among virus positive samples genogroup noroviruses found common type virus followed group rotaviruses parechoviruses mixed infections observed samples many detected patients less years old observations showed multiplex pcr based assays involving fluorescent dye labeled primers able effectively detect viruses circulating among pediatric acute gastroenteritis patients contributed highly specific sensitive diagnosis gastroenteritis wiley periodicals inc
congenital heart disease common birth defect major advances medical surgical management adults living congenital heart disease chd children recently cause majority chd unknown advances genomic technologies discovered genetic causes significant fraction chd time pointing remarkable complexity chd genetics review focus evidence genetic causes underlying chd discuss data supporting monogenic complex genetic mechanisms underlying chd discoveries chd genetic studies draw attention biological pathways simultaneously open door better understanding cardiac development affect clinical care patients chd finally address clinical genetic evaluation patients families affected chd
history biochemistry molecular biology replete examples erroneous theories persisted considerable lengths time rejected paper examines patterns dissolution three erroneous hypotheses idea nucleic acids tetrads four nucleobases tetranucleotide hypothesis notion proteins collinear encoding genes branches life hypothesis proteins synthesized reverse action proteolytic enzymes analysis cases indicates amassed contradictory empirical findings prompt critical experimental testing prevailing theories elicit alternative hypotheses rather incorrect models collapsed experiments purposely designed test validity exposed new facts
background periodontitis chronic inflammatory disease initiated bacteria virulence factors bortezomib btz first proteasome inhibitor clinical treatment malignancies anticancer activity accompanied anti inflammatory effect however reports anti inflammatory effect underlying mechanism periodontal disease especially human periodontal ligament cells hpdlcs considered promising cell based therapy treating periodontitis methods hpdlcs treated lipopolysaccharide lps pre treated btz mrna protein levels tumor necrosis factor tnf alpha interleukin beta determined anti inflammatory mechanism btz studied experimental rat periodontitis induced ligature lps injection simultaneously locally treated btz three injections week four weeks treatment microcomputed tomography immunohistochemical histopathologic analyses performed results bortezomib administration safe concentrations inhibited production proinflammatory cytokines lps stimulated hpdlcs via nuclear factor kappa extracellular signal regulated kinase mitogen activated protein kinase activator protein pathways moreover lps ligature induced periodontitis rat model btz suppressed expression tnf alpha beta reduced ratio receptor activator kappa ligand osteoprotegerin prevented alveolar bone absorption conclusion findings demonstrate anti inflammatory activity btz periodontal inflammatory response present btz promising therapy periodontal disease
identifying parasitized nests eggs prerequisite studying conspecific brood parasitism previous studies effectiveness egg morphology identify parasitic eggs different species produced mixed results brood parasitism egg measurements length width weight monitored common coot fulica atra nests maximum euclidean distance calculated nest results indicated maximum euclidean distance values non parasitized parasitized nests significantly different optimal split value recursive partitioning analysis common coot nests identify non parasitized parasitized nests successfully however dissimilar egg parasitized nests calculated maximum average euclidean distance identified parasitic eggs correctly egg morphology effective detecting conspecific brood parasitism common coot nests accurate enough determine parasitic eggs result method used caution combined observational molecular biology methods
background novel therapies men castration resistant prostate cancer crpc needed particularly cancers driven androgen receptor activation objectives identify molecular subgroups bone metastases relevance therapy design setting participants fresh frozen bone metastasis samples men crpc treatment nai malignancies characterized using whole genome expression profiling multivariate principal component analysis pca functional enrichment analysis expression profiles verified reverse transcription polymerase chain reaction pcr extended set bone metastases compared levels malignant adjacent benign prostate tissue patients localized disease selected proteins evaluated using immunohistochemistry cohort patients diagnosed transurethral resection long follow used prognostic evaluation results limitations majority crpc bone metastases defined driven based pca analysis high expression regulators foxa hoxb regulated genes klk klk nkx steap tmprss non driven functional enrichment analysis indicated high metabolic activity low immune responses driven metastases accordingly infiltration cells lower driven non driven metastases tumor cell hla class abc immunoreactivity inversely correlated nuclear immunoreactivity pcr analysis showed low mhc class expression hla tap psmb mrna bone metastases compared benign malignant prostate tissue bone metastases origins primary low hla class abc immunoreactivity associated high gleason score bone metastasis short cancer specific survival limitations include limited number patients studied single metastasis sample studied per patient conclusions crpc bone metastases show high metabolic activities low immune responses subgroup instead shows low metabolic activities high immune responses targeted therapy groups explored patient summary studied heterogeneities molecular level bone metastasis samples obtained men castration resistant prostate cancer found differences possible importance therapy selection individual patients european association urology published elsevier
objective compare outcomes percutaneous nephrolithotomy pcnl immunocompromised patients pcnl healthy population patients methods matched case control study performed january december using prospectively collected kidney stone database patients positive serology human immunodeficiency virus hiv hepatitis cellular immune dysfunction patients high dose immunosuppressive drugs treatment autoimmune diseases composed case group control group included patients kidney stones comorbidity patients randomly matched based guy score surrogate case complexity results sixty two patients enrolled study cases controls significant differences age gender body mass index groups regarding pcnl technique differences patient positioning number accesses operative time complication rate higher case group however major complications defined clavien score statistically different tendency postoperative urinary tract infection case group mean decrease hemoglobin level blood transfusion rate significantly higher case group immunocompromised patients fold increased risk complications odds ratio confidence interval fold increased risk blood transfusion differences stone free rate nephrostomy tube time length hospital stay conclusion immunocompromised patients higher risk complications bleeding pcnl
mechanism long term cell immunity donor blood group antigens recipients undergo abo incompatible aboi living donor kidney transplantation lktx unknown address question evaluated serial anti anti antibody titers adult recipients donor specific antibody titers remained low recipients however antibodies nondonor blood group antigens continuously produced recipients blood type stimulated recipients peripheral blood mononuclear cells invitro investigate whether cells produced antibodies donor blood group antigens absence graft adsorption invivo antibodies cell culture supernatant measured using specific enzyme linked immunosorbent assays elisas thirty five healthy volunteers recipients underwent abo compatible lktx served controls antibody production invitro donor blood group antigens cells aboi lktx patients lower control groups immunoglobulin deposits undetectable biopsies grafts eight recipients low antibody titers aboi lktx one patient blood type received second aboi lktx type donor produce specific antibodies findings suggest diminished donor specific antibody production function setting adult aboi lktx setting abo incompatible kidney transplantation recipients may acquire donor specific downregulation antibody production abo blood group antigens
porcine cflb gene play important role muscle development myofibrillar formation pig explore whether cflb expression affects muscle fiber trait porcine cflb full length cdna amplified using homology based cdna cloning smart race full length cdna porcine cflb inserted pegfp transfected cells cells stably expressing cflb selected examined expression myhc myhc myhc slow cells stably expressing cflb results showed level myhc myhc mrna dramatically increased compared control cells level myhc slow mrna changed identify transcription events cflb porcine cflb mrna detected northern blotting two transcripts long transcript short transcript found porcine skeletal muscles nucleotide sequence cflb shares homology cflb gene human mouse deduced amino acid sequence cflb amino acids pig shares identity cflb human mouse respectively taken together research revealed porcine cflb may involved regulation muscle fiber trait affecting expression myhc
article shows lamarckism essential birth french school molecular biology argue concept inheritance acquired characters positively shaped debates surrounding bacteriophagy lysogeny pasteurian tradition interwar period period typical lamarckian account heredity treated continuation protoplasmic physiology daughter cells lix relle applied conception argue one species bacteriophage jules bordet applied develop account bacteriophagy transmissible form autolysis analyze new phenomenon lysogeny long standing controversy bordet eugsne wollman deployed morphological understanding inheritance acquired characters yielding particulate still lamarckian account lysogeny turn andr lwoff several colleagues completed wollman research program examine gradually set aside lamarckian background finally removing inheritance acquired characters resulting account bacteriophagy lysogeny conclusion emphasize complex dual role lamarckism moved assumed explanatory framework challenge nascent molecular biology overcome
charge variants namely acidic basic variants typically found mab therapeutics charge heterogeneity typically regarded affect safety efficacy product result commonly followed approach involves assignment specification variants based statistical analysis variability levels seen commercial manufacturing followed monitoring product quality demonstrate consistency paper aims demonstrate perception charge variants warrants depth investigation evaluate role charge variants play safety efficacy mab therapeutic addition novel procedure suggested making assessment alleviate problems traditionally faced isolating variants characterization suggested procedure utilizes principles bioseparations cell biology statistics demonstrated significantly efficient approach practiced today
aims ubiquitination proteins meant elimination primary method eukaryotic cellular protein degradation ubiquitin carrier protein epf key degradation enzyme highly expressed many tumors however expression prognostic significance brain glioma still unclear aim study reveal level epf relates prognosis brain glioma methods thirty low grade high grade brain glioma samples divided two tissue microarrays levels epf protein examined immunohistochemistry immunofluorescence quantitative real time polymerase chain reaction used analyze level epf glioma normal brain tissue samples relationship epf levels prognosis analyzed kaplan meier survival curves results epf levels low normal brain tissue samples high glioma nuclei epf levels gradually increased glioma grade increased ectopic epf levels high grade glioma significantly higher low grade glioma year survival rate glioma patients high epf levels shorter patients low expression furthermore year survival rate patients ectopic epf significantly shorter patients nuclear epf conclusions results suggest higher epf levels especially ectopic associated higher grade glioma shorter survival epf levels may play key role predicting prognosis patients brain glioma
paper describes introduction synchrotron based macromolecular crystallography undergraduate laboratory class introductory week experimental module consisting four laboratory sessions two classroom lectures incorporated senior level biochemistry class focused survey biochemical techniques including experimental characterization proteins students purified recombinant protein samples set crystallization plates flash cooled crystals shipping synchrotron students collected ray diffraction data sets crystals via remote interface molecular biology consortium beamline advanced light source berkeley usa processed diffraction data sets transferred back laboratory used conjunction partial protein models provided students refinement model building laboratory component supplemented lectures faculty expertise module easily adapted implementation similar undergraduate classes assuming availability local crystallographic expertise access remote data collection synchrotron source
brachypodium distachyon new model plant cereal crops gliadin class wheat storage proteins related wheat quality attributes published distachyon genome sequence databases gliadin gene found current study number gliadin genes distachyon isolated contradictory results genome sequencing projects study distachyon seeds found gliadin protein expression gel electrophoresis reversed phase high performance liquid chromatography western blotting analysis however southern blotting revealed presence ten copies alpha gliadin coding genes distachyon means pcr amplification four novel full orf alpha gliadin genes pseudogenes least one stop codon well promoter regions cloned sequenced different brachypodium accessions sequence analysis revealed single nucleotide polymorphisms among genes pseudogenes resulted change leading generation tag taa frame stop codon compare full orfs pseudogenes among triticum triticum related species structural characteristics analyzed based four cell stimulatory toxic epitopes two ployglutamine domains aegilops triticum brachypodium species found closely related phylogenetic analysis revealed distachyon closely related aegilops tauschii aegilops umbellulata genome triticum aestivum alpha gliadin genes able express successfully coli using functional promoter relative absolute quantification transcripts alpha gliadin genes wheat much higher distachyon abundant pseudogenes may affect transcriptional posttranscriptional level alpha gliadin distachyon
background protein protein interactions ppis offer compelling evidence protein function especially viewed context proteome wide interactomes bacteria popular subjects interactome studies six different bacterial species subjects comprehensive interactome studies several substantial segments proteomes screened interactions protein interactomes several bacterial species completed including several prominent human pathogens availability interactome data brought challenges large data sets difficult compare across species limiting usefulness broad studies microbial genetics evolution results study use unique protein protein interactions ppis across different bacterial species strains determine conservation across data sets taxonomic groups proteins collapsed orthologous groups ogs resulting meta interactome still includes interactions involve proteins unknown function conserved interactions provide support protein function respective species data found ppis similar available data conserved two species rendering cross species interactome comparison immediately useful meta interactome serves model predicting interactions protein functions even full interactome sizes species limited experimentally observed ppi including bacillus subtilis salmonella enterica predicted ppis respectively conclusions course work assembled cross species interactome comparisons allow interactomics researchers anticipate structures yet unexplored microbial interactomes focus well conserved yet uncharacterized interactors study conserved interactions provide evidence important yet uncharacterized aspects bacterial physiology may provide targets anti microbial therapies
background polybutylene succinate pbsu pbsu beta tricalcium phosphate tcp composites biocompatible good candidates bone graft materials however little known responses lymphocytes biomaterials play important role success bone grafting methods activated lymphocytes cultured onto diameter films pbsu tcp films previously placed well culture plates hours plastic well culture plate used control surface effects pbsu based biomaterials lymphocytes examined using flow cytometry reversetranscription polymerase chain reaction resultlts biomaterials non toxic lymphocytes allowing normal dna synthesis activation materials induced transient activation lymphocytes existed longer hours proportions four main lymphocyte subpopulations affected biomaterials moreover pbsu pbsu tcp significantly suppressed expression beta genes respectively contrast pbsu tcp composite pbsu tcp significantly stimulated expression genes respectively conclusions pbsu pbsu tcp composites non toxic lymphocytes induce unfavorable responses lymphocytes tested biomaterials regulated key proinflammatory cytokine genes regulated anti inflammatory cytokine genes lymphocytes suggest biomaterials studied good candidates bone graft materials
effects reactive oxygen species ros cell growth poly glutamic acid pga synthesis studied adding hydrogen peroxide medium bacillus subtilis optimizing addition concentration time maximum concentration pga obtained adding medium concentration higher control addition diphenyleneiodonium chloride ros inhibitor interdict effect induced ros transcriptional levels cofactors relevant genes also determined ros stress illustrate possible metabolic mechanism contributing improve pga production transcriptional levels genes belonging tricarboxylic acid cycle electron transfer chain system significantly increased ros decreased nadh nad ratio increased atp levels thereby providing reducing power energy pga biosynthesis enhanced pga synthetic genes also directly promoted formation pga study first use ros control strategy pga fermentation provided valuable information possible mechanism ros regulated pga biosynthesis subtilis international union biochemistry molecular biology inc
two principal types human vivo studies non pharmaceuticals distinguished human metabolism studies used identification target metabolites subsequently used biological monitoring studies furthermore allow extrapolation excretion metabolite exposure parent compound basis understanding human pharmacokinetics pharmacodynamic effect studies restricted study acute inherently reversible changes likely improve risk assessment following areas neurobehavioural effects alcohol organic solvents alterations biochemical markers cholinesterase inhibition following organophosphate exposure topical effects skin irritancy ethical considerations prime importance minimum human study must comply principles declaration helsinki protocol include scientifically sound objectives justification subject numbers formal risk benefit analysis provisions appropriate ethical review welfare individual participating study must paramount informed consent obtained subjects must free withdraw study time compensation given inconvenience participating study never undergoing risk provided conditions met human volunteer studies powerful tool risk assessment risk management exposure non pharmaceutical products elsevier science ireland ltd rights reserved
background lung cancer leading cause brain metastases identification driver oncogenes matched targeted therapies improved outcome non small cell lung cancer nsclc patients however better understanding molecular biology needed drive process field methods observational study stage nsclc patients tested egfr kras mutations selected incidence recurrence patients outcome assessed results total patients caucasian two asian selected including egfr mutant kras mutant tumors patients developed incidence frequent patients egfr mutation according multivariate analyses mva odds ratio among patients treated recurrence local treatment less frequent patients kras mutation among patients untreated overall survival shorter patients kras mutation according univariate analysis mva conclusions egfr kras mutations predictive role incidence recurrence outcome caucasian nsclc patients results may impact routine management disease patients studies required assess influence biomarkers nsclc
specific sensitive conventional real time pcr assays developed detection quantification rhizoctonia solani populations infecting pulses five different sets solani specific molecular primers arsf arsf arsf arsf arsf designed internal transcribed spacer sequences solani isolates associated pulse crops representing anastomosis groups designed primers yielded variable amplicons ranging specific solani populations markers proved highly sensitive solani able detect pathogen mycelium infected mung bean plants various concentrations genomic dna ranging using conventional pcr markers also found suitable real time pcr assay enhanced sensitivity genomic dna efficacy markers early detection solani infection mung bean plants also tested marker arsf sensitive detecting pathogen artificial inoculation field artificial inoculation vitro conditions radioactive fluorescein amidite labelled probes markers arsf arsf designed tested cross reactivity sensitivity southern blotting real time pcr analyses respectively probes proved highly sensitive specific solani quantitative pcr probe based diagnostics developed solani detection pulses
evolution melanoma primary tumor widespread metastasis crucially dependent lymphatic spread mechanisms regulating initial step metastatic dissemination via regional lymph nodes remain largely unknown however evidence supporting establishment pre metastatic niche evolving previously described dysfunctional immune profile including reduced expression dendritic cell maturation markers first node draining primary tumor sentinel lymph node sln importantly phenotype present prior evidence nodal metastasis herein evaluate melanoma derived extracellular vesicles evs potential mediators premetastatic niche cargo specific polarization dcs dcs matured vitro presence melanoma evs demonstrated significantly impaired expression well decreased expression polarizing chemokines fitl migration chemokines mip alpha mip beta compared liposome treated dcs profiling melanoma cargo identified shared proteomic rna signatures including protein cargo vitro compromised maturation similar melanoma evs early evidence demonstrates similar evs isolated human afferent lymphatic fluid vivo taken together propose melanoma cargo mechanism maturation compromised warranting study consider potential mechanism enabled primary tumor establish premetastatic niche tumor draining slns patients
green peach aphid myzus persicae sulzer hemiptera aphididae important cosmopolitan pest real time qrt pcr used target gene expression analysis persicae using real time qrt pcr expression levels normalized basis reliable reference genes however date stability available reference genes insufficient study evaluated nine candidate reference genes persicae diverse experimental conditions tested candidate genes comprehensively ranked based five alternative methods reffinder genorm normfinder bestkeeper comparative delta method actin ribosomal protein recommended stable reference genes persicae whereas ribosomal protein found least stable reference genes abiotic studies photoperiod temperature insecticide susceptibility finding sheds light establishing accurate reliable normalization real time qrt pcr data persicae also lays solid foundation studies persicae involving rna interference functional gene research
background previous studies authors demonstrated fibronectin derived oligopeptide termed stimulates osteoblast differentiation vitro bone formation vivo however fundamental molecular mechanism stimulates osteogenesis remains unknown therefore study molecular mechanism underlying effect osteoblast differentiation investigated methods role osteoblast differentiation examined using mouse bone marrow derived cell line effect smad determined following small interfering rna knockdown runt related transcription factor runx alkaline phosphatase alp osteocalcin mrna levels determined quantitative real time polymerase chain reaction transcriptional activation assessed using luciferase reporter assays extracellular signalregulated kinase erk phosphorylation visualized via immunoblotting results synthetic oligopeptide stimulated expression bone marker genes runx alp cells via smad erk mitogen activated protein kinase signaling pathways bone morphogenic protein bmp furthermore runx acted transcription factor finduced osteoblast differentiation conclusions collectively results indicate induces osteoblast differentiation pattern similar mediated bmp signaling pathway authors previous data also showed derived oligopeptide improved wound healing suggested might serve therapeutic biomolecule facilitate periodontal tissue regeneration
tnf alpha stimulated gene tsg kda protein generated activated macrophages modulates inflammation however mechanism action role activation macrophages fully understood herewe observed markedly augmented lps induced inflammatory lung injury mortality tsg mice compared tsg mice treatment mice intratracheal instillation tsg prevented lps induced lung injury neutrophil sequestration increased survival mice found tsg inhibited association tlr myd thereby suppressing kappa activation tsg also prevented expression proinflammatory proteins inos tnf alpha beta cxcl increasing expression anti inflammatory proteins chil macrophages shift associated suppressed activation proinflammatory transcription factors stat stat addition observed lps regulated expression tsg tsg mice suggesting autocrine role tsg transitioning macrophages thus tsg functions converting macrophages proinflammatory anti inflammatory phenotype secondary suppression tlr kappa signaling stat stat activation
dishevelled dvl links canonical wnt non canonical wnt pathways also crosstalk pathways systematic study date dvl rheumatoid arthritis explored impact dvl proliferation inflammatory cytokine secretion fibroblast like synoviocytes flss expression dvl synovial tissue flss measured dvl overexpressed collagen induced arthritis rats human flss apoptosis secretion inflammatory cytokines observed genetic changes corresponding mechanisms caused overexpressing dvl flss assessed dvl found overexpressed synovial tissue flss overexpression dvl increased apoptosis inhibited inflammatory cytokine secretion flss vivo vitro dvl inhibited expression antiapoptotic inflammatory genes one possible mechanism dvl decreases nuclear translocation inhibits ability bind promoters kappa target genes findings reveal underappreciated role dvl regulating inflammation fls apoptosis provide insight crosstalk wnt nuclear factor kappa kappa pathways
simple efficient protocol introducing exogenous gene agrobacterium tumfaciens physcomitrella patens established gametophores gametophytes leaves inoculated wells medium degrees continuous light energy mol cool white fluorescent lamps grew form many buds days tumefaciens added whole wells times interval continuous cultivation days culture new juvenile gametophytes leaves grew incubated medium containing kanamycin selection positive plants could obtained generations selective culture pcr analysis showed gene cameleon tumefaciens transferred detected plants patens southern blotting analysis confirmed exogenous gene integrated genomic dna single locus results facilitated analyze genes plants via genetic transformation system
isolated cdna antiporter designated suaeda salsa cation exchanger sscax halophyte salsa ascertain location sscax cell peptide specific antibody sscax prepared western blotting analysis showed reacted kda protein salsa vacuolar membrane furthermore sscax could resume yeast vacuolar transport mutants growth high concentration culture medium northern blotting analysis showed sscax expression mainly found leaves stems slightly roots salsa seedlings moreover sscax expression levels protein amounts significantly upregulated cacl nacl treatment respectively addition upregulation expression levels atpase subunit coordinated expression levels antiporter salinity results suggested sscax halophyte salsa might transporter tonoplast plays key role maintaining cytosolic homeostasis saline condition
objective long term prognosis hepatocellular carcinoma hcc remains poor owing lack treatment options advanced hcc cytokine induced killer cik cells vivo expanded lymphocytes expressing cell markers cik cell therapy alone insufficient treating advanced hcc thus study aimed determine whether treatment cik cells combined valproic acid vpa could provide synergistic effect inhibit tumor growth mouse model hcc methods upregulation natural killer group nkgd ligands retinoic acid early inducible rae mouse major histocompatibility complex class polypeptide related sequence mic human evaluated facs vpa concentrations reduce tumor volume calculated avoid vpa cytotoxicity mouse model hcc cik cells generated mouse splenocytes using interferon gamma monoclonal antibody interleukin potential synergistic effect cik cells combined vpa evaluated mouse model tissue pathology investigated results incubation vpa rae mic expression increased hcc cell lines compared control fold fold huh fold snu fold snu maximal vivo vpa dosage showed significant cytotoxicity compared control day cik cells well generated mouse splenocytes treatment cik cells plus vpa synergistic effect observed relative tumor volume mouse model hcc relative tumor volume untreated control mice increased combination treatment group increased conclusions vpa induced increase nkgd ligands expression significantly enhanced effects cik cell therapy mouse model hcc
previous studies found levels cytochrome oxidative activities cytochrome monooxygenases enhanced fenvalerate resistant strain hdfr helicoverpa armigera hubner china comparing susceptible strain hds report molecular cloning gene expression specific cypb hdfr hds strain armigera comparison deduced amino acid sequence showed three substitutions amino acids coding region cypb cdna hdfr strain comparing hds strain meanwhile three mutative nucleotides intron cypb genomic dna hdfr strain northern blotting analysis showed expression cypb mrna hdfr strain armigera fold higher hds strain studies indicated expression cypb mrna increased larvae developed however rarely detected pupae adult stages results suggested cytochrome cypb plays important role pyrethroid insecticide fenvalerate resistance hdfr strain armigera expression cypb combined relevant substitution amino acids might responsible fenvalerate resistance armigera china
paper describe expression purification kinetics biophysical characterization alanine aminotransferase alaat barley plant hordeum vulgare dimeric plp dependent enzyme pivotal element several key metabolic pathways nitrogen assimilation carbon metabolism introduction transgenic plants results increased yield enzyme exhibits ping pong reaction mechanism alanine oxoglutarate glutamate pyruvate respectively barley alaat catalyzes forward alanine forming reaction cat reverse glutamate forming reaction cat equilibrium constant similar enzyme also able utilize aspartate oxaloacetate similar efficiency compared native substrates makes much specific related bacterial archaeal enzymes also lower values crystallized barley alaat complex plp cycloserine solved structure complex angstrom resolution first example plant alaat structure reveals canonical aminotransferase fold similar structures thermotoga maritima pyrococcus furiosus human enzymes structure bridges structural understanding alaat mechanism three kingdoms life allows shed light specifics catalysis performed proteins elsevier inc rights reserved
micrornas mirnas short similar nucleotide length rnas perform gene regulation recently mirna shown linked onset cancer diseases based mirna expression levels important therefore understand mirna function pertains disease onset however order fully understand mirna role disease necessary detect expression levels small molecules widely used mirna detection method northern blotting considered standard mirna detection methods method however time consuming low sensitivity led increase amount detection methods available detection methods either solid phase occurring solid support solution phase occurring solution solid phase methods adaptable high throughput screening possess higher sensitivity northern blotting lack ability vivo use often time consuming solution phase methods advantageous performed vivo sensitive rapid however applied high throughput settings although multiple detection methods available including microarray technology luminescence based assays electrochemical assays etc still much work done regarding mirna detection current gaps mirna detection include ability perform multiplex sensitive detection mirna single nucleotide specificity along standardization new methods current mirna detection methods gaps methods mirna therapeutic options future outlook mirna detection presented
aims hypothesis adiponectin important regulation insulin sensitivity man receptors adipor recently identified expression adipose tissue regulation response insulin sensitisation diabetic patients never assessed therefore explored regulation adipor adiponectin expression adipose tissue skeletal muscle adiponectin plasma concentrations response insulin sensitisation rosiglitazone methods patients type diabetes studied double blind placebo controlled crossover study using vivo arteriovenous techniques measuring adipose tissue muscle blood flow combined measurement adipose tissue skeletal muscle gene expression results rosiglitazone treatment increased adiponectin concentrations skeletal muscle adipor expression regulated median interquartile range relative units adipose tissue adipor expression regulated relative units rosiglitazone contrast adipor expression adipor expression altered rosiglitazone either tissues increase adipose tissue adipor expression rosiglitazone associated increased postprandial triglyceride clearance increased fasting fatty acid output measured subcutaneous adipose tissue conclusion adipor expression regulated adipose tissue regulated skeletal muscle rosiglitazone data suggest adipor plays role mediating effects adiponectin specific tissues relation insulin sensitisation
background small nucleolar rnas highly conserved group small rnas found eukaryotic cells genes encoding rnas diversely located throughout genome functionally conserved performing post transcriptional modification methylation pseudouridylation rrna nuclear rnas belong two major categories box aca box containing snornas snorna exceptional member box snornas involved early processing pre rrna antisense sequence present snorna guides modification processing target rna however snornas lack sequence often called orphan snornas results searched snornas entamoeba histolytica genome sequence using computational programmes snoscan snoseeker obtained snornas aca box snornas along copies snornas located diversely genome mostly intergenic regions found orfs protein coding genes intron utrs computationally predicted snornas validated pcr northern blotting expected sizes agreement observed sizes box snornas tested aca box indication processing generate shorter products conclusion results showed presence snornas histolytica early branching eukaryote structural features histolytica snornas well conserved compared yeast human snornas study help understanding evolution conserved rnas diverse phylogenetic groups
aim study optimize production optically pure lactic acid dla employing cost effective production medium based designed biomass approach sporolactobacillus inulinus nbrc found exhibit high dla titer optical purity cost effective medium constituted using palmyra palm jaggery borassus flabellifer whey protein hydrolysate wph carbon nitrogen sources respectively plackett burman design indicated wph mnso significant variables influence dla production rotatable central composite design response surface methodology used optimize wph concentrations maximum dla titer predicted wph respectively fermentation experimental results exhibited maximum dla titer productivity highest ever reported dla production renewable feedstock batch process present investigation substantiates potential application economically viable raw feedstocks wph enhanced dla production attributed fold reduction dla production cost compared conventional medium international union biochemistry molecular biology inc
purpose review aimed produce comprehensive update clinical biological data regarding two rare lymphoid neoplasms prolymphocytic leukemias assess therapeutic management light new molecular insights advent targeted therapies recent findings cell prolymphocytic leukemia pll diagnosis remains challenging absence clear immunophenotypic cytogenetic signature overlap mantle cell lymphoma new molecular defects identified cell prolymphocytic leukemia pll especially jak stat pathway like chronic lymphocytic leukemia cll pll treatment depends presence dysfunction pll alemtuzumab still remains standard care allogeneic transplantation curable option thanks reduced intensity conditioning regimens become accessible larger number patients summary pll prognosis remains poor conventional therapies however great advances understanding pll pathogenesis lead promising new therapeutic agents
certain special biological characteristics japanese quails coturnix coturnix japonica could enable quicker less expensive laboratory experiments similar studies using mice chickens moreover due physiological similarities humans quails recognized ideal laboratory model experiments fields immunology endocrinology reproductive biology aim study acquire normal ultrasonographic images reproductive organs female japanese quails order facilitate laboratory experiments reproductive biology determine non invasive life alternative carcass analysis thirty female japanese quails different ages used ultrasound scanning ovaries follicles ova oviducts eggs addition five quails euthanized experiments using direct standoff imaging technique possible identify different sizes follicles ranging small white follicles large yellow follicles post ovulatory follicles pofs ova various stages development oviducts also eggs within oviducts findings demonstrate ultrasound scanning female japanese quail reproductive organs might beneficial diagnostic tool applications studying reproductive physiology anticipating beginning end breeding season detecting pathological disorders easily identifying non productive females could lead cost efficient laboratory procedures
lipids central part human metabolism also play diverse critical roles immune system act ligands lipid activated nuclear receptors control inflammatory signaling bioactive lipids prostaglandins leukotrienes lipoxins resolvins protectins modulate immunity intracellular phospholipid sphin golipid derived signaling mediators addition lipids serve antigens regulate immunity activation lipid reactive cells topic review provide overview mechanisms lipid antigen presentation biology lipid reactive cells contribution immunity
original documents hammett ingold presented elucidate origin physical organic chemistry late early field gained fast popularity within four decades created presently accepted mechanistic model organic chemistry focus research organic chemistry shifted synthesis around physical organic chemistry lost visibility though mechanistic investigations became integral aspects synthetic method development important subdisciplines physical organic chemistry supramolecular chemistry mechanistic enzymology continued develop separate headings systematic use newly developed techniques gas phase chemistry laser spectroscopy matrix isolation expected lead renaissance classical physical organic chemistry
alpha antitrypsin aat circulating glycoprotein rises acute phase responses healthy pregnancies exhibits immunomodulatory properties several cell dependent immune pathologies however aat directly interfere cell responses instead facilitates polarization macrophages dendritic cells towards like tolerogenic cells respectively aat also allows cell responses tumor cells attenuating dependent induction autoimmune cell activities since aat treated macrophages bear resemblance cancer promoting tumor associated macrophages tams became imperative examine possible induction tumor permissive conditions aat aat treatment examined effect tumor development metastatic spread tumor immunology systemic aat treatment mice inoculated melanoma cells resulted significant inhibition tumor growth metastatic spread using cell resistant rma cells show aat interferes tumor development cell dependent manner unexpectedly upon analysis tumor cellular composition identified functional tumor infiltrating cells alongside like tams aat treated mice based ability aat undergo chemical modifications emulated conditions elevated reactive nitrogen oxygen species indeed macrophages stimulated treatment nitrosylated aat ifn gamma transcripts significantly elevated tumors extracted soon ischemia reperfusion challenge context specific changes may explain differential effects aat immune responses towards tumor cells versus benign antigenic targets data suggest systemically elevated levels aat may accommodate physiological function inflammatory resolution without compromising tumor targeting immune responses
among rnas trna exhibits largest number widest variety post transcriptional modifications modifications within anticodon stem loop mainly wobble position purine collectively contribute stabilize codon anticodon pairing maintain translational reading frame facilitate engagement ribosomal decoding site enable translocation trna site site ribosome modifications wobble uridine trnas reading two degenerate codons ending purine complex result activity two multi enzyme pathways iscs mnma mnmeg pathways independently work positions pyrimidine ring respectively third pathway controlled trml yibk modifies hydroxyl group ribose mnmeg common pathway mentioned trnas involves gtp fad dependent activity mnmeg complex cases activity bifunctional enzyme mnmc escherichia coli mnmeg complex catalyzes incorporation aminomethyl group atom using methylene tetrahydrofolate glycine ammonium donors reaction requires gtp hydrolysis probably assemble active site enzyme carry substrate recognition inactivation evolutionarily conserved mnmeg pathway produces pleiotropic phenotype bacteria mitochondrial dysfunction human cell lines iscs mnma pathway mnma mediated thiouridylation reaction relatively well understood limited information reactions mediated mnmeg mnmc trml enzymes precise role proteins mnme mnmg mnmeg complex activity review summarizes present state knowledge pathways still need know special emphasis mnmeg pathway elsevier masson sas rights reserved
chlamydia trachomatis genital infection common sexually transmitted bacterial disease causing significant burden females due reproductive dysfunction intensive screening antibiotic treatment unable completely prevent female reproductive dysfunction thus efforts become focused developing vaccine major impediment identifying safe effective adjuvant induces cluster differentiation cells attributes capable halting genital infection inflammation previously described natural nanocapsule called vault engineered contain major outer membrane protein momp effective vaccine significantly reduced early infection favored development cellular immune response mouse model current study used another chlamydial antigen polymorphic membrane protein pmpg peptide track antigen specific cells evaluate depth vault vaccine protective capacity absence added adjuvant found pmpg vault immunized mice significantly reduced genital bacterial burden histopathologic parameters inflammation following muridarum challenge immunization boosted antigen specific cells multiple cytokine secretion pattern reduced number inflammatory cells genital tract making vault vaccine platform safe effective chlamydial genital infection conclude vaccination chlamydia vault vaccine boosts antigen specific immunities effective eradicating infection preventing reproductive tract inflammation
soluble epoxide hydrolases sehs catalyze hydrolysis epoxides corresponding vicinal diols one property number enzymes catalyze hydrolysis racemic substrates enantioconvergent one enzyme fashion used dispersion corrected blyp density functional theory method investigate enantioconvergent conversion styrene oxide seh solanum tuberosum steh large cluster model active site consisting atoms designed basis ray crystal structure steh complex competitive inhibitor valpromide different substrate orientations two enantiomers examined full reaction mechanisms epoxide opening two carbons calculated including alkylation hydrolysis half reactions calculated overall reaction energy profiles show rate determining step associated dissociation covalent intermediate second step hydrolysis half reaction calculations reproduce experimentally observed regioselectivities two enantiomers substrate calculated yield diol product obtained energy profiles indicate transition states alkylation hydrolysis half reactions taken account order understand stereochemical outcome reaction transition state structures analyzed detail several factors contribute selectivity control identified addition mechanistic scenario active site residue protonated form also considered implications energies enantioselection discussed current calculations demonstrate applicability quantum chemical cluster methodology reproducing rationalizing experimental enantioselectivities lending support usefulness tool asymmetric biocatalysis results presented helpful rational engineering sehs obtain variants refined biocatalytic properties
background autologous fat grafting prevalent technique used softtissue augmentation however poor survival rate grafted tissue remains drawback method although adipose derived stem cells ascs attractive candidate enhancing graft retention poor posttransplantation viability cells limits application investigated whether overexpression antiapoptotic protein heat shock protein hsp could enhance ascs therapeutic potential fat transplant survival methods recombinant adenoviral vectors used overexpress hsp ascs isolated healthy woman hsp expression assessed quantitative real time polymerase chain reaction western blot analyses adipose tissue granules aspirated anotherwomanweremixed ascs expressing green fluorescent protein gfp tagged hsp group gfp alone group untreated ascs group phosphate buffered saline group fat mixtures injected subcutaneously backs nude mice graft survival compared months results adipose derived stem cells transduced recombinant adenoviral vectors exhibited significantly increased hsp expression vitro meanwhile weight retention analyses demonstrated fat grafts using group cell population exhibited significantly higher survival rates treatment groups vivo moreover histological analyses revealed fat grafts containing gfp hsp expressing ascs yielded significantly lower levels tissue fibrosis fat cysts vacuoles higher capillary densities increased numbers viable adipocytes control groups conclusions data indicate hsp overexpression enhances efficacy asc therapy improving survival quality transplanted fat tissues
cells reactive specific antigen usually occur frequency lymphocytes decades researchers sought methods isolate enrich rare cells studies phenotype biology approaches inevitably based principle cells recognize native antigen virtue cell surface receptors representative specificity antibodies eventually secreted differentiated daughters perhaps obvious approach problem involves use fluorochrome conjugated antigens conjunction fluorescence activated cell sorting facs however utility methods limited cell frequency achievable rate analysis isolation electronic sorting novel method enrich rare antigen specific cells using magnetic nanoparticles results high yield enrichment antigen reactive cells large starting cell populations described method enables improved monitoring phenotype biology antigen reactive cells following vivo antigen encounter immunization development autoimmunity
effective hiv prevention requires knowledge structure dynamics social networks across infections transmitted networks commonly comprise chains sexual relationships populations sharing contaminated needles also important even main mechanism connects people network whereas network data long collected survey interviews new data sources become increasingly common recent years advances molecular biology use partner notification services hiv prevention treatment programmes review current emerging methods collecting hiv related network data well modelling frameworks commonly used infer network parameters map potential hiv transmission pathways within network discuss relative strengths weaknesses existing methods models propose research agenda advancing network analysis hiv epidemiology make case combination approach integrates multiple data sources coherent statistical framework copyright wolters kluwer health inc rights reserved
tremendous advances understanding tumor immunology molecular biology urothelial carcinoma led recent approval immunotherapy novel option patients advanced disease despite promising data novel immune checkpoint inhibitors small subset patients achieves durable remissions optimal antitumor response requires coordination multiple immune tumor microenvironment effector cells novel approaches targeting distinct mechanisms action likely combination needed addition discovery reliable immune biomarkers understanding mechanisms resistance novel clinical trial designs warranted maximum benefit immunotherapy elsevier inc rights reserved
although large numbers long noncoding rnas incrnas expressed mammalian nervous system detected functions mechanisms regulation remain fully clarified reported incrna antisense transcript beta secretase bace elevated alzheimer disease drives rapid feed forward regulation secretase suggesting critical development present study senile plaque syy cell model established using synthetic amyloid beta protein beta vitro using model potential sirna mediated silencing incrna bace expression attenuate ability beta secretase bace cleave amyloid precursor protein app reduce production beta oligomers investigated mtt assays demonstrated exogenous beta suppressed syy cell proliferation induced app related factor expression formation furthermore quantitative polymerase chain reaction western blot analysis revealed mrna protein expression beta beta significantly increased model group marked decrease expression day six rnase protection assays rpa northern blotting analysis confirmed exogenous beta promoted expression app cleaving enzyme bace also induced incrna bace expression furthermore incrna bace formed rna duplexes increased stability bace mrna downregulation incrna bace expression syy cells sirna silencing resulted attenuation ability bace cleave app delayed induction formation syy cell model
quantitatively examined transcript levels ten fatty acid binding protein fabp isoforms brown adipose tissue bat rats kept room temperature rats exposed cold northern blotting using synthesized rna isoform external standard fabp expressed bat rats maintained room temperature exposed cold fabp abundantly expressed isoform transcript level significantly affected cold exposure fabp slightly expressed bat rats maintained room temperature transcript level elevated ten fold cold exposure fabp also elevated four fold cold exposure amount mrna bat negligible
conclusions levels expression various type lectin receptors clrs messenger ribo nucleic acids mrnas significantly higher cholesteatomas normal skin suggesting clrs may involved pathogenesis cholesteatoma objectives altered expression pattern recognition receptors may associated immune responses patients cholesteatoma study assessed levels expression clr mrnas normal skin cholesteatoma methods cholesteatoma specimens obtained patients acquired cholesteatoma levels expression various clr mrnas assessed quantitatively using real time pcr reverse transcription polymerase chain reaction correlated age sex presence bacteria hearing level frequency surgery degree ossicle destruction results levels cluster differentiation dec dendritic epithelial cell mgl monoacylglycerol lipase cleca type lectin domain family member dectin dendrite cell associated type lectin bdca blood dendritic cell antigen mincle dcir dendritic cell immunoreceptor dectin micl myeloid inhibitory type like lectin clecb type lectin domain family member mrnas significantly higher cholesteatoma control skin samples destroyed ossicles levels mgl mincle dectin clecb mrnas significantly higher recurrent initial cholesteatoma specimens level cleca mrnas significantly higher patients severe mild moderate hearing loss
research regenerative dentistry contributed momentum field molecular biology periapical surgery aims removing periapical pathology achieve complete wound healing regeneration bone periodontal tissue regenerative endodontic procedures widely added current armamentarium pulp therapy procedures regenerative potential platelets deliberated platelet rich fibrin prf wonderful tissue engineering product recently gained much popularity due promising results wound healing bone induction features product attribute platelets cellular interactions release growth factors shown application diverse disciplines dentistry paper intended shed light onto various prospects prf provide clinical insight regenerative endodontic therapy
describe proof concept study competitive enzyme linked immunosorbent assay elisa system adenylation domains nonribosomal peptide synthetases nrpss active site directed probes coupled aminoacyl sulfamoyladenosine scaffold biotin functionality immobilizes probes onto streptavidin coated solid support dissociation constants determined series ligands including enzyme substrates library sulfamoyloxy linked aminoacyl aryl amp analogues enables direct readout protein ligand interaction competitive elisa technique provided information comparative structure activity relationships insights enzyme active site architecture nrps domains studies indicate elisa technique accelerate discovery small molecule inhibitors domains new scaffolds perturb production nrps related virulence factors
frontotemporal lobar degeneration ftld characterized progressive deterioration frontal anterior temporal lobes brain often exhibits frontotemporal dementia ftd clinic year old patients time diagnosis interdisciplinary approaches combining genetics molecular cell biology laboratory animal science revealed potential molecular mechanisms although still effective treatment delay prevent reverse progression ftd emergence agents targeting molecular mechanisms beginning promote potential pharmaceutical development review summarizes latest new findings ftld challenges ftld therapy
vaccination saved lives medical procedure pathogens evolved succumbed vaccination using empirical paradigms pioneered pasteur jenner vaccine design strategies based mechanistic understanding pertinent immunology virology required confront eliminate scourges perspective describe examples work aimed achieve goal bringing together approaches statistical physics biology clinical research
aim present study evaluate effects sperm motility enhancers different ivf times cleavage polyspermy blastocyst formation embryo quality hatching ability experiment sex sorted chromosome bearing bos taurus spermatozoa incubated min fertilisation hyperactivating factors namely caffeine theophylline caffeine theophylline untreated spermatozoa control experiment matured taurus oocytes fertilised using short standard fertilisation length comparing two different fertilisation media namely synthetic oviducal fluid sof fertilisation medium sof fert fertilisation medium fert cleavage blastocyst formation rates significantly higher group respectively compared control group respectively cleavage rates blastocyst formation significantly lower shortest fertilisation time fert medium respectively sof fert medium fertilisation time resulted highest cleavage rates blastocyst formation respectively sof fert medium produced highest embryo quality grade hatching rate motility enhancers affect polyspermy rates whereas polyspermy affected fertilisation length extended fert compared sof fert conclude adding motility enhancers sex sorted spermatozoa tyrode albumin lactate pyruvate talp sperm improve cleavage embryo development rates without increasing polyspermy addition shortening oocyte sperm coincubation time resulted similar overall embryo performance rates compared prolonged interval
latino americans rapidly growing ethnic group united states studies glioblastoma population limited evaluated characteristics glioblastoma patients surveillance epidemiology end results seer program national cancer institute seer data draws population latinos lower incidence gbm present slightly younger non latino whites cubans present older age latino sub populations latinos higher incidence giant cell glioblastoma non latino whites incidence gliosarcoma similar despite lower rates radiation therapy greater rates sub total resection non latino whites latinos better year survival rates seer record chemotherapy data survivals latino sub populations similar age extent resection use radiation therapy associated improved survival none variables sufficient multivariate analysis explain improved survival latinos relative non latino whites molecular data available seer records studied mgmt idh status patients ucla database mgmt methylation idh mutation rates statistically significantly different non latino whites latinos ucla patients available information chemotherapy radiation rates similar non latino white latino patients latter lower rates gross total resection present younger age
influence early life experience degree parental infant attachment emotional development children adolescents comprehensively studied structural mechanistic insight biological foundation maintenance mammalian defensive systems metabolic immune nervous behavioral slowly advancing emerging field developmental molecular epi genetics initial evidence revealed differential nurture early life generates stable differences offspring hypothalamic pituitary adrenal hpa regulation part chromatin remodeling changes dna methylation specific genes expressed brain revealing physical biochemical molecular paths epidemiological concept gene environment interactions herein primary molecular mechanism underpinning early developmental programming lifelong maintenance defensive emotional responses offspring alteration chromatin domains specific genomic regions condensed state heterochromatin transcriptionally accessible state euchromatin conversely dna methylation promotes formation heterochromatin essential gene silencing genomic integrity chromosome segregation therefore inter individual differences chromatin modifications dna methylation marks hold great potential assessing impact early life experience effectiveness intervention programs guided psychosocial strategies focused changing behavior pharmacological treatments target chromatin remodeling dna methylation enzymes dietary approaches alter cellular pools metabolic intermediates methyl donors affect nutrient bioavailability metabolism review article discuss potential molecular mechanism gene regulation associated chromatin modeling programming endocrine hpa metabolic cardiovascular behavioral fearfulness vigilance responses stress including alterations dna methylation role dna repair machinery parental history drugs housing illness nutrition socialization maternal offspring exchanges nutrition microbiota antibodies stimulation nature nurture provides mechanistic insight experiences propagate external internal variables also identifies composite therapeutic target chromatin modeling gestational prenatal stress adolescent anxiety depression adult onset neuropsychiatric disease
dystonias group disorders characterized excessive muscle contractions leading abnormal movements postures many different clinical manifestations underlying causes deep brain stimulation dbs provides effect treatment outcomes vary considerably among different subtypes dystonia several variables thought contribute variation including age onset duration dystonia specific characteristics dystonic movements location stimulation stimulator settings others potential contributions genetic factors received little attention review summarize evidence variation dbs outcomes dystonia due genetic factors evidence suggests methodical genetic testing may provide useful information assessment potential surgical candidates advancing understanding biological mechanisms influence dbs outcomes
background mediator complex med pivotal subunit mediator complex aberrant expression involved tumourigenesis aimed explore mechanism med promotes proliferation breast cancer methods lentivirus mediated inhibition med ectopic expression med ectopic expression core binding factor subunit alpha translocation cbfat applied human breast cancer cell lines human breast cancer cell proliferation determined using cck colony formation assays lentivirus infection expression med cbfat heb measured real time reverse transcription polymerase chain reaction western blotting correlation med cbfat expression tissue cases human breast cancer analysed results study demonstrate cell proliferation colony formation capacity significantly inhibited med inhibition vitro expression cbfat distinctly regulated mda mcf human breast cancer cells med knocked however expression heb targeted cbfat regulated meanwhile ectopic expression med hst human breast cancer cells inhibited cbfat expression enhanced heb expression proliferation capacity human breast cancer cells increased med overexpressed effect med regulation could reversed cbfat overexpression furthermore negative correlation med cbfat expression demonstrated western blotting human breast cancer tissue conclusions results suggest med promotes breast cancer cell proliferation effect associated cbfat heb results provide new insights potential role med regulation breast carcinogenesis med may useful therapeutic target breast cancer therapy
universally accepted grading system classify severity systemic allergic reactions sars including anaphylaxis although consensus definition anaphylaxis established signs symptoms required define reaction anaphylaxis inconsistently applied research clinical practice result difficult compare evaluate safety outcomes surveys clinical practice trials pharmacovigilance data world allergy organization wao proposed uniform grading system classify allergen immunotherapy sars basis grading system organ system involved reaction severity final grade determined physician health care professional event although wao grading system developed classify allergen immunotherapy sars appropriate modifications used classify sars cause purpose rostrum present proposed modification wao sar grading system make applicable sars due cause modified grading system allows classification less severe sars may underreported overreported clinical trials surveillance studies depending criteria specified adverse event reporting universal use proposed modified sar grading system allow better safety comparisons across different venues treatment protocols american academy allergy asthma immunology allergy clin immunol pract
century witnessed many advances scientific enzymology microbiology laid foundations modern biotechnological industries current study analyze content original lager beer samples emphasis carbohydrate content composition historic samples include oldest samples brewed pure saccharomyces carlsbergensis yeast strains detailed record beer pasteurization time available historic samples indicate gradual improvement bottled beer handling decreasing contamination enzymatic microbial activities time span samples sufficiently well preserved allow comparisons present day references thus yielding molecular signatures effects century science beer production opposite rather stable carbohydrate profiles aldehydes reach fold higher levels historic samples compared present day references elsevier ltd rights reserved
chronic hepatitis virus hbv infection variants mutations basal core promoter bcp precore region predominate associate severe disease forms studies effect viral replication remain controversial increasing evidence shows epigenetic modifications cccdna regulate hbv replication disease outcome determined transcription viral replication efficiency well defined bcp precore mutations effect cccdna epigenetic control hbv monomers bearing bcp mutations precore mutations transfected hepg cells using plasmid free approach viral rna transcripts detected northern blot hybridization pcr dna replicative intermediates southern blotting pcr viral release measured elisa acetylation cccdna bound histones assessed chromatin immunoprecipitation chip assay methylation cccdna bisulfite sequencing bcp mutations resulted low viral release mrna transcription pgrna cccdna ratios paralleled acetylation cccdna bound histone inversely correlated hdac recruitment onto cccdna independently mutations cccdna target methylation accompanied upregulation dnmt expression dnmt recruitment onto cccdna results suggest bcp mutations decrease viral replication capacity possibly modulating acetylation deacetylation cccdna bound histones precore mutations significant effect viral replication data provide evidence epigenetic factors contribute regulation hbv viral replication elsevier rights reserved
ability identify stratify patients respond specific therapies transformational number disease areas particularly oncology anticipated also case cell based therapies particularly complex heterogeneous diseases rheumatoid arthritis recently clinical results expanded allogenic adipose derived mesenchymal stem cells eascs indicated clinical efficacy highly refractory patients study set determine circulating micrornas mirnas could identified potential biomarkers associated response eascs patients mirna expression profiles pre treatment plasma samples responder nonresponder patients determined using microarrays ten mirnas identified differentially expressed responder group compared nonresponder group confirm differential expression mirna biomarkers assayed quantitative reverse transcriptase polymerase chain reaction qrt pcr analysis three mirnas mir mir mir confirmed statistically significantly upregulated responder group compared nonresponder group receiver operating characteristic analysis confirmed diagnostic potential mirnas could represent novel candidate stratification biomarkers associated patient response eascs worthy clinical validation
peng zhang ingram kelly gilbert gao kumar krepinsky egfr plc gamma signaling mediates high glucose induced pkc beta akt activation collagen upregulation mesangial cells physiol renal physiol first published july doi ajprenal glomerular matrix accumulation hallmark diabetic nephropathy recently shown epidermal growth factor receptor egfr transactivation mediates high glucose induced collagen upregulation pik pkc beta akt signaling mesangial cells phospholipase gamma plc gamma interacts activated growth factor receptors activates classic pkc isoforms thus studied role induced collagen upregulation primary rat treated mannitol osmotic control protein kinase activation assessed western blotting collagen upregulation northern blotting diabetes induced rats streptozotocin treatment led plc gamma membrane translocation phosphorylation indicative activation mannitol without effect plc gamma phosphorylation also seen cortex glomeruli diabetic rats induced physical association egfr plc gamma identified coimmuno precipitation plc gamma activation required egfr kinase activity since prevented egfr inhibitor overexpression kinase inactive egfr phosphoinositide kinase inhibition also prevented plc gamma activation induced akt phosphorylation effected pkc beta inhibited plc gamma inhibitor plc gamma inhibition downregulation small interference rna also prevented induced collagen upregulation results indicate egfr plc gamma signaling mediates induced pkc beta akt activation subsequent collagen upregulation inhibition egfr plc gamma may provide attractive therapeutic targets treatment diabetic nephropathy
background identification immunogenic regions surface antigens able recognized antibodies trigger immune response major challenge design new effective vaccines prediction regions computational immunology techniques challenging goal ultimately lead drastic limitation experimental tests required validate efficiency however current methods far sufficiently reliable applicable large scale results developed sepia cell epitope predictor protein sequence sufficiently fast applicable large scale originality sepia lies combination two classifiers naive bayesian random forest classifier voting algorithm exploits advantages based sequence based features whose values residue sequence window compiled predict epitope non epitope state central residue features related type amino acid conservation homologous proteins tendency exposed solvent soluble flexible disordered highest signal obtained statistical amino acid preferences features contribute non negligibly predictor sepia average prediction accuracy limited auc score area receiver operating characteristic curve reaches fold cross validation independent test set nevertheless slightly higher methods evaluated test set conclusions sepia applied test protein whose epitopes known human beta adrenergic protein coupled receptor promising results although actual auc score rather low many predicted epitopes cluster together overlap experimental epitope region reasons underlying limitations sepia cell epitope predictors discussed
circulating tumor cells ctc become field interest oncologists based premise constitute underpinning metastatic dissemination lethal nature cancer longer attributed solid tumor formation rather process metastasis shifting focus current studies towards isolation identification metastatic progenitors ctcs ctcs originate primary tumor masses undergo morphologic genetic alterations involve release mesenchymal like cancer cells bloodstream capable invading nearby tissues secondary tumor development cancerous cells contained primary tumor mass acquire motile mesenchymal phenotype result epithelial mesenchymal transition substantial variations protein expression signaling pathways take place cfcs migrate primary tumor intravasate systemic vasculature transported bloodstream invade tissues organs suitable secondary tumor development limited number ctcs viable bloodstream ability elude immune system evade apoptosis successfully metastasize secondary tumor sites makes ctcs promising candidates unraveling triggers initiates metastatic process article subjects explored greater depth elucidate potential use cfcs detection disease staging management metastatic melanoma elsevier rights reserved
lipopolysaccharide lps constitutes lipid portion outer leaflet gram negative bacteria essential growth also responsible variety biological effects associated gram negative sepsis recent advances elucidated exact chemical structure highly complex macromolecule much enzymology involved biosynthesis enzymes involved lps biogenesis optimal targets development novel therapeutics since sufficiently conserved among diverse clinically relevant bacteria analogue counterpart present humans last thirty years number inhibitors lps biosynthesis developed compounds antibacterial properties others show excellent vitro activity undergoing investigation main focus review biology lps bacteria summarizing knowledge structure enzymatic catalysis well chemical efforts towards synthesis inhibitors key enzymes involved biosynthesis kdo toward minimal conserve structure kdo lipa addition recent advances deciphering molecular mechanisms lps transport cell surface new target develop novel antibacterials reported future directions perspectives also outlined
found stem cell leukemia scl also known cell acute lymphocytic leukemia tal gene expression upregulated maturing rat testis strong expression tal detected normal maturing rat testis northern blotting western blotting revealed protein size kda protein expression wide spread spermatocytes spermtids spermatogonia accordance seminiferous epithelium cycle determined analysis immunohistochemistry gene expression tal regulatory gene nkx negatively correlated tal expression human tal expression maturing testis well bone marrow observed suggests gene product novel cancer testis antigen candidate taken together tal may involved cell division morphological changes development spermatogenic cells normal rat testis
three dimensional culture simulate vivo microenvironments increasingly used study tumor cell biology since preclinical anti glioma drug tests still rely conventional cell culture established collagen scaffold glioma cell culture glioma cells cultured scaffolds showed greater degree dedifferentiation quiescence cells culture cultured cells also exhibited enhanced resistance chemotherapeutic alkylating agents much higher proportion glioma stem cells upregulation methylguanine dna methyltransferase mgmt importantly tumor cells culture showed chemotherapy resistance patterns similar observed glioma patients results suggest collagen scaffolds promising vitro research platforms screening new anti glioma therapeutics
strawberry ideal model studying molecular biology development ripening non climacteric fruits hormonal regulation gene expression along processes strawberries still fully elucidated although auxins aba pointed major regulatory hormones high throughput analyses carried date role ethylene gibberellins regulatory hormones development ripening strawberry fruit remain still elusive using custom made high quality oligo microarray platform done probes including genes actually described strawberry genome analysed expression genes development ripening receptacles fruits classify genes two major groups depending upon temporal developmental expression first group genes induced initial development stages second group encompasses genes induced final maturation ripening processes two groups also divided four sub groups according pattern hormonal regulation analyzing gene expression clearly show auxins aba main key hormones combined independently responsible development ripening process auxins responsible receptacle fruit development timea prevent ripening repressing crucial genes aba regulates expression vast majority genes involved ripening main genes expressed control hormones presented physiological rule discussed also conclude ethylene gibberellins seem play prominent role processes
betaine bet native compound known ability protect liver toxicants however studies examined effects bet common cause liver disease hepatitis virus hbv study anti hbv activity bet assessed vitro vivo using enzyme linked immunosorbent assay quantitative polymerase chain reaction southern blotting resistance hbv lamivudine interferon alpha challenging clinical treatment hbv effect bet resistance also investigated results showed secretion hbsag hbv surface antigen hbeag hbv antigen hbv dna hepg cells significantly decreased bet via suppression grp expression duck hbv dhbv infected ducklings bet significantly reduced serum dhbv dna dhbv dna rebound day withdrawal period bet suppressed hbv dna rebound produced resistance hbv lamivudine decreased resistance mutation rtmv hbv dna supplementation bet may improve anti hbv effect interferon alpha increasing expression antiviral dsrna dependent protein kinase induced jak stat jak janus kinase stat signal transducer activator transcription signaling pathway results may provide useful information clinical application bet solution hbv drug resistance anti hbv therapy
study specific sensitive method simultaneous detection human astrovirus human rotavirus norovirus sapovirus enteric adenovirus associated acute enteritis developed based specific dual priming oligonucleotide dpo system sensitive high performance liquid chromatography hplc analysis dpo system based multiplex reverse transcription polymerase chain reaction pcr combined hplc assay sensitive agarose gel electrophoresis analysis real time sybr green pcr assay showed specificity sensitivity high sensitivity specificity assay indicates great potential useful tool accurate diagnosis enteric virus infections elsevier rights reserved
breakthroughs genetics molecular biology heralded major technological revolution medicine would yield wave new drug discoveries however forty years later expected benefits materialized question narrative biotechnology schumpeterian revolution comparing academic research paradigm preceded clinical research hospitals analyze distinct research paradigms involve different epistemologies practices institutional loci develop claim complexity biological systems means clinical research well adapted medical innovation genetics molecular biology paradigm imposed predictive logic search less effective finding new drugs paper describes drug discovery unfolds paradigm clinical research discovery originates observations human subjects proceeds feedback based learning whereas genetics model discovery originates precisely defined molecular target feedback patients enters late process paper reviews post war institutional history witnessed relative decline clinical research rise genetics molecular science united states bio medical research landscape history provides contextual narrative illustrate contrast framing biotechnology schumpeterian revolution adoption biotechnology core drug discovery platform propelled institutional changes largely disconnected processes scientific technological selection implications current medical policy initiatives translational science discussed published elsevier
keratinocytes kcs play key role phases skin sensitization recently identified interleukin production useful end point determination contact sensitization potential low molecular weight chemicals aim study identify genes involved skin sensitizer induced inflammasome activation establish role production gene expression analysis cells treated phenylenediamine ppd reference contact allergen total rna extracted examined commercially available inflammasome polymerase chain reaction pcr array among genes induced nlrp nod like receptor selected investigation nlrp promoter region contains blimp lymphocyte induced maturation protein prdm binding site literature reported blimp reduces nlrp activity expression monocytes macrophages expression role kcs currently unknown confirm nlrp expression investigate relationship blimp cells exposed different times extreme sensitizer dinitrochlorobenzene dncb strong sensitizer ppd allergens able induce genes however different kinetic dncb rapidly upregulating blimp inducing production compared ppd nlrp blimp expression appeared inversely correlated blimp silencing resulted increased nlrp expression reduced contact allergen induced production overall results indicate contact allergens different potency differently modulate blimp nlrp expression strong allergen rapidly downregulating nlrp thus rapidly inducing production data confirm also kcs nlrp inhibitory effect inflammasome activation assessed maturation
many proteins especially allosteric proteins communicate regulatory states allosteric active sites structural deformations functionally important understand deformations dynamical experiments ideal challenging using static structural information although limited dynamical analysis much accessible underused protein analysis strain natural quantity studying local deformations calculate strain tensor fields proteins deformed ligands thermal fluctuations using crystal nmr structure ensembles strains primarily shears show deformations around binding sites deformations induced solely ligand binding distant allosteric sites shears reveal quasi paths mechanical coupling allosteric active sites may constitute widespread mechanism allostery argue strain particularly shear appropriate quantity analysis local protein deformations analysis reveal mechanical biological properties many proteins
control rhipicephalus microplus essential prevent cattle discomfort economic losses however increased resistance acaricides inefficiency lead producers adopt strategies could result accumulation chemical residues meat milk possibilities poisoning animals people scenario demonstrates necessity research identification novel effective environmentally safe therapeutic options cattle tick control objectives study develop assess efficacy microplus biotherapic eugenol control microplus artificially infested calves eighteen male month old holstein calves divided three groups six animals group animals receive medication control group group animals received microplus biotherapic dilution centesimal hahnemannian orally administered twice daily group received single application eugenol pour formulation median efficacy biotherapy eugenol respectively however upon analyzing reproductive efficiency noteworthy biotherapic efficiency superior action eugenol days treatment ultrastructural study provided information effects microplus biotherapic ovaries engorged females showed disorganization deposition oocyte exochorion results suggest hatchability inhibition larvae interference microplus reproduction future possibilities eco friendly control microplus biotherapic
many arylamine hydrazine drugs xenobiotics acetylated acetyltransferase nat cytosolic enzymic activity wide tissue distribution humans classified either fast slow acetylators basis ability metabolise isoniazid sulphamethazine termed polymorphic substrates acetylation compounds vary amongst individuals aminobenzoic acid termed monomorphic substrates nat human hepatic non hepatic tissues viz liver hepatoma cell line hepg iii tonsil lymphocytes monocytic cell line compared respect substrate specificity towards polymorphic monomorphic substrates chromatographic centrifugation behaviour nat sources also investigated nat liver shows fold greater activity towards sulphamethazine towards aminobenzoic acid substrate cell types tested show least fold greater activity aminobenzoic substrate compared sulphamethazine nat hepg cells cells tonsil lymphocytes migrates single peak ion exchange chromatography whereas liver nat activity separated two peaks nat hepg cells resembles extra hepatic tissue nat rather nat liver hepg cells therefore represent good vitro model investigation human metabolism arylamines hydrazines molecular weight nat cells determined combination sucrose density gradient centrifugation gel filtration daltons
investigated prognostic importance plasma myeloperoxidase levels patients elevation myocardial infarction stemi long term follow analyzed correlations plasma myeloperoxidase levels biochemical values evaluated consecutive patients men mean age diagnosed acute stemi age sex matched healthy control participants patients divided groups according median myeloperoxidase level group plasma myeloperoxidase patients monitored occurrence major adverse cardiovascular events mace defined cardiac death reinfarction new hospital admission angina heart failure revascularization procedures mean follow period months plasma myeloperoxidase levels higher stemi patients control participants composite mace occurred patients high myeloperoxidase levels patients low myeloperoxidase levels incidences nonfatal recurrent myocardial infarction verified cardiac death higher high myeloperoxidase group multivariate analysis high plasma myeloperoxidase levels independent predictors mace odds ratio confidence interval high plasma myeloperoxidase levels identify patients worse prognosis acute stemi year follow evaluation plasma myeloperoxidase levels might useful determining patients high risk death mace benefit aggressive treatment closer follow tex heart inst
cancer related deaths due development systemic metastatic disease clearly much remains understood biological principles govern human cancer metastasis aiming ambitious objective decrease metastasis related mortality patients many years research metastasis conducted great part experimental mouse models mainly difficulties sampling longitudinal studies molecular interrogation human metastatic disease however recently extraordinary advances microfluidic technologies allowing isolation characterization human circulating tumor cells ctcs escaped primary tumor mass process seeding distant metastasis analysis human ctcs revealed important features cancer metastasis high metastatic potential ctc clusters compared single ctcs dynamic expression epithelial mesenchymal markers ctcs treatment possibility culture ctcs patients real time individualized testing drug susceptibility nevertheless several aspects ctc biology remain unsolved characterization stem like cell population among human ctcs focus describing latest findings ctc field discuss context cancer stem cell biology defining molecular features metastasis initiating stem like ctcs holds exceptional promise develop metastasis tailored therapies patients cancer
foodborne pathogens cause large number diseases worldwide developing countries major economic impact important contain early detection crucial detection diagnostics relied culture based methods begin developed recent past parallel developments towards immunological methods enzyme linked immunosorbent assays elisa molecular biology based methods polymerase chain reaction pcr aim always find rapid sensitive specific costeffective method ranging culturing microbes futuristic biosensor technology methods common goal review summarizes recent trends brings together methods developed years
melanotic schwannoma soft tissue neoplasm shares histologic features melanocytic tumors schwannomas type called psammomatous pms associated carney complex cnc caused prkara mutations pigmented neoplasms uveal melanomas melanocytomas mcs associated genetic defects genes including gna report adolescent female large sporadic mesenteric complex histologic findings reminiscent pms lesion carried mutation gna gene conclude sporadic mss may occur rarely adolescents without cnc mss may also associated somatic gna mutations
aim early century overfishing caused drastic decline finally extinction local sturgeon populations eastern atlantic date known whether acipenser sturio primarily north american acipenser oxyrinchus occurred aim study show historical pattern sturgeon distribution diversity area last years question essential international restoration programmes location north east atlantic methods study based archaeological sturgeon remains estuaries rivers rhine ems weser elbe eider bones analysed morphologically cases genetically amplification two mitochondrial dna fragments results data bones older years show derive sturio south species slightly frequent elbe northwards oxyrinchus long time far dominant sturgeon species main conclusions genetic identification oldest sturgeon bone shows oxyrinchus occurred north eastern atlantic already years ago consequently immigration species north america europe occurred even earlier potentially last glacial north south occurrence two sturgeon species suggests distribution result interspecific competition different changing environmental conditions previously published genetic data year old museum specimens show strong dominance sturio north sea area obviously oxyrinchus replaced time years ago therefore holocene distribution sturgeons northeast atlantic complex pattern determining ecological bases distribution important justification success restoration programmes
lung alveolar epithelium consists type type pneumocytes vivo type cell progenitor cell type cell originates freshly isolated type cells cultured conventional conditions rapidly lose phenotypic properties attain characteristics type cells taking advantage transdifferentiation sought identify genes differentially expressed culture rat type cells using suppression subtractive hybridization ssh vacuolar type stop atpase atpase subunit gene atpvc found enriched freshly isolated rat type cells compared cultured days northern blotting reverse transcription polymerase chain reaction pcr confirmed differential expression atpvc vitro culture isolated type cells expression atpvc significantly reduced early vitro culture almost reduction observed incubation determined real time pcr situ hybridization showed atpvc expressed bronchiolar alveolar lung epithelial cells expression pattern similar surfactant protein multi tissue northern blotting revealed unique tissue distribution atpvc expression limited lung kidney testis presence expression atpvc gene transcript isoforms resulting alternative splicing also investigated elucidation differential expression atpvc type cells studies regulation may provide information useful understanding molecular mechanism underlying phenotypic functional changes transdifferentiation alveolar epithelial cells
backgroundfilling creams provide adequate substrate spoilage yeasts yeasts tolerate high osmotic stress products discover source spoilage cream filled baked product end products raw materials indoor air work surfaces subjected microbiological molecular analyses efficacy disinfectants spoilage yeasts also assessed resultsthe analyses end products revealed presence closest relatives zygosaccharomyces bailii counts ranging logcfug spoilage yeasts found indoor air work surfaces polymerase chain reaction denaturing gradient gel electrophoresis analysis carried directly filling creams collected unopened cans showed presence bands ascribed closest relatives bailii sensu lato although counts logcfug susceptibility testing yeast isolates disinfectants showed significantly lower effect alkyl dimethyl benzyl ammonium chloride different responses isolates tested disinfectants seen conclusionto guarantee quality end products reliable sensitive methods must used moreover hygiene application good manufacturing practices represent efficient way prevention minimization cross contamination society chemical industry
goal using genetic information derived embryo samples gain insight reproductive biology adult white sturgeon acipenser transmontanus richardson relationship egg development stages extraction quality dna determined subsequent genotype data used infer contributing spawner numbers white sturgeon dna present extractions stages however pre gastrulation stage embryos generally failed amplify sufficient genetic loci analysis using experimentally created families multivariate anova maximum likelihood sibship methods estimated presence contributing parents actual adult spawners observed unidentified half sibling relationships offspring sharing one parent caused error inferring parent numbers genetic methods estimated parents potentially contributed collection wild caught embryos variable numbers parents inferred separate spawning events varying egg source material provides means enhance accuracy annual spawning population size estimates important informing habitat restoration harvest water management decisions recovery planning
brown adipose tissue bat mainly composed adipocytes highly vascularized innervated activated adult humans brown adipocytes responsible performing non shivering thermogenesis exclusively mediated uncoupling protein ucp protein found inner mitochondrial membrane hallmark bat responsible uncoupling proton leakage atp production therefore generating heat thermogenesis besides ucp compounds essential thermogenesis also proliferation differentiation bat including peroxisome proliferator activated receptor ppar family ppargamma coactivator pgc alpha prd riz homologous domain protein containing protein prdm sympathetic nervous system centrally regulates thermogenesis norepinephrine acts adrenergic receptors bat bound leads initialization many pathways may activate thermogenesis acute chronic ways summary mini review aims demonstrate latest advances knowledge bat elsevier ltd rights reserved
twin arginine translocation tat pathways well characterized bacteria chloroplasts genes encoding tatc protein found almost plant mitochondrial genomes date extensively investigated first time could demonstrated mitochondrial encoded tatc functional gene translated protein model plant arabidopsis thaliana tatb like subunit localized inner membrane also identified nuclear encoded essential plant growth development indicating plants potentially require tat pathway mitochondrial biogenesis
objective normalization mrna data calculation mrna expression values comparable different experiments major issue biomedical orthopaedic rheumatology research single gene technologies northern blotting conventional quantitative polymerase chain reaction qpcr large scale gene expression experiments study tested several established normalization methods effects gene expression measurements method five standard normalization strategies applied previously published data set comparing peripheral central late stage osteoarthritic cartilage samples results different normalization procedures profound effects distribution well significance values gene expression levels applied normalization procedures except median absolute deviation scaling showed bias towards regulation genes visualized volcano plots interest values much depending normalization procedure fold changes ten commonly used housekeeping genes showed significant variability different specimens investigated gene expression analysis cdna arrays confirmed genes qpcr conclusion study documents much normalization strategies influence outcome gene expression profiling analysis detection regulated genes different normalization approaches significantly change values fold changes large number genes thus vital importance check every individual step gene expression data analysis appropriateness use global robustness quality measures analyzing individual outcomes help estimating reliability final microarray study results osteoarthritis research society international published elsevier ltd rights reserved
iodine biologically important trace element behaviour environment human metabolism determined type iodine species takes part chemical reactions knowledge concentrations necessary understand describe iodine reaction paths separation procedure proposed quick determination common forms iodine iodide iodate ions molecular iodine organoiodine form chi procedure consists sequential sorption passing sample solution first solid phase extraction cartridge separate chi anion exchange resin cartridge retain latter two species loaded cartridge eluted separate sorbed pair species concentration determination resulting four solutions performed standard methods spectrophotometry tracer counting ion selective electrodes
differential gene expression three pairs trypanosoma cruzi populations clones susceptible resistant benznidazole investigated differential display representation differential expression rde genbank searches genes selected showed four sequences corresponded different hypothetical proteins others similar cruzi genes encoding mucin tcmuc dihydrolipoamide dehydrogenase tclipdh hexose transporter tcht ribosomal protein sequence analysis performed clones obtained rde approximately half clones encoded different hypothetical proteins half encoded proteins involved stress response antioxidant defence metabolism transporter proteins surface proteins ribosomal proteins others mrna levels eight cruzi genes obtained rde analysed northern blotting confirm differential expression sequences six eight genes tclipdh tcht tcfesod iron superoxide dismutase tchsp tchsp heat shock protein thiol transferase mrna levels drug resistant cruzi population least twice susceptible population analysis tchsp showed although levels tchsp mrna four fold higher cruzi resistant population corresponding increase observed levels tchsp protein expression results suggest tchsp directly associated cruzi drug resistance phenotype elsevier rights reserved
glcnacylation monosaccharide modification residue acetylglucosamine glcnac attached serine threonine moieties nuclear cytoplasmic proteins glcnacylation dynamically regulated glcnac transferase ogt glcnacase oga increasing evidence suggests glcnacylation involved variety human cancers however exact role glcnacylation tumor progression remains unclear show glcnacylation accelerates oncogenic phenotypes gastric cancer first cell models increased decreased glcnacylation constructed ogt overexpression downregulation oga activity specific inhibitor thiamet silence ogt mtt assays indicated glcnacylation increased proliferation gastric cancer cells soft agar assay transwell assays showed glcnacylation significantly enhanced cellular colony formation migration invasion vitro akt activity stimulated upregulation phosphorylation ser mediated elevated glcnacylation enhanced cell invasion thiamet treatment suppressed pik inhibitor although cell invasion induced thiamet reduced akt shrna still higher comparison control cells akt shrna alone akt overexpression promoted thiamet induced cell invasion results suggested glcnacylation enhanced oncogenic phenotypes possibly partially involving pik akt signaling pathway international union biochemistry molecular biology inc volume number pages
lungs constantly exposed external environment addition harmless particles also contains pathogens allergens toxins order maintain tolerance induce immune response immune system must appropriately handle inhaled antigens lung dendritic cells dcs essential maintaining delicate balance initiate immunity required without causing collateral damage lungs due exaggerated inflammatory response detailed understanding phenotype function immune cells dcs human blood knowledge cells less accessible tissues lungs much limited since studies human lung tissue samples especially healthy individuals scarce work presents strategy generate detailed spatial phenotypic characterization lung tissue resident dcs healthy humans undergo bronchoscopy sampling endobronchial biopsies several small biopsies collected individual subsequently embedded ultrafine sectioning enzymatically digested advanced flow cytometric analysis outlined protocols optimized yield maximum information small tissue samples steady state conditions contain low frequency dcs present work focuses dcs methods described directly expanded include immune cells interest found mucosal lung tissue furthermore protocols also directly applicable samples obtained patients suffering pulmonary diseases bronchoscopy part establishing diagnosis chronic obstructive pulmonary disease copd sarcoidosis lung cancer
absence markers inflammation cerebrospinal fluid csf commonly predicts absence herpes simplex virus hsv central nervous system cns infection consequently multiple authors proposed validated criteria deferring hsv pcr testing csf immunocompetent hosts normal csf white blood cell protein levels cells years old hiv organ transplant adoption criteria may erroneously exclude hsv infected persons necessary diagnostic test alternatively reduce costs associated hsv tests minimal effect patient care little known cost effectiveness approach decision analysis model developed evaluate adoption criteria screening hsv tests csf estimates input parameter values combined available literature multiyear multisite review two largest health care systems united states adoption criteria screen hsv test need proved cost effective less patients deferred testing truly hsv cns infection similar prior studies none deferred cases hsv encephalitis adoption criteria united states would save estimated million million million annually model calculations remained robust variation test cost prevalence hsv infection random variation study assumptions adoption criteria screen hsv pcr tests csf represents cost effective approach
fourteen novel miniature inverted repeat transposable element mite families found florida carpenter ant genome camponotus floridanus constitute approximately entire genome analysis insertion time showed members mites inserted host genome less million years ago addition association mites noncoding regions genes floridanus random interestingly autonomous partner named cftec responsible amplification mites also found floridanus meanwhile present evidence based searches publicly available databases autonomous element widespread animals moreover structure phylogenetic analyses supported tecs might represent novel cade transposons intermediate classic cacta transposon trcs finally transposition mechanism impact host genome evolution also discussed
background mechanisms involved amplification mast cell response anaphylaxis unclear mouse models anaphylaxis demonstrate critical involvement neutrophils innate immune cells highly abundant peripheral blood rapidly activated trigger local systemic inflammation objective investigate neutrophil activation peripheral blood acute human anaphylaxis methods patients presenting emergency department anaphylaxis underwent blood sampling upon enrolment three subsequent time points traditional anaphylaxis biomarkers histamine mast cell tryptase measured elisa immunocap respectively plasma myeloperoxidase concentrations measured elisa serum soluble cdl concentrations cytometric bead array compared healthy controls results patients severe anaphylaxis histamine positive mast cell tryptase positive enrolment myeloperoxidase concentrations fold higher moderate severe patients respectively compared healthy controls remained stable first following symptom onset enrolment soluble cdl lower moderate severe patients respectively healthy controls stable first associations myeloperoxidase soluble cdl concentrations either histamine mast cell tryptase concentrations conclusions clinical relevance results provide compelling evidence involvement neutrophils acute human anaphylaxis suggesting activated early reaction regardless mast cell activation important finding increases understanding basic mechanisms anaphylaxis necessary precursor improving treatment prevention
purpose review although chronic rhinosinusitis nasal polyps asthma allergy share common inflammatory mechanisms evidence cause effect relationship review present new studies investigating complex immunology links diseases advances new therapies well evidence regarding indication timing surgery especially complex cases highlighted recent findings new studies endotyped patients effort describe exact inflammatory profile phenotype whereas described cytokines seem play significant role amplification inflammation directly via innate lymphoid cells new mabs block specific cytokines pathways developed seem show reduced asthma severity well improved sinonasal outcomes moreover shown operating early course disease leads bigger improvements snot outcomes also reduced asthma incidence postoperatively refractory cases summary applying data current studies clinical practice could better manage refractory cases asthma polyps medically surgically treatment patient centered demands multidisciplinary team approach airway diseases
presence pesticide residues food public health problem exposure substances daily life could serious effects intestine first organ come contact food contaminants present study investigated impact low dose day oil pesticide chlorpyrifos cpf community structure diversity metabolic response human gut microbiota using shime model six reactors representing different parts gastrointestinal tract last three reactors representing colon inoculated mixture feces human adults three time points studied immediately first dose cpf days cpf oil administration using conventional bacterial culture molecular biology methods showed cpf oil affect gut microbiota greatest effects counts culturable bacteria increase enterobacteria bacteroides spp clostridia counts decrease bifidobacterial counts fermentative activity colon segment dependent results suggest cpf oil treatment affects gut microbiota although discordance culture dependent culture independent analyses changes shime compartment specific iii changes associated minor alterations production short chain fatty acids lactate
fever worldwide zoonotic infection caused obligate intracellular bacterium coxiella burnetii course acute chronic disease series describes cases acute fever admitted portuguese university hospital cases presented hepatitis epidemiological history diagnosis done pcr majority serology pcr serological tests negative initial period disease molecular biology methods polymerase chain reaction extremely important acute disease allowing timely diagnosis treatment authors
new cytochrome gene cypg identified differentially expressed gene diapausing post diapausing pharate first instar larvae wild silkmoth antheraea yamamai using subtractive cdna hybridization cdna sequence cypg open reading frame nucleotides encoding amino acid residues sequence analysis putative cypg protein disclosed motif fxxgxrxcxg essential heme binding cytochromes hybridization situ demonstrated predominant expression cypg integument pharate first instar larvae northern blotting analysis showed intensive signal initiation diapause weak expression throughout periods pre diapause post diapause including larval development results indicate cypg strongly associated diapause pharate first instar larvae elsevier ltd rights reserved
background definitive diagnostic criteria follow strategies long syndrome lqts children borderline long interval lqt methods results retrospectively evaluated clinical course genetic testing results corrected interval qtc lqts score school aged children years old lqt qtc points genetic testing results positive patients high intermediate low probabilities lqts respectively maximum mean qtc follow significantly differed among categories probability lqts minimum qtc however qtc rest recovery point exercise stress testing dramatically changed last followup consequently probability lqts changed half patients conclusions lqts score reasonable indicator evaluating school aged children lqt patients low lqts score appear low risk cardiac events however lqts score change follow therefore doubt concern patients lqt preferable continue following guidelines follow strategies desired lqt
gangliosides important signaling molecules cell membrane processed several enzymes deficiencies enzymes cause human lysosomal storage diseases building understanding pathways glycosphingolipid catabolism requires methods analysis enzymatic activities agm derived fret probe synthesized chemoenzymatically detection quantitation range ganglioside degrading enzymes cell lysates living cells first substrate enables ratiometric fluorogenic assay sphingolipid ceramide ndeacylase endoglycoceramidase detect localize neuraminidase activity living cells therefore valuable tool building better understanding membrane confined enzymology also enables robust reliable assay ganglioside degrading enzymes microtiter plate thus opening door screening novel engineered biocatalysts new inhibitors
rotavirus rva causes acute diarrhea children well animals part crosssectional study children less years age hospitalized acute diarrhea vietnam month period fecal specimens contained rva either study undertaken characterize strains remained untypeable complete genotypes rotavirus positive specimens strains possessed common human rva genotypes sequencing initially untypeable specimens revealed presence two unusual strains designated possessing respectively genotype constellation phylogenetic trees suggested origin porcine rva strain causing diarrhea month old girl whereas genotype constellation phylogenetic trees suggested origin rva strain artiodactyl origin cattle sheep goats causing diarrhea month old boy study showed rva strains animal host origin necessarily attenuated humans hypothesis may postulated spike proteins helped virus replicate human intestine efficient onward human human spread crossing host species barrier may require virus obtain additional features evidence widespread transmission limited sampling performed study period wiley periodicals inc
soya bean glycine max merr sought oil protein components genetic approaches add value either component ongoing efforts soya bean breeding molecular biology programmes former primary vegetable oil consumed world hence primary usage direct human consumption means increase utility feed applications thereby expanding market soya bean coproducts investigated simultaneous displacement marine ingredients aquafeeds soya bean based protein high omega fatty acid soya bean oil enriched alpha linolenic stearidonic acids steelhead trout oncorhynchus mykiss kampachi seriola rivoliana communicated herein aquafeed formulations major reduction marine ingredients translates total omega fatty acids harvested flesh building findings subsequent efforts directed towards genetic strategy would translate prototype design optimal identity preserved soya bean based feedstock aquaculture whereby multigene stack approach targeted synthesis two value added output traits eicosapentaenoic acid ketocarotenoid astaxanthin introduced crop end systematic introduction seven transgenic cassettes soya bean molecular phenotypic evaluation derived novel events described
eicosanoids derive essential polyunsaturated fatty acids pufa play crucial roles immunity development reproduction however potential links dietary pufa supply eicosanoid biosynthesis poorly understood especially invertebrates using daphnia magna bacterial parasite pasteuria ramosa model system studied expression genes coding key enzymes eicosanoid biosynthesis genes related oogenesis response dietary arachidonic acid eicosapentaenoic acid parasite exposed non exposed animals gene expression related cyclooxygenase activity especially responsive dietary pufa supply parasite challenge indicating role prostanoid eicosanoids immunity reproduction vitellogenin gene expression induced upon parasite exposure food treatments suggesting infection related interference host reproductive system findings highlight potential dietary pufa modulate expression key enzymes involved eicosanoid biosynthesis reproduction thus underpin idea dietary pufa supply influence invertebrate immune functions host parasite interactions elsevier inc rights reserved
aldosterone shown stimulate renal tgf beta expression however mechanisms aldosterone induced tgf beta expression clearly determined mesangial cells examined role extracellular signal regulated kinase erk jun terminal kinase jnk activator protein aldosterone induced tgf beta expression rat mesangial cells tgf beta protein conditioned medium released rat mesangial cells measured sandwich elisa tgf beta mrna expression analyzed northern blotting dna binding activity measured emsa erk jnk activity analyzed western blotting aldosterone significantly stimulated tgf beta protein production tgf beta mrna expression mesangial cells dose dependent manner aldosterone significantly increased dna binding activity mesangial cells pre treatment cells inhibitor curcumin blocked aldosterone induced dna binding activity well aldosterone induced tgf beta production aldosterone increased phosphorylation erk jnk mesangial cells pre treatment cells erk inhibitor jnk inhibitor significantly inhibited aldosterone induced erk jnk activity subsequently tgf beta production respectively conclude aldosterone induced tgf beta expression mesangial cells regulated erk jnk intracellular signaling pathways
cloned novel transcriptional repressor protein termed simirp high homology simirp belong poz domain kruppel finger pok family proteins using luciferase assay system found simirp also transcriptional repressor activity like northern blotting quantitative pcr showed simirp expressed testes highest level situ hybridization testes showed simirp expressed spermatocytes portion seminiferous tubules contrast expression spermatocytes ubiquitous seminiferous tubules using cos cells observed simirp localized cytoplasm contrast localized nucleus interestingly transfection simirp induced changes localization patterns proteins elsevier inc rights reserved
background impaired function endothelial nitric oxide synthase enos involved pathologic processes erectile dysfunction three functional polymorphisms tandem repeat intron nos gene encodes enos associated clinical characteristics several populations aim investigate effect variations nos phenotypes response sildenafil han chinese population methods case control study enrolled patients age matched healthy men medical history laboratory data collected severity response sildenafil assessed using five item international index erectile function iief score routine polymerase chain reaction sanger sequencing used genotype three polymorphisms nos outcomes frequencies alleles genotypes haplotypes loci patients controls iief scores patients carrying risk non risk genotype frequencies risk non risk genotypes patients different ages onset responses sildenafil assessed results frequencies drinkers diabetic hyperlipidemic patients group higher age matched control group distributions alleles genotypes haplotypes nos polymorphisms significantly different patients controls increased risk earlier onset observed risk genotype carriers odds ratio patients risk genotype exhibited lower iief scores patients non risk genotype influence genotype response sildenafil observed clinical translation detectable effect nos functional polymorphisms suggests application potential molecular biomarker predicting susceptibility severity han chinese population strengths limitations study provides strong evidence nos functional variation independent risk factor han chinese population confirmed larger cohorts considering limited number subjects study conclusion results first identify clear association nos functional variation susceptibility age onset severity han chinese population
efficient transformation system developed centaurea montana cultivation leaf explants agrobacterium tumefaciens strain agl contained plasmid harboring isopentenyl transferase gene control developmentally regulated atmyb promoter arabidopsis thaliana gene encoding hygromycin resistance control cauliflower mosaic virus camvs promoter total explants infected agrobacterium shoots regenerated resulting overall transformation efficiency molecular analyses including pcr southern blotting pcr performed plants confirm chromosomal integration expression transgene phenotypically normal transformed plants transformation montana also performed using tumefaciens supervirulent strain eha harboring beta glucuronidase gus reporter gene expression gus gene putative transgenics confirmed using histochemical gus assay
intracellular delivery functional gene nucleic acid sequence specifically knockdown harmful gene potential approach precisely treat critical human disease intensive efforts last decades led development number viral non viral synthetic vectors however ideal delivery tool terms safety efficacy yet established recently developed sensing inorganic nanocrystals carbonate apatite efficient cell targeted delivery gene gene silencing rna show addition low level fluoride particle forming medium facilitates robust increase transgene expression following post incubation particles hela cells confocal microscopic observation southern blotting prove cytoplasmic existence plasmid dna delivered likely formed fluoridated carbonate apatite particles degradation plasmid dna presumably cytoplasmic nucleases noticed following delivery apatite particles alone beneficial role fluoride enhancing carbonate apatite mediated gene expression might due buffering potential generated fluoridated apatite endosomal acidic environment thereby increasing half life delivered plasmid dna elsevier inc rights reserved
investigations environmental microbial communities crucial discovery populations capable degrading hazardous compounds may lead improved bioremediation strategies goal study identify microorganisms responsible aerobic benzene degradation coal tarcontaminated groundwater benzene degradation monitored laboratory incubations well waters using gas chromatography mass spectrometry stable isotope probing sip experiments using benzene enabled obtain clabled community dna rrna clone libraries identified gammaproteobacteria betaproteobacteria active benzene metabolizing microbial populations subsequent cultivation experiments yielded nine bacterial isolates grew presence benzene five confirmed laboratory cultures grow benzene isolated benzene degrading organisms genotypically similar rrna gene nucleotide identities organisms identified sip experiments one isolate variovorax mak investigated expression putative aromatic ring hydroxylating dioxygenase rhd hypothesized involved benzene degradation microcosm experiments using variovorax mak revealed fold increase rhd vapar expression establishing link gene benzene degradation furthermore addition variovorax mak microcosms prepared site waters accelerated community benzene degradation correspondingly increased rhd gene expression microcosms using uninoculated groundwater quantitative pcr assays rrna rdh genes showed variovorax present responsive added benzene data demonstrate convergence cultivation dependent independent techniques boost understandings active populations functional genes complex benzene degrading microbial communities importance benzene human carcinogen whose presence contaminated groundwater drives environmental cleanup efforts although aerobic biodegradation benzene long established knowledge identity microorganisms complex naturally occurring microbial communities responsible benzene biodegradation evaded scientific inquiry many decades applied molecular biology technique known stable isotope probing sip microbial communities residing contaminated groundwater samples identify community members active benzene biodegradation complemented approach isolating growing laboratory bacterium representative bacteria found using sip characterization isolated bacterium enabled track expression key gene attacks benzene pure cultures bacterium naturally occurring groundwater microbial community work advances information regarding documentation microbial processes especially populations genes contribute bioremediation
early diagnosis inborn errors metabolism commonly performed biofluid metabolomics detects specific metabolic biomarkers whose concentration altered due genomic mutations identification new biomarkers major importance biomedical research usually performed data mining metabolomic data recent publication genome scale network model human metabolism present novel computational approach systematically predicting metabolic biomarkers stochiometric metabolic models applying method predict biomarkers disruptions red blood cell metabolism demonstrates marked correlation altered metabolic concentrations inferred kinetic model simulations applying method genome scale human model reveals set metabolites whose concentration predicted either elevated reduced result possible dysfunctional enzymes method predictions shown significantly correlate known disease biomarkers predict many novel potential biomarkers using method prioritize metabolite measurement experiments identify new biomarkers provide order fold increase biomarker detection performance molecular systems biology april doi msb
zoonotic cestode echinococcus ortleppi lopez neyra soler planas mainly transmitted dogs cattle occurs worldwide found sporadically regions notable exception parts southern africa south america epidemiology little understood extent intraspecific variability unknown analysed present study genetic diversity among ortleppi isolates sub saharan africa europe south america using complete mitochondrial cox nad dna sequences genetic polymorphism within loci revealed cox six nad haplotypes respectively haplotypes concatenated genes presence haplotypes correlated geographical regions one haplotype wider spread eastern southern africa intraspecific microvariance low comparison echinococcus granulosus sensu stricto despite wide geographic range examined isolates addition various sub populations showed subtle deviation neutrality mostly genetically differentiated first insight population genetics enigmatic cattle adapted echinococcus ortleppi therefore provides baseline data biogeographical comparison among ortleppi endemic regions tracing translocation paths
connectivity populations influences dynamics genetic structuring species study explored connectivity patterns marine species long distance dispersal edible common sea urchin paracentrotus lividus focusing mainly adriatic ionian basins central mediterranean applied multidisciplinary approach integrating population genomics based single nucleotide polymorphisms snps obtained rad samples lagrangian simulations performed biophysical model larval dispersal detected genetic homogeneity among eight population samples collected focal adriatic ionian area whereas weak significant differentiation found respect two samples western mediterranean france tunisia result affected putative outlier loci identified dataset lagrangian simulations found significant potential larval exchange among eight adriatic ionian locations supporting hypothesis connectivity lividus populations area peculiar pattern emerged comparison results obtained published lividus cytochrome cytb sequences latter revealing genetic differentiation geographic area despite smaller sample size lower power detect differences comparison studies conducted using nuclear markers species similar pelagic larval durations adriatic ionian locations indicates species specific differences genetic connectivity patterns warns generalizing single species results entire community rocky shore habitats
long non coding rnas lncrnas emerged recently important factors regulating fundamental biological processes alterations expression function lncrnas observed promote tumor formation progression metastasis although downregulation expression levels let lncrna several tumors reported role gastric cancer remains unknown aim present study investigate expression function let gastric cancer development expression levels let pairs gastric cancer adjacent non tumor tissues detected reverse transcription quantitative polymerase chain reaction qpcr addition let expression gastric cancer cell lines analyzed qpcr assay analysis furthermore impact let cell proliferation migration apoptosis detected using cell counting kit wound scratch elisa assays respectively results demonstrated expression level let downregulated gastric cancer tissues cell lines sgc mgc compared normal tissues normal human gastric epithelial cell line ges restoration let expression using synthesized recombinant overexpression vector transfected sgc mgc cells significantly inhibited cell proliferation migration promoted cell apoptosis vitro present study first demonstrate let may function tumor suppressor gastric cancer results indicate let may promising biomarker therapeutic target gastric cancer
unicellular freshwater alga micrasterias denticulata exceptional organism due complex star shaped highly symmetric morphology thus attracted interest researchers many decades member streptophyta micrasterias genetically closely related higher land plants shares common features many physiological cell biological aspects facts together considerable cell size tom modest cultivation conditions uncomplicated accessibility particularly microscopic techniques make micrasterias well suited cell biological plant model system review focuses particularly cell wall formation composition dictyosomal structure function cytoskeleton control growth morphogenesis well ionic regulation signal transduction also shown recent years micrasterias highly sensitive indicator environmental stress impact heavy metals high salinity oxidative stress starvation stress induced organelle degradation autophagy adaption detoxification mechanisms moved center interest investigated modern microscopic techniques analytical electron microscopy well biochemical physiological molecular approaches review intended summarize discuss important results obtained micrasterias last years compare results similar processes higher plant cells
imidazole structure involved formation several compounds human metabolism including methyl imidazole imidazole acetic acid histidine histamine carnosine homocarnosine number compounds widely distributed metabolites histamine present basophil mast cells well present muscle brain cells work advances detailed proposals metabolic chemical reactions produce decompose compounds activity compounds detrimental allergic medical conditions discussed origin medical observations imidazole based medical compound known cimetidine discussed canadian society clinical chemists published elsevier inc rights reserved
patients decompensated cirrhosis high morbidity commonly hospitalized acute kidney injury examined serum levels siglec transmembrane receptor regulates immune activity biomarker mortality patients cirrhosis acute kidney injury serum siglec measured hospitalized patients cirrhosis acute kidney injury well reference groups acute liver injury acute kidney injury cirrhosis without acute kidney injury sepsis without liver disease clinical characteristics subsequent outcomes examined using univariate multivariable analyses according initial siglec levels primary outcome death days one hundred twenty eight subjects included cirrhosis acute kidney injury used primary analysis average model end stage liver disease meld score serum creatinine time siglec measured adjusting age meld score high serum siglec level predicted mortality hazard ratio difference siglec levels etiology aki addition serum siglec meld score improved discrimination day mortality category free net reclassification index integrated discrimination increment serum siglec associated increased mortality among hospitalized patients cirrhosis acute kidney injury addition siglec meld score may increase discrimination predict day mortality
natural nucleic acids pairing artificial nucleotides influenced tautomerism different placements protons heterocyclic nucleobase changing patterns hydrogen bonding determine replication fidelity example major tautomer isoguanine presents hydrogen bonding donor donor acceptor pattern complementary acceptor acceptor donor pattern methylisocytosine however minor tautomer isoguanine presents hydrogen bond donor acceptor donor pattern complementary thymine calculations crystallography physical organic experiments suggest tautomeric ambiguity might fixed replacing nitrogen isoguanine unit test hypothesis prepared triphosphate deoxy deazaiso guanosine used pcr estimate effective tautomeric ratio seen taq dna polymerase deazaisoguanine fidelity per round similar analogous pcr isoguanine gave lower fidelity per round similar results confirm hypothesis polymerases deepen understanding role minor groove hydrogen bonding proton tautomerism natural expanded genetic alphabets major targets synthetic biology
cytochrome enzyme cypd thought play role human metabolism fluvoxamine levomepromazine potent inhibitor cypd coadministered low dosage levomepromazine fluvoxamine patients found low dosage levomepromazine effective counteracting fluvoxamine induced insomnia increase plasma fluvoxamine levels results suggest inhibition cypd levomepromazine little effect fluvoxamine metabolism therefore low dosage levomepromazine used hypnotic agent appears effective safe coadministered fluvoxamine since pilot study without placebo control double blind placebo controlled study needed confirm preliminary findings int clin psychopharmocol lippincott williams wilkins
gnathostomiasis foodborne zoonotic parasitosis caused gnathostoma nematodes caused significant public problems worldwide molecular biology limited purpose study decode complete mitochondrial genomes gnathostoma nipponicum gnathostoma compare sequences gnathostoma species complete genome sequences amplified long range pcr determined subsequent primer walking complete genomes nipponicum gnathostoma respectively two genomes contain protein coding genes pcgs ribosomal rna genes transfer rna genes gene order transcription direction spinigerum doloresi sequence difference across entire genomes varied nipponicum gnathostoma spinigerum doloresi japan china isolates phylogenetic analyses bayesian inference using concatenated amino acid sequences pcgs showed nipponicum gnathostoma two distinctive species gnathostoma nipponicum closely related gnathostoma spinigerum mtdna datasets provide abundant resources novel markers used studies molecular epidemiology diagnosis gnathostoma spp elsevier rights reserved
introduction preeclampsia life threatening pregnancy disorder characterized wide spread endothelial dysfunction placental factors circulating maternal blood believed cause endothelial dysfunction previous study identified htra placenta specific serine protease released maternal circulation significantly increased early onset study examined impact htra expression endothelial genes related vessel biology using human umbilical vein endothelial cells huvecs model methods huvecs treated htra highest concentration seen circulation analysed endothelial cell biology pcr array containing genes htra induced changes validated real time pcr elisa time dose dependency results high levels htra significantly altered expression range genes related inflammation vaso activity angiogenesis cell adhesion platelet activation coagulation particular pro inflammatory genes ptgs cox significantly increased htra protein huvec media also drastically increased thbd anticoagulant factor reported increased significantly regulated htra contrast thbs involved many regulatory processes endothelial cell biology severely regulated htra discussion htra significantly increased inflammatory responses huvecs altered expression number genes important vessel biology data suggest placenta derived htra increased circulation potential causal factor endothelial dysfunction authors published elsevier ltd
gene expression level immune system genes evaluated different lifecycle stages white shrimp litopenaeus vannamei gene coding pattern recognition protein glucan binding protein high density lipoprotein bgbp haemocytes effector proteins peroxinectin clotting protein antibacterial proteins lysozyme penaeidin prophenoloxidase propo small heat shock protein studied expression bgbp detected nauplii substage beyond except peroxinectin constitutively transcribed throughout different substages lysozyme penaeidin propo also detected throughout experimental stages except eggs nauplii lysozyme transcribed shrimp substages zoea beyond penaeidin exhibited lowest expression level genes evaluated however transcription similar adults post larvae forward propo higher transcribed last post larval substages heat shock protein detected shrimp substages exhibited higher expression substages compared first larval substages evidence suggests shrimp immune system partially activated early larval substages completed shrimp undergone metamorphic substages
study synthetic vaccine nanoparticles svnps efficiently targeted lymph nodes immune responses foreign antigens primed developed enhance antitumor immunity size surface character amination poly gamma glutamic acid based svnps selected effective loading delivery migration retention model tumor antigen ova toll like receptor agonist poly immune cells lymph nodes antigen presenting cells treated svnp ova svnp showed higher uptake ova poly higher secretion inflammatory cytokines tnf alpha type interferon ifn alpha ifn beta treated ova poly alone vivo analysis revealed higher levels activation markers inflammatory cytokines type ifns lymph nodes mice immunized svnp compared mice groups svnp treated mice showed significantly greater vivo natural killer cell expansion activation cells cell response inf gamma cells innate adaptive immunity respectively preventive therapeutic vaccination ova tumor bearing mice using simultaneous injection svnp ova svnp induced higher antitumor immunity inhibited tumor growth elsevier ltd rights reserved
background gut microbiota associated several metabolic diseases including obesity type diabetes affects host physiology distinct mechanisms microbiota produces vast array metabolites signal host cells intestine well distal organs scope review enteroendocrine cells acts chemo sensors intestinal milieu expressing large number receptors respond different metabolites nutrients signal host wide variety hormones however enteroendocrine cells differ along length gut terms hormones expressed receptor repertoire also microbial ecology dietary substrates differ along length gut providing evidence unique functions specific subpopulations among enteroendocrine cells review gut microbiota interacts cells small large intestine resulting effects host major conclusions microbial metabolites sensed differently specific subpopulations enteroendocrine cells furthermore hormones glp different functions originating small intestine colon article part special issue microbiota author published elsevier gmbh
objective review contemporary knowledge hcg molecule isoforms importance glycosylation biologic variants glycoforms hcg different biological activities functions related control menstrual cycle conception gestation well gynaecologic non gynaecologic malignancies design review setting department obstetrics gynaecology university hospital olomouc methods present experience overview recent literature molecular biology clinical biochemistry clinical practice conclusion recent knowledge role hcg glycosylation physiologic pathologic events female organism provide better understanding regulation processes like ovulation operation pituitary hcg implantation hemochorial placentation invasivity hyperglycosylated hcg biologic variants isoforms hcg important prediction certain pathologies pregnancy prenatal screening inborn errors free beta hcg well treatment infertility
production hybrid seeds pursuing heterosis breeding many crops accomplished using male sterile lines however crops valuable male sterile lines due instability male sterility absence restorer system study male sterile lines induced using two component system extracellular ribonuclease barnase cleaves two inactive yet complementary fragments designated components controlled promoter transferred tomato inbred line yellow tomato agrobacterium method southern blotting identified transgenic plants transgenic plants obtained vegetative phenotypes plants similar wild type capable producing viable pollen grains normal fruit seeds indicating barnase lost function split two partial fragments self pollination homozygous progenies transgenic plants chosen cross barnase could reconstituted expressed cell caused hybrid plants produce collapsed pollen grains viability thus male sterile plants obtained stamens male sterile plants shorter wild type plants pcr detection demonstrated male sterile plants contained barnase male fertile plants male sterile plants crossed male fertile inbred lines result showed hybrid plants capable producing normal fruit seeds pollen grain fertility restored segregation ratio fragments showed among hybrid plants conclusion results verified male sterility could generated two component system used hybrid seed production male sterile plant inbred line showed heterotic comparing parents system needs breed restoration line
according lavoisier life combustion extent humans adapt changes food intake adaptive thermogenesis turning rate heat production energy deficit conserve energy turning overnutrition dissipate excess calories one controversial issues nutritional sciences past years debate nowadays whether adaptive thermogenesis exists rather quantitative importance weight homoeostasis clinical relevance pathogenesis management obesity uncertainties likely persist foreseeable future primarily limitations unobtrusively measure changes energy expenditure body composition high enough accuracy precision particularly even small inter individual variations thermogenesis dynamic systems long term important determining weight maintenance obesity weight regain others paper reviews considerable body evidence albeit fragmentary suggesting existence quantitatively important adaptive thermogenesis several compartments energy expenditure response altered food intake discusses various limitations lead underestimations assessment including definitional semantics technical methodological analytical statistical role adaptive thermogenesis human weight regulation likely remain concept strictly quantifiable entity foreseeable future evolution concept continues fuel exciting hypothesis driven mechanistic research contributes advance knowledge human metabolism bound result improved strategies management healthy body weight
introduction myasthenia gravis frequent acquired disorder neuromuscular transmission majority cases pathogenic antibodies components postsynaptic muscle endplate membrane detected recent years significant advances pathophysiological understanding therapy disease areas covered pubmed searches conducted term myasthenia gravis cross referenced terms immunology subgroups antibody ocular thymoma treatment thymectomy additionally summarized current state immunopathology therapy expert commentary immunological research defined new target antigens postsynaptic neuromuscular junction along clinical features allow refined definition disease subgroups overall prognosis myasthenia gravis best possible symptomatic immunosuppressive supportive treatment good new immunomodulatory treatment options developed patients respond well first line therapy patients individually adapted long term drug therapy needed
background objectives mechanism glucocorticoid induced apoptosis fully understood early predictive assays based apoptotic markers clinical outcome acute lymphoblastic leukemia scarce aim study characterize involvement bcl family members caspase activation dexamethasone dex induced apoptosis design methods primary childhood samples pre cell line cell line ccrf cem used involvement bcl family members evaluated flow cytometry immunocytochemistry western northern blotting apoptosis analyzed annexin tmre staining caspase activity evaluated fluorometric assay results dex induced significant regulation anti apoptotic bcl family members bcl bcl differential activation pro apoptotic bak bax loss delta psi cytochrome release dex induced apoptosis also involved early activation caspases inhibition caspase activity however protect dex induced bak bax activation loss delta psi cell death primary samples dex induced apoptosis associated activation bax clown regulation bcl bcl furthermore vivo dex sensitivity associated early treatment response polychemotherapy interpretation conclusions differential regulation pro anti apoptotic bcl family members appears key event execution dex induced apoptosis cell lines also indicates role proteins primary cells
many studies shown metal ions may lead oxidative stress biological systems accordingly dna damage protein modification enzyme inhibition activation lipid peroxidation many effects may occur living organisms many different formations metal ions may enter human cells along water air various foods humans negatively affected conditions either directly indirectly effects may cause irreversible damage human metabolism study toxicological effects heavy metals carbonic anhydrase enzyme activity gilthead sea bream liver investigated carbonic anhydrase enzyme purified via affinity chromatography specific activity kinetics characteristic properties optimum stable optimum temperature activation energy activation enthalpy delta max determined purified enzyme sds polyacrylamide gel electrophoresis showed single band molecular weight subunit approximately kda inhibited enzyme activity vitro type inhibition values metals calculated lineweaver burk plots respectively metals noncompetitive inhibitors authors published elsevier rights reserved
carbonic anhydrase catalyzes reversible reaction hydration bicarbonate dehydration bicarbonate back sequestration industrial processes breathing air may require large amount highly active stable therefore objectives present study purify large amounts cheap easily accessible source enzyme characterize enzymatic kinetic properties soluble immobilized enzyme recovered pure enzyme specific activity protein single step using sheep blood lysates slaughter house waste products specific inhibitor affinity chromatography since affinity pure showed anhydrase esterase activities measured esterase activities enzymology michaelis menten constant optimum activation energy thermal stability soluble enzymes kcal mol respectively immobilization enzyme affigel efficient purified enzyme immobilized immobilized enzyme showed activation energy kcal mol suggesting better preference substrate immobilized enzyme comparison soluble enzyme contrast soluble enzyme immobilized enzyme showed relatively higher activity results concluded shift profile toward acidic due modification lysine residues involved immobilization process immobilized enzyme stable higher temperatures showed highest activity degrees activity immobilized enzyme flow reactor min flow rate unaffected collectively results present study suggested application blood lysate waste animal slaughterhouses purification homogeneous enzyme capture flow reactor elsevier ltd rights reserved
active membrane transporters dynamic molecular machines catalyse transport across membrane coupling solute movement source energy atp secondary ion gradient central question many active transporters concerns mechanism transport coupled source energy transport process associated energetic coupling involve conformational changes transporter efficient transport conformational changes must tightly regulated must link energy use movement substrate across membrane present review discusses active transport using well established energetic framework enzyme mediated catalysis particular membrane transport systems viewed ensembles consisting low energy high energy conformations transport process involves binding interactions selectively stabilize higher energy conformations way promote conformational changes system coupled decreases free energy substrate translocation major facilitator superfamily secondary active transporters used illustrate ideas expanded primary active transport mediated abc atp binding cassette import systems focus well studied maltose transporter
background specificity enzymology glycan sialylation poorly understood despite importance biological recognition results stgal structure determined substrate binding modeled probe active site specificity conclusion structure provides insights enzymatic basis glycan sialylation significance knowledge enzyme structure lead broader understanding enzymatic sialylation selective inhibitor design glycan structures glycoproteins glycolipids play critical roles biological recognition targeting modulation functions animal systems many classes glycan structures capped terminal sialic acid residues contribute biological functions either forming masking glycan recognition sites cell surface secreted glycoconjugates sialylated glycans synthesized mammals single conserved family sialyltransferases diverse linkage acceptor specificities examined enzymatic basis glycan sialylation animal systems determining crystal structures rat stgal enzyme creates terminal sialic acid linkages complex type glycans resolution crystals obtained enzyme preparations generated mammalian cells resulting structure revealed overall protein fold broadly resembling previously determined structure pig stgal including cmp sialic acid binding site assembled conserved sialylmotif sequence elements significant differences structure disulfide bonding patterns found outside sialylmotif sequences including differences residues predicted interact glycan acceptor computational substrate docking molecular dynamics simulations performed predict evaluate cmp sialic acid donor glycan acceptor interactions results compared kinetic analysis active site mutants comparisons structure pig stgal bacterial sialyltransferase revealed similar positioning donor acceptor catalytic residues provide common structural framework catalysis mammalian bacterial sialyltransferases
oenococcus oeni wine associated lactic acid bacterium lab responsible mostly wine malolactic fermentation mlf fastidious bacterium auxotrophic many amino acids slow growing possesses remarkable adaptability harsh physicochemical conditions reprogramme metabolic pathways enhance survival wine thus oeni instructive bacterial model investigating stress response mechanisms lab however lack appropriate techniques modify oeni genome hampered molecular studies species application recent advances molecular genetics promises provide better understanding regulation stress responses species future
actually happens inside genetic databases work upon data work become central tools science much known work goes inside vital infrastructures ethnographic explorations two world largest nucleotide sequence databases genbank european molecular biology laboratory embl bank reveal manifold goings like infrastructural work modest invisible routines build maintain vast interconnected suite bioinformational resources data curators construct organisms sulphuric sludge dataflow engineers self styled genetic information plumbers keep data deluge flowing data submissions support assistant manages make room care amidst deluge taken together data labours render tangible modest processual aspects data infrastructure also revealing databases situated lively spaces convergence inventively analysing data labours paves surprising ways encountering making sense databases data work practices natural history like specimen making curation continued means assembly sludge sheds light absences deletions mystify infrastructural maintenance work
leon springs pupfish cyprinodon bovinus endangered species currently restricted single desert spring separate captive habitat southwestern north america following establishment captive population wild stock wild population undergone natural population size fluctuations intentional culling purge genetic contamination invasive congener cyprinodon variegatus augmentation replacement wild fish captive stock severe population decline following recent introduction captive fish prompted examine whether captive wild populations differentiated short time isolated one another development divergent genetic morphologic traits populations could contribute diminished ability fish one location thrive examination genome wide single nucleotide polymorphisms morphologic variation revealed evidence residual variegatus characteristics contemporary bovinus samples however significant genetic morphologic differentiation detected wild captive populations might reflect local adaptation results indicate genetic physical characteristics diverge rapidly isolated subdivisions managed populations potentially compromising value captive stock future supplementation efforts case bovinus findings underscore need periodically inoculate captive population wild genetic material help mitigate genetic potentially morphologic divergence also highlight utility parallel morphologic genomic evaluation inform conservation management planning
study undertaken determine humans excrete amobarbital glucuronides glucosides urine oral dose amobarbital amobarbital glucuronides synthesized characterized reverse phase method using past column adjustment detection developed used quantification amobarbital glucosides glucuronides human urine amobarbital administered orally seven male subjects total urine collected period dosing filtration urine injected directly onto hplc column analyze presence metabolites previously identified amobarbital glucoside detected seven subjects amobarbital glucoside detected lower concentrations four subjects levels amobarbital glucosides detected evidence formation excretion amobarbital glucuronides amobarbital glucuronidation quantitatively significant pathway biodisposition amobarbital humans elsevier science
human bone marrow stromal cells hbmscs may contribute growth tyrosine kinase inhibitor tki resistant chronic myelogenous leukemia cml however certain differences biology cml philadelphia positive acute lymphoblastic leukemia little known role mechanism hbmscs growth tki resistant current study cultured hbmscs tki resistant sup next proliferation sup detected using cell counting kit additionally quantitative polymerase chain reaction flow cytometry used detect expression associated genes proteins present study explores role mechanism hbmscs growth tki resistant current study showed hbmscs promoted proliferation tki resistant shown increase cells phase cell cycle also found expression cyclins increased apoptosis inhibited upregulation anti apoptotic genes cell lymphoma bcl bcl extra large downregulation apoptotic genes bcl bcl associated protein caspases expression breakpoint cluster region bcr abelson murine leukemia viral oncogene homolog abl gene wnta wnt signaling pathway associated genes glycogen synthase kinase beta beta catenin cadherin phosphoinositide kinase transcription factors myc ephrin type fibroblast growth factor matrix metalloproteinase also increased furthermore expression drug resistance genes low density lipoprotein receptor multidrug resistanceasso ciated protein multi drug resistance gene increased expression anti oncogenes death associated protein kinase interferon regulatory factor decreased concluded hbmscs promote growth tki resistant aforementioned mechanisms therefore targeting hbmscs may promising approach preventing growth tki resistant
background mexico advanced pre elimination phase due significant reduction malaria cases since plasmodium vivax species transmitted last two decades malaria transmission mostly local isolated regions important gain insights impact control measures parasite population structure hence aim current study determine detailed changes vivax genetic diversity population structure based analysing gene encodes apical membrane antigen pvama analysis covered control pre elimination hypo endemic region southern mexico results pvamai sequences presently analysed grouped six periods three years showed low genetic diversity haplotypes resolved among dna sequences gradual decrease genetic diversity number mixed genotype infections intensity positive selection agreement parallel decline malaria cases time linkage disequilibrium increased three dimensional haplotype network revealed pvamai haplotypes separated mutational steps one another unsampled haplotypes temporal network seven haplotypes detected least two six time layers four distinct haplotypes evidenced pre elimination phase structure analysis indicated three subpopulations fluctuated time samples mixed ancestry pre elimination phase subpopulation drastically reduced admixture absent conclusions results suggest vivax southern mexico evolved based local adaptation three pseudoclonal subpopulations diversified regional level persisted time although varying frequency control measures climate events influenced number malaria cases genetic structure sharp decrease parasite diversity related genetic parameters pre elimination phase suggests malaria elimination possible near future results useful epidemiological surveillance
isolation high quality rna plant tissues one critical steps successful application diagnostic tests reverse transcription polymerase chain reaction pcr northern blotting microarray hybridization presence inhibitors secondary metabolites phenolic compounds rnases cause inaccurate undesirable results grapevine rich wide range metabolites interfere rna isolation point view researched six different total rna extraction methods leaves vitisvinifera find best one contribute purity high quality methods tested silica capture modified silica capture commercial kit new combined lithium chloride citric buffer rna quality analyzedspectrophotometrically nanodrop agarose gel electrophoresis pcr result clear suitable tna isolation protocol new combined method experienced named firstly terms rna purity concentration less time consuming isolation step achievement detection gysvd
liver pancreas critical organs maintaining whole body metabolism historically expansion adult derived cells organs vitro proven challenging turn hampered studies liver pancreas stem cell biology well roadblock disease modelling cell replacement therapies pathologies organs recently defined culture conditions described allow vitro culture manipulation adult derived liver pancreatic material review systems assess physiological relevance well potential utility biomedicine elsevier inc rights reserved
background recent works suggested possible link interleukin cell biology aimed study possible association serum detection response rituximab rtx rheumatoid arthritis patients different cohorts accurate enzyme linked immunosorbent assay elisa methods serum rheumatoid factor anti cyclic citrullinated peptide anti ccp high serum immunoglobulin levels assessed patients receiving first course rtx cohort observational study patients treated schedule routine care cohort univariate multivariate analyses identified factors associated european league rheumatism eular response weeks results week patients reached eular response cohorts respectively serum detectable patients combined cohorts presence anti ccp odds ratio confidence interval high serum igg detectable serum associated rtx response multivariate analysis combination three factors increased likelihood response rtx serum detection added seropositivity serum igg level patients three risk factors corresponding population responded rtx versus patients none three risk factors conclusion detectable serum may predict clinical response rtx independently synergistically auto antibodies serum igg level
recent advances basic medical sciences particularly cell biology genomics great promise future development aspects haematological practice also impinge hitherto neglected fields haematology including haematology involving care rapidly increasing number elderly patients complex problems haematological practice developing countries obtain maximum benefit new developments necessary review patterns training haematologists future every level short important try design develop various career pathways training haematologists including wish work full time basic research combine research clinical practice commit time clinical work teaching
biomaterial vaccines offer new capabilities exploited infectious disease cancer recently developed novel vaccine platform based self assembly immune signals immune polyelectrolyte multilayers ipems ipem vaccines electrostatically assembled peptide antigens nucleic acid based toll like receptor agonists tlras serve molecular adjuvants gold nanoparticles aunps coated ipems stimulate effector cytokine secretion vitro expand antigen specific cells mice investigated dose injection route choice molecular adjuvant impacts ability ipems generate cell immunity anti tumor response mice three injection routesintradermal subcutaneous intramuscularand three ipem dosing levels employed intradermal injection induced potent antigen specific cell responses routes level response dose dependent discovered vaccines generate durable memory indicated potent antigen specific cell recall responses mice challenged vaccine days prime boost immunization regimen common exogenous antigen melanoma model ipem vaccines slowed stopped tumor growth effectively equivalent mixed formulations ipems containing cpga tlrawere potent compared ipems containing polyic tlra findings demonstrate ability ipems enhance response several different classes vaccine cargos supporting ipems simple vaccine platform mimics attractive features nanoparticles using immune signals self assembled coated substrates biotechnol bioeng wiley periodicals inc
acyl homoserine lactones ahls metabolites mostly gram negative bacteria critical signaling molecules bacterial quorum sensing systems threshold concentrations ahls activate expression pathogenic genes induce diseases therefore reducing ahl concentrations key point disease control plants ahl lactonase expressed aiia widespread bacillus hydrolyze ahls present study cloned aiia bacillus subtilis pcr plant expression vector aiia constructed name pcam ppp aiia expression aiia controlled pathogen inducible plant promoter ppp recombinant plasmid transferred eucalyptus urophylla grandis agrobacterium mediated transformation pcr southern blotting showed aiia successfully integrated urophylla grandis genome expression induced ralstonia solanacearum inoculation shown reverse transcription pcr transcription efficacy aiia increased fold inoculation solanacearum erwinia carotovora ssp zeae sabet cylindrocladium quinqueseptatum respectively shown real time pcr transgenic urophylla grandis expressing aiia protein exhibited significantly enhanced disease resistance compared non transgenic plants delaying onset wilting reducing disease index
known high risk human papillomavirus infection main etiological factor cervical carcinogenesis however human papillomavirus screening sufficient early diagnosis study aimed identify potential biomarkers common cervical carcinoma human papillomavirus infection proteomics human papillomavirus based early diagnosis prognosis end collected cases fresh cervical tissues cases paraffin embedded tissue slices diagnosed cervical squamous cell carcinoma cervical intraepithelial neoplasia iii normal cervix ethnic uighur han women human papillomavirus infection eight oncogenic human papillomavirus types detected tissue dna samples using quantitative polymerase chain reaction protein profile cervical specimens human papillomavirus positive squamous cell carcinoma human papillomavirus negative normal controls analyzed proteomics bioinformatics expression candidate proteins determined quantitative reverse transcriptase polymerase chain reaction immunohistochemistry identified proteins differentially expressed human papillomavirus positive squamous cell carcinoma compared normal cervix quantitative reverse transcriptase polymerase chain reaction analysis verified upregulation asah pcbp ddx mcm tagln hnrnpa eno typh cyc mcm squamous cell carcinoma compared normal cervix addition transcription pcbp mcm hnrnpa typh cyc also significantly increased cervical intraepithelial neoplasia iii compared normal cervix immunohistochemistry staining confirmed overexpression pcbp hnrnpa asah ddx squamous cell carcinoma cervical intraepithelial neoplasia iii compared normal controls data suggest expression asah pcbp ddx hnrnpa possibly mcm mcm cyc eno typh upregulated cervical carcinogenesis potentially associated human papillomavirus infection validation studies profile contribute establishing auxiliary diagnostic markers human papillomavirus based cancer prognosis
lateral segregation plasma membrane lipids generally accepted phenomenon lateral lipid microdomains specific composition structure biological functions established result simultaneous action several competing mechanisms contribute membrane organization various lines evidence support conclusion among mechanisms membrane potential plays significant extent unique role clear differences microdomain structure revealed fluorescence microscopy could recognized polarized depolarized membranes addition recent fluorescence spectroscopy experiments reported depolarization induced changes membrane lipid order context earlier findings showing plasma membranes depolarized cells less susceptible detergents cells less sensitive antibiotics antimycotics treatment discuss model membrane potential driven organization microdomain structure contributes maintaining membrane integrity response stress pathogen attack challenges involving partial depolarization plasma membrane article part special issue entitled cellular lipid landscape edited tim levine anant menon elsevier rights reserved
nadph oxidases noxs involved inflammation angiogenesis tumor growth osteoclast differentiation however role nox nox macrophage differentiation tumor progression still elusive report nox nox critical differentiation monocytes macrophages polarization type type macrophages occurrence tumor associated macrophages tams found deletion nox nox led dramatic decrease ros production macrophages resulted impaired efficiency monocyte macrophage differentiation type macrophage polarization showed nox nox critical activation mapks jnk erk macrophage differentiation deficiency jnk erk activation responsible failure monocyte macrophage differentiation turn affecting macrophage polarization furthermore demonstrated decrease macrophages tams concomitant reduction cytokine chemokine secretion contributed delay wound healing inhibition tumor growth metastasis nox double knockout mice compared mice collectively data provide direct evidence nox nox deficiency impairs macrophage differentiation occurrence type tams tumor development
molecular mechanisms governing maintenance commitment differentiation stem cells largely unexploited molecules involved regulation multiple cellular processes particular importance stem cell physiology integrate different signals coordinate cellular decisions related self renewal fate determination geminin emerged critical factor dna replication stem cell differentiation different stem cell populations inhibitory interaction cdt member prereplicative complex ensures controlled timing dna replication consequently genomic stability actively proliferating cells embryonic well somatic stem cells geminin shown interact transcription factors epigenetic regulators drive gene expression programs ultimately guide cell fate decisions ever growing number studies suggests interactions geminin proteins regulating transcription conserved among metazoans interactions geminin proteins modifying epigenome members repressive polycomb group swi snf proteins permissive trithorax long established complexity interactions however beginning unravel revealing key roles maintaining stem cell self renewal fate specification review summarize current knowledge give new perspectives role geminin transcriptional epigenetic regulation alongside regulatory activity dna replication implication regulation stem progenitor cell biology
effects liver fatal intoxication binary toxin ricin unclear report robust neutrophil influx liver cbl mice lethal parenteral ricin challenge occurring peri portal centro lobular hepatic areas within followed abrupt disappearance hepatic macrophages kupffer cells chemokine profiles determined microarray ribonuclease protection assays northern blotting enzyme linked immunosorbent assays showed rapid upregulation persistence neutrophils cxcl cxcl mip monocytes ccl mcp red blood cell pooling loss hepatocyte glycogen associated progressive hypoglycemia fibrin deposition death followed monoclonal antibody ricin chain administered intravenously blunted hypoglycemia abrogated death outcome observed anti ricin antibody given toxin exposure well administered approximately toxin exposure targeting antibody specific amino acid sequences ricin chain hael qxxwxxa critical therapeutic effect emergence liver macrophages kupffer cells replenishment glycogen previously depleted hepatocytes preceded full recovery host data identify critical events liver injury healing ricin intoxication well new means specific targets post exposure therapeutic intervention
hypothesized epithelial cells remnant small intestine display colonic phenotype total proctocolectomy aims present study identify preferentially expressed molecules colon small intestine evaluate mrna levels ileal pouch differential gene expression investigated small intestine colon using cdna microarray confirmed northern blotting expression three colonic mrnas hydroxy methylglutaryl coenzyme synthase deleted malignant brain tumors carcinoembryonic antigen related cell adhesion molecule one small intestinal microsomal triglyceride transfer protein mrna compared control ileal pouch mucosae quantitative reverse transcriptase polymerase chain reaction seventy four clones differentially expressed threefold difference differential expression confirmed mrnas examined including hydroxy methylglutaryl coenzyme synthase microsomal triglyceride transfer protein mucosal expression carcinoembryonic antigen related cell adhesion molecule mrna ileal pouch enhanced humans remnant ileum develops colonic phenotype total proctocolectomy comparative study epithelial gene expression small intestine colon enables analyze mechanisms intestinal adaptation total proctocolectomy
reaction mechanism arylmalonate decarboxylase investigated using density functional theory calculations enzyme catalyzes asymmetric decarboxylation prochiral disubstituted malonic acids yield corresponding enantiopure carboxylic acids quantum chemical cluster approach employed two different models active site designed small one study mechanism characterize stationary points large one study enantioselectivity reactions methyl phenylmalonate methyl vinylmalonate considered different substrate binding modes assessed calculations overall give strong support suggested mechanism decarboxylation substrate first takes place followed stereoselective protonation cysteine residue enediolate intermediate transition states stabilized number hydrogen bonds make dioxyanion hole resulting feasible energy barriers demonstrated enantioselectivity case methyl phenylmalonate substrate dictated already substrate binding one binding mode energetically accessible whereas case smaller methyl vinylmalonate substrate binding following transition states contribute enantioselectivity
background bone morphogenetic protein bmp signalling emerged fundamental pathway endothelial cell biology deregulation pathway implicated several vascular disorders bmp signalling output endothelial cells highly context dose dependent phosphorylation bmp intracellular effectors smad routinely used monitor bmp signalling activity better understand vivo context dependency bmp smad signalling investigated differences bmp smad transcriptional activity different vascular beds mouse embryonic postnatal stages used bre gfp bmp signalling reporter mouse bmp response element bre promotor smad target gene drives expression gfp results mosaic pattern gfp present various angiogenic sprouting plexuses endocardium cardiac cushions trabeculae heart high calibre veins seemed bre gfp transcriptionally active arteries ubiquitous activity present embryonic lymphatic vasculature postnatal lymphatic vessels showed however discrete micro domains transcriptional activity dynamic shifts transcriptional activity also observed endocardium developing heart general decrease activity time surprisingly proliferative endothelial cells almost never gfp positive patches transcriptional activity seemed correlate vasculature undergoing hemodynamic alterations conclusion bre gfp mouse allows investigate selective context dependent aspects bmp smad signalling data reveals highly dynamic nature bmp smad mediated transcriptional regulation time space throughout vascular tree supporting bmp smad signalling source phenotypic diversity healthy endothelium knowledge provide insight vascular bed organ specific diseases phenotypic heterogeneity within endothelial cell population
immune response determined speed cell reaction antigens assured state readiness proliferation cytokine secretion proliferation apoptosis motion many cell types controlled cytoplasmic proteases calpain inhibitor calpastatin together forming calpain calpastatin system ccs assumed modify targets upon activation dependent cytoplasmic increase contrastingly notion using quantitative real time pcr semiquantitative flow cytometry respectively show ccs genes constitutively expressed calpains constitutively active resting circulating human lymphocytes furthermore demonstrate calpain inhibition resting cells prevents proliferation vitro greatly reduces secretion multiple cytokines mechanistic reason effects calpain inhibition cell functions might demonstrated significant reduction expression active phosphorylated upstream signalling molecules including phospholipase gamma plck kappa inhibitor treated cells thus propose constitutive self regulatory calpain calpastatin system activity resting human cells necessary controlling element readiness complex effective response antigenic challenge
established integrated graduate program physical engineering biology igppeb yale university goal create comprehensive graduate program train new generation scientists possess sophisticated understanding biology capable applying physical quantitative methodologies solve biological problems describe framework training program report effectiveness also share insights gained development implementation program features teaching faculty complementary specializations student peer learning novel hands courses facilitate seamless blending interdisciplinary research teaching also incorporates enrichment activities improve communication skills engage students science outreach foster cohesive program cohort promote development transferable skills applicable variety careers curriculum graduate program integrated curricular requirements several granting home programs physical engineering biological sciences moreover wide ranging recruiting activities igppeb serve enhance quality diversity students entering graduate school yale also discuss challenges encountered establishing optimizing program describe institution level changes catalyzed introduction new graduate program goal article serve inspiration practical manual seek establish similar programs institutions authors biochemistry molecular biology education published wiley periodicals inc behalf international union biochemistry molecular biology
background objective phytoestrogens weak estrogens found plants derived plant precursors human metabolism hypothesized reduce risk number cancers however epidemiologic studies addressing issue hampered lack comprehensive phytoestrogen database quantifying exposure purpose research develop database use food frequency questionnaires large epidemiologic studies methods database based consumption patterns derived semistructured interviews african american latina white women residing california san francisco bay area hplc mass spectrometry used determine content seven specific phytoestrogenic compounds isoflavones genistein daidzein biochanin formononetin coumestan coumestrol plant lignans matairesinol secoisolariciresinol food items groups results traditional soy based foods found contain high levels genistein daidzein expected well substantial amounts coumestrol wide variety hidden sources soy soy protein isolate soy concentrate soy flour added foods observed several foods various types sprouts dried fruits garbanzo beans asparagus garlic licorice also found substantial contributors one phytoestrogens analyzed conclusions databases one described important assessing relationship phytoestrogen exposure cancer risk epidemiologic studies agencies united states department agriculture usda routinely provide data food composition epidemiologic investigations dietary health effects based consider instituting programs analysis phytochemicals including phytoestrogens
spermatogenic cell specific variant glyceraldehyde phosphate dehydrogenase gapds cloned rat testis cdna library pattern expression determined nucleotide cdna found encode enzyme substantial homology mouse gapds identity human gapd identity isozymes northern blotting rat tissue rnas detected gapds transcript testis rna liver spleen epididymis heart skeletal muscle brain seminal vesicle kidney rat gapds mrna first detected day postnatal testis development age coincides initial post meiotic differentiation round spermatids isolated rat spermatogenic cell rna probed gapds expression transcripts detected round spermatids condensing spermatids pachytene spermatocytes demonstrating haploid expression gapds gene however immunohistochemical staining rat testis sections anti gapds antisera detect gapds round spermatids localized protein stage xiii later condensing spermatids well testicular spermatozoa indicating gapds expression translationally regulated current results similar previously obtained mouse gapds human gapd suggesting reliable comparisons made species toxicant screening contraceptive development
explored expression function mir microrna human pancreatic cancer quantitative real time polymerase chain reaction used probe mir expression pancreatic cancer cell lines human pancreatic carcinoma pancreatic cancer cell lines panc aspc cells engineered stably downregulate endogenous mir lentiviral transduction mechanistic effects mir downregulation pancreatic cancer development tested proliferation migration fluorouracil chemosensitivity assays vitro explant assay vivo possible mir downstream gene nkain transporting atpase interacting tested dual luciferase activity assay quantitative real time polymerase chain reaction functional involvement nkain mir regulated pancreatic cancer development tested small interfering rna mediated nkain knockdown mir downregulated panc aspc cells mir upregulated pancreatic cancer cell lines human pancreatic carcinoma lentivirus induced mir downregulation decreased pancreatic cancer proliferation migration fluorouracil resistance vitro inhibited growth cancer explant vivo nkain directly targeted mir pancreatic cancer small interfering rna mediated nkain knockdown reversed inhibition mir downregulation pancreatic cancer development mir aberrantly overexpressed pancreatic cancer inhibiting mir may suppress pancreatic cancer development possibly inverse regulation nkain
end june microbiologists countries gathered dundee scotland fourth edition young microbiologists symposium microbe signalling organisation pathogenesis aim symposium give early career microbiologists opportunity present work convivial environment interact senior world renowned scientists exciting fields microbiology research meeting supported microbiology society society applied microbiology american society microbiology sponsorship european molecular biology organisation royal society edinburgh report highlight themes emerged many interesting talks poster presentations well activities offer energetic meeting
purpose reviewthe review examines utility stem cell biology ophthalmology oculoplastic surgery recent findingsthe applicability stem cell biology varies across range different subfields within ophthalmology oculoplastic surgery resident stem cells identified lacrimal gland corneal limbus orbital fat muscles eye potentially applied vitro cell organ cultures intent disease modeling transplants discovery adipocyte derived stem cells offered potentially powerful tool variety oculoplastic applications wound healing skin rejuvenation burn therapeutics several groups currently identifying new uses stem cells oculoplastic surgery summarythe need stem cell treatment spans wide array subfields within ophthalmology ranging reconstruction eyelid generation artificial lacrimal glands oncological therapeutics advent induced pluripotent stem cells opened realm regenerative medicine making modeling patient specific diseases possibility identification characterization endogenous stem cell populations eye makes possible obtain specific tissues induced pluripotent stem cells differentiation permitting use transplants oculoplastic surgery
cortisol one important glucocorticoids plays important roles regulating human metabolism midnight salivary cortisol shown correlate well free cortisol concentration serum one first tests recommended diagnosis cushing syndrome procedure described involves centrifugation saliva samples remove solids mucus strands diluted buffer mixed deuterated internal standard cortisol samples subjected reverse phase separation column analyzed tandem mass spectrometry method quantification achieved comparing responses given sample responses calibrators known concentrations calibrators prepared analyzed along patient samples analytical specificity ensured using multiple reaction monitoring fragment ions unique cortisol deuterated internal standard
following locus specific genome editing mouse embryonic stem cells escs identification correctly targeted clones remains challenge applied multiplex ligation dependent probe amplification mlpa screen homologous recombination based genomic integration knockout construct part gene deleted candidate escs thereby identified subsequently validated conventional methods thus mlpa represents highly reliable well cost time efficient alternative currently applied methods southern blotting polymerase chain reaction pcr based approaches also applicable knockin recombination strategies compatible crispr cas system genome editing strategies elsevier inc rights reserved
rarely reported red pigmented dinoflagellate woloszynskia pascheri described frozen surface waters ontario canada new information based light microscopy provided cell organelles dinokaryon chromosomes pigment droplets ectoplasmic vesicular layer thin walled ice bound pellicle cysts thick walled summer resting cysts earlier published suggestion pascheri morphology similar gymnodinium cryophilum wedemayer wilcox graham hansen moestrup refuted process red ice formation depends number weather related environmental factors important mid winter thaw creates pathways cracks melted areas ice passage swimming cells water underlying ice water surface ice thin walled ice bound pellicle cysts pascheri remained viable ambient air temperatures lower degrees several days suggests unique biochemical physiology needs research summary historical classification species reveals tumultuous past continuing assignment species within genus woloszynskia appears doubtful given rapidly improving state knowledge fine structure molecular biology many similar species
burying beetles genus nicrophorus relatively rare among insects providing sophisticated parental care consequently become model species research analysing social evolution evolution parental care mating systems used recently published vespilloides genome transcriptome develop microsatellite markers specifically developed polymorphic markers five alleles per locus used investigate levels genetic differentiation four south cambridgeshire populations vespilloides separated markers revealed significant genetic structuring among populations global one pairwise comparisons among populations significant single exception comparison two closest populations approximately apart general microsatellite markers showed lower observed heterozygosity expected infer limited dispersal populations potentially also inbreeding within suggest may due habitat fragmentation discuss results context recent laboratory experiments inbreeding beetle flight
hypothalamus responsible control many physiological responses including energy homeostasis interest number instances sexual dimorphism documented regard metabolic processes review discuss necessity utilizing male female models studying mechanisms underlying energy homeostasis particularly originating level hypothalamus obesity often results central neuroinflammation describe markers could used study differences male female models whole organism also cellular level laboratory generated wide array immortalized hypothalamic cell models originating male female rodents suggest could beneficial types studies imperative sexes considered recommendations therapeutic interventions considered
main problem helicobacter pylori pylori infection management linked antibiotic resistances phenomenon grown last decade inducing dramatic decline conventional regimen effectiveness causes resistance point mutations bacterial dna interfere antibiotic mechanism action especially clarithromycin levofloxacin therefore international guidelines recently discouraged use areas relevant resistance percentage suggesting first line schedules expected high eradication rates bismuth containing non bismuth quadruple therapies regimens require daily assumption large number tablets consequently complete adherence expected subjects may motivated presence major disorders however incomplete adherence antibiotic therapies may lead resistance onset since sub inhibitory concentrations could stimulate selection resistant mutants note recent meta analysis suggests susceptibility tests may useful choice first second line rescue treatment additionally susceptibility guided therapy demonstrated highly effective superior empiric treatments meta analyses recent clinical studies conventional susceptibility test represented culture antibiogram however method available everywhere mainly methodology related factors fails detect hetero resistances polymerase chain reaction pcr based culture free techniques gastric biopsy samples accurate finding even minimal traces genotypic resistant strains hetero resistant status identification specific point mutations need invasive endoscopic procedure important limit spread step moreover detection point mutations bacterial dna fecal samples studies clarithromycin susceptibility shown overall high sensitivity specificity compared culture pcr gastric biopsies bases two commercial tests available although shown controversial findings novel pcr method showed full concordance tissue stool results preliminary experience conclusion despite poor validation increasing evidence potential availability noninvasive investigations able detect pylori resistances antibiotics kinds analysis currently early phase development caution paid clinical application studies aimed evaluate sensitivity specificity afford novel data solid considerations nevertheless noninvasive molecular tests may improve patient compliance time cost infection management therapeutic outcome moreover potential risk future increase resistance quadruple regimens consequence use large scale incomplete patient adherence could avoided
purpose overexpression cyclooxygenase cox thought promote survival transformed cells transforming growth factor beta tgf beta exerts anti proliferative effects broad range epithelial cells current study investigated whether tgf beta regulate cox expression human lung adenocarcinoma cells tgf beta responsive overexpress cox materials methods western blotting northern blotting mrna stability assays performed demonstrate cox protein mrna expression suppressed tgf beta also evaluated effects tristetraprolin cox mrna using rna interference results demonstrated cox mrna protein expression significantly suppressed tgf beta actinomycin chase experiment demonstrated cox mrna rapidly degraded presence tgf beta suggesting tgf beta induced inhibition cox expression achieved via decreased mrna stability also found tgf beta rapidly transiently induced expression well known mrna destabilizing factor suppression cox mrna expression observed using rna interference confirmed increased levels play pivotal role destabilization cox mrna tgf beta furthermore showed smad essential dependent regulation cox expression response tgf beta conclusion results study show tgf beta regulated cox expression via mrna destabilization mediated smad ttp cells
arctic charr salvelinus alpinus important species icelandic aquaculture common wild salmonid iceland study course infection bacterium renibacterium salmoninarum conducted using different challenge methods brackish fresh water bacterial isolation elisa pcr tests used detection bacterium multiple organ samples experiment run brackish water infection established intraperitoneal injection colony forming units cfu fish external internal symptoms bacterial kidney disease bkd mortalities injection cohabitation trial run simultaneously infection well established demonstrated detection methods applied symptoms bkd seen cohabitant survived separate experiment infection established pumping fixed amount water tank fingerlings infected intraperitoneal injection tanks naive fish fresh brackish water fish inflow tanks reared additional neither macroscopic symptoms mortalities elisa pcr tests showed infection started take hold challenge trials demonstrated arctic charr susceptible salmoninarum cohabitation inflow water tanks infected fish provide useful models studies salmoninarum infection acquired natural way arctic charr
field survey indicated elbe saale rivers contaminated clofibric acid ibuprofen elbe river water could detect metabolite hydroxy ibuprofen analyses city saskatoon sewage effluent discharged south saskatchewan river detected clofibric acid neither ibuprofen metabolite laboratory studies indicated pharmaceutical ibuprofen readily degraded river biofilm reactor two metabolites detected identified hydroxy carboxy ibuprofen metabolites observed degrade biofilm reactors however human metabolism metabolite carboxy ibuprofen appears degrades second whereas opposite occurs biofilm systems biofilms pharmacologically inactive stereoisomere ibuprofen degraded predominantly contrast clofibric acid biologically degraded experimental period days similar results obtained using biofilms developed using waters either south saskatchewan elbe river sterile reactor losses ibuprofen observed results suggested abiotic losses adsorption played minimal role fate pharmaceuticals river biofilm reactors elsevier science ltd rights reserved
hematopoietic cells continuously generated throughout life hematopoietic stem cells thus making hematopoiesis favorable system study developmental cell lineage commitment main factors incorporating environmental signals developing hematopoietic cells cytokines regulate commitment hematopoietic progenitors different blood lineages acting either instructive permissive manner fms like tyrosine kinase flt ligand interleukin cytokines pivotal cell development manifested severely compromised cell development absence however precise role regulating cell commitment subject debate present study assessed rescue cell commitment mice lacking simultaneously overexpressing results obtained demonstrate overexpression deficient mice rescues cell commitment resulting significant ebf pax expression lyd precursors subsequent generation normal numbers cell progenitors therefore indicating dispensable commitment cell lineage analysis lyd progenitors deficient mice overexpressing bcl well transgenic mice suggests regulate cell commitment permissive manner inducing proliferation lyd progenitors providing survival signals progenitors
despite tremendous progress finding genes manipulated affects lifespan little known genetics underlying natural variation lifespan segregating genetic variants lifespan notoriously difficult find genome wide association studies gwas complementary approach manipulate key genetic pathways lines differ lifespan candidate pathways regulated long lived lines lines predicted respond less pharmaceutical regulation pathways short lived lines experimental studies identified nutrient sensing pathway tor key regulator lifespan model organisms pathway effectively regulated using drug rapamycin extends lifespan tested species expose short long lived lines nematode caenorhabditis remanei rapamycin investigate long lived lines hypothesized already regulated tor signaling respond less rapamycin found interaction line rapamycin treatment since rapamycin extended lifespan independent intrinsic lifespan lines shows rapamycin equally effective long short lived lines suggests evolution long life may involve factors regulation tor elsevier inc rights reserved
pressure overload shown induce mitogen activated protein kinases mapks reactivate atrial natriuretic factor heart test sensitivity signals pressure overload assayed activity mapks extracellular signal regulated kinase jun terminal kinase protein lysates left ventricle white blood cells wbc isolated aortic banded mice varying levels pressure overload separated mice measured atrial natriuretic factor mrna levels northern blotting expected significant induction atrial natriuretic factor mrna levels observed aortic banding significantly correlated trans stenotic systolic pressure gradient weight body weight ratio contrast significant correlation systolic pressure gradient weight body weight ratio observed mapk activity detected samples wbcs importantly activation mapks significantly correlated activation wbcs animal test whether mapk activation wbcs might reflect uncontrolled blood pressure levels humans assayed extracellular signal regulated kinase jun terminal kinase activation wbcs isolated normotensive volunteers hypertensive patients controlled blood pressure values hypertensive patients uncontrolled blood pressure values interestingly hypertensive patients controlled blood pressure values mass extracellular signal regulated kinase phosphorylation significantly reduced compared hypertensive patients uncontrolled blood pressure values results suggest mapks sensors pressure overload extracellular signal regulated kinase activation wbcs might used novel surrogate biomarker uncontrolled human hypertension hypertension
details major pathways metabolism elucidated large measure work experimental animals unlikely differ qualitatively mammalian species important challenge facing researchers today metabolic regulation integrated control metabolic pathways whole organism aspects may well differ quantitatively even qualitatively species review methods studying metabolism metabolic regulation humans described scientific practical advantages performing studies metabolic regulation humans scientific advantages clear fundamental differences metabolic regulation rats humans importance novo lipogenesis deposition body fat metabolism atherogenic triacylglycerol rich lipoproteins practical advantages result mainly size human compared laboratory animals enabling large blood samples obtained several measurement techniques applied one time reasons persistence animal experimentation norm rather exception among life science researchers discussed
preg gene encodes cyclin like protein implicated derepression nucleases phosphatases scavenge phosphate environment better understand regulatory role preg gene product differential display reverse transcriptase polymerase chain reaction used isolate transcripts differentially expressed preg mutant strain mold neurospora crassa grown phosphate starvation two transcripts whose differential expressions confirmed northern blotting downregulated strain crassa carrying loss function mutation preg gene preg allele transcripts revealed genes coding enzymes involved thymidine salvage pathway iso orotate decarboxylase biosynthesis coenzyme ubiquinone methyltransferase may relevant understanding molecular events involved phosphorus sensing crassa
cutaneous inflammation alters function primary afferents gene expression affected dorsal root ganglia drg however specific mechanisms injury induced peripheral afferent sensitization behavioral hypersensitivity development fully understood recent studies children suggest potential role growth hormone pain modulation growth hormone modulates homeostasis tissue repair injury affects nociception neonates known determine whether played role modulating sensory neuron function hyperresponsiveness skin inflammation young mice examined behavioral hypersensitivity response properties cutaneous afferents using vivo hairy skin saphenous nerve drg spinal cord preparation results show inflammation hairy hind paw skin initiated either postnatal day reduced levels specifically affected skin furthermore pretreatment inflamed mice exogenous reversed mechanical thermal hypersensitivity addition altering nociceptor function effects may mediated upregulation insulin like growth factor receptor igfr modulated transcriptional output igfr drg neurons vitro vivo afferent selective knockdown igfr inflammation also prevented observed injury induced alterations cutaneous afferents behavioral hypersensitivity similar pretreatment results suggest block inflammation induced nociceptor sensitization postnatal development leading reduced painlike behaviors possibly suppressing upregulation igfr within drg
labelled pistachio food products mandatory consequence development suitable analytical methodologies detect nut processed foods advisable work two different qpcr assays detect pistachio sybr green locked nucleic acid lna probes tested compared pis allergen coding sequences amplified cloned different pistachio varieties specific primers probes allergen designed according results lna probe real time pcr appears sensitive specific method reaching pistachio effect temperature pressure pistachio dna detection also analysed lna probe based qpcr data showed reduced amplificability pistachio thermal treatment pressure nevertheless effect observed boiling applicability method studied analysing food products comparison commercial elisa kit elsevier ltd rights reserved
background transposable element dna fragment change position within genome transposable elements play important roles maintaining stability diversity organisms transposition recent studies shown approximately half genes bombyx mori tes results systematically identified analyzed bmago associated tes exceed mori genome additionally also mapped small rnas associated bmago mori transposon abundant associated bmago derived small rnas represent small rna pool determined expression patterns several derived small rnas northern blotting results showed differential expression multiple small rnas normal bmnpv infected bmn cells silkworms various developmental stages confirmed four sirnas could bind bmago using emsa also validated recognition sites four sirnas dual luciferase reporter assays furthermore qrt pcr analysis revealed overexpression four sirnas could downregulate expression bmn cells transcription upregulated downregulation bmago conclusions results suggest functions source small rnas pool pool produce many bmago associated small rnas regulate expression
study report isolation phosphatase gene designated ghhl cotton functional characterization ghhl transcripts detected cotton tissues examined southern blotting analysis indicated exists multiple copies biochemical analysis showed ghhl dependent cation sensitive purified recombinant ghhl protein dephosphorylated bisphosphate nucleotide inositol bisphosphate demonstrating dual bisphosphate nucleotidase inositol polyphosphate phosphatase activities overexpression ghhl complemented yeast hal mutant enhanced yeast growth elevated nacl licl showing role salt tolerance associated ionic stress response taken together results show ghhl functional good candidate gene might used improve salt tolerance plants
regulatory cell treg therapy using recipient derived tregs expanded exvivo currently investigated clinically others means reducing allograft rejection following organ transplantation data animal models demonstrated adoptive transfer allospecific tregs offers greater protection graft rejection compared polyclonal tregs chimeric antigen receptors car clinically translatable synthetic fusion proteins redirect specificity cells toward designated antigens used car technology redirect human polyclonal tregs toward donor mhc class molecules ubiquitously expressed allografts two novel hla specific cars engineered one comprising signaling domain car one lacking intracellular signaling domain car car tregs specifically activated significantly suppressive polyclonal car tregs presence hla without eliciting cytotoxic activity furthermore car car tregs preferentially transmigrated across hla expressing endothelial cell monolayers human skin xenograft transplant model adoptive transfer car tregs alleviated alloimmune mediated skin injury caused transferring allogeneic peripheral blood mononuclear cells effectively polyclonal tregs results demonstrated use car technology clinically applicable refinement treg therapy organ transplantation
virion host shutoff protein vhs encoded gene rnase activity key regulator early host shutoff response induced type herpes simplex virus despite low amino acid similarity vhs protein swine herpesvirus pseudorabies virus prv also exhibits rnase activity however mechanism underlying action vhs remains undefined report rna degradation profile prv vhs similar identical type herpes simplex virus vhs notably presence cap structure enhances degradation rate preferential targeting vhs protein towards end encephalomyocarditis virus internal ribosome entry site ires furthermore type herpes simplex virus vhs produces simple degradation pattern prv vhs gives rise multiple intermediates results northern blotting using probes recognizing various regions rna substrate found prv vhs also cleaves downstream ires region vhs protein overall shows rnase activity moreover addition translation initiation factors eifh eifb significantly increased rnase activity recombinant prv vhs capped rna nonetheless proteins fully reconstitute ires directed targeting pattern observed vhs translated rabbit reticular lysate system interaction prv vhs eifh eifb implies translation initiation machinery within cell able stimulate nuclease activity prv vhs however process remains inefficient terms ires targeting pattern
considered exclusively cell powerhouse mitochondria recognized perform multiple essential functions beyond energy production impacting areas cell biology medicine since emergence molecular biology discovery pathogenic mitochondrial dna defects research advances revealed number common human diseases share underlying pathogenesis involving mitochondrial dysfunction mitochondria undergo function defining dynamic shape changes communicate regulate gene expression within nucleus modulate synaptic transmission within brain release molecules contribute oncogenic transformation trigger inflammatory responses systemically influence regulation complex physiological systems novel mitopathogenic mechanisms thus uncovered across number medical disciplines including genetics oncology neurology immunology critical care medicine increasing knowledge bioenergetic aspects human disease provided new opportunities diagnosis therapy prevention connecting various domains medicine article overview specific aspects mitochondrial biology contributed likely continue enhance progress modem medicine authors published elsevier
vitamin generic term corrinoid compounds exhibit biological activity cyanocobalamin collectively referred cobalamins methylcobalamin deoxyadenosylcobalamin active cobalamins human metabolism cobalamin plays crucial role maintenance homocysteine methylmalonyl coa homeostasis required erythrocyte formation dna synthesis data human animal studies indicate cobalamin deficiency impairs neuronal function process thought contribute age related cognitive decline dementia cobalamin deficiency also results dysfunction peripheral nervous system among disorders although detailed understanding biochemical pathways perturbed cobalamin deficiency mechanisms underlying age related dyshomeostasis pathways remain addressed cobalamin utilization dependent efficient transit lysosomes mounting evidence indicates lysosomal function deteriorates aging long lived post mitotic cells neurons present article review published data supports proposition impaired lysosomal processing cobalamin may play significant role age related neuro degenerative diseases
tractability budding yeast genome provided many insights fundamental mechanisms regulating cellular life advent synthetic biology single cell measurements novel tools required manipulate yeast genome controlled manner present new family yeast shuttle vectors called single integration vectors psiv upon transformation yeast plasmids replace entire deficient auxotrophy marker locus cassette containing exogenous marker shown using flow cytometry complete replacement results unique integration desired dna fragment marker locus addition second transcriptional unit inserted achieve simultaneous integration two constructs selection marker cassettes present psiv also used generate complete set gene tagging plasmids pgt encompassing large palette fluorescent proteins cyan fluorescent protein near infrared tandem dimer red fluorescent protein tagging cassettes orthogonal thanks use different tef promoter terminator couples thereby avoiding marker cassette switching favoring integration desired locus summary created two sets robust molecular tools precise genetic manipulation budding yeast
pratylenchus zeae parasitizes various crops damages host roots resulting decreased yield quality host plants alignments mitochondrial dna mtdna cytochrome oxidase coi sequences revealed genetic variation among pratylenchus species results indicated intraspecific variations mtdna coi sequences among eight zeae populations interspecific variations zeae pratylenchus species based mtdna coi region loop mediated isothermal amplification lamp assay developed rapid specific detection zeae optimal conditions lamp assay degrees min lamp products confirmed using conventional polymerase chain reaction pcr analysis restriction enzyme bam visual inspection adding sybr green products lamp assay could detect zeae populations different hosts different geographical origins specifically lamp assay also sensitive detecting individual zeae times sensitive conventional pcr first report detection pratylenchus spp using lamp addition results also suggested use coi gene might allow good resolution pratylenchus species level
selenium essential micronutrient human metabolism demonstrated marked antioxidant effect inorganic form selenium potentially toxic human health availability increases organic form toxicity declines inorganic selenium incorporated lactic acid bacteria commonly used starter fermented dairy products aim research determine quantify capacity selenium incorporation lactobacillus ssp metabolism ice culture media enriched naseo order determine capacity four lactic acid bacteria used tolerance selenium determined adding naseo growth medium lactobacillus rhamnosus presented highest tolerance lactobacillus delbrueckii subsp bulgaricus ncfb showed lowest assimilation inorganic selenium helveticus iuami highest despite microorganism displayed least tolerance hand lactobacillus jhonsonii showed highest concentration selenium terms generated biomass weight finally bacteria study assimilated inorganic selenium therefore could used starter cultures functional ingredients elaboration foods enriched selenium
objective molecular mechanisms underlying fibrillation potentials still unclear hypothesised expression cardiac type voltage gated sodium channel isoform nav denervated rat skeletal muscle associated generation potentials methods muscle samples extracted analysed biologically surgically denervated rat extensor digitorum longus muscle concentric needle electromyographic recording various time points denervation days results nav messenger rna mrna signal northern blotting nav protein expression immunohistochemistry appeared second day denervation exactly fibrillation potentials appeared administration lidocaine much stronger affinity sodium channels cardiac muscle skeletal muscle dramatically decreased fibrillation potentials effect contralateral compound muscle action potentials conclusions expression nav participates generation fibrillation potentials denervated rat skeletal muscle significance proposed altered expression voltage gated sodium channel isoforms novel mechanism explain occurrence fibrillation potentials following skeletal muscle denervation international federation clinical neurophysiology published elsevier ireland ltd rights reserved
acquired aplastic anemia hematological disease characterized failure bone marrow hematopoiesis resulting pancytopenia immune mediated destruction hematopoietic stem progenitor cells hspcs plays central role pathophysiology acquired transforming growth factor beta tgf beta crucial adjusting immune system aim study investigate role tgf beta gene polymorphisms susceptibility acquired via approach snapshot genotyped patients acquired controls derived conclusion genotype significantly associated decreased risk acquired adjusted furthermore decreased risk pronounced among male patients adjusted saa vsaa severe severe patients adjusted compared controls subgroup analysis however significant increased risk observed genotype distributions genotype adjusted compared genotype among saa vsaa patients controls severity stratification analysis results indicated tgf beta gene polymorphisms might involved munity acquired chinese population initial analysis provides valuable clues study tgf beta pathway genes acquired
porcine rotavirus porva one common causes mild severe dehydrating diarrhea leading losses weaning postweaning piglets rapid highly specific sensitive antigen capture enzyme linked immunosorbent assay elisa developed detection porva using highly conserved antigenic protein group rotavirus directed rabbit polyclonal antibodies capture antibody murine monoclonal antibodies detector antibody detection limit elisa found equal conventional reverse transcription polymerase chain reaction pcr tcid validation house elisa porcine fecal diarrhea samples collected different provinces china evaluated compared conventional pcr taqman quantitative pcr qpcr sensitivity specificity house elisa relative qpcr found respectively strong agreement kappa two techniques total detection rate elisa conventional pcr qpcr found respectively without statistical significant difference moreover elisa failed detect cross reactivity porcine epidemic diarrhea virus transmissible gastroenteritis virus pseudorabies virus porcine circovirus results suggested developed method rapid highly specific sensitive may help large scale surveillance timely detection preventive control rotavirus infection porcine farms
aim underfeeding known reduce resting energy expenditure ree energy conserving mechanism may also reduce insulin sensitivity uncoupling protein known significant role energy expenditure small mammals role ucps humans unclear ucp primarily expressed human skeletal muscle significant site whole body lean individuals therefore potential role human metabolism examine effects short term underfeeding ucp skeletal muscle expression whole body insulin sensitivity substrate utilization thermogenesis methods eleven non obese men age years body mass index mean fed two periods days underfeeding diet predicted requirements weight maintenance eucaloric diet macronutrient composition random order subjects visited laboratory four separate occasions dietary period ree metabolites muscle biopsies vastus lateralis taken thermogenic response hyperinsulinaemic euglycaemic clamp measured period ucp mrna levels measured using taqman results underfeeding days ree fell min weight loss baseline fasting glucose significantly lower mmol corresponding fall carbohydrate oxidation min fasting free fatty acids ffa increased mmol increase beta hydroxybutyrate concentrations compared post significant change ucp mrna levels pre post arbitrary units compared pre post thermogenic response clamp days underfeeding significant reduction glucose disposal rates mmol min carbohydrate oxidation rates lower min compared pre change glucose storage rates mmol min pre mmol min post resulted mildly underfed state marginal weight loss fasting ffa increased mmol hydroxybutyrate concentrations compared pre change glucose disposal storage rates compared pre conclusions underfeeding days significant effect ucp mrna expression skeletal muscle non obese men associated changes carbohydrate fuel partitioning ree thermogenic response glucose clamp mild underfeeding effect insulin sensitivity severe energy restriction reduced insulin stimulated glucose oxidation without affecting glucose storage
prokaryotic diacylglycerol kinase dagk undecaprenol kinase udpk lone members family multispan membrane enzymes small lack relationships family proteins including water soluble kinases exhibit unusual structure active site architecture escherichia coli dagk plays important role recycling diacylglycerol produced product biosynthesis molecules located periplasmic space udpk seems play analogous role gram positive bacteria importance evident udpk essential biofilm formation oral pathogen streptococcus mutans dagk also long served model system studies membrane protein bio catalysis folding stability structure review explores current understanding microbial physiology enzymology structural biology folding prokaryotic dagk family based years studies
recent years advances next generation sequencing ngs technology provided opportunity detect putative genetic drivers disease particularly cancers high sensitivity knowledge substantially improved understanding tumor pathogenesis hematological malignancies acute myeloid leukemia myelodysplastic syndromes pioneering work combining multi parameter flow cytometry targeted resequencing leukemia clearly shown different classes mutations appear acquired particular sequences along hematopoietic differentiation hierarchy moreover mutations found normal cells recovered remission detected relapse strong evidence existence pre leukemic stem cells pre lsc cells phenotypically normal flow cytometry morphology functional studies speculated molecularly poised transform owing limited number predisposing mutations identifying pre leukemic mutations propagate pre malignant state important implications understanding etiology disorders development novel therapeutics ngs studies found substantial enrichment mutations epigenetic chromatin remodeling regulators pre lsc elegant genetic models confirmed mutations predispose variety hematological malignancies review discuss current understanding pre leukemic biology myeloid malignancies mutations two key epigenetic regulators dnmta tet may contribute disease pathogenesis
many basic cellular processes shared across vast phylogenetic distances whereas sex determining mechanisms highly variable phyla although existence two sexes nearly universal animal kingdom however evolutionarily conserved dmrt dsx mab common zinc finger like dna binding motif domain share similar structure function phyla report six transcripts chicken dmrt generated gonads multiple alternative splicing cdna cloning genomic structure analysis found nine exons dmrt involved alternatively splicing generate dmrt transcripts northern blotting reverse transcription pcr analysis revealed expression chicken dmrt testis specific adults whole mount situ hybridizations pcr indicated dmrt specially expressed embryo gonads higher male female gonads stage female gonad stronger dmrt expression male one whereas dmrt detectable male gonad stage key time sex gonadal differentiation differential expression transcripts gonadal differentiation provides new insight roles alternative splicing dmrt governing sex differentiation chicken
landscape features affect habitat connectivity patterns gene flow hence influence genetic structure among populations studied valley oak quercus lobata threatened species california usa savannas oak woodlands distribution forming ring around central valley grasslands main goal determine role topography land cover patterns gene flow test whether elevation land cover forms stronger barriers gene flow among valley oak populations sampled valley oaks populations across range species genotyped tree eight nuclear microsatellite loci created series resistance surfaces assigning different resistance values land cover type elevation also estimated recent migration rates evaluated regard landscape features significant weak relationship euclidian distance genetic distance relationship genetic distances land cover significant relationship genetic distances elevation resistance conclude gene flow restricted high elevations northern part valley oak range high elevations central valley south migration rate analysis indicated gene flow occurring east west suggest high connectivity northern central valley facilitating formation links predict southern populations may become differentiated future genetic isolation local adaptation taking place face climate change
leukocyte populations change profoundly human endometrium menstrual cycle however predominant cell uterine natural killer unk cell contain steroid receptors gene array analysis identified transcript encoding chemokine motif ligand cxcl markedly regulated secretory phase cycle confirm data northern blotting quantitative pcr using situ hybridization localized cxcl mrna glandular epithelial cells detected secretory phase cycle candidate progesterone response elements identified positions pre pre respectively relative translation start site functionally tested using luciferase reporter deletion constructs electrophoretic mobility shift assays site directed mutagenesis deletion mutation sites reduced progesterone induction respectively finally demonstrated recombinant cxcl stimulated unk cell chemotaxis vitro therefore conclude cxcl likely regulated progesterone human endometrium may exert chemoattractive effect unk cells part responsible clustering around epithelial glands
stem cells residing epidermis skin appendages imperative skin homeostasis regeneration stem cells also participate repair epidermis injuries inducing restoration tissue integrity function damaged tissue unlike epidermis derived stem cells comprehensive knowledge skin appendage derived stem cells remains limited review summarize current knowledge skin appendage derived stem cells including fundamental characteristics preferentially expressed biomarkers potential contribution involved wound repair finally also discuss current strategies future applications limitations stem cells attempting provide perspectives optimizing available therapy cutaneous repair regeneration
low carbohydrate intake regulated controlled production ketone bodies causes harmless physiological state known dietary ketosis ketone bodies flow liver extra hepatic tissues brain use fuel spares glucose metabolism via mechanism similar sparing glucose oxidation fatty acids alternative fuel comparison glucose ketone bodies actually good respiratory fuel indeed clear requirement dietary carbohydrates human adults interestingly effects ketone body metabolism suggest mild ketosis may offer therapeutic potential variety different common rare disease states also recent landmark study showed low carbohydrate diet resulted significant reduction fat mass concomitant increase lean body mass normal weight men contrary popular belief insulin needed glucose uptake utilization man finally muscle fat carbohydrate burn amino acid flame journal international society sports nutrition
previously studied effects kgy gamma radiation generated physicochemical thermal morphological antimicrobial properties chitosan results demonstrated properties chitosan largely influenced action gamma radiation addition fat binding capacity fbc chitosan found increased increasing irradiation doses work thorough vivo investigation mice performed examine fbc irradiated chitosan kgy animal bodies different groups mice specimens fed gamma irradiated chitosan along natural rodent chow cheese well sufficient supply water unconsumed lipid measured feces found increase mice whose diet included kgy irradiated chitosan relative nonirradiated chitosan twelve weeks intimate observation mice sacrificed examine triglyceride total cholesterol content mice blood results demonstrated values mice fed gamma irradiated chitosan significantly lower control findings expected enhance future research irradiated chitosan used potential fat reducer human metabolism
introduction background metabolomics metabolomics comprehensive study metabolome repertoire biochemicals small molecules present cells tissues body fluids study metabolism global omics level rapidly growing field potential profound impact upon medical practice center metabolomics concept person metabolic state provides close representation individual overall health status metabolic state reflects encoded genome modified diet environmental factors gut microbiome metabolic profile provides quantifiable readout biochemical state normal physiology diverse pathophysiologies manner often obvious gene expression analyses today clinicians capture small part information contained metabolome routinely measure narrow set blood chemistry analytes assess health disease states examples include measuring glucose monitor diabetes measuring cholesterol high density lipoprotein low density lipoprotein ratio assess cardiovascular health bun creatinine renal disorders measuring panel metabolites diagnose potential inborn errors metabolism neonates objectives white paper expected treatment outcomes metabolomics enabling tool precision medicine anticipate narrow range chemical analyses current use medical community today replaced future analyses reveal far comprehensive metabolic signature signature expected describe global biochemical aberrations reflect patterns variance states wellness accurately describe specific diseases progression greatly aid differential diagnosis future metabolic signatures provide predictive prognostic diagnostic surrogate markers diverse disease states inform underlying molecular mechanisms diseases allow sub classification diseases stratification patients based metabolic pathways impacted reveal biomarkers drug response phenotypes providing effective means predict variation subject response treatment pharmacometabolomics define metabotype specific genotype offering functional read genetic variants provide means monitor response recurrence diseases cancers describe molecular landscape human performance applications extreme environments importantly sophisticated metabolomic analytical platforms informatics tools recently developed make possible measure thousands metabolites blood body fluids tissues tools also enable robust analysis response treatment new insights gained mechanisms diseases including neuropsychiatric disorders cardiovascular disease cancers diabetes range pathologies series ground breaking studies supported national institute health nih pharmacometabolomics research network partnership pharmacogenomics research network illustrate patient metabotype baseline prior treatment treatment post treatment inform treatment outcomes variations responsiveness drugs statins antidepressants antihypertensives antiplatelet therapies studies along several others also exemplify metabolomics data complement inform genetic data defining ethnic sex gender basis variation responses treatment illustrates pharmacometabolomics pharmacogenomics complementary powerful tools precision medicine conclusions key scientific concepts recommendations precision medicine metabolomics community believes inclusion metabolomics data precision medicine initiatives timely provide extremely valuable layer data compliments informs data obtained important initiatives metabolomics society precision medicine pharmacometabolomics task group input metabolomics community large developed white paper discuss value approaches including metabolomics data large precision medicine initiatives white paper offers recommendations selection state art metabolomics platforms approaches offer widest biochemical coverage considers critical sample collection preservation well standardization measurements among important topics anticipate metabolomics community representation large precision medicine initiatives provide input regard sample acquisition preservation selection optimal omics technologies key issues regarding data collection interpretation dissemination strongly recommend collection biobanking samples precisionmedicine initiatives take consideration needs large scale metabolic phenotyping studies
background objectiveperiodontitis infectious disease host immune inflammatory responses play essential roles resistance bacterial infection well induction tissue destruction immune response dysregulated triggering receptor expressed myeloid cells trems modulates inflammatory innate immune signaling trem considered amplifier immune response trem negative regulator yet explored periodontal disease hypothesized trems participated innate immune responses pathogenesis periodontitis therefore aim study evaluate trem trem expression gingival tissues patients chronic periodontitis healthy subjects well correlation clinical periodontal parameters study first identify trem periodontal tissue well protein expression changes trem trem periodontal tissues material methodsgingival tissue sections collected healthy subjects patients chronic periodontitis immunohistochemistry quantitative real time polymerase chain reaction employed evaluate protein mrna expression receptors gingival tissues recorded clinical parameters probing depth clinical attachment loss plaque index bleeding probing resultsin addition myeloid cells gingival connective tissues trem trem also found expressed gingival epithelial cells particular trem detected almost gingival epithelium healthy inflamed biopsies expression levels trem trem significantly increased periodontitis group compared healthy group increased levels receptors positively correlated site specific periodontal parameters conclusionthe increased expression trem trem levels periodontitis may confer diagnostic potential therapeutic targets well indicating association clinical severity disease
although gain chromosome one frequent dna copy number imbalances cervical squamous cell carcinoma scc genes drive selection remain poorly understood previous cross sectional clinical study showed microrna processor drosha located chromosome demonstrates frequent copy number gain overexpression cervical scc associated altered microrna profiles conducted gene depletion overexpression experiments demonstrate functional significance regulated drosha cervical scc cells drosha depletion rna interference rnai produced significant specific reductions cell motility invasiveness vitro silent rnai resistant drosha mutation providing phenotype rescue unsupervised hierarchical clustering following global profiling micrornas cervical scc cell line specimens generated two groups according drosha expression levels altering drosha levels individual scc lines changed group cells clustered gene depletion effects rescued rnai resistant mutation forty five micrornas showed significant differential expression groups including four differentially expressed association drosha levels clinical samples mir regulation drosha overexpressing samples cell lines highest ranked change adjusted value analyses observation validated northern blotting functional data support role drosha oncogene cervical scc affecting expression cancer associated micrornas potential regulate numerous protein coding genes copyright pathological society great britain ireland published john wiley sons ltd
paper addresses significant paradox biomaterials science biocompatibility phenomena experienced described years without agreed understanding framework mechanisms control events occur biomaterial exposed tissues human body need understanding become urgent biomaterials used wide ranging applications tissue engineering drug gene delivery imaging contrast agents detailed analysis phenomena especially terms clinical outcomes rather vitro experiments determines two overarching mechanisms mechanotransduction sterile inflammation associated damage associated molecular patterns responsible vast majority phenomena contrast interfacial interactions long assumed play pivotal roles biocompatibility especially relating protein adsorption actually relatively unimportant unless conformational changes able participate ecm development critical new view biocompatibility fact combination mechanotransduction sterile inflammation especially focusing inflammasome activation immunology balance inflammation fibrosis allows biomaterials science encompass mechanisms innate adaptive immunity without recourse traditional implications pathogen induced responses immune system way system biocompatibility pathways generated able explain wide range clinical biocompatibility challenges including nanoparticle translocation internalization intraocular lens opacification leukocyte dominated responses metallic wear debris joint replacement stem cell differentiation nanostructured hydrogels tissue responses incontinence meshes restenosis intravascular stents perhaps even importantly identification molecular pathways biocompatibility offers prospects control host response targeting specific points pathways example inhibition epithelial mesenchymal transformation result excessive fibrosis inhibition activation nlrp inflammasome following exposure biomaterial induced stresses lead effective translation biocompatibility understanding better clinical outcomes
purpose review purpose present review provide update current development field broadly neutralizing antibodies bnabs potential use prevention therapeutic settings evaluation cell abnormalities may impair antibody responses hiv infection recent findings major advances achieved characterization bnabs directed different vulnerable regions hiv envelope env recent observations clearly demonstrated ability bnabs prevent hiv infection nonhuman primate model hiv infection suppress viremia individuals chronic hiv infection absence antiretroviral therapy furthermore substantial advances also obtained development hiv env proteins immunization strategies inducing bnabs small animal models several studies also shed light cell abnormalities associated viremic phase hiv infection cause impaired cell maturation antibody responses note preliminary observations provided evidence correlation expansion specific population cells example germinal center cells expansion follicular helper cells tfh generation neutralizing antibodies summary recent observations antiviral effects bnabs vivo indicate bnabs may play central role prevention therapeutic settings identification role germinal center cells tfh cells critical components immune response leading generation neutralizing antibodies allow development specific immunization strategies stimulation germinal center cells tfh cells lot work still remains done delineation cell tfh cell biology human lymphoid tissues development hiv env proteins immunization strategies leading generation bnabs
exosomes small extracellular vesicles evs secreted many cell types normal pathogenic circumstances evs particularly exosomes known transfer biologically active proteins rnas lipids cells recently become focus intense interest potential mediators cell cell communication particularly long range juxtacrine signaling events associated adaptive immune function progression cancer among evs exosomes appear particularly adapted long range delivery cargoes cells association disease states exciting potential exosomes serve diagnostic biomarkers target specific biomolecule delivery vehicles stimulated broad range biomedical investigations learn exosomes generated cargoes might tailored uptake remote targets addressing questions requires experimental models biochemically useful amounts material harvested gene expression easily manipulated interpretable biological assays developed early xenopus embryo fulfills model system ideals vivo context morphogenesis embryo develops several large fluid filled extracellular compartments across numerous tissue specifying signals must cross abundantly endowed exosomes evs importantly certain surface facing tissues avidly ingest evs gastrulation recent work demonstrated evs isolated interstitial spaces amounts suitable proteomic transcriptomic analysis large numbers great cell size well understood fate map tolerance variety experimental approaches xenopus embryo provides unique opportunity understand manipulate basic cell biology exosomal trafficking context intact organism
produce agronomically competitive rice nutritionally superior environmentally safe phytic acid levels hairpin rna hprna artificial microrna amirna mediated gene silencing approaches explored reduce myo inositol kinase gene osmik expression accumulation rice seeds hprna amirna sequences targeted osmik hpmik amimik control rice ole promoter transformed rice cultivar nippon bare fourteen independent transgenic events identified containing hpmik amimik constructs respectively five stable homozygous transgenic lines developed together null siblings southern blotting demonstrated transgene integration genome quantitative real time pcr showed gene silencing restricted seeds osmik transcripts significantly reduced transgenic amimik hpmik seeds levels reduced respectively compared respective null siblings systematic significant differences agronomic traits transgenic lines non transgenic siblings correlation seed contents decreased rates seed germination seedling emergence results present study suggest ole driven osmik silencing via hprna amirna could effective way develop agronomically competitive low phytic acid rice
magnaporthe oryzae chrysovirus strain mocv causal agent growth repression attenuated virulence hypovirulence rice blast fungus magnaporthe oryzae previously revealed heterologous expression mocv orf protein resulted cytological damage yeasts saccharomyces cerevisiae cryptococcus neoformans since orf protein one components viral particles evaluated inhibitory effects purified virus particle conidial germination oryzae confirmed suppressive effects recombinant mocv orf protein produced pichia pastoris also effective suppression conidial germination oryzae mocv orf protein sequence showed significant similarity related mycoviral proteins botrysphaeria dothidea chrysovirus two fusarium graminearum viruses fusarium oxysporum dianthi mycovirus penicillium janczewski chrysovirus agaricus bisporus virus chrysoviridae family multiple alignments orf related protein sequences showed central regions mocv orf relatively conserved indeed yeast transformants expressing conserved central region mocv orf protein showed similar impaired growth phenotypes observed yeasts expressing full length mocv orf protein data suggest mycovirus encoded viral protein useful anti fungal proteins control rice blast disease caused oryzae pathogenic fungi elsevier rights reserved
analysis interpretation skeletal lead relatively common anthropological research employing chemical analyses human tissues provide additional dimension research paper presents rationale case study illustrating use skeletal lead isotope data address problems group affinity radiogenic origin three four stable lead isotopes give lead given geologic deposit source characteristic isotopic signature lead fractionate measurably biological systems including human metabolism isotopic composition skeletal lead reflects source lead individuals exposed assumed different cultural groups exposed different sources lead natural processes cultural practices given assumption lead isotope analysis eight unidentified skeletons two native north americans six fur traders century fur trade cemetery conducted results indicate predicted native north american fur trader skeletal remains different skeletal lead isotopic compositions differences generally congruent two primary sources lead available academic press limited
gastrointestinal stromal tumors gists common mesenchymal neoplasms digestive tract incidence cases inhabitants year group experts spanish society pathology spanish society oncology met discuss brief update gists agree aspects relating pathological molecular diagnosis tumors gists generally solitary well circumscribed lesions variable size may present intra extra luminal parietal growth mixed type hourglass growth pattern histologically unencapsulated neoplasms displaying expansive growth spindle shaped epithelioid mixed cellularity mitotic activity generally moderate low evaluated areas high cellularity higher mitotic frequency great majority gists harbour mutually exclusive activating mutations genes coding type iii receptor tyrosine kinases kit pdgfra less commonly gists also reported display mutations elsewhere including braf sdh complex genes method widely used detect kit pdgfra mutations amplification exons involved polymerase chain reaction followed direct sequencing sanger method amplification products molecular analyses always specify type analysis performed region mutations evaluated sensitivity detection method employed
genetically engineered crops insecticidal toxins derived bacterium bacillus thuringiensis planted world two decades aiming control major insect pests crop strategy generally successful potential risk evolution insect resistance crops modeling one main approaches assessing risk date however importance spatial heterogeneity small holder farm systems adequately addressed address question developed analyzed spatially explicit model insect population dynamics genetics proportion crops pbt spatially heterogeneous homogeneous found single two locus models time takes insect evolve regional resistance ttr varies among different patterns ttr could differ considerably case depending spatial non spatial conditions conditions regional evolution resistance much faster case case difference two cases caused gene spread hotspots resistant alleles local pbt much higher average results suggest spatial heterogeneity pbt may significantly affect speed regional resistance therefore important factor taken account quantitative predictions well design resistance management strategies elsevier rights reserved
prdm proteins emerged important regulators disease developmental processes gain insight mechanistic actions prdm family performed comprehensive characterization prototype member protein histone methyltransferase prdm using biochemical biophysical chemical biology techniques present paper report first known molecular characterization prdm methylated recombinant histone octamer identification new histone substrates enzyme single mutant set domain demonstrated significantly weaken prdm activity additionally optimized robust biochemical assay amenable high throughput screening facilitate generation small molecule chemical probes protein family present study provided valuable insight enzymology intrinsically active prdm protein
major challenge enzymology need correlate dynamic properties enzymes understand impact catalytic cycles especially case large multicenter enzymes nitric oxide synthases noss importance dynamics inferred variety structural single molecule ensemble spectroscopic approaches motions correlated experimentally mechanistic steps reaction cycle take approach using time resolved spectroscopy employing absorbance forster resonance energy transfer fret exploiting properties flavin analogue deazaflavin mononucleotide dfmn isotopically labeled nicotinamide coenzymes correlate timing cam structural changes bound neuronal nitric oxide synthase nnos nnos catalytic cycle show remodeling cam occurs early electron transfer sequence fad reduction later points reaction cycle fmn reduction conformational changes tightly correlated fad reduction kinetics reflect transient opening closure bound cam molecule infer displacement terminal tail binding nadph subsequent fad reduction likely triggers conformational change combining use cofactor coenzyme analogues time resolved fret absorbance spectrophotometry show reaction cycles complex enzymes simplified enabling detailed study relationship protein dynamics reaction cycle chemistry approach also used complex multicenter enzymes
telomere repetitive dna structure capping chromosomal ends telomeres stabilize chromosome structure prevent harmful end end recombinations telomere length somatic cells call determined fie terminal restriction fragment length provided genomic southern blotting analysis telomere length becomes shorter mitotic cycle due end replication problem therefore older somatic cells undergone mitotic cycles bear shorter telomeres telomere shortening accelerated various disease condition parkinson disease also yields telomere fragility thus accelerating telomere shortening circulating leukocytes study found peripheral leukocytes japanese patients bear fewer short telomeres constant subtelomeric methylation status ill comparison health controls increasing short telomeres also increasing hypomethylated subtelomeres short telomeres aging correlation telomeric attrition subtelomeric methylated state herein discussed
natural killer cells innate immune lymphocytes play critical roles host defense viral infection surveillance malignant transformation long noncoding rnas lncrnas important immune system regulators analyzed human primary lymphocyte lncrna expression profiles identify lncrna signatures detected numerous novel specific lncrnas potential roles regulating human cell differentiation function expression lnc specific lncrna positively correlated classical human cell surface marker showed lnc may function positive regulator primary human cells differentiated cells human hematopoietic progenitor cells data provide annotated human cell lncrna expression catalog demonstrate key role lncrnas cell biology
artificial insemination cryopreserved semen enables affordable large scale dissemination gametes superior genetics however cryopreservation cause functional structural damage spermatozoa associated reactive oxygen species ros production impairment sperm motility decreased fertilizing potential little attention paid protein changes goal study investigate oxidative modifications measured carbonylation level changes bull spermatozoa proteins triggered cryopreservation process flow cytometry computer assisted sperm analysis used evaluate changes viability ros level motility spermatozoa western blotting conjunction two dimensional electrophoresis oxyblot matrix assisted laser desorption ionization time flight time flight spectrometry employed identify quantify specifically carbonylated spermatozoa proteins cryopreservation decreased motility viability increased number ros positive cells identified proteins ropporin outer dense fiber protein glutathione transferase triosephosphate isomerase capping protein beta isoform actin related protein actin related protein nadh dehydrogenase isocitrate dehydrogenase cilia flagella associated protein phosphatidylethanolamine binding protein showing differences protein carbonylation response cryopreservation identified proteins associated cytoskeleton flagella organization detoxification energy metabolism moreover almost identified carbonylated proteins involved capacitation results indicate first time cryopreservation induces oxidation selected sperm proteins via carbonylation suggest carbonylation sperm proteins could direct result oxidative stress potentially lead disturbances capacitation involved proteins could indicate cryopreservation induced premature capacitation published elsevier inc
introduction pneumocystis jirovecii ubiquitous fungus causes pneumonia humans diagnosis hampered inability culture organism based microscopic examination respiratory samples clinical presentation new assays assist diagnosis even aid emergence resistant infections areas covered manuscript provide background information pneumocystis pneumonia pcp diagnosis radiological non microbiological lactate dehydrogenase microbiological investigations microscopy pcr beta glucan discussed recommendations prophylactic therapeutic management covered expert commentary pcp diagnosis using microscopy far optimal false negatives occur incidence less pre test probability pcp testing suited excluding disease microscopy provides high degree diagnostic confidence infallible lower sensitivity limits application newer diagnostics pcr beta glucan aid management improve performance testing less invasive specimens upper respiratory samples blood alleviating clinical pressure combination testing may allow pcp diagnosed excluded molecular testing assist detection emerging resistant pcp
background bovine theileriosis caused haemoprotozoan theileria orientalis emerging disease east asia australasia previous studies demonstrated transplacental transmission various theileria spp molecular confirmation transplacental transmission orientalis never confirmed field study cow calf old pairs sampled across herds opportunistic samples aborted foetuses stillborn calves also examined molecular multiplex qpcr serological elisa methods used determine infection prevalence presence anti theileria antibodies herd addition pregnant heifers foetal calves sampled abattoir tested presence orientalis qpcr results qpcr results indicated even though high prevalence orientalis infection cows rate transplacental transmission calves low one newborn calf one herd one foetus abattoir testing positive orientalis dna five aborted foetuses stillborn calves derived herd experiencing high number clinical theileriosis cases time sampling tested negative orientalis qpcr suggests utero infection calves orientalis may major driver abortions theileriosis outbreaks temporal monitoring calves born orientalis positive mothers indicated orientalis detectable calves days post partum consistent prior field studies adult cattle introduced theileria affected herds positive correlation elisa ratio newborn calves mothers within calving however maternal antibodies detectable calves weeks post partum calves displayed high parasite loads peaking weeks post partum calves subsequently mounting detectable adaptive antibody response conclusions findings indicate transplacental transmission orientalis appears play minor role persistence orientalis infection field however calves highly susceptible developing high level orientalis infections weeks age regardless whether maternal antibodies present post partum
given immunity general role organism economy terms internal environment well mediating external relations immune theory expanded traditional formulation preserving individual autonomy one includes accounting nutritional processes symbiotic relationships require immune tolerance full ecological alignment adopted immune system becomes mediator defensive assimilative environmental intercourse balance immune rejection tolerance governs complex interactions organism ecological relationships accordingly immunology historically affiliated biology individuals becomes science concerned biology communities translocation ontological basis organism undergoing profound change indeed recent recognition ubiquity symbiosis challenged traditional notions biological individuality requires shift metaphysics undergirding biology philosophy organism must characterized ecological dialectics way
though hundreds thousands reports described distribution chromosomes among diverse eukaryote groups comprehensive theory biological role yet clearly emerged chromosomes classically understood sea repetitive dna sequences poor genes maintained parasitic drive mechanism cell division recent developments high throughput dna rna analyses increased resolution chromosome biology beyond classical molecular cytogenetic methods chromosomes contain many transcriptionally active sequences including genes modulate activity autosomal genes furthermore recent knowledge obtained omics analyses associated systemic view demonstrated chromosomes influence cell biology complex way possibly favoring maintenance perpetuation
invasive species successfully establish persist expand within area introduction spite demographic bottlenecks reduce genetic diversity represent paradox bottlenecks inhibit population growth invasive expansion decrease genetic diversity result inbreeding depression increased fixation deleterious mutations genetic drift drift load reduced evolutionary potential respond novel selection pressures focus problems inbreeding depression drift load introduced populations key components genetic paradox invasions gpi briefly review published explanations gpi based various mechanisms invasion history events reproductive traits genetic characteristics mediate avoidance inbreeding depression drift load find still substantial lack explanation empirical evidence explaining gpi strongly bottlenecked invasions critical invasion phases initial colonization leading edges range expansion strong genetic depletion inbreeding depression drift load occurs accordingly suggest discussion gpi revived find additional mechanisms applicable explaining invasion success species invasion phases based synthesis literature population genetics invaders ecology invaded habitats propose inbreeding environment ixe interactions one mechanism may strong explanatory power address gpi specifically suggest temporary permanent release stress invaded habitats may alleviate negative effects genetic depletion fitness via ixe interactions present published empirical evidence supporting hypothesis additionally discuss ixe interactions result rapid evolutionary changes may even contribute adaptation invaders absence high genetic variation view encouraging empirical research propose experimental approach investigate occurrence ixe interactions ongoing invasions revived research gpi provide new fundamental insights eco evolutionary invasion biology generally evolutionary consequences interactions inbreeding environment
packaging eukaryotic dna nucleosomes organisation nucleosomes chromatin plays critical role regulating dna associated processes chromodomain helicase dna binding protein chd atp dependent chromatin remodelling protein conserved throughout eukaryotes ability assemble organise nucleosomes vitro vivo activity involved regulation transcription implicated mammalian development stem cell biology chd classically depicted possessing pair tandem chromodomains directly precede core catalytic helicase like domain followed sant slide dna binding domain identified additional conserved domain terminal sant slide domain determined structure multidimensional heteronuclear nmr spectroscopy termed domain chd helical terminal chct domain comprised five helices arranged variant helical bundle topology chct conserved positively charged surface able bind dna nucleosomes addition identified another group proteins yet uncharacterised corf proteins also containing conserved chct domain data provide new structural insights chd enzyme family elsevier ltd rights reserved
isolation rna recalcitrant tree tissues problematic due large amounts secondary metabolites interfering compounds cells developed efficient rna extraction method yielded high quality rna preparations tissues lychee tree method reported utilized edta lss ctab successfully inhibit rnase activities found high ionic strength brought nacl necessary addition secondary metabolites interfering compounds effectively removed using sodium borate pvpp deoxidized condition quality purified rna tested race northern blotting analysis ensuring rna could used subsequent gene expression analysis method successfully applied purify rna plant species conclusion protocol reported expected excellent applications rna isolation recalcitrant plant tissues
phenolic compounds recently recognized influence human metabolism acting prevention chronic diseases well proving important antioxidants food nevertheless extraction concentration processes usually carried organic solvent extraction natural sources generate drawbacks like phenolic compound degradation lengthy process times low yields solution eco friendly technologies including solid state fermentation ssf enzymatic assisted reaction proposed alternative processes article reviews extraction phenolic compounds agro industrial products solid state fermentation even friendly enzyme assisted extractions also discusses characteristics bioprocess system variables affect product formation well range substrates microorganisms enzymes useful production bioactive phenolic compounds
substrate binding enzymes often follows precise order catalysis accomplished programmed conformational changes short chain dehydrogenase reductase sdr enzymes follow sequential order reaction kinetics mechanistic study sdr homolog reductase domain multifunctional enzymes nonribosomal peptide synthetases nrpss polyketide synthases pkss revealed reductively releases phosphopantetheinyl arm tethered peptidyl product report domains nrpss mycobacterium tuberculosis nrp mycobacterium smegmatis gpl strictly adhere obligatory mode catalysis performed sdrs instead carry reductive catalysis substrate following random reaction mechanism deciphered nmr saxs studies crucial conformational change associated nadph binding necessary achieve catalytically competent conformation also delineated saxs studies using itc demonstrated mutation catalytic tyrosine phenylalanine domains results fold decrease affinity nadph attribute phenomenon loss noncovalent cation interactions present tyrosine nicotinamide ring propose adaptation alternative theme catalytic mechanism enables domains process substrates transferred upstream domains maintain assembly line enzymology elsevier inc rights reserved
international prevalence legal high drugs necessitates development method detection identification herein describe development validation tetraplex multiplex real time polymerase chain reaction pcr assay used simultaneously identify morning glory jimson weed hawaiian woodrose marijuana detected high resolution melt using lcgreen plus pcr assay evaluated based following specificity selectivityprimers tested dna extracted species simulated forensic samples sensitivityserial dilutions target dna prepared iii reproducibility reliabilitysample replicates tested remelted different days assay ideal cases inexpensive assays needed quickly detect identify trace biological material present drug paraphernalia compromised botanical microscopic identification analysts unfamiliar morphology emerging legal high species
metastatic detection rate vary according approach adopted microscopic analysis lns includes frozen section examination total inclusion tissue without whole mount sections serial sectioning application immunohistochemistry assessment sentinel search micrometastases evaluation atypical metastatic sites contribute detection metastatic spread review update histopathological evaluation lnd specimens patients pca given focus made clinical prognostic significance
african horse sickness ahs fatal disease equids relevant global equine industry detection ahs virus ahsv outbreaks become rapid efficient advent group specific reverse transcriptase quantitative polymerase chain reaction qpcr assays detect ahsv nucleic acid use qpcr together recently described type specific qpcr assays expedite diagnosis ahs also facilitate evaluation dynamics ahsv infection equine host potential limitation application assays detect viral nucleic acid originating ahs live attenuated vaccine lav vaccine type routinely administered horses south africa aim study contrast dynamics duration rnaaemia serological responses horses following immunization commercial polyvalent ahsv lav using qpcr assays serum neutralisation tests results study showed extended rnaemia vaccinated horses horses tested positive qpcr lower values receiving ahsv lav containing types prior vaccine containing types rather vaccine combinations reversed furthermore lower values obtained vaccines administered weeks apart compared longer interval weeks apart findings particular relevance regions ahsv lavs used use vaccines may complicate accurate interpretation diagnostic testing results elsevier ltd rights reserved
aims investigated mechanism valsartan selective antagonist angiotensin subtype receptor decreased plasma glucose streptozotocin stz induced diabetic rats methods plasma glucose concentration assessed glucose oxidase method concentration beta endorphin plasma medium incubating adrenal medulla measured using enzyme linked immunosorbent assay mrna levels subtype form glucose transporter glut soleus muscle phosphoenolpyruvate carboxykinase pepck liver detected northern blotting analysis protein levels glut isolated soleus muscle hepatic pepck investigated using western blotting analysis results single intravenous injection valsartan dose dependently increased plasma beta endorphin like immunoreactivity ber parallel lowering plasma glucose concentration stz induced diabetic rats naloxone naloxonazine inhibited plasma glucose lowering action valsartan doses sufficient block opioid receptors contrast action wild type diabetic mice valsartan failed modify plasma glucose opioid receptor knockout diabetic mice bilateral adrenalectomy stz induced diabetic rats eliminated plasma glucose lowering action plasma ber elevating action valsartan isolated adrenal medulla stz induced diabetic rats angiotensin ang valsartan affect spontaneous ber secretion activation cholinergic receptors mol acetylcholine ach enhanced ber secretion isolated adrenal medulla stz induced diabetic rats presence nmol ang valsartan reversed inhibition ang concentration dependent manner treatment stz induced diabetic rats valsartan three times daily days resulted increase gene expression glut soleus muscle impeded reduction elevated mrna protein level hepatic pepck effects blocked opioid receptor antagonist conclusions results suggest blockade receptor valsartan may enhance adrenal beta endorphin secretion induced ach activating opioid receptors increase glucose utilization decrease hepatic gluconeogenesis resulting reduction plasma glucose stz induced diabetic rats
desii member radical sam family enzymes catalyzes radical mediated transformations tdp amino didexoy glucose well sugar nucleotide diphosphates like nearly radical sam enzymes reactions begin reductive homolysis sam produce deoxyadenosyl radical followed regiospecific hydrogen atom abstraction substrate happens next however depends nature substrate radical produced case biosynthetically relevant substrate radical mediated deamination ensues however amino group replaced hydroxyl one instead observes dehydrogenation factors govern fate initially generated substrate radical well mechanistic details underlying transformations key focus research chemistry desii review discuss recent discoveries pertaining enzymology desii may relate understanding radical mediated lyases dehydrogenases working hypotheses currently investigated regarding mechanism desii catalysis
aim replicate genome wide associations antihypertensive effects bisoprolol losartan genres using finnish patients life study patients methods analyzed association four snps atenolol three snps losartan response finnish life patients atenolol losartan results variation transcription start site acy associated blood pressure response atenolol men life response bisoprolol correlated baseline plasma levels acetylphenylalanine phenylalanine acy substrate end product respectively genres study nphs variation associated losartan effect life conclusion provide support two pharmacogenomic markers beta blockers angiotensin receptor antagonists
bruxism brx condition great interest researchers clinicians dental medical areas brx two circadian manifestations occur sleep sleep bruxism wakefulness awake bruxism however suffered together recent investigations suggest central nervous system neurotransmitters genes could involved genesis brx serotonin responsible circadian rhythm maintaining arousal regulating stress response muscle tone breathing thus serotonin could associated brx pathogenesis aim work evaluate frequency genetic polymorphisms genes htra htra htrc slca subjects undergoing brx treatment patients included classified according diagnosis awake bruxism patients sleep bruxism patients patients control group included healthy patients signs brx data showed significant differences allelic frequencies htra polymorphism allele associated increased risk odds ratio confidence interval results suggest polymorphisms serotonergic pathways involved sleep bruxism research needed clarify increase current understanding brx physiopathology
drim nucleolar protein nucleolar targeting sequence terminus bioinformatic analysis indicated human drim shares identity similarity yeast utp reported component snorna protein complex implicated rrna processing present study found utilizing pcr rna extracted anti drim inummoprecipitates northern blotting drim associated snorna pulse chase labeling assays showed silencing drim expression hela cells resulted delayed rrna processing furthermore immunoprecipitations revealed drim also associated fibrillarin another rnp component hela cells results indicate drim involved rrna processing bona fide mammalian utp elsevier rights reserved
food poisoning staphylococcus aureus result ingestion staphylococcal enterotoxins ses produced bacterium major source foodborne illness staphylococcal enterotoxin sed one predominant enterotoxins recovered staphylococcal food poisoning incidences including recent outbreak guam affecting children current immunology methods sed detection distinguish biologically active form toxin poses threat inactive form poses threat vivo bioassays measure emetic activity kitten monkeys used methods rely upon expensive procedures using live animals raising ethical concerns rapid quantitative bioluminescence assay using genetically engineered cell jurkat cell line expressing luciferase regulation nuclear factor activated cells response elements combination lymphoblastoid cell line raji antigen presentation developed assay detection limit biologically active sed times sensitive splenocyte proliferation assay times sensitive monkey kitten bioassay pasteurization repeated freeze thaw cycles effect sed activity reduction sed activity shown heat treatment degrees min also shown milk exhibits protective effect sed bioluminescence assay may also used rapidly evaluate antibodies sed potential therapeutic application measurement neutralizing biological effects sed
present label free biosensor detection nucleic acids pcr amplicons based surface plasmon resonance spr novel dna intercalators intercalators specifically bind double stranded dna dna allowing dna quantitatively monitored angle shifts spr following mass changes spr sensor surface pyrenyl intercalator compounds synthesized consisted pyrenyl groups intercalating moieties ethylene glycol hexamer linkers resist non specific binding events thiol groups formed self assembled monolayers sams gold substrate also hydroxyl group terminated compound instead pyrenyl group synthesized ensure adequate separation adjacent pyrene groups molar concentration ratio mixed sams spr sensor surface selected maximum mass sensitivity basis experimental results various mixed ratios finally investigated sensor responses due intercalations various concentrations applied pure dna demonstrated capability analysis pcr amplicons reaction product mixtures without purification process results show proposed label free biosensor devised based strong binding interactions dna intercalators base pairs dna quantitatively analyze dna accordance elsevier rights reserved
comparative enzymology explores molecular mechanisms alter properties enzymes best fit adapt biotic demands abiotic stresses affect cellular environment protein catalysts function many years comparative enzymology primarily concerned analyzing enzyme functional properties substrate affinities allosteric effectors responses temperature stabilizers naturants etc order determine enzyme properties optimized function changing conditions recently became apparent posttranslational modifications enzymes play huge role metabolic regulation first modifications appeared target crucial regulatory enzymes recent work showing many dehydrogenases also targets posttranslational modification leading substantial changes enzyme properties present article focuses particular lactate dehydrogenase ldh showing stress induced changes enzyme properties linked reversible posttranslational modifications changes phosphorylation state ldh occur response dehydration stress frogs anoxia exposure turtles snails furthermore studies show ldh also target posttranslational modifications including acetylation methylation ubiquitination change response anoxia dehydration stress selected new methods exploring posttranslational modifications dehydrogenases discussed new challenges future comparative enzymology presented help achieve deeper understanding biochemical adaptation enzyme regulation elsevier inc rights reserved
background posner schlossman syndrome pss characterized recurrent unilateral attacks ocular hypertension surgical treatment sometimes necessary intraocular pressure iop controlled anti glaucoma medications identify clinical features posner schlossman syndrome pss indicative need intraocular pressure iop controlling surgery methods study retrospective case series analysis clinical charts patients diagnosed pss underwent surgery control iop received medication various clinical factors compared surgical medication groups results surgical group higher corneal endothelial cell cec density loss higher maximum iop greater visual field loss higher positive number cytomegalovirus cmv non surgical group eighteen patients high cec reduction ratio required glaucoma surgery conclusions pss patients higher cec reduction ratio higher maximum iop greater visual field loss higher positive number cmv aqueous humor tended likely require progressive treatment glaucoma surgery
angiogenesis process induced hypoxia visceral white adipose tissues vwat context obesity mediates obesity induced metabolic dysfunction insulin resistance chronic intermittent hypoxia sustained hypoxia induce body weight reductions insulin resistance different magnitudes suggesting different hypoxia inducible factor hif alpha related activity eight week old male cbl mice group exposed either room air vwat analyzed insulin sensitivity phosphorylated pakt akt hif alpha transcription using chromatin immunoprecipitation chip sequencing angiogenesis using immunohistochemistry gene expression different fat cell markers hif alpha gene targets using quantitative polymerase chain reaction microarrays body vwat weights reduced hypoxia induces preferential whitening vwat opposed prominent browning unlike elicits early hif alpha activity unsustained time accompanied concurrent vascular rarefaction inflammation insulin resistance thus dichotomous changes hif alpha transcriptional activity brown beige white fat balance enable exploration mechanisms altered sympathetic outflow occurs apneic patients results whitening rather anticipated browning adipose tissues occurs
background mammalian lignans enterolactone enterodiol produced colon action bacteria plant precursor secoisolariciresinol diglycoside found high concentrations flaxseed objective two experiments conducted determine whether dose response urinary lignan excretion increasing flaxseed intake whether flaxseed processing affects lignan excretion peak plasma lignan concentrations plasma lignan concentrations chronic supplementation design nine healthy young women supplemented diets raw processed muffin bread flaxseed follicular phase menstrual cycles twenty four hour urine samples collected baseline final day supplementation adjunct flaxseed arm subjects consumed supplement additional day blood urine samples collected specific intervals blood urine samples analyzed enterolactone enterodiol gas chromatography mass spectroscopy results dose dependent urinary lignan response raw flaxseed observed less equal processing flaxseed muffin bread affect quantity lignan excretion plasma lignan concentrations greater less equal baseline flaxseed ingestion nmol respectively total plasma area curve higher eighth first day nmol respectively conclusion mammalian lignan production flaxseed precursors dependent time dose processing
present study reports independent classic articles published american scientists examined articles cited least times since publication end using science citation index expanded web science wos also applied bibliometric indicator index assess contributions authors articles results showed classic articles published productive categories wos multidisciplinary sciences biochemistry molecular biology general internal medicine science published articles three productive institutions harvard university massachusetts institute technology stanford university physicist edward witten prolific author article written biochemist marion bradford university georgia highest number citations addition article perdew burke ernzerhof tulane university highest number citations
itk interleukin inducible cell kinase critical component signal transduction cells well validated role proliferation cytokine release chemotaxis itk attractive target treatment cell mediated inflammatory diseases present study describe discovery kinase inhibitors preferentially bind allosteric pocket itk novel itk allosteric site characterized nmr surface plasmon resonance isothermal titration calorimetry enzymology ray crystallography initial screening hits bound allosteric pocket atp site successful lead optimization achieved improving contribution allosteric component overall inhibition nmr competition experiments demonstrated dual site binders showed higher affinity allosteric site compared atp site moreover optimized inhibitor displayed noncompetitive inhibition respect atp shown steady state enzyme kinetics activity isolated kinase domain auto activation full length enzyme inhibited similar potency however inhibition activated full length enzyme weaker presumably allosteric site altered itk becomes activated optimized lead showed exquisite kinome selectivity efficacious human whole blood proximal cell based assays
little known regarding regulation microrna mirna biogenesis normal tissues tumors cell lines profiled expression precursor mature mirnas using real time pcr compared expression levels determine processing patterns rna different human tissues human cancer cell lines pancreas liver tissues tumors profiled relationship precursor mature mirna expression fell following four categories direct correlation exists precursor mature mirna expression cells tissues studied direct correlation precursor mature mirna exists yet expression restricted specific cell lines tissues detectable expression mature mirna certain cells tissues precursor expressed cells tissues precursor mature mirna expressed pearson correlation precursor mature mirna expression closer one tissues closer zero cell lines suggesting processing precursor mirnas reduced cancer cell lines using northern blotting show many mirnas mir mir mir processed precursor situ hybridization analysis demonstrates mirna precursors retained nucleus provide database levels precursor mature mirna variety cell types data demonstrate large number mirnas transcribed processed mature mirna
burkholderia mallei pseudomallei cause glanders melioidosis respectively humans animals hallmark pathogenesis formation granulomas containing multinucleated giant cells mngcs cell death processes depend type secretion system tss required virulence animals examined cell biology mngc formation cell death found chloroquine diphosphate clq antimalarial drug inhibits burkholderia growth phagosomal escape subsequent mngc formation depends clq ability neutralize acid alkalinizing compounds similarly inhibit escape mngc formation clq inhibits bacterial virulence protein expression tss effectors type secretion system tss also required virulence expressed acid show acid upregulates expression hcp tss tssm protein coregulated tss finally demonstrate clq treatment burkholderia infected madagascar hissing cockroaches hcs increases survival study highlights multiple mechanisms clq inhibits growth virulence suggests clq tested considered conjunction antibiotic use treatment diseases caused burkholderia
triacylglycerols crepis alpina oil characterized oil high concentration crepenynic cis odadecen ynoic acid fatty acid useful chemical synthesis deuterated fats human metabolism studies triacylglycerols separated crude oil solid phase extraction resolution quantitation isolation individual triacylglycerols performed silver ion high performance liquid chromatography commercial column acetonitrile hexane isocratic mobile phase flame ionization detection isolated triacylglycerols identified capillary gas chromatography fatty acid methyl esters eleven eluted triacylglycerols crepis alpina oil included tricrepenynoyl linoleoyldicrepenynoyl dilinoleoylcrepenynoyl glycerols triacylglycerols eluted according numbers alkene alkyne bonds elution times resolution quantitation reproducible three month period flame ionization detector response required response factors quantitation triacylglycerols present crepis alpina oil silver ion chromatography system permitted identification triacylglycerols compared triacylglycerols previously identified reversed phase high performance liquid chromatography
carried molecular analyses novel flaky skin mutation ttc fsn jic synonym fsn jic found previous study revealed mutation involved genomic frame deletion including exons ttc gene genomic deletion ttc fsn jic may disrupt tetratricopeptide repeat domain ttc protein based comparison three ttc mutations including ttc fsn synonym fsn ttc fsn hea synonym hea suggested either exon exon may play important role exons ttc gene ttc gene expression analyses using northern blotting revealed ttc mrna expressed tissues except muscle conclusion confirmed ttc fsn jic mutation well ttc fsn ttc fsn hea mutations responsible abnormal phenotypes observed various tissues mice flaky skin mutation
aim explore functional role cullin cula core subunit ubiquitin ligase perihilar cholangiocarcinoma phcc methods expression cula phcc cell lines evaluated western blot quantitative reverse transcription polymerase chain reaction immunohistochemistry ihc adopted investigate relationship cula expression clinicopathological characteristics phcc univariate analysis multivariate regression analysis performed analyze risk factors related overall survival progression free survival pfs phcc patients wound healing transwell matrigel assays utilized explore function cula phcc metastasis furthermore expression epithelial mesenchymal transition emt markers verified cells cula knockdown overexpression relationship cula expression cadherin expression also analyzed ihc assay finally role zeb regulating cula mediated phcc detected ihc western blot transwell matrigel assays results cula overexpression detected phcc cell lines clinical specimens clinicopathological analysis revealed close correlation cula overexpression tumour differentiation tnm stages phcc kaplan meier analysis revealed high cula expression correlated poor pfs phcc patients univariate analysis identified following four parameters risk factors related rate phcc tnm stages high cula expression well three related pfs stage tnm stage high cula expression multivariate logistic regression analysis identified high cula expression independent prognostic factor phcc moreover cula silencing phcc cell lines dramatically inhibited metastasis emt conversely cula overexpression promoted processes mechanistically zeb discovered regulate function cula promoting emt metastasis conclusion cula independent prognostic factor phcc promote emt regulating zeb expression cula may potential therapeutic target phcc
background breast cancer frequently diagnosed cancer women resident macrophages distant sites provide highly responsive immunologically dynamic innate immune response foreign infiltrates despite extensive characterization role macrophages immune cells malignant tissues little known mechanisms facilitate metastatic breast cancer spread distant sites immunological integrity mechanisms key healthy defense mechanism fails protect distant sites infiltration metastatic cells cancer patients remain undefined breast tumors typical many tumor types shed membrane vesicles called microparticles mps ranging size diameter mps serve vectors intercellular transfer functional proteins nucleic acids drug sequestration addition mps also emerging important players evasion cancer cell immune surveillance methods comparative analysis effects mps isolated human breast cancer cells non malignant human brain endothelial cells examined thp derived macrophages vitro mediated effects cell phenotype functionality assessed cytokine analysis cell chemotaxis phagocytosis immunolabelling flow cytometry confocal imaging student test one way analysis variance anova used comparison statistical analysis results paper report discovery new cellular basis immune evasion mediated breast cancer derived mps mps shed multidrug resistant mdr cells shown selectively polarize macrophage cells functionally incapacitated state facilitate engulfment foreign cells conclusions propose mechanism may serve physically disrupt inherent immune response prior cancer cell colonization whilst releasing mediators required recruitment distant immune cells findings introduce new paradigm cancer cell biology significant implications understanding breast cancer colonization distant sites importantly also first demonstration mps serve conduits parallel pathway supporting cellular survival mdr cancer cells immune evasion
aim rna seq analysis recently identified nucleotide transcript upstream mals salmonella enterica serovar typhi investigated molecular characteristics function materials methods race northern blotting used determine molecular characteristics sequence mutagenesis microarray immunoblotting invasion assay used investigate functions transcript results transcript identified mals untranslated region utr could influence expression flagellar spi genes invasion hela cells typhi deletion bax increased expression invasion genes invasive capacity typhi whereas expression mals utr reduced expression bax conclusion mals utr reduces expression bax increases invasive capacity typhi
middle east respiratory syndrome corona virus mers cov transmitted via respiratory tract causes severe acute respiratory distress syndrome infecting lung epithelial cells macrophages macrophages readily recognize virus eliminate mers cov infects cells via spike glycoprotein binds dipeptidyl peptidase dpp receptor present macrophages whether spike dpp association affects macrophage responses remains unknown herein demonstrated infection macrophages lentiviral particles pseudotyped mers cov glycoprotein results suppression macrophage responses since reduced capacity macrophages produce tnfa naive lps activated thp macrophages augmented lps induced production immunosuppressive cytokine mers cov glycoprotein induced expression negative regulator tlr signaling irak well transcriptional repressor ppar gamma inhibition dpp inhibitor sitagliptin sirna abrogated effects mers cov glycoprotein irak ppar gamma confirming immunosuppressive effects mediated dpp receptor effect observed thp macrophages human primary peripheral blood monocytes findings support dpp mediated suppressive action mers cov macrophages suggest potential target effective elimination pathogenicity
two major endoglucanase genes celb cela cloned penicillium decumbens using method modified thermal asymmetric interlaced polymerase chain reaction tail pcr result southern blotting suggested decumbens single copy cela gene single copy celb gene chromosomal dna expression levels cela celb determined means real time quantitative pcr suggesting two genes coordinately expressed repressed glucose induced cellulose endoglucanase genes expressed saccharomyces cerevisiae recombinant proteins purified recombinant celb cela optimally active degrees recombinant celb showed fold fold fold higher enzyme activities toward carboxymethyl cellulose barley glucan pasc respectively comparison cela however activities toward pnpc avicel showed minor differences results suggested celb strict endoglucanase whereas cela showed processivity relative higher ability hydrolyze crystal cellulose
recent years increasing concern public health threat presented introduction petroleum hydrocarbon pollutants environment due anthropogenic activities greater extent natural processes extent many countries world currently facing severe problem due pollutants one persistent organic pollutants pops remediation polluted sites biodegradation viable option conventional physico chemical methods remediation seems technically well economically challenging biodegradation non invasive could cost effective removal petroleum hydrocarbon pollutants considered ultimate mechanism pollutants removal immobilized microbial cells give advantage free microbial cells improve survival retention bioremediation agents polluted sites however current biodegradation approaches suffer number limitations include pollutant characteristics poor capabilities microbial communities field lesser bioavailability pollutants growth conditions etc understanding factors affecting microbial degradation great research interest present scenario review selectively examines provides critical view bioavailability substrates microorganisms petroleum hydrocarbon pollutants degradation molecular techniques characterization degradation mechanisms aerobic anaerobic conditions commercially available bioremediation agents factors affecting biodegradation pollutants role genetically modified organisms biodegradation petroleum hydrocarbon pollutants immobilized also discussed elsevier ltd rights reserved
backgroundretinoblastoma common malignant cancer eye children although metastatic retinoblastoma rare cure rates advanced disease remain high level polo like kinase expression retinoblastomas previously shown correlated adverse outcome parameters polo like kinase serine threonine kinase involved cell cycle regulation transition polo like kinase inhibition demonstrated anti tumour effects preclinical models several paediatric tumours assessed efficacy retinoblastoma cell lines methodsexpression polo like kinase determined panel retinoblastoma cell lines polymerase chain reaction western blot analysis analysed viability dimethylthiazol diphenyltetrazolium bromide mtt assay proliferation bromo deoxyuridine enzyme linked immunosorbent assay cell cycle progression propidium iodid staining apoptosis cell death enzyme linked immunosorbent assay three retinoblastoma cell lines treatment two adenosine triphosphate competitive polo like kinase inhibitors gsk activation polo like kinase downstream signalling components including assessed resultstreatment retinoblastoma cells either gsk reduced cell viability proliferative capacity induced cell cycle arrest apoptosis polo like kinase inhibition also induced signalling pathway analysis key players cell cycle control revealed low nanomolar concentrations either polo like kinase inhibitor upregulated cyclin increased activated cyclin dependent kinase phosphorylated retinoblastoma cell lines conclusionsthese preclinical data indicate polo like kinase inhibitors could useful components rationally designed chemotherapy protocols treat patients metastasized retinoblastoma early phase clinical trials
anthocyanidin synthase ans oxoglutarate iron dependent oxygenase catalyzes penultimate step biosynthesis anthocyanin reaction responsible formation colored anthocyanidins colorless leucoanthocyanidins full length cdna isolated purple fleshed sweet potato ipomoea batatas lam yamakawamurasaki designated ibans containing open reading frame encoding amino acid polypeptide multiple alignments revealed deduced ibans protein high identity ans proteins plants ipomoea nil identities ipomoea purpurea identities brassica juncea identities structural analysis showed ibans protein might belong dependent oxygenase containing three binding sites three binding sites phylogenetic tree analysis revealed ibans shared close relationships nil purpurea southern blotting showed two copies ibans gene genome real time quantitative polymerase chain reaction revealed expression ibans gene highest storage roots lowest leaves ibans expressed abundantly formation storage roots five cultivars sweet potato ibans expression strongly associated anthocyanin accumulation suggesting ans gene expression associated activation anthocyanin biosynthesis
baffled reactor repeated coupling aerobic anaerobic conditions rcaa constructed mechanism site sludge reduction analyzed systematically long term operation years chemical oxygen demand cod removal efficiency reached average sludge yield rcaa system suspended sludge cod approximately conventional activated sludge process influent cod hydraulic retention time hrt analysis soluble components sludge characteristics microorganism community metabolic activities rcaa system showed sludge aerobic zone flowed anaerobic zone sludge destruction degradation occurred intracellular organic substances released hydrolyzed small molecular compounds intermediate substances degraded subsequent aerobic compartments way cryptic growth sludge realized could contribute sludge reduction microbial ecological analysis denaturing gradient gel electrophoresis dgge showed rcaa process spatially domesticated different microbial communities along flow direction bioreactor enhanced excess sludge lysis transformation cryptic growth bacterial predation elsevier rights reserved
translocation renal cell carcinomas rcc characterized several different translocations involving tfe gene tumors different specific gene fusions may different clinicopathologic manifestations rbmtfe rccs reported date added cases rare type tumors clinicopathologic immunohistochemical molecular ultrastructural analyses tumors similar patterns mixed architectures follows acinar tubular papillary patterns epithelioid cells combined sheets small cells pseudorosettelike architectures mimicking typical morphology rcc cytoplasmic vacuolization nuclear groove psammoma bodies observed cases immunohistochemically cases demonstrated moderate strong immunoreactivity tfe cathepsin ksp cadherin cadherin rcc marker pax vimentin whereas negativity tfeb hmb ckpan melan least focally expressed antibody showed labeling mean tumor cell nuclei interest several immunostainings demonstrated expression discrepancy different histology patterns rbm tfe fusion transcripts identified cases reverse transcription polymerase chain reaction fluorescence situ hybridization cases showed unusual split signals distance signal diameter localized subtle split signals usually false negative results also observed ultrastructures including melanin pigment nuclear groove numerous glycogens mitochondrion areas high electron density material basement membrane material cell junctions poor development patients alive evidence recurrent disease report adds known data regarding rbm tfe rcc
conventional dimensional cell culture invaluable tool amongst others cell biology experimental pharmacology however cells cultured top stiff plastic plates lose phenotypical characteristics fail recreating physiological environment found vivo fundamental requirement goal study get rigorous predictive response human drug action safety recent approaches field renal cell biology focused generation cell culture models due bona fide features exhibit fact closely related observed physiological conditions better predict vivo drug handling review describe currently available vitro models kidney future directions studying renal drug handling disease modeling kidney regeneration elsevier rights reserved
purpose aim present study mimic hierarchical structure bone tissues simple sandblasting acid etching anodization investigate effects surface characteristics proliferation differentiation osteoblasts high glucose concentrations way effects high glucose levels osteoblast functions tested methods mct cells cultured sand blasted acid etched sla surface nano modified sla nmsla surface subjected normal serum diabetic serum respectively surface characteristics evaluated scanning electron microscopy cell proliferation assessed using mtt assay levels alkaline phosphatase alp activity mineralization measured compared real time polymerase chain reaction applied detect expression levels osteogenic genes results nmsla significantly increased cell proliferation time points ranging days serums cells cultured nmsla surfaces displayed significantly higher alp activities mineralization expression levels runx indicates runt related protein collagen col osteocalcin ocn notably increased nmsla surface compared sla surface moreover found high glucose increased osteoblast proliferation decreased differentiation osteoblast slightly conclusion hierarchical micro nano structured titanium surface favorable biocompatibility simultaneously improving osteoblast proliferation differentiation diabetic serum
atrazine atz metabolism human liver microsomes hlm cytochrome cyp isoforms human liver fractions investigated using hplc pda cyp dependent metabolites pooled hlm desethylatrazine dea desisopropylatrazine dia hydroxyisopropylatrazine hiatz hydroxyethyl atrazine heatz dea dia major metabolites pooled hlm cypa respectively major isoforms dea dia production cypa less active generally high concentrations produces dea dia significant percent total normalized rates tnr cypa pooled hlm dea dia production single donor hlm samples showed correlations cypa dea dia production variations production dea dia fold respectively pooled fractions also mediate glutathione conjugation atrazine dea dia elsevier inc rights reserved
feeding trial conducted investigate effects different levels dietary lactobacillus plantarum hemato immunological parameters resistance streptococcus iniae infection juvenile siberian sturgeon acipenser baerii fish fed three experimental diets prepared supplementing basal diet plantarum different concentrations colony forming units cfu control non supplemented basal diet weeks innate immune responses immunoglobulin alternative complement activity ach lysozyme activity significantly higher fish fed cfu plantarum diet compared groups furthermore fish fed various levels plantarum significantly showed higher red blood cell rbc hemoglobin white blood cell wbc monocyte compared control group end feeding experiment fish challenged iniae quantify level disease resistance mortality iniae challenge decreased fish fed probiotic results indicated dietary supplementation plantarum improved immune response disease resistance siberian sturgeon juvenile
zinc finger domain containing stress associated proteins sap involved diverse stress response pathways plants present study novel banana sap gene musasap identified banana est database subsequently characterized overexpression transgenic banana plants expression profiling native banana plants showed musasap regulated drought salt cold heat oxidative stress well treatment abscisic acid cellular localization assay carried making musasap gfp fusion protein indicated musasap incompletely translocated nucleus copy number analysis performed using real time pcr southern blotting indicated musasap occurs banana genome single copy per chromosome set transgenic banana plants constitutively overexpressing musasap displayed better stress endurance characteristics compared controls vitro vivo assays lesser membrane damage indicated reduced malondialdehyde levels transgenic leaves subjected drought salt oxidative stress pointed towards significant role musasap stress amelioration pathways banana strong regulation polyphenol oxidase ppo coding transcript musasap overexpressing plants together induction musasap wounding methyl jasmonate treatment indicated possible involvement musasap biotic stress responses ppos perform major functions multiple defense pathways
objective investigate effect cordyceps sinensis expression uncoupling protein ucp elucidate role ucp development nonalcoholic fatty liver diseases nafld methods rats administrated high fat diet produce nafld animal model intervened cordyceps sinensis triglyceride total cholesterol liver measured biochemistry adenosine triphosphate atp luciferin luciferinase ucp expression northern blotting immunohistochemistry liver histopathology evaluated results high fat diet fed rats developed obesity showed gradual increase body weight liver index decrease atp level advanced liver disease found histopathologically longer high fat diet regulation liver ucp high fat diet stopped week however codyceps sinensis induced ucp regulation continuously kept liver atp relatively high level conclusion nafld rat models produced successfully liver ucp regulation nafld rats may definite beneficial adaptation lipid exposure cordyceps sinensis may serve protective role prevent nafld progression one possible mechanisms involves modulating ucp expression thereby regulating fat metabolism energy homeostasis
composition exhaled breath contains important information regarding health body measurements level exhaled carbon dioxide help diagnose respiratory diseases determine metabolic rate low cost ndir sensor developed offers detection ppm range level human breath innovative lock amplifier system allows drive signal recovered high frequency noise associated silicon thermopile infra red detector laboratory experiments demonstrated excellent stability repeatability dry humid conditions humidity increase response time typically limited low drive frequency necessary mems based wideband infra red source current system resolution ppm refinement signal processing higher drive frequency permit even lower concentrations detected ultimate target ppm existing performance shown suitable breath analysis using side stream analyser authors published elsevier ltd
aims ligands vitamin receptor vdr regulate apolipoprotein apo gene expression tissue specific manner vitamin metabolite dihydroxycholecalciferol shown possess unique biological effects determine modulates apo gene expression hepg hepatocytes caco intestinal cells treated precursor ohd main methods apo protein levels mrna levels measured western northern blotting respectively changes apo promoter activity measured using chlorampenicol acetytransferase assay key findings treatment ohd inhibited apo secretion hepg caco cells apo mrna levels apo promoter activity hepg cells determine represses apo gene expression site nuclear receptor binding element essential vdrs effects apo gene expression hepg cells transfected plasmids containing lacking site site containing plasmid suppressed plasmid lacking site likewise treatment suppressed reporter gene expression cells transfected plasmid containing site front heterologous promoter finally antisense mediated vdr depletion failed reverse silencing effects apo expression significance results suggest vitamin metabolite endogenous regulator apo synthesis vdr independent signaling mechanism elsevier inc rights reserved
resistance broad spectrum cephalosporins bscs enterobacteriaceae companion animals become great concern public health estimate dissemination bsc resistant bacteria dog human examined bsc resistance determinants genetic similarities bsc resistant escherichia coli isolates derived canine rectal swabs human clinical samples coli isolates possessed bla tem canine human isolates bla ctx human isolates bla ctx canine human isolates bla ctx canine human isolates bla cmy canine human isolates possession ctx type beta lactamases significantly frequent human isolates whereas cmy common canine isolates bacterial typing methods phylogenetic typing antigen serotyping pulsed field gel electrophoresis showed little clonal relationship canine isolates human isolates plasmid analysis southern blotting indicated plasmids encoding cmy similar among canine human isolates based differences major beta lactamase divergence bacterial types canine human isolates seems clonal dissemination bsc resistant coli canines humans limited similarity cmy encoding plasmid suggests plasmid mediated beta lactamase gene transmission plays role interspecies diffusion bsc resistant coli dog human japanese society chemotherapy japanese association infectious diseases published elsevier ltd rights reserved
capripoxviruses capvs consisting sheeppox virus spv goatpox virus gpv lumpy skin disease virus lsdv species cause economically significant diseases sheep goats cattle respectively quantitative real time polymerase chain reaction qpcr assays routinely used rapid detection capvs surveillance outbreak management programs modified optimized previously published capv qpcr assays referred balinsky bowden assays changing commercial pcr reagents used tests modified assays displayed analytical specificity showed apparent changes analytical sensitivities detection capvs compared original assays diagnostic sensitivities assessed using clinical reference samples experimentally infected sheep goats cattle improved modified balinsky assay modified bowden assay modified qpcr assays multiplexed detection beta actin indicator potential false negative results multiplex modified qpcr assays exhibited diagnostic sensitivities singleplex assays suggesting utility detection capvs
clustered regularly interspaced short palindromic repeats crispr crispr associated protein cas system provides technological breakthrough mutant generation several methods polymerase chain reaction pcr restriction enzyme assay endonuclease tei assay surveyor nuclease assay page based genotyping assay high resolution melting hrm analysis based assay developed screening crispr cas induced mutants however methods time labour intensive may also sequence limited require expensive equipment described cost effective sensitive screening technique based conventional pcr annealing critical temperature pcr act pcr identifying mutants act pcr requires single pcr step followed agarose gel electrophoresis demonstrated act pcr accurately distinguished crispr cas induced mutants wild type rice zebrafish moreover method adapted accurately determining mutation frequency cultured cells simplicity act pcr makes particularly suitable rapid large scale screening crispr cas induced mutants plants animals copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
objective genetic surroundings blactx escherichia coli recovered faeces travellers returning overseas compared among established strains provide insights spread bla ctx methods august january faecal specimens collected north west london nhs trust general practice patients clinical history diarrhoea following recent international travel cefuroxime resistant coli isolated cystine lactose electrolyte deficient agar produced extended spectrum beta lactamases esbls identified double disc synergy test ddst molecular environments surrounding bla ctx investigated pcr dna sequencing gene cloning northern blotting results coli isolated returning travellers gave positive ddst confirmed pcr produce ctx esbls blactx including belonging clone among isolates environment upstream blactx consisted either intact isecp various lengths truncated isecp iii remnant isecp two different promoters found transcribe bla ctx resulting different levels cephalosporin resistance conclusion coli ctx esbl returning travellers harboured previously seen bla ctx genetic environments intact remnant isecp well bla ctx genetic environments previously unseen various lengths truncated isecp suggest overseas acquisition highlight difficulty control time population mobility travel
immigration latin american women childbearing age spread congenital transmission chagas disease areas nonendemicity disease worldwide problem european health authorities implemented screening programs prevent vertical transmission lack uniform protocol calls urgent establishment new strategy common laboratories aims analyze trend passive igg antibodies newborn means five serological tests diagnosis follow congenital trypanosoma cruzi infection assess utility techniques diagnosing congenital transmission iii propose strategy prompt efficient cost effective diagnosis cruzi infection noninfected newborns continuous decreasing trend passive igg antibodies observed none serological assays seroreverted infants months months onwards serological tests achieved negative results samples analyzed exception highly sensitive chemiluminescent microparticle immunoassay cmia contrast congenitally infected infants antibody decline detected treatment initiation order improve diagnosis congenital cruzi infection propose new strategy involving fewer tests allows significant cost savings protocol could start month birth parasitological test pcr negative serological test would carried months positive would followed another around months confirmation
mesenchymal cells intestine comprise variety cell types diverse origins functions molecular markers provide mechanical structural support important functions intestinal organogenesis morphogenesis homeostasis recent studies human transcriptome revealed importance development colorectal cancer studies animal models provided evidence roles pathogenesis colitis associated cancer sporadic colorectal cancer mesenchymal cells tumors called cancer associated fibroblasts arise via activation resident mesenchymal cell populations recruitment bone marrow derived mesenchymal stem cells fibrocytes cancer associated fibroblasts variety activities promote colon tumor development progression include regulation intestinal inflammation epithelial proliferation stem cell maintenance angiogenesis extracellular matrix remodeling metastasis review intestinal mesenchymal cell specific pathways regulate processes focus roles mediating interactions inflammation carcinogenesis also discuss increasing understanding intestinal mesenchymal cell biology function could lead new strategies identify treat colitis associated cancers
myotonic dystrophy multisystemic neuromuscular disorder caused dynamic mutation ctg trinucleotide repeats untranslated region myotonic dystrophy protein kinase gene dmpk aim present study establish use polymerase chain reaction pcr based simple rapid method initial sample screening minority samples tested positive method need detected tri primer pcr southern blotting time consuming involves use radioactive material study concerned patients nine families clinical diagnosis dna extracted blood used amplification triplet repeat sequences dmpk loci obtained two bands normal subjects one band patients corresponding normal dmpk allele confirmed pcr southern blot rapid test initial screening samples presence dmpk mutations economical reliable method method reduces number samples needing pcr southern blotting
number outstanding descriptions techniques linked peptide chain assembly already published atherton sheppard solid phase peptide synthesis practical approach stewart young solid phase peptide synthesis wellings atherton methods enzymology processes also described operator manuals supplied manufacturers peptide synthesis instrumentation accordingly protocols presented chapter provide information topics covered publications
practice regulatory science drug development described course material education pharmaceutical sciences drafted division pharmaceutical society japan pharmaceuticals defined science predicting assessing judging quality efficacy safety pharmaceutical products throughout lifespan also described integrated science based basic applied biomedical sciences including analytical chemistry biochemistry pharmacology toxicology genetics biostatistics epidemiology clinical trial methodology social sciences decision science risk assessment communication science involvement drug development generally starts optimization lead compounds plays important roles governing pharmaceuticals entire life cycle management phase well drug development phase
emerging evidence indicates accumulation advanced glycation end products ages human tissues may contribute cell injury inflammation apoptosis induction endoplasmic reticulum stress human metabolism relies homeostasis coordinated response metabolic organs controlling synthesis catabolism various nutrients vitro studies demonstrated age induced enhancement unfolded protein response upr different cell types including endothelial neuronal pancreatic cells podocytes suggesting crosstalk underlying pathological mechanism contributes metabolic diseases minireview describe vivo studies undertaken group others demonstrate diverse systemic effects ages stress induction major metabolic tissues brain kidney liver pancreas normal mice administration high ages content diet normal mice period weeks upergulates mrna protein levels chaperone bip grp indicative upr initiation major metabolic organs induces activation pivotal transcription factor xbp regulates glucose lipid metabolism furthermore animals genetic ablation upr activated transcription factor ebp homologous protein chop allocated high ages diet exhibited relative resistance upr induction bip levels xbp activation major metabolic organs since chop presents critical mediator links accumulation aggregation unfolded proteins induction oxidative stress stress related apoptosis revealed important molecular target management metabolic diseases
purpose review atp citrate lyase acly emerged drug target ldl cholesterol ldl lowering review acly therapeutic strategy genetics molecular cellular biology also inhibition recent findings acly critical enzyme linking glucose catabolism lipogenesis providing acetyl coa mitochondrial citrate fatty acid cholesterol biosynthesis human genetic variants associated enhanced growth survival several cancers attenuated plasma triglyceride responses dietary fish oil mice liver specific acly deficiency protects hepatic steatosis dyslipidemia whereas adipose tissue specific acly deletion phenotype supporting therapeutic inhibition acly lipid regulating compound bempedoic acid discovered potently inhibit acly animal models prevents dyslipidemia attenuates atherosclerosis phase clinical trials revealed bempedoic acid effectively lowers ldl monotherapy combined ezetimibe added statin therapy statin intolerant hypercholesterolemic patients summary efficacy bempedoic acid ldl lowering agent validated acly inhibition therapeutic strategy positive results phase patient studies together long term cardiovascular disease outcome trials required establish acly major new target cardiovascular medicine
proteins interact establish identities cell affinities interactions span ten orders magnitude values regimen considered transient important cell signaling solution nmr including diamagnetic paramagnetic techniques enabled atomic resolution depictions transient protein protein interactions diamagnetic nmr allows characterization protein complexes values several whereas ultraweak fleeting complexes modeled use paramagnetic nmr especially paramagnetic relaxation enhancement pre tackling ever larger protein complexes pre particularly useful providing long range intermolecular distance restraints nmr measurements averaged ensemble complex structures structural information dynamic protein protein interactions besides stereospecific one often extracted herein protein interaction dynamics exemplified encounter complexes alternative binding modes coupled binding folding intrinsically disordered proteins integration nmr biophysical techniques allow better visualization transient protein protein interactions particular single molecule data may facilitate interpretation ensemble averaged nmr data though structures proteins protein complexes found cell diluted solution anticipate dynamics transient protein protein protein interactions different awaits awaits exploration nmr article part special issue entitled physiological enzymology protein functions elsevier rights reserved
elevational shift scenario proposed model explain response cold adapted organisms quaternary climatic fluctuations europe north america however elevational shift model well explored eastern asia topographically complex northern hemisphere biogeographic regions evaluated role elevational shift closely related firs abies mill subtropical temperate china firs typical alpine trees sensitivity climate change tested elevational shift hypothesis firs china using phylogeographic methods ecological niche models phylogeographic analyses comprised mitochondrial chloroplast polymorphisms surveyed across individuals populations representing species mitotypes chlorotypes inferred ancestral haplotype widest distribution results phylogeographic survey revealed multiple centers genetic diversity distinct geographic regions latitudinal trend moreover results showed range expansions seven taxa last glacial kya consistent quaternary fossil record abies china taken together findings support historical biogeographic pattern firs glacial expansions probably corridors lower elevation interglacial fragmentations isolation higher elevation peaks therefore abies china probably undergoes elevational shift response climate change facing forecasting global warming risk several critically endangered firs enhanced species would little escape space situ higher altitudes according enms proposed situ conservation strategy southern hengduan mountains region south western china
detected unexpected small sized dna fragment polymerase chain reaction pcr analysis heterogeneity macronuclear intergenic region paramecium caudatum southern blotting total genomic dna pcr product probe indicated small sized dna fragment constituted part macronuclear genome sequencing revealed pcr product chimeric dna structure may generated tail tail fusion region hemoglobin gene nucleosome assembly protein nap gene short tandem repeats consisting tetra tri nucleotides exist putative cleavage sites nap genes respectively feature differs found boundaries internal eliminated sequences aurelia complex transposable elements species suggests chimeric dna generated novel mechanism although chimeric dna contains nap promoters transcripts corresponding chimeric dna detected reverse transcription pcr analysis vegetative cell growth possible roles chimeric dna discussed
chronic inflammation tumor microenvironment evasion antitumor effector immune response two emerging hallmarks required oncogenesis cancer progression innate immune system plays critical role perpetuating tumor promoting hallmarks also developing antitumor adaptive immune responses thus understanding dual role innate system cancer immunology required design combined immunotherapy strategies able tackle established tumors review recent advances understanding role cell populations soluble components innate immune system cancer focus complement adapter molecule stimulator interferon genes natural killer cells myeloid cells cells
representative stoichiometric model essential perform metabolic flux analysis mfa using experimentally measured consumption production rates constraints human embryonic kidney hek cell culture opportunity use extremely well curated annotated human genome scale model recon mfa performing mfa using recon without modification would implied cells access functionality encoded genome realistic majority intracellular fluxes poorly determined extracellular exchange rates measured compounded fact suitable metabolic objective function suppress non specific fluxes devised heuristic systematically reduce recon emphasize flux core metabolic reactions implies cells would engage dominant metabolic pathways grow significant changes gross metabolic phenotypes would invoked changes pathways reduced metabolic model becomes functionalized version recon used identifying significant metabolic changes cells flux analysis elsevier rights reserved
inhibition hsp function essential therapeutic approach several inhibitors designed anti cancer agents inhibitors atpases aim deregulate hsp folding function atpase proteins common human metabolism form nonspecific targets hsp functions dimer coordinating chaperones heat shock organizing protein hop forms bridge hsp hsp hsp complex form hsp hsp coordination perturbing conformational changes hsp proteins dimer formation protein protein interactions inhibit hsp substrate protein folding function approach target atpase proteins targets hsp function solely purpose designed compounds block hsp function moreover molecular docking studies well competition analysis compounds performed hsp novel thiazolyl coumarine compounds determined valuable terminal hsp inhibitors provide promising templates drug design anticancer activities novel compounds tested employing human colon dld liver cancer hepg cell lines thiazolyl coumarine compounds found significant useful treatment human colon liver cancer evidenced vitro silico results
effective sensitive methods molecular detection echinococcus multilocularis faecal samples final hosts crucial prevention control human alveolar echinococcosis studies epidemiology parasite little known suitability commercial test kits isolating dna multilocularis fox faeces performance standard polymerase chain reaction pcr protocols relation quality dna extracted kits compared four different kits faecal dna miniprep zymo research fastdna spin kit soil biomedicals qiaamp fast dna stool mini kit qiagen nucleospin soil kit macherey nagel extraction dna multilocularis eggs present faeces foxes negative faecal samples spiked multilocularis eggs egg concentration tested times dna extraction kits extracted dna sample amplified using three pcr protocols conventional pcr cpcr platinum taq invitrogen qpcr supermix bio rad iii qpcr quantitect multiplex master mix qiagen highest analytical sensitivities molecular detection multilocularis eggs spiked fox faeces observed combining either qiaamp fast dna stool mini kit faecal dna miniprep kit qpcr using quantitect multiplex master mix sensitivities respectively combinations including remaining test kits nucleospin soil kit fastdna spin kit soil showed markedly lower analytical sensitivity pcr examinations results present study indicate utmost importance select suitable dna extraction kits combination robust pcr methods reagents achieve acceptable analytical sensitivity molecular detection multilocularis eggs fox faecal samples elsevier rights reserved
type diabetes mellitus characterized shorter leukocyte telomere length relationship leukocyte telomere length type diabetes mellitus development rather questioned fasting post load glycaemia associated different types insulin resistance relation leukocyte telomere length remains unknown compared leukocyte telomere length fasting post load glucose levels persons receive glucose lowering treatment randomly selected rural residents ukraine aged previously diagnosed type diabetes mellitus oral glucose tolerance test anthropometric measurements performed leukocyte telomere length measured standardized method quantitative monochrome multiplex polymerase chain reaction real time spearman pearson rank correlation used correlation analysis fasting plasma glucose post load plasma glucose levels leukocyte telomere length logistical regression models used evaluate risks finding short long telomeres associated fasting plasma glucose post load plasma glucose levels association fasting plasma glucose leukocyte telomere length revealed whereas post load plasma glucose levels demonstrated negative correlation leukocyte telomere length waist circumference systolic blood pressure negatively related leukocyte telomere length men oral glucose tolerance test result based glycemic categories show differences mean leukocyte telomere length categories normal fasting plasma glucose post load plasma glucose ngt diabetes mellitus impaired fasting glucose tolerance ifg igt levels correlation relationship leukocyte telomere length post load plasma glucose level ngt ifg igt groups respectively revealed association leukocyte telomere length fasting plasma glucose confirmed group increase post load plasma glucose fasting plasma glucose level improves chances revealing short telomeres adjustment age gender waist circumference systolic blood pressure fasting plasma glucose phenomena remain significant conclude post load plasma glucose fasting plasma glucose inversely associated leukocyte telomere length impact statement contradictory epidemiologic data obtained link leucocyte telomere length ltl diabetes type diabetes likely pathophysiologically heterogeneous comparison association ltl separately fasting plasma glucose fpg post load plasma glucose hpg levels done thus study ltl changes associated different types hyperglycaemia largely determine heterogenity important population based study rural ukrainians first demonstrate increase hpg fpg level increases chances revealing short telomeres obtained data help clarify relationship ltl shortening different conditions insulin resistance mainly liver resistance high fpg mostly muscle adipose tissue resistance high hpg
molecular pathological epidemiology mpe integrative field utilizes molecular pathology incorporate interpersonal heterogeneity disease process epidemiology individual development progression disease determined unique combination exogenous endogenous factors resulting different molecular pathological subtypes disease based unique disease principle primary aim mpe uncover interactive relationship specific environmental exposure disease subtypes determining disease incidence mortality mpe approach provide etiologic pathogenic insights potentially contributing precision medicine personalized prevention treatment although breast prostate lung colorectal cancers among commonly studied diseases mpe approach used study disease addition molecular features host immune status microbiome profile likely affect disease process thus serve informative biomarkers integration several disciplines mpe achieved pharmaco mpe immuno mpe microbial mpe provide novel insights underlying etiologic mechanisms advent high throughput sequencing technologies available genomic epigenomic data expanded dramatically mpe approach also provide specific risk estimate disease subgroup thereby enhancing impact genome wide association studies public health article present recent progress mpe discuss importance accounting disease heterogeneity era big data health science precision medicine
ggggcc repeat expansion corf common cause familial amyotrophic lateral sclerosis als frontotemporal lobar dementia ftld als ftld well contributing sporadic forms diseases screening large cohorts als ftld cohorts identified corf als represented throughout clinical spectrum als phenotypes though comparison genetic subtypes corf carriers higher incidence bulbar onset disease contrast corf ftld predominantly associated behavioural variant ftd often presents psychosis commonly form hallucinations delusions however corf expansions restricted clinical phenotypes higher expected incidence parkinsonism als patients corf expansions repeat also reported motor phenotypes primary lateral sclerosis progressive muscular atrophy corticobasal syndrome huntington like disorders addition expansion identified non motor phenotypes including alzheimer disease lewy body dementia currently understood basis clinical variation seen repeat expansion one potential explanation repeat length sizing expansion southern blotting established somatic heterogeneity different expansion lengths different tissues even within brain date correlation expansion size clinical phenotype established als whilst ftld repeat size cerebellum found correlate disease duration somatic heterogeneity suggests degree instability within repeat evidence anticipation reported reducing age onset subsequent generations variability instability expansion length along interactions environmental genetic modifiers tmemb may basis differing clinical phenotypes arising mutation
obesity continues major global problem various cancers related obesity proper understanding aetiology especially molecular tumour biology important early diagnosis better treatment genes play important role development obesity genes leptin leptin receptor encoded diabetes pro opiomelanocortin agrp npy melanocortin receptors insulin induced gene linked obesity micrornas control gene expression via mrna degradation protein translation inhibition influence cell differentiation cell growth cell death overexpression mir inhibits tumour growth suppressing cell lymphoma extracellular signal regulated kinase activities kras oncogene cancers breast uterus renal thyroid liver also related obesity disturbance production sex hormones insulin leads distortion balance cell proliferation differentiation apoptosis possible mechanism linking obesity cancer involves alteration level adipokines sex hormones mediators act biomarkers cancer progression act targets cancer therapy prevention interestingly many anti cancerous drugs also beneficial treating obesity vice versa also reviewed possible link mechanism drugs act cancer obesity present review may important molecular biologists oncologists clinicians treating cancers also pave way better therapeutic options
article features authentic research lab experience developed use freshman level general biology course nonmajors two year college students work groups select investigate factors affecting microalgal cell growth relate findings real life application social significance lab experience designed using four step pedagogical framework originally developed four year university sophomore level molecular cell biology course creators pedagogical framework four year university mentored instructor two year college process using pedagogical framework design implement authentic research lab experience described article example shows adaptation successful pedagogical models particularly within mentoring partnerships greatly increase implementation authentic research experiences biology lab courses varying levels study
nifu like gene exhibiting similarity nifu nitrogen fixation gene cluster identified first time gut cdna library amphioxus branchiostoma belcheri pcr northern blotting well situ hybridization histochemistry verified cdna represents amphioxus nifu like gene rather microbial contaminant nifulike gene encodes protein amino acid residues including highly conserved type motif shares identity nifu like proteins variety species including vertebrates invertebrates microbes expressed tissue specific manner digestive system including epipharyngeal groove endostyle hepatic caecum hindgut gill ovary testis taken together highly likely nifu like protein plays tissue dependent critical role amphioxus
zinc ubiquitous trace elements involved human metabolism participates major biochemical pathways plays multiple roles perpetuation genetic material including transcription dna translation rna ultimately cellular division analysed cases pregnant women first third trimester pregnancy including high risk pregnant women normal pregnant women latter one served control group could verify accuracy results serum blood zinc measured directly using atomic absorption spectrometry time using total fluorescence patients resulting zinc values lower marked zinc deficient pregnant women whereas zinc values higher dwere marked normal pregnant women statistical evaluation showed significant change two methods serum zinc determination without adequate nutritional request person may fall zinc deficiency condition
mice homozygous defect ptcd pentatricopeptide repeat domain protein gene generated order study role protein mitochondrial rna metabolism mice displayed specific variable reduction ubiquinol cytochronic reductase complex activity mitochondria heart liver skeletal muscle due decrease expression mitochondrial dna encoded cytochrome catalytic core complex reduction mitochondrial function profound effect myocardium replacement ventricular cardiomyocytes fibro fatty tissue northern blotting showed reduction mrna mitochondrial dna encoded proteins cytochrome cytb nadh dehydrogenase subunit elevation combined pre processed cytb transcript suggests ptcd protein involved processing rna transcripts involving cytochrome derived mitochondrial dna defines site ptcd action mammalian mitochondria suggests possible role dysfunction protein actiology heart failure
objective project determine factors associated differences butadiene inhalation uptake rate metabolism bid epoxy butene monitoring exhaled breath brief exposure bid human volunteers total subjects equal males females four racial groups provided final data volunteers gave informed consent completed questionnaire including diet alcohol use venous blood sample collected genotyping cype subjects received min exposure ppm bid followed min washout period total administered dose ppm range everyday exposures ten min exhaled breath samples five five exposure collected using optimized strategy determined fid analysis breathing activity minute ventilation breath frequency tidal volume measured estimate alveolar ventilation washout period chlorzoxazone administered urine samples collected measure phenotype total bid uptake exposure inhaled bid minus exhaled estimated three compartment pbpk model fitted subject breath measurements estimate personal population model parameters including vivo metabolic rate hierarchical bayesian pbpk model fit monte carlo simulations estimate model parameters regression anova analyses performed earlier data analysis showed wide ranges total uptake metabolic rate varied significantly sex age showed suggestive differences race asians highest rates analyses reported found correlation total bid uptake metabolic rate significant differences found oxidation rates genotype phenotype rates showed trends consistent reported differences genotype phenotype chlorzoxazone metabolism effects metabolic rate observed long term alcohol consumption consumption past overall neither dietary factors genetic differences explained much wide variability metabolic rates population characteristics age sex race important explanatory variables large fraction total variability metabolism remains explained elsevier science ireland ltd rights reserved
replacing mouse cypa human cypa enables humanized cypa mice mimic human metabolism dietary carcinogen amino methyl phenylimidazo pyridine phip hydroxylation proximate carcinogen previous study demonstrated phip combined dextrin sulfate sodium dss induced colitis induces colon carcinogenesis hcypa mice employed whole exome sequencing found multiple gene mutations phip dss induced colon tumors mutations exon ctnnb catenin however predominant events sequenced key fragments apc ctnnb kras mutations genes humans commonly found drivers colorectal cancer mutations either codon exon ctnnb found tumors mutation found either apc kras sequence context codons suggests phip targets tgga motif ctnnb since mutations activate wnt signal major driving force human colorectal cancers conclude mutated catenin driver phip dss induced colon carcinogenesis result suggests colon tumors hcypa mice mimic human colorectal carcinogenesis dietary etiology involving phip also aberrant activation wnt signaling pathway driving force wiley periodicals inc
background performance plasmodium falciparum specific histidine rich protein based rapid diagnostic tests rdts evaluate suspected malaria low endemicity settings well characterized methods using dried blood spot samples patients suspected malaria health facilities low endemicity country swaziland investigated diagnostic accuracy histidine rich protein based rdts using qualitative polymerase chain reaction pcr nested pcr targeting cytochrome gene quantitative pcr reference standards explore reasons false negative false positive results used pfhrp specific pcr logistic regression analyses potentially associated epidemiological factors results patients rdt positive rdt negative samples available selected testing compared nested pcr sensitivity specificity positive predictive value ppv negative predictive value npv rdts respectively exclusion samples parasite densities accounted false negative results pcr detectable infections sensitivity specificity ppv npv deletions pfhrp detected false positivity likely second year associated demographics recent malaria health facility testing characteristics potential dna degradation conclusions low transmission setting swaziland demonstrated low sensitivity rdt malaria diagnosis owing unexpectedly high proportion low density infection among symptomatic subjects ppv also low requiring investigation accurate point care diagnostic may needed support malaria elimination efforts
host parasitoid systems characterized continuous development new defence strategies hosts counter defence mechanisms parasitoids evolutionary arms race makes host parasitoid systems excellent understanding trade offs host use caused evolutionary changes host immune responses parasitoid virulence however knowledge obtained natural host parasitoid systems trade offs still limited study aim examine trade offs parasitoid virulence asecodes parviclava hymenoptera eulophidae attacking three closely related beetles galerucella pusilla galerucella calmariensis galerucella tenella coleoptera chrysomelidae second aim examine whether geographic variation parasitoid infectivity host immune response could explain differences parasitism rate northern southern sites specifically wanted examine whether capacity infect host larvae differed depending previous host species parasitoids differences connected differences induction host immune systems achieved combining controlled parasitism experiments cytological studies infected larvae results reveal parasitism success parviclava differs depending previous current host species higher virulence attacking larvae species previous host virulence general high parasitoids pusilla low parasitoids calmariensis time pusilla larvae strongest immune response calmariensis weakest observations linked changes larval hemocyte composition showing changes cell types important encapsulation process individuals infected less virulent parasitoids findings suggest ongoing evolution parasitoid virulence host immune response making system strong candidate studies host race formation speciation
thyroid cancer common skull ectopic thyroid cancer reported years literatures foreign countries four cases skull ectopic thyroid cancer reported years domestic literature including cases report paper aims investigate clinical characteristics possible molecular mechanisms rare disease five keywords thyroid gland ectopic thyroid thyroid cancer ectopic thyroid cancer metastatic thyroid cancer included years literatures pubmed medline wanfang database reviewed combining test data cases surgical patient tissue microarray specimens molecular immunology pathology possible molecular mechanisms analyzed molecular regulation network diagram drawn skull ectopic thyroid cancer reported years literatures foreign countries four cases skull ectopic thyroid cancer reported years domestic literature including cases report molecular expressions skull ectopic thyroid cancer orthotopic thyroid cancer metastatic thyroid cancer akt mtor highly expressed skull ectopic thyroid cancer braf erk highly expressed orthotopic thyroid cancer iii mmp highly expressed metastatic thyroid cancer according molecular information base pik predicted key crossing gene three signaling pathways showed significant differences three thyroid cancers pik regulation roles three signaling pathways akt mtor mapk kappa pik gene important starting gene thyroid cancers canceration starts due fact local microenvironments thyroid cancers different parts different thyroid cancers regulated different signaling pathways ectopic thyroid cancer correlated akt mtor pathway high expression orthotopic thyroid related mapk braf erk signaling pathway high expression metastatic thyroid cancer related nfkb mmp high expression
pneumocystis jirovecii prophylaxis standard allogeneic stem cell transplantation allosct sometimes pentamidine low dose inhaled monthly human metabolism pentamidine depends cytochrome cypc frequency mutant cypc forms decreased function caucasians asians certain polynesians together common use cypc inhibitors allosct process creates risk impaired pentamidine clearance resulting toxicity ordinarily expected high doses given active infection examined charts consecutive pentamidine prophylaxed allosct patients center assessed hospital charges management toxicities unexplained time likely attributable retrospect pentamidine twenty eight percent experienced significant toxicities incurring added charges least thirteen percent suffered major toxicity incurring added charges least median added charge shorter survival pentamidine recipients including died pentamidine toxicities one proven postmortem non functional homozygous cypc mutation charges care attributable pentamidine toxicity exceeded preemptive genotyping would cost fold findings encourage routine use preemptive cypc genotyping allosct patients considered pentamidine
deep sequencing bacterial transcriptomes using rna seq technology made possible identify small non coding rnas rna molecules regulate gene expression response changing environments genome wide scale ever increasing range prokaryotes however simple reliable automated method identifying srna candidates large datasets lacking generating transcriptome exponential phase culture mycobacterium tuberculosis hrv developed validated automated method genome wide identification srna candidate containing regions within rna seq datasets based analysis characteristics reads coverage maps identified novel candidate srna encoding regions intergenic regions rna transcripts transcribed regions antisense open reading frames orf bear characteristics asrnas validated novel srna encoding regions northern blotting work provided simple automated method genome wide identification candidate srna encoding regions rna seq data also uncovered many novel candidate srna encoding regions tuberculosis reinforcing view control gene expression bacteria complex previously anticipated
purpose review autophagy evolutionarily conserved cellular programme turnover organelles proteins macromolecules involving lysosomal degradation pathway emerging evidence suggests autophagy play central role human metabolism well impact diverse cellular processes including organelle homeostasis cell death proliferation lipid glycogen metabolism regulation inflammation immune responses purpose review examine recent evidence role autophagy cellular metabolism relevance select human diseases involve disorders metabolism recent findings recent studies suggest autophagy may play multiple roles metabolic diseases including diabetes complications metabolic syndrome obesity myopathies inborn errors metabolism well diseases may involve altered mitochondrial function summary strategies aimed modulating autophagy may lead therapies diseases altered cellular tissue metabolism play key role
background objectivemore salivary constituents found show levels significantly different patients oral squamous cell carcinoma oscc found healthy controls therefore suggested potential salivary biomarkers oscc detection however many potential oscc salivary biomarkers also involved chronic inflammation whether levels biomarkers could affected presence chronic periodontitis known objective pilot study therefore measure levels seven previously reported potential oscc salivary mrna biomarkers patients chronic periodontitis compare levels found patients oscc healthy controls seven salivary mrnas interleukin dual specificity phosphatase histone family ornithine decarboxylase antizyme calcium binding protein spermidine spermine acetyltransferase material methodsunstimulated whole saliva samples collected total human subjects following four study groups oscc cpns chronic periodontitis moderate severe degree non smokers cps chronic periodontitis moderate severe degree smokers healthy controls levels mrna patient groups oscc chronic periodontitis relative healthy controls determined pre amplification reverse transcription quantitative polymerase chain reaction approach nested gene specific primers results recorded analyzed bio rad cfx real time system mean fold changes pair patient control groups analyzed mann whitney test bonferroni corrections resultsonly showed significantly higher levels patients oscc compared patients cpns cps difference levels patients oscc healthy controls also marginally significant significant difference levels salivary dual specificity phosphatase mrnas patients oscc patients cpns respectively significant difference levels salivary ornithine decarboxylase antizyme spermine acetyltransferase mrnas patients oscc patients cps respectively significant difference levels histone family mrna patients oscc either cps healthy controls conclusionssalivary mrna could reliable biomarker oscc detection regardless presence chronic periodontitis presence chronic periodontitis could significantly affect levels six mrnas negatively influence reliability using biomarkers oral cancer detection
flowers main sexual reproductive organs plants shapes colours scents corolla plant flowers involved attracting insect pollinators increasing reproductive success process corolla senescence investigated ipomoea purpurea convolvulaceae study research methods plant anatomy cytology cell chemistry molecular biology used results showed flowering stage cells already began show distortion chromatin condensation mitochondrial membrane degradation tonoplast dissolution rupture stage genomic dna underwent massive gradual random degradation however judging shape structure aging characteristics appear early flower senescence stage senescence process slow completed late stage flower senescence withering corolla may safely arrive conclusion corolla senescence purpurea mediated programmed cell death pcd occurred flowering stage corolla senescence exhibited obvious temporal rhythm demonstrated high degree coordination pollination fertilization
accumulated data shown alternatively activated macrophage exerts modulatory role many diseases including colitis interleukin critical modulator adaptive innate immune implicated autoimmunity inflammation previously reported functions protective modulator tnbs induced colitis closely related treg switch present novel evidence suggesting primes macrophage alternatively activated macrophages aam tnbs induced colitis strong polarized effect tightly associated markedly increased induction type cytokines confirm beneficial effects aam induced peritoneal aams isolated treated mice transferred recipient mice tnbs colitis adoptive transfer resulted prominent inhibition disease activity inflammatory cytokines tnbs treated mice conclusion data provide clear evidence plays protective role tnbs induced colitis closely related aam polarization
background due variegated colorful leaves ornamental kale brassica oleracea var acephala become popular ornamental plant study report fine mapping analysis candidate purple leaf gene using backcross population population derived two parental lines white leaves purple leaves results genetic analysis indicated purple leaf trait controlled single dominant gene named bopr using markers developed based reference genome bopr gene preliminarily mapped interval chromosome flanking markers boid genetic distances respectively recombination rate within interval almost times higher usual level could caused assembly error reference genome interval primers designed based another oleracea reference genome among newly designed indel markers brid brid found closest bopr flanking gene genetic distances respectively interval two markers reference genome seven annotated genes located within genomic region bog shows high homology atg dihydroflavonol reductase identified candidate gene bopr blast analysis revealed interval located unanchored scaffold scaffold confirming existence assembly error interval boid reference genome conclusions study identified candidate gene bopr lays foundation cloning functional analysis gene
several simian adenoviruses advs detected isolated various species non human primates goals monitoring health wildlife investigating potential zoonotic disease transmission provide evidence adv infection wild assamese macaques macaca assamensis assamensis phu khieo wildlife sanctuary thailand based polymerase chain reaction non invasively collected fecal samples eight fecal samples five monkeys showed evidence adv infection infected individuals infants juveniles phylogenetic analysis based sequence hexon polymerase genes revealed two different adv genotypes one genotype clustered human adv group another showed identity previously reported advs captive chinese rhesus macaques macaca mulatta may tentatively classified new species adv non human primates awaiting supporting evidence
role endogenously produced mediating varied physiological effects mammals spurred enormous recent interest understanding biology exploiting pharmacological potential early days field signaling large gaps exist understanding biological targets mechanisms action regulation biogenesis clearance two branches within sulfur metabolic pathway contribute production reverse transsulfuration pathway two pyridoxal phosphate dependent plp enzymes cystathionine beta synthase cystathionine gamma lyase convert homocysteine successively cystathionine cysteine branch cysteine catabolic pathway converts cysteine mercaptopyruvate via plp dependent cysteine aminotransferase subsequently mercaptopyruvate sulfur transferase bound persulfide liberated review present overview kinetics generating reactions compare structures plp enzymes involved biogenesis discuss strategies regulation article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
life driven set biological events naturally dynamic tightly orchestrated single molecule entire organisms although biochemistry molecular biology essential deciphering signaling cellular organismal level biological imaging instrumental unraveling life processes across multiple scales imaging methods considerably improved past decades allow grasp inner workings proteins organelles cells organs whole organisms allow visualize events relevant context also accurately quantify underlying biomechanical features provide essential information understanding commentary review palette imaging biophysical methods available scientific community elucidating wide array biological events cover recent developments intravital imaging light sheet microscopy super resolution imaging correlative light electron microscopy addition illustrate technologies led important insights cell biology molecular whole organism resolution altogether review offers snapshot current state art imaging methods contribute understanding life disease
ataxia telangiectasia rare incurable neurodegenerative disease caused biallelic mutations gene ataxia telangiectasia mutated atm lack functional atm kinase leads pleiotropic phenotype oxidative stress considered crucial role complex physiopathology recently steroids shown reduce neurological symptoms disease although molecular mechanism effect largely unknown present study demonstrated dexamethasone treatment lymphoblastoid cells increases content two abundant antioxidants glutathione gsh nadph dexamethasone promoted nuclear accumulation transcription factor nuclear factor erythroid derived like drive expression antioxidant pathways involved gsh synthesis nadph production latter effect via glucose phosphate dehydrogenase activation confirmed increased enzyme activity enhancement pentose phosphate pathway rate evidence indicates glucocorticoids able potentiate antioxidant defenses counteract oxidative stress ataxia telangiectasia also reveals unexpected role dexamethasone redox homeostasis cellular antioxidant activity
motif containing gtpase activating protein iqgap scaffold protein aberrantly expressed several tumor types closely associated development metastasis prognosis cancer several studies demonstrated iqgap broad prospects basic clinical research tumors present study aimed explore effects iqgap small interfering proliferation metastasis glioma cell lines markedly expressed iqgap human glioma cell lines transfected sirna transfection efficacy confirmed reverse transcription quantitative polymerase chain reaction qpcr western blot analysis cell proliferation detected using cell counting kit cell metastasis capabilities detected using cell adhesion migration invasion assays addition expression levels several tumor associated genes determined qpcr western blotting results indicated iqgap expressed higher levels glioma tissues compared normal brain tissues iqgap sirna significantly inhibited cell proliferation cell adhesion migration invasion furthermore expression levels matrix metalloproteinase mmp snail mmp fibronectin twist suppressed cadherin upregulated response sirna iqgap present study identified function iqgap glioma cell biology indicated may considered novel target glioma treatment
prophenoloxidase propo cascade principal defense system crustaceans consists variety pattern recognition proteins lipopolysaccharide beta glucan binding protein beta gbp beta gbp beta glucan recognition protein proteases serine protease protease inhibitors alpha macroglobulin pacifastin regulate protection mechanism crustaceans prophneoloxidase pathway protein protein interactions ppis immune related analyses still reported moreover structural features propo cascade proteins yet reported hence constructed three dimensional structural features propo pathway proteins ppis studied silico approach laminarin identified triggering activator showed energetic binding homology modeled beta gbp activated beta gbp followed protein protein complex formation leading phenoloxidase synthesis findings provided novel view propo mechanism enhanced knowledge innate immune system crustaceans via computation conclusion propose combined experimental computational approach analyze mechanism propo cascade proteins international union biochemistry molecular biology inc volume number pages
protein synthesis inhibitor anisomycin features unique benzylpyrrolidine system exhibits diverse biological pharmacologic activities biosynthetic origin remained obscure however report identification biosynthetic gene cluster bgc anisomycin streptomyces hygrospinosus var beijingensis bioactivity guided high throughput screening method using combination bioinformatic analysis reverse genetics chemical analysis vitro biochemical assays identified core four gene ensemble responsible synthesis pyrrolidine system anisomycin aniq encoding aminotransferase catalyzes initial deamination later reamination steps anip encoding transketolase implicated bring together glycolysis intermediate hydroxyphenylpyruvic acid form anisomycin molecular backbone anio encoding glycosyltransferase catalyzes cryptic glycosylation crucial downstream enzyme processing anin encoding bifunctional dehydrogenase mediates multistep pyrrolidine formation results reveal bgc pyrrolidine alkaloid biosynthesis distinct known bacterial alkaloid pathways provide signature sequences facilitate discovery bgcs encoding novel pyrrolidine alkaloids bacterial genomes biosynthetic insights study set foundation biosynthetic engineering pyrrolidine antibiotics
background fibroblasts key players maintaining skin homeostasis orchestrating physiological tissue repair skin regeneration dysfunctions fibroblasts occur aging senescent process lead delayed healing observed elderly people molecular mechanisms leading fibroblast dysfunction aging senescent process yet clarified previously changes patterns glycosylation observed fibroblasts aging senescent process effect changes function fibroblasts well documented investigated whether changes glycosylation process senescence may functional effects fibroblasts methods changes cell surface glycans skin fibroblasts process senescence examined early passage late passage skin fibroblasts fluorescence activated cell sorting analysis using lectins contributors changes cell surface glycans examined real time polymerase chain reaction western blot analysis effects changes glycosylation proliferation migration induction cellular senescence myofibroblast differentiation induced transforming growth factor tgf beta stimulation examined fibroblasts changes glycosylation performed galnac alpha benzyl sialidase treatment results decrease sialylation glycoproteins increase sialidase neu observed fibroblasts reduction sialylation effect proliferation migration induction cellular senescence hand myofibroblast differentiation inhibited reduction sialylation indicating sialylation important myofibroblast differentiation localization lipid rafts required myofibroblast differentiation inhibited reduction sialylation furthermore reduced myofibroblast differentiation fibroblasts restored sialidase inhibitor conclusions desialylation increased sialidase process senescence reduced localization lipid rafts tgf beta stimulation leading inhibition myofibroblast differentiation thus regulation sialylation may attractive strategy prevention regenerative therapy age related skin diseases cosmetic skin alterations chronic wounds caused delayed healing elderly people
advent single molecule imaging technologies made dynamics single molecule enzyme catalysis successfully probed real time vitro ever since single molecule enzymology entered golden age rapid developing individual features single enzyme molecule hidden overall average discovered many new catalytic mechanisms proposed single molecule enzymology sheds light dynamic interactions enzyme substrate product deepening understanding biochemical reactions
reproductive failure recurrent foetal loss unexplained infertility ivf implantation failure may number cases explained thrombophilia either acquired inherited several genes contribute thrombophilia major effect factor factor minor effect mthfr pai atiii etc aim study estimate frequency thrombophilia associated genotypes fiig fvg mthfrc pai group serbian women experiencing reproductive failure compare healthy female control group results showed marginally significant differences allele frequencies patients controls mutations fiig although statistical significance achieved found higher frequency variant allele patients compared controls respectively may point possible role polymorphism thrombotic events mthfrc pai found difference distributions genotype allele frequencies two groups three subjects rare genotypes two patients homozygous fvg one patient homozygous fiig performed additional biochemical analyses haemostasis well genotyping two polymorphisms mthfra atiiig
background primary infection toxoplasma gondii pregnancy may pose threat fetus women infected prior conception unlikely transmit parasite fetus maternal serology indicates possible primary infection amniocentesis toxoplasma pcr analysis performed antiparasitic treatment given however discriminating primary latent infection challenging unnecessary amniocenteses may occur procedure related fetal loss amniocentesis concern aim present study determine whether amniocentesis performed correct patients whether procedure safe indication methods retrospective study analysing data singleton pregnancies oslo university hospital undergoing amniocentesis due suspected maternal primary toxoplasma infection maternal neonatal infant data obtained clinical hospital records laboratory records pregnancy charts serum samples analysed norwegian institute public health toxoplasma reference laboratory oslo university hospital amniocenteses performed oslo university hospital experienced personnel time maternal infection evaluated retrospectively based serology results results women infected pregnancy possibly pregnancy certainly infected pregnancy forty nine women seroconverted igg antibody increase women igm positivity low igg avidity high dye test titre fifteen offspring infected toxoplasma one negative pcr amniotic fluid median gestational age amniocentesis gestational weeks gws median sample volume two miscarriages occurred weeks procedure performed one severe fetal toxoplasma infection conclusions half study population infected pregnancy order reduce unnecessary amniocenteses advise confirmatory serology weeks suspect result suggest serology interpreted dedicated multidisciplinary staff amniocentesis safe useful diagnostic procedure diagnosing congenital toxoplasma infection performed
one controversial questions enzymology today whether protein dynamics significant enzyme catalysis particular issue debates unusual temperature dependence kinetic isotope effects enzyme catalysed reactions present paper review recent model glowacki harvey mulholland nat chem capable reproducing intriguing temperature dependences enzyme reactions involving significant quantum tunnelling model relies treating multiple conformations enzyme substrate complex results show direct driving motions proteins necessary explain experimental observations show enzyme reactivity understood accounted framework transition state theory
recent years major advances understanding molecular biology lung cancer together significant improvements radiotherapy technologies revolutionized treatment non small cell lung cancer nsclc led development new therapies target molecular mutations specific tumor type acting cell surface antigens intracellular signaling pathways directly affecting cell survival time ablative dose radiotherapy delivered safely context metastatic disease article goecp seor oncological group study lung cancer spanish society radiation oncology reviews role new targeted therapies used combination radiotherapy patients locally advanced stage iii nsclc patients advanced metastatic stage nsclc
short robust expedient synthesis various aryl alpha arabinofuranosides using trichloroacetimidate precursor described procedure compatible range phenols varying pka values may amenable preparing wide range glycosides
vertebrates many responses stress well homeostatic maintenance basal metabolism regulated plasma glucocorticoid hormones gcs despite crucial functions levels gcs typically variable among individuals examined contribution several physiological factors individual variation plasma corticosterone cort number corticotropinreleasing hormone crh neurons magnocellular preoptic area brain free living allegheny mountain dusky salamanders addressed three hypotheses current condition hypothesis facilitation hypothesis trade hypothesis differential white blood cell count identified strong contributor individual variation baseline cort stress induced cort number crh neurons contrast found relationship cort crh body condition energy stores reproductive investment providing support current condition hypothesis tradeoff hypothesis involving reproduction difficulties interpreting functional consequences variation differential white blood cell counts unable distinguish facilitation hypothesis trade hypothesis related immune function however strong association differential white blood cell count hypothalamic pituitary adrenal interrenal hpa activation suggests thorough examination immune profiles critical understanding variation hpa activation
background stat signaling plays pivotal role tumorigenesis ezh epigenetic modification enhanced stat activity increased tyrosine phosphorylation stat another possible feedback mechanism clinical significance ezh stat investigated gastric cancer methods stat stat tyr ezh expression examined specimens matched normal tissues ihc staining ezh stat also identified five cell lines using pcr western blot analyses stat protein detected western blotting order investigate whether ezh expression directly regulated stat ezh expression detected using sirna stat stimulation dual luciferase reporter analyses electrophoretic mobility shift assay emsa chromatin immunoprecipitation chip assays clinical significance stat stat ezh expression evaluated multi factor cox regression kaplan meier analyses results hyper activation stat stat ezh expression observed cells tissues stat signaling correlated ezh expression consistent data showing stat transcriptional factor enhanced ezh transcriptional activity binding relative promoter region similar stat independent signature poor survival patients stat ezh stat ezh worse outcome others besides high levels stat ezh associated advanced tnm staging moreover treatment combination sistat ezh specific inhibitor deazaneplanocin dznep increased apoptotic ratio cells benefit targeting stat ezh interplay treatment conclusions results indicate stat status mediated ezh upregulation associated advanced tnm stage poor prognosis suggesting combination knockdown stat ezh inhibitor might novel therapy treatment collectively stat stat ezh expression provided precision medicine patients
well known disorders pyrimidine pathways may lead neurological hematological immunological diseases renal impairments association malignancies nucleotide homeostasis depends three stages pyrimidine metabolism novo synthesis catabolism recycling metabolites cytidine uridine addition used substrates pyrimidine nucleotide salvaging also act precursors cytidine triphosphate used biosynthetic pathway brain phosphatidylcholine phosphatidylethanolamine via kennedy cycle synthesis brain phosphatidylcholine membrane phosphatides utilize addition glucose three compounds present blood stream choline uridine polyunsaturated fatty acids like docosahexaenoic acid authors using rat models found oral administration two phospholipid precursors uridine omega fatty acids along choline diet increase amount synaptic membrane generated surviving striatal neurons rats induced parkinson disease authors found hypertensive rat fed uridine choline cognitive deficit resulted improved uridine also recently considered neuroactive molecule involvement important neurological functions improving memory sleep disorders anti epileptic effects well neuronal plasticity cytidine uridine uptaken brain via specific receptors successively salvaged corresponding nucleotides present review devoted enzymology pyrimidine pathways whose importance attracted attention several researchers investigating mechanisms underlying physiopathology brain
shift focus genes cells systems approach revolutionizing cell biology also providing impetus clinical medicine shift reductionistic holistic approach efficient disease management inevitably brings focus one longest unbroken healthcare systems world namely ayurveda medical system indigenous indian subcontinent distinctive feature ayurveda systems approach health disease theoretical framework vata pitta kapha ayurveda offers new paradigm understanding human system networked functional entity wherein system properties integral components open minded dialogue cell centric systems biology organism centric ayurveda open new exciting vistas research beneficial sciences could leave major imprint clinical practice
seafood predominant food source several organoarsenic compounds seafood species like crustaceans seaweed also contain inorganic arsenic ias well known toxicant unclear whether human biotransformation ingested organoarsenicals seafood result formation arsenicals health concern present controlled dietary study examined urinary excretion arsenic compounds total arsenic tas ias arsenobetaine dimethylarsinate dma methylarsonate following ingestion single test meal seafood cod tas farmed salmon tas blue mussel tas potato control tas volunteers amount ingested tas excreted via urine within varied significantly among groups cod salmon blue mussel control estimated total urinary excretion higher amount ingested blue mussel group also ingestion cod seemed result indicating possible endogenous formation organoarsenicals excretion ias lower ingested ingested ias excreted different groups although ingested amount ias dma low seafood groups tas ingested urinary dma excretion high blue mussel salmon groups counting excreted tas respectively conclusion data indicate possible formation result biotransformation organic arsenicals considerable amount dma excreted probably due methylation ingested ias due biotransformation organoarsenicals making inappropriate biomarker ias exposure populations high seafood intake elsevier inc rights reserved
enzymes extraordinarily effective catalysts evolved perform well defined highly specific chemical transformations studying nature rate enhancements mechanistic strategies enzymes important basic scientific point view well order improve rational design biomimetics kinetic isotope effect kie important tool study chemical reactions used extensively field enzymology theoretically prediction kies condensed phase environments enzymes challenging due need include nuclear quantum effects nqes herein describe recent progress group development multiscale simulation methods calculation nqes accurate computation kies also describe application several enzyme systems particular describe use combined quantum mechanics molecular mechanics methods classical quantum simulations development various novel path integral methods reviewed methods tailor suited enzyme systems degrees freedom involved chemistry need quantized application hybrid quantum classical simulation approach three case studies presented first case involves proton transfer alanine racemase second case presented involves orotidine monophosphate decarboxylase multidimensional free energy simulations together kinetic isotope effects combined study reaction mechanism finally discuss proton transfer nitroalkane oxidase enzyme employs tunneling catalytic fine tuning tool elsevier inc rights reserved
three linezolid resistant coagulase negative staphylococci cons including two staphylococcus cohnii one staphylococcus capitis isolated clinical staphylococcal isolates across china antibiotic susceptibilities bacteria determined agar dilution method pcr dna sequencing performed determine potential molecular mechanism linezolid resistance two linezolid resistant cohnii isolates subjected pulsed field gel electrophoresis pfge investigate genetic relatedness primer walking nuclease pfge southern blot hybridisation conducted ascertain location environment cfr gene three isolates positive cfr gene amino acid mutations ribosomal protein identified cohnii respectively also additional substitution pfge indicated two cohnii isolates belonged diverse clonal strains nuclease pfge southern blotting experiments indicated cfr gene three isolates resided plasmids similar size cfr harbouring segments capitis cohnii identical plasmid pss reported previously cfr carrying fragment cohnii indistinguishable formerly described plasmid pss conclusion presence cfr gene located plasmid main mechanism contributing resistance linezolid three staphylococcal isolates hence timely detection judicious use antibiotics essential prevent transmission resistance mechanism international society chemotherapy infection cancer published elsevier ltd rights reserved
tandem repeats often associated important chromosomal landmarks centromeres telomeres subtelomeric heterochromatic regions good candidates molecular cytogenetic markers tandem repeats present many plant species demonstrate dramatic differences unit length proportion genome chromosomal organization members genus allium large genomes represent challenging task current genetics using next generation sequencing data molecular cytogenetic methods discovered two tandemly organized repeats allium fistulosum genome hat cat together repeats comprise bunching onion genome copies hat copies cat fluorescent situ hybridization fish banding showed hat cat associated interstitial pericentromeric heterochromatin fistulosum chromosomes fish hat cat performed cepa wakegi natural allodiploid hybrid fistulosum cepa revealed repeats species specific produced specific hybridization patterns fistulosum chromosomes thus markers used interspecific breeding programs monitoring alien genetic material applied non denaturing fish allowed detection repeat bearing chromosomes within polymorphism hat chromosome location observed finding suggests rapid evolution hat repeat still ongoing
genome packaging double stranded rna dsrna phages widely studied using biochemical molecular biology methods adapted existing vitro packaging system one phage single molecule experimentation knowledge first attempt study details viral rna packaging using optical tweezers pseudomonas phage phi dsrna virus tripartite genome positive sense single stranded rna ssrna genome precursors packaged preformed procapsid negative strands synthesized present single molecule measurements viral ssrna packaging phi data show packaging proceeds intermittently slow fast phases likely reflects differences unfolding rna secondary structures ssrna packaged although mean packaging velocity relatively low sec packaging could reach sec fast packaging phase
vitro study using human intervertebral disc nucleus pulposus cells evaluate effects stimulation disc matrix macromolecule production nucleus pulposus cells cultured alginate beads treated stimulation effect bmp stimulation cells evaluated applying bmp blocker noggin applying additional bmp culture mrna levels disc extracellular matrix genes collagen aggrecan bmps measured real time pcr protein levels aggrecan collagen bmps determined elisas western blots sulfated glycosaminoglycan sgag content assayed using dmmb method stimulation upregulates production disc matrix macromolecular components sgag aggrecan collagen stimulation increases ratio mrna expression levels collagen collagen stimulation induces expression endogenous bmp bmp inhibition bmp activity using noggin reduces mediated upregulation aggrecan collagen bmp act synergy increase upregulation disc matrix macromolecules stimulation upregulates production intervertebral disc matrix macromolecules aggrecan collagen sgag mechanism involving bmps stimulation acts synergy bmp increase upregulation disc matrix macromolecules
unlimited ultrasensitivity kinase phosphatase futile cycle paradigmatic example collective behaviour multi enzyme systems however analysis relied michaelis molten reaction mechanism remains widely used despite century new knowledge modifying demodifying enzymes accomplish different biochemical tasks donor contributes modifying group often ignored without impact time scale separation taken account new forms reversible modification known exploit new algebraic methods steady state analysis reconcile analysis multi enzyme systems single enzyme biochemistry using zero order ultrasensitivity example identify property strong irreversibility product binding disallowed show unlimited ultrasensitivity preserved class complex strongly irreversible reaction mechanisms determine corresponding saturation conditions show unlimited ultrasensitivity arises singularity novel invariant summarises algebraic relationship modified unmodified substrate find singularity also underlies knife edge behaviour allocation substrate modification states implications coherence futile cycles within integrated tissue enzymes irreversible strongly singularity disappears form found unlimited ultrasensitivity may longer preserved methods introduced widely applicable reversible modification systems elsevier ltd rights reserved
costs amylase represent expenditures starch industry increase amylase production activity greatly cut production costs present study obtained high amylase producing strain bacteria wanglb identified member bacillus genus based rdna analysis fermentation conditions amylase production strain optimized maximum amylase activity obtained optimized conditions incubation liquid starch medium degrees inoculum concentration starch concentration peptone influences small organic inducers amylase production tested results showed mmol alanine greatly enhanced amylase production baseline level also conducted amylase enzymology analysis molecular weight amylase determined sds page optimum temperature amylase degrees respectively enzyme also showed high activity wide range temperatures degrees values activity amylase independent kinetic parameters max respectively finally amylase applied hydrolysis five different brands starch found hydrolyzability substrate amylase increased along starch solubility
trichloris crinita perennial forage grass species native arid regions american continent due extensive area distribution good forage quality resistance drought grazing species widely utilised forage revegetation purposes environments low water availability despite importance genetic improvement crinita limited partly consequence lack knowledge mode reproduction present work studied reproductive biology crinita means embryological analyses flow cytometric seed screen fcss self compatibility tests progeny testing morphological molecular markers cytological analyses revealed embryo sacs eight nuclei polygonum type crinita accessions analysed fcss histograms exhibited two clear peaks corresponding dna content indicating embryo sacs sexual origin controlled pollination experiments designed evaluate seed set demonstrated crinita self compatible whereas results morphological simple sequence repeat ssr marker analysis progeny revealed lack outcrossing together results indicate crinita reproduces sexually self compatible autogamous species expected data positive impact genetics breeding species therefore contribute proper utilisation arid regions
background androgen receptor splice variant associated resistance hormonal therapy castration resistant prostate cancer crpc due limitations methods available analysis identification reliable detection method may facilitate use biomarker clinical practice objective confirm predictor resistance hormonal therapy develop new approach assess highly sensitive digital droplet polymerase chain reaction ddpcr plasma derived exosomal rna design setting participants plasma samples collected crpc patients began second line hormonal treatment exosomes isolated rna extracted analysis ddpcr outcome measurements statistical analysis absolute target gene concentration copies per milliliter copies determined ddpcr statistical analyses performed spss software ibm corp armonk usa results limitations total patients received abiraterone enzalutamide patients found positive median progression free survival significantly longer negative versus patients overall survival significantly shorter participants baseline compared participants reached conclusions study demonstrates plasma derived exosomal rna reliable source detected sensitively ddpcr assay also showed resistance hormonal therapy may predicted making clinically relevant biomarker patient summary report first study method androgen receptor splice variant detection rna extracted cancer cell vesicles released blood results confirmed role predictive biomarker resistance hormonal therapy assay showed vesicles reliable source rna method fast highly sensitive affordable european association urology published elsevier rights reserved
rapidly growing list small rna species generated next generation sequencing technologies accelerated development new bioinformatics tools detection small rnas generated trnas transfer rna derived fragments trfs represent novel challenge accurately identifying distinguishing random degradation products trnas describe bioinformatics approach detect trfs next generation sequencing libraries also present biochemical purification protocol enriching trfs separating mirnas finally suggest reliable methods detecting quantifying trfs
histone methylation complicate dynamic epigenetic modification regulates gene transcription chromosomal structure cell differentiation discovered interaction demethylase lysine specific demethylase lsd important component corest repressor complex methyltransferase enhancer zeste homolog ezh essential component prc immuno precipitation gst pull assay performed observe interaction proteins mcf cells cultured transfected sirna mrna proteins examined using real time polymerase chain reaction pcr western blot assay respectively hplc analysis performed purify proteins rtpcr based quantitative chip analysis performed lsd interacts histone modification protein ezh mcf cells lsd ezh target common genes lsd knockdown ezh knockdown affect protein expression lsd knockdown ezh knockdown affect proteins involving ifn signaling pathway lsd ezh modify histone methylation irf gene locus systematically analyzed proteins affected either lsd ezh knockdown proteomic approaches identified interferon pathway pathways commonly affected interaction lsd ezh stabilizes binding lsd promoter region irf key transcription factor interferon pathway conclusion study revealed coordination histone demethylases methyl transferases might serve double lock system suppress expression interferon stimulated genes published elsevier masson sas
ssadh deficiency rare inborn error human metabolism disrupts normal metabolism inhibitory neurotransmitter gaba response defect physiologic fluids patients accumulate ghb compound numerous neuromodulatory properties clinical biochemical findings patients contrasted existing neuropharmacologic data ghb animals men conclude ghb contributes pathogenesis ssadh deficiency whether effect mediated ghb gaba following metabolic interconversion via synergistic mechanisms compounds remains determined animal model ssadh deficiency define role ghb pathogenesis ssadh deficiency provide useful vehicle evaluation new therapeutic intervention
purpose prolactin regulatory element binding protein preb member repeat protein family recognized transcriptional factor regulates prolactin promoter activity anterior pituitary rats preb expressed pituitary also various tissues including adipose tissue previous studies shown preb acts transcriptional regulator suppresses expression adiponectin gene cultured preadipocytes aim study examine potential role preb adipose tissue vivo methods transgenic mice overexpressing preb preb transgenic mice generated insulin resistance evaluated preb transgenic mice using glucose insulin tolerance tests adiponectin expression adipose tissue examined western blot analysis quantitative polymerase chain reaction qpcr expression levels stearoyl coa desaturase scd adiponectin receptor adipor quantified qpcr results glucose insulin tolerance tests revealed insulin resistance preb transgenic mice serum adiponectin leptin concentrations decreased adiponectin gene expression decreased adipose tissue confirmed downregulation adiponectin dependent hepatic scd gene upregulation adipor gene liver preb transgenic mice also found pioglitazone agonist peroxisome proliferator activated receptor improved insulin resistance preb transgenic mice day feeding period conclusions results demonstrated preb might contribute regulation adiponectin gene expression vivo
granulomatosis polyangiitis gpa formerly known wegener granulomatosis vasculitis unknown etiology affecting predominantly small medium sized vessels usually involving upper lower respiratory tract kidneys anti neutrophil cytoplasmic autoantibodies probably initial cause inflammatory process leads typical necrotizing lesions issue european journal immunology szczeklik etal eur immunol report interesting findings possible involvement cell subsets pathogenesis disease prospective study performed large cohort patients identifies lymphocytes possible pathogenic subset gpa treg cells possible suppressors inflammatory process two subsets peripheral blood could used cellular biomarkers disease activity would result particularly useful follow patients immunosuppressive treatment initiated
biological specimens cells tissues biofluids urine blood contain mixtures many different biomolecules contribute raman spectrum given point separation identification pure biochemical components remains one biggest challenges raman spectroscopy multivariate curve resolution matrix factorization method powerful yet flexible method used constraints non negativity decompose complex spectroscopic data matrix small number physically meaningful pure spectral components along relative abundances paper reviews recent applications multivariate curve resolution alternating least squares analysis raman spectroscopic imaging data obtained either vivo vitro biological medical samples
cdna encoding brain protein like brpl identified brain spinal cord cdna library gekko japonicus contains open reading frame corresponding deduced protein amino acids molecular weight brpl protein kda theoretical amino acid level brpl gecko shares similarity species northern blotting showed brpl ubiquitously expressed major organs gekko japonicus including brain spinal cord heart lung liver kidney suggesting fundamental biological role gene situ hybridization ish revealed positive hybridization signals present gray matter spinal cord change brpl expression spinal cord tail amputation examined reverse transcription polymerase chain reaction pcr expression level gene increased spinal cord tail amputation reached highest value week tail amputation indicated expression level brpl might associated process spinal cord injury regeneration
micrornas mirs emerged important clinical biomarkers diagnostic prognostic value relevant diseases cancer mirs pose unique challenges detection currently detected northern blotting real time pcr microarray techniques expensive complicated time consuming techniques feasible site mir determination study amperometric magnetobiosensors involving rna binding viral protein selective biorecognition element developed mir quantification based magnetosensors able detect fmol synthetic target endogenous mir selected model role wide variety cancers total rna extracted cancer cells human breast tumor specimens without pcr amplification sample preprocessing results open formidable perspectives diagnosis prognosis human cancers drug discovery programs
insulin like growth factor binding protein acts tumor suppressor inhibits pik akt signaling pathway due blocking insulin growth factor binding receptor hypothesized insulin like growth factor binding protein might targeted microrna promote tumor invasion poor outcome non small cell lung cancer via activation pik akt signaling pathway real time polymerase chain reaction immunohistochemistry performed determine level microrna insulin like growth factor binding protein messenger rna phosphorylated akt expression tumors non small cell lung cancer patients low insulin like growth factor binding protein messenger rna levels positive phosphorylated akt expression commonly found patients high microrna tumors low microrna tumors poorer overall survival relapse free survival observed patients high microrna tumors low microrna tumors mutated patients wild type patients mechanistically microrna promotes invasion ability mutated cells via pik akt activation targeting insulin like growth factor binding protein effect observed wild type cells increase phosphorylated akt expression due targeting insulin like growth factor binding protein microrna responsible cell invasion mutated cells conclusion microrna level promotes invasive ability mutated cells via pik akt activation targeting insulinlike growth factor binding protein thereby resulting mutated non small cell lung cancer patients poor outcomes
background aims investigate feasibility mechanism liver damage repair using bmscs investigated potential bmscs recovery liver damage using ccl induced rat model liver damage methodology phenotypings bmscs third generation analyzed flow cytometry bmscs labelled brdu infused via tail vein ccl induced rat model labeling yields observed detected flow cytometry liver samples taken immunohistochemistry concentration changes ast alt akp observed serum enzymology test transplantation results brdu cells recipient livers detected day bmscs transplantation engrafted cells found pen portal regions hepatic lobule day spread throughout lobules bmscs engraftments detected whole hepatic parenchyma serum levels alt ast akp group lower group day conclusions vivo expanded bmscs capable relocating chemically injured liver transplantation pluripotent stem cells appeared improve serum indices liver function
constantly elevated temperatures cause array physio biochemical changes tomato lycopersicum esculentum mill make fruit ripen quickly yield loss development tomato cultivars using genetic engineering approaches delay ripening offers new way keep tomatoes healthy heat stress expression small heat shock protein gene viscosity vis plays role increasing juice viscosity early ripening tissue soften emphasizes importance gene premature ripening aim work therefore develop useful system silencing vis gene using small interfering rna strategy agrobacterium strain harbouring binary vector picbv containing gus bar genes used adapt transformation process study primers designed amplified first exon vis gene amplified fragment used cloning pfgc xhoi ncoi site sense orientation additional fragment subsequently cloned bamhi xbai form sense antisense cloned fragment interrupted chsa intron agrobacterium strain lba binary vector pfgc harbors vis gene control promoter containing bar gene control mannopine synthase mas selectable marker used reduce expression vis gene fruit polymerase chain reaction pcr pcr northern blotting analysis applied detect putative transgenic plants significantly silencing vis gene potently occur new transgenic tomato cultivars produced enhanced ripening qualities recommendation growing heat stress
intracellular pathogens survive replicate within specialised membrane bound compartments considered pseudo organelles using obligate intracellular bacterium chlamydia illustrative example consider modes lipid transport pathogen containing compartments host organelles including formation static membrane contact sites discuss lipid scavenging mediated via reprogramming cellular transporters interfaces describe recent data suggesting pathogen effectors modulate formation specific membrane contacts study emerging mechanisms likely yield new insights cell biology lipid transport organelle communication highlights potential new targets strategies future therapeutics article part special issue entitled cellular lipid landscape edited tim levine anant menon authors published elsevier
human vitro fertilization ivf embryos routinely transferred uterus either day day development resulting implantation rate however mammalian species transfer cleavage stage embryos normally reside oviduct uterus results significantly lower implantation rate compared blastocysts therefore proposed order increase implantation rates human ivf one move extended culture transfer blastocyst stage transfer blastocysts help synchronize embryo female tract facilitate identification embryos little developmental potential order culture viable blastocysts important use one culture medium cater changing requirements preimplantation embryo develops differentiates sequential culture media used one obtain blastocysts resultant viability low use sequential serum free media human ivf resulted embryos becoming blastocysts implantation rate similar advances human embryo culture come replacement protein glycosaminoglycan hyaluronate suitable albumin supporting implantation mouse eliminate biological variation possible contamination blood products routine culture human blastocysts come introduction non invasive tests embryo viability capable identifying blastocysts likely develop given cohort implantation rate blastocysts higher cleavage stage embryo fewer embryos required transfer order establish successful pregnancy thereby reducing number multiple gestations increasing overall efficiency human ivf
background important step reconstruction metabolic network annotation metabolites metabolites generally annotated various database structure based identifiers metabolite annotations metabolic reconstructions may incorrect incomplete thus need updated prior use genome scale metabolic reconstructions generally include hundreds metabolites manually updating annotations therefore highly laborious prompted look open source software applications could facilitate automatic updating annotations mapping available metabolite identifiers identified three applications developed metabolomics chemical informatics communities potential solutions applications metmask chemical translation system unichem first implements metabolite masking strategy mapping identifiers whereas latter two implement different versions inchi based strategy evaluated suitability applications task mapping metabolite identifiers genome scale metabolic reconstructions applied best suited application updating identifiers recon latest reconstruction human metabolism results three applications enabled partially automatic updating metabolite identifiers significant manual effort still required fully update identifiers able reduce manual effort searching new identifiers using multiple types information metabolites multiple types information combined chemical translation system enabled update metabolite identifiers recon approximately identifiers updated automatically conclusions found inchi based application chemical translation system better suited task mapping metabolite identifiers genome scale metabolic reconstructions identified several features however could added application order tailor task
one main factors limiting molluscs production presence pathogens diseases disease agent transfer via transfers live molluscs major cause disease outbreaks epizootics european union adopted several decisions directives last control movements marine organisms european countries disease established determined area eradication complicated task life cycle pathogens completely known good early diagnosis disease could appropriate way deal besides molluscs adaptive immune response vaccination strategies possible molluscs listed diseases legislation mainly protozoan parasites histological techniques recognized diagnosis however molecular techniques increasingly used primarily confirmatory techniques presence pathogens also disease monitoring programs research perspectives mainly focussed optimization already described techniques gain sensitivity sensibility development new molecular biology techniques quantitative real time pcrs faster easier apply allow positive diagnosis even early stages infection however molecular tools detect dna sequences pathogen imply pathogen viable cell host infection established consequently needs validated techniques histology situ hybridization reliability determined
tissue regeneration could offer therapeutic advantages individuals experiencing organ tissue damage recently advances nanotechnology provided various nanomaterials wide range applications modulating stem cell behavior therapeutic applications tissue regeneration defects cell proliferation differentiation low mechanical strength scaffolds inefficient production factors essential stem cell differentiation current challenges tissue regeneration review provides brief explanation link nanotechnology tissue engineering highlighting current literature interaction nanoparticles nps stem cells promotional effect nps stem cell differentiation various lineages possible therapeutic applications also tried describe mechanism nps regulate spatial temporal release kinetics vital growth differentiation factors enhance stem cell differentiation improve culture conditions vivo tissue regeneration field nanotechnology promising provides novel nanomaterials methods valuable clinical applications regenerative medicine understanding mechanism well toxic effects nps stem cell biology undoubtedly provide valuable insight clinical application regenerative medicine
leigh syndrome severe neurodegenerative disease heterogeneous genetic etiology report novel variant mitochondrial trna isoleucine gene child leigh syndrome mitochondrial proliferation lactic acidosis abnormal respiratory chain enzymology variant present heteroplasmy blood cultured fibroblasts proband pathogenic mutation causing leigh syndrome elsevier mitochondria research society rights reserved
plant parasitic nematodes developed series enzymes degrade rigid plant cell wall beta endoglucanase important component ditylenchus destructor migratory endoparasite molecular data published two novel beta endoglucanases eng eng cloned characterised destructor eng putative protein consists signal peptide catalytic domain carbohydrate binding module cbm contrast cbm domain absent eng exon intron structure phylogenetic tree indicate cellulase genes could evolved common ancestral genes southern blotting confirmed beta endoglucanases nematode origin member small multi gene family situ hybridisation localised expression eng eng subventral pharyngeal glands pcr showed genes expressed adult female second stage juvenile stylet secretions destructor showed clear cellulase activity carboxymethylcellulose cmc plate assay similar results observed total homogenates eng eng recombinant proteins results demonstrated destructor produce secrete functional cellulases silencing putative beta endoglucanases double stranded rna dsrna resulted average decrease infection successful rnai vitro demonstrated study confirmed eng eng play important roles nematode parasitism
paradoxical reaction antituberculosis treatment rare paediatric population report year old girl high fever productive cough last three weeks tuberculine test quantiferon positive erythrocyte sedimentation rate culture polymerase chain reaction tuberculosis negative chest ray showed widened right mediastinum tuberculosis diagnosed therefore treatment standard doses rifampicin isoniazid pyrazinamide ethambutol started twenty one days later presented high fever symptoms worsening radiological findings normal blood tests serologies brain magnetic resonance imaging patient presented paradoxical reaction given prednisone day fever disappeared hours important consider paradoxical reaction causes clinical radiological worsening ruled avoid unnecessary tests treatment modifications
dietary phenolic compounds often transformed absorption transformation modulates biological activity different studies carried understand gut microbiota transformations particular polyphenol types identify responsible microorganisms although potentially thousands different phenolic compounds diet typically transformed much smaller number metabolites aim review discuss current information microbial degradation metabolites obtained different phenolics formation pathways identifying differences similarities modulation gut microbial population phenolics also reviewed order understand two way phenolic microbiota interaction clostridium eubacterium genera phylogenetically associated common elements involved metabolism many phenolics health benefits phenolic consumption attributed bioactive metabolites also modulation intestinal bacterial population
dietary supplements contain macro microelements also elements affect human metabolism many products available market contain chromium compounds together chitosan used dietary supplement enhancing digestion lipids studies involved natural chitosan krill available market deacetylation degree dietary supplements containing chitosan vitana hitec nutrition well product containing ionic chromium niacin several aminoacids chromdiet study determined capability binding fatty bile acids dietary supplements containing chitosan chromium process lipids bile acids adsorption investigated means dynamic method biopharmaceutical model imitating vitro conditions findings prove extracts fatty acids bile acids undergo adsorption various kinds adjuvant substances found dietary supplements confirms significant effect polymers bioavailability fatty bile acids human organism addition chromium supplement effect capability chitosan bind fatty bile acids mean adsorption bile acids polymer chitosan inulin fibre ranges depending decreases bioavailability lipids
gut microbiome contributes approximately whole body weight recent studies suggest gut microbiota profound effect human metabolism potentially contributing several features metabolic syndrome metabolic syndrome defined clustering metabolic disorders include central adiposity visceral fat accumulation dyslipidemia insulin resistance dysglycemia non optimal blood pressure levels metabolic syndrome associated increased risk cardiovascular diseases type diabetes estimated around percent world adult population metabolic syndrome manuscript reviewed existing data linking gut microbiome metabolic syndrome existing evidence studies animals humans support link gut microbiome various components metabolic syndrome possible pathways include involvement energy homeostasis metabolic processes modulation inflammatory signaling pathways interferences immune system interference renin angiotensin system modification gut microbiota via prebiotics probiotics dietary interventions provided evidence support possible beneficial effect interventions targeting gut microbiota modulation treat components complications metabolic syndrome diabetes india published elsevier ltd rights reserved
allergic rhinitis common illness children impair quality life furthermore many children remain symptomatic despite maximizing systemic antihistamine topical therapies clinical juncture immunotherapy may considered efficacy safety associated subcutaneous scit sublingual slit approaches reviewed positioned treatment options pediatric patients specific focus current literature relates slit children including perennial allergic rhinitis although extensive experience slit treatment europe grass ragweed tablet forms slit approved approaches care pediatric patients allergic rhinitis presented american academy allergy asthma immunology allergy clin immunol pract
reactive protein crp present sites inflammation including amyloid plaques atherosclerotic lesions arthritic joints crp native pentameric structural conformation binds cells molecules exposed phosphocholine pch groups crp non native pentameric structural conformation binds variety deposited denatured aggregated proteins addition binding pch containing substances study investigated effects prototypical reactive oxygen species also present sites inflammation ligand recognition function crp controlled treatment native crp monomerize crp affect pch binding activity crp solid phase elisa based ligand binding assays purified pentameric treated crp bound number immobilized proteins including oxidized ldl igg amyloid peptide binding protein factor crp concentration ligand concentration dependent manner using oxidized ldl representative protein ligand treated crp found binding occurred independent manner involve pch binding site crp conclude biological modifier structure ligand recognition function crp overall data suggest ligand recognition function crp dependent presence inflammatory microenvironment hypothesize one functions crp sites inflammation sense inflammatory microenvironment change structure response remain pentameric bind pathogenic proteins deposited sites
relatively new field microrna mir experienced rapid growth methodology associated detection bioanalysis well role omics research clinical diagnostics new therapeutic strategies breadth area research seemingly exponential increase number publications subject present scientists new field daunting amount information evaluate review aims provide collective overview mir detection methods relating conventional established techniques quantitative reverse transcription polymerase chain reaction qpcr microarray northern blotting relatively recent advancements next generation sequencing ngs highly sensitive biosensors computational prediction microrna targets common mir research strategies guide interested readers toward focused study mir research surrounding technology
background ras related protein rab functions either oncogene tumor suppressor cancer type dependent manner aimed investigate clinical significance rab prostate cancer pca methods quantitative real time polymerase chain reaction western blot immunohistochemistry respectively performed detect rab mrna protein expression pca adjacent non cancerous prostate tissues receiver operating characteristic curve analysis used evaluate predictive diagnostic value rab associations rab expression various clinicopathological characteristics biochemical recurrence free survival pca patients statistically evaluated vitro pca cell proliferation assessed cck assay cell migration invasion activities evaluated transwell assay following transfection rab small interfering rna results ras related protein mrna protein expression pca tissues significantly higher adjacent non cancerous prostate tissues area curve rab immunoreactive score irs sensitivity specificity high rab irs significantly associated high gleason score distant metastasis pca patients high rab irs shorter overall biochemical recurrence free survivals low rab irs cox regression analysis identified rab independent biomarker overall biochemical recurrence free survivals pca patients exploring activities vitro rab downregulation found inhibit pca cell proliferation migration invasion conclusions high expression rab may contribute malignant progression biochemical recurrence pca patients radical prostatectomy
sucrose exuded plants rhizosphere crucial component symbiotic association beneficial fungus trichoderma plant roots article sought identify characterize molecular basis sucrose uptake fungal cells several bioinformatics tools enabled identify plant like sucrose transporter genome trichoderma virens tvsut gene expression profiles fungal cells analyzed northern blotting quantitative real time pcr qrt pcr biochemical physiological studies conducted fungal strains impaired expression tvsut tvsut exhibits biochemical properties similar described sucrose symporters plants null expression tvsut caused detrimental effect fungal growth sucrose sole source carbon medium also affected expression genes involved symbiotic association similar plants virens contains highly specific sucrose symporter induced early stages root colonization results suggest active sucrose transference plant fungal cells beneficial associations addition expression experiments suggest existence sucrose dependent network fungal cells regulates symbiotic association
anthropogenic heat emissions generated human activities london analysed detail considered context long term past future trends emissions buildings road traffic human metabolism finely resolved space min time software compute visualize results provided annual mean anthropogenic heat flux greater london highest peaks central activities zone caz associated extensive service industry activities towards outskirts city emissions domestic sector road traffic dominate anthropogenic heat mostly emitted sensible heat latent heat fraction heat wastewater fraction implications related use evaporative cooling towers briefly addressed projections indicate increase heat emissions within caz next two decades related intensification activities within area copyright royal meteorological society
prokaryotic evolution affected horizontal transfer genetic material recombination inference evolutionary tree bacteria thus relies accurate identification population genetic structure recombination derived mosaicism rapidly growing databases represent challenge computational methods detect recombinations bacterial genomes introduce novel algorithm called fastgear identifies lineages diverse microbial alignments recombinations external origins algorithm detects recent recombinations affecting isolates ancestral recombinations detected lineages affecting entire lineages thus providing insight recombinations affecting deep branches phylogenetic tree simulations fastgear comparable power detect recent recombinations outstanding power detect ancestral ones compared state art methods often fraction computational cost demonstrate utility method analyzing collection whole genomes recombinogenic pathogen streptococcus pneumoniae method provided high resolution view recombination across genome examined detail penicillin binding genes across streptococcus genus demonstrating previously undetected genetic exchanges different species three loci hence fastgear readily applied investigate mosaicism bacterial genes across multiple species finally fastgear correctly identified many known recombination hotspots pointed potential new ones matlab code linux windows executables available https users ics aalto similar pemartti fastgear last accessed february
eukaryotes oxidized pufas called oxylipins vital signaling molecules first step biosynthesis may catalyzed lipoxygenase lox forms hydroperoxides introducing dioxygen pufas characterized csplox phylogenetically distant lox family member cyanothece pcc determined crystal structure addition classical two domains found plant animal coral loxs identified terminal helical extension reminiscent long alpha helical insertion pseudomonas aeruginosa lox liposome flotation studies helical extension rather beta barrel domain crucial membrane binding function additionally csplox could oxygenate diarachidonyl glycero phosphocholine suggesting enzyme may act directly membranes fatty acids bind active site tail first orientation binding mode supported fact csplox catalyzed oxygenation position linoleic arachidonic acid resulting hydroperoxides respectively together results reveal unifying structural features loxs function core active site important lipoxygenation thus highly conserved peripheral domains functioning membrane substrate binding variable
xyloglucan endotransglycosylase xet catalyses transglycosylation xyloglucan major hemicellulose polymer thought mediate cross linkining cellulose microfibrils cellular walls proposed involved control cell wall relaxation understand relationship longan fruit growth xet gene expression patterns three xet genes fruit identified expression profiles pericarp aril tissues fruit different development stages investigated three full length cdnas encoding xets named dixet dixet dixet respectively isolated expanding fruit using pcr race pcr rapid amplification cdna ends methods northern blotting analysis showed three dixet mrnas exhibited different patterns fruit growth development accumulation met kept changeable fruit growth development xet mrna accumulations pericarp aril increased gradually following fruit growth whole fruit developmental stage addition dixet accumulate pericarp whole fruit development stage could detected aril fruit rapid aril growth stage daa results indicated dixet associated growth pericarp aril longan fruit dixet related pericarp growth dixet primarily responsible aril growth characterize expressions three xets regulated plant growth substances alpha naphthalene acetic acid naa thidiazuron tdz used treat longan fruit daa daa pericarp aril grew rapidly respectively found treatment daa tdz increased accumulation dixet mrna treatment however naa tdz increased accumulation dixet treatment although dixet accumulate whole fruit treatment daa naa tdz increased accumulations dixets aril except dixet aril naa treatment addition expression patterns three xets showed different tissue specificity results suggested xet genes played different role longan fruit growth showed different response plant growth substances existed difference different growth stage published elsevier ireland ltd
okinawa spiny rat tokudaia muenninki species chromosome genus tokudaia phylogenic relationship two species tokudaia osimensis tokudaia tokunoshimensis lacking chromosome mammalian sex determining gene sry unknown furthermore little cytogenetic analysis sex chromosomes muenninki therefore constructed molecular phylogenetic trees nucleotide sequences cyt rag irbp trees strongly supported muenninki first diverge tokudaia ancestor indicating loss chromosome sry occurred common ancestor two species muenninki diverged found chromosomes muenninki consisted large euchromatic heterochromatic regions conducting banding analyses pcr southern blotting fish revealed muenninki males multiple sry copies long arm chromosome least three sry sequences contained complete open reading frame orf species specific substitution alanine serine found copies dna binding surface within hmg box suggesting occurred original sry
impacts two hydroponic plants cyperus alternifolius canna generalis apple snail pomacea canaliculata nutrient change behaviors kinetics alkaline phosphatase eutrophic water studied paper mesocosm experiment contained six different treatment systems conducted october november total removal rates alternifolius generalis total nitrogen total phosphorous chlorophyll contents respectively function organic hydrolysis decreased well terms lower velocity reaction lower max overlying water combined lower affinity substrate higher values interstitial water surface sediment contrary snails exhibited activation alkaline phosphatase water body higher max lower values interstitial water higher max sediment higher max despite high concentrations mesocosms obvious correlation found orthophosphate alkaline phosphatase activity apa study indicated induction repression mechanism work hypereutrophic water additionally remarkable feature snails coupled plants would aggravate eutrophication water column due grazing snails plants food source study highlighted investigate enzymology mechanism macrophyte snail phytoplankton systems give implications restoration eutrophied water using floating bed systems
occurring alongside main saccharide components antioxidant compounds honey play significant roles human metabolism nutrition six individual organic acids two saccharides determined simple rapid capillary electrophoretic technique without special treatment gluconic acid predominant organic acid detected samples formic malic citric succinic acids determined minor concentrations oxalic acid detected samples glucose fructose content found respectively fructose glucose ratios ten honey samples study average value gluconic acid content changed depending type honey average value organic acids minor concentrations detected antioxidant properties honey analysed terms total polyphenols ferric reducing antioxidant power frap dipheny picrylhydrazyl dpph scavenging activities among samples darker honeys showed higher antioxidant values related total phenolic compound contents
tobacco bright yellow cells one best characterized cell lines attractive expression system heterologous protein expression however expression foreign proteins currently hampered low yield partially result proteolytic degradation human granulocyte colony stimulating factor csf hematopoietic cytokine recombinant csf successfully used treatment chemotherapy induced neutropenia cancer patients describe simple strategy producing biologically active csf tobacco cells localized apoplast cells well targeted endoplasmic reticulum targeting significantly enhanced recombinant production scaled expressed apoplasts southern blotting confirmed stable integration csf nuclear genome expression csf analysed western blotting total soluble protein containing csf isolated positive calli showed proliferative potential tested cell lines mtt assay also report potential fluorescence activated cell sorting approach efficient sorting csf expressing cell lines enable generation homogenous high producing cell lines
approach developed uses enzyme inhibitors support assessment pathways responsible conversion intravenously administered ester amide prodrugs different biological matrices methodology applied ceftobiprole medocaril bal prodrug cephalosporin antibiotic ceftobiprole prodrug incubated plasma postmitochondrial supernatant fractions human liver impaired nonimpaired kidney intestine well erythrocytes presence absence different enzyme inhibitors acetylcholinesterase pseudocholinesterase retinyl palmitoyl hydrolase serine esterases amidases cholinesterase hydrolysis rapid extensive dependent presence beta nicotinamide adenine dinucleotide phosphate reduced form matrices tested suggesting involvement carboxylesterases enzymes hydrolysis healthy human plasma rapid complete partially inhibited presence paraoxonase inhibitors liver hepatic impaired patients suggesting involvement nonparaoxonase pathways results demonstrate utility approach confirming presence multiple conversion pathways intravenously administered prodrugs case bal demonstrated prodrug unlikely affected genetic polymorphisms drug interactions environmental factors might inhibit induce enzymes involved conversion wiley periodicals inc american pharmacists association pharm sci
purpose establish cytochrome cyp isozymes involved metabolism alkylating agent thiotepa pharmacologically active metabolite tepa methods vitro chemical inhibition studies conducted incubating thiotepa pooled human hepatic microsomes presence known inhibitors cypa cypa cypc cypc cypc cypd cype cypa studies also performed cloned expressed cypa cypa cype cypb microsomes anti cypb monoclonal antibody results known cypa inhibitors reduced tepa production inhibition cype inhibitors inconsistent inhibitors produced little change tepa formation cloned expressed cypb cypa microsomes catalyzed tepa formation whereas cypa cype incubation thiotepa anti cypb antibody cloned expressed cypb microsomes resulted reductions formation tepa change tepa formation occurred human liver microsomes conclusions thiotepa metabolized human liver microsomes cypa major cypb minor potential cyp mediated drug interactions thiotepa pharmacokinetic variability thiotepa may related expression hepatic cyp isozymes
examined whether toll like receptor tlr mediated stimulation macrophage activating lipopeptide malp originally purified mycoplasma fermentans induces cyclooxygenase cox prostaglandin human placental trophoblast cells signaling mechanism malp exerts effect also examined human placental trophoblast cells isolated term placenta used tlr expression trophoblast cells confirmed multiplex pcr immunocytochemistry examined whether malp induces cox pge northern blotting pcr western blotting elisa respectively activation kappa map kinases erk examined western blotting effects inhibitors kappa mek malp induced pge production also evaluated tlr tlr tlr expressed human placental trophoblast cells malp significantly induced cox expression enhanced pge production dose dependent manner malp induced activation kappa erk mapk inhibitors kappa mek blocked malp inducible pge production tlr mediated stimulation malp induces cox pge human placental trophoblast cells via kappa map kinases pathways elsevier ireland ltd rights reserved
apoptosis hundreds proteins cleaved caspases executioner caspase however caspase shares substrate primary sequence preference caspase better cleaving poly adp ribose polymerase parp hsp cochaperone despite lower intrinsic activity identified key lysine residues kkkk within terminal domain caspase critical elements efficient proteolysis two substrates caspase terminal domain binds parp improves cleavage chimeric caspase similar fold cellular expression caspase lacking critical lysine residues resulted less efficient parp cleavage compared cells expressing wild type peptidase showed using series caspase chimeras positioning enzyme providing mechanistic insight binding exosite summary uncovered role terminal domain ntd terminal peptide caspase promoting key substrate proteolysis
recombinant heparinase iii rhepiii bacteroides stercoris cloned expressed characterized full length heparinase iii gene stercoris identified southern blotting sequence deposited genbank heparinase iii gene long cloned overexpressed escherichia coli highly active rhepiii easily purified using one step immobilized affinity column chromatography enzymatic properties substrate specificities rhepiii assessed kinetic constants calculated rhepiii active sodium phosphate buffer nacl degrees amino acid modification studies site directed mutagenesis assay cysteines histidines identified crucial residues enzymatic activity moreover enzyme digested heparan sulfate also heparin hyaluronic acid degradation products verified strong anion exchange high performance liquid chromatography characteristics including active residues substrate specificities interesting compared existing heparinase iii species anticipate convenience purification characteristics enzyme make powerful tool studies glycosaminoglycans lyases
objective quantify cell free fetal dna cffdna fetal specific epigenetic marker hypermethylated rassfa maternal plasma normal pregnant women weeks gestation assess relationship maternal age height pre pregnancy weight body mass index bmi methods hundred normal pregnant women within gestational age weeks randomly selected grouped five group group group group group weeks maternal plasma dna extracted digested methylation sensitive restriction enzyme bstui fetal specific dna cffdna quantified real time polymerase chain reaction qrt pcr results mean hypermethylated rassfa concentrations different gestational groups group group group group group copies pearson correlation analysis showed highly significant positive correlation cffdna gestational age bmi also found positively related cffdna however show correlation maternal age height pre pregnancy weight conclusions gestational age dependent increase hypermethylated rassfa fetal specific epigenetic marker maternal plasma demonstrated indian study group normal pregnant women findings would form basis future studies involving pregnancy complications would aid early diagnosis placental pathologies hypermethylated rassfa
recent silico studies suggested transcription cofactor lim protein fhl major transcriptional regulator mouse natural killer cells however expression role fhl cell biology unknown confirm fhl expressed mouse human cells using fhl mice found fhl controls cell development bone marrow maturation peripheral organs evaluate importance fhl cell activation fhl mice infected streptococcus pneumoniae fhl mice highly susceptible infection activation lung cells altered fhl mice leading decreased ifn production loss control bacterial burden collectively data reveal fhl new transcription cofactor implicated cell development activation pulmonary bacterial infection
background tophi contribute musculoskeletal disability joint damage poor health related quality life people gout aim study examine role slca abcg variants tophaceous disease people gout methods participants gout fulfilling american rheumatism association ara classification criteria recruited primary secondary care attended detailed study visit presence palpable tophi recorded slca abcg abcg genotyped data analysed according tophus status results compared participants without tophi tophi older longer disease duration higher serum creatinine likely maori pacific polynesian ancestry slca associated tophi however risk alleles abcg single nucleotide polymorphisms snps present frequently tophi effect limited participants maori pacific ancestry significant effect observed western polynesian ancestry risk allele strongly associated tophi western polynesian group eastern polynesian group non polynesian group abcg associations persisted western polynesian group adjusting serum urate creatinine disease duration including abcg variants regression models conclusions variation abcg function may play role development tophaceous disease populations high prevalence severe gout
bacillus related genera bacillales within firmicutes harbor variety secondary metabolite gene clusters encoding polyketide synthases non ribosomal peptide synthetases responsible remarkable diverse number polyketides pks lipopeptides lps compounds may utilized medical agricultural applications summarize knowledge structural diversity underlying gene clusters lps pks bacillales moreover evaluate using published prediction tools potential metabolic capacity bacteria produce type pks lps huge sequence repository bacterial genomes metagenomes provides basis genome mining reveal potential novel structurally diverse secondary metabolites otherwise cumbersome task isolate often unstable pks deduce structure streamlined using web based prediction tools identified several novel clusters pks lps genomes deposited database analysis suggests substantial fraction predicted lps type pks uncharacterized functions remain studied known predicted lps pks occurred majority plant associated genera predominantly bacillus paenibacillus surprisingly many genera environments contain compounds indicating role secondary metabolites plant associated niches aleti published elsevier behalf research network computational structural biotechnology open access article license http creativecommons org licenses
study examined effect resistance exercise production recruitment percentage adhesion characteristics granulocytes andwithout polyphenol ppb supplementation thirty eight untrained men randomized three groups ppb years placebo years control con years blood samples obtained pre pre immediately postresistance exercise ppb rest con fine needle biopsies obtained vastus lateralis pre plasma concentrations intramuscular content interleukin granulocyte csf granulocyte macrophage colony stimulating factor csf analyzed via multiplex assays changes relative number circulating granulocytes adhesion receptor cdb assessed using flow cytometry intramuscular significantly elevated area curve analysis indicated greater intramuscular content ppb across groups circulating csf elevated pre csf elevated relative number granulocytes elevated ppb respectively across groups granulocyte cdb expression upregulated pre results indicated increase circulating cdb granulocytes within muscle following intense resistance exercise polyphenol supplementation may attenuate response however affect granulocyte percentage adhesion molecule expression peripheral blood following resistance exercise
background leukotoxin ltx expressed aggregatibacter actinomycetemcomitans powerful exotoxin cause imbalance host response immunoreactivity ltx marker presence leukotoxic actinomycetemcomitans presence may modify disease pattern colonized individuals aim present study examine presence systemic immunoreactivity actionmycetemcomitans ltx respect clinical inflammatory findings individuals without periodontitis methods periodontal status examined patients severe periodontitis healthy controls patients received periodontal treatment systemic biomarkers associated inflammation infections well clinical parameters analyzed baseline months treatment results presence immunoreactivity ltx associated impaired remission disease periodontal treatment immunoreactivity also significantly associated increased systemic levels actinomycetemcomitans specific immunoglobulins increasing age conclusion presence levels systemic immunoreactivity actinomycetemcomitans ltx associated decreased remission otherwise successful periodontal treatment
objectives growing evidence supports view diagnosis coeliac disease made serological tests alone although approach still widely accepted previously showed retrospective prospective studies adults iga tissue transglutaminase antibody cut defined positive predictive value following change analytical method measuring antibody objectives examine finding larger series adults ascertain whether diagnosis reliably made proportion patients without need small bowel biopsy evaluate diagnostic guidelines used centre patients methods retrospective analysis done unselected series adult patients small bowel biopsies serum iga tissue transglutaminase antibody levels measured results iga tissue transglutaminase antibody cut greater upper limit normal sds positive predictive value cohort cases cut conclusion verified diagnosis reliably made high proportion adults based serology alone using iga tissue transglutaminase antibody method specified results add body evidence small bowel biopsy longer considered mandatory diagnosis basis results diagnostic guidelines centre modified copyright wolters kluwer health inc rights reserved
considering mislabeled milk products widely reported throughout world authentication food components one key issues food safety quality aim study use dna based methods investigate prevalence mislabeling among goat milk products consequently far ingredients matched labels study reveals high degree species mislabeling milk products underlining need enhance dairy traceability practices guarantee product authenticity provide reliable information consumers elsevier ltd rights reserved
background colorectal cancer crc one common cancers cancer locations involvement human papillomaviruses hpv suggested remains highly debated wide differences among reported prevalence hpv infection crcs aim determine actual prevalence high risk hpv large case control study methods crc specimens used analysis tumor distant healthy tissue nonmalignant control group samples sigmoid diverticulosis resections studied detection hpv hpv dna performed using real time polymerase chain reaction qpcr ten percent tumor samples also randomly subjected complete hpv genotyping using inno lipa technique results samples analyzed tumor samples crcs distant healthy tissue samples sigmoid samples hpv dna never amplified hpv amplified three times tumor tissues viral loads limit quantification new extraction tumor blocks samples revealed hpv qpcr inno lipa assays conclusion adequate procedures reliable techniques hpv detected largest case control study far bringing evidence absence involvement hpv crcs editrice gastroenterologica italiana published elsevier ltd rights reserved
rapid changes modern medicine along advances science learning memory necessitated shift way physician knowledge assessed physician recertification beyond initial certification historically consisted retaining large amounts knowledge long time span adult learning theory shown maintenance improvement knowledge base effective exposed new concepts regular intervals throughout one career reinforcing concepts ongoing basis philosophies spurred several american board medical specialties member boards embark variety continuous assessment models designed keep physicians date use new technologies innovative flexible question formats article describes new american board allergy immunology abai continuous assessment program abai departs traditional secure examination test center model embarks new pilot focus remains firmly rooted core competencies patients public demand deserve surveys abai laid groundwork initial program design asking diplomates rank relevant aspects sound clinical assessment periodic surveys follow enable abai adjust program design provide pertinent content practicing physicians improve patient care promote professionalism ensure public trust american academy allergy asthma immunology
background approximate string matching problem finding factors given text distance given pattern fixed length approximate string matching problem finding factors text length distance factor length pattern length exist bit vector techniques solve fixed length approximate string matching problem time space edit hamming distance models size computer word techniques independent distance threshold alphabet size fixed length approximate string matching generalisation approximate string matching hence numerous direct applications computational molecular biology elsewhere results present make available libflasm free open source software library solving fixed length approximate string matching edit hamming distance models moreover describe fixed length approximate string matching applied solve real problems incorporating libflasm established applications multiple circular sequence alignment well single structured motif extraction specifically describe used improve accuracy multiple circular sequence alignment terms inferred likelihood based phylogenies also describe used efficiently find motifs molecular sequences representing regulatory functional regions comparison performance library algorithms show competitive especially increasing distance thresholds conclusions fixed length approximate string matching generalisation classic approximate string matching problem present libflasm free open source software library solving fixed length approximate string matching extensive experimental results presented suggest applications could benefit using libflasm thus maintenance development libflasm desirable
background hepatocyte growth factor hgf initially discovered mitogen hepatocytes also known related carcinogenesis many organs however role hgf lung carcinogenesis fully understood study investigated role hgf lung carcinogenesis using hgf transgenic mice materials methods elucidate role hgf lung carcino genesis body weight diethylnitrosamine den administered intraperitoneally hgf transgenic mice wild type mice days age incidence number lung tumors expression hgf receptor met compared hgf mice results hgf overexpression accelerated den induced lung carcinogenesis seventy six percent mice versus mice developed malignant lung tumors weeks incidence lung tumors significantly higher mice comparison mice furthermore mean diameter number tumors mouse significantly higher mice compared mice northern blotting analyses revealed overexpression hgf trans gene lung tumors mice comparison surrounding non tumorous lesions western blotting analyses tumor lesions revealed increased phosphorylation met conclusion results suggest hgf promotes lung carcino genesis autocrine activation hgf met signaling pathway hgf met signaling pathway appears vital roles lung carcinogenesis
nature editorial entitled time epigenome trumpets appearance international human epigenome consortium likens biology equivalent large hadron collider strongly endorses viewpoint selective modifications marks dna histones constitute crucial codes life proposition hotly contested ptashne proposition reflects current mindset dna histone modifications prime movers gene regulation evolution claim perplexing since well characterized organisms drosophila melanogaster caenorhabditis elegans lack methylated dna marks dna methytransferase enzymology despite complete absence melanogaster nevertheless extensive gene regulatory networks drive sophisticated development gastrulation migration germ cells yield nervous system significant neural attributes stark contrast honey bee apis mellifera deploys human type dna methyltransferase enzymology mark dna sophisticated development roles therefore dna methylation playing different animals honey bee brings fresh perspective question combinatorial chemistry pheromones tergal cuticular exudates provide exquisite communication system thousands individuals development queen worker strictly controlled differential feeding royal jelly adult behaviors accompanied epigenomic changes interfaces different environments extensive allowing evaluation roles epigenomes behavior natural environment space weeks requisite levels experimental rigor elsevier inc rights reserved
ethnopharmacological relevance group important medicine plants boschniakia rossica cham schltdl fedtsch himalaica hook thorns two species genus boschniakia orobanchaceae long used traditional chinese medicine multiple therapeutic uses related enhanced renal function erectile dysfunction defaecate hepatoprotective additionally two species also used dietary supplements wine cosmetics healthy food aim review providing comprehensive information data genus boschniakia botany traditional medicinal uses phytochemistry pharmacological research toxicology review aims summary group natural compounds boschniakia discovered far aims reference research findings biological activities functions medicine physiology cell biology highlight compound candidates used drug discovery several pharmaceutical areas including antioxidation anticancer anti inflammation anti senile immunology materials methods available information rossica himalaica collected electronic resources pubmed scifinder scholar cnki tpl www theplantlist org google scholar baidu scholar web science results comprehensive analysis literatures available online sources results show species genus boschniakia valuable popular herbal medicines potentials cure various ailments phytochemical studies revealed chemical compositions genus mainly iridoid glycosides phenylpropanoid glycosides date compounds isolated genus crude extracts purified compounds found possess wide range biological activities including anti senile antitumor anticancer anti inflammatory protecting liver boost memory anti oxidation anti lipid peroxidative antiviral activities conclusions existing traditional uses genus boschniakia evaluated properties genus summarized based botany phytochemistry pharmacological research toxicology review aims introduce utilization application genus boschniakia modern drug discovery traditional medicinal plant utilization herbal species conservation development medicinal health maintaining products
compelling research past decade identified fundamental role intestinal microbiome human health compositional functional changes microbial ecosystem correlated variety human pathologies metagenomic resolution bioinformatic tools considerably improved allowing even strain level analysis however search microbial risk patterns human cohorts often confounded environmental factors medication host status disease relapse questioning prognostic therapeutic value currently available information addition better stratification human phenotypes implementation standardized protocols sampling analysis needed improve reproducibility comparability microbiome signatures meaningful taxonomic resolution level mechanistic understanding molecular integration pleiotropic signals coming complex dynamically changing ecosystem one biggest challenges field first successful attempts apply reverse genetics based available metagenomic information yielded identification small molecules metabolites functional relevance microbe host interactions expansion isolation bacteria unculturable biomass help characterize microbiome signatures model systems finally aiming development clinically relevant synthetic consortia safe functionally well defined strains conclusion beyond reasonable enthusiasm mechanistic implementation clinical relevance microbiome alterations disease susceptibility still infancy integration mentioned strategies help overcome correlation era microbiome research lead rational evaluation clinical strategies relevant targeted microbial intervention
arginine decarboxylase adc one enzymes responsible putrescine put biosynthesis shown implicated stress response current paper attempts made clone characterize gene encoding adc peach prunus persica batsch akatsuki rapid amplification cdna ends race gave rise full length adc cdna ppadc complete open reading frame encoding amino acid polypeptide homology search sequence multi alignment demonstrated deduced ppadc protein sequence shared high identity adcs plants including several highly conservative motifs amino acids southern blotting indicated ppadc existed peach genome single gene expression levels ppadc different tissues peach persica akatsuki spatially developmentally regulated treatment peach shoots mochizuki exogenous put indirect product adc remarkably induced accumulation ppadc mrna transcripts ppadc peach leaves mochizuki quickly induced either transiently continuously response dehydration high salinity nacl low temperature degrees heavy metal cdcl repressed high temperature degrees day treatment changed opposite direction stresses otherwise removed exception cdcl treatment addition steady state ppadc mrna could also transiently regulated abscisic acid aba mochizuki leaves taken together suggest ppadc stress responsive gene considered potential target genetically manipulated create novel germplasms enhanced stress tolerance future elsevier rights reserved
mutations connection rnase terminal reverse transcriptase domains hiv shown impact drug resistance inhibitors however impact context non subtypes poorly assessed study aimed characterize resistance related mutations terminal portions treatment failing patients southern brazil region endemic hiv subtype hiv viral rna isolated reverse transcribed infected subjects genomic regions analyzed polymerase chain reaction dna sequencing phylogenetic analysis two novel mutations evidenced brazilian hiv strains treatment failing patients global viral isolates subjects treatment selected hiv crf selected hiv subtype hiv terminal mutations described hiv also occur hiv work pinpointed novel mutations display subtype specific predominance occurrence
duck plaque virus dpv belongs family herpesviridae live attenuated vaccine way protect ducks dpv infection ineffectiveness vaccine one major causes dpv outbreaks field condition dpv well characterized pathogenicity molecular biology poultry present study discuss briefly biology dpv proteins different conditions temperature order evaluate infectivity adverse physical conditions results indicate dpv non infective degrees unstable degrees addition change salt concentrations significantly decreases stability dpv study useful estimating optimum storage condition dpv vaccines without causing deterioration viability effectiveness international alliance biological standardization published elsevier ltd rights reserved
background cotton gossypium spp world utilized textile fibre source important economically valuable crop worldwide understanding genomic variation tetraploid cotton species important exploitation excellent characteristics wild cotton improving diversity cotton breeding however discovery dna polymorphisms tetraploid cotton genomes lagged behind important crops results total reads specific length amplified fragment slaf tags highquality dna polymorphisms identified using specific length amplified fragment sequencing slaf seq including snps indels reference genome five tetraploid cotton species intriguingly gene ontology enrichment analysis revealed number significant terms related reproduction barbadense acc based new data sets reconstructed phylogenetic trees showed high concordance phylogeny diploid polyploid cottons large amount interspecific genetic variations identified validated single strand conformation polymorphism sscp method applied introgression genetics breeding hirsutum emian receptor species donors conclusions using slaf seq large number dna polymorphisms identified comprehensive analysis dna polymorphisms provided invaluable insights different tetraploid cotton species importantly identification numerous interspecific genetic variations provides basis practical future introgression breeding results presented herein provide valuable genomic resource new insights genetics breeding cotton
naturally occurring plasmids maintained mammalian cells among genomes gamma herpesviruses including epstein barr virus ebv kaposi sarcoma associated herpesvirus kshv cause multiple human malignancies two genomes replicated licensed manner using single viral protein cellular replication machinery passed daughter cells cell division despite lacking traditional centromeres much work done characterize replications plasmid genomes using methods southern blotting fluorescence situ hybridization fish methods limited though quantitative pcr southern blots provide information average number plasmids per cell population cells fish single cell assay reveals average number distribution plasmids per cell population cells static allowing information parent progeny examined cell describe method visualizing plasmids live cells method based binding fluorescently tagged lactose repressor protein multiple sites plasmid interest dna interest engineered include approximately tandem repeats lactose operator laco sequence laco specifically bound lactose repressor protein laci fused fluorescent protein fusion protein either expressed engineered plasmid introduced retroviral vector way dna molecules fluorescently tagged therefore become visible via fluorescence microscopy fusion protein blocked binding plasmid dna culturing cells presence iptg plasmids ready viewed system allows plasmids monitored living cells several generations revealing properties synthesis partitioning daughter cells ideal cells adherent easily transfected large nuclei technique used determine ebv derived plasmids synthesized generation newly synthesized plasmids partition faithfully daughter cells hela cells pairs ebv plasmids seen tethered associated sister chromatids synthesis phase seen separate sister chromatids separated anaphase method currently used study replication kshv genomes hela cells slk cells hela cells immortalized human epithelial cells slk cells immortalized human endothelial cells though slk cells originally derived kshv lesion neither hela slk cell line naturally harbors kshv genomes addition studying viral replication visualization technique used investigate effects addition removal mutation various dna sequence elements synthesis localization partitioning recombinant plasmid dnas
plasminogen major plasma protein zymogen broad spectrum protease plasmin plasmin activity leads tissue degradation direct activation metalloproteinases infected tooth root canals consequence inflammatory response eventual necrosis contain tissue fluid blood components coat root canal walls act conditioning films allow bacterial biofilms grow potential source hematogenously spreading bacteria investigated effect vitro surface conditioning human plasminogen initial adhesion bacteria four bacterial species salivarius faecalis naeslundii gordonii isolated dental root canals three oral streptococci oralis anginosus sanguinis grown albumin plasminogen coated flow chambers studied confocal laser scanning microscopy using cell viability staining live dead rrna fluorescence situ hybridization fish naeslundii salivarius particular gordonii showed higher initial adhesion plasminogen coated surfaces faecalis show preference plasminogen four species biofilms cultured showed streptococci increased proportion time experiments aimed studying different streptococcal strains adhered plasminogen coated surfaces albumin coated control surfaces specificity binding plasminogen verified blocking lysine binding sites epsilon aminocaproic acid plasminogen thus important plasma component initial adhesion oral bacteria particular streptococci binding may contribute spread locally well distant organs tissues elsevier ltd rights reserved
develop efficient genetic transformation system cryptomeria japonica japanese cedar present study evaluated effects culture support cultivation use beta lactam antibiotics meropenem carbenicillin eliminate agrobacterium transformation efficiency cultivation embryogenic tissues bacterium filter paper wicks prevented excess growth agrobacterium compared observed solid medium leading increased number gene transferred cells meropenem successfully eliminated bacterium low concentrations phytotoxic effect transformed tissues screened based kanamycin resistance green fluorescent protein gfp fluorescence integration transgene plantlet genome confirmed southern blotting successfully generated mean independent transgenic lines per gram embryogenic tissues using combination filter paper wicks meropenem transformation efficiency improved method approximately fold higher observed using conventional method
humans exposed perfluorinated alkyl acids pfaas food drinking water consumer products dust etc human metabolism excretion long chain pfaas slow half lives years studies suggest pfaas potential endocrine disrupting compounds might affect human health developed method extraction pfaas human serum simultaneous removal endogenous sex hormones developed method includes solid phase extraction liquid liquid extraction hplc fractionation weak anion exchange method validated extraction seven persistent pfaas spiked human male serum obtaining mean recoveries using estrogen receptor transactivation luciferase reporter gene assay analysis extracted pfaa serum fraction three pregnant women showed active endogenous hormones removed developed method documented extraction pfaas serum danish pregnant women pfaa fraction three samples significantly induced transactivity upon exposure natural ligand beta estradiol pfaa fractions caused significant increase induced transactivity conclusion developed method extract pfaas human serum method documentation suggested pfaas levels found human serum transactivate elsevier ltd rights reserved
background many parts old world domesticated camels genus camelus essential resource providing food labor commodities sport millions people three extent species two domesticated single humped dromedarius camelus dromedarius two humped bactrian camels camelus bactrianus one remains wild two humped wild bactrian camels camelus ferus three species possess variety adaptations harsh desert conditions including mechanisms tolerate extreme temperatures dehydration sandy terrain people residing harsh climate zones world benefitted raising camels terms draft milk meat hides wool centuries different breeds dromedary camels distributed various parts pakistan however scarcity research work camels pakistan identification novel link camel breeders fatal neurodegenerative disorders presence detect prion gene carried pakistan soil date prion diseases group fatal neurodegenerative disorders affect animals humans believed prions infectious agents responsible transmissible spongiform encephalopathies study report first study prion protein gene dromedary camels pakistan material methods results genes blueprint life determine functional aspects cellular mechanisms genomic dna enrolled blood samples extracted using nucleospin dna extraction kit genomic dna run agarose gel electrophoresis checked genomic dna quality amplified using prion region specific primer pair prion protein gene amplified individuals seven dromedary camel breeds province balochistan punjab pakistan samples required fragment size selected sent sequencing sanger sequencing sequences aligned multiple sequence alignment edited using codon code aligner explored phylogenetic analysis portion finally selected phylogenetic analysis dromedary camels pakistan different mammalian species drawn genbank revealed five different clades found nucleotide sequence similarities among dromedary camels germany dromedary camels iran dromedary camels pakistan observed deletion dromedary camels codon region except wild bactrian camels might causative factor prion protein gene resistance camels neighbor joining method bootstrap analysis replicates used draw phylogenetic tree discussion study documents presence prp polymorphisms shows relationship different camel breeds deletion previously examined prp allelic variation found segregate breeds however additional data necessary demonstrate prp genetic approach ideal future studies investigations necessary demonstrate prp genetic resistance camels utility techniques identifying prion genes selecting superior animals culling weak animals making parents next generation lead producing meat milk fewer animals well discussed slaughtering high prion incidence eliminate human animal fatal neurodegenerative disorders
substrate nanotopography shown potent modulator cell phenotype function dissect nanotopography modulation cell behavior large area nanopatterned substrate desirable enough cells cultured nanotopography subsequent biochemical molecular biology analyses however current nanofabrication techniques limitations generate highly defined nanopatterns large area herein present method expand nanopatterned substrates small highly defined nanopattern large area using stitch technique method combines multiple techniques involving soft lithography replicate poly dimethylsiloxane pdms molds well defined mold stitch technique assemble multiple pdms molds single large mold nanoimprinting generate master mold polystyrene substrates master mold produce pdms working substrates demonstrate nanotopographical modulation cell spreading method provides simple affordable yet versatile avenue generate well defined nanopatterns large areas potentially extended create micro nanoscale devices hybrid components
genetic analyses provide information human evolutionary history always gleaned sources evaluated evidence selective pressure due introduced infectious diseases genomes two indigenous southern african san groups double dagger khomani abundant contact people migrating region isolated vertical bar hoansi used dual approach test increased selection immune genes compared rest genome groups first calculated summary values statistics measure genomic signatures adaptation contrast selection signatures immune genes genes second located regions genome extreme values three selection statistics examined regions enrichment immune genes found stronger abundant signals selection immune genes double dagger khomani vertical bar hoansi confirm finding within population avoid effects different demographic histories two populations identified eight immune genes potentially targets strong selection double dagger khomani whereas juj hoansi immune genes found genomic regions strongest signals selection suggest abundant signatures selection immune genes double dagger khomani could explained frequent contact immigrant groups likely led increased exposure adaptation introduced infectious diseases
given strong selective pressures often faced populations colonizing novel habitat level variation present selection may act important indicator adaptive potential often discussed ecological context notion also highly relevant clinical understanding viral infection novel habitat new host thus quantifying factors determining levels variation considerable importance design improved treatment strategies focus quantification human cytomegalovirus hcmv virus transmitted across placenta resulting foetal infection potentially cause severe disease multiple organs recent studies using genomewide sequencing data demonstrated viral populations congenitally infected infants diverge rapidly time tissue compartments within individuals infants populations remain highly stable investigate underlying causes extreme differences observed intrahost levels variation estimating underlying demographic histories infection importantly reinfection population admixture appears important previously unappreciated player highlight illustrative examples likely represent single population transmission mother pregnancy multiple population transmissions pregnancy birth
hereditary fever syndromes hfs include group disorders characterized recurrent self limited episodes fever accompanied inflammatory manifestations occurring absence infection autoimmune reaction advances genetics hfs led identification new gene families pathways involved regulation inflammation innate immunity key role several cytokine networks pathogenesis hfs underlined several groups supported rapid response patients targeted cytokine blocking therapies due direct effect cytokine overproduction absence receptor antagonist resulting dysbalance downstream pro anti inflammatory cytokine networks aim study present overview discuss major concepts regarding cellular molecular immunology hfs particular focus specific cytokine signatures physiopathological implications based molecular cellular mechanisms hfs classified intrinsic extrinsic beta activation disorders inflammasomopathies protein misfolding disorders review integrates recent data updated classification hfs elsevier ltd rights reserved
objective preliminary study examines effects low dose light therapy also called photobiomodulation pbm therapy epithelial colony forming units ecfus epithelial cells skin mucosa assess potential contribute tissue regeneration also preliminary comparison basic pbm parameters wavelengths light sources dose evaluated promoting ecfus background data regenerative medicine brink exploiting tremendous potential offered advances stem cell biology two distinct aspects utilization stem cells either resident endogenous transplanted exogenous rely cells amenable expansion directed toward mature functional tissues despite major progress fundamental understanding stem cell pluripotency remain fundamental challenges applying insights clinical practice methods pbm treatments various devices wavelengths doses used two epithelial cell lines colony forming assays performed results study noted dose dependent effect laser increasing ecfus either terms size numbers comparisons different wavelengths light sources noted better efficacy collimated coherent lasers compared leds broad band light conclusions pbm therapy promotes expansion ecfus represent progenitors stem cell populations capable contributing tissue repair regeneration exploration precise mechanisms would allow optimization pbm clinical protocols harness regenerative potential stem cells wound healing clinical regenerative applications
lamellomphalus manusensis new genus new species described hydrothermal vent site manus back arc basin familial assignment based morphologies shell external anatomy new taxon superficially similar members peltospiridae mclean general shell shape differs peltospirids sex dimorphism presence copulatory organ lamellomphalus manusensis characterized possessing haliotiform shell degree coiling could considered intermediate form family neomphalidae mclean species regularly coiled shells cyathermia waren bouchet lacunoides waren bouchet planorbidella waren bouchet solutigyra waren bouchet limpet like shells neomphalus mclean symmetromphalus mcleah feature thus distinguishes new taxon neomphalids phylogenetic reconstruction based cytochrome oxidase gene coi also supports placement within neomphalidae
bacterial regulatory small rnas srnas play important roles gene regulation frequently connected expression virulence factors diverse bacteria srnas described pasteurellaceae pathogens depth analysis srnas described actinobacillus pleuropneumoniae causative agent porcine pleuropneumonia responsible considerable losses swine industry search srnas pleuropneumoniae developed strategy computational analysis bacterial genome using four algorithms different approaches followed experimental validation coding strand expression rna candidates confirmed northern blotting pcr rna sequencing among two likely riboswitches three housekeeping regulatory rnas two widely studied gcvb srnas putative novel trans acting srnas never described bacteria latter group several potential mrna targets many involved virulence stress resistance metabolism connect srnas complex gene regulatory network srnas identified well conserved among pasteurellaceae evolutionarily closer pleuropneumoniae share host results show combination newly developed computational programs successfully utilized discovery novel srnas indicate intricate system gene regulation srnas pleuropneumoniae pasteurellaceae thus providing clues novel aspects virulence explored studies
localization tail anchored proteins whose transmembrane domain resides extreme terminus presents major challenges cellular protein targeting machineries eukaryotic cells highly conserved atpase guided entry tail anchored protein get coordinates delivery proteins endoplasmic reticulum get uses atpase cycle drive fundamental process remains unclear establish quantitative framework get atpase cycle show atp specifically induces multiple conformational changes get culminate atpase activation tetramerization upstream downstream components actively regulate get atpase cycle ensure precise timing atp hydrolysis pathway get loading complex locks get atp bound state primes protein capture whereas substrate induces tetramerization get activates atpase reaction fold results establish precise model get harnesses energy atp drive membrane localization proteins illustrate dimerization activated nucleotide hydrolases regulate diverse cellular processes
dengue virus circulates four independent serotypes posing major public health threat around globe recent years frequent dengue outbreaks reported many parts world including india among four serotypes den least sampled studied serotype recent times reported cases den infections mostly known associate severe dengue past three decades one complete genome sequence den published india hence deficit information reference serotype would required deciphering association severe dengue study carried complete genome characterization den virus isolated dengue shock syndrome patient outbreak hyderabad south india phylogenetic analysis revealed circulation genotype lineage showed close relatedness reported virulent strains data also indicated unique amino acid substitutions known important virus replication epitope presentation first report complete genome characterization den south india may assist shaping genetic diversity circulating strains india
eastern oyster crassostrea virginica supported one largest fisheries eastern united states oyster populations reefs form suffered chronic long term decline throughout species range including northwest florida pensacola bay estuary system pbs guide efforts rebuild oyster populations pbs connectivity patterns evaluated among historic extant reef locations using integrated biophysical numerical model water quality parameters oyster recruitment monitored may monthly july july resultant salinity data used calibrate estuarine coastal ocean model based numerical circulation model pensacola bay coupled existing individual based oyster larvae routine predict ontogenetic larval distribution three dimensional lagrangian transport algorithms used simulate transport modeled larvae four day time periods summer autumn months oyster recruitment empirically recorded bay based outcomes contemporaneous sampling oyster larvae model shown represent salient features oyster larval distribution pensacola bay however instances incongruity modeled sampled outcomes indicating model outcomes validated field data must interpreted caution larval supply highly variable spatially complex potentially limiting successful recruitment reef replenishment larval transfer rates within among previously identified oyster reefs pensacola bay determined used predict optimal oyster reef restoration rehabilitation sites finally larval exports bay estimated considered within context larval exchange among north florida estuaries potential repercussions long term health gulf mexico oyster metapopulation
objective owing rapid increase clinical need aimed implement review performance mainstreaming model germline brca genetic testing eligible women high grade non mucinous epithelial ovarian cancer via genetic counselor embedded gynecology oncology clinic methods model implemented involved specialized referral form weekly genetics lead multidisciplinary review referrals pre post test genetic counseling provided embedded genetic counselor chemotherapy chair time performance outcomes retrospectively audited following two consecutive one year periods including survey data medical specialist comfort mainstreaming model results sixty four women underwent mainstreamed brca testing two year post implementation period rate detection brca pathogenic variants referral rate eligible women significantly increased patients receiving results first line chemotherapy genetic counseling time decreased min cancer specialists comfortable model conclusions mainstreaming model proved effective increasing uptake genetic testing eligible patients efficient patients genetic counselors cancer specialists acceptable cancer specialists facilitated location genetic oncology service delivery separation clinical responsibility genetic testing specialist genetics service ensuring accurate robust patient centred care elsevier inc rights reserved
background anterior encephalocele rare congenital anomaly central nervous system thought associated genetic defects folate metabolism methods case control study investigated interactions methylenetetrahydrofolate dehydrogenase mthfd methylenetetrahydrofolate reductase mthfr polymorphisms risk northeast indian population total cases controls investigated using polymerase chain reaction restriction fragment length polymorphism technique results mthfr significantly associated risk odds ratio mthfr haplotypes conferred risk progressive manner associated disease susceptibility children genotypes increased risk compared reference genotype children genotypes also elevated risk mthfd polymorphism together mthfr haplotypes elevated risk progressive manner chi conclusion data support hypothesis gene gene interaction mthfd mthfr risk together mthfr haplotypes mthfd elevates risk progressive manner minor allelic frequencies mthfd mthfr populations similar reported southeast asian population suggesting possible explanation prevalence malformation regions wiley periodicals inc
introduction article gives overview drug metabolism disposition adme characteristics common non rodent species used toxicity testing drugs minipigs dogs monkeys compares human characteristics regard enzymes mediating metabolism drugs transport proteins contribute absorption distribution excretion drugs methods literature adme regulatory guidelines relevance drug development small molecules gathered results non human primates monkeys species closest humans terms genetic homology dogs advantage due ready availability comprehensive background data toxicological safety assessment dogs easy handle pigs used less dogs monkeys model safety assessment drug candidates however drug candidate metabolised aldehyde oxidase aox acetyltransferases nat nat cytochrome cypc like enzymes expressed dogs present pigs species may better choice dogs provided adequate exposure obtained pigs conversely pigsmight right choice sulfation involving phosphoadenosyl phosphosulphate sulphotransferase paps important pathway human metabolism drug candidate discussion general species selection based comparison vitro studies human cell based systems animal cell based systems results pharmacokinetic studies also important decision making establishing obtainable exposure level species access genetically humanized mouse models highly sensitive analytical methods accelerator mass spectrometry makes possible improve chance finding metabolites relevant humans clinical trials initiated necessary include another animal species long term toxicity studies initiated conclusion safety testing optimized applying knowledge species adme differences utilising advanced analytical techniques elsevier inc rights reserved
mass spectrometry based proteomics powerful tool identifying hundreds thousands posttranslational modifications complex mixtures however remains enormously challenging simultaneously assess intrinsic catalytic efficiencies cat modifications context natural interactors fundamental enzymological constants key determining substrate specificity establishing timing importance cellular signaling report use selected reaction monitoring srm tracking proteolysis induced human apoptotic caspases lysates living cells following appearance cleaved peptides lysate function time able determine hundreds catalytic efficiencies parallel remarkably find rates substrate hydrolysis individual caspases vary greater fold indicating sequential process moreover rank order substrate cutting similar apoptotic cells suggesting cellular structures dramatically alter substrate accessibility comparisons extrinsic trail intrinsic staurosporine inducers apoptosis revealed similar substrate profiles suggesting final proteolytic demolitions proceed similarly ordered plans certain biological processes rapidly targeted caspases including multiple components endocyotic pathway mirna processing machinery believe massively parallel quantitative label free approach obtaining basic enzymological constants facilitate study proteolysis posttranslational modifications complex mixtures
background thermophilic filamentous fungus myceliophthora thermophila many suitable characteristics industrial biotechnology could promising new chassis system synthetic biology particularly atcc strain whose genome sequenced however metabolic engineering strain using genetic approaches reported owing lack genetic tools organism results present study developed high efficiency agrobacterium tumefaciens mediated transformation system thermophila including approach targeted gene deletion using green fluorescence protein gfp marker selection transformants per conidia obtained one transformation plate moreover deletion mutant constructed atcc background using tools developed present study subsequently characterized deletion construct designed using resistance phosphinothricin selection marker additionally gfp encoding cassette incorporated allowed selection site specific fluorescence ectopic fluorescence integration construct transformants ectopically integrated deletion constructs therefore identified using fluorescent signal gfp pcr southern blotting analyses non fluorescent putative deletion transformants revealed tested transformants correct deletions deletion frequency pool transformants analyzed moreover homologous rate improved folds mutant using pyrg test gene disrupt thermophila conclusions successfully developed efficient transformation target gene disruption approach thermophila atcc mediated tumefaciens tools deletion strain developed advance development thermophila industrial host metabolic engineering accelerate elucidation mechanism rapid cellulose degradation thermophilic fungus
background reports revealed rapamycin could reactivate hbv infection however mechanism clearly explained objectives report studied mechanism rapamycin enhances hbv replication expression inducing cellular autophagy materials methods hepg cells treated rapamycin induce autophagy autophagosomes observed fluorescence microscopy transmission electron microscopy autophagy marker protein detected western blotting hbv dna mrna determined real time pcr southern blotting hbsag evaluated elisa results hepg cells hbv dna hbsag increased host cells treated rapamycin effect reversed autophagy inhibitor methyladenine conclusions results indicated potential explanation reactivation hbv infection patients hepatitis receive rapamycin
present investigation conducted first determine whether correlation exists vegf mrna levels clinicopathological parameters assess prognostic value bladder cancer clarify expression level biological significance vegf isoforms total rna isolated specimens bladder cancer northern blot analysis revealed vegf mrna expressed either normal urothelium bladder cancer detected three vegf transcripts length respectively vegf transcript levels greater cancer tissues normal urothelium significantly higher pta urothelial tumors thus correlated pathologic stage contrary transcript elevated expression transcripts correlated histologic grade presence carcinoma situ patients higher vegf mrna levels significantly shorter survival without progression compared lower levels three vegf splice variants detected southern blotting namely vegf expression intensity isoform evaluated quantitative real time pcr new fresh frozen recent tumors vegf vegf expressed similar level contrary significantly expressed vegf three isoforms higher expressed bladder cancers pta tumors significant correlation increased expression level vegf histological grade lesion conclude vegf mrna level potential prognostic indicator progression bladder cancer well expression level different vegf splice variants
activity dependent changes synapses rely functional changes resident proteins gene expression addressed relationship synapse activity expression synaptic genes comparing rna levels neocortex normal mice versus secretion deficient therefore synaptically silent munc mammalian homologue caenorhabditis elegans uncoordinated locomotion null mutants using microarray expression analysis real time quantitative pcr northern blotting hypothesized genes control synaptic activity would differentially expressed mutants controls found synaptic genes differentially expressed however neuropeptide genes detectable expression microarray differentially expressed expressed fold higher control cortex several secreted proteins also differentially expressed genes encoding receptors many synaptic components differential expression confirmed real time quantitative pcr analysis situ hybridization indicated difference neuropeptide expression uniform due loss specific cells mutant primary sensory neurons depend synaptic activity input differential expression neuropeptides observed data argue general relationship activity synapses expression resident proteins suggest link secretion expression genes encoding secreted products
experimental probes acidity weak carbon acids developed used determine carbon acid glycine glycine derivatives iminium ion adducts glycine carbonyl group including deoxypyridoxal dpl high reactivity dpl stabilized glycyl carbanion towards nucleophilic addition dpl glycine dpl iminium ion favors formation claisen condensation products enzyme active sites formation iminium ion glycine dpl accompanied unit decrease glycine complicated effects formation glycine iminium ions dpl aromatic aliphatic aldehydes ketones carbon acid discussed data provide insight contribution individual pyridine ring substituents catalytic efficiency dpl suggested phosphodianion group plp may play important role enzymatic catalysis carbon deprotonation providing kcal mol binding energy utilized stabilize transition state enzymatic reaction article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
ability rapidly detect characterize drug metabolites biological fluids often relies combination high quality chromatographic separation sensitive high resolution mass spectrometry performance two high throughput approaches namely monolith columns sub particle ultra performance liquid chromatography uplc columns compared detection identification human metabolites acetaminophen urine uplc system produced approximately three times sensitivity detected metabolites monolithic column approach sharp peaks produced uplc seem particularly advantageous coupled electrospray mass spectrometry apparently reducing ion suppression leading superior sensitivity hence lower limits detection elsevier rights reserved
since discovery middle east respiratory syndrome coronavirus mers cov novel betacoronavirus first isolated characterized mers cov real time reverse transcriptase polymerase chain reaction rrt pcr assays represent one rapidly expanding commercial tests however absence extensive evaluations assays positive clinical material different sources evaluating diagnostic effectiveness remains challenging describe diagnostic performance evaluation common commercial mers cov rrt pcr assays large panel upper respiratory tract specimens collected outbreak episode saudi arabia assays compared realstar mers cov pcr alton diagnostics hamburg germany assay gold standard results showed tib molbiol lightmix upe orfl assays tib molbiol berlin germany sensitive followed anyplex seegene mers cov assay seegene seoul korea finally iii primerdesign genesig hcov assay primerdesign england united kingdom also evaluate modified protocol primerdesign genesig hcov assay elsevier inc rights reserved
identification antigenic epitope immune system allows understanding protective mechanism neutralizing antibodies may facilitate development vaccines peptide drugs peptide scanning simple efficient method straightforwardly maps linear epitope recognized monoclonal antibody mab authors present epitope determination methodology involving serially truncated recombinant proteins synthetic peptide design dot blot hybridization antigenic recognition nervous necrosis virus coat protein using neutralizing mab technique relies dot blot hybridization synthetic peptides mabs polyvinylidene fluoride pvdf membrane minimum antigenic region viral coat protein recognized mab narrowed step step trimmed peptide mapping onto mer peptide epitope addition alanine scanning mutagenesis residue substitution performed characterize binding significance amino acid residue making epitope residues flanking epitope site found play critical roles peptide conformation regulation identified epitope peptide may used form crystals epitope peptide antibody complexes ray diffraction study functional competition therapeutics
present study examines indian publications migraine research covered scopus database experiencing annual growth rate citation impact per paper international collaborative publication share global publication share global publications share migraine came several countries top productive countries accounted share global publications output large number indian organizations authors participated indian research migraine research top organizations authors contributed publications share citation share respectively indian output citations medicine among subjects contributed largest publications followed pharmacology toxicology pharmaceutics neurosciences biochemistry genetics molecular biology chemistry indian publications migraine research appeared several journals top journals contributed share india output top highly cited papers registered citations together contributed citations leading average citation per paper concludes urgent need frame national policy area undertake recognize migraine research public health problem allocate healthcare funds area
chronic myeloid leukemia cml myeloproliferative disease characteristic bcr abl tyrosine kinase fusion protein despite clinical efficacy accomplished tkis therapies disease progression may affect patient response rate inhibitors due multitude factors could lead development mechanism known multidrug resistance mdr ketocholesterol oxidized cholesterol derivative extensively reported cause cell death variety cancer models study showed vitro efficacy mdr leukemia cell line lucena treatment induced reduction cell viability together apoptosis mediated cell death moreover downregulation mdr protein caused intracellular drug accumulation incubation either daunorubicin vincristine reduced cell viability compared use drug alone additionally quantitative label free mass spectrometry based protein quantification showed alteration different molecular pathways involved cell cycle arrest induction apoptosis misfolded protein response conclusively study highlights effect sensitizing agent multi drug resistance cml elucidates molecular mechanisms significance cml patients treated tyrosine kinase inhibitors tkis showed year estimated overall survival cumulative complete cytogenetic response however development drug resistance common feature disease progression study aimed showing effect cytotoxic sensitizing agent multidrug resistance cml cell lines cellular molecular basis compound elucidated using comprehensive strategy based quantitative proteomic cell biology assays showed induced cell death overcomes drug resistance cml mechanisms beyond classical mdr pathways elsevier rights reserved
protein plays crucial role regulation cellular responses diverse stresses thus major priority cell biology define mechanisms regulate activity response stresses maintain basal levels normal conditions moreover investigation required establish whether rna participates regulating interaction proteins conducting systematic experiments discovered interactor hnrnpc directly binds destabilizes prevents activation normal conditions upon doxorubicin treatment lncrna snhg retained nucleus binding nucleolin competes hnrnpc binding upregulates levels promotes dependent apoptosis impairing hnrnpc regulation activity results indicate balance lncrna snhg hnrnpc regulates activity dependent apoptosis upon doxorubicin treatment indicate change lncrna subcellular localization specific circumstances biologically significant
literature data summarized cholinesterases mammals arthropods group isomer derivatives alkaloid lupinin epimer epilupinin substrates cholinesterases mammals studied acetates containing molecule chinolysidin bicycle different structure alkyl radical showed certain elements action specificity isomer esters derivatives protonated base lupinin epilupinin differences revealed substrate characteristics polyenzyme analysis anticholinesterase efficiency performed organophosphorus inhibitors dialcoxyphosphorus derivatives lupinin epilupinin result managed find quite peculiarities action depending structure several tested compounds revealed specific inhibitors cholinesterases several mammals arthropods
discovery multiple roles mitochondria endoplasmic reticulum juxtaposition cell biology often relied upon exploitation mitofusin mfn mitochondria tether however established mfn function recently questioned calling critical evaluation mfn role mitochondria cross talk electron microscopy fluorescence based probes organelle proximity confirmed mitochondria juxtaposition reduced constitutive acute mfn deletion functionally mitochondrial uptake released reduced following acute mfn ablation well mfn cells overexpressing mitochondrial calcium uniporter mitochondrial uptake rate extent normal isolated mfn liver mitochondria consistent finding acute chronic mfn ablation overexpression alter mitochondrial calcium uniporter complex component levels hence mfn stands bona fide mitochondria tether whose ablation decreases interorganellar juxtaposition communication
mirnas non coding rna molecules typically nucleotides long suppress expression target genes several laboratories attempted identify mirnas pig involved salmonella infection bioinformatics strategies using newly available genomic sequence generally successful report silico identification mirnas pig focusing salmonella infection pathway investigated differential expression mirnas quantitative real time pcr pre post natal stage salmonella inoculation peripheral blood commercially breed pigs identified mirnas predicted targets salmonella infection pathway nine yet described pig addition expression nine selected mirnas validated peripheral blood northern blotting expression analyses differences found pre post natal stages salmonella inoculation mir mir mir suppressed days salmonella inoculation predicted targets three mirnas validated luciferase reporter assays show fos direct target mir mir suppress mapk mir target ifng findings helpful understanding function processing mirnas salmonella infection mirna differentially expressed peripheral blood commercial breed pigs suggest used genetic markers salmonella infection resistance pigs
high grade osteosarcomas common primary malignant tumors bone complete surgical resection multi agent chemotherapy patients high grade osteosarcomas localized extremity tumors become long term survivors prognosis however poor patients nonresectable primary metastatic relapsed disease outcome essentially unchanged three decades herein describe selected novel insights genomics biology immunology disease discuss selected strategies hold promise overcome current stagnation therapeutic success childhood osteosarcoma
adenosine triphosphate binding cassette proteins constitute large family active transporters extracellular intracellular membranes increased drug efflux based adenosine triphosphate binding cassette protein activity related development cancer cell chemoresistance several articles focused adenosine triphosphate binding cassette gene expression profiles signatures based expression human adenosine triphosphate binding cassette genes individual tumor types reported connections established clinicopathological features aim study test theory existence adenosine triphosphate binding cassette gene expression profiles common multiple types tumors may modify tumor progression provide clinically relevant information general adenosine triphosphate binding cassette profiles could constitute new attribute carcinogenesis combined cohort consisted tissues cancer patients breast colorectal pancreatic carcinomas standard protocols rna isolation quantitative real time polymerase chain reaction followed gene expression data individual tumor types well merged tumor dataset analyzed bioinformatics tools several general adenosine triphosphate binding cassette profiles differences gene functions established shown significant relations clinicopathological features tumor size histological grade clinical stage genes abcc prevailed among upregulated downregulated ones conclusion results supported theory general adenosine triphosphate binding cassette gene expression profiles importance cancer clinical well research levels presence abcc official symbol cftr among genes key roles profiles supports emerging evidence crucial role various cancers
endocytosis key process internalization extracellular materials plasma membrane proteins receptors transporters thereby controlling many aspects cell signaling cellular homeostasis endocytosis plants essential role basic cellular functions also growth development nutrient delivery toxin avoidance pathogen defense precise mechanisms endocytosis plants remain quite elusive lack direct visualization examination single events endocytosis greatly hampered ability precisely monitor cell surface lifetime recruitment profile proteins driving endocytosis endocytosed cargos plants discuss necessity systematically implement total internal reflection fluorescence microcopy tirf plant cell biology community present reliable protocols high spatial temporal imaging endocytosis plants using clathrin mediated endocytosis test case since represents major route internalization cell surface proteins plants developed robust method directly visualize cell surface proteins using tirf microscopy combined high throughput automated unbiased analysis pipeline determine temporal recruitment profile proteins single sites endocytosis using departure clathrin physiological reference scission using departure assay assessed recruitment two different subunits alpha sites endocytosis found apa recruited concert clathrin apm validated approach therefore offers powerful solution better characterize plant endocytic machinery dynamics one favorite cargo protein
aims hypothesis adipokine adiponectin insulin sensitising anti atherogenic anti inflammatory properties recently genes mouse human adiponectin receptor adipor adipor cloned aim study investigate whether genetic variants genes encoding adipor adipor play role human metabolism materials methods screened adipor adipor polymorphisms determined association glucose metabolism lipid metabolism atherogenic lipid profile inflammatory markers non diabetic subjects subgroup participated longitudinal study subjects received diet counselling increased physical activity results identified six variants adipor seven variants adipor single nucleotide polymorphism snp putative promoter region upstream translational start codon adipor frequency allele almost complete linkage disequilibrium another snp intron subjects carrying alleles lower insulin sensitivity estimated ogtt determined euglycaemic clamp also higher hba levels although difference statistically significant higher liver fat determined proton magnetic resonance spectroscopy values adjusted age sex percentage body fat longitudinal study alleles associated lower insulin sensitivity higher liver fat follow compared alleles independently basal measurements sex baseline follow percentage body fat conclusions interpretation present findings suggest snp promoter snp intron adipor may affect insulin sensitivity liver fat humans
lab chip miniaturized systems able perform biomolecular analysis shorter time lower reagent consumption standard laboratory miniaturization interferes multiple functions biochemical procedures require order address issue paper presents first time integration single glass substrate different thin film technologies order develop multifunctional platform suitable chip thermal treatments chip detection biomolecules proposed system glass hosts thin metal films acting heating sources hydrogenated amorphous silicon diodes acting temperature sensors monitor temperature distribution photosensors chip detection ground plane ensuring heater operation affect photodiode currents sequence technological steps deposition temperatures thin films parameters photolithographic processes optimized order overcome issues technological integration device designed fabricated tested implementation dna amplification polymerase chain reaction pcr thermal cycling among three different temperatures single site glass connected electronic system drives heaters controls temperature light sensors optically thermally coupled another glass hosting microfluidic network made polydimethylsiloxane includes thermally actuated microvalves pcr process chamber successful dna amplification verified chip using standard fluorometer elsevier rights reserved
report expression mouse mpped telencephalon embryonic stages adulthood using northern blotting analysis rna situ hybridization ish data show mpped specifically expressed brain enriched cortical plate developing telencephalon postnatally expression mpped reduced cerebral cortex relative levels embryonic dorsal telencephalon also mpped expression sustained hippocampal region examination expression mpped cortical layer markers ish malformed beta catenin null dorsal telencephalon show mpped cux ror beta expressing superficial cortical layers reduced form patchy patterns tbr expressing deep layer neurons incorrectly located superficial layers indicative migration defect cortical neurons absence beta catenin developmental dynamics wiley liss inc
background thyroglobulin stored thyroid follicles regulates follicular function thyroid hormone synthesis suppressing thyroid specific gene expression concentration dependent manner thus intrinsic negative feedback regulator restrain effect thyrotropin tsh follicle however underlying mechanisms exerts prominent autoregulatory effect following recognition thyrocytes remains unclear methods order identify potential proteins recognize interact mass spectrometry used analyze immunoprecipitated bound proteins derived treated rat thyroid frtl cells results flotillin flotillin two homologs integral membrane proteins lipid rafts identified novel binding proteins high confidence studies revealed flotillins physically interact endocytosed together proteins redistribute fromthe cell membrane cytoplasmic vesicles treatment lipid raft disruptermethyl beta cyclodextrin abolished endocytosis negative feedback effect thyroid specific gene expression meanwhile sirna mediated knockdown flotillin flotillin also significantly inhibited effects gene expression conclusion together results indicate flotillin containing lipid rafts essential follicular recognized thyrocytes exert negative feedback effects thyroid
enolase gene usually expressed mature neurons also named neuron specific enolase nse present study first obtained nse gene cdna sequence using race method based expressed sequence tag est fragment cdna library gekko japonicus identified one transcript central nervous system gekko japonicus northern blotting open reading frame nse encodes amino acid protein investigated multi tissue expression pattern nse pcr found expression nse mrna high brain spinal cord low heart detectable tissues real time quantitative pcr used investigate time dependent change expression nse mrna level gecko spinal cord transection found significantly increased one day reaching highest level three days post injury decreasing seventh day experiment recombinant plasmid pet nse constructed induced express fused nse protein purified nse protein used immunize rabbits generate polyclonal antisera titer antiserum determined elisa western blotting showed prepared antibody could specifically recognize recombinant endogenous nse protein result immunohistochemistry revealed positive signals present neurons brain spinal cord study provided tools cdna polyclonal antibody studying nse function gekko japonicus
multi functional cellulase gene mfc ampullaria crossean transformed volvariella volvacea peg mediated protoplast transformation improve biological efficiency fruiting body yield pcr southern blotting indicated mfc integrated genomes four transformants laboratory large scale cultivation experiments average biological efficiency transformants respectively considerably higher corresponding values untransformed controls first report improvement biological efficiency fruiting body yield volvacea transgenesis elsevier ltd rights reserved
structure transition state analogue alf gdp complexed alpha small protein heralded new field research structure mechanism enzymes manipulate transfer phosphoryl groups number enzyme structures pdb containing metal fluorides mfx ligands imitate either phosphoryl phosphate group end fall three distinct geometrical classes tetrahedral complexes based bef mimic ground state phosphates octahedral complexes primarily based alf mimic line anionic transition states phosphoryl transfer trigonal bipyramidal complexes represented mgf putative alf moieties mimic geometry transition state interpretation structures provides deeper mechanistic understanding behavior manipulation phosphate monoesters molecular biology review provides comprehensive overview structures uses computational development
background therapeutic options pain management restricted patients nonsteroidal anti inflammatory drug nsaid induced nsaid exacerbated urticaria strong cyclooxygenase cox inhibiting nsaid used alternative nsaid weak cox inhibitors selective cox inhibitors sometimes sufficiently effective potentially troublesome adverse effects objective date prophylactic premedication antihistamines rarely practiced patients concurrently suffering recurrent pain nsaid associated urticaria data analysis aims clarify whether prophylactic premedication intake nsaid effective safe practicable methods data patients nsaid induced nsaid exacerbated urticaria underwent single dose nsaid provocation minutes premedication desloratadine retrospectively evaluated results antihistamine premedication patients tolerated single dose provocation tests strong cox inhibitors tests weak cox inhibitors despite antihistamine premedication patients developed acute urticaria intake ibuprofen another patients acute urticaria intake ibuprofen tolerated ibuprofen paracetamol respectively conclusions clinical relevance majority patients nsaid induced nsaid exacerbated urticaria concurrently suffering intermittent pain premedication regimen desloratadine minutes intake strong cox inhibitor seems effective safe practicable american academy allergy asthma immunology
complement system major component immune defense activation complement cascade foreign substances altered self structures may lead elimination activating agent enzymatic cascade several biologically active fragments generated immune regulatory effects complement mediated activation products central component indispensable role opsonic phagocytosis well regulation humoral immune response known long involvement complement cell biology revealed past years review discuss immune modulatory functions derived fragments focusing role processes summarized far importance locally synthesized complement receive special emphasis several immunological processes take place tissues hepatocyte derived complement components might available high concentrations also aim call attention important differences human mouse systems regarding mediated processes
nitrile converting enzymes including nitrilase nitrile hydratase nhase received increasing attention researchers industrial biocatalysis critical role tool organic synthesis carboxylic acids amides nitriles date bioconversion approaches considered one potential industrial processes using resting cells purified enzymes catalysts production food additives pharmaceutical agrochemical precursors review focuses distribution catalytic mechanism research nitrile converting enzymes recent years molecular biology aspects improve biocatalytic performance microbial nitrilase nhase demonstrated process developments microbial nitrilase nhase organic synthesis also discussed
order monitor possibility horizontal gene transfer transgenic rice microorganisms paddy rice field gene flow bifunctional fusion tpsp rice containing trehalose phosphate synthase phosphatase microorganisms soils investigated soil samples collected paddy rice field june march investigated multiplex pcr southern hybridization amplified fragment length polymorphism aflp tpsp gene soil genomic dnas detected pcr soil genomic dnas show homologies southern blotting data indicating gene transfer occur last two years paddy rice field addition aflp band patterns produced soil genomic dnas transgenic non transgenic rice fields appeared similar analyzed ntsyspc program thus data suggest transgenic rice give significant impact communities soil microorganisms although long term observation may needed
astragaloside active component astragalus membranaceus exhibits diverse biological roles including antitumor activity study evaluated chemosensitive role astragaloside non small cell lung cancer cells cell counting kit analysis performed determine cell viability real time polymerase chain reaction western blot used measure messenger rna protein expression results showed astragaloside treatment could suppress proliferation non small cell lung cancer cells addition combined treatment astragaloside remarkably enhanced chemosensitivity gefitinib three non small cell lung cancer cell lines including nci hcc furthermore compared gefitinib treated cells messenger rna expression sirt obviously increased non small cell lung cancer cells treated gefitinib combined astragaloside addition downregulation sirt accomplished using small interference rna technology result sirt inhibition abolished sensitization role astragaloside non small cell lung cancer cells taken together data demonstrated astragaloside sensitized tumor cells gefitinib via regulation sirt suggesting astragaloside may serve potential therapeutic approach lung cancer
saxifragifolin traditional chinese medicine pentacyclic triterpenoid compound first isolated androsace umbellata various plant triterpenoids reported exhibit antitubercular activity study thp derived macrophages infected attenuated tuberculosis strain hra intracellular replication evaluated counting colonies weeks incubation results indicated treatment reduced intracellular replication thp derived macrophages cells performed phagosome maturation test using confocal microscopy found treatment partially attenuated phagosome arrest induced infection effects dependent vps associated pathway immunoprecipitation assays showed increased intracellular uvrag linked vps active vps complex however effect total vps pool moreover results indicated mediated increase vps complex activity mediated ampk dependent pathway collectively data indicate may promising candidate treatment
human immunodeficiency virus hiv infection humans represents complex biological system great challenge public health novel approaches analysis prediction infection dynamics based multi scale integration virus ontogeny immune reactions needed deal systems complexity aim study formulate multi scale mathematical model hiv infection implement model computationally following hybrid approach calibrate model estimating parameter values enabling one reproduce standard observed dynamics hiv infection blood acute phase primary infection modeling approach integrates processes infection spread immune responses lymph nodes observed blood spatio temporal population dynamics lymphocytes response hiv infection governed equations linking intracellular regulation lymphocyte fate intercellular cytokine fields describe balance proliferation differentiation death single cell level consequence gene activation via multiple signaling pathways activated ifna fasl distinct activation thresholds used model relate different modes cellular responses hierarchy relative levels cytokines specify reference set model parameter values fundamental processes lymph nodes ensures reasonable agreement viral load cell dynamics blood
neurodegenerative diseases affect neurons human brain decline neural activities causing neurocognitive dysfunctions brain behavioral disorders intensive immunotherapy used alter course multiple sclerosis common form neurodegeneration controlling oxidative stress recovering mitochondrial injury rehabilitating channelopathy dysfunctions however little known epigenetic factors regulate atrophy genesis hippocampal region prevents neurodegeneration traumatic brain injury leads neurodegeneration however onset later yet successfully monitored simultaneously discrimination neurodegeneration due ageing traumatic brain injury addressed existing literature therefore present different forms traumatic brain injury trigger neurotoxicity leading classification onset stage neurodegenerative pathways discuss immune system orchestrates changes neurogenesis presence physiological stimuli view epigenetic mode treatment successfully intervenes forms neurodegenerative disease ageing traumatic condition establish cross talk epigenetic factors neural immunology balance oxidative stress hippocampal regions
acetochlor chloro ethoxymethyl ethyl methyl phenyl acetamide alachlor methoxymethyl chloro diethyl phenyl acetamide butachlor butoxymethyl chloro diethyl phenyl acetamide metolachlor chloro ethyl methylphenyl methoxy methylethyl acetamide pre emergent herbicides used production agricultural crops herbicides carcinogenic rats acetochlor alachlor cause tumors nasal turbinates butachlor causes stomach tumors metolachlor causes liver tumors suggested carcinogenicity compounds involves complex metabolic activation pathway leading dna reactive dialkylbenzoquinone imine important intermediates pathway chloro methyl diethylphenyl acetamide cdepa produced alachlor butachlor chloro methyl ethylphenyl acetamide cmepa produced acetochlor metolachlor subsequent metabolism cdepa cmepa produces diethylaniline dea methyl ethylaniline mea bioactivated para hydroxylation subsequent oxidation proposed carcinogenic product dialkylbenzoquinone imine current study extends earlier studies alachlor demonstrates rat liver microsomes metabolize acetochlor metolachlor cmepa nmol min nmol min respectively whereas human liver microsomes metabolize acetochlor cmepa nmol min butachlor metabolized cdepa much greater extent rat liver microsomes nmol min human liver microsomes nmol min determined rat human livers metabolize cmepa mea nmol min nmol min respectively cdepa dea nmol min nmol min respectively shown rat human liver microsomes metabolize mea nmol min nmol min respectively dea nmol min nmol min respectively also shown cytochrome isoforms responsible human metabolism acetochlor butachlor metolachlor cypa cypb
voltage gated calcium channels serve dual roles cell depolarize membrane potential electrical excitability activate transient cytoplasmic signals animals channels play crucial roles including driving muscle contraction excitation contraction coupling gene expression excitation transcriptioncoupling pre synaptic neuroendocrine exocytosis excitation secretion coupling regulation flagellar ciliary beating regulation cellular excitability either directly modulation sensitive ion channels recent years genome sequencing provided significant insights molecular evolution channels furthermore expanded gene datasets permitted improved inference species phylogeny base metazoa providing clearer insights evolution complex animal traits involve channels including nervous system various types metazoan channels key properties determine cellular contribution include ion selectivity pore gating importantly cytoplasmic protein protein interactions direct sub cellular localization functional complexing unclear defining features many essential nervous system function evolved review highlight experimental observations implicate channels physiology behavior early diverging animals phyla cnidaria placozoa porifera ctenophora given limited understanding molecular biology channels basal animal lineages infer insights better studied vertebrate invertebrate animals also highlight apparently conserved cellular functions channels might emerged early metazoan evolution perhaps predated
aimed identify whether use autologous hematopoietic cell transplantation hct impacts outcomes multiple myeloma patients gains chromosome retrospectively identified patients patients overall response rate induction havingvgpr achieving similar non patients median pfs diagnosis years reached years yrs without median diagnosis years reached respectively molecular analysis using foundation one heme assay common mutations seen patients included kras overall gain portends worse pfs negated auto hct patients likely require additional therapy improve survival
familial mediterranean fever fmf caused mutations within mediterranean fever mefv gene gain function mutations lead increased activation inflammasome pyrin subsequent disproportional proinflammatory reaction classically fmf patients two pathogenic mutations affecting alleles found molecular genetic analysis however well known phenotype also caused either mutations lower penetrance unknown significance furthermore significant number patients one even mefv mutations detected heterozygous mutation carriers suffer classical fmf also present signs inflammation subclinical increased inflammation markers associated inflammatory diseases unclassified symptoms thus fmf follow classical autosomal recessive inheritance variable gene dose effect considered furthermore modulated mostly unknown genetic variants environmental factors article summarizes broad spectrum clinical presentations associated mefv mutations analyzes effect gene dose phenotypical expression furthermore impact molecular genetic analysis diagnostics patient individualized management disease discussed
live cell imaging used simultaneously capture time lapse images angiotensin type receptors atar intracellular compartments transfected human embryonic kidney hek cells following stimulation angiotensin ang hek cells transiently transfected plasmid dna containing tagged enhanced green fluorescent protein egfp lysosomes identified red fluorescent dye live cell images captured laser scanning confocal microscope ang stimulation analyzed software three dimensions voxels time live cell imaging enables investigations receptor trafficking avoids confounds associated fixation particular loss artefactual displacement egfp tagged membrane receptors thus individual cells tracked time subcellular localization receptors imaged measured images must acquired sufficiently rapidly capture rapid vesicle movement yet faster imaging speeds number photons collected reduced compromises must also made selection imaging parameters like voxel size order gain imaging speed significant applications live cell imaging study protein trafficking migration proliferation cell cycle apoptosis autophagy protein protein interaction dynamics name
water oil microemulsions composed virgin olive oil continuous oil phase mixture lecithin propanol emulsifiers water dispersed phase successfully used model biomimetic media carry enzymatic reactions may naturally occur olive oil evaluate size dispersed polar domains function water content dynamic light scattering dls measurements carried radii range observed polarity interior polar domains studied electron paramagnetic resonance epr spectroscopy using polar spin probe certain water content polarity spin probe mobility affected water content system remained unaltered oxidative enzymatic reactions using native olive peroxidase pod also present virgin olive oil horseradish peroxidase hrp carried microemulsions using azino bis ethylbenzo thiazoline sulfonic acid abts gallic acid substrates enzymatic activities affected restricted environment nanoreactors also different polarity medium leading comparable initial velocity values substrates elsevier rights reserved
nanovesicles similar ubiquitous cell biology important vector drug delivery mechanical properties vesicles known influence cellular uptake mechanism deformation dynamics affect internalization poorly understood partly due fact experimental studies mechanics vesicles remain challenging particularly nanometer scale appropriate theoretical models also lacking probe mechanical properties nanoscale liposomes using atomic force microscopy afm indentation mechanical response nanovesicles shows initial linear behavior subsequent flattening corresponding inward tether formation derive quantitative model including competing effects internal pressure membrane bending corresponds well experimental observations results consistent bending modulus lipid bilayer similar surprisingly find vesicle stiffness pressure dominated adherent vesicles physiological conditions experimental method quantitative theory represents robust approach study mechanics nanoscale vesicles abundant biology well interest rational design liposomal vectors drug delivery
optogenetics rapidly developing new technique combines optical methods techniques used molecular biology used monitoring various optical processes cells controlling activity using light technique based bacterial opsin expression mammalian neurons review use optogenetics controlling activity specific neuronal populations different regions human brain considered detail paper also presents information light sensitive proteins genetically encoded optical instruments use activation inhibition neurons investigation causal relationship neural networks pathological symptoms
backgroundnovel fusion transcripts fts caused chromosomal rearrangement common factors development cancers current study authors used massively parallel rna sequencing identify new fts colon cancers methodsrna sequencing rna seq tophat fusion used identify new fts colon cancers authors investigated whether novel nuclear receptor subfamily group member nra kelch like family member klhlft transcribed genomic chromosomal rearrangement next expression nra klhlft measured quantitative real time polymerase chain reaction colon cancers matched corresponding normal epithelia resultsthe authors identified nra klhlft normal cancerous epithelia investigating transcript unexpectedly found due uncharacterized polymorphic germline insertion nra sequence chromosome klhl locus chromosome rather chromosomal rearrangement germline insertion occurred population frequency appeared bear relationship cancer development moreover expression nra klhlft validated rna specimens samples insertions nra klhl gene locus samples without insertion interesting note nra klhft expression levels significantly lower colon cancers matched normal colonic epithelia suggesting potential participation nra klhlft origin progression tumor type conclusionsnra klhlft generated polymorphism insertion nra sequence klhl locus nra klhlft may influence origin progression colon cancer moreover researchers aware similar fts may occur due transchromosomal insertions correctly annotated genome databases especially current assembly algorithms cancer american cancer society novel fusion transcript identified rna sequencing nuclear receptor subfamily group member nra kelch like family member fusion transcript klhlft generated polymorphism insertion klhl locus instead chromosome rearrangement expression nra klhlft appears lower colon cancers matched normal tissues suggesting potential participation nra klhlft origin progression colon cancer
phytoene synthase psy key regulatory enzyme carotene biosynthesis plays important role regulating color formation many species present study protocol developed transformation narcissus tazzeta var chinensis using agrobacterium tumefaciens strain lba harboring binary vector pcambia plasmid contained antisense phytoene synthase gene reporter beta glucuronidase gene selectable marker hygromycin phosphotransferase gene effects factors efficiency transformation regeneration examined preculture explants days inoculation enhanced transient gus expression addition acetosyringone mol stop inoculation period days cultivation yielded efficient transient gus expression transformants obtained selection medium containing benzylaminopurine alpha naphthalene acetic acid naa hygromycin bar transformation frequency based pcr analysis gus gene one two copies transgene demonstrated different transformations southern blotting analyses northern blotting results confirmed transcription endogenous psy gene transgenic plants inhibited silenced method reported provides new opportunities improvement quality traits narcissus tazzeta via genetic transformation
mammalian phenylalanine hydroxylase pah catalyzes rate limiting step phenylalanine catabolism consuming phenylalanine input diet protein catabolism physiological conditions humans mutations pah gene lead phenylketonuria pku mutations mainly associated pah misfolding instability established treatment pku phenylalanine restricted diet recently supplementation preparations natural tetrahydrobiopterin cofactor also shows effectiveness patients since significant increase understanding structure catalytic mechanism regulation pah substrate cofactor addition improved correlations genotype phenotype pku importantly also increased number studies structure function pah bacteria lower eukaryote organisms revealing additional anabolic role enzyme synthesis melanin like pigments review discuss recent studies contribute define evolutionary adaptation pah structure function leading sophisticated regulation effective catabolic processing phenylalanine mammalian organisms iubmb life
paper assesses discovery dose rate effect radiation genetics challenged fundamental tenets linear non threshold lnt dose response model including assumptions mutational damage cumulative irreversible dose response linear low doses newly uncovered historical information also describes key report international commission radiological protection icrp addressed effects dose rate assessment genetic risk unique story involves assessments two leading radiation geneticists hermann muller william russell independently argued report genetic summary section dose rate incorrect simultaneously offering vastly different views report summary contained paper reveals occurrences scientific disagreements conflicts resolved view prevailed process nobel laureate muller provided incorrect information icrp appears attempt manipulate decision making process prevent dose rate concept adopted risk assessment practices
exfoliation syndrome xfs common age related disorder leads deposition extracellular fibrillar material throughout body recognized disease manifestation exfoliation glaucoma xfg common cause blindness worldwide recent developments xfs genetics cell biology epidemiology greatly improved understanding etiology complex inherited disease review summarizes current knowledge xfs pathogenesis identifies gaps knowledge discusses areas future research published elsevier ltd
fusarium wilts strawberry caused fusarium oxysporum fragariae serious soil borne disease fusarium wilt causes dramatic yield losses commercial strawberry production stubborn disease control reliable chemical control strawberry fusarium wilt disease yet available moreover well known oxysporum different genetic information oxysporum fragariae analysis investigates genetic diversity strawberry fusairum wilt pathogen total pathogens isolated three major strawberry production regions namely sukok hadong sancheong gyeongnam province south korea isolates confirmed using oxysporum fragariae species specific primer sets polymerase chain reaction restriction fragment length polymorphism pcr rflp analyses executed using internal transcribed spacer intergenic spacer translation elongation factorl alpha beta tubulin genes pathogens four restriction enzymes alui hhai hpyi regarding results diverse patterns three gene regions except beta tubulin gene region correlation analysis strawberry cultivation region cultivation method variety phenotype isolated pathogen confirmed genetic diversity depended classification cultivated region
present study efficient agrobacterium mediated gene transformation system developed ramie boehmeria nivea gaud based examinations several factors affecting plant transformation efficiency effects agrobacterium cell density acetosyringone cultivation temperature cultivation duration cultivation photoperiod stable transformation evaluated agrobacterium concentration improved efficiency transformation concentration acetosyringone cultivation significantly increased transformation efficiency cultivation degrees comparison degrees consistently resulted higher transformation frequencies relatively short cultivation duration days optimal ramie transformation cultivation medium cultivation darkness improved transformation efficiencies ramie overall scheme producing transgenic ramie presented average transformation rate five ramie varieties obtained stable expression integration transgenes confirmed histochemical gus assay kanamycin painting assay pcr southern blotting optimized transformation system employed efficient agrobacterium mediated transformation ramie
thrombomodulin thbd serves cofactor thrombin mediated activation anticoagulant protein pathway genetic aberrations thbd studied arterial venous thrombosis however genetic changes thbd role risk assessment recurrent venous thromboembolism vte well understood aim present study identify genetic aberrations thbd association risk vte recurrence prospective population based study sequenced entire thbd gene first selected patients vte sanger sequencing later validated polymorphisms minor allele frequency maf whole study population follow period taqman polymerase chain reaction total identified polymorphisms thbd polymorphisms maf validated significant association thbd polymorphisms risk vte recurrence univariate multivariate cox regression analysis found hazard ratio confidence interval thbd polymorphisms respectively adjusted family history acquired risk factors vte location deep vein thrombosis risk thrombophilia subanalysis patients unprovoked first vte also showed significant association identified thbd polymorphisms risk vte recurrence results show aberrations thbd gene may useful assessment vte recurrence however studies large sample size needed confirm findings
agrobacterium tumefaciens mediated transformation system established hybanthus enneaspermus using leaf explants strain lba harbouring pcambia carrying nptii gusa genes sensitivity leaf explants kanamycin standardized screening transgenic plants transformation parameters virulence inducer infection time cultivation period bactericidal antibiotics etc influencing gene transfer integration assessed present investigation fourteen day pre cultured explants subjected agrobacterium strain lba optimized parameters culture density infection time min concentration days cultivation revealed maximum transformation efficiency based gus expression assay presence gusa transgenics confirmed polymerase chain reaction southern blotting analysis present transformation experiment yielded shoots explant higher transformation efficiency protocol could used introduce genes trait improvement well altering metabolic pathway secondary metabolites production
understanding key health concepts crucial participation precision medicine initiatives order assess methods develop disseminate curriculum educate community members northern manhattan precision medicine clients local community based organization interviewed health literacy acculturation use internet email text messaging health information sources assessed associations age outcomes evaluated multivariable analysis used examine relationship participant characteristics sources health information interviewed inadequate health literacy access internet email text messaging adequate health literacy associated seeking information healthcare professional internet aegrade school education also preferred information provider persons years less likely use internet health information preferred printed media overall electronic communication channel use low varied significantly age years likely utilize electronic channels preferred sources health information also varied age well health literacy educational level study demonstrates effectively communicate key precision medicine concepts curriculum development latino community members northern manhattan require attention health literacy language preference acculturation incorporate traditional communication channels older community members
aim study effect psilencer sirna stat growth human laryngeal tumors nude mice methods hep cells transplanted nude mice time tumor formation growth rates observed tumor formed psilencer sirna stat injected tumor volumes calculated growth curves plotted representative histological sections taken mice bearing transplantation tumors treated control groups stat ptyr stat bcl cyclin survivin expression detected western blotting survivin mrna levels detected northern blotting hematoxylin eosin staining terminal deoxyribonucleotidyl transferase mediated dutp digoxigenin nick end labeling tunel assay confirm apoptosis tumors results nude mice psilencer sirna stat significantly suppressed growth tumors compared controls suppressed stat expression downregulated bcl cyclin survivin expression within tumor significantly induced apoptosis tumors conclusion psilencer sirna stat able inhibit growth transplanted human laryngeal tumors nude mice induce apoptosis
pacific coast tick dermacentor occidentalis marx found throughout california harbor agents cause human diseases anaplasmosis ehrlichiosis tularemia rocky mountain spotted fever rickettsiosis previous studies demonstrated nonpathogenic endosymbiotic bacteria interfere rickettsia infections tick species hypothesized within occidentalis ticks interference may exist different nonpathogenic endosymbiotic nonendosymbiotic bacteria spotted fever group rickettsia sfgr using pcr amplification sequencing romp gene intergenic region identified cohort sfgr infected non infected occidentalis ticks collected san diego county amplified partial segment rrna gene used next generation sequencing elucidate microbiomes levels infection ticks sfgr philipii str rhipicephali detected ticks respectively via romp sequencing interestingly next generation sequencing revealed inverse relationship number francisella like endosymbiont fle rrna sequences rickettsia rrna sequences within individual ticks consistent partial interference fle sfgr infecting ticks excluding rickettsia fle endosymbionts analysis small significant difference microbial community diversity pattern geographic isolation distance collection locales addition male ticks greater diversity bacteria female ticks ticks infected sfgr similar microbiomes canine skin microbiomes although experimental studies required confirmation findings consistent hypothesis fles lesser extent bacteria interfere ability occidentalis infected certain sfgr results also raise interesting possibilities effects putative vertebrate hosts tick microbiome
importance neuro immune interactions physiological pathophysiological states overstated appreciation neuroimmune nature brain spinal cord grows need extend spatial temporal resolution molecular analysis techniques current imaging technologies applied investigate actions neuroimmune system health disease states adapted fields immunology neuroscience classical techniques provided immense insight function cns however inherently limited thus development innovative methods overcome limitations crucial imaging quantifying acute chronic neuroimmune responses therefore review aims convey emerging novel complementary imaging technologies form accessible medical scientists engaging neuroimmune research elsevier inc rights reserved
mitochondrial oxidative phosphorylation oxphos dysfunction implicated growing spectrum diseases neurodegeneration cancer tissues transformed cells available respirometry enzymology allow sophisticated analysis oxphos modest cost equipment isolation organelle fractions also invaluable determining association proteins interest revisit consolidate methods measure whole cell mitochondrial atp synthesis respiration isolation mitochondria cultured cells tissues oxphos enzymology also explain common pitfalls guide optimisation methods new users provide full laboratory protocols supplementary materials elsevier mitochondria research society rights reserved
sewage samples investigated study norovirus concentrations sewage genotypes noroviruses circulating human populations however statistical relationship concentration virus number infected individuals clinical importance genotypes strains detected sewage unclear study carried environmental clinical surveillance noroviruses years performed cross correlation analysis concentrations norovirus gii sewage samples collected weekly reported number gastroenteritis cases norovirus genotypes sewage also analyzed pyrosequencing compared identified stool samples cross correlation analysis found peak coefficient lag zero indicating variation gii concentration expressed log number copies per milliliter coincident gastroenteritis cases total norovirus genotypes genotypes per sample detected sewage included genotypes identified stool samples except gii frequently detected sample types followed gii phylogenetic analysis revealed strain belonging gii kawasaki lineage introduced study area season increase cases observed season sewage monitoring identified presence previous season results demonstrated monitoring noroviruses sewage useful sensitive detection epidemic variants human populations importance obtained statistical evidence relationship variation norovirus gii concentration sewage gastroenteritis cases year study period sewage sample analysis pyrosequencing approach enabled understand temporal variation norovirus genotypes circulating human populations found strain closely related gii kawasaki lineage introduced study area least year appearance identification clinical cases similar pattern observed cases reported season closely related strains found sewage previous season observation indicates monitoring noroviruses sewage useful rapid detection epidemic also sensitive enough study molecular epidemiology noroviruses applying approach enteric pathogens sewage enhance understanding ecology
phospholipase pld phosphatidylcholine implicated apoptosis cancer however direct evidence role pld cause apoptosis remains obscure recently reported apoptosis necrosis could induced cerebellum brainstem focal cerebral hypoxic ischemic injury found apoptosis could enhanced farnesol inhibition pld signal transduction whereas shown highly invasive cancer cell line depends pld activity survival deprived serum growth factors based reports postulated apoptosis cerebellum brainstem induced focal cerebral treatment may caused faulty pld expression consistent report pld activity mrna levels regulated apoptosis test hypothesis northern blotting used examine pld mrna expression focal cerebral results show pld mrna transcripts significantly decreased much brainstem cerebellum areas compared control concur previous report decreasing pld activity ischemia pld transcripts however significantly different control days indicating decrease pld transcription maybe transient phenomenon first report show loss membrane integrity resulting deprivation energy growth factors could cause decrease pld transcription promotes apoptosis hypothetic role pld mechanism leading apoptosis remains elucidated
objectives epidermal growth factor receptor egfr mutation testing companion diagnostic determine eligibility treatment egfr tyrosine kinase inhibitors egfr tkis non small cell lung cancer nsclc recently plasma based egfr testing digital polymerase chain reaction dpcr enables accurate quantification target dna shown promise minimally invasive diagnostic aimed evaluate accuracy plasma based egfr mutation test developed using chip based dpcr based detection egfr mutations exon deletions exon exon materials methods forty nine patients nsclc harboring egfr activating mutations enrolled circulating free dnas cfdnas extracted plasma patients treatment progression following egfr tki treatment respectively results using reference genomic dna containing mutation detection limit assay determined sensitivity specificity detecting exon deletions mutations calculated comparing mutation status corresponding tumors respectively showing similar results compared previous studies detected cfdnas progression egfr tki treatment cfdnas start treatment conclusion chip based dpcr assay facilitate detection egfr mutations cfdna minimally invasive method clinical settings elsevier rights reserved
several metabolic enzymes assemble distinct intracellular structures prokaryotes eukaryotes suggesting important functional role cell physiology ctp generating enzyme ctp synthase forms long filamentous structures termed cytoophidia bacteria yeast fruit flies human cells independent catalytic activity however amino acid determinants protein protein interaction necessary polymerisation remained unknown study systematically analysed role conserved terminal drosophila ctp synthase cytoophidium assembly mutational analyses identified three key amino acid residues within region play instructive role organisation ctp synthase filamentous structure transfection assays demonstrated formation heteromeric ctp synthase filaments disrupted protein carrying mutated terminal alanine residue thus revealing dominant negative activity interestingly dominant negative activity supressed ctp synthase inhibitor furthermore found amino acids corresponding position human protein exhibit similar properties suggesting conservation function evolution data suggest cytoophidium assembly multi step process involving terminal dependent sequential interactions correctly folded structural units provide insights assembly enigmatic structures
telomeres ends human chromosomes consist tandem hexametric ttaggg repeats protect degradation cycle cell division normal somatic cells lose approximately terminal telomeric repeat dna precise prediction growth estimation malignant potential brain tumors require additional markers dna extraction performed frozen tissues non radioactive chemiluminescent assay used southern blotting one sample test shows highly significant difference telomere length meningioma astrocytoma normal range according results higher grades meningioma astrocytoma tumors show heterogeneity telomere length also seems shortening process telomeres early event brain tumors
human african trypanosomes blood parasites cause sleeping sickness debilitating disease sub saharan africa glycerol kinase parasites additionally possesses novel property reverse catalysis essential blood stream form trypanosome therefore promising drug target utilizing recombinant dna technology optimized procedure obtaining large amount purified protein established furthermore biochemical data enzymology reported protein maximally active temperature range degrees activation energy mol enzyme catalyses reversible bisubstrate adp glycerol phosphate biproduct atp glycerol reaction adp respectively max mol min respectively unexpectedly enzyme lost activity degrees sodium phosphate buffer containing mgso however perfect stabilization weeks achieved presence natural ligands cofactor using stabilized protein crystals trypanosome better resolution obtained accelerate success inhibitor development drug design
hormonal responses acute stress rely rapid induction corticotropinreleasing hormone crh production mammalian hypothalamus subsequent instructive steps culminating corticosterone release periphery hypothalamic crh neurons paraventricular nucleus hypothalamus therefore considered stress neurons however significant morphological functional diversity among neurons transiently produce crh hypothalamic nuclei proposed particularly histochemical molecular biology evidence associates crh gaba glutamate neurotransmission review recent advances single cell rna sequencing circuit mapping suggest crh production reflects state switch hypothalamic neurons thus confers functional competence rather identity mark phenotypically segregated neurons show crh mrna transcripts therefore seen gabaergic glutamatergic dopaminergic neuronal contingents hypothalamus distinguish stress neurons paraventricular nucleus constitutively express secretagogin sensor critical stimulus driven assembly molecular machinery underpinning fast regulated exocytosis crh median eminence cumulatively infer crh neurons functionally molecularly diverse previously thought
backgroundosteochondrosis considered multifactorial origin factors nutrition conformation body size trauma genetics thought contribute pathogenesis studies investigated effects genetic variability osteochondrosis thoroughbreds objectivesto describe prevalence genetic variability subset osteochondrosis lesions group thoroughbred yearlings study designretrospective cohort study methodsradiographs thoroughbred yearlings retrieved clinical records obtained pedigree information obtained australian stud book osteochondrosis lesions documented selected joints estimates heritability obtained fitting linear mixed models asreml software resultsthe overall prevalence osteochondrosis osteochondrosis identified stifle joints hock joints fetlock joints heritability estimates ranged largest estimates lesions distal intermediate ridge tibia dorso proximal proximal phalanx stifle osteochondrosis lesions lateral trochlear ridge distal femur respectively although calculated heritability estimates high standard errors meta analyses combining present results published estimates significant stifle tarsal fetlock joints combined respectively addition permanent environment attributable dam effect main limitationsinclusion criteria based radiographic findings specific joints specific age range thoroughbreds conclusionsthe present results indicate proportion osteochondrosis thoroughbreds heritable permanent environment effects dam observed effects categories osteochondrosis
novel drought response transcription factor gene pedrebb cloned populus euphratica oliv successfully transferred white clover trifolium repens hai soaking seeds agrobacterium tumefaciens total kanamycin resistant primary transformants obtained pcr analysis confirmed carry pedrebb gene southern blotting gus assay confirmed pedrebb gene integrated plant genome transformation efficiency calculated basis total number germinated seeds transgenic plants showed significant stronger drought tolerance non transgenic plants research suggested transformation method soaking seeds tumefaciens effective white clover pedrebb used approach enhance drought tolerance white clover
kda protein one important components haemonchus contortus barber pole worm excretory secretory products hcesps shown important antigenic function however little known immunomodulatory effects protein host cell present study gene encoding kda excretory secretory protein hces cloned recombinant protein hces rhces expressed histidine tagged fusion protein soluble form escherichia coli binding activity rhces goat pbmcs confirmed immunofluorescence assay ifa immunomudulatory effect cytokine secretion cell proliferation cell migration nitric oxide production observed incubation rhces ifa results revealed rhces could bind pbmcs interaction rhces increased production cell migration dose dependent manner however rhces treatment significantly suppressed production ifn gamma proliferation pbmc nitric oxide production findings showed rhces played important regulatory effects goat pbmcs
contrast traditional biological paradigms focused specificity recent research theoretical efforts focused functional promiscuity exhibited proteins enzymes many biological settings including enzymatic detoxication steroid biochemistry signal transduction immune responses addition divergent evolutionary processes apparently facilitated random mutations yield promiscuous enzyme intermediates intermediates turn provide opportunities evolution optimize new functions existing protein scaffolds cases promiscuity may simply represent inherent plasticity proteins resulting polymeric nature distributed conformational ensembles enzymes proteins bind metabolize noncognate substrates create messiness noise systems contribute increasing awareness frequency promiscuous behaviors becomes interesting important understand molecular bases promiscuous behavior distinguish evolutionarily selected promiscuity evolutionarily tolerated messiness review provides overview current understanding aspects protein biochemistry enzymology elsevier ltd rights reserved
rapid advance genome sequencing presents substantial challenges protein functional assignment half new protein sequences inferred genomes uncertain assignments assignment enzyme function functionally diverse superfamilies represents particular challenge address combination computational predictions enzymology structural biology describe results focused investigation group enzymes enolase superfamily involved epimerizing dipeptides first members group functionally characterized ala glu epimerases eschericiha coli bacillus subtilis based operon context enzymological studies enzymes presumed involved peptidoglycan recycling subsequently studied related enzymes computational methods including homology modeling metabolite docking suggested many would divergent specificities likely different unknown biological roles addition ala phe epimerase specificity reported previously describe prediction experimental verification new group presumed ala glu epimerases several enzymes specificity hydrophobic dipeptides including one cytophaga hutchinsonii epimerizes ala ala iii small group enzymes epimerize cationic dipeptides crystal structures certain enzymes elucidate structural basis specificities results highlight potential computational methods guide experimental characterization enzymes automated large scale fashion
spermatozoa one mammalian cell types fully derived vitro severely limiting application modern genomic techniques study germ cell biology current gold standard approach characterizing single gene knockout mice slow generation mutant line take months describe vivo approach rapid functional screening germline genes based new nonsurgical nonviral vivo transfection method deliver nucleic acids testicular germ cells coupling multiplex transfection short hairpin rna shrna constructs pooled amplicon sequencing readout able screen many genes spermatogenesis function quick inexpensive experiment transfected nine mouse testes pilot pool rna interference rnai well characterized genes show system highly reproducible accurate false negative rate false positive rate method similar performance rnai screens well described drosophila model system separate experiment screened uncharacterized genes computationally predicted essential spermatogenesis found numerous candidates follow studies finally control experiment performed long term selection screen neuronal cells sampling shrna frequencies five sequential time points characterizing effect libraries cells show screening results testis tissue specific calculations indicate current implementation approach could used screen thousands protein coding genes simultaneously single mouse testis experimental protocols analysis scripts provided enable groups use procedure study diverse aspects germ cell biology ranging epigenetics cell physiology approach also great promise applied tool validating diagnoses made medical genome sequencing designing synthetic biological sequences act potent highly specific male contraceptives
cyclic diadenylate monophosphate amp diadenosine pentaphosphate apa determined play important roles bacterial physiological processes human metabolism respectively however methods developed use fluorescent sensors sense amp apa real world address challenge study presents fast convenient selective sensitive assay quantifying amp apa fluorescence based competitive binding diadenosine nucleotides polyadenosine probe coralyne designed probe consists mer adenosine base fluorophore unit end quencher unit end coralyne coordination coralyne causes change conformation random coil folded structure thus enabling fluorophore close quencher result fluorescence quenching occurs two organic dyes coralyne probe encounters diadenosine nucleotide resulting complex coralyne diadenosine nucleotides forces removal coralyne probe conformational change probe leads restoration fluorescence within short analysis time min proposed probe provides high selectivity toward amp apa common nucleotides probe detection limit signal noise ratio amp apa estimated respectively practicality proposed probe demonstrated quantifying amp bacteria lysates apa human tears
changes chromatin structure regulate gene expression genome maintenance molecules bind nucleosome complex dna histone proteins key modulators chromatin structure previous work indicated cholesterol ubiquitous cellular lipid may bind chromatin vivo suggesting potential function lipids modulating chromatin architecture however molecular mechanisms cholesterol action chromatin structure remained unclear explored biophysical impact cholesterol nucleosome chromatin fibers reconstituted vitro characterized silico cholesterol binding nucleosome findings support cholesterol assists chromatin formation induces folding long chromatin fibers result direct interaction cholesterol six nucleosomal binding sites
abnormal telomere lengths linked cancer hematologic disorders determination mean telomere content mtc traditionally performed southern blotting densitometry giving mean telomere restriction fragment trf value total cell population studied compared quantitative polymerase chain reaction approach qpcr flow cytometric approach fluorescence situ hybridization flow fish evaluate telomere content distribution total patient peripheral blood mononuclear cells specific cell populations flow fish based situ hybridization using fluorescein labeled peptide nucleic acid pna ccctaa probe dna staining propidium iodide showed qpcr flow fish provide robust measurement flow fish measuring relative content longer qpcr single cell approach trf fluorescence intensity correlate mtc methods showed comparable telomere content reduction age rate relative telomere loss similar published wiley periodicals inc article government work public domain united states america
tam family receptors tyro axl mertk ligands growth arrest specific factor gas protein pros contribute several oncogenic processes cell survival invasion migration chemo resistance metastasis whereby expression often correlates poor clinical outcomes recent years great interest study tam receptors cancer stemming roles oncogenic signaling receptors well roles tumor immunology result several classes tam inhibitors include small molecule tyrosine kinase inhibitors monoclonal antibodies decoy receptors well novel strategies target tam ligands developed paper review biology tam receptors ligands focus cancer well evidence based data continued pursuit tam gas inhibitors clinical practice
poa annua alien species reported antarctic continent many antarctic sub antarctic islands accidentally introduced vicinity polish antarctic station arctowski recently species found entering native plant communities almost years dispersed site first observed therefore considered invasive report first steps eradicate species following initial research quantify biology ecology genetics species detailed mapping tussocks located arctowski station area removed tussocks closest moss carpet formation native plant community high conservation value tussocks growing ecology glacier forefield removed biggest alien plant eradication act conducted far antarctica plan continue eradication process monitor eradicated sites provide valuable information impacts issues related removal alien species maritime antarctic help informing future decisions management plant invasions region given increasing human traffic antarctic associated risks invasion results important arctowski also whole antarctic region
background telomeres repeated sequences hexanucleotide ttaggg vertebrates located chromosome ends eukaryotes protecting dna end joining degradation telomeres become shorter cell cycle telomerase ribonucleoprotein complex alleviates attrition telomerase rna component terc essential element telomerase serving template telomere elongation aca domain terc indispensable telomere biogenesis mutations telomerase components allow accelerated telomere loss resulting various disease manifestations including bone marrow failure date first detailed report box mutation terc related human disease case presentation year old man myelodysplastic syndrome mds short telomeres sequencing identified single heterozygous mutation box patient terc gene mutation also present father son demonstrating germline origin telomere length father blood shorter compared age matched healthy controls normal son also sperm cells patient vitro experiments suggested mutation responsible telomere shortening patient leukocytes contributed pathogenesis bone marrow failure patient conclusion analyzed mutation box terc young mds patient significantly short age telomeres telomeres protect chromosomes instability highly plausible genetic lesion responsible patient hematological manifestations including marrow failure aneuploidy hematopoietic stem cell compartment
carob syrup traditional product native mediterranean region containing high concentration sugar phenolic compounds minerals pinitol bioactive component extracted legumes beneficial effects human metabolism research pinitol content sugar profile different carob syrup samples purchased turkish markets determined mean pinitol sucrose glucose fructose contents samples found dry weight respectively carob syrup considerable amount pinitol compared pinitol including legumes consequently study showed carob syrup may suitable source pinitol medical use pinitol may indicator detection adulteration carob syrup
enteric glia enteric nervous system modulate neuronally regulated gut functions using molecular genetics assessed effects molecular entities expressed otherwise mediating two distinct mechanisms gliotransmitter release connexin hemichannel dependent exocytosis gut function expression mutated favors hemichannel opposed gap junctional activity increased gut motility vivo knock resulted reduction gut motility however inhibition dependent exocytosis affect gut motility vivo rather increased fecal pellet fluid content hampering either expression dependent exocytosis effect colonic migrating motor complexes mainly decreasing frequency velocity contractions vivo thus differentially modulate gut reflexes using two distinct mechanisms gliotransmission
tombusvirus vsr viral suppressor rna interference binds sirnas high affinity whereas flockhouse virus fhv vsr binds long double stranded rna dsrna small interfering rnas sirnas vsrs small proteins function plant animal cells fusing nuclear localization signal nls terminus shifts localization vsr cytoplasmic nuclear allowing researchers specifically probe subcellular distribution sirnas investigate function nuclear cytoplasmic sirnas chapter provides detailed protocol immunoprecipitation sirnas bound epitope tagged vsr subsequent analysis end labeling using cytidine bis phosphate pcp northern blotting
bovine milk lipids bml contain number bioactive substances positive well negative properties mainly class fatty acids besides trans fatty acids tfa conjugated linoleic acids cla particular interest apart ruminant meat products main source cla food bml although tfa well saturated fatty acids thought positively correlated atherosclerosis coronary heart disease cla considered antiatherogenic cla reported reduce adipose fat anticarcinogenic properties varying cla tfa contents lipids milk dairy products positively correlated one another however tfa also negatively correlated bml anticarcinogenic effects also ascribed butyric acid well phospholipids ether lipids present bml moreover essential fatty acids found bml involved variety biochemical processes thus numerous functions human metabolism contents individual bioactive components bml summarised taking account also seasonal variations total content bioactive substances bml approximately overall impact human health considering benefits drawbacks difficult assess
human leukocyte antigens hla extensively studied antigen presenting receptors many aspects function remain elusive especially association various autoimmune diseases discuss illustrative case reciprocal relationship certain hla drb alleles two diseases rheumatoid arthritis pemphigus vulgaris strongly associated hla drb alleles encode five amino acid sequence motif region beta chain called shared epitope associated hla drb allele encodes different sequence motif region interestingly hla drb confers susceptibility alleles encode sequence motif region beta chain protective currently convincing explanation antagonistic effect present briefly review immunology immunogenetics diseases identify remaining gaps understanding association hla propose possibility beta epitope may contribute disease risk mechanisms antigen presentation
reintroducing native wildlife populations common conservation management approach aimed reducing threat extinction restoring ecosystem function captive born individuals sometimes used reintroductions effectiveness strategy poorly understood due insufficient post reintroduction monitoring evaluation objective evaluate utility using captive born individuals endangered rodent perdido key beach mouse peromyscus polionotus trissyllepsis reestablish population western end perdido key gulf state park alabama extirpated released captive born mice march monitored population livetrapping across sessions spanning years evaluated temporal changes microsatellite genetic diversity determine whether mice born wild derived released mice number mice declined individuals first weeks release increased estimated confidence interval individuals years genetic monitoring demonstrated slight decrease diversity first months increase year admixture neighboring population detected year year corresponded largest increase population size trapping sessions change abundance corresponded doubling signifying possible role admixture population growth resilience study demonstrates feasibility using captive born beach mice reestablish populations wild populations small serve donors translocation could however discern gene flow expanding neighboring population affected growth persistence reintroduced population study emphasizes future reintroductions genetics monitored together demographic patterns cryptic gene flow could affect interpret reintroduction success
head neck reconstructive microsurgery constantly innovating combination multidisciplinary advances article examines recent innovations affected field well presenting research leading future advancement innovations include use virtual surgical planning three dimensional printing craniofacial reconstruction advances intraoperative navigation imaging well postoperative monitoring development minimally invasive reconstructive microsurgery techniques integration regenerative medicine stem cell biology reconstruction dramatic advancement face transplant
natural killer cell activity regulated activating inhibitory signals transduced killer cell immunoglobulin like receptors kir diversity kir gene repertoire among individuals may affect disease outcome sepsis development severity may influenced genetic factors affecting immune response examined sixteen kir genes human leucocyte antigen hla class ligands critical patients aiming identify patterns could associated sepsis male female patients ages ranging years old included dna samples patients sepsis controls critical care patients sepsis collected included genotyped kir genes using polymerase chain reaction method sequence specific oligonucleotide pcr sso hla genes using polymerase chain reaction method sequence specific primers pcr ssp frequencies activating kirds kirds sepsis patients compared controls versus versus respectively bonferroni correction results indicate activating kir genes may prevalent critical patients without sepsis patients sepsis suggesting potential protective role activating kir genes sepsis american society histocompatibility immunogenetics published elsevier inc rights reserved
ambient particulate matter known induce inflammation respiratory tract exposed subjects aim present study detect bronchial epithelial cells candidate inflammatory genes exhibiting transcriptional modifications following urban exposure paris urban sampled either curbside background station winter summer tested comparison diesel exhaust particles dep microg human bronchial epithelial hbe cells exposure gene profiling study performed using cdna cytokine expression array highlighted differential expression certain genes three selected genes interest alpha cytokine gro alpha chemokine amphiregulin ligand egf receptor increased expression confirmed pcr northern blotting bronchial epithelial cells culture medium particle treated cultures increased release gro alpha amphiregulin shown particle component responsible protein release varied two genes organic extract seemed mainly involved amphiregulin expression secretion whereas aqueous organic extracts induced gro alpha release conclusion bronchial epithelial cells paris increased mrna protein expression gro alpha involved chemoattraction process bronchial remodeling respectively
squalene synthase catalyzes biosynthesis squalene first specific intermediate cholesterol biosynthetic pathway test feasibility lowering plasma cholesterol inhibiting hepatic generated mice specifically knocked liver ssko using cre loxp technology hepatic activity ssko mice reduced addition cholesterol biosynthesis liver slices almost eliminated although hepatic squalene contents markedly reduced ssko mice hepatic contents cholesterol precursors distal squalene indistinguishable control mice indicating presence sufficient centripetal flow cholesterol precursors extrahepatic tissues ssko mice showed transient liver dysfunction moderate hepatomegaly presumably secondary increased farnesol production fed state plasma total cholesterol triglyceride significantly reduced ssko mice primarily owing reduced hepatic vldl secretion fasted state hypolipidemic effect lost mrna expression liver receptor alpha target genes reduced sterol regulatory element binding protein target genes increased conclusion liver specific ablation inhibits hepatic cholesterol biosynthesis induces hypolipidemia without increasing significant mortality
synthetic binding proteins constructed using nonantibody molecular scaffolds last two decades depth structural functional analyses synthetic binding proteins improved combinatorial library designs selection strategies resulted potent platforms consistently generate binding proteins diverse targets affinity specificity rival antibodies favorable attributes synthetic binding proteins small size freedom disulfide bond formation ease making fusion proteins enabled unique applications protein science cell biology beyond review recent studies illustrate synthetic binding proteins powerful probes directly link structure function often leading new mechanistic insights propose synthetic proteins become powerful standard tools diverse areas protein science biotechnology medicine
background respiratory morbidity australian indigenous children higher non indigenous counterparts irrespective urban remote residence limited studies addressing acute respiratory illness ari urban indigenous children particularly address upper airway microbiome relationship disease aimed describe prevalence upper airway viruses bacteria symptomatic asymptomatic urban based australian indigenous children aged less years methods cross sectional analysis data collected baseline ongoing prospective cohort study urban aboriginal torres strait islander children registered primary health care service northern suburbs brisbane australia clinical demographic epidemiological data bilateral anterior nasal swabs collected enrolment polymerase chain reaction performed nasal swabs detect respiratory viruses bacteria primary outcome prevalence microbes enrolment logistic regression performed investigate differences microbe prevalence children without acute respiratory illness cough symptom ariwc time specimen collection results february october children enrolled median age enrolment months iqr boys children ariwc overall nasal swabs positive least one organism bacteria virus viruses bacteria detection viruses bacteria common females males microbes alone combination significantly associated presence ariwc conclusions prevalence upper airways microbes asymptomatic children similar non indigenous children ariwc region determining aetiology ariwc community complicated high prevalence multiple respiratory pathogens upper airways
computational study human metabolism advanced advent first generic non tissue specific stoichiometric model human metabolism study present new algorithm rapid reconstruction tissue specific genome scale models human metabolism algorithm generates tissue specific model generic human model integrating variety tissue specific molecular data sources including literature based knowledge transcriptomic proteomic metabolomic phenotypic data applying algorithm constructed first genome scale stoichiometric model hepatic metabolism model verified using standard cross validation procedures ability carry hepatic metabolic functions model flux predictions correlate flux measurements across variety hormonal dietary conditions improve upon predictive performance obtained using original generic human model prediction accuracy versus finally model better predicts biomarker changes genetic metabolic disorders generic human model accuracy versus approach presented used construct human tissue specific models applied organisms molecular systems biology published online september doi msb
aim evaluate relationship maternal corticosteroid use first trimester pregnancy risk orofacial clefts overall findings showed certain association maternal corticosteroid use occurrence compared non users study type considered association significant case control studies cohort studies many confounders dose route application disease etc biases call loss followup etc still need considered subgroup analysis based type gave overall case control studies cleft lip without palate cleft palate cpo comparing maternal corticosteroid users non users however cohort studies overall cpo absolute risk facial cleft prenatal exposure corticosteroids small elsevier inc rights reserved
purpose correlate visual acuity outcomes clinical features quantitative pcr dna copy number patients acute retinal necrosis arn methods retrospective consecutive case series results total eyes patients diagnosed arn based american uveitis society criteria followed mean days median days days anterior chamber fluid analyzed quantitative pcr identified viral dna eyes varicella zoster virus vzv identified seven eyes herpes simplex virus hsv four eyes mean dna copy number median range eyes quantitative pcr dna copy number eyes worse baseline visual acuity logmar final visual acuity logmar compared patients dna copy number eyes patients dna copy number likely least clock hours retinitis funduscopic exam developed retinal detachment frequently conclusions quantitative dna copy number associated extensive retinitis worse visual acuity development retinal detachment patients acute retinal necrosis
fresh fruit longan dimocarpus longan lour susceptible pericarp browning aril breakdown aril breakdown longan fruit regarded one important factors reducing quality shortening storage life fruit better understand molecular mechanism aril breakdown expression patterns three expansin exp three xyloglucan endotransglucosylase xet genes relation aril breakdown longan fruit stored room temperature degrees low temperature degrees investigated results showed aril breakdown index increased progressively storage degrees northern blotting analysis revealed accumulations three exp three xet genes exhibited differential characteristics occurrence aril breakdown storage degrees accumulations xet increased day suggesting xet correlated well early aril breakdown exp together xet xet involved later aril breakdown however expression xet xet could mainly involved aril breakdown longan fruit stored degrees addition exp whose accumulation increased sharply longan fruit transferred low temperature room temperature within hours related aril breakdown storage period data indicated exps xets closely related aril breakdown longan fruit
background protein secretion one important processes eukaryotes based highly complex machinery involving numerous proteins several cellular compartments elucidation cell biology secretory machinery great importance drives protein expression biopharmaceutical industry billion usd global market however complexity secretory process difficult describe using simple reductionist approach therefore promising avenue employ tools systems biology results basis manual curation literature yeast human mouse secretory pathway compiled comprehensive catalogue characterized proteins functional annotation interconnectivity thus established elaborate reconstruction recon functional secretion pathway network date counting different components mouse employing mouse recon cho genome comparative genomic approach could reconstruct protein secretory pathway cho cells counting cho components recon furthermore facilitated development three alternative methods study protein secretion graphical visualizations omics data demonstrated use methods identify potential new known targets engineering improved growth igg production well general observation cho cells seem less strict transcriptional regulation protein secretion healthy mouse cells conclusions recon secretory pathway represents strong tool interpretation data related protein secretion illustrated transcriptomic data chinese hamster ovary cho cells main platform mammalian protein production
predictions human pesticide metabolism needed interpretation biological monitoring data frequently made animal studies consequently assumptions made relationship absorbed dose metabolite excretion results two human volunteer studies highlight problems associated extrapolating animal studies way pyrethroid insecticide cypermethrin shows markedly different metabolite patterns administered orally dermally man following dermal dosing ratio trans cis cyclopropane acids approximately compared oral administration ratio total cyclopropane acids phenoxybenzoic acids also differs depending route dermal oral knowledge human metabolism two routes enables much meaningful interpretation biological monitoring measurements herbicide molinate forms mercapturate conjugate major urinary metabolite rat volunteers low dose levels metabolite present insignificant levels hydroxymolinatc much abundant metabolite shows extrapolation species misleading concluded benefits using human volunteers metabolism studies low doses far outweigh minimal risks involved basis biological monitoring studies lead greatly improved risk assessment pesticides use
identification new fluorescent biomarkers key issue decipher mechanisms living cells isolated fungus epicoccum nigrum natural epicocconone establishes covalent reversible link primary amines identified new fluorescent dye cell imaging present study properties synthetic multifunctional analogue epicocconone compared photon photon advanced light microscopies triangle lambda confocal microscopy analyses revealed cell culture medium displayed two peaks excitation large band emission maximum living cells presented sharper bands compared maxima microscopy presented maxima around diluted cell culture medium living cells present large disturbing blue shift emission observed addition bands sharper ones times fluorescent determined approaches induce cytotoxicity adapted time lapse acquisition cells broadly labeled nuclear plasma membranes vesicles like structures organelles including golgi apparatus mitochondria taken together data indicate appropriate properties vitro vivo cell biology studies presents many advantages compared microscopies elsevier ltd rights reserved
healthcare professionals hcps regularly face requests parents predictive genetic testing children adult onset conditions little known hcps handle test requests given guidelines recommend testing deferred adulthood unless medical benefit testing time study explored process decision making hcps parents semi structured interviews conducted hcps regional genetic services across data thematically analysed found instead saying yes requests many hcps framed consultation opportunity negotiate optimal time testing argued facilitates parents considered decision making since parents eventual decisions requesting test often defer testing child cases parents requests remained sustained wish hcps said would agree test concluding testing would serve child wider best interest strategy determining child best interest facilitating shared decision making recommend hcps frame requests testing parents discussion optimal time testing adult onset disease
canine parvovirus type cpv comprises three antigenic subtypes reported many countries subtypes cause serious disease dogs characteristic gastroenteritis signs little information documented africa genetic characterization cpv aim study detect characterize cpv subtypes circulating dogs admitted veterinary clinics two cities mozambique maputo matola total field fecal samples collected tested cpv polymerase chain reaction assay partial length gene positive samples sequenced genetically analyzed twenty six fecal samples positive cpv restriction fragment length polymorphism analysis also performed positive samples reveal presence cpv subtype results sequencing revealed presence cpv cpv cpv cpv detected sequence analysis comparison showed nucleotide identities among cpv isolates amino acid analysis showed predicted amino acid changes phylogenetically cpv strains isolated formed cluster together south african nigerian isolates mozambican cpv isolates also tended cluster together south african isolates however four closely related french strain one isolates american strain present study first characterize cpv circulating mozambican dog population
pollination composed cell cell communication complicated signaling cascades regulate pollen tube growth guidance toward ovules double fertilization critical successful sexual reproduction exploring expression profiles vivo grown pollen tubes important nevertheless difficult obtain accessible pollen tubes profiling studies model plants taking advantage hollow styles lily lilium longiflorum vivo pollen tubes harvested pollinated styles cut open used study protein transcript profiles pollination quantitatively qualitatively altered total protein composition elongating pollen tubes cdnas generated amplified total rnas vivo grown vitro cultured pollen tubes used suppression subtractive hybridization analyses preparation home made array chips microarray analyses conducted different probe sets revealed transcripts specifically present enriched vivo pollen tubes reverse transcription pcr pcr situ hybridization northern blotting applied validate unique pollination induced expression features interestingly several transcripts simultaneously detected stylar transmitting tract epidermis vivo pollen tubes tightly adhered pollination deduced amino acid sequences showed encoded small proteins could classified several families transient assay revealed filament like structures decorated proteins one probably localized generative cell small peptides might critical pollen tube growth pollination exploration biological functions mechanisms action great interest
simple voltammetric determination thiodiglycolic acid tdga offers possibility follow individual deviations metabolism thiocompounds one carbon two carbon units take part endogenous synthesis creatine three groups young men levels tdga urine followed application given food supplement daily doses first group men found level tdga increased independently day time application second group men level tdga increased within interval application dropped normal level third group men days study effects compared alternation vitamin vitamin given evening day morning day increased excretion tdga men four men independently application elsevier ltd rights reserved
aim test hypothesis genistein stimulates osteoblastic differentiation mitogen activated protein kinase mapk core binding factor cbfa pathway methods activation mapk detected western blotting alkaline phosphatase alp activity calcium deposition assessed osteoblastic differentiation bone marrow derived mesenchymal stem cell bmsc cultures expression cbfa analyzed mrna protein levels activity cbfa detected electrophoretic mobility shift assay bone sialoprotein bsp alp osteocalcin osteopontin opn gene transcription also evaluated either pcr northern blotting results genistein mol dose dependently led rapid sustained activation mapk pathway mouse bmsc cultures treatment genistein mol resulted increased alp activity calcium deposition bmsc cultures function time genistein also enhanced cbfa dna binding activity promoted expressions cbfa well several cbfa regulated genes including alp bsp opn concurrent treatment mapk inhibitor diminished genistein induced osteoblastic maturation mapk cbfa activation mouse bmsc cultures conclusion results indicated genistein could stimulate osteoblastic differentiation bmsc cultures mapk cbfa pathway
advancing understanding osteoblast biology differentiation critical elucidate pathological mechanisms responsible skeletal diseases osteoporosis histology histomorphometry classical methods study osteoblast biology identify osteoblasts based location morphology ability mineralize matrix clearly define stage differentiation introduction visual transgenes cells osteoblast lineage revolutionized field resulted paradigm shift allowed specific identification isolation subpopulations within osteoblast lineage knowledge acquired studies based gfp transgenes allowed precise interpretation studies analyzing targeted overexpression deletion genes osteoblast lineage provide condensed overview currently available promoter fluorescent reporter transgenic mice generated evaluated varying extents cover different stages lineage transgenes utilized identify osteoprogenitors pre osteoblasts osteoblasts osteocytes show promoters present advantages disadvantages studies based use reporter mice improved understanding bone biology constitute attractive models target osteoblasts help understand cell biology elsevier inc rights reserved
expressions derived three cases expectation uncertainty body burdens doses calculated linear model environmental transport human metabolism terms expectation uncertainty inputs discrete stochastic random variables three cases compared determine relationship expectations uncertainties varying assumptions constant input case input selected randomly outset simulation period distribution population exposed held constant throughout two time varying cases random autoregressive assumed discrete stochastic exposures input made uncorrelated partially correlated respectively exposure constant time interval length expectation values body burdens doses constant input case identical random case autoregressive cases stationary inputs uncertainties body burdens doses constant input case identical limit rapid metabolism random case autoregressive cases stationary inputs limit slow metabolism uncertainties body burdens doses constant input case respectively greater random case alpha alpha alpha alpha respectively greater autoregressive case stationary inputs autocorrelation coefficient alpha increasing number sampling periods decreases uncertainty increasing autocorrelation increases uncertainty example application ingestion bikini island weak form slow rapid metabolism limits apply give result uncertainty body burden constant input case times greater random case alpha uncertainty body burden autoregressive case times greater random case smooth transition autoregressive case random case constant input case shown alpha increases random constant
background patients failed traditional treatment chronic urticaria may require trials alternative medications safety profiles continuous laboratory monitoring physician comfort often barriers treatment objectives evaluate safety alternative agents used chronic urticaria methods retrospective chart review electronic medical records single center allergy immunology clinic major academic hospital conducted one hundred twenty six charts patients chronic urticaria treated alternative agents reviewed results adverse effects reported patients dapsone patients sulfasalazine patients tacrolimus patients hydroxychloroquine patients mycophenolate patients cyclosporine patients omalizumab adverse effects mild require discontinuation medication resolved stopping medication decreasing dose conclusions use alternative agents treatment chronic urticaria angioedema generally safe proper laboratory clinical monitoring observed american academy allergy asthma immunology
breast cancer second leading cause cancer death women affecting million patients every year worldwide result heterogeneous nature genetic profile associated clinical feature varies greatly among different breast cancer subtypes advancement molecular biology understanding breast cancer improved greatly recent years review examine different types breast cancer summarize clinical features current treatment schemes potential drug resistance profiles response treatments believe understanding molecular mechanisms treatment subsequent drug resistance development eventually lead discovery effective efficient second line therapeutics
background jackals medium sized canids wolf like clade exhibiting unique combination ancestral morphotypes broad trophic niches close phylogenetic relationships wolf dog thus represent potential host several pathogens diverse transmission routes recently populations eurasian golden jackal canis aureus expanded western palaearctic including europe aim study examine eurasian golden jackals romania czech republic austria wide spectrum vector borne protists evaluate role species reservoir disease domestic dogs humans results diagnostic polymerase chain reaction pcr dna amplifications revealed jackals positive hepatozoon positive piroplasms one individual positive leishmania infantum phylogenetic analyses partial rdna sequences invariably placed sequenced isolates hepatozoon canis clade piroplasms cox sequences obtained confirmed presence babesia canis theileria annae individuals respectively providing first records two piroplasmids eurasian golden jackals single animal dolj county romania pcr positive infantum confirmed also sequencing conclusions apparently expanding populations jackals play significant role spreading maintaining new babesia canis foci central europe role jackals epidemiology theileria annae canis probably similar red foxes taken account research parasites also presence infantum deserves attention study confirms established populations eurasian golden jackals constitute natural reservoirs many canine vector borne diseases analogous role coyotes north america
previous studies performed laboratory measured effect atrazine exposure cytochrome dependent monooxygenase activity found increased activity midge larvae chironomus tentans result atrazine exposure ppm report cloning expression specific tentans cyp gene responsive atrazine induction open reading frame encodes putative protein amino acid residues alignments deduced amino acid sequences insect genes phylogenetic analysis indicated high degree similarity insect cyp genes northern blotting analysis employing fragment cyp gene probe indicated cyp gene expressed developmental stages expressed highest levels late instar larvae additionally expression cyp tentans exposed atrazine confirms ability atrazine induce specific genes provides insight potential consequences atrazine exposure aquatic organisms elsevier inc rights reserved
objective beta hydroxy beta methylbutyrate beta metabolite leucine widely used improving sports performance although limp recognized promote anabolic anti catabolic effects protein metabolism impact long term use skeletal muscle genes control skeletal protein balance fully known study aimed investigate whether chronic beta treatment affects activity igf axis skeletal muscle igf myostatin mrna expression design rats treated beta vehicle gavage weeks killed decapitation blood collected evaluation serum insulin glucose igf concentrations samples pituitary liver extensor digitorum longus edl soleus muscles collected total rna protein extraction evaluate expression pituitary growth hormone gene mrna protein hepatic insulin like growth factor igf mrna skeletal muscle igf myostatin mrna northern blotting real time pcr western blotting results chronic beta treatment increased content pituitary mrna hepatic igf mrna serum igf concentration changes detected skeletal muscle igf myostatin mrna expression however treated rats although normoglycemic exhibited hyperinsulinemia conclusions data presented herein extend body evidence potential role beta treatment stimulating igf axis activity spite effect beta supplementation also induces apparent insulin resistance state might limit beneficial aspects former results least rats normal nutritional status health conditions growth hormone research society published elsevier ltd rights reserved
one hundred eighty eight volatile organic compounds vocs identified dust emission dust headspace air sampling residence sampling tenax followed thermal desorption hrgc compounds found dust headspace aliphatic aldehydes octane major contributors headspace gas chromatograms total ion current response desorbed vocs degrees dominated alkanes branched alkanals alkanoic acids many identified vocs could products microbial human metabolism dust volatiles resulting desorption compared dust headspace voc analyses found comparable considering temperature difference method determination total voc tvoc dust emission degrees developed variation desorption tvoc analyses mainly due sample heterogeneity
background neutrophil function critical initiation progression infecto inflammatory diseases key quorum sensing plaque bacteria fusobacterium nucleatum act bridging species early late colonizer pathogens porphyromonas gingivalis biofilm ages periodontal inflammation increases study designed determine impact different nucleatum strains neutrophil function methods cells human promyelocytic leukemia cell line differentiated neutrophil like cells cultured nucleatum strains subspecies ssp nucleatum atcc ssp polymorphum atcc ssp vincentii atcc neutrophil phagocytosis nucleatum strains neutrophil apoptosis analyzed flow cytometry superoxide generation measured cytochrome reduction presence absence formyl methionyl leucyl phenylalanine fmlp stimulation proinflammatory cytokine release determined hours culture presence absence different nucleatum strains expression toll like receptor tlr tlr nuclear factor kappa mrna levels analyzed using real time quantitative polymerase chain reaction experiment repeated least three times triplicate data analyzed using analysis variance followed post hoc bonferroni correction results strains nucleatum significantly increased phagocytic capacity neutrophils neutrophil phagocytosis nucleatum ssp polymorphum significantly greater nucleatum ssp vincentii ssp nucleatum nucleatum ssp nucleatum ssp polymorphum significantly blocked fmlp induced superoxide generation although nucleatum vincentii also reduced superoxide generation impact strong ssp nucleatum ssp polymorphum nucleatum strains stimulated significant increase neutrophil apoptosis compared control significantly increased expression mrna neutrophils levels interleukin tumor necrosis factor alpha produced neutrophils significantly increased nucleatum groups compared control conclusions findings suggest different strains nucleatum impact neutrophil function different ways two three subspecies blocked neutrophil superoxide generation response secondary stimulus preventing oxidative killing neutrophils direct role bridging species pathogenesis periodontitis may greater previously suspected create favorable environment pathogenic transition dental ecosystem
acylation stimulating protein asp interaction receptor influences adipocyte metabolism examined insulin resistance differentiation mediated regulation mechanistic impact cell surface protein ligand binding receptor mrna increased fold differentiation cells day preadipocytes insulin dexamethasone increased mrna mol insulin resulted fold increase nmol dexamethasone resulted fold increase cell surface protein nmol insulin resulted fold increase nmol dexamethasone resulted fold increase adipocytes nmol insulin increased mrna asp binding respectively fold fold dexamethasone decreased ligand binding without changing mrna tumor necrosis factor alpha decreased mrna preadipocytes adipocytes cell surface protein preadipocytes asp binding respectively preadipocytes adipoctyes conversely mol nmol rosiglitazone increased respectively mrna fold asp binding fold thus mrna increases differentiation insulin thiazolidinedione treatment decreases tumor necrosis factor alpha results functional changes asp response may implications human metabolism
complete nucleotide sequence polyprotein gene assembled full length genome sequence presented turkey coronavirus tcov isolates atcc tcov polyprotein gene encoded two open reading frames orfs translated two products ppa ppab latter produced via frameshift translation tcov polyprotein ppa ppab predicted processed non structure proteins nsp nsp nsp missing clustalw analysis revealed identity similarity ppab tcov avian infectious bronchitis virus ibv amino acid level whole genome consists nucleotides nucleotides atcc excluding poly tail total orfs predicted tcov five subgenomic rnas detected atcc infected turkey small intestines northern blotting whole genome sequence identity tcov ibv supporting tcov group coronavirus elsevier rights reserved
escherichia coli sequence type complex stc emerging lineage within phylogroup formerly included within phylogroup associated multidrug resistance designed validated novel multiplex pcr based assay stc took advantage four distinctive single nucleotide polymorphisms icd allele gyrb allele two multilocus sequence typing alleles define typical absence within stc uida coli specific gene encoding beta glucuronidase within diverse strain validation set included sts stc phylogroups assay exhibited sensitivity confidence interval specificity functioned similarly well two distant laboratories used boiled lysates dnazol purified dna template dna thus novel multiplex pcr based assay enable laboratory equipped diagnostic pcr rapidly accurately economically screen coli isolates membership stc
terms familiar start solve test ends dna fragments plasmids restriction endonucleases agarose gel electrophoresis linear circular dna superhelical dna blunt sticky ends dna ligase nuclease gamma atp radioactive labeling international union biochemistry molecular biology
adsorption properties metallic ions essential human metabolism cadmium lead mercury silica chemically modified zirconium phosphate sizrp investigated using batch systems immobilization procedure efficient functionalization degree zirconium mol mol results indicate phosphate reacted zirconium ratio equilibrium reached quickly min indicating adsortion sites well exposed best adsorption parameters evaluated using aqueous phase adsorption time min adsorbent adsorption isotherms obtained metals ions distribution coefficients affinity sizrp metal ions studied increases order twice much lead adsorbed sizrp surface mol cadmium mol mercury capacity greater nevertheless adsorption plateau observed academic press
polar volatile organic compounds pvocs aldehydes alcohols byproducts normal human metabolism thus found blood exhaled breath perturbation normal patterns metabolites may reflect exposures environmental stressors disease state human activity presented herein specific methodology assaying pvoc biomarkers exhaled breath condensate ebc samples application series samples controlled chamber exposure dilute diesel exhaust purified air collection analysis method based condensation normal rest exhaled breaths min resulting liquid subsequent analyte adsorption onto tenax cartridges followed thermal desorption analysis gas chromatography mass spectrometry analytical data linearity response across range detection limit ranging depending compound statistical analyses results controlled exposure study indicate metabolism reflected simple breath borne oxygenated species affected exposure ambient airborne levels linear mixed effects models showed pvoc biomarker levels affected gender vary significantly among nominally healthy subjects differences among pvocs analyzed clinic air purified chamber air chamber air containing dilute confirm compounds likely endogenous origin exogenous exposure levels perturb ebc measurements published elsevier
role hsc maintenance unknown show mice develop severe anomalies hsc maintenance leading defective hematopoiesis whereas lack signaling detrimental lympho erythropoiesis myelopoiesis enhanced mice investigation underlying mechanisms dysregulated hematopoiesis mice shows treg cell axis indispensable hsc maintenance normal hematopoiesis lack treg activity resulted increased ifn gamma production activated cells expansion hscs bone marrow though restoring treg population successfully rescued hsc maintenance mice preventing ifn gamma activity could even absence treg cells study suggests equilibrium ifn gamma activity critical steady state hematopoiesis clinical conditions failure anti ifn gamma treatment might help restore hematopoiesis
molecular diagnosis congenital toxoplasmosis disseminated toxoplasmosis based mainly pcr repeated dna element rep become main dna target used pcr methods whether laboratory developed commercial multicenter study evaluated toxoplasma elite mgb elitech commercial kit comparison three reference quantitative pcr assays ras used routinely three proficient laboratories french national reference center toxoplasmosis network using toxoplasma calibrated suspensions diluted obtain range concentrations parasites suspensions extracted either dna extraction kit extrablood elitech recommended manufacturer qiaamp dna minikit qiagen toxoplasma elite mgb assay also evaluated panel clinical samples including amniotic fluid samples placenta samples various samples originated patients proven toxoplasmosis elite mgb assay amplified low concentration replicates parasites calibrated suspensions less frequently ras laboratories additionally combination extra blood toxoplasma elite mgb yielded poorer sensitivity combination qiaamp dna minikit elite mgb low parasite concentrations parasite clinical samples sensitivity specificity commercial assay respectively sensitivity ranged placenta samples amniotic fluid samples overall study shows toxo plasma elite mgb assay suitable diagnosis toxoplasmosis non cell rich non hemoglobin rich samples extrablood kit optimal
background hepatitis virus hcv core protein addition structural role form nucleocapsid assembly plays critical role hcv pathogenesis interfering several cellular processes including microrna mrna homeostasis terminal truncated hcv core protein intrinsically unstructured solution able interact unspecific nucleic acids micromolar range assemble nucleocapsid like particles nlps vitro specificity propensity assembly implications hcv pathogenesis well understood methods spectroscopic techniques transmission electron microscopy calorimetry used better understand propensity fold multimerize nlps subjected different conditions presence unspecific nucleic acids equivalent size cellular micrornas results structural analysis indicated low propensity self folding hand first time show absence nucleic acids multimerizes empty nlps subjected close isoelectric point indicating assembly mainly driven charge neutralization isothermal calorimetry data showed assembly nlps promoted nucleic acids enthalpy driven additionally data obtained fluorescence correlation spectroscopy show nanomolar range able interact sequester large number short unspecific nucleic acids nlps discussion together data showed charge neutralization major factor nucleocapsid like particles assembly terminal truncated hcv core protein finding suggests hcv core protein may physically interact unspecific cellular polyanions may correspond micrornas mrnas host cell infected hcv triggering confinement infectious particles
year old male admitted sustained fever months lymphadenopathy liver dysfunction anti vca igm antibody positive elevated epstein barr virus ebv dna load peripheral blood liver biopsy revealed infiltration positive ebv positive cells peripheral blood mononuclear cells pbmcs also positive showed detectable levels ebv dna monoclonal proliferation ebv infected cells detected pbmcs southern blotting ebv terminal repeat ebv although ebv positive cell lymphoproliferative disease ebv lpd suspected symptoms spontaneously resolved within months anti vca igm antibody clonal band ebv negative year onset anti ebna antibody positive final diagnosis thus confirmed infectious mononucleosis results indicate ebv infected positive cells clonal proliferation ebv infected cells may temporally detected ebv lpds carefully excluded cases
diversity major histocompatibility complex mhc genes correlated level immunological fitness individual group individuals study tested published primer sets designed amplify fragments mhc class dab dbb genes amplify equivalent gene fragments red tailed phascogales phascogale calura seventeen genomic dna samples extracted phascogale muscle tissue used amplify initial dab dbb fragments however dab pcr proved successful fragments length primers high level identity known marsupial mhc class dab gene sequences including koala phascolarctos cinereus tasmanian devil sarcophilus harrisii commonbrushtail possum trichosurus vulpecula several wallaby species multiple sequence alignment revealed limited variability mhc class genes individuals eight individual sequences total genomic dna subsequently extracted three fresh red tailed phascogale scat samples dab fragments successfully amplified technique allow red tailed phascogales sampled non invasively wild determine level mhc diversity among individuals population
putative glutamate decarboxylase gad gene designated zmgad cloned zea mays combination reverse transcriptase polymerase chain reaction pcr bioinformatic approaches zmgad cdna sequence contained complete open reading frame encoding putative protein amino acids contained pyridoxal phosphate binding domain calmodulin cam binding domain found nearly gads plants sequence analysis showed highest similarity rice gad recombinant zmgad protein expressed escherichia coli purified used measure enzyme activity confirmed zmgad really glutamate decarboxylase gene southern blotting analysis suggested zmgad present single copy gene maize genome pcr analysis revealed zmgad expressed examined tissues including roots stems leaves ears tassels expression zmgad gene upregulated gad activity increased leaves roots treatment aba meja nacl peg cold stress several stress related cis elements present zmgad promoter cloned maize genomic dna results suggested zmgad might play important role responses abiotic factors hormone treatments
background objectiveperiodontal disease chronic infectious disease results bone loss many epidemiological studies reported progression periodontal tissue destruction patients diabetes however associated mechanism remains unclear study comprehensively investigated diabetes affects periodontal tissue alveolar bone loss using ligature induced periodontitis model streptozotocin induced diabetic stz mice material methodsdiabetes induced intraperitoneal injection streptozotocin old blj male mice silk ligature tied around maxillary left second molar old wild type stz mice bone loss evaluated ligation mrna expression levels gingiva two groups examined dna microarray quantitative polymerase chain reaction post ligation tartrate resistant acid phosphatase alkaline phosphatase staining periodontal tissue performed evaluation osteoclasts osteoblasts histological analysis resultsin gingiva hyperglycemia upregulated osteoprotegerin opg mrna expression downregulated osteocalcin mrna expression ligated gingiva tumor necrosis factor tnf mrna expression upregulated post ligation stz mice mice post ligation alveolar bone loss observed stz mice mice significantly severe alveolar bone loss observed stz mice compared mice post ligation bone metabolic analysis using dna microarray showed significant downregulation mrna expression glioma associated oncogene homologue gli collagen type alpha cola gingiva ligated site stz mice compared mice quantitative polymerase chain reaction showed gli cola mrna expression levels significantly downregulated gingiva ligated site stz mice compared mice histological analysis showed lower alkaline phosphatase activity stz mice addition increased number tartrate resistant acid phosphatase positive multinucleated cells observed ligated sites stz mice conclusionsthese results suggest imbalance bone metabolism causes osteoclastosis insulin deficient diabetes alveolar bone loss could occur early phase condition
order investigate stability cryab gene resistance generation transgenic cotton gossypium hirsutum var coker transgenic seeds analyzed pcr southern western blotting bioassayed seed samples transgenic lines along seeds non transgenic lines control used pcr analysis showed presence cryab gene plants integration cryab gene genome transgenic plants confirmed southern blotting western immunoblot analysis transgenic plants revealed presence band kda using anti cryab polyclonal antiserum bioassay tests indicated cryab protein active larvae died first days significant differences observed mortality rate growth rate extent damage leaves transgenic non transgenic plants average mortality larvae line comparison control results indicated relative advantage line carries one copy cryab gene comparison lines
background aims mesenchymal stem cells mscs mediate tissue repair might used prevent reduce liver fibrosis however little known anti fibrotic factors secreted mscs mechanisms methods umbilical cord derived mscs ucmscs differentiated hepatocyte like cells hpucmscs medium collected secretome proteins identified quantified using nanochip liquid chromatography quadrupole time flight mass spectrometry liver fibrosis induced mice intraperitoneal injection thioacetamide ccl mice given injections secretomes proteins liver tissues collected analyzed histology polymerase chain reaction array analyze changes gene expression patterns analyzed effects msc secretomes potential anti fibrotic proteins transforming growth factor beta tgf beta mediated activation human hepatic stellate cell hsc lines htert hsc human primary hscs liver tissues collected patients liver cirrhosis individuals without cirrhosis controls korea analyzed immunohistochemistry immunoblots results mice fibrosis accumulation extracellular matrix proteins significantly reduced days injecting secretomes ucmscs greater extent hpucmscs numbers activated hscs expressed myogenic marker smooth muscle actin alpha sma encoded acta actin alpha smooth muscle also reduced secretomes ucmscs greater extent hpucmscs reduced liver expression multiple fibrotic factors collagens metalloproteinases tgf beta smad proteins tgfb signaling pathways hsc cell lines primary hscs tgf beta stimulated upregulation alpha sma significantly inhibited smad phosphorylation reduced secretomes ucmscs greater extent hpucmscs identified proteins secretomes ucmscs highly concentrated secretomes hpucmscs inhibited tgf beta mediated activation hscs one milk fat globule egf factor mfge strong inhibitor activation human primary hscs found mfge downregulate expression tgfb type receptor binding alpha beta integrin hscs secreted mscs umbilical cord teeth bone marrow mice injection recombinant human mfge anti fibrotic effects comparable hpucmsc secretome reducing extracellular matrix deposition hsc activation injection antibody mfge reduced anti fibrotic effects hpucmsc secretome mice levels mfge reduced cirrhotic liver tissue patients compared controls conclusions mfge anti fibrotic protein msc secretomes strongly inhibits tgf beta signaling reduces extracellular matrix deposition liver fibrosis mice
dendritic cell function modulated stromal cells including fibroblasts although poorly understood signals delivered crosstalk substantially alter dendritic cell biology well illustrated release tnf alpha beta activated dendritic cells promoting pge secretion stromal fibroblasts instructs dendritic cells regulate key polarizing cytokine previously showed ionizing radiation inhibited production human dendritic cells vitro present study investigated hypothesis dendritic cell fibroblast crosstalk overcomes suppressive effect ionizing radiation support appropriately polarized responses radiation markedly suppressed secretion activated dendritic cells without adversely impacting viability consequently inhibited generation responses cytokine suppression ionizing radiation selective effect beta tnf alpha modest decrease secretion coculture fibroblasts augmented secretion irradiated dendritic cells increased responses importantly contrast dendritic cells irradiated fibroblasts maintained capacity respond tnf produce pge thus providing key intermediary signals successful dendritic cell fibroblasts crosstalk summary stromal fibroblasts support polarizing cytokine production dendritic cells would otherwise suppressed irradiated microenvironment potential ramifications understanding immune response local radiotherapy findings underscore need account impact microenvironmental factors including stromal cells understanding control immunity
cytoplasmic male sterility exists widely natural populations welsh onion allium fistulosum makes possible breed many male sterile lines heterosis utilization unfortunately breeding cytoplasmic male sterility welsh onion little progress due limitation biological characteristic traditional selection approach study feasibility efficiency utilizing marker assisted selection male sterile lines welsh onion one scar marker scs one rapd marker could distinguish cytoplasm several welsh onion cultivars identified two markers confirmed southern blotting used screen cytoplasm individual plants seven welsh onion cultivars study male sterile fertile plants evaluated aceto carmine dying frequency cytoplasmic plants maintainer genotype calculated seven open populations welsh onion minimum number plants needed identify maintainer evaluated reliable results showed decrease crosses self crosses identifying maintainer genotype could achieved marker assisted selection compared traditional selection method proved molecular markers could precisely identify cytoplasmic types individually performed one generation cross two generations testcrosses self crosses finally several maintainer genotype plants selected help two markers seven cultivars screened markers could assist accelerate sterile maintainer lines selection less labor cost
autophagy essential cellular pathway sequesters various cytoplasmic components including accumulated proteins damaged organelles invading microorganisms delivers lysosomes degradation function autophagy reported various tissues systems including role regulation cellular immunity autophagy plays fundamental role various stages cell maturation regulates thymocyte selection generation cell repertoire presenting intracellular antigens mhc class molecules autophagy crucial metabolic regulation cells therefore supports cell survival homeostasis particularly activated mature cells furthermore deletion specific autophagy related genes induces several immunological alterations including differentiation activated cells regulatory memory natural killer cells review emphasize impact autophagy cell development activation differentiation pivotal adaptive immune system
vesicular transport pathways membrane proteins lipids internalized externalized transported within cells bulk diffusion single molecules embedded membrane small vesicles thin tubules formation transport carriers follows sequential events membrane bending fission donor compartment transport eventually fusion acceptor membrane similar sequence involved internalization drug gene carriers inside cells membrane shaping events generally mediated proteins binding membranes mechanisms behind biological processes actively studied context cell biology biophysics bin amphiphysin rvs bar domain proteins ideally suited illustrating simple soft matter principles account membrane deformation proteins review experimental methods corresponding theoretical models measure proteins affect mechanics shape membranes detail show experimental method employing optical tweezers pull tube giant vesicle may give important quantitative insights mechanism proteins sense generate membrane curvature mechanism membrane scission article part themed issue soft interfacial materials fundamentals formulation
amphibians first terrestrial vertebrates offer window early major histocompatibility complex mhc evolution characterized mhc class two korean amphibians asiatic toad bufo gargarizans japanese tree frog hyla japonica found least four transcribed mhc class mhc loci highest number confirmed anuran date furthermore identified mhc transcripts terrestrial adults possibly aquatic larvae species conducted phylogenetic analysis based mhc sequence data found gargarizans japonica cluster together superfamily nobleobatrachia identified three supertypes shared two species results reveal substantial variation number mhc loci anurans suggest certain supertypes particular physiochemical properties may confer pathogen resistance elsevier ltd rights reserved
aim study expression collagen transcription factor specificity protein transforming growth factor beta tgf beta downstream target reveal impact tgf beta signaling pathway collagen remodeling myopic sclera methods seventy five week old guinea pigs randomly divided normal control form deprivation myopia fdm self control groups fdm induced different times using coverage translucent latex balloons fdm recovery performed treatment changes refractive power axial length measured immunohistochemistry reverse transcription polymerase chain reaction used evaluate dynamic changes collagen expression sclera guinea pigs emmetropia experimental myopia relationship collagen levels analyzed results fdm group refractive power gradually changed week weeks respectively indicating deepening myopia axial length increased week weeks mrna protein expression collagen sclera fdm group lower control groups reduction eye coverage time dependent furthermore correlation collagen regulation myopic sclera observed conclusion data indicate transcription factor may involved regulation type collagen synthesis degradation myopic sclera remodeling suggesting tgf beta signaling plays role development progression myopia
telomere repetitive dna structure chromosomal ends stabilizes chromosome structure prevents harmful end end recombinations telomere length somatic cells becomes shorter aging end replication problem telomere shortening accelerated pathophysiological conditions including daily mental stress living parkinson disease causes physical mental stress therefore authors hypothesized telomere length somatic cells shortened excessively patients order detect associated somatic telomeric alterations telomere length subtelomeric methylation status peripheral leukocytes patients assessed southern blotting using methylation sensitive insensitive isoschizomers results demonstrated peripheral leukocytes japanese female patients bore fewer long telomeres proportional increase hypomethylated subtelomeres short telomeres comparison healthy controls study indicates neurodegeneration associated telomeric subtelomeric structural alterations occur structural telomere altertions likely occur secondary acceleration aging associated telomeric changes accelerated loss cells bearing short telomeres
rhodanese domain proteins rdps widespread plants organisms biological roles mostly unknown report novel rdp chlamydomonas single rhodanese domain predicted chloroplast transit peptide protein produced escherichia coli tag lacking terminal transit peptide purification found rhodanese activity vitro also used elicit antibodies western blot analysis showed native chlamydomonas protein migrated slower sds gels apparent kda predicted size kda fractionated chloroplasts assess function vivo tandem rnai approach used generate chlamydomonas strains reductions mrna similar kda protein strains showed reduced growth trophic conditions sensitive even moderate light properties reminiscent chloroplast translation mutants pulse labeling presence cycloheximide indicated chloroplast protein synthesis broadly reduced rnai strains transcript analysis pcr northern blotting indicated effect mainly translational results identify novel rhodanese like protein named crlt required maintain chloroplast translation
several human diseases caused metabolism defects discovering mechanisms govern onset progression human metabolism related diseases straightforward process computational approaches flux balance analysis successfully used extract useful knowledge metabolic dysregulation processes genome scale network models work propose novel approach integrates constraint based techniques model checking methods aim extract relevant qualitative information metabolic network model case study applied methodology simulation analysis primary hyperoxaluria type inherited disease lack particular liver enzyme causes kidney accumulate excessive amounts oxalate
gene encoding putative pectinesterase bacillus licheniformis dsm cloned expressed escherichia coli resulting recombinant enzyme blipme purified characterized pectin methylesterase enzyme showed maximum activity degrees blipme able release methylesters lime pectin methylesters sbps blipme efficiently methylesterifies lemon pectins sbps blockwise manner quite tolerant towards acetyl groups present within sbps detailed analysis blipme modified pectins using hilic msn classical calcium reactivity measurement showed enzyme generates pectins low methylesterification lime sbp high acetyl content sbp creating blocks nonmethylesterified galacturonic acid residues high activity blipme towards highly methylesterified acetylated pectins makes novel esterase efficient removing methylesters highly esterified beet pectin compared pmes aspergillus niger pme elsevier ltd rights reserved
experimental epidemiological evidence suggests consumption hydrolyzable carbohydrate hcho grain horses important risk factor colic common cause equine mortality unknown whether small intestinal capacity digest hcho absorb monosaccharides limiting even horses adapt increased carbohydrate load investigated changes brush border membrane carbohydrate digestive enzymes glucose absorptive capacity horse small intestine response increased hcho expression glucose transporter sglt assessed western blotting immunohistochemistry northern blotting qpcr dependent glucose transport glucose transport rates sglt protein mrna expression fold higher jejunum fold higher ileum horses maintained hcho enriched diet compared pasture forage activity disaccharidases unaltered diet well controlled study determined sglt expression duodenal ileal biopsies horses switched gradually month period low bwt day high hcho bwt day diets known composition show sglt expression enhanced time fold duodenum fold ileum study important implications dietary management horse
grain amaranth amaranthus hypochondriacus abundant oxalate secrete oxalate aluminium stress however features induced secretion organic acid anions potential genes responsible secretion poorly understood induced secretion grain amaranth roots characterized ion charomatography enzymology methods suppression subtractive hybridization ssh together quantitative real time pcr qrt pcr used identify regulated genes potentially involved secretion results showed grain amaranth roots secrete oxalate citrate response stress secretion pattern however differs oxalate citrate neither lanthanum chloride cadmium chloride induced secretion total genes identified regulated six genes considered potentially involved secretion expression pattern gene belonging multidrug toxic compound extrusion mate family ahmate close agreement citrate secretion expression gene encoding tonoplast dicarboxylate transporter four genes encoding atp binding cassette transporters differentially regulated stress expression pattern correlated well oxalate secretion results reveal secretion pattern oxalate citrate grain amaranth roots stress also provide genetic information useful characterization genes involved toxicity tolerance mechanisms
homolog one costimulatory molecules family reported widely expressed multiple types cancer tissues important tumor progression poor prognosis however role esophageal precancerous lesions elucidated yet present study model esophageal squamous cell carcinogenesis established cbl mice nitroquinoline oxide nqo drinking water mice changes expression whole pathological process investigated hematoxylin eosin staining results demonstrated pathological stage exacerbated increase time nqo mediated carcinogenesis induction pathological features similar observed humans immunohistochemistry results revealed expression upregulated positively correlated pathological stage well infiltration cluster differentiation macrophage cells addition messenger rna expression increased esophagi model mice compared control mice positively associated gene expression interleukin signal transducer activator transcription stat according results reverse transcription quantitative polymerase chain reaction analysis similarly protein expression upregulated esophageal tissues model mice comparison control mice positively associated expression stat phosphorylation conclusion present data suggested expression increased esophageal squamous cell carcinogenesis mice association stat signaling pathway activation
transgenic technology successfully used gene function analyses trait improvement cereal plants however usage limited woody plants especially difficult transform commercially viable hybrid poplar work efficient regeneration transformation system established production two hybrid aspen clones populus alba berolinensis populus davidiana bolleana plant transformation vector designed express reporter gene uida encoding beta glucuronidase gus driven cauliflower mosaic virus promoter used detect transformation event early stages plant regeneration optimize parameters may affect poplar transformation efficiency bacterium strain age leaf explant two major factors affect transformation efficiency addition thidiazuron tdz improved regeneration transformation efficiency transformation efficiency approximately alba berolinensis davidiana bolleana using system transgenic plants usually produced less month cultivation growth characteristics morphology transgenic plants identical untransformed wild type plants transgenes could inherited vegetative propagation confirmed pcr southern blotting pcr beta glucuronidase staining analyses establishment system help facilitate studies gene functions tree growth development genome level well introduction valuable traits aspen breeding
purpose evaluate effect fractionated irradiation tumor cells sensitivity ionizing radiation antineoplastic drugs examine potential early growth response egr inhibition sensitize tumor cells materials methods hepg cells subjected times gamma rays surviving cells named hepg respectively cells sensitivity irradiation chemotherapeutic drugs including cisplatin doxorubicin dox mitomycin mmc fluorouracil identified colony formation assay mmt method respectively quantitative real time polymerase chain reaction qpcr analysis utilized compare difference gene expression radioresistant cells parental cells small interfering rna system implemented inhibit endogenous egr expression radiation resistant cells western blot employed identify possible mechanism egr regulates cells radiosensitivity results induced cross resistant mmc tumor cells along reduction ovarian cancer disabled homolog doc dab interactive protein dabip expression egr gene upregulated treated cells hand downregulation egr gene expression sensitized radioresistant cells accompanied dabip overexpression stat inactivation addition kappa inhibitor bay enhanced resistant cells radiosensitivity chemosensitivity conclusions conventionally higher risk forming acquired radioresistance arr vitro egr gene targeted drug design could effective strategy overcome dabip dysregulation induced arr tumor patients
small molecule probes suitable selective specific fluorescence imaging important low concentration intracellular reactive sulfur species cysteine cys pose challenge chemical biology wepresent readily available fast response fluorescence probe chcq chloro hydroxyl phenyl chloro quinazolinone chcq fluorophore acrylate group functional moiety enables high selectivity high sensitivity detecting cys solution biological system specifically reacted cys probe undergoes seven membered intramolecular cyclization released fluorophore chcq excited state intramolecular photon transfer effect highly fluorescent insoluble aggregate formed facilitate high sensitivity high resolution imaging results showed probe chcq affords remarkably large stokes shift detect cys physiological condition interference analytes moreover probe proved excellent chemical stability low cytotoxicity good cell permeability design probe provides novel potential tool visualize localize cysteine bioimaging live cells would greatly help explore various cys related physiological pathological cellular processes cell biology diagnostics
pancreatic ductal adenocarcinoma pdac characterized multiple alterations tgf beta signaling pathway yes associated protein yap interacts smad thereby influencing tgf beta signaling present study expression yap pdac analyzed order elucidate potential role molecule pathogenesis pancreatic cancer yap mrna expression levels human pancreatic tissue samples cell lines analyzed northern blotting quantitative pcr immunohistochemistry carried localize quantify yap expression relation smad expression smad mutations effects tgf beta smad yap mrna expression analyzed quantitative pcr enhanced expression yap mrna identified northern blotting quantitative pcr pdac comparison normal pancreas fold increase chronic pancreatitis fold increase normal pancreas yap absent acinar cells large ducts islet cells exhibited moderate strong immunoreactivity centro acinar cells ductules tubular complexes like lesions pdac also exhibited strong staining contrast weak moderate yap immunoreactivity present cancer cells correlation yap immunostaining smad staining smad mutations cancer samples tgf beta strongly induced smad mrna colo panc cells slightly induced yap rnrna colo cells conclusion yap expressed mainly centroacinar small ductal cells normal pancreas pdac yap present tubular complexes lesser extent cancer cells together known function yap different growth differentiation regulating pathways suggested gene plays role normal diseased pancreas
scopeproteins constitute important part human diet understanding effects different dietary protein sources human metabolism sparse aimed elucidate diet induced metabolic changes untargeted urinary metabolomics four weeks intervention lean seafood nonseafood diets shown lean seafood intake reduces urinary excretion metabolites involved mitochondrial lipid energy metabolism possibly facilitating higher lipid catabolism healthy subjects methodsin randomized controlled trial crossover design healthy subjects consumed two balanced diets varied main protein sources weeks morning spot urine samples collected intervention period untargeted metabolomics based nmr spectroscopy analyses applied characterize urinary metabolic response interventions resultsthe lean seafood diet period reduced urinary level carnitine dimethylheptanoylcarnitine methyl pyridone carboxamide relative nonseafood period dietary analysis revealed higher urinary level trimethylamine oxide lean seafood diet period guanidinoacetate methylhistidine nonseafood diet period related endogenous content compounds diets conclusionsour data reveal weeks lean seafood intake reduces urinary excretion metabolites involved mitochondrial lipid energy metabolism possibly facilitating higher lipid catabolism healthy subjects lean seafood intake
effects heat induced denaturation whey protein isolate wpi enzymatic breakdown alpha caseinomacropeptide cmp beta beta observed hydrolysis proceeded degree hydrolysis unheated heat treated degrees min wpi dispersions hydrolysis denatured wpi favoured generation higher levels free essential amino acids lysine phenylalanine arginine compared unheated substrate identified distinct peptides identified denatured wpi hydrolysate majority derived beta mapping detected regions alpha beta cmp enabled specific cleavage points associated certain serine endo protease activities outcomes study emphasise combined approach substrate heat pre treatment enzymology may used influence proteolysis attendant opportunities targeting unique peptide production amino acid release published elsevier ltd
cardiac differentiation human pluripotent stems cells hpscs typically carried suspension cell aggregates conventional aggregate formation hpscs involves dissociating cell colonies smaller clumps size control clumps crudely controlled pipetting cell suspension desired clump size achieved one main challenges conventional aggregate based cardiac differentiation hpscs culture heterogeneity spatial disorganization lead variable inefficient cardiomyocyte yield others previously reported human embryonic stem cell hesc aggregate size modulated optimize cardiac induction efficiency addressed challenge employing scalable microwell based approach control physical parameters aggregate formation specifically aggregate size shape method describe consists forced aggregation defined hpsc numbers microwells subsequent culture aggregates conditions direct cardiac induction protocol readily scaled depending size number wells used using method consistently achieve culture outputs cardiomyocyte frequencies greater
dravet syndrome genetic encephalopathy characterized severe seizures prominent morbidities physical intellectual disabilities patients carry scna mutation sodium channel voltage gated type alpha subunit although numerous anti epileptic drugs entered market since drugs often fail adequately control seizures patients nonetheless current clinical data shows significant seizure reduction patients treated serotonergic hydroxytryptamine drug fenfluramine recent preclinical research confirmed anti epileptiform activity homozygous scna mutant zebrafish larvae mimic well explored anti epileptiform mechanisms investigating whether selective agonists antagonists specific receptor subtypes able counteract induced inhibition seizures abnormal brain discharges observed scna mutants show antagonists htd htc receptor subtypes able respectively notably hta antagonist ketanserin addition exploring mechanism action beyond serotonergic profile found anti epileptiform brain activity significantly abolished administered combination sigma agonist pre study therefore provides first evidence involvement sigma receptor mechanism show level neurotransmitters dopamine noradrenaline nad head homogenates altered treatment whereas aminobutyric acid gaba glutamate levels interest nad decreasing drugs employed successfully treatment neurological diseases including epilepsy effect could contribute therapeutic effect compound summary hypothesize anti epileptiform activity originates htd htc agonism likely also ability block sigma receptors findings help better understanding pharmacological profile compounds critical applicability treatment possibly also drug resistant epilepsies
crosstalk cells macrophages vital role protection infections tumor development however macrophages tumor resemble phenotype present effect cells less clear study investigated whether tumor associated macrophages tams role altering cell function phenotype using vitro cocultures murine cells peritoneal bone marrow derived polarized macrophages tams isolated spontaneous mouse breast tumors report peritoneal bone marrow derived macrophages well tams substantially inhibit cell activation concordant cytotoxicity tumor cells mechanism inhibition found require contact respective cell types macrophages tams producers immunosuppressive cytokine tgf beta inhibition tgf beta restored cytotoxicity cells contact macrophages implicating tgf beta mechanism cell inhibition addition affecting cell function tams also induced low cdb high exhausted cell phenotype corresponds reduced activation cytotoxicity observed study reveals novel implication tams tumor associated inhibition cell function demonstrating capacity directly alter cell cytotoxicity phenotype contact dependent mechanism involving tgf beta findings identify interaction cells tams prospective therapeutic target enhance cell effector function effective cell cancer therapies
characterized isolates reduced susceptibility carbapenems acinetobacter spp proteus mirabilis five escherichia coli one morganella morganii one enterobacter cloacae one providencia rettgeri one pseudomonas aeruginosa hospital sofia bulgaria different lactamase genes identified polymerase chain reaction sequencing bacterial strain typing performed enzymatic macrorestriction pulsed field gel electrophoresis pfge typing well multilocus sequence typing selected isolates majority acinetobacter baumannii one acinetobacter pittii isolate harbored carbapenemase genes bla oxa bla oxa two baumannii contained genes pfge typing baumannii showed presence nine different clones belonging eight sequence types molecular characterization remaining isolates confirmed presence one ndm producing coli clone five isolates one mirabilis clone isolates vim cmy furthermore ndm identified rettgeri morganii vim aeruginosa isolate permanent introduction oxa carbapenemase producing baumannii clones hospital repeated occurrence one vim producing mirabilis one ndm producing coli clone period year concern requires intensified investigations
absorption metabolism cis beta carotene beta studied three subjects single oral dose subjects given beta carotene mean cis beta carotene trans beta carotene dose substantial concentrations trans beta carotene beta trans retinol retinol low concentrations cis beta carotene cis beta saponified plasma dosing determined hplc isotope ratio mass spectrometry evidence appreciable absorption cis retinol determine proportion beta retinol derived beta second set studies subjects performed isomeric composition except labeling trans beta carotene dose results indicated plasma beta retinol observed dose derived beta concentrations beta observed excess derived trace amounts beta dose indicated significant proportion beta dose isomerized beta entering bloodstream although precise quantitative estimates extent isomerization cis beta carotene could made apparent cis trans isomerization cis beta carotene trans beta carotene contributed near absence postprandial plasma cis beta carotene oral administration humans observation different ratios beta carotene retinol two dosing protocols suggests isomerization occur exclusively uptake intestinal mucosa results indicate isomerization ingested cis beta carotene secretion bloodstream limits potential supply cis retinoids tissues increases vitamin value cis beta carotene
current methods monitoring insulin culture limited soluble insulin secretions lysates synthetic gene reporter analyses present insulin specific cell enzyme linked immunosorbent assay cell elisa assess relative intracellular insulin protein content adherent cultures normalized cell density immunocytochemical verification insulin expressing cells within identical cultures protocol optimized validated using insulin expressing cell line ins confirming direct relations intracellular insulin content insulin expressing cell density glucose exposure dependent manner utility demonstrated identifying multiple ins clones lowly expressing insulin following lentiviral particle delivery interference rna intended regulate one insulin gene directed transcription factors mafa cell elisa also applied monitor insulin content within partially dissociated primary mouse islet cultures technique allows first time routine analysis intracellular insulin protein vitro suitable investigating islet cell biology means multiple parameter screening elsevier inc rights reserved
aim characterize formation urinary elimination metabolites methamphetamine humans methods subject six session double blind placebo controlled balanced crossover design study formation metabolites para hydroxymethamphetamine poh amphetamine amp determined urine intravenous doses racemic placebo parent drug metabolite levels urine plasma measured gas chromatography mass spectrometry pharmacokinetic parameters calculated noncompartmental models using winnonlin results approximately threefold enantioselectivity difference elimination observed amp dose converted amp amp furthermore less poh excreted urine compared poh correspondingly excretion less conclusions metabolism enantioselective formation amp highest isomer selectivity greater percentage converted poh amp formation poh less affected enantiomer administered suggesting urine poh may stable biomarker metabolism
congenital myopathies including central core disease ccd multi minicore disease mmd centronuclear myopathy cnm nemaline myopathy congenital fibre type disproportion cftd genetically heterogeneous group early onset neuromuscular conditions characterized distinct histopathological features associated substantial individual societal disease burden appropriate supportive management substantially improved patient morbidity mortality currently cure recent years seen exponential increase genetic molecular understanding conditions leading identification underlying defects proteins involved calcium homeostasis excitation contraction coupling thick thin filament assembly function redox regulation membrane trafficking autophagic pathways based findings specific therapies currently developed already approaching clinical trial stage despite undeniable progress therapy development faces considerable challenges considering rarity diversity specific conditions size complexity genes proteins involved present review summarize key genetic histopathological clinical features specific congenital myopathies outline therapies already available currently developed context known pathogenic mechanisms relevance newly discovered molecular mechanisms novel gene editing strategies future therapy development discussed elsevier ltd rights reserved
hundreds intracellular peptides neither antigens neuropeptides present mammalian cells tissues peptides correspond fragments cytosolic nuclear mitochondrial proteins proteasome inhibition affects levels intracellular peptides human cell lines effect immuneproteasome expression intracellular peptide profile evaluated functional significance investigated expression immuneproteasome hela cells induced interferon gamma treatment relative concentrations intracellular peptides compared control cells using isotope labeling electron spray mass spectrometry one peptides identified vgseliqky corresponds amino acids human atpase regulatory subunit peptide increased extracts hela cells treated interferon gamma compared control cells vitro increased chymotrypsin trypsin caspase like proteasome activities vivo covalently linked cell penetrating peptide potentiated ability interferon gamma stimulate expression immuneproteasome beta subunit increase proliferation cells cell penetrating peptide construct also improved positively modulated secondary igg anti bovine serum albumin immune responsiveness elicited high antibody responder mice together results suggest functional intracellular peptide potentiate interferon gamma activity biological significance functional identification advances understanding regarding bioactive peptides generated limited proteolysis within cells elsevier rights reserved
background year marked end united nations millennium development goals aimed halting reversing worldwide tuberculosis emergence drug resistance major challenge worldwide control aim study give bibliometric overview publications multi extensively totally drug resistant methods scopus database used retrieve articles multidrug resistant mdr extensively drug resistant xdr totally drug resistant tdr tuberculosis study period number publications top productive countries institutions citation analysis authorships international collaboration active authors active journals retrieved analyzed results total journal articles retrieved mean citations per article index retrieved data number publications showed three fold increase study period compared less two fold increase tuberculosis research study period stratified number publications united states america ranked first switzerland ranked first productivity per million people south africa ranked first productivity stratified per one trillion gross domestic product three high burden countries hbc mdr india china south africa present top productive countries high percentage international collaboration seen among hbc mdr except plos one journal active journals publishing articles mdr xdr tdr infection related fields general medicine top cited articles published prestigious journal lancet new england journal medicine themes top cited articles diverse ranging molecular biology diagnostic tools infection hiv results new anti drugs conclusion publications mdr xdr tdr increasing past decade international collaboration common many low resourced african asian countries benefit research leading new diagnostic screening technology exchange expertise ideas technology paramount importance field
objective investigated expression annexin anxa human cholangiocarcinoma cca cell line effect proliferation migration apoptosis human cca cells materials methods expression anxa detected fluorescent quantitative reverse transcriptase polymerase chain reaction qrt pcr western blotting method human cca cell lines qbc rbe shrna plasmids anxa silencing anxa anxa anxa negative control plasmid constructed infect qbc cells infection efficiency expression anxa apoptosis cell cycle qbc cell measured separately results expression anxa qbc cell significantly higher rbe cell expressed anxa protein qbc cell qbc cell treated rnai significantly lower qbc qbc cell qbc cells qbc cell treated scramble plasmid ratio phase cells apoptosis rate increased qbc cell proliferation activity invasion ability decreased qbc cell compared qbc qbc cells conclusions anxa play important role migration apoptosis cca cells inhibiting expression anxa significantly reduce proliferation migration invasion ability qbc cells increase apoptosis qbc cells
standard polymerase chain reaction pcr protocols amplify relatively small fragments precluding use approach examining gross rearrangements dna using combinations dna polymerases feature either good polymerase activity error correction abilities possible extend length dna fragment amplified long pcr protocols allowed development rapid convenient ways analyse large scale rearrangements dna many cases superseded alternative approaches southern blotting protocol described chapter illustrates key points considered developing long pcr protocol
purpose review wasting diseases characterized progressive deterioration nutritional status negatively influences patients outcome better understanding pathogenic mechanisms wasting may lead effective therapies tryptophan metabolism unique features suggesting critical role influencing human metabolism normal pathological conditions recent findings disease inflammatory response favours local depletion essential amino acid tryptophan thereby inhibiting cellular proliferation tryptophan depletion may also mediate immunotolerance foreign antigens contrast brain accumulation tryptophan contributes wasting increasing oxidative stress hypothalamic serotonin neurotransmission thereby triggering onset sickness behaviour followed depressive like behaviour summary tryptophan metabolism critical mediating number important biological responses restoring tryptophan metabolism may well result enhanced recovery disease
enterococcus faecalis appears many tooth root infections eliminated root canal therapy reside tooth root canals surrounding bone species may vegetate bone extraction infected tooth colonize dental implant placement healed site colonization may cause fixture loss marginal bone loss colonizations generally multibacterial pathogenic properties shared via plasmids however faecalis detectable culture techniques thus missed usually dominant species infections nonetheless faecalis may keystone player dental implant bone loss peri implantitis faecalis may pathogenic determinant particular peri implantitis infection multiple species infection
present paper deals problem voltammetric determination mixture amine type antioxidant phenyl naphthylamine pna phenol type antioxidant butylated hydroxytoluene bht oil matrix method linear sweep voltammetry using gold working electrode attention focused effect large excess pna curves anodic oxidation bht found tenfold excess pna disturbs determination phenol type antioxidant adopted supporting electrolyte case necessary reduce content transformation corresponding nitrosamine reaction nitrous acid rate constants reaction determined two different concentrations pna
interferon inducible transmembrane protein ifitm family proteins antivirus factors present study examined expression pattern chicken ifitm using quantitative reverse transcription polymerase chain reaction adult chickens ifitm levels markedly lower ifitm exhibits antivirus activity hand ifitm expressed levels similar ifitm embryonic organs primordial germ cells embryos expressed high levels ifitm gradually decreased time interferon stimulation embryonic fibroblast cells enhance expression ifitm forced expression ifitm slightly inhibited infectivity vsv pseudotyped lentiviral vector furthermore cell fusion inhibited ifitm hela cells transfected vsv expression vector treated low buffer although remains unclear whether ifitm inhibits viral infections physiological conditions results suggest chicken ifitm exhibits antivirus activity
unravelling molecular mechanisms disease manifestations important understand pathologies symptom development plant science bacteria evolved different strategies manipulate host metabolism benefit bacterial manipulation often coupled severe symptom development death affected plants determining specific bacterial molecules responsible host manipulation become important field microbiological research identification bacterial molecules called effectors important elucidate function straightforward approach determine function effector identify proteinaceous binding partner natural host via yeast two hybrid screen normally host harbors numerous potential binding partners predicted sufficiently silico algorithm thus best choice perform screen hypothetical effector whole library expressed host proteins especially challenging causative agent uncultivable like phytoplasma protocol provides step step instructions dna purification phytoplasma infected woody host plant amplification potential effector subsequent identification plant molecular interaction partner screen even though screens commonly used trend outsource technique biotech companies offer service cost protocol provides instructions perform decently equipped molecular biology laboratory using standard lab techniques
nanoparticles nps possess unique physical chemical properties make appropriate various applications structural alteration metallic nps leads different biological functions specifically resulting different potentials generation reactive oxygen species ros amount ros produced metallic nps correlates particle size shape surface area chemistry ros possess multiple functions cellular biology ros generation key factor metallic induced toxicity well modulation cellular signaling involved cell death proliferation differentiation review briefly explained classes biomedical applications describe sources roles ros related biological functions vitro vivo furthermore also described roles metal induced ros generation stem cell biology although roles ros metallic related biological functions requires investigation modulation characterization metallic induced ros production promising application metallic nps areas regenerative medicine medical devices
genus warburgia belongs canellaceae small family tropical aromatic tree species important antibacterial antifungal medicinal qualities amongst many functions many published protocols nucleic acid isolation failed yield sufficiently good quality amounts analysis therefore developed simple fast ctab cetyl trimethyl ammonium bromide based extraction protocol routine isolation high quality nucleic acids good quality genomic dna gdna rna obtained suitable pcr amplification restriction endonuclease digestion southern blotting pcr respectively
background gut microbiota plays important role human metabolism previous studies suggest imbalance cause metabolic endotoxemia may linked weight gain insulin resistance purpose study investigate relationship gut microbiota composition lipopolysaccharide levels metabolic profile obese normal weight young subjects methods studied obese bmi normal weight subjects bmi aged years quantification intestinal bacteria performed real time pcr endotoxin units determined test qcl biochemical profile performed standard protocol spinreact results obese individuals bmi increased triglycerides total cholesterol ldl cholesterol obese subjects body temperature higher normal weight subjects found greater number clostridum leptum lactobacillus lower numbers prevotella escherichia coli obese group decrease coli associated increased risk lipopolysaccharide levels ranging positive correlation found serum lipopolysaccharides bmi triglyceride levels well waist circumference evident young obese females conclusion subclinical metabolic endotoxemia determined serum concentration lipopolysaccharides related smallest amount coli high triglyceride levels central adiposity obese young persons karger gmbh freiburg
introduction high success rate management medulloblastoma achieved western world exactly mirrored developing countries including india socio demographic differences health care disparity lack uniformity care resultant widespread variations clinical practice reasons may partly explain difference outcomes patients medulloblastoma require multi disciplinary team approach involving limited neuro radiology neurosurgery neuropathology molecular biology radiation oncology pediatric medical oncology rehabilitative services optimizing outcomes methods indian society neuro oncology isno constituted expert multi disciplinary panel adequate representation stakeholders prepare national consensus guidelines contemporary management medulloblastoma results minimum desirable well preferable though optional recommendations appropriate developed adopted pre surgical work including neuroimaging neurosurgical management including surgical principles techniques complications neuropathology reporting molecular testing contemporary risk stratification molecular era appropriate adjuvant therapy radiotherapy chemotherapy follow schedule medulloblastoma conclusions current document represents broad consensus reached amongst various stakeholders within neuro oncology community involved contemporary curative intent management children medulloblastoma provides general well specific guidelines recommendations adopted physicians health care providers across india achieve uniformity care improve disease related outcomes compare results institutions within country
microfluidics enabling technology cell biology chemical analysis combine attributes microfluidic device line solid phase extraction spe mass spectrometry analysis secreted metabolites living cells culture chip device constructed polydimethylsiloxane pdms contains reversibly sealed chamber perfusing cells multilayer design allowed series valves control chip injection loop downstream cell chamber operation similar six port valve valve collects sample diverts packed spe bed connected line treat samples prior analysis valve allows samples collected injected onto spe bed preventing exposure cells added back pressure spe bed organic solvents needed elute collected chemicals cultured murine adipocytes loaded cell chamber non esterified fatty acids nefas secreted cells monitored spe min intervals limit detection palmitoleic acid standard due multiplexed detection capabilities variety nefas detected upon stimulation isoproterenol forskolin secretion select nefas elevated average fold compared basal levels despite min delay sample injections device step towards miniaturized system allows automated monitoring identification variety molecules extracellular environment
calnexin integral membrane protein endoplasmic reticulum binds newly synthesized linked glycoproteins folding including mhc class molecule manuscript reports identification two unique cdna clones calnexin rainbow trout encode putative mature proteins respectively addition signal peptide sequence analysis revealed one two cdna clones encodes putative retention signal qeddl followed serine phosphorylation site conserved mammalian homologs amino acid sequence alignment illustrated conservation calnexin luminal domain consists globular domain copies southern blotting revealed least two copies calnexin gene trout genome northern blotting showed wide tissue distribution estimated kbp calnexin transcript additional minor transcript kbp expressed head kidney spleen pbls strongly rts importantly smaller transcript predominantly upregulated rts treatment calcium ionophore western blots calnexin detected primarily kda protein upon treatment kda band prominently expressed results suggest salmonids two differentiated versions calnexin gene encode proteins may diverged perform unique biological functions elsevier ltd rights reserved
since introduction colonoscopy played important role diagnostic therapeutic screening tool general colonoscopy regarded safe procedure complications may occur dreaded complications colonic perforation bacteremia postprocedure may occur although uncommon rarely results clinically significant complications patients ibd inflammatory bowel disease high risk population bacteremia may leads bowel wall overstepping bacteria regard report fatal case gas gangrene complicating colonoscopy polypectomy without bowel perforation healthy adult best knowledge two cases retroperitoneal gas gangrene associated colonoscopy polypectomy without bowel perforation described international literature none completed molecular biology analysis
non tuberculous mycobacteria ntm emerging opportunistic pathogens humans animals veterinary point view species induce cross reactive immune responses hamper diagnosis bovine tuberculosis btb livestock wildlife little information available ntm species circulating wildlife species south africa study determined diversity ntm isolated wildlife species south africa well botswana thirty known ntm species subspecies well unidentified ntm ntm closely related mycobacterium goodii mycobacterium smegmatis identified isolates cultured years using combination molecular assays viz pcr sequencing different mycobacterial house keeping genes well single nucleotide polymorphism snp analysis ntm identified study include following species isolated tissue tuberculosis like lesions absence mycobacterium tuberculosis complex mtbc implying potential role pathogens animals mycobacterium abscessus subsp bolletii mycobacterium gastri mycobacterium species closely related mycobacterium goodii mycobacteriurn smegmatis mycobacterium brasiliensis mycobacterium sinense jmd mycobacterium avium subsp avium mycobacterium mycobacterium bouchedurhonense mycobacterium septicum peregrinum mycobaterium brasiliensis mycobacterium gastri mycobacterium potential novel mycobacterium species closely related mycobacterium goodii found first time study potential pathogens animals mycobacterium simiae isolated sample originating tuberculin skin test positive reactor demonstrating potential elicit inappropriate immune responses animals may interfere diagnosis tuberculosis immunology mycobacterium abscessus subsp bolletti frequently detected ntm identified isolates ntm species also isolated animals showing pathological changes knowledge gained study contribute understanding ntm species circulating wild animals south africa pathogenic potential certain species whose role disease causation need examined well certain extent potential simiae hamper diagnosis btb
broad spectrum autoimmunity well described patients primary immunodeficiencies pids management autoimmune disease background pid particularly challenging given seemingly discordant goals immune support immune suppression growing ability define molecular underpinnings immune dysregulation facilitated novel targeted therapeutics review focuses mechanism based treatment strategies common autoimmune inflammatory complications pid including autoimmune cytopenias rheumatologic disease gastrointestinal disease aim provide guidance regarding rational use agents complex pid patient population authors published elsevier inc behalf american academy allergy asthma immunology open access article license
introduction blood brain barrier bbb dynamic biological interface actively controls passage substances blood central nervous system cns biological functional standpoint bbb plays crucial role maintaining brain homeostasis inasmuch deterioration bbb functions prodromal many cns disorders conversely bbb hinders delivery drugs targeting brain treat variety neurological diseases area covered article reviews recent technological improvements innovation field bbb modeling including static dynamic cell based platforms microfluidic systems use stem cells printing technologies additionally authors laid roadmap integration microfluidics stem cell biology holistic approach development novel vitro bbb platforms expert opinion development effective cns drugs hindered lack reliable strategies mimic bbb cerebrovascular impairments vitro technological advancements bbb modeling fostered development highly integrative quasi physiological vitro platforms support process drug discovery advanced vitro tools likely current understanding cerebrovascular modulatory mechanisms
purposes study determine extent acute session high intensity intermittent exercise hiie followed concurrent strength session conc increase systemic inflammatory cytokines chemokines whether eight weeks high intensity interval training plus concurrent strength training alters acute inflammatory response immune status ten recreationally active males aged years performed two experimental exercise sessions interspersed eight weeks hilt plus concurrent strength training experimental exercise session composed run treadmill maximal aerobic speed mas min passive recovery back squat exercises performed four sets exhaustion serum samples collected fasting pre hiie post hiie pre conc post conc min postexercise session comparison concurrent exercise sessions performed using repeated measure anova bonferroni post hoc necessary interleukin presented moment effect post conc significantly higher pre hiie post hiie min tendency found pre hiie post hiie difference mcp ira present effects condition moment interaction interleuldn presented moment interaction effects pre conc post conc significantly higher pre hiie interaction eight weeks concurrent training probably occurred post conc addition maintenance immune function observed therefore hiie concurrent strength exercise lead increase cytokines response eight weeks training program promoted antiinflammatory response acute session concurrent exercise elsevier ltd rights reserved
aim analyze ability nine different potentially probiotic bacteria induce maturation cytokine production human monocyte derived dendritic cells modcs methods cytokine production maturation modcs response bacterial stimulation analyzed enzyme linked immunosorbent assay elisa flow cytometric analysis facs respectively kinetics mrna expression cytokine genes determined northern blotting involvement different signaling pathways cytokine gene expression studied using specific pharmacological signaling inhibitors results studied bacteria induced maturation modcs dose dependent manner detailed analysis thermophilus ths breve lactis subsp cremoris arh indicated bacteria induced expression modc maturation markers hla class efficiently pathogenic bacteria however bacteria differed ability induce modc cytokine gene expression thermophilus induced expression pro inflammatory tnf alpha ccl type ifn gamma cytokines breve lactis also potent inducers anti inflammatory mitogen activated protein kinase mapk phosphatidylinositol kinase nuclear factor kappa kappa signaling pathways shown involved bacteria induced cytokine production conclusion results indicate potentially probiotic bacteria able induce modc maturation ability induce cytokine gene expression varies significantly one bacterial strain another wjg press rights reserved
trans retinoic acid biologically active derivative vitamin regulates numerous physiological processes concentration retinoic acid cells tightly regulated exact mechanisms responsible regulation completely understood largely enzymes involved biosynthesis retinoic acid fully defined recent studies using vitro vivo models suggest several members short chain dehydrogenase reductase superfamily proteins essential retinoic acid biosynthesis maintenance retinoic acid homeostasis however exact roles recently identified enzymes yet characterized properties known contributors retinoid metabolism better defined allow detailed understanding interactions retinoid binding proteins retinoid enzymes time studies needed clarify interactions cytoplasmic membrane bound proteins involved processing hydrophobic retinoid metabolites review summarizes current knowledge roles various biosynthetic catabolic enzymes regulation retinoic acid homeostasis outlines remaining questions field
striated muscles exhibit wide range metabolic activity levels heart diaphragm muscles continuous contractile performance requires life long function contrast skeletal muscles like longissimus muscle adapt metabolism resting different stages exercise aim study compare morphological features three muscles expression genes important energy metabolism therefore histochemical studies performed determination muscle fibre type composition oxidative glycolytic capacity assessed measuring isocitrate dehydrogenase icdh lactate dehydrogenase ldh activities mrna expression glucose transporter glut growth hormone receptor ghr amp activated kinase ampk alpha alpha subunits studied semiquantitative northern blotting heart slightly lesser extent diaphragm highly oxidative muscles characterised high expression oxidative muscle fibres icdh activity longissimus muscle exhibited highest percentage glycolytic fibres ldh activity glut mrna lowest heart reflecting dependency heart muscle fatty acids major energy source higher expression glut diaphragm indicated glucose important energy substrate oxidative muscle highest glut expression longissimus essential refilling glycogen stores exercise ampk subunits important stimulators glut protein insertion sarcolemma also highest expressed longissimus muscle indicating strong capacity adapt energy metabolism large changes energy demand interestingly ampk alpha subunit expression protein level strongly restricted muscle fibres containing type myosin muscle ghr mrna expression also highest longissimus muscle indicating enhanced effect growth hormone described diabetogenic could involved lower insulin sensitivity glycolytic muscles
rationale emphysema considerable variability severity distribution parenchymal destruction throughout lungs upper lobe predominant emphysema emerged important predictor response lung volume reduction surgery yet aside alpha antitrypsin deficiency genetic determinants emphysema distribution remain largely unknown objectives identify genetic influences emphysema distribution non alpha antitrypsin deficient smokers methods total subjects complete genotype computed tomography densitometry data copdgene genetic epidemiology chronic obstructive pulmonary disease copd non hispanic white african american eclipse evaluation copd longitudinally identify predictive surrogate endpoints genkols genetics chronic obstructive lung disease studies analyzed two computed tomography scan emphysema distribution measures difference upper third lower third emphysema ratio upper third lower third emphysema tested genetic associations study subjects separate analyses study population followed fixed effect metaanalysis single nucleotide polymorphism gene pathway based approaches used silico functional evaluation also performed measurements main results identified five loci associated emphysema distribution genome wide significance loci included two previously reported associations copd susceptibility near hhip near chrna three new associations near sowahb trappc kiaai gene set analysis silico functional evaluation revealed pathways cell types may potentially contribute pathogenesis emphysema distribution conclusions multicohort genome wide association study identified new genomic loci associated differential emphysematous destruction throughout lungs findings may point new biologic pathways expand diagnostic therapeutic approaches chronic obstructive pulmonary disease
kruppel like factors klfs family zinc finger transcription factors found many species recent studies shown klfs play fundamental role regulating diverse biological processes cell proliferation differentiation development regeneration note several klfs also crucial maintaining pluripotency hence linked reprogramming regenerative medicine approaches review crucial functions klfs mammalian embryogenesis stem cell biology regeneration revealed studies animal models also highlight klfs implicated human diseases outline potential avenues future research
blackcurrant fruits rich source biologically active anthocyanins little known anthocyanin content commonly consumed products processing affects absorption report whereas fresh frozen whole rich source anthocyanins containing total anthocyanins levels products substantially lower levels fresh fruit absorption excretion assessed volunteers consuming portion frozen whole total anthocyanins drink made diluting concentrated syrup total anthocyanins small quantities anthocyanins excreted urine fruit drink mean percent urinary yield detected plasma data indicate fresh frozen processed products rich sources anthocyanins regardless food source anthocyanins poorly bioavailable elsevier ltd rights reserved
mercaptopyruvate sulfurtransferase mst novel hydrogen sulfide synthesizing enzyme may involved cyanide degradation thiosulfate biosynthesis recent years considerable attention focused biochemistry molecular biology synthesizing enzyme contrast concerted attempts investigate changes expression synthesizing enzymes disease states investigate changes mst traumatic brain injury tbi possible role mice tbi model established controlled cortical impact system expression cellular localization mst tbi investigated present study western blot analysis revealed mst present normal mice brain cortex gradually increased reached peak first day tbi reached valley third day importantly mst colocalized neuron addition western blot detection showed first day post injury also autophagic peak indicated elevated expression importantly immunohistochemistry analysis revealed injury induced expression mst partly colabeled however colocalization mst propidium iodide cell death marker positive cells partly colocalized propidium iodide data suggested mst mainly located living neurons may implicated autophagy neuron involved pathophysiology brain tbi
purpose review human genetic studies successfully used identify genes pathways relevant human biology using genetic instruments composed loci associated human lipid traits recent studies begun clarify causal role major lipid fractions risk cardiometabolic disease recent findings causal relationship ldl cholesterol coronary disease firmly established remaining two major fractions recent studies found hdl cholesterol likely causal particle atherogenesis instead shifted causal focus triglyceride rich lipoproteins subsequent results refining view suggest triglycerides might causal instead may surrogate causal cholesterol content within fraction studies used similar approach address association lipid fractions risk type diabetes beyond genetic variation target statin medications reduced ldl cholesterol associated multiple genes encoding current prospective drug targets associated increased diabetic risk addition genetically lower hdl cholesterol genetically lower triglycerides appear increase risk type diabetes summary results future human genetic studies positioned provide substantive insights causal relationship lipids human disease highlight mechanisms important implications understanding human biology future lipid altering therapeutic development
purpose review purpose review summarize recent advances understanding complex immunology intestinal transplantation allograft rejection recent findings recent findings highlight importance intestinal microbiome intestinal homeostasis role newly discovered innate lymphoid cells intestinal transplantation addition role host antimicrobial responses pathogenesis inflammatory bowel diseases intestinal allograft rejection elucidated summary research complex immune system intestine continued reveal intricacies connections study performed making treatment intestinal transplant patients multifaceted interaction communication relationships areas microbiome innate lymphoid cells cells reveal possible targets therapy areas requiring ongoing research
sialic acids existing terminal sugars glycoconjugates play important roles various physiological pathological processes cell cell adhesion immune defense tumor cell metastasis inflammation sialyltransferases sts catalyze transfer sialic acid residues non reducing oligosaccharide chains proteins lipids using cytidine monophosphate acetylneuraminic acid cmp neuac donor elevated sialyltransferase activity leads overexpression cell surface sialic acids contributes many disease developments cancer inflammation therefore sialyltransferases considered potential drug targets disease treatment inhibitors sialyltransferases thus medicinal interest especially cancer therapy addition sialyltransferase inhibitors useful tool study sialyltransferase function related mechanisms review highlights recent development inhibitors sialyltransferases reported since inhibitors summarized eight groups sialic acid analogs cmp sialic acid analogs cytidine analogs oligosaccharide derivatives aromatic compounds flavonoids lithocholic acid analogs others article part special issue entitled physiological enzymology protein functions elsevier rights reserved
mitochondria many different functions important one oxidative phosphorylation originated endosymbiotic event bacterium archaeal host cell evolution protein import system marked boundary endosymbiotic ancestor mitochondrion true organelle control nucleus present day mitochondria proteins imported cytosol proces mediated hetero oligomeric protein complexes outer inner mitochondrial membranes review compare mitochondrial protein import best studied model system yeast parasitic protozoan trypanosoma brucei organisms phylogenetically remotely related despite fact mitochondrial protein import function species subunits import machineries conserved moreover yeast inner membrane protein translocases one specialized presequence containing one mitochondrial carrier proteins brucei single inner membrane translocase mediates import types substrates evolutionary implications findings discussed
background optimisation trypanosomosis control programs warrants good knowledge main vector animal human trypanosomes sub saharan africa tsetse fly important aspect tsetse fly population trypanosome infection prevalence determines intensity transmission parasite vector therefore conducted systematic review published studies documenting trypanosome infection prevalence field surveys laboratory experiments controlled conditions publications screened web science pubmed google scholar databases using four stage identification screening eligibility inclusion process prisma statement initial screened total studies reduced studies microscopic examination dissected flies dissection method remains used method detect trypanosomes thus constituted main focus analysis meta regression performed identify factors responsible high trypanosome prevalence vectors random effects meta analysis used report sensitivity molecular serological tests using dissection method gold standard results overall pooled prevalence confidence interval field survey laboratory experiment data respectively country year publication found significantly factors associated prevalence trypanosome infection tsetse flies alternative diagnostic tools applied dissection positive samples characterised low sensitivity information specificity available conclusion temporal spatial variation trypanosome infection prevalence field collected tsetse flies exists investigation real risk factors needed variation explained improving sensitivity determining specificity alternative diagnostic tools priority allow estimate prevalence trypanosome infection tsetse flies high throughput
differences esterase expression among human rhesus monkey cynomolgus monkey dog minipig rabbit rat mouse plasma identified using native polyacrylamide gel electrophoresis paraoxonase pon butyrylcholinesterase bche ubiquitous species highly expressed primates dogs whereas carboxylesterase ces abundant rabbits mice rats several unknown esterases observed minipig mouse plasma differences plasma esterases expression levels result species differences respect hydrolase activity differences characterized using several different substrates contrast high hydrolase activity found nitrophenylacetate pnpa substrate several hydrolase enzymes irinotecan carbamate compound resistant plasma esterases oseltamivir temocapril propranolol derivatives rapidly hydrolyzed mouse rat plasma highly active ces enzyme rabbit plasma ces hydrolyzed derivatives interestingly derivatives highly hydrolyzed monkey plasma bche whereas bche human dog minipig plasma showed negligible activity conclusion esterase expression hydrolyzing pattern dog plasma found closest human plasma differences considered selecting model animals preclinical studies wiley periodicals inc american pharmacists association pharm sci
order explore molecular mechanisms virulence genetic variance curvularia lunata maize atmt agrobacterium tumefaciens mediated transformation system established order create wide range insertional transformants lunata results showed germinating conidia ideal starting material transformation based optimised transformation condition transformation efficiency lunata dna improved greatly average transformation frequency high transformants per germlings southern blotting results randomly selected transformants showed unique hybridisation pattern predominant single copy insertions atmt library containing approximate transformants generated four types transformants screened terms growth rate sporulation mycelial pigmentation toxin production vitro library used identify genes involved virulence pathogen
goal work suppress expression acc synthase gene siam tulip curcuma alismatifolia gagnep cdna fragment encoding acc synthase alismatifolia gagnep isolated expression studies done isolate gene pair primers designed highly conserved motif acc synthases various plant species pcr product alismatifolia gagnep subcloned pgem easy vector resulting pca acsi sequencing sequence deduced amino acid sequence highly homologous acc synthases plants determine expression patterns pca acsi northern blot analysis showed expression pca acsi gene bracts curcuma highest expression observed days cutting flowers acsi subcloned pbi resulting pbi acsi transformed leaf tissues torenia foumieri retarded shoots alismatifolia gagnep via agrobacterium tumefaciens strain aglo putative transformants gene antisense orientation investigated pcr analysis gus assays southern blotting transgenic plantlets transferred pots containing soil cultivation growth chamber present transgenic plants grow happily greenhouse phenotypic investigation
objective evaluate role auto antibodies chinese patients primary secondary infertility routine clinical practice methods reviewed medical records infertile chinese patients either gender year old failed conceive months regular sexual intercourse without use contraception visited department gynaecology obstetrics renmin hospital wuhan university china january december undergone auto antibody estimation along routine antenatal screening tests immunological assay performed using dot immuno gold filtration assay positive case compared among patients primary secondary infertility results chart review study showed positive case anti sperm antibody asab significantly higher female primary male female patients primary infertility auto antibodies anti endometrium antibody emab anti ovary antibody aoab anti zona pellucida antibody azp anti cardiolipin antibody aca significantly higher compared patients secondary infertility moreover positive case auto antibodies significantly higher among female primary fertility secondary fertility control groups conclusion study results suggested involvement auto antibodies related reproduction system development primary infertility auto antibodies related reproduction significantly higher patients primary infertility implicated involvement auto immunological factors development infertility
ipomoelin gene ipo identified wound inducible gene ipomoea batatas expression stimulated methyl jasmonate meja hydrogen peroxide ipo protein also characterized defence related protein also carbohydrate binding protein study expression ipo used molecular probe study effects signal transduction ethylene confocal microscope monitored within cells northern blotting examined ipo expression presence channel blocker including diltiazem neomycin ruthenium red abolished increase cytosolic reduced ipo expression cells induced ethylene furthermore influxes ipo expression stimulated ethylene prohibited presence ethylene glycol bis aminoethyl ether tetraacetic acid egta results indicated influxes cytosol induced ethylene apoplast organelles required activating ipo expression however presence egta ethylene still stimulate ipo expression mechanical wounding failed therefore channels plasma membrane induced ethylene higher affinity stimulated wounding moreover addition ionophore raised cytosolic unable stimulate ipo expression findings showed ipo induction solely depend elevation cytosol necessary sufficient ipo expression application mitogen activated protein kinase kinase mapkk inhibitor prevent increasing cytosol induced ethylene inhibited ipo expression stimulated staurosporine sta protein kinase inhibitor conclusively elevation cytosolic ethylene may stimulate protein phosphatase mapkk finally activates ipo expression
activated channels play crucial role various physiological processes however role tmema vascular endothelial dysfunction hypertension unclear study investigated specific involvement tmema regulating endothelial function blood pressure underlying mechanism reverse transcription polymerase chain reaction western blotting coimmunoprecipitation confocal imaging patch clamp recordings tmema endothelial specific transgenic knockout mice used found tmema expressed abundantly functioned activated channel endothelial cells angiotensin induced endothelial dysfunction increase tmema expression knockout endothelial specific tmema significantly lowered blood pressure ameliorated endothelial dysfunction angiotensin induced hypertension whereas overexpression endothelial specific tmema resulted opposite effects results related increased reactive oxygen species production nox containing nadph oxidase activation nox pphox protein expression facilitated tmema angiotensin induced hypertensive challenge moreover tmema directly bound nox reduced degradation nox proteasome dependent degradation pathway therefore tmema positive regulator endothelial reactive oxygen species generation via nox containing nadph oxidase induces endothelial dysfunction hypertension modification tmema may novel therapeutic strategy endothelial dysfunction associated diseases
background recently identified porcine circovirus like virus smallest dna viral genome study identified viral genes corresponding mrna transcripts results rnas synthesized porcine kidney cells examined northern blotting pcr analyses eight virus specific rnas detected four mrnas open reading frames orfs encoded viral strand four orfs encoded viral strand proteins encoded orfs virus less amino acids length except encoded orf amino acids conclusions show complex viral transcription pattern infected cells
angiogenesis important component process atherosclerosis recently demonstrated vegf potent angiogenic growth factor increases rate atherosclerosis animal models significant body literature concerned ability polyphenols alter vegf signaling angiogenesis however potential polyphenols influence atherosclerosis result inhibiting vegf signaling vegf dependent angiogenesis considered chapter summarizes reviews existing literature concerning effects polyphenols vegf signaling angiogenesis atherosclerosis data suggest polyphenols inhibit vegf signaling well angiogenesis atherosclerosis via variety mechanisms cases physiologically relevant concentrations however lack published data studies polyphenol metabolites majority reports studies using aglycones supraphysiological concentrations data epidemiological studies show positive correlation polyphenol consumption reduced risk cardiovascular disease role specific compounds difficult determine future research focus establishing whether reported antiatherosclerotic effects polyphenol rich foods extracts due polyphenols inhibiting vegf signaling research required elucidate influence bioavailability metabolism combinations polyphenols found foods vegf signaling
background objectivethe goal periodontal therapy regenerate reconstruct damaged supporting tissues diseased teeth facilitate recovery physiological functions combination stem cell transplantation gene therapy offers viable method accelerating periodontal repair regeneration study role ephrinb ephb signaling pathway regulating osteogenic differentiation periodontal ligament stem cells pdlscs crosstalk pdlscs pre osteoblasts within culture investigated ephrinb transgenic expression pdlscs material methodspdlscs isolated premolar teeth teenage patients undergoing orthodontic treatment transfected transgenic hefnb gfp bsd vector empty vector gfp bsd vector pdlscs efnb pdlscs mct cultures vector pdlscs mct efnb pdlscs mct subjected osteogenic induction osteogenic differentiation efnb pdlscs vector pdlscs cultures assessed reverse transcription polymerase chain reaction alkaline phosphatase alp assay alizarin red staining protein expression levels ephrinb ephb phosphorylated ephrinb ephb analyzed western blot immunoprecipitation immunoprecipitation assays resultsalp assay alizarin red staining demonstrated higher alp activity increased mineralization efnb pdlscs vector pdlscs culture efnb pdlscs mct vector pdlscs mct reverse transcription polymerase chain reaction revealed expression human odonto osteogenic markers significantly enhanced efnb pdlscs compared vector pdlscs expression mouse odonto osteogenic markers significantly higher culture efnb pdlscs mct vector pdlscs mct ephb receptor activated phosphorylation osteogenic differentiation conclusionour data indicate transgenic expression ephrinb pdlscs could promote osteogenic differentiation via stimulation phosphorylation ephrinb ephb regulates cell communication pdlscs pdlscs pre osteoblasts within culture
background mucopolysaccharidosis also known hunter syndrome rare linked disease caused deficiency lysosomal enzyme iduronate sulfatase catalyses step catabolism glycosaminoglycans glycosaminoglycans accumulate within tissues affecting multiple organs physiologic systems clinical manifestations include neurologic involvement severe airways obstruction skeletal deformities cardiomyopathy disease variable age onset variable rate progression severe disease death usually occurs second decade life whereas patients less severe disease may survive adulthood enzyme replacement therapy intravenous infusions idursulfase emerged new treatment mucopolysaccharidosis type objectives evaluate effectiveness safety enzyme replacement therapy idursulfase compared interventions placebo intervention treating mucopolysaccharidosis type search methods searched cochrane cystic fibrosis genetic disorders group trials register date last search july also searched embase pubmed literature latino americana caribe ciencias saude lilacs date last search july selection criteria randomised quasi randomised controlled trials enzyme replacement therapy idursulfase compared intervention placebo options behavioral strategies transplantation data collection analysis two authors independently screened trials identified appraised quality papers extracted data main results one study patients met inclusion criteria although primary outcome review score height weight assessed study trial considered overall good quality following weeks treatment patients weekly idursulfase group demonstrated significant improvement rate compared placebo primary outcome distance walked six minutes basis sum ranks change baseline mean difference confidence interval every week idursulfase group also showed improvement significant compared placebo mean difference confidence interval weeks statistical significance difference per cent predicted forced vital capacity three groups absolute forced vital capacity significantly increased baseline weekly dosing group compared placebo mean difference confidence interval difference observed every week idursulfase group placebo addition liver spleen volumes urine glycosaminoglycan excretion significantly reduced baseline idursulfase dosing regimens idursulfase generally well tolerated infusion reactions occur idursulfase antibodies detected patients end study related smaller reduction urine glycosaminoglycan levels authors conclusions current evidence limited randomised clinical trial identified considered good quality failed describe important outcomes demonstrated enzyme replacement therapy idursulfase effective relation functional capacity distance walked six minutes forced vital capacity liver spleen volumes urine glycosaminoglycan excretion patients mucopolysaccharidosis type compared placebo available evidence included study literature outcomes improvement growth sleep apnoea cardiac function quality life mortality studies needed obtain information long term effectiveness safety enzyme replacement therapy
statin induced skeletal muscle damage rats associated reduction resting sarcolemmal chloride conductance gcl clc chloride channel expression drugs also affect clc regulation increasing protein kinase pkc activity phosphorylate close channel also intracellular resting calcium restca level increased similar alterations observed skeletal muscles aged rats suggesting higher risk statin myotoxicity verify hypothesis performed weeks atorvastatin treatment months old rats evaluate clc channel function two intracellular microelectrodes technique well transcript protein expression different genes sensitive statins quantitative real time pcr western blot analysis restca measured using fura imaging histological analysis muscle sections performed results show marked reduction resting gcl agreement reduced clc mrna protein expression atorvastatin treated aged rats respect treated adult animals observed changes myocyte enhancer factor mef expression may involved clc expression changes activity pkc also increased modulate gcl treated aged rats parallel marked reduction expression glycolytic mitochondrial enzymes demonstrates impairment muscle metabolism worsening restca histological features found statin treated aged animals findings suggest strong reduction gcl alteration muscle metabolism coupled muscle atrophy may contribute increased risk statin induced myopathy elderly elsevier inc rights reserved
lipases ubiquitous hydrolases carboxyl ester bond water insoluble substrates triacylglycerols phospholipids insoluble substrates acting aqueous well low water media thus considerable physiological significance high interest also industrial applications hydrolysis reaction follows two step mechanism interfacial activation adsorption enzyme heterogeneous interface subsequent enhancement lipolytic activity among lipases candida antarctica lipase calb never shown significant interfacial activation closed conformation calb never reported leading conclusion behavior due absence lid regulating access active site lid open closed conformations protonation states observed crystal structure calb resolution open closed states atomic resolution allows relating protonation conformation indicating role asp lys conformation alteration findings explain lack interfacial activation calb offer new elements elucidate mechanism consequent implications catalytic properties classification lipases
inflammation joint liberation phospholipids cell membranes represents first step inflammation cascade action phospholipase split arachidonic acid free arachidonic acid metabolised two enzymes lipooxygenase cyclooxygenase generate group prostanoids leukotrienes first active proinflammation compounds starting whole proces inflammation verified flavonoids flavans contained american patent univestin really able interrupt pathway inhibition enzymes flavonoids naturally occurring chemicals give color plants found plants fruits grains nuts vegetables antioxidant capacity eliminates action cyt also prevents origine epoxides cancerogenesis inositolhexaphosphate found substantial amounts whole grains cereals legumes nuts seeds well inositol contained mammalian cells wherein important regulating vital cellular function signal transduction cell proliferation differentation inositol contend product inocell additional evidence inositol alone may enhance anti cancer effect beside decreasing cellular proliferation also causes differentation malignant cells ofen resulting conversion normal phenotype leads starting apoptose cells inocell greatly enhances cell activity regulates cell growth strong antioxidant capacity suggestion demonstrate succesfful efects inocell concrete causes patients various types cancerogenesis peptic ulcer disease gastric cancer ability vaccinium macrocarpon north american cranberry prevent bacterial adhesion used advantage prevention urinary tract infections recently described prevention adhesion bacteria responsible oral infections stomach ulcers well helicobacter pylori
background alms differences hepatic organic anion transporters compared rats identify causative factor early stage acute hepatic failure hepatectomy methodology male wistar rats weeks randomly assigned one two groups sacrificed hours posthepatectomy expression bile salt export pump bsep multidrug resistance proteins mrp mrp sodium dependent taurocholate transporting polypeptide ntcp organic anion transporting polypeptides oatp oatp analyzed northern blotting serum liver function tests also performed results postoperative survival rates hours respectively mrna expression bsep mrp increased decreased values significantly greater hours contrast mrp expression regulated half preoperative level increased mrna expression uptake transporters ntcp oatp oatp decreased similar extent total serum bilirubin bile acid levels significantly increased hepatectomy procedures greater extent conclusions alteration mrna expression bsep mrp mrp may characteristic behavior early stage acute liver failure
discovery poly adp ribose years ago opened new field leading way discovery poly adp ribose polymerase parp family enzymes adp ribosylation reactions catalyze although field initially focused primarily biochemistry molecular biology parp dna damage detection repair mechanistic functional understanding role parps different biological processes grown considerably late accompanied shift focus enzymology search substrates well first attempts determine functional consequences site specific adp ribosylation substrates supporting advances host methodological approaches chemical biology proteomics genomics cell biology genetics propelled new discoveries field new findings diverse roles parps chromatin regulation transcription rna biology dna repair complemented recent advances link adp ribosylation stress responses metabolism viral infections cancer studies begun reveal promising ways parps may targeted therapeutically treatment disease review discuss topics relate future directions field
human protein tyrosine phosphatase non receptor type ptpn prevents cells death targeting pdz domain abrogates protection triggers apoptosis demonstrate pdz domain inhibits phosphatase activity ptpn mere binding pdz ligand sufficient release catalytic inhibition combined analytical ultracentrifugation small angle ray scattering nmr understand pdz domain controls ptpn activity show physiologically active ptpn two domain encompassing pdz phosphatase domains adopts predominant compact conformation solution pdz ligand binding restores catalytic competence ptpn disrupting transient interdomain communication study strengthens emerging notion pdz domains act regulators enzyme activity therefore active players dynamic regulation signaling pathways
genetic resistance crops cornerstone disease management agriculture genetic resistance often rapidly broken due selection virulence pathogen population ask whether strategies prolong useful life plant resistance genes modeling study compared four deployment strategies gene pyramiding sequential use simultaneous use mixed strategy developed spatially explicit model france parameterized fungal pathogen puccinia striiformis tritici causing wheat yellow rust test management strategies realistic spatial setting found pyramiding two new resistance genes one variety durable solution virulent genotype emerge mutation deploying single gene resistant varieties concurrently pyramided variety eroded durability gene pyramid found continuation deployment varieties broken resistance prolonged useful life simultaneous deployment four single gene resistant varieties versus sequential use however virulence already present pathogen population durability low none deployment strategies effect results provide guidance effective strategies using resistance genes crop protection practice
regulation cellular proliferation differentiation brain development results processes requiring several regulatory networks function synchrony micrornas part regulatory system although many micrornas evolutionarily conserved recent evolution regulatory molecules enable acquisition new means attaining specialized functions identify report novel expression functions human higher primate specific microrna mir neurons using human fetal derived neural progenitors syy neuroblastoma cell line esc derived neural progenitors npc found mir upregulated neuronal differentiation using microarray northern blotting qrt pcr conducted knockdown overexpression experiments look functional consequences perturbed mir levels knockdown mir inhibited differentiation induced proliferation differentiated neurons correspondingly mir overexpression progenitors led slowing cell cycle differentiation neuronal phenotypes consequently identified crucial cell cycle proteins aberrantly changed expression level therefore conclude mir required maintaining neurons differentiated state
estuarine marine ecosystems subject different sources stress including changes environmental physicochemical variables nutrients oxygen availability temperature salinity exposure large cocktail environmental pollutants estuary bilbao despite improvement environmental quality due replacement polluting industries progressive implementation integrated sewage treatment plan chronic pollution metals hydrocarbons still remains together eutrophication pollution emerging contaminants unit formation research protection ecosystem health created strategic aggregation three consolidated research groups cell biology environmental toxicology cbet phytoplankton estuaries coastal areas fiteac research marine estuarine pelagic environment planktonic communities maresplank three groups long tradition studying health marine estuarine ecosystems different perspectives focusing bay biscay especially estuary bilbao work review data health status bilbao estuary using early warning tools cell tissue levels phytoplankton assemblages zooplankton ecology spite seasonal interannual variability recorded parameters general recovery trend observed health status estuary bilbao sporadic critical events prestige oil spill elsevier ltd rights reserved
human metabolism carotenoids interest provitamin function certain carotenoids also compounds associated reducing risks certain certain cancers chronic diseases full understanding carotenoid metabolism complicated number factors variations physiochemical properties among carotenoids altered carotenoid utilization result normal vicissitudes lipid absorption transport divergence metabolic fate within intestinal enterocyte especially carotenoid cleavage retinoids differences packaging transport lipoproteins dissimilarity tissue uptake specific carotenoids possible isomerization carotenoids within tissues hampering research progress lack animal models perfectly mimic human carotenoid metabolism limited number carotenoids approved human consumption pure form clear however diet affects carotenoid absorption efficient digestion absorption dietary fat well presence bile salt micelles essential carotenoid absorption competition among carotenoids dietary components absorption transport uptake tissues documented bur needs research limited data seems polar carotenoids xanthophylls may absorbed efficiently carotenes hydrocarbon carotenoids mechanism humans phenomenon nonresponders oral doses beta carotene requires study determine whether effect inefficient absorption intestinal cleavage carotene delayed maxima plasma carotenoid concentrations ingestion relative plasma triacylglycerol explainable secondary secretion carotenoids transferred lipoproteins chylomicron clearance site degree isomerization carotenoids consumption yet defined article absorption transport tissue uptake carotenoids reviewed possible differences among carotenoids factors influencing utilization discussed elsevier science inc
human cell leukemia virus type htlv causes adult cell leukemia atl long latency period years mature cell neoplasms emerge patients infected htlv often atl cell neoplasms developing patients tend diagnosed simply atl without investigation however cell neoplasms develop htlv infected cases atl mature cell malignancies atl carefully excluded patients infected htlv sometimes closely resemble atl clinical morphological histological features present case peripheral cell lymphoma otherwise specified ptcl nos htlv carrier confirmation monoclonal integration virus southern blotting leads definite diagnosis atl although detect monoclonal integration band htlv case high htlv proviral load complicated diagnosis multicolor flow cytometric analysis clearly showed htlv integrated tumor cells facilitated discrimination ptcl nos atl
diagnosis hemophagocytic lymphohistiocytosis hlh difficult one distinction primary versus secondary hlh particularly challenging early stages diagnosis distinction important make primary hlh requires allogeneic hematopoietic cell transplantation definitive cure flow cytometric screening tests many genetic forms hlh available however patients primary hlh captured screening tests due fact screening test sensitive additionally patients primary forms hlh may mutations genes yet discovered issue european journal immunology ammann eur immunol compare cell phenotype patterns among patients primary secondary hlh find assessment cell activation differentiation may assist diagnosis hlh furthermore phenotypic analysis potential help make important distinction primary secondary hlh
introduction emergence mass utilization high throughput technologies including sequencing technologies genomics mass spectrometry proteomics metabolomics lipids allowed geneticists biologists biostatisticians bridge gap genotype phenotype massive scale new technologies brought rapid advances understanding cell biology evolutionary history microbial environments increasingly providing new insights applications towards clinical care personalized medicine areas covered success industry also translates daunting big data challenges researchers institutions extend beyond traditional academic focus algorithms tools main obstacles revolve around analysis provenance data management massive datasets ease use software interpretability reproducibility results expert commentary authors review challenges associated implementing bioinformatics best practices large scale setting highlight opportunity establishing bioinformatics pipelines incorporate data tracking auditing enabling greater consistency reproducibility basic research translational clinical settings
major part phytoplankton microalgae pivotal global food chain exceptional capacity fixation illustrates indispensable significance sustain earth ecosystems play still underestimated role eliminating contaminants various environments addition ecological benefit many microalgal species exhibit high nutritional value time generate valued bio products pigments lipids bioactive compounds certain polysaccharides bio hydrogen even biopolyesters plastic like properties potential successful market penetration three substantial pigment groups namely chlorophylls carotenoids phycobilins essential light harvesting fixation pigments likely undergo quick commercial success functional food cosmetics aquaculture pharmaceuticals food technology due often high contents polyunsaturated fatty acids essential human metabolism microalgal oils commercialized health food pharmaceutical therapeutic field creating much higher value converting biofuel finally algal biomass remaining residue product recovery used forage biogas feedstock biofertilizer utilization needed balancing material energy cycles entire process thus technology platforms following principles bio refineries shall established enable design sustainable economically feasible production marketable microalgal products elsevier rights reserved
micrornas mirnas small endogenous rnas regulate gene expression plants animals large number mirnas identified various animals model plant species arabidopsis thaliana rice oryza sativa however characteristics wheat triticum aestivum mirnas poorly understood computational identification mirnas wheat est sequences preformed using house program genomicsvm prediction model mirnas study resulted discovery mirna candidates nine mirna representatives randomly selected candidates experimentally validated northern blotting indicating prediction accuracy validated mirnas wheat ests predicted putative targets
background infertility one major social issues due asymptomatic cervical infection associated staphylococcus aureus aureus majority patients remain undiagnosed present study intended assess frequency aureus isolated infertile women endocervix northwest iran materials methods descriptive cross sectional study specimens randomly collected vagina examination using sterile speculum swabbing performance antibiotic susceptibility testing polymerase chain reaction pcr used identify methicillin resistance aureus mrsa toxic shock syndrome toxin tsst results women urogenital tracts colonized aureus candida spp respectively three patients infected fungi aureus simultaneously antibiotic susceptibility results showed high activity vancomycin trimoxazole isolates regarding pcr results meca sequences detected strains whilst tst gene encoding tsst detected clinical strains conclusion prevalence aureus high infertile women therefore demands patients undergoing infertility treatment investigated thoroughly type infection
methyladenosine modifications rna diverse ubiquitous amongst eukaryotes occur mrna rrna trna microrna recent studies revealed reversible rna modifications affect rna splicing translation degradation localization multiple physiological processes like circadian rhythms stem cell pluripotency fibrosis triglyceride metabolism obesity also controlled modifications immunoprecipitation sequencing mass spectrometry modified northern blotting methods commonly employed measure modifications herein present northeastern blotting technique measuring modifications current protocol provides good size separation rna better accommodation standardization various experimental designs clear delineation modifications various sources rna modifications known crucial impact human physiology relating circadian rhythms obesity roles patho physiological states unclear therefore investigations modifications immense possibility provide key insights molecular physiology
requiring simple heating devices isothermal nucleic acid based amplification nasba potential detection platform developed site diagnosis aquaculture pathogens report nasba assay developed taura syndrome virus tsv one devastating rna virus pathogens several penaeid shrimp species nasba amplicons detected agarose gel electrophoresis confirmed northern blotting dot blotting analysis using biotinylated tsv specific primer sensitivity tsv nasba coupled dot blotting detection approximately fold less sensitive commercially available nested pcr based tsv detection prevention system also confirmed sensitive pcr based tsv detection protocol recommended oie office international des epizooties specificity tsv nasba reaction substantiated results rna non target viruses generate signals furthermore simple colorimetric microtiter plate assay employing tsv specific capture detection primers developed simple alternative approach detection nasba amplicons taken together combination isothermal nasba colorimetric solid phase based assays allow sensitive straightforward speedy site detection tsv
determine whether green teen polyphenol gtp ameliorated premature senescent osteoporosis phenotype bmi mice paired littermates bmi male female mice taken littermate mice vivo mice divided groups treated following wild type mice normal diet bmi bko mice normal diet bmi mice gtp supplemented diet bko gtp body weight day drinking water analysis phenotypic differences whole ray morphology protein histochemistry cell biology respectively elucidate roles mechanisms gtp premature aging osteoporosis phenotype bmi mice results demonstrated bmi deficiency resulted growth retardation premature aging osteoporosis also demonstrated typical aging osteoporosis phenotypes bmi deficient mice largely rescued gtp increased proliferation decreased apoptosis promoted skeletal growth development increased osteoblastic bone formation decreased osteoclastic bone resorption senescence associated molecules regulating oxidative stress multiple organs expressing antioxidase bmi mice findings implied green tea novel therapeutic way delay aging prevent aging associated osteoporosis
study designed control plant fertility cell lethal gene barnase expressing specific developmental stage specific tissue male organ control crellox system heterosis breeding chili pepper capsicum annuum chili pepper inbred lines transformed cre gene barnase gene situated loxp separately means agrobacterium culture study established high transformation system extensive study affecting factors including genotype selection marker lethal dose cotyledon petiole day old seeding pre cultured media mineral vitamine benzyladenine iaa indoleacetic acid gibberellic acid sucrose agar explants infected agrobacterium tumefaciens optical density reached cultured media iaa sucrose agar acetosyringone mol cotyledons petiole cultured selective differentiation medium media medium supplemented iaa agno coconut water kanamycin carbenicillin sucrose agar kmr kanamycin resistant bud rosettes elongated selective elongation medium rooted rooting medium pcr southern blotting analysis kmr plantlet indicated foreign genes integrated genome pepper transgenic plants cre gene developed well blossomed set fruit normally transgenic plants barnase gene grew well normal appearance flower showed different fertility complete sterility partial sterility complete fertility similar results obtained vitro pollen germination experiments
shikonin major effective component chinese herbal medicine lithospermum erythrorhizon sieb exhibits anti inflammatory property towards rheumatoid arthritis potential mechanism unclear aim investigate mechanism shikonin lipopolysaccharide lps induced fibroblast like synoviocyte lifls inflammation model fibroblast like synoviocytes flss treated lps establish like model lifls flss pretreated shikonin min treatment groups quantitative real time polymerase chain reaction enzyme linked immunosorbent assays used detect mrna protein levels interleukin tumor necrosis factor tnf alpha signal proteins involved production analyzed western blotting shikonin significantly reversed inhibitory effects lps expression flss inactivating pkc kappa pathway addition shikonin inhibited lps induced tnf alpha expression flss effect markedly diminished neutralizing antibody mediated suppression tnf alpha transcription demonstrated response protein synthesis inhibitor cyclohexamide mrna decay shikonin inhibits lps induced tnf alpha production flss suppressing pkc kappa dependent decrease study also highlights potential application shikonin treatment
traditionally choice candidate compounds take forward development based pre clinical data however lack predictivity human clinical situation models used led poor decision making later development process mistakes realised costly time consuming correct furthermore compounds may made perfectly good drugs dropped due poor pharmacokinetics animal models accelerator mass spectrometry ams ultra sensitive detection technique used quantify carbon administering small amounts labelled compounds ams used obtain human clinical data early drug development process studies helpful understanding human pharmacokinetics using microdosing provide early human metabolism information validate choice animal species used pre clinical safety testing identify unique disproportionate human metabolites phase provide fundamental human pharmacokinetic data including absolute bioavailability facilitating scientifically optimal cost effective study design provision clinical insights earliest possible opportunity lead improved decision making therefore reduce time cost involved drug development process
diagnostic work patients suspected mitochondrial disease evaluating activity individual oxidative phosphorylation oxphos complexes crucial describe spectrophotometric assays oxphos enzymology applied tissue samples cultured cells assays designed assess enzymatic activity individual oxphos complexes along krebs cycle enzyme citrate synthase mitochondria control well include assay coupled energy transfer complexes iii determining enzymatic activities valuable defining isolated multicomplex disorders may relevant design future molecular investigations
objective flammation may contribute increased risk cardiovascular disease cvd hiv infection micrornas mirnas involved regulation inflammation treated hiv infected individuals aimed identify differentially expressed mirnas known roles inflammation cvd risk investigate associations systemic inflammation methods screening cohort including hiv infected individuals uninfected controls microarray profiling performed using peripheral blood mononuclear cells pbmcs differentially regulated mirnas previously related inflammation cvd validated using real time quantitative reverse transcription polymerase chain reaction hiv infected individuals uninfected controls validated mirnas measured pbmcs cells interleukin tumor necrosis factor alpha high sensitivity reactive protein lipopolysaccharide lps cytomegalovirus immunoglobulin lipids fasting glucose measured associations validated mirnas assessed multiple linear regression analysis results upregulation mir mir mir found pbmcs hiv infected individuals compared uninfected controls contrast mir mir downregulated cells multivariate analysis mir cells negatively associated lps triglycerides positively associated tumor necrosis factor alpha mir pbmc positively associated interleukin fasting glucose whereas mir negatively associated lps pbmcs hiv infected individuals low cytomegalovirus immunoglobulin mir mir mir mir downregulated conclusion independent cohorts mir mir mir differentially regulated treated hiv infected individuals associated markers systemic inflammation
genuine understanding human exocrine pancreas biology pathobiology hampered lack suitable preparations reliance rodent models employing dispersed acini preparations developed organotypic slice preparation normal portions human pancreas obtained cancer resections preparation assessed physiologic pathologic responses cholinergic agonist carbachol cch cholecystokinin cck including amylase secretion exocytosis intracellular responses cytoplasmic autophagic vacuole formation protease activation cch cck dose dependently stimulated secretory responses human pancreas slices similar previously observed dispersed rodent acini confocal microscopy imaging showed responses accounted efficient apical exocytosis physiologic doses agonists apical blockade redirection exocytosis basolateral plasma membrane supramaximal doses secretory responses exocytotic events evoked cck mediated cck cck receptors physiologic agonist doses evoked oscillatory increases across acini supraphysiologic doses induced formation cytoplasmic autophagic vacuoles activation proteases trypsin chymotrypsin maximal atropine pretreatment completely blocked cch evoked responses affect cck evoked responses indicating rather acting nerves within pancreas slice cck cellular actions directly affected human acinar cells human pancreas slices represent excellent preparations examine pancreatic cell biology pathobiology could help screen potential treatments human pancreatitis
pharmacokinetic pharmacodynamic parameters ono humans estimated using preclinical data order provide essential information better design future clinical studies characterization measured terms decreased lymphocyte counts blood administration ono sphingosine phosphate receptor modulator using two compartment model human parameters estimated preclinical data cynomolgus monkey vitro human metabolism data estimate human parameters relationship lymphocyte counts plasma concentrations ono cynomolgus monkeys determined relationship lymphocyte counts plasma concentrations ono described indirect response model indirect response model max value value based cynomolgus monkey data parameters used represent human parameters simulation lymphocyte counts human parameters input output rate constants lymphocytes obtained literature based estimated human parameters human lymphocyte counts administration ono simulated conclusion simulation human lymphocyte counts based preclinical data led acquisition useful information designing future clinical studies copyright john wiley sons ltd
lipoxygenases lox form family lipid peroxidizing enzymes implicated number physiological processes pathogenesis inflammatory hyperproliferative neurodegenerative diseases occur two three domains terrestrial life bacteria eucaiya human genome involves six functional lox genes encode six different lox isoforms one isoforms alox first described rabbits enzyme capable oxidizing membrane phospholipids maturational breakdown mitochondria immature red blood cells following decades alox extensively characterized biological functions studied number cellular vitro systems well various whole animal disease models review aimed summarizing current knowledge protein chemical molecular biological enzymatic properties alox various species human mouse rabbit rat well implication cellular physiology pathogenesis various diseases elsevier rights reserved
background determination telomere length useful characterization dyskeratosis congenita aplastic anemias well hematological malignancies short telomeres result specific defect telomere maintenance likely higher cellular turnover hematological malignancies data lot conclusive diamond blackfan anemia dba pure erythroid aplasia due defects ribosomal proteins aim evaluate utility qpcr method telomere length assessment evaluate diagnostic contribution telomere measurement bone marrow failure syndromes bmfs procedure telomere length evaluated qpcr peripheral blood cells frorn normal individuals patients bmfs including patients dba results results obtained qpcr comparable quantitative methods flow fish southern blotting data show one dba patient minority bmfs patients short telomeres defined less percentile controls conclusions qpcr method telomere length evaluation easy alternative methods may thus valuable clinical hematological laboratory setting telomere maintenance seem involved pathogenesis dba unlike bmfss pediatr blood cancer wiley liss inc
saccharomyces cerevisiae well established model organism used study multiple facets eukaryotic organisms manipulation isolation dna key element basic genetic research meanwhile isolation rna required study transcriptional regulation presented chapter fast efficient methods isolating genomic plasmid dna total rna capable utilized variety genetic studies restriction analysis northern southern blotting real time reverse transcriptase pcr plasmids isolated via method also sufficient quality transformed coli genetic manipulation study
dietary preferences influence basal human metabolism gut microbiome activity turn may long term health consequences present study reports metabolic responses free living subjects daily consumption dark chocolate days clinical trial performed population human subjects classified low high anxiety traits using validated psychological questionnaires biological fluids urine blood plasma collected test days beginning midtime end week study nmr based metabonomics employed study global changes metabolism due chocolate consumption human subjects higher anxiety trait showed distinct metabolic profile indicative different energy homeostasis lactate citrate succinate trans aconitate urea proline hormonal metabolism adrenaline dopa methoxy tyrosine gut microbial activity methylamines cresol sulfate hippurate dark chocolate reduced urinary excretion stress hormone cortisol catecholamines partially normalized stress related differences energy metabolism glycine citrate trans aconitate proline alanine gut microbial activities hippurate cresol sulfate study provides strong evidence daily consumption dark chocolate period weeks sufficient modify metabolism free living healthy human subjects per variation host gut microbial metabolism
preparation niclosamide named wettable powder niclosamide ethanolamine salt wpn chemical molluscicide available china widely used oncomelania hupensis control past years molluscicidal mechanism elucidated yet recently derivative niclosamide salt quinoid dichloro nitro salicylanilide liu dai shui yang lds proven equivalent molluscicidal effects wpn lower cost significantly lower toxicity fish wpn previous study gene expression profiling hupensis showed significantly effects two molluscicides applied study designed use morphological enzymological analyses elucidate mechanism molluscicides cause snail death wpn lds treatment number mitochondria hupensis reduced cristae appeared unclear heterochromatin gathered polarized ribosome numbers rough endoplasmic reticulums rers decreased myofilaments muscle cells became disordered loose cytoplasm liver cells concentrated damage cell structures organelles suggested inhibited movement ability effects liver energy metabolism following treatment parallel activities enzymes related carbohydrate metabolism inhibited except lactate dehydrogenase ldh increased muscle tissue activities enzymes related stress response increased followed decreasing lower levels treated group shift carbohydrate metabolism patterns led insufficient energy supply lactic acid accumulation variations nitric oxide synthase nos alanine aminotransferase alt superoxide dismutase sod process molluscicide treatment suggested stress response snail molluscicides early stages later fatal damage liver nervous system general effects wpn lds similar although lds treated snails showed serious damage liver stronger inhibition enzymes related aerobic respiration stress response consistent transcriptome profile obtained previously however considering enzyme activities post transcriptional protein levels comprehensive identification annotation potential enzyme related genes regulation pattern would necessary provide great benefit understanding potential mechanism molluscicides even future molluscicide development
novel taxanes fold cytotoxic resistant tumour cells clinically used paclitaxel docetaxel current study examined metabolism new taxanes human rat pig minipig liver microsomes metabolites characterized high performance liquid chromatography hplc tandem mass spectrometry analysis metabolic pathways derived structures confirmed investigating subsequent metabolism purified metabolites metabolized products respectively contrast docetaxel side chain hydroxylation occur tert butyl group isobutyl isobutenyl chains species differences metabolism observed example human untreated rat microsomes hydroxylated preferentially side chain whereas pig minipig microsomes preferentially metabolized taxane core increased formation secondary tertiary metabolites rat microsomes high expression cypa compared uninduced rats confirmed role cypa taxane metabolism major products formed human cdna expressed cypa none cypa indicating principal role cypa orthologues metabolism knowledge metabolic pathways examined agents rates formation important due possible metabolic inactivation three novel drugs great potential therapy taxane resistant tumours relatively slow metabolism could favourable antitumour efficiency vivo
reverse micelles system suggested direct tool study influence membrane matrix composition activity structure membrane associated enzymes use acid phosphatase example reverse micelles functioning monomeric dimeric forms could separately observed variation size micelles found including lipids micellar system dramatically affect enzyme functioning even low lipid content effect depends lipid nature structural studies using spectroscopy dls methods shown influence lipid composition enzyme properties might caused interaction lipids enzyme well influence lipids structure properties micellar matrix elsevier inc rights reserved
purpose review demonstrate dysbiosis human microbiome drive autoimmune disease recent findings humans superorganisms human body harbors extensive microbiome shown differ patients autoimmune diagnoses intracellular microbes slow innate immune defenses dysregulating vitamin nuclear receptor allowing pathogens accumulate tissue blood molecular mimicry pathogen host causes dysfunction interfering human protein interactions autoantibodies may well created response pathogens summary catastrophic failure human metabolism observed autoimmune disease results common underlying pathogenesis successive accumulation pathogens microbiome time ability pathogens dysregulate gene transcription translation human metabolic processes autoimmune diseases likely passed families inheritance familial microbiome rather mendelian inheritance genetic abnormalities stimulate innate immune defenses allow patients target pathogens cell death results immunopathology
novel cytochrome cypx identified est databases basis similarity conserved region helix cypa family human mouse cypx cdnas cloned found encode putative cytochrome proteins molecular modelling cypx predicted unusual substrate binding channel cyp family expression human cypx detected brain est analysis aorta northern blotting mouse cdna used demonstrate cypx rna expressed principally brain much lower levels liver hepatic levels cypx rna affected treatment inducing agents phenobarbital dioxin dexamethasone ciprofibrate levels affected ppar alpha mice specific antibody cypx developed shown detect cypx brain quantitation cypx protein brain demonstrated approximate cypx protein microsomal protein showing cypx major brain immunohistochemical localization cypx protein brain showed specific staining neurons choroids epithelial cells vascular endothelial cells data suggest important role cypx brain
microrna mir particular mir negative regulatory effect osteosarcoma cell proliferation migration invasion notably also post transcriptional regulatory factor sex determining region box sox required osteosarcoma cell self renewal tumorigenesis direct regulator sox mir hypothesized greatly associated regulation malignancies osteosarcoma investigate role mir malignancies osteosarcoma reverse transcription quantitative polymerase chain reaction performed detect expression level mir osteospheres results revealed mir suppressed osteosarcoma stem like cells oscs osteospheres introduction mir mimics short hairpin rna targeting sox mrna shsox human oscs markedly reduced transformation properties vitro capacity form tumors soft agar furthermore epigenetic expression mir shsox inhibited expression stem cell marker stem cell antigen led failure osteosphere formation respectively data present study indicated inhibitory role mir tumor growth metastasis osteosarcoma may function reducing maintenance osteosphere self renewal capacity elimination tumorigenic ability invasion osteosarcoma vitro findings may provide basis novel therapeutic target osteosarcomas based inducing expression mir
backgroundhuman papillomavirus hpv positive oropharyngeal cancer generally associated excellent response therapy hpv positive tumors progress despite aggressive therapy purpose study evaluate viral oncogene expression viral integration sites hpv hpv positive squamous cell carcinoma lines methodse alternate transcripts assessed reverse transcriptase polymerase chain reaction pcr detection integrated papillomavirus sequences dips pcr sequencing identified viral insertion sites affected host genes cellular gene expression assessed across viral integration sites resultsall hpv positive cell lines expressed alternate hpve splicing indicative active viral oncogenesis hpv integration occurred within cancer related genes dcc jak tert atr etv pgr ptprn tmem head neck squamous cell carcinoma hnscc lines scc gcc intergenic integration conclusionhpv integration cancer related genes occurred hpv positive cell lines tumors progressed hpv integration cancer related genes may secondary carcinogenic driver hpv driven tumors wiley periodicals inc head neck
fluorescence activated cell sorting facs technique purify specific cell populations based phenotypes detected flow cytometry method enables researchers better understand characteristics single cell population without influence cells compared methods cell enrichment magnetic activated cell sorting mcs facs flexible accurate cell separation due ability phenotype detection flow cytometry addition facs usually capable separating multiple cell populations simultaneously improves efficiency diversity experiments although facs limitations broadly used purify cells functional studies vitro vivo settings report protocol using fluorescence activated cell sorting isolate rare population immune cells plasmacytoid dendritic cells pdc high purity bone marrow lupus prone mice vitro functional studies pdc
introduction peer teaching well established teaching method medical education winter term institute anatomy cell biology ulm germany introduced longitudinal didactics program train tutor ttt train student tutors near peer teachers npt dissection course twenty three tutors participated programme study describes educational concept npts activities dissection course methods npts documented activities daily basis form semi structured reports total reports quantitatively qualitatively analysed free text analysis performed using grounded theory followed code quantification indications results npts spend time dissecting supervising tutee dissection process organisational tasks larger share beginning course examinations proportion time spent giving feedback rose positive indications described experiences working tutees contrast negative indications characterized self critical reflection activities npts included learning domains teaching substantially functioning teachers role models convey particular attitudes conclusion ttt trained tutors npt clearly met requirements practical course adjusted activities response course progress npts concerned tutees attitudes may need professional support within ttt program regarding elsevier gmbh rights reserved
rna silencing innate antiviral immunity response plants animals counteract host immune response viruses evolved effective strategy protect expression viral suppressors rna silencing vsrs potyviruses encode two vsrs helper component proteinase hcpro viral genome linked protein vpg molecular biology former well characterized whereas vpg exerts function suppression rna silencing yet understood study show infection turnip mosaic virus tumv causes reduced levels suppressor gene silencing sgs key component rna silencing pathway functions double stranded rna synthesis virus derived small interfering rna vsirna production also demonstrate among tumv encoded viral proteins vpg one interacts sgs furthermore present evidence expression vpg alone independent viral infection sufficient induce degradation sgs intimate partner rna dependent rna polymerase rdr moreover discover vpg mediated degradation sgs occurs via ubiquitin proteasome autophagy pathways taken together data suggest role vpg mediated degradation sgs suppression silencing vpg importance potyviruses represent largest group known plant viruses cause significant losses many agriculturally important crops world order establish infection potyviruses must overcome host antiviral silencing response viral protein called vpg shown play role process works unclear paper found vpg protein turnip mosaic virus tumv potyvirus interacts host protein named sgs key protein rna silencing pathway moreover interaction leads degradation sgs interacting functional partner rdr another essential component rna silencing pathway also identified cellular pathways recruited vpg mediated degradation sgs therefore work reveals possible mechanism vpg sabotages host antiviral rna silencing promote virus infection
generally red vitis vinifera grapes contain monoglucosidic anthocyanins whereas non vinifera red grapes vitis genus monoglucosidic bis glucosidic anthocyanins latter believed hydrophilic stable although previous studies established biosynthetic mechanism formation monoglucosidic anthocyanins less attention paid bis glucosidic anthocyanins present research full length cdna udp glucose anthocyanin glucosyltransferase vitis amurensis rupr zuoshanyi grape vagt cloned acquisition purification recombinant vagt enzymatic parameters systematically analyzed vitro recombinant vagt used malvidin glucoside optimum glycosidic acceptor udp glucose used glycosidic donor vagt gfp found located cytoplasm analyzing subcellular localization laser scanning confocal fluorescence microscope result coincident metabolic function modifying anthocyanins grape cells furthermore relationship transcriptional expression vagt accumulation anthocyanidin bis glucosides berry development suggested vagt key enzyme biosynthesis bis glucosidic anthocyanins amurensis grape berries elsevier ltd rights reserved
background although human stromal vascular fraction svf regarded attractive stem cell source therapeutic mechanism wound healing fully elucidated aims study investigated molecular characteristics therapeutic property svf wound healing methods microarray data showed svf cells enriched higher level wound healing epithelium development related genes micro rna results quantitative polymerase chain reaction pcr reverse transcriptase pcr results revealed epithelialization growth factor epidermal growth factor egf chemokines stromal cell derived factor sdf cxcl neutrophil activating protein nap cxcl chemokine receptors cxcr ccr ccr wound healing genes regulated svf compared adipose derived mesenchymal stem cells ascs vitro scratch wound closure experiment demonstrated culture svf substantially accelerated wound closure fibroblasts wounds nude mice created skin excisions followed injections svf pluronic hydrogel svf implantation highly accelerated wound closure increased cellularity epithelialization addition transplanted svf exhibited high engraftment rates wound area suggesting direct benefits cutaneous closure conclusions taken together data suggest svf possesses high therapeutic capability wound healing via secretion epithelialization chemotactic growth factors enhanced engraftment properties
mutant strain clostridium beijerinckii high tolerance ferulic acid generated using atmospheric pressure glow discharge high throughput screening beijerinckii ncimb mutant strain produced butanol grown medium containing glucose ferulic acid comparable production non ferulic acid cultures butanol ferulic acid introduced medium beijerinckii grew well produced butanol cell growth butanol production beijerinckii seriously inhibited ferulic acid added medium furthermore beijerinckii could produce butanol using non detoxified hemicellulosic hydrolysate diluted sulfuric acid treated corn fiber sahhc carbon source results demonstrate beijerinckii high ferulic acid tolerance able use non detoxified sahhc butanol production international union biochemistry molecular biology inc
background leishmania viannia braziliensis main etiological agent tegumentary leishmaniasis americas parasite molecular diversity host immune status contribute extensive variations clinical presentation within endemic areas brazil pentavalent antimonials used years first line drug cases despite potential severe side effects refractoriness rio janeiro brazil braziliensis infections benign scarcity parasites although metastasis refractory infections arise scenario use novel molecular tools useful diagnosis assess tissue parasitism benefit clinical therapeutic management methods study parasite load assessed real time pcr based leishmanial small subunit ribosomal rna gene results conclusion data revealed tendency higher tissue parasitism skin compared mucous lesion sites reduction disease progression parasite load lower poor compared good responders antimonials also reduced recurrent lesions compared primary ones however parasite load became higher sequential relapses pointing immune system inability control infection therefore parasite burden seem good predictor disease progression authors published elsevier ltd behalf international society infectious diseases
rice stripe tenuivirus rsv filamentous negative strand rna virus causing severe diseases rice asian countries viral particle composed predominantly nucleocapsid protein genomic rna however molecular details rsv interacts genomic rna particle assembly remain largely unknown modeled rna complex show polar amino acids within predicted groove critical rna binding protecting rna rnase digestion rsv formed pentamers hexamers heptamers octamers modeling higher order structures found oligomer formation driven terminal amino arm deletion arm abolished oligomerization terminally truncated less able interact rna protect rna wild type findings afford valuable new insights molecular mechanism rsv nps interacting genomic rna
contribution gordonibacter different abilities qualitative quantitative individuals transform dietary ellagic acid anti inflammatory urolithins investigated specific suitable pcr system developed detection quantification gordonibacter ellagic acid metabolism gut faecal microbiota healthy individuals consumed walnuts pomegranate extract studied urolithin positively correlated gordonibacter faeces whereas excretion isourolithin urolithin inversely correlated relationship gordonibacter urolithin found vivo also confirmed vitro suggests beneficial effects attributed consumption foods containing ellagic acid could mediated individuals gordonibacter levels development prebiotics probiotics synbiotic aimed increasing gordonibacter related species could improve individual ability produce anti inflammatory cardioprotective anticancer metabolite urolithin elsevier ltd rights reserved
leptin adipocytokine regulates body weight maintains energy homeostasis promoting reduced food intake increasing energy expenditure leptin expression secretion regulated various factors including hormones fatty acids butyrate short chain fatty acid acts source energy humans determined whether fatty acid play role leptin expression fully differentiated human adipocytes mature differentiated adipocytes incubated without increasing concentrations butyrate rna extracted leptin mrna expression examined northern blot analysis moreover cells incubated regulators may affect signals may alter leptin expression analyzed northern blotting butyrate stimulated leptin expression stimulated mitogen activated protein kinase mapk phospho creb signaling time dependent manner prior treatment cells signal transduction inhibitors pertusis toxin protein antagonist mapk inhibitor wortmannin pik inhibitor abolished leptin mrna expression results suggest butyrate regulate leptin expression humans transcriptional level accomplished protein coupled receptors specific short chain fatty acids mapk phosphatidylinositol kinase signaling pathways
fresh cut papaya fruit undergo rapid tissue deterioration storage comparative gene expression study conducted isolate genes differentially expressed upon fresh cut processing means mrna differential display pcr differential display analysis performed intact fresh cut papaya fruit stored parallel degrees three different one base anchored oligo eight arbitrary primers confirmation true positive bands performed northern blotting fourteen differentially expressed cdnas ranging cloned sequenced compared genbank sequences partial cdnas showed significant homologies signaling pathway genes membrane proteins cell wall enzymes proteases ethylene biosynthetic enzymes enzymes involved plant defense responses northern blot analysis probes partial clones revealed genes corresponding partial cdnas expressed fresh cut dependent manner days storage transcripts detectable northern blots results suggest fresh cut processing induces expression proteins involved membrane degradation free radical generation enzymes involved global stress responses elsevier rights reserved
fusarium verticillioides globally important pathogen maize capable causing severe yield reductions economic losses addition verticillioides produces toxic secondary metabolites kernel colonization pose significant threats human animal health fusarium verticillioides plant pathogenic fungi possess large number genes known predicted function could encode novel virulence factors antifungal targets study identified characterized novel gene fug fungal unknown gene verticillioides functional genetics deletion fug impaired maize kernel colonization fumonisin biosynthesis addition deletion fug increased sensitivity antimicrobial compound benzoxazolinone hydrogen peroxide indicates fug may play role mitigating stresses associated host defence transcriptional profiling via rna sequencing rna seq identified numerous fungal genes differentially expressed kernel environment following deletion fug including genes involved secondary metabolism mycelial development sequence analysis fug protein provided evidence nuclear localization dna binding domain unknown function associated previously characterized transcriptional regulators information combined observed transcriptional reprogramming deletion mutant suggests fug represents novel class fungal transcription factors genes otherwise involved signal transduction
availability sorts biological samples require noninvasive collection methods led even greater interest applying molecular biology visceral leishmaniasis diagnosis since samples increase safety comfort patients health professionals context work aimed evaluate suitability urine specimen leishmania infantum kinetoplast dna detection real time quantitative pcr qpcr subsequent reproducibility analysis detection limit qpcr assay set similar parasites per urine comparative analysis performed set diagnostic criteria serological molecular reference tests concordance value obtained suspected hiv aids patients kappa coefficient indicated good agreement test set diagnostic criteria detection leishmania dna urine qpcr possible untreated individuals without suggestive renal impairment fast depletion parasite dna urine treatment one dose meglumine antimoniate suggested negative qpcr results thus indicating potential alternative specimen follow efficacy therapeutic approaches even evaluated clinically heterogeneous set patients urine showed good prospect sample diagnosis qpcr also indicating good negative predictive value untreated suspected patients elsevier rights reserved
background characterizing associations upper lower airways important asthma management objectives study aimed assess determinants incomplete asthma control patients allergic rhinitis asthma methods multiple factors including age sex atopy smoking history medication use asthma control questionnaire acq score fev fraction exhaled nitric oxide eno rhinitis questionnaire score examined defined rhinitis symptoms sensitization inhaled allergens acq used dichotomize subjects incompletely controlled group acq score well controlled group factors contribute incomplete asthma control assessed multivariate analysis results total patients asthma enrolled patients classified incomplete asthma control incompletely controlled group older airflow limitation airway inflammation severe rhinitis symptoms contrast well controlled group likely taking nasal corticosteroids ncss multivariate model adjusted age asthma treatment airflow limitation feno persistence severity rhinitis odds ratio nonuse ncss independently associated incomplete asthma control conclusions persistence severity use ncss associated level asthma control patients asthma studies required determine whether appropriate treatment rhinitis would improve asthma control american academy allergy asthma immunology
efficient transformation lilies required genetic improvement ornamental marketable qualities although lilium longiflorum transformed particle bombardment agrobacterium transformation frequency low study tested new agrobacterium mediated transformation methods using shoot segments combined two different regeneration systems shoot segments cultivated agrobacterium tumefaciens strain agl pcas harboring binary vector carrying neomycin phosphotransferase driven promoter maize ubiquitin gene effect different concentrations benzyladenine dichlorophenoxyacetic acid regeneration investigated results indicated murashige skoog medium alpha naphthalene acetic acid optimal shoot formation nodal stem best explant shoot induction medium optimal callus induction direct shoot formation method regenerated plantlets per explants regenerants positive transgene pcr callus regeneration method regenerated plantlets per explants pcr positive southern blotting confirmed insertion transgene plant host genome direct shoot formation method fold efficient previously reported transformation method species
chenopodiaceae suaeda salsa leaf succulent euhalophyte shoots salsa larger succulent grown highly saline environments increased growth water uptake correlated large specific cellular accumulation sodium salsa salt glands salt bladders leaves thus plant must compartmentalize toxic vacuoles ability compartmentalize sodium may result stimulation proton pumps provide driving force increased sodium transport vacuole work isolated cdna vacuolar membrane proton translocating inorganic pyrophosphatase ppase salsa ssvp cdna contains uninterrupted open reading frame coding polypeptide amino acids northern blotting analysis showed ssvp induced salinity treated leaves activities atpase ppase arabidopsis overexpressing ssvp higher markedly wild type plant nacl drought stresses overexpression ssvp increase salt drought tolerance transgenic arabidopsis
seven octadecenoic acids double bond located positions photooxidized resulting hydroperoxy octadecenoic acids hpome resolved chiral phase hplc absolute configurations enantiomers determined gas chromatographic analysis diastereoisomeric derivatives spectra showed characteristic fragments influenced distance hydroperoxide carboxyl groups fatty acids investigated substrates cyclooxygenase cox manganese lipoxygenase mnlox dioxygenase dox activities two linoleate diol synthases lds dox cox mnlox abstracted hydrogen subject hydrogen abstraction mnlox allylic positions cox allylic hydrogens also abstracted dox activities lds dox allylic hydrogens close carboxyl groups dox also oxidized monoenoic fatty acids double bonds position suggesting length omega end little influence positioning oxygenation conclude cox mnlox readily abstract allylic hydrogens octadecenoic fatty acids dox oliw wennman hoffmann garscha hamberg jerneren stereoselective oxidation regioisomeric octadecenoic acids fatty acid dioxygenases lipid res
purpose reviewnorovirus infection emerging chronic infection immunocompromised hosts aim review discuss pathophysiology norovirus infection explore mechanistic models chronic infection shedder state especially patients immune deficiency diseases recent findingschronic norovirus infection increasingly associated enteropathy associated primary secondary immune deficiency diseases ongoing debate immune deficiency community whether truly causative agent enteropathy innocent bystander describe historic aspects norovirus infection immunology viral structure basis preventive vaccination strategies also postulate review disease model immune deficiency subjects creates milieu become chronic explore newer frontiers disease modification prevention summarynorovirus common cause acute gastroenteritis general population factors lead persistence patients immune deficiency need holistic studies include host assessment microbiome signatures viral pathogenic factors assessment
adenine phosphoribosyltransferase aprt deficiency rare inherited metabolic disorder leads formation hyperexcretion dihydroxyadenine dha urine low solubility dha results precipitation formation urinary crystals kidney stones disease present recurrent urolithiasis nephropathy secondary crystal precipitation renal parenchyma dha nephropathy diagnostic tools available including stone analysis crystalluria aprt activity red blood cells make diagnosis easy confirm aprt deficiency suspected however lack recognition metabolic disorder frequently resulted delay diagnosis treatment grave consequences early recognition treatment aprt deficiency crucial importance prevent irreversible loss renal function review summarizes genetic metabolic mechanisms underlying dha stones formation chronic kidney disease along issues diagnosis management aprt deficiency moreover report mutations aprt gene responsible aprt deficiency french patients families including pediatric cases families among patients identified biochemistry laboratories necker hospital paris
background next generation dna sequencing ngs genome mining actinomycetes microorganisms currently one promising strategies discovery novel bioactive natural products potentially revealing novel chemistry enzymology involved biosynthesis approach also allows rapid insights biosynthetic potential microorganisms isolated unexploited habitats ecosystems many cases may prove difficult culture manipulate laboratory streptomyces leeuwenhoekii formerly streptomyces strain isolated hyper arid high altitude atacama desert chile shown produce novel polyketide antibiotics results present novo sequencing leeuwenhoekii linear chromosome two extrachromosomal replicons circular psle linear psle single contigs obtained combining pacific biosciences smrt pacbio illumina miseq technologies identified biosynthetic gene clusters chaxamycin chaxalactin hygromycin desferrioxamine metabolites previously shown produced strain nat prod additional putative gene clusters specialised metabolites well gene clusters polyketides non ribosomal peptides also identified three gene clusters encoding novel lasso peptides conclusions leeuwenhoekii genome contains gene clusters apparently encoding biosynthesis specialised metabolites completely novel uncharacterised project served evaluate current state ngs efficient effective genome mining high actinomycetes pacbio technology permits assembly actinomycete replicons single contigs accuracy assembled illumina sequence permitted correction omissions found homopolymers pacbio assembly exacerbated high content actinomycete dna also allowed obtain sequences termini chromosome linear plasmid assembled pacbio propose experimental pipeline uses illumina assembled contigs addition reads complement current limitations pacbio sequencing technology assembly software
human metabolism ethylhexyl phthalate dehp studied single oral dose male volunteer avoid interference background exposure ring labelled dehp analogue dosed excretion three metabolites mono ethyl hydroxyhexyl phthalate mehp mono ethyl oxohexyl phthalate oxo mehp mono ethylhexyl phthalate mehp monitored urine serum peak concentrations metabolites found serum urine mehp mehp oxo mehp major metabolite serum mehp major metabolite urine mehp followed oxo mehp mehp excretion urine followed multi phase elimination model absorption distribution phase half life times excretion first elimination phase approximately slightly higher half life times oxo mehp half life times second phase beginning post dose mehp mehp oxo mehp time window decrease excreted concentrations oxo mehp observed first elimination phase post dose mean excretion ratios mehp oxo mehp mehp mehp second elimination phase post dose mean excretion ratios mehp oxo mehp mehp excretion ratio mehp oxo mehp remained constant time mean dehp dose excreted urine comprising mehp mehp oxo mehp
introduction pancreatic ductal adenocarcinoma cancer pdac fourth leading cause cancer death worldwide recently two chemotherapy regimens proven improve median overall survival comparison gemcitabine based better understanding tumor molecular biology role tumor microenvironment monoclonal antibodies mabs could interesting new type targeted treatment pdac areas covered preclinical clinical trials evaluated efficacy several mabs pancreatic cancer treatment review underline important targeted pathways mabs involved disease including egfr igf vegf vegfr notch wnt immune checkpoints expert opinion despite promising results preclinical phase trials addition mabs standard chemotherapy association target agents seems confirm results following phase iii trials pancreatic cancer patients however improved patient selection treatment based molecular characteristics association reliable predictive biomarkers identified efficacious treatment approaches minimizing toxicity profile drugs
two newly established canine histiocytic sarcoma cell lines designated pwc fcr obtained brain articular tumors respectively cell lines phagocytic ability modal chromosome aberrations although morphologic features cells similar immunocytochemical examinations revealed pwc cell line expressed dendritic cell macrophage markers contrast fcr cell line immunonegative consistently positive dendritic cell markers moreover reverse transcription polymerase chain reaction analyses confirmed histiocytic differentiation cell lines results suggest central nervous system may tendency undifferentiated compared cases organs addition newly established cell lines also tumorigenic metastatic immunodeficient mice supporting cell lines used new tumor models investigating canine histiocytic diseases
group innate lymphoid cells ilc defined expression transcription factor retinoid related orphan receptor gamma play key roles regulation inflammation immunity gastrointestinal tract associated lymphoid tissues ilc consist largely two major subsets ncr ilc lti like ilc also demonstrate significant plasticity heterogeneity recent advances begun dissect relationship ilc subsets define distinct functional states within intestinal tissue microenvironment review discuss ever expanding roles ilc context intestinal homeostasis infection inflammation focus comparing contrasting relative contributions ilc subsets
synthetic polyesters deeply impacted various biomedical engineering fields tissue scaffolding therapeutic delivery currently many applications involving polyesters explored polymers derived monomers endogenous human metabolism examples monomers include glycerol xylitol sorbitol lactic sebacic citric succinic alpha ketoglutaric fumaric acids terms mechanical versatility crystallinity hydrophobicity biocompatibility polyesters synthesized partially completely monomers display wide range properties flexibility macromolecular properties allows materials tailored according needs particular application along presence natural monomers allows high probability biocompatibility also added benefit class polyesters environmentally friendly many materials used biomedical engineering selection monomers may limited nature polymers produced potential produce enormous number successes vitro vivo
foster connection biochemistry supporting prerequisite concepts collection activities explicitly link general organic chemistry concepts biochemistry ideas written either assigned pre class work recitation activities assessed student learning gains using activities alone combination regularly integrated clicker discussion questions learning gains determined student performance pre post tests covering key prerequisite concepts biochemistry course exams stu dent self evaluation long term retention material assessed using comprehensive exam given subset students results show using preclass exercises combination integrative questions effective improving student performance short long term similar results obtained large research institution large class enrollments private liberal arts college moderate enrollments international union biochemistry molecular biology
modern biomedical technology development high performance sensing methods dopamine critical issue vital role human metabolism report new kind bioaffinity sensor based surface plasmon resonance spr using dopamine receptor recognition element conjugate synthesized using bovine serum albumin bsa protein characterized matrix assisted laser desorption ionization time flight mass spectrometry maldi tof biosensor surface constructed immobilization bsa conjugate onto spr gold surface physical adsorption atomic force microscopy afm investigations revealed bsa conjugate homogeneously distributed sensor surface specific interaction immobilized bsa conjugate studied spr based principle indirect competitive inhibition biosensor could detect linear dynamic range ppt ppb biosensor highly specific showed significant interference potent interferences ascorbic acid uric acid analogues viz dihydroxyphenyl acetic acid dopac dihydroxyphenyl alanine dopa sensor surface displayed high level stability repeated regeneration affinity reaction cycles since biosensor simple effective based utilization natural receptor study presents encouraging scope development portable detection systems vitro vivo measurement clinical medical diagnostics elsevier rights reserved
ubiquitin conjugating enzyme ubes family protein ubiquitin proteasome system highly expressed several types cancers however roles oral squamous cell carcinoma oscc yet well elucidated purpose study clarify functional activities ubes osccs analyzed expression levels ubes nine oscc cell lines primary oscc tissues quantitative reverse transcriptase polymerase chain reaction western blotting immunohistochemistry ihc correlations ubes expression clinical classifications osccs analyzed using ihc scoring system also used ubes knockdown oscc cells functional assays proliferation assay flow cytometry western blotting ubes overexpressed osccs vitro vivo correlated significantly primary tumoral size cellular growth decreased cell cycle arrested phase ubes knockdown shubes cells expression level target ubiquitin proteasome system increased shubes cells lower anaphase activity promotes complex subunit apc ubiquitin ligase compared shmock cells findings might promote understanding relationship ubes overexpression oral cancer proliferation indicating ubes would potential biomarker therapeutic target osccs elsevier inc rights reserved
development novel highly sensitive headspace sorptive extraction hsse method combination thermal desorption gas chromatography coupled mass spectrometer allowed identification thymol several phase metabolites human urine combined enzymatic hydrolysis glucuronated sulphated phase metabolites thymol respective phase metabolites prior analysis even trace quantities hitherto detected thymol phase metabolites could identified urine samples test persons oral administration thymol proven human metabolism leads hydroxylation aromatic ring well isopropyl side chain hydroxylation iso propyl group results formation rather unstable cymene diol corresponding dehydration product cymene ene could clearly detected human urine samples furthermore aromatic hydroxylation products cymene diol oxidation product cymene dione cymene diol also unambiguously identified comparison synthesized reference compounds elsevier rights reserved
primary immunodeficiencies pids group rare genetic diseases resulting impairment one functions human immune system common variable immunodeficiency cvid one prevalent pids yet despite extensive genetic analysis patients monogenetic diagnosis led theory cvid must polygenetic condition alternative theory monogenetic polygenetic underlying cause cvid epigenetic phenomena causal majority cvid patients briefly discuss epigenetic regulation cell biology development current examples epigenetic diseases causing cvid like primary antibody deficiencies observations may guide future investigation role epigenetics cvid
mycoplasmas opportunistic parasites species suggested preferentially colonize tumor tissue cancer patients could demonstrate annotated thymidine phosphorylase gene genome mycoplasma hyorhinis encodes pyrimidine nucleoside phosphorylase pynphyor efficiently catalyzes thymidine also uridine phosphorolysis kinetic characteristics pynphyor catalyzed nucleoside nucleoside analogue phosphorolysis determined demonstrated expression enzyme mycoplasma infected cell cultures dramatically alters activity various anticancer antiviral nas halogenated pyrimidine nucleosides including trifluorothymidine tft due close association human cancers presence mycoplasmas may markedly influence therapeutic efficiency nucleoside based drugs
alveolar type epithelial atii cell highly specialised synthesis storage intracellular lamellar bodies phospholipid destined secretion pulmonary surfactant alveolus regulation enzymology surfactant phospholipid synthesis metabolism extensively characterised molecular functional levels understanding surfactant phospholipid metabolism vivo either healthy especially diseased lungs still relatively poorly understood review integrate recent advances enzymology surfactant phospholipid metabolism metabolic studies vivo experimental animals human subjects highlight developments application stable isotope labelled precursor substrates mass spectrometry probe lung phospholipid metabolism terms individual molecular lipid species identify areas comprehensive metabolic model would considerable potential direct application disease states elsevier rights reserved
present work describes electrochemical reduction azo dye sudan iii methanol mol bunbf applied potential promotes discoloration commercial sample reduction products analyzed high performance liquid chromatography optimized conditions aromatic amines carcinogenic potentiality harmful compounds aniline benzidine toluidine dimethylaniline oxydianiline metileno bis methylaniline aminobiphenyl formed azo bond cleavage electrochemical reduction compared chemical reduction using sodium thiosulfate findings illustrates commercial sudan iii reductive condition forms number products known active genotoxins technique could used mimic important redox reactions human metabolism environment highlighting possible formation products toxic original dyes
rna interference rnai involves degradation homologous mrna sequences organisms induced double stranded rna dsrna constructed three hairpin rna hprna prokaryotic expression vectors derived region middle region region nuclear inclusion protein nib gene expressed jmlacy resistance analyses northern blotting showed different hprnas different abilities protect tobacco plants infection potato virus pvy resistance rna mediated
increased expression metalloprotease meprin beta associated fibrotic syndromes alzheimer disease hence regulation meprin activity might suitable strategy treatment conditions meprin beta type transmembrane protein released cell surface ectodomain shedding protease expressed inactive zymogen requires proteolytic maturation tryptic serine proteases present study demonstrate first time differences activation soluble membrane bound meprin beta suggest transmembrane serine protease tmprss matriptase new potent activator cleaving propeptide meprin beta arg asn determined show tmprss pancreatic trypsin capable activating full length meprin beta cell surface analysed specific fluorogenic peptide cleavage assay western blotting confocal laser scanning microscopy clsm maturation full length meprin beta required activity cell surface sheddase releasing ectodomains transmembrane proteins previously shown amyloid precursor protein app
although nuclear magnetic resonance nmr well established routine clinical imaging technique magnetic resonance imaging mri application tool metabolic investigations humans much less widespread medical community date laboratories combined scientific interest technical expertise especially vivo nmr spectroscopy facilities required perform meaningful nmr studies human metabolism among published reports studies using vivo nmr spectroscopy diabetes mellitus generally physiology pathophysiology glucose homeostasis dominant topic situation related historical role yale center shulman rothman development vivo nmr collaboration nmr methodologists endocrinology section yale medical school shulman thus field diabetes metabolism vivo nmr already contributed significantly increasing understanding basic physiology well pathophysiological mechanisms practical research note first describes basic principles vivo nmr provides practical information use technique metabolic investigations metabolic parameters accessible vivo nmr reviewed illustrated examples literature
abasic sites dna arise variety circumstances including destabilization bases oxidative stress intermediate base excision repair spontaneous loss persistence yield blockade rna transcription dna synthesis source mutations organisms developed enzymatic means repairing abasic sites dna generally involves dna repair pathway initiated repair protein creating phosphodiester break nick adjacent site base loss describe method analyzing manner repair endonucleases differ way create nicks dna distinguish using cellular crude extracts
present study aimed investigate regulatory effect probiotics expression toll like receptors tlrs ulcerative colitis rat model determine role probiotics underlying mechanisms develops progresses rat models rats randomly allocated one four following groups healthy control model iii golden bifid treatment group tlr monoclonal antibody tlrmab intervention group rat model established using trinitro benzene sulfonic acid general status histological changes rats scored using disease activity index histopathological scoring method respectively rats expression tlr tlr measured using reverse transcription quantitative polymerase chain reaction expression tlr tlr model group significantly higher healthy control group however compared model rats received either golden bifid treatment tlrmab intervention exhibited significantly decreased mrna expression levels tlr tlr development characterized abnormal immune response intestines probiotics alleviated inflammatory reactions rats underlying mechanism may associated expression tlrs subsequent release inflammatory cytokines
background rituximab rtx increasingly used treatment neuromyelitis optica spectrum disorder nmo administration regimen consensual reliable biomarker rtx efficacy cases induction rtx administered systematically every months objective assess efficacy safety maintenance regimen based memory cell mbc detection methods conducted study two french centers including patients nmo received induction therapy rtx compared number administered infusions relapses edss depending two maintenance schemes administration rtx infusion every months scheme based regular mbc detection rtx administered mbc results patients included mean age years sex ratio aquaporin antibodies positive patients regimen patients received infusions per year whereas received infusion per year mean interval infusions months without decrease clinical efficacy conclusion study mbc based administration rtx allowed personalizing treatment administration several cases lower cumulative dose without loss efficacy elsevier rights reserved
brassica napus grown hydroponic conditions responses removal external supply sulfur analysed roots leaves different developmental age concentrations sulfate nitrate greatest older leaves least younger leaves whilst phosphate greatest roots youngest leaves least old leaves deprivation resulted decreases tissue sulfate concentrations variable rates order roots young leaves middle aged leaves oldest leaves phosphate concentrations unaffected nitrate concentrations depleted oldest leaves expression representative members sulfate transporter gene family assessed northern blotting respective tissues group transporters high affinity type induced response deprivation tissues except old leaves expression detected greatest extent roots groups brassica group sulfate transporter reported accession number transporters showed either small induction deprivation group transporters localised tonoplast membrane thought involved vacuolar sulfate efflux induced deprivation complex pattern expressed root mature leaves strongly induced sulfur deprivation roots also induced middle aged leaves alone expressed deprivation parallel observed pattern tissue sulfate concentrations expression patterns indicated differences intracellular sulfate pools localised aspects signal transduction pathway link tissue sulfate status sulfur nutrition regulated gene expression
lactic acid bacteria lab ancient organisms biosynthesize functional cytochromes get atp respiration besides sugar fermentation evolved electrogenic decarboxylations atp forming deiminations right balance sugar fermentation decarboxylation deimination ensures buffered environments thus enabling lab survive human gastric trait colonize gut complex molecular cross talk lab host exists lab moonlight proteins made response gut stimuli promote bacterial adhesion mucosa stimulate immune cells similarly lab present human enterocytes activate specific gene expression specific genes furthermore lab antagonistic relationships microorganisms constitute basis anti infective role histamine tyramine lab bioactive catabolites act cns causing hypertension allergies nevertheless lab biosynthesize gamma amino butyrate gaba relaxing effect gut smooth muscles beta phenylethylamine controls satiety mood since lab reduced amino acid biosynthetic abilities developed sophisticated proteolytic system also involved antihypertensive opiod peptide generation milk proteins short chain fatty acids glycolytic phosphoketolase end products regulating epithelial cell proliferation differentiation nevertheless constitute supplementary energy source host causing weight gain human metabolism also affected anabolic lab products conjugated linoleic acids cla cla isomers reduce cancer cell viability ameliorate insulin resistance others lower hdl ldl ratio modify eicosanoid production detrimental health effects appreciated lab feature ability fix selenium seleno cysteine thus opening interesting perspectives utilization antioxidant nutraceutical vectors
polygalacturonase gene family found enriched pollen several species however little currently known function gene pollen development investigate exact role gene played pollen development family general one putative gene brassica campestris male fertility bcmf isolated chinese cabbage brassica campestris ssp chinensis syn rapa ssp chinensis characterized pcr northern blotting situ hybridization used analyse expression pattern bcmf antisense rna technology applied study function gene bcmf expressed particular tapetum microspore late stages pollen development antisense rna transgenic plants displayed decreased expression bcmf showed pollen morphological defects resulted reduced pollen germination efficiency transmission electron microscopy revealed homogeneous pectic exintine layer pollen facing exterior developed predominantly occupied intine reversing normal proportional distribution internal endintine layer external exintine transgenic pollen inhibition bcmf also resulted break previously formed tectum baculae beginning binucleate stage result premature degradation tapetum several lines evidence including patterns bcmf expression phenotypic defects suggest sporophytic role exine patterning gametophytic mode action bcmf intine formation bcmf might act ordinator late stages tapetum degeneration subsequently regulation wall material secretion turn exine formation bcmf might also play role intine formation possibly via regulation dynamic metabolism pectin
tumor homing peptides thps specific representative breast cancer cell line mcf carefully selected basing phage displayed peptide library freely available web namely tumorhope database tumor homing peptides selected thps synthesized evaluated terms affinity toward mcf cells tested thps best performing peptide sequences scrambled sequence separately conjugated spherical gold nanoparticles yielding stable nanoconjugates thp nanoconjugates examined ability actively target mcf cells comparison noncancerous fibroblast cells thp gold nanoconjugates exhibited good selectivity binding affinity flow cytometry low cytotoxicity assayed cell death experiments uptake targeted nanoconjugates breast cancer cells confirmed transmission electron microscopy analysis work demonstrates possible exploit conjugation short peptides selected phage displayed libraries develop nanomaterials reliably endowed tumor targeting potential irrespective specific knowledge target cell biology elsevier ltd rights reserved
background aims hepatic lipotoxicity results contributes obesity related disorders challenge study human metabolism fatty acids fas liver combined palmitate imaging positron emission tomography pet compartmental modeling determine rates hepatic uptake oxidation storage well triglyceride release pigs human beings methods anesthetized pigs underwent palmitate pet imaging fasting euglycemic hyperinsulinemia metabolic products fas measured arterial portal hepatic venous blood imaging methodology tested human subjects obese subjects plasma palmitate kinetic analyses used quantify systemic visceral lipolysis results pigs pet derived corresponding measured fluxes uptake esterification triglyceride release differ correlated human beings obese subjects increased hepatic oxidation compared controls mean standard error mean mol min uptake esterification rates differ obese subjects controls liver oxidation correlated plasma insulin levels adipose tissue systemic insulin resistance hepatic esterification correlated systemic release plasma conclusions pet imaging used measure metabolism liver using technology found obese individuals increased hepatic oxidation context adipose tissue insulin resistance increased flux visceral fat flux visceral fat proportional mass corresponding depot
current approach obtain bioengineered lungs future alternative transplantation based seeding stem cells decellularized lung scaffolds fundamental question solved approach drive stem cell differentiation onto different lung cell phenotypes whereas use soluble factors agents modulate fate stem cells established early stage research type cells took longer recognize physical microenvironment locally sensed stem cells substrate stiffness architecture cyclic stretch shear stress air liquid interface oxygenation gradient also contributes differentiation potential role played physical stimuli would particularly relevant lung bioengineering since cells within organ physiologically subjected two main stimuli required facilitate efficient gas exchange air ventilation blood perfusion across organ present review focuses describing cell mechanical microenvironment modulate stem cell differentiation stimuli could incorporated lung bioreactors optimizing organ bioengineering
balancing selection describes form natural selection results persistence multiple variants trait intermediate frequencies within populations offering snapshot multiple occurring functional variants interactions systems balancing selection reveal evolutionary mechanisms favouring emergence persistence adaptive variation natural populations focus mechanisms several functional variants given trait arise process typically requiring multiple epistatic mutations highlight balancing selection favour specific features genetic architecture review evolutionary molecular mechanisms shaping architecture first balancing selection affects number loci underlying differentiated traits respective effects control one loci favours persistence differentiated functional variants limiting intergenic recombination impact may sometimes lead evolution supergenes chromosomal rearrangements particularly inversions preventing adaptive combinations dissociated increasingly noted features systems similarly due frequency heterozygotes maintained balancing selection dominance may key property adaptive variants high heterozygosity limited recombination also influence associated genetic load linked recessive deleterious mutations may sheltered capture deleterious elements locus balancing selection may reinforce polymorphism promoting heterozygotes finally according recent genomewide scans balanced polymorphism might pervasive generally thought stress need functional ecological studies characterize evolutionary mechanisms operating systems
transcript pool plant part given condition collection mrnas pave way biochemical reaction plant stimuli past decades transcriptome study advanced northern blotting rna sequencing rna seq techniques real time quantitative polymerase chain reaction pcr microarray significant ones questions addressed studies also matured solitary process expression atlas marker assisted genetic enhancement genes networks involved various developmental processes plant parts elucidated also stress tolerant genes highlighted transcriptome plant altered expression target gene given information downstream genes marker information used breeding improved varieties fortunately data generated transcriptome analysis made freely available ample utilization comparison review discusses wide variety transcriptome data generated plants includes developmental stages abiotic biotic stress effect altered gene expression well comparative transcriptomics special emphasis microarray rna seq data used determine regulatory gene networks subsequently utilized generating improved plant varieties
cms cytoplasmic male sterility based hybrid rye secale cereale breeding effective pollen fertility restoration essential prerequisite achieving maximum grain yield one hand minimizing ergot claviceps purpurea infestation restorer genes cms inducing pampa cytoplasm derived landraces collected iran argentina used breeders achieving goal restorer genes four germplasm sources altevogt iran iii trenelense pico gentario analysed producing three way cross hybrids elite cms single cross pollinators without given restorer gene materials evaluated large drilled plots restorer index grain yield plant height traits six environments experiment restorer gene altevogt used seven pairs marker selected carrier non carrier backcross lines served pollinators experiment pollinators backcross line pairs three germplasm sources lines grouped high low restorers respectively using testcrosses highly diagnostic cms tester hybrids carrying exotic restorer gene suffered significant grain yield reduction taller experiments respectively thousand kernel weight reduced whereas quality traits slightly affected traits significant genetic variance existed among testcrosses presence absence given exotic restorer gene offers chance breeder reduce ultimately overcome presently observed performance reductions brought exotic restorer genes
alpha thalassemia belongs inherited diseases large genomic deletions duplications represent significant proportion causative mutations recently large alpha globin gene cluster rearrangements mainly detected gap pcr southern blotting methods significant drawbacks tested recently developed multiplex ligation dependent probe amplification mlpa assay deletional screening alpha globin gene cluster cohort individuals suspected alpha globin alteration doubtful mutations found using conventional methods alpha thalassemia carriers patients hbh found causative alpha globin defects thalassemia intermedia patients carriers heterozygous beta globin mutations inheritance homozygous alpha genes triplication detected mlpa results subsequently confirmed real time pcr study shows mlpa effectively identify different unknown types alpha globin gene rearrangements allow characterizing previously unsolved alpha thalassemia genotypes elsevier inc rights reserved
rattlesnakes use prey chemical cues ambush site selection relocating envenomated prey following predatory strike ability discriminate non envenomated prey cues widely studied rattlesnake species produce type venoms show high levels snake venom metalloproteinase svmp activity low lethal toxicity lethal dose kills test animals however prey discrimination studies conducted rattlesnake species produce type venom consists low svmp activity high lethal toxicity current study long term captive crotalus oreganus concolor produce type venom tested ability discriminate chemical cues natural sceloporus undulatus peromyscus maniculatus non natural hemidactylus frenatus mus musculus prey cues well ability discriminate mouse carcasses prey envenomation occurred conspecific snakes showed significant levels tongue flicking towards chemical extracts maniculatus musculus suggesting oreganus concolor exhibit innate experience based plasticity response prey chemical cues addition oreganus concolor able discriminate prey sources envenomation occurred conspecific indicating type venomous species also discriminate chemical cues
anticoagulant drug warfarin occurs pair enantiomers differentially metabolized human cytochromes cyp warfarin metabolized primarily cypa hydroxywarfarin cypa hydroxywarfarin carbonyl reductases diastereoisomeric alcohols warfarin metabolized primarily cypc hydroxywarfarin potential warfarin drug interactions could occur wide range drugs metabolized number interactions reported efficacy warfarin affected primarily metabolism warfarin altered copyright elsevier science inc
increase unspliced cox transcript accompanying decrease frequency rna editing near exon intron junction intron binding site ibs reported cold treated wheat attempt made clarify whether similar phenomenon occurs rice levels unspliced cox transcript increased editing ibs abolished cold treatment accumulation coxii protein remained unaffected accumulation intron containing transcripts another eight mitochondrial genes introns total analyzed northern blotting semi quantitative pcr increase intron adjoining cdna cold treatment observed six rna editing sites ibs four genes tested status sequencing cdna one sites nad transcript showed close association splicing editing splicing occurring simultaneously irrespective cold treatment two sites intron containing cox rps transcripts sensitive cold editing frequency began decrease day cold treatment finally exhibited tight association splicing days later sites efficiently edited intron spliced transcripts fully edited six sites
enzyme linked immunosorbent assay elisa one popular indispensable tools molecular biology despite numerous advances elisa methods markedly improve sensitivity throughput detection hallmark elisa continues repeated pipetting fluids cumbersome easily introduce errors contaminations robotics despite obvious advantages remains expensive designed produced cheap pillar plates using stereolithography based printing readily inserted conventional well plates serve substrate elisa demonstrate elisa using pillar plates affords comparable specificity sensitivity detection serum antibodies traditional sandwich elisa markedly reducing time efforts associated fluid transfer results underscore pillar plates attractive platform rapid yet robotics free elisa
human metabolism fundamental important aspect thermal comfort prediction however date previous thermal comfort studies tended treat metabolic rate constant value depends activity level without consideration ambient thermal conditions paper explore impacts indoor thermal conditions occupants metabolic rate try describe impacts straightforward way climate chamber experiments including physiological measurements subjective questionnaires conducted temperatures ranging cold hot two clothing insulation levels results indicate human metabolic rate significantly affected thermal conditions ambient temperature clothing insulation changing trend metabolic rate expressed second order polynomial equation actual thermal sensations predicted values generally neutral thermal sensation corresponds lowest metabolic value metabolic rate increases thermal sensation departs neutral cold warm side instance metabolic rate sensation cold higher neutral sensation findings especially modified equations describing metabolic rate changes serve useful reference future thermal comfort studies elsevier rights reserved
sphingomyelin phosphodiesterase smpd encodes neutral sphingomyelinase nsmase key molecule skeletal development well cytodifferentiation odontoblasts alveolar bone however effects nsmase cytodifferentiation periodontal ligament pdl cells still unclear study authors analyzed effects smpd cytodifferentiation human pdl hpdl cells authors found smpd increases mrna expression calcification related genes alkaline phosphatase alpase type collagen osteopontin osterix osx runt related transcription factor runx hpdl cells contrast inhibitor nsmase clearly decreased mrna expression alpase type collagen osteocalcin hpdl cells suggesting smpd enhances hpdl cytodifferentiation next authors used exome sequencing evaluate genetic variants smpd japanese population aggressive periodontitis agp among unrelated subjects authors identified single nucleotide polymorphism snp smpd putative genetic variant agp among japanese people moreover smpd harboring snp increase sphingomyelinase activity mrna expression alpase type collagen osteopontin osx runx suggesting snp inhibits smpd effect cytodifferentiation hpdl cells data suggest smpd plays crucial role maintaining homeostasis pdl tissue
hybridization divergent species analyzed elucidate expression patterns distinct parental characteristics well provide information extent reproductive isolation species known hybrid cross two rattlesnakes highly divergent venom phenotypes provided opportunity examine occurrence parental venom characteristics hybrids well ontogenetic shifts expression characters hybrids aged although venom phenotypes adult rattlesnake venoms known many species effect hybridization phenotype inheritance well understood effects hybridization venom ontogeny yet investigated current study investigates phenomena resulting hybridization male snake type degradative venom crotalus oreganus helleri southern pacific rattlesnake female snake type highly toxic venom crotalus scutulatus scutulatus mojave rattlesnake sds page enzymology western blot reversed phase hplc hplc used characterize venom helleri male scutulatus female two hybrid offspring aged general crotalus helleri scutulatus hybrid venoms appeared exhibit overlapping parental venom profiles several different enzyme activity patterns hybrids expressed helleri father specific myotoxins well scutulatus mother specific mojave toxin snake venom metalloprotease activity displayed apparent sex influenced expression patterns hybrid serine protease activities intermediate parental activities scutulatus helleri hybrid male venom profile provided strongest evidence type type venom characteristics expressed simultaneously hybrid venoms snake contained distinctive characteristics parental species however possibility sex influenced development metalloprotease activity seen ontogenetic shifts hybrid female may influence levels expression type type characteristics hybrid venoms ultimately chronological analysis known hybrid system reveals distinct characteristics used determining successful hybridization snakes follow type type trend rattlesnake venom composition namely presence metalloprotease activity mojave toxin published elsevier ltd
low temperature plays crucial role seasonal development woody plants may directly impact crop production particularly temperate fruit trees given high genetic variability adaptability different climatic conditions almond prunus dulcis mill interesting model understand mechanisms regulating low temperature sensing fruit trees paper report cloning characterization two genes pdcbf pdcbf belonging repeat binding factor cbf family transcription factors southern blotting analysis showed family composed least five members almond shoots propagated vitro transcription genes rapidly induced low temperature suggesting involvement cold acclimation transactivation assays showed pdcbf pdcbf could bind dehydration responsive element repeat containing sequences activators gene expression addition induction pdcbfs cold higher towards end day agreed expression pattern pddehydrin predicted cbf target gene furthermore pdcbf pdcbf also transiently induced abscisic acid drought treatments considering bin mapping analysis correlated pdcbfs pddhn respectively linkage groups two different quantitative trait locicontrolling blooming time relevant perform association studies may validate effect trait
overarching theme society toxicology pathology annual symposium basis relevance variation toxicologic responses session focused genetic variation potential source variability toxicologic responses within nonclinical toxicity studies explored knowledge genetic traits might enable targeted prospective retrospective studies drug development human health risk assessment session influence genetic sequence variation epigenetic modifications toxicologic responses implications understanding risk explored overview presentations session summarized goal exploring ramifications genetic epigenetic variability within across species toxicity studies disseminating information regarding novel tools harness variability advance understanding toxicologic responses across populations
purpose investigate role serine threonine kinase sik member saltinducible kinase sik family insulin dependent cell survival hyperglycemia induced cell death muller glia methods expression studies performed pcr immunostaining northern blotting immunoblotting insulin dependent changes sik activity investigated vitro kinase assays mio muller cell line akt activation studied immunoblotting cell death tunel assay potential role sik insulin signaling explored overexpression rna knock approaches effects hyperglycemia studied vitro vivo streptozotocin injected rats results sik expression detected throughout adult retina except outer nuclear layer insulin stimulation mio cells resulted rapid fold increase sik activity increased insulin receptor substrate irs sik interaction reduced cell death pakt levels following insulin treatment modulated sik activity hyperglycemia increased sik activity expression concomitant decreased akt activation enhanced apoptosis whereas knockdown sik normo hyperglycemic conditions resulted rapid increase pakt levels blunted cell death sik overexpression normoglycemia opposite effect sik activity increased significantly within weeks induction hyperglycemia rat retina conclusions results indicate sik functions negative modulator insulindependent survival pathway contributes hyperglycemia induced cell death muller glia vitro although still hypothetical point study suggests sik could serve similar role development diabetic retinopathy vivo represents potential target control disease progression
hypertension high blood pressure major public health problem affecting billion people worldwide complications including stroke heart failure kidney failure regulation blood pressure multifactorial reflecting genetic susceptibility utero environment external factors obesity salt intake keeping arthur guyton hypothesis kidney plays key role blood pressure control data clinical studies physiology genetics shown hypertension driven failure kidney excrete excess salt normal levels blood pressure number rare mendelian blood pressure syndromes shed light molecular mechanisms involved dysregulated ion transport distal kidney one particular familial hyperkalemic hypertension fhht autosomal dominant monogenic form hypertension characterised high blood pressure hyperkalemia hyperchloremic metabolic acidosis hypercalciuria clinical signs fhht treated low doses thiazide diuretic mirrors gitelman syndrome features inverse phenotype hypotension hypokalemic metabolic alkalosis hypocalciuria gitelman syndrome caused loss function mutations thiazide sensitive cotransporter ncc however fhht patients mutations scla locus encoding ncc instead mutations identified genes revealed key signalling pathway regulates ncc several key transporters ion channels kidney critical regulation wnk kinase signalling pathway subject review
different monomeric substrate polymeric substrate needs undergo slow hydrolysis process becoming available consumption bacteria hydrolysis products available heterotrophs low concentration reduce competitive advantages heterotrophs nitrifiers mixed culture therefore links nitrification process expected study three lab scale sequencing batch reactors different total substrate ratio influent performed parallel investigate influence nitrification process activated sludge system results showed increase ratio apparent sludge yields decreased concentration effluent increased change ratio influent also altered cycle behaviors activated sludge increase ratio ammonium nitrite utilization rate increased times respectively pcr results showed abundance nitrifiers activated sludge ratio orders magnitude higher ratio however abundance total bacteria decreased orders magnitude former two latter fish observation confirmed nitrifiers microcolony became bigger robust increase ratio paper paves path understand role affecting nitrification process biological wastewater treatment systems elsevier ltd rights reserved
tobacco beta glucanase gene glu alfalfa defensin gene alfafp bivalent gene glu afp introduced tomato micro tom via agrobacterium mediated method transformants obtained confirmed gus histochemical staining pcr southern blotting northern blotting analysis glu apf probes revealed variation expression among transformants transcription level one three copies transgene respectively integrated tomato nuclear genome performance test resistance ralstonia solanacearum generation transgenic tomato lines showed transgenic lines exhibited higher resistance infected pathogens nontransgenic plants resistance levels related expression levels transgene showing dose effect transgenic tomato harboring glu afp cassette showed highest disease resistance suggested alfafp glucanase genes synergistical effects resistance solanacearum independent lines high disease resistance low variability stable expression transgenes could selected studies molecular breeding
today hectic lifestyle health seriously hampered due sedentary work paper represents idea walking based wearable piezoelectric device provides alternate means powering mobile phone batteries moreover simultaneously serves another purpose providing emergency torch since mechanism device based walking device promotes human metabolism well physical fitness hence seen health gadget encourages walking exercise means power emergency torch mobile phone batteries portable device comprises piezoelectric power generator connectors charging different mobile phone batteries light emitting diode led embedded shoe providing emergency torch piezoelectric circuit harvests energy user trotter movement energy amplified rectified using convertor regulated volts required ion mobile battery using device man weighing charge mah capacity battery hours normal walking
capripoxviruses comprising sheep pox virus goat pox virus lumpy skin disease virus cause serious diseases domesticated ruminants notifiable world organization animal health report describes evaluation mobile diagnostic system enigma field laboratory performs automated sequential steps nucleic acid extraction real time pcr detect capripoxvirus dna within laboratory endemic field settings prepare stable reagents could deployed field settings lyophilized reagents used employed established diagnostic pcr assay stabilized reagents demonstrated analytical sensitivity equivalent greater established laboratory based pcr test utilizes wet reagents limit detection complete assay pipeline approximately one log sensitive laboratory based pcr assay concordant results generated mobile pcr system compared laboratory based pcr using samples collected africa asia europe experimental studies representing clinical cases sheep pox goat pox lumpy skin disease furthermore mobile assay reported positive results insitu using specimens collected dairy cow morogoro tanzania exhibiting clinical signs lumpy skin disease data support use mobile pcr systems rapid sensitive detection capripoxvirus dna endemic field settings
rainbow trout gastroenteritis rtge syndrome affecting progressively sites various european countries causing significant economical losses rainbow trout industries candidatus arthromitus yet culturable bacteria microorganism responsible rtge molecular methods identified important tool identification microorganism early fast specific detection arthromitus using specific primers probes important goals aquaculture sector present study used polymerase chain reaction pcr using universal primers annealing rrna gene obtain amplification products representatives microbiota present intestinal content trouts including arthromitus present denaturing gradient gel electrophoresis dgge produce dna finger printings corresponding microbiota present intestinal contents trout analysed specific dna probe designed within rdna used dot blot southern blot techniques detect unculturable bacterium arthromitus dot blot applied directly onto dna extracted intestinal contents allowed fast identification samples containing arthromitus southern blotting allowed identification specific dna band corresponding arthromitus among various dna bands obtained utilisation universal primers run dgce molecular methods dot blot southern blot useful methods fast identification unculturable arthromitus elsevier rights reserved
background objectiveperiodontal disease pathogenesis comprised complex inflammatory immune response oral bacterial dysbiosis like inflammatory diseases sexual dimorphism evident periodontal diseases periodontitis inflammatory chemokines direct neutrophils migrate site infection neutralize pathogen interestingly chemokines also involved regulating pathogen induced osteoclast formation previous reports show differences bone turnover lymphocyte recruitment sexes hypothesize chemokine expression differentially regulated sex thus results differential osteoclast formation material methodsmale female mice utilized isolate neutrophils based expression lyg specific well defined osteoclast progenitors cells stimulated lipopolysaccharide lps analyzed neutrophil infiltration gene expression defined osteoclast progenitors primed macrophage colony stimulating factor receptor activator ligand stimulated lps osteoclasts enumerated via trap stain mrna isolated gene expression analysis via quantitative polymerase chain reaction resultsin response lps male neutrophils vitro respond increased chemokine expression significantly osteoclast formed response lps compared females conclusionsfindings support observations humans regarding sexual dimorphism oral bacterial infections alveolar bone loss males strong inflammatory response bacterial infection resulting increased inflammatory microenvironment reduced pathogenic bacteria clearance increased osteoclast driven bone loss response differential expression key chemokines
although rat hepatitis virus hev identified wild rats cell culture systems virus established recent report suggesting presence antibodies rat hev human sera encouraged cultivate rat hev human cells liver homogenates obtained wild rats rattus rattus indonesia inoculated onto human hepatocarcinoma cells rat hev replicated efficiently plc prf huh hepg cells irrespective genetic group rat hev particles released cultured cells harbored lipid associated membranes surface depleted treatment detergent protease buoyant density sucrose shifting northern blotting analysis revealed genomic rna subgenomic rna infected cells subgenomic rna possessed extreme end sequence guagc downstream highly conserved sequence gaauaaca establishment culture systems rat hev would allow extended studies mechanisms viral replication functional roles hev proteins investigation required clarify zoonotic potential rat hev elsevier rights reserved
background maleic acid multi functional chemical widely used field industrial chemistry producing food additives food contact materials maleic acid may contaminate food release food packages intentional addition raises concern effects excessive dietary exposure maleic acid human health however influence maleic acid human health thoroughly studied silico toxicogenomics approaches found association maleic acid nervous system disease human aim study experimentally explore effects maleic acid human neuronal cells methods microarray based transcriptome profiling performed offer better understanding effects maleic acid human health gene expression profiles human neuroblastoma syy cells exposed three concentrations maleic acid analyzed genes differentially expressed dose dependent manners identified analyzed enrichment analysis expression profile selected genes related inferred functional changes validated using quantitative polymerase chain reaction qpcr specific fluorescence probes applied observe inferred functional changes maleic acid treated neuronal cells results total differentially expressed genes upregulated downregulated identified response treatment maleic acid enrichment analysis showed dna binding metal ion binding significant molecular functions mfs neuronal cells affected maleic acid maleic acid exposure decreased expression genes associated calcium thiol levels cells dose dependent manner levels intracellular calcium thiol levels also affected maleic acid dose dependent discussion exposure maleic acid found decrease cellular calcium thiol levels human neuronal cells transcriptional functional levels study reported first transcriptomic profiling human neuronal cells treated maleic acid also first experimental validation chemical effects predicted silico toxicogenomics approaches proposed approach may useful understanding potential effects poorly characterized chemicals human health
background european society immune deficiencies esid revised common variable immunodeficiency cvid diagnosis criteria incorporating new clinical biological markers new definition appeared restrictive yet evaluated large cohort patients objective objective study evaluate impact new definition large cohort patients primary hypogammaglobulinemia methods evaluation different cvid definitions esid pan american group immunodeficiency pagid esid defi patients included french defi study diagnosis primary hypogammaglobulinemia results using esid pagid definition patients classified cvid new esid definition excluded patients less severe disease whereas presented severe disease major cell defect propose different criteria occurrence opportunistic infection low naive cdd cell count define population severe cell defect sixty two patients fulfilled criteria represented initial cvid population accounted deaths year overall survival confidence interval considered late onset combined immunodeficiency locid conclusions new esid definition cvid still fails exclude large number patients severe cell defect propose new definition defi excluded patients cell defect consider patients locid population poor outcome considered distinct group requiring specific care american academy allergy asthma immunology
type restriction modification systems composed linked restriction endonuclease modification methyltransferase genes serve barriers horizontal gene transfer even though mobile products kill host bacterial cells lost genes process helps maintain frequency systems viable cell population establishment maintenance bacterial host expected involve fine regulation gene expression present study analyzed transcription modification gene regulation within ecorir system northern blotting revealed downstream ecorim gene transcribed monocistronic mrna part larger bicistronic mrna together upstream ecorir gene primer extension rnase protection mutational analysis using lacz gene fusions identified two overlapping promoters ecorim gene transcription within ecorir gene mutational analysis revealed two upstream rich elements within ecorir gene aataaa attataaatata function negative regulators promoters simultaneous substitution two elements resulted fourfold increase beta galactosidase activity five fold increase transcript levels measured rnase protection assay rna measurements ecorim transcript suggested elements decreased ecorim expression interfering transcription initiation ecorim promoters possible roles ecorim promoters negative regulators ecorir system discussed elsevier rights reserved
understanding pathogenic variation plant pathogen populations key development use host resistance managing verticillium wilt diseases highly virulent defoliating pathotype verticillium dahliae previously shown occur one clonal lineage lineage contrast clear association yet shown race clonal lineages race carries effector gene ave avirulent hosts carry resistance gene homologues hypothesis tested race arose single clonal lineage might expected dahliae acquired ave horizontal gene transfer plants hypothesized previously diverse sample dahliae isolates nine clonal lineages race isolates present lineage conversely lineage isolates displayed race phenotype moreover nucleotide sequences ave identical among lineage isolates identical sequences dahliae race isolates genbank finding race single clonal lineage identical ave sequences consistent hypothesis race arose dahliae molecular markers virulence assays also confirmed well established finding pathotype found lineage pathogenicity assays indicated cotton olive isolates pathotype lineage highly virulent cotton olive low virulence tomato
objective background matrix metalloproteinases mmps already identified key players pathogenesis abdominal aortic aneurysm aaa however current data remain inconclusive study expression mmps mrna protein levels investigated relation degradation collagen collagen iii methods tissue samples obtained patients aaa undergoing open aortic repair five healthy controls kidney transplantation expression mmps tissue inhibitor metalloproteinase timp timp measured mrna level using quantitative reverse transcription polymerase chain reaction protein level mmps collagen collagen iii degradation products carboxy terminal collagen cross links ctx ctx iii quantified via enzyme linked immunosorbent assay addition immunohistochemistry gelatine zymography performed results aaa significantly enhanced mrna expression observed mmps compared controls mmps correlated significantly macrophages respectively synthetic smooth muscle cells mmps respectively protein level mmps significantly elevated aaa respectively significant correlation mrna protein observed mmp aaa contained significantly reduced intact collagen twofold whereas collagen iii increased fold regarding degraded collagen iii relative intact collagens observations inverse fold increase ctx fivefold decrease ctx iii mmps correlated collagen respectively collagen iii respectively degraded collagen respectively conclusion significant relationship found mrna protein mmp levels mmps overexpressed aaa mrna protein level mmp protein level mmp detected synthetic smcs collagen iii showed inverse behaviour aaa particular mmps appear associated collagen collagen iii degradation products european society vascular surgery published elsevier ltd rights reserved
role protein dynamics enzyme catalysis one active controversial areas enzymology today researchers claim protein dynamics heart enzyme catalytic efficiency others state dynamics make significant contribution catalysis biochemist student make ferocious arguments area protein dynamics complex fascinating molecular dynamics simulations experiments shown essential question complex motions functional significance particular affect relate chemical reactions within enzymes chemical conformational changes coupled together biomolecular simulations analyse enzyme reactions dynamics atomic detail beyond achievable experiments accurate atomistic modelling essential part play clarifying issues article part special issue entitled protein dynamics experimental computational approaches elsevier rights reserved
polymer brush soft material unit tethered covalently surface scaffolds induce functional structural modification substrate properties surface coating approach attracted special attentions fields stem cell biology tissue engineering regenerative medicine due facile fabrication usability various polymers extracellular matrix ecm like structural features vivo stability summarized polymer brush based grafting approaches comparing self assembled monolayer sam based coating method addition physico chemical characterization techniques surfaces wettability stiffness elasticity roughness chemical composition affect cell adhesion differentiation proliferation also reviewed recent advancements cell biological applications polymer brushes focusing stem cell differentiation supports implants tissue formation understanding cell behaviors polymer brushes scale nanometer length contribute systematic understandings cellular responses interface polymers scaffolds simultaneous effects cell behaviors promising platform designs
metabolites chemicals often ultimate genotoxic species thus vitro routine testing requires use rat liver however question whether represents appropriate surrogate human metabolism previously demonstrated usefulness hepg transformants expressing major human cytochrome cyp isoforms assess genotoxicity metabolites assessed advantages transformants following three aspects first sensitivity transformants confirmed micronucleus induction dimethylbenz anthracene ifosfamide transformants expressing corresponding cypa cypb cypc respectively second using transformants beta endosulfan chemical cyp isoforms contributing genotoxicity unknown found induce cypa mediated pathway result confirmed facts decreased cypa activity using inhibitor short interfering rna sirna repressed induction beta endosulfan endosulfan sulfate one metabolites produced cypa induced transformants harboring empty vector third interaction phase drug metabolizing enzymes demonstrated induction inhibitors uridine diphosphate udp glucuronosyltransferases tamoxifen treated transformants harboring corresponding cypa inhibitors glutathione transferase safrole treated transformants harboring corresponding cypd whereas neither tamoxifen safrole alone induced transformant advantages provide benefits newly established transformants vitro genotoxicity testing reflects comprehensive metabolic pathways including human cyp isoforms also phase enzymes
long used tracer quantifying vivo human metabolism food components biopharmaceuticals nutrients minute amounts mol measured high throughput accelerator mass spectrometry ams isolated chemical extracts biological biomedical environmental samples availability vivo human data sets using tracer would enable current concepts metabolic behavior food components biopharmaceuticals nutrients organized models suitable quantitative hypothesis testing determination metabolic parameters vivo models important specification intake levels food components biopharmaceuticals nutrients accurate estimation radiation exposure ingested essential component experimental design therefore paper illustrates calculation involved determining radiation exposure minute dose orally administered beta carotene alpha tocopherol lutein folic acid four prior experiments administered doses ranged nci radiation exposure ranged whole body liver consideration tissue weighting factor fractional nutrient comparison radiation exposure experienced airline flight across united states
background recent studies suggest immunotherapy using regulatory cells tregs prolongs remission type diabetes tdm report factors possibly affect efficacy treatment methods metabolic immune background children recently diagnosed tdm well untreated subjects year follow presented patients treated autologous expanded high tregs results disease progressed patients insulin dependent years inclusion beta cell function measured peptide levels use insulin best preserved patients treated two doses tregs remission less one dose remission worst untreated controls remissions increased levels tregs could seen peripheral blood adoptive transfer together shift naive cdl cdra memory cdl cdra tregs increasing serum levels proinflammatory cytokines found increased subjects tnf alpha increased untreated group therapeutic tregs dependent survival could improved lymphocytes conclusions disease progression associated changing proportions naive memory tregs slowly increasing proinflammatory activity partially controlled administered tregs therapeutic cells highly dependent conclude therapy administered earliest protect highest possible mass islets also utilize preserved content tregs earlier phases tdm
article presents two integrated laboratory exercises intended show students role amylases aamys saliva detergents laboratory practicals based determination enzymatic activity amylase saliva different detergents using phadebas test quantitative lugol test qualitative different conditions variations temperature alkalinity work also proposes study enzyme stability presence several surfactants oxidizing agents using technical approach proposed laboratory exercises promote understanding physiological function enzyme biotechnological applications aamys detergent industry exercises also promote understanding enzymatic stability performance dependent organism origin necessary properties could modified genetic engineering addition article reinforces development laboratory skills problem solving capabilities ability write laboratory report exercises proposed primarily undergraduate project advanced students biochemical biotechnological sciences laboratory practicals complementary previously published bambed article biochemistry molecular biology education vol detergent proteases
pathways mechanisms regulate pulmonary surfactant synthesis processing secretion catabolism extensively characterised using classical biochemical analytical approaches constructed model largely experimental animals surfactant phospholipid metabolism alveolar epithelial cell whereby phospholipid synthesised endoplasmic reticulum selectively transported lamellar body storage vesicles subsequently processed secretion alveolus surfactant phospholipid complex mixture individual molecular species defined combination esterified fatty acid groups comprehensive description surfactant phospholipid metabolism requires consideration interactions molecular species however recently lipid analytical techniques kept pace considerable advances understanding enzymology molecular biology surfactant metabolism refinements electrospray ionisation mass spectrometry esi provide sensitive platforms rapid characterisation surfactant phospholipid composition molecular detail combination esi administration phospholipid substrates labelled stable isotopes extends analytical approach quantification synthesis turnover individual molecular species surfactant phospholipid methodology involve radioactivity ideally suited application clinical studies review provide overview metabolic processes regulate molecular specificity surfactant phosphatidylcholine together examples application stable isotope technologies vivo first time begun explore regulation molecular specificity surfactant synthesis human subjects elsevier gmbh rights reserved
major aim made tea identification identify variety provenance tea plant present experiment used tea plants camellia sinensis kuntze housed tea research extension substation internal transcribed spacer fragments trnl intron trnl trnf intergenic sequence region dna sequences successfully sequenced similarity nucleotide sequences tea plants housed tea research extension substation polymerase chain reaction amplified noncoding region varieties possessed identical sequences compared trnl intron trnl trnf intergenic sequence fragments chloroplast cpdna proportion nucleotide sequence variation large suitable establishing dna barcode database identify tea plant varieties establishing database imported teas domestic made teas used model system explore feasibility using sequences identify varieties provenances made teas phylogenetic tree constructed using sequences unweighted pair group method arithmetic mean indicated variety tea plant likely successfully categorized one cluster contamination tea plants also detected result provides molecular evidence similarity important tea varieties taiwan remains high wesuggest direct wide collection made tea original samples tea plants establish sequence molecular barcode identification database identify varieties provenances tea plants dna barcode comparison method satisfy need rapid low cost frontline differentiation large amount made teas taiwan abroad provide molecular evidence varieties provenances copyright food drug administration taiwan published elsevier taiwan llc
isononyl cyclohexane clicarboxylate dinch major substitute high molecular weight phthalates adversely affect reproductive function like phthalates broad exposure population expected postulated dinch monoester minch secondary oxidized metabolites minch minch oxo minch human metabolites possible biomarkers dinch exposure developed line hplc method determination human urine identification performed authentic standard substances quantification via isotope dilution analytical method highly selective sensitive limits quantification loq pilot study volunteers general german population oxidized dinch metabolites found samples minch abundant mean maximum followed minch oxo minch three oxidized metabolites correlated strongly among rho minch detected one sample regarded weak marker exposure analytical method able perform human metabolism studies provide metabolic conversion factors investigate extent dinch exposure general population elsevier rights reserved
ageing characterized decline systemic functions greater susceptibility apoptosis senescence may contribute proliferative functional impairment endothelial progenitor cells play important role neo angiogenesis endothelial repair vascular ageing associated changes structure functions vessels wall many possible causes damage sure inflammation oxidative stress play fundamental role pathogenesis endothelial dysfunction commonly attributed reduced availability nitric oxide inflammageing chronic low grade inflammation characterizes elderly people aggravates vascular pathology provokes atherosclerosis major cardiovascular disease nutraceutical molecular biology represent new insights field fact first could represent possible treatment prevention delay vascular ageing second could offer new possible targets potential therapeutic interventions review pay attention causes vascular ageing effects nutraceuticals elsevier ireland ltd rights reserved
trichinellosis cosmopolitan zoonotic disease produced mainly consumption poorly cooked swine meat several studies probed efficiency immunotherapy method treatment trichinellosis work kda immunodominant antigen characterized presence iga igm igg anti trichinella spiralis antibodies evaluated course infection addition differences sublingual parenteral administration kda spiralis antigen determined long evans rats used purify kda antigen evaluate immune response produced six different groups healthy infected controls two groups immunized murines sublingually parenterally four doses kda spiralis immunogen administered days challenged spiralis infective larvae days last immunization finally two groups murines infected spiralis immunized week post infection two routes humoral response evaluated indirect immunofluorescence confocal microscopyin order determine presence iga igm igg antibodies
background hpv modifies overall survival patients oropharyngeal cancer opscc hpv established risk factor opscc hpv infection may also reside larynx oral cavity evaluated hpv status head neck squamous cell carcinoma hnscc patients methods hpv infection confirmed amplification viral oncogenes pcr assay ihc hnscc samples associations hpv status clinicopathological parameters performed using fisher exact test survival analysis completed using kaplan meier estimator multivariate cox regression analysis results hpv positive patients longer compared hpv negative patients hpv positive tumors larynx lscc pharynx pscc showed improved compared hpv negative tumors also hpv positive patients exposed radiotherapy presented better survival conclusions hpv status positive prognostic value hnscc addition hpv status tnm staging provide better assessment prognosis guide treatment hnscc patients
objective design cisplatin based chemotherapy widely used perioperative period cancer surgery exacerbates risk renal injury study examined whether dexmedetomidine dex commonly used anesthetic adjuvant shows protective effect cisplatin induced acute kidney injury materials acute kidney injury mice induced cisplatin treatments mice administered dex atipamezole day days cisplatin treatment methods renal function tubular damage score evaluated following cisplatin administration apoptotic tubular cells detected tunel assay caspase bax macrophages cells kappa examined immunohistochemistry staining western blot tumor necrosis factor tnf alpha interleukin beta monocyte chemoattractant protein mcp kidney measured using real time polymerase chain reaction results dex treatment preserved renal function reduced tubular damage score mice cisplatin administration mice treated dex exhibited less apoptotic tubular cells response cisplatin insult associated decreased bax reduced activation caspase dex suppressed infiltration macrophages cells kidneys following cisplatin treatment involved inhibition kappa activation decreased expression tnf alpha beta mcp furthermore showed renoprotective effect conferred dex may related alpha adrenoceptor dependent pathway conclusion demonstrate dex protects kidney cisplatin induced aki regulation apoptosis inflammatory response
early light inducible protein gbelip isolated immature ginkgo leaves rapid amplification cdna ends method contains open reading frame encoding amino acid protein significant homology early light inducible proteins plant species genomic dna gbelip gene contains three exons two introns southern blotting revealed gbelip single copy gene ginkgo light defense stress responsive element found promoter region gbelip gbelip expressional patterns detected real time pcr various conditions elip expressions variable different time points day increasing significantly commencement light illumination dropping basal level gradually elip expression small size leaves width day age higher middle width day age large width day age size leaves revealed elip expression control developmental regulation temperature light intensity treatments gbelip transcripts accumulation may relate photoinhibition peak expression gbelip appeared later chilling heating meanwhile gbelip expression high light higher low light two temperatures gbelip expression also increased wounding methyl jasmonate meja treatment corresponded increasing malondialdehyde mda concentration conclusion gbelip appears induced imbalance chlorophyll formation degradation development abiotic stress results suggest gbelip may function response environmental signals possibly regulating responses abiotic stresses
engaging undergraduates research essential teaching think like scientists become desired component classroom laboratory instruction research projects span entire semester expose students variety concepts techniques allow students use experiments learn scientific principles understand specific techniques applicable critically analyze varied data examine experimentation leads acquiring knowledge provide experience features semester long research project integrated combined lecture laboratory course molecular biology project utilized zebrafish model examine gene expression embryonic development required students develop test hypotheses timing expression previously uncharacterized genes main goals project provide opportunities students develop critical thinking skills required conducting research support content goals course determine whether goals met student performance steps project related pre test post test questions examined international union biochemistry molecular biology
pyridoxal phosphate enzymes ubiquitous nitrogen metabolism organisms catalyze wide variety reactions including racemization transamination decarboxylation elimination retro aldol cleavage claisen condensation others substrates containing amino group commonly alpha amino acids wide variety reactions catalyzed plp enzymes enabled ability covalent aldimine intermediate formed substrate plp stabilize carbanionic intermediates alpha substrate review attempts summarize mechanisms reaction specificity achieved plp enzymes focusing three aspects reactions stereoelectronic effects protonation state external aldimine intermediate interaction carbanionic intermediate protein side chains present active site article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
background oxidative stress may involved neurodegenerative process alzheimer disease telomeres repeated sequences cap chromosome ends undergo shortening cell division sensitive serve markers cell replicative history telomere length shortening reported relate aging process aging associated diseases telomeric changes always identical especially change telomere length distribution subtelomeric methylation involvement associated telomere change pathogenesis discussed decades telomere length telomerase activity analyzed however telomeric factors telomere distribution subtelomeric methylation status yet analyzed objective subtelomeric methylation status well telomere length studied antioxidant vitamin terms methods measured urinary iso pgf alpha lipid peroxidation product marker methylated non methylated telomere lengths peripheral blood mononuclear cells southern blotting patients vitamin treatment results level urinary iso pgf alpha found increased middle ranged telomeres increased shortest telomeres decreased patients telomeres methylated long telomeres short telomeres compared control oral administration antioxidant vitamin day months patients partly reversed associated alterations marker levels conclusions patients showed elevated marker level vitamin lowered level comparison controls patients showed shorter telomere lengths cells short long telomeres bore relatively hypermethylated subtelomeres patients aging associated accumulation cells bearing short telomeres observed results imply long telomeres hypomethylation tend shorten faster cells bearing short telomeres hypomethylation tend easily enter senescent state elevated stress however significant effect altered telomeric profiles patients could detected month administration vitamin copyright karger basel
paper presents analysis implications recent studies performed characterize uranium products modern uranium recovery facilities important worker protection assumptions solubility related molecular species produced materials humans critical properly assess radiation dose intakes understand chemotoxic implications establish protective exposure standards airborne concentrations limits intake etc recent studies well information historical professional literature reviewed address issue solubility related characteristics data important design programs assessment chemical radiological aspects worker exposure products modern uranium recovery plants conventional uranium mills situ recovery plants isrs data suggest strongly oxide form produced facilities therefore product solubility related precipitation chemistry thermal exposure dryer temperature given peroxide precipitation low temperature drying methods used many modern uranium recovery facilities today soluble products produced dosimetric impacts products pulmonary system except perhaps case extreme acute insult would small residual pulmonary retention beyond month two would likely small measure traditional urinalysis sampling current state art natural uranium vivo lung counting techniques uranium recovery plants revisit adequacy current bioassay programs context process product specifics workers potentially exposed soluble yellowcake concentrates urine specimens submitted uranium analysis approximately weekly basis including analysis biomarkers associated potential renal injury glucose lactate dehydrogenase ldh protein albumen additionally implications compliance current nuclear regulatory commission nrc regulations cfr discussed nrc applicable agreement state agencies licensees need recognize importance uranium chemotoxicity versus dose relationship interest worker protection
escherichia coli errors newly replicated dna incorporation nucleotide mispaired base accidental insertion deletion nucleotides corrected methyl directed mismatch repair mmr pathway enzymology mmr long established many fundamental aspects mechanisms remain elusive structures compositions orientations complexes muts mutl muth initiate repair using atomic force microscopy first time record structures locations individual complexes muts mutl muth bound dna molecules initial stages mismatch repair technique reveals number striking unexpected structures growth disassembly large multimeric complexes mismatched sites complexes muts mutl anchoring latent muth onto hemi methylated gatc sites bound nicks dna complexes directly bridging mismatched hemi methylated gatc sites looping dna observations single molecule studies provide new opportunities resolve long standing controversies field underscore dynamic heterogeneity versatility mutslh complexes repair process elsevier rights reserved
trial comprising fifty lentil genotypes conducted three locations india year estimation grain concentrations analyze interactions employing additive main effect multiplication interaction model study revealed significant effects genotype environment genotype environment interaction grain concentration model genotypes ipca score nearly zero mean greater grand mean considered adaptable studied environments grain concentration genotypes ill globe mutant grain concentration genotypes found stable diversity analysis using genomic est ssr markers indicated studied genotypes diverse est ssrs revealed lower polymorphism compare genomic ssrs two major clusters identified similarity indigenous genotypes grouped cluster exotic accessions grouped cluster indicating role geographic origin diversity based multi location evaluation grain concentrations molecular characterization crosses proposed development grain rich varieties development mapping populations study genetics mapping qtls gene
biofouling pervasive challenge industrial medical settings enormous economic health impacts use quorum quenching phages potential solution either combating biofilm inhibiting biofilm formation engineered phage designed specific bacterial system event real life application synthetic phage necessary consider effect environmental conditions synthetic phage study focused stability phage lysate different types carbon sources competition engineered phage comparison wild type phage optimal results found plaque forming units pfus glucose carbon source kept stable almost days results suggested competition happens time polymerase chain reaction results pfu samples showed increase taiia indicates conditions favored phage replication engineered phage monoculture system stability competition combined mix phages showed trend similar taiia primarily days
background yarrowia lipolytica ascomycete yeast used biotechnological research abilities secrete high concentrations proteins accumulate lipids genetic tools made variety backgrounds varying similarity comprehensively sequenced strain results developed set genetic molecular tools order expand capabilities lipolytica biological research industrial bioengineering applications work generated set isogenic auxotrophic strains decreased non homologous end joining targeted dna incorporation genome sequencing assembly annotation genetic background uncovers previously unidentified genes lipolytica complement strains constructed plasmids lipolytica optimized superfolder gfp targeted overexpression fluorescent tagging used tools build yarrowia lipolytica cell atlas collection strains endogenous fluorescently tagged organelles genetic background order define organelle morphology live cells conclusions molecular isogenetic tools useful live assessment organelle specific protein expression localization lipid biosynthetic enzymes proteins lipolytica work provides yarrowia community tools cell biology metabolism research lipolytica development biofuels natural products
human noroviruses leading cause epidemic sporadic gastroenteritis worldwide infections either spread directly via person person route indirectly environmental surfaces food contaminated fomites inanimate surfaces important vehicles spread virus norovirus outbreaks developed evaluated protocol using macrofoam swabs detection typing human noroviruses hard surfaces compared fiber tipped swabs antistatic wipes macrofoam swabs allow virus recovery range toilet seat surfaces protocol includes steps extraction virus swabs concentration viral rna using spin columns total swab samples collected surfaces cruise ships long term care facilities norovirus gastroenteritis reported tested positive gii norovirus qpcr could successfully genotyped conclusion detection norovirus environmental surfaces using protocol developed may assist determining level environmental contamination outbreaks well detection virus clinical samples available may also facilitate monitoring effectiveness remediation strategies
aim endothelial lipase member lipoprotein lipase family regulates hdl metabolism known act bridging molecule monocytes lipoproteins vascular endothelial cells investigated role regulatory mechanisms expression macrophages methods macrophages originating wild type deficient mice stimulated lipopolysaccharide lps expression mrna evaluated northern blotting dii ldl used measure uptake native low density lipoprotein nldl results lps increased mrna levels increasing intracellular oxidative stress macrophages lps affect expression macrophages derived toll like receptor tlr gene mutant mice hej uptake nldl lps treatment significantly lower macrophages mice mice simvastatin suppressed lps induced upregulation expression uptake nldl conclusions expression upregulated lps via tlr promotes uptake nldl macrophages simvastatin inhibits lps induced regulation uptake macrophages thus findings provide novel role lipoprotein metabolism would expand range anti atherogenic effects statins
ask neuroscientist name profound discoveries field past years near top list phenomenon technique related genes expression indeed understanding genetics gene regulation ushered whole new systems knowledge new empirical approaches many could even imagined prior molecular biology boon recent decades neurochemistry classic sense intersects concepts manifestation neuropeptides obviously dependent upon central dogma established rules dna sequence eventually converted protein primary structure conformation also levels locales expression expanding considerations non peptide neurotransmitters illustrates gene regulatory events impact neurochemistry much broader sense extending beyond neurochemicals translate electrical signals chemical ones synapse also include every aspect neural development structure function pathology beginning mutability yet relative stability genes expression patterns recognized potential substrates intriguing phenomena neurobiology instances plasticity required learning memory near heretical speculation offered idea perhaps sequence genome altered encode memories fascinating component intervening progress includes evidence central dogma nearly rigid consistent thought mutability extends potential manipulate code experimental clinical purposes
chalcone synthase chs coded elm gene super family key enzyme flavonoid biosynthesis two independent promoters isolated chsa named pchsa pchsa genbank accession number respectively genomic dna petunia hybrida pchsa differs pchsa mainly pchsa fragment similar sequence similar characteristics typical intron promoter sequences contain conserved sequences tata box ccaat box cap site ccataa flower specific promoter sequences tacpyat box anther box tagaagtgacagaaat box cacgtg box element atgtcacgtgccatc box element tgtgttgaaggtttgcta petunia plant used promoter cloning diploid chromosomes southern blotting showed promoters multiple copies genome two promoters segregated offspring segregation meet ratio qrt pcr analysis showed significant difference chsa gene expression non treated treated floral organ plants one promoters expression chsa treated seedling leaves increased compared treated floral organ pchsa driven chsa expression treated seedling leaves significantly increased driven pchsa chsa gene expression non treated seedling leaves results show presence two independent promoters pchsa pchsa chsa petunia genome intron like sequence pchsa promoter could significantly increased chsa gene expression treated seedling leaves
social economic burden allergic rhinitis increasing significant effects quality life patients suffering therefore physicians require evidence based guidelines regarding diagnosis differential diagnosis proper management management patients korean academy asthma allergy clinical immunology developed new clinical guidelines appropriate management especially korean patients core questions questions practitioners curious several experts field allergology pediatrics otorhinolaryngology developed set practical guidelines based systematic review literature furthermore determined level evidence associated recommendations answer article suggest answers core questions medical treatment
objective root resorption complication orthodontic treatment till date dearth information regarding issue aim study determine whether expression transforming growth factor beta tgf beta inflammatory cytokine related orthodontic force moreover associated expression level may helpful differential diagnosis control ultimate treatment disease materials methods experimental study total eight week old male wistar rats selected randomly day orthodontic appliance consisted closed coil spring ligated upper right first molar incisor upper left first molar animals placed orthodontic force thus serving control group day anesthesia animals sacrificed rats divided two equal groups first group subjected histological evaluation second group reverse transcriptase polymerase chain reaction pcr orthodontic tooth movement measured groups determine influence applied force results statistical analysis data showed significant root resorption experimental group control group however significant difference expression level inflammatory cytokine tgf beta conclusion based findings study suggest direct relationship orthodontic force orthodontic induced inflammatory root resorption addition relationship likely exist root resorption tgf beta expression resorptive lacunae
cyclooxygenase cox rate limiting enzyme prostaglandin biosynthesis plays key role inflammation tumorigenesis development circulatory homeostasis cox expression rapidly sensitively regulated various stimuli also regulation distinct among cell types transcriptional posttranscriptional levels therefore important consider features cox expression reporter assays describe chapter emphasis made regard two points firstly cox reporter assays evaluated intrinsic cox expression pcr northern blotting western blotting pge measurement secondly one must carefully choose several conditions reporter assays experimental purposes
mucosal immunity intestinal level constantly challenged presence external food microbial antigens must kept strict control avoid rise aberrant inflammation among cells innate immunity macrophages expressing chemokine receptor cxcr strategically located near gut epithelial barrier cells contribute maintenance homeostasis producing anti inflammatory cytokine however role control full blown inflammation tissue injury controversial study investigated mice proficient deficient expression cxcr receptor model dextran sulphate sodium dss induced acute colitis found mice cxcr gfp gfp severe disease compared mice cxcr gfp terms histological examination colonic tissues leukocyte infiltration expansion macrophages lymphocytes expression several inflammatory mediators beta ifn gamma inos also significantly upregulated mice despite higher production overall study demonstrates macrophages expressing functional cxcr receptor important non redundant role controlling abnormal intestinal inflammation may lead tissue damage elsevier gmbh rights reserved
full length cdna named leein cloned tomato lycopersicon esculentum pcr race genomic dna sequence ein isolated long accurate pcr inverse pcr dna sequence including six introns ein cdna contained open reading frame encoding kda protein amino acids comparison protein sequence arabidopsis petunia showed amino acid homology respectively northern blotting analysis indicated expression level leein young leaves higher mature leaves senescent leaves development fruits expression ein detected mature green stage got maximum mature green breaker stages reduced rapidly breaker stage expression level leein wild type tomato fruit mature green stage distinctively change treated exogenous ethylene
metabolism variety anabolic steroids frequently misused doping purposes investigated last years research mainly focused main long term metabolites suitable detection detailed clearance mechanisms rarely elucidated recent studies metandienone focused identification beta hydroxymethyl alpha methyl norandrosta trien one beta normd long term metabolite however metabolic pathway generation remained unclear metandienone wagner meerwein rearrangement product dimethyl norandrosta trien one normd hydroxylated different human cytochrome enzymes cyps hydroxylation products chemically synthesized characterized mass spectrometry allow trace detection urine samples following oral administration metandienone normd one human volunteer post administration urines checked presence hydroxylated metabolites using analysis human mitochondrial steroid hydroxylating enzymes cypb cypb capable metabolize metandienone leading formation beta hydroxymetandienone hydroxymetandienone following wagner meerwein rearrangement resulting products could assigned beta normd beta normd contribution cypb cypb human metabolism metandienone confirmed analysis post administration samples metandienone normd combined results previous study enzymatic pathways identified involve cyp cypa hydroxylation normd cyp cypa cypb take part beta normd generation current study represents valuable contribution elucidation clearance mechanisms anabolic steroids also indicates mainly non liver cyps seem involved processes elsevier ireland ltd rights reserved
apetala plays critical roles establishing meristem organ identity plant floral development study obtained ceap like gene using mrna differential display technique analyze wild type multitepal mutant orchid cymbidium ensifolium full length cdna encoding ceap like transcription factor shows significant similarity cdna erycina pusilla contains nucleotides complementary mir using transient gene expression system arabidopsis protoplasts found accumulation ceap like protein transcripts negatively regulated mir indicating gene putative target mir northern blotting revealed ceap like dominantly expressed sepals petals wild type flower shows low expression gynostemium contrast accumulation ceap like transcripts decreased significantly especially central part mutant flower corresponding abnormal petals absence gynostemium furthermore found antagonistic expression pattern ceap like agamous wild type representing class genes specify floral organ fate however antagonistic distribution modified multitepal mutant genes showed lower expression wild type result suggested balance ceap like agamous activity important regulation floral patterning ensifolium study represents first report class gene regulatory role floral development orchid ensifolium
early metastasis poor five year survival make lung cancer leading cause cancer related deaths worldwide clinical profile lung cancer patients india differs west present earlier squamous cell carcinoma commonest histological type compared gene expression profiles primary lung squamous cell carcinoma lscc matched normal lung tissues asian indians using suppression subtractive hybridization two subtracted cdna libraries containing differentially expressed genes tumors constructed differential expression confirmed reverse northern blot analysis dna confirmed clones sequenced subjected genbank blast searches rna expression levels analyzed northern blotting validated semiquantitative pcr cases nsclc seventeen differentially expressed gene cdna fragments lscc analyzed differentially expressed genes included associated cellular metabolism cell cycle structure adhesion transcription proliferation apoptosis signal transduction study provided first evidence klaa death inducing protein novel independent target geminin inhibitor dna replication differentially expressed lscc identification differentially expressed genes lung cancer study may serve better molecular markers early diagnosis identifying novel intervention sites anticancer therapy elsevier inc rights reserved
mediated alternative pathway plays important role protecting wheat seedlings drought stress dissipating excessive reducing equivalents generated photosynthesis alternative pathway proven involved responses various stresses however mechanisms defense response drought stress still lacking aims work investigate role drought tolerance induced drought stress using two wheat cultivars different drought tolerance results showed longchun cultivar tolerant drought cultivar seedlings exposed drought led significant increase increased longchun furthermore chlorophyll fluorescence parameters broken vertical bar psii decreased significantly drought treated seedlings especially indicating photoinhibition occurred drought stress pretreatment sham malate oxaloacetate shuttle activity photosynthetic efficiency inhibited drought treated seedlings resulting serious oxidative damage indicated higher levels malondialdehyde hydrogen peroxide moreover modulated drought stress increasing aoxa expression pyruvate content taken together results indicate mediated involved optimizing photosynthesis drought stress avoiding reduction photosynthetic electron transport chain thus reducing reactive oxygen species production oxidative damage wheat leaves
prompted recent sustainability trends institutions municipalities begun quantifying local impact nitrogen cycle better understand budget auburn university measured inputs outputs four subsystems near surface atmosphere human metabolism animal metabolism landscape utilizing methods established savanick university minnesota twin cities total input total output made balance subsystem inputs outputs near surface atmosphere input output human metabolism input output animal metabolism input output landscape input output compared results balances university virginia uva leach found larger campus area associated higher commuter emissions colder average temperatures associated campus energy emissions presence agriculture veterinary schools associated larger animal metabolism flux campuses greater urban density crop presence tended greater landscape flux found overall flux campus similar normalized per capita cap study provides insight towards reaching sustainability goals institutions inform decisions regarding pollution reduction plans
known functions type thioesterases teiis type polyketide synthases pkss include selecting starter acyl units removal aberrant extender acyl units releasing final products dehydration polyketide intermediates study characterized two teiis scni pksiateii streptomyces chattanoogensis deletion scni chattanoogensis decreased natamycin production scni pksiateii could remove acyl units acyl carrier proteins acps involved natamycin biosynthesis results show teii could play important roles initiation step elongation steps polyketide biosynthesis intracellular teiis involved different biosynthetic pathways could complement federation european biochemical societies published elsevier rights reserved
calreticulin crt multifaceted protein initially discovered endoplasmic reticulum chaperone protein essential calcium metabolism various implications cancer early development immunology discovered recently crt well role dominant eat prophagocytic signal intriguingly cell surface exposure secretion crt among infective strategies used parasites trypanosoma cruzi entamoeba histolytica taenia solium leishmania donovani schistosoma mansoni inherent flexibility crts analysis ray crystallography requires design recombinant constructs suitable crystallization thus structures two similar mammalian crt lectin domains known ray structures two distant parasite crts insights species structural determinants might harnessed fight parasites without affecting functions host crt provided moreover although hypothesis crt exhibit open closed conformations proposed relation chaperone function open conformation far observed crystal structures first evidence provided complex conformational transition junction reoriented towards domain closure saxs experiments also provided additional information flexibility cruzi crt solution thus complementing crystallographic data open conformation finally regarding conserved lectin domain structure chaperone function evidence provided dual carbohydrate protein specificity new scheme proposed interpret unusual substrate binding properties fascinating features fully consistent previous experimental observations discussed considering broad spectrum crt sequence conservations differences
background objectives calprotectin heterodimer antimicrobial properties expressed gingival keratinocytes plays important role innate immunity calprotectin expression localized spinous cell layer gingival epithelium hypothesized expression calprotectin keratinocytes related differentiation stage aim present study investigate relationship calprotectin expression keratinocyte differentiation using factors regulated differentiation material methods normal human gingival keratinocytes isolated gingival tissues obtained extraction wisdom teeth cultured serum free keratinocyte medium supplemented interleukin alpha calcium promote keratinocyte differentiation transforming frowth factor beta tgf beta retinoic acid suppress differentiation expression mrna production calprotectin normal human gingival keratinocytes examined northern blotting enzyme linked immunosorbent assay respectively expression cytokeratin involucrin filaggrin marker proteins keratinocyte differentiation investigated immunohistochemical staining dna binding activity ccaat enhancer binding protein alpha ebp alpha transcription factor examined electrophoretic mobility shift assay results expression mrna production calprotectin increased interleukin alpha calcium decreased tgf beta inhibited expression keratinocyte differentiation induced interleukin alpha ebp alpha dna binding activity normal human gingival keratinocytes enhanced interleukin alpha calcium suppressed tgf beta conclusion present study suggests calprotectin expression related keratinocyte differentiation ebp alpha regulator calprotectin expression keratinocytes
proven photocatalyst nano anatase capable undergoing electron transfer reactions light previous studies proven nano anatase improved photosynthesis greatly promoted spinach growth however molecular mechanisms carbon reaction promoted nano anatase still clearly understood present paper reverse transcription polymerase chain reaction northern blotting carried results showed expression ribulose bisphosphate carboxylase oxygenase rubisco small subunit rbcs rubisco large subunit rbcl messenger rna mrna nano anatase treated spinach obviously promoted respectively effects bulk tio significant accordingly protein expression rubisco nano anatase treated spinach increased compared control analysis indicated activity rubisco nano anatase treated spinach significantly higher control times bulk tio treatment significant effects together one molecular mechanisms carbon reaction promoted nano anatase nano anatase treatment results enhancement rubisco mrna amounts protein levels activity rubisco thereby leading improvement rubisco carboxylation high rate photosynthetic carbon reaction
plants ideal systems teach core biology concepts due unique physiological developmental features advances dna sequencing technology genomics allowed scientists generate genome sequences transcriptomics data numerous model plant species information publicly available presents valuable tool introduce undergraduate students fundamental concepts gene expression context modern quantitative biology bioinformatics modern biology classrooms must provide authentic research experiences allow developing core competencies scientific inquiry critical interpretation experimental results quantitative analyses large dataset using computational approaches recent educational research shown undergraduate students struggle connecting gene expression concepts classic genetics phenotypic analyses overall flow biological information living organisms suggesting novel approaches necessary enhance learning gene expression regulation review describes different strategies resources available instructors willing incorporate authentic research experiences genomic tools bioinformatics analyses teaching transcriptional regulation gene expression undergraduate courses variety laboratory exercises pedagogy materials developed teach gene expression using plants discussed article part special issue entitled plant gene regulatory mechanisms networks edited erich grotewold nathan springer elsevier rights reserved
stool specimens collected children acute gastroenteritis sukhothai phetchaboon provinces thailand positive rotavirus rva polyacrylamide gel electrophoresis page types rva positive specimens determined semi nested pcr prevalent followed unusual human rvas hurvas detected high frequency interestingly hurvas hurvas showed short rna pattern page thus shown properties hurvas markedly unusual recent years thailand wiley periodicals inc
cancer complex disease pathology properly understood terms independent players genes proteins molecular pathways simple combinations similar many body physics condensed phase many important properties determined single atom molecule rapidly accumulating large omics data also require new mechanistic global underpinning organize rationalizing cancer complexity unifying quantitative theory proposed present authors cancer robust state formed endogenous molecular cellular network evolutionarily built developmental processes physiological functions cancer state optimized whole organism discovery crucial players cancer together developmental physiological roles turn suggests existence hierarchical structure within molecular biology systems structure enables decision network constructed experimental knowledge examining nonlinear stochastic dynamics network robust states corresponding normal physiological abnormal pathological phenotypes including cancer emerge naturally nonlinear dynamical model network leads encompassing understanding prevailing linear additive thinking cancer research far theory applied prostate hepatocellular gastric cancers acute promyelocytic leukemia initial success may offer example carrying physics inquiring spirit beyond traditional domain quantitative approaches address individual cases however must general rules laws discovered biology medicine
quantifying spatial genetic structure key inform forest management restoration strategies reliable evaluations genetic structure require sound sampling schemes inappropriate sampling may estimate spatial patterns genetic structure sampling bias investigated computer simulations mostly animal species continuous distributions tree species different life history traits results studies may apply used spatially explicit landscape genetic simulations assess effects spatial sampling scheme random systematic cluster sampling intensity number microsatellite loci inferences genetic structure isolation distance ibd two forest tree species varying dispersal distances patchy distributions results showed random sampling loci best performing sampling scheme irrespective sampling intensity strength ibd contrast cluster systematic sampling sensitive sample size three sampling schemes number loci large effect loci increasing chance underestimating ibd increasing number samples number loci improve performance sampling schemes hence researchers put effort increasing number loci increasing sample size results also showed sampling error rates varied species sampling bias appeared stronger species aggregated spatial distribution
extra virgin olive oil primary source oil mediterranean diet differs significantly composition dietary lipids consumed populations several minor constituents virgin olive oil include vitamins alpha gamma tocopherols around ppm beta carotene phytosterols pigments terpenic acids flavonoids squalene number phenolic compounds hydroxytyrosol usually grouped rubric polyphenols antioxidant enzyme modulating activities extra virgin olive oil phenolics ability inhibit kappa activation human monocyte macrophages demonstrated vitro also solid evidence extra virgin olive oil phenolic compounds absorbed human metabolism elucidated several activities might associated cardiovascular protection inhibition platelet aggregation reduction plasma rhcy demonstrated vivo biologically relevant properties olive phenolics described although investigations controlled clinical trials needed support hypothesis virgin olive oil consumption may contribute lower cardiovascular mortality
gene ble streptoalloteichus hindustanus widely used selective antibiotic marker control phleomycin resistance significantly increase tolerance hosts zeocin unicellular marine microalga nannochloropsis oculata extremely sensitive zeocin selected ble selective marker genetic transformation oculata algal cells density cells digested hemicellulase driselase protoplasts accounted total ble placed downstream promoter hspa rubs isolated chlamydomonas reinhardtii yielding recombinant expression construct pms construct transferred protoplasts electroporation transformed protoplasts cultured fresh liquid medium selected solid medium supplemented zeocin pcr result proved ble existed transformants three transformants cultured least generations without losing ble southern blotting analysis showed ble integrated genome oculata ble serve new dominant selective marker genetic engineering oculata
cell cytotoxicity widely used measure determine effect outside intervention cell function however accuracy reproducibility assay considered unstable either user errors sensitivity cells experimental manipulation eliminate issues workflow reduces minimum established presented illustrate obtained blood samples various time points runners submitted intense bout exercise first cells simultaneously identified isolated tagging magnetic based sorting directly whole blood little one milliliter sorted cells removed reagent capping antibodies counted order establish accurate cell count per milliliter blood secondly sorted cells effectors cells mixed diotadecyloxacarbocyanine perchlorate dio tagged cells target cells assay optimal ratio analyzed using imaging flow cytometer allows visualization event elimination false positive false negatives doublets effector cells workflow completed allows stable results even working human samples available research teams test several experimental interventions human subjects compare measurements across several time points without compromising data integrity
novel gene named ngaoxa isolated nicotiana glutinosa pcr reverse transcription pcr full length cdna ngaoxa including orf open reading frame utr untranslated region utr orf encodes amino acid protein contains two conserved cysteine residues four iron binding motifs five alpha helix regions six conserved histidine residues phylogenetic tree showed ngaoxa belongs aqx alternative oxidase type group alignment analysis showed ngaoxa shares high similarity known aoxs four exons three introns detected genomic dna sequence southern blotting analysis suggested ngaoxa single copy gene series putative cis acting elements examined flanking region ngaoxa northern blotting analysis showed transcript levels ngaoxa markedly accumulated tobacco seedlings treated various abiotic stimuli exogenous signalling molecules plant defence response salicylic acid exogenous tca tricarboxylic acid cycle metabolite citrate however could suppressed abiotic stress cocl inhibitor ethylene indicates expression ngaoxa may regulated ethylene addition ngaoxa also strongly induced three viral pathogens tobacco mosaic virus potato virus potato virus results indicate ngaoxa may involved multi signal transduction pathways may play important role defence response
pleiotropic drug resistance gene pdr encodes multidrug membrane transporter plays important role efflux broad range chemicals yeast cells study possible function pdr insect cells two stably pdr transformed lepidopteran insect cell lines developed transcripts pdr detected two lines using northern blotting pcr analysis cells treated protein synthesis inhibitor diacetoxyscirpenol transformed cell lines showed increased tolerance chemical however unlike yeast cells ecdysone agonist could excluded pdr probably low expression levels imperfect incorporation recombinant protein transformed cell lines
rflp restriction fragment length polymorphism commonly used technique used genotyping nearly organisms including plants animals humans rflp widely used genetic genomic research genome mapping gene identification technique involves dna digestion gel electrophoresis capillary transfer dna southern hybridization chapter aim give detailed introduction perform rflps identifying genotypes
twenty one populations individuals covering entire native range pinus mugo turra dwarf mountain pine investigated genetic variation scored nuclear microsatellite markers nssrs main objective present study determine genetic structure across present distribution species locate populations different genetic compositions genetic variation observed within populations assignment populations based bayesian clustering methods revealed sudeten populations mugo form separate genetic cluster stands likely established founder effects alpine migrants distribution level ssr polymorphisms along evidence isolation distance phylogeographic structure indicate present populations mugo diverged relatively recently originate larger glacial distribution species one peripheral stand italy lowest values calculated genetic variation indices stand could therefore susceptible genetic drift negative impact predicted environmental changes discuss findings respect previously published results genetic morphological variation mugo consideration conservation genetics species
report identification characterization required cell differentiation homolog rqcd potential therapeutic target breast cancer gene expression profiling analysis breast cancer cells semi quantitative pcr northern blotting western blotting confirmed rqcd frequently regulated breast cancer specimens breast cancer cell lines hand expression weak hardly detectable normal human tissues except testis indicating molecule novel cancer testis antigen treatment breast cancer cell lines sirna targeting rqcd drastically suppressed cell proliferation concordantly introduction exogenous rqcd hek cells significantly enhanced cell growth implying rqcd oncogenic activity immunoprecipitation experiments immunocytochemical staining revealed interaction rqcd protein grb interacting gyf protein gigyf gigyf proteins involved regulation akt activation breast cancer cells interestingly knockdown either rqcd gigyf gigyf resulted significant reduction phosphorylation akt ser breast cancer cell lines findings suggest rqcd potential molecular target treatment breast cancer
aim study evaluate effect variation mir prostate cancer cells differentiation invasive function examine function mir plasma blood based mirna biomarker candidate cap expression mirnas lncap lncap prostate cancer cell lines detected northern blotting lncap lncap cells cultured androgen depleted medium transfected different synthetic mirs ability invasiveness evaluated matrigel invasion assay cell growth assessed using cck cell proliferation assay different times expression nse dvl neuroendocrine phenotype migration measured qrt pcr western blot level mir prostate cancer samples measured qrt pcr mir significantly increased compared aipc adpc cell lines overexpression mir lncap cells significantly increased level nse expression induced differentiation knocking level mir expression antagonist mir lncap cell line increased migration invasion dvl protein level regulated transfection anti mir mir regulated cap plasma demonstrate significant difference mir expression adpc aipc mir may contribute differentiation may cause aipc also suggest mir may control migration aipc cells dvl working key regulator advanced cap role mir target mrna needs investigated
order assess last sea level rise affected aegean archipelago quantified magnitude rate geographic change aegean islands last sea level rise episode kyr present spatially explicit geophysical model island specific area distance change adc typology constructed higher adc values representing higher degree change highest fragmentation rates aegean archipelago occurred tandem largest rates sea level rise occurring kyr kyr ago sea level rise resulted area loss aegean archipelago approximately spatiotemporal differences sea level changes across aegean sea irregular bathymetry produced variety island surface area loss responses area losses ranging per island addition sea level rise led increased island isolation increasing distances islands continents islands discuss rates area contractions distance increases may affected biotas evolutionary history genetics five testable hypotheses proposed guide future research hypothesize islands higher adc values exhibit higher degrees community hyper saturation local extinctions larger genetic bottlenecks higher genetic diversity within species pools endemics shared species continental fragments higher values power law species area relationship developed typology quantified geographic response sea level rise continental islands aegean sea present ideal research framework test biogeographic evolutionary hypotheses assessing role rates area distance change affecting biota elsevier rights reserved
telomeres sequences form ends eukaryotic chromosomes essential structures confer genome stability guide chromosome behavior addition terminal regions chromosomes tend house genes predicted roles ecological adaptation unfortunately however fungal genome assemblies contain telomeres therefore identities genes residing near chromosome ends often unknown effort develop complete understanding organization gene content chromosome ends number fungi developed efficient methods identification targeted cloning telomeres chapter describes basic steps shows exemplary results targeted cloning epichloe festucae telomeres
absence robust infectable cell culture system assays related replication clinical hbv isolates based transfection replication competent hbv dna hepatoma cell lines able replicate secrete hbv virions current methods constructing hbv genomes work well drug susceptibility assays suitable research hbv replication capacity regulation since heterogeneous promoter required drive pgrna transcription new strategy constructing hbv genomes contain hbv intrinsic promoter necessary pgrna transcription reported paper using strategy three hbv genomes isolates three patients constructed three hbv genomes transfected hepg cell line replicative intermediates detectable southern blotting digoxigenin labeled dna probe two three constructs using overlap extension pcr avoiding much possible digestion ligation process strategy could applied constructing longer genome units genotypes hbv strains elsevier rights reserved
cultivated tobacco nicotiana tabacum classic amphidiploid hybrids cultivated species closely related diploid nicotiana relatives often exhibit heterotic effects growth rate yield crosses tabacum synthetic tobaccos nicotiana sylvestris nicotiana otophora sylvestris nicotiana tomentosiformis may provide superior routes genome wide introgression diploid relatives allow increased potential capitalize heterotic effects tobacco significant levels mid parent heterosis observed yield growth rate hybrids synthetic tobaccos standard tobacco cultivar microsatellitemarker genotyping population derived sylvestris otophora cross carried preliminarily investigate relative importance different types gene action observed heterosis original interspecific cross results suggested role partial dominance overdominance marker genotyping also indicated overall reduced level recombination tabacum synthetic tobacco cross relative tabacum tabacum cross evidence genomic regions severely restricted levels recombination results suggest populations derived tabacum synthetic tobacco crosses may efficient introgressing germplasm diploid relatives compared populations derived crosses tabacum diploid forms preferential pairing tabacum homologues reduce potential introgression alien chromatin materials may useful sources favorable alleles influencing quantitative characters tobacco
predictive framework evolution stem cell biology currently lacking study propose deep image informatics nuclear biology stem cells elucidate biomaterials steer stem cell lineage phenotypes approach based high content imaging informatics capture minute variations spatial organization splicing factor nucleoplasm marker classify emergent cell phenotypes human mesenchymal stem cells hmscs cells cultured varied culture systems including hydrogels electrospun mats salt leached scaffolds approach encompasses high resolution imaging domains high content image analysis hcia compute quantitative nuclear metrics organization single cells concert machine learning approaches construct predictive cell state classification model findings indicate hmscs cultured collagen hydrogels induced differentiate osteogenic adipogenic lineages could classified three lineages stem adipogenic osteogenic precision sensitivity within using framework augmentation osteogenesis scaffold design exerted porogen leached scaffolds also profiled within similar high sensitivity furthermore employing organizational metrics differential osteogenesis induced novel electrospun fibrous polymer mats incorporating decellularized matrix could also elucidated predictably modeled days high precision demonstrate organizational metrics applied model stem cell state scaffolds propose methodology robustly discern minute changes stem cell states within complex architectures map single cell biological readouts critical assessing population level cell heterogeneity statement significance sustained development validation bioactive materials relies technologies sensitively discern cell response dynamics biomaterials capturing cell cell heterogeneity preserving cellular native phenotypes study illustrate application novel high content image informatics platform classify emergent human mesenchymal stem cell hmsc phenotypes diverse range biomaterial scaffolds high sensitivity precision track cell responses varied external stimuli major silico innovation proposed image profiling technology based unique three dimensional textural signatures mechanoreporter protein within nuclei stem cells cultured scaffolds technology accelerate pace high fidelity biomaterial screening acta materialia inc published elsevier ltd rights reserved
transgenic animals potential applications medicine life sciences biopharmacy study developed convenient economic efficient method gene transfer transfection male spermatogonial stem cells three fragments thanatin gene encoding antibacterial peptide synthesized amplified overlap extension polymerase chain reaction pcr inserted vector pires egfp pires egfp thanatin plasmid mixed liposomes injected testes male mice minimally invasive operation six weeks injection male mice mated normal female mice produce generation pcr southern blotting performed analyze mice among mice produced found positive thanatin gene pcr southern blotting six positive mice selected generation mated normal females generation found positive thanatin gene expression green fluorescence protein transgenic mice confirmed fluorescence imaging results showed thanatin gene integrated mouse genome study provides useful method future development disease resistant animals production antibacterial peptides transgenic animals elsevier inc rights reserved
background norovirus infection reported cause severe chronic diarrhea transplant recipients entity remains recognized clinical practice leading diagnostic delays transplant clinicians become familiar syndrome order facilitate early detection management methods demographic clinical outcomes variables summarized series transplant recipients positive stool reverse transcription polymerase chain reaction pcr assays johns hopkins factors associated longer duration symptoms compared using random forest analysis results thirty one transplant recipients tested positive stool pcrs symptoms included diarrhea nausea vomiting abdominal pain wasting acute kidney injury occurred persisted months median duration diarrheal symptoms months range patients relapses improvement wasting incompatible kidney transplant status plasmapheresis associated longer diarrhea durations treatments included nitazoxanide reduction immunosuppression intravenous immunoglobulin six patients died deaths attributed conclusions important clinicians recognize cause severe chronic diarrhea transplant recipients series receipt human leukocyte antigen blood type incompatible kidney transplant plasmapheresis associated longer symptom duration
reductionist approach dissecting biological systems constituents successful first stage molecular biology elucidate chemical basis several biological processes knowledge helped biologists understand complexity biological systems evidencing biological functions arise individual molecules thus realizing emergent properties biological systems explained predicted investigating individual molecules without taking consideration relations thanks improvement current omics technologies increasing understanding molecular relationships even studies evaluating biological systems approaches based graph theory genomic proteomic data often combined protein protein interaction ppi networks whose structure routinely analyzed algorithms tools characterize hubs bottlenecks topological functional disease modules hand expression networks represent complementary procedure give opportunity evaluate system level including organisms lack information ppis based premises introduce reader ppi expression networks including aspects reconstruction analysis particular new idea evaluate large scale proteomic data means expression networks discussed presenting examples application use infer biological knowledge shown special attention devoted topological module analysis
incretins glucose dependent insulinotropic polypeptide gip glucagon like peptide glp intestinal hormones released response ingestion nutrients especially carbohydrate number important biological effects include release insulin inhibition glucagon somatostatin maintenance beta cell mass delay gastric emptying inhibition feeding properties allow potentially suitable agents treatment type diabetes incretin receptors also present parts body including brain effects beginning understood relevance disorders nutrition ageing explored currently pandemic obesity diabetes existing treatments largely inadequate regard efficacy well ability tackle important factors pathogenesis increasing evidence current treatments address issue progressive cell failure obesity engine driving epidemic diabetes disappointing treatments succeed lowering plasma glucose also associated weight gain well established intensively treated better outcome standard treatment consequently achieving better control diabetes lower hbac goal optimal treatment despite use usual therapeutic agents often high doses combinations metformin sulphonylurea alpha glycosidase inhibitors thiazolidinediones number animal human insulin preparations optimal control glycaemia achieved use incretins therapeutic agents offers new approach treatment incretin metabolism abnormal evidenced decreased incretin effect reduction nutrient mediated secretion gip glp resistance gip glp hand administered intravenously able increase insulin secretion improve glucose homeostasis glp short half life due rapid degradation enzyme dipeptidyl peptidase dppiv analogues gip glp resistant action dppiv developed clinical trials shown effectiveness another novel agent naturally resistant dppiv given subcutaneous injection synthetic peptide called exenatide recently approved treatment usa efforts underway develop agents given orally include dppiv inhibitor licensed treatment usa several agents undergoing clinical trials strategies augment biological actions gip glp expected minimise weight gain reduce hypoglycaemic episodes prevent progressive beta cell failure increasing cell mass optimal agent may mimic replace endogenous incretin effect fully known awaits outcome clinical trials still ongoing potential therapeutic role non diabetic states including obesity neurodegenerative disease intriguing depends upon results ongoing research
ecent advances deep brain stimulators brain machine interfaces greatly expanded possibilities neuroprosthetics neuromodulation together advances neuroengineering nanotechnology molecular biology material sciences possible address fundamental questions neuroscience new powerful ways possible apply new technologies ways range augmenting restoring function neuromodulation modalities treat neuropsychiatric disorders recent developments neuromodulation methods offer significant advantages potential clinical benefits variety disorders describe current state art neuromodulation methods advances brain machine interfaces describing advantages limitations clinical applications method future applications new methods shape future psychiatry medicine along safety ethical implications also discussed elsevier inc rights reserved
alzheimer disease patients display neuropathological lesions including accumulation amyloid beta beta peptide neurofibrillary tangles although mechanisms causing neurodegenerative process largely unknown increasing evidence highlights critical role immunity pathogenesis alzheimer disease present study investigated role regulatory cells tregs alzheimer disease progression first explored effect tregs cells teffs cells adoptive transfer model systemic transplantation purified tregs xtg mice improved cognitive function reduced deposition beta plaques contrast adoptive transfer teffs diminished behavioral function cytokine production next transiently depleted treg population using anti antibody depletion tregs four months resulted marked aggravation spatial learning deficits six month old xtg mice additionally resulted decreasing glucose metabolism assessed positron emission tomography pet fluoro deoxy glucose fdg neuroimaging importantly deposition beta plaques microglia macrophage increased hippocampal regions treg depleted xtg compared vehicle treated xtg group finding suggested systemic treg administration ameliorates disease progression could effective alzheimer disease treatment
since european union enforced ban antibiotic growth promoters research focused natural feed additives would proven positive impact production animal health inulin commonly used effective probiotic additive mechanism inulin interactions avian body complex multidirectional fully understood despite number unresolved issues many authors demonstrated positive impact inulin host organism dietary supplementation poultry feeding inulin contributes modulation intestinal microbiota favouring quick proliferation beneficial bifidobacterium lactobacillus strains inhibiting growth pathogenic microbes indications inulin provoked changes host gut microbiota poultry may alter structure histomorphology intestinal mucosa improve absorption capacity poultry also demonstrated inulin may affect immune system systemic metabolism minerals lipids reports inulin effects body performance poultry often contradictory effectiveness prebiotic strongly dependent type dose used duration administration
recent findings shown amniotic fluid could putative new source multipotent stem cells investigated whether human could efficiently differentiate myogenic lineage vitro integrate vivo skeletal muscle severe combined immunodeficiency scid mice kit immunomagnetic sorted kit characterized immunocytochemistry southern blotting myogenic markers desmin myod vitro kit phenotypic conversion myogenic cells assayed myogenic specific induction media kit without vivo manipulation transplanted tibialis anterior scid mice acquisition myogenic like phenotype desmin myod kit observed culture myogenic specific induction media vivo transplanted kit showed engraftment skeletal muscle scid mice unexpected tubular glandular tissue like differentiation importantly immuno rejection inflammatory response tumorigenicity cells found within experimental conditions kit able differentiate myogenic cells vitro vivo transplantation skeletal muscle scid mice kit survived differentiated tubular gland like cells transplantation vivo engagement myogenic pathway prior transplantation could favor differentiation myogenic cells vivo
dna methylation retrotransposons imprinted genes accurately regulated spermatogenesis particular cpg methylation long interspersed elements line intracisternal particle iap retrotransposons spermatogenesis well characterized cpg methylation regulatory regions retrotransposons acquired embryonic testis development however reductions dna methylation linel iap rasgrfl imprinted gene observed deficient mice pirna biogenesis concerning describe two methods bisulfite sequencing southern blotting using methylation sensitive restriction enzyme analysis dna methylation line iap imprinted genes mouse testes
current study determined ability ntr antagonistic cyclic peptide rescue cells beta amyloid beta induced death ntr trka nih cells foetal rat cortical neurones incubated ngf beta increasing concentrations cyclic peptide catdikgaec peptide ability displace ngf beta binding determined duplicate cultures preincubated catdikgaec diluent stimulated beta peptide ability displace beta binding interfere beta induced signalling rescue cells beta mediated toxicity determined immunoprecipitation autoradiography northern blotting jnk activation mtt trypan blue assays peptide inhibited ngf beta binding ntr trka beta induced jun transcription diluent treated ntr cells cells preincubated cyclic peptide also peptide reduced beta induced phsophorylation jnk protected neurones beta induced toxicity determined trypan blue exclusion assay trypan blue positive cells diluent pretreated cultures cyclic peptide pretreated cultures mtt assay units diluent pretreated cells units cyclic peptide pretreated cells visualization representative microscopic fields data suggest cyclic peptide homologous amino acids ngf known mediate binding ntr interfere beta signalling rescue neurones beta induced toxicity
background gene polymorphisms associated sensitivity platinum drugs study aimed investigate polymorphisms gstp locus abcc locus sensitivity patients advanced non small cell lung cancer nsclc platinum drugs xinjiang uygur population material methods gene polymorphisms gstp abcc uygur nsclc patients assessed polymerase chain reaction restriction fragment length polymorphism pcr rflp relationship prognosis advanced nsclc uygur patients gene polymorphisms gstp abcc analyzed using progression free survival pfs overall survival major outcome indicators results median pfs patients advanced nsclc months uygur patients advanced nsclc months kaplan meier survival analysis indicated survival time patients gstp significantly longer patients gene survival time patients abcc significantly longer patients gene conclusions polymorphisms gstp abcc used predict outcomes uygur patients advanced nsclc received platinum based chemotherapy additionally information could used guide individualized treatment uygur patients advanced nsclc
pacific white shrimp litopenaeusvannamei euryhaline species optimal salinity practical salinity unit psu growth survival cultured inland water salinity psu worldwide past decade much research progress made physiological nutritional requirements white shrimp low salinity study reviews recent findings aspects growth survival energy metabolism stress resistance immunity white shrimp low salinity synthesizes recent research outcomes nutritional requirements attempt improve shrimp performance aquaculture low salinity white shrimp low salinity usually show slow growth low immunity high susceptibility pathogens high energy demand diet containing protein carbohydrate supplementations potassium sodium vitamin free amino acids gly cine alanine proline taurine antioxidants probiotics improve shrimp growth immunity low salinity white shrimp demonstrated ability synthesize dha epa lna low ambient salinity studies needed confirm finding future research focus understanding physiological mechanism adaptation associated salinity change nutritional manipulation specific dietary requirements essential fatty acids essential amino acids vitamins minerals nutrition mediated immune response also warrant study shrimp low salinity
cholangiocarcinoma intrahepatic bile duct carcinoma high mortality rate poor prognosis sarcomatous change epithelial mesenchymal transition emt frequently leads aggressive intrahepatic spread metastasis aim study identify genetic alterations gene expression pattern might associated sarcomatous change previously established human cell lines sck jck cho choi present study characterized typical sarcomatoid phenotype sck classified cell lines according tumor cell differentiation poorly differentiated jck moderately differentiated cho well differentiated choi cells morphologically immunocytologically analyzed genetic alterations two tumor suppressor genes fhit expression fas fasl gene well known related receptor ligand four cell lines deletion mutation found sarcomatoid sck cells cells expressed much less fas fasl mrnas ordinary cells characterize gene expression pattern involved sarcomatous progression using cdna microarrays contained genes comparison expression patterns sarcomatoid sck cells differentiated choi cells enabled identify genes genes significantly expressed expressed respectively northern blotting randomly selected genes verified microarray data including differential expressions lgals tgfbi ces ldhb uchl asph vdac vil ccnd calb mal gpx anxa mrnas immunohistochemistry also revealed part differential expressions gene proteins results suggest genetic gene expression alterations may relevant sarcomatous change emt cells
purpose aim study investigate two single nucleotide polymorphisms snp ptk associations human muscle strength phenotypes healthy men methods measurement maximal isometric voluntary knee extension mvcke torque net mvcke torque vastus lateralis specific force using established techniques completed caucasian men age year height mass mean participants provided either blood buccal cell sample dna isolated genotyped ptk snps using real time polymerase chain reaction results genotype frequencies snps hardy weinberg equilibrium specific force higher homozygotes allele carriers higher homozygotes allele carriers associations either snp net mvcke torque peak mvcke torque observed conclusions findings identify genetic contribution inter individual variability within muscle specific force provides first independent replication larger caucasian cohort association ptk snps muscle specific force thus extending understanding influence genetic variation intrinsic strength muscle
study question genetic effects regulate gene expression human endometrium summary answer study demonstrated strong genetic effects endometrial gene expression evidence genetic regulation gene expression menstrual cycle stage specific manner known already genetic effects expression levels many genes tissue specific endometrial gene expression varies across menstrual cycle stages individuals limited data genetic control expression endometrium study design size duration analysed genome wide genotype gene expression data map cis expression quantitative trait loci eqtl endometrium participants materials setting methods recruited women european ancestry dna samples blood genotyped illumina humancoreexome chips total rna extracted endometrial tissues whole transcriptome profiles characterized using illumina human expression beadchips performed eqtl mapping similar genotyped imputed single nucleotide polymorphisms snps genes main results role chance identified total cis snp probe associations study wide level significance correspond independent eqtls unique genes eqtls largest effect endometrial tissue churc performed context specific eqtl analysis investigate genetic effects gene expression regulation act menstrual cycle specific manner interestingly five cis eqtls identified significant stage genotype interaction strongest stage interaction eqtl corf pyroxd snp observe fold difference average expression levels heterozygous samples depending stage menstrual cycle large scale data summary eqtl results publicly available browse download limitations reasons caution limitation present study relatively modest sample size powered identify trans eqtls larger sample sizes also needed provide better power detect cis eqtls cycle stage specific effects given substantial changes expression across menstrual cycle many genes wider implications findings identification endometrial eqtls provides platform better understanding genetic effects endometriosis risk endometrial related pathologies study funding competing interest funding work provided nhmrc project grants gnt gnt gnt gnt gnt app competing interests
plants produce variety secondary metabolites defend pathogen attack pathogens evolved overcome plant defences producing enzymes degrade modify defence compounds however many compounds targeted pathogen enzymes currently remain enigmatic identifying host compounds targeted pathogen enzymes would enable understand potential importance compounds plant defence modify make insensitive pathogen enzymes proof concept metabolomics based method developed discover plant defence compounds modified pathogens using two pathogen enzymes known targets wheat tomato plant extracts treated purified pathogen enzymes subjected relative abundance metabolites treatment comparatively analysed using two enzymes different pathogens planta targets could found combining relatively simple enzymology power untargeted metabolomics key method dataset simplification based natural isotope occurrence statistical filtering scripted method presented aid understanding plant pathogen interactions may lead development new plant protection strategies
malignant pleural mesothelioma mpm aggressive tumor pleura poor prognosis active first line regimens platinum compounds pemetrexed standard second line treatment mpm advances understanding tumor molecular biology led development several targeted treatments evaluated clinical trials unfortunately none explored targeted treatments currently recommended routine treatment mpm reviewed biological pathways involved mpm clinical trials targeted therapy possible related mechanisms resistance suggest specific genetic markers needed targets selective therapy way selection patients based molecular profile may facilitate therapeutic strategy allows use appropriate drug patient elsevier ireland ltd rights reserved
rapid methods detection clinical treatment human norovirus hunov needed control foodborne disease outbreaks reliable techniques fast sensitive enough detect small amounts hunov food aquatic environments yet available explore interactions hunov concanavalin con could facilitate development sensitive detection tool hunov biophysical studies including hydrogen deuterium exchange hdx mass spectrometry surface plasmon resonance spr revealed metal coordinated region con spans asp converted nine alanine residues mcon affinity hunov gii diminishes demonstrating coordinated region responsible observed virus protein interaction mutated carbohydrate binding region con mcon cbr affect binding affinity significantly indicating mcr con major region interaction hunov gii results contribute development hunov concentration tool con immobilized polyacrylate beads con pab rapid detection genotypes genogroups gii method offers many advantages currently available methods including short concentration time hunov gii detected min recovery con pab application addition method used wide range values overall rapid sensitive detection hunov gii aid prevention virus transmission pathways method developed may applicability foodborne viral infections elsevier ltd rights reserved
purpose review recently discovery strategies reprogram somatic cells induced pluripotent stem ips cells led major paradigm change developmental stem cell biology application ips cells cardiac progeny opened novel directions study cardiomyopathies cellular molecular level review discusses approaches currently undertaken unravel known inherited cardiomyopathies dish recent findings improved efficiency mutation correction genome editing human ips cells provided platform untangle biology cardiomyopathies multiple studies derived pluripotent stem cells lines patients genetic heart diseases generation cardiomyocytes cells lines first time enable study cardiomyopathies using cardiomyocytes harboring patient specific mutations corrected isogenic counterpart molecular analyses functional assays drug tests lines led new molecular insights early pathophysiology left ventricular noncompaction cardiomyopathy lvnc hypertrophic cardiomyopathy hcm dilated cardiomyopathy dcm arrhyth mogenic right ventricular cardiomyopathy arvc others summary advent ips cells offers exceptional opportunity creating disease specific cellular models investigate underlying mechanisms optimize future therapy drug toxicity screening thus far ips cell model improved understanding genetic molecular pathophysiology patients various genetic cardiomyopathies hoped new discoveries arising using novel platforms cardiomyopathy research lead new diagnostic therapeutic approaches prevent treat diseases
background purpose mutations tet oncogene family member gene tet frequently found adult patients acute myeloid leukemia aml reports tet mutations children limited assessed prevalence tet mutations taiwanese children aml analyzed prognosis methods total consecutive children aml enrolled national taiwan university hospital analysis tet mutations performed using direct sequencing clinical characteristics overall survival compared patients without tet alterations results intronic missense mutations identified nonsense frameshift mutations observed two putative disease causing missense mutations identified one patient estimated prevalence tet mutations current patient population common polymorphism followed patients polymorphism increased year survival rate compared patients without chi square test different examined using kaplan meier method conclusion prevalence tet mutations children aml compared adults aml lower less complex patient prognosis associated tet mutations children requires investigation copyright formosan medical association published elsevier taiwan llc
chromatin immunoprecipitation chip allows enrichment genomic regions associated specific transcription factors histone modifications indeed epitopes arc present chromatin original chip methods used site specific pcr southern blotting confirm regions genome enriched candidate basis combination chip genomic tiling arrays chip chip allowed unbiased approach map chip enriched sites however limitations microarray probe design probe number detrimental impact coverage resolution sensitivity cost whole genome tiling microarray sets higher eukaryotes large genomes combination chip high throughput sequencing technology allowed comprehensive surveys genome occupancy greater resolution lower cost whole genome coverage herein provide comparison high throughput sequencing platforms survey chip seq analysis tools discuss experimental design describe detailed chip seq method
dimethyl sulfoxide dmso anti inflammatory antibacterial analgesic drug widely used treat several diseases reported literature detractive effect collagen deposition abnormal tissue study aimed investigate possible therapeutic effects dmso hypertrophic scar formation rabbits twenty four new zealand male albino rabbits randomly divided four groups control sham dmso tra triamcinolone acetonide except control group punch biopsy defects created animal right ear following hypertrophic scar formation day intralesional dmso triamcinolone acetonide administered week weeks scars dmso tra groups respectively therapeutic agent administered control sham groups one week last injection ear samples collected histopathological immunohistochemical real time polymerase chain reaction gene expression analyses histopathological examination revealed epithelium dmso group thicker control tra groups thinner sham group connective tissue thickness vascularity level sham group higher control dmso tra groups collagen type immunoreactivity level sham tra groups higher control dmso groups collagen type iii immunoreactivity level higher sham group groups collagen type type iii immunoreactivity ratios lower dmso group alignment collagen fibers normal dmso group irregular sham tra groups collagen type gene expression levels dmso tra groups lower sham group collagen type iii ifn gamma mrna expression levels almost similar among groups tgf beta mrna expression levels higher dmso tra groups control sham groups basis results concluded intralesional administration dmso decreases hypertrophic scar formation easily safely british association plastic reconstructive aesthetic surgeons published elsevier ltd rights reserved
fractional cell kill mathematical expression describing rate certain population cells reduced fraction order investigate fractional cell kill governs rate solid tumor lysed cell population cytotoxic cells ctls present several silico simulations mathematical analyses ctls eradicate efficiently tumor cells models predict correlation morphology tumors rate lysed however effectiveness immune cells decreased mathematical function fails reproduce process lysis limit thoroughly discussed new fractional cell kill proposed elsevier rights reserved
mucosal associated invariant mait cells donor unrestricted lymphocytes surprisingly abundant humans representing circulating cells enriched mucosal tissues mait cells recognize activated small molecule ligands produced microbes presented highly conserved mhc related antigen presenting protein ubiquitously expressed human cells increasing evidence suggests mait cells play protective role anti bacterial immunity mucosal interfaces fungi known produce mait activating ligands role mait cells fungal infections yet investigated viral infections specifically hiv received study mait cell biology clearly altered mechanisms explaining alterations clinical significance yet understood many questions remain unanswered potential mait cells protection pathogenesis infectious diseases interact universal donor unrestricted ligand presenting molecule mait cells may attractive immunotherapy vaccine targets new tools including development ligand tetramers next generation cell receptor sequencing potential accelerate mait cell research lead new insights role unique set lymphocytes infectious diseases
account beginnings later applications use nuclear magnetic resonance noninvasive medical diagnosis presented symposium held oxford september mark centenary birth hans krebs august
objective lung cancer one common leading causes cancer related death worldwide thus early detection might critical strategy improve patients prognosis survival present study designed assess micrornas expression profiling bronchoalveolar lavage cell fraction sputum could help non small cell lung cancer early detection materials methods relative expression selected micrornas mir mir mir quantified using real time polymerase chain reaction bronchoalveolar lavage cell fraction sputum samples non small cell lung cancer cases cancer free group written informed consent enrolled individuals obtained ethical scientific committees participating institution confirmed present study accordance ethical standards laid declaration helsinki results mir mir significantly downregulated non small cell lung cancer patients bronchoalveolar lavage sputum mir significantly upregulated overexpression mir positive strong correlation clinical stages cancer roc curve analysis mir oncomir mir tumor suppressor bronchoalveolar lavage sputum samples showed mir auc values mir auc values could excellent fair candidate microrna distinguish non small cell lung cancer patients cancerfree subjects respectively conclusion study reported significant differences micrornas expression bronchoalveolar lavage sputum samples lung cancer patients compared cancer free subjects represent potential role highly specific sensitive test improved early detection non small cell lung cancer elsevier masson sas rights reserved
mammals cellular nucleotidase activity encompasses number genetically structurally distinct enzyme forms either membrane bound soluble mainly cytosolic characterized broad specificity towards nucleoside monophosphate substrates differing base purine pyrimidine sugar oxy deoxy ribose moieties particular among cytosolic nts active towards pyrimidine nucleotides iii cdn ubiquitously distributed mammalian tissues treated single entity early days iii first linked genetic defect hereditary pyrimidine nucleotidase deficiency associated nonspherocytic hemolytic anemia disorder still unclear mechanism metabolically characterized abnormally high levels pyrimidine compounds ribonucleoproteins erythrocytes evidenced occurrence basophilic stippling blood smearings since first review pyrimidine specific nucleotidases amici magni arch biochem biophys excellent overviews topic appeared literature present contribution major findings two enzymatic proteins iii cdn described particular emphasis relationships structure function well roles normal pathological conditions catalytic mechanism specific hydrolytic phosphotransferase activities possessed enzymes discussed also light recent solution iii cdn three dimensional structures review also focuses possible therapeutic approaches involving cellular nts detoxifying common antiviral antineoplastic drugs
fusarium head blight major disease wheat important contributor reduced cultivation wheat south africa crop often grown irrigation collected fusarium isolates fusarium head blight infected wheat heads seven irrigated wheat growing areas south africa six fusarium species chlamydosporum crookwellense culmorum equiseti graminearum semitectum recovered three chlamydosporum equiseti semitectum previously associated fusarium head blight south africa fusarium graminearum occurred high frequencies seven locations based polymerase chain reaction pcr assays diagnostic sequences isolates predicted produce deoxynivalenol nivalenol fusarium graminearum sensu lato appears primary causal agent fusarium head blight irrigated wheat south africa may case wheat cultivated rain fed conditions rotations irrigated wheat graminaceous crops maize could increase fungal inoculum disease pressure establishment fusarium head blight irrigated wheat region country means resistant lines alternative agronomic practices needed limit disease severity yield losses mycotoxin contamination
mirnas emerged key regulators gene expression plants animals small generally rna molecules originated primary hairpin transcripts induce translational suppression direct mrna cleavage similar regular mrnas expression mirnas highly regulated expression pattern could provide critical clues understanding mirna functions however man previously identified mirna families multiple paralogous loci within family different members often closely related sometimes give rise identical mirnas poses critical challenges analysis individual mirna genes chapter describes several methods commonly used mirna expression analysis including high throughput sequencing microarrays briefly discusses qrt pcr northern blotting approaches used data validation
plastids complex organelles integrated plant host cell differentiate divide tune plant differentiation development line prokaryotic origin plastid division involves evolutionary conserved proteins proteins eukaryotic origin host acquired control process plastid division apparatus spatially separated stromal cytosolic space clear coordination mechanisms exist two machineries knowledge plastid division process increased dramatically past decade recent findings shed light plastid division enzymology formation plastid division complexes also integration division process multicellular context review summarises current knowledge plastid division emphasis biochemical features functional assembly protein complexes regulatory features overall process
immunomodulatory effects dietary glucan evaluated silver catfish glucan added diet fed fish days evaluate effects blood innate immune parameter fed days evaluate growth rate resistance challenge pathogenic aeromonas hydrophila found adding glucan diet effect fish growth effect blood cells serum bacterial agglutination serum myeloperoxidase activity however fish received glucan diet natural hemolytic activity complement significantly higher compared control fish furthermore fish fed glucan challenged hydrophila fewer bacteria blood presented significantly higher survival rate compared control fish thus concluded glucan might explored feed additive aiming improve silver catfish innate immunity resistance specific pathogen
recent years immunotherapy gained renewed interest alternative therapeutic approach solid tumors premise based harnessing power host immune system destroy tumor cells development immune mediated therapies vaccines adoptive transfer autologous immune cells stimulation host immunity targeting tumor evasive mechanisms advanced cancer immunotherapy addition studies innate immunity mechanisms immune evasion enhanced understanding immunology liver cancer preclinical clinical studies immune mediated therapies shown potential benefits patients liver cancer review summarize current knowledge recent developments tumor immunology focusing two main primary liver cancers hepatocellular carcinoma cholangiocarcinoma
color common channel displaying data surface visualization affected shadows shading used convey surface depth shape understanding encoded data context surface structure critical effective analysis variety domains molecular biology physical world lightness constancy allows people accurately perceive shadowed colors however effectiveness complex synthetic environments surface visualizations well understood report series crowdsourced laboratory studies confirm existence lightness constancy effects molecular surface visualizations using ambient occlusion provide empirical evidence common visualization design decisions impact viewers abilities accurately identify encoded surface colors findings suggest lightness constancy aids understanding color encodings surface visualization reveal correlation visualization techniques improve color interpretation shadow enhance perceptions surface depth results collectively suggest understanding constancy practice inform effective visualization design
melanoma aggressive tumor expresses pigmentation enzyme tyrosinase tyrosinase expression increases tumorigenesis could allow selective treatment tumor type strategies use tyrosinase activity approaches targeting tyrosinase would involve gene transcription signal transduction pathways mediated direct indirect manner two pathways proposed exploiting tyrosinase expression dependent pathway leading apoptosis arrest reactive oxygen species mediated induction endoplasmic reticulum stress mutant tumors strategies could use tyrosinase mediated activation quercetin dietary polyphenol induces expression modulates reactive oxygen species addition antitumor signaling properties activation quercetin could complement conventional cancer therapy induction phase detoxification enzymes resulting stabilization transduction downstream targets conclusion recent advances tyrosinase enzymology prodrug chemistry modern chemotherapeutics present intriguing selective multitherapy targeting system dietary bioflavonoids could used complement conventional cancer treatments
integrins family heterodimeric proteins expressed cardiac fibroblasts cardiomyocytes provide critical adhesive signaling functions interactions extracellular matrix ecm actin cytoskeleton adhesive processes important paracrine signaling ecm homeostasis intercellular interactions impact cardiac cell biology pathophysiological adaptation disease despite considerable progress understanding interplay cardiac cells ecm integrins remains largely elusive review examine role integrins adhesive signaling functions functions enable communication cardiac fibroblasts cardiomyocytes ecm processes strongly influence cardiac development later progression cardiac disease improved understanding multi dimensional system cardiac tissues needed decipher biological spatiotemporal mechanical cues regulate cardiac health manifestation cardiac disease greater insight integrin function cardiac tissues may also suggest new treatments prevention heart failure
taxonomic differentiation among lactic acid bacteria lab using phenotypic methods inadequate past several phenotypic techniques applied identification different species lab nigerian indigenous fermented foods study two less expensive rapid molecular techniques employed identification differentiation lab species isolated nigerian fermented foods gari cassava mash fufu cassava dough ogi maize gruel avoid common errors synonymous use conventional methods size amplified products lab species using universal primers differentiation three predominant lab lactobacillus plantarum pediococcus pentosaceus weissella confusa species level performed intergenic transcribed spacer pcr amplified ribosomal dna restriction analysis ardra using three restriction endonucleases hinfi haeiii rsai summary study demonstrated ardra pcr analysis simple fast efficient methods used routine identification rapid differentiation lab species often regularly used probiotics starter culture biopreservative fermented foods consumed since generally regarded safe gras elsevier ltd rights reserved
limited efficacy immune checkpoint inhibitors hepatocellular carcinoma hcc observed clinical trials thus prompting investigation combination therapy interleukin important roles modeling immune responses cancers hypothesized blockade would enhance antitumor immunity hcc synergize anti programmed death ligand checkpoint inhibitor treating hcc sources immune modulating effects investigated hcc models combination anti anti tested hcc bearing mice found mainly secreted cancer associated fibroblast cafs tumor cells hcc high expression cafs could induce strong immunosuppression hcc microenvironment recruiting immunosuppressive cells myeloid derived suppressive cells addition high expression cafs also impaired tumor infiltrating cell function via upregulating inhibitory immune checkpoints using blockade could reverse anti resistance hcc tumor model conclusion study indicates targeted inhibition may enhance efficacy anti hcc providing potential strategy overcoming anti resistance hcc published elsevier inc
interaction cells natural environment influences large variety cellular phenomena including cell adhesion proliferation migration complex extracellular matrix network challenged attempts replicate vitro heterogeneity cell environment threatened general relevance vitro studies work describe new extremely versatile approach generate native like extracellular matrices controlled morphologies vitro study cellular processes general approach combines confluent culture fibroblasts microfabricated guiding templates direct three dimensional growth well defined extracellular networks recapitulate structural biomolecular complexity features typically found vivo evaluate performance studied fundamental cellular processes including cell cytoskeleton organization cell matrix adhesion proliferation protrusions morphodynamics cases found striking differences depending matrix architecture particular compared standard two dimensional environments also assessed whether engineered matrix networks influenced cell migration dynamics locomotion strategy finding enhanced migration efficiency cells seeded aligned matrices altogether methodology paves way development high performance models extracellular matrix potential applications tissue engineering diagnosis stem cell biology
conjugated linoleic acid cla refers family polyunsaturated fatty acids represented group isomers linoleic acid called conjugated double bound simple bound among isomers trans cis cis cis cla stand isomers lead different effects body anticarcinogenic antidiabetogenic antiatherogenesis positive body composition alteration objective review describe mechanisms action effects body composition plasmatic lipoproteins supplementation studies cla supplementation show capacity reducing fat percentage body mass promoting improvement lipid metabolism one adverse effects attributed one isomers insulin resistance body fat redistribution limitations scientific models used cla researches make impossible draw conclusions action fatty acid human metabolism
selenium essential micronutrient human health due antioxidant capabilities content around world highly variable areas china finland seleniferous soils tuva russia however one billion people world wide deficient last decade studies related strategies biofortification food plants human nutrition significantly increased metalloid incorporated human metabolism mainly constituent food plants similarly biofortification important pastures increasing content cattle enrich meat prevent disease associated deficiency white muscle disease china two endemic diseases related deficiency keshan keshin beck diseases agronomic biofortification using inorganic sources current practice countries china finland usa chile fertilization using chemical compounds uncommon practice due edaphoclimatic characteristics andisols represent around agricultural soils southern chile recent studies showed microorganisms bacteria arbuscular mycorrhizal fungi play important role transformations availability representing interesting biotechnological alternative biofortification review focalized describing behavior soil plant system possible strategies improving content including use microorganisms biotechnological tools increasing plant nutrition quality specific attention devoted volcanic soils southern chile different factors concur enhance deficiency problem
within past years several investigators reported presence immunoglobulin brain neurons however immunoglobulin molecules known produced lymphocytes suspected neurons taking immunoglobulin extracellular fluid aim study determine whether immunoglobulin actually produced neurons immunohistochemistry western blotting analysis found immunoglobulin also present adult mouse brain neurons isolated neonatal mouse neurons respectively importantly situ hybridization northern blotting single cell reverse transcriptase polymerase chain reaction transcripts rearranged immunoglobulin gamma chain chain also found adult mouse brain neurons confocal imaging primary culture neurons showed immunoglobulin immunoreactivity localized neuron cytoplasm axons dendrites immunoglobulin extracted primary culture neurons could also detected western blotting furthermore results sulphur iodine pulse labeled immunoprecipitation provided additional confirmation brain neurons could produce immunoglobulin taken together results indicated immunoglobulin originated early generated adult mouse neurons although bioactivity neuron derived immunoglobulin yet clear believed immunoglobulin might play important role neuronal development elsevier ltd rights reserved
colorectal cancer second common cause cancer related death due migration tumor cells distant sites metastasis accumulating data indicate mcirornas play important role several aspects colon cancer cell biology herein examined role mir colon cancer cell migration induced ccl ccr axis colon cancer cells found mir knockdown serum starved colon cancer cells decreased ccl induced cell chemotaxis moreover knocking mir markedly decreased ccl provoked activation rhoa colon cancer cells bioinformatics analysis predicted two putative binding sites rich element utr rhoa mrna mir binding rhoa mrna verified using target site blocker functionally validated rna immunoprecipitation assays showing mir dependent regulation rhoa mrna mediated rich elements present utr region taken together results show mir positively regulates rhoa mrna levels translation well cell migration serum starved colon cancer cells indicate targeting mir might useful strategy antagonize colon cancer metastasis
detection porcine reproductive respiratory syndrome virus prrsv oral fluids quantitative real time polymerase chain reaction qrt pcr gaining increasing popularity however different steps leading result extensively evaluated aim present study examine effect performance qrt pcr different sampling materials conditions storage need centrifuging well compare rna extraction methods pcr mixes assays pen based oral fluids used pooled spiked serial dilution genotype circle tcid type prrsv isolate centrifugation min resulted increase sensitivity pcr cycles significant lowest dilution tested trizol magmax rna extraction methods gave maximum sensitivity lowest threshold cycle equivalent virus concentrations agpath one step pcr kit pcr mix reagents sensitive detection prrsv using purified plasmid standard lsi vetmax prrsv prrsv reagents resulted slightly better sensitivity present results may useful standardize protocols optimizing detection type prrsv qrt pcr elsevier rights reserved
aims background traditional chemotherapy strategies human leukemia commonly use drugs based cytotoxicity eradicate cancer cells one predicament substantial damage normal tissues likely occur course standard treatments obviously urgent explore therapies effectively eliminate malignant cells without affecting normal cells previous studies indicated ginsenoside major active pharmacological ingredient ginseng could delay normal hematopoietic stem cell senescence however whether induce cancer cell senescence still unclear methods current study human leukemia cells subjected exposure optimal drug concentration duration cells obtained mtt colorimetric test effects cell cycle analyzed using flow cytometry beta gal staining colony forming ability measured colony assay telomere lengths assessed southern blotting expression senescence associated proteins western blotting ultrastructural morphology changes observed transmission electron microscopy results cells demonstrated maximum proliferation inhibition rate concentration mol cells exhibiting dramatic morphological alterations including enlarged flat cellular morphology larger mitochondria increased number lysosomes senescence associated beta galactosidase beta gal activity increased cells also decreased ability colony formation shortened telomere length well reduction proliferating potential arrestin phase interaction senescence associated proteins significantly regulated conclusion ginsenoside induce state senescence human leukemia cells associated pathways
function azi systemic acquired resistance arabidopsis confirmed investigation phenotypic features wild type col azi dna knockout azi overexpressing plants infection virulent avirulent pseudomonas syringae real time quantitative pcr northern blotting analyses showed transcript abundances genes increased significantly local systemic leaves wild type col azi overexpressing plants challenged avirulent syringae whereas mrna accumulation genes obviously attenuated local systemic leaves azi dna knockout plants localized infiltration avirulent psm avrrpm changes metabolomic profiles distal leaves three types materials infected avirulent syringae determined nmr spectrometry data mining showed soluble carbonhydrates might function signal substances systemic immunity arabidopsis time expression sugar signaling genes local distal leaves infection avirulent syringae compared result found transcript abundances sugar signaling genes including sus sus sus sus sut hxk hxk snrk erd tps tor snrk snrk bzip obviously changed distal leaves different materials modulated azi activities indicating sugar related genes involved regulation systemic immunity mediated azi results also illustrated immune system associated sugar molecules probably important part systemic acquired resistance arabidopsis elsevier masson sas rights reserved
importance internal post translational modification ptm protein signaling function long known appreciated however significance ptms alpha amino group terminal amino acids comparatively understudied historically considered static regulators protein stability additional functional roles terminal ptms beginning elucidated new findings show terminal methylation along terminal acetylation important regulatory modification significant roles development disease progression also emerging studies enzymology functional roles terminal ubiquitylation terminal propionylation discuss recent advances functional studies terminal ptms recount new terminal ptms identified briefly examine possibility dynamic terminal ptm exchange
multifunctional transcription factor activates represses gene transcription depending interactions regulatory proteins include coactivator yyap describe cloning novel homolog yyap referred yarp human neuroblastoma cell line cloned cdna encoded amino acid protein contained domain homologous entire yyap sequence amino acids two splice variants yarp yarp also cloned northern blotting demonstrated yarp mrna similar increased fold dibutyryl camp induced neural differentiation cells presence yarp mrna also confirmed human tissues heart brain placenta bioinformatic analysis predicted various functional motifs yarp structure including nuclear localization signals domains associated protein protein interactions pah dna binding sant chromatin assembly nucleoplasmin like outside yyap homology domain thus propose yarp multifunctional plays role analogous yyap also specific roles dna utilizing processes transcription
recent studies reported unusually high frequency nonamplifying alleles microsatellite loci bivalves null alleles associated heterozygous deficits many studies several studies tested presence using different analytical tools empirically tested consequences estimating population structure differentiation characterised newly developed microsatellite loci show null alleles ubiquitous wedge clam donax trunculus carried several tests demonstrate large heterozygous deficits observed newly characterised loci likely due null alleles wetested robustness microsatellite genotyping population assignment showing well recognised biogeographic regions south atlantic south mediterranean coast spain harbour genetically different populations
beta gene encoding choline dehydrogenase escherichia coli coli transformed wheat triticum aestivum via agrobacterium mediated transformation pcr amplification southern blotting confirmed existence transgene transformed plants progeny levels expression beta gene varied among different transgenic lines based pcr analysis salt stress conditions transgenic lines higher levels glycine betaine chlorophyll lower ratios solute potential less cell membrane damage lines also retained moderately higher photosynthesis rates vigorous growth wild type line nacl field trial high salt field transgenic lines higher germination rates tillers higher grain yields comparison wild type plants suggested transgenic plants tolerant salt stress potential breeding salt tolerant wheat
function rhog rac activator explored ovary ovarian follicular development pathological conditions help immunoblotting immunolocalization determined expression localization rhog normal estrous cycle polycystic ovaries using sprague dawley rat model employing polymerase chain reaction flow cytometry analyzed transcript expression levels downstream molecules rhog dock rac polycystic ovarian syndrome pcos ovary along normal antral follicular theca granulosa cells dehydroepiandrosterone dhea supplementation effect rhog knockdown dock vav rac expression evaluated human ovarian cells skov theca cells granulosa cells rats help flow cytometry oocyte secondary follicles along stromal cells showed optimal expression rhog immunoblotting rhog revealed maximum expression diestrus proestrus downregulated estrus stage mild immunostaining rhog also present theca granulosa cells secondary antral follicles polycystic ovary exhibited weak immunostaining rhog corroborated immunoblotting based investigations rhog effectors dock elmo found reduced ovary pcos condition dhea rhog silencing reduced expression dock rac theca granulosa cells rat antral follicles mirrored human ovarian cells collectively rhog mediate signaling downstream effectors dock rac ovarian follicular development theca granulosa cells oocyte dhea downregulated pcos ovary
objectives alstrom syndrome rare multi system condition characterized retinal degeneration sensorineural hearing loss obesity insulin resistant diabetes hypertriglyceridemia cardiomyopathy hepatorenal disease recurrent respiratory infections belongs group genetic disorders known primary ciliopathies includes autosomal dominant recessive polycystic kidney diseases well joubert bardet biedl syndromes prior studies suggested phenotypic overlap primary ciliopathies affecting non motile sensory cilia primary ciliary dyskinesia pcd motile ciliopathy characterized respiratory tract disease methods describe burden oto sino pulmonary disease individuals examines degree clinical overlap pcd evaluation nih clinical center included clinical examination chest imaging clinical history surveys well measurement nasal nitric oxide nno nine patients results recurrent otitis media ubiquitous cohort requiring pressure equalization tube placement history bronchitis pneumonia sinusitis reported individuals respectively pcd characterizing symptoms laterality defects unexplained neonatal respiratory distress year round nasal congestion wet cough far less prevalent cohort compared pcd average nno production cohort min compared cut min pcd conclusions data suggest oto sino respiratory complications prominent enough warrant increased clinical attention significantly impaired respiratory cilia function seen pcd unlikely trial nct pediatr pulmonol wiley periodicals inc
objective study assess immune stress responsiveness cows identified extremely high low feed conversion efficiency phenotypes study utilised holstein friesian cows third fourth lactation identified either extremely high extremely low feed conversion efficiency commercial vaccine used induce measurable antibody cell mediated adaptive immune responses assess general immune responsiveness stress responsiveness assessed measuring changes plasma cortisol concentrations response yarding handling significant differences antibody cell mediated immune responsiveness observed extreme high low feed conversion efficiency phenotypes respectively however results suggested plasma cortisol concentrations trended higher low feed conversion efficiency phenotype cows high feed conversion efficiency counterparts post yarding handling significant negative correlation observed antibody mediated immune responsiveness stress responsiveness cell mediated immune responsiveness study provides preliminary evidence cows selected feed conversion efficiency may improved stress coping abilities immune responsiveness
seed germination early seedling establishment critical stages plants life cycle stages precisely regulated multiple internal factors including phytohormones environmental cues light family small molecules discovered wildfire smoke karrikins kars play key role various biological processes including seed dormancy release germination regulation seedling establishment kars show high similarity strigolactone chemical structure signaling transduction pathways current evidence shows kars may regulate seed germination mediating biosynthesis signaling transduction abscisic acid aba gibberellin auxin indoleacetic acid iaa interestingly kars regulate seed germination differently different species furthermore promotion effect seedling establishment implies kars great potential application alleviating shade avoidance response attracts attention plant molecular biology processes kars may complicated interactions phytohormones especially iaa updated review summarize current understanding relationship kars chemical structure signaling pathway regulation plant growth development crosstalk kars phytohormones regulating seed germination seedling development kars iaa shade responses discussed finally future challenges research directions kar research field suggested
background dnmta dna methyltransferase establishes novo dna methylation mammals structure dnmta terminal domain similar bacterial hhai enzyme well studied prokaryotic dna methyltransferase ray structure available complex dnmta dna mechanistic details dna recognition catalysis mammalian dnmts completely understood results mutant variants catalytic domain murine dnmta carrying substitutions highly conserved generated site directed mutagenesis purified methylation activity dna binding affinity ability flip target cytosine dna double helix covalent complex formation dna examined substitutions lead reduced catalytic activity reduced base flipping catalytic activity base flipping covalent conjugate formation almost completely abolished mutant enzymes substitutions conclusions conclude plays similar role catalysis dnmta sssi hhai could positioning cytosine nucleophilic attack conserved cys dnmta important catalysis cytosine flipping conserved involved creating stabilizing transient covalent intermediate methylation reaction might contribute positioning residues motif play direct role catalysis
background human leukocyte antigen hla system plays critical roles regulating immune responses various vaccines study aimed evaluate association hla class gene polymorphisms long term duration anti hbs response children vaccinated hepatitis infancy methods totally children years completion primary vaccination hepatitis infancy without booster immunization natural resolved infection enrolled children anti hbs miu defined long term responders ten alleles hla subregions detected polymerase chain reaction sequence specific primers results frequency hla dqb long term non hypo responder group relatively higher long term responder group however difference statistical significance bonferroni correction frequencies seven hla drb alleles including two hla dqb alleles including similarly distributed long term non hypo responders responders respectively conclusion none ten hla class gene alleles previously reported related short term antibody response hepatitis vaccine associated long term antibody response vaccination infantile elsevier ltd rights reserved
spatial abilities encompass several skills differentiable general cognitive ability importantly spatial abilities shown significant predictors many life outcomes even controlling date studies analyzed genetic architecture diverse spatial abilities using multivariate approach developed gamified measures diverse putative spatial abilities battery tests administered online twin pairs age representative twins early development study teds show spatial abilities constitute single factor phenotypically genetically even controlling spatial ability factor highly heritable draw three conclusions high heritability spatial abilitymakes good target gene hunting research genes specific spatial ability independent iii genes associated components spatial ability
parasitism thought play major role shaping host genomes predicted genomic regions associated resistance parasites stand genome scans revealing signals selection genomic background test whether parasitism indeed major factor host evolution better understand host parasite interaction molecular level studied genome wide polymorphisms genotypes planktonic crustacean daphnia magna originating three localities across europe daphniamagna known coevolve bacterial pathogen pasteuria ramosa host genotypes clonal lines either resistant susceptible using association mapping identified two genomic regions involved resistance ramosa one already known previous qtl analysis performed naive genome scan test signatures positive selection found two regions identified association mapping stood outliers several regions evidence selection also found link regions phenotypic variation could established results consistent hypothesis parasitism driving host genome evolution
nutritional immunology immunometabolism identification novel immunotherapeutic targets areas active investigation parasitology well documented crosstalk among immune cells cells metabolically active tissues important homeostasis numbers function cells altered obesity leading inflammation variety helminths spend part life cycle gastrointestinal tract even entirely enteral nematode infections exert beneficial effects glucose lipid metabolism foundation review ability enteric nematode infections improve obesity induced type diabetes metabolic syndrome significant health issues developed areas considers impact nutrition specific nutritional deficiencies occur undeveloped developed areas host ability mount protective immune response parasitic nematodes number proposed mechanisms parasitic nematodes impact metabolism including effects gastrointestinal hormones altering epithelial function changing number phenotype immune cells metabolic tissues nematodes also exert beneficial effects cytokines activate transcription factor stat upregulates genes regulate glucose lipid metabolism
model animals crucial biomedical research among commonly used model animals amphibian xenopus tremendous impact unique experimental advantages cost effectiveness close evolutionary relationship mammals tetrapod past years use xenopus made possible many fundamental contributions biomedicine cornerstone research cell biology developmental biology evolutionary biology immunology molecular biology neurobiology physiology prospects xenopus experimental system excellent xenopus uniquely well suited many contemporary approaches used study fundamental biological disease mechanisms moreover recent advances high throughput dna sequencing genome editing proteomics pharmacological screening easily applicable xenopus enabling rapid functional genomics human disease modeling systems level
seven kinds transgenic tobacco plants transformed combinations three fbe genes obtained transgenic plants transformed sst sft genes appeared highest fructan soluble sugar content strongest salt tolerance fructan thought one important regulators involved plant tolerance various abiotic stresses study wheat derived genes sst sft fft encoding fructan biosynthesis enzymes fbe isolated cloned vectors modified pbi pzp seven different combinations three target genes transformed tobacco plants agrobacterium mediated approach transgenic tobacco plants identified pcr elisa southern blotting compared tobacco plants transformed six combinations three target genes wild type plants transgenic plants transformed sst sft genes contained highest fructan soluble sugar content seven types transgenic tobacco plants displayed much higher level tolerance drought low temperature high salinity compared wild type differences drought low temperature tolerance transgenic plants containing single fbe gene harboring two three fbe genes significant salt tolerance level transgenic plants different fbe gene combinations high low sst sft sst sft fft sst fft sft fft single fbe gene results indicated tolerances transgenic tobacco plants various abiotic stresses associated transformed target gene combinations contents fructan soluble sugar contained transgenic plants
polarized epithelial cells sort newly synthesized recycling plasma membrane proteins distinct trafficking pathways directed either apical basolateral membrane domains trans golgi network well established site protein sorting increasing evidence indicates key role endosomes initial trafficking newly synthesized proteins basolateral apical proteins shown traverse endosomes route plasma membrane particular apical proteins traffic either subapical early recycling endosomes use snap tag system analyze trafficking apical protein also known podocalyxin show newly synthesized traverses apical recycling endosome apical early endosomes aees contrast post endocytic delivered aee recycling back apical membrane pathways pursued newly synthesized recycling populations detectably intersect demonstrating biosynthetic post endocytic pools protein subjected distinct sorting processes
many small rnas cloned animal gonads example endogenous small interfering rnas endo sirnas found oocytes piwi interacting rnas pirnas found testis gallus gallus chicken important model organism small rnas identified gonads study isolated cloned small rnas adult chicken testes since reasonably even distribution small rnas slightly longer mirnas endo sirnas genome mapping indicated small rnas derived intergenic regions exons introns repetitive elements including chicken repeat long terminal repeats simple repeats since similar pirnas named pirna like rnas pil rnas northern blotting selected sequences showed nine specifically expressed adult testis vast majority pil rnas poorly conserved species suggesting unique adult chicken testis analysis cloned pil rnas improve understanding function small rnas animal gonad development
aim investigate whether morphological variation continental radiation lizards chamaeleonidae driven ecological opportunity location kwazulu natal south africa methods chameleons morphotypes genotyped using microsatellite one mitochondrial marker genetic spatial structure examined bayesian framework compared ecomorphological forms identify distinct chameleon groups using total evidence approach ecological niche modelling projected back last glacial maximum last interglacial used make inferences regarding processes may facilitated diversification ecological opportunity results three inland groups genetic morphological evidence agreement suggesting candidate species however discordance evidence populations coastal regions although different time scales data allow make inferences regarding disparity microsatellite data suggest least three independent origins coastal chameleons although three clusters show ecomorph indicates convergence phenotype similar environment species distribution models revealed high niche stability among inland groups suggesting presence refugia chameleons whereas coastal niche dynamic likely resulted recent origins groups main conclusions dynamic climatic niche corresponding vegetation shifts likely shaped contrasting ecomorphological genetic patterns within continental radiation creating ecological opportunity coastal chamleons contrast inland groups climatically stable regions show concordance lines evidence suggesting niche stability allowed chameleons diverge genetically phenotypically
signaling mediated extracellular signal regulated kinases erk involved numerous cellular processes mitogen activated protein kinase kinases mek catalyze phosphorylation erk converting active kinase regulates expression numerous genes cellular processes inhibitors mek demonstrated preclinical clinical efficacy certain cancers types cardiomyopathy report synthesis novel allosteric macrocyclic mek inhibitor potently inhibits eric activity cultured cells tissues mice systemic administration mice dilated cardiomyopathy caused lamin gene mutation abnormally increased cardiac erk activity mice novel mek inhibitor well tolerated improves left ventricular systolic function decreases left ventricular fibrosis beneficial effects skeletal muscle structure pathology prolongs survival novel mek inhibitor described herein may therefore find clinical utility treatment rare cardiomyopathy types cardiomyopathy cancers humans elsevier ltd rights reserved
background telomerase expression maintenance critical telomere length cancer initiation indicates telomere shortening telomerase expression initiates cancer induction chromosomal instability methods telomerase activity human telomerase reverse transcriptase htert expression investigated hepatocellular carcinoma hcc chronic hepatitis patients telomerase repeat amplification protocol southern blotting reverse transcriptase polymerase chain reaction results telomerase positive hcc chronic hepatitis patients mean telomere length mtl hcc significantly shorter compared chronic hepatitis mtl significantly different hcc patients without cirrhosis hepatitis virus hepatitis virus non non related hcc groups differences found telomerase activity mtl htert regulator telomerase however positive hccs correlation telomerase activity htert mrna expression statistically significant mtl telomerase positive hcc cases significantly shorter mtl telomerase negative cases conclusion majority hccs exhibited telomerase activity correlated well htert expression mtl hcc significantly shorter chronic hepatitis also found shorter telomeres present telomerase positive hcc cases however correlation found telomerase activity respect viral status hcc
background traditionally squamous cell carcinoma scc lung central rather peripheral form lung cancer rates scc lung periphery typically sited range recently observed significant portion newly diagnosed scc located periphery comprehensive review tumor data facility busy teaching hospital large cohort cancer patients undertaken assess whether substantive change traditional epidemiologic distributions lung cancer specifically respect scc given differences cell biology carcinogenesis central versus peripheral scc potential epidemiologic shift might suggest change tumor biology methods may may histopathologically confirmed diagnoses scc lung retrospectively reviewed patient lesion classified peripheral central based evidence results total patients diagnosed scc peripheral central scc twenty nine patients prior history malignancy subset patients peripheral scc central scc conclusion findings appear correlate initial observation within institution substantive shift traditional distribution scc majority cancers diagnosed lung periphery opposed central locations
background studies children food allergy typically include mother investigated relationship amount allergen needed elicit clinical reaction threshold health related quality life hrql aims compare self reported parent reported hrql different age groups evaluate impact severity allergic reaction threshold hrql iii investigate factors associated patient reported parent reported hrql methods age appropriate food allergy quality life questionnaires faqlq completed children adolescents adults peanut hazelnut egg allergy parents mothers fathers assessed child hrql using faqlq parent form clinical data threshold values obtained hospital database significant factors hrql investigated using univariate multivariate regression results female patients reported greater impact food allergy hrql males egg hazelnut thresholds affect hrql lower peanut threshold associated worse hrql parents scored child hrql better child assessment whereas mother reported hrql significantly affected limitations child social life father reported hrql affected limitations family social life severity allergic reaction contribute significantly hrql conclusion risk accidental allergen ingestion limitations social life associated worse hrql fathers provide unique perspective greater opportunity contribute food allergy research
adb chminaca mab chminaca new synthetic cannabinoid high potency many reported adverse events fatalities drug currently scheduled several countries europe usa analytical methods need developed confirm adb chminaca intake clinical forensic programs many synthetic cannabinoids parent compound detectable biological samples intake making detection metabolites way prove consumption therefore detection adb chminaca metabolites biological specimens critical since currently published data adb chminaca metabolism aimed identify major metabolites cryopreserved human hepatocytes incubated mol adb chminaca incubations analyzed liquid chromatography biphenyl column high resolution tandem mass spectrometry orbitrap metabolite identification software reference standard six commercially available potential metabolites simultaneously analyzed conditions allow correct assignment isomers detected ten major metabolites biotransformations mainly occurred cyclohexylmethyl tail compound also observed structural analogs metabolism minor reactions also occurred tert butyl chain two analytical standards potential metabolites matched actual metabolite detected hepatocyte incubations recommend adb chminaca hydroxycyclohexylmethyl adb chminaca aeuro hydroxycyclohexyl adb chminaca hydroxycyclohexylmethyl metabolite targets document adb chminaca intake clinical forensic cases additionally results guide analytical standard manufacturers better provide suitable references studies adb chminaca metabolism
thanks contributions scientists like bert vallee zinc enzymology area research rich history strong basis biochemical biophysical knowledge recent years dramatic development genomic post genomic research provided well fields life sciences massive body new data including limited protein sequence structural data integrating new data wealth information available literature possible achieve unprecedented overview properties functions zinc enzymes context biological systems aim role bioinformatics essential work use bioinformatics tools databases developed study metalloproteins gain insights functions zinc zinc enzymes coordination properties usage zinc enzymes living organisms elsevier inc rights reserved
small rnas nucleotides long nonprotein coding increasingly investigated responsible phenomena described rna interference rnai cosuppression gene silencing quelling major classes small rnas include micrornas mirnas small interfering rnas sirnas differ biosynthesis mirnas control expression cognate target genes binding reverse complementary sequences resulting cleavage translational inhibition target rna sirnas similar structure function biogenesis mirnas sirnas derive long double stranded rna transgenes endogenous repeat sequences transposons understanding fundamental processes requires sensitive specific detection small rna species report present simple northern blot protocol small rnas transgenic plants
canine leishmaniosis canl caused parasite leishmania infantum systemic disease present variable clinical signs clinicopathological abnormalities clinical manifestations range subclinical infection severe systemic disease leishmaniosis categorized neglected tropical disease complex immune responses associated leishmania species makes therapeutic treatments vaccine development challenging dogs humans review summarize innate adaptive immune responses associated infantum infection dogs discuss problems associated disease well potential solutions future direction required research help control parasite
salivary diagnostics great potential used early detection prevention many cancerous diseases implemented rigour efficiency result improving patient survival times achieving earlier diagnosis disease recently extraordinary efforts taken develop non invasive technologies applied without complicated expensive procedures saliva biofluid demonstrated excellent properties used diagnostic fluid since many biomarkers suggested cancers also found whole saliva apart blood body fluids currently accepted gold standard methods biomarker development include chromatography mass spectometry gel electrophoresis microarrays polymerase chain reaction based quantification however salivary diagnostics flourishing field rapid development novel technologies associated point care diagnostics rna sequencing electrochemical detection liquid biopsy technologies help introduce population based screening programs thus enabling early detection prognosis assessment disease monitoring purpose review give comprehensive update emerging diagnostic technologies tools early detection cancerous diseases based saliva
effects resistant starch human metabolism considered beneficial decrease postprandial glycaemia following ingestion starch rich foods using type resistant starches found direct competitive inhibitory effect porcine pancreatic amylase action affecting catalytic efficiency wheat maize starches used substrates resistant starches gelatinise modifications gelatinisation parameters observed concluded inhibitory action types polymer seem consequence impaired diffusion enzyme substrate products increase branches two types resistant starches used thus effects type type resistant starches lowering postprandial glycaemia involve modification gut physiology also include direct inhibition first stage biochemical degradation starch
various grafts combination bone substitute materials used sinus lift procedures currently ongoing developments several disciplines molecular biology chemistry computer science engineering contributed understanding biological processes leading bone healing use bone substitute materials bsbs therefore behavior bsbs understanding properties graft enables individual treatment concepts therefore allows shift simple replacement material modern concept individually created composite biomaterial indeed choice best bsb still remains crucial success maxillary sinus augmentation procedures present article provides overview materials currently available sinus lift specific focus histological molecular cellular pharmaceutical aspects
serum cultured embryonic stem cells escs show different epigenetic landscapes transcriptomic profiles difference function expression micrornas mirnas two states remains unclear showed serum cultured escs exhibited distinctive mirna expression profiles mirnas differentially expressed expression changes largely due transcriptional regulation characterized function mirnas differentially expressed two conditions found escs exhibited higher degree dependency mirnas rapid proliferation since dgcr dicer wild type escs showed slower growth rate accumulation phase serum condition interestingly introduction various self renewal silencing mirnas wild type dgcr escs failed silence self renewal medium regained ability silence self renewal upon addition serum findings reveal significant differences expression function mirnas serum cultured escs copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
aim investigate characterise inborn error metabolism dog skeletal ocular abnormalities methods year old small male miniature poodle like dog presented gross joint laxity bilateral corneal opacities clinical examination augmented routine haematology serum chemistry radiographs pathology enzymology molecular genetic studies euthanasia requested dog years age progressively decreasing quality life results radiology revealed generalised epiphyseal dysplasia malformed vertebral bodies luxation subluxation appendicular lumbosacral joints hypoplasia odontoid process hyoid apparatus clinical radiographic findings together positive urinary berry spot test mucopolysaccharides metachromatic granules leucocytes indicative mucopolysaccharidosis mps lysosomal storage disease histological lesions included vacuolation stromal cells cornea fibroblasts chondrocytes macrophages renal cells brain essentially normal except moderate secondary wallerian type degeneration motor sensory tracts hind brain dermatan sulphateuria present enzymology revealed negligible activity acetylgalactosamine sulphatase also known arylsulphatase cultured fibroblasts liver tissue novel homozygous base pair deletion exon enzyme gene identified del caused frame shift subsequent premature stop codon wisdom pure breed mixed breed test reported dog cross miniature toy poodle conclusions clinicopathological features similar mps type previously described dogs cats species clinical diagnosis confirmed enzymology molecular genetic studies autosomal recessively inherited lysosomal storage disease clinical relevance prevalence mps miniature toy poodles new zealand elsewhere currently unknown due congenital nature disorder malformed pups may subject euthanasia without investigation potential genetic problem breed may fully recognised establishment molecular genetic test permits screening mutation basis informed breeding policy
regenerative medicine holds great promise treatment degenerative retinal disorders kruppel like factors klfs transcription factors recently emerged key tools regenerative medicine function epigenetic reprogrammers stem cell biology show klf one least understood members family pouf independent transcription factor retinal ganglion cells rgcs early embryonic day overexpressed klf inhibits rgc neurite outgrowth enhances rgc growth cone collapse response exogenous ephrina ligands ephrin eph signaling regulates rgc connectivity epha promoter contains multiple rich klf binding sites shown chip assays bind klf vivo electrophoretic mobility shift assays klf binds specifically single klf site near epha transcription start site required klf transactivation interestingly methylation six cpg dinucleotides within epha promoter blocks transactivation klf enables transactivation klf klf data demonstrate role klf regulation rgc neurite outgrowth methylation sensitive transcriptional regulator epha expression together data identify differential low level methylation novel mechanism regulating klf mediated epha expression across retina critical role ephrin eph signaling patterning rgc connectivity understanding role klfs regulating neurite outgrowth eph receptor expression vital successful restoration functional vision optic nerve regenerative therapies
caspian horse rare horse breed found louise firouz northern iran small horse reported danger extinction original homeland seems great need prevent extinction valuable horse study fibroblast cell lines caspian horse ear marginal tissue successfully established sampling horses using primary explant technique cells authenticated growth curve plotted according results obtained population doubling time pdt calculated cell lines multiplex polymerase chain reaction multiplex pcr revealed cell lines cross contamination species bacteria fungi mycoplasma contamination checked using standard methods pcr direct culture hoechst staining addition providing valuable source genomic postgenomic somatic cloning researches established cell lines would preserve caspian horse genetic resources also create accessible database researchers
objective authors obtain multilineage differentiating stress enduring cells muse cells primary cultures dermal fibroblasts identify pluripotency detect ability differentiate melanocytes distribution ssea positive cells human scalp skin assessed immunohistochemistry distribution oct sox nanog ssea positive cells determined immunofluorescence staining expression levels sox oct hklf nanog mrnas proteins muse cells determined reverse transcription polymerase chain reaction pcr analyses western blots respectively muse cells differentiated melanocytes differentiation medium ssea positive cells scattered basement membrane zone dermis comparatively sebaceous glands vascular sweat glands well outer root sheath hair follicles dermal papillae hair bulbs muse cells ability self renew obtained scalp dermal fibroblasts flow cytometry sorting anti ssea antibody results pcr western blot immunofluorescence staining showed expression levels oct nanog sox klf mrnas proteins muse cells significantly different parental dermal fibroblasts muse cells differentiated melanocytes cultured melanocyte differentiation medium muse cell derived melanocytes expressed melanocyte specific marker hmb muse cells could obtained flow cytometry primary cultures scalp dermal fibroblasts possessed ability pluripotency self renewal could differentiate melanocytes vitro
background polymorphism rnf susceptibility variant moyamoya disease mmd may associated non mmd intracranial artery steno occlusive disease non mmd type nonmmd icad asian investigated whether polymorphism rnf affect development non mmd icad koreans compared mmd control group methods included patients non mmd icad patients mmd participants control group polymorphism rnf evaluated polymerase chain reaction amplification target detection restriction fragment length polymorphism analysis clinical phenotype compared patients without polymorphism non mmd icad mmd results polymorphism rnf significantly associated non mmd icad odds ratio confidence interval mmd odds ratio confidence interval rate hypertension frequent mmd polymorphism mmd without polymorphism conclusions polymorphism rnf highly associated mmd also non mmd icad koreans also study suggests polymorphism rnf may linked hypertension mmd studies needed clarify relationship polymorphism rnf hypertension patients mmd elsevier rights reserved
neoantigen patient specific tumor antigen resulted mutations oncogenesis emerging data suggested immune responsiveness neoantigens correlated success clinical tumor immunotherapies nowadays majority studies neoantigens focused mhc class restricted antigens recognized cells improved understanding underlying principles tumor biology immunology increasing emphasis put cells mhc class restricted antigens mhc class restricted neoantigen potential promising target tumor immunotherapy although limited comprehension technical difficulties need overcome applied clinical practice review discussed immunologic mechanism screening technique clinical application limitations prospectives mhc class restricted neoantigens tumor immunotherapy elsevier rights reserved
thirty years ago studies rna genome tobacco etch virus revealed presence efficient specific protease called tobacco etch virus protease tevp part nuclear inclusion nia enzyme tevp efficient specific protease kda become valuable biotechnological tool nowadays tevp unique endopeptidase largely exploited biotechnology industrial applications vitro vivo cellular studies number tevp mutants different rate cleavage stability specificity reported similarly panel different target cleavage sites derived canonical enlyfq site established review describe aspects tevp multiple applications particular focus use molecular biology tevp living cells organisms elsevier rights reserved
aims study gene encodes carboxylesterase carb penicillium expansum cloned sequenced overexpressed penicillium griseoroseum enzyme characterized methods results recombinant strain griseoroseum obtained upon transformation using plasmid pan carb showed integration carb gene least two heterologous sites genome southern blotting furthermore recombinant strain exhibited almost fourfold increase carboxylesterase activity compared strain cultured without inducers based secondary structure multiple sequence alignments carboxylesterases cholinesterase lipase three dimensional model obtained barrel topology typical esterases lipases indicated carb protein ser glu putative catalytic triad carb preferentially hydrolysed acyl chains eight carbon atoms activity optimal center dot temperature degrees carb exhibited stability alkaline high activity mesophilic conditions stability organic solvents conclusion carb protein potentially useful bioremediation food chemical pharmaceutical industries significance impact study study first report development recombinant strain superproducing penicillium carboxylesterase
ppase gene tsvp thellungiella halophila transferred two cotton gossypium hirsutum varieties lumianyan lumianyan southern northern blotting analysis showed foreign gene integrated cotton genome expressed measurement isolated vacuolar membrane vesicles demonstrated transgenic plants higher ppase activity compared wild type plants overexpressing tsvp cotton improved shoot root growth transgenic plants much resistant osmotic drought stress drought stress conditions transgenic plants higher chlorophyll content improved photosynthesis higher relative water content leaves less cell membrane damage ascribe properties improved root development lower solute potential resulting higher solute content soluble sugars free amino acids transgenic plants study average seed cotton yields transgenic plants lumianyan lumianyan significantly increased compared exposing drought stress days flowering stage average seed cotton yields higher counterparts respectively study benefits efforts improve cotton yields arid semiarid regions
ability engineer cells express protein interest inducible manner stably long period valuable tool molecular biology also one holds promise regenerative medicine future ccn proteins suggested involved tissue regeneration chapter describe vitro method stable inducible expression ccn protein chondroprogenitor cell line chondrocytes primary culture involve use viral vector
drug release belongs challenging aspects nanoparticles addressing molecular biology medicine besides targeted delivery obvious challenges related high drug load continuous slow drug release based recently developed concept inorganic organic hybrid nanoparticles ioh present zro aap ioh nps containing analgetic phosphate prodrug acetaminophen phosphate drug release zro aap combines uncomplex synthesis water high prodrug load zro aap nanoparticles exhibit diameter readily obtained colloidally highly stable suspension water chemical composition studied detail based infrared spectroscopy energy dispersive ray analysis thermogravimetry elemental analysis moreover release acetaminophen zro aap studied means model experiments indicating carbon content nanoparticles alternative fluorescence labeled nanoparticles data show continuous release analgetic acetaminophen time scale elsevier inc rights reserved
midkine unique growth differentiation factor modulates proliferation migration various cells however little known regarding relationship intestinal diseases aim study investigate expression role dextran sulfate sodium dss induced colitis rats expressions receptor like protein tyrosine phosphatase rptp beta proinflammatory cytokines examined rat colonic tissues development dss induced colitis using northern blotting immunohistochemistry laser capture microdissection lcm coupled pcr effects migration intestinal epithelial cells iec also evaluated vitro using intestinal wound repair model expression significantly increased damaged colonic mucosa mainly day day end dss administration abundant immunoreactive signals detected submucosal fibroblasts expressions proinflammatory cytokines strongly induced day preceded augmentation expression results lcm coupled pcr clearly indicated rptp beta expression colonic epithelial cells migration assay showed wound repair treated groups accelerated dose dependently present results showed first time intestinal inflammation upregulates rptp beta system may stimulate mucosal regeneration process healing colitis additional investigations regarding role may contribute development new options treatment inflammatory bowel diseases
development neural crest cells induced signaling events neural plate border vertebrate embryos initially arising within central nervous system cells subsequently undergo epithelial mesenchymal transition migrate periphery differentiate diverse cell types provide evidence postnatal human epidermal keratinocytes response fibroblast growth factor insulin like growth factor signals reprogrammed toward fate genome wide transcriptome analyses show keratinocyte derived cells similar derived human embryonic stem cells moreover give rise vitro vivo derivatives peripheral neurons melanocytes schwann cells mesenchymal cells osteocytes chondrocytes adipocytes smooth muscle cells demonstrating human keratin form cells even clones single cells results important implications stem cell biology regenerative medicine stem cells
aim study examine relation additional chromosomal aberrations acas major molecular response mmr bcr abl kinase domain mutations long term follow chronic myeloid leukemia cml disease study design cross sectional observational used cml patients data izmir ataturk education research hospital conventional cytogenetic fluorescence situ hybridization fish quantitative real time polymerase chain reaction pcr test results cml patients pyrosequencing analysis results patients set comparison analysis chi square test used statistical analysis experimental data statistically significant correlations acas mmr groups bcr abl mutations groups observed study study revealed mmr bcr abl mutations correlate acas
article discuss methods soil enzymatic analysis pedo enzymes used specialized laboratories recent years determine potential various biochemical processes asess track soil fertility initially general biochemical methods used purpose methods rogers measuring phosphatase activity kuprevici assesing urease activity method hofmann seegerer quantifying sucrase activity methods relied introducing specific enzyme substrate mixture beta glycerophosphate urea sucrose determining quantitative enzyme products phosphate ions glucose ammonium ions respectively biochemistry results enzyme tests expressed international units enzyme found sample analyzed material agricultural point view measurement naturally occuring enzyme substrates useful pedo enzymology focused assessing level hydrolase processes unfold thus providing nutrients plants consequently stefanic stefanic irimescu stefanic stefanic gheorghita recommended new methods analysis determining level total phosphatasic activity total amidasic activity markers soil fertility status
parasite species often show differential fitness different host species developed equation based model explore conditions favouring host species exploitation discrimination ourmodel diploid infective stages randomly encountered hosts two species parasite relative fitness exploiting host species ability discriminate determined parasite genotype two independent diallelic loci relative host species frequency determined allele frequencies exploitation locus whereas differential fitness combined host density determined frequency discrimination alleles model predicts instances populations contain mixes discriminatory non discriminatory infective stages also non discriminatory parasites evolve differential fitness low moderate combined host densities low lowas cause parasite extinction corollary parasite discrimination host specificity increases higher combined host densities instances nature parasites fail discriminate differential fitness extreme could explained one host species evolving resistance following earlier selection parasite non discrimination similar results overall obtained haploid extensions model model emulates multi host associations implications understanding broadening host species ranges parasites article part themed issue opening black box examining ecology evolution parasite transmission
tuberculosis still serious public health problem various countries one long elusive critical questions risk factors contribute seasonality ecologic study conducted examine association variation outdoor concentration seasonality based monthly notification concentration data hong kong beijing descriptive analysis poisson regression analysis suggested outdoor concentration could potential risk factor seasonality disease significant relationship number cases concentration changed regression models adjusted sunshine duration potential confounder regression analysis showed increase concentrations winter significantly associated cases beijing hong kong respectively increase number cases notified coming spring summer beijing hong kong three potential mechanisms proposed explain significant relationship increased exposure increases host susceptibility disease impairing modifying immunology human respiratory system increased indoor activities high outdoor episodes leads increase human contact thus risk transmission seasonal change concentration correlated variation potential risk factors seasonality preliminary evidence analysis work favors first mechanism exposure induced immunity impairment work adds new horizons explanation seasonality improves understanding potential mechanisms affecting incidence benefits prevention control disease elsevier ltd rights reserved
kisspeptins protein coupled receptor gpr play significant roles regulating reproductive activity among seasonally reproductive animals however mechanisms kiss gpr gene affecting seasonal reproduction striped hamster still unknown study real time quantitative polymerase chain reaction employed examine expression profiles kiss gpr hypothalamus ovaries testes uterus epididymis striped hamsters across different seasons results showed across different seasons kiss expression mode male striped hamsters gpr expression mode female striped hamsters consistent seasonal photoperiod hypothalamus meanwhile across different seasons expression profile kiss testes gpr expression profile male striped hamsters hypothalamus consistent intensity seasonal reproductive activity among different tissues expression trend gpr consistent across seasons kiss tissue dependent expression trend gpr across seasons regardless gender kiss dramatically different sex dependent across different seasons results suggest expressions kiss gpr striped hamsters regulated complicated mechanisms regulatory mechanisms striped hamsters seasonal dependent sex dependent research provide theoretical basis studying kiss gpr affect seasonal reproduction mechanisms behind influence
according world health organization registered cases dengue americas recently aedes aegypti related dengue also cases zika virus chikungunya due epidemiological importance study characterized morphology embryonated eggs aegypti provided protocol culture stem cells eggs digestive tract fourth instar larvae order examine cell biology expression markers vectors cells isolated cultured dmem high degrees morphology cell cycle immunophenotyping examined morphologically embryos end embryonic period showed head thorax abdomen eight abdominal segments embryonic tissues expressed markers related cell proliferation pcna pluripotency sox oct neural cells nestin mesenchymal cells vimentin stro endosomal cells rab culture cells tissues eggs larvae gut composed heterogeneous population cells globoid shape small size cell cycle analysis passage showed cell debris cells phase phase phase addition cells passage showed cell debris cells phase phase phase embryonated eggs expressed markers involved pluripotency sox oct mesenchymal cells vimentin stro neural cells nestin cellular death apoptosis caspase specific endosomal markers insect cells rab also highly expressed cell culture aegypti larvae gut labeling pattern observed small decrease expression mesenchymal vimentin stro neural nestin markers summary able establish protocol culture embryonated eggs larvae gut aegypti describing characteristics undifferentiated cells well cell cycle expression markers used biotechnology studies biological control vector elsevier ltd rights reserved
parasites significant groups carcinogenesis among liver flukes including opisthorchis viverrini clonorchis sinensis typical representatives causing cholangiocarcinoma cca second common primary hepatic malignancy dismal prognosis viverrini prevalent southeast asia infecting million people sinensis wider distribution east asia several southeast asian countries affecting million people health two worms common characteristics discrepancies life cycle genome transcriptome hot spots recent years genome transcriptome research extracted numerous novel fluke worm derived proteins excellent carcinogenic exploration however handful studies focused metabolic pathway study main mechanisms carcinogenesis worms terms mechanical damage metabolic products immunopathology possible pathways discussed detail review retrospectively describes main traits sinensis viverrini molecular biology core carcinogenic mechanisms contrast pattern
understanding molecular evolution genes underlie intraspecific polymorphisms provide insights process adaptive evolution adaptive polymorphisms characterized gene presence absence variation underlying loci commonly show signatures long term balancing selection gene presence gene absence alleles maintained two divergent lineages examined molecular evolution two unlinked polymorphisms underlie well documented adaptive polymorphism cyanogenesis hydrogen cyanide release tissue damage white clover cyanogenic acyanogenic plants occur species ecological forces maintain chemical defence polymorphism studied several decades using sample plants investigated molecular evolution sequences flanking two underlying cyanogenesis genes controlling presence absence cyanogenic glucosides controlling presence absence hydrolysing enzyme linamarase combination genome walking pcr assays dna sequence analysis southern blotting used test whether adaptive polymorphisms show evidence long term balancing selection whether gene absence alleles evolved repeatedly independent deletion events loci detect signatures balancing selection closest flanking genomic sequences instead find evidence variation size deletions characterizing gene absence alleles observations strongly suggest polymorphisms evolving recurrent gene deletions time discuss genetic mechanisms could account surprising pattern implications findings mechanisms rapid adaptive evolution white clover
omacetaxine mepesuccinate hereafter referred omacetaxine protein translation inhibitor approved food drug administration adult patients chronic myeloid leukemia resistance intolerance two tyrosine kinase inhibitors objective investigate metabolite profile omacetaxine plasma urine faeces samples collected single subcutaneous dose omacetaxine cancer patients high performance liquid chromatography mass spectrometry high resolution combination line radioactivity detection used metabolite identification total six metabolites omacetaxine detected reactions represented mepesuccinate ester hydrolysis methyl ester hydrolysis pyrocatechol conversion dioxole ring unchanged omacetaxine prominent omacetaxine related compound plasma urine unchanged omacetaxine also dominant together dmhht feces little unchanged omacetaxine found pyrocatechol metabolite omacetaxine desmethyl homoharringtonine dmhht abundant metabolites omacetaxine extensively metabolized subsequent renal hepatic elimination metabolites low levels metabolites found plasma indicate metabolites unlikely contribute materially efficacy toxicity omacetaxine
throughout life animals progressively accumulate mostly detrimental changes cells tissues functions causing decrease individual performance ultimately increased risk death latter may amplified also leads deterioration immune system forms important protection permanent threat pathogens infectious diseases investigated four baseline innate immune parameters natural antibodies complement activity concentrations haptoglobin concentrations nitric oxide changed age free living great tits parus major applied cross sectional longitudinal approaches birds sampled three years lives three four selected innate immune parameters affected age however shape response curves differed strongly among innate immune parameters natural antibody levels increased early life mid age decrease thereafter birds aged complement activity highest young birds levels slightly decreased increasing age haptoglobin levels hand showed linear highly variable increase age nitric oxide concentrations unaffected age observed differences among four studied innate immune traits indicate importance considering several immune traits time also highlight complexity innate immunity unraveling functional significance observed changes innate immunity thus challenging next step elsevier inc rights reserved
quantification drug metabolites produced drug metabolism growing concern pharmaceutical industry regulatory agencies food drug administration european medicines agency others drugs known reactive metabolites black box warnings major cause drug induced injury lead drug attrition early late clinical stages according survey report pharmaceutical companies drug induced liver injury ranked first terms adverse events remains common reason restriction withdrawal drug market food drug administration although many reasons underlying drug induced liver injury one important liver failure induced drug metabolites generally drug produces metabolites may bind cellular molecules trigger toxicological effect cause serious adverse drug reactions alter cellular functions experimental cellular models attempt qualify drug metabolites cell cultures rely human plasma urine obtained clinical trials supernatant early vitro experiments however lack information quantification drug metabolites inside human hepatocytes drug extensively metabolized overcome limitation used highly accepted gold standard organotypic cellular model primary human hepatocytes investigate quantify parent drug well drug metabolites inside human hepatocytes outside human hepatocytes evaluate quantity drug metabolites assumed remained inside primary human hepatocytes refer two compartment model one compartment supernatant compared vivo hepatic blood circulation inside hepatocyte cell compared inside vivo human liver detected nanoconcentrations major metabolites desmethyldiazepam temazepam oxazepam diazepam drug inside cells matrix outside hepatocyte cells supernatant different time points primary human hepatocytes hours primary porcine hepatocytes hours biotransformation organotypic sandwich cellular model although difficult detect tissue distribution metabolites humans strongly recommend testing two compartment model primary human hepatocytes nonhuman models may reflect human metabolism preclinical drug screening assessment tests use two compartment strategy may facilitate safer registration new drug candidates
molecular pathogenesis papillary thyroid carcinoma ptc largely associated mutational changes braf ras family ret genes aim assess clinico pathological prognostic correlations ptc specific gene alterations particular emphasis braf mutation group serbian ptc patients first time reference center based retrospective cohort included females males aged years years old range diagnosed treated ptc follow period months months range braf ras mutations determined direct sequencing genomic dna ret ptc rearrangements analyzed pcr southern blotting genetic alterations detected tumors one tumor displayed two genetic alterations braf found cases ras mutations ret ptc ret ptc ret ptc multivariate analysis braf associated classical papillary morphology higher category advanced clinical stage proportional hazard model braf appear independent risk factor faster recurrence conclude extensive thyroid surgery limited application radioiodine ablation braf may indicator poorer disease free survival short middle follow period however potential contribute patients stratification high low risk groups
transformation pokeweed antiviral protein gene pap plants shown improve plant resistance several viruses fungi pathogens much negative effect plant growth non virulent defective pap inhibits virus interfere host non virulent defective pap gene pacpap phytolacca acinosa introduced cucumber successfully agrobacterium mediated method southern blotting northern blotting analyses indicated stable transgenic cucumber lines pacpap obtained pacpap showed different expression levels transgenic plants identification resistances disease performed artificial inoculation cucumber mosaic virus cmv fusarium oxysporum fsp cucumerinum transgenic plants compared non transgenic susceptible plants transgenic plants pacpap showed resistance different degree cmv cmv resistance progeny transgenic lines could inherit stably transgenic plants resist fusarium wilt cucumber pacpap resistant fusarium oxysporum fsp cucumerinum work provides new virus resistant cucumber breeding resource
background aims nonalcoholic fatty liver disease nafld develops complex process includes changes liver methylome betaine plays pivotal role regulation methylogenesis performed two stage case control study included patients biopsy proven nafld explore circulating levels betaine association histological spectrum also explored association missense serpro variant dmgdh dimethylglycine dehydrogenase mitochondrial nafld severity results discovery phase betaine levels associated disease severity including liver inflammation spearman ballooning degeneration fibrosis betaine levels significantly decreased nonalcoholic steatohepatitis nash comparison nonalcoholic fatty liver nafl replication showed betaine levels associated advanced nafld patients nash fold decrease betaine levels compared nafl significantly associated disease severity conclusion nafld severity associated state betaine insufficiency
recent reviews pinpointed enormous diversity proteins found living organisms especially higher eukaryotes protein diversity driven three main processes first deoxyribonucleic acid dna level gene polymorphisms second precursor messenger ribonucleic acid pre mrna messenger ribonucleic acid mrna level alternative splicing also termed differential splicing finally protein level ptm current proteomic technologies allow identification characterization quantitation several thousands proteins single experiment nevertheless identification characterization protein species using technologies still hampered review use terms protein species protein isoform evidence appropriate selection database used searches impede facilitate identification protein species also describe examples protein identification search engines systematically fail attribution protein species briefly review characterization protein species using proteomic technologies including gel based gel free bottom top analysis discuss limitations example discuss theoretical characterization two human choline kinase species alpha alpha sharing catalytic activity generated alternative splicing chka gene
flow cytometry become basic biological research clinical diagnostics application crucial numerous advances immunology cell biology however several issues remain considering intracellular stainings especially context daily routine use multicenter clinical research protocols including large cohorts patients requirements multiple protocol steps time consuming also frequently associated high cell loss nonspecific binding reduced fluorescence drawbacks make standardized intracellular flow cytometry use multicenter studies struggling consequence intracellular flow cytometry mostly remained tool experimental clinical research current chapter complete flow cytometry protocols described previous edition presenting novel intracellular protocols usable clinic present many advantages including shorter time results one step whole blood procedures lyse wash centrifuge protocols improved staining quality lyophilized coated reagents ready use tubes opens novel perspectives standardization feasibility clinical studies drug efficacy monitoring patients stratification within context personalized medicine present illustrative examples taken septic patients immunomonitoring consider evaluation myeloperoxidase lactoferrin expressions neutrophils foxp lymphocyte expression stat phosphorylation lymphocyte subsets
twenty years initial description tissue engineered construct dimensional human cardiac tissues different kinds generated routinely many laboratories advances stem cell biology engineering allow generation constructs come close recapitulating complex structure heart muscle might therefore amenable industrial drug screening clinical cardiac repair applications whether physiological structure dimensional constructs provides relevant advantage standard dimensional cell culture yet shown head head comparisons present article gives overview current strategies cardiac tissue engineering focus different hydrogel methods discusses perspectives challenges necessary steps toward real life application cardiac tissue engineering disease modeling drug development cardiac repair
serrated polyps long thought lack malignant potential human colorectum however identification serrated pathway colorectal cancer based molecular biology improved understanding pathogenesis colorectal cancers accordingly serrated polyps traditional serrated adenoma sessile serrated adenoma polyps ssa considered precursor lesions serrated pathway recently serrated polyps classified three subtypes consisting hyperplastic polyp ssa traditional serrated adenoma according world health organization classification suggested ssa proximal colon precursor lesion pathogenesis colorectal cancer characterized braf mutation cpg island methylator phenotype without microsatellite instability however ssa challenging detect colonoscopy likely account interval cancers particularly proximal colon presents flat sessile isochroous appearance occasionally mucous cap furthermore possibility raised pathologists misclassify ssa hyperplastic polyp important gastroenterologists recognize endoscopic features serrated polyps facilitate detection removal also establish postpolypectomy surveillance guidelines review discuss recent classification serrated polyps molecular characteristics serrated pathway appropriate diagnostic methods using endoscopy including new image enhanced endoscopic technique management lesions
view prevailed cancer primarily caused synthetic substances environment especially food even low concentrations substances recognized carcinogenic high dose feeding studies avoided foodstuffs threshold concept carcinogens became dogma meantime high dose animal feeding studies shown half tested natural substances carcinogens due improved analytical methods ever carcinogens detected food lately acrylamide nowadays search anticarcinogenic food constituents interesting research screening yet another carcinogen die cancer youth although continually exposed potentially carcinogenic compounds predominantly natural origin largely produced normal human metabolism recently threshold doses shown unequivocally exist genotoxic carcinogens
background klebsiella pneumoniae carbapenemase kpc producing escherichia coli reported china since however information molecular epidemiology kpc producing coli china study aimed investigate sequence type characteristics kpc producing coli isolates china methods three carbapenem resistant isolates coli one teaching hospital hangzhou covering one year period analyzed antibiotic susceptibility determined etest pulsed field gel electrophoresis pfge multilocus sequence typing mlst used epidemiological analysis genetic structure around bla kpc major plasmid incompatibility typing identification beta lactamase gene types performed pcr positive products subsequently sequenced plasmids analyzed transformation restriction southern blotting results pfge demonstrated patterns isolates clonally related designated patterns pattern isolate different designated pattern mlst analysis showed three isolates displayed one common sequence type identification bla gene types pcr sequencing showed bla kpc bla ctx bla tem detected three isolates three isolates carried kpc encoding plasmid incn replicon plasmid analysis hybridization experiments showed isolates found simultaneously carry two four plasmids bla kpc gene located plasmid size however bla kpc gene located plasmid size conclusions coli kpc beta lactamase emerged china enlarges geographical area kpc producing coli strains diffused
membrane anchored myelin enzyme cyclic nucleotide phosphodiesterase cnpase discovered early since troubled scientists peculiar catalytic activity high expression levels central nervous system despite decades research actual physiological relevance cnpase recently begun unravel addition role myelination cnpase also involved local adenosine production traumatic brain injury possibly regulatory function mitochondrial membrane permeabilization although research focusing cnpase phosphodiesterase activity helpful several open questions concerning protein function vivo remain unanswered review focused past research cnpase especially fields structural biology enzymology outlines current understanding regarding biochemical physiological significance cnpase providing ideas directions future research
stromal derived factor alpha sdf alpha cxc chemokine demonstrated recruitment factor leukocytes site inflammation infection injury following stress chemokine shown expressed liver cells liver diseases hence aim study examine expression sdf hepatocytes responses stress imposed isolation collagenase perfusion heat shock stimulation study hepatocytes isolated male sprague dawley rat liver cultured plates pre coated collagen type matrix western northern blotting analysis employed detect sdf protein mrna levels isolated cultured hepatocytes response isolation heat shock stresses sdf expressed isolated rat hepatocytes immediately isolation early culture decreased time sdf protein highly expressed freshly isolated cells decreased time mrna also expressed freshly isolated cells decreased culture results also demonstrated expression sdf hepatocytes increased response heat shock different time points comparing control results demonstrated isolation heat shock stresses induced expression sdf hepatocytes time dependent manner accordingly seems hepatocytes mimic experiences fiver experience injury vivo therefore produce stress related agents like chemokines overcome injurious condition
long range electrostatic forces play important role molecular biology particularly macromolecular interactions however calculating electrostatic forces irregularly shaped molecules immersed water difficult task report new tool delphiforce tool delphi package calculates visualizes electrostatic forces biomolecular systems parallel delphi algorithm modeling electrostatic potential user defined positions enhanced include triquadratic tricubic interpolation methods tricubic interpolation method tested analytical solutions demonstrated corresponding errors negligibly small resolution grids angstrom delphiforce applied study forces acting partners three protein protein complexes demonstrated electrostatic forces play dual role steering binding partners partners recognize native interfaces exerting electrostatic torque mutual orientations partners native like output delphiforce format vmd read visualize provides additional options analysis protein protein binding delphiforce available download delphi webpage http compbio clemson edu downloaddir delphiforce tar wiley periodicals inc
cryptolaemus montrouzieri mealybug destroyer predatory ladybird australian origin introduced worldwide control mealybugs however simple sequence repeat ssr marker developed montrouzieri hampering study population genetics developed characterized novel ssr markers expressed sequence tags ests montrouzieri proved sufficiently polymorphic population genetic analysis results population genetic analysis using markers reveal strong genetic differentiation ten native introduced populations seen previous results using mitochondrial markers four populations probably underwent recent genetic bottleneck one wild population probably result admixture two lab reared populations results newly developed est ssr markers suggest strong genetic differentiation among populations widely introduced biological control agent greater attention paid bottleneck effects mito nuclear discordance admixture population genetic analysis prediction invasiveness practical use ladybird biological control elsevier inc rights reserved
secure functionality activated macrophages innate immune response efficient life span control required recognition bacterial lipopolysaccharides lps toll like receptor tlr induces downstream signaling pathways merge induce expression cytokine genes anti apoptotic genes micrornas mirnas emerged important inflammatory response modulators information functional impact apoptosis scarce identify mirnas differentially expressed response lps cdna libraries untreated lps activated murine macrophages analyzed deep sequencing regulated mirna expression verified northern blotting qpcr employing targetscan identified caspase casp mrna encodes key player apoptosis potential target lps induced mir lps dependent primary macrophage activation revealed tlr mediated enhancement mir expression casp mrna reduction endogenous casp cleaved casp protein declined lps activated macrophages accumulation mir casp mrna mirna induced silencing complexes mirisc demonstrated argonaute ago immunoprecipitation importantly specific antagomir transfection effectively reduced mature mir resulted significantly elevated casp mrna levels activated macrophages vitro translation assays demonstrated target site casp mrna utr mediates mir dependent luciferase reporter mrna destabilization strikingly annexin staining macrophages transfected antagomir stimulated lps prior staurosporine ssp treatment implied lps induced mir prevents apoptosis casp mrna regulation conclusion report mir mediated casp mrna destabilization lps activated raw macrophages suppresses apoptosis prerequisite maintain crucial function inflammation
human gamma delta cells comprise first line defense cell receptor tcr recognition stressed cells however molecular determinants stress pathways involved recognition largely unknown show exposure tumor cells various stress situations led tumor cell recognition tcr using strategy previously developed identify antigenic ligands gamma delta tcrs annexin identified direct ligand tcr found expressed tumor cells upon stress situations tested reactive oxygen species dependent manner moreover purified annexin able stimulate proliferation vdneg gamma delta cell subset within peripheral blood mononuclear cells annexin specific vdneg gamma delta cell clones could derived peripheral blood mononuclear cells thus propose membrane exposure annexin oxidative stress signal vdneg gamma delta cells could involved adaptive stress surveillance
estimated billion people infected soil transmitted helminths sths globally majority occurring tropical subtropical regions world roundworm ascaris lumbricoides whipworm trichuris trichiura hookworms ancylostoma duodenale necator americanus main species infecting people infections mostly gained exposure faecally contaminated water soil contaminated food increase risk infections due wastewater sludge reuse agriculture different methods developed detection quantification sths eggs environmental samples however lack universally accepted technique creates challenge comparative assessments helminths egg concentrations different samples matrices well locations review presents comparison reported methodologies detection sths eggs assessment relative performance available detection methods discussion new emerging techniques could applied detection quantification based literature search using pubmed science direct considering geographical locations original research articles selected based methodology results sections methods reported articles grouped conventional molecular emerging techniques main steps method compared discussed inclusion dissociation step aimed detaching helminth eggs particulate matter found improve recovery eggs additionally selection application flotation solutions take account relative densities eggs different species sths also results higher egg recovery generally use conventional methods shown laborious time consuming prone human error alternate use nucleic acid based techniques improved sensitivity detection made species specific identification possible however nucleic acid based methods expensive less suitable regions limited resources skill loop mediated isothermal amplification method shows promise application settings due simplicity use basic equipment addition development imaging soft ware detection quantification sths shows promise reduce human error associated analysis environmental samples may concluded need comparatively assess performance different methods determine applicability different settings well use different sample matrices wastewater sludge compost soil vegetables etc authors published elsevier
cancer testis antigens promising targets immunotherapy due restricted expression germ cells testis healthy tissue high immunogenicity aim present study determine whether transmembrane protein tmem antigen investigate pattern tmem expression progression melanoma pattern expression human tmem mrna multiple human tissues determined reverse transcription polymerase chain reaction analysis tmem protein expression analyzed human testis addition primary melanoma metastatic melanoma samples immunohistochemistry analysis tmem identified predominantly expressed testis weakly expressed placenta addition tmem protein expression detected melanoma samples primary metastatic intensity tmem staining metastatic primary melanomas determined semiquantitative integrated optical density iod analysis identified significantly increased metastatic melanoma compared primary melanoma iod area expression tmem protein significantly increased metastatic compared primary melanoma samples results present study suggest tmem novel antigen serves essential role melanoma metastasis addition potential immunotherapeutic target treatment patients melanoma
article describes detail methodical procedures isolation small rna molecules electrophoresis northern blotting finally detection hybridization radioactively labeled riboprobes presented protocols successfully introduced used laboratory
objective describe evolution serological markers among hiv hepatitis coinfected patients emphasis evaluating reactivation seroreversion markers methods study population consisted patients met aids outpatient clinic sao paulo state brazil included analysis hiv infected underwent least two positive hepatitis surface antigen serological testing clinical follow tests taken six months apart patients tested commercial kits available hepatitis serological markers microparticle enzyme immunoassay clinical variables collected age sex cell count hiv viral load alanine aminotransferase level exposure antiretroviral drugs including lamivudine tenofovir results among hiv positive patients identified patients chronic hepatitis follow time patients varied six months years patients underwent antiretroviral therapy follow among patients chronic hepatitis hepatitis antigen positive first assessment clearance hepatitis surface antigen occurred patients chronic hepatitis patients presented subsequent reactivation seroreversion hepatitis surface antigen among hepatitis antigen positive patients presented clearance serologic marker clinical follow initially cleared hepatitis antigen presented seroreversion reactivation marker conclusions among hiv coinfected patients antiretroviral therapy changes hbv serological markers frequently observed results suggest frequent monitoring serum markers recommended
toxocariasis important neglected zoonosis caused mainly toxocara canis although knowledge helminth molecular biology improving completed draft genome projects limited detailed information molecular biology toxocara species transcriptomic sequencing male female adult canis comparative analyses conducted sex two thirds quality filtered reads mapped gene set canis least five reads mapped genes genes specifically transcribed female male canis genes differentially transcribed two sexes identified enriched biological processes pathways linked genes established molecules associated reproduction development predicted addition small rna pathways involved reproduction characterized evidence piwi rna pathways adult canis results transcriptomic study provide useful basis support investigations reproductive biology canis related nematodes elsevier rights reserved
review explore similarities spinocerebellar ataxias dystonias suggest potentially shared molecular pathways using gene expression network approach spinocerebellar ataxias group neurodegenerative disorders characterized coordination problems caused mainly atrophy cerebellum dystonias another group neurological movement disorders linked basal ganglia dysfunction although evidence pointing cerebellar involvement well gene expression network approach identified shared genes showed involvement two major pathways synaptic transmission neurodevelopment pathways overlapped two disorders large role gabaergic signaling overlapping pathways may provide novel targets disease therapies need prioritize variants obtained whole exome sequencing genes associated pathways search new pathogenic variants used help genetic counseling patients families elsevier ltd rights reserved
aimsthe aim study investigate potential molecular mechanisms associated loss brm expression poorly differentiated clear cell renal cell carcinoma ccrcc methods resultsnineteen previously selected brm negative rcc tissues examined dna sequencing fluorescence situ hybridization fish methylation specific polymerase chain reaction pcr brm gene brm mutation identified cases chromosome monosomy brm deletion seven brm promoter region cytosine phosphate guanine cpg methylation six results indicated cases harboured least one type brm genetic alteration two types alteration nine alterations found rarely adjacent non neoplastic tissues low grade areas composite tumours conclusionsbrm gene mutation chromosome monosomy brm deletion cpg methylation contribute collectively loss brm expression ccrcc work focusing composite tumours indicated brm abnormality occurred tumour progression
cell physiology impaired protein aggregation may relevant inclusions neurodegeneration present study aimed characterize animal model enable analysis cell biology protein aggregation ten month old lewis rats exposed either day rotenone delivered subcutaneously mini pumps one month hyperphosphorylated tau alpha synuclein amyloid beta peptide protein carbonylation indicative oxidative stress evaluated hippocampus substantia nigra locus coeruleus immunohistochemistry western blot found day rotenone increased amyloid beta peptide hyperphosphorytation tau alpha synuclein rotenone day alter protein levels protein carbonylation remained unchanged study demonstrated aged lewis rats exposed low dose rotenone useful model study cellular processes protein aggregation higher dose makes good model study effects protein inclusions
global demand macroalgal microalgal foods growing algae increasingly consumed functional benefits beyond traditional considerations nutrition health substantial evidence health benefits algal derived food products remain considerable challenges quantifying benefits well possible adverse effects first limited understanding nutritional composition across algal species geographical regions seasons substantially affect dietary value second issue quantifying fractions algal foods bioavailable humans factors influence food constituents released ranging food preparation genetic differentiation gut microbiome third understanding algal nutritional functional constituents interact human metabolism superimposed considerations effects harvesting storage food processing techniques dramatically influence potential nutritive value algal derived foods highlight rapidly advancing area algal science particular focus key research required assess better health benefits alga algal product rich opportunities phycologists emerging field requiring exciting new experimental collaborative approaches
psk prototypical conjugative multiresistance plasmid staphylococcus aureus psk replication initiation protein rep rate limiting plasmid replication expression negatively regulated small non coding antisense transcript rnai complementary rep mrna leader region study enzymatic probing used verify predicted secondary structures rnai target rna demonstrated two stem loop structures rnai slrnai slrnai iii important inhibition putative turn motif detected loop slrep uugg analysed significance rnai mediated inhibition vivo northern blotting suggested rep mrna processed taken together observations support previously proposed model also raise new questions replication control mechanism elsevier inc rights reserved
third half penile invasive squamous cell carcinomas human papillomavirus hpv related warty condylomatous warty basaloid basaloid carcinomas common subtypes associated hpv less frequent clear cell lymphoepithelioma like carcinomas report novel penile tumor associated hpv twelve cases selected penile carcinomas part international hpv detection study conducted institut catala oncologia barcelona spain immunostaining inka performed cases hpv mrna detection also performed bloc full tumor staining utilized criteria positivity inka hpv dna detection wholetissue section polymerase chain reaction analysis performed spf deia lipa version patients ages ranged years average tumor commonly located glans characteristic microscopic finding presence moderate dense tumor associated inflammatory cell infiltrate composed neutrophils lymphocytes plasma cells eosinophils tumors grew large solid sheets nests trabecular pattern cells large poorly differentiated anaplastic keratinization minimal absent nuclei large prominent nucleoli mitoses numerous tumor necrosis common deep invasion corpora cavernosa frequent inka hpv dna positive cases whereas mrna detection positive cases prevalent genotype hpv cases genotypes hpvs medullary carcinomas penis morphologically distinctive hpv related high grade neoplasms affecting older individuals studies necessary delineate epidemiological clinical molecular features unusual penile neoplasm
vocalizations anuran amphibians received much attention studies behavioral ecology physiology also provide informative characters identifying delimiting species review terminology variation frog calls perspective integrative taxonomy provide hands protocols recording analyzing comparing interpreting describing sounds focus advertisement calls serve premating isolation mechanisms therefore convey important taxonomic information provide recommendations terminology frog vocalizations call note pulse fundamental subunits used descriptions comparisons however due complexity diversity signals unequivocal application terms call note challenging therefore provide two coherent concepts either follow note centered approach defining uninterrupted units sound notes entirety call call centered approach defining uninterrupted units call whenever separated long silent intervals terminology based surveys literature show numerous call traits highly variable within individuals one species despite idiosyncrasies species higher taxa duration calls notes pulse rate within notes number pulses per note appear static within individuals somewhat less affected temperature therefore variables might often preferable taxonomic characters call rate note rate heavily influenced various factors dominant frequency also comparatively static weakly affected temperature depends strongly body size taxonomic characters strong call divergence typically indicative species level differences whereas call similarities two populations evidence conspecific taxonomic conclusions especially drawn general advertisement call structure two candidate species radically different qualitative call differences thus observed hand quantitative differences call traits might substantially vary within among conspecific populations require careful evaluation analysis provide guidelines taxonomic interpretation advertisement call differences sympatric allopatric situations emphasize need integrative use multiple datasets bio acoustics morphology genetics particularly allopatric scenarios show small sized frogs often emit calls frequency components ultrasound spectrum although unlikely high frequencies biological relevance majority illustrate detection upper harmonics depends also recording distance higher frequencies attenuated strongly bioacoustics remains prime approach integrative taxonomy anurans uncertainty due possible intraspecific variation technical artifacts adequately considered acknowledged
low birth weight lbw followed accelerated postnatal growth associated increased risk developing age associated diseases type diabetes gestational protein restriction rats causes lbw beta cell dysfunction reduced longevity effects may mediated accelerated cellular aging study tested hypothesis lbw followed rapid postnatal catch growth leads islet telomere shortening alterations antioxidant defense capacity stress senescence marker proteins dna repair mechanisms gene expression level used rat model gestational protein restriction recuperated offspring control offspring southern blotting revealed shorter islet telomeres recuperated animals compared controls associated increased expression peroxiredoxin peroxiredoxin heme oxygenase regulated stress conditions mnsod expression significantly decreased recuperated offspring suggesting partial impairment mitochondrial antioxidant defenses markers cellular senescence also increased respectively recuperated group conclude maternal diet influences expression markers cellular stress telomere length pancreatic islets may provide mechanistic link early nutrition growth type diabetes tarry adkins chen smith jones cherif ozanne poor maternal nutrition followed accelerated postnatal growth leads telomere shortening increased markers cell senescence rat islets faseb
six veillonella species found human oral cavity among abundant members oral flora occurring supra subgingival dental plaque well oral mucosa epidemiological data also implicated species development common oral diseases despite ubiquity abundance ecological significance surprisingly little known veillonella biology largely due difficulties associated genetic manipulation effort improve genetic analyses veillonella species isolated collection veillonellae clinical plaque samples screened natural competence using newly developed transformation protocol numerous strains parvula found exhibit natural competence ability highly influenced growthmedium composition exploiting ability able utilize cloning independent allelic exchange mutagenesis identify likely source dna uptake machinery within locus homologous type secretion systems tss interestingly parvula natural competence found exhibit clear hierarchy preference different sources dna plasmid pcr product genomic dna unlike naturally competent species genomic comparisons members veillonellaceae family suggest natural competence likely widely distributed within group best knowledge study first demonstration natural competence targeted allelic exchange mutagenesis within entire veillonellaceae family demonstrates simple rapid method study veillonella genetics
cdk member transcriptional subtype cyclin dependent kinases cdks family shows remarkable cancer tissue specific expression profile rather selective contribution regulation gene expression levels involved signaling pathways however effect cdk malignant phenotype human laryngeal squamous cell carcinoma lscc cells potential molecular mechanisms remain unclear present study evaluated expression levels cdk quantitative real time reverse transcriptase polymerase chain reaction qrt pcr immunohistochemistry tissue samples lscc patients analyzed correlated results clinicopathological features demonstrated cdk significantly overexpressed lscc tissues compared normal controls overexpression correlated lymph node metastasis advanced clinical stages kaplan meier analysis showed high expression levels cdk mirna significantly correlated short survival addition regulation cdk using small interfering rna sirna reduced proliferation migration lscc vitro explore potential mechanism investigated effect cdk wnt signaling pathway found cdk involved emt progress regulating beta catenin wnt signaling summary data suggest first time cdk appears contribute malignant mechanism lscc may represent significant prognostic marker lscc patients
field immune oncology rapidly progressing new data generated across research areas field american association cancer research aacr tumor immunology immunotherapy meeting sixth series provides forum researchers academia industry well clinicians present work global audience enhance understanding immune response cancer focus response used disease treatment prevention
purpose lynch syndrome accounts colorectal cancer mainly caused germline mutations dna mismatch repair genes aim characterize genetic mutation responsible lynch syndrome extensive colombian family study prevalence antioquia methods lynch syndrome family fulfilling amsterdam criteria studied immunohistochemistry multiplex ligation dependent probe amplification mlpa results confirmed additional independent mlpa southern blotting sequencing results index case tumor immunohistochemistry results mlh msh msh pms mlpa analysis detected duplication exons mlh mutation confirmed characterized precisely span base pairs duplication screening family led identification six additional carriers noncarriers also screened early onset independent colorectal cancer cases area identified additional unrelated carrier conclusion novel duplication exons mlh gene detected two independent lynch syndrome families colombia putative founder effect pre screening lynch syndrome antioquia families specific mutation thorough mismatch repair mutational screening could suggested genet med
improving accuracy phenotyping use advanced psychometric tools increase power find significant associations genetic variants expand range possible hypotheses tested genome wide scale multivariate methods structural equation modeling sem valuable phenotypic analysis psychiatric substance use phenotypes methods integrated standard genome wide association analyses fitting sem single nucleotide polymorphism snp along genome hitherto considered computationally demanding developing method efficiently fit sems possible expand set models tested particularly necessary psychiatric behavioral genetics statistical methods often handicapped phenotypes large components stochastic variance due enormous amount data genome wide scans produce statistical methods used analyze data relatively elementary directly correspond rich theoretical development lack potential test complex hypotheses measurement interaction comorbid traits paper present method test association snp multiple phenotypes latent construct genome wide basis using diagonally weighted least squares dwls estimator four common sems one factor model one factor residuals model two factor model latent growth model demonstrate dwls parameters values strongly correspond traditional full information maximum likelihood parameters values also present timing simulations power analyses comparison existing multivariate gwas software package
aim prolactinomas thought arise clonal expansion single mutated cell subjected growth stimuli several permissive factors although pathogenetic mechanisms underlying tumorigenesis remain unclear present study aimed investigate role mouse double minute mdm snpt gene polymorphisms tumorigenesis characteristics prolactinoma patients methods total patients prolactinoma age gender matched healthy individuals enrolled study serum prolactin levels measured enzyme linked immunosorbent assay elisa mdm polymorphisms determined polymerase chain reaction restriction fragment polymorphism agarose gel electrophoresis results genotype distribution found genotype distribution found mdm genotype distribution found patients prolactinoma tumor diameter treatment correlated prolactin levels treatment percentage prolactin decrease treatment significantly higher heterozygous genotype carriers odds ratio confidence interval conclusion study showed mdm polymorphisms play decisive role tumorigenesis genotypes polymorphisms might associated follow characteristics prolactinoma
little known virulence human pathogen varies environment shares vector study focused whether virulence trypanosoma cruzi trypanosomatida trypanosomatidae causal agent chagas disease related altitude accordingly triatoma dimidiata hemiptera reduviidae specimens collected three different altitudes chiapas mexico parasite isolated infect uninfected dimidiata altitudes well female mice response variables phenoloxidase activity key insect immune response parasitaemia mice amastigote numbers heart oesophagus gastrocnemius brain rodents highest levels activity parasitaemia amastigotes found tryp cruzi isolates sourced particularly mouse brain polymerase chain reaction based analysis indicated tryp cruzi isolates belonged tryp cruzi lineage thus tryp cruzi may dangerous sources altitudes altitude dimidiata common apparently conditions beneficial development control strategies focus activity altitudes around least relation region present study sites
dendritic cells dcs recognize foreign structures different pathogens viruses bacteria fungi via variety pattern recognition receptors prrs expressed cell surface thereby activate regulate immunity major function dcs induction adaptive immunity lymph nodes presenting antigens via mhc mhc molecules naive lymphocytes therefore dcs migrate periphery lymph nodes recognition pathogens sites infection vitro experiments vaccination strategies monocyte derived dcs routinely used cells show similarities physiology morphology function conventional myeloid dendritic cells generated interleukin granulocytemacrophage colony stimulating factor csf stimulation monocytes isolated healthy donors demonstrate monocytes isolated stimulated anti coagulated human blood peripheral blood mononuclear cell pbmc enrichment density gradient centrifugation human monocytes differentiated immature dcs ready experimental procedures non clinical setting days incubation
antimicrobial peptides important components host innate immune responses exerting broad spectrum microbicidal activity pathogenic microbes first mollusk big defensin designated aibd cdna cloned bay scallop argopecten irradians expressed sequence tag est rapid amplification cdna ends race techniques scallop aibd consisted nucleotides canonical polyadenylation signal sequence aataaa poly tail encoding polypeptide amino acids high similarity aibd deduced amino acid sequence big defensin tachypleus tridentatus branchiostoma belcheri tsingtaunese indicated aibd member big defensin family expression aibd various tissues measured using northern blotting analysis mrna transcripts aibd could detected haemocytes unchallenged scallops temporal expression aibd haemolymph vibrio anguilarum challenge recorded quantitative real time pcr relative expression level aibd haemolymph regulated evenly first followed drastic increase increased fold post injection results indicated aibd could induced bacterial challenge participate immune responses irradians biological activity assay revealed recombinant aibd could inhibit growth gram positive gram negative bacteria also showed strong fungicidal activity towards expression host recombinant expression aibd made possible characterize functions involved immune responses also provided potential therapeutic agent disease control aquaculture elsevier ltd rights reserved
aim study compare concentration salivary immunoglobulin iga selected interleukins beta young individuals presence non presence lactobacillus reuteri saliva three week intervention probiotic lozenges study group consisted healthy individuals aged years clinical signs oral inflammation randomised double blind placebo controlled cross trial participants ingested two lozenges per day containing two strains probiotic bacterium reuteri placebo lozenges intervention wash periods three weeks stimulated unstimulated whole saliva collected baseline immediately termination intervention periods samples analysed total protein salivary iga selected cytokines extended analysis data collected analysing baseline follow saliva samples related ingestion probiotic lozenges presence reuteri dna extraction pcr amplification gel electrophoresis baseline individuals displayed presence reuteri positive immediately three week probiotic intervention individuals presence reuteri saliva significantly higher concentrations salivary iga iga protein termination probiotic intake compared non presence differences cytokine levels observed conclusion detectable levels reuteri saliva coincided higher concentrations salivary iga iga protein stimulated whole saliva three week daily intake probiotic lozenges findings suggest monitoring presence probiotic candidates oral environment important interpret understand possible immune modulating role maintaining oral health
review highlights biosynthesis heterocycles polyketide natural products focus oxygen nitrogen containing heterocycles ring sizes atoms heterocycles abundant structural elements natural products classes often contribute significantly biological activity progress recent years led much better understanding biosynthesis context plenty novel enzymology discovered suggesting pathways attractive target future studies
describe development potential use various designs recombinant hiv envelope glycoprotein trimers mimic structure virion associated spike target neutralizing antibodies goal trimer development programs induce broadly neutralizing antibodies potential intervene multiple circulating hiv strains among topics address designs various constructs native like trimers produced purified properties trimers vitro immunogenicity various animals immunization strategies may lead eventual elicitation broadly neutralizing antibodies summary native like trimers platform structure immunology based design improvements could eventually yield immunogens practical value solving long standing hiv vaccine problem
role intestinal microbiota microbial metabolites maintenance host health development metabolic disease gained significant attention past decade mechanistic insight revealing causality however scarce work ussar workers demonstrates complex interaction microbiota host genetics environmental factors involved metabolic disease development mice addition perry coworkers show microbial metabolite acetate augments insulin resistance rats studies underscore important role microbiota development obesity symptoms type diabetes rodents causality demonstrated humans development novel diagnostic therapeutic tools target gut microbiota high potential
tanhx vacuolar antiport gene wheat triticum aestivum transformed alfalfa medicago sativa via agrobacterium mediated transformation evaluate role vacuolar energy providers plant salt stress responses pcr southern blotting analysis showed target gene integrated medicago genome reverse transcription pcr indicated gene tanhx expressed transcriptional level relative electrical conductivity transgenic plants lower osmotic potential higher compared wild type plants salt stress conditions tonoplast atpase pyrophosphatase ppase hydrolysis activities atp dependent proton pump activities transgenic plants higher wild type plants enzyme activities could induced salt stress ppi dependent proton pump activities decreased nacl concentrations increased especially transgenic plants vacuolar antiport activities transgenic plants times higher wild type plants nacl stress antiport activity detectable wild type plants nacl transgenic plants increased increment salt stress intensity results demonstrated expression foreign tanhx gene enhanced salt tolerance transgenic alfalfa
seems many enzymes broader specificity originally thought broad specificity exhibited different contexts great significance biological functions practical application robust affinity ligands biological relationship used industrial enzymology moonlighting protein biological promiscuity vivo phenomena exploiting broad specificity similarly order disorder protein structure biologically relevant intrinsically disordered proteins idps seem indicate enzyme catalysis nearly anhydrous organic solvents example condition promiscuity idps show moonlighting property promiscuity molecular recognition time revisit concepts native structure biological specificity even binding site
baphicacanthus cusia nees bremek plant source many kinds drugs traditional chinese medicine widely distributed south china especially fujian recent studies cusia mainly focus chemical composition pharmacological effects analysis plant gene functions expression required better understand synthesis effective compounds real time quantitative polymerase chain reaction qpcr powerful method gene expression analysis necessary select suitable reference gene expression normalization ensure accuracy qpcr results ten candidate reference genes selected transcriptome datasets cusia study expression stability assessed across samples representing different tissues organs various conditions including ultraviolet irradiation hormonal stimuli jasmonic acid methyl ester abscisic acid different plant organs employing different algorithms genorm normfinder bestkeeper complementary approaches based different statistical procedures rrna found stable gene irradiation hormonal stimuli whereas ubiquitin conjugating enzyme best suitable gene different plant organs novel study aimed screen suitable reference genes corresponding primer pairs specifically designed gene expression studies cusia particular qpcr analyses
deep eutectic solvents dess touted recently potential alternatives ionic liquids although possess core characteristics similar low volatility non flammability low melting points low vapor pressure dipolar nature chemical thermal stability high solubility tuneability dess superior terms availability raw materials ease storage synthesis low cost starting materials become subject intensive research various sectors notably chemical electrochemical biological sectors date applications dess shown great promise especially medical biotechnological fields spite various achievements safety concern mixtures must sufficiently addressed indeed order exploit vast array opportunities dess offer biological industry first must established safe mixtures hence biotechnological applications dess implemented proven negligible low toxicity profiles review first kind discusses two current aspects des based research first describes properties mixtures ample focus toxicity profiles second provides overview breakthroughs occurred foreseeable prospects use dess various biotechnological biological applications elsevier inc rights reserved
peptide major histocompatibility complex pmhc multimers enable detection characterization isolation antigen specific cell subsets single cell level via flow cytometry fluorescence microscopy labeling reagents exploit multivalent scaffold increase avidity individually weak cell receptor tcr pmhc interactions dextramers improvement original streptavidin based tetramer technology multivalent improving sensitivity rare low avidity cells including self tumor reactive clones however commercial pmhc dextramers expensive house production involved typical biology research laboratory present simple inexpensive protocol preparing pmhc dextramers doping biotinylated dextran conventional tetramer preparation use pmhc dextramers identify patient derived tumor reactive cells apply dextran doping technique prepare tcr dextramers use novel reagents yield new insight mhc mediated antigen presentation
scientific discoveries technological advancements inseparable always take place coherent chronological manner next provide seemingly unconnected serendipitous series scientific facts whole converged unveil dna duplication cover many fundamental contributions microbial genetics vitro biochemistry rather journey emphasize interplay microscopy development culminating super resolution fluorescence microscopy nanoscopy digital image analysis impact understanding dna duplication interlace journey landmark concepts experiments brought cellular dna replication field present state
study effect eating foods high arsenic content intra inter individual variability urinary concentrations species daily urine samples collected consecutive days healthy male subjects daily food diary kept throughout study period personal exposure airborne measured study monomethylarsonic acid mma dimethylarsinic acid dma arsenobetaine determined urine samples inductive coupled plasma mass spectrometry sum mma dma ias hydride generation atomic absorption spectrophotometry exposure airborne limit detection samplings found ass urine samples whereas high urinary concentrations arsenobetaine observed exception arsenobetaine expressed percentage significant inter individual variability observed species ias mma dma ratio instead intra individual variability significant mma dma ratio among foods high content heavy consumption seafood shown influence inter individual variability dma arsenobetaine expressed creatinine ias conclusion even populations high intake organic foods finding significant inter individual significant intra individual variability urinary species confirms usefulness urinary speciation biological monitoring exposure elsevier ltd rights reserved
background periodontitis genetics smoking play important roles host immune system response aim study determine whether genetic background initial periodontitis caries could detected using active matrix metalloproteinase ammp chairside test finnish adolescents methods forty seven participants gave approval analysis oral fluid collection dna ammp chairside test performed participants adolescents aged years full mouth clinical parameters oral health assessed including periodontal oral mucosal caries status eastern finland dna extracted oral fluid samples genotyped polymorphisms candidate genes periodontitis results analyzed using logistic regression model values corrected multiple testing using false discovery rate pockets associated vitamin receptor vdr mmp respectively none single nucleotide polymorphisms studied showed significant association ammp chairside test least one caries lesion positivity conclusion genetic polymorphisms mmp vdr linked initial periodontitis finnish adolescents ammp chairside test eventually detect initial periodontitis young patients predisposing genetic background
rna sequencing rnaseq versatile method utilized detect characterize gene expression mutations gene fusions noncoding rnas standard rnaseq requires million sequencing reads include multiple rna products mrna noncoding rnas demonstrate targeted rnaseq capture permits focused study selected rna products using desktop sequencer rnaseq capture characterize unannotated low transiently expressed transcripts may otherwise missed using traditional rnaseq methods describe extraction rna cell lines ribosomal rna depletion cdna synthesis preparation barcoded libraries hybridization capture targeted transcripts multiplex sequencing desktop sequencer also outline computational analysis pipeline includes quality control assessment alignment fusion detection gene expression quantification identification single nucleotide variants assay allows targeted transcript sequencing characterize gene expression gene fusions mutations
first second laws thermodynamics applied biochemical reactions typical human metabolism open system model used human body energy conservation availability entropy balances performed obtain entropy generated main food components quantitative results entropy generation obtained function age using databases food nutrition board fnb centers disease control prevention cdc provide energy requirements food intake composition function age weight stature numerical integration performed human lifespan different levels physical activity results presented analyzed entropy generated lifespan average individuals ural death found degrees per body mass rate generation three times higher infants elderly entropy generated predicts life span years average male female individuals respectively values closely match average lifespan statistics years analysis effect different activity levels shown entropy generated increases physical activity suggesting exercise kept healthy minimum entropy generation minimized
male secondary sexual traits female mate choice traits must contain heritable variation sexual selection operate however female mate choice especially poorly known complicate matters male sexual traits female mate choice typically show condition dependence implying environmental effects probably play important synergistic role using cross fostering design therefore aimed disentangle genetic environmental potential interacting effects investigate affect expression sexually selected trait birdsong female mate choice assess environmental effects focused role social environment thus learned components among different male song traits investigated found high heritability song bout length song bout repertoire well intriguing gene environment interaction song bout repertoire specifically tutor appeared negatively affect song bout repertoire tutee genetic father large song bout repertoire positive effect descendants fathers small song bout repertoires contrast detect significant heritability female mate choice female mate choice contained learned component females significantly disfavoured foster father mate choice tests indicating learned inbreeding avoidance thus study provides important insights role social environment birdsong female mate choice however absence heritable component female mate choice suggests need studies investigating heritability female preferences heritable male song traits order gain better understanding potential coevolution male sexual traits female mate choice overall results suggest indirect genetic effects acting pre postfledging social contexts may play prominent role sexual selection association study animal behaviour published elsevier ltd rights reserved
borrelia burgdorferisensu lato infection confirmed clinical cases northeast mexico however bacterium identified infecting tick vector ixodes amblyomma dermacentor ticks collected mammals plants northeastern mexico examined borrelia eighteen ticks pcr positive fla rrna genes ospa gene southern blotting fla probe sequencing ospa genes confirmed infection burgdorferi sensu stricto findings together reports indigenous cases fulfil criteria allow northeastern mexico considered zone endemic lyme disease
lipoxygenase alox key enzyme biosynthesis pro inflammatory leukotrienes whereas lipoxygenases alox implicated formation pro resolving eicosanoids lipoxins resolvins although mammalian lox isoforms share high degree structural similarity ray coordinates indicated substrate binding pocket alox bigger alox suggesting possibility interconverting two isoenzymes test space based hypothesis reduced volume substrate binding pocket mouse alox introducing space filling amino acids critical positions found multiple mutations phe ala asn ala alox led gradual increase hete formation phetrp alaiie asnmet alox triple mutant major lipoxygenating enzyme similar data confirmed human alox structural modeling basis ray coordinates alox indicated volume substrate binding pocket inversely correlates share hete biosynthesis human mouse enzyme data proves principle possibility converting pro inflammatory lipoxygenases anti inflammatory lipoxygenases reducing volume substrate binding pocket elsevier inc rights reserved
micrornas functional noncoding rnas negatively regulate gene expression disturbance microrna expression may play role initiation progression certain diseases microrna expression signature identified associated pancreatic cancer accomplished application real time pcr profiling microrna precursors specimens human pancreatic adenocarcinoma paired benign tissue normal pancreas chronic pancreatitis nine pancreatic cancer cell lines hierarchical clustering able distinguish tumor normal pancreas pancreatitis cell lines pam algorithm correctly classified tumors normal pancreas adjacent benign tissues one hundred microrna precursors aberrantly expressed pancreatic cancer desmoplasia including micrornas previously reported differentially expressed human cancers mir mir mir mir well previously reported cancer mir mir top aberrantly expressed mirnas displayed increased expression tumor expression active mature microrna validated using real time pcr assay quantify mature microrna northern blotting reverse transcription situ pcr showed three top differentially expressed mirnas mir localized tumor cells stroma normal acini ducts aberrant microrna expression may offer new clues pancreatic tumorigenesis may provide diagnostic biomarkers pancreatic adenocarcinoma wiley liss inc
mitochondrial replicative dna helicase essential animal mitochondrial dna mtdna maintenance deleterious mutations gene encodes cause mitochondrial dysfunction manifested developmental delays defects arrest limited life span number human pathogenic phenotypes recapitulated animals across taxa fact replicative mtdna helicase discovered identification human disease mutations nuclear gene based upon deduced amino acid sequence homology bacteriophage gene protein functional primase helicase since time numerous investigations structure mechanism physiological relevance reported human disease alleles modeled human mouse drosophila systems review literature draw evolutionary comparisons serve shed light divergent features
present study deals exposure four different mortar formulations headspace two distinct sewer networks prone biodeterioration phenomenon due presence hydrogen sulphide cylindrical specimens composed two cements ordinary portland cement opc calcium aluminate cement cac without substitution cement blast furnace slag bfs prepared exposed exposure evolution cement materials monitored years exposure opc materials without bfs deeply deteriorated high speed best performances observed cac mortars correlated higher content aluminium ion rank durability observed site opc opc bfs cac bfs cac molecular biology analysis revealed microbial diversity varying according binder type well exposure duration
background improving islet graft revascularization become crucial task prolonging islet graft survival endothelial cells ecs basis new microvessels isolated islet coating demonstrated improve vascularization survival islet however traditional method coating islets low efficiency vitro study conducted evaluate effect polyglycolic acid pga scaffold efficiency islet coating ecs angiogenesis coated islet graft methods pga fibrous scaffold used coating islet culture evaluated efficiency coating islets islet graft angiogenesis results vitro experiments found apoptosis index ecs coating islet pga group significantly lower control group days culture stimulation index significantly greater pga group control group day ecs coating vascular endothelial growth factor vegf level pga group significantly higher coating control group days culture tight circumvallated adhesive three dimensional growth microenvironment islet cultured pga scaffold higher coating efficiency showing stronger staining intensity enzyme control group days culture following ecs coating vivo study pga scaffold significantly prolonged average survival time coated islet graft transplantation compared control group days days angiogenesis area survived grafts pga group compared control group measuring mean microvessel density addition expression vegf tyrosin protein kinase receptor tie gene increased pga scaffold group control group real time reverse transcription polymerase chain reaction analysis conclusions results demonstrate efficiency coating islets successfully increased culturing ecs pga scaffold method enhances function survival vascularization isolated islets vitro vivo
backgroundthere strong genetic component prostate cancer development estimated heritability addition recent epidemiological assessments show familial component prostate cancer specific survival could due either common genetics environment study sought estimate heritability prostate cancer specific survival studying brothers father son pairs sweden methodswe used linkage records three swedish national registers multi generation register cancer register cause death register one thousand seven hundred twenty eight brother pairs father son pairs family members diagnosed prostate cancer followed prostate cancer mortality assuming brothers average share segregating alleles environment fathers sons share segregating alleles environment implemented model including influences additive genetics heritability shared environment non shared environment survival data conditional likelihood estimation procedure developed fit model data simulation applied validate model assumptions resultsin model adjusted age diagnosis calendar period estimated heritability prostate cancer specific survival borderline significantly different zero shared environment component significantly different zero point estimate simulation studies sensitivity analysis revealed estimated heritability component robust whereas shared environmental component may underestimated conclusionsheritability prostate cancer specific survival considerably lower prostate cancer incidence supports hypothesis susceptibility disease progression disease separate mechanisms involve different genes assessment genetic basis prostate cancer specific survival warranted wiley periodicals inc
background accurate measurement free living energy intake long periods imperative understanding obesity treatment unfortunately traditional methods rely self report notoriously inaccurate although indirectly estimated intake balance method technique prohibitively labor intensive expensive requiring repeated measures energy expenditure via doubly labeled water dlw along multiple dual energy ray absorptiometry dxa scans measure changes body energy stores objective objective validate mathematical method measure long term changes free living energy intake design measured body weight changes delta time intervals using intake balance method individuals underwent caloric restriction part comprehensive assessment long term effects reducing intake energy study compared delta values calculated using dlw dxa obtained using mathematical model human metabolism whose inputs initial demographic information repeated body weight data results mean delta values calculated model within kcal dlw dxa method throughout study individual subjects overall root mean square deviation model dlw dxa method kcal model calculated delta values within kcal dlw dxa method conclusions accurate inexpensive estimates delta comparable dlw dxa method obtained using mathematical model repeated body weight measurements trial registered clinicaltrials gov nct
chitinases one kind glycosyl hydrolase hydrolyze beta linkages chitin according sequence similarity chitinases divided glycoside hydrolase family family chitinase nosema bombycis nbchia cloned purified metal affinity chromatography molecular exclusion chromatography sequence analysis indicated nbchia belongs glycoside hydrolase family class chitinase optimal temperature nbchia degrees respectively purified chitinase showed high activity toward soluble substrates ethylene glycol chitin soluble chitosan degradation chitin oligosaccharides glcnac detected high performance liquid chromatography showed nbchia hydrolyzed mainly second glycosidic linkage reducing end glcnac basis structure based multiple sequence alignment glu glu believed key catalytic residues site directed mutation analysis revealed enzymatic activity decreased upon mutation glu whereas mutation glu totally abolished enzymatic activity first report chitinase fungi microsporidia
renal fibrosis progressive pathological change characterized tubular cell apoptosis tubulointerstitial fibroblast proliferation excessive deposition extracellular matrix ecm mir implicated transforming growth factor tgf stimulated tissue fibrosis recent studies showed sphingosine kinase sphingosine phosphate sphk also critical tgf stimulated tissue fibrosis however clear whether sphk interacts mir study hypothesized sphk signaling linked upregulation mir tgf verify hypothesis first determined mir highly expressed renal tubular epithelial cells tecs stimulated tgf using qrt pcr northern blotting simultaneously inhibition mir mediated corresponding antimir markedly decreased expression deposition type collagen fibronectin cysteine rich protein ccn smooth muscle actin fibroblast specific protein tgf treated tecs elisa qrt pcr used measure sphk levels tecs production induced tgf activation sphk furthermore observed tgf stimulated upregulation mir abolished sphk sirna restored addition exogenous blocking spr also inhibited upregulation mir additionally mir overexpression attenuated repression tgf stimulated ecm deposition epithelial mesenchymal transition sphk spr sirna summary study demonstrates link sphk tgf induced mir renal tecs may represent novel therapeutic target renal fibrosis
present study estimates temporal variability anthropogenic heat flux density three common land use types found singapore october march estimated separately considering major sources waste heat urban environments heat release vehicular traffic buildings human metabolism respectively individual components calculated using combination top bottom modelling approaches energy consumption applied local context results show period magnitudes mean hourly reach maximum values commercial high density public housing low density residential areas respectively buildings found major source anthropogenic heat primarily related space cooling study area contributing weekdays weekends spatial temporal variations attributed differences traffic volume building energy consumption population density one first anthropogenic heat studies carried tropical city results show substantial order magnitude calculated city centres mid latitude cities winter time elsevier ltd rights reserved
marker assisted selection mas important modern breeding technique found effect markers quantitative trait loci qtl inconsistent leading cases mas failure raising doubts effectiveness model organism drosophila melanogaster employed study whether effective marker could found applied mas crossed stock carrying marker recessive mutation allele yellow gene chromosome three stocks carrying corresponding wild type markers design found marker significant association low body weight association consistent across different backgrounds marker effects female male approximately sigma phenotypic standard deviation sigma respectively next introgressed fragment via marker wild stock background generations marker assisted introgression mai constructed introgression stock body weight decreased female male respectively compared wild stock indicated must single qtl low body weight tightly linked marker shortened introgressed fragment less deeper mai using marker white marker narrower fragment also resulted similar decrease body weight induced indicating qtl low body weight located within less interval molecular characteristics marker pcr amplification southern blotting revealed yellow gene deficient stock leading disappearance melanin cuticle probably influencing developmental process results confirmed existence effective qtl markers applicable mas breeding schemes potential application breeding new stocks
meeting report highlights key trends emerged conference entitled post transcriptional gene regulation plants held july satellite meeting annual meeting american society plant biologists austin texas molecular biology rna emerging integral part framework plants responses environmental challenges drought heat hypoxia nutrient deprivation light pathogens moreover conference illustrated multitude customized pioneering omics related technologies applied often combination describe dissect complexities gene expression post transcriptional level
fimbriae protein based filamentous appendages protrude bacterial cell surface facilitate host adhesion two types fimbriae fima mfa periodontal pathogen porphyromonas gingivalis responsible adherence bacteria host cells oral cavity fimbrial forms composed proteins limited information polymerization mechanisms authors evaluated function mfa one mfa fimbrial accessory proteins using mfa gene disruption complementation studies authors revealed mfa affects incorporation accessory proteins mfa mfa fibers expression fimbriae cell surface mfa predicted terminal domain ctd uses type secretion system tss limited organism related bacteroidetes species translocation across outer membrane determine relationship putative mfa ctd tss mutants constructed frame deletion ctd deletion poru terminal signal peptidase linked tss mediated secretion ctd expressing strain presented similar phenotype mfa disruption mutant reduced expression fimbriae lacking accessory proteins poru mutants ctd expressing strain showed intracellular accumulation mfa results indicate mfa function requires tss mediated translocation across outer membrane dependent ctd subsequent incorporation fibers findings suggest presence novel polymerization mechanism gingivalis fimbriae
aim anthropometric survey conducted bosnia herzegovina bih map local geographical differences male stature anthropometric characteristics sitting height arm span addition investigate main environmental factors influencing physical growth documented values height would compared available nutritional socioeconomic statistics anthropometric data collected boys aged approximately years years schools towns corrected population size examined regions average height young males bih bosniak croat federation republika srpska regional variation considerable region doboj region trcbinjc results fill long term gap anthropological research western balkans confirm older reports population dinaric alps distinguished extraordinary physical stature together dutch montenegrins dalmatians men herzegovina regarded tallest world nutritional standards socioeconomic conditions still deeply suboptimal likely explanation exceptional height lies specific genetic factors associated spread haplogroup genetic potential height region could greatest world future studies elucidate roots intriguing phenomenon touches important aspect human biodiversity
trichoderma harzianum mycoparasitic filamentous fungus produces secretes wide range extracellular hydrolytic enzymes used cell wall degradation due potential biomass conversion harzianum draws great attention biofuel biocontrol industries research report extensive secretome analysis harzianum fungus grown cellulose medium secretome analyzed combination enzymology maldi autoflex ltq orbitrap total proteins identified using high resolution interestingly although cellulases found major hydrolytic enzymes secreted cellulose medium chitinases endochitinases may reflect biocontrol feature harzianum glycoside hydrolase family including chitinases endo acetylglucosaminidases hexosaminidases galactosidases xylanases exo glucanases endoglucanases xylosidases arabinofuranosidase acetylhexosaminidases enzymes represented total secretome representatives classified protease family others mostly intracellular proteins considerable part secretome composed hypothetical proteins probably absence annotated harzianum genome harzianum secretome composition highlights importance fungus rich source hydrolytic enzymes bioconversion biocontrol applications
highly orchestrated transcriptional metabolic reprogramming activation drastically transforms main functions physiology human macrophages across polarization spectrum lipids example modify protein function acting remotely signaling molecules also locally altering physical properties cellular membranes changes play key roles functions highly plastic immune cells due involvement inflammation immune responses phagocytosis wound healing processes report analysis major membrane lipids distinct phenotypes resting classically activated alternatively activated deactivated human monocyte derived macrophages different donors samples subjected supercritical fluid chromatography ion mobility mass spectrometry analysis allowed separations based lipid class facilitating profiling fatty acid composition different levels arachidonic acid mobilization well fatty acid changes observed different lipid classes distinct polarization phenotypes suggesting activation highly orchestrated specific enzymatic processes biosynthesis lipid signaling molecules cell membrane remodeling thromboxane production appeared specific marker polarization alterations global composition lipid layer membranes cell provide potential methodology definition determination cellular tissue activation states elsevier inc rights reserved
study carried develop model system using selection method disease resistant plant breeding programs using herbicide bialaphos resistant patii gene gene based marker spraying bialaphos could eliminate susceptible plants segregating populations thereafter tomato momotaro yoke transformed patii gene independent transformants acquired total transformants analyzed transgene copy numbers southern blotting segregation ratios bialaphos resistance statistical analysis revealed transgene copy numbers segregation ratios always coincided especially tendency underestimating real numbers transgenes multicopy lines two stepwise screening method applied select tomato plants linked transgenic patii disease resistance gene based resistant susceptible ratios plant finally selected due estimated linkage patii gene gene chromosome newly developed system could applied economical crop breeding programs
visualization chemical concepts challenging many students arguably critical skill beginning students biochemistry develop since new information often presented visually form textbook figures recommended visual literacy explicitly taught classroom rather assuming students develop skill activity described designed assist students development understanding basic representations protein three dimensional structure well various types ligands small molecules ions use ipad application pymol used laboratory exercise also used typical minute class period portion activity assigned homework international union biochemistry molecular biology
exploring cell biology hepatocytes vitro could powerful strategy dissect molecular mechanisms underlying structure function liver vivo however approach relies appropriate vitro cell culture systems recapitulate cell biological metabolic features hepatocytes liver whilst accessible experimental manipulations adapted protocols high resolution fluorescence microscopy quantitative image analysis compare two primary hepatocyte culture systems monolayer collagen sandwich respect distribution two distinct populations early endosomes appl eea positive endocytic capacity metabolic signaling activities addition acquisition hepatocellular polarity primary hepatocytes grown collagen sandwich monolayer culture recapitulated apico basal distribution eea endosomes observed liver tissue found distribution correlated organization actin cytoskeleton vitro surprisingly dependent nutritional state vivo hepatocytes collagen sandwich also exhibited faster kinetics low density lipoprotein ldl epidermal growth factor egf internalization showed improved insulin sensitivity preserved ability glucose production compared hepatocytes monolayer cultures although vitro culture system reproduce exquisite structural features liver tissue data nevertheless highlight ability collagen sandwich system recapitulate key structural functional properties hepatocytes liver therefore support usage system study aspects hepatocellular biology vitro
esophageal cancer highly malignant tumor overall survival rate remains low traditional treatment sufficiently effective thus urgent need new effective treatments advances cancer immunotherapy changed situation type therapy significant potential eliminate tumors little damage normal tissue treatment primarily aims enhance ability immune system eliminate tumors prevent tumor immune escape associated immune surveillance review summarizes current cancer therapeutic strategies immunotherapy studies demonstrate potential immunotherapy treatment
background invasive meningococcal disease imd incidence increased quebec starting caused serogroup sequence type clone saguenay lac saint jean slsj region particularly affected rate per person years may immunization campaign launched slsj using component protein based meningococcal vaccine menb aimed evaluate impact campaign years initiation methods immunization registry data serogroup invasive meningococcal disease imd cases notified public health authorities confirmed culture polymerase chain reaction july december analyzed including multivariate poisson regression model incidence rates results end campaign targeted slsj residents months years age immunized following initiation campaign imd case occurred among vaccinees whereas cases reported among unvaccinated adult slsj residents third case unvaccinated child stayed region week prior disease onset imd incidence decreased regions years sporadic cases continued occur multivariate analysis showed significant effect campaign slsj region relative imd risk conclusions results suggest high level protection provided menb following mass vaccination regional level along reassuring safety data supports current recommendations menb use controlling outbreaks caused clones covered vaccine
background leishmania use exosomes communicate mammalian hosts secreted vesicles appear contribute pathogenesis delivering protein virulence factors macrophages eukaryotes exosomes found carry rna cargo mrnas small non coding rnas capable altering recipient cell phenotype whether leishmania exosomes also contain rnas able deliver bystander cells known show leishmania exosomes indeed contain rnas compare contrast rna content exosomes released leishmania donovani leishmania braziliensis results purified rna exosomes collected axenic amastigote culture supernatant found compared total leishmania rna exosomes mainly contained short rna sequences exosomes intact membranes capable protecting rna cargo degradation rnase moreover exosome rna cargo delivered host cell cytoplasm vitro sequencing exosomal rna indicated majority cargo sequences derived non coding rna species rrna trna depth analysis revealed presence trna derived small rnas novel rna type suspected regulatory functions northern blotting confirmed specific selective enrichment trna derived small rnas exosomes also identified number novel transcripts appeared specifically enriched exosomes compared total cell rna addition observed presence sequences mapping sirna coding regions braziliensis donovani exosomes conclusions results show leishmania exosomes selectively specifically enriched small rnas derived almost exclusively non coding rnas exosomes competent deliver cargo novel potential small regulatory rnas macrophages may influence parasite host cell interactions remarkably high degree congruence exosomal rna content donovani braziliensis argues presence conserved mechanism exosomal rna packaging leishmania findings open new avenue research non canonical small rna pathways trypanosomatid may elucidate pathogenesis identify novel therapeutic approaches
international federation clinical chemistry laboratory medicine ifcc established reference measurement procedures rmps popular enzymes manufacturers assign values commercial calibrators traceable rmps achieve equivalent results clinical samples independent reagent kits instruments laboratory measurement carried situation however far acceptable manufacturers continue market assays giving results traceable internationally accepted rmps meanwhile end users often abandon assays demonstrated insufficient quality enzyme measurements creatine kinase satisfactorily standardized substantial improvement performance marketed gamma glutamyltranspeptidase ggt assays demonstrated conversely aminotransferase measurements often exceed desirable analytical performance lack pyridoxal phosphate addition commercial reagents measurements lactate dehydrogenase ldh alkaline phosphatase alp alpha amylase amy still show major disagreement suggesting need improvement implementing traceability higher order references mainly result using assays different analytical selectivities enzymes definition laboratory professionals clinically acceptable measurement uncertainty enzyme together adoption eqas commutable materials use evaluation approach based trueness represent way forward reaching standardization clinical enzymology
background aims liver injury results activation hepatic stellate cells hscs turn produce matrix metalloproteinase mmp response pro inflammatory cytokines tissue remodelling study explored transcriptional induction mmp gene tumour necrosis factor alpha tnf alpha hscs methods human hsc line used present study gelatin zymography enzyme linked immunosorbent assay northern blotting gene promoter reporter assays used analyse induction mmp protein mrna expression gene transcription respectively deletional site directed mutations introduced promoter region transiently transfected cells determine cis acting elements necessary tnf alpha inducibility gel shift mobility assays used determine transcriptional factors involved tnf alpha responsiveness results tnf alpha upregulated mmp protein mrna expression dose dependent manner time course experiment revealed rapid induction mmp mrna expression tnf alpha treatment mutation putative nuclear factor kappa binding site almost completely abolished tnf alpha response mmp gene promoter activity suggesting transcriptional regulation mmp expression tnf alpha via site electrophoretic mobility shift assay supershift assays indicated transcriptional regulation regulated via homodimer kappa conclusions mmp gene expression might induced tnf alpha via homodimer kappa activated human hscs
salt stress major limiting factor negatively affects many physiological processes plants salinity promotes generation reactive oxygen species subsequently oxidative damage cellular components plant salt stress tolerance requires activation antioxidative pathways prevent plant cell injurious effects study real time quantitative reverse transcription polymerase chain reaction used determine protective role two antioxidant genes iron superoxide dismutase sod catalase cat cuminum cyminum treatment nacl enzymatic activities assayed spectrophotometrically three antioxidants moreover growth parameters protein content proline accumulation measured comparison control plants plants exposed nacl concentration accumulated higher levels proline nacl plants showed higher superoxide dismutase ascorbate peroxidase catalase activities condition also induced expression sod cat genes mrna level protein content treated plants significantly decreased nacl remained constant concentrations whereas growth parameters one exception case shoot length change plants receiving low mild salt concentrations nacl nacl affected parameters negatively details concluded cyminum respond salt stress antioxidant system efficiency proline accumulation
study presents isolation characterization novel nonsymbiotic gene sessile oak quercus petraea seedlings herein designated qphb cellular tissue expression qphb analysed northern blotting situ hybridization encoded protein predicted consist amino acid residues shares amino acid sequence identity arabidopsis class nonsymbiotic respectively northern blot analysis revealed qphb strongly expressed roots spatial expression analysis qphb root apical region sessile oak situ hybridization indicated transcripts mostly abundant protoxylem cell initials cortical cells protoderm addition comparing expression profile qphb sessile pedunculate oak quercus robur two species contrasted hypoxia tolerance transcript level qphb rose early flood tolerant species pedunculate oak root submergence spatial temporal expression qphb suggests gene could participate perception signalling hypoxia
solvent excluded surface ses one popular surface definitions biophysics molecular biology addition usage biomolecular visualization widely used implicit solvent models ses usually immersed cartesian mesh therefore important construct sess eulerian representation biophysical modeling computation work describes software package called eulerian solvent excluded surface eses generation accurate sess cartesian grids eses offers description solvent solute domains specifying intersection points ses cartesian grid lines additionally interface normal intersection point evaluated furthermore given biomolecule eses software provides whole surface area also partitions surface area according atomic types homology theory utilized detect topological features loops cavities complex formed ses sizes loops cavities measured based persistent homology evolutionary partial differential equation based filtration eses extensively validated surface visualization electrostatic solvation free energy computation surface area volume calculations loop cavity detection size estimation used amber pbsa test set electrostatic solvation energy area volume validations results either calibrated analytical values compared msms software wiley periodicals inc
background early diagnosis esophageal squamous cell carcinoma escc important issue improve prognosis hox transcript antisense rna hotair long noncoding rna lncrna expressed hoxc locus recently revealed oncogenic regulator escc study aimed investigate whether serum hotair involved diagnosis escc methods study detected serum hotair expression patients escc including tumor resection without surgery healthy volunteers investigate role serum hotair escc using quantitative real time polymerase chain reaction qrt pcr method results clinical data indicated serum hotair correlated tnm stage expression level serum hotair significantly higher escc patients compared healthy controls roc curve analysis yielded area roc curve auc value also serum hotair expression level decreased obviously postoperative samples one month surgery compared preoperative specimens moreover significant correlation serum hotair expression expression hotair escc tissue according pearson correlation analysis conclusions study first time demonstrated serum hotair might serve potential biomarker diagnosis escc
adamts like adamtsl secreted protein resembling ancillary domains adamts proteases distinct structural features thrombospondin type repeats tsrs unusually long spacer module humans mice contains novel insertion bearing six glycosylation sites adamtsl protein expressed hekf cos cells cell surface extracellular matrix binding glycoprotein linked carbohydrate constituting similar mass adamtsl mrna found abundantly adult mouse liver lung spleen northern blotting mouse embryogenesis adamtsl expressed strongly third week gestation adamtsl mrna detected situ hybridization developing skeletal muscle liver bronchial arterial smooth muscle skin intervertebral disc perichondrium pancreas spinal cord immunohistochemical localization adamtsl protein similar mrna expression detection adamtsl mrna protein developing skeletal myotubes undifferentiated myogenic precursors led investigate regulation vitro myogenic differentiation myogenic cells cells rendered non myogenic expression ras cells differentiation induced serum starvation triggered expression adamtsl mrna coordinately myog marker muscle differentiation furthermore activation key myogenic determinant myod fibroblasts also triggered expression adamtsl mrna collectively data suggest induction adamtsl mrna integral feature myogenesis elsevier international society matrix biology rights reserved
undertaken physicochemical studies dehydrogenase aerobe oligotropha carboxidovorans probing binuclear containing active site oxidized enzyme fad reducing equivalents obtained transferred quinone pool regarding fad site characterized semiquinone oxidation state epr identified blue neutral form linewidth signature long wavelength absorbance fadh also observed absorption spectrum partially reduced enzyme low enzyme exhibits dependent absorption spectrum oxidized state lost upon covalent modification enzyme flavin specific agent diphenyliodonium cation dependence attributed tyr fad containing coxm subunit sits atop face isoalloxazine ring van der waals contact electron equilibration among enzyme four redox active centers including two clusters addition binuclear center fad found dependent fast followed using stopped flow jump protocol electron transfer iron sulfur clusters fad thus much faster members xanthine oxidase family molybdenum containing enzymes dehydrogenase belongs finally complex binuclear center bicarbonate characterized epr absence observed hyperfine coupling using labeled bicarbonate suggests strongly bicarbonate directly coordinated partially reduced binuclear center elsevier rights reserved
four species malaria parasite plasmodium falciparum plasmodium vivax plasmodium malariae plasmodium knowlesi infect humans living khanh phu commune khanh hoa province vietnam latter species also infects wild macaque monkeys region order understand transmission dynamics three species attempted detect gametocytes three species blood infected individuals sporozoites salivary glands mosquitoes region detection gametocyte specific mrna targeted region pfg pvs pmg pks indicators presence falciparum vivax malariae knowlesi gametocytes respectively gametocyte specific mrna present people infected falciparum vivax malariae knowlesi respectively wefound mosquitoes knowlesi salivary glands also carried human malaria parasites suggesting mosquitoes infected knowlesi human infections
purpose review discovery several genetic variants associated erythroid traits subsequent elucidation functional mechanisms exemplars power new genetic genomic technology present review highlights findings recent genetic studies related control erythropoiesis dyserythropoiesis fetal hemoglobin erythroid related trait recent findings identification genetic modulators erythropoiesis involved two approaches genome wide association studies gwass using single nucleotide polymorphism snp arrays revealed common genetic variants associated erythroid phenotypes hemoglobin red cell count mcv mch fetal hemoglobin massive parallel sequencing whole genome sequencing wgs whole exome sequencing wes led discovery rarer variants gfib sbds rps pklr epo epor klf gata functional genomic studies aided computational approaches gene editing technology refined regions encompassing putative causative snps confirmed regulatory role different stages erythropoiesis summary five meta analysis gwass identified genetic loci associated erythroid phenotypes potential regulators erythropoiesis loci showed pleiotropy associated multiple erythroid traits suggesting undiscovered molecular mechanisms challenges underlying erythroid biology sequencing strategies wgs wes elucidated role rare variants dyserythropoiesis integration common rare variant studies functional assays involving latest genome editing technologies significantly improve understanding genetics underlying erythropoiesis erythroid disorders
background current study conducted expedite international standardized reporting bone marrow disease children neuroblastoma improve equivalence care methods multidisciplinary international neuroblastoma response criteria bone marrow working group convened national cancer institute january representation europe north america australia practical transferable recommendations standardize reporting bone marrow disease developed results authors knowledge current study first comprehensively present consensus criteria collection analysis reporting percentage area bone marrow parenchyma occupied tumor cells trephinebiopsies quantitative analysis neuroblastoma content bone marrow aspirates immunocytology reverse transcriptase quantitative polymerase chain reaction revised inclusion paired like homeobox phoxb immunohistochemistry reverse transcriptase quantitative polymerase chain reaction recommended recommendations recording bone marrow response provided authors endorse quantitative assessment neuroblastoma cell content bilateral core needle biopsies trephines aspirates children neuroblastoma exception infants evaluation aspirates alone advised interesting note disease accepted internationally achievable level disease assessment conclusions quantitative assessment neuroblastoma cells recommended provide data evidence based numerical criteria reporting bone marrow response realized particularly important minimal disease setting neuroblastoma detection bone marrow intermittent clinical impact yet validated wide adoption harmonized criteria enhance ability compare outcomes different trials facilitate collaborative trial design american cancer society
purpose antiangiogenic receptor tyrosine kinase inhibitor rtki bromo difluorophenyl methoxy pyrrolidinyl butyl amino carbonyl amino isothiazolecarboxamide hydrochloride targets vegfr half maximal inhibitory concentration however target inhibition epidermal growth factor receptor egfr occurs higher concentrations study designed determine effect topical rtki treatment egf mediated corneal epithelial wound healing develop new strategies minimize target egfr inhibition methods vitro corneal epithelial wound healing measured response egf using transformed human cell line htcepi cells vivo corneal wound healing assessed using murine model complementary assays wound healing measured presence varying rtki concentrations immunoblot analysis used examine egfr vegfr phosphorylation kinetics egfr degradation alamar blue assay measured vegfr mediated cell biology results receptor tyrosine kinase inhibitor exposure caused dose dependent inhibition egfr mediated corneal epithelial wound healing vitro vivo nanomolar concentrations menadione vitamin analog coadministered rtki slowed egfr degradation ameliorated inhibitory effects epithelial wound healing vitro vivo menadione alter rtki vegfr phosphorylation inhibition vegf induced retinal endothelial cell proliferation conclusions antiangiogenic rtki exhibited target effects corneal epithelium minimized menadione without deleteriously affecting target vegfr blockade data indicate menadione potential topical supplement individuals suffering perturbations corneal epithelial homeostasis especially untoward side effect kinase inhibitors
background contamination well known often neglected problem molecular biology investigated prevalence cross contamination among samples distinct species animals processed laboratory subjected subcontracted transcriptome sequencing results using cytochrome oxidase barcode identified minimum events species contamination approximately samples affected analysis laboratory metadata revealed strong effect sequencing center nearly detected events species contamination involved species sent day company introduce new methods address amount within species individual contamination correct problem calling genotypes base read counts conclusions report evidence pervasive within species contamination data set show classical population genomic statistics synonymous diversity ratio non synonymous synonymous diversity inbreeding coefficient fit tajima sensitive problem various extents control analyses suggest published results probably robust problem contamination recommendations prevent avoid contamination large scale population genomics molecular ecology provided based analysis
background rett syndrome rtt neurodevelopmental disorder caused mostly disruptions mecp gene mecp null mice show imbalances neuronal excitability synaptic communications several previous studies indicate augmenting synaptic gaba receptors gaba alleviate rtt like symptoms mice addition synaptic gaba group gaba found outside synaptic cleft capability produce sustained inhibition may potential therapeutic targets control neuronal excitability rtt methods wild type mecp null mice randomly divided four groups receiving extrasynaptic gaba agonist tetrahydroisoxazolo pyridin hydrochloride thip vehicle control respectively low dose thip administered neonatal mice lactation rtt like symptoms including lifespan breathing motor function social behaviors studied mice became mature changes neuronal excitability norepinephrine biosynthesis enzyme expression studied electrophysiology molecular biology results evident sedation adverse side effects early life exposure thip extended lifespan alleviated breathing abnormalities enhanced motor function improved social behaviors mecp null mice beneficial effects associated stabilization locus coeruleus neuronal excitability improvement norepinephrine biosynthesis enzyme expression conclusions thip treatment early lives might therapeutic approach rtt like symptoms mecp null mice perhaps people rtt well
biofilm forming strain pichia fermentans found strong antagonist brown rot grey mold artificially wounded apple fruit inoculated either monilinia fructicola botrytis cinerea respectively strain yeast however aggressive pathogen inoculated peach fruit causing rot fruit tissues even absence pathogens optical scanning electron microscopy showed fermentans produces yeast like shaped cells colonization apple tissue exhibiting pseudohyphal growth peach tissue rapid subtractive hybridization approach rash used identify differentially expressed genes pathogenic form fermentans comparing cdna fermentans sampled hours growth apple cdna strain grown hours peach fruit total clones analysed reverse northern blotting technique yielding fragments significantly expressed peach less apple tissue sequences compared available genome sequences another dimorphic yeast candida albicans homologous genes identified relationship genes dimorphism pathogenicity discussed
protein acetylation important posttranslational modification recent identification new substrates enzymes new links disease modulators protein acetylation therapy alpha tubulin acetyltransferase alpha tat major alpha tubulin lysine acetyltransferase mammals nematodes protozoa activity plays conserved role several microtubule based processes present ray crystal structure human alpha tat acetyl coa complex together structure based mutagenesis enzymatic analysis functional studies cells elucidate catalytic mechanism mode tubulin specific acetylation find alpha tat overall fold similar gcn histone acetyltransferase contains relatively wide substrate binding groove unique structural elements play important roles alpha tubulin specific acetylation conserved aspartic acid cysteine residues play important catalytic roles ternary complex mechanism alpha tat mutations analogous effects tubulin acetylation vitro cells demonstrating central determining factor alpha tubulin acetylation levels vivo together studies provide general insights distinguishing features histone tubulin acetyltransferases specific implications understanding molecular basis tubulin acetylation developing small molecule modulators microtubule acetylation therapy
purpose review ebb flow genetic influence relative understanding craniofacial dental disorders evolved tacit acceptance current genetic paradigm review explores science behind craniofacial dental disorders lens recent past current findings using tooth agenesis model advances craniofacial genetics recent findings contemporary studies craniofacial biology takes advantage technological resources stemming genomic post genomic eras emerging data highlights role key genes epigenetic landscape controlling genes causing dentofacial abnormalities also report novel glufs msx mutation one family segregating autosomal dominant form severe tooth agenesis illustration evolving theme different mutations gene result spectrum dentofacial phenotypic severity summary future clinical therapeutics benefit advances genetics molecular biology refine genotype phenotype correlation indeed past century suggests continued convergence genetic science practice clinical dentistry
extracellular vesicles exosomes constitute evolutionarily conserved mechanism intercellular signaling exosomes gaining increasing amount attention due role pathologies including malignancy importance prognostic diagnostic markers potential therapeutic tool merkel cell carcinoma mcc aggressive form skin cancer poor prognosis effective systemic treatment cancer type currently available exosome based therapy proposed however comprehensive secretome profiling performed mcc help unveil putative contribution exosomes mcc studied protein content mcc derived exosomes since approximately mcc cases contain merkel cell polyomavirus mcpyv secretomes two mcpyv negative two mcpyv positive mcc cell lines compared identified high confidence exosome derived proteins common four cell lines annotated exocarta vesiclepedia databases include proteins implicated motility metastasis tumor progression integrins tetraspanins intracellular signaling molecules chaperones proteasomal proteins translation factors additional virus negative virus positive mcc cell lines examined identify highly representative exosomal proteins may provide reliable prognostic diagnostic biomarkers well targets treatment future data available via proteomexchange identifier pxd
background rare conditions catastrophic families implications public health substantial study compared basic surveillance active medical record review linked administrative data file assess number cases two rare conditions fragile syndrome fxs muscular dystrophy population methods two methods data collection used collect information five counties comprising two standard metropolitan statistical areas south carolina passive system relied mostly health claims data using icd diagnostic codes active system relied nurse abstracting records list licensed physicians specialties neurology orthopedics genetics results fxs cases cases met case definitions using active surveillance additional cases found conditions determined true cases linking actively collected fxs cases passive datasets found estimated total numbers cases similar using capture recapture analysis positive predictive values cases identified passive system fxs conclusions applying capture recapture methods passively collected surveillance data rare health conditions produced estimate number true cases similar obtained active data collection
indo pacific azooxanthellate coral tubastraea micranthus cairns zibrowius successfully invaded offshore oil gas production platforms gulf mexico genetic structure populations unknown question arisen regarding whether multiple invasions species five platforms surveyed two found possess populations large enough sample tissue samples collected analyzed via amplified fragment length polymorphisms aflps structure analysis identified four genetically distinct clusters groups among two platforms population exhibited overwhelming association one genetic group although three groups represented present small proportions contrast population showed high genetic diversity colonies exhibiting association four groups widely varying proportions lack genetic variability likely resulted single recruitment event isolated platform possible event could derived second invasion species case treatment invasive would best focused species vector point treating hull ballast water ship prior reaching destination rather already infected environment avoid repeated replacement invasions genetic variability likely result multiple recruitment events possible factors causing observed pattern could include recruitment genetically diverse populations region sampling older age population reproduction could result admixture elsevier rights reserved
new species genus microhyla described jamun khadi jhapa district eastern nepal based molecular morphological comparisons species sister taxon microhyla ornata distinguished unique vocalization morphology molecular phylogeny uncorrected genetic divergences based rrna gene new species closest congeners nilphamariensis ornata rubra respectively new species microhyla taraiensis nov distinguished microhyla combination following morphological characters relatively larger body size svl ranges males females dorsal surface head body light red dots toes webbing poorly developed absent large round inner metacarpal tubercle elongated outer metacarpal tubercle addition study also provides new record microhyla nilphamariensis nepal
red cell special interest group sig meeting hosted british blood transfusion society provides annual forum presentation european based red cell research meeting held friday october national health service blood transplant nhsbt facility filton bristol provided exciting varied programme themes erythropoiesis malaria biology pathophysiology red cells properties stress disease ten speakers presented topics course one day meeting well attended delegates posters presented lunch break abstracts posters published end issue
structure telomeres four aphid species acyrthosiphon pisum megoura viciae myzus persicae rhopalosiphum padi evaluated southern blotting fluorescent situ hybridization revealing chromosomal end consists ttagg repeat presence telomerase coding gene verified successively pisum genome revealing aphid telomerase shares sequence identity ranging invertebrate vertebrate homologues possesses two main domains involved telomerase activity interestingly telomerase expression verified different somatic tissues suggesting aphids telomerase activity restricted human cells study telomeres persicae strain variable chromosome number showed aphid telomerase initiate novo synthesis telomere sequences internal breakpoints resulting stabilization chromosomal fragments
lepidopteran larvae infected large quantity pathogens parasitized nonadaptive parasitoids hemocytes hemocoel encapsulate foreign invaders cellular encapsulation requires hemocytes particularly plasmatocytes change states nonadhesive spherical cells adhesive spreading cells however unclear changes plasmatocytes regulated report integrin beta subunit hemocytes ostrinia furnacalis ofint beta plays important role regulating spreading plasmatocytes full length cdna sequence ofint beta cloned hemocytes phylogenetic analysis showed ofint beta belonged integrin beta family drosophila melanogaster highest sequence identity beta integrin pseudoplusia includens structural analysis deduced amino acid sequence indicated ofint beta similar functional domains known beta integrins lepidopteran insects pcr northern blotting western blotting immunohistochemical analyses showed ofint beta expressed mainly hemocytes especially plasmatocytes weakly fat body malpighian tubes epidermis hemocytes spread onto slides fewer antibodies ofint beta bound surface plasmatocytes furthermore anti ofint beta serum clearly inhibited spreading plasmatocytes together results indicate ofint beta may play important role regulating spreading plasmatocytes elsevier ltd rights reserved
micrornas mirnas class non coding rnas play critical roles post transcriptional regulation target genes involved variety biological processes development metabolism stress response panicum miliaceum panicum important grain crop mirnas identified plant using homology search based expressed sequence tag est analysis mirna precursor secondary structure total new mirnas identified mirnas found unevenly distributed among mirna families target analysis using plant small rna target analysis server psrnatarget showed newly identified mirnas potentially regulate target genes ten mirna families annotated involved rna regulation suggesting may play essential role post transcriptional regulation panicum selected mirnas representing eight families verified northern blotting indicating prediction method used identify mirnas effective
detergent enzymes account total worldwide production enzymes one largest successful applications modern industrial biotechnology proteases improve wash performance household industrial institutional laundry detergents used remove protein based stains blood grass body fluids food soils article describes two easy cheap laboratory exercises study presence profile basic enzymology detergent proteases laboratory practicals based determination detergent protease activity various commercial detergents using succinyl alanyl alanyl prolyl phenylalanine nitroanilide method bovine serum albumin degradation capacity students also required elucidate enzymatic subtype detergent proteases studying inhibitory potential several types protease inhibitors revealed experimental methodology additionally results exercises used provide additional insights elementary enzymology studying influence several important parameters protease activity temperature article influence effects surfactants oxidizers proposed students also develop laboratory skills problem solving capacities ability write laboratory report exercises mainly designed advanced undergraduate project biochemistry biotechnology sciences globally laboratory practicals show students biotechnological applications proteases detergent industry also reinforce important enzymology concepts
objectives inflammatory response cytokine activation markedly stimulated skeletal muscle various conditions interleukin pro inflammatory cytokine pleiotropic effects skeletal muscle adenosine released cell types binds class protein coupled receptors induce various skeletal muscle effects aim work investigate whether activation adenosine receptors particularly adenosine receptors could stimulate gene expression rat skeletal muscle cells materials methods rat skeletal muscle cells cultured flasks differentiated cells treated quantitative reverse transcription polymerase chain reaction probe based used analyze gene expression level among different treatment conditions results adenosine ethyluronamide neca stable adenosine analogue concentration time dependently stimulates gene expression skeletal muscle cells effect neca inhibited selective adenosine receptor antagonist psb using cyclic adenosine monophosphate camp arising reagent forskolin camp found involved regulation induction conclusion novel relationship adenosine regulation demonstrated first time regulation induced neca mediated adenosine receptor activation skeletal muscle dependent mainly camp pathway adenosine receptors thus potentially important pharmacological targets treating inflammation related diseases skeletal muscle tissues
poliovirus typically transmitted fecal oral route means risk infection virus distribution could achieved exposure virus contaminated food water aim study determine occurrence strains detecting virus pediatric patients admitted hospitals diarrhea chiang mai thailand applying reverse transcription polymerase chain reaction nucleotide sequencing analysis stool specimens collected pediatric patients pvs detected specimens among eight positive samples mixed infection norovirus human bocavirus detected one eight cases strains detected study characterized phylogenetic analysis utr partial sequences results revealed eight strains detected present study two four serotypes sabin vaccine strains data demonstrated presence sabin vaccine strains children acute gastroenteritis chiang mai thailand wiley periodicals inc
background developed new oligonucleotide microarray comprising identical subarrays simultaneous rapid detection avian viruses avian influenza virus aiv newcastle disease virus ndv infection bronchitis virus ibv infectious bursal disease virus ibdv single mixed virus infections objective study develop oligonucleotide microarray rapid diagnosis avian diseases would used course mass analysis routine epidemiological surveillance owing ability test one specimen several infections methods results paper describes technique rapid simultaneous diagnosis avian diseases avian influenza newcastle disease infectious bronchitis infectious bursal disease use oligonucleotide microarray conditions hybridization fluorescent labelled viral cdna microarray specificity tested use aiv ndv ibv ibdv strains well biomaterials poultry sensitivity specificity developed microarray evaluated use specimens biological material cloacal swabs sick birds tissue specimens dead wild domestic birds well use aiv ndv ibv ibdv strains different origin epidemiological biological characteristics ribsp microbial collection microarray demonstrates high diagnostic sensitivity within limits specificity specificity developed technique confirmed direct sequencing aiv ibdv ibv ndv gene fragments conclusion diagnostic effectiveness developed dna microarray therefore used mass survey specific detection aiv ndv ibv ibdv circulating region course epidemiological surveillance rather simple method rapid diagnosis avian viral diseases several times shortens duration assay versus classical diagnostic methods proposed
development reliable methods annotation clinical phenotypes algorithms calculate similarity values clinical phenotype profiles major challenge genomic personalized medicine since combined analysis phenotypic features genetic variants increase diagnostic yield especially exome genome sequencing human phenotype ontology project hpo provides ontology capturing phenotypic abnormalities human disease precise comprehensive fashion hpo enables reliable integration disease relevant information numerous databases also allows similarity patients patients disease descriptions calculated algorithmically hpo thereby represents solid foundation differential diagnostic applications well translational research prioritization novel disease genes exome genome sequencing projects
report expression high level human cyclooxygenase hcox mammalian cells using novel gene amplification method known mar gene amplification system mar plasmids contain mammalian replication initiation region nuclear matrix attachment region mar amplify autonomously without specific induction process study mar plasmid delta cotransfected pcag cox expresses hcox human hekt cells blasticidin double resistant cells obtained month real time pcr western blotting revealed expressions hcox mrna protein polyclonal monoclonal cells remarkably higher pcag cox transfected control cells southern blotting demonstrated amplification hcox gene copy number clone obtained cotransfection delta pcag cox copies per cell though clone obtained without using mar plasmid delta two copies results indicate high level hcox expression achieved result hcox gene amplification furthermore crude extract clone showed strong cox activity activity inhibited representative cox inhibitor indomethacin value results demonstrate mar gene amplification system simple useful method generating highly productive mammalian cells elsevier inc rights reserved
dideoxynucleoside triphosphates ddntps terminate bio polymerization dna become essential chemical component dna sequencing technology basic tool molecular biology research method radiolabeled fluorescent dye labeled ddntp analogues used dna sequencing detection terminated dna fragment single labeled ddntp incorporation dna pcr conditions report describes syntheses rationally designed novel amino functionalized ddntp analogue pyrrolidine nucleoside triphosphates prntps polymerase activities dna polymerase gel electrophoretic techniques mass page analyses strongly support incorporation prntps dna oligonucleotide therminator dna polymerase like control substrate ddntp resultant dna oligonucleotide functionalized amine group prntp incorporation polymerase hence prntps provide opportunities prepare demandable conjugated dna biomolecules dyes fluorescence molecule without modifying nucleobase structure elsevier ltd rights reserved
purification partial enzymology characteristics polyphenol oxidase ppo rape flower studied preliminary treatments crude enzyme solution turn purified ammonium sulfate dialysis sephadex gel chromatography optimal conditions stability ppo examined different values tempere tures subsequently ppo also characterized substrate catechol concentrations inhibitors kinetic parameters molecular weight results showed optimal ppo activity presence catechol ppo relatively stable ppo moderately stable temperatures degrees whereas easily denatured degrees ethvlenediaminetetraacetic acid sodium chloride calcium chloride little inhibitive effects ppo whereas citric acid sodium sulfite ascorbic acid strongly inhibitive effects michaelis menten constant maximal reaction velocity max ppo mol min crude ppo solution respectively ppo finally purified homogeneity purification factor fold recovery molecular weight kda indicating ppo dirner data obtained research may help prevent enzymatic browning rape flower storage processing
objective microbiota important role human metabolism nutrition immunity protection colonization pathogenic microorganisms radiation harm beneficial members gastrointestinal tract flora methods study included rural children aged years lived contaminated area exposed natural environmental radiation clinical symptoms irritable bowel syndrome healthy urban participants aged control group intestinal bacterial microbiota examined stool samples findings results indicated population levels microbiota enterobacter enterococcus lactobacillus bifidbacterium caecal contents subjects significantly less control group conclusion investigated alternation intestinal microbiota affected ionizing radiation children clinical symptoms irritable bowel syndrome
endothelin involved development cardiac hypertrophy heart failure investigated effects intracellular calcium transient mechanisms neonatal rat cardiomyocytes prepared calcium transient measured using fura treatment prolonged calcium transient decay presence thapsigargin alter calcium transient decay hand prolonged calcium transient decay maintained even sodium removed bath solution results indicate induced prolongation calcium transient decay mainly due suppression calcium uptake sarcoplasmic reticulum inhibition sodium calcium exchanger northern blotting analysis revealed sarcoplasmic reticulum atpase serca mrna decreased treated cardiomyocytes decrease inhibited moreover pretreatment chelerythrine partially restored induced decrease serca mrna whereas phorbol myristate acetate markedly reduced serca gene expression real time pcr analysis showed abundant eta receptor gene expression cardiomyocytes reduces serca gene expression eta receptor pkc pathway prolongs intracellular calcium transient decay specific inhibition eta receptor may possible therapeutic strategy improving cardiac performance
safety study transgenic plants actual significance creating new species commercializing transgenic plants based pcr southern blotting tests transgene genetic stability ipt gene advanced generation transgenic rice plants studied use plate colony counting technique influence ipt rice plants bacteria number rhizospheric soil investigated molecular detection showed foreign ipt gene stable genetic genome transgenic rice single copy amounts bacteria root soil transgenic lines distinct non transgenic controls tillering stage heading stage filling stage nevertheless variability significant growing season described results reveal ipt rice affect soil bacteria biomass plants field growth
recent appreciation novel subsets innate lymphoid cells ilcs important regulators tissue homeostasis inflammation repair raise questions regarding presence role cells cancer tissues addition natural killer fetal lymphoid tissue inducer lti cells ilc family comprises non cytolytic cytokine producing cells classified ilc ilc ilc based phenotypic functional characteristics differently natural killer cells prototypical members ilc whose role tumors better established involvement ilc subsets cancer progression resistance still fuzzy several instances controversial since current studies indicate context dependent beneficial pathogenic effects review current knowledge regarding involvement novel ilc subsets context tumor immunology highlighting ilc subsets might behave either friends foes european federation immunological societies published elsevier rights reserved
high foxp regulatory cells tregs involved graft specific tolerance solid organ transplantation however adoptive transfer polyspecific tregs alone insufficient prevent graft rejection even rodent models indicating graft specific tregs required developed highly specific chimeric antigen receptor recognizes hla molecule referred car transduction natural regulatory cells ntregs changes specificity ntregs without alteration regulatory phenotype epigenetic stability activation ntregs via car induced proliferation enhanced suppressor function modified ntregs compared ntregs car tregs exhibited superior control strong allospecific immune responses vitro humanized mouse models car tregs completely prevented rejection allogeneic target cells tissues immune reconstituted humanized mice absence immunosuppression therefore modified cells great potential incorporation clinical trials treg supported weaning allogeneic transplantation
opportunity distinguish accurate set genes associated multigenic diseases cardiomyopathies cardiac arrhythmias limited genomic era numerous methods measuring rna abundance exist including northern blotting multiplex polymerase chain reaction pcr quantitative real time reverse transcriptase pcr however techniques might used assess expression levels genes time today dna microarrays provide opportunity simultaneously analyze tens thousands genes giving remarkable possibility investigate genomic contribution cardiovascular diseases particular tissue stage health disease may used generate genomic profile microarray techniques already used infectious diseases oncology pharmacology facilitate clinicians risk stratify patients well predict assess therapeutic responses drugs paper describe recent advances use various types microarray technique diagnosis arrhythmogenic heart disease also highlight strategies methods differential gene typing comparing pros cons microarray analysis
endothelial cell dysfunction ecd common feature chronic renal failure crf defective nitric oxide generation due decreased endothelial synthase enos activity crucial parameter characterizing ecd arginine sole precursor biosynthesis among several transporters mediate arginine uptake cationic amino acid transporter cat acts specific arginine transporter enos hypothesis implies cat major determinant enos activity crf studied glomerular aortic arginine uptake cat cat messenger ribonucleic acid mrna expression cat protein rats weeks following nephrectomy crf sham operated animals rats crf treated orally either atorvastatin arginine drinking water modalities shown enhance enos activity improve endothelial function glomerular aortic arginine transport significantly decreased crf treatment either arginine atorvastatin abolished decrease arginine uptake crf rats using reverse transcriptase polymerase chain reaction northern blotting found significant increase glomerular aortic cat mrna expression crf western blotting revealed cat protein decreased crf remained intact following arginine atorvastatin administration renal systemic arginine uptake attenuated crf modulation cat protein findings provide possible novel mechanism enos inactivation endothelial dysfunction uremia
reproducible highly efficient protocol genetic transformation mediated agrobacterium established greengram vigna radiata wilczek double cotyledonary node dcn explants inoculated agrobacterium tumefaciens strain lba harboring binary vector pcambia containing neomycin phosphotransferase npt gene selectable marker beta glucuronidase gus reporter uida gene annexin gene important parameters like optical density agrobacterium culture culture quantity infection medium infection cultivation time acetosyringone concentration standardized optimize transformation frequency kanamycin concentration used select transformed cells transient stable gus expressions studied transformed explants regenerated putative plants respectively transformed shoot produced regeneration medium containing kanamycin cefotaxime rooted medium transient constitutive gus expression observed dcn explants different tissues plants rooted shoots confirming polymerase chain reaction pcr positive npt annexin genes taken maturity collect seeds integration annexin gene greengram genome confirmed southern blotting
cherished tenet nucleic acid enzymology holds synthesis polynucleotide phosphodiesters proceeds via attack high energy phosphoanhydride either nucleoside triphosphate case rna dna polymerases adenylylated intermediate case polynucleotide ligases rtcb exemplifies family rna ligases implicated trna splicing repair unlike classic ligases rtcb seals broken rnas phosphate ends show rtcb executes three step ligation pathway entailing reaction enzyme gtp form covalent rtcb histidinyl gmp intermediate transfer guanylate polynucleotide phosphate form polynucleotide intermediate iii attack end form splice junction rtcb structurally sui generis chemical mechanism unique wide distribution rtcb proteins bacteria archaea metazoa raises prospect alternative enzymology based covalently activated ends
physiologically based pharmacokinetic model containing skin compartment derived used simulate experimentally determined exposure xylene using human volunteers exposed controlled conditions biological monitoring conducted sampling exhaled alveolar air blood xylene urinary methyl hippuric acid concentrations dermal absorption xylene vapor successfully conveniently studied using breath sampling technique contribution xylene body burden dermal route exposure estimated model used investigate protection afforded air fed half face mask iteratively changing dermal exposure concentration possible predict ambient concentration required deliver observed urinary excretion methylhippuric acid following inhalation exposure ppm xylene vapor latter extrapolation demonstrates physiologically based pharmacokinetic modeling applied practical occupationally relevant way permitted step possible biological monitoring alone ability model extrapolate ambient exposure concentration dependent upon human metabolism data thereby demonstrating mechanistic toxicological basis model output methyl hydroxylation xylene catalyzed hepatic mixed function oxidase enzyme cytochrome active occupationally relevant ppm exposure range xylene use scaled vitro maximum rate metabolism maxc model also demonstrates increasingly valuable potential utility biokinetic data determined using alternative non animal methods human chemical risk assessment
originally prenatal diagnosis confined diagnosis metabolic disorders depended assaying enzyme levels amniotic fluid development recombinant dna technology molecular diagnosis became possible genetic conditions late briefly review history molecular prenatal diagnostic testing using duchenne muscular dystrophy example describe last years moved offering testing affected individuals using techniques southern blotting identify deletions rapid accurate pcr based testing identities precise change dystrophin greater number families discuss potential safer earlier prenatal genetic diagnosis using cell free fetal dna maternal blood concluding speculating recent techniques next generation sequencing might impact potential molecular prenatal testing progress without challenges cytogenetics molecular genetics begin unite one foresee main challenge identifying genetic change rather interpreting significance particularly prenatal setting frequently phenotype base interpretation copyright john wiley sons ltd
embryology eyelid complex process includes interactions surface ectoderm mesenchymal tissues mouse human eyelids form fuse birth open prenatally human postnatally mouse mouse cell migration stimulated different growth factors fgf tgf activin egf growth factors modulate downstream bmp signaling erk cascade jnk jun several mechanisms wnt catenin signaling pathway may inhibit regulate eyelid fusion eyelid opening hand driven bmp smad signaling system several human genetic disorders result dysregulation molecular pathways
proton induced ray emission pixe proton induced gamma ray emission pige techniques employed elemental analysis twelve different plants traditionally used medicinal purposes north east india pixe well established ion beam analysis technique sensitive non destructive determination various elements atomic number greater eleven present biological samples pige offers complementary method determination light elements sensitivity pixe analysis quite adequate combined together analytical techniques provide concentrations almost elements present medicinal plants quantities ppm validity techniques assured analyzing certified plant reference materials crms large number trace elements like found present studied plants variable proportions quantified percentage level elements found present parts per million levels results show many plants contain elements vital importance human metabolism prevention healing diseases
mesenteric lymph vital immune cell trafficking intestinal fluid chyle transport aid homeostatic maintenance reports investigating profiles circulatory dynamics mesenteric lymph micrornas mirnas present study aimed provide comprehensive analysis mirnas normal rodent mesenteric lymph reverse transcription quantitative polymerase chain reaction qpcr based array analysis performed examine expression levels mirnas normal rat mesenteric lymph using differential centrifugation presence mir representative lymph mirna exosomes assessed rat small intestine epithelial cell line iec derived exosomes prepared culture supernatants cells transfected cel mir used trace administered exosomes vivo investigate invivo delivery lymph mirnas via mesenteric lymphatics systemic circulation following injection celmir exo somes qpcr based array analysis detected mirnas lymph mirnas significantly differentially expressed lymph plasma lymph fractionation analysis demonstrated cell free lymph mir distributed exosome containing microsomal fraction furthermore vivo analysis lymph mirna delivery revealed exosomal cel mir markedly distributed lung compared liver kidney spleen thus indicating lung major organ responsible clearance exosomal lymph mirnas findings provide novel insights modulation gene expression mesenteric lymph mirnas lung
background steadily increasing pattern breast cancer mortality reported south korea since late paper explored trends educational inequalities female breast cancer mortality korea conducted age period cohort apc analysis educational level methods age standardized mortality rates breast cancer per person years calculated relative index inequality rii breast cancer mortality used inequality measure apc analyses conducted using web tool apc analysis provided division cancer epidemiology genetics national cancer institute results increasing trend breast cancer mortality among korean women due increased mortality lower education groups formal education primary education secondary education groups highest education group breast cancer mortality higher women tertiary education women education primary education reverse true consequently rii changed positive negative associations early lower education groups increased breast cancer mortality significant cohort period effects whereas highest group conclusions apc analysis socioeconomic position used study could provide important clue causes breast cancer mortality long term monitoring socioeconomic patterning breast cancer risk factors urgently needed
regenerative medicine strategies restoration functional tissue evolved concept vivo creation engineered tissue toward broader concept vivo induction functional tissue reconstruction multidisciplinary approaches investigated achieve goal using evolutionarily conserved principles stem cell biology developmental biology immunology current methods engineering medicine evolution vivo tissue engineering manipulation fundamental vivo tenets development regeneration potential capitalize upon incredibly complex partially understood ability cells adapt proliferate self organize differentiate functional tissue
background aims organization actin cytoskeleton podocyte foot processes plays critical role maintenance glomerular filtration barrier camp pathway important regulator actin network assembly cells however role camp pathway podocytes well understood type adenylate cyclase adcy previously thought specific neuronal tissue member family enzymes catalyses formation camp study characterized expression role adcy kidney methods expression adcy studied pcr northern blotting situ hybridization role adcy podocytes investigated analyzing adcy knockout mice adcy results conclusion adcy expressed kidney specifically podocytes kidney adcy critical role normal physiological functioning kidney histology function normal adcy mice however albumin overload resulted severe albuminuria adcy mice whereas wild type control mice showed mild albumin leakage urine conclusion identified adcy novel podocyte signaling protein seems role compensatory physiological processes glomerulus copyright karger basel
introduction bergstrom needle muscle biopsies used exercise physiologists years less accepted neuromuscular clinicians due size concerns methods retrospectively reviewed muscle bergstrom needle biopsies done year period determine sampling success patient subject experience complications compared sample yield two different needles bergstrom uch without suction modifications results needle biopsies adequate histology enzymology obtainable vastus lateralis deltoid biceps brachii soleus medial gastrocnemius muscles success rate minor complication rate approximately muscle fibers submitted histologic assessment suction modification use bergstrom uch needle associated larger sample size conclusions suction modified bergstrom needle muscle biopsy technique safe provides adequate sample size histologic ultrastructural dna enzyme analysis muscle nerve
aims genetic polymorphisms may contribute platelet reactivity diabetic patients however information influence long term antiplatelet therapy lacking aim evaluate role previously described genetic variants platelet reactivity risk cause mortality cardiovascular events methods blood samples obtained caucasian patients genome wide genotyping performed using illumina human omni quad microarrays individual genotyping selected snps performed using custom sequenom iplex assay conjunction mass array platform platelet reactivity measured verifynow aspirin assay pfa assay univariate multivariate cox regression analyses performed determine impact genetic variants platelets reactivity risk cause mortality cardiovascular events results among patients included follow death cause occurred patients cardiovascular events occurred patients within median observation time months years univariate analyses significant association presence minor alleles txbar primary secondary endpoint observed addition multivariate analyses revealed impact polymorphism primary secondary endpoint conclusions results study demonstrate first time association genetic polymorphism within txbar gene encoding platelet surface receptor long term survival diabetic patients treated asa
reported orally administrated acetate contributed suppression lipogenesis liver reduction lipid accumulation adipose tissue otsuka long evans tokushima fatty oletf rats aim study investigate effect acetate skeletal muscle adipose tissues treatment acetate showed higher rate oxygen consumption smaller size lipid droplets white adipose brown adipose tissues analysis northern blotting revealed transcripts myoglobin glut genes abdominal muscle oletf rats increased acetate treatment transcripts lipolytic genes increased white adipose brown adipose tissues possible acetate effects lipid metabolism skeletal muscles adipose tissues functions work obesity obesity linked type diabetes
phenytoin voltage gated sodium channel channel antagonist reportedly inhibits arginine vasopressin avp release isolated rat neurohypophysis far uncertain whether phenytoin direct action ectopic avp producing neuroendocrine tumors studied effect phenytoin release copeptin terminal fragment pro avp expression avp gene human small cell lung cancer cell line cells maintained rpmi medium fetal bovine serum used within fifth passage copeptin detected using new sandwich immunoassay avp mrna levels measured using real time reverse transcription polymerase chain reaction treatment phenytoin concentration inhibitory effect copeptin levels medium concentration avp mrna levels cells also decreased although sodium challenge added sodium meq increased copeptin levels medium sodium challenge added sodium meq effect avp mrna levels phenytoin concentration suppressed copeptin levels medium sodium challenge added sodium meq phenytoin concentration also decreased avp mrna levels cells sodium challenge added sodium meq meq among five tested nav channel subunits highly expressed cells however phenytoin significantly decreased mrna levels sodium challenge added sodium meq results suggest cells sensitive phenytoin sodium control avp release gene expression phenytoin might direct action ectopic avp producing tumors suggesting importance nav channels avp producing neuroendocrine tumors
glycogen trehalose important energy source key regulation factors development many organisms pass energy metabolism including bacteria fungi insects study glycogen metabolism pathway spodoptera exigua first cdnas glycogen synthase spoexgs glycogen phosphorylase spoexgp cloned exigua spoexgs cdna contains open reading frame nucleotides encoding protein amino acids predicted molecular mass kda spoexgp contains open reading frame nucleotides encodes protein amino acids predicted molecular mass approximately kda second northern blotting revealed spoexgs spoexgp mrnas expressed brain fat body mid gut malpighian tubules spermary tracheae exigua expression patterns spoexgs spoexgp mrnas similar fat body differed whole body different developmental stages last starvation conditions spoexgs spoexgp transcript expression rapidly decreased increasing starvation time starvation stress removed spoexgs spoexgp mrna levels lower groups starved starvation control groups treatment excessive sugar intake led higher levels spoexgs spoexgp transcripts compared control group findings provide new data tissue distribution expression patterns potential function glycogen synthase glycogen phosphorylase proteins wiley periodicals inc
phenethylamine based designer drugs prevalent within new psychoactive substance market characterisation metabolites important order identify suitable biomarkers used better monitoring consumption careful design vitro metabolism experiments using subcellular liver fractions assist obtaining reliable outcomes purposes objective study stepwise investigate vitro human metabolism seven phenethylamine based designer drugs using individual families enzymes included para methoxyamphetamine para methoxymethamphetamine methylthioamphetamine methyl benzodioxolylbutanamine benzodioxolylbutanamine aminopropyl benzofuran aminopropyl benzofuran identification structural elucidation metabolites performed using liquid chromatography quadrupole time flight mass spectrometry targeted drugs mainly metabolised cytochrome enzymes via dealkylation major pathway followed dealkylation oxidation unsubstituted atoms deamination small extent drugs largely free phase metabolism limited number metabolites found consistent existing literature phenethylamine based drugs also metabolism targeted drugs progressed slow rate reproducibility identified metabolites assessed examining formation patterns using different incubation times substrate enzyme concentrations completion work led set metabolites representative specific detection drugs intoxicated individuals also meaningful evaluation use communities wastewater based drug epidemiology elsevier rights reserved
matrix metalloproteinases mmps tissue inhibitors metalloproteinases timps thought predominant proteases protease inhibitors involved pathogenesis inflammatory bowel diseases ibd ability remodel extracellular matrix ecm response inflammatory stimuli immunomodulating effects imbalance mmps timps linked acute chronic inflammation aberrant tissue remodeling seen ibd moreover recurrent phases tissue destruction subsequent tissue repair cause serious complications ibd patients fistulas fibrosis aims review summarize current literature genetic association mrna protein expression studies regard mmps timps ibd patients various animal models including transgenic knockout mice compare biochemical molecular biological data humans obtained animal model studies iii critically evaluate translate knowledge may used practical terms understand better pathophysiology mechanisms operating ibd apply improvement clinical outcomes diagnostic prognostic therapeutic levels
gametogenesis complex process wherein germ cells develop primordial diploid cells haploid gametes understand mechanisms controlling gametogenesis identified novel germ cell specific gene gcse gcse produces two major transcripts gcse gcse length northern blotting reverse transcription polymerase chain reaction pcr analyses multiple tissues reveal gcse expressed adult testes ovaries gcse expressed adult testes female gonad development gcse expressed embryonic day adulthood specifically oocytes maintained ovulated fertilized eggs however gcse signals detected ovulated oocytes fertilized eggs adult ovary male gonad development strong gcse signals detected late pachytene spermatocytes round spermatids however gcse transcripts exist round spermatids furthermore expression gcse proteins subcellular localizations within cells stage specific gcse detected nucleus late pachytene spermatocytes meiosis gcse translocated acrosome regions spermatids maintained acrosome spermatozoa gcse colocalizes acrosin lectin peanut agglutinin golgi apparatus however gcse proteins expressed nucleus spermatids results suggest gcse proteins play roles meiosis may involved acrosome biogenesis spermiogenesis
human mitochondrial long noncoding rnas lncrnas described date analysis deep sequencing data identified three lncrnas generated mitochondrial genome confirmed expression northern blotting strand specific qrt pcr show abundance lncrnas comparable complementary mrnas nuclear encoded mitochondrial proteins involved rna processing regulate expression also identify transcript ends three lncrnas show mitochondrial rnase protein mrpp important processing transcripts finally show mitochondrial lncrnas form intermolecular duplexes abundance cell tissue specific suggesting functional role regulation mitochondrial gene expression
deoxyribonucleic acid dna plays extremely important role storing genetic messages used cellular functions living organisms however process replicating messages free errors internal external factors contribute damages dna strands damages known lesions problematic since lead mutagenesis carcinogenesis accumulation certain period time thankfully cells able synthesize various dna glycosylases target different lesions repairing restoring damaged dna original state review article aims explore variety assays used evaluate efficiency glycosylases mainly focusing uracil dna glycosylase thymine dna glycosylase oxoguanine dna glycosylase since deployed sites damages much often repair enzymes progress development dna glycosylase assays reviewed emphasis configuration operating mechanism assays discussion challenges prospects hoped article provide introductory overview current standing dna glycosylase assays opening new perspectives towards development dna glycosylase assays uses molecular biology point care elsevier rights reserved
target study pfm aspartyl aminopeptidase pfmaap aap present genome malaria parasite plasmodium falciparum pfmaap metallo exopeptidase exclusively cleaves terminal acidic amino acids glutamate aspartate expressed parasite cytoplasm may function concert aminopeptidases protein degradation example hemoglobin previous antisense knockdown experiments identified lethal phenotype associated pfmaap suggesting valid target new antimalaria therapies identify inhibitors pfmaap function fluorescence enzymatic assay developed using recombinant pfmaap enzyme fluorogenic peptide substrate glu nhmec screened molecular libraries probe production centers network collection similar compounds molecular libraries small molecule repository cathepsin ctsl enzyme based assay developed used counterscreen identify compounds nonspecific activity enzymology phenotypic assays used determine mechanism action efficacy selective potent compounds identified high throughput screening two structurally related compounds cid cid yielded micromolar potency inactive ctsl titration experiments measured assay compounds demonstrated micromolar noncompetitive inhibition pfmaap enzyme assay cid cid demonstrated potency malaria growth assays respectively
critical involvement reactive oxygen species ros physiological pathological processes cell biology makes detection assessment fundamental topic biomedical research established methodologies study ros cell biology take advantage oxidation reactions ros reduced probe reacting probe reveals presence ros either appearance colour chromogenic reaction fluorescence fluorogenic reaction however current methodologies rarely allow site specific detection ros production propose colorimetric reaction driven oxidation diaminobenzidine dab photodynamically produced ros allows fine detection ros production site introduced methodology fast easy implement permits cellular resolution submicrometric level although basic protocol proved photodynamic model ros generation principle applicable many different scenarios intracellular ros production consequence proposed methodology greatly complement techniques aiming establishing precise subcellular localization ros generation elsevier inc rights reserved
work aimed determine presence arcobacter spp shellfish determine susceptibility quinolones one hundred samples mussels clams cockles purchased different local retail shops valencia spain september june samples analyzed simultaneously culture enrichment step polymerase chain reaction pcr directly enrichment susceptibility levofloxacin ciprofloxacin isolates tested using disk diffusion test test strips method clarify mechanism quinolone resistance fragment quinolone resistance determining region gyra gene sequenced thirty seven samples positive isolates obtained culture arcobacter spp dna detected samples pcr however enrichment number positive samples increased samples yielded specific arcobacter spp pcr product addition isolates identified pcr restriction fragment length polymorphism commonly found species arcobacter butzleri isolates followed arcobacter cryaerophilus isolates arcobacter defluvii isolates three isolates butzleri resistant antibiotics mutation transition position gyra gene present three resistant isolates study confirms pathogenic arcobacters frequently found edible shellfish samples moreover first time butzleri cryaerophilus isolated cockles
oral squamous cell carcinoma aggressive cancer associated high recurrence metastasis poor treatment outcome dysregulation long non coding rnas shown promote tumor growth metastasis several cancers study investigated expression selected long non coding rnas associated cell proliferation metastasis tumor suppression oral squamous cell carcinomas normal tissues quantitative real time polymerase chain reaction long non coding rnas profiled significantly overexpressed tumors tobacco chewing history moreover long non coding rna profile similar head neck cancer datasets cancer genome atlas database linc ror regulator reprogramming implicated tumorigenesis found overexpressed undifferentiated tumors showed strong association tumor recurrence poor therapeutic response oral squamous cell carcinomas first time observed linc ror overexpression downregulation mir overexpression myc klf oct sox suggesting existence linc ror mediated competing endogenous rna network undifferentiated tumors taken together study demonstrated association linc ror overexpression undifferentiated oral tumors prognostic value predict therapeutic response
cyclophosphamide dna alkylating agent widely used chemotherapy drugs treatment various types cancer used chemotherapeutic also immunomodulatory agent inhibit expression regulatory cells tregs fibroblast activation protein alpha fap alpha expressed cancer associated fibroblasts tumor microenvironment immunotherapy based fap alpha tumor stromal antigen typically induces specific immune response targeting tumor microenvironment study evaluated efficacy previously unreported combination strategy enhance limited anti tumor effect dna vaccine targeting fap alpha results suggested administration could promote percentage splenic cells decrease proportion foxp tregs spleen tumor tissues levels immunosuppressive cytokines including cxcl also reduced meanwhile combination impair fap alpha specific immunity induced dna vaccine reduced tumor stromal factors importantly fap vaccinated mice also treated chemotherapy showed marked suppression tumor growth inhibition ratio prolongation survival time thus combination fap alpha immunotherapy chemotherapy offers new insights improving cancer therapies
background aimshiv infected people substance use disorders least likely benefit advances hiv treatment integration extended release naltrexone ntx hiv clinics may increase engagement hiv care continuum decreasing substance use aimed compare ntx treatment initiation retention safety ntx versus treatment usual tau treating opioid use disorder oud alcohol use disorder aud hiv clinics designnon blinded randomized trial ntx versus pharmacotherapy tau settinghiv primary care clinics vancouver canada chicago usa participantsfifty one hiv infected patients seeking treatment oud aud oud aud measurementsprimary outcomes ntx initiation receipt first injection within weeks randomization retention weeks secondary outcomes generated point estimates change substance use hiv viral suppression hiv rna polymerase chain reaction pcr copies safety findingstwo thirds participants assigned ntx initiated treatment retained ntx weeks comparison tau participants initiated treatment retained medication weeks mean days opioid use past days decreased tau ntx mean heavy drinking days decreased tau ntx among oud hiv suppression improved ntx tau ntx well tolerated precipitated withdrawals one serious injection site reaction conclusionsextended release naltrexone ntx feasible safe treatment opioid use disorder alcohol use disorder hiv clinics treatment initiation appears lower retention greater ntx compared treatment usual nct
potato solanum tuberosum mitochondrial cox sdh pseudo cox gene cluster previously identified heterologous hybridization using marchantia polymorpha sdh probe present study used southern blotting using sdh cox probes show sdh cox genes clustered mitochondria potato soybean pea northern blotting revealed cotranscription sdh cox potato cauliflower indicating genes clustered cauliflower putative recombination point detected downstream cox pseudogene pseudo cox potato mitochondrial dna mtdna sequence corresponds sequence appears well conserved adjacent terminals mitochondrial genes citrullus lanatus beta vulgaris arabidopsis thaliana probably involved genic rearrangements possible potato mtdna pseudo cox gene generated recombination evolution way several mitochondrial genes remains inactive partial copy functional cox also detected potato mtdna
giardia duodenalis flagellated intestinal protozoan responsible infections various hosts including humans several wild domestic animals studies correlated environmental contamination clinical infections region aim study compare groups giardia duodenalis clinical environmental sources population genetic analyses verify haplotype sharing degree genetic similarity among populations clinical environmental sources metropolitan region campinas results showed high diversity haplotypes substantial genetic similarity clinical environmental groups duodenalis demonstrated sharing giardia genotypes among different populations studied comparison veterinary human sequences led identify new zoonotic genotypes including human isolates genetic assemblage application population genetic analysis epidemiological studies allows quantification degree genetic similarity among populations giardia duodenalis different sources contamination genetic similarity giardia isolates among human veterinary environmental groups reinforced correlation clinical environmental isolates region great importance public health
ependymomas third commonest paediatric central nervous system cns tumour accounting brain tumours children management tumours seen considerable changes last two decades leading significant improvement outcomes however despite advances neurosurgical neuroimaging postoperative adjuvant therapy management tumours remain challenging recurrence occurs cases particularly complete resection achieved prior conformal radiotherapy date chemotherapeutic regimen proven significant clinical benefit predicting tumour behaviour defining robust correlates disease outcome based histopathology clinical characteristics remains suboptimal paucity cell lines failure develop ideal animal models tumours precluded better understanding oncogenic drivers undermining development targeted therapies last years breakthrough understanding molecular biology providing clues therapeutic insights clear even histopathological similarities genetically heterogeneous tumours diverse clinical outcomes rapid evolution data based genome wide dna methylation patterns identified nine molecular subgroups tumours across three anatomic compartments include supratentorial posterior fossa spinal locations recently based transcriptome profiling two subgroups group ependymoma identified distinct molecular clinical characteristics specific chromosomal aberrations review includes current management evolving molecular biology shifting paradigm treatment profile targets molecular alterations paediatric ependymoma elsevier ltd rights reserved
laboratory ethnography extended social scientist gaze day day accomplishment scientific practice reflect upon ethnographies biomedical scientific workspaces provoke methodological discussion laboratory ethnography provide less guide commentary look look draw upon empirical research stem cell laboratories animal houses teams producing robotic surgical tools musicians sonifying data science psychiatric genetics laboratory scientists developing laboratory grown meat use cases example set potential ethnographic themes worthy pursuit science epistemics extended laboratory interaction order scientific work sensory realms rending science sensible conferences performative sites spaces places temporalities scientific work
herein report synthesis activity enzyme directed immunostimulant immune cell activation mediated galactosidase either exogenously added melanoma cells covalent attachment galactopyranoside imidazoquinoline immunostimulant position critical activity resulted pro immunostimulant could selectively converted galactosidase active immunostimulant pro immunostimulant exhibited galactosidase directed immune cell activation measured transcription raw blue macrophages cytokine production tnf jawsii monocytes conversion pro immunostimulant active immunostimulant also found occur using galactosidase enriched melanoma cells culture experiments either immune cell line galactosidase enriched cells effected activation bystander immune cells
explore integration societal issues undergraduate training within life sciences skills thinking science scientific knowledge production place science society crucial context idea responsible research innovation idea became institutionalized currently well present scientific agenda developing abilities regard seems particularly relevant training life sciences new developments area somehow evoke involvement citizens engagement debate take part processes change present analysis draws implementation curricular unit focused science society dialogue optional course included biochemistry degree study plan offered university porto curricular unit designed mostly exploratory activity students enabling undertake depth study areas topics specific interest mapping topics students final papers provided means analysis became useful tool exploratory collaborative construction course discuss relevance opportunity thinking questioning science society dialogue part undergraduate training pedagogical practice deemed successful international union biochemistry molecular biology
strabismus one challenging subspecialties encountered field ophthalmology concept etiology strabismus advanced development newer imaging modalities increased understanding genetics strabismus imaging also used aid planning strabismus surgery newer horizons explored amblyopia management good old eye pad replaced ipad early detection loss stereopsis used decide timing strabismus surgery improvement binocular summation discovered benefit corrective strabismus surgery newer surgical techniques new transposition procedures developed correct complex strabismus strabismus surgeries aided adjustable sutures increased precision strabismologist new light thrown psychosocial impact strabismus present day strabismologist advanced goal ocular alignment bigger perspective regain paradise lost stereopsis
background transcription factor sox essential stages schwann cell development including myelination sox cooperates transcription factors activate expression key myelin genes schwann cells therefore context dependent pro myelination transcription factor identification genes regulated sox provide insight schwann cell biology related diseases genome wide studies successfully revealed sox target genes efforts mainly focused myelinating stages schwann cell development propose less biased approaches reveal novel functions sox outside myelination results developed stringent computational based screen genome wide identification sox response elements experimental validation pilot set predicted binding sites multiple systems revealed sox directly regulates previously unreported alternative promoter sox encodes transcription factor inhibits glial cell differentiation explored utility computational approach combining dnase seq analysis cultured schwann cells previously published sox chip seq data rat sciatic nerve remarkably analysis enriched genomic segments map loci involved negative regulation gliogenesis including sox sox notch hmga hes mycn functional studies schwann cells revealed eight loci expressed prior myelination regulated subsequent myelination seven eight loci harbor validated sox binding sites seven eight loci regulated upon repressing sox function conclusions computational strategy revealed putative novel function sox schwann cells suggests model sox activates expression genes inhibit myelination non myelinating stages schwann cell development importantly computational functional datasets present valuable study transcriptional regulation sox protein function glial cell biology
purpose review task cataloging human genetic variation relation disease rapidly approaching completion new challenge discover function disease associated genes understand pathways lead human disease propose achieving new level understanding increasingly rely use model organisms discuss advantages mouse model organism understanding human disease recent findings collection available mouse strains represents much genetic phenotypic variation found human population however unlike humans mice subjected experimental breeding protocols availability tissues allows far greater deeper level phenotyping new methods gene editing make relatively easy create mouse models known human mutations distinction genetic epigenetic inheritance studied great detail various experimental protocols enable exploration role microbiome physiology disease summary propose interdependence human model organism research technological advances new genetic screening platforms mouse greatly improved path gene discovery mechanistic studies gene function
phospholipase pld useful enzyme transphosphatidylation activity enables enzymatic synthesis various phospholipids pls many reports exist plo mediated synthesis natural tailor made pls functional head groups easily available lecithin phosphatidylcholine early studies plo mediated synthesis mainly employed enzymes plant origin later supplanted ones microorganisms especially actinomycetes many plds members pld superfamily one two copies signature sequence hxkxxxxd hkd motif primary structures plo superfamily members share common core structure thereby common catalytic mechanism catalysis proceeds via two step reaction formation phosphatidyl enzyme intermediate two catalytic residues critical reaction course one acts nucleophile functions general acid base pld engineered improve activity stability alter head group specificity identify catalytically important residues since knowledge pld enzymology constantly expanding review focuses recent advances field regarding pld catalyzed synthesis bioactive pls deeper understanding substrate recognition binding mechanism altering substrate specificity improving thermostability introduced recent results combination existing facts deepen story nature useful enzyme society biotechnology japan rights reserved
last years significant progress made understanding genetics enzymology structural components wybutosine biosynthetic pathway studies played key role expanding understanding biosynthesis revealed unexpected evolutionary ties presently unraveled enzymes catalyzing steps pathway genetically encoded guanosine wybutosine base provide ensemble amazing reaction mechanisms discussed review article
modern biotechnology one important scientific technological revolutions century increasing measurable impact society development biotechnology curriculum become important high school bioscience classrooms study monitored high school students taiwan knowledge attitudes towards biotechnology nearly two decades surprisingly knowledge biotechnology current students increased significantly students learned definitions examples biotechnology positive correlation biotechnology knowledge attitudes toward biotechnology current students study advanced biology however current students study negative correlation attitude results showed students today expressed less favorable opinions toward agricultural biotechnology despite studying however significant difference students today years ago opinions towards medical biotechnology addition current students showed greater concern involving environmental risks former students interestingly high school curriculum affect students attitudes toward genetically engineered plants animals current study also found students attitude towards animals influenced limited knowledge moral belief basis findings study suggest materials emerging animal biotechnology included high school curriculum recommend high school teachers university faculty establish collaborative framework near future international union biochemistry molecular biology
objectives tnf alpha known primary roles pathogenesis rheumatoid arthritis inflammatory diseases anti rheumatic drug chloroquine shown inhibit tnf alpha production mononuclear phagocytes examined underlying mechanisms involved chloroquine induced inhibition cytokine production methods human peripheral blood mononuclear cells monocytes macrophages monocytic thp cells stimulated lipopolysaccharide tnf alpha beta production measured elisa levels mrna measured northern blotting reverse transcription polymerase chain reaction synthesis kda tnf alpha precursor measured metabolic labelling immunoprecipitation analysis transcription rate determined nuclear run assay results tnf alpha release cells inhibited chloroquine whereas steady state level tnf alpha mrna synthesis kda tnf alpha precursor changed chloroquine contrast chloroquine induced inhibition beta release accompanied decrease steady state mrna levels transcription rates beta genes changed chloroquine whereas stability beta mrna decreased chloroquine weak base amines methylamine ammonium chloride effect production tnf alpha whereas partially blocked production beta conclusions results indicate chloroquine mediated inhibition tnf alpha beta synthesis occurs different modes lipopolysaccharide stimulated human monocytes macrophages blocks conversion cell associated tnf alpha precursor mature soluble protein whereas reduces levels beta mrna least part decreasing stability dependent mechanism
serine palmitoyltransferase one alpha oxamine synthase family enzymes catalyzes condensation reaction serine palmitoyl coa form ketodihydrosphingosine first rate determining step sphingolipid biosynthesis alpha oxamine synthase family enzymes catalytic reaction composed multiple elementary steps mechanism control steps avoid side reactions subject intensive research recent years combined spectroscopic kinetic structural studies revealed finely controlled stereochemical mechanism residue conserved among alpha oxamine synthase family enzymes plays central critical role article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
although novel antimicrobial peptides amp successfully isolated bactrocera dorsalis hendel mechanisms underlying induction peptides still elusive homolog kappa transcription factor relish designated bdrelish cloned dorsalis full length cdna bdrelish open reading frame encodes amino acids similar drosophila relish mammalian compound protein containing conserved rel homology domain ipt like plexins transcription factors domain kappa like domain four ankyrin repeats nuclear localization signal rkrrr also detected residues suggesting homology relish member rel family transcription activator proteins reverse transcription quantitative polymerase chain reaction analysis reveals bdrelish mrnas detected different quantities various tissues highest transcription level bdrelish determined fat body injection challenge escherichia coli staphylococcus aureas significantly upregulated expression bdrelish injection bdrelish dsrna markedly reduced expression bdrelish decreased transcription magnitude antimicrobial peptides individuals injected bdrelish dsrna died significantly faster rate compared control groups therefore bdrelish vital transcription amps attack invading bacteria
multiple long non coding rnas lncrnas demonstrated involved liver disease increased cyclooxygenase cox levels also reported involved progression liver cirrhosis present study correlations lncrna cox rna expression levels cox mrna expression levels liver fibrosis examined liver fibrosis induced intraperitoneal injection carbon tetrachloride ccl mice months ccl months ccl liver histopathological evaluation conducted using hematoxylin eosin masson trichrome staining hepatic expression cox lncrna cox evaluated reverse transcriptionquan titative polymerase chain reaction immunohistochemical staining compared control group fibrotic areas increased four nine times ccl group ccl group respectively lncrna cox cox upregulation observed cirrhotic liver cox mrna expression levels lncrna cox rna expression levels significantly positively correlated fibrotic area addition cox mrna expression significantly positively correlated lncrna cox expression results suggest expression cox lncrna cox increased progression liver fibrosis lncrna cox may potentially considered novel therapeutic target liver fibrosis
report trace amounts nano picomolar concentrations dapsone amiodarone reaction mixtures structurally functionally distinct heme enzymes gave increased product formation rates diverse substrates enhancements found lowered mild radical quenchers lowering well differentiated heme active site inhibitions based non specific nature activations diverse heme enzyme reactions studied generic mechanism proposed explain additive based activity enhancements heme enzymology elsevier inc rights reserved
object toxicity high concentrations nitric oxide contributes spinal cord injury sci secondary lesions low concentrations modulates nuclear factor kappa kappa activation authors investigated activity neuronal endothelial synthase nnos enos determine correlations kappa activation inducible nos inos expression soon sci methods adult male wistar rats clip based seconds sci induced spinal cords removed different intervals following evaluations assaying specific activity nnos enos electrophoresis mobility shift assay activated kappa northern blotting inos immunohistochemistry inos kappa immunofluorescence inos kappa minutes postinjury enos activity decreased significantly nnos activity hour compared levels control animals rats killed minutes sci basal kappa levels variable controls minutes injury one hour postinjury kappa activation diffuse inducible nos messenger rna localized diffusely peaking hours injury remaining stable hours postinjury immunohistochemical analysis showed diffuse inos kappa staining especially neurons inside around lesion immunofluorescence demonstrated injured neurons source kappa inos soon injury conclusions nnos enos exhibited different regulation roles soon injury nnos correlated kappa activation whereas enos may participated vascular changes injured spinal cord neurons seemed play pivotal role modulating amplifying inflammatory response injured spinal cord
purpose carbon magnetic resonance spectroscopy mrs intrinsically low nmr sensitivity often leads large acquisition volumes long scan times use higher magnetic fields overcome sensitivity limitations high radiofrequency power deposition associated proton decoupling limits achievable gain two dimensional heteronuclear single quantum coherence hsqc mrs method uses high chemical specificity mrs retaining high sensitivity detection due nature method proton decoupled spectra obtained without use high powered decoupling pulses methods novel three dimensional localized hsqc method based steam localization presented implemented low power deposition method allows variation along indirect dimension combination controlled aliasing leads acceleration relative standard nmr acquisition results artifact free high quality high sensitivity hsqc spectra obtained subjects min small volume placed leg adipose tissue complete proton decoupling achieved along indirect dimension despite absence broadband proton decoupling pulses high chemical specificity along indirect dimension allowed detection unique resonances lipids could characterized terms saturation omega omega fatty acid ratio conclusion demonstrated high quality hsqc nmr spectra acquired human adipose tissue hsqc method methodologically simple robust flexible regarding trade offs temporal spectral resolution hsqc strong potential become default method natural abundance enriched studies human metabolism vivo wiley periodicals inc
diencephalic defects underlie array neurological diseases previous studies suggested retinoic acid signaling involved diencephalic development late stages embryonic development roles mechanisms action early neural development still unclear demonstrate mice lacking enzymatic activity acetyltransferase gcn gcn hat hat previously characterized respect exencephalic phenotype exhibit significant diencephalic expansion decreased diencephalic signaling increased diencephalic wnt shh signaling using variety molecular biology techniques cultured neuroepithelial cells treated gcn inhibitor forebrain tissue gcn hat hat embryos demonstrate gcn rar alpha gamma poorly characterized protein tacc form complex nucleus binds specific retinoic acid response elements absence furthermore triggers gcn mediated acetylation tacc results dissociation tacc retinoic acid response elements leads transcriptional activation target genes intriguingly signaling defects caused vitro inhibition gcn rescued dependent mechanisms require rar beta last demonstrate diencephalic expansion transcriptional defects seen gcn hat hat mutants rescued gestational supplementation supporting direct link gcn tacc signaling developing diencephalon together studies identify novel nonhistone substrate gcn whose modification regulates previously undescribed tissue specific mechanism signaling required restrict diencephalic size early forebrain development
human gamma delta cells display potent responses pathogens malignancies particular interest expressing gamma delta cell receptor tcr incorporating tcr delta chain variable region delta activated pathogen derived phosphoantigens pags host derived pags accumulate transformed cells cells exposed aminobisphosphonates activated delta cells exhibit multiple effector functions made attractive candidates immunotherapy despite clinical trials reported mixed patient responses highlighting need better understanding delta cell biology reveal previously unappreciated functional heterogeneity delta cell compartments healthy individuals cohort identify distinct delta profiles stable time correlate age gender history phosphoantigen activation develop leaving thymus multiple analyses suggest delta profiles consist variable proportions two dominant contrasting delta cell subsets divergent transcriptional programs display mechanistically distinct cytotoxic potentials importantly individual delta profile predicts defined effector capacities demonstrated contrasting mechanisms efficiencies killing range tumor cell lines short data support patient stratification identify individuals delta profiles effector mechanisms compatible tumor killing suggest tailored delta profile specific activation protocols may maximize chances future treatment success
background assessment affective temperaments provided useful insights psychopathological understanding affective disorders conceptualization bipolar spectrum disorders temperament memphis pisa san diego temps instrument widely used research yet psychometric properties optimal factor structure unclear methods pubmed medline psycinfo embase electronic databases searched inception march validation peer reviewed studies different versions temps performed adult samples considered inclusion results twenty seven studies met inclusion criteria several versions temps validated languages across countries item self reported version temps studied version studies supported five factor solution although studies performed confirmatory factor analyses five factor solution consistently reported item version temps overall evidence indicates different versions temps adequate internal consistency reliability temps version acceptable test retest reliability methodological quality included studies varied limitations meta analysis could performed due heterogeneity settings versions temps utilized conclusions different versions temps validated across different cultures short item version temps holds promise merits investigation culture bound factors may influence expression assessment affective temperaments temps
interferon regulatory factor irf crucial cells determine respond pro inflammatory anti inflammatory fashion irf ability switch cells one pathway another highly attractive therapeutic target designed decoy peptide irfd molecular modeling software designing small molecules peptides irfd inhibited irf reduced alterations extracellular matrix improved endothelial vasodilation tight skin mouse tsk irfd recombinant irf determined binding experiments using biolayer interferometry experiments endothelial cells proliferation apoptosis unchanged using increasing concentrations irfd tsk mice treated irfd subcutaneously irf icam expressions decreased irfd treatment endothelial function improved assessed vasodilation facialis arteries tsk mice treated irfd compared tsk mice without irfd treatment transcription factor irf traffics cytosol nucleus translocation assessed immunohistochemistry cardiac myocytes cultured different cardiac extracellular matrices irfd treatment tsk mouse resulted reduced number irf positive nuclei comparison animals without irfd treatment findings demonstrate important role irf plays inflammation fibrosis tsk mice
dermatophyte species isolation identification clinical samples still difficult take long time identification molecular epidemiology dermatophytes commonly isolated clinical laboratory turkey repetitive sequence based pcr rep pcr assessed comparing results reference identification total dermatophytes isolated various clinical specimens patients superficial mycoses kayseri patients hatay studied identification dermatophyte isolates based reference identification rep pcr using diversilab system biomerieux genotyping dermatophyte isolates different patients determined rep pcr identification dermatophyte isolates agreement rep pcr conventional methods dermatophyte strains belonged four clones determined use rep pcr dermatophyte strains clone showed identical patterns respect region conclusion rep pcr appears useful evaluation identification clonal relationships trichophyton rubrum species complex trichophyton mentagrophytes species complex isolates similarity diversity isolates may assessed according different regions rep pcr
positive selection system developed agrobacterium mediated trasnsformation using hypocotyl segments aseptic seedlings chinese cabbage explants regenerated plants kanamycin resistance obtained transformed plants cryia gene confirmed southern blotting analysis indicating integration transgene cabbage genome majority transgenic plants single copy inserted cryia gene leaf section bioassays showed resistance larvae diamondback moth cryia transgenic cabbage significantly enhanced inheritance patterns transgene offspring transgenic cabbage investigated using pcr analysis kanamycin resistance test young seedling leaves
thyroid hormones ths crucial normal vertebrate development one obligate morphogen drives amphibian metamorphosis however contrary metamorphosing vertebrates lampreys exhibit sharp drop serum early metamorphosis anti thyroid agents potassium perchlorate kclo induce metamorphosis type deiodinase enzyme key regulator availability amphibian metamorphosis set determine may involved regulation lamprey metamorphosis thyroid homeostasis cloned petromyzon marinus cdna includes entire protein coding region selenocysteine sec codon northern blotting indicated lamprey mrna longest reported date using real time pcr showed intestinal hepatic mrna levels elevated prior early stages metamorphosis declined dramatically low levels sustained remainder metamorphosis data consistent previously reported changes serum levels deiodinase activity treatment larvae either kclo significantly affected mrna levels intestine liver mrna levels metamorphosis response thyroid challenges suggest may function regulation levels lamprey metamorphosis maintenance homeostasis elsevier inc rights reserved
major topic interest human prehistory large scale genetic structure modern populations outside africa established demographic models developed capture relationships among small numbers populations within particular geographical regions constructing phylogenetic tree gene flow events wide diversity non africans remains difficult problem report model provides good statistical fit allele frequency correlation patterns among east asians australasians native americans ancient western northern eurasians together archaic human groups model features primary eastern western bifurcation dating least years ago australasians nested inside eastern clade parsimonious set admixture events results still represent simplified picture provide useful summary deep eurasian population history serve null model future studies baseline discoveries
conditional expression target gene zebrafish development powerful approach elucidate gene functions tetracycline controlled systems successfully used modulation gene expression mammalian cells lines zebrafish carrying systems currently available study generated stable transgenic zebrafish line ubiquitously expressed second generation reverse tet transactivator rtta southern blotting analysis high throughput genome sequencing verified single copy rtta gene stably integrated zebrafish genome induction doxycycline dox strong green fluorescent protein gfp seen rtta transgenic eggs injected ptre egfp plasmids fluorescent signal gradually decreased withdrawal dox disappeared however leaky expression gfp undetectable dox induction additionally transgenic embryos expressing rtta exhibited obvious defects morphological phenotypes hatching behavior expression patterns developmental marker genes suggesting rtta little effect development transgenic zebrafish moreover expressed dickkopf dkk ptre dkk injected embryos led alterations expression marker genes associated wnt signaling thus rtta transgenic zebrafish utilized dissect functions genes temporal manner
intimate connection telomerase regulation human disease well established molecular basis telomerase regulation highly complex entails multiple layers control major target enzyme regulation catalytic subunit tert rna subunit telomerase also implicated telomerase control addition alterations gene dosage alternative isoforms core telomerase components described finally telomerase localization recruitment telomere enzymology chromosome terminus subject modulation review summarize recent advances understanding fundamental mechanisms telomerase regulation elsevier rights reserved
colorectal carcinoma crc malignant solid tumor arising large intestine associated increasing incidence poor prognosis understanding molecular mechanisms underlying crc may contribute development novel effective therapeutic strategies micrornas mirs including mir reported associated etiology biology crc however molecular mechanisms mir affect crc remain fully elucidated present study used multidisciplinary approach involving reverse transcription quantitative polymerase chain reaction northern blotting mtt assay cell cycle progression analysis immunoblotting animal experiments determine possible targets mir crc cells mir found overexpressed crc tissue samples compared paired normal colon tissue samples addition inhibition mir induced deceleration crc cell proliferation inactivation wnt catenin signaling pathway mir suppression also reduced growth crc xenografts animal model hmg box transcription factor hbp identified novel target mir mediated effect crc via wnt catenin pathway furthermore patients crc exhibiting higher serum levels mir exhibited reduced survival rates conclusion present study demonstrated mir may contribute progression growth crc enhancing wnt catenin pathway hbp associated mechanism therefore mir may considered promising therapeutic target treatment crc
human cytomegalovirus hcmv leading infectious cause birth defects may lead severe lethal diseases immunocompromised individuals several hcmv strains identified widely applied research isolate china characterized present study isolated characterized sequenced first chinese hcmv clinical strain han constructed novel functional hcmv infectious clone han bac hcmv han isolated urine sample chinese infant multiple developmental disorders expresses hcmv specific proteins contains representative hcmv genome minor differences compared strains homologous recombination using mini derived bac vector pus infectious clone han bac constructed containing representative viral genes across hcmv genome insertion site orientation bac sequence confirmed restriction enzyme digestion southern blotting reconstituted recombinant virus hanbac expresses typical viral proteins pattern wild type han also displayed similar growth kinetics wild type han identification first clinical hcmv strain china construction infectious clone greatly facilitate pathogenesis studies vaccine development china med virol wiley periodicals inc
transfusion blood cell components frequent therapeutic arsenal globally safe even safe present residual clinical manifestations principally inflammatory nature rare clinical hazards manifest acute inflammation symptoms various origin linked conflicting undesirable biological material accompanying therapeutic component infectious pathogen pathogenic antibody unwanted antigen allergen general feature subtler less visible essentially consists alloimmunization febrile non hemolytic transfusion reaction present essay aims present updates hematology immunology help understand subclinical inflammation underlies alloimmunization circumstances characteristic red blood cells even frequently platelets contribute inflammatory mediators modern transfusion medicine makes sustained efforts limit inflammatory hazards efforts successful one clear view element role
based significant differences resistance sclerotinia sclerotiorum two brassica napus cultivars zhongr zhongyou near isogenic lines nils established resistance differences zhongyou progeny fifth generation cross zhongyou zhongr zhongyou successive backcross parent displayed cdna aflp differential transcripts derived fragments tdfs full length cdna open reading frame orf open box named rsk identified race resistance related fragment zhongyou encoded protein amino acid residues contained putative extracellular domain transmembrane domain intracellular domain analysis deduced amino acid sequence rsk revealed high homology arabidopsis thaliana kinase involved protein binding conserved region lrr indicating might member leucine rich repeats ribonuclease inhibitor like subfamily dna sequences without intron also identified zhongyou respectively expression analysis showed rsk might play role disease resistance pathways
production renewable bioenergy necessary meet rising global fossil fuel demands members marine microalgae genus nannochloropsis produce large quantities oils triacylglycerols tags genus regarded one promising biodiesel production recent genome sequencing transcriptomic studies nannochloropsis provided foundation understanding oleaginous trait mechanism underlying oil accumulation remains clarified report nannochloropsis knock strains four extraplastidic lysophosphatidic acid acyltransferases lpat lpat catalyze major novo biosynthetic step tags membrane lipids found four lpats differently involved lipid metabolic flow nannochloropsis double knock outs among lpats revealed pivotal lpats tag biosynthesis localization analysis indicated stramenopile specific lpats lpat lpat associated tag synthesis reside perimeter lipid droplets homologous region found lipid droplet associated proteins however lipid droplets organelle found nearly organisms recently shown play important roles cellular metabolism signaling results provide direct evidence importance perimeter lipid droplet tag synthesis addition known role maintaining tag stability findings suggest oleaginous trait nannochloropsis enabled acquisition lpats perimeter lipid droplets
cdna amphiarf encoding novel member arf family first time identified gut cdna library amphioxus branchiostoma becheri tsingtauense deduced amino acid sequence includes motifs involved gtp binding dvgg nkqd sak hydrolysis gxdxxgk glycine position terminal myristoylation characteristic arfs however amino acid terminal extension positions found arf family previously described including arf like proteins suggests amphiarf new member arf family also supported phylogenetic analysis highly likely extended terminal amphiarf novel addition occurring cephalochordate vertebrate split northern blotting analysis revealed amphiarf transcript present tissues examined consistent involvement arfs fundamental role like vesicular trafficking proteins
context marine cyanobacteria offer robust resource natural products drug discovery due secondary metabolites produce objective identify novel cyanobacterial compounds exhibit cns psychoactive effects materials methods cyanobacteria collected las perlas archipelago panama subjected dichloromethane methanol extraction fractionation column chromatography screened affinity panel cns targets ethyl acetate methanol fraction one cyanobacterial extract subjected hplc major peak isolated dose per animal tested mice using behavioral assays included forced swim open field formalin tests results shown bind serotonin htc receptor known target depression pain treatment showed inhibition binding mesulergine value show inhibition binding greater receptors tested decreased immobility time first minute tail suspension test increased time distance number entries center region first half open field test increased overall nocifensive behaviors formalin test discussion conclusion overall manipulating htc receptor receptor specific ligands derived cyanobacteria altered pain depression anxiety like behaviors illustrating importance receptor affective behaviors results demonstrate potential cyanobacteria source cns active compounds
mhc class mhcii processing pathway presents peptides derived exogenous membrane bound proteins cells several studies shown glycopeptides necessary modulate cell recognition though glycopeptide structures cases generally unknown present total glycopeptides three melanoma cell lines one matched ebv transformed line found melanoma cell lines glycosylation detected diverse comprised different glycoforms used molecular modeling demonstrate complex glycopeptides capable binding mhc may interact complementarity determining regions finally present first evidence disulfide bonded peptides presented icil first large scale study sequence glyco disulfide bonded mhcii peptides surface cancer cells could represent novel avenue tumor activation immunoevasion
postprandial studies investigated response single meal yet ingestion sequential meals typical western society aim review explain natural stable isotope tracers fatty acids used investigate metabolism dietary fat single multiple meals focus vivo measurements adipose tissue metabolism stable isotope tracers combined arteriovenous difference measurements specific measurements metabolic flux across tissues made found adipose tissue net importer dietary fat following single test meal day typical three meal eating pattern dietary fat cleared plasma fatty acids spillover plasma contribute postprandial plasma nefa concentrations therefore plasma nefa concentrations meal reflect balance intracellular extracellular lipolysis adipose tissue balance altered acute ingestion fructose enzyme lipoprotein lipase key modulator fatty acid flux adipose tissue rate action severely diminished obese men conclusion vivo studies human metabolism quantify way adipose tissue fatty acid trafficking modulates plasma lipid concentrations implications flux fatty acids tissues susceptible ectopic fat deposition liver muscle
mechanism antihypertensive lipid lowering drugs human organism still fully understood new insights drugs action provided metabolomics driven approach offers detailed view physiological state organism report metabolome wide association study metabolites human serum participants kora cooperative health research region augsburg study population intent find variations metabolite concentrations related intake various drug classes based associations found generate new hypotheses target well target effects drugs total found significant associations drug classes investigated beta blockers associations angiotensin converting enzyme ace inhibitors four assoc diuretics seven assoc statins ten assoc fibrates nine assoc top hits pyroglutamine phenylalanylphenylalanine pseudouridine arachidonoylglycerophosphocholine hydroxyisobutyrate respectively beta blockers observed significant associations metabolite concentrations indicative drug side effects increased serotonin decreased free fatty acid levels intake ace inhibitors statins associated metabolites provide insight action drug target association ace inhibitors des arg bradykinin aspartylphenylalanine substrate product drug inhibited ace intake statins reduce blood cholesterol levels resulted changes concentration metabolites biosynthesis well degradation cholesterol fibrates showed strongest association hydroxyisobutyrate might breakdown product fenofibrate thus possible marker degradation drug human organism analysis diuretics showed heterogeneous picture difficult interpret taken together results provide basis deeper functional understanding action side effects antihypertensive lipid lowering drugs general population
objective study dynamics expression localization opioid receptor mor human endometrium throughout menstrual cycle design analysis human endometrial samples different menstrual cycle phases menstrual early midproliferative late proliferative early secretory midsecretory late secretory reverse transcription polymerase chain reaction western blot immunohistochemistry setting academic research laboratory patient women human reproduction unit cruces university hospital fulfilling following criteria normal uterine vaginal ultrasound absence endometriosis polycystic ovary syndrome implantation failure recurrent miscarriage history opioid drug use intervention endometrial samples women categorized groups menstrual cycle phases menstrual early midproliferative late proliferative early secretory midsecretory late secretory main outcome measure mor gene protein expression localization different compartments human endometrium different stages menstrual cycle result expression mor mrna protein changed throughout cycle human endometrium mor expression increased proliferative phase decreased secretory one lower values found menstruation maximum values around time ovulation small variations endometrial compartment found conclusion presence mor human endometrium dynamic changes menstrual cycle suggest possible role opioids reproduction events related human endometrium endometriosis american society reproductive medicine
prediction biochemical endpoints important task modern medicinal chemistry cell biology nanotechnology simplified molecular input line entry system smiles tool representation molecular structure particular smiles used build quantitative structure property activity relationships qsprs qsars qspr qsar tool predict endpoint new substance examined experiment quasi smiles representation eclectic data related endpoint contrast traditional smiles representation molecular structure quasi smiles representation conditions principle molecular structure also taken account quasi smiles work quasi smiles used build model cell viability impact metal oxides nanoparticles means coral software http www insilico coral eclectic data quasi smiles molecular structure metals oxides concentration nanoparticles iii size nanoparticles significance different eclectic facts estimated mechanistic interpretation domain applicability model suggested statistical quality models satisfactory three different random distribution available data training sub training calibration validation sets
background known difference immune response syphilis hiv infected uninfected individuals methods prospectively recruited patients new diagnosis syphilis tested plasma ifna ifn gamma beta mcp mip alpha mip beta baseline pre treatment months following therapy results total hiv infected primary secondary syphilis pss latent syphilis hiv uninfected pss cases syphilis hiv infected controls included study baseline visit compared control group concentrations significantly elevated hiv infected uninfected groups level significantly higher hiv infected compared hiv uninfected pss group iqr iqr hiv infected pss group hiv infected hiv uninfected pss groups mip raised compared controls levels decreased return control baseline values months hiv infected pss hiv uninfected pss conclusion pss hiv infected individuals characterized increase inflammatory anti inflammatory cytokines increase greater hiv infected uninfected individuals work required ascertain part immunological profile correlates adverse outcomes serofast syphilis neurosyphilis hiv infected individuals
purpose review epilepsy genetics shifting academic pursuit gene discovery clinical discipline based molecular diagnosis stratified medicine consider latest developments epilepsy genetics review gene discovery epilepsy influencing clinical classification epilepsy informing new therapeutic approaches drug discovery recent findings recent studies highlighting importance mutation gaba receptors nmda receptors potassium channels protein coupled receptors mammalian target rapamycin pathway chromatin remodeling discussed examples precision medicine epilepsy targeting gain function mutations kcnt grina grind scna presented potential reasons paucity examples precision medicine loss function mutations non ion channel epilepsy genes explored highlight systems genetics gene network analyses suggested pathways disrupted epilepsy overlap neurodevelopmental traits including human cognition review network based computational approaches applied epilepsy drug discovery summary living unparalleled era epilepsy gene discovery advances clinical care progress already materializing improved clinical diagnosis stratified medicine application targeted drug repurposing based single gene defects shown promise epilepsy arising gain function mutations ion channel subunit genes important barriers remain translating approaches non ion channel epilepsy genes loss function mutations gene network analysis offers opportunities discover new pathways epilepsy decipher epilepsy relationship neurodevelopmental traits frame new approach epilepsy drug discovery
study superbinary vector constructed evaluate potential twin dna system generating selectable marker free transgenic chrysanthemum plants first dna pcambia vector contained hygromycin phosphotransferase hpt selectable marker gene second dna carried beta glucuronidase gene uida featuring gene interest two dna regions placed adjacent intervening region vector used transform transversal thin cell layers thick internodal stem segments chrysanthemum via agrobacterium mediated transfer putative transgenic plants obtained analyzed presence integration transgene using polymerase chain reaction amplification southern blotting primary cotransformation frequency calculated total hpt resistant gus positive plants evaluated segregation next generation among approximately carried transgene overall two dna system appeared useful approach generate marker free transgenic chrysanthemum plants thereby eliminating public concerns regarding proliferation antibiotic herbicide resistance genes environment
study explored role fibulin osteosarcoma progression possible signaling pathway involved fibulin mrna protein expression normal tissue benign fibrous dysplasia osteosarcoma osteosarcoma cell lines normal osteoblastic cell line hfob different invasive subclones evaluated immunohistochemistry ihc immunocytochemistry icc real time reverse transcriptase polymerase chain reaction real time qrt pcr using vitro functional assays analyzed invasive proliferative abilities different osteosarcoma cell lines subclones differing invasive potential assess role fibulin invasion metastasis osteosarcoma cells lentiviral vectors fibulin small hairpin rna shrna plvx fibulin constructed used infect highly invasive low invasive subclones osteosarcoma cell lines effects fibulin knockdown upregulation biological behavior osteosarcoma cells investigated functional vitro vivo assays results revealed fibulin expression upregulated osteosarcoma positively correlated low differentiation lymph node metastasis poor prognosis fibulin also found expressed highly invasive cell lines highly invasive subclones fibulin could promote osteosarcoma cell invasion metastasis inducing emt via pik akt mtor pathway collectively findings demonstrate fibulin promoter osteosarcoma development progression suggest novel therapeutic target future studies
ras signaling central many cellular processes sos proteins promote ras activation investigate role sos proteins cell biology crossed sosf sos mice cre transgenic mice previously reported effect mutations cell signaling cell migration unexpectedly observed nodules joints greater mutant mice months age especially carpal joints mice aged also displayed joint stiffness hind limb paralysis lameness histological analysis indicated abnormal growth joints originated dysplastic chondrocytes second harmonic generation imaging carpal nodules revealed nodules encased rich collagen fibrous networks nodules formed mice also deficient rag indicating conventional cells undergo rearrangement cell antigen receptor required phenotype cre expression subset cells either immune lineage cells non conventional cells non immune lineage cells chondrocytes likely mediates dramatic phenotype observed study disruptions genes ras signaling pathway especially likely cause phenotype results also serve cautionary tale intending use cre transgenic mice specifically delete genes conventional cells
review article covers english written pubmed listed review articles original studies published january april dealing toxicodynamics toxicokinetics new psychoactive substances compounds covered include stimulants entactogens synthetic cannabinoids tryptamines nbomes phencyclidine like drugs benzodiazepines opioids first overview discussion provided timely review articles followed overview discussion recent original studies sections concluded opinion latest developments review shows nps market still highly dynamic data published toxicodynamics toxicokinetics hardly keep pace appearance new entities however data available helpful understand predict nps may behave severe intoxication currently best documented parameter vitro metabolism nps prerequisite allow detection nps biological matrices cases acute intoxications chronic consumption however additional data chronic toxicity still lacking
objective study measure effect selection tolerance severity aleutian disease lesions mink sensitivity specificity antibody detection blood counter immunoelectrophoresis ciep relative presence aleutian mink disease virus amdv spleen pcr naturally infected farmed mink also estimated carcasses sero positive ciep black mink farms nova scotia canada sero negative ciep mink farms collected pelting time total ciep mink three farms animals selected tolerating almost years severity lesions assessed histopathological examination kidneys lungs heart brain liver scale sensitivity specificity ciep relative pcr respectively ciep mink pcr positive could one reasons failure virus eradication ciep canada ciep tolerant ciep animals greater odds showing lower lesion severity respectively ciep animals ciep mink slightly higher chance showing lower lesion severity odds ratio compared tolerant ciepp mink results suggested tolerant mink significantly reduced severity lesions despite anti viral antibodies carrying virus authors published elsevier ltd
tumor necrosis factor alpha induced protein tnfaip transcription factor nuclear factor kappa inducible antiapoptotic oncogenic molecule associated prognosis several human malignancies however relationship tnfaip prognosis invasive ductal carcinoma idc breast remains unclear tnfaip expression evaluated using real time polymerase chain reaction pcr western blot analysis fresh idc tissues immunohistochemical analysis paraffin embedded idc tissues real time pcr western blot analysis demonstrated tnfaip messenger rna protein regulated idc tissues compared paired adjacent noncancerous tissues immunohistochemistry revealed tnfaip expression significantly correlated clinicopathological factors including axillary lymph node metastasis advanced tnm stage high histologic grade molecular subtype postoperative recurrence univariate multivariate logistic regression analyses demonstrated tnfaip overexpression strongly associated axillary lymph node metastasis odds ratio confidence interval moreover kaplan meier analysis indicated idc patients high tnfaip expression shorter survival time low tnfaip expression multivariate analysis indicated tnfaip independent prognostic factor overall survival disease free survival idc respectively therefore tnfaip overexpression may contribute tumor progression may novel prognostic biomarker patients idc elsevier inc rights reserved
effect bacillus thuringiensis toxin cryac behaviour laboratory selected resistant population fold helicoverpa armigera cotton evaluated compared non cotton cryac toxin incorporated semi synthetic diet resistant larvae reared cotton survival slower development results suggest cryac cotton exerts greater toxic effect terms larval mortality coupled decline larval growth rate compared semi synthetic diet
proteases constitute largest enzyme family yet biological roles obscured rudimentary understanding cellular substrates human caspases play crucial roles inflammation cell differentiation drive terminal stages cell death recent terminomics technologies begun enumerate diverse substrates individual caspases cleave complex cell lysates clear many caspases shared substrates however data exist catalytic efficiencies kcat substrates critical understanding true substrate preferences study use quantitative determine catalytic efficiencies hundreds natural protease substrates cellular lysate two understudied members caspase caspase substrates new cleavage rates vary fold compare cleavage rates common substrateswith found caspase caspase caspase involved apoptosis little correlation catalytic efficiencies among five caspases suggesting unique set preferred substrates thus specialized roles previously understood synthesized peptide substrates basis protein cleavage sites found similar catalytic efficiencies protein peptide substrates data suggest rates proteolysis dominated local primary sequence less tertiary protein fold studies highlight global quantitative rate analysis posttranslational modification enzymes complex milieus native substrates critical better define functions relative sequence events
marine turtles highly migratory species establish multiple connections among distant areas oceanic migration corridors improve knowledge connectivity atlantic green turtles chelonia mydas analysed genetic composition contribution juvenile aggregations one world largest rookeries poilao island guinea bissau amplified mitochondrial dna mtdna control region sequences population containing similar haplotypes used previous studies haplotype dominant divided variants whole considered identified haplotype found previously juvenile foraging grounds argentina brazil equatorial guinea poilao breeding population genetically different others atlantic fst range extensive many many mixed stock analysis msa including nesting populations samples foraging grounds samples supported strong contribution poilao west africa also southwest atlantic findings particular strong connectivity within west africa illegal harvesting still common motivate conservation partnerships population protection effectively extended life stages study expands knowledge migration patterns connectivity green turtles atlantic evidences importance larger sample sizes emphasizes need include finely resolved markers msas genetic sampling west african foraging grounds resolve connectivity puzzle species
objective study assess effect dietary probiotics rumen fermentation bacterial community dairy calves twelve holstein calves randomly allocated three treatments basal diet basal diet supplemented lactobacillus plantarum basal diet supplemented mixture lactobacillus plantarum bacillus subtilis lbs milk replacer fed calves days age starter alfalfa hay offered libitum days age respectively orts weighted daily ruminal fluid sampled days age determine rumen fermentation characteristics bacterial community analyzed denaturing gradient gel electrophoresis dgge number certain bacteria quantified real time polymerase chain reaction ratio total dry matter intake average body wieght higher control dgge fingerprint ribosomal rna gene affected blended probiotics days age number ruminococcus albus lower lbs treatment oral administration probiotics affected rumen bacterial community numbers cellulolytic bacteria decreased
canine influenza contagious respiratory disease dogs caused two subtypes canine influenza virus civ currently inactivated influenza vaccines itvs available prevention civs historically live attenuated influenza vaccines laivs shown produce better immunogenicity protection efficacy iivs engineered civ law using internal genes previously described civ law master donor virus mdv surface genes circulating civ strain findings show civ law replicates efficiently low temperature replication impaired higher temperatures civ laiv attenuated vivo induced better protection efficacy mice challenge wild type civ commercial civ iiv first description laiv prevention civ dogs
objectives human cytomegalovirus hcmv infection induces production specific autoantibodies may promote inflammation tissue damage hcmv infection suggested cause biliary atresia little known role forms neonatal cholestasis studied serum levels specific autoantibodies mothers infants neonatal cholestasis different causes including mothers healthy term infants without cholestasis well healthy blood donors methods using fluorescence activated cell sorting measured specific autoantibody levels serum mentioned groups addition effect serum mothers infants neonatal cholestasis tested differentiation monocytes macrophages results specific autoantibodies found mothers infants neonatal cholestasis mothers infants without cholestasis healthy blood donors associated hcmv seropositivity sera mothers infants forms neonatal cholestasis inhibited differentiation monocytes macrophages dependent specific autoantibodies conclusions significantly higher frequency specific autoantibodies mothers infants neonatal cholestasis forms compared mothers healthy infants without cholestasis suggests association prove pathogenic presence specific autoantibodies correlate hcmv igg serostatus suggesting complicated mechanism possibly reflects active hcmv infection individuals studies needed elucidate whether autoantibodies contribute development cholestasis represent epiphenomenon
method determining mrna half lives polymorphic fungus candida albicans described employs growth defined medium inhibition transcription thiolutin quantitative northern blotting method effective cai strains albicans mrnas wide variety decay rates steady state abundances range half lives detected min shows method effective mrnas widely varying half lives mrna decay rates obtained compared orthologous mrnas saccharomyces cerevisiae procedure work broad range albicans strains adapted fungal species
high throughput sequencing identified large number sense antisense transcriptional pairs indicates genes transcribed directions recent reports demonstrated many antisense rnas especially incrna long non coding rna interact sense rna forming rna duplex many methods rna sequencing northern blotting rnase protection assays strand specific pcr used detect anti sense transcript gene transcriptional orientation however applications methods constrained extent high cost difficult operation inaccuracy especially regarding analysis substantial amounts data thus developed easy method detect validate complicated rnas primarily took advantage strand specificity pcr single strand specificity endonuclease analyze sense antisense transcripts four known genes including mouse beta actin tsix xist antisense rna chicken lxn latexin gfm elongation factor mitochondrial used establish method four genes well studied transcribed positive strand negative strand strands dna respectively represented possible cases results indicated method easily distinguish sense antisense sense antisense transcriptional pairs addition used verify results high throughput sequencing well analyze regulatory mechanisms rnas method improve accuracy detection mainly used analyzing single gene low cost
graft versus host disease gvhd serious complication associated allogeneic hematopoietic cell transplantation allo hct antithymocyte globulin atg widely used prior allo hct gvhd prevention though evidence efficacy remains unclear therefore identified nine randomized controlled trials rcts enrolling patients atg group non atg group conduct meta analysis actions atg allo hct relative risk risk ratio confidence interval calculated outcome rabbit atg reduced overall acute gvhd grade iii agvhd overall chronic gvhd extensive cgvhd without increased risk relapse contrast horse atg reduce overall agvhd cgvhd atg marginally reduced day transplant related mortality without compromising overall survival increased risk infections studies required evaluate optimal dosage formulation atg different conditioning regimens transplantation varied sources graft donor
stimulation immune responses common tool invertebrate studies examine efficacy mechanisms immunity stimulation based injection non pathogenic particles insects particles detected immune system induce production immune effectors focus stimulation melanization response mosquito anopheles gambiae melanization response results encapsulation foreign particles parasites dark layer melanin stimulate response mosquitoes inoculated beads thoracic cavity using microcapillary glass tubes mosquitoes dissected retrieve beads degree melanization bead measured using image analysis software beads pathogenic effects parasites capacity evade suppress immune response injections way measure immune efficacy impact immune stimulations life history traits fecundity longevity exactly directly studying host parasite interactions interesting tool study immunity evolutionary ecology
wound age evaluation one challenging issues forensic pathology first minutes hours standard histological examination may determine whether wound inflicted pre post mortem period red blood cell infiltration classically considered sign vital reaction several studies shown extravasation blood cells may also occur death used reliable marker diagnosis wound vitality numerous studies wound vitality available literature evaluated markers involved coagulation inflammation using various methods enzymology molecular biology immunohistochemistry update first introduce methodological principles review main studies available literature immunohistochemistry seems valuable method given easy application possibility analyse localization molecules interest markers promising tnf alpha tgf alpha tgf beta prior application daily practice early results need confirmed studies conducted independent teams integrating multiple controls notably antibodies tested numerous postmortem wounds indeed critical risk overexpression post mortem wounds present promising markers later invalidated post mortem false positivity finally optimal sensitivity specificity values could probably reached combining several markers validated large groups pre post mortem wounds
endometrial carcinoma common cancer female genital tract review article discusses usefulness molecular techniques classify endometrial carcinoma proposal molecular classification neoplasms integrate morphological features tumors reason start current histological classification endometrial carcinoma discussing correlation genotype phenotype significant recent improvements comment possible flaws classification discussing also value molecular pathology improving including interobserver variation pathologic interpretation high grade tumors third discuss importance applying tcga molecular approach clinical practice also comment impact intratumor heterogeneity classification finally discuss briefly usefulness tcga classification tailoring immunotherapy endometrial cancer patients suggest combining pathologic classification surrogate tcga molecular classification high grade endometrial carcinomas option improve assessment prognosis elsevier inc rights reserved
uric acid primary end product purine derivatives human metabolism excessive production uric acid may lead gout hyperuricemia kidney disorder different analytical methods uric acid colorimetry commercial enzyme electrode commercially available uric acid kit used widely main purpose research develop screen printed electrode based uric acid biosensor using gelatin immobilized uricase enzyme extracted comamonas btua enzyme catalyzed oxidation uric acid presence oxygen producing allantoin hydrogen peroxide linearity standard curve concentration ranges molar satisfactory could used quantitative determination uric acid human serum samples limit detection lod sensitivity evaluated uric acid one modified electrode could used six measurements accuracy days developed biosensor easy use inexpensive sensitive reliable
designed microfluidic system comprising microfluidic channels pumps valves enable fabrication cellular multilayers order reduce labor inputs coating extracellular matrices onto adhesive cells centrifugation system used fabricate nanometer sized layer layer films extracellular matrices monolayer myoblasts use microfluidic system allowed fabrication cellular multilayers designed microfluidic channels commercial culture dishes thickness fabricated multilayer using microfluidic system higher multilayer formed centrifugation cellular multilayer fabrication less laborious mechanical force cell reduced novel system applied tissue modeling cell biology studies pharmaceutical assays quantitative analyses mechanical chemical stimuli applied multilayers
background spasmodic dysphonia focal dystonia characterized involuntary spasms laryngeal muscles occur selectively speaking although hereditary trends reported patients causative etiology spasmodic dysphonia unclear influences various phenotypes genotypes disorder pathophysiology poorly understood study examined structural alterations cortical gray matter white matter integrity relationship different phenotypes putative genotypes spasmodic dysphonia elucidate structural component complex pathophysiology methods eighty nine patients spasmodic dysphonia underwent high resolution magnetic resonance imaging diffusion weighted imaging examine cortical thickness white matter fractional anisotropy adductor versus abductor forms distinct phenotypes sporadic versus familial cases distinct genotypes results phenotype specific abnormalities localized left sensorimotor cortex angular gyrus white matter bundle right superior corona radiata genotype specific alterations found left superior temporal gyrus supplementary motor area arcuate portion left superior longitudinal fasciculus conclusions findings suggest phenotypic differences spasmodic dysphonia arise level primary associative areas motor control whereas genotype related pathophysiological mechanisms may associated dysfunction regions regulating phonological sensory processing identification structural alterations specific disorder phenotype putative genotype provides important step toward future delineation imaging markers potential targets novel therapeutic interventions spasmodic dysphonia international parkinson movement disorder society
horseradish peroxidase hrp variety potential biotechnological applications still isolated horseradish root mixture different isoenzymes different biochemical properties increasing demand preparations high amounts pure enzyme recombinant production limited lack glycosylation escherichia coli different glycosylation patterns yeasts affects stability parameters goal study increase stability non glycosylated enzyme produced coli toward hydrogen peroxide via mutagenesis asparagine one glycosylation sites enzyme mutated via saturation mutagenesis using megaprimer method modification miniaturization previously described protocols enabled screening library propagated coli xjb library mutants screened stability toward hydrogen peroxide azinobis ethylbenzthiazoline sulfonate reducing substrate asngly mutant top variant screening exhibited fold increased stability toward hydrogen peroxide twice improved thermal stability compared recombinant hrp moreover substitution led fold improvement catalytic efficiency phenol aminoantipyrine constructed mutant represents stable biocatalyst may find use medical diagnostics biosensing bioprocesses international union biochemistry molecular biology inc volume number pages
work aim comparing method hybridization digoxigenin chemiluminescent detection system method radioactive labeled cultivars used susceptible florunner resistant coan genomic dna isolated young leaves southern blotting analysis conducted using rflp probe detection probe labeled digoxigenin sensitive labeled radioactivity however advantages method radioactive due safe method present reduced costs demarcation method based digoxigenin chemiluminescent detection highly recommendable
nutrition research process addressing series questions related future diet health humans respect response diet humans must fed differently according differences genetics metabolic needs differences self evident individual care givers methods must developed measure basis differences humans current sets diagnostic biomarkers disease appropriate sufficient distinguish appropriate diets humans optimal metabolic health metabolites must measured differences human metabolism resolvable become diseased small subset metabolic markers provide indication intended unintended effects diets relate overall metabolism comprehensive metabolic analyses metabolomics must put place ensure aspects health accurately assessed inappropriate dietary choices accelerating development chronic metabolic disease threatening overwhelm public health ability manage nutrition food sciences need collaborate scientific disciplines develop implement metabolic assessment technologies assemble annotated databases metabolite profiles humans thus building knowledge needed link metabolism diet health biochemical physiological research must guided define mechanisms diet interacts metabolism different individuals integrating metabolism genetic dietary variables affect health role nutrition sciences integrating personal nutritional value food key values safety quality comfort delight convenience affordability role food science time two fields address common problem metabolic health coordinated solutions
knowledge molecular mechanism implicated smokeless tobacco associated oral carcinogenesis meager attempt identify genes modulated recently reported establishment oral epithelial cell culture amol iii oral hyperplasia hyperkeratosis khaini consumer herein aimed identify novel molecular targets khaini amol iii cells using differential display fourteen novel differentially expressed genes upregulated downregulated identified differentially expressed cdnas amplified cloned sequenced confirmed reverse northern blotting mainly genes components transcriptional machinery cell cell adhesion signaling growth transformation processes important novel molecular targets identified included activated leucocyte cell adhesion molecule alcani cdp diacylglycerol inositol phosphatidyl transferase phosphatidylinositol synthase cdipt important enzyme phosphatidyl inositol biosynthesis ribosomal protein rps kiaa growth transformation factor eig semi quantitative rtpcr analysis five genes confirmed expression genes oral pre malignant lesions opls oral squamous cell carcinomas osccs consumers underscoring biological relevance associated oral tumorigenesis depth studies warranted determine functional significance alcam cdipt oral carcinogenesis elsevier ireland ltd rights reserved
monitoring cellular responses changes growth conditions perturbation targeted pathways integral investigation biological processes however manipulating cells environment live cell imaging experiments still represents major challenge coupling microfluidics microscopy emerged powerful solution problem approach remains severely underexploited indeed microdevices rely polymer polydimethylsiloxane pdms strongly absorbs variety molecules commonly used cell biology effect microsystems cellular environment hampers capacity accurately modulate composition medium concentration specific compounds within microchips implications reliability experiments overcome critical issue developed new pdms free microdevices dedicated live cell imaging show interference small molecules also integrate module maintaining precise sample temperature ambient well rapid temperature shifts importantly changes medium composition temperature efficiently achieved within chips recording cell behaviour microscopy compatible different model systems platforms provide versatile solution dynamic regulation cellular environment live cell imaging
background almost six decades different surgical techniques developed treat patients morbid obesity various surgical techniques generally divided respect effect restrictive malabsorbtive humoral combination surgically modified human metabolism ameliorates metabolic diseases particularly diabetes even non obese patients understanding metabolic effects changed traditional paradigm bariatric surgery simple weight loss procedure metabolic surgery affecting whole body metabolism proper surgical technique individual patient important factor influencing long term results comorbidities quality life recommendations patient selection surgical methods pre postoperative patient management respected metabolic surgery principles current concepts presented
existence local renin angiotensin system ras specific hematopoietic bone marrow microenvironment proposed two decades ago ras molecules including ace ace agt agtr agtr akrc akrd anpep atpap cma cpa ctsa ctsd ctsg cypa cypb cypb cypa cypa dpp egfr enpep gper hsdb hsdb igfr klk lnpep mas mme nrc nrc prep ren rnpep thop locally present microenvironment local ras peptides control hematopoietic niche myelopoiesis erythropoiesis thrombopoiesis development cellular lineages local ras important hematopoietic stem cell biology microenvironment angiotensin regulates proliferation differentiation engraftment hematopoietic stem cells activation mas receptor ace promotes proliferation cells contains progenitor expresses renin throughout development angiotensin attenuates migration proliferation cells promotes adhesion mncs cells renin cells hematopoietic organs precursor cells renin cell requires rbp differentiate mutant renin expressing hematopoietic precursors cause leukemia deletion rbp renin expressing progenitors enriches precursor cell gene programme mutant cells undergo neoplastic transformation mice develop highly penetrant cell leukemia multi organ infiltration early death many biological conditions development function blood cells mediated ras apoptosis cellular proliferation intracellular signaling mobilization angiogenesis fibrosis aim paper review recent developments regarding actions local ras genesis leukemia malignancies molecules
two fluoro glutamine diastereoisomers fgln fgln previously developed positron emission tomography label uptake two tumor cell types greater fgln fgln present work investigated enzymology two diastereoisomers fgln two diastereoisomers fluoroglutamate fglu potential metabolites fgln diastereoisorners another fluoro derivative glutamine fluoropropyl glutamine gln two fglu diastereoisomers found moderate good substrates relative glutamate glutamate dehydrogenase aspartate aminotransferase alanine aminotransferase additionally alanine aminotransferase shown catalyze unusual gamma elimination reaction fglu diastereoisomers fglu diastereoisomers shown poor substrates strong inhibitors glutamine synthetase fgln diastereoisomers shown poor substrates compared glutamine glutamine transaminase alpha arninoadipate aminotransferase however fgln found poor substrate glutamine transaminase whereas fgln shown excellent substrate contrast gln found poor substrate enzymes examined evidently substitution position glutamine glutamate moderate profound effects enzyme catalyzed reactions present results show fgin fglu diastereoisomers may useful studying active site topology glutamate glutamine utilizing enzymes provide framework understanding possible metabolic transformations tumors labeled fgln fgln fglu fglu show gln likely much less metabolically active vivo fgln diastereoisomers elsevier rights reserved
background crucial step evaluation newly produced transgenic plants selection homozygous plants describe efficient highly flexible real time pcr based method development homozygous lines plant models complex multiple genomes relatively long generation times months using direct copy number determinations results existing dna extraction method converted high throughput plant leaf dna extraction procedure yielding dna suitable real time pcr analyses highly specific efficient primer pairs developed bread wheat reference gene epsilon cyclase standard sequence elements gene cassette routinely used cereal transformations intron bridge nopaline synthase terminator real time pcr assay reliably distinguished wheat plants single copy transgene individuals multiple copies lacking transgene obtain homozygous lines carrying unique insertion event efficiently possible plants plants raised transformed callus single copy transgene selected progeny screened homozygous plants finally assay adapted work rice conclusions ability quickly easily accurately quantify construct copy numbers provided real time pcr assay greatly improved efficiency reliability selection homozygous transgenic plants case study able select homozygous plants early generations avoiding time consuming methods large scale analysis segregation patterns descendants southern blotting additionally ability specifically develop homozygous lines carrying unique insertion event could important avoiding gene silencing due suppression needed assist selection lines suitable future deregulation primer pairs used quantify many different wheat transgenic events construct specific primer pairs targeted standard sequence elements cereal gene cassettes making method widely applicable wheat research moreover procedures described standardized method may easily adapted vectors lacking target regions used plant models
although oct sox complex crucial maintaining pluripotency stem cells molecular basis underlying regulation lineage specific differentiation remains unknown revealed highly conserved oct lys important maintaining stability oct protein intermolecular salt bridge oct lys sox asp contributes oct sox interaction post translational modifications lys somatic mutation detected bladder cancer patients impaired lys asp salt bridge oct sox interaction produced recombinant protein overexpressed pluripotent stem cells oct reduced binding sox significantly regulated stemness genes cooperatively controlled oct sox complex specifically regulated mesendodermal genes snail family genes promote epithelial mesenchymal transition thus conclude oct lys modulated oct sox interaction coordinately controls epithelial mesenchymal transition mesendoderm specification induced specific differentiation signals
dexmedetomidine highly selective adrenoceptor agonist sedation anesthetic sparing analgesia sympatholytic neuroprotective properties study evaluated neuroprotective effects dexmedetomidine dopamine neurons correlated histone acetylation via extracellular signal regulated protein kinase erk pathway animals randomly assigned four groups treatments given onetime doses dimethyl sulfoxide dmso dexmedetomidine acetylation histone protein levels erk protein levels rats dopamine neuron striatum determined western blotting various doses dexmedetomidine treatments messenger rna expression related signal transduction coupled hydroxytryptamine receptor htr striatum assessed quantitative real time polymerase chain reaction qrt pcr analysis dexmedetomidine administration increased expression erk phosphorylation histones acetylation inhibitor perk almost completely blocked dexmedetomidine induced histones acetylation addition bioinformatics analysis combination qrt pcr demonstrated dexmedetomidine could regulate genes related signal transduction coupled htr via adrenoceptor results define dexmedetomidine modulator histones acetylation via erk signaling pathway dopamine neuron striatum may provide clues mechanism underlying neuroprotective effects dexmedetomidine
well known lymphocytes play critical role development several cardiovascular diseases example studies group shown hypertension associated excessive accumulation cells vessels kidney development experimental hypertension tissues cells produce several cytokines affect vascular renal function leading vasoconstriction sodium water retention fully understand cells cause cardiovascular renal diseases important able identify quantify specific cell subsets present tissues cell subsets defined combination surface markers cytokines secrete transcription factors express complexity cell population makes flow cytometry intracellular staining invaluable technique dissect phenotypes lymphocytes present tissues provide detailed protocol identify surface intracellular markers cytokines transcription factors cells isolated murine kidney aorta aortic draining lymph nodes model angiotensin induced hypertension following steps described detail isolation tissues generation single cell suspensions vivo stimulation fixation permeabilization staining addition several fundamental principles flow cytometric analyses including choosing proper controls appropriate gating strategies discussed
cetuximab specific anti epidermal growth factor receptor egfr monoclonal antibody used cancer treatment although development resistance cetuximab well recognized underlying mechanisms remain unclear present study characterized cetuximab resistant oral squamous cell carcinoma oscc cell lines human oscc cell lines hsc hsc sas used present study effects inhibitors including cetuximab growth cells assessed mtt assays southern blotting immunofluorescence analysis performed examine protein expression localization sphere formation used characterize stem cell like properties floating aggregation culture used anchorage independent growth cetuximab inhibited proliferation hsc hsc cells sas cells proliferation three cell lines inhibited egfr erbb erbb inhibitor egfr inhibitor strongly inhibited hsc hsc proliferation sas cells moderately egfr proteins localized cell surface phosphorylated three cell lines sas cells could proliferate serum free monolayer culture formed spheres single cells floating culture hsc hsc could proliferate serum free culture conditions could form spheres growth sas spheres required serum inhibited cetuximab thus cetuximab resistant sas cells engaged egfr independent growth also exhibited stem cell like properties however growth egfr dependent aggregation culture sas cell aggregates became cetuximab sensitive suggests cetuximab sensitivity cell type dependent also affected growth microenvironment
anaphylaxis increasingly prevalent life threatening allergic condition requires people anaphylaxis caregivers trained avoidance allergen triggers administration adrenaline autoinjectors prompt correct administration autoinjectors event anaphylactic reaction significant challenge management anaphylaxis unfortunately many people know use autoinjectors either fail use fail use correctly due part deficiencies training also lack system encouraging continuous practice feedback assistive smartphone healthcare technologies demonstrated potential support management chronic conditions diabetes cardiovascular disease deficiencies evaluation lack application anaphylaxis paper describes allergisense smartphone app sensing system anaphylaxis management presents results randomized controlled prepost evaluation allergisense injection training feedback tools healthy participants participants whose training supplemented allergisense injection feedback achieved significantly better practiced injections performing correct injections compared paper control group addition results provide insights possible self efficacy failings traditional training benefits embedding self efficacy theory technology design process
liu liu chiang song jin wang insulin detemir enhances proglucagon gene expression intestinal cells via stimulating beta catenin creb activities physiol endocrinol metab first published july doi ajpendo insulin therapy using insulin detemir ins demonstrated weight sparing effects compared insulin formulations mechanisms underlying effects however remain largely unknown postulate intestinal tissues selective preference allows ins exert enhanced action proglucagon gcg expression production glucagon like peptide glp incretin hormone possessing glycemia lowering weight loss effects test hypothesis used obese type diabetic mice conducted day intervention daily injection therapeutic dose ins human insulin ins mice body weight mice day daily injection ins decreased significantly compared injected dose ins saline weight sparing effect ins associated significantly elevated circulating levels total glp reduced food intake histochemistry analysis demonstrated ins induced rapid phosphorylation protein kinase akt gut cells normal mice western blotting showed ins stimulated akt activation rapid enhanced fashion mouse distal ileum compared ins vitro investigation primary fetal rat intestinal cell fric cultures showed ins increased gcg mrna expression determined northern blotting real time pcr consistent vivo investigations ins significantly increased glp secretion fric cultures consistently ins also shown induce rapid phosphorylation akt clonal gut cell line glutag furthermore ins increased beta catenin phosphorylation nuclear translocation enhanced camp response element binding protein creb phosphorylation phosphatidylinositol kinase mitogen activated protein kinase kinase extracellular signal regulated kinase sensitive manner suggest weight sparing benefit ins mice related intestinal tissues preference leads profound stimulation gcg expression enhanced glp secretion intestinal cells potentially involving activation insulin beta catenin creb signaling pathways
background aim pulmonary monocyte infiltration plays significant role development angiogenesis experimental hepatopulmonary syndrome hps common bile duct ligation cbdl hepatic monocytes also increased cbdl origins remain unclear splenic reservoir monocytes identified major source monocytes accumulate injured tissues whether splenic monocytes contribute monocyte alterations cbdl unknown study evaluates monocyte distributions assesses effects splenectomy monocyte levels pulmonary vascular hepatic abnormalities experimental hps methods splenectomy performed cbdl animals monocyte levels different tissues circulation assessed pulmonary alterations hps evaluated vascular endothelial growth factor vegf levels angiogenesis alveolar arterial oxygen gradient aapo liver abnormalities evaluated fibrosis sirius red bile duct proliferation enzymatic changes results monocyte levels increased lung liver cbdl accompanied elevated circulating monocyte numbers splenectomy significantly decreased monocyte accumulation vegf levels angiogenesis cbdl animal lung improved aapo levels contrast hepatic monocyte levels fibrosis functional abnormalities exacerbated spleen removal conclusions splenic reservoir monocytes major source lung monocyte accumulation cbdl spleen removal attenuates development experimental hps liver monocytes may different origins accumulation exacerbated depletion splenic reservoir monocytes tissue specific monocyte alterations influenced spleen reservoir significant impact pulmonary complications liver disease
recurrent spontaneous abortion rsa unknown aetiology common disease troubled women world recent studies circular rnas circrnas gynecology obstetrics area sprung purpose study investigate expression circrnas chorionic villi patients rsa versus corresponding healthy gravidas infer potential role circrnas rsa occurrence selected pairs rsa patients healthy control subjects analyzed aberrant circrna expression three pairs villi samples group using circrna microarray altogether including regulated regulated circrnas aberrant expressed circrnas found considering raw content circrnas fold change differences restriction divergent primers four regulated circrnas hsa circrna four regulated hsa circrna selected validation genes using real time quantitative reverse transcription polymerase chain reaction qrt pcr paired test receiver operating characteristic roc curves also established result content verification accordant exactly microarray chip outcome validation circrnas area roc curves aucs eight circrnas greater function analysis circrnas rsa patients performed paper comparison taken together aberrant villi circrna expression rsa played vital role nosogenesis possibly via mirna sponge function circrnas deeper analysis detailed mechanisms worthwhile elsevier masson sas rights reserved
biological membranes exhibit function related shapes leading plethora complex beautiful cell cell organellar morphologies structures evolved particular physiological reason shapes structures formed physical forces operate membranes create particular shaped cells cell organelles membranes must undergo deformations determined structure elasticity membrane process probable driven proteins lipids interplay zimmerberg kozlov therefore important question current cell biology conjunction physics mathematics elucidate functional cause different membrane morphologies well formed one peculiar membrane shapes observed mitochondria organelles surrounded two membranes especially convoluted inner membrane displays complex ultra structure molecular understanding membrane shaped missing large extent unlike membrane remodeling classical curvature dependent processes like clathrin mediated endocytosis mitochondria likely shaped integral membrane proteins following review current knowledge inner mitochondrial membrane architecture discuss recent findings advances understanding factors shape membrane address pending questions especially regard experimentally challenging nature investigating membrane bending hydrophobic integral membrane proteins elsevier inc rights reserved
rheumatic heart disease represents leading cause mortality caused group streptococcus gas infections transmitted respiratory route although gas infections treated antibiotics often inadequate efficacious gas vaccine holds promise intranasal vaccination especially attractive mimics natural route infections able induce mucosal iga systemic igg immunity nanoparticles prepared either encapsulating coating lipopeptide based vaccine candidate lcp surface poly lactic glycolic acid plga vitro study showed encapsulation lcp vaccine nanoparticles improved uptake maturations antigen presenting cells immunogenicity lipopeptide incorporated plga based nanoparticles compared peptides administered mucosal adjuvant cholera toxin mice upon intranasal administration higher levels specific salivary mucosal iga systemic antibody igg titres observed groups immunized encapsulated lcp compared lcp coated nanoparticles free lcp systemic antibodies obtained lcp encapsulated plga nps inhibited growth bacteria six different gas strains results show plga based lipopeptide delivery promising approach rational design simple effective patient friendly intranasal gas vaccine resulting mucosal iga response elsevier rights reserved
objectives hypothesiscurrent interventions management vocal fold dysfunction focus conservative surgical approaches however complex structure precise biomechanical properties human mean strategies limitations clinical practice cases offer inadequate levels success regenerative medicine exciting development field potential enhance recovery beyond conventional treatments aim review discuss advances field regenerative medicine advances process replacing engineering regenerating utilization stem cells intention restoring normal structure function data sourcesenglish literature review methodswe conducted systematic review medline cases studies tissue engineering utilizing stem cells resultsthe three main approaches regenerative medicine currently applied regeneration include cell therapy scaffold development utilization growth factors conclusionexciting advances made stem cell biology recent years including use induced pluripotent stem cells expect advances translated field forthcoming years laryngoscope
recent years advances light based technology driven ongoing optical revolution neuroscience synergistic technologies laser microscopy molecular biology organic synthetic chemistry genetic engineering materials science allowed light overcome limitations replace many conventional tools used physiologists record manipulate single cells whole cellular networks review different optical techniques stimulating neurons influencing neuronal growth manipulating neuronal structures neurosurgery
radiofrequency ablation rfa effectively treats esophageal high grade dysplasia efficacy treating anal canal high grade squamous intraepithelial lesions hsils unsubstantiated prospective study assessed safety efficacy applying hemi circumferential rfa anal canal hsil twenty one hiv negative participants hsil occupying aehalf anal canal circumference treated hemi circumferential anal canal rfa participants assessed every months months high resolution anoscopy recurrence treatment zone treated focal rfa twenty one participants mean lesions range enrolled completed trial six participants recurrent hsil within treated hemi circumference within year four participants persistence index lesion months one index hsil persisted months participants two rfa treatments curve predicted hsil free survival within treatment zone year comparing first last participants predicted year hsil free survivals respectively suggesting learning curve treating physician multivariable analysis showed decreased recurrence last participants increasing bmi increased recurrence participants device procedure related serious adverse events anal stricture heavy bleeding hemi circumferential rfa yielded high rate anal hsil eradication hiv negative patients year minimal adverse events lesion persistence probably related incomplete initial ablation
plants stably transformed manipulate expression genes mediating ecological performance profoundly altered research plant ecology agrobacterium mediated transformation remains effective method creating plants harbouring limited number transgene integrations low complexity ecological physiological research following requirements must met regenerated plants ploidy level corresponding wildtype plant contain single transgene copy homozygous state iii dna must completely inserted without vector backbone sequence elements functional integration change phenotype plant interrupting chromosomal genes mutations occurring regeneration procedure screening process obtain transformed plants meet criteria costly time consuming optimized screening procedure presented developed flow chart optimizes screening process efficiently select transformed plants ecological research consists segregational analyses select transgenic generation plants single dna copies homozygous indispensable molecular genetic tests flow cytometry diagnostic pcrs southern blotting performed earliest effective times screening process qpcr quantify changes transcript accumulation confirm gene silencing overexpression last step selection process routinely transform wild tobacco nicotiana attenuata constructs silence ectopically overexpress ecologically relevant genes proposed protocol supported examples system
humans chimeric transcripts originating genes identified mechanisms association chimeric transcripts arising chromosomal rearrangements cancer well established much remains unknown regarding biogenesis importance chimeric transcripts arise nongenomic alterations recently slca elk chimera shown androgen regulated overexpressed metastatic high grade prostate tumors relative local prostate cancers characterize expression klk cis sense antisense chimeric transcript show examples prostate cancer using non protein coding microarray analyses initially identified androgen regulated antisense transcript within untranslated region klk gene lncap cells klk cis nat validated strand specific linker mediated pcr northern blotting characterization klk cis nat rapid amplification cdna ends race revealed transcript forms multiple fusions klk sense transcript lack klk antisense promoter activity using reporter assays suggests transcripts unlikely arise trans splicing mechanism race analyses deep sequencing data lncap cells treated androgens revealed six high confidence sense antisense chimeras three supported cdna databases study shown complex gene expression klk locus might hallmark cis sense antisense chimeric transcription
nomenclature major platelet receptors may appear complex fact logical reasons developed way short review describe origins nomenclature developed information became available relationships established receptors types cells difficulties also arisen alternative nomenclature systems various equivalences described listed remain areas immunology transfusion accepted nomenclature leaves something desired unlikely major changes occur
chemical fertilizers especially nitrogen phosphorus used grasslands maximize plant biomass production livestock despite substantial body work fertilization affects aboveground plant belowground microbial communities short term response soil ammonia oxidizing microbial communities play central role nitrification fertilization well understood responses ammonia oxidizing microbial communities short term years additions investigated alpine grassland qinghai tibetan plateau quantitative polymerase chain reaction qpcr analysis amoa genes showed ammonia oxidizing archaea aoa dominated ammonia oxidizing bacteria aob non amended soil short term urea addition significantly increased abundance aob whereas aoa abundance remained unchanged resulting shift aoa aob dominance suggests aob likely important first step nitrification following urea amendment pyrosequencing demonstrated significant shift aob aoa community composition within short term fertilizer plots indicating aob community composition sensitive aoa response urea amendment study demonstrated abundance composition aoa aob communities responded differently years urea addition suggesting fertilizer may important controller ammonia oxidizing microbial communities managed alpine grasslands qinghai tibet plateau
tumor microenvironment tme liver plays important role primary metastatic liver tumor formation tumor growth promotion cellular non cellular components tme significantly influence tumor development growth metastatic spread anti tumor immunity response tumor therapy cellular components tme liver consist infiltrating immune cells also liver resident cells liver sinusoidal endothelial cells lsec hepatic stellate cells hsc promote tumor growth negatively regulating tumor associated immune responses review characterize cells tme pro anti tumor function primary metastatic liver tumors furthermore summarize mechanisms permit growth hepatic tumors despite occurrence spontaneous anti tumor immune responses novel therapeutic approaches targeting tme could unleash tumor specific immune responses improve survival liver cancer patients published elsevier inc
lipids diverse class metabolites play several key roles maintenance human health lipidomics focuses global study molecular lipids cells tissues biofluids advancing rapidly past decade recent developments computational methods enable lipid analysis high throughput resolution sensitivity ability structural identification several hundreds lipids nutrition research lipidomics effectively used elucidate interactions diet nutrients human metabolism lipidomics also applied optimize effects food processing dietary value evaluation food related health effects
conditional dimorphisms widespread color morphology behavior life history traits successfully modeled game theory conditional strategies quantitative genetics threshold traits conditional trimorphisms recently unveiled combine rock paper scissors rps model game theory environmental threshold model quantitative genetics model trimorphisms environmentally induced result expression two thresholds investigated tactic fitness structure maintenance alternative reproductive tactics scarab dung beetles constitute first known examples conditional male trimorphism parameterized novel ternary fitness landscape explains conditional male trimorphism beetles maintained tracked changes tactic frequencies wild population phanaeus triangularis detected fitness intransitivity consistent rps dynamics quantitative predictions model compare favorably corresponding observed parameters ternary landscape reveals geographic populations beetles evolve conditional trimorphism dimorphism ternary model also suggests polyphenic systems could potentially evolve conditional purely genetic mediation
aims understanding metabolism lactose galactose regulation lactobacillus rhamnosus methods results gene cluster containing nine open reading frames orfs involved metabolism lactose galactose lact rhamnosus tcell sequenced characterized order orfs lactegf galketrm northern blotting experiments revealed gene cluster could transcribed one lactegf galketrm mrna though three major transcripts lactegf galketrm galetrm detected gene cluster transcription lac gal operon independently induced presence lactose galactose northern blotting primer extension experiments found presence four putative promoters upstream orfs lact lactp galk galkp galkp gale galep measurements enzymatic activities galk gale galt suggested expression gal operon subjected galactose activation glucose repression mechanism conclusions lact rhamnosus tcell galactose moiety lactose could metabolized two alternative pathways leloir tagatose phosphate pathways whereas galactose metabolism could mediated leloir pathway significance impact study work provides important information sugar metabolism lact rhamnosus
many human syndromes involve loss imprinting loi due loss lom gain dna methylation gom loi occur mosaics therefore difficult detect conventional methods human imprinted region crucial control fetal growth loi locus associated two clinical disorders opposite phenotypes beckwith wiedemann syndrome bws characterized fetal overgrowth high risk tumors russell silver syndrome rss characterized intrauterine postnatal growth restriction recently using southern blotting diagnosis rss bws describe powerful quantitative technique allele specific methylated multiplex real time quantitative pcr asmm rtq pcr diagnosis two complex disorders first checked specificity probes primers used asmm rtq pcr carried statistical validation method retrospective prospective populations patients analysis demonstrated asmm rtq pcr sensitive southern blotting detecting low degree loi moreover asmm rtq pcr rapid reliable simple safe cost effective method hum mutat wiley liss inc
objective case control study explored correlations pla gene polymorphisms susceptibility severity acute pancreatitis chinese population materials methods october october patients chosen case group according acute physiology chronic health evaluation apache score standard patients divided mild map group severe sap group sap patients divided sap multiple organ dysfunction syndrome mods group sap without mods group meanwhile healthy subjects received physical examinations study hospitals selected control group serum lipoprotein associated phospholipase pla levels detected enzyme linked immunosorbent assay elisa polymorphisms pla gene detected polymerase chain reaction restriction fragment length polymorphism pcr rflp results significant differences frequencies pla gene polymorphisms group control group distribution genotype genotype group higher control group whereas sap group sap mods group distributions higher map group sap without mods group haploids formed may associated susceptibility pla gene polymorphisms could affect serum pla level whereas allele gene allele gene serum pla level serum amylase may independent risk factors conclusion results demonstrated pla gene polymorphisms may associated susceptibility severity
mild therapeutic hypothermia candidate treatment traumatic brain injury tbi however role mild hypothermia neuronal sprouting tbi remains obscure used fluid percussion injury fpi model assess effect mild hypothermia pericontusion neuronal sprouting tbi rats male sprague dawley rats underwent fpi sham surgery followed mild hypothermia treatment degrees normothermia treatment degrees rats euthanized days fpi neuronal sprouting confirmed increase growth associated protein gap expression evaluated using immunofluorescence western blot assays expression levels several intrinsic extrinsic sprouting associated genes neurite outgrowth inhibitor nogoa phosphatase tensin homolog pten suppressor cytokine signaling socs analyzed quantitative real time polymerase chain reaction pcr results revealed mild hypothermia significantly increased expression level gap dramatically suppressed expression level interleukin socs days fpi ipsilateral cortex compared normothermia tbi group data suggest post traumatic mild hypothermia promotes pericontusion neuronal sprouting tbi moreover mechanism hypothermia induced neuronal sprouting might partially associated decreased levels socs
european project minotaurus aims deliver innovative bio processes eliminate emerging classic organic pollutants bio processes based concept immobilization biocatalysts microorganisms enzymes encompass bioaugmentation enzyme technology rhizoremediation halophytes bioelectrochemical remediation process immobilization based technologies applied engineered situ natural systems situ bioremediation groundwater wastewater soil selection application modern physico chemical biological ecotoxicological monitoring tools combined rational understanding engineering enzymology microbial physiology pertinent approach open black box selected technologies reliable process monitoring constitutes basis developing refining biodegradation kinetics models turn improve predictability performances achieved technologies key strength minotaurus possibility direct implementation technologies five european reference sites confronted pollutants two technologies tested site starting first year deliver set tools techniques processes enhance ability communities respond challenges organic pollutants also frameworks structuring making evidence based decisions sustainable appropriate bioremediation measures minotaurus consortium includes fifteen partners eight european countries eight research education institutions five smes covering whole chain bioremediation approaches production monitoring biocatalysts bioremediation engineering one large end user operating wastewater treatment plants one environmental agency work together support advisory board mainly consisting environmental decision makers
background aim study produce recombinant version highly antigenic helicobacter pylori tonb iron dependent siderophore transporter protein transgenic plants candidate oral vaccine antigen materials methods using agrobacterium mediated gene transfer introduced three different constructs tonb gene genome model plant arabidopsis thaliana investigated transgene insertion pcr produced tonb antibodies analysis production recombinant protein plants verified identity protein produced mass spectrometry analysis analyzed number genetic inserts plants southern blotting results three different constructs expression cassette full length tonb tonb truncated end removing codons transmembrane helix latter construct codons endoplasmic reticulum sekdel retention signal added end used find effective way express tonb antigen production tonb protein detected plants transformed constructs confirmed western blotting mass spectrometry analysis considerable differences protein expression three different constructs observed protein concentration plants least total soluble proteins conclusions helicobacter pylori tonb protein produced arabidopsis thaliana plants form recognizable rabbit anti tonb antiserum tonb expressing plants highly suitable animal studies oral adminstration route immunization helicobacter infections
estimating nature extent human cancer risks due arsenic drinking water currently great concern since millions persons worldwide exposed arsenic primarily natural enrichment drinking water drawn deep wells humans metabolize eliminate oxidative methylation subsequent urinary excretion debate role methylation activation detoxification variations arsenic metabolism may affect individual risks toxicity carcinogenesis using data three populations mexico china chile analyzed distribution urine total arsenic arsenic species inorganic arsenic inas monomethyl arsenic mma dimethyl arsenic dma data analyzed terms concentration species evaluating mma dma mma dma inas ratios persons urinary present dma male female differences discernible high low exposure groups three populations gender differences varied populations data also indicated bimodal distributions ratios dma inas mma gene genes responsible arsenic methylation still unknown results studies among ethnic groups study consistent presence functional genetic polymorphisms arsenic methylation leading measurable differences toxicity analysis highlights need continuing research health effects humans using molecular epidemiologic methods elsevier science usa rights reserved
poisson distribution played key role experiments historic role development molecular biology particular interpretation design experiments elucidating actions bacteriophages host bacteria infection process based parameters poisson distribution briefly review three important experiments offer suggestions use poisson distribution statistical calculations biology laboratory exercises reflecting use poisson distribution current biological investigations
aims nut midline carcinoma nmc rare undifferentiated aggressive carcinoma locates characteristically midline head neck mediastinum nmc characterized chromosomal rearrangements gene nut brd gene common translocation partner forming fusion oncogene brd nut end international nut midline carcinoma registry patients treated nmc laryngeal nmc exceedingly rare report case series seven cases methods results searched cases files different hospitals well thorough search english language literature diagnosis nmc made demonstration nut rearrangement either immunohistochemistry fluorescence situ hybridization fish reverse transcription polymerase chain reaction pcr found three previously published cases series add four cases conclusions nmc consists monomorphic often discohesive cells epithelioid appearance distinct nucleoli tumours typically show abrupt squamous differentiation mean age patients years hence significantly lower conventional laryngeal carcinoma tumours located supraglottis five patients died disease months laryngeal nmc may underdiagnosed increased awareness among pathologists warranted nmc characteristic morphological features positive immunostaining nut antibody diagnostic aggressive behaviour demands intense treatment strategy need recognition emphasized new promising treatment strategies
background deficiencies lysosomal mannosidase lam activity animals caused either mutations consuming toxic alkaloids lead severe phenotypic behavioural consequences yet epialleles adversely affecting lam expression exist honey bee population suggesting might beneficial certain contexts eliminated natural selection methods used combination enzymology molecular biology metabolomics characterise catalytic properties honey bee lam amlam used indolizidine alkaloid swainsonine inhibit activity vitro vtvo results show amlam inhibited vitro swainsonine albeit slightly higher concentrations animals dietary exposure growing larvae swainsonine leads pronounced metabolic changes affecting saccharides also amino acids polyols polyamines interestingly abundance two fatty acids implicated epigenetic regulation significantly reduced treated individuals additionally swainsonie causes loco like symptoms increased mortality subtle decrease rate larval growth resulting subsequent developmental delay pupal metamorphosis discussion consider findings context cellular lam function larval development environmental toxicity colony level impacts observed developmental heterochrony swainsonine treated larvae lower lam activity offer plausible explanation existence epialleles impaired lam expression individuals carrying epialleles provide additional level epigenetic diversity could beneficial functioning colony whereby flexibility timing adult emergence might useful task allocation
objectives investigate expression dna methylation status regulatory mechanism tissue factor pathway inhibitor tfpi human placenta tissues preeclampsia material methods studied mrna protein expression promoter methylation levels tfpi placentas compared normal pregnant women quantitative real time polymerase chain reaction immunohistochemistry western blot sequenom mass array used placenta tissue detection results expressions tfpi mrna protein significantly elevated placentas compared ones hypomethylation tfpi promoter detected patients women significant decrease placentas methylation level significantly decreased cpg cpg cpg patients normal placentas conclusion expression tfpi aberrant promoter mythylation status presented placentas suggesting epigenetic mechanism might contribute pathogenesis elsevier ltd rights reserved
background aims induction donor specific immune tolerance good alternative chronic life long immunosuppression transplant patients donor major histocompatibility complex mhc molecules represent main targets allogeneic immune response transplant recipients liver targeted gene transfer viral vectors induces tolerance toward encoded antigen aim work determine whether alloantigen gene transfer hepatocytes induces tolerance promotes graft acceptance methods cbl mice treated adeno associated viral aav vector targeting expression mhc class molecule hepatocytes transplantation fully allogeneic pancreatic islet balb mice results aav treated mice tolerant alloantigen demonstrated long term expression hepatocytes even highly immunogenic challenge adenoviral vector chemical induction diabetes aav treated mice significantly delayed rejection fully allogeneic pancreatic islet grafts recipients tolerant days aav mediated expression liver induced local expansion lymphocytes allospecific suppressive properties adoptive transfer liver generated tregs naive diabetic mice promoted long term survival allogeneic pancreatic islet grafts conclusion aav mediated long term expression single mhc class molecule liver induces generation subset allo specific treg cells promote tolerance toward fully allogeneic graft liver gene transfer represents promising strategy vivo induction donor specific tolerance lay summary liver special immune system biased toward tolerance study investigated possibility harnessing property liver induce tolerance allogeneic transplantation demonstrate first time vivo gene transfer allogeneic antigen adeno associated viral vector mouse hepatocytes induces expansion population regulatory lymphocytes tregs instrumental preventing rejection allogeneic pancreatic islets transplanted animals allogeneic transplantation main treatment end stage diseases number organs life long immunosuppressive treatments still required limit graft rejection treatments exhibit serious side effects present findings open new avenue promoting allo specific tolerance via vivo induction treg expansion european association study liver published elsevier rights reserved
despite recent advances improving titers therapeutic proteins antibodies scale high yields achieved select mammalian hosts regardless host product strong promoters required obtain high levels transgene expression however promoters employed drive expression rather limited variety usually either viral derived screened empirically vector design begin move away viral parts employed systematic approach identify design new synthetic promoters using endogenous elements established workflow design elements analyzing transcriptomics profile specific cell line desired representative cell culture condition identifying key genetic motifs using bioinformatics used rationally construct synthetic promoters building synthetic promoters using conventional dna synthesis molecular biology techniques evaluating performance synthetic promoters using model proteins resulting promoters perform comparably hcmv promoter variants tested endogenous components design build test cycle also investigated underlying design rules transcription factor binding site arrangement synthetic promoters overall approach using omics guided workflow designing synthetic promoters facilitates construction high expression vectors immediate use current production hosts
dna analysis processed foods performed widely detect various targets genetically modified organisms gmos food processing often causes dna fragmentation consequently affects results pcr analysis order assess effects dna fragmentation reliability pcr analysis investigated novel methodology quantify degree dna fragmentation designed four real time pcr assays amplified ribosomal rna gene sequences common various plants lengths approximately base pairs created indicator value dna fragmentation index dfi calculated values derived real time pcr assays finally demonstrated efficacy method quality control gmo detection processed foods evaluating relationship dfi limit detection elsevier ltd rights reserved
previously reported secretion type natriuretic peptide cnp vascular endothelial cells proposed existence vascular natriuretic peptide system composed endothelial cnp smooth muscle guanylyl cyclase cnp receptor involved regulation vascular tone remodeling regeneration study assessed functional significance system regulation blood pressure vivo using vascular endothelial cell specific cnp knockout vascular smooth muscle cell specific knockout mice mice showed neither skeletal abnormality early mortality observed systemic cnp knockout mice endothelial cell specific cnp knockout mice exhibited significantly increased blood pressures enhanced acute hypertensive response nitric oxide synthetase inhibition acetylcholine induced endothelium dependent vasorelaxation impaired rings mesenteric artery isolated endothelial cell specific cnp knockout mice addition endothelin gene expression enhanced pulmonary vascular endothelial cells endothelial cell specific cnp knockout mice also showed significantly higher plasma endothelin concentrations greater reduction blood pressure response endothelin receptor antagonist control littermates contrast vascular smooth muscle cell specific knockout mice exhibited blood pressures similar control mice acetylcholine induced vasorelaxation preserved isolated mesenteric arteries nonetheless cnp induced acute vasorelaxation nearly completely abolished mesenteric arteries vascular smooth muscle cell specific knockout mice results demonstrate endothelium derived cnp contributes chronic regulation vascular tone systemic blood pressure maintaining endothelial function independently vascular smooth muscle online data supplement
inorganic arsenic methylated methylarsonic acid mma dimethylarsinic acid dma alternating reduction asv asiii addition methyl group adenosylmethionine methylated metabolites less reactive tissue constituents readily excreted urine inorganic arsenic therefore low percentage mma dma urine correlates low rate excretion absorbed arsenic although studies indicate average inorganic arsenic mma dma urine seems polymorphism arsenic methylation studies arsenic exposed native andean people north west argentina show percent mma urine populations rare event occurring individuals however several mammalian species common feature hand one study indicates higher usual mma urine arsenic exposed people taiwan also marked intra individual variation urinary pattern arsenic metabolites experimental studies shown methylation arsenic influenced form arsenic absorbed dose level route exposure nutritional status studies argentina indicate arsenic methylation influenced age dose level probably hormonal status example children lower dma urine compared adults increasing dma increasing exposure level
problem neurobiology adorned recent discoveries molecular biology genetics cognitive sciences present everywhere report man body intellectual faculties perception others social conducts morality affects would governed neuronal substrata things simple methodology try answer question author going use opposition explain understand long standing often passionate debate concerns epistemology ontology two modalities inflexible different thus methods mind dilthey explain nature submitted principle causality understand psychic life sends back sphere sense results debate explain understand far simple author adduces draw conclusions questioning speech promising reductionist neurobiology believe explain everything including actions name neurobiological reason case would slaves history already fate neurobiological shaped man neurobiological speech based mechanism tautology goes round circles teaches absolutely nothing neurobiologist asserts opposite reporting say precise localizable perception consciousness consciousness appropriate place say differently intellectual topic appropriate consciousness takes place remain forever untranslatable condemned silence one exist thus need immediate permanent help one contradiction process purely event brain actions gestures brief allowed live take place takes place finally assert brings nothing explanation always leaves something aside phenomenon life imperceptible example alcoholic significant change intellectual mechanisms responsible alcohol addiction alcoholic wanting drink everybody makes written history beforehand much importance alcoholic began thinking cerebral dysfunction lives life would shape indeed receives message knows felling question indeed receives message knows feeling question force circumstance feel brain passes witness appears brain witnesses world lives also condition mortal without objects cultivated without world presence one existence understanding neurobiological explanation alcohol addiction concern knowledge ignore life means well gap live theorize alcoholic reduced cerebral dysfunction life relation capable taking using real life experience psychopathology implications going show big importance reduction comes truncate understanding man sick coach reality constantly deal global complete man anthropology human fate conclusion science brings news discovered domain keep always mind life remains imperceptible deeply moving without existential event allows live air become unbreathable technical scientific world would like sentenced asphyxiation elsevier masson sas rights reserved
comparisons mhc gene content diversity among closely related species provide insights evolutionary mechanisms shaping immune system variation chimpanzees bonobos gorillas humans closest living relatives contrast relatively little known structure variation gorilla mhc class genes gogo combined long range amplifications long read sequencing technology analyze full length mhc class genes gorillas obtained full length genomic sequences corresponding gogo alleles gogo oko alleles gogo alleles gogo alleles including novel coding region sequences identified two previously undetected mhc class genes related gogo gogo respectively thereby illustrating potential approach efficient highly accurate mhc genotyping consistent phylogenetic position within hominid family individual gorilla mhc haplotypes share characteristics humans chimpanzees well orangutans suggesting complex history mhc class genes humans great apes however overall mhc class diversity appears low supporting hypothesis gorillas might experienced reduction mhc repertoire
long term peritoneal dialysis leads ultrafiltration failure uff peritoneal mesothelial cells form innermost monolayer peritoneal cavity shown regulate various responses including inflammation uff present study designed investigate effect peroxisome proliferator activated receptor gamma ppar gamma agonist rosiglitazone peritoneal dialysis solution pds induced injuries rat peritoneal mesothelial cells rpmcs rpmcs cultured different durations different concentrations pds gene expression levels aquaporin aqp zonula occluden determined using reverse transcription quantitative polymerase chain reaction analysis protein levels aqp ppar gamma measured using western blot analysis interleukin detected using elisa rpmcs damaged stimulation pds expression levels aqp increased secretion decreased rosiglitazone use ppar gamma inhibitor completely prevented effects rosiglitazone results indicated pds exposure stimulated inflammatory response rpmcs ppar gamma activator rosiglitazone appeared relieve injury inhibiting inflammation regulating expression aqp however investigations required elucidate potential underlying mechanism
calprotectin antimicrobial complex composed protein family subunits contributing innate immunity calprotectin expression increased interleukin alpha alpha modulates keratinocyte differentiation keratinocyte growth factor kgf produced mesenchymal cells mitogenic activity epithelial cells study investigated effect kgf calprotectin expression keratinocytes modulation alpha human keratinocytes cultured kgf presence absence kgf receptor kgfr inhibitor mitogen activated protein kinase mapk inhibitors calprotectin expression determined northern blotting enzyme linked immunosorbent assay respectively whereas mapk phosphorylation analyzed western blot analysis kgf significantly decreased expression specific mrnas calprotectin protein presence kgf kgfr inhibitor extracellular regulated kinase inhibitor restored kgf downregulated expression kgf increased alpha expression keratinocytes whereas alpha increased kgf expression fibroblasts cocultured fibroblast keratinocytes showed lower mrna expression keratinocytes alone presence absence alpha kgf results suggest fibroblast derived kgf reduces restricts calprotectin expression keratinocytes supports hypothesis calprotectin expression keratinocytes modulated factors associated epithelial mesenchymal interactions immunology cell biology doi icb published online january
background adding long acting beta agonist laba inhaled corticosteroids ics using fixed dose combination fdc inhaler guideline recommendation children aged years uncontrolled asthma evidence benefit adding fdc inhaler separate laba inhaler limited objective objective study compare effectiveness laba added fdc inhaler separate inhaler children uncontrolled asthma methods two primary care databases used create matched cohort study year follow period included children prescribed first step ics monotherapy two cohorts formed children receiving add laba fdc inhaler separate laba inhaler matching variables confounders identified comparing characteristics baseline year follow outcomes examined subsequent year primary outcome adjusted odds ratio overall asthma control defined follows asthma related hospital admission emergency room visit prescription oral corticosteroids antibiotic evidence respiratory consultation puffs short acting bagonist daily results final study consisted children cohort mean age years male separate icsdlaba cohort odds achieving overall asthma control lower adjusted odds ratio confidence interval compared fdc cohort conclusion study demonstrates small significant benefit achieving asthma control add laba fdc compared separate inhaler supports current guideline recommendations american academy allergy asthma immunology
prolonged translation arrest correlates delayed neuronal death hippocampal neurons following global cerebral ischemia reperfusion many previous studies investigated ribosome molecular biology mrna regulatory mechanisms brain ischemia less studied investigated embryonic lethal abnormal vision isoforms hur hub huc hud well expression mrnas containing adenine rich uridine elements following global ischemia rat brain proteomics embryonic lethal abnormal vision immunoprecipitations polysomes isolated rat hippocampal controls following min ischemia plus reperfusion showed distinct sets mrna binding proteins suggesting differential mrna regulation condition notably hub huc hud undetectable nic reperfusion polysome associated mrnas contained ischemia upregulated mrnas containing adenine rich uridine elements since mrnas containing adenine rich uridine elements regulation important several cellular stress responses results suggest disadvantaged compared coping ischemic stress expected important contributing factor selective vulnerability data available via proteomexchange identifier pxd geo series accession number gse
ornate dog tick dermacentor reticulatus vector several blood parasites including babesia canis causative agent babesiosis geographical range reticulatus europe discontinuous gap separating eastern western macroregions new foci observed several locations western central europe considered expansion western population including foci western poland present paper used molecular markers identify origins foci compared genetic polymorphism reticulatus collected sites situated within eastern population overall polymorphism rdna low sites western population shared haplotype suggesting expansion area marker rdna found differences polymorphism sites eastern poland eastern population newly emerged foci western poland considered putative expansion zone western population however sites western poland differed considerably nearby german site results show foci western poland could originated reticulatus western population previously thought found state border following river hinders considerably gene flow adjacent sites suggest natural dispersal reticulatus wildlife unlikely emergence new foci rather contributed human associated dispersal propose livestock pets travelling owners probable source new foci easily transfer ticks within country countries elsevier rights reserved
purpose etv runx acute lymphoblastic leukemia common genetic subtype pediatric favorable prognosis study analyzed outcome etv runx patients treated institution aim identifying significant prognostic variables materials methods sixty three patients diagnosed etv runx prognostic variables studied included minimal residual disease mrd detected eti runx fusion presence additional cytogenetic abnormalities results year event free survival patients relapsing median months diagnosis year cumulative incidence relapse multivariate analysis revealed presence mrd detected real time quantitative polymerase chain reaction fluorescence situ hybridization etv runx fusion end remission induction presence additional structural abnormalities translocations inversions negatively affected outcome despite treatment allogeneic hematopoietic cell transplantation eight relapsed patients died disease progression overall survival conclusion etv runx may heterogeneous terms prognosis variables mrd end remission induction additional structural abnormalities could define subset patients likely poor outcome
iron essential trace metal human metabolism however imbalances iron homeostasis prevalent worldwide detrimental effects human health humans ability remove excess iron therefore iron homeostasis maintained regulating amount iron entering body diet iron present human diet number different forms including heme meat variety non heme iron compounds heme absorbed intact bioavailability non heme iron varies greatly depending dietary composition number dietary components capable interacting iron regulate solubility oxidation state interestingly emerging body evidence suggesting nutrients also direct effects expression function enterocyte iron transporters addition dietary factors body iron status major determinant iron absorption roles important dietary systemic factors regulating iron absorption discussed review
group innate lymphoid cells ilcs comprise natural killer cells ilcs reside within peripheral tissues several different ilc subsets recently characterized however unique markers identified uniquely define subsets whether ilcs cells fact distinct lineages alternately exhibit transitional molecular programs allow adapt different tissue niches remains open question cells prototypic member group ilcs historically assigned functions appears multi subset family distributed throughout body raises question whether populations mediate distinct functions infection tumor immuno surveillance review diversity group ilc subsets transcriptional regulation localization mobility receptor expression highlight challenges unraveling individual functions different populations cells
circular rnas special class endogenous rnas characterized jointing ends together via exon intron circularization recent studies found circular rnas involved development human diseases however little known roles human gastric cancer study chose hsa circ targeted circrna investigate clinical significances gastric cancer patients hsa circ expression levels five gastric cancer cell lines specimens tissues measured real time quantitative reverse transcription polymerase chain reaction potential relationship hsa circ expression levels patients clinicopathological factors investigated receiver operating characteristic curve constructed evaluating diagnostic value hsa circ hsa circ expression levels five detected gastric cancer cell lines ags bgc hgc mgc sgc significantly downregulated normal gastric epithelial ges cells besides compared healthy control tissues downregulated gastric cancer tissues also gastric precancerous lesions moreover hsa circ expression levels significantly correlated cell differentiation borrmann type tissue carcino embryonic antigen expression results suggested hsa circ may play crucial roles gastric cancerogenesis potential biomarker clinical prognosis prediction
bifenthrin chiral pesticide two enantiomers work stereoselective degradation investigated plants domesticated active sludge considering degradation pesticides plants effected external conditions hence nanometer materials gothite added soil explore effect sorption enantioselectivity degradation microbial community responsible biodegrading active sludge studied polymerase chain reaction denaturing gradient gel electrophoresis pcr dgge plant researches chiral difference discovered degradation pesticides onions resulted existence gothite soil reduced amount plants uptake environment also enlarged chiral difference process indicating absorption gothite pesticides enantioselectivity may generated adsorption site combined gothite located chiral center pesticide studies sludge effectively degraded decline isomers followed first order kinetics however obvious stereoselective degradation domesticated sludge analysis dgge revealed active sludge maintained rich microbial community whole process index increased early domestication may direct toxicity bacteria bacteria able degrade small dose pesticide absorbed nutrition sequence results demonstrated variety bacteria grew instead acidobacteria betaproteobacteria sphingobacteriia alphaproteobacteria flavobacteria also appearing sludge domestication
polyomavirus associated nephropathy pvan rare challenging cause renal dysfunction report pvan renal allograft recipient highlight obstacles definitive diagnosis disease entity deceased donor renal transplant recipient diagnosed polyomavirus nephritis years transplantation immunosuppressive agents subsequently reduced resulting initial stabilization renal function present interesting case discuss challenges diagnosing treating rare entity
background crustaceans studied extensively model systems nervous system function single neuron properties behavior however lack molecular sequence information tools slowed adoption physiological systems molecular model systems study sequenced performed novo assembly nervous system transcriptomes two decapod crustaceans jonah crab cancer borealis american lobster homarus americanus results forty two thousand seven hundred sixty six sixty thousand two hundred seventy three contigs assembled borealis americanus respectively representing unique coding sequences transcripts genes associated neural function identified manually curated produce characterization multiple gene families important nervous system function included genes distinct ion channel types biogenic amine gaba receptors major transmitter receptor subtypes including glutamate acetylcholine receptors gap junction proteins innexins conclusion resource crustacean model systems better poised incorporation modern genomic molecular biology technologies enhance interrogation fundamentals nervous system function
polyextremophilic organisms haloalkaliphiles focused attention due hydrolytic enzymes halophilic microorganisms include heterotrophic methanogenic archaea photosynthetic lithotrophic heterotrophic bacteria photosynthetic heterotrophic eukaryotes halophiles haloalkaliphiles distributed throughout hypersaline environments natural hypersaline brines arid coastal even deep sea locations well man made salterns microbes possess range biocatalysts allow sustain prevailing extreme conditions among enzymes proteases carbohydrases peroxidases cited candidates proteases widely occur microbial world play significant role processing maintenance large number membrane proteins cellular conditions besides proteases among commercially viable enzymes dominate worldwide enzyme market proteases halophilic haloalkaliphilic bacteria marine sources appear significant role detergent industries ripening salted fish fish sauces marinades modifying fish protein concentrations dehairing deskinning non aqueous enzymology asymmetric catalysis present chapter proteases halophilic haloalkaliphilic bacteria reviewed respect occurrence biochemical properties
prunus necrotic ringspot virus pnrsv common pollen borne virus infect many prunus species strains cause serious adverse effects rugose mosaic virus many strains relatively symptomless sweet cherry prunus avium however even symptomless strains cause adverse reactions cherry rootstocks gisela cerasus canescens using interfering rnas rnai induce gene silencing rootstocks pnrsv tolerant pnrsv sensitive transformed rnai vector part pnrsv containing inverted repeat region pnrsv using agrobacterium tumefaciens strain eha yielded independent transgenic events three regenerated plants exhibited normal phenotype presence pnrsv fragment confirmed southern blot northern blotting revealed presence small interfering rnas sirna five ten transgenic events tested transgenic lines inoculated combination pnrsv prune dwarf virus pdv one year transgenic showed infection symptoms negative pnrsv elisa assays non transgenic plants developed serious virus infection symptoms died even though tolerant pnrsv inoculation still caused infection making symptomless carrier contrast inoculated transgenic remained negative pnrsv elisa assays results indicate rnai mediated gene silencing effective inducing virus resistance cherry rootstocks may useful conferring virus resistance commercial scions producing non genetically modified fruits
canine brucellosis caused brucella canis neglected zoonosis worldwide leading cause reproductive failure dogs often causing substantial economic losses breeding kennels study aimed investigate occurrence canis infection dogs commercial breeding kennels located sao paulo state brazil total dogs males females commercial kennels clinically examined blood samples collected brucellosis diagnosis blood culture association clinical manifestations suggestive brucellosis positive results blood culture determined dogs tested least one clinical sign suggestive brucellosis positive blood cultures seventy two dogs positive blood culture least one clinical sign suggestive brucellosis dogs showed least one clinical manifestation suggestive brucellosis although blood culture negative kennels least one positive dog prevalence infection kennel varied abortion stillbirth failure conceive enlargement lymph nodes significantly associated brucellosis female association clinical signs positive results blood culture observed males none kennels carrying programmes control brucellosis sale infected dogs considered common practice yielding risks public health view zoonotic potential infection
objective investigate family argentina proposita year old woman moderate bleeding tendency children showed mild bleeding tendency mother husband asymptomatic clotting immunological molecular biology techniques used partial thromboplastin prothrombin russell viper venom clotting times moderately prolonged proposita whereas slightly prolonged children mother factor activity normal assay systems antigen less clotting factors platelet normal genetic analysis showed compound heterozygosis combination new mutation glnarg already known mutation glulys children intermediate levels normal carriers one two mutations present proposita first observation deficiency argentina copyright wolters kluwer health inc rights reserved
interspecies difference important issue toxicology research compared potential vitro metabolism human porcine rat hepatocytes weeks culture organotypical culture model reflects vivo situation three species show similar ldh rates albumin measurements showed rat cells twice active human porcine hepatocytes ethoxyresorufin deethylase erod activity rat hepatocytes cells distinctly higher porcine human cells cells respectively furthermore activity rat erod increases slightly prolonged time culture whereas porcine human enzymes slightly decrease concerning ethoxycoumarin deethylase ecod enzyme activities found three different ranges rat cells show highest activity cells porcine hepatocytes exhibit activity cells human activity lowest cells three species show similar decreasing trend ecod period study regarding biotransformation testosterome human porcine liver cells form three major metabolites whereas rat cells form mixture measured metabolites hence vitro metabolism using porcine hepatocytes would much scientific sense one using rat hepatocytes since metabolic pathways much closer human metabolism published elsevier ireland ltd
fungal specific cells described biomarker invasive aspergillosis influence sample storage detection cells assessed six hour delay prior pbmc isolation associated decrease cell viability alterations cellular composition sample results reduction fumigatus specific cells due reduced assay sensitivity increased background values unstimulated samples prompt cell measurement feasible isolated pbmcs frozen degrees degrees processed later comparable assay reliability mean value fresh thawing pearson coefficient
physiological circumstances various tolerogenic mechanisms support protection self structures immune responses however quantitative qualitative changes regulatory immune cells mediators evoke auto reactive immune responses upon susceptible genetic background along presence concomitant etiological factors autoimmune disease may develop transplant immunology tolerogenic mechanisms also critical since balance alloantigen reactive effector cells regulatory immune cells ultimately determine whether graft accepted rejected better understanding immunological tolerance potential modulations immune regulatory processes crucial developing effective therapies autoimmune diseases well organ transplantation review focus novel insights regarding impaired immune regulation relevant factors contributing development auto reactive graft reactive immune responses autoimmune diseases transplant rejection respectively also address promising approaches modification immune regulatory processes tolerogenic mechanisms autoimmunity solid organ transplantation may beneficial future therapeutic strategies elsevier rights reserved
clopidogrel resistance patients acute coronary syndrome acs one key causes recurrent cardiovascular disease cvd events percutaneous coronary intervention pci clopidogrel targets platelet membrane receptor pry inhibit platelet aggregation via adenosine diphosphate adp study aimed investigate relationships pry polymorphisms risk clopidogrel resistance adverse cvd events pci january december patients diagnosed acs undergoing pci treated clopidogrel recruited prospective cohort study data regarding demographics medication intake acs lesion recorded whole blood samples collected biochemical tests adp induced platelet aggregation ratio detection pry genotyping pry genotyping performed polymerase chain reaction left ventricular ejection fraction calculated echocardiography months follow data regarding adverse cvd event death recorded allele frequencies variation alleles pry respectively patients variations pry significantly higher risk clopidogrel resistance total cardiovascular events compared wild type genotype moreover multivariable logistic regression showed patients variations odds ratio confidence interval also significantly higher risk clopidogrel resistance also variations significantly increased risk post pci cvd events accounting confounding factors pry gene polymorphisms significantly associated higher risk clopidogrel resistance sequential cardiovascular events chinese acs patients pci
mature somatic cells reversed pluripotent stem cell like state using defined set reprogramming factors numerous studies generated induced pluripotent stem cells ipscs various somatic cell types transducing four yamanaka transcription factors oct sox klf myc study ipscs remains cutting edge biological clinical research particular patient specific ipscs used pioneering tool study disease pathobiology since ipscs induced tissue individual rheumatoid arthritis chronic inflammatory disease classified destruction cartilage bone structure joint synovial hyperplasia one major reasons symptoms lead results fibroblast like synoviocytes flss main component cells hyperplastic synovium flss joint limitlessly proliferate eventually invading adjacent cartilage bone currently hyperplastic synovium removed surgical procedure removed synovium used research material reflects inflammatory condition joint major player pathogenesis flss used material generate investigate ipscs patients study used flss patient generate ipscs using lentiviral system discovered flss generate patient specific ipsc ipscs generated flss used tool study pathophysiology future
astrocytes important normal brain functioning astrocytes metabolic regulators brain exert many functions preservation blood brain barrier bbb function clearance toxic substances generation antioxidant molecules growth factors functions fundamental sustain function survival neurons brain cells reasons protection astrocytes become relevant prevention neuronal death brain pathologies parkinson disease alzheimer disease stroke neurodegenerative conditions currently different strategies used protect main astrocytic functions neurological diseases including use growth factors steroid derivatives mesenchymal stem cell paracrine factors nicotine derivatives computational biology tools moreover combined use experimental approaches bioinformatics tools ones obtained system biology allowed broader knowledge astrocytic protection normal pathological conditions present review highlight recent paradigms assessing astrocyte protection using experimental computational approaches discuss could used study restorative therapies brain pathological conditions
successful detection small rnas tiny rna similar length northern blotting dependent improved northern blot protocols combine chemical crosslinking rna ethyl dimethylaminopropyl carbodiimide edc positively charged membranes use native polyacrylamide gels development highly sensitive specific probes modified locked nucleic acids lna protocol show northern blot detection tiny rnas digoxigenin labeled dna lna mixmer probes highly sensitive specific method hands sensitive using corresponding dna lna mixmer probe end label
work standardising methods field animal species differentiation intensified germany recent years least due horsemeat scandal even though hardly ever positive findings examinations detect horse elements foods lasagne animal species differentiation altogether ranks high detecting adulteration foods article therefore summarises current status analysis techniques germany focus standardisation established working group biochemical molecular biological analytics lebensmittelchemische gesellschaft food chemistry society within german chemical society support experts working group molecular biology techniques differentiating plant animal species german food feed code lfgbi immunology molecular biology task force food hygiene food animal origin working group alts germany
background food allergy important public health problem affects children adults severe even life threatening may increasing prevalence beginning national institute allergy infectious diseases working organizations advocacy groups led development first clinical guidelines diagnosis management food allergy recent landmark clinical trial emerging data suggest peanut allergy prevented introduction peanut containing foods beginning infancy objectives prompted findings along professional organizations federal agencies patient advocacy groups national institute allergy infectious diseases facilitated development addendum guidelines specifically address prevention peanut allergy results addendum provides separate guidelines infants various risk levels development peanut allergy intended use wide variety health care providers topics addressed include definition risk categories appropriate use testing specific ige measurement skin prick tests oral food challenges timing approaches introduction peanut containing foods health care provider office home addendum guidelines provide background rationale strength evidence recommendation conclusions guidelines developed early introduction peanut containing foods diets infants various risk levels peanut allergy published elsevier inc behalf american college allergy asthma immunology
question specific properties life compared nonliving things accompanied biology throughout history times question generated major controversies largely diverging opinions basically mechanistic thinkers tried understand organismic functions terms nonliving machines opposed tried describe specific properties even special forces active within living entities question included human body controversies always special relevance self image also touched practical issues medicine second half twentieth century seemed resolved organisms explainable basically physicochemical machines especially perspective molecular biology seemed clear organisms need explained solely chemical functions component parts although resistance view never ceased research program working quite successfully science today knows lot physiological chemical processes within organisms however new doubts arise questioning whether mere continuation analytical approach finally generate fundamental understanding living entities beginning twenty first century quest new synthesis actually comes analytical empiricists hypothesis present paper empirical research developed far enough today reveals materials prerequisites understand specific properties life without recourse mysterious forces possible generate answers age old question using recent empirically generated knowledge view contradict results reductionistic research rather grants meaning within context organismic systems also may increase practical usefulness although several properties discussed different authors usually concentrated single one paper describes ten specific properties living entities deduced contemporary science aim demonstrate results empirical research show necessity well possibility development new conception life build coherent understanding organismic functions
numerous findings demonstrate strong association maternal health pregnancy cardiovascular disease adult offspring purpose present study test whether maternal gestational hypertension modulates brain renin angiotensin aldosterone system raas proinflammatory cytokines sensitizes angiotensin elicited hypertensive response adult offspring addition role renal nerves raas sensitization process investigated reverse transcription polymerase chain reaction analyses structures lamina terminalis paraventricular nucleus indicated upregulation mrna expression several raas components proinflammatory cytokines week old male offspring hypertensive dams increases significantly inhibited either renal denervation performed weeks age treatment angiotensin converting enzyme inhibitor captopril drinking water starting weaning tested beginning weeks age pressor dose angiotensin resulted enhanced upregulation mrna expression raas components proinflammatory cytokines lamina terminalis paraventricular nucleus augmented pressor response male offspring hypertensive dams augmented blood pressure change increases gene expression offspring abolished either renal denervation captopril results suggest maternal hypertension pregnancy enhances pressor responses angiotensin overactivity renal nerves raas male offspring upregulation brain raas proinflammatory cytokines offspring may contribute maternal gestational hypertension induced sensitization hypertensive response angiotensin
temperature bottleneck anaerobic treatment domestic wastewater temperate climates previous attempts achieve anaerobic treatment low temperatures attempted acclimatize mesophilic sludge failed temperatures degrees describe alternative approach using communities environments exposed low temperatures evolutionary time scales seed reactors batch reactors inoculated mixture soils sediments high arctic alpine lake treat sterilized raw domestic wastewater degrees evaluate intrinsic treatment capacity bacteria specific rates methanogenesis hydrolysis evaluated specific methanogenic activity degrees fmol cell day respectively specific putative hydrolysis rates fgrams cod cell day hydrolysis twice temperature sensitive methanogenesis respectively specific rates ten times higher previously observed microcosms fed settled wastewater temperatures results imply inoculating reactors cold adapted communities promising way develop biomass capable treating anaerobic wastewater treatment low temperatures whilst achieving effluent conforms directive cod standards large scale reactors feasible satisfactory cell concentrations achieved published elsevier ltd
cell transfer mother fetus demonstrated previously several species possess haemochorial placenta humans mice rats etc report assessment fetal maternal microchimerism non transgenic non new zealand white rabbits pregnant transgenic fetuses non newborns construct including venus fluorophore cdna driven ubiquitous cytomegalovirus enhancer chicken actin promoter caggs previously integrated rabbit genome sleeping beauty transposon system three different methods fluorescence microscopy flow cytometry quantitative polymerase chain reaction qpcr employed search cells gene products blood tissues non rabbits venus positive peripheral blood mononuclear cells pbmcs detected blood non littermates non flow cytometry tissue samples liver kidney skeletal heart muscle also proved venus negative examined fluorescence microscopy histology sections pbmcs rabbits showed robust venus protein expression case genomic dna gdna sourced tissue samples non rabbits caggs promoter specific fragments could amplified qpcr data showed lack detectable cell transfer non rabbits gestation
paper applied hot water induced thermotherapy system foot based oriental medicine principle dongeuibogam concerned notion head kept cool feet warm objective study determine influence cardiovascular system effected physiological parameters inherent thermal stimulation temperature degrees therefore relevant physiological parameters blood flow heart rate blood pressure oxygen saturation leg temperature associated cardiovascular system selected analysis experimental equipment used study included hot water system designed feet pre post experimental conditions temperature degrees assessed healthy volunteers days pre post measurements obtained minutes biosignal transition results experiments follows blood flow min inc heart rate bpm inc blood pressure mmhg max dec min dec oxygen saturation inc dec decrease inc increase according results hot water thermotherapy applied foot appear exert influence cardiovascular system also appears generally improve human metabolism
adult cell leukemia lymphoma atll peripheral cell neoplasm caused human cell lymphotropic virus type htlv neoplastic cells highly pleomorphic usually phenotypically reported case year old woman presenting fever abdominal distention lymphadenopathy leukocytosis hypercalcemia nodal biopsy showed diffuse infiltration monomorphic small medium sized atypical lymphocytes expressing cda terminal deoxynucleotidyl transferase alk initial diagnosis lymphoblastic leukemia lymphoma made based cytomorphology double negativity expression diagnosis later revised atll based positive serology study anti htlv antibody confirmation clonal integration htlv proviral dna tumor tissues southern blotting analysis patient stage ivb disease died septic shock courses chemotherapy months diagnosis immunohistochemical staining archival atll tissues showed positive rate tumors case showed atll atypical morphology immunophenotype htlv non endemic areas might pose diagnostic challenge expression frequent atll
alanine dehydrogenase bacillus subtilis basaladh strictly dependent nadh redox cofactor efficiently catalyzes reductive amination pyruvate alanine using ammonia amino group donor enable application basaladh regenerating enzyme coupled reactions nadph dependent alcohol dehydrogenases alterated cofactor specificity nadh nadph via protein engineering introducing two amino acid exchanges high catalytic efficiency nadph achieved cat min cat min almost wild type enzyme nadh cat min cat min conversely recognition nadh much diminished mutated enzyme cat min basaladh applied coupled oxidation transamination reaction chiral dicyclic dialcohol isosorbide diamines catalyzed ralstonia alcohol dehydrogenase paracoccus denitrificans aminotransferase thus allowing recycling two cosubstrates nadp ala excellent cofactor regeneration recycling factors nadp ala observed engineered basaladh small scale biocatalysis experiment opens biocatalytic route novel building blocks industrial high performance polymers international union biochemistry molecular biology inc
many years north american cyprinid fish macrhybopsis aestivalis common name speckled chub regarded single widespread morphologically variable species occurring rivers throughout much mississippi valley geographically adjacent eastern gulf slope drainages west rio grande basin texas new mexico mexico eisenhour completed morphological study western populations speckled chub results appeared thereafter published form eisenhour demonstrated existence five valid species west mississippi river aestivalis marconis australis tetranema hyostoma name aestivalis shown restricted population occurring rio grande geographically adjacent rio san fernando system northeastern mexico eisenhour considered populations throughout middle mississippi valley major tributaries single morphologically variable species hyostoma also indicated populations macrhybopsis eastern gulf slope drainages may represent complex species genetic confirmation eisenhour conclusions regarding western species appeared publication underwood also showed western populations hyostoma presently recognized genetically much complex previously considered meanwhile present authors involved companion study eastern populations macrhybopsis genetic summary eastern gulf coast species published mayden powers based findings four species recognized southeastern drainages identified species although formal taxonomic descriptions included genetic data combination meristic morphometric morphological data presented herein form basis revised classification eastern macrhybopsis populations including formal descriptions four new species eastern gulf coast drainages
considerable effort recently directed toward implementation molecular bioassays digital microfluidic biochips dmfbs however today solutions suffer drawback multiple sample pathways supported chip reconfigurable devices efficiently exploited result impractical manual intervention needed process protocols gene expression analysis overcome problem first describe benchtop experimental studies understand gene expression analysis relationship biochip design specification introduce integrated framework quantitative gene expression analysis using dmfbs proposed framework includes spatial reconfiguration technique incorporates resource sharing specifications synthesis flow interactive firmware collects analyzes sensor data based quantitative polymerase chain reaction real time resource allocation scheme responds promptly decisions protocol flow received firmware layer framework combined cyberphysical integration develop first design automation framework quantitative gene expression simulation results show adaptive framework efficiently utilizes chip resources reduce time result without sacrificing chip lifetime
polg gene encodes catalytic subunit dna polymerase gamma essential mitochondrial dna mtdna replication repair mutations polg linked spectrum clinical phenotypes resulting autosomal recessive dominant mitochondrial diseases mutations associated heterogeneous phenotypes presenting varying severity different ages onset ranging neonatal period late adult life screened patients polg mutations patients underwent complete neurological examination cases muscle biopsy performed detected different variations unrelated italian patients two mutations novel mapped pol domain thrdup alathr enzyme also report new cases carrying controversial variations previously described incompletely penetrant variant unknown significance study increases range clinical presentations associated mutations polg gene underlining peculiar clinical features peo associated corneal edema epilepsy severe neuropathy achalasia addition two new substitutions including second report frame duplication growing list defects increases value polg genetic diagnosis range neurological presentations
biliary adenofibroma rare primary hepatic neoplasm recognized world health organization classification although cases reported date series includes extended follow early case reports novel cases clinical history histology reviewed cases tumor dna analyzed point mutations multiplex polymerase chain reaction copy number alterations array comparative genomic hybridization patients included females males presenting years age tumors ranging diameter tumors similar morphology tubules cysts lined mainly bland mildly atypical cuboidal epithelium embedded fibrous stroma multiplex polymerase chain reaction identify mutations tumors tested three tumors tested array comparative genomic hybridization showed chromosomal copy number alterations including amplifications ccnd erbb three patients underwent resection recurrence years follow one patient alive months resection two patients margin positive resections local recurrence years surgery patient distant metastasis distinct morphology multiple clonal cytogenetic alterations biliary adenofibromas indicate lesions neoplastic amplifications ccnd erbb typical benign neoplasms suggest tumors may ability behave aggressively however clinical outcomes patients suggest neoplasms slowly progressive
epithelial cells oral mucosa eom responsible important functions like primary protection oral mucosa external aggressions building mechanical barrier microorganisms mechanical damage toxic material thermal regulation secretion different classes inflammatory mediators eom could interesting tool cellular molecular biology research usually eom collected painful invasive process study propose alternative method cultivate eom collected non invasive scraping method oral mucosa papanicolaou staining showed mainly two kinds epithelial cell population eom scraping result five culture methods tested results revealed eom successfully cultured murine feeder layer addition eom could frozen thawed without morphology changes loss viability findings suggest eom considered good cell source many purposes genetic studies diagnosis cell therapy
intergenic region hemoglobin nucleosome assembly protein nap genes paramecium caudatum macronuclear genome previously found heterogeneously composed cloning intergenic region macronuclear genomic dna identified four unique dna fragments different sizes sequencing cloned fragments revealed extreme heterogeneity characteristics internal eliminated sequence ies imprecise internal deletion sequences iidss intergenic region missing sequences rich direct repeats existed boundaries southern blotting total genomic dna polymerase chain reaction pcr total genomic dnas indicated exist dozen dna fragments different sizes intergenic region likely heterogeneity found caudatum macronuclear genome results variable removal intergenic region
green vegetative tissues moss physcomitrella patens possess powerful ability tolerate severe drought stress proteomics analysis revealed large number late embryogenesis abundant lea proteins key players drought tolerance photosynthetic tissues pplea member moss lea protein family selected function study using ectopic expression method rice molecular identification via pcr southern blotting tail pcr demonstrated pplea gene transformed inserted non encoded region chromosome rice expressed stably transgenic rice unexpectedly pplea protein emerged two high expressed spots gels generated transgenic rice suggesting pplea proteins complete compatible might modified rice growth physiological analysis showed seedlings transgenic pplea rice displayed altered phenotypes tolerance salt addition electrolyte leakage reduced transgenic pplea compared wild type stress conditions anti aggregation analysis found pplea protein expressed rice remained soluble high temperature addition native proteins transgenic pplea rice based nano analysis identified several proteins transgenic pplea rice increased heat stability results provide evidence role pplea salt tolerance stabilization client proteins elsevier inc rights reserved
paper details design development evaluation affective tutoring system ats learning system detects responds emotional states learner research development ats active relatively new field many studies demonstrating promising results however often practical way apply findings real world settings ats described paper utilizes generic affective application model infer appropriately respond learner affective state approach brings several advantages notably potential direct support use retrospective addition affect sensing functionality existing learning software skin conductivity heart rate variability measurements used infer affective activation valence evaluation involved experiment effectiveness fully functional ats compared nonaffective version conducted adult participants evaluation effectiveness tutoring system showed measurable improvements perceived learning may obtained modest level software development
remodeling endothelial basement membrane important atherogenesis since little known actual relationship type collagen matrix metalloprotease mmp endothelial cells ecs shear stress blood flow performed quantitative analysis type collagen mmp ecs high shear stress mrna type collagen ecs exposed high shear stress dyn higher expression compared ecs exposed static condition low shear stress dyn proline uptake analysis fluorography revealed remarkable increase type collagen high shear stress contrast zymography revealed exposing high shear stress however similar positivity leveled intracellular mmp control high shear stress exposed ecs reduced secretion mmp ecs results northern blotting gelatin zymography monitoring intracellular trafficking gfp labeled mmp revealed mmp secretion ecs completely suppressed high shear stress intracellular mrna expression protein synthesis transport mmp affected conclusion suggest high shear stress regulates type collagen synthesis regulates mmp secretion ecs plays important role remodeling endothelial basement membrane may suppress atherogenesis
background diarrhea common complication solid organ transplant sot associated allograft failure death evidence based guidelines exist evaluation diarrhea sot recipients performed cost analysis derive testing algorithm diagnosis community onset diarrhea minimizes costs without compromising diagnostic yields design cost analysis performed retrospective cohort sot admissions community onset diarrhea month period stepwise testing model applied population level assess test costs relative diagnostic yields results month period diagnostic tests performed returned positive diagnostic testing accounted hospital costs tests lowest cost per decrease false omission rate stool clostridium difficile polymerase chain reaction pcr serum cytomegalovirus quantitative pcr stool norovirus pcr stool culture time event analysis found significant difference length hospital stay patients without testing conclusions stepwise testing strategy reduce costs without compromising diagnostic yields first stage testing recommend assessment difficile cytomegalovirus food borne bacterial pathogens persistent diarrheal episodes second stage evaluation include stool pcr giardia cryptosporidium enzyme immunoassay stool ova parasite reductions immunosuppressive therapy possibly endoscopy although testing relatively low cost per recommend testing second stage evaluation diagnosis may lead changes clinical management reductions length hospital stay
watermelon citrullus lanatus important crop cucurbitaceae family fruit production worldwide production bacterial fruit blotch bfb caused acidovorax citrulli acidovorax avenae subsp citrulli important limiting factor volume value crops pathogen known seed borne pathogen infested seeds primary source inoculum hence rapid sensitive method detecting citrulli seeds would important tool management bfb study sought develop method detect citrulli bacterial cells based taqman probe based insulated isothermal pcr tiipcr assay firstly specific primers probe designed based specific dna fragment genome citrulli pcr amplification performed plasmid dna adjust components pcr reagents concentrations primers magnesium chloride taq dna polymerase results revealed copies plasmid dna detectable within modified reagents tiipcr moreover bacterial cells reaction tube detectable detection rate condition fluorescent signal intensification based results concluded specific rapid sensitive method based tiipcr successfully developed detect bacterial cells citrulli
effects heating structure stability multimeric tet aminopeptidase apdkam studied differential scanning calorimetry tryptophan fluorescence quenching dynamic light scattering thermally induced structural changes apdkam found occur two phases local conformational changes occur degrees associated thermal denaturation protein global structural changes degrees induced irreversible thermal unfolding protein accompanied spontaneous aggregation results may explain bell shaped temperature dependence maximum similar degrees previously observed enzymatic activity apdkam interestingly thermal unfolding apdkam degrees accompanied called blue shift shift trp fluorescence spectrum toward shorter wavelength point view apdkam quite different proteins characterized long wavelength shift spectrum red shift upon denaturation blue shift trp fluorescence spectrum reflects changes environment trp residues becomes hydrophobic upon denaturation molecular structure apdkam determined ray diffraction monomer apdkam six trp residues five external surface dodecamer therefore blue shift trp fluorescence spectrum explained least partly aggregation apdkam occurs simultaneously thermal denaturation probably makes environment trp residues hydrophobic
magellanic penguins spheniscus magellanicus native argentina chile falkland islands magellanic penguins highly susceptible blood parasites mosquito borne plasmodium spp documented causing high morbidity mortality zoos rehabilitation centres however date blood parasites detected wild magellanic penguins clear whether reflective true absence instead related insufficiency sampling effort failure diagnostic methods examined blood smears magellanic penguins argentinean coast tested blood samples nested polymerase chain reaction tests targeting haemoproteus plasmodium leucocytozoon babesia blood parasites detected analysing sampling effort previous studies climatogeography region found strong basis conclude haemosporidians infect wild magellanic penguins argentinean coast however present possible determine whether parasites occur chilean coast falkland islands furthermore troubling northward distribution expansion magellanic penguins poleward distribution shift vectors may lead novel opportunities transmission blood parasites
brewer wort challenging environment yeast contains predominantly alpha glucoside sugars exist two subgroups lager yeast saccharomyces pastorianus differ sugar utilisation performed wort fermentations compared representative strains groups respect ability transport ferment maltose maltotriose additionally mapped transporters malx agt mphx mtt southern blotting contrary previous observations group comprises diverse set strains varying ability transport ferment maltotriose eight group strains three efficiently utilised maltotriose property enabled presence transmembrane transporters seagt mtt variant group type strain cbs performed particularly well taking maltotriose higher rate maltose retaining significant transport activity temperatures low degrees analysis transporter distribution strain revealed increased copy number mtt gene encodes permease known higher affinity maltotriose maltose low temperature dependence transport propose much variation lager yeast fermentation behaviour determined presence absence specific transmembrane transporters
production human papillomavirus type major capsid protein undifferentiated cells negatively regulated several yet unidentified cis acting inhibitory rna elements among major element located within first nucleotides mrna northern blotting examined effect major element steady state level mrna transiently transcribed cells firefly luciferase fluc gene combined dna fragment encoding major element reported previously element regulated steady state level mrna efficient regulation achieved insertion element near end mrna resulting undetectable level mrna longer distance end mrna element weaker regulation half life mrna element similar normal fluc mrna element near end removed splicing steady state level resultant mrna raised readily detectable level steady state level rna synthesized rna polymerase influenced presence element taken together suggested dna region encoding major inhibitory element disturb transcription pre mrna degraded rna element mediated mechanism splicing step course mrna maturation
ornithodoros brodyi ornithodoros yumatensis two species distributed americas associated bats caves species similar morphology diagnostic traits adults detailed illustrated accurately study independence species validated basis molecular evidence using partial sequences rdna gene morphological differences dentition hypostome traits individual mammillae confirmed light scanning electron microscopy addition characteristics observed traits may serve differentiate species dorsal setae short thick yumatensis thin moderate size brodyi also observed conspicuous hood brodyi absent yumatensis another characteristic observed line setae near end tarsi brodyi formed less five setae yumatensis five main morphological difference larvae species number ventral setae circumanal pairs brodyi circumanal pairs yumatensis genetic divergence rdna sequences two species ranges
conjugated linoleic acids clas affect body fat gain carcinogenesis insulin resistance lipid peroxidation mammals several isomers cla exist isomers beneficial effects human metabolism scarce foods bacterial polyunsaturated fatty acid isomerases promising biotechnological catalysts cla production describe six crystal structures propionibacterium acnes polyunsaturated fatty acid isomerase pai apo product bound forms three domain flavoprotein previously undescribed folds outside fad binding site conformational changes hydrophobic channel toward active site reveal unique gating mechanism substrate specificity geometry substrate binding site explains length preferences fatty acids catalytic mechanism double bond isomerization formulated may altered change substrate specificity syntheses rare clas easily accessible precursors
positive effect lipoxygenase added enzyme active soy flour production white bread well established addition increasing mixing tolerance overall dough rheology lipoxygenase also effective bleaching agent known effects mediated enzyme coupled cooxidation gluten proteins carotenoids however mechanism whereby effects achieved yet fully understood order gain better understanding reactions governing beneficial effects lipoxygenases bread dough depth knowledge lipoxygenase catalytic mechanism required single review combining molecular enzymology lipoxygenase enzymes application baking industry presented review therefore focuses extraction molecular characterization lipoxygenases addition work done application lipoxygenases baking industry
review selected aspects interactions protein energy human metabolism nutrition following short account underlying metabolic basis effects energy protein metabolism contribution made whole body protein turnover metabolic rate discussed including relationship protein turnover energy metabolism different phases life effects changes energy metabolism intake nitrogen economy host also reviewed briefly explore relationship amino acid oxidation requirements indispensable amino acids interactions energy protein metabolism need investigated greater detail also must considered relation attempts establish precisely energy amino acid requirements people various circumstances
carbohydrates play key role biological activity numerous natural products many instances biosynthesis requires radical mediated rearrangements catalyzed radical sam enzymes btrn one enzyme responsible dehydrogenation secondary alcohol biosynthesis deoxystreptamine desii another example catalyzes deamination reaction necessary net deoxygenation glucose derivative route desosamine formation btrn desii represent two extensively characterized radical sam enzymes involved carbohydrate biosynthesis review summarize biosynthetic roles two enzymes mechanisms catalysis questions arisen investigations insight offer furthering understanding radical sam enzymology article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
currently effective approach monitoring early cell loss islet graft rejection following human islet transplantation hit due ethical technical constraints difficult directly study biomarkers islet destruction humans established humanized mouse model induced human cell death using adoptive lymphocyte transfer alt human islet grafts alt treated mice perigraft lymphocyte infiltration fewer insulin cells increased cell apoptosis islet specific mir used validate model expression mir significantly decreased grafts increased circulation alt treated mice hyperglycemia nanostring expression assay used profile human mirnas human islet grafts results validated using quantitative real time polymerase chain reaction found mir mir decreased human islet grafts following alt increased circulation prior hyperglycemia data demonstrate vivo model induced human cell destruction robust method identifying characterizing circulating biomarkers suggest mir mir serve novel biomarkers associated early human cell loss following hit
separation method described rapidly removing zinc interfering matrix components chloride digested biological samples prior measurement zinc stable isotopes icp method employs chelation zinc trifluoroacetylacetone tfa extraction chelate hexane destruction chelate dissolution zinc nitric acid determination complete separation zinc matrix salts achieved method employ chlorinated hydrocarbon solvents used earlier similar schemes cerium borosilicate glass tubes used sample digestion found potential problem measuring owing presence potential problem avoided using quartz digestion tubes correcting cerium monitoring accuracy verified independent method examples use stable isotopes zinc metabolic tracers human metabolism given detection limit method blank house urine pool found contain aas
background evidence adipocytokines play important role metabolism inflammation human metabolism dramatically changes inflammatory bowel disease ibd chronic inflammation hallmark disease studied serum levels leptin adiponectin resistin ghrelin patients ulcerative colitis crohn disease comparison healthy controls methods leptin adiponectin resistin active ghrelin serum levels measured ibd patients matched using commercially available enzyme linked immunosorbent assays leptin adiponectin resistin ghrelin levels correlated disease activity type localization treatment results mean serum leptin levels patients patients rnl mean serum adiponectin levels patients patients mean serum resistin levels patients patients mean serum ghrelin levels patients patients serum levels adipocytokines correlated either reactive protein levels clinical indices activity association serum adipocytokines levels disease localization patients found serum ghrelin significantly higher ileal compared colonic conclusions serum levels adiponectin resistin active ghrelin increased whereas serum levels leptin decreased patients ibd studies needed elucidate role adipocytokines ibd
pseudorabies virus prv mutant deletions genes glycoprotein glycoprotein constructed evaluated candidate vaccine strain protective virulent wildtype prv strain challenge pigs transfer plasmid piese constructed transfected prv genome ibrs cells generate recombinant mutant prv virus recombinant virus confirmed southern blotting indirect immunofluorescence assay ifa animal experiments immunogenicity tested prv enzyme linked immunosorbent assay elisa prv neutralizing assay prv elicited significant humoral immune responses prv prv immunization protected pigs lethal challenge virulent prv strain results suggested recombinant prv might considered potential candidate vaccine prv
homygene system pcr based amplification kit enables typing autosomal short tandem repeat str loci csfpo fga penta tpox vwa widely used chromosome str str loci gata dysa dysi dys dys dys dys dys dys dys dys dys amelogenin multiplex system designed simultaneous analysis amelogenin yallele mutation single source searches kinship including familial searching mixture profiles international data sharing forensic applications study multiplex system validated sensitivity specificity dna mixtures stability precision stutter reproducibility parallel tests pcr based conditions population analysis according scientific working group dna analysis methods swgdam developmental validation guidelines total alleles detected autosomal str loci among guangdong han individuals haplotypes found strs among unrelated males combined match probability cmp system calculated validation results showed system would robust reliable highly polymorphic informative forensic kit
lentinula edodes shiitake mushroom common edible mushroom high nutritional medical value although number genes involved fruit species identified little known process differentiation dikaryotic mycelium primordium study serial analysis gene expression sage applied determine gene expression profiles dikaryotic mycelium primordium edodes effort advance understanding molecular basis fruit body development total tags extracted dikaryotic mycelium primordium unique tags matched house expressed sequence tag est database difference expression profiles dikaryotic mycelium primordium suggests specific set genes required fruit body development transition mycelium primordium different hydrophobins expressed abundantly fewer structural genes expressed transcription translation became active different genes became involved intracellular trafficking stress responses expressed findings advance understanding fruit body development used cdna microarray hybridization northern blotting verify sage results found sage highly efficient performance transcriptome analysis knowledge first sage study mushroom british mycological society published elsevier ltd rights reserved
constraints based modeling emergent area systems biology includes increasing set methods analysis metabolic networks order refine predictions development novel methods integrating high throughput experimental data currently key challenge field paper present novel set constraints integrate tracer based metabolomics data isotope labeling experiments metabolic fluxes linear fashion constraints based elementary carbon modes ecms recently developed concept generalizes elementary flux modes carbon level illustrate effect ecms based constraints flux variability analysis approach applied previously published metabolic network involving main pathways metabolism glucose addition ecms based constraints substantially reduced determination resulting standard application flux variability analysis shows clear progress state art addition approach adjusted deal combinatorial explosion ecms genome scale metabolic networks extension applied infer maximum biosynthetic capacity non essential amino acids human metabolism finally linearity hallmark approach importance discussed methodological computational theoretical level illustrated practical application field isotope labeling experiments elsevier inc rights reserved
clinical progression new chemical entities pharmaceuticals remains hindered relatively slow pace technology development toxicology clinical safety evaluation particularly vitro approaches used preclinical early clinical phases drug development alleviate bottleneck developed metabolizing enzyme toxicology assay chip metachip combines high throughput catalysis cell based screening microscale platform metachip concept demonstrated using sol gel encapsulated activate prodrug cyclophosphamide major constituent anticancer drug cytoxan well compounds activated metabolism metachip provides high throughput microscale alternative currently used vitro methods human metabolism toxicology screening based liver slices cultured human hepatocytes purified microsomal preparations isolated purified technology creates opportunities rapid inexpensive assessment adme tox absorption distribution metabolism excretion toxicology early phases drug development thereby enabling unsuitable candidates eliminated consideration much earlier drug discovery process
studies opportunistic infections focus immunocompromised patients however lack information microsporidiosis healthy people immunocompetent worldwide study aimed detect identify microsporidia species immunocompetent orang ash living pahang malaysia orang ash collective term group indigenous people usually reside interior regions peninsular malaysia comprise total population malaysia lived poverty line poor housing conditions lack access safe drinking water adequate sanitation contaminated environment high illiteracy rate unhygienic practices people stool samples collected orang asli analyzed detecting presence enterocytozoon bieneusi encephalitozoon intestinalis polymerase chain reaction assay targeting small subunit ribosomal rna gene bieneusi detected individuals infection commonly found males females infected orang asli adults mean age years diarrhea gastrointestinal symptoms reported one case among individuals infected species findings clearly show exposure bieneusi may actually common reported accurate detection identification microsporidian species molecular technique improve therapy clinical manifestations prognosis infection antiparasitic therapy approved bieneusi hoped findings allow formulation better health management disease prevention advisories improvement standards health similar communities elsevier ireland ltd rights reserved
tufted deer species found china polymorphic sex chromosomes centrins centrosome components species yeast humans cetn gene isolated testis cdna library tufted deer expression pattern number gene copies gene structure studied date unknown reasons satisfactory genomic dna tufted deer obtained present study extracted high molecular weight genomic dna tissues tufted deer results showed genomic dna isolated successfully could used southern blotting cetn gene centrin transcripts shown exist testis retina intron single copy genome protein sequence analyses indicate terminal ser shown phosphorylated human centrin conserved except sequences human chimpanzee tufted deer
impacts two hydroponic plants cyperus alternifolius canna generalis apple snail pomacea canaliculata nutrient change behaviors kinetics alkaline phosphatase eutrophic water studied paper mesocosm experiment contained six different treatment systems conducted october november total removal rates alternifolius generalis total nitrogen total phosphorous chlorophyll chl contents respectively function organic hydrolysis decreased well terms lower velocity reaction lower max overlying water combined lower affinity substrate higher values interstitial water surface sediment contrary snails exhibited activation alkaline phosphatase water body higher max lower values interstitial water higher max sediment higher max despite high concentrations mesocosms obvious correlation found orthophosphate alkaline phosphatase activity apa study indicated induction repression mechanism work hypereutrophic water additionally remarkable feature snails coupled plants would aggravate eutrophication water column due grazing snails plants food source study highlighted investigate enzymology mechanism macrophyte snail phytoplankton systems give implications restoration eutrophied water using floating bed systems
genus malassezia comprises commensal yeasts human skin yeasts involved superficial infections also isolated deeper infections fungemia particularly certain risk patients neonates patients parenteral nutrition catheters little known malassezia epidemiology virulence due mainly difficulty distinguishing species currently species identification based morphological biochemical characteristics molecular biology techniques identify species certainty time consuming expensive aim study develop evaluate matrix assisted laser desorption ionization time flight maldi tof database identifying malassezia species mass spectrometry eighty five malassezia isolates patients three french university hospitals investigated strain identified internal transcribed spacer sequencing forty five strains six species malassezia furfur sympodialis slooffiae globosa restricta pachydermatis allowed creation maldi tof database forty strains used test database strains identified malassezia database log scores according manufacturer criteria repeatability reproducibility tests showed coefficient variation log score values conclusion new malassezia database allows easy fast reliable identification malassezia species implementation database contribute better rapid identification malassezia species helpful gaining better understanding epidemiology
reduced galactose phosphate uridylyltransferase gait activity associated genetic disease type galactosemia results increase cellular concentration galactose phosphate accumulation toxic metabolite combined aberrant glycoprotein glycolipid biosynthesis likely major factor molecular pathology mechanism gait established classical enzymological methods substituted enzyme reaction udp glucose results formation covalent ump histidine adduct active site uridylated enzyme react galactose phosphate form udp galactose structure enzyme escherichia coli reveals homodimer containing one zinc one iron ion per subunit enzymological structural knowledge provides basis understanding biochemistry critical step leloir pathway however high resolution crystal structure human gait required assist greater understanding effects disease associated mutations iubmb iubmb life
order provide additional information risk assessment fungicide metalaxyl main objectives elucidate interactions metalaxyl different human liver cytochrorne enzymes tentitatively identify semi quantify metabolites vitro identify human cyp enzymes responsible metabolism mean inhibitory concentrations pentoxyresorufin dealkylation cypb bupropion hydroxylation respectively biotransformation reactions hydroxylation demethylation lactone formation human liver microsomes predominant metabolites two hydroxymetalaxyl derivatives atropisomers one derivatives basis previous rat studies could hydroxymethyl methylphenyl methoxyacetyl alanine methyl ester dimethyl hydroxyphenyl methoxyacetyl alanine methyl ester amounts didemethylmetalaxyl dimethylphenyl hydroxyacetyl alanine lactone dimethylphenyl methylmorpholine dione higher homogenates microsomes carcinogenic dimethylaniline detected among nine major human cyps cypa one responsible metalaxyl hydroxylation cypb major isoform responsible demethylation lactone formation elsevier rights reserved
state art approaches obtaining new plant varieties based potential traditional breeding use modern methods achievements genetics genomics considered opportunities advantages marker assisted genomic selection well importance developing advanced methods phenomics genome editing discussed
hanahan weinberg described six distinct biological properties cancer cells enable tumor growth metastasis properties referred traditional hallmarks cancer recent discoveries elucidated hallmarks including evasion immune destruction tumor cells disrupt anticancer response pathways review discusses cancer immunology new treatment strategies aimed restoration antitumor immune responses
increasing body evidence indicates relevance microbiota pulmonary health disease independent investigations recently demonstrated lung harbors resident microbiota therefore intriguing lung microbiota shape pulmonary immunity epithelial barrier functions discuss ways composition microbial community lung may influence pulmonary health vice versa factors determine community composition prominent microbiota body sites intestinal one may also contribute pulmonary health disease however difficult discriminate influences lung gut microbiota due systemic mutuality communities focuses asthma respiratory infections discuss microbiota lung gut determine pulmonary immunity barrier functions
nitrogen doped carbon sphere ndcs average diameter ranging prepared glucose melamine mixture starting materials ethylene glycol solvent reducing agent solvothermal method microstructures ndcs characterized ray photoelectron spectroscopy xps xrd pattern raman spectra ndcs exhibited highly electrocatalytic activity towards oxidation biomolecules ascorbic acid dopamine uric acid due unique structure properties originating nitrogen doping new finding provides novel promising candidate advanced electrode material simultaneous determination human metabolism
arthrobacter simplex microorganism used steroid drug biotransformation cortisone acetate prednisone acetate enzyme ketosteroid dehydrogenase encoded ksdd gene plays important role bioconversion process improve biotransformation efficiencies industrial strain genetic manipulation system simplex developed additional copies ksdd gene control cat promoter pxmj transferred strain simplex integrated rdna sites yielding series recombinant strains one recombinant strains designated simplex exhibited superior properties biotransformation substrate concentration highest production recombinant strain reached approximately higher wild type strains incubation time bioconversion reduced southern blotting analysis recombinant strain indicated two copies deregulated ksdd genes integrated rdna sites means two five rrna operons insertionally disrupted recombinant strain however disruption two rrna operons affect growth rate recombinant strain survived thrived desired conditions addition new strain genetically stable generations without use antibiotics selection superior characteristics make new strain suitable wild type strain production
treatment renal failure changed little decades organ transplantation dialysis continue represent therapeutic options available however decades fundamental research response kidney acute injury processes driving progression chronic kidney disease beginning open doors new options similarly continued investigations cellular molecular basis normal kidney development together major advances stem cell biology delivering options regenerative medicine possible recently decade ago review discuss advances regenerative medicine may applied kidney cover cellular therapies focused ameliorating injury improving repair well advancements generation new renal tissue stem progenitor cells
monoclonal antibodies universal binding molecules widely used biomedicine research nevertheless generation binding molecules time consuming laborious due complicated handling lack alternatives aim protocol provide one standard method generation monoclonal antibodies using hybridoma technology technology combines two steps step appropriate immunization animal step fusion lymphocytes immortal myeloma cells order generate hybrids possessing parental functions production antibody molecules immortality generated hybridoma cells recloned diluted obtain stable monoclonal cell cultures secreting desired monoclonal antibody culture supernatant supernatants tested enzyme linked immunosorbent assays elisa antigen specificity selection appropriate cell clones cells transferred mass cultivation order produce desired antibody molecule large amounts purification antibodies routinely performed affinity chromatography purification antibody molecule characterized validated final test application whole process takes months development high risk antibody work desired test system
acetyl carbamoyl hydroxy ethyl cysteine iso gama could identified human metabolite acrylamide study report excretion iso gama human urine single oral administration deuterium labelled acrylamide one healthy male volunteer ingested dose equivalent dose bodyweight period urine collected iso gama levels analysed esi excretion iso gama begins five hours application rises maximum concentration max quantified urine excreted max excretion pattern parallel major oxidative metabolite acetyl carbamoyl hydroxy ethyl cysteine gama total recovery iso gama applied dose together acetyl carbamoylethyl cysteine aama gama applied dose eliminated mercapturic acids elimination kinetics three mercapturic acids compared show dietary doses acrylamide cause overload detoxification via aama lead formation carcinogenic glycidamide human body
erv essential respiration viability fad dependent thiol oxidase erv alr augmenter liver regeneration sub family essential component mitochondria import assembly mia pathway playing important role oxidative folding mitochondrial intermembrane space ims proteins linking mia pathway mitochondrial respiratory chain via cytochrome cyt importance erv alr enzymes also demonstrated recent study single mutation human alr leads autosomal recessive myopathy fonzo ronchi lodi fassone tigano lamperti corti bordoni fortunato nizzardo hum genet however molecular mechanism disease still unclear present study use yeast erv model provide clear evidence progressive functional defect catalytic activity corresponding erv mutant show fad cofactor released erv catalytic cycle led inactivation enzyme also characterized effects mutation folding stability erv tested vitro findings vivo using yeast genetic approach results present study allow provide model functional defect erv could potentially extended human alr provides insights molecular basis autosomal recessive myopathy
larval pigment pattern silkworm bombyx mori formed melanin ommochromes pteridines development pigments synthesized autonomously possibly also mutual interaction yield unique pigment patterns order find key trigger pigment pattern formation developmental changes pteridine biosynthesis studied using quail mutant darker larval marks formed melanin abundance ommochromes integument current study emphasis placed analysis gtp cyclohydrolase gtp key enzyme biosynthesis pteridines development silkworm results northern blotting showed quail mutant strong signals gtp mrna appeared around period ecdysis signals appeared background strain used also gtp activities pteridine content higher quail mutant compared background strain results strongly suggest pteridine biosynthesis closely linked formation melanin ommochromes also suggested silkworm recessive gene may involved regulation pigment pattern formation
manganese superoxide dismutase mnsod plays important role crustacean immune defense reaction eliminating oxidative stress knowledge mnsod molecular level allows understand regulatory mechanism crustacean immune system novel mitochondrial manganese superoxide dismutase mmnsod cloned hepatopancreas chinese shrimp fenneropenaeus chinensis rapid amplification cdna ends race pcr full length cdna consists open reading frame encoding amino acids deduced amino acid sequence contains putative signal peptide amino acids sequence comparison showed mmnsod chinensis shares identity giant freshwater prawn macrobrachium rosenbergii blue crab callinectes sapidus respectively mmnsod transcripts detected hepatopancreas hemocytes lymphoid organ intestine ovary muscle gill northern blotting pcr analysis indicated mmnsod showed different expression profiles shrimp hemocytes hepatopancreas artificial infection spot syndrome virus wssv addition fusion protein containing mmnsod produced vitro esi analysis showed two peptide fragments gdvntvislapalk nvrpdyvnaiwk recombinant protein identical corresponding sequence rosenbergii mmnsod enzyme activity refolded recombinant protein also measured elsevier ltd rights reserved
stable transformation plants powerful tool hypothesis testing rapid reliable evaluation method transgenic allele copy number homozygosity vital analysing transformations suitability southern blot analysis thermal asymmetric interlaced tail pcr quantitative pcr digital droplet pcr estimate dna copy number locus complexity homozygosity compared transgenic tobacco southern blot analysis ddpcr three generations transgenic offspring contrasting zygosity copy number entirely consistent whereas tail pcr often underestimated copy number qpcr deviated considerably southern blot results lower precision higher variability ddpcr comparison segregation analyses ddpcr progeny plants showed least lines carried multiple dna insertions per locus lead unstable transgene expression segregation analyses failed detect multiple copies presumably close linkage shows importance routine dna copy number estimation based results ddpcr suitable method reliable southern blot analysis yet much faster protocol application ddpcr large plant genomes provided genetic transformation used increasingly public domain test range hypotheses concerning gene action arabidopsis broad range plants major challenge though particularly species relatively long life cycles identifying individuals homozygous insert dna modification necessary provide homozygous lines southern blotting traditional approach slow requires considerable skill various pcr methods used accelerate testing reliable however show recently developed digital droplet pcr effective southern blotting yet faster capable high throughput protocol application ddpcr provided together evidence efficacy
true beaked whale mesoplodon mirus true poorly known member ziphiidae family distribution northern hemisphere thought restricted temperate warm temperate waters north atlantic stranding records southern hemisphere suggest wider antitropical distribution extending waters atlantic coast brazil south africa mozambique australia tasman sea coast new zealand paper reports first molecular confirmation occurrence true beaked whale southern limit distribution recorded northeast atlantic azores canary islands macaronesian ecoregion describes new colouration species using evidence whale molecular species confirmation iii contributes sparse worldwide database live sightings including first underwater video recording species close images calf species identification confirmed two cases using mitochondrial dna control region cytochrome gene markers subadult male true beaked whale stranded hierro canary islands november subadult male found floating dead near faial azores july whale stranded canary islands clearly delimited white area head extending posteriorly tip beak cover blowhole dorsally gular grooves ventrally colouration contrasts previous descriptions species may rare exemplifies variability colouration true beaked whales north atlantic confirmed live sightings data recording several observations species deep relatively coastal waters azores canary islands suggests archipelagos may unique locations study behaviour enigmatic true beaked whale
introduction almost six decades bariatric surgery variety surgical approaches treating morbid obesity developed history evolution rather prior techniques continually superseded new ones broad choice surgical solutions based restrictive malabsorptive humoral effects combinations thereof available fact recent years advent surgically modifying human metabolism promises new approaches ameliorate traditionally medically treated metabolic entities diabetes even non obese understanding various metabolic effects led paradigm shift bariatric surgery solely weight reducing procedure metabolic surgery affecting whole body metabolism conclusion bariatric surgeon faces challenge opportunity selecting suitable technique individual case assist decision making review metabolic surgery principles current concepts presented tracing historical development describing various surgical techniques elucidating mechanisms glycemic control achieved involve favorable changes insulin secretion insulin sensitivity gut hormones adipokines energy expenditure appetite preference low glycemic index foods well exploring fascinating future potential new interdisciplinary field
objective determine role dkkl mouse development viability fertility design prospective experimental study setting government research institution animal mice cbl bdf svj strains well transgenic mice mixed cbl svj strains used studies intervention expression dkkl gene characterized early mouse development effects dkkl ablation reproduction fertility characterized vitro vivo main outcome measure dkkl rna expression determined northern blotting hybridization well quantitative reverse transcriptase polymerase chain reaction assays vitro fertilization assays used assess fertility sperm male mice lacking functional dkkl result dkkl gene unique mammals expressed primarily developing spermatocytes product localized acrosome mature sperm show dkkl also expressed trophectoderm placental lineage surprisingly embryos lacking dkkl protein developed viable fertile adults nevertheless ability sperm lacked dkkl protein fertilize wild type eggs severely compromised vitro defect could overcome either removal zona pellucida presence wild type sperm dkkl either directly indirectly facilitates ability sperm penetrate zona pellucida penetration zona pellucida dkkl sperm delayed vivo well vitro delay vivo compensated factors preimplantation development accordingly dkkl males offer vitro fertilization model identifying factors may contribute infertility conclusion dkkl mammalian specific acrosomal protein strongly affects vitro fertilization although effect attenuated vivo fertil steril american society reproductive medicine
protein heterogeneity may result many factors often closely related regulation biological mechanisms review addresses one source protein heterogeneity translation genetic variability transcriptional modulation protein level provide overview customized protein sequence databases generated using genomic transcriptomic sequence information conjunction approaches increase protein sequence coverage aid gaining deeper insight variability protein level modem approaches dna rna sequencing open possibility obtain detailed sequence information individual genomes transcriptomes single nucleotide resolution studies tried correlate genetic variability important biological consequences risk developing disease defining personalized approach towards therapy also called personalized precision medicine linking genomic transcriptomic information complex biological mechanisms however remained elusive due fact direct cause effect relationship changes dna rna level downstream consequences review give overview challenges integrating genomics transcriptomics data proteomics data link variability dna rna level protein variability protein species biological significance manuscript focuses recent trend proteomics namely integration genomic proteomic data genetic transcriptomic variability accounts considerable part protein variability basis many protein species many yet described protein level many also identified proteins peptides unknown function review highlights challenges current proteomics methodology notably incomplete sequence coverage make difficult appreciate full complexity proteome leads fact much variability dna rna level captured protein level outline strategies ameliorate situation elsevier rights reserved
protein protein interaction vital process drives many important physiological processes cell also implicated several diseases though protein protein interaction network quite complex understanding interacting partners using silico well molecular biology techniques provide better insights targeting interactions targeting protein protein interaction small molecules challenging task druggability issues nevertheless several studies kinetics well thermodynamic properties protein protein interactions immensely contributed toward better understanding affinity complexes recent studies hot spots interface residues opened new avenues drug discovery process approach used design hot spot based modulators targeting protein protein interaction objective normalizing interactions authors production hosting elsevier behalf king saud university open access article ndlicense http creativecommons org licenses
study used cytotoxicity assays proteomic gene expression analyses examine difference response cells two silica particles differ physical properties namely cristobalite quartz min sil cytotoxicity assays lactate dehydrogenase release bromo deoxyuridine incorporation cellular atp showed silica particles could cause cell death decreased cell proliferation metabolism human lung epithelial cells cytotoxicity assays revealed little difference exposures proteomic gene expression analyses unveiled similar unique molecular changes cells instance two dimensional gel electrophoresis data indicated expression proteins cell death aldha htra prdx cell proliferation fscn hnrnpab pgk pathways significantly different two silica particles reverse transcription polymerase chain reaction data provided additional evidence supporting proteomic findings preliminary assessment physical differences suggested extent surface interaction particles cells could explain observed biological effects however differential dose response curves genes proteins suggest physical attributes particulate matter also contribute particulate matter related cellular toxicity results demonstrated toxicoproteomic gene expression analyses sensitive distinguishing subtle toxicity differences associated silica particles varying physical properties compared traditional cytotoxicity endpoints copyright majesty queen right canada journal applied toxicology published john wiley sons ltd
background antiviral therapy chronic hepatitis virus hbv infection pursues dual goals virological response undetectable serum hbv dna hepatitis antigen hbeag serological response serum hbeag loss seroconversion relatively difficult however realize serological response especially nucleotide nucleoside analogs furin proprotein convertase involved hbeag maturation suppression furin using inhibitors accordingly reduces hbeag secretion possibly enhances hbv replication reasons strategy based combination nucleoside analog entecavir etv furin inhibitors inhibit hbv replication hbeag secretion simultaneously studied methods suppression furin performed using inhibitors decanoyl rvkr chloromethylketone cmk hexa arginine expression furin inhibitory prosegment influence furin suppression hbv replication effect cmk combined nucleoside analog entecavir etv hbv replication hbeag secretion investigated hepg cells hbeag level media detected using enzyme linked immunosorbent assay intracellular viral antigens hbv dna detected using western southern blotting analyses respectively results cmk expression inhibitory prosegment significantly reduced hbeag secretion cmk enhance hbv replication concordantly cmk post transcriptionally accumulated cytosolic hbv replication essential hepatitis core antigen hbcag hbcag accumulating effect cmk found resulted redundant inhibitory effect trypsin like activity cellular proteasomes responsible hbcag degradation moreover viral replication enhancing effect cmk abrogated etv etv combined cmk reduced hbv replication hbeag secretion simultaneously conclusion suppression furin enhance hbv replication nucleotide nucleoside analogs combined furin inhibitors may potential easy way realize dual goals antiviral therapy chronic hepatitis future
astaxanthin high value ketocarotenoid used pharmaceutical nutraceutical industries mainly produced green alga haematococcus pluvialis biosynthesized action key enzyme beta carotene ketolase bkt beta carotene intermediates echinenone canthaxanthin study beta carotene ketolase bkt gene isolated pluvialis cloned vector prt mobilized binary vector pcambia dna pcambia consists cloned bkt successfully transformed pluvialis agrobacterium mediation cloning transformation bkt pluvialis confirmed southern blotting also pcr analysis total carotenoids astaxanthin content transformed cells found foldhigher intermediates like echinenone canthaxanthin found fold higher control cells expression level carotenogenic genes like phytoene synthase psy phytoene desaturase pds lycopene cyclase lcy bkt beta carotene hydroxylase bkh found higher transformed cells compared non transformed pluvialis elsevier rights reserved
family study provide estimates overall genetic influences particular trait family relationships provide accurate measures average genetic sharing however evidence genetic contributions skin phenotypes limited may preclude genetic studies identify genetic variants understand underlying molecular biology skin traits study aimed estimate genetic environmental contributions selected dermatologic phenotypes melanin index sebum secretion skin humidity level korean twin family cohort investigated individuals families including monozygotic twin pairs dizygotic twin pairs variance component method used estimate genetic influences terms heritability heritability skin melanin index sebum secretion skin humidity arm cheek estimated respectively adjusting confounding factors findings suggest genetics play major role skin melanin index mild roles sebum secretion humidity sebum secretion skin humidity controlled predominantly environmental factors notably shared environments among family members expect findings add insight determinants common dermatologic traits serve reference biologic studies
accuracy water models derived initio molecular dynamics simulations means improved force matching scheme assessed various thermodynamic transport structural properties found although resulting force matched water models typically less accurate fully empirical force fields predicting thermodynamic properties nevertheless much accurate generally appreciated reproducing structure liquid water fact superseding commonly used empirical water models development demonstrates feasibility routinely parametrize computationally efficient yet predictive potential energy functions based accurate initio molecular dynamics simulations large variety different systems wiley periodicals inc
mimosine natural plant amino acid present leucaena genus able induce hypoxia inducible factors hifs previous evidence indicated hif regulates angiogenesis osteogenesis coupling bone metabolism previously reported mimosine inhibits prostaglandin alpha induced osteoprotegerin opg synthesis without affecting interleukin production osteoblast like mct cells addition pge demonstrated induce opg synthesis via activation mitogen activated protein map kinase stress activated protein kinase jun terminal kinase sapk jnk cells pge stimulates production via activation protein kinase present study effects mimosine pge stimulated synthesis opg investigated osteoblast like mct cells concentrations opg measured using relevant elisa kits opg mrna measured semi quantitative reverse transcription polymerase chain reaction phosphorylation map kinase sapk jnk analyzed western blotting mimosine significantly reduced pge induced release opg opg mrna expression levels without affecting release addition deferoxamine also normoxic hif inducer significantly inhibited pge induced opg release opg mrna expression levels however little effect release furthermore mimosine deferoxamine failed affect pge stimulated phosphorylation map kinase sapk jnk results strongly suggest normoxic hif inducers attenuate pge stimulated opg synthesis without affecting production osteoblasts
extracted total phenols flavanols flavonoids measured beer samples quality antioxidants measured two modified antioxidant methods azinobis ethylbenzothiazoline sulfonate radical cation abts center dot beta carotene linoleate model system beta carotene found antioxidant potential beer well correlated flavanols flavonoids slightly lower total polyphenols values forty two male non drinkers hypercholesterolaemic volunteers ages coronary bypass surgery randomly divided experimental control groups participants antiatherosclerotic diet group supplemented consecutive days beer per day could short term beer consumption affect risk factors coronary atherosclerosis also markers process plasma albumin antioxidant activity goal total cholesterol low density lipoprotein cholesterol high density lipoprotein cholesterol triglycerides plasma albumin fibrinogen antioxidant activity determined trial significant improvement plasma lipid levels increase plasma antioxidant anticoagulant activities patients group registered parallel increase plasma albumin concentration antioxidant activity observed conclusion short term beer consumption basis bioactivity beverage positively affects plasma lipid levels plasma antioxidant anticoagulant activities increase plasma albumin concentration antioxidant activity could markers atherosclerosis status
tragic west african ebola epidemic claimed many lives would worse still scientific insights many disciplines integrated create strong technical response epidemiology modelling triggered international response guided response efforts directed virology engineering clinical science helped reduce deaths transmission hospitals treatment centres social sciences key reducing deaths funerals community diagnostic operational research made response efficient immunology vaccine research contributed final stages epidemic help prevent future epidemics varied scientific contributions integrated combined narrative communicated policymakers inform decisions used courageous local international responders field real time every area science optimal particular clinical trials simple interventions fluid management slow adopted sharing data initially poor ebola epidemic demonstrated science respond major emergency also lessons better responses future infectious emergencies article part themed issue west african ebola epidemic data decision making disease control
phytoplasmas insect vectored bacteria cause disease wide range plant species increasing availability molecular dna analyses expertise additional methods recent years led proliferation discoveries phytoplasma plant host associations numbers taxonomic groupings phytoplasmas widespread use common names based diseases associated well separate phenetic taxonomic systems classifying phytoplasmas based variation rrna encoding gene complicates interpretation literature explore issue related trends focus australian pathosystems providing first comprehensive compilation information continent covering phytoplasmas host plants vectors diseases groups reported internationally groups iii xii recorded australia highlights need ongoing biosecurity measures prevent introduction additional pathogen groups many phytoplasmas reported australia sufficiently well studied assign groups likely unrecognized groups sub groups present wide host plant ranges apparent among well studied phytoplasmas multiple crop non crop species infected disease management complicated fact putative vectors identified phytoplasmas especially australia despite rapid progress recent years using molecular approaches phytoplasmas remain least well studied group plant pathogens making crouching tiger disease threat
background copy number variation cnv known play important role genetics complex diseases several methods proposed detect association cnv phenotypes interest statistical methods cnv association analysis categorized two different strategies first copy number estimated maximum likelihood association expected copy number phenotype tested second observed probe intensity measurements directly used detect association cnv phenotypes interest results strategy provide statistic applied extended families computational efficiency proposed methods enables genome wide association analysis show simulation studies proposed methods outperform existing approaches particular found first strategy always efficient second strategy matter whether copy numbers individual well identified proposed methods performed genome wide cnv association analyses hematological trait hematocrit korean family samples conclusions found statistical analysis expected copy number powerful statistic probe intensity measurements regardless accuracy estimation copy numbers
membrane transporters enable efficient cellular metabolism aid nutrient sensing associated various diseases obesity cancer genome scale metabolic network reconstructions capture genomic physiological biochemical knowledge target organism along detailed representation cellular metabolite transport mechanisms since first reconstruction human metabolism recon published progress made field metabolite transport recently published updated reconstruction recon significantly improved metabolic coverage functionality human metabolic reconstructions used investigate role metabolism disease predict biomarkers drug targets given importance cellular transport systems understanding human metabolism health disease analyzed coverage transport systems various metabolite classes recon review current knowledge transporters preferred substrates transport mechanisms metabolic relevance disease association metabolite class assess missing coverage propose modifications additions transport module functional combined recon information valuable refinements data also provide starting points experiments highlighting areas incomplete knowledge review represents first comprehensive overview transporters involved central metabolism transport mechanisms thus serving compendium metabolite transporters specific human metabolic reconstructions
binding protein fbbp belongs family fkbps altered expression fkbps observed several malignancies present study aimed explore expression biological function fkbp gastric cancer fkbp expression levels gastric cancer samples matched control samples evaluated using quantitative polymerase chain reaction cell proliferation evaluated using cell counting kit assay cell adhesion transwell assay performed detect cell adhesion invasion protein expression determined using western blot analysis found fkbp expression gastric cancer tissues elevated compared normal tissues silencing fkbp expression gastric cancer mkn ags cell lines higher expression level fkbp compared four gastric cancer cell lines significantly inhibited cellular proliferation adhesion invasion addition protein levels proliferating cell nuclear antigen matrix metalloproteinase epithelial mesenchymal transition emt markers beta catenin snail twist repressed gastric cancer cells fkbp silenced conclusion fkbp may act oncogene suppressing cellular proliferation adhesion invasion emt gastric carcinogenesis fkbp may diagnosis marker potential therapeutic target gastric cancer
background science drug metabolism pharmacokinetics dmpk plays critical role supporting selection potent selective leads retain appropriate physicochemical properties ensure distribution site administration tissue target interest historically discovery dmpk bridged gap disciplines biology medicinal chemistry thereby ensuring clinical focus discovery early development phases objective discuss fundamentals dmpk screening drug discovery historical perspective highlighting dmpk part improving chances success novel drug candidates suggesting new exciting areas future development conclusions broad remit resulted development wide variety assays vitro vivo focused assessing developability risks associated molecule progression clinical development likely bioavailability humans potential drug drug interactions human metabolism interactions transporters potential metabolism mediated idiosyncratic toxicity arguably dmpk already adopted many concepts interest translational medicine quantitative pharmacology scientific regulatory pressures continue drive subject towards better integrated approaches systems thinking
despite remarkable advances knowledge molecular biology treatment ovarian cancer first cause death due gynecological cancer fifth cause death cancer women spain aim guideline summarize current evidence give evidence based recommendations clinical practice
objectives besides group streptococcus gas microbial causes pharyngitis children well known aimed document viral bacterial aetiology pharyngitis assess pathogenic role viruses determining myxovirus resistance protein mxa blood marker interferon response methods prospective observational study throat swabs blood samples collected children age years presenting emergency department febrile pharyngitis microbial cause sought bacterial culture polymerase chain reaction serology blood mxa level determined results potential pathogen detected patients gas alone gas viruses group streptococci alone together viruses viruses alone cases enteroviruses rhinoviruses adenoviruses frequently detected viruses blood mxa levels higher children viral median iqr concomitant gas viral sole gas infections conclusions detection respiratory viruses simultaneously elevated blood mxa levels supports causative role viruses majority children pharyngitis british infection association published elsevier ltd rights reserved
background taxonomic status brown dog tick rhipicephalus sanguineus sensu stricto subject ongoing debate consensus populations tick species referred sanguineus sensu lato taxonomic status resolved recent genetic studies revealed existence one lineage sanguineus temperate countries study assessed genetic identity ticks collected rural dogs living several areas located major geographical regions portugal methods total ticks collected rural dogs living different regions portugal ticks morphologically identified partial mitochondrial rrna gene sequences similar obtained representative specimens results ticks morphologically identified ixodes ricinus seven males females rhipicephalus bursa one male rhipicephalus pusillus one female sanguineus two larvae nymphs males females partial mitochondrial rrna gene sequences obtained sanguineus specimens genetically identified belonging called temperate lineage sanguineus conclusions results strongly suggest temperate species sanguineus representative tick group found dogs portugal also adds weight hypothesis rhipicephalus turanicus present country although investigations necessary confirm
agrobacterium tumefaciens strains differ ability transform tomato micro tom also number transgene copies strains integrate genome transformation efficiency tomato solanum lycopersicum micro tom agrobacterium tumefaciens strains agl eha harboring plasmid pbi compared presence nptii uida transgenes regenerated plants determined pcr southern blotting gus histochemical analyses addition rapid reliable duplex qpcr taqman assay standardized estimate transgene copy number highest transformation rate obtained agrobacterium strain followed eha agl mortality rate cotyledons due agrobacterium overgrowth lowest strain agrobacterium strain eha efficient transfer single dna insertions nptii uida transgenes tomato genome even though agrobacterium strain lowest transformation rate qpcr analysis showed strain efficient transfer single transgene insertions none transgenic plants produced strain two insertion events genome combination higher transformation efficiency fewer transgene insertions plants transformed using eha makes agrobacterium strain optimal functional genomics biotechnological applications tomato
background blaz gene encoding penicillin resistance located either chromosomally plasmids aim study investigate genetic relationships determine location blaz gene aureus isolated bovine mastitis finland sweden methods seventy eight beta lactamase positive aureus isolates bovine mastitis finland sweden included study localization blaz gene determined southern blotting blaz genes isolates sequenced sequences translated beta lactamase proteins grouped different protein signatures isolates control swedish finnish beta lactamase negative isolates typed pulsed field gel electrophoresis pfge results finnish isolates swedish isolates blaz gene localized plasmid six different protein signatures found one signature found four swedish isolates signatures found finnish swedish isolates pfge results revealed diversity aureus clones protein signatures clearly associated certain pulsotypes conclusions plasmid location blaz gene statistically significantly common finland sweden hence explain higher proportion penicillin resistant isolates aureus causing bovine mastitis finland compared sweden
hydroxy isopropyl dimethyl hexahydronaphthalen one hho allelopathic substance related allelochemical metabolism eupatorium adenophorum study full length complementary dna two phenylalanine ammonia lyase pal genes fragment cinnamate hydroxylase cah gene adenophorum cloned expression three genes increased hho treatment varying sensitivity eapal eapal eacah southern blotting suggested third member pal gene family species
confronted brain metastases pathologists aim rule primary central nervous system cns tumor identify verify primary tumor site guide clinician specific therapies apart morphological features ancillary immunohistochemical analysis effective tool characterizing metastatic neoplasm unknown origin limited array antibodies used taking account relevant clinical information known brain tropism lung cancer breast cancer melanoma recently targeted therapies enriched therapeutic arsenal particular patients non small cell lung cancer melanoma patients carrying molecular anomalies therapies lead substantial tumor response brain metastases included justifies rapid determination molecular profile combine different tools provide timely results good tumor sample management careful attention pre analytical phase critical appropriate strategies molecular immunohistochemical analysis needed identify theranostic markers article aims review anatomopathological diagnostic approach age targeted therapies
cryea bacillus thuringiensis strain insecticidal activity holotrichia parallela cryca strain hbf effective anomala corpulenta cryga strain hbf toxic oblita given need broaden spectrum thuringiensis broad spectrum coleopteran active strain thuringiensis biot engineered express multiple cry genes including cryea cryfa cryca created homologous recombination introducing cryca thuringiensis strain liu appl microbiol biotechnol broaden spectrum engineered thuringiensis strain biotg constructed introducing recombinant plasmid pstk containing cryga engineered thuringiensis strain biot pcr southern blotting demonstrated cryga gene transferred novel strain biotg sds page pcr confirmed normal expression transcription cryga gene addition cryea cryfa cryca genes bioassays biotg indicated recombinant strain broadened spectrum parallela susceptible crye protein corpulenta susceptible cryc protein also oblita susceptible cryg protein pesticide could also decrease cost production field labor
radical adenosyl methionine enzyme desii streptomyces venezuelae able oxidize hydroxyl group tdp quinovose corresponding ketone via alpha hydroxyalkyl radical intermediate unknown whether electron transfer radical intermediate precedes follows deprotonation answering question would offer considerable insight mechanism small important class radical mediated alcohol dehydrogenases operate question addressed measuring steady state kinetic isotope effects kies however interpretation obfuscated degree steps interest limit catalysis circumvent problem measured solvent deuterium kie saturating steady state concentration radical intermediate using electron paramagnetic resonance spectroscopy resulting value combined solvent deuterium kie maximum rate turnover yielded kie net rate constant specifically associated alpha hydroxyalkyl radical intermediate result implies electron transfer radical intermediate precede deprotonation analysis isotope effects along dependence steady state kinetic parameters likewise suggests desii must correct protonation state initial generation alpha hydroxyalkyl radical addition providing unique mechanistic insights work introduces unique approach investigating enzymatic reactions using kies
advances molecular biology biochemistry provided tools explore increase understanding mediators regulate development pathological changes pulmonary circulation combinations techniques allowed researchers start unravel complex biological pathways direct relevance pulmonary research contribute cellular proliferation vascular permeability aim chapter describe established protocols quantify dna rna protein expression discuss advances techniques illustrate applied expression levels cell signaling components detected level dna rna protein southern blotting also termed southern hybridization named edwin southern developed technique allows detection specific dna sequence preparation dna typically cellular nuclei method modified extended later detection rna protein named northern western blots respectively three protocols based similar principles utilize similar methods alternatively measurement gene expression using messenger rna mrna starting material generation complementary dna cdna also performed via reverse transcription polymerase chain reaction pcr followed agarose gel electrophoresis modification technique real time pcr also termed quantitative pcr allows quantitative analysis gene copy number number high throughput techniques exist profiling gene protein expression use dna protein microarrays however discussed detail subsequent sections many variations exist protocols outlined buffers made using variety recipes purchased number suppliers however principles remain understanding stages process purpose key chapter outlines methods proven versatile reliable sensitive
backgroundthe aavs locus viewed safe harbor transgene insertion human genome present study report new method aavs targeting human induced pluripotent stem cells hipscs methodswe developed two baculoviral transduction systems one deliver zinc finger nuclease zfn dna donor template site specific gene insertion another mediate cre recombinase mediated cassette exchange system replace inserted transgene new transgene resultsour zfn system provided targeted integration efficiency neo egfp cassette selected stable hipsc colonies southern blotting analysis aasv targeted colonies revealed random integration events among colonies examined mono biallelic aasv targeting biallelically modified selected hipscs displayed persistent enhanced green fluorescent protein expression continued expression stem cell pluripotency markers hipscs maintained ability differentiate three germ lineages derived embryoid bodies transgene expression retained differentiated cells pre including loxp docking sites neo egfp cassette demonstrated baculovirus cre loxp system could used facilitate replacement neo egfp cassette another transgene cassette aavs locus conclusionsgiven high targeting efficiency stability expression inserted transgene flexibility transgene exchange approach reported present study holds potential generating genetically modified human pluripotent stem cells suitable developmental biology research drug development regenerative medicine gene therapy copyright john wiley sons ltd
rna interference strategies offer alternative small molecular drug targeting small interfering rna sirna constitutes class molecules allows effective specific inhibition biosynthesis protein indeed sirna emerged major tool molecular biology techniques important approach identify suitable therapy targets cancer however sirna therapy approaches vivo scarce two major problems hinder sirna therapeutic tool delivery bloodstream leads degradation rapid renal clearance stabilization specific uptake desired cell type specificity review summarizes ongoing attempts use rnai disease causing factors compare methods stabilize sirna different conjugates decorate complexes targeting molecules antibodies single chain fab fragments enable specific uptake carriers respective cells propose development antibody coupled sirna complexes shown allow stabilization well targeted uptake sirna cancer cells
major developments cryo electron microscopy past three four years led solution number spliceosome structures high resolution fully assembled yet active spliceosome bact spliceosome first step splicing spliceosome activated second step therefore years genetics biochemistry spliceosome interpreted structural level closely examined rnase domain prp structures interestingly rnase domain different unexpected roles catalytic steps splicing
cephalosporins widely used anti infectious beta lactam antibiotics clinic purpose increasing yield cephalosporin cpc fermentation especially industrial strain chrysogenum genes cefef cefg encode ultimate penultimate steps cpc biosynthesis ceft encodes cpc efflux pump vgb encodes bacterial hemoglobin gene transformed various combinations industrial strain chrysogenum pcr southern blotting indicated introduced genes integrated chromosome chrysogenum carbon monoxide difference spectrum absorbance assay performed result showed vitreoscilla hemoglobin successfully expressed chrysogenum biological activity hplc analysis fermentation broth recombinant chrysogenum showed transformants higher cpc production level parental strain multiple transformants containing additional copy cefg showed significant increase cpc production however ceft showed little effect cpc production high producer highest improvement cpc titer observed mutant extra copy cefg cefef vgb whose cpc production increased first report three genes introduced simultaneously chrysogenum results also demonstrated combination genes synergy effect cpc high producer
crambe abyssinica dedicated oilseed crop suitable production industrial feedstocks genetic modification crambe progressed substantially last years transformation efficiency needs improved meanwhile developing reliable molecular system including southern blot qrt pcr analyses desired effectively evaluating transgenic lines gene expression levels endogenous transgenes study developed efficient transformation protocol hygromycin selective agent crambe transformation regeneration test addition hygromycin concentration resulted shoot regeneration using crambe hypocotyls explants regeneration occurred hygromycin concentration reached based result hygromycin concentration used subsequent transformations results showed transformation efficiency constant low selection pressure similar higher selection pressure first followed transfer lower selection pressure pcb southern blot fatty acid composition analyses confirmed integration transgenes crambe genome also optimized southern qrt pcr methods future studies crambe related species southern blot analysis crambe dna required clear band choice enzymes dna digestion rigid confirmation dna integration determining copy number transgenes suitable enzymes chosen increasing enzyme concentration could improve digestion enzyme recomended complete digestion crambe dna qrt pcr analysis around days flowering observed suitable sampling time expresseion analysis genes invovled seed oil biosynthesis
studying genetic structure vicariant species closely related species occupy ecologically distinct yet adjacent habitats shed light evolution divergence species different ecological requirements previous phylogeographic study identified chloroplast dna haplotype sharing two vicariant tree species one forest hymenaea courbaril one savanna stigonocarpa habitats species occur brazilian cerrado biome encompasses forest patches riverine forests within savanna matrix order investigate evolutionary processes involved genetic divergence trees used nuclear microsatellite markers statistical methods including approximate bayesian computation abc leaf morphology analyze neighboring distant populations bayesian analysis revealed admixture species abc analysis supported scenarios occurrence gene flow species last glacial maximum holocene present compared alternative scenarios gene flow constant gene flow since divergence however putative hybrids exhibit intermediate leaflet morphology could related distinct selective pressures maintaining species integrity even face gene flow results suggest despite morphological differences savanna forest species interspecific barriers gene flow might fully developed vicariant tree species interspecific hybridization trees cerrado biome may underdiagnosed process
background panicum hallii vasey panicgrass compact perennial grass family poaceae potential enable bioenergy research switchgrass panicum virgatum unlike hallii switchgrass large genome allopolyploidy self incompatibility long life cycle large stature suboptimal traits rapid genetics research herein improved tissue culture methodologies two inbred hallii populations fil hal enable development hallii model plant results optimal seed derived callus induction medium determined murashige skoog medium supplemented cysteine proline sucrose casein hydrolysate dichlorophenoxyacetic acid benzylaminopurine bap resulted callus induction fil hal optimal inflorescence derived callus induction observed medium medium supplemented proline maltose bap resulting callus induction fil hal shoot regeneration rates shoots gram fil shoots gram hal achieved using seed induced callus whereas shoot regeneration rates shoots gram fil shoots gram hal achieved inflorescence induced callus cell suspension cultures hallii established seed derived callus providing faster generation callus tissue compared culture using solidified media fold increase fil fold increase hal conclusions aside abbreviated tissue culture times callus induction plant regeneration hal noted apparent differences fil hal populations tissue culture performance populations cell suspension cultures outperformed tissue cultures solidified media using methods developed work hallii callus induced seeds immediately harvest shorter time higher frequencies switchgrass clonal propagation hallii callus established inflorescences similar switchgrass strengthens potential plant model genetic studies rapid cycling seed seed time ease culture demonstrate potential utility hallii model plant
chilli important commercial crop recalcitrant vitro regeneration present study attempt made optimize vitro regeneration two chilli local cultivars viz lca transform transcription factor dreba control desiccation inducible promoter rda known impart desiccation tolerance using binary vector pcambia different phytohormones concentrations medium evaluated vitro response zeatin phenyl acetic acid paa supported highest regeneration rate among explants cotyledonary leaf exhibited higher regeneration response compared hypocotyls genotype better regeneration rate compared lca rooting shoots highest medium indole butyric acid iba compared hormones presence transgene confirmed polymerase chain reaction pcr southern blotting acclimatized transformants grown pots screened drought tolerance transformants showed improved tolerance drought lower wilting compared control plants transformation regeneration protocol described present study may help optimization transformation chilli agronomic traits interest
conducted prospective study assess prognostic impact selected copy number variations cnvs stage iii microsatellite stable mss colon cancer total patients included cnvs selected target genes dcc egfr blk myc apc erbb stk detected using quantitative multiplex polymerase chain reaction short fluorescent fragment qmpsf method primary end point impact cnvs year disease free survival dfs recurrence rate years corresponding stage patients versus stage iii patients year dfs significantly decreased patients loss dcc gain erbb multivariate analysis demonstrated stage iii loss dcc gain erbb independent factors associated dfs combination dcc erbb also associated relapse hazard ratio increasing confidence interval presence alterations respectively cnvs dcc erbb significantly associated dfs stage iii mss colon cancer
purinergic receptor represents atp gated ionotropic receptor selective localization alveolar epithelial type cells lung despite involvement receptor inflammatory processes lung established whether receptor plays specific role alveolar epithelial cell biology evidence receptor influences wnt beta catenin signalling pathways alveolar epithelial cells conditions injury investigated expression gsk beta potent protein kinase involved alveolar epithelial barrier functions tight junction molecules occludin claudin claudin wild type mice western blot analysis immunohistochemistry quantitative real time pcr revealed remarkable increase claudin mrna protein lungs mice animals furthermore alveolar epithelial cells animals showed decreased levels gsk beta protein inactive form gsk beta conversely claudin knockout mice exhibited decreased mrna transcript abundance measured mrna expression microarray quantitative pcr data consistent hypothesis pxr contributes alveolar epithelial barrier function effects gsk beta furthermore data suggest potential reciprocal regulation claudin pxr alveolar epithelium
objective objective study determine contribution lymphatic tissue heterotopic ossification background pathologic development ectopic bone within soft tissues often following severe trauma characterization tissue niche supporting critical identifying therapies directed condition lymphangiogenesis upregulated incidents trauma thereby coincident niche supportive hypothesized lymphatic tissues play critical role formation methods mice underwent hindlimb achilles tendon transection dorsal burn injury burn tenotomy induce popliteal inguinal lymph nodes excised ipsilateral tenotomy site flow cytometry immunostaining used quantify localize lymphoendothelium microct used quantify results enrichment mature lymphatic tissues noted weeks injury tendon transection sites compared contralateral intact tendon based lyve tubules excision inguinal popliteal nodes draining popliteal lymphatic vessel significantly decreased presence mature lymphoendothelium weeks injury bone cartilage stromal progenitor cells alphav tie also significantly decreased lymph node excision significant decrease noted volume novo hopresent within soft tissues conclusion findings suggest lymphatic vessels intimately linked novo formation bone within soft tissues following trauma presence may facilitate bone formation
tumor metastasis multistep process involving number genetic alterations genetic diagnosis got increasingly attentions today aim study use rna seq screen effective differential expression genes peripheral blood mononuclear cells hepatic carcinoma metastasis results showed hepatic carcinoma samples gathered according different metastasis ccl ccll jun ilb identified inflammation mediated chemokine cytokine signaling pathway hepatic carcinoma samples metastasis subsequently confirmed quantitative real time polymerase chain reaction conclusions ccl ccll jun ilb potential considered candidates future molecular diagnosis hepatic carcinoma metastasis work may provide new visions metastasis process potential efficient clinical diagnosis future
nervous necrosis virus nnv one prevalent fish pathogens caused fatal disease viral nervous necrosis vnn many marine freshwater fishes resulted heavy economic losses aquaculture industry worldwide however morecular mechanisms underlying pathogenicity nnv remain elusive study expression profiles microrna mirna investigated grouper fin cells infected red spotted grouper nervous necrosis virus rgnnv via deep sequencing technique results showed total mirnas identified aligning small rna sequences mirna database zebrafish novel mirnas predicted using mirdeep software compared non infected groups differentially expressed mirnas mirnas identified samples infected rgnnv respectively six demirnas randomly selected validate expressions using quantitative reverse transcription polymerase chain reaction qrt pcr results showed expression profiles consistent obtained deep sequencing target genes mirnas covered wide range functions regulation transcription oxidation reduction process proteolysis regulation apoptotic process immune response addition effects four mirnas including mir mir mir mir rgnnv replication evaluated results showed expression four mirnas promoted replication rgnnv data provide insight molecular mechanism rgnnv infection benefit development effective strategies control rgnnv infection elsevier ltd rights reserved
prostate cancer pca become second leading cause male cancer related mortality united states mesenchymal stem cells mscs able migrate tumor tissues thus considered novel antitumor carriers however due immunosuppressive nature application mscs pca therapy remains limited study investigated effect mscs overexpressing nad dependent deacetylase sirtuin mscs sirt prostate tumor growth analyzed underlying mechanisms results show mscs accelerate prostate tumor growth whereas mscs sirt significantly suppresses tumor growth natural killer cells macrophages prominent antitumor effectors mscs sirt induced antitumor activity ifn gamma motif chemokine ligand cxcl highly expressed mscs sirt mice antitumor effect mscs sirt weakened cxcl ifn gamma inhibited results show mscs sirt effectively inhibit prostate cancer growth recruiting cells macrophages tumor inflammatory microenvironment
expression glut glucose transporter type isoform gene adipocytes subject hormonal metabolic control present study characterized adipose tissue transcription factor influenced fasting refeeding regimens insulin northern blotting showed refeeding increased glut mrna levels adipose tissue consistent increased glut gene expression mrna levels srebp sterol regulatory element binding protein adipose tissue also increased refeeding streptozotocin induced diabetic rats insulin treatment increased mrna levels glut adipose tissue serial deletion luciferase reporter assays electrophoretic mobility shift assay studies indicated putative sterol response element located region bases human glut promoter transduction srebp dominant negative form differentiated adipocytes caused reduction mrna levels glut suggesting srebp mediates transcription glut vivo chromatin immunoprecipitation revealed refeeding increased binding srebp putative sterol response element glut furthermore treating streptozotocin induced diabetic rats insulin restored srebp binding addition identified binding site adjacent functional sterol response element glut promoter site appears play additive role srebp mediated glut gene upregulation results suggest upregulation glut gene transcription might directly mediated srebp adipose tissue
extant south asian histories race specifically biometrics focus almost exclusively upon colonial era especially nineteenth century yet increasing number ethnographic accounts observe indian scientists enthusiastically embraced resurgent raciology engendered genomic research human variation sorely lacking historical account raciology fared late colonial early postcolonial periods roughly period decline craniometry rise genomics history explore article argue anthropometry far purely colonial science adopted indian nationalists quite early various distinctive shades biometric nationalism publicly competed onward counter sense biometric nationalism teleologically inevitable contrast radical alternative called craftology emerged margins formal academia amongst scholars practicing call vernacular anthropology craftology biometric nationalism continued compete contrast selectively entangle almost end twentieth century
among microsporidia nosema bombycis novel arrangement lsurrna ssurrna igs srrna determine distribution rdna among chromosomes performed genome wide screening southern blotting three probes ssu igs southern blotting revealed ribosomal rna genes distributed chromosomes bombycis contrary previous result concluded bombycis rrna genes limited single chromosome wide distribution similar rdna unit encephalitozoon cuniculi screening bombycis genome detected lsurrna elements ssurrna elements srrna elements however still difficult determine loci chromosomes genomic map unfinished elsevier inc rights reserved
foxol plays important role integration hormone activated signaling pathways complex transcriptional cascade promotes preadipocyte differentiation clonal cell lines rodents isolated full length cdna porcine foxo gene using race confirmed visual northern blotting deduced amino acids indicated identities corresponding human mice analysis sequence showed included forkhead domain transmembrane structure domain lxxll motif ser thr tyr phosphorylation sites indicating potential important role foxo transcriptional activity vivo using imprh panel mapped foxo gene chromosome data provide basic molecular information useful investigation function foxo gene time course analysis foxo expressions indicated levels mrna protein gradually increased day reached almost maximal level day decreased day porcine primary preadipocyte differentiation induction igf gpdh activity accumulation lipid increased however expressions foxo mrna protein inhibited dose dependent manner results suggest foxo takes part porcine preadipocyte differentiation expressions foxo regulated igf
virtually nothing known glucocorticoid receptor mineralocorticoid receptor gene expression avian species report cloning partial cdnas chicken partial cdnas used probes characterize expression mrna identify full length transcripts within chicken genome chicken sequences predicted genome sequence compared representatives vertebrate classes genes located chicken chromosomes respectively northern blotting reverse transcription polymerase chain reaction pcr results indicate widely expressed many tissues characterization mrna levels anterior pituitary gland chick embryonic development quantitative real time pcr demonstrates decreased increased gene expression embryonic days plasma levels corticosteroids increased period first study gene expression avian species first analysis changes pituitary gene expression embryonic development species elsevier inc rights reserved
objective study mrna expression two leucine rich repeat containing protein coupled receptors lgr lgr mrna protein expression lgr relaxin receptor human cyclic endometrium design retrospective study setting department anatomy reproductive biology rheinisch westfalische technische hochschule aachen aachen germany method lgr mrna expression assessed semiquantitative real time reverse transcription polymerase chain reaction endometrium premenopausal women cultured primary endometrial epithelial cells fibroblasts transcript size determined northern blotting lgr protein expression assessed immunohistochemistry result mrna lgr lgr lgr expressed constitutively throughout menstrual cycle endometrium characterized substantial differences expression levels individual women lgr immunostaining detected epithelium functional layer throughout cycle lowest staining midproliferative phase furthermore individual stromal cells functional layer stroma basal layer showed lgr immunostaining conclusion endometrial expression mrna orphan receptors lgr lgr implies endometrium potentially influenced yet unknown mediators possibly involved fertility control furthermore confirmed constitutive endometrial mrna expression lgr classical relaxin receptor demonstrated specific lgr immunostaining different endometrial cell types suggests physiological role relaxin human endometrium
osmoprimed seeds increased abundance pglct proteins osmopriming together heat shock increased abundance rbr proteins nad increased osmoprimed heat shocked seeds imbibed low temperature purpose seed priming accelerate synchronize germination increase stress tolerance activation genes function seeds exposed unfavorable conditions objectives study evaluate effects osmopriming heat shock treatment germination eucalyptus urophylla seeds different temperatures analyze seed proteome elucidate mechanisms tolerance thermal stress primed unprimed seeds untreated control seeds osmoprimed polyethylene glycol days redried seeds osmoprimed heat shocked degrees redried seeds germinated days constant light fluorescent daylight tubes degrees osmopriming without heat shock led significant increase germination percentage degrees induced highest germination speed index degrees according proteomic analysis osmoprimed seeds exhibited increased abundance several proteins including sugar transport proteins may influenced metabolic rate germination osmopriming together heat shock treatment increased abundance proteins associated regulation cell cycle suggesting proteins may involved protection thermal stress krebs cycle enzyme increased osmoprimed heat shocked seeds imbibed low temperature possibly signifying increased synthesis adenosine triphosphate results reported herein serve explain benefits osmopriming heat shock treatment
demands tissue engineering driven tremendous amount research effort tissue culture technology recently printing need use tissue culture techniques broadly cell biology well recognized transition impeded convenience effectiveness ubiquity culture materials assays protocols well lack counterparts tools interestingly progress discoveries bioprinting research may provide technical support needed grow practice culture investigate integrated approach printing multicellular structures using platform cell culture experimentation assay development employ liquid like solid lls material made packed granular scale microgels locally temporarily fluidizes focused application stress spontaneously solidifies applied stress removed rheological properties enable printing multicellular structures well growth expansion cellular structures dispersed cells transport properties lls allow molecular diffusion delivery nutrients small molecules fluorescence based assays measure viability different cell types lls medium print numerous structures using several cell types explore transport properties molecular time release assays
article presents microfluidic approach integration process aptamer selection via systematic evolution ligands exponential enrichment selex approach employs bead based biochemical reactions affinity selected target binding oligonucleotides electrokinetically transferred amplification amplification product transferred back affinity selection via pressure driven fluid flow hybrid approach simplifies device design operation procedures reduced pressure driven flow control requirements avoids potentially deleterious exposure targets electric fields prior affinity selection addition bead based reactions used achieve chip coupling affinity selection amplification target binding oligonucleotides thereby realizing chip loop closure integration entire selex process without requiring offline procedures microfluidic approach thus capable closed loop multiround aptamer enrichment demonstrated selection dna aptamers protein immunoglobulin high affinity rapid manner rounds approximately
avian paramyxoviruses apmvs reported wide variety avian species around world avian paramyxoviruses economically significant huge mortality morbidity associated twelve different serotypes apmv reported till date avian paramyxoviruses belong family paramyxoviridae genus avulavirus newcastle disease virus apmv characterized members among apmv serotypes complete genome sequence twelve apmv serotypes published recently recent years apmv attracted virologists oncolytic activity use vaccine vector animals humans recombinant apmv based vaccine offers pertinent choice construction live attenuated vaccine due minimum recombination frequency modular nature transcription lack dna phase replication although insufficient data available regarding apmv serotypes understanding apmv biology expanding rapidly availability modern molecular biology tools high throughput complete genome sequencing
knowledge putative insect species vectors coconut lethal yellowing disease clyd mozambique crucial develop effective disease management plan hemiptera specimens families derbidae pentatomidae collected inhambane zambezia provinces coastal region mozambique covering two main growing seasons sequence analyses rrna gene used phytoplasma clustering polymerase chain reaction pcr amplification performed employing three different primer sets specific phytoplasma blast sequence comparison phylogenetic analysis rdna pcr products revealed collected specimens derbidae diostrombus mkurangai wilson carrying clyd phytoplasma virtual rflp analyses obtained sequences confirmed assigning detected phytoplasmas srxx subgroup confirming candidatus phytoplasma palmicola related strains first detection candidatus phytoplasma palmicola related strain mkurangai
important forage crops gramineous forage plants also play role improving natural environment maintaining water soil erosion turfgrass plants together using particle bombardment transformation system nicotianamine synthase gene introduced callus lolium perenne twenty transgenic ryegrass lines obtained pieces resistant calli giving transformation frequency pcr southern blotting analysis showed target gene integrated genome transgenic plants transgenic plants displayed excellent drought resistant expression nashor gene field aridity experiment chlorophyll content leaves transgenic plant higher controls normal condition observation infield experiment identified resistance transgenic plants underway
sphingolipids essential components eukaryotic cells important functions membrane biology cellular signaling levels tightly controlled coordinated abundance membrane lipids sphingolipid homeostasis achieved yet well understood studies performed primarily yeast showed phosphorylation states several enzymes regulators sphingolipid synthesis important although global understanding regulation lacking used high resolution based proteomics phosphoproteomics analyze cellular response sphingolipid synthesis inhibition dataset reveals changes protein phosphorylation rather protein abundance dominate response blocking sphingolipid synthesis identified ypk signaling pathway likely activated conditions identified potential ypk target proteins data provide rich resource going mechanistic studies key elements cellular response depletion sphingolipid levels maintenance sphingolipid homeostasis data deposited proteomexchange identifier pxd
introduction treatment children clinically aggressive high risk neuroblastoma remains challenging less patients high risk neuroblastoma survive long term current therapies survivors risk serious treatment related late toxicities review new evolving treatments may ultimately improve outcome children high risk neuroblastoma decreased potential late adverse events areas covered new strategies treating high risk neuroblastoma reviewed including radiotherapy targeted cytotoxics biologics immunotherapy molecularly targeted agents recently completed ongoing neuroblastoma clinical trials testing novel treatments highlighted addition discuss ongoing clinical trials designed evaluate precision medicine approaches target actionable somatic mutations oncogenic cellular pathways expert opinion advances genomic medicine molecular biology led development early phase studies testing biologically rational therapies targeting aberrantly activated cellular pathways many drugs wider therapeutic index standard chemotherapeutic agents treatments may effective less toxic current strategies however effectively integrate targeted strategies robust predictive biomarkers must developed identify patients benefit approaches rapidly match treatments patients diagnosis
objective pathophysiological mechanisms responsible formation intracranial aneurysms las remain partially elucidated however current evidence suggests genetic component purpose study investigate specific anatomical variations arterial complex associated presence anterior communicating artery acoa aneurysms familial forms las methods multicenter study investigated bifurcation las patients sporadic acoa without family history sacaa group patients acoa family history facaa group healthy first degree relatives hfdrs use angiography mra reconstructions symmetry segments angle segments analyzed models group measurements compared among groups results twenty four patients sacaa patients facaa hfdrs included study asymmetrical configuration segments frequent facaa group hfdr group aneurysm side angle lower facaa group sacaa group hfdr group contralateral side difference angles groups conclusions anatomical shape acoa complex seems similarly associated presence acoa las facaa sacaa groups highlights role played hemodynamic constraints aneurysm formation questions hypothesis hereditary character anatomical shapes
recently discovered human polyomavirus mcpyv frequently found merkel cell carcinoma mcc tissue believed causally linked mcc pathogenesis cell lines established mcc represent valuable tool study contribution mcpyv mcc pathogenesis hitherto mcpyv positive line described analyzed mcc cell lines presence integration pattern copy number mcpyv cell lines mcpyv specific sequences detected lines multiple copies viral genomes per cell detected sequencing pcr amplificates identified distinct mutations predicted lead expression truncated large antigen cell line clonal integration concatamerized viral genomes confirmed southern blotting mcc cell lines conventionally categorized classic variant divided subtypes based expression neuroendocrine markers morphology suggested presence mcpyv might promote classic phenotype notion supported data instead find mcpyv positive well negative lines classic variety indicating distinguishing features either inherently independent viral infection become course tumorigenesis cell line establishment therefore suggest novel classification scheme based mcpyv presence integration patterns mutations cell lines described extend repertoire available mcpyv positive mcc lines aid elucidation role mcpyv pathogenesis mcc
background one twenty five people suffer mood disorder current treatments sub optimal poor patient response uncertain modes action thus need better understand underlying mechanisms determine mood wrong affective disorders systems biology approaches yielded important biological discoveries complex diseases cancer potential affective disorders reviewed scope review review provide general background affective disorders plus outline experimental computational systems biology current application approaches understanding affective disorders considered future recommendations made major conclusions experimental systems biology applied study affective disorders especially genome transcriptomic levels however data generation slowed lack human tissue suitable animal models present computational systems biology applied understanding affective disorders occasions studies provide sufficient novel biological insight motivate use computational biology field general significance common many complex diseases much time money spent generation large scale experimental datasets next step use emerging computational approaches predominantly developed field oncology leverage biological insight datasets lead critical breakthroughs required effective diagnosis stratification treatment affective disorders elsevier rights reserved
cancer serious hazard human health around world however many current therapies remain toxic poor view understanding immunology tumor biology cancer immunotherapy minimal toxicity regarded promising strategy cancer treatment immune surveillance unfortunately efficacy immunotherapy impeded resisted due tumor immune evasion mechanism hence targeted cancer immunotherapy proposed tackle tumor immune suppression complexity malignant tumor cells nanotechnology based immunotherapy improved limitations enhanced therapeutic efficiency traditional immunotherapy review illustrates recent progresses immunotherapy based nanotechnology reveals nanodevices could utilized active passive cancer immunotherapy
vacuolar atpase atpase electrogenic proton pump highly expressed plasmodium falciparum human malaria parasite although atpase driven proton transport involved various physiological processes parasite overall features atpase falciparum including gene organization biogenesis far less known report cdna cloning proteolipid subunit falciparum smallest highly hydrophobic subunit atpase pcr analysis well northern blotting indicated expression proteolipid gene parasite cells cdna encodes complete reading frame comprising amino acids obtained deduced amino acid sequence exhibits similarity yeast human counterparts respectively southern blot analysis suggested presence single copy proteolipid gene exons introns upon transfection cdna yeast null mutant cells became able grow neutral accompanied vesicular accumulation quinacrine contrast mutated proteolipid replacement glutamate residue glutamine lead recovery growth ability vesicular accumulation quinacrine results indicated cdna actually encodes proteolipid falciparum proteolipid functional yeast elsevier rights reserved
aimit predicted dispersal gene flow ectoparasites wide host ranges correlated vagilities mobile hosts test phylogeographical structure widespread generalist tick occurring large ungulates determined compared previously published host patterns locationafrica methodsmtdna cytochrome oxidase subunit coi sequences generated hyalomma truncatum specimens sampled afrotropical localities subsample sequenced nuclear histone calreticulin crt regions phylogeographical inferences made using haplotype networks bayesian analysis population structure isolation distance ibd bayesian gene tree demographic changes populations determined bayesian skyline plots resultstwo highly divergent geographically confined mtdna clades detected partly supported significant differentiation nuclear dna level clades differ mtdna coi sequence divergence southern african clade expanded approximately shows geographical barriers dispersal also ibd northern african clade shows signs ibd least five distinct genetic subgroups earlier expansion conclusionthe phylogeography generalist tick broadly congruent host vicariance supports previously defined african pleistocene savanna refugia magnitude sequence divergence geographically separated genetic lineages suggests truncatum comprises two distinct yet undescribed species dispersal ectoparasites wide host ranges dependent ability various life stages parasite survive host environment coupled host movement
remarkable regenerative capacity lung suggests stem cells could therapeutic importance diverse lung diseases however successful exploitation lung stem cell biology long hampered inability maintain expand adult lung stem cells retaining multi lineage potential vitro recently advances understanding stem cell niches role key signalling modulators controlling stem cell maintenance differentiation fuelled development new vitro three dimensional culture technologies sustain stem cell driven formation near physiological self organizing structures called organoids review basic approaches organoid model systems highlight recent achievements generation organoids adult stem progenitor cells murine human lungs evaluate current applications studying cellular changes proliferation differentiation plasticity cell polarity cellular molecular crosstalk epithelial cells stroma advantages limitations organoids clinical use also discussed
staphylococcus aureus dangerous human pathogen characterized growing antibiotic resistance virulence aureus relies variety secreted cell surface associated virulence factors among certain proteolytic enzymes play important role amid staphylococcal extracellular proteases encoded spi operon remain poorly characterized terms enzymology physiological role initial data demonstrated spi proteases exhibit restricted substrate specificity study describes development convenient protein fret substrates spib protease characterization substrate preference protease position kinetic data hydrolysis panel substrates substituted said position provided
individual plant genotypes well genotypic diversity shape structure function ecosystems however abiotic environment may modify genotypic influences ecosystem level responses explore interactions plant genotype genotypic diversity soil nutrient availability affect structure function temperate grassland ecosystem manipulated genotypic diversity common perennial herbaceous plant solidago altissima single genotype monoculture diversity plots soil nutrient availability nitrogen phosphorus nitrogen phosphorus unmanipulated control common garden setting tracked temporal changes ecosystem structure leaf area index net primary productivity well variety ecosystem functions net ecosystem carbon water exchange soil carbon efflux growing season found variation plant genotype identity consistently shaped ecosystem structure ground net primary productivity inconsistently altered several ecosystem functions across time instance variation plant genotype identity influenced net ecosystem carbon dynamics early growing season influenced water dynamics later growing season strength relationship genotypic diversity ecosystem function declined season relationship ecosystem structure ground net primary productivity function net ecosystem carbon water exchange varied across treatments overall strong correlation ecosystem structure function across monoculture genotype plots weak relationship ecosystem structure function across mixed genotype plots surprisingly soil nutrients influence ecosystem structure minimal impacts carbon water flux data suggest plant genetic variation extent plant genotypic diversity strongly influence ecosystem structure function old field ecosystem nutrient availability directly interactively influence ecosystem structure function
present mechanism metabolic formation cholesterol discussed difficulties arising mechanism highlighted revision chemical reactions biological cells give rise cholesterol sterols presented mechanism cholesterol formation based forms properties polyphosphoric acids compounds common plant animal cells reactions examples biochemical reactions involve stereochemistry inorganic molecule well stereochemistry organic molecules demonstrated cholesterol related compounds entering produced human metabolism decomposed fluids digestive system one product recycled production cholesterol links formation cholesterol degenerate conditions obesity diabetes encountered human metabolism discussed obesity metabolism
century systems biology holistic approach understand life cross talk study genome rnome proteome cell describe column based rapid method simultaneous extraction dna rna mirna microrna proteins experimental sample without prior fractionation allows direct correlation genomic epigenomic transcriptomic proteomic data method provides simple effective way analyse biomolecules without affecting yield quality also show isolated biomolecules highest purity compatible respective downstream applications pcr amplification pcr reverse transcription pcr real time pcr reverse northern blotting sds page western blot analysis buffers reagents used method optimized extensively achieve cost effective reliable procedure separate functional biomolecules cell
genus brucella causes significant economic losses due infertility abortion stillbirth weak calves neonatal mortality livestock brucellosis still zoonosis public health importance worldwide study aimed optimize evaluate pcr assays used diagnosis brucella infections aim several primers pcr protocols performed compared brucella cultures biological material inoculated brucella pcr assays genus species specific oligonucleotide primers derived rrna sequences brup omps jpf jpr ter brucella used primers except brup detected dna reference brucella strains field isolates spiked blood milk semen samples primer oriented pcr assays detected minimal numbers brucella spiked serum fetal stomach content primer oriented pcr assays detected minimal numbers brucella field samples collected sheep cattle examined bacteriological methods optimized pcr assays overall sensitivity pcr assays found superior conventional bacteriological isolation brucella dna detected aborted fetus blood milk semen serum samples pcr assays respectively conclusion pcr assay optimized conditions found valuable sensitive specific detection brucella infections animals
neurosciences psychiatry emergence large multi center population imaging studies raises numerous technological challenges distributed data collection across different institutions countries final data publication service one must handle massive heterogeneous complex data genetics imaging demographics clinical scores data must efficiently obtained downloadable present python solution based cubicweb open source semantic framework aimed building population imaging study repositories addition focus tools developed around framework overcome challenges associated data sharing collaborative requirements describe set three highly adaptive web services transform cubicweb framework multi center upload platform collaborative quality assessment platform publication platform endowed massive download capabilities two major european projects imagen aims currently supported described framework also present python package enables end users remotely query neuroimaging genetics clinical data scripts
mountain pepper litseacubeba lour pers lauraceae important industrial crop ingredient cosmetics pesticides food additives potential biofuels properties attributed monoterpenes sesquiterpenes however still integrated model describing differentially expressed genes degs involved terpenoid biosynthesis fruit development cubeba performed digital gene expression dge using illumina ngs platform evaluated changes gene expression fruit development cubeba dge generated expression data approximately genes fruit days flowering daf served control total regulated genes regulated genes identified daf respectively pathway analysis revealed genes involved terpenoid biosynthesis pathways three degs continued increasing declining trends fruit development quantitative real time pcr qrt pcr results five differentially expressed genes consistent obtained illumina sequencing results provide comprehensive molecular biology background research fruit development information aid metabolic engineering increase yields cubeba essential oil
innovations clinical genetics increased diagnosis treatment prognosis inherited genetic conditions igcs led increased number families seeking genetic testing genetic counselling increased clinical load genetic counsellors gcs keeping pace biomedical discoveries interventions required support families understand communicate cope inherited genetic condition socio psychological research genomics spring collaborative developed new intervention based multi family discussion groups mfdgs support families affected igcs train gcs delivery potential challenge implementing intervention whether gcs willing able undergo training deliver mfdg analysing three multi perspective interviews gcs paper evaluates training received findings suggests mfdgs potential valuable resource supporting families communicate genetic risk information enhance family function emotional well furthermore demonstrate feasible train gcs delivery intervention potential integrated clinical practice longer term implementation routine clinical practice however relies changes organisation clinical genetics services genetic counsellors professional development
single enzyme molecule assays performed coli beta galactosidase using capillary electrophoresis based protocol assays performed using double incubations two substrates resorufin beta galactoside ddao beta galactoside simultaneously variation individual enzyme molecules ratio product peak areas two different substrates used indistinguishable variation peak areas replicate incubations given enzyme molecule suggests enzyme heterogeneous respect relative activity two different substrates used
glutamate transporter glt rodents eaat humans alternatively spliced complex manner including use multiple untranslated regions several coding variants used quantitative pcr profile splice variants human rat brain also used pcr northern blotting demonstrate novel isoform gltb similar utr extending intron exon approximately untranslated region glt however important finding concerns aberrant transcript lacking exon contains motif permitting translocation endoplasmic reticulum variant previously associated amyotrophic lateral sclerosis several groups reported high levels normal brain tissue contrast data shows aberrant transcript present major eaat isoforms elsevier ltd rights reserved
report homologue apolipoprotein gene aniphiapod amphioxus branchiostoma belcheri tsingtauense first finding basal chordate cephalochordate main features protein predicted amphiapod characteristic apolipoprotein phylogenetic analysis places amphiapod base phylogenetic tree suggesting amphiapod archetype vertebrate apod genes whole mount situ hybridization northern blotting pcr well situ hybridization histochemistry reveal amphiapod expressed tissues derived mesoderm endoderm including notochord hind gut contrasts strong expression patterns apod genes ectodermal derivatives mammals birds expression profiles apod gene may changed expressed endo mesodermal derivatives amphioxus vertebrate cephalochordate lineages diverged alternatively apod gene may first expressed endo mesoderm embryogenesis last common ancestor chordates subsequently came expressed ectodermal derivatives vertebrates including mammals birds international federation cell biology published elsevier ltd rights reserved
breast cancer commonly diagnosed cancer among women therapeutic treatments breast cancer generally include surgery chemotherapy radiotherapy endocrinotherapy molecular targeted therapy development molecular biology immunology pharmacogenomics immunotherapy becomes promising new field breast cancer therapies review discussed recent progress breast cancer immunotherapy including cancer vaccines bispecific antibodies immune checkpoint inhibitors several additional immunotherapy modalities early stages development also highlighted believed new immunotherapeutic strategies ultimately change current status breast cancer therapies
background microsatellite unstable colorectal cancers crc due deficient dna mismatch repair dmmr represent approximately crcs united states microsatellite unstable crcs represent heterogenous group diseases distinct oncogenesis pathways overlapping clinicopathologic features groups many important differences present therefore determination etiology dmmr vital proper patient management follow main body epigenetic inactivation mlh mmr gene sporadic microsatellite unstable crc germline mutation mmr gene lynch syndrome two common mechanisms pathogenesis microsatellite instability crc however subset dmmr crc cases identified screening tests known associated genetic alterations appreciated current genetic analysis etiology dmmr unclear leads patient anxiety creates challenges clinical management conclusion critical distinguish patients patients tumors due dmmr proper screening protocol employed patients families goal save lives avoiding unnecessary anxiety costs review summarizes major pathogenesis pathways dmmr crcs clinicopathologic features practical screening suggestions addition include frequently asked questions mmr immunohistochemistry interpretation
heat treatment powerful eco friendly method prevent penicillium infection citrus fruit postharvest several studies dedicated investigate general chemical changes justify immediate reaction responsible induced tolerance primary metabolism enzymology affected heat treatment along prolonged cold storage still unclear work main enzymes carbon metabolism valencia orange flavedo analyzed postharvest period heat treatment degrees enzymatic activity measurements indicated nadph producing enzymes glucose phosphate dehydrogenase non phosphorylating glyceraldehyde phosphate dehydrogenase lower levels fruit parallel higher synthesis sucrose organic acids observed epicarp sucrose phosphate synthase would important role sucrose accumulation pathway carbon glycolysis affected cold storage independently way favors atp dependent phosphofructokinase ppi dependent homologous enzyme use phosphoenolpyruvate pep pep carboxylase instead pyruvate kinase similarly phenylpropanoid compounds show major changes response although showed marked descent along cold storage proteomic studies revealed alterations abundance ascorbate peroxidase two germin like proteins small hsps completing description main metabolic changes tissue elsevier rights reserved
vitro metabolisms bromo dimethoxyphenethylamine methoxy diisopropyltryptamine meo dipt dimethoxy propylthiophenethylamine studied using testliver rat testliver human new three dimensional rat human hepatocyte culture systems respectively metabolites produced incubation media measured liquid chromatography tandem mass spectrometry gas chromatography mass spectrometry data obtained vitro system rat origin carefully compared obtained rat vivo experiments metabolites found vivo experiments could reproduced present three dimensional vitro experiments although quantitative metabolite distribution patterns obtained three dimensional system somewhat different vivo experiments human vivo experiments possible especially dubious designer drugs vitro experiments using three dimensional human hepatocyte culture system seem useful studying human metabolism new designer drugs alternative human experiments
banana streak virus bsv significant constraint banana production kenya ability quickly reliably detect bsv important management virus hence detection variability bsv necessary optimization suitable diagnostic protocol used routine screening tissue cultured material study potentially infected banana plants nine major banana growing regions kenya tested bsv using serological molecular techniques virus particles detected immunosorbent electron microscopy isem seven ten tested samples confirming presence bsv immuno capture polymerase chain reaction pcr using degenerate primer used extracted viral dna immune captured viral particles samples enzyme linked immunosorbent assay elisa confirmed presence bsv samples pcr tested samples total sequences obtained eight samples pcr embl accession numbers across conserved reverse transcriptase rnaseh region genome pairwise comparison sequences suggested represented seven different isolates sequence identity thresholds southern blotting hybridization radiolabelled probe lisulya clone confirmed integrated episomally replicating viral dna may present least one kenya samples therefore presence bsv kenya diversity within kenyan population confirmed diagnostic protocol optimized confirmed isolates
phytophthora species highly destructive phytopathogens associated massive damage natural ecosystems agriculture citrus production also affected mainly hemibiothrophic oomycete phytophthora parasitica causes root rot gummosis poncirus trifoliata citrus sunki two rootstocks widely used citrus orchards pose resistance susceptible interaction parasitica respectively makes suitable models study plant defense mechanisms gene expression analysis important tool type study particular pcr qpcr hence crucial use appropriate reference genes expression normalization aim evaluate stability several candidate reference genes determine set best suited normalization citrus infected parasitica evaluated five candidate reference genes selected database citest genorm normfinder algorithms used assess best reference genes found stable genes used qpcr analysis trifoliata plants gapc box egidh gapc suitable sunki four genes found excellent normalizers stable throughout infection regardless pathogen attack symptom development
dna methylation fundamental means epigenetic gene regulation occurs virtually cell types many higher organisms including humans plays vital roles cell differentiation homeostatic maintenance cell phenotype control dna methylation traditionally attributed highly coordinated linear process whose dysregulation associated numerous pathologies including cancer occurs early even prior development neoplastic tissues recent experimental evidence demonstrated contrary prevailing paradigms methylation patterns actually maintained inexact dynamic processes processes normally result minor stochastic differences cells accumulate age however various factors including cancer lead substantial differences intercellular methylation patterns viz methylation heterogeneity advancements molecular biology techniques beginning allow insight heterogeneity contributes clonal evolution overall cancer heterogeneity current review begin presenting didactic overview basal bimodal methylome established maintained provide synopsis factors lead accrual heterogeneous methylation heterogeneity may lead gene silencing impact development cancerous phenotypes lastly highlight currently available methylation assessment techniques discuss suitability study heterogeneous methylation published elsevier ltd
investigate presence genetic environment multiresistance gene cfr jeotgalicoccus pinnipedialis macrococcus caseolyticus pigs total bacterial isolates florfenicol mics epsilon obtained nasal swabs individual pigs gram positive isolates staphylococci enterococci screened pcr presence known florfenicol resistance genes species assignments cfr carrying isolates based results biochemical profiling rdna sequencing locations cfr gene determined southern blotting regions flanking cfr gene sequenced modified random primer walking strategy transferability cfr assessed electrotransformation two caseolyticus isolates one pinnipedialis isolate cfr positive cfr gene located either plasmid pss widely distributed among staphylococci pig origin approximate plasmid pjp region pjp included cfr gene adjacent showed identity corresponding region plasmid pscfs addition genes aaddaaca aphd ble erm coding aminoglycoside bleomycin macrolidelincosamidestreptogramin resistance respectively also identified plasmid pjp study showed plasmids carrying multidrug resistance gene cfr present two new genera commensal environmental bacteria macrococcus jeotgalicoccus observation underlines role commensal environmental flora dissemination clinically important resistance genes cfr
infectious plant diseases caused pathogenic microorganisms fungi bacteria viruses viroids phytoplasma nematodes worldwide plant pathogen infections among main factors limiting crop productivity increasing economic losses plant pathogen detection important first step manage plant disease greenhouses field conditions country boarders current immunological techniques used detect pathogens plant include enzyme linked immunosorbent assays elisa direct tissue blot immunoassays dtbia dna based techniques polymerase chain reaction pcr real time pcr rtpcr dot blot hybridization also proposed pathogen identification detection however methodologies time consuming require complex instruments suitable situ analysis consequently strong interest developing new biosensing systems early detection plant diseases high sensitivity specificity point care context revise recent advancement development advantageous biosensing systems plant pathogen detection based antibody dna receptors use different nanomaterials nanochannels metallic nanoparticles development innovative sensitive biosensing systems detection pathogens bacteria viruses point care also shown plastic paper based platforms used purpose offering cheap easy use really integrated sensing systems rapid site detection beside devices developed research development level brief revision commercially available kits also included review
background observational associations cannabis schizophrenia well documented ascertaining causation challenging used mendelian randomization utilizing publicly available data method ascertaining causation observational data method performed directional two sample using summary level genome wide data international cannabis consortium icc psychiatric genomics consortium pgc single nucleotide polymorphisms snps associated cannabis initiation schizophrenia combined using inverse varianceweighted fixed effects approach also used height education genome wide association study data representing negative positive control analyses results evidence consistent causal effect cannabis initiation risk schizophrenia odds ratio per doubling odds cannabis initiation confidence interval strong evidence consistent causal effect schizophrenia risk likelihood cannabis initiation per doubling odds schizophrenia findings predicted negative control height weaker predicted positive control years education analyses conclusions results provide evidence cannabis initiation increases risk schizophrenia although size causal estimate small find stronger evidence schizophrenia risk predicts cannabis initiation possibly genetic instruments schizophrenia stronger cannabis initiation
sphingolipid signaling caenorhabditis elegans vital sensing environmental change effecting appropriate cellular response many molecular components sphingolipid intermediary metabolism conserved throughout evolution review use elegans model system conducting sphingolipid based scientific investigation helped better understand vital roles remarkable lipids play human metabolism disease
parasitic weed striga gesnerioides major threat cowpea productivity throughout savannas west central africa identification sources gesnerioides resistance incorporation breeding programs would beneficial strategy combat devastation caused parasite cowpea fields study examined one hundred ninety four accessions four commercial varieties two controls collected mini core collection cowpea held international institute tropical agriculture genebank resistance gesnerioides race prevalent race nigeria using phenotypic screening molecular marker analysis studies identified two cowpea accessions tvu tvu resistant gesnerioides resistance lines associated molecular marker ssr known segregate gene conferring resistance cultivar phenotypically resistance tvu tvu expressed hypersensitive response site infection roots allelism tests indicated gene conferring resistance tvu independent conferring resistance tvu tvu provide additional new sources resistance striga races prevalent nigeria
purpose review galactose key source energy crucial structural element complex molecules particularly important early human development however galactose metabolism might important fetal neonatal development also adulthood evidenced inherited disorders galactose metabolism purpose review summarize current evidence galactose metabolism health disease recent findings biological importance galactose goes beyond importance nutrient metabolite galactose selected evolutionary pressure exert also crucial structural role macromolecules additionally galactose recently reported beneficial number diseases particularly affecting brain summary galactose crucial human metabolism established role energy delivery galactosylation complex molecules evidence roles emerging
systemic lupus erythematosus sle chronic relapsing autoimmune disease characterized presence autoantibodies directed nuclear antigens chronic inflammation although etiology sle remains unclear influence environment factors largely reflected epigenetic mechanisms dna methylation changes particular generally considered main players pathogenesis sle studied dna methyltransferases dnmts type transcript levels peripheral blood mononuclear cells patients diagnosed systemic lupus erythematosus healthy control subjects furthermore association dnmt dnmta dnmtb mrna levels gender age major clinical manifestations analyzed peripheral blood mononuclear cells pbmcs isolated sle patients healthy controls reverse transcription real time quantitative polymerase chain reaction qpcr analyses used determine dnmt dnmta dnmtb mrna expression levels significantly lower dnmt dnmta transcript levels sle patients observed compared healthy controls nevertheless dnmtb mrna expression levels markedly lower compared dnmt dnmta pbmcs affected patients control subjects furthermore dnmt transcript levels positively correlated sle disease activity index sledai dnmta transcript levels negatively correlated patients age analyses confirmed importance epigenetic alterations sle etiology moreover results suggest presence clinical manifestations phototosensitivity arthritis might associated dysregulation dna methyltransferases mrna expression levels
autoimmune regulator aire essential perinatal period prevent multiorgan autoimmunity show aire regulated single positive thymocyte trafficking neonatal period critical thymic egress reduced thymic emigration found aire mice neonatal period leading enhanced homeostatic expansion peripheral cells early weeks age neonatal aire mice thymic expression ccr ligands dramatically reduced resulting decreased thymocyte motility thymocyte emigration reduction thymic egress aire mice alleviated beyond weeks age early upregulation signaling numbers quality thymic emigrants essential establishment maintenance peripheral tolerance reduced thymic emigration neonatal period may deteriorate autoimmunity caused emigration autoreactive cells
background difference clinical presentation causality assessments outcomes patients delayed antibiotic associated cutaneous adverse drug reactions cadr nonantibiotic associated cadr ill defined objective examined etiology cadr regard type antibiotic exposure allergy labeling patient outcomes comparison cadr methods retrospective observational inpatient cohort study cadr performed january august patients divided cadr cadr groups analysis cadr defined erythema multiforme fixed drug eruption acute generalized erythematous pustulosis drug reaction eosinophilia systemic symptoms dress drug associated linear iga disease stevens johnson syndrome toxic epidermal necrolysis results patients cadr cadr male sex median length stay days median charlson comorbidity index inpatient mortality higher cadr compared cadr median drug latency lower cadr days sulfonamide antibiotics glycopeptides implicated cadr dress frequently reported cadr cadr diagnosis antibiotic therapy administered patients higher cadr compared cadr fluoroquinolones glycopeptides vancomycin teicoplanin carbapenems used commonly cadr conclusions antibiotics cause cadr requiring hospital admission episodes associated longer length stay higher age adjusted charlson comorbidity index shorter drug latency mortality cadr glycopeptide sulfonamide antibiotic exposure predominated american academy allergy asthma immunology
gluconate commonly encountered nutrient degraded enzyme gluconokinase generate phosphogluconate used isothermal titration calorimetry study properties reaction delta cat reported along substrate binding data propose reaction follows ternary complex mechanism atp binding first reaction inhibited gluconate binds enzyme adp complex forming dead end complex study exemplifies itc used determine mechanisms enzyme catalyzed reactions currently commonly applied federation european biochemical societies published elsevier rights reserved
enzyme catalyzes formation first stable anthocyanin biosynthesis natural compounds udp glucose anthocyanidin glucosyltransferase ufgt cdna clone fhgt encoding ufgt isolated freesia hybrida phylogenetic tree analysis indicated fhgt novel member glycosyltransferase classified monocot subgroups semi quantitative pcr analysis detected transcripts fhgt different organs hybrida petals freesia cultivars different colors expression level reached maximum fully opened stage petals characterization enzymatic assays indicated fhgt role anthocyanin glycoside biosyntheses vitro elucidate function fhgt rna interference vector part fhgti constructed introduced petunia grandiflora agrobacterium mediated transformation integration fhgt petunia genome confirmed pcr southern blotting sqrt pcr revealed endogenous phgt mrna expression levels decreased transgenic lines compared wild type content total anthocyanin pigments also decreased reduction mrna transcript levels transgenic petunia plants significant changes flower colors summary work identified ufgt gene freesia hybrida demonstrated method modify plant flower color redirecting anthocyanin biosynthesis
hemophilia occurs due deficiency human blood coagulation factor hfix currently effective treatment hemophilia identified gene therapy considered appropriate treatment mesenchymal stem cells mscs homing abilities low immunogenicity therefore may potential cell carriers targeted drug delivery lesional tissues present study constructed adeno associated virus integration site aavs targeted vector termed aavs green fluorescent protein gfp hfix zinc finger nuclease zfn expression vector nucleofection used transfect targeting vector zfn expression vector human mscs gfp positive cells selected using flow cytometry site specific integration clones obtained following monoclonal culture subsequent detections performed using polymerase chain reaction southern blotting following confirmation stem cell traits site specific integration mscs vivo vitro expression levels hfix detected results demonstrated hfix gene successfully transfected aavs locus human mscs clones site specific integration retained stem cell traits mscs addition hfix effectively expressed vivo vitro significant differences expression levels identified among individual clones conclusion present study demonstrated exogenous gene hfix effectively expressed following site specific targeting aavs locus mscs therefore mscs may used potential cell carriers gene therapy hemophilia
renewable energy production expanding rapidly despite mostly unknown environmental effects wildlife habitats used genetic stable isotope data collected golden eagles aquila chrysaetos killed altamont pass wind resource area apwra california demographic models test hypotheses geographic extent demographic consequences fatalities caused renewable energy facilities geospatial analyses values obtained feathers showed apwra killed eagles recent immigrants population long distances away data nuclear genes indicated subset immigrant eagles genetically similar birds identified locals data demographic models implied face mortality apparent stability local golden eagle population maintained continental scale immigration analyses demonstrate ecosystem management decisions concerning effects local scale renewable energy continental scale consequences
order obtain ideal material using artificial corneal skirt porous polymer hydrogel containing hydroxyethyl methacrylate hema trimethylolpropane triacrylate tmpta butyl acrylate prepared one step radical polymerization method usage caco whisker porogen physical chemical properties fabricated polymer hydrogel adjusted caco whisker content pore size porosity water content materials surface topography series cell biology experiments human corneal fibroblasts hcfs carried evaluate properties artificial corneal skirt adhesion cells materials different pore size porosity apoptosis materials different characteristics distribution cells material surface results revealed high porosity could improve water content hydrogel also strengthen adhesion hcfs hydrogel addition high porosity hydrogel whisker shape pores showed much elongate spindle like morphology low porosity hydrogels mtt assay certified resulted polymer hydrogel material possessed excellent biocompatibility suitable hcfs growing making promising developed artificial corneal skirt elsevier rights reserved
recent advances microelectronics biosensors enabling developments innovative biochips advanced healthcare providing fully integrated platforms continuous monitoring large set human disease biomarkers continuous monitoring several human metabolites addressed using fully integrated minimally invasive devices located sub cutis typically peritoneal region extends techniques continuous monitoring glucose currently pursued diabetic patients however several issues considered order succeed developing fully integrated minimally invasive implantable devices innovative devices require high degree integration minimal invasive surgery long term biocompatibility security privacy data transmission high reliability high reproducibility high specificity low detection limit high sensitivity recent advances field already proposed possible solutions several issues aim present paper present broad spectrum recent results propose future directions development order obtain fully implantable systems continuous monitoring human metabolism advanced healthcare applications
perturbations colonization process human gastrointestinal tract suggested result adverse health effects later life although much research performed bacterial colonization succession much less known two domains life archaea eukaryotes describe colonization succession bacteria archaea microeukaryotes first year life samples collected around days within gastrointestinal tract infants delivered either vaginally cesarean section using combination quantitative real time pcr well rrna gene amplicon sequencing sequences organisms belonging three domains life detectable collected meconium samples microeukaryotic community composition fluctuated strongly time early diversification delayed infants receiving formula milk cesarean section delivered csd infants experienced delay colonization succession observed three domains life shifts prokaryotic succession csd infants compared vaginally delivered infants apparent early days characterized increased relative abundances genera streptococcus staphylococcus decrease relative abundance genera bifidobacterium bacteroides generally depletion bacteroidetes detected early day postpartum csd infants causing significantly increased firmicutes bacteroidetes ratio days compared infants although delivery mode appeared strongest influence differences infants factors younger gestational age maternal antibiotics intake likely contributed observed patterns well findings complement previous observations delay colonization succession csd infants affects bacteria also archaea microeukaryotes highlights need resolving bacterial archaeal microeukaryotic dynamics future longitudinal studies microbial colonization succession within neonatal gastrointestinal tract
bluetongue non contagious haemorrhagic culicoides borne disease ruminants causative agent bluetongue virus btv member orbivirus genus reoviridae family far btv serotypes identified worldwide global distribution bluetongue expanding rapid detection btv preferably field critical timely implementation animal movement restrictions vector control measures date many laboratory based molecular assays detection btv developed methods require samples shipped central laboratory sophisticated instruments highly skilled technicians perform assays conduct analyses interpret results report development evaluation rapid portable user friendly pan btv reverse transcription insulated isothermal polymerase chain reaction iipcr assay potentially used low resource field conditions total length assay min end assay results automatically displayed without need data interpretation iipcr assay detected btv isolates two vitro transcribed rna samples representing btv serotypes assay cross react animal viruses tested including two closely related orbiviruses analytical sensitivity assay low nine copies vitro transcribed double stranded btv rna analysis btvinfected whole blood samples showed btv iipcr assay sensitive real time pcr assay potentially used rapid screening animals btv routine diagnostics monitoring bluetongue outbreaks ruminants culicoides vectors field laboratory
objectives study determine kinetic parameters purified recombinant bla mab bla mmas spectrophotometry analyze genetic environment bla mab bla mmas genes species polymerase chain reaction sequencing furthermore silico models enzymes complex imipenem obtained modeling tools results showed bla mab bla mmas similar hydrolysis behavior displaying high catalytic efficiencies toward penams cephalothin nitrocefin none enzymes well inhibited clavulanate bla mmas hydrolyzes imipenem higher efficiency cefotaxime aztreonam bla mab bla mmas showed closest structural homologs kpc sfc correlate mild carbapenemase activity toward imipenem observed least blammas also seem differ class lactamases presence flexible loop could impact hydrolysis efficiency antibiotics consensus sequence tcgaca embedded end mab may constitute bla mab bla mmas promoter results suggest resistance mechanisms fast growing mycobacteria could probably evolving toward production lactamases improved catalytic efficiencies drugs commonly used treatment mycobacterial infections endangering use important drugs like carbapenems
absorption metabolism excretion desloratadine clarinex characterized six healthy male volunteers subjects received single oral dose similar blood urine feces collected well absorbed drug derived radioactivity excreted urine feces exception single subject extensively metabolized major biotransformation pathway consisted hydroxylation position pyridine ring subsequent glucuronidation glucuronide five six subjects slowly eliminated mean persisted plasma post dose contrast similar quantifiable plasma concentrations entire sampling period one subject identified phenotypically poor metabolizer subject also exhibited correspondingly lower amounts urine feces disposition subject characterized slow absorption slow metabolism prolonged elimination clinical studies confirmed lack safety issues associated polymorphism metabolism
desmoplastic small round cell tumor dsrct aggressive small round cell sarcoma typically occurs intra abdominally adolescents young adults characterized recurrent translocation leading generation ewsr fusion gene codes chimeric protein transcriptional regulatory activity dsrct characteristic histologic appearance nests uniform small cells within prominent fibroblastic stroma immunohistochemically shows multidirectional differentiation expression epithelial neural muscle markers illustrate case dsrct presented large intra abdominal mass harbored ewsr rearrangement fluorescence situ hybridization ewsr fusion transcripts reverse transcription polymerase chain reaction pcr histologically entirely solid morphology lacking evidence desmoplastic stroma purely solid variant emphasizes even occurring typical location dsrct may difficult recognize lacking nonclassical morphology clinical relevance dsrct pattern could misdiagnosed ewing sarcoma pcr performed resulting prognostic therapeutic implications
objective access new step using pcr amplify targeted mtdna sequence detecting specifically plasmodium vivax infections false positive false negative results plasmodium falciparum methods study standardized new technical approach target mitochondrial dna sequence mtdna amplified using pcr technique tool detect plasmodium spp species specific primers designed hybridize cytochrome oxidase gene vivax cox falciparum cox iii two hundred blood samples collected basis clinical symptoms initially examined microscopic analysis preparing giemsa stained thick thin blood smears afterwards genomic dna extracted samples subjected pcr amplification using species specific primers amplified segments sequenced confirmation results results one hundred thirty two blood samples detected positive malaria pcr found positive pcr microscopy pcr vivax infection nine samples found false negative one vivax mono infection declared infection pcr samples identified falciparum gametes confirmed vivax pcr amplification sensitivity specificity found respectively conclusion results obtained pcr method comparatively better reliable microscopy
background micrornas mirnas crucial molecules regulate gene expression hence pathways key prostate cancer progression non coding rnas highly deregulated prostate cancer thus facilitating progression disease among many genes gained importance disease migration invasion enhancer mien novel gene located next neu amplicon human chromosome shown enhance prostate cancer cell migration invasion two key processes cancer progression mien differentially expressed normal cancer cells tissues understanding regulation mien microrna may enable development better targeting strategies methods mirnas could target mien predicted silico algorithms microarray analysis validation mirna expression performed qpcr northern blotting cells situ hybridization tissues mien levels molecules upon mirna regulation determined western blotting qpcr immunofluorescence functional effects mirna cells determined wound healing cell migration boyden chamber cell invasion clonal colony formation assays knockdown overexpression mirna overexpression mien utr cells transfected oligomirs plasmids respectively results novel mirna hsa mir mir identified validated highly expressed immortalized normal cells compared cancer cells regulator mien analysis human prostate tumors matched normal tissues confirmed mir highly expressed normal tissues compared low negligible expression tumors mien direct target mir mir alters mien rna quantity well cell dependent context along altering downstream effectors mir inhibited migratory invasive potential cells attenuated anchorage independent growth ability increased cadherin expression implicating role mesenchymal epithelial transition met conclusions results first time implicate mir regulator mien promising novel diagnostic prognostic tool prostate cancer
rho family gtpases signaling molecules orchestrate cytoskeletal dynamics variety cellular processes effect localized changes cytoskeleton active gtp bound conformation ability monitor active state rho gtpases space time critical understanding function summarize popular tools used live imaging active rho gtpases outlining advantages drawbacks approaches additionally highlight key features xenopus laevis embryo make well suited epithelial cell biology discuss application rho activity reporters xenopus laevis embryo led discovery novel phenomenon junctional rho flares
objectivesmicrorna mir regulates cell differentiation activation also associated hiv infection however remains unclear whether mir related cell response hiv infected individuals cell activation exhaustion methodswe performed cross sectional study involving hiv infected patients highly active antiretroviral therapy haart haart naive patients mir levels peripheral blood determined quantitative reverse transcription polymerase chain reaction pcr cell immune activation exhaustion homeostasis measured determining expression programmed death via flow cytometry resultsthe levels mir total peripheral blood mononuclear cells cells cells hiv infected patients increased nonresponders haart naive patients also exhibited higher percentage cells lower percentage cells also found higher levels expression cells hiv infected patients conclusionsour findings suggest mir levels peripheral blood hiv infected patients increased associated cell activation therefore mir potential biomarker immune response following hiv infection
report isolation molecular cloning initial characterization trichophyton rubrum pacc gene encodes putative protein homologous pacc rimp family signaling transcription regulators promoter region rubrum pacc gene contains four recognition sites gccaag pacc protein suggesting transcription gene could induced alkaline growth conditions enhanced expression profile rubrum pacc gene alkaline environment confirmed northern blotting analysis also report disruption pacc gene decreased secretion keratinolytic proteases ability mutant pacc grow human nail fragments sole source nutrition growth dermatophyte rubrum appear related molecular events depend action protein pacc
early efforts establish dietary recommendations focused defining minimum intakes nutrients needed prevent deficiency diseases although early recommendations proven successful preventing frank deficiency diseases new knowledge regarding functions nutrients biochemical physiological gene levels shifted emphasis defining kinds amounts nutrients needed optimize physiological mental functions prevent minimize development degenerative diseases dominant public health concerns several challenges must faced producing recommendations based new knowledge must recognized nutrients consumed isolation one another interactions single nutrient nutrients nonnutrients foods need taken account making dietary recommendations nutrient another factor influence dietary recommendations genetic variation humans new knowledge regarding effects genetic variability human metabolism ultimately lead development dietary recommendations address genetic influences nutritional needs specific segments population
twenty years passed since dysconnection hypothesis first proposed friston frith weinberger time neuroscience witnessed tremendous advances live world non invasive neuroanatomy computational neuroimaging bayesian brain genomics era come gone connectomics large scale neuroinformatics initiatives emerging everywhere dysconnection hypothesis article considers notion schizophrenia dysconnection syndrome developed enriched recent advances clinical neuroscience particular examine dysconnection hypothesis context theoretical neurobiology computational psychiatry empirical insights afforded neuroimaging associated connectomics iii bottom molecular biology genetics top systems biology perspectives converging mechanisms nature dysconnections schizophrenia authors published elsevier
two adult life history types among lamprey species nonparasitic parasitic former commencing final interval sexual maturation immediately metamorphosis extensive studies directly compare hormone profiles life cycles nonparasitic parastic lamprey species yet data may explain differences development reproductive maturation feeding status present study uses immunohistochemistry show life cycle profiles gonadotropin releasing hormones gnrh iii brain nonparasitic species american brook lamprey lampetra appendix comparison extensive published immunohistochemical data hormones parasitic species sea lamprey petromyzon marinas complete cdnas two lamprey prohormones proopiocortin poc proopiomelanotropin pom cloned appendix nuclectide deduced amino acid sequences compared previously published marinas poc pom cdnas species used expression studies northern blotting throughout life cycles although gnrh iii immunohistochemistry revealed similar distribution immunoreactive cells fibers two species life cycles qualitative evaluation staining intensity appendix implied early activity brains metamorphosis species particularly gnrh gnrh iii seems important larval life early metamorphosis species novel feature immunohistochemical study monthly observations distribution relative intensity two gnrhs critical period final sexual maturation lead spawning spent animal appendix poc pom nucleotide sequences identity respectively marinus poc pom earlier increase expression metamorphosis postmetamorphic life since correlation timing metamorphic development gonad maturation brain irgnrh intensity poc pom expression appendix concluded prohormones yield posttranslational products likely play substantial role development maturation events lead nonparasitic adult life history species elsevier inc rights reserved
charophytes group green algae whose ancestral lineage gave rise land plants resulted profoundly transformative event natural history planet extant charophytes exhibit many features similar found land plants relatively simple phenotypes make efficacious organisms study many fundamental biological phenomena several taxa including micrasterias penium chara coleochaete valuable model organisms study cell biology development physiology ecology plants new rapidly expanding molecular studies increasing use charophytes turn dramatically enhance understanding evolution plants adaptations allowed survival land frontiers plant science series charophytes provides assortment new research reports reviews charophytes emerging significance model plants
many plant leucine rich repeat receptor like kinases lrr rlks found regulate signaling plant defense processes study selected sequenced lrr rlk gene designated oryza rufipogon receptor like protein kinase orufrpk located within yield qtl yld wild rice oryza rufipogon accession irgc coding region two exons identified southern blotting determined orufrpk single copy gene sequence comparison cultivated rice orthologs osirpk osirpk osjnipponrpk respectively derived sativa ssp indica sativa ssp indica sativa ssp japonica nipponbare revealed presence single nucleotide polymorphisms snps five non synonymous substitutions insertion deletion sites biological role orufrpk defense related lrr rlk proposed basis cdna sequence characterization domain subfamily classification structural prediction extra cellular domains cluster analysis comparative gene expression
seafood highly perishable product unlike meats aged enhance tenderness seafood decomposition begins immediately post mortem pathogens listeria monocytogenes salmonella staphylococcus aureus common seafood terrestrial muscle foods however others clostridium botulinum type vibrio species aeromonas commonly associated exclusive marine food products packaging seafood products historically passive used protect oxygen desiccation microbial contamination tamper evident packaging became norm years ago around time modified atmosphere packaging map appeared panacea shelf life extension tightly regulated united states concern temperature abuse toxin production clostridium botulinum type time temperature indicators ttis present obvious solution map seldom used due cost nanotechnology newest wave food processing long term effects human metabolism unknown inertia defining properties regulatory oversight momentum appears largely driven large retailers prefer case ready seafood products standard package sizes rapid stocking limited effort
objectives present study aimed evaluate type specific human papillomavirus hpv strains women different clinical manifestations normal cervical cytology attending gynecology patient clinic hpv infection males attending private pathology laboratory routine check mumbai methods cervical swab specimens women normal cervical cytology detected pap used detection typing hpv pcr southern blotting sequencing males first void random urine specimens used hpv screening results thirty eight women tested positive hpv hpv mixed infection observed infected women respectively hpv types indicating high rate high risk hpv types among males hpv infection years nine married three unmarried conclusions present study revealed presence high risk hpv infection women normal cervical cytology first report western region india hpv infection males using urine specimen elsevier rights reserved
resource availability significantly alter host parasite dynamics abundant food provide resources hosts resist infections also increase host tolerance infections reducing competition hosts parasites food whether abundant food favors host resistance tolerance might depend type resource parasite exploits host tissue food vary based stage infection study evaluated low high resource diets affect cuban tree frog osteopilus septentrionalis resistance tolerance skin penetrating gut nematode aplectana stage infection compared low resource diet high resource diet enhanced frog resistance worm penetration tolerance worms traveled gut contrast low resource diet increased resistance establishment infection infection established worms could access food resources gut high resource diet enhanced host tolerance parasites high resource diet parasitized frogs consumed significantly food non parasitized frogs food restricted mass non parasitized frogs change whereas mass parasitized frogs decreased significantly thus high resource diet increased frog tolerance established worms frogs could fully compensate energy lost parasites study shows host parasite dynamics influenced effect resource availability host resistance tolerance depends parasites access food stage infection
introduction therapeutic options myelodysplastic syndromes mds limited hypomethylating agents hma lenalidomide rigosertib small molecule blocks ras mediated activation proteins containing common ras binding domain appears promising novel drug areas covered discovery mechanism action rigosertib results clinical trials described patients treated safety pharmacokinetics efficacy rigosertib summarized studies placed context history therapeutic development mds promise new tailored treatments based emerging knowledge heterogeneity molecular biology disease expert opinion summary phase iii study failed meet primary endpoint clearly showed significant improvement survival subset high risk mds patients primary hma failures new phase iii trial designed validate findings ongoing oral rigosertib phase trial produced transfusion independence similar patients lower risk mds without recombinant erythropoietin methylation based signature appears distinguish two groups validation early encouraging observations future clinical trials eagerly anticipated
aimto investigate effect simvastatin lipopolysaccharide lps stimulated inflammatory cytokines cell adhesion molecules nuclear factor transcription factors human dental pulp cells hdpcs methodologythe effect lps simvastatin human dental pulp cell hdpcs viability measured using dimethylthiazol diphenyltetrazolium bromide mtt assay expression inflammatory cytokines cell adhesion molecules evaluated reverse transcription polymerase chain reaction pcr enzyme linked immunosorbent assay elisa western blot analysis transcription factors evaluated western blot analysis statistical analysis performed analysis variance anova resultsthe viability cells exposed different concentrations coli lps gingivalis lps simvastatin significantly different compared control cells lps significantly increased interleukin mrna expression vascular cell adhesion molecule vcam intercellular adhesion molecule icam protein expression hdpcs treatment simvastatin significantly attenuated lps stimulated production vcam icam treatment simvastatin decreased lps induced expression phosphorylation also significantly decreased phosphorylation cytoplasm level nucleus conclusionssimvastatin suppressing effect lps induced inflammatory cytokine cell adhesion molecules transcription factors hdpcs therefore simvastatin might useful candidate pulp capping agent vital pulp therapy
cdna sequence osmt initially isolated subtractive cdna library ammonium fed rice oryza sativa leaves confirmed northern blot highly ammonium regulated compared nitrate full length cdna cloned pcr silico analysis reveals cdna includes open reading frame encodes rice metallothionein type peptide northern blotting analysis showed osmt gene predominantly expressed rice leaves weakly stems barely buds roots gene transcripts leaves significantly induced polyethylene glycol peg low temperature nacl activities three anti oxidative enzymes superoxide dismutase catalase peroxidases two non enzymic antioxidants reduced ascorbate reduced glutathione little differed ammonium nitrate fed rice leaves indicating induced osmt expression mediated ammonium elicited oxidative signals
human metabolism investigated using several vitro methods however current methodologies often expensive tedious complicated last decade combination electrochemistry mass spectrometry simpler cheaper alternative mimic human metabolism paper describes development disposable microfluidic device screen printed electrode spe monitoring phase gsh reactions proposed chip potential used primary screening tool thus complementing current vitro methods
background obesity genetically heterogeneous highly heritable although polymorphisms explain phenotype small proportion obese children investigated presence copy number variations cnvs classical genes known associated monogenic early onset obesity children methods obese caucasian children selected early onset severe obesity obesity cohort screened deletions duplications multiplex ligation dependent probe amplification reaction mlpa found one mlpa probe interfere polymorphism sim investigated association obesity phenotypic traits extended cohort children results selected subset severely obese children find cnv mlpa pomc lep lepr mcr mcr mcr genes however one sim probe located exon gave signals suggestive sim insufficiency patients polymerase chain reaction pcr analysis identified false positive result due interference single nucleotide polymorphism snp therefore investigated associations polymorphism obesity metabolic traits extended cohort found associated body mass index standard deviation score bmi sds parameters insulin metabolism blood pressure food intake conclusions modest sample severely obese children unable find cnvs well established monogenic obesity genes nevertheless found association sim obesity earlyonset type children although obesity related traits
reduced ascorbic acid oxidized ascorbate peroxidase apx ascorbate metabolism pathway present study mitochondrial apx mitapx cloned suppressed rna interference tomato via agrobacterium mediated transformation existence rna interference dna transformed plants progenies confirmed polymerase chain reaction amplification southern blotting decreased mitapx expression homozygous transgenic lines detected semi quantitative reverse transcriptase polymerase chain reaction accompanied decreasing cytosolic apx activity fold untransformed control mitochondrial apx enzyme activity rnai lines decreased wild type plants regulated mitapx expression apx enzyme activity lead fold increase ascorbic acid content tomato fruits compared wild type control apx expression apx enzyme activity found correlated increase amount ascorbic acid tomato fruits report demonstrates modulation ascorbic acid metabolic pathway rna interference method provides feasible approach improve ascorbic acid content horticultural plants suppressing genes related ascorbic acid metabolism elsevier rights reserved
haemolytic disease fetus newborn hdfn severe disease fetal red blood cells rbc destroyed maternal anti rbc igg alloantibodies hdfn often caused anti may also occur due anti recently found linked glycosylation anti skewed towards low fucosylation thereby increasing affinity igg receptor iiia iiib correlated hdfn disease severity analysed pregnant women anti alloantibodies prospective screening cohort investigated type tail glycosylation antibodies relation trigger immunisation pregnancy outcome anti show independent event led immunisation different kind glycosylation compared total igg fraction less pronounced differences compared anti high galactosylation sialylation anti correlated hdfn disease severity low anti fucosylation correlated severe fetal anaemia igg glycosylation anti rbc antibodies shaped depending antigen features influence clinical potency may therefore used predict severity identify needing treatment
rapidly proliferating cells require large amounts folate support efficient dna replication repair methylation indicating importance folate human metabolism milk products good sources vitamins produced probiotics order find suitable strains capable high folate production isolation identification lactobacilli traditional fermented milk two different provinces located west iran carried lactobacillus bacteria isolated according iso standard procedure isolated bacteria characterized phenotypically screened ability produce folate fermentation skim milk folate production selected strains two strains highest folate production selected srrna genes two strains amplified sequenced phylogenetic tree constructed sequencing results combination phenotypic biochemical properties showed strains similar lactobacillus crustorum therefore two new strains ability high folate production isolated identified could used probiotics dairy industry hence exploiting natural food grade microorganisms production nutritive dairy products possible
embryogenesis spherical inner cell mass icm proliferates confined environment blastocyst embryonic stem cells escs derived icm mimicking embryogenesis vitro mouse escs mescs often cultured hanging droplets promotes formation spheroid cells sediment aggregate owing increased physical confinement cell cell interactions contrast mescs form two dimensional monolayers flat substrates remains unclear difference organization owing lack physical confinement increased cell substrate versus cell cell interactions employing microfabricated substrates demonstrate single geometric degree physical confinement surface also initiate spherogenesis experiment computation reveal balance cell cell cell substrate interactions finely controls morphology organization mesc aggregates physical confinement thus important regulatory cue three dimensional organization morphogenesis developing cells
cowpea vigna unguiculata promiscuous grain legume capable establishing efficient symbiosis diverse symbiotic bacteria mainly slow growing rhizobial species belonging genus bradyrhizobium although much research done cowpea nodulating bacteria various countries around world little known genetic symbiotic diversity indigenous cowpea rhizobia european soils present study genetic symbiotic diversity indigenous rhizobia isolated field grown cowpea nodules three geographically different greek regions studied forty five authenticated strains subjected polyphasic approach eric pcr based fingerprinting analysis grouped isolates seven groups representative strains group analyzed analysis rrs gene showed strains belong different species genus bradyrhizobium analysis igs region showed strains geographic region characterized distinct igs types may represent novel phylogenetic lineages closely related type species bradyrhizobium pachyrhizi bradyrhizobium ferriligrd bradyrhizobium liaoningense mlsa analysis three housekeeping genes reca glnll gyrb showed close relatedness strains pachyrhizi pac liaoningense usda confirmed liaoningense related isolate vuep may constitute novel species within bradyrhizobium moreover symbiotic gene phylogenies based nodc nifh genes showed pachyrhizi related isolates belonged symbiovar vignae whereas liaoningense related isolates may represent novel symbiovar elsevier gmbh rights reserved
dna methyltransferases dnmts promising epigenetic targets development novel drugs especially neurodegenerative disorders recent years increased interest small molecules cross blood brain barrier treatment neurodegenerative diseases therefore comparing neuronal differentiative effects natural compound curcumin synthetic small molecule aim study effects curcumin neuronal differentiation neurite outgrowth investigated adh cell line first nontoxic concentration determined wst assay subsequently cells treated curcumin alone combination nerve growth factor ngf cell differentiations evaluated real time cell analyzer system neurite outgrowth determined morphologically shown immunofluorescence staining anti beta iii tubulin antibody adh cells also growth associated protein gap tubulin iii mrna expression levels associated neurite outgrowth promotion determined real time polymerase chain reaction pcr according results curcumin significantly induced neurite outgrowth adh cells ngf curcumin ngf combination increased cell differentiations total neurite lengths curcumin alone ngf combination groups strikingly curcumin ngf combination upregulated gap tubulin mrna expression levels excessively conclusion curcumin found effective neuronal differentiation neurite outgrowth adh cells combination ngf therefore natural dnmt inhibitors curcumin novel approach neurodegenerative disorders treatment
gas chromatographic positive chemical ionisation tandem mass spectrometric pci method simultaneous determination oxidative metabolites monoterpenoid hydrocarbons alpha pinene limonene delta carene carene human urine developed tested monoterpene biomonitoring general population method involves enzymatic cleavage glucuronides followed solid supported liquid liquid extraction derivatisation using two step reaction bis trimethylsilyl trifluoroacetamide trimethylsilyl imidazole method proved sensitive reliable detection limits ranging contrast frequent distinct quantities limonene diol stereoisomer could detected expected metabolite carene caren detected samples metabolites detected almost urine samples procedure enables first time analysis trace levels broad spectrum mono bicyclic monoterpenoid metabolites alcohols diols carboxylic acids human urine analytical procedure powerful tool population studies well discovery human metabolism toxicokinetics monoterpenes elsevier rights reserved
transcriptional enhancers dna regulatory elements bound transcription factors act positively regulate expression nearby distally located target genes enhancers many features discovered using genomic analyses recent studies shown active enhancers recruit rna polymerase pol transcribed producing enhancer rnas ernas gro seq method identifying location orientation actively transcribing rna polymerases across genome powerful approach monitoring nascent enhancer transcription furthermore unique pattern enhancer transcription used identify enhancers absence information underlying transcription factors describe computational approaches required identify analyze active enhancers using gro seq data including data pre processing alignment transcript calling addition describe protocols computational pipelines mining gro seq data identify active enhancers well known transcription factor binding sites transcribed furthermore discuss approaches integrating gro seq based enhancer data genomic data including target gene expression function finally describe molecular biology assays used confirm explore function enhancers identified using genomic assays together approaches allow user identify explore features biological functions new cell type specific enhancers
investigated physicochemical properties size shape elemental composition endotoxin size resolved particulate matter collected indoor corridor environments classrooms comparative hazard profiling conducted using human microvascular endothelial cells hmvec oxidative stress dependent cytotoxicity responses assessed using quantitative reverse transcriptase polymerase chain reaction pcr high content screening hcs disruption monolayer cell integrity assessed using fluorescence microscopy transwell assay scanning electron microscopy sem coupled energy dispersive ray spectroscopy edx analysis showed differences morphology elemental composition different sizes origins total mass collected indoor environment lower comparison collected corridor endotoxin content substantially higher indoor ninefold higher endotoxin level indoor ability induce oxidative stress mediated cytotoxicity leakiness cell monolayer higher indoor compared collected corridor conclusion comparative analysis suggested indoor relatively hazardous endothelial system possibly higher endotoxin content
wood frogs rana sylvatica highly susceptible infection frog virus ranavirus iridoviridae cause mass mortality wild populations elucidate pathogenesis infection wood frogs wild caught adults acclimated captivity inoculated orally fatal dose pfu frog euthanized days postinfection dpi mild lesions occurred sporadically skin petechiae bone marrow necrosis first dpi severe lesions occurred weeks postinfection consisted necrosis medullary extramedullary hematopoietic tissue lymphoid tissue spleen throughout body epithelium skin mucosae renal tubules viral dna first detected polymerase chain reaction liver dpi dpi viscera tested liver kidney spleen skin feces positive immunohistochemistry ihc first detected viral antigen small areas devoid histologic lesions oral mucosa lung colon dpi dpi ihc labeling viral antigen associated necrosis found multiple tissues based ihc staining intensity lesion severity skin oral gastrointestinal epithelium renal tubular epithelium important sites viral replication shedding suggesting direct contact skin fecal oral contamination effective routes transmission skin tissue oral cloacal swabs may appropriate antemortem diagnostic samples late stages disease week postinfection poor samples detect infection clinically healthy frogs
background pertussis infection severe unvaccinated infants case control study conducted investigate potential role breast feeding protecting young unvaccinated infants pertussis methods hospitalized infants months age positive real time polymerase chain reaction pertussis nasopharyngeal aspirate enrolled cases healthy controls enrolled among patients admitted ultrasound screening vaccinated infants excluded socio demographic clinical feeding information collected effect breastfeeding pertussis investigated multivariable analysis breast milk blood samples obtained mothers patients iga bacterial binding bordetella pertussis bacteria tested breast milk igg pertussis toxin tested serum results enrolled patients cases controls exclusive breastfeeding associated pertussis compared partial breastfeeding artificial feeding odds ratio confidence interval children siblings higher risk pertussis odds ratio iga pertussis antigens higher cases iga anti median optical density compared controls iga anti median optical density though bacterial binding pertussis measured breast milk higher cases median compared controls median bacterial binding pertussis low compared pathogens igg titers higher mothers cases correlation found serum igg breast milk iga conclusion breastfeeding remains mainstay prevention numerous diseases though seem play role pertussis alternative strategies protect unvaccinated infants pertussis considered
prenyltransferases play key role isoprenoid biosynthesis cdna encoding prenyltransferase isolated cotton aphid aphis gossypii consists nucleotides encodes protein amino acids agipps subsequent sequencing agipps genomic dna resulted one sequence southern blotting analysis indicated single ipps gene exists cotton aphid real time quantitative pcr showed agipps transcripts mainly present corpora allatum small quantity could detected tissues corpora allatum transcript abundance changed alternative manner different life stages high expression observed embryos second forth instar nymphs adults low level detected first third instars functional expression activity assay product analysis revealed mature form agipps agipps could efficiently convert labeled isopentenyl diphosphate presence dimethylallyl diphosphate geranyl diphosphate gpp farnesyl diphosphate fpp data suggested unlike green peach aphid pea aphid cotton aphid appears contain single ipps dual fpp gpp synthase activity elsevier ltd rights reserved
characterizing immune response pneumococcal proteins critical understanding bacterium epidemiology vaccinology probing custom designed proteome microarray sera healthy adults revealed continuous distribution igg affinities potential antigens species wide pangenome reproducibly elevated igg binding elicited antibody binding targets abts included variants diverse pneumococcal surface proteins pspa pspc zinc metalloprotease zmpa zmpb proteins functional analysis found abts enriched inmotifs secretion cell surface association extensive representation cell wall synthesis machinery adhesins transporter solute binding proteins degradative enzymes abts associated stronger evidence evolving positive selection although varied functional categories rates diversification recombination particularly rapid variation observed immunogenic accessory loci including phage protein phase variable glycosyltransferase ubiquitous among diverse set genomic islands encoding serine rich psrp glycoprotein nevertheless many antigens conserved core genome strains antigenic profiles generally stable strong evidence found epistasis antigens driving population dynamics redundancy functionally similar accessory abts age stratification antigen profiles results highlight paradox substantial variation observed subset epitopes result may indicate interactions immunoglobulins abts clear pneumococcal colonization acquired immunity pneumococci accumulation individually weak responses abts evolving different levels functional constraint
article outlines major developments knowledge human metabolism ethanol results large number controlled experiments aimed measuring rate ethanol elimination blood reported factors influence rate ethanol elimination blood amount ethanol ingested drinking habits subjects effect food taken together drinking investigated slowest rate ethanol disappearance observed healthy male subject ingested ethanol body weight overnight fast beta slope fastest rate ethanol disappearance observed male chronic alcoholic detoxification beta slope four fold difference rate ethanol disposal considered pharmacokinetics ethanol become issue drinking driving trials example retrograde estimations attempted
background functionalized nanoparticles nps one promising tool detecting specific molecular targets combine molecular biology nanotechnology aiming modern imaging aimed ligand directed delivery suitable target biomarker detect early pancreatic ductal adenocarcinoma pdac promising targets galectins gal due strong expression pdac cells occurrence early stages cancer precursor lesions adjacent normal tissues results molecular probes long peptides derived human tissue plasminogen activator selected binding partners galectins affinity constants synthesized peptides gal determined microscale thermophoresis long peptide lactose functionalized serine revealed strongest binding properties gal fold higher comparison native protein showed additional strong binding gal gal also expressed pdac peptide selected vector moiety linked covalently onto surface biodegradable iron oxide nanoparticles nps particular doped maghemite nps mag promising contrast agent magnetic resonance imaging mri selected magnetic core coated different biocompatible polymers chitosan mag chitosan nps polylactic glycolic acid plga obtaining polymeric nanoparticles mag pnps already approved drug delivery applications binding efficacy vectorized nps determined exposure different pancreatic cell lines assessed flow cytometry vivo targeting imaging efficacy vectorized nps evaluated applying murine pancreatic tumor models assessed magnetic resonance imaging mri vectorized nps well protease activated nps outer shell decoration mag pnps peg regacp peg tpa peplac showed clearly detectable drop subcutaneous orthotopic tumor staining intensity indicating considerable uptake injected nps post mortem deposition tumors organs confirmed staining histopathology tissue sections conclusions targeted nps indicate fast enhanced deposition nps murine tumor models mag pnps peg regacp peg tpa peplac interlocking steps strategy nps delivery deposition pancreatic tumor promising
major constituent cell membranes coated surface phosphatidylcholine coated magnetic nanoparticles mnps shown low toxicity good dispersion widely used biomedical applications drug delivery magnetic resource imaging hyperthermia however effects mnps vivo magnetic field exposure evaluated poorly present study focused interference lipid metabolism mnps static magnetic fields smfs caenorhabditis elegans elegans mnps accumulated intestine nematodes fatty acids accumulated content lipofuscin decreased elegans exposed either mnps smf decrease worms mnps smf exposure however presence smf lipid content greatly decreased elegans mnps smf exposure groups constituents long chain fatty acids polyunsaturated fatty acids analyzed gas chromatography significantly decreased mnps treated worms smf consistent mrna expression fatty acid metabolism genes including elo let fat results indicated lipid metabolism interfered mnps via accelerated beta oxidation changed gene expression elegans smf
among athletes coaches common perception high training loads competitions applied chronically inadequate nutritional control recovery periods may reduce immune resistance increasing susceptibility infection episodes mainly upper respiratory tract infection urti sense study focused reviewing interactions immunological parameters overtraining syndrome specifically team sports considering intermittent nature thus review national international journals related topic held correlations exercise immune system susceptibility urti evaluated mainly individual endurance sports compared team sports modulations leukocytes throughout season totalization training loads competitions analyzed specifically neutrophils monocytes possibly related tissue repair processes incidence urti modulations related lymphocytes seem directly related incidence urti moreover understanding proposed markers including immunological markers association performance indicators control training appears promising avenue clinical diagnosis athlete immune status prevention overtraining syndrome search unique marker overtraining
optogenetics fast developing science combines gene biology optics new research fields neuroscience cell biology introduction short literature update optogenetic tools given emphasis rhodopsin flavin based optogenetic tools bluf coupled photo activated adenylyl cyclases pacs discussed bluf blue light sensor using fad primary photo dynamics bluf domains described bluf domain photocycle scheme bluf domain reaction coordinate scheme presented adenylyl cyclase action catalytic atp camp cellular second messenger conversion described light induced cyclase activity bluf coupled photoactivated adenylyl cyclases bluf pacs analyzed optogenetic bluf pac applications shortly reviewed elsevier ltd rights reserved
aims hepatoma cell line hepg used model system detect toll like receptor tlr expression hepatocytes examine antiviral effect hepatitis virus hbv methods results toll like receptor expression detected hepg cells pcr tlrs strongly expressed hepg cells stimulated specific ligands interferon ifn response evaluated poststimulation western blotting signal transduction activators transcription furthermore hepg cells transiently transfected wild type hbv fold length plasmid treated specific ligands indicated times replication hbv dna transcription hbv rna intermediate expression hbv antigens respectively detected southern blotting real time pcr elisa western blotting activation different tlrs induced antiviral effects hbv varying degrees conclusions tlrs strongly expressed hepg cells could stimulated specific ligands activation tlrs induced apparent production antiviral cytokines ifn alpha beta inhibited hbv lifecycle hepatocyte cell model significance impact study expression tlrs hepatocytes may related local immunity liver participate outcome viral hepatitis
paper present mechanistic model integrates subneuronal structures namely ion channels membrane fatty acids lipid rafts proteins cytoskeleton dynamic system finely tuned healthy brain also argue subtle changes composition membrane fatty acids may lead stream effects causing dysregulation membrane cytoskeleton interface exquisite sensitivity minor changes known occur physical systems undergoing phase transitions simplest studied called ising model exhibits phase transition finite temperature ordered disordered state dimensional space propose model context neuronal dynamics hypothesize may involve quantum degrees freedom dependent upon variation membrane domains associated ion channels microtubules finally provide link physical characteristics dynamical mechanism psychiatric disorders major depression antidepressant action
pancreatic cancer represents one aggressive types malignancy due high resistance toward clinically available treatments presence pancreatic cancer stem like cells cscs attributed intrinsically high resistance highly metastatic potential disease identified isolated pancreatic cscs using side population method human pancreatic cancer cell line panc compared non panc cells genetically panc cells exhibited csc properties including enhanced self renewal ability increased metastatic potential resistance toward gemcitabine treatment cancer stem like phenotypes supported enhanced expression abcg oct traditional plant derived antioxidant garcinol implicated anticancer properties found garcinol treatment panc cells significantly suppressed stem like properties panc cells metastatic potential downregulating expression mcl ezh abcg gli notch importantly garcinol treatment led upregulation several tumor suppressor micrornas mir increased garcinol treatment found target downregulate notch thus panc cells may serve model studying drug resistant pancreatic cscs garcinol potential antagonist pancreatic cscs international union biochemistry molecular biology inc
ectomycorrhizal fungi form symbiotic relationships roots tree species support increased forest health productivity ectomycorrhizal fungus laccaria laccata successfully transformed agrobacterium tumefaciens mediated transformation atmt observed transformation efficiency assessed transformants exhibiting mitotic stability five passages culture medium without selective agent amplification dna fragment corresponding hygromycin phosphotransferase hph gene southern blotting analysis showed assessed transformants integrated dna genome confirming success atmt procedure single dna integrations detected five eight transformants assessed southern blotting hybridization pattern confirmed integration occurred randomly genome fungus development efficient atmt system allows integration single dna copies laccata genome makes functional genetic studies ectomycorrhizal fungus feasible
protein nitrosylation ubiquitous post translational modification almost biological systems however function stem cell biology far incompletely understood demonstrated peroxiredoxin prdx nitrosylation involved cardiomyocyte differentiation mouse embryonic stem cells induced nitrosoglutathione gsno found temporary gsno exposure could promote cell derived cardiomyogenesis using stable isotope labeling amino acids cell culture silac based proteomics approach coupled biotin switch technique total nitrosylated proteins identified specifically one antioxidant enzymes prdx abundantly nitrosylated temporarily reduced antioxidant activity causing transient endogenous hydrogen peroxide accumulation subsequent box binding protein phosphatidylinositol kinase pathway activation present study reveals mechanism gsno favors cardiomyocyte differentiation prdx nitrosylation could potent strategy affect pluripotent stem cell derived cardiomyogenesis elsevier inc rights reserved
mucosal surfaces line body cavities provide interaction surface commensal pathogenic microbiota host barrier function mucosal layer largely maintained gel forming mucin proteins secreted goblet cells addition mucosal epithelial cells express cell bound mucins barrier signaling functions family transmembrane mucins consists diverse members share characteristics highly glycosylated extracellular mucin domains inhibit invasion pathogenic bacteria form tight mesh structure protects cells harmful conditions intracellular tails transmembrane mucins phosphorylated connect signaling pathways regulate inflammation cell cell interactions differentiation apoptosis transmembrane mucins play important roles preventing infection mucosal surfaces also nowned contributions development progression metastasis adenocarcinomas general transmembrane mucins seem evolved monitor repair damaged epithelia functions highjacked cancer cells yield survival advantage review presents overview current knowledge functions transmembrane mucins inflammatory processes carcinogenesis order better understand diverse functions multifunctional proteins karger basel
dna vaccines widely used animal models various viral infections convincing many infectious diseases especially bacterial disease aquaculture interleukin one cxc chemokines immunological role adjuvant potential proved mammals rarely reported fish species study recombination plasmid pcdna pcil conducted capacity molecular adjuvant explored several aspects injecting dna vaccine encoding enolase pceno streptococcus iniae infection channel catfish results suggested injection pcil dna vaccine increased innate immunity specific antibody levels well increased immune related genes involving pro inflammatory response humoral cellular immunity moreover pcil enhanced immunoprotection pceno relative percent survival rps iniae infection week post vaccination significantly higher rps pceno pcil group compared pceno alone challenge test weeks taken together results indicate pcil molecular adjuvant injected dna vaccine improves immunoprotection also maintains long period immunity channel catfish iniae infection study signifies holds promise serve potential adjuvant dna vaccines bacterial infections long time
salmonella major food borne pathogen humans cause local systemic disease animals therefore rapid reliable methods detect poultry associated salmonella serotypes necessary efficient control salmonella poultry present study aimed develop real time multiplex pcr mqpcr method simultaneously detect differentiate salmonella poultry associated serotypes including salmonella enteritidis salmonella typhimurium salmonella pullorum salmonella gallinarum mqpcr method designed using four specific primer pairs probes detection salmonella including enteritidis typhimurium pullorum gallinarum additionally novel taqman based mqpcr method combined propidium monoazide pma treatment developed simultaneous quantification viable cells salmonella four salmonella serotypes rinse water chicken carcasses mqpcr assay specifically detected salmonella enteritidis typhimurium pullorum gallinarum showing sensitivity specificity optimized pma mqpcr assay could detect live salmonella cfu reaction without enrichment live dead cell mixtures spiked rinse water chicken carcasses procedure detecting live salmonella required less complete pma taqman based mqpcr technique facilitates accurate rapid monitoring contamination viable salmonella also assay enables simultaneous identification enteritidis typhimurium pullorum gallinarum rinse water chicken carcasses assay developed study useful diagnostic laboratories improving salmonella control poultry poultry products
goblet cells within conjunctival epithelium specialized cells secrete mucins onto surface eye recent research demonstrated new characteristics cells including factors influencing differentiation gene products functions ocular surface following review summarizes newly discovered aspects role spdef member ets transcription factor family conjunctival goblet cell differentiation newly discovered goblet cell products including claudin wnt inhibitor frzb transmembrane mucin muc current concepts conjunctival goblet cell function including debris removal immune surveillance reviewed changes goblet cell population ocular surface diseases major remaining questions regarding conjunctival cell biology discussed elsevier ltd rights reserved
replacement beef buffalo vice versa frequent global markets authentication challenging processed foods due fragmentation biomarkers including dna shortening target sequences use two target sites might ameliorate assay reliability highly unlikely targets lost food processing first time report tetraplex polymerase chain reaction pcr assay targeting two different dna regions beef buffalo mitochondrial genes discriminate beef buffalo processed foods targets stable boiling autoclaving microwave cooking conditions survey malaysian markets revealed beef curries contained buffalo buffalo beef burgers assay detected dna meat admixed burger products elsevier ltd rights reserved
background babesiosis socioeconomically important tick borne disease animals including humans caused haemoprotozoan parasites severity babesiosis relates host parasite factors particularly virulence pathogenicity although babesia bovis particularly pathogenic species cattle species babesia ruminants limited pathogenicity instance operational taxonomic unit babesia xinjiang abbreviated sheep china substantially less virulent pathogenic bovis cattle although reason distinctiveness presently unknown possible reduced ability adhere cells evade suppress immune responses might relate particular proteins variant erythrocyte surface antigens vesas results sequenced annotated nuclear draft genome compared bovis bigemina synteny analysis also investigated genetic relationship selected babesia species related apicomplexans genomic datasets available explored vesa complement conclusions availability genome provides unique opportunities elucidate aspects molecular biology biochemistry physiology explore reason limited virulence apparent ability evade immune attack host animal moreover present genomic resource vitro culture system raises prospect establishing functional genomic platform explore essential genes new intervention targets babesiosis
imprinted genes control fetal placental growth mice rare human syndromes role genes sporadic intrauterine growth restriction iugr less well studied measured ratio mrna maternally expressed imprinted gene phlda paternally expressed imprinted gene mest northern blotting iugr associated placentae non iugr placentae found increase phlda mest mrna ratio iugr altered expression phlda mest accompanied changes dna methylation within imprinting centers immunohistochemistry showed phlda protein appropriately restricted villous intermediate cytotrophoblast iugr placentae next genome wide survey mrna expression iugr placentae maternal vascular perfusion compared non iugr placentae using affymetrix microarrays series six imprinted genes differentially expressed anova benjamini hochberg false discovery rate increased expression phlda decreased expression mest meg gatm gnas plagl iugr placentae lower significance found igf mrna decreased cdknc mrna increased iugr cases confirmed significant reduction meg non translated rna iugr placentae northern blotting addition imprinted genes microarray data highlighted non imprinted genes acting endocrine signaling lep crh hpgd inhba tissue growth igf immune modulation indo psg family genes oxidative metabolism glrx vascular function agtr dscr metabolite transport slc family solute carriers differentially expressed iugr non iugr placentae
cell possesses remarkable ability perceive process chemical physical stimuli turn modulate cellular behavior one great wonders nanotechnology enables fabrication tools length scale biomolecules thereby providing unique handle characterizing controlling basic cellular processes owing tunable size shape dependent physical properties biocompatibility facile surface modification gold nanoparticles become potentially powerful tools probe fundamental aspects cell biology consequently innovative approaches based gold nanoparticles development toward manipulation cell function improvement techniques currently used biomedicine biotechnology review provide overview recent applications based gold nanoparticles nanostructured materials modulation cellular activity behavior mediated interactions cell surface receptors elsevier ltd rights reserved
aberrant expression micrornas mirnas processing defects biogenesis pathway widespread phenomenon tumors conveying great importance analysis mirna expression regulation biogenesis gain knowledge role cancer besides drosha dicer argonaute proteins key players mirna processing addition role components rna induced silencing complex risc executing target silencing argonautes mediate posttranscriptional regulation mirna maturation creating additional intermediate processing step ago cleaved precursor mirna pre mirna enhancing production stability mature mirnas describe detection mirna levels northern blotting identification end mirnas precursor cloning accentuate two many roles argonaute proteins addition describe method optimize rnai experiments increasing efficacy specificity target silencing via ago cotransfection
osteosarcoma well recognized bimodal distribution first peak adolescence another elderly age group elderly patients different clinical features poorer prognosis compared adolescents better understand biological features osteosarcoma elderly population established new human osteosarcoma cell line year old man primary chondroblastic osteosarcoma months continuous culture vitro passages immortalized cell line chos established cell line well characterized cytogenetic biomarker functional histological analyses chos cells exhibited spindle shaped morphology doubling time cytogenetic analysis chos cells revealed loss chromosome gain chromosome quantitative real time polymerase chain reaction pcr western blotting immunofluorescence revealed expression chondroblastic mesenchymal tumor metastasis markers chos cells compared osteosarcoma cell line chos cells found sensitive cisplatin doxorubicin resistant methotrexate cell line highly tumorigenic maintained histological characteristics invasive nature original tumor furthermore immunohistochemical analysis xenografts metastases found express collagen aggrecan vimentin resembled original tumor cells results indicate potential chos cell line serve useful tool studies molecular biology osteosarcoma especially elderly patients orthopaedic research society published wiley periodicals inc orthop res
aeromonas media opportunistic pathogen human animals mainly found aquatic habitats noted significant genomic phenotypic heterogeneities aimed better understand population structure diversity strains currently affiliated media related species rivipollensis forty one strains included population study integrating multilocus genetics phylogenetics comparative genomics well phenotypics lifestyle evolutionary features sixteen gene based multilocus phylogeny delineated three clades clades corresponded different genomic groups genomospecies defined phylogenomic metrics ani average nucleotide identity isddh silico dna dna hybridization whole genome sequences lactate utilization cefoxitin susceptibility nucleotide signatures ribosomal multi operon diversity differences relative effect recombination mutation evolution mode distinguished two species aeromonas media aeromonas rivipollensis description two species emended accordingly genome metrics comparative genomics suggested third clade distinct genomospecies beside species delineation genetic genomic data analysis provided comprehensive knowledge cladogenesis determinants root inside media species complex among aeromonads particular lifestyles phenotypes well major differences evolution modes may represent putative factors associated lineage emergence speciation within media complex finally integrative populational approach presented study considered broadly order conciliate delineation taxonomic species population structure bacterial genera organized species complexes
current dna extraction protocols genomic dna botrytis cinerea almost always start mycelium reduced powder liquid mortar makes application large number samples slow cumbersome present adaptation existing method moller nucleic acids res initial steps modified including homogenization fungus sand aid common household drill method allows processing large number samples much shorter times generates average dna per sample sufficient quality use pcr southern blotting
marsupials born immunologically premature relying cells molecules maternal milk immune protection immunoglobulin complement proteins identified marsupial milk expression specific complement proteins remains largely unexplored report partial cdna sequences two complement activating proteins cfp masp liver tissues red tailed phascogale phascogale calura conservation functionally relevant motifs identified translated cdna sequences phascogale cfp masp eutherian homologues gene expression representative molecules major complement pathways also investigated whole body tissues day old animals liver tissues day month old animals average complement expression whole bodies liver tissues cfp masp increased significantly juveniles compared pouch young presumably due maturation young complement system comparing expression liver tissues found average cfp expression higher pouch young compared juveniles results still statistically similar average expression tissues masp average complement expression significantly decreased animals aged adulthood elsevier ltd rights reserved
background archaea synthesize glycerol based membrane lipids unique stereochemistry utilizing distinct enzymology results structure glycerol phosphate dehydrogenase gpdh first step archaeal lipid synthesis determined conclusion gpdh member iron dependent alcohol dehydrogenase dehydroquinate synthase superfamily significance data contribute understanding origins cellular lipids divergence archaea bacteria one critical events origins cellular life development lipid membranes archaea use isoprenoid chains linked via ether bonds glycerol phosphate whereas bacteria eukaryotes use fatty acids attached via ester bonds enantiomeric glycerol phosphate nad dependent dehydrogenase gpdh forms proposed played crucial role speciation archaea present knowledge first structures archaeal gpdh hyperthermophilic methanogen methanocaldococcus jannaschii bound substrate dihydroxyacetone phosphate product nadph cofactor also biochemically characterized enzyme respect optimum cation specificity kinetic parameters dihydroxyacetone phosphate nad structures provide key evidence reaction mechanism stereospecific addition nad based pro hydrogen transfer coordination cofactor catalysis structure based phylogenetic analyses also provide insight origins gpdh
killer cell immunoglobulin like receptors kirs components two fundamental biological systems essential human health survival first contribute host immune responses innate adaptive expression natural killer cells cells second kir play key role regulating placentation hence reproductive success analogous diversity human leucocyte antigen class ligands kir extremely polymorphic review describe recent developments fuelled methodological advances helping decipher kir system terms haplotypes polymorphisms expression patterns ligand interactions developments delivering deeper insight relevance kir immune system function evolution disease
background serogroup meningococcal disease caused university outbreaks neisseria meningitidis transmitted via asymptomatic nasopharyngeal carriage menb fhbp factor binding protein serogroup meningococcal menb vaccine used control college outbreak investigated menb fhbp impact meningococcal carriage methods four cross sectional surveys conducted conjunction menb fhbp vaccination campaigns questionnaires oropharyngeal swabs collected students specimens evaluated using culture slide agglutination real time polymerase chain reaction pcr whole genome sequencing adjusted prevalence ratios aprs calculated using generalized estimating equations results survey participants carried meningococcal bacteria carried serogroup pcr outbreak strain detected initial survey student carried second third surveys carriage reduction observed time menb fhbp doses total students participated multiple surveys remained noncarriers cleared carriage remained carriers acquired carriage ten students acquired serogroup carriage menb fhbp dose doses doses smoking apr confidence interval male sex apr associated increased meningococcal carriage conclusions carriage prevalence campus remained stable suggesting menb fhbp rapidly reduce meningococcal carriage prevent serogroup carriage acquisition reinforces need high vaccination coverage protect vaccinated individuals chemoprophylaxis close contacts outbreaks
activated cells increase cell behaviour autoimmune disease infections means cytokine production antigen presentation functional studies experimental autoimmune encephalomyelitis eae indicate cell deficiencies lack leads poor prognosis hypothesised cells play role tuberculosis evaluated cell mrna expression using real time pcr healthy community controls individuals lung diseases newly diagnosed untreated pulmonary patients three different time points diagnosis month treatment show faslg ilra expression lower cells cases compared healthy controls changes expression levels may due reduced activation cells cases diagnosis month treatment significant increase expression april ilra cases furthermore months treatment april faslg ilra upregulated cells cases increase expression april suggests may restored activation cells following anti treatment upregulation faslg ilra indicates cells expressing regulatory genes may play important role protective immunity infection results show increased activation cells present following successful treatment expression faslg ilra could potentially utilised signature monitor treatment response
white spot syndrome virus wssv severe viral pathogen crustacean aquaculture industry worldwide recently serious wssv outbreaks caused catastrophic losses chinese mitten crab eriocheir sinensis jiangsu province eastern china however date little known infection mechanism new natural host study aimed reveal temporal spatial dynamics wssv sinensis slow viral growth early stage infection light infection stage hpi exponential growth stage followed logarithmic phase hpi viral growth curve ended plateau phase hpi demonstrated consistent high level viral load accompanied heavy crab mortality viral load increased time progressed similar growth curves however different degrees viral copy numbers tissues different time intervals analysed using one way analysis variance anova showed significant differences tissues time points infection detectable early hpi tissues screened severity infection found maximum gill pleopods could recommended diagnostic testing study might provide important data analyse theoretically interaction wssv host
transcription factor activator protein super family known modulate expression array genes development many cancers considered important target modern therapeutics role development human oral cancers still poorly understood oral cancer one common cancers india south east asia studied activation expression pattern family proteins mrna different stages oral carcinogenesis get shift assay western blotting immunohistochemistry northern blotting used assess binding activity expression pattern family jun junb jund fos fosb fra fra proteins mrna transcripts total fresh oral tissue specimens comprising precancer cancer healthy control constitutive activation concomitant upregulated expression majority family proteins mrna observed cancer cases interestingly almost precancerous cases showed jund homodimers whereas fos jund prevalent complex found cancer tissues overexpression egfr mrna kappa homodimer formation together overexpression perk fos proteins study suggests interesting cross talk kappa pathways oral cancers thus study demonstrates differential expression activation super family proteins relation severity lesion crucial role human oral carcinogenesis
two plasmids cloned paulownia witches broom phytoplasma nanyang strain pawbny southern blotting using ppawbnyorf probe confirmed existence two plasmids plasmid designated ppawbny nucleotide content mol contained six putative open reading frames orfs plasmid designated ppawbny nucleotide content mol contained five putative orfs showed similarity orfs ppawbny two plasmids contained series tandem repeats encoded replication associated protein repa single stranded dna binding protein ssb necessary replication plasmids seven putative proteins encoded two plasmids predicted contain one hydrophobic transmembrane domains respectively presumably localised membrane orf ppawbny partially cloned recombinant protein tag expressed escherichia coli fusion protein used immunisation polyclonal antiserum orf protein detected native expression orf protein western blot analysis infected healthy plants
microchimerism generally shown protect cancer gilmore exp hematol mechanism occurs area intense study may lead new cancer treatments leading theory microchimeric cells perform immune surveillance directly fighting cancerous cells also act stem cells repairing damaged tissue khosrotehrani jama however conflicting evidence support theory several small studies found microchimeric cells tumor tissue gadi breast cancer res treat cirello int cancer another study contradicted findings showing microchimeric cells clustered around tumor tissue donoghue reprod biomed online date designed largest broadest study investigate question whether microchimeric cells really cluster tumor tissue analyzed samples broad range cancer types using pcr male chromosome marker tspy identified samples microchimerism rate confidence interval five samples confirmed using fluorescence situ hybridization rate microchimerism lowest reported study low percentage microchimerism observed broad study suggests microchimeric cells invade tumors fight neoplasm
male breast carcinomas mbcs rare neoplasms account male cancers still new cases mcb diagnosed annually united states rarity data regarding etiology risk factors diagnosis management prognosis mbc limited mbc shares similarities female breast carcinoma fbc review address important clinical histopathological immunohistochemical molecular features genetics management prognosis mbc
aims characterise carbapenemase producing enterobacteriaceae cre isolated singapore methods carbapenemase genes flanking regions amplified sequenced pcr isolates typed pulsed field gel electrophoresis multi locus sequence typing plasmids bearing carbapenemase genes sized nuclease digestion southern blotting dna hybridisation appropriate probes transfer plasmids attempted conjugation transformation successfully transferred plasmids characterised polymerase chain reaction pcr replicon typing restriction digestion results isolates klebsiella pneumoniae escherichia coli enterobacter cloacae citrobacter species carried variety carbapenemase genes including bla imp bla imp bla ndm bla ndm bla oxa bla oxa bla kpc apart pneumoniae bla oxa pneumoniae bla ndm isolates clonal however appears spread plasmids bla imp bla ndm bla kpc bla oxa conclusions number isolates cre increased singapore especially since diversity carbapenemase types reflects geographical proximity countries cre
dna mismatch repair mmr gene mutl homolog mlh critical maintenance genomic integrity methylation mlh gene promoter identified prognostic marker numerous types cancer including glioblastoma colorectal ovarian gastric cancer present study aimed determine whether mlh promoter methylation associated survival male patients esophageal squamous cell carcinoma escc formalin fixed paraffin embedded escc tissues collected male patients mlh promoter methylation assessed using methylation specific polymerase chain reaction approach kaplan meier survival curves log rank tests used evaluate association mlh promoter methylation overall survival patients escc cox regression analysis used obtain crude multivariate hazard ratios confidence intervals present study revealed mlh promoter methylation observed male patients escc kaplan meier survival analysis demonstrated mlh promoter hypermethylation significantly associated poorer prognosis patients escc multivariate survival analysis revealed mlh promoter hypermethylation independent predictor poor male patients escc therefore mlh promoter hypermethylation may predictor prognosis male patients escc
dalian sea cucumber yantai sea cucumber weihai sea cucumber belong apostichopus japonicus protected geographical indications china based high nutritional values medical propertys samples including dalian sea cucumbers samples liaoning province yantai sea cucumbers samples weihai sea cucumbers samples shandong province individually collected designated geographical sea areas genetic relationships dna polymorphisms evaluated random amplified polymorphic dna technology gene segments sequencing rapd dendrogram showed genetic diversity three types sea cucumbers rich neighbor joining tree shows genetic relationship samples adjacent sea areas closer demonstrates gene characteristics sea cucumbers different sea areas obvious genetic diversity analysis rapd pcr used rapid method geographical discrimination
recent evidence suggests prl phosphatases may multifunctional enzymes diverse roles variety tissue cell types northern blotting previously shown widespread expression transcripts however little known cell type specific expression either gene especially human tissues therefore investigated expression patterns prl genes multiple normal adult human tissues using situ hybridization although transcripts ubiquitously expressed exhibited strikingly different patterns expression prl expressed heavily almost every tissue cell type examined whereas prl expression levels varied considerably tissue types individuals widespread expression prl multiple organ systems suggests important functional role enzymes normal tissue homeostasis addition variable patterns expression genes may provide distinct activities tissue cell type
aimsthe aim study develop evaluate real time pcr technology microbiological control methods examine individualized cell therapeutics emerging class pharmaceutical formulations methods resultsoligonucleotide primers hybridization probe bacterial detection targeting srrna gene adapted based nadkarni etal microbiology detection yeast moulds primers probe designed conserved sequences srrna gene study real time pcr assays tested genomic dna escherichia coli candida albicans assess efficiency linear dynamic range successful establishment robust real time pcrs applicability assays evaluated extracting microbial target dna cell based preparations different commercial dna extraction methods compared identifying magna pure dna isolation kit iii method choice sensitivity examined different strains detection limit cfu per sample containing similar mammalian cells per achieved conclusionsthis study reports successful establishment two qualitative real time pcr assays enabling general broad range detection microbial contaminants cell based sample matrix significance impact studyindividualized cell therapeutics tend short shelf life due lengthy incubation periods compendial testing according current pharmacopoeial guidelines may applicable report suitable alternative method upon future microbiological quality control methods products could based however implement valid rapid microbiological testing methods using real time pcr technology challenges need addressed
background tumour initiating cells tics account chemoresistance tumour recurrence metastasis therefore represent major problem tumour therapy however strategies address tics limited recent studies indicate cdk promising target anti cancer therapy cdk recently associated epithelial mesenchymal transition emt however role cdk tics described yet methods expression cdk human cancer tissue analysed staining human tissue microarray tma functional effects cdk overexpression genetic knockdown sirna shrna pharmacologic inhibition small molecule roscovitine tested migration invasion cell death tumorsphere assays tumour establishment vivo mechanistic studies molecular biology methods applied results fact pin novel function cdk tics knockdown pharmacological inhibition cdk impaired tumorsphere formation reduced tumour establishment vivo conversely cdk overexpression promoted tumorsphere formation line increased expression cdk human breast cancer tissues shown staining human tma order understand cdk inhibition affects tumorsphere formation identify role cdk detachment induced cell death cdk inhibition induced apoptosis tumorspheres stabilizing transcription factor foxo results increased levels pro apoptotic protein bim conclusions summary study elucidates cdk foxo bim pathway cell death tumorspheres suggests cdk potential target address tics
backgroundweeds greater constraint crop production animal pests pathogens pre emergence herbicides crucial many cropping systems control weeds evolved resistance selective post emergence herbicides study assessed potential evolve resistance pre emergence herbicides prosulfocarb metolachlor pyroxasulfone individual field lolium rigidum populations collected random survey western australia prior commercialisation pre emergence herbicides resultsthis study shows first time randomly collected rigidum field populations selection either prosulfocarb metolachlor pyroxasulfone result concomitant evolution resistance prosulfocarb metolachlor pyroxasulfone three generations conclusionsin major weed rigidum traits conferring resistance new herbicides present herbicide commercialisation proactive multidisciplinary research evolutionary ecology modelling molecular biology required detect analyse resistant populations appear field several studies show evolved cross resistance weeds complex often unpredictable thus long term management cross resistant weeds must achieved heterogeneity selection effective chemical cultural physical weed control strategies delay herbicide resistance evolution society chemical industry
growing attention mature cell lymphomas leukemias mtcl committed accurate meaningful classifications improved pathogenetic concepts expanded therapeutic options requires considerations immunologic concepts cell homeostasis specifics cell receptor tcr affinities signaling scientists various disciplines established control research unit international conference mtcl brought together experts cell immunity oncology immunotherapy systems biology report meeting highlights covered topics diagnostic pitfalls implications new classification insights discovered genomic lesions well tcr centric concepts cellular dynamics host defense auto immunity tumorigenic clonal escape including predictions derived vivo imaging mathematical modeling presentations novel treatment approaches supplemented strategies optimizing cell immunotherapies work packages joint efforts would advance field mtcl efficiently identified
ggggcc hexanucleotide repeat expansion corf common genetic cause familial amyotrophic lateral sclerosis frontotemporal dementia study determined frequency corf repeat expansions different motor neuron diseases amyotrophic lateral sclerosis als motor neuron diseases affecting primarily first second motor neuron hereditary spastic paraplegia whereas studies corf repeat expansions published far rely polymerase chain reaction based screening applied polymerase chain reaction based techniques southern blotting furthermore determined sensitivity specificity southern blotting corf hexanucleotide repeat dna derived lymphoblastoid cell lines corf repeat expansions found familial als patients sporadic als patients hereditary spastic paraplegia patients patients motor neuron diseases affecting clinically primarily either first second motor neuron found hints correlation corf repeat length age onset somatic instability corf repeat observed lymphoblastoid cell lines compared dna derived whole blood patient therefore caution warranted repeat length determination immortalized cell lines elsevier inc rights reserved
since early beginnings hematopoietic stem cell transplantation hsct become established curative treatment increasing number patients life threatening hematological oncological hereditary immunological diseases become possible due worldwide efforts preclinical clinical research focusing issues transplant immunology reduction transplant associated morbidity mortality efficient malignant disease eradication latter accomplished potent graft versus leukemia gvl effector cells contained stem cell graft exciting insights genetics human leukocyte antigen hla system allowed improved donor selection including hla identical related unrelated donors besides bone marrow stem cell sources like granulocyte colony stimulating mobilized peripheral blood stem cells cord blood stem cells established clinical routine use reduced intensity non myeloablative conditioning regimens associated marked reduction non hematological toxicities eventually non relapse mortality allowing older patients individuals comorbidities undergo allogeneic hsct benefit gvl antitumor effects whereas early years malignant disease eradication high dose chemotherapy radiotherapy ultimate goal nowadays allogeneic hsct recognized cellular immunotherapy relying prominently immune mechanisms lesser extent non specific direct cellular toxicity chapter summarize key milestones hsct introduce current developments
background rapid increase extended spectrum beta lactamase esbl producing bacteria potential health hazard development antimicrobial resistance animal pathogens serious implications human health especially strains could transmitted human study antimicrobial resistance due esbl producing pseudomonas aeruginosa camel meat investigated methods study meat samples healthy camels two major abattoirs egypt cairo giza collected following culture cetrimide agar suspected aeruginosa colonies confirmed vitek system biome rieux aeruginosa isolates phenotypically identified esbl double disk synergy test additionally antimicrobial susceptibility testing esbl producing aeruginosa isolates done antimicrobial drugs carried disk diffusion method esbl genotypes determined polymerase chain reaction according presence bla pfr bla ctx bla shv bla tfm results pseudomonas aeruginosa isolated camel meat sample total percentage esbl producing aeruginosa camel meat isolates antibiogram results revealed highest resistance ceftriaxone rifampicin followed cefepime aztreonam prevalence rates beta lactamase genes recorded bla per bla ctx bla shv bla tem conclusions study illustrates presence high rates esbl aeruginosa camels represents increasing alarming risk transmission human opens door current future antibiotics therapy failure livestock associated esbl aeruginosa growing disaster therefore attention fully given livestock associated esbl bacteria try find way human beings
mesalazine undergoes extensive metabolism acetylation evidence involvement acetyltransferase nat type potential role nat type nat vivo tested two studies healthy young caucasians nat phenotyping carried using caffeine metabolic ratio urine postdose study mesalazine doses given thrice daily days urine blood samples drawn last dosing interval study single dose given samples taken postdose pharmacokinetics mesalazine acetylmesalazine calculated noncompartmental methods nat phenotype could allocated unequivocally slow rapid acetylators study slow rapid acetylators study geometric mean values study slow rapid acetylators follows mesalazine auc center dot center dot acetylmesalazine auc center dot center dot mesalazine acetylmesalazine values study follows mesalazine auc center dot center dot acetylmesalazine auc center dot center dot mesalazine acetylmesalazine higher auc values mesalazine steady state study indicate saturation mesalazine metabolism statistics provided evidence true difference mesalazine pharmacokinetics slow rapid acetylators significant correlation nat activity mesalazine pharmacokinetic parameter found nat major role human metabolism mesalazine vivo
oligodendrocyte development studied several decades served model system neurodevelopmental stem progenitor cell biology recently vast majority studies conducted lower species especially focused rodent development remyelination humans process myelination requires generation vastly myelinating glia occurring period years rather weeks furthermore evidenced presence chronic demyelination variety human neurologic diseases appears likely mechanisms regulate development become dysfunctional disease maybe key ways divergent across species improvements isolation techniques applied primary human neural oligodendrocyte progenitors fetal adult brain well advancements derivation defined progenitors human pluripotent stem cells begun reveal extent species conserved signaling pathways potential key differences cellular molecular levels article review commonalities differences myelin development rodents man describing approaches used study human oligodendrocyte differentiation myelination well heterogeneity within targetable progenitor pools discuss advances made determining conserved pathways may modeled rodents translate viable therapeutic strategies promote myelin repair elsevier inc rights reserved
background severe bronchiolitis bronchiolitis requiring hospital admission thought markedly increase asthma risk developing asthma age years date studies association small outside united states objective objective study investigate association severe bronchiolitis risk asthma birth cohort methods studied cohort nested within massachusetts general hospital obstetric maternal study moms prospective cohort pregnant women enrolled children mothers enrolled moms included analysis received care within health system diagnoses medications extracted children electronic health records also examined pregnancy perinatal risk factors collected underlying pregnancy study results birth cohort male white infants severe bronchiolitis overall children developed asthma age years among children severe bronchiolitis developed asthma age years multivariable logistic regression adjusting risk factors severe bronchiolitis remained strong risk factor developing asthma age years odds ratio confidence interval conclusions large boston birth cohort frequency severe bronchiolitis childhood asthma similar published data among children severe bronchiolitis risk developing asthma lower prior studies still high difference may due different study designs populations outcome definitions studied american academy allergy asthma immunology
transcriptome analysis key area biological inquiry decades years research field progressed candidate gene based detection rnas using northern blotting high throughput expression profiling driven advent microarrays next generation sequencing technologies revolutionized transcriptomics providing opportunities multidimensional examinations cellular transcriptomes high throughput expression data obtained single base resolution
foot mouth disease virus fmdv highly contagious viral disease antibodies pivotal providing protection fmdv infection serological protection one fmdv serotype confer interserotype protection however historical data shown interserotype protection induced following sequential fmdv challenge multiple fmdv serotypes study investigated kinetics fmdv specific antibody secreting cell asc response following homologous heterologous inactivated fmdv vaccination regimes demonstrated kinetics cell response similar four fmdv serotypes tested following homologous fmdv vaccination regime heterologous vaccination regime used sequential inoculation three different inactivated fmdv serotypes asia serotypes cell response fmdv sat serotype induced studies also revealed local lymphoid tissue detectable fmdv specific ascs absence circulating fmdv specific ascs indicating presence short lived ascs hallmark independent antigenic response inactivated fmdv capsid importance demonstrated development intraserotype response following sequential vaccination regime four different fmdv serotypes found indication short lived ascs local lymphoid tissue evidence response fmdv
experiences environments variety effects brain plasticity levels ranging molecular cellular behavioral brain plasticity one important characteristics animal survival particular environmental enrichment exercise induce many structural functional changes brain noteworthy changes result beneficial effects behavioral levels improved learning behavior antidepressant effects effects enrichment exercise mechanisms involved provide crucial evidence prevention treatment brain disorders however enriched environment exercise induced mechanisms underlying structural behavioral effects brain remain poorly understood review discuss molecular mechanisms environment experience dependent brain plasticity based results studies carried research group department neuroscience cell biology osaka university review consists three parts first description role motor protein kifa enhanced synaptogenesis memory function induced environmental enrichment second discussion function receptor hippocampal neurogenesis behavioral changes induced exercise third discussion role receptor fear extinction
non steroidal anti inflammatory drugs nsaid used alleviate pain sensations orthodontic therapy also assumed interfere associated pseudo inflammatory reactions particular effects partially selective cox inhibition constitutively expressed cox periodontal cells tissue induced nsaid meloxicam remain unclear investigate possible adverse side effects potentially useful beneficial effects orthodontic therapy examine underlying cellular tissue reactions randomly assigned male fischer rats three consecutive experiments animals cone beam computed tomography histology serology reverse transcription quantitative real time polymerase chain reaction three experimental groups control orthodontic tooth movement otm first second upper left molars niti coil spring otm daily oral meloxicam dose vitro stimulated human periodontal ligament fibroblasts hpdl orthodontic pressure without meloxicam vivo meloxicam significantly reduced serum reactive protein concentration tooth movement velocity orthodontically induced dentine root resorption oirr osteoclast activity relative expression inflammatory osteoclast marker genes within dental periodontal tissue presenting good gastric tolerance vitro observed corresponding significant decrease prostaglandin interleukin rankl opg expression hpdl mediated osteoclastogenesis inhibiting prostaglandin synthesis meloxicam seems downregulate hpdl mediated inflammation rankl induced osteoclastogenesis consequently tooth movement velocity thus limiting suitability analgesia orthodontic therapy however protective effects regarding oirr good tolerance profile suggest future prophylactic application merits investigation
chronic organochlorine exposure shown cause immune impairment numerous vertebrate species determine elasmobranchs exhibited compromised immunity due high contamination along coastal mainland southern california innate immune function compared round stingrays urobatis halleri collected mainland santa catalina island proliferation phagocytosis peripheral blood splenic epigonal leukocytes assessed percent phagocytosis mean fluorescence intensity mfi evaluated quantifying leukocytes positive relative amounts ingested fluorescent coli bioparticles total cell proliferation differed sites mainland rays higher cell concentration whole blood sigma pcb load explained significantly higher phagocytosis blood mainland rays sigma pcb sigma pesticide loads described increased splenic phagocytosis mfi mainland population data provides evidence strong correlated immunostimulation however site specific environmental variables may contributing observed effects elsevier ltd rights reserved
breast carcinogenesis multistep process involving genetic epigenetic modification process genes involved diverse pathways ranging dna repair metabolic processes study undertaken assess role promoter methylation gstp gene member glutathione transferase family enzymes relation expression polymorphism clinicopathological parameters tissue samples taken breast cancer patients paired normal adjacent tissues total subjects studied frequency promoter methylation cancerous tissue normal tissues hypermethylated status gene significantly associated loss protein expression odds ratio confidence interval furthermore compared clinical parameters significant association found promoter hypermethylation lymph node metastasis tumor stage tumor grade estrogen receptor status progesterone receptor status study first kind kashmiri population indicates gstp shows aberrant methylation pattern breast cancer consequent loss protein expression furthermore also shows gene polymorphism ileval codon related promoter methylation two independent events breast cancer development
high temperature requirement htra degp escherichia coli important element extracytoplasmic protein quality control system member evolutionarily conserved family serine proteases characteristic feature protein allosteric mode activation regulatory loops play crucial role transmission allosteric signal yet role fully elucidated therefore undertook study explain role individual residues inducing maintaining proteolytic activity htra investigated influence amino acid substitutions located within loop kinetics model substrate cleavage well dynamics oligomeric structure htra found mutations expected disturb loop structure interactions remaining regulatory loops severely diminished proteolytic activity htra opposite effect increased activity observed substitution predicted strengthen interactions mediated htrags protein equilibrium shifted toward active enzyme formed preferentially high order oligomeric forms
streptomyces genetics secondary metabolism laboratory course gives introduction versatile soil dwelling gram positive bacteria streptomyces secondary metabolism course combines genetic modification streptomyces growing strain protoplast preparation plasmid isolation alkaline lysis phenol precipitation digestions ligations prior protoplast transformation well investigating secondary metabolites produced strains thus course combination microbiology molecular biology chemistry course students understand relationship genes proteins produced metabolites international union biochemistry molecular biology
recent years myocardium rediscovered lenses immunology lymphocytes implicated pathogenesis cardiomyopathies different etiologies aging important risk factor heart diseases also impact immune system thus sought determine whether immunological activity would influence myocardial structure function elderly mice morphological functional molecular analyses revealed age related myocardial impairment occurs parallel shifts composition tissue resident leukocytes accumulation activated foxp forkhead box ifn gamma cells heart draining lymph nodes comprehensive characterization different aged immune deficient mouse strains revealed cells significantly contribute age related myocardial inflammation functional decline upon adoptive cell transfer cells isolated mediastinal lymph node med aged animals exhibited increased cardiotropism compared cells purified young donors irrelevant sites nevertheless cells caused rather mild effects cardiac functionality indicating myocardial aging might stem combination intrinsic extrinsic immunological factors taken together data herein presented indicate heart directed immune responses may spontaneously arise elderly even absence clear tissue damage concomitant infection observations might shed new light emerging role cells myocardial diseases primarily affect elderly population
background long term treatment chronic hepatitis chb nucleos ide analogs results emergence drug resistant hepatitis virus hbv harboring mutations polymerase gene phyllanthus extract anti hbv activity however antiviral activity lamivudine lmv resistant mutants examined methods hbv harboring lmv resistant mutations rtmi rtmv rtms gene ymdd tyrosine methionine aspartate aspartate reverse transcriptase active site generated sensitivity phyllanthus urinaria koreanis extract examined southern blotting real time pcr used determine concentration plant extract required inhibit hbv dna synthesis respectively enzyme linked immunosorbent assay used measure hbv surface antigen hbsag hbv core antigen hbcag secretion cytotoxic concentration extract measured dimethylthiazol diphenyltetrazolium bromide assay real time pcr used measure mrna expression levels results expression intracellular hbv dnas hbv mutant transfected hepg cells decreased upon treatment phyllanthus extract secretion hbsag hbcag also fell dose dependent manner phyllanthus extract induced interferon beta ifn beta cyclooxygenase cox interleukin mrna expression hbv transfected hepg cells possibly via activation extracellular signal regulated kinases jun terminal kinases induction retinoic acid inducible gene toll like receptor myeloid differentiation primary response gene tumor necrosis factor receptor associated factor gene expression hbv transfection absence extract exposure cells extract alone trigger signaling cascades conclusions phyllanthus extract inhibited hbv dna synthesis hbsag hbcag secretion replicating cells harboring hbv wild type lmv resistant mutants likely inducing expression ifn beta cox data indicate phyllanthus extract may useful alternative therapeutic agent treatment drug resistant chb patients
chinese cherry prunus pseudocerasus allotetraploid species exhibits natural self compatibility however full length cdna sequences functional analysis transcripts rnase alleles chinese cherry cultivars known two cultivars taixiaohongying laiyang short cherry genotypes two rnases transcribed northern blotting two full length cdnas rnase cloned analyzed result transcribed rnases rnase rnase two complete cdna sequences rnase rnase registered respectively characteristic structure rosaceous rnases based sequences indicating normal function rnase style rnase rnase transcribed style nonfunctional rnase could used represent nonfunctional rnase rnase phylogenetic analysis implied rnases prunus including chinese cherry lower intra specific similarity diverged earlier divergence species prunus
purpose test hypothesis differences dna double strand breaks dsb repair fidelity underlies differences radiosensitivity materials methods primary fibroblast culture derived pediatric cancer patient treated reduced radiation doses consequent family history radiosensitivity reminiscent chromosomal fragility syndrome compared normal control dna dsb rejoining repair fidelity studied southern blotting hybridization specific fragments alu repetitive sequence representing overall dsb rejoining capacity genome mbp noti restriction fragment chromosome dsb repair fidelity results although assays showed statistically significant difference two cell strains residual mis repaired mis rejoined dsb residual damage lower alu enriched genome assay compared noti assay respectively conclusions results suggest comparison classic dsb repair experiment assay measuring dna dsb repair fidelity provide better resolution accurate estimate misrepair radiation induced dna damage underlies genomic instability increased radiosensitivity
insulin resistance major metabolic abnormality large majority patients type diabetes bromodomain containing protein brd transcriptional activator repressor switch mating type sucrose non fermenting swi snf like functions regulates chromatin suppresses adipocyte differentiation regulates pancreatic beta cell biology however effects brd insulin resistance remain unknown overexpression brd white adipose tissue wild type mice led insulin resistance brd overexpression induced expression nuclear factor kappa kappa target genes mainly involving proinflammatory chemotactic factors adipocytes furthermore decreased expression dep domain containing mtor interacting protein deptor enhance mechanistic target rapamycin mtor signaling thus blocking insulin signaling collectively results provided evidence novel role brd chronic inflammation insulin resistance suggesting potential improving insulin resistance treating metabolic disorders elsevier inc rights reserved
antiretroviral therapy art compromised selection drug resistance strains promoted lack adherence therapy drug tolerance drug resistant strains persist years minority populations drug resistance mutation selected use non nucleotide reverse transcriptase inhibitors including nevirapine efavirenz efv used low income countries describe use less expensive qualitative point mutation polymerase chain reaction pmqpcr targeting mutation validate use methodology tested previously sequenced samples patients treated highly active art viral loads copies compared results assay illumina deep sequencing due low cost high specificity test particularly suitable low income countries screen pretreatment resistance patients either initiating art failing first line regimens containing efv
significance growing population baby boomers great need determine effects advanced age function immune system recent advances universally accepted advanced age associated chronic low grade inflammatory state referred inflamm aging alters function immune nonimmune cells mononuclear phagocytes play central role initiation resolution inflammation multiple organ systems exhibit marked changes phenotype function response environmental cues including low levels pro inflammatory mediators seen aged critical issues although know great deal function immune cells young adults growing body literature focusing aging adaptive immune system much less known impact age innate immunity critical role mononuclear phagocytes process future directions article focus tissue specific monocyte macrophage subsets altered aged milieu hope compilation observations spark expansion research field
intronic ggggcc hexanucleotide repeat expansion chromosome open reading frame corf gene considered common cause amyotrophic lateral sclerosis als frontotemporal dementia caucasian populations using repeat primed polymerase chain reaction analysis southern blotting methods assessed frequency size hexanucleotide repeat expansion cohort sporadic als sals patients control individuals han chinese origin identified sals patients none control individuals carriers corf expansions repeats comprehensive neuropsychological battery conducted expansion positive als patients patients found cognitive impairment expansion positive patients genotyped previously reported single nucleotide polymorphism snp risk haplotypes chromosome among snp risk haplotypes shared expansion carriers suggesting common founder european ancestry meta analysis demonstrated intermediate expansion size repeats rare patients controls significantly associated risk als knowledge first study identify proportion chinese sals patients carrying pathologic expansion similar repeats completely elaborate snp risk haplotypes chinese expansion positive patients providing indispensable evidence origin geographical range population prevalence corf associated als elsevier inc rights reserved
describe genetic transformation mycelial tissue diaporthe phaseolorum endophytic fungus isolated mangrove species laguncularia racemosa using agrobacterium tumefaciens mediated transformation atmt atmt uses hygromycin resistant hph gene green fluorescent protein selection agents dna integration fungal genome assessed pcr southern blotting transformants examined mitotically stable analysis dna flanking sequences thermal asymmetric interlaced pcr tail pcr demonstrated disrupted genes transformants similarities conserved domains proteins involved antibiotic biosynthesis pathways library transformants generated transformants antibiotic activity staphylococcus aureus important human pathogen protocol described using atmt phaseolorum useful identification analysis fungal genes controlling pathogenicity antibiotic pathways moreover protocol may used reference species diaporthe genus first report describe agrobacterium mediated transformation phaseolorum tool insertional mutagenesis
present study investigated role epidermal stem cell expressed microrna let pathogenesis hypertrophied anal papillae hypertrophied anal papillae examined presence epidermal stem cells epidermal stem cells identified using flow cytometry immunofluorescent staining cell surface markers integrin alpha integrin beta subunits expression levels microrna let alpha beta alpha beta cells compared using reverse transcription quantitative polymerase chain reaction northern blotting lentivirus mediated expression microrna let epidermal stem cells utilized order study effects microrna cell cycle proteins cyclin ccnd cyclin dependent kinase cdk microrna let overexpressing cells examined using flow cytometry order determine effects microrna cell cycle progression alpha beta epidermal stem cells identified hypertrophic anal papillae following isolation enrichment alpha beta population cells found rapid rate proliferation vitro expression cell cycle related proteins elevated population compared alpha beta cells expression microrna let alpha beta epidermal stem cells significantly lower alpha beta cells two microrna let target genes ccnd cdk found upregulated alpha beta cells exogenous precursor microrna let overexpressed alpha beta epidermal stem cells cell proliferation rate significantly lower cells expressing microrna let containing mutated seed sequence addition exogenous microrna let resulted increased expression level mature microrna let expression ccnd cdk reduced epidermal stem cells transfected microrna let arrested phase percentage cells phase significantly reduced conclusion let expression results upregulation cell cycle related proteins ccnd cdk resulting excessive proliferation leads formation hypertrophic anal papillae
argan tree argania spinosa occurs restricted area southwestern morocco characterized low water availability high evapotranspirative demand despite adaptation argan tree drought stress extent argan forest declined markedly due increased aridity land use changes expansion olive cultivation oil argan seed used cooking basis numerous cosmetics identification argan tree varieties enhanced drought tolerance may minimize economic losses associated decline argan forest constrain spread desertification study collected argan ecotypes four contrasting habitats grew identical controlled environment conditions investigate response drought leaf gas exchange analysis indicated argan ecotypes showed high degree adaptation drought stress maintaining photosynthetic activity low levels foliar water content ordinating photosynthesis stomatal behavior metabolism stomata argan trees highly sensitive increased leaf air vapor pressure deficit representing adaptation growth arid environment potential evapotranspiration high however despite originating contrasting environments four argan ecotypes exhibited similar gas exchange characteristics fully irrigated water deficit conditions population genetic analyses using microsatellite markers indicated high degree relatedness four ecotypes indicative artificial selection transport ecotypes different provinces throughout centuries management argan forest majority genetic variation across four populations observed individuals suggesting improvement argan possible phenotypic screening physiological responses drought may prove effective identifying individuals developing varieties enhanced drought tolerance enable maintenance argan production climate change results frequent severe drought events northern africa
identifying genes pathways contribute differences neurobehavioural traits key goal psychiatric research despite considerable success identifying quantitative trait loci qtls associated behaviour laboratory rodents pinpointing causal variants genes challenging long time main obstacle size qtls could encompass tens hundreds genes however recent studies exploited mouse rat resources allow mapping phenotypes narrow intervals encompassing genes review studies showcase rodent resources used highlight insights neurobehavioural traits provided date discuss see biggest challenge field translating qtls biological knowledge experimentally validating functionally characterizing candidate genes propose crispr cas genome editing system holds key overcoming obstacle finally challenge traditional views inbred versus outbred resources light recent resource technology developments
metabolic fate organophosphorothioate type insecticide chlorpyrifos acutely intoxicated years old female investigated liquid chromatography electrospray ionisation tandem mass spectrometry esi analysis urine samples fifteen metabolites bioactivated intermediate chlorpyrifos oxon cpo respectively three described man far identified basis characteristic transitions precursor product ion neutral loss scans chlorine isotopomer patterns partly synthesis reference compounds subsequent structure confirmation three distinct biotransformation routes proposed cleavage reactions aromatic phosphoester bond cleavage reactions alkyl phosphoester bonds glutathione gsh dependent nucleophilic substitution chlorine aromatic moiety route reported humans hitherto completely unknown scheme metabolism urinary markers latter chiefly cysteine conjugates mono dechlorinated cpo mono deethyl mono deethyl cpo well mercapturic acid conjugate dichloro pyridinol presence dichloro methylthio pyridinol well glucuronide suggests cysteine conjugate beta lyase mediated degradation addition qualitative screening renal elimination profiles primary products scheme diethyl thiophosphate detp diethyl phosphate dep trichloro pyridinol tcp monitored days biphasic first order excretion mechanism half lives initial fast excretion phase terminal phase sum free detp dep found tcp hardly eliminated free form glucuronide identified phase conjugate half lives calculated total amount tcp acidic hydrolysis urine samples present study gives detailed view biotransformation together obtained kinetic data adds novel aspects limited knowledge human metabolism xenobiotic particular high dosage elsevier ireland ltd rights reserved
aims cystic solid pancreatic lesions kras mutational status refines diagnosis uncertain endoscopic ultrasound eus aspirates test fast turnaround time ideally performed centre patient diagnosed idylla kras mutation test enables standardisation even units without molecular expertise methods idylla test designed use formalin fixed paraffin embedded ffpe sections however directly pipetted corresponding dna preparation aspirate sample cartridge automatically run ffpe sample inserted performance compared sanger sequencing allele specific locked nucleic acid pcr aslnaqpcr next generation sequencing ngs light clinicopathological end points results idylla yielded valid results cases total cases showed mutation either kras exon exon idylla kras test specificity sensitivity higher sanger sequencing identical aslnaqpcr low abundant mutant allele cases excluded analysis idylla kras mutation test clinical sensitivity increased approaching ngs conclusions first study applied novel idylla kras test clinical setting pancreatic cancer particular system easily implemented routine assessment pancreatic eus fine needle aspiration derived dna samples quickly provide information kras mutational status supplement cytological evaluation
purpose compare tendon bone healing remnant preserving conventional anterior cruciate ligament reconstruction methods new zealand rabbits randomly assigned conventional acl reconstruction group group remnant preserving tensioning acl reconstruction group group remnant preserving graft remnant sleeve acl reconstruction group group rabbits knees group incidence degree bone tunnel enlargement group analyzed using reconstruction graft tendon bone healing monitored masson staining osteoprotegerin opg receptor activator nuclear factor kappa ligand rankl mrna expression bone tissue surrounding graft reverse transcriptase polymerase chain reaction pcr used evaluate ratio opg rankl expression results histological analysis showed group best graft tendon bone healing followed group group time points post surgery weeks post surgery opg mrna levels opg rankl values higher groups compared group rankl mrna levels groups lower group weeks post surgery incidence degree bone tunnel enlargement greater group compared groups conclusion remnant preserving construction approaches promoted graft tendon bone healing underlying mechanism may associated upregulation opg mrna downregulation rankl mrna bone tunnel early post operation
neutrophils pmn best known phagocytic functions invading pathogens microorganisms shortest half life amongst leukocytes non activated state constitutively committed apoptosis recruited inflammatory sites resolve inflammation produce array cytotoxic molecules potent antimicrobial killing yet powerful cytotoxic molecules released uncontrolled manner damage surrounding tissues recent years however neutrophil versatility increasingly evidenced demonstrating plasticity immunoregulatory functions recently identified new neutrophil derived subpopulation develops spontaneously standard culture conditions without addition cytokines growth factors granulocyte colony stimulating factor csf interleukin phagocytic abilities neutrophil remnants largely contribute increase size immensely therefore termed giant phagocytes phi unlike neutrophils phi long lived culture express cluster differentiation neutrophil markers cdb cdb myeloperoxidase mpo neutrophil elastase devoid monocytic lineage markers dendritic cdc markers also take latex zymosan respond oxidative burst stimulation opsonized zymosan pma phi also express scavenger receptors unlike neutrophils internalize oxidized low density lipoprotein oxldl moreover unlike fresh neutrophils cultured monocytes respond oxldl uptake increased reactive oxygen species ros production additionally phagocytes contain microtubule associated protein light chain lcb coated vacuoles indicating activation autophagy using specific inhibitors evident phagocytosis autophagy prerequisites development likely nadph oxidase dependent ros describe method preparation new subpopulation long lived neutrophil derived phagocytic cells culture identification currently known characteristics protocol essential obtaining characterizing phi order investigate significance functions
objectives acute pancreatitis characterized systemic inflammatory response hypothesized fundamental inflammatory response observed initial stages acute pancreatitis rather response methods seven patients mild presenting within three days symptom onset recruited peripheral blood drawn five consecutive days plasma cytokine levels compared eleven healthy controls plasma cytokine measurements performed using cytokine bead array assay data quantified using fcap array software results levels significantly elevated patients compared controls levels significantly elevated day ila levels increased day significantly elevated day compared controls declining non significant levels day ifn gamma tnf alpha levels low time points conclusion anti inflammatory cytokine implicated suppressing cytokines secreted macrophages cells elevated day addition helps drive development cells significantly elevated time points preliminary results imply underlying induced systemic inflammation polarized rather response
background systemic reactivations herpesviruses may occur intensive care unit icu patients even without prior immune deficiency however clinical relevance events uncertain methods study selected patients admitted septic shock treated days prospectively enrolled cohort consecutive adults mixed icus tertiary care hospitals netherlands excluded patients received antiviral treatment week icu admission known immunodeficiency studied viremia episodes cytomegalovirus cmv epstein barr virus ebv human herpesvirus hhv herpes simplex virus types hsv hsv varicella zoster virus vzv weekly polymerase chain reaction plasma results among patients observed viremia episodes patients viremia cmv ebv hhv hsv hsv vzv detected patients respectively patients multiple concurrent viremia events crude mortality icu latter group compared remaining patients adjustment potential confounders time dependent bias competing risks concurrent cmv ebv reactivations remained independently associated increased mortality adjusted subdistribution hazard ratio confidence interval conclusions herpesvirus reactivations documented septic shock patients without prior immunodeficiency frequently occurred simultaneously concurrent reactivations could independently associated mortality
presented research hypothesis driven laboratory exercise teaches advanced undergraduate students state art methods thinking integrated molecular physiology context students understand theoretical background iron acquisition model plant arabidopsis thaliana design flowchart summarizing key steps experimental approach students made familiar current techniques qpcr following experimental outline students grow arabidopsis seedlings age six days sufficient deficient iron supply arabidopsis plants two different genotypes namely wild type fit loss function mutants fit mutants lack essential transcription factor fit required iron acquisition plant growth students monitor growth phenotypes root iron reductase activity quantitative qualitative manner students determine gene expression regulation fit fro reference gene reverse transcription quantitative pcr qpcr finally students interpet results build model summarizing connections morphological physiological molecular iron deficiency responses learning outcomes suggestions integrating course concept explained international union biochemistry molecular biology
aminocarbonyl methylpropyl cyclohexylmethyl indazole carboxamide chminaca recently introduced synthetic cannabinoid present information available vitro vivo human metabolism chminaca therefore biomonitoring studies screen chminaca consumption lack information potential biomarkers metabolites target bridge gap investigated vitro metabolism chminaca using human liver microsomes hlms formation chminaca metabolites monitored using liquid chromatography coupled time flight mass spectrometry twenty six metabolites chminaca detected including seven mono hydroxylated six hydroxylated metabolites metabolite resulting dealkylation chminaca produced cytochrome cyp enzymes two carboxylated metabolites likely produced amidase enzymes five glucuronidated metabolites also formed five mono hydroxylated one carboxylated metabolite likely major metabolites detected involvement individual cyps formation chminaca metabolites tested using panel seven human recombinant cyps rcyps hydroxylated chminaca metabolites produced hlms also produced rcyps tested among rcypa active enzyme vitro metabolites chminaca also present urine obtained chminaca user therefore showing reliability results obtained using vitro metabolism experiments conducted predict chminaca vivo metabolism chminaca metabolites target biomonitoring studies using urine samples reliably identified used routine analysis copyright john wiley sons ltd
rabbit cells models frequently used pharmacological experiments toxicity tests particularly useful corneal transplant experiments obtained corneal endothelial cell line normal rabbit corneal endothelium acquired infinite proliferative potential without requiring gene transfer infinitely proliferative rabbit corneal endothelial cells ircecs could cultured generations exhibited greater ability proliferate normal rabbit corneal endothelial cells rcecs cultivated conventional methods results reverse transcriptase polymerase chain reaction pcr immunostaining analyses revealed expression profiles corneal endothelial markers collagen type viii atpase similar rcecs vivo corneal endothelium scanning electron microscopy showed many microvilli present surface cells ultrastructure maintained addition verified ircecs similar levels pump function rcecs using ussing chamber system results soft agar colony formation assay suggested ircecs tumourigenic taken together results demonstrated ircecs exhibited gene expression profiles properties equivalent native rabbit corneal endothelium making cells useful corneal endothelial research studies copyright john wiley sons ltd
progesterone neuroprotective reagent used treatment spinal cord injury sci experimental animal models however effect mechanism axonal dieback early stage sci remain unclear investigate dynamics injured axons effect axonal dieback glial response behavioral recovery mouse model sci two photon intravital imaging combined simplified imaging window chamber used image axons hemisected spinal cords period days repeated imaging showed axonal dieback distance mice treated sci significantly reduced mice treated vehicle sci time point sci densities astrocytes microglia sci vehicle treated group significantly higher mice treated sci real time polymerase chain reaction assay indicated administration sci regulated expression pro inflammatory cytokines mcp nos beta treatment also improved behavioral performance post injury findings suggested exerted neuroprotective effect attenuating axonal dieback reducing accumulation astrocytes microglia inhibiting release pro inflammatory cytokines elsevier ltd rights reserved
vascular adhesion protein vap also known semicarbazide sensitive amine oxidase ssao copper containing amine oxidase aoc catalyzes oxidative deamination primary amines one endogenous substrate recently described siglec although mechanism action vivo completely understood suggested play role immune cell trafficking making target interest autoimmune inflammatory diseases much enzymology performed around target conducted absorbance fluorescent radiometric formats limitations high throughput screening subsequent compound profiling authors present use bioluminescent assay originally developed monoamine oxidase enzymes high throughput format used related ssaos aoc given substrate similarity vap authors also demonstrate compatible different sources vap purified recombinant vap overexpressed live cells journal biomolecular screening
xylazine used veterinary medicine sedation anesthesia analgesia also reported misused horse doping agent drug abuse drug attempted sexual assault source accidental intended poisonings far data concerning human metabolism described data necessary development toxicological detection methods monitoring drug abuse cases metabolites analytical targets therefore metabolism xylazine investigated rat human urine several sample workup procedures metabolites identified using gas chromatography mass spectrometry liquid chromatography coupled linear ion trap high resolution multistage xylazine dealkylated dealkylated oxidized hydroxylated phase metabolites phenolic metabolites partly excreted glucuronides sulfates phase phase metabolites identified rat urine also detected human urine rat urine low dose well human urine overdose mainly hydroxy metabolites detected using authors standard urine screening approaches thus possible monitor application xylazine assuming similar toxicokinetics humans
nutrition plays important role human metabolism health however unclear far self reported nutrition intake reflects facto differences body metabolite composition investigate question epidemiological scale conducted metabolomics study analyzing association self reported nutrition habits metabolites quantified blood serum male participants kora population study aged years using data item food frequency questionnaire consumption different food groups well four derived nutrition indices summarizing food groups nutrient content analyzed association measured metabolites self reported nutrition intake index polyunsaturated fatty acids associates decrease saturation fatty acid chains glycero phosphatidylcholines analyzed serum samples using principal component analysis dietary patterns highly associating serum metabolite concentrations could identified first principal component interpreted healthy nutrition lifestyle associates decrease degree saturation fatty acid moieties different glycero phosphatidylcholines summary analysis shows population level metabolomics provides possibility link self reported nutrition habits changes human metabolic profiles associating metabolites reflect self reported nutritional intake moreover could show strength association increases composed nutrition indices used metabolomics may thus facilitate evaluating questionnaires improving future questionnaire based epidemiological studies human health
construction random ssdna sublibrary important step aptamer screening process available construction methods include asymmetric pcr biotin streptavidin separation lambda exonuclease digestions pcr amplification key step main drawback pcr amplification overamplification increasing nonspecific hybridization among different products products may cause loss potential high quality aptamers inefficient screening even screening failure cycle number optimization pcr amplification main way avoid overamplification fundamentally eliminate nonspecific hybridization decreased cycle number may lead insufficient product amounts developed new method asymmetric emulsion pcr could overcome shortcomings conventional pcr asymmetric emulsion pcr different templates separated emulsion particles allowing single molecule pcr template separately amplified nonspecific hybridization avoided overamplification formation products observed method simple direct amplification cycles provide high quality ssdna library therefore asymmetric emulsion pcr would improve screening efficiency systematic evolution ligands exponential enrichment authors biotechnology applied biochemistry published wiley periodicals inc behalf international union biochemistry molecular biology inc
micrornas mirnas nucleotide non coding small rnas play important roles plant development stages cotton fiber development include initiation elongation secondary wall thickening swt maturation constructed seven fiber rna libraries representing initiation elongation swt stages total conserved mirna families seven candidate mirnas profiled using small rna sequencing northern blotting real time polymerase chain reaction pcr analyses revealed dynamic expression mirnas fiber development addition targets conserved mirnas targets five candidate mirnas identified degradome sequencing analysis correlated expression mirnas targets demonstrated specific mirnas suppressed expression transcription factors sbp myb leucine rich receptor like protein kinase pectate lyase tubulin udp glucuronic acid decarboxylase cytochrome oxidase subunit affect fiber development histochemical analyses detected biological activity mirna ovule fiber development suppressing mirna function resulted reduction mature fiber length illustrating mirna plays essential role fiber elongation
previously described dermacentor varibialis cdna encodes ubiquitously expressed tick saliva secreted functional histamine release factor hrf homolog study gene specific primers based dvhrf open reading frame nucleotide sequence utilized amplify three orthologs wood tick andersoni black legged tick southern cattle tick boophilus microplus lone star tick amblyomma americanum nucleotide level sequence comparisons revealed similarity dvhrf dahrf aahrf bmhrf respectively predicted polypeptide comparisons revealed similarity dahrf aahrf bmhrf respectively phylogenetically tick hrf clade distinct bootstrap value closely related arthropods distantly related vertebrate protozoan clades consistent sequence similarity analysis dvhrf specific northern blotting probe hybridized similar base pair mrna band rna blots likewise mouse polyclonal antibody coli expressed recombinant dvhrf cross reacted baculovirus expressed non fusion raahrf rdahrf rbmhrf revealed northern blotting analysis larvae nymph rna dvhrf mrna expressed immature mature ticks indicating transcription developmentally regulated unlike rhrf tctp proteins organisms calcium binding function may conserved tick hrf homologs revealed cacl overlay assay apparent global expression dvhrf orthologs make protein family ideal target antigen development novel tick control strategies targeting multiple tick species
archaea widespread organisms colonizing almost every habitat earth however molecular biology archaea still remains relatively uncharacterized rna metabolism central cellular process extensively analyzed bacteria eukarya contrast analysis rna metabolism dynamic archaea limited date facilitate analysis rna metabolism dynamic system wide scale archaea established non radioactive pulse labeling rna using nucleotide analog thiouracil two commonly used model archaea halophile euryarchaeota haloferax volcanii thermo acidophile crenarchaeota sulfolobus acidocaldarius work show pulse labeling efficiently performed two organisms dose time dependent manner addition results suggest uracil prototrophy critical impact overall incorporation rna molecules accordingly work suggests incorporation widely performed archaea thereby expanding molecular toolkit analyze archaeal gene expression network dynamic unprecedented detail
kiaa studies regarding cell biology neurological diseases found significantly amplified esophageal squamous cell carcinoma escc lymph node metastasis compared escc without lymph node metastasis suggests kiaa may play role lymph node metastasis escc best knowledge study performed investigate role kiaa escc present study expression kiaa detected immunohistochemistry expression statistically analyzed clinicopathological parameters using commercially obtained tissue arrays consisting cases escc paired controls kiaa knocked vivo using transient transfection specific small hairpin rna shrna vectors escc cell lines whose endogenous kiaa level highest variation proliferation migration invasion evaluated using methyl thiazolyl tetrazolium wound healing transwell assay respectively found vivo kiaa expression significantly associated lymph node metastasis differentiation vivo knockdown kiaa significantly affect proliferation mobility escc cell line overall first study suggesting kiaa may play role lymph node micrometastasis escc
objectivethe functional variant within methylenetetrahydrofolate reductase mthfr gene producing alterations folate metabolism associated risk non syndromic cleft lip without cleft palate nscl assessed association chilean population using combined analysis case control case parent trio samples subjects methodssamples cases controls case parent trios sharing cases genotyped odds ratio estimated case control allele genotype frequency differences result confirmed allele transmission distortion trios due samples independent combined also computed maternal genotype effect additionally evaluated based log linear method resultsborderline significant observed risk allele case control sample however triad sample showed significant association confirmed combined maternal genotype also associated phenotype conclusionsin contrast previous reports considering chilean subjects results demonstrated offspring maternal genotypes mthfr variant strongly associated nscl chilean population
multi protein complexes rather single proteins acting isolation often govern molecular pathways regulating cellular homeostasis based principle purification critical proteins required functioning pathways along native interacting partners allowed mapping protein constituents pathways also provided deeper understanding proteins coordinate regulate pathways within context understanding protein spatiotemporal localization protein protein interaction network aid defining role within pathway well misregulation may lead disease pathogenesis address need several approaches protein purification tandem affinity purification tap localization affinity purification lap designed used successfully nevertheless order apply approaches pathway scale proteomic analyses strategies must supplemented modern technological developments cloning mammalian stable cell line generation describe method generating lap tagged human inducible stable cell lines investigating protein subcellular localization protein protein interaction networks approach successfully applied dissection multiple cellular pathways including cell division compatible high throughput proteomic analyses
different mutations ldl receptor gene ldlr result familial hypercholesterolemia present study adds landscape molecular heterogeneity bulgaria frequency molecular characteristics large ldlr rearrangements study done genomic dna group unrelated patients severe hypercholesterolemia plasma total cholesterol level mmol southern blotting analysis three carriers large ldlr rearrangements frequency two novel mutations found large inversion involving exons deletion fragment located exons ldlr
aim assess rate matrix gla protein carboxylation patients small intestinal bacterial overgrowth sibo decipher association subclinical atherosclerosis methods patients suspected sibo presented low risk cardiovascular disease showed evidence atherosclerotic plaques included study glucose breath test performed order confirm diagnosis sibo vascular assessment carried ultrasound examination plasma levels inactive form mgp dephosphorylated uncarboxylated matrix gla protein quantified elisa vitamin intake estimated using food frequency questionnaire results thirty nine patients included study sibo confirmed patients also presented higher concentration dephosphorylated uncarboxylated matrix gla protein arterial stiffness elevated sibo group pulse wave velocity phenomenon observed correlate linearly levels dephosphorylated uncarboxylated matrix gla protein beta carotid intima media thickness arterial calcifications observed significantly elevated compared controls conclusion sibo associated reduced matrix gla protein activation well arterial stiffening observations regarded important indicators subclinical atherosclerosis hence screening sibo intestinal decontamination supplementation vitamin potential incorporated clinical practice additional preventive measures
breast cancer disease different clinical histological molecular characteristics frequently presenting mutated tumour suppressing genes oncogenes known tumour suppressor often mutated several mutations inhibit role transcriptional repressor several oncogenes topoisomerase alpha top alpha gene target also known target anthracyclines aim present study analyse genetic alterations top alpha genes levels protein expression well association survival mexican women total biopsies collected tumour adjacent tissues patients identify point mutations deletions gene sanger sequencing method carried deletions amplifications top alpha gene determined using quantitative polymerase chain reaction qpcr addition expression top alpha proteins evaluated western blotting furthermore protein expression analysed proximity ligation assay pla qpcr patients found triple negative breast cancer tnbc average age time diagnosis patients years scarff bloom richardson sbr histological grade iii differences point mutations deletions deletions amplifications well protein expression level top alpha observed patients tnbc non tnbc patients however patients tnbc showed protein overexpression determined pla qpcr western blotting furthermore found association top alpha amplification expression protein patients tnbc concerning overexpression resulted lower survival patients
woman presented least four manifestations varicella zoster virus vzv infection including central nervous system vasculitis first years hiv infection evaluated cell responses vzv given infrequency multiple recurrences vzv occurred especially following immune reconstitution antiretroviral therapy
cutaneous leishmaniasis main public health problem morocco algeria tunisia iran known mati region biennial meeting pasteur institutes mati region november tehran leishmania panel formed scientists different expertise research mati institut pasteur paris proposed new consortium develop integrative research approach better understand disease proposed consortium synergizes three complementary thematics leishmania genetics host immune response vector transmission moreover assessing social impact aim raise awareness national international levels major focus consortium
amino acids key components human animal nutrition part protein containing diet supplemented individual products last years marked move away extraction amino acids natural products replaced efficient fermentation processes using nonanimal carbon sources today several amino acids produced fermentation plants capacities tonnes serve requirements animal feed human nutrition main fermentative amino acids animal nutrition lysine threonine tryptophan methionine continues manufactured animal feed use principally chemical synthesis pharmaceutical grade manufactured enzymatic resolution amino acids play important role medical nutrition particularly parenteral nutrition high purity requirements infusion grade products amino acids also appearing often dietary supplements initially performance athletes increasingly general population understanding effects individual amino acids human metabolism deepened specialized product mixtures offered improve athletic performance body building
forster resonance energy transfer fret based studies become increasingly common investigation gpcr signaling research group developed intra molecular fret sensor detect interaction subunits gpcrs live cells following agonist stimulation detail protocol detecting changes fret beta adrenergic receptor gas terminus peptide upon treatment isoproterenol hydrochloride previously characterized fret sensor single polypeptide consisting serially full length gpcr fret acceptor fluorophore mcitrine spasm systematic protein affinity strength modulation linker fret donor fluorophore mcerulean terminal peptide protocol detail cell preparation transfection conditions equipment setup assay execution data analysis experimental design detects small changes fret indicative proteinprotein interactions also used compare strength interaction across ligands gpcr protein pairings enhance signal noise measurements protocol requires heightened precision steps presented enable reproducible execution
angiosperms gymnosperms two major groups extant seed plants suggested gymnosperms lack flowering locus key integrator core flowering pathways angiosperms taking advantage newly released gymnosperm genomes revisited evolutionary history plant phosphatidylethanolamine binding protein pebp gene family phylogenetic reconstruction expression patterns three gymnosperm taxa heterologous expression arabidopsis studied investigate functions gymnosperm like terminal flower tfl like genes phylogenetic reconstruction suggests ancient gene duplication predating divergence seed plants gave rise tfl genes expression patterns indicate gymnosperm tfl like genes play role reproductive development process gymft gymft like genes resulting duplication event common ancestor gymnosperms function growth rhythm sexual development pathways expressed arabidopsis spruce like tfl like genes repressed flowering study demonstrates gymnosperms like tfl like genes frequent gene genome duplications contributed significantly expansion plant pebp gene family expression patterns gymnosperm pebp genes provide novel insight functional evolution gene family
legume plants uricase gene nodulin plays positive role metabolism ureide amide compounds symbiotic nitrogen fixing nodules study pot experiment performed examine effects ammonium application transcription msu gene distribution major nitrogen compounds alfalfa medicago sativa data showed alfalfa plant significant difference contents nitrogen compounds xylem saps compared soybean plant belongs typical amide type legume plants little ureide accumulation accumulation asparagines ureide tissues alfalfa mainly gathered nodules northern blotting showed excessive ammonium significantly inhibited transcription msu gene nodules roots mrna accumulation msu gene plants exposed excessive ammonium decreased gradually culture time extension indicating application ammonium significantly inhibited transcription msu gene alfalfa plants although application excessive ammonium increased contents amino acids various tissues alfalfa accumulation allantoin reflecting strength uricase activity remarkably reduced xylem saps stems nodules alfalfa plants exposed excessive ammonium suggesting application excessive ammonium generated negative effect symbiosis fixing nitrogen system due inhibition ammonium ion uricase activity nodules alfalfa result seems imply application excessive ammonium legume plants proposed avoid affecting ability fixing nitrogen nodules legume plants reasonable dose ammonium recommended effectively utilize fixed atmosphere legume plant production
previous research found patients gamma riiib variant increased risk intravenous immunoglobulin ivig resistance kawasaki disease previous studies revealed elevated gamma riia expression correlated susceptibility patients conducted research determine whether gamma receptors affect susceptibility ivig treatment response coronary artery lesions cal patients activating gamma riia inhibitory gamma riib methylation levels seven patients four control subjects examined using humanmethylation beadchip enrolled total patients control subjects fevers performed real time pcr determine riia riib expression levels well luciferase assay gamma riia found considerable increase methylation gamma riia gamma riib patients undergoing ivig treatment promoter methylation gamma riia inhibited reporter activity cells using luciferase assay gamma riib mrna expression levels found increase susceptibility cal formation ivig resistance gamma riia mrna expression levels significantly higher ivig resistant patients responded ivig pre treatment period furthermore gamma riia iib mrna expression ratio considerably higher patients cal without cal gamma riia gamma riib demonstrated increased methylation levels patients underwent ivig treatment gamma riia expression influenced ivig treatment response patients gamma riia iib mrna expression ratio greater patients cal formation
autoimmune diseases share common immunopathogenic mechanisms autoimmune tautology explain clinical similarities among well familial clustering guillain barre syndrome gbs autoimmune peripheral neuropathy recently associated zika virus zikv infection based series cases review article provides comparative analysis gbs associated zikv infection contrasted general characteristics gbs light autoimmune tautology including gender differences prevalence subphenotypes polyautoimmunity familial autoimmunity age onset pathophysiology ecology genetics ancestry treatment elsevier rights reserved
manganese essential nutrient human metabolism however studies conducted establish dietary recommended intake dri manganese purpose study provide data inform manganese intake level address analyzing manganese intake young korean adults evaluating blood levels estimated manganese balance selected subjects average age total subjects years men years women average daily energy intake kcal men kcal women addition daily manganese intake men women manganese intake subjects lower tolerable upper intake manganese intake excretion urine feces retention amount retention rate selected subjects respectively significant difference men women except urinary excretion men women manganese intake positively related intakes food energy protein fat carbohydrate also manganese retention amount positively related intakes energy protein fat results show food intake energy intake important factors manganese intake retention
transformation polyp medusa one interesting processes life cycle cnidarians polyps class scyphozoa transformation occurs form strobilation transverse fission polyps formation discoidal ephyrae present endogenous regulation strobilation one scyphozoans aurelia aurita investigated methods molecular biology fuchs however still unclear key environmental factors induce process main purposes review summarize literature data conditions strobilation aurita occurs nature laboratory try identify environmental factors likely play signaling role strobilation
pentyl quinolinyl ester indole carboxylic acid fluoropentyl quinolinyl ester indole carboxylic acid new synthetic cannabinoids quinoline substructure first marketed substances ester bond linkage human metabolism data currently available making difficult document intake urine analysis complicating assessment drugs pharmacodynamic toxicological properties incubated mol pooled cryopreserved human hepatocytes analyzed samples tripletof high resolution mass spectrometer data acquired via tof scan followed information dependent acquisition triggered product ion scans mass defect filtering mdf accurate mass full scan metabolite datasets analyzed multiple data processing techniques including mdf neutral loss product ion filtering predominant metabolic pathway ester hydrolysis yielding wide variety fluoro pentylindole carboxylic acid metabolites twenty metabolites metabolites identified majority generated oxidation without glucuronidation oxidative defluorination occurred forming metabolites compounds underwent epoxide formation followed internal hydrolysis also produced cysteine conjugate human hepatic metabolic profiles generated pentylindole carboxylic acid hydroxypentyl pentanoic acid fluoropentylindole carboxylic acid pentanoic acid hydroxy metabolite oxidation quinoline system likely best targets incorporate analytical methods urine document intake
gastroesophageal malignancies make significant growing segment newly diagnosed cancers approximately patients cancers die within years diagnosis means effective treatments malignancies need found currently targeted therapies minimal role disease group intensive study molecular biology cancers relatively new ongoing venture already led significant increase understanding malignancies understanding although still limited potential enhance ability develop targeted therapies conjunction ability identify actionable gene mutations perform genomic profiling predict drug resistance several cell surface growth factor receptors found play prominent role cancer cell signaling discovery led approval agents within last years trastuzumab anti human epidermal growth factor receptor monoclonal antibody used first line treatment positive cancers ramucirumab anti vascular endothelial growth factor receptor vegfr monoclonal antibody currently used later lines therapy review discusses current state molecular testing cancers along known molecular biology current investigational treatments development trastuzumab ramucirumab represents significant advance ability make use tumor molecular profiles understanding impact molecular aberrations drug effectiveness disease outcomes increases anticipate improved therapy patients cancers
mesenchymal stem cells mscs established isolation various tissue sources including bone marrow synovial fluid recently synovial fluid derived mscs reported multi lineage differentiation potential immunomodulatory features indicates cells used tissue engineering systemic treatments study presents protocol simple non invasive isolation mscs derived bone marrow synovial fluid minipigs analyze cell surface markers cell phenotyping vitro culturing using sexually mature six month old minipigs bone marrow extracted iliac crest bone using bone marrow extractor synovial fluid aspirated femorotibial joint procedures collection samples sources non invasive protocols effective isolation mscs harvested cell sources creating vitro culture conditions expand stable mscs minipigs application systemic autologous treatments provided cell phenotyping cell surface markers cells analyzed using flow cytometry results mscs isolated synovial fluid minipigs showed synovial fluid derived mscs similar morphology cell phenotype bone marrow derived mscs therefore non invasively obtained synovial fluid valuable source mscs
citrus tristeza virus ctv major pathogen citrus single dominant gene ctv present trifoliate relative citrus poncirus trifoliata confers broad spectrum resistance ctv refinement genetic maps delimited gene region comprising ten candidate ctv resistance genes ten candidate genes individually cloned agrobacterium based binary vector transformed three ctv susceptible grapefruit varieties two candidate genes exclusively expressed transgenic plants poncirus trifoliata five genes also expressed non transformed citrus controls northern blotting ctv derived probe assessment infection virus inoculated plants span three growth periods comprising six eight weeks indicates either absence initiation infection slow spread plant lines initial appearance infection subsequent obliteration plant lines limited genome walk downstream form gene based sequence identity poncirus citrus indicates promoter identity two varieties upstream downstream sequencing indicates presence methyl transferase copia like gene respectively citrus instead amino acid transporter like gene upstream sugar transporter like gene downstream poncirus possibility recombinations resistance locus citrus need consistent monitoring virus infection gene expression transgenic citrus trees discussed
background currently technology called clearfield used development crops resistant herbicides inhibit enzyme acetohydroxy acid synthase ahas ahas first enzyme biosynthetic pathway produces branched chain essential amino acids valine leucine isoleucine therefore multiple copies ahas gene might interest breeding programs targeting herbicide resistance work characterization ahas gene accomplished chenopodium quinoa regalona baer cultivar cloning sequencing southern blotting conducted determine number gene copies results presence multiple copies ahas gene shown previously several species described six copies ahas gene confirmed southern blot analyses cqhas cqahas variants showed highest homology ahas mrna sequences found database third copy cqahas shared similar fragments cqahas cqahas suggesting duplication homeologous chromosomes pairing conclusions presence multiple copies gene ahas shows gene duplication common feature polyploid species evolution addition knowledge first report interaction sub genomes quinoa pontificia universidad catolica valparaiso production hosting elsevier rights reserved
potential chemopreventive agents exist foods artepillin brazilian propolis investigated effects colon carcinogenesis found artepillin bioavailable antioxidant could incorporated intestinal caco hepatic hepg cells without conjugation inhibited oxidation intracellular dna artepillin added human colon cancer widr cells dose dependently inhibited cell growth inducing arrest events involved decrease kinase activity complex cyclin cyclin dependent kinase levels retinoblastoma protein phosphorylated ser inhibitors complex cip kip increased protein level hand northern blotting showed artepillin affect expression kip mrna according experiments using isogenic human colorectal carcinoma cell lines artepillin failed induce arrest cip deleted hct cells wild type hct cells artepillin appears prevent colon cancer induction cell cycle arrest stimulating expression cip useful chemopreventing factor colon carcinogenesis wiley liss inc
last decades increased consumer interest fatty acid composition ruminant meat due content saturated fas implicated diseases associated modern life however recent studies questioned recommendations reduce intake fat saturated fas cholesterol means reducing risk cardiovascular disease interestingly ruminant meat bioactive lipids reported positive effects human health order improve muscle fat composition human health standpoint oilseeds plant oils marine oils used ruminant diets hand molecular mechanisms play important role alteration composition muscle fat genetics offer wide range possibilities improvement muscle fat composition identifying different loci underlying expression quantitative traits significant progress made characterizing influence diet composition ruminant meat use genetic tools favor genotypes could maximize genetic potential diet society chemical industry
background numerous diseases related free radicals overproduction oxidative stress botanical preparations possess multitude bioactive properties including antioxidant potential mainly related presence phenolic compounds however mechanisms action phytochemicals vivo effects bioavailability bio efficacy still need research scope approach present report aims provide critical review aspects related vivo antioxidant activity phenolic extracts compounds plant origin key findings biological functions beyond human metabolism discussed comparing vivo vitro studies also focusing conditioning factors phenolic compounds bioavailability bioefficacy furthermore upcoming perspective use phytochemicals life expectancy promoters anti aging factors human individuals provided conclusions overall despite advances study biological potential numerous natural matrices still remains hot topic among scientific community fact available knowledge responsible phytochemicals biological potential mechanisms action establishment therapeutic prophylactic doses even occurrence biochemical interrelations considerable scarce elsevier ltd rights reserved
background high mobility group proteins hmga abundant rapidly dividing transformed cells group proteins regulating tumorigenesis tumor invasion increased expression hmga hmga reported various benign malignant tumors aim present study analyze expression hmga hmga proteins retinoblastoma methods protein expression hmga hmga formalin fixed retinoblastoma tissues performed immunohistochemistry mrna expressions analyzed fresh primary enucleated retinoblastoma samples semiquantitative reverse transcription polymerase chain reaction results correlated clinicopathologic parameters results immunohistochemical analysis hmga hmga seen retinoblastoma cases respectively mrna expressions hmga hmga found respectively mrna results correlated well immunostaining results expression hmga hmga significantly associated choroidal invasion poor tumor differentiation conclusions hmga hmga proteins may contribute tumorigenesis expression hmga hmga predicts poor prognosis could serve therapeutic target management experiments needed determine role proteins therapeutic targets tumorigenesis
objective primary cultivation clinical specimens human cervical cancer main side population cells isolated biological characteristics analyzed methods clinical specimens human cervical tissue cultured get primary cells staining hoechst flow cytometry used sorting get main side population cells molecular biology morphology tumorigenicity compared hela cells results primary cervical cancer side population cells isolated successfully two cells obvious tumor cell morphology beta integrin related markers expressed tumorigenicity side population cells significantly higher main group cells distribution cytoskeleton expression associated tumor markers affected tumorigenesis two cells conclusion side population cells cultured isolated clinical specimens human cervical cancer characteristics tumor stem cell used study targeted therapy cervical cancer
controversies stem cell therapy cardiovascular regeneration repair highlight need back root problem analyze reasons current ideological stagnation technological advancements often advocated overcome scientific stalemate however technology suffice without clear physiological understanding stem cell biology component general feedback response injury viewpoint opines endogenous mechanisms repair incompletely understood research needed humans experimental models dissect role stem cells pathogenesis cardiovascular diseases
hallmark humoral immunity generate functional ascs synthesize secrete abs specific antigen pathogen used host defense quantitative determination functional status humoral immune response individual serum abs circulating ascs commonly measured functional readouts humans peripheral blood convenient readily accessible sample used determination humoral immune response elicited host cells distinct cell subsets including ascs isolated directly peripheral blood via selection lineage specific conjugated microbeads via cell sorting flow cytometry moreover purified naive memory cells activated differentiated ascs culture functional activities ascs contribute secretion quantified elispot assay converges enzyme linked immunoabsorbance assay elisa western blotting technologies enable enumeration individual ascs singlecell level practice elispot assay increasingly used evaluate vaccine efficacy ease handling large number blood samples methods isolating human cells peripheral blood differentiation cells ascs vitro employment elispot quantification total igm igg ascs described
spite excellent properties supercritical enzyme catalyzed reactions destabilizing effects molecules enzyme structure limits industrial applications green solvent field biocatalysis based substantial role charged surface residues lysines enzyme inactivation introduced first time post translational modifications ptms famous concept molecular biology protein stabilization strategy supercritical condition lysine groups modified using ptm templates find exact mechanism enzyme inactivation supercritical explore new way protein stabilization solvent used simulation common tool situ examining enzyme structure supercritical fluids investigation structural consequence modifications different modifications including acetylation methylation phosphorylation carboxylation applied model enzyme comparison calb structure supercritical acetylated enzyme also simulated aqueous solvent interestingly acetylation lysine residues prevents enzyme denaturation high temperatures water agreement experimental observation aqueous solution however acetylation useful stabilization enzyme supercritical contrast methylation carboxylation efficiently stabilize enzyme supercritical phosphate groups phosphorylated lysines destabilize enzyme formation excess hydrogen bonds inappropriate groups perturb enzyme conformation moreover found modification surface arginine residues satisfactory stabilization enzyme finding supports mechanism lipase inactivation direct interaction molecules lysine residues formation carbamates think new exploration open new window developing enzyme catalyzed mechanism enzyme inactivation scco elsevier rights reserved
dozens murine models indolent aggressive cell lymphomas generated date include manifesting chronic lymphocytic leukemia cll diffuse large cell lymphoma dlbcl well xenografts mantle cell lymphoma mcl models led improved understanding disease etiology cell biology immunomodulation importance tumor microenvironment despite efforts cll dlbcl mcl considerably little progress toward model splenic marginal zone lymphoma smzl accomplished herein describe similarities differences cll mcl smzl highlight effective murine models mimic disease two former hopes informing potential model latter time writing review precise molecular events smzl remain determined treatment regimen remains identified therefore based efforts put forth cell lymphoma field throughout past three decades established role caveolin cell biology oncogene tumor suppressor recurrent deletion loss heterozygosity loh many cancers make recommendations murine model smzl
aim investigate molecular mechanism functional consequences heme oxygenase activation lansoprazole endothelial cells macrophages methods expression mrna analyzed northern blotting western blotting used determine ferritin protein levels nadph dependent reactive oxygen species ros formation measured lucigenin enhanced chemiluminescence promoter activity mouse fibroblasts stably transfected gene drives expression reporter gene luciferase assessed using vivo bioluminescence imaging results lansoprazole increased mrna levels endothelial cells protein levels macrophages addition lansoprazole induced ferritin protein levels cell systems moreover induction antioxidant proteins ferritin lansoprazole followed decrease nadph mediated ros formation radical scavenging properties lansoprazole diminished presence inhibitor chromium mesoporphyrin induction gene expression lansoprazole related oxidative stress activation mitogen activated protein kinase pathway however phosphatidylinositol kinase inhibitor showed concentration dependent inhibition mrna promoter activity conclusion activation ferritin may account gastric protection lansoprazole dependent pathway blocked wig press baishideng rights reserved
properly regulated immunity requires precise integration activating inhibitory signals lymphocytes cells express antigen specific activating receptor cell antigen receptor bcr inhibitory receptors gamma riib exercise checkpoint control cell activation moreover following bcr engagement recruits proteins amplify bcr signaling initiates negative feedback loop recruiting proteins inhibit bcr signaling initial bcr signaling mediated protein tyrosine kinases lipid kinases inhibitory receptors directly antagonize actions enzymes recruiting protein tyrosine phosphatases lipid phosphatases positioning close actively signaling bcrs previously thought inhibitory receptors gamma riib essential bringing phosphatases near bcr issue european journal immunology manno show tripartite inhibitory module consisting adaptor proteins dok grb lipid phosphatase ship binds directly activated bcrs limits mobilization required lymphocyte activation reveals bcr activating inhibitory receptor one activates signaling enzymes initiating negative feedback loop prevents excessive signaling
squamous cell carcinoma head neck one common cancer types worldwide initiates epithelial lining upper aerodigestive tract instances consequence tobacco alcohol consumption treatment options based conventional therapies targeted therapies development limited efficacy due multiple genetic alterations typically found cancer type natural products derived plants often possess biological activities may valuable development new therapeutic agents cancer treatment several genera family celastraceae studied context review reports studies chemical constituents isolated species celastraceae family targeting cancer mechanisms studied date results correlated molecular characteristics head neck squamous cell carcinoma attempt identify constituents potential application treatment complex disease molecular level
background differentiating pulmonary venoocclusive disease pvod pulmonary capillary hemangiomatosis pch idiopathic pulmonary arterial hypertension ipah heritable pulmonary arterial hypertension hpah important clinically mutations eukaryotic translation initiation factor alpha kinase eifak cause heritable pvod pch whereas mutations genes cause hpah aim study describe frequency pathogenic eifak mutations patients diagnosed clinically ipah hpah methods sanger sequencing deletion duplication analysis performed detect mutations bone morphogenetic protein receptor type bmpr gene patients diagnosed north american medical centers ipah hpah bmpr mutation negative patients sequenced mutations four genes acvrl eng cav kcnk known cause hpah patients negative mutations known pah genes sequenced mutations eifak assessed pathogenicity eifak mutations reviewed clinical characteristics patients pathogenic eifak mutations results pathogenic bmpr mutations identified patients ipah patients hpah novel homozygous eifak mutation identified patients diagnosed hpah novel eifak mutation homozygous two sisters severe pulmonary hypertension none patients ipah biallelic eifak mutations conclusions pathogenic biallelic eifak mutations rarely identified patients diagnosed hpah identification pathogenic biallelic eifak mutations aid clinicians differentiating hpah heritable pvod pch
cytochrome cyp cypb human cyp isoform found variable amounts liver organs known inducible polymorphic wide range xenobiotic substrates studies cyp date concentrated heavily clinical drugs present communication however concentrate role metabolism environmental xenobiotics term environment used broadest sense include natural ecosystems agroecosystems well industrial indoor domestic environments essence excludes clinical drugs drugs abuse many chemicals including agrochemicals industrial chemicals serve substrates inhibitors inducers cyp activities often modified existence polymorphic variants metabolism based interactions environmental chemicals discussed well emerging possibility metabolic interactions environmental chemicals clinical drugs elsevier inc rights reserved
growing evidence supports idea species diverge presence gene flow however mostmethods phylogeny estimation consider process despite fact ignoring gene flow known bias phylogenetic inference furthermore studies consider divergence gene flow typically estimating rates gene flow using isolation migration model rather evaluating scenarios gene flow divergence gene flowor secondary contact represent different types diversification investigation aim infer recent phylogenetic history clade western long eared bats evaluating number different models parameterize gene flow variety ways utilize phrapl new tool phylogeographic model selection compare fit broad set demographic models include divergence migration among myotis evotis thysanodes keenii genomic data set consisting loci ultraconserved elements used explore models three steps using incremental design successive set informed thus focused previous set models specifically three steps assess whether gene flow modeled identify best topologies infer directionality migration using best topologies iii estimate timing gene flow best model aic model weight similar included two divergence events evotis thysanodes keenii accompanied gene flow initial stages divergence results provide striking example speciation gene flow evolutionary lineage
hepatitis virus hbv infection major global health challenge hbv cause significant morbidity mortality establishing acute chronic hepatitis approximately million people worldwide chronically infected billion people exposed hbv since discovery hbv advances understanding hbv virology immunology translated effective vaccines therapies hbv infection although current therapies successfully suppress viral replication rarely succeed viral eradication recent discoveries hbv virology immunology provide exciting rationales novel treatment strategies aiming hbv cure
plant virus ecology mainly focuses upon populations interactions host plants within environment subject includes interesting insights many factors affect virus behavior population virus vector interactions biodiversity host plants genotypes involved moreover achievements field molecular ecology application recent molecular biology techniques included enhance strength understanding economically important virus populations growth world wide spread virus infection results direct indirect effect insect vectors evolution changes life cycles health interacting behaviors support spread similarly description recent information plant viruses disseminate towards important agro ecological zones naturally managed vegetations factors play important role ecological aspects also included review modern era science technology requires better understanding movement viruses directions become highly important issue levitate kinds aspects thus making plant virus ecology exciting research discipline future
background uncoupling protein ucp suggested inhibit mitochondrial production reactive oxygen species ros decreasing mitochondria membrane potential experimental acute pancreatitis associated increased ucp expression whereas ucp deficiency retards regeneration aged mice acute pancreatitis addressed biological molecular functions ucp pancreatic stellate cells pscs involved pancreatic wound repair fibrogenesis methods pscs isolated months old aged ucp mice animals wild type strain cbl proliferation cell death assessed employing trypan blue staining bromo deoxyuridine incorporation assay intracellular fat droplets visualized oil red staining levels mrna determined pcr protein expression analyzed immunoblotting immunofluorescence analysis intracellular ros levels measured dichlorofluorescin diacetate expression senescence associated beta galactosidase beta gal used surrogate marker cellular senescence results pscs derived ucp mice proliferated lower rate cells mice agreement observation ucp inhibitor genipin displayed dose dependent inhibitory effects psc growth interestingly ros levels pscs differ two strains pscs derived ucp mice senesce faster corresponding cells pscs ucp mice animals also indistinguishable respect activation dependent loss intracellular fat droplets expression activation marker alpha smooth muscle actin type collagen autocrine paracrine mediators interleukin transforming growth factor beta conclusions reduced proliferative capacity psc aged ucp mice may contribute retarded regeneration acute pancreatitis apart slower growth psc ucp mice displayed functional abnormalities antifibrotic potential ucp inhibitors deserves attention
background recent advances basic knowledge tissue damage regeneration pathology combined remarkable progress stem cell biology prospect clinical tissue repair strategies tangible reality tried describe better view mesenchymal stem cell msc mechanisms wound healing tissue regeneration sending ideas next advanced therapies content sustaining injury whether minor major part every organism life therefore efficient response mechanisms damage developed wound healing perplexing multi step processes divided three major phases inflammation proliferation scar formation remodeling though compartementalization process discrete stages give illusion simplicity reality much complicated efficient healing occur complex interactions multiple cell types soluble factors extracellular matrix components required rebuild tissue even optimal conditions healing process drives fibrosis scar latest technology makes huge difference wound healing process stem cell therapy offers novel approach many diseases summary wound healing therapies continue rapidly evolve advances basic science engineering research heralding development new therapies well ways modify existing treatments stem cell based therapy one promising therapeutic concepts wound healing advances stem cell biology enabled researchers clinicians alike access cells capable actively modulating healing response
optical coherence tomography oct valuable tool cross sectional observation analysis three dimensional biological tissues histological observation important clinically however resolution technology approximately study optical coherence microscopy ocm tomographic system combining oct technology microscopic technique constructed observing cells individually resolution submicrometer level cells tissues fabricated cell sheet technology observed ocm importantly cell nuclei cytoplasm could clearly distinguished time dependent dynamics cell sheet tissues could observed detail additionally migration cells bioengineered tissue also detected using ocm metal labeled cells bovine aortic endothelial cells niht murine embryonic skin fibroblasts actively migrated within tissues study showed ocm system would valuable tool fields cell biology tissue engineering regenerative medicine wiley periodicals inc biomed mater res part appl biomater
background toll like receptor tlr driven tissue response may promote neoangiogenesis tumour growth mechanisms poorly understood methods investigated expression levels tlr associated mirnas colorectal carcinoma crc tissues cell lines using real time pcr northern blotting western blotting survival curver generated log rank test role tlr signalling tumour invasion migration determined transwell analysis kits results observed tissues crc patients express relatively high levels tlr targeting tlr markedly reduces invasion migration crc cells also found mir putative tumour suppressor regulated crc tissues reduces invasion migration crc cells primarily via tlr utilising xenograft mouse model demonstrated expression mir inhibits crc cell colonisation vivo conclusion mir blocks tlr signalling pathway human crc cells knowledge may pave way new clinical applications utilising mir mimics treatment patients crc
commercial vaccines currently available enterovirus infection oral virus like particle vlp vaccines regarded better choice prevention food borne diseases compared injected whole virus vaccines unfortunately application oral vlp vaccines produced transgenic plants limited due concerns gene contamination alternatively using transgenic mushrooms retains advantages transgenic plants tremendously reduce risks gene contamination polycistronic expression vectors harboring glyceraldehyde phospho dehydrogenase promoter codrive structural protein protease using peptide porcine teschovirus constructed introduced flammulina velutipes via agrobacterium tumefaciens mediated transformation analyses genomic pcr southern blotting pcr showed genes integrated chromosomal dna single insertion resulting mrnas transcribed western blotting analysis combined demonstrated vlps composed four subunit proteins digested polyprotein protease use single particle electron microscope images particles diameter similar viron used reconstruction protrusions observed surface class averages reconstruction vlps obtained conclusion vlps successfully produced transgenic velutipes using polycistronic expression strategy indicates approach promising development oral vaccines produced mushrooms
heterozygosity base pair deletion delta gag tora torsina one common causes hereditary dystonia review highlight current understanding mutation causes disease research spanning structural biochemistry cell science neurobiology several model organisms know homozygosity dgag effects tora implicating partial loss function mechanism dgag disease state addition torsina loss specifically affects neurons mice even though gene broadly expressed apparently differential expression homologous torsinb furthermore certain neuronal subtypes severely affected torsina loss interestingly include striatal cholinergic interneurons display abnormal responses dopamine several tora animal models also progress understanding torsina molecular cell biology structural basis dgag inhibits torsina atpase activity defined although mutant torsina delta gag protein also displays characteristics suggesting contributes dystonia gain function mechanism furthermore consistent relationship emerging torsin dysfunction membrane biology including evolutionarily conserved regulation lipid metabolism considered together findings provide major advances toward understanding molecular cellular neurobiological pathologies dyt tora dystonia hopefully exploited new approaches treat disease international parkinson movement disorder society
abiraterone acetate potent inhibitor human cytochrome cypa alpha hydroxylase iyase clinically used combination prednisone treatment castration resistant prostate cancer although many studies documented potency abiraterone abi variety vitro vivo systems several species exact potency abi human cypa enzyme yet determined structural requirements high potency steroidal azole inhibitors established synthesized abi analogs differing ring substitution patterns alpha hydroxy delta abi keto delta abi keto alpha abi alpha hydroxy alpha abi measured spectral binding constants using purified modified human cypa along determination constants applying native human cypa enzyme yeast microsomes compounds well ketoconazole abi keto delta abi keto alpha abi alpha hydroxy alpha abi type spectral changes gave best fit quadratic equation since experiments values much lower ketoconazole alpha hydroxy delta abi values respectively inhibition experiments showed mixed inhibition patterns values abi dissociation cypa abi complex incomplete slow dissociation complex remaining conclude abi related steroidal azoles keto delta abi keto alpha abi alpha hydroxy alpha abi also mimic natural substrates extraordinarily potent inhibitors human cypa whereas alpha hydroxy delta abi moderately potent comparable ketoconazole elsevier ltd rights reserved
mass spectrometry based proteomic strategies profile expression level proteins response external stimuli nicotine affects diverse cellular pathways however nicotine induced alterations global proteome across human cell lines fully elucidated measured perturbations protein levels resulting nicotine treatment four cell lines hek hela pasc syy single experiment using tandem mass tags tmt plex high resolution mass spectrometry quantified proteins across cell lines nicotine increased abundance proteins fold greater cell lines likewise considering proteins altered levels least three four cell lines regulated one regulated gene ontology analysis revealed similar proteins membrane bound functioned transmembrane signaling receptor activity highlighted proteins including app aplp laptmb ncoa dysregulated nicotine cell lines investigated may implications downstream signaling pathways particularly autophagy using outlined methodology studies additional including primary cell lines provide evidence alterations levels proteins indeed general response nicotine thereby merit investigation
abilities tumor cells invade metastasize frequent causes death cancer patients studying mechanisms cell motility alterations acquisition enhanced metastatic potential result transformation important aspect current cell biology initial determinant step cell motility formation active cell edge protrusions based arp dependent actin polymerization used three different cell systems examples different models tumor transformation study alteration redistribution protrusive activity caused transformation fibroblasts analyzed relationships detected alterations acquisition increased invasive potential cells active edge untransformed fibroblasts occupies cell perimeter concentrated cell front well pronounced stable regions lateral cell edges tumor transformation causes redistribution protrusive activity fibroblasts irrespective origin nature transforming agents length active edges significantly increases total perimeter fibrosarcoma cells tumor origin cells practically stable edges intensity protrusive activity transformed cells also increased single transformed cells show decrease directionality rate migration substrate without special stimulation instead gain capacity migrate invade matrigel abilities increase parallel intensification edge activity showed invasive abilities associated activation matrix metalloproteinases studied cell systems data demonstrate increase length active edge could considered additional feature cell transfoimation together reduction stress fiber focal adhesions excessive protrusive activity results development explorative migration tumor cells
although understanding relationship posttraumatic stress disorder ptsd brain structure function neural networks stress related systems genetics growing considerably less attention given biological markers predict evidence based ptsd psychotherapy outcomes systematic prisma informed review studies examined biomarkers predictors evidence based ptsd psychotherapy outcomes results provide preliminary evidence specific structural functional neural systems involved information processing glucocorticoid sensitivity metabolism part hypothalamic pituitary adrenal axis response stress heart rate involved fear habituation gene methylation certain genotypes associated serotonin glucocorticoids predicted positive response ptsd treatment pre treatment biomarkers associated processes integral ptsd treatment affecting fear learning extinction cognitive restructuring information processing emotional processing interoceptive monitoring identifying pre treatment biomarkers predict treatment response may offer insight mechanisms psychological treatment provide foundation improving pharmaceutical augmentation treatment inform treatment matching published elsevier ltd
invertebrate immune priming growing field immunology phenomenon refers ability invertebrates generate vigorous immune response second encounter specific pathogen occur within across generations although precise mechanism elucidated suggested methylation dna cornerstone phenomenon using novel method analytical chemistry reversed phase liquid chromatography procedure beetle tenebrio molitor model system find evidence support hypothesis taking account percentage methylated cytosine entities dna mdc within across generations however found lower percentage methylated cytosine entities rna within across generations immune priming experiments adults bacteria micrococcus lysodeikticus larvae fungus metarhizium anisopliae knowledge first report suggesting role differential methylation rna immune priming within generations
similarities differences cell cycle components apoptosis cytoskeleton related molecules among mouse skin fibroblast cells msfs mouse squamous cell lung carcinomas sqclcs mouse embryonic stem cells mescs important determinants behaviour differentiation capacity cells reveal apoptotic pathways examine distribution role cell cycle cell skeleton comparatively would necessitate tumour biology stem cell biology assessed together terms oncogenesis embryogenesis primary objectives study investigate effects flavopiridol cell cycle inhibitor geldanamycin heat shock protein inhibitor mouse somatic tumour embryonic stem cells specifically focusing alterations cytoskeletal proteins cell polarity motility well cell cycle regulators meet objectives expression several genes cell cycle analysis immunofluorescence staining intracellular cytoskeletal molecules performed untreated flavopiridol geldanamycin treated cell lines cytotoxicity assays showed sqclcs sensitive flavopiridol msfs mescs keratin keratin expressions increased dramatically whereas cell cycle regulatory genes decreased significantly flavopiridol treated msfs flavopiridol treated sqclcs displayed slight increase several cell cytoskeleton regulatory genes well cell cycle regulatory genes however gene expression profiles mescs affected flavopiridol treatment except cdca cytotoxic concentrations geldanamycin close cell lines cdkna increased gene geldanamycin treated msfs however expression levels cell cytoskeleton associated genes increased dramatically geldanamycin treated sqclcs results revealing differences molecular mechanisms embryogenesis carcinogenesis may prove crucial developing novel therapeutics specifically target cancer cells
detection single amino acid variants savs usually depends single nucleotide polymorphisms snps database describe novel method discovers savs proteome level independent snps data using mass spectrometry based novo sequencing algorithm peptide candidates identified compared theoretical protein database generate savs pairing strategy followed database searching control false discovery rate human brain tissues confidently identify known novel protein variants diverse origins combined dna rna sequencing verify savs derived dna mutations rna alternative splicing unknown post transcriptional mechanisms furthermore quantitative analysis human brain tissues reveals several tissue specific differential expressions savs approach provides novel access high throughput detection protein variants may offer potential clinical biomarker discovery mechanistic research
ethylhexyl phthalate dehp reproductive developmental toxicant animals suspected endocrine modulator humans widespread exposure dehp general population patients additionally exposed dehp containing medical devices toxicokinetic metabolic knowledge dehp humans vital toxicological evaluation dehp also exposure assessments based human biomonitoring data secondary oxidized dehp metabolites like mono ethyl hydroxyhexyl phthalate mehp mono ethyl oxohexyl phthalate oxo mehp mono ethyl carboxypentyl phthalate mepp mono carboxymethyl hexyl phthalate mmhp valuable biomarkers dehp exposure represent major share dehp metabolites excreted urine four oxidized metabolites mehp immune external contamination possibly ultimate developmental toxicants long half times elimination make mepp mmhp excellent parameters measure time weighted body burden dehp mehp oxo mehp reflect short term exposure calculated daily dehp intake general population children children significantly higher exposed dehp adults exposures percentile day respectively scooped limit values like reference dose rfd day tolerable daily intake tdi day considerable degree fold oversteppings children give cause concern also detected significant dehp exposures voluntary platelet donors apheresis dual needle technique premature neonates exposed dehp times limit values depending intensity medical care median day percentile day
eccentric exercise training effective increasing muscle mass strength improving insulin sensitivity blood lipid profiles however potential muscle damage symptoms prolonged loss muscle function delayed onset muscle soreness may restrict use eccentric exercise especially clinical populations therefore strategies reduce eccentric exercise induced muscle damage eimd necessary extensive number scientific studies tried identify potential intervention modalities perform eccentric exercises without adverse effects present paper based narrative review current literature provides novel hypothesis ischemic preconditioning ipc extremities may reduce eimd ipc consists intermittent application short time non lethal ischemia extremity using tourniquet followed reperfusion discovered clinical settings attempt minimize inflammatory responses induced ischemia ischemia reperfusion injury injury surgery present hypothesis based morphological biochemical similarities pathophysiology skeletal muscle damage clinical surgery eimd even though primary origin stress differs injury eimd subsequent cellular alterations characterized intracellular accumulation increased production reactive oxygen species increased apoptotic signaling essential elements moreover incipient immune response appears similar injury eimd indicated infiltration leukocytes damaged soft tissue thus far ipc considered potential intervention strategy area cardiovascular orthopedic surgery provides significant impact soft tissue protection downregulation undesired excessive inflammation induced injury based known major impact ipc skeletal muscle physiology immunology present paper aims illustrate potential protective effects ipc eimd discussing possible underlying mechanisms elsevier ltd rights reserved
mast cells integral part immune system pleiotropic physiological functions body type abnormal stimuli causes mast cells receptors spur otherwise innocuous mast cells degranulate release inflammatory mediators like histamine cytokines chemokines prostaglandins mediators involved various diseases like allergy asthma mastocytosis cardiovascular disorders etc herein describe receptors involved degranulation mast cells broadly divided four categories protein coupled receptors ligand gated ion channels immunoreceptors pattern recognition receptors although activation pattern recognition receptors cause mast cell degranulation result cytokines production degranulation complex process involving cascade events like membrane fusion events various proteins like vamp syntaxins docks snap marcks furthermore described mast cell receptors antagonists agonists useful treatment myriad diseases like omalizumab anti ige antibody highly effective asthma allergic disorders treatment recently mechanistic insight ige uncovered matrix mettaloprotease inhibitor marimistat phase iii trial inflammation muscular dystrophy diseases zpl receptor antagonist phase clinical trial atopic dermatitis psoriasis jnj oral receptor antagonist phase clinical development asthma rheumatoid arthritis therefore research still inchoate stage uncover mast cell biology mast cell receptors therapeutic role myriad diseases elsevier rights reserved
background aims carotid artery plaque established marker subclinical atherosclerosis common patho mechanisms coronary artery disease cad hypothesized aimed identify genetic variants associated carotid plaque examine potential shared genetic basis cad methods investigating reliability plaque detection performed genome wide metaassociation study two independent cohorts life adult life heart carotid plaque score defined sum plaque load common carotid artery carotid bulb analyzed whether previously reported cad stroke loci also associated results identified two loci genome wide significance one locus known cad locus chromosome lead snp chi also describe novel locus chromosome within sfxn gene probable candidate lead snp chi addition known cad loci six known stroke loci associated nominal level significance conclusions showed reliable trait analyze genetics atherosclerosis two new loci genome wide significant association found observed non random overlap cad associations strengthens hypothesis shared genetic basis atherosclerotic manifestations elsevier rights reserved
micrornas mirnas comprise group small noncoding rna molecules thought contributed evolution vertebrate brain homogeneity diversity mirna mir well conserved invertebrates vertebrates expressed abundantly central nervous system cns identified mir medaka oryzias latipes investigated role neural development five candidate genes medaka precursor mir unlinked four different chromosomes differ nucleotide length sequences suggest generate functional mirnas conventional mirna biogenesis folding stem loop structures whole mount situ hybridization northern blotting revealed mature mir specifically expressed cns eyes starting two days post fertilization also examined sequences expression medaka polypyrimidine tract binding protein ptbp possible direct target mir utr medaka ptbp contains predicted binding motifs target sites mir gfp reporter assay target sites entire utr showed exogenous mir silences ptbp expression vivo study suggests medaka mir involved post transcriptional regulation target genes neural development medaka mir homologs may spatiotemporal roles different vertebrates
nicotinamide phosphoribosyltransferase nampt catalyzes first reversible step nad biosynthesis nicotinamide nam salvage enzyme designed efficient capture nicotinamide coupling atp hydrolysis assist extraordinary nam binding affinity formation nicotinamide mononucleotide nmn nampt provides mechanism replenish nad pool human metabolism addition role redox biochemistry nad fuels sirtuins sirts regulate transcription factors involved pathways linked inflammation diabetes lifespan nampt mediated lifespan expansion caused focus catalytic mechanism regulation inhibition nampt structural mechanistic inhibitor design contribute developing yet incomplete story nampt function although first generation nampt inhibitors entered clinical trials disappointing outcomes suggest powerful specific inhibitors needed understanding atp linked mechanism nampt catalytic site machinery may permit design improved nampt inhibitors efficient drugs cancer
advent atomic force microscopy afm provided powerful tool investigating behaviors single native biological molecules physiological conditions afm image conformational changes single biological molecules work sub nanometer resolution also sense specific interactions individual molecular pair piconewton force sensitivity past decade performance afm greatly improved makes widely used biology address diverse biomedical issues characterizing behaviors single molecules afm provides considerable novel insights underlying mechanisms guiding life activities contributing much cell molecular biology article review recent developments afm studies single molecule assay related techniques involved afm single molecule assay firstly presented progress several aspects including molecular imaging molecular mechanics molecular recognition molecular activities cell surface summarized challenges future directions also discussed
rheumatoid arthritis chronic inflammatory autoimmune disease multiple inflammatory cytokines involved pathogenesis interleukin particular significant positive correlation study investigated effect erythroid differentiation regulator erdr negatively regulated animal model inflammatory arthritis collagen induced arthritis cia dba mice treatment mice recombinant erdr significantly suppressed severity arthritis histologic features arthritic tissue serum levels anti collagen autoantibodies igg igg igga igm cia addition expression reduced affected synovium rerdr treated mice interestingly erdr treatment suppressed migration contrast pro migratory effect indicating therapeutic effects erdr cia inhibiting synovial fibroblast migration addition erdr inhibited activation erk key signaling pathway migration various cell types taken together data show rerdr exerts therapeutic effects inhibiting synovial fibroblast migration suggesting rerdr treatment might effective therapeutic approach
black pepper piper nigrum member family piperaceae indigenous india one widely used spices world paper report results attempts identify set genes differentially expressed leaves piper nigrum could facilitate targeted engineering valuable crop pcr based suppression subtractive hybridization ssh technique used generate leaf specific subtracted cdna library piper nigrum tester population leaf cdna subtracted root derived driver cdna efficiency subtraction confirmed pcr analysis using housekeeping gene actin sequence analysis almost clones showed homology metallothionein type gene predominance metallothionein transcripts leaf confirmed using real time pcr analyses northern blot possible role metallothionein type homologues leaf discussed along feasibility using ssh technique identification number tissue specific genes piper nigrum
study aims determine prevalence human immunodeficiency virus hiv infections hepatitis virus hbv hepatitis virus hcv infections among blood donors blood donor center mohammed military teaching hospital conducted retrospective study among military blood donors aged years male predominance pre donation interview first selection barrier individuals risk biological screening performed liquid enzyme immunoassay technique using antibodies antigen fourth generation combined hcv hiv antigen antibody elisa enzyme linked immunosorbent assay test used blood donor center laboratory virology used technique performed duplicate confirm results tested samples prevalence rate hbv infections prevalence rate hcv infections prevalence rate hiv infections single case hbv hcv virus infection registered association hiv hbv hiv hcv hbv hcv hiv infections recorded low seroprevalence rates viral markers recorded study show improvement preventive measures donor selection screening tests registered prevalence encourages use combined reagent alternative molecular biology developing countries
terms familiar start solve test chromatin nucleases sucrose density gradient centrifugation melting point gel electrophoresis ethidium bromide autoradiography southern blotting northern blotting sanger sequencing restriction endonucleases exonucleases linker dna chloroform extraction nucleosomes nucleosomal histones histone nonhistone proteins laminin lamin solenoid dna methylation cpg islands histone acetylation centromere histone octamers beads string euchromatin heterochromatin
trees derivative products used societies around world thousands years contemporary construction tall buildings timber whole part suggests growing interest potential building wood scale previously attainable wood significant building material grown natural inclination building wood good environment conditions really case environmental benefits using timber straightforward although natural product large amount energy used dry process much come biomass tree requires investment plant always possible industry widely distributed among many small producers build wood skyscrapers timber good use natural resource aspects civil structural engineering large scale infrastructure would better use wood consider holistic picture ranging scale science cell wall engineering global policies could maximise forestry timber construction boon people planet
role sexual reproduction magnifying genetic diversity clonally propagated crops well documented whereas many studies emphasized importance perceptual distinctiveness role arousing farmers curiosity towards plants unusual morphological traits considered corollary perceptual indistinctiveness study investigated factors influence farmers behaviours towards selfsown volunteer seedlings cassava manihot esculenta crantz cross cultural survey gabon central africa interviews revealed farmers seven times likely spare seedlings resembled named landrace compared similarly farmers likely relax weeding pressures cassava volunteers believed volunteers resurgences old cuttings model fit significantly improved cultural factors accounted suggesting strong culture dependent differences among communities perception attitudes towards cassava volunteers analysis structure genetic diversity cassava landrace populations community level showed landraces included singleton genotypes even villages farmers imposed strongest weeding pressures suggesting always background incorporation cassava seedlings show channelling selective incorporation cassava seedlings morphologically indistinguishable familiar landraces perceptual selection favors recruitment sometimes deliberate often unconscious new genotypes plants germinating seeds contributes balancing disadvantages strictly clonal propagation maintaining landraces within consensual combinations perceptually distinct traits
rice stripe virus rsv insect borne tenuivirus economical significance endemic rice growing regions east asia exhibits genetic diversity yunnan province china gain insights molecular epidemiology evolution rsv recombination analyses conducted potential events detected four rna segments rsv bayesian coalescent method applied time stamped coding sequences gene nucleotide substitution rate divergence time estimated age calculations suggested first diversification event rsv isolates analyzed might take place early century rsv existed yunnan long notice surveys codon usage variation showed rsv genes influences mutational bias codon choice rsv conformed neither vector small brown planthopper host rice although former exerted dominant influence shaping codon usage pattern rsv addition cpg dinucleotide deficiency observed rsv elsevier inc rights reserved
histiocytic sarcoma histiocyte associated lymphoma hal mice difficult distinguish histologically studies multiple cases initially diagnosed hal allowed define round fusiform mixed cell types mac pax lacked markers sarcomas immune receptor genes germline configuration two subsets clonal populations lymphocytes first hal featured malignant lymphocytes admixed large populations normal appearing histiocytes second appeared composites lymphoma several cases suggestive myeloid lineage plasticity also observed
observe biological characteristic prognoses patients acute erythroleukemia ael results patients newly diagnosed ael january june department hematology shandong province chinese medicine hospital reviewed morphology immunology cytogenetics molecular biology flow cytometry analysis indicated highly expressed ael ael patients variety cytogenetic abnormalities patients complex karyotype abnormal involving chromosomes abnormalities chromosomes frequently involved common one accounting abnormal karyotype followed mutation analysis showed cebpa mutation ratio ael patients npmas initial induced remission rate ael compared mdsm survival analysis shown overall survival female better male overall survival time transplantation group significantly longer chemotherapy group years old group best years old group took second place years old group appeared worst patients aml dysplasia varying degrees granulocyte erythrocyte megakaryocyte series periodic acid shiff reaction staining polychromatic erythroblast ortho chromatic erythroblast specificity diagnosis ael ael unique biological features allogeneic hematopoietic stem cell transplantation could significantly improve poor prognosis
pioneers tumor immunology cancer immunotherapy including late william coley lloyd old championed potential immunotherapy century finally advances understanding fundamentals tumor immunology translating clinical success recent food drug administration approval several immunotherapies improve clinical outcomes across prostate cancer metastatic melanoma non small cell lung cancer lymphocytic leukemia tandem clinical successes new technologies high throughput dna rna sequencing genetic engineering streamlined vivo cell culturing paved way next generation immunotherapies provided new tools investigating potential biomarkers response existing therapies november annual meeting society immunotherapy cancer leaders tumor immunology cancer immunotherapy convened second annual sitc primer review current knowledge future directions field review key discussions across variety topics including innate immunity adaptive immunity dendritic cells adoptive cell therapy anti tumor antibodies cancer vaccines immune checkpoint blockade challenges immunotherapy monitoring immune responses immunotherapy clinical trial design
tripterygium wilfordii hook one valuable medicinal plants contains large variety active terpenoid compounds including triptolide celastrol wilforlide pharmacologically active secondary metabolites synthesized methyl erythritol phosphate mevalonate pathway isoprenoid biosynthetic system key step pathway isomerization dimethylallyl diphosphate isopentenyl diphosphate catalyzed isopentenyl diphosphate isomerase ipi present study full length cdna encoding ipi designate twipi genbank accession cloned suspension cultured cells wilfordii full length cdna twipi encoded polypeptide amino acids bioinformatics analysis showed deduced twipi sequence contained tntccshpl wgeheldy motif transcription level twipi suspension cells increased almost fivefold treatment methyl jasmonate elicitor functional color assay escherichia coli indicated twipi could promote accumulation lycopene encoded functional protein international union biochemistry molecular biology inc volume number pages
dinoflagellates key species marine environments remain poorly understood part large complex genomes unique molecular biology unresolved group relationships created taxonomically representative dataset dinoflagellate transcriptomes used infer strongly supported phylogeny map major morphological molecular transitions dinoflagellate evolution results show early branching position noctiluca monophyly thecate plate bearing dinoflagellates paraphyly athecate ones represents unambiguous phylogenetic evidence single origin group cellulosic theca show coincided radiation cellulases implicated cell division integrating dinoflagellate molecular fossil biogeochemical evidence propose revised model evolution thecal tabulations suggest late acquisition dinosterol group inconsistent dinoflagellates source biomarker pre mesozoic strata three distantly related fundamentally nonphotosynthetic dinoflagellates noctiluca oxyrrhis dinophysis contain cryptic plastidial metabolisms lack alternative cytosolic pathways suggesting free living dinoflagellates metabolically dependent plastids finding led propose general mechanisms dependency plastid organelles eukaryotes lost photosynthesis also suggests evolutionary origin bioluminescence nonphotosynthetic dinoflagellates may linked plastidic tetrapyrrole biosynthesis finally use phylogenetic framework show dinoflagellate nuclei recruited dna binding proteins three distinct evolutionary waves included two independent acquisitions bacterial histone like proteins
radiotherapy common therapeutic strategy used treat esophageal squamous cell carcinoma escc however tumor cells often develop radioresistance thereby reducing treatment efficacy aimed identify mechanisms escc cells develop radioresistance identify associated biomarkers eca cells exposed repeated radiation fraction total dose ecar cells mtt colony formation assays performed measure cell proliferation compare radiation biology parameters eca ecar cells cell cycle distributions apoptosis assessed flow cytometry reverse transcription quantitative polymerase chain reaction western blotting employed analyze expression hox transcript antisense rna hotair addition biomarkers epithelial mesenchymal transition emt cancer stem cells cscs ecar cells exhibited increased cell proliferation clone formation significantly higher radiobiological parameters compared parental eca cells ecar cells also exhibited significantly decreased accumulation phase increased accumulation phase additionally apoptosis rate significantly lower ecar cells parental eca cells finally hotair expression levels snai beta catenin mrna protein expression levels significantly higher whereas cadherin levels significantly lower ecar cells eca cells therefore findings demonstrated radioresistance affected expression hotair biomarkers emt cscs
genetic transformation successfully established producing transformed adventitious shoots calli japanese pear pyrus pyrifolia nakai using cotyledons explants cotyledons five cultivars cultivated agrobacterium tumefaciens strain lba carrying pbin sgfp contained green fluorescent protein gene neomycin phosphotransferase gene order increase transformation efficiency sonication ethylenedioxybis ethylamine tetraacetic acid egta treatments applied could produce physical wounds across tissue prevent plant defense reaction respectively green fluorescent protein gfp fluorescence evaluated two weeks five months agrobacterium inoculation measures transient stable transformations respectively result sonication significantly increased transient stable expression gfp fluorescence whereas egta treatment show positive effect either regenerated plantlets obtained one plant regenerated agenosho shinanashi showed stable gfp fluorescence plant confirmed transformant pcr genomic southern blotting three transformed regenerated shoots myb gene showed red color derived imamuraaki transformation method transformation system study shown reproducible since plural transformants obtained
population genetic structure freshwater organisms depends upon arrangement streams extent connectivity ponds marshes well terrestrial dispersal capability assessed population genetic structure patterns gene flow total european pond turtles emys orbicularis sampled ponds along strymon river northern greece analysis mitochondrial dna mtdna control region sequences nuclear dna species specific microsatellite loci recorded high level genetic diversity suggested gene flow following recent history colonization pattern advocated overall low level nuclear dna differentiation limited significant sequence divergence among mtdna haplotypes significant level genomic admixture across central ponds high proportions individual turtle genomes downstream upstream ponds belonging genetic cluster defined bayesian analysis male mediated gene flow emphasized role strymon river turtle dispersal rule short distance terrestrial movements work contributes fine scale population structure studies freshwater organisms habitats affected human activities provides information help devise management conservation plans orbicularis lake kerkini national park wetlands system
purpose study determine whether hmg coenzyme hmg coa reductase inhibition would attenuate early pressure overload induced activation extracellular matrix genes left ventricle heart sprague dawley rats randomized treatment groups sham operation vehicle aortic constriction vehicle rosuvastatin rsv rsv rats injected normal nacl rsv daily beginning day surgery killed days surgery hemodynamic measurements made open chest anesthetized state levels transforming growth factor beta tgf beta procollagen fibronectin mrna measured northern blotting induced similar increase weight days altered rsv treatment expression tgf beta mrna similar fold similar fold similar fold greater respectively hearts compared rats days post operation significantly decreased either dose rsv inhibition hmg coa reductase attenuate pronounced aortic constriction induced increases early expression tgf beta model acute pressure overload rat heart
fitness depends resources individuals acquire allocation resources traits influence survival reproduction optimal resource allocation differs females males consequence fundamentally different reproductive strategies however traits common genetic basis sexes conflicting selection sexes resource allocation constrain evolution optimal allocation within sex generate trade offs fitness sexual antagonism intralocus sexual conflict theory resource acquisition allocation provides influential framework linking genetic variation acquisition allocation empirical evidence trade offs distinct life history traits however models considered emergence trade offs within context sexual dimorphism expected particularly common extend acquisition allocation theory develop quantitative genetic framework predicting genetically based trade offs life history traits within sexes female male fitness models demonstrate empirically measurable evidence sexually antagonistic fitness variation depend upon three interacting factors may vary populations genetic variances sex covariances resource acquisition allocation traits condition dependent expression resource allocation traits sex differences selection allocation resource different fitness components
histone lys methylation important epigenetic modification regulates gene transcription humans ezh enhancer zeste homologue ezh enzymes capable catalysing methylation great interest understanding structure function relationships ezh genetic alterations enzyme thought play causal role number human cancers ezh challenging study active context multi subunit prc polycomb repressive complex vset viral lysine methyltransferase represents smallest protein unit capable catalysing methylation crystal structure minimal catalytic protein solved researchers suggested vset might prove useful ezh surrogate development active site directed inhibitors test proposition conducted comparative enzymatic analysis human ezh vset report although enzymes share similar preferences methylation diverge terms permissiveness catalysing methylation alternative histone lysine sites relative preferences utilization multimeric macromolecular substrates active site primary sequences importantly sensitivity inhibition drug like small molecules cumulative data led suggest ezh vset distinct active site structures despite commonality reaction catalysed two enzymes hence ezh vset pair enzymes represent example convergent evolution distinct structural solutions developed solve common catalytic need
enzyme kinetics quasi steady state assumption qssa proposed years plays important role simplifying systems equations derived chemical reactions enzymes five years ago proved qssa always true simplest model second elementary reaction irreversible called quasi steady state laws thus conclusions based qssa solid foundation irreversible case however chemical reactions always simple many life processes second elementary reaction reversible general irreversible case actually approximation important interesting study reversible case already attracted enzymologists long time basic assumption qssa general case appeared proved lasting years assumption paper
transient gene expression plant protoplasts powerful tool analyzing gene function performing biotechnical manipulations report isolation viable protoplastsfrom fruit flesh sweet cherry prunus avium hong deng polyethylene glycol peg mediated transient transfection using green fluorescent protein gfp marker gene investigated main factors affecting efficacy protoplast isolation transfection including composition enzymolysis solution enzymolysis time enzymolysis solution peg concentration transfection time protoplast isolation optimal tissue incubated enzymolysis solution composed cellulase pectolase mannitol resulting protoplast yield protoplasts fresh weight viability protoplast transformation efficiency measured transient expression gfp reporter gene transformation efficiency highest protoplasts incubated transfection medium containing peg min collectively work describes efficient protoplast isolation protoplast transient expression system used facilitate molecular biology research sweet cherry elsevier rights reserved
last years much work arsenic species urine samples directed toward determination reduced dimethylated arsenic species dma iii high toxicity perceived key role metabolism inorganic arsenic recent work however suggested dma iii may times misidentified chromatographic properties similar thio dimethylarsinate thio dma analyzed hplc icpms inductively coupled plasma mass spectrometry urine samples arsenic exposed women bangladesh total arsenic concentrations ranging found thio dma present samples concentrations ranging mostly trace amounts one sample contained cytotoxicity testing hepg cells derived human hepatocarcinoma indicated thio dma fold cytotoxic dimethylarsinate dma widespread occurrence thio dma urine arsenic exposed women suggests arsenical may also present urine samples far escaped detection work highlights need analytical methods providing specific determinations arsenic compounds future studies arsenic metabolism toxicology elsevier inc rights reserved
human liver microsomes hlms used simulate human xenobiotic metabolism vitro forensic clinical toxicology hlms popularly used study metabolism new designer drugs example work present automated online extraction system developed hlm experiments compared classical offline approach furthermore present studies metabolism cathinones eight metabolism previously reported metabolites identified based scans fifty three substances encompassing various classes drugs employed compare established offline new online methods metabolism following cathinones studied using new method methylenedioxy benzylcathinone benzedrone butylone dimethylcathinone ethylone flephedrone methedrone methylone methylethylcathinone naphyrone pentylone agreement offline online methods good total metabolites identified using offline method metabolites identified identified using online method metabolic pathways identified cathinones included reduction keto group desalkylation hydroxylation desmethylenation cathinones containing methylenedioxy moiety method provides straightforward approach identifying metabolites added library utilized clinical toxicological screening method performance method compares well established offline hlm procedure automated possible
role symmetric division stem cell biology ambiguous necessary injuries symmetric divisions occur often appearance tumours likely explore role symmetric asymmetric division cell populations propose mathematical model competition populations stem cell expansion controlled fully differentiated cells show optimal fraction symmetric stem cell division maximises long term survival probability organism moreover show optimal number stem cells tissue show number small enough reduce probability appearance advantageous malignant cells large enough assure population suppressed stochastic fluctuations elsevier ltd rights reserved
mammalian lipoxygenases loxs implicated cell differentiation pathogenesis inflammatory hyperproliferative diseases available structural information indicated lipoxygenases constitute single polypeptide chain enzymes consisting small terminal beta barrel domain larger terminal subunit harbors catalytic non heme iron structural similarity domains lipases terminal beta barrel domain lipoxygenases comprises amino acids implicated membrane binding activity regulation explore functional relevance dornain detail develop comprehensive hypothesis biological role structural subunit performed gene technical truncation various mammalian lox isoforms loxs various species human lox mouse lox quantified catalytic activity membrane binding properties truncated recombinant enzyme species found domain essential catalytic activity hardly impact reaction specificity truncated enzyme species exhibit impaired membrane binding properties altered reaction kinetics taken together data suggests regulatory importance terminal beta barrel domain mammalian lipoxygenase isoforms elsevier inc rights reserved
background need incorporate genetic data conservation management decisions increasingly recognised however many published studies represent gold standard sampling techniques analyses rigour often possible limited funding resourcing available developing plans increasing number threatened species requiring conservation management two endemic palm species itremo massif central madagascar dypsis ambositrae decipiens known threatened extinction conservation management species priority newly created protected area region methods genetic diversity two species studied using relatively low cost rapid aflp technique dna fragments generated using three primer combinations analysed individuals two species respectively across ranges results genetic diversity relatively low species two sites highly restricted ambositrae grows found genetically distinct although overall heterozygosity low despite much wider distribution relatively large population decipiens show clear geographical genetic groupings similarly low genetic heterozygosity ambositrae discussion recommendations individuals remaining wild two genetically distinct subpopulations recommended sites ambositrae conserved seed collected situ conservation potential future reintroduction may less important focus resources conserving collecting situ material sites decipiens found genetic diversity represented subpopulation limited increasing sampling may protect significantly higher levels genetic diversity study provides data inform support conservation decisions taken species within region management newly designated itremo massif protected area covers sites two species remain wild
cardiac development vertebrates finely tuned process regulated set conserved signaling pathways perturbations processes often associated congenital cardiac malformations platelet derived growth factor receptor pdgfr alpha highly conserved tyrosine kinase receptor essential development organogenesis disruption pdgfr alpha function murine models embryonic lethal due severe cardiovascular defects suggesting role cardiac development thus necessitating use alternative models explore precise function study generated zebrafish pdgfra mutant line gene trapping pdgfra protein truncated fused mrfp pdgfra mrfp results demonstrate pdgfra mutants defects cardiac morphology result abnormal fusion myocardial precursors expression analysis developing heart later stages suggested pdgfra mrfp expressed endocardium examination endocardium pdgfra mutants revealed defective endocardial migration midline cardiac fusion eventually occurs together data suggests pdgfra required proper medial migration endocardial myocardial precursors essential step required cardiac assembly development
ageing lifespan strongly affected metabolism maximal possible uptake oxygen good predictor performance endurance sports also life expectancy figuratively speaking healthy ageing competitive sport although root cause ageing damage macromolecules balance repair processes decisive reduced intermittent nutrition hormones intracellular signalling pathways regulate metabolism strong effects ageing homeostatic regulatory processes tend keep environment cells within relatively narrowbounds hand body constantly adapting physical activity food consumption spontaneous fluctuations heart rate processes indicate youth health homeo dynamic aspect homeostasis deteriorates age position develop computational models human metabolism dynamics heart rhythm oxygen transport advance understanding ageing computational modelling connections dietary restriction metabolism protein turnover may increase insight homeostasis proteins body way computational reconstruction human physiological processes physiome help prevent frailty age related disease
since discovery years ago small rnas shown play critical role myriad biological processes greater availability high throughput sequencing invaluable furthering understanding small rnas regulatory molecules particular sequencing technologies crucial understanding role small rnas reproductive tissues millions individual sequences generated context high throughput sequencing provides requisite level resolution procedures like northern blotting would able achieve describe protocol preparation small rna libraries sequencing using solexa illumina technology
objective obtain full length cdna novel gene named associated citrinin production related genes monascus aurantiacus methods total rna extracted mycelium cdna end gene amplified using smart trace cdna amplification kit full length cdna novel gene named obtained electronic assembly race race products results gene including open reading frame orf encoded deduced protein amino acid residues amino acid sequence protein found similar sequences many fungal manganese superoxide dismutases genbank aid blastp transcription gene monascus strains analyzed aid northern blotting transcription gene detected monascus strains provided citrinin produced conclusion transcription gene belongs differential expression genes citrinin yielded monascus correlation biosynthesis pathway red pigments
obesity major problem maintaining healthy diet body weight become increasingly important insulin known biomarker human metabolism measuring insulin may thus help inform decisions diet choices provides strong motivation develop fast cheap sensitive easy use home biosensor insulin discuss challenges trade offs sensitivity specificity dynamic range analysis times instrumentation sample transport storage requirements different biosensor development approaches show sensitivity conventional spr lower limit detection low practical purposes label free antibody aptamer carbon nanotube based systems suffer lack specificity highest sensitivity afforded mesoscale phase monitoring electrochemical impedance spectroscopy assays detection limits range currently available laboratory setting thus home based insulin dip stick yet developed graphics biosensing traces structure insulin important molecule quantified role obesity diabetes
ethylhexyl terephthalate dehtp used substitute ortho phthalate based plasticizers like ethylhexyl phthalate dehp discussed regulated due reproductive toxicity developed fast rugged method quantify side chain oxidized monoesters dehtp human urine namely mehtp oxo mehtp mmhtp meptp sample preparation kept simple enzymatic deconjugation two column assembly line sample clean metabolites identified authentic standards quantified via isotope dilution limit quantification meptp oxo mehtp mehtp mmhtp accuracy relative recovery precision relative standard deviation highly acceptable pilot biomonitoring study volunteers aged median female male known occupationally exposed dehtp could detect meptp limit quantification samples median maximum metabolites investigated detected lower rate lower concentration levels oxo mehtp maximum mehtp maximum mmhtp maximum target analytes regarded promising specific urinary biomarkers dehtp exposure method provide basis quantitatively investigating human metabolism dehtp performing exposure risk assessments general population working environment elsevier rights reserved
somatic cells composing mammalian organism genetically identical contain dna sequence nevertheless able adopt distinct commitment differentiate tissue specific way respond developmental cues acquiring terminal phenotype end differentiation process cell highly specialized committed distinct determined fate possible thanks tissue specific gene expression timely regulated epigenetic modifications gradually limit cell potency restricted phenotype related expression pattern complex chemical modifications dna rna associated proteins determine activation silencing certain genes responsible epigenetic control triggers restriction cell pluripotency acquisition phenotypic definition preservation stability subsequent cell divisions process however reversible may modified biochemical biological manipulation leading reactivation hypermethylated pluripotency genes inducing cells transit terminally committed state higher plasticity one epigenetic regulatory mechanisms play key role embryonic development since drive phenotype definition tissue differentiation time crucial better understanding pluripotency regulation restriction stem cell biology tissue repair process
aberrant cell immune responses appear central development systemic lupus erythematosus sle previously reported gaq alpha subunit regulates cell immune responses promoting autoimmunity address whether gaq contributes pathogenesis sle gaq mrna expression studied using real time pcr pbmcs cells sle patients well age sex matched healthy controls results showed gaq mrna expression decreased pbmcs cells sle patients compared healthy individuals correlation analyses showed gaq expression cells sle patients associated disease severity per sle disease activity index presence lupus nephritis expression cytokines keeping clinical results helper cell subsets represented gaq knockout mice addition gaq expression sle cells negatively correlated expression bcl anti apoptotic gene positively correlated expression bax pro apoptotic gene data suggest reduced gaq levels cells may promote enhanced prolonged cell activation contributing clinical manifestations sle
staphylococcus aureus gram positive coccus shaped facultative anaerobe member staphylococcaceae family recent years alimentary toxicosis caused aureus serious problem worldwide constitutes great threat public health review tried summarize conventional methods newly developed rapid detection techniques aureus traditional detection method biochemical detection immunology method molecular biology biosensor method principles advantages disadvantages applications furthermore future perspectives aureus detection methods forecasted last
cysteine protease inhibitor cpi apparent molecular mass kda purified larval hemolymph tobacco hornworm manduca sexta gel filtration sephadex followed hydrophobic ion exchange column chromatographies purified cysteine proteinase inhibitor denoted mscpi strongly inhibited plant cysteine protease papain value nucleotide sequence analysis partial cdna encoding mscpi indicated mscpi consists amino acid residues sequence similar sarcocystatin sarcophaga peregrina however northern blotting pcr analyses using specific primers mscpi suggested mrna encoding mscpi size kilobases included least six tandemly repeated mscpi segments mscpi expressed escherichia coli recombinant protein effectively inhibited cysteine proteases plants well animals cathepsins inhibition exhibited toward trypsin chymotrypsin subtilisin pepsin themolysin elsevier ltd rights reserved
background collection subgingival plaque samples paper points time consuming accident sensitive however collection saliva simple contains pathogens intraoral surfaces aim study investigate whether sampling strategy mouthrinse mouthrinse sample msp test leads results comparable standard sampling method multiple site test deepest pocket quadrant control methods patients periodontitis subgingival plaque sampled deepest pocket quadrant using paper points gaining saliva saline mouthrinse analysis performed using commercially available polymerase chain reaction test periodontal pathogens results detection frequency aggregatibacter actinomycetemcomitans msp porphyromonas gingivalis tannerella forsythia treponema denticola parvimonas micra campylobacter rectus eubacterium nodatum prevotella intermedia eikenella corrodens higher msp fusobacterium nucleatum difference test control detection frequency capnocytophaga species higher msp differences significant gingivalis forsythia denticola micra rectus nodatum conclusions significant difference msp detection frequency key pathogen actinomycetemcomitans key pathogens gingivalis forsythia denticola micra rectus nodatum show statistically higher detection frequencies
background densoviruses dvs highly pathogenic hosts however previously reported mutualistic hadv little known characteristics virus herein undertook series experiments explore molecular biology hadv results phylogenetic analysis showed hadv similar members genus iteradensovirus however compared current members genus iteradensovirus sequence identity hadv less nucleotide level lower amino acid level proteins respectively moreover proteins hadv smaller iteradensoviruses due shorter terminal sequences two transcripts coding proteins proteins identified northern blot race analysis using specific anti anti antibodies western blot analysis revealed kda kda protein respectively finally localization proteins within cell nucleus determined using green fluorescent protein gfp labelling conclusion genome organization terminal hairpin structure transcription expression strategies well mutualistic relationship host suggested hadv novel member genus iteradensovirus within subfamily densovirinae
introduction respiratory tract infections constitute frequent manifestation linked agammaglobulinemia xla many papers elucidating gastrointestinal disorders including inflammatory bowel disease ibd patients aim study evaluate occurrence gastrointestinal disorders ibd compared respiratory tract infections xla individuals material methods patients primary immunodeficiencies diagnosed department immunology children memorial health institute cmhi boys provisional diagnosis agammaglobulinemia forty four subjects fulfilled definitive esid european society immunodeficiencies diagnostic criteria xla retrospective analysis medical history xla patients undertaken results recurrent respiratory tract infections particularly bronchitis pneumonia common symptoms xla disorders constituted next main manifestation followed upper respiratory tract infections twenty six xla patients disorders complained diarrhea resolved generally immunoglobulin therapy introduction single prolonged episodes campylobacter jejuni diarrhea reported two individuals inflammatory bowel disease mild moderate activity diagnosed patient local enteritis mild activity another one conclusions gastrointestinal disorders one main manifestations xla reported almost often lower respiratory tract infections common symptom diarrhea usually resolved immunoglobulin therapy started infections caused giardia lamblia reported occasionally inflammatory bowel disease diagnosed quite exceptionally presumably may connected normal cell immunity
systemic lupus erythematosus sle complex highly heterogeneous disease affects multiple organs including joints skin kidneys heart hematopoietic system nerve system etiopathogenesis sle still remains unclear genetic susceptibilities aberrant epigenetic modifications believed involved precision therapy necessary assess accurately objectively organ involvements disease activity difficult current clinical laboratory tests biomarkers biologic genetic epigenetic chemical characteristic conveniently detectable serve measures disease diagnosis activity prognosis manifestation prediction thereby providing instruction individualized therapy addition biomarkers differ according different manifestations since disease activity index treatments vary significantly example unlike non renal sle lupus nephritis requires significant immunosuppressive drugs past decades research biomarkers lupus strengthened numerous promising biomarkers identified levels genomics transcriptomics proteomics review summarize conventional novel biomarkers tissue specific manner discuss roles specific organ diagnosis future manifestation prediction disease activity assessment correlation histology results aims shed light individualized treatment elsevier rights reserved
fipronil important member phenylpyrazole group insecticides widely used various crops vegetables control insects thereby exposing birds animals humans fipronil currently limited information effects fipronil exposure japanese quail therefore aim assess reproductive toxicological effects fipronil japanese quail day gavage study recovery period days fipronil administration led significant losses feed intake body weight whereas gonadosomatic index affected histological changes observed testes reversible particularly day day recovery cloacal gland atrophy reduced foam quantity reduction fertility sexual aggressive behaviors serum testosterone elevated estradiol hormone levels also observed changes gradually reversed various recovery periods alterations hepatic vitellogenin vtg estrogen receptor alpha alpha gene expression assessed quantitative polymerase chain reaction also observed specifically alpha induced fipronil administration vtg transcript elevated exposure recovery periods results showed fipronil exposure profound negative influence reproductive traits male japanese quail exhibits estrogenic activity raise incidence infertility males nevertheless changes could reversed recovery period days elsevier ltd rights reserved
nucleoside diphosphate kinase ndpk key metabolic enzyme catalyzes synthesis non adenine nucleoside triphosphate ntp transferring terminal phosphate nucleoside diphosphate ndp ntp ndpk regulates variety eukaryotic cellular activities including cell proliferation development differentiation ndpk cdna cloned hemocytes scallop chlamys farreri designated ndpk full length sequence ndpk consists encoding polypeptide amino acids calculated molecular mass daltons mrna expression distribution ndpk bacterially challenged unchallenged scallops studied northern blotting situ hybridization results showed ndpk transcripts present hemocytes gill adductor muscle mantle digestive gland foot gonad expression level increased hemocytes bacterial challenge recombinant ndpk expressed escherichia coli could transfer terminal phosphate udp atp ndpk protein present tested tissues including foot adductor muscle digestive gland gonad mantle gill hemolymph regulated hemolymph bacterial challenge taken together results suggest ndpk may play roles innate immune response scallop
developmental cell biology crucial evaluate dynamic profiles metabolites emerging frog model system using xenopus tropicalis whose genome sequence inbred strains available ready metabolomics investigation amphibians study applied matrix assisted laser desorption ionization maldi mass spectrometry imaging msi analysis identify visualize metabolomic molecular markers tadpoles xenopus tropicalis detected tissue specific peaks visualized distribution tissues distinguished tissues specific peaks identified first time molecular localizations via tandem mass spectrometric analysis hydrocortisone artery dopa rhombencephalon taurine eye corticosterone gill heme heart inosine monophosphate carnosine muscle dopamine nerves phosphatidylethanolamine pharynx first maldi msi study tropicalis tadpoles small tadpoles hard distinguish dissect various organs furthermore data metabolomic profile organ results suggest maldi msi potentially powerful tool examining dynamics metabolomics metamorphosis well conformational changes due metabolic changes
background glutamine synthetase key enzyme nitrogen assimilation catalysing synthesis glutamine ammonium glutamate plants two types isoenzyme localised different compartments one cytosol chloroplast major form plant roots directly converts ammonium taken plant roots glutamine results gene cdna non heading chinese cabbage brassica campestris ssp chinensis makino cultivar suzhouqing isolated pcr real time polymerase chain reaction race rapid amplification cdna ends techniques classified sequence alignment motif search named campestris ssp chinensis makino bcgs subcellular localisation analysis showed bcgs distributed cytoplasm cells bcgs expressed parts mainly roots verified northern blotting analysis additionally expression influenced source concentration conclusion results suggest bcgs novel member family plants bcgs significantly related assimilation non heading chinese cabbage demonstrating gene plays important role plant growth development society chemical industry
vitamin molecule actively involved multiple metabolic pathways mostly known implications related calcium metabolism also determined actively participates cardiovascular system influencing blood pressure coronary artery disease vascular diseases heart failure atrial fibrillation furthermore established vitamin extensively involved regulation renin angiotensin aldosterone system immune system review present different vitamin metabolic pathways associated cardiovascular pathophysiology include studies animal human models well controversies found literature review also incorporates overview implications molecular biology public health fields
ventilator associated pneumonia vap common infection critically ill patients initial antibiotic therapy often broad spectrum promotes antibiotic resistance new techniques investigation obtain early microbiological identification quantification trial compares performance new real time quantitative molecular based method conventional culture patients suspected vap patients suspected vap ventilated least eligible endotracheal aspirate eta bronchoalveolar lavage bal performed suspected vap episode samples analysed conventional culture molecular analysis latter bacterial dna extracted sample real time pcr run patients finally included men median age years clinical pulmonary infection score patients total bal eta could processed culture results agreed threshold obtained bal eta main isolated bacteria staphylococcus aureus pseudomonas aeruginosa haemophilus influenzae performancewas sensitivity specificity bal samples sensitivity specificity eta samples molecular biology method compared conventional culture method chosen reference standard new molecular method provide reliable quantitative microbiological data highly specific good sensitivity common pathogens involved vap european society clinical microbiology infectious diseases published elsevier ltd rights reserved
objective define increased mrna expression bpifb member bactericidal permeability increasing protein family parotid acinar cells non obese diabetic nod mice animal model sjogren syndrome materials methods parotid acinar cells prepared female nod nod shijcl mice without diabetes well control cbl jjcl mice total rna homogenate prepared parotid acinar cells embryonic cdna mouse mtc panel kit used expression bpifb determined cdna microarray analysis pcr real time pcr northern blotting situ hybridization results expression bpifb mrna high parotid acinar cells diabetic non diabetic nod mice weeks age acinar cells cbl mice low expression bpifb mrna age weeks relatively high expression foetus infantile stages conclusions bpifb mrna upregulated parotid acinar cells nod mice expression related onset diabetes findings suggest high expression levels bpifb might predict disease traits onset autoimmunity
many wild animal populations hosts risk parasites malnutrition resource costs defence may difficult afford postulate proteins important homeostasis immunity play complex central role condition dependence resource costs mammalian immune defence test measured plasma concentrations albumin total proteins self reactive antibodies parasite specific igg female soay sheep using principal component analysis found new metric condition reflecting individual variation acquisition assimilation recycling plasma proteins predicted overwinter survival controlling metric age dependent trade antibody titres protein reserves emerged indicating costs mounting antibody response younger individuals survived best prioritising immunity older individuals fared better maintaining high protein nutritional plane findings suggest fascinating roles protein acquisition allocation influencing survival wild animal populations
respiratory syncytial virus rsv important etiological agent respiratory infections particularly children much information regarding immune response rsv comes animal models vitro studies provide comprehensive description human immune response rsv infection based systematic literature review research infected humans initial strong neutrophil response rsv infection humans positively correlated disease severity mediated interleukin dendritic cells migrate lungs primary antigen presenting cell initial systemic cell lymphopenia followed pulmonary cell response mediating viral clearance humoral immunity reinfection incomplete rsv igg iga protective cell stimulating factors derived airway epithelium play major role protective antibody generation gamma interferon ifn gamma strongly protective role biased response may deleterious cytokines particularly chemokines particularly ccl ccl local innate immune factors including cathelicidins ifn lambda contribute pathogenesis summary neutrophilic inflammation incriminated harmful response whereas cells ifn gamma protective roles may represent important therapeutic targets modulate immunopathogenesis rsv infection
platelet activation response stimulation protease activated receptor par receptor differs race one factor contributes difference expression level phosphatidylcholine transfer protein pctp regulator platelet par function conducted expression quantitative trait locus eqtl analysis identifies single nucleotide polymorphisms snps linked expression level platelet genes analysis revealed snps associated expression level pctp genome wide significance using annotation encode public data prioritised one snps functional testing allelic frequency racially dimorphic concordance racially differential expression pctp reporter gene assays confirmed single nucleotide change caused altered transcriptional potency surrounding genomic locus electromobility shift assays luciferase assays overexpression studies indicated role megakaryocytic transcription factor gata summary integrated multi omic data identify functionalise eqtl along previously described relationship pctp par function allows characterise genotype phenotype relationship mechanism gene expression
penconazole widely used fungicide however date peer reviewed publications reporting human metabolism excretion biological monitoring data objectives study develop robust analytical method determine biomarker levels volunteers exposed penconazole finally iii measure metabolites samples collected part large investigation rural residents exposure method developed penconazole two oxidative metabolites three volunteers received single oral dose body weight timed urine samples collected analysed volunteer study demonstrated penconazole penconazole cooh excreted humans following oral dose viable biomarkers excretion rapid half life less four hours mean recovery administered dose range urine treated glucuronidase hydrolyse conjugates results residents study showed levels penconazole cooh population low limit detection future sampling strategies include end exposure next day urine samples well contextual data route time exposure recommended
signalling pathways involving vital second messanger camp impact significant physiological processes unsurprisingly therefore activation regulation camp signalling tightly controlled within cell processes including phosphorylation scaffolding protein signalling complexes sub cellular compartmentalisation inherent complexity along highly conserved structure catalytic sites among nine membrane bound adenylyl cyclases presents significant challenges efficient inhibition camp signalling describe biochemistry cell biology family membrane bound adenylyl cyclases organisation within cell nature camp signals produce prelude considering camp signalling might perturbed describe limitations associated direct inhibition adenylyl cyclase activity evaluate alternative strategies specific targeting adenylyl cyclase signalling inherent complexity activation organisation adenylyl cyclase activity may actually provide unique opportunities selectively targeting discrete adenylyl cyclase functions disease elsevier inc rights reserved
objective comment new histological classification tumors urinary system male genital organs expose state art urothelial carcinogenesis molecular modifications bladder cancer consequences treatments material method systematic review literature search performed data base pubmed focused following keywords bladder cancer molecular subtypes results new histological classification tumors urinary system confirm importance pathology determining care patients especially grade histological type infiltration taking account difficulties cancer genome atlas reported genetic modifications bladder cancer recently several studies explored molecular anomalies bladder cancer elaborated molecular classifications analyzing predictive value according groups different molecular subtype defined urobasal urobasal genomically unstable infiltrated squamous cell carcinoma like like luminal bladder cancers latter subgroup seems chemoresistant conclusions molecular biology classifications allow better understanding bladder cancer could complete near future histological data improve patient management elsevier masson sas rights reserved
organisms inhabiting unpredictable environments often evolve diversified reproductive bet hedging strategies expressed production multiple offspring phenotypes thereby avoiding complete reproductive failure cope unpredictable rainfall african annual killifish temporary savannah pools lay drought resistant eggs vary widely duration embryo development examined sources variability duration individual embryo development egg production fertilization rate nothobranchius furzeri using quantitative genetics approach north carolina type design found support maternal effects rather polyandrous mating primary source variability duration embryo development number previously laid eggs appeared serve internal physiological cue initiating shift rapid slow embryo developmental mode annual killifish extensive phenotypic variability progeny traits adaptive conditions experienced parents limited relevance offspring generation contrast genetic control high phenotypic expression heritability maternal control traits natural selection prevents standing genetic diversity potentially detrimental effects selection fluctuating environments
background epinephrine ascorbic acid tyrosine usually coexist together human blood considered important molecules physiological processes human metabolism thus determine compounds biological fluids need develop sensitive simple rapid methods method simultaneous spectrophotometric determination using multivariate calibration techniques principal component regression pcr partial least squares pls first derivative methods carried results satisfactory results achieved using first derivative partial least squares optimization variables linear ranges gml respectively detection limits obtained gml respectively principal component npc prediction error sum squares press respectively root mean square errors prediction rmsep respectively conclusion good agreement prediction actual concentrations clearly indicates utilization procedure simultaneous determination serum plasma urine samples also determination vitamin tablet epinephrine injection
translocation distinguishing molecular finding follicular lymphoma however reported frequencies show significant variation often attributed geographical methodological factors methods used detect include southern blotting conventional cytogenetics fluorescent situ hybridization polymerized chain reaction pcr practicality superior sensitivity pcr becoming commonly used method clinical laboratories identification main breakpoint regions chromosome including major breakpoint region mbr minor cluster region mcr newly defined intermediate cluster region icr increased detection frequency pcr study using highly sensitive nested pcr strategy primers mbr mcr icr regions able detect patients one highest reported frequencies using pcr screened patient samples collected retrospectively different hospitals jordan dna extracted archival paraffin embedded samples years old respective breakpoint distributions mbr two mcr six icr report analyze high frequency detection general review recent literature attempt assess geographical methodological influences reported frequencies
five species whale matrilineal social systems daughters remain mothers remarkably low levels mitochondrial dna diversity non heritable matriline level demography could reduce genetic diversity required conditions consistent natural histories matrilineal whales diversity nuclear microsatellites little reduced matrilineal whales arguing bottlenecks selective sweeps mitochondrial genome feasible causes clear occurred matrilineal species cultural hitchhiking cultural selection reducing diversity neutral genetic loci transmitted parallel culture supported sperm whales possess suitable matrilineal socio cultural groups coda clans killer whales delineated ecotypes likely originated culturally culture bottlenecks selection well interactions operating within ecotypes may reduced mitochondrial diversity societies cultures genetics false killer two pilot whale species insufficiently known assess drivers low mitochondrial diversity
aim study ascertain whether xylenes form phenylmercapturic acids via aromatic epoxides human metabolism aromatic epoxides suspected exert mutagenic properties therefore developed procedure determination mercapturic acids using method able detect dimethylphenylmercapturic acid dpma urine samples persons occupationally exposed xylenes unequivocal detection phenylmercapturic acid metabolites xylene thanks authentic standards verified independent method xylene concentrations air workplaces ranged ppm median ppm excretion methylhippuric acid urine samples workers ranges median dpma detected samples exposed persons according rough calculation dpma formed ratio respective xylene main metabolite mha means even occupationally relevant xylene exposure potential mutagenic potencies negligible dpma urine sensitive enough general biomonitoring purposes due low ratio excretion mha therefore used biomonitoring furthermore results show irrespective structure xylene isomers preferences metabolism
citrullus colocynthis schrad commonly known colocynth fruit pulp colocynth medicinal properties seeds nutritive qualities colosynthis resistant high temperatures grows desert regions north africa middle east western asia colocynthis likely carries genes interest could explored inducing abiotic stress resistance transgenic plants although tissue culture molecular biology species explored latter primarily used resolve taxonomic relationships members citrullus genus curcubits genetic mining plant scarce genetic transformation protocols also rare aim present review present brief overview biotechnological perspectives colocynthis
background knowing physiological ranges certain hematological biochemical parameters necessary understanding alterations caused pathogenic agents establishing differences states health disease hematological evaluations clinical chemistry performed livers kidneys owl monkeys different sexes age ranges methods forty one healthy owl monkeys evaluated males females three different age groups months year old years old years old animals received physical exams abdominal ultrasounds clinical laboratory tests results conclusions significant differences observed hematocrit hemoglobin values males females levels alkaline phosphatase tissues significantly influenced age also sex influence blood urea nitrogen creatinine levels results show hematological clinical chemistry parameters owl monkeys may influenced sex age
protein based therapeutics started dominate pharmaceutical landscape primarily due high efficacy demonstrated complex diseases despite significant success issues regards safety efficacy quality biotherapeutics point considerable debate concern among various stakeholders correlation glycoform profile safety efficacy drug particular garnered significant attention researchers worldwide escalated emphasis presently given develop understanding various process parameters well molecular biology considerations contribute glycan heterogeneity paper aims review major developments occurred area last decade impact various process parameters glycan expression methods obtaining pre determined glycan levels profiles protein therapeutic developments area real time glycan monitoring control discussed american institute chemical engineers biotechnol prog
micrornas mirnas class small non coding rnas nucleotides regulate gene expression mirnas exist widely animals plants humans play fundamental roles many biological processes growth development differentiation reproduction etc mirna believed involved regulation nearly human genes expression level closely related major diseases mankind thus quantitive detection expression analysis mirna significant understanding functional mechanism mirnas diagnosis treatment diseases development correlated gene drugs etc mirna detection mostly based hybridization amplification techniques nucleic acids includs northern blotting technique microarray situ hybridization real time reverse transcription pcr isothermal rolling circle amplification conjugated polymer based mirna detection discovery mirna different species thoroughly functional research mirna detection methods improved continuously new techniques involving amplification labeled probe detection developed successively paper summarizes progress mirna detection reviews advantages disadvantages kinds methods prospects mirna detection trends
best known thoroughly studied epigenetic phenomenon dna methylation plays important role regulating gene expression plant regeneration development study methylation sensitive amplified polymorphism msap technique carried determine differences methylation profiles two forms protocorm like bodies plbs continuously proliferating plbs cplbs spontaneously differenting plbs sdplbs derived cultures cymbidium hybridium total selective primer combinations used assess status cytosine methylation dna tissues fragments obtained fragments representing recognition site cleaved one isoschizomers hpa msp amplified significantly different two forms plbs frequency total full methylation cplbs sdplbs respectively addition types msap patterns detected two forms plbs belonged two classes type sequencing differentially methylated fragments subsequent blast search revealed cytosine methylated ccgg sequences equally distributed coding non coding regions southern blotting conducted verify methylation polymorphism
variety topics reviewed area mathematical computational modeling biology covering range scales populations organisms electrons atoms use maximum entropy inference tool fields biology drug discovery discussed mathematical computational methods models areas epidemiology cell physiology cancer surveyed technique molecular dynamics covered special attention force fields protein simulations methods calculation solvation free energies utility quantum mechanical methods biophysical biochemical modeling explored field computational enzymology examined
coumarate coenzyme ligase one key enzymes phenylpropanoid metabolism leading series phenolics including water soluble phenolic acids important compounds determining medicinal quality danshen salvia miltiorrhiza bunge traditional chinese medicinal herb investigate function biosynthesis water soluble phenolic acid danshen cloned two cdnas smcl smcl encoding divergent members applying nested reverse transcription polymerase chain reaction pcr degenerate primers followed rapid amplification cdna ends race note sequence data submitted genbank database accession numbers either coding regions inserted prset vector kinetic assay performed purified recombinant proteins substrate utilization profile smcl distinct smcl values smcl smcl coumaric acid mol respectively results conjunction northern blotting information imply smcl may play important role biosynthesis water soluble phenolic compounds whereas smcl may play minor role pathway southern blotting analysis suggested smcl smcl genes present single copy located different sites genome
choice carrier material crucial influence performance immobilized enzyme nanocomposites properties nanoscale also overcome shortcoming single material attracted tremendous attention field immobilized enzyme paper classifications nanocomposite carriers currently used field immobilized enzyme systematically elaborated preparation significantly enhanced enzymology properties enzymes immobilized based nanocomposites based nanocomposites nanofibers composites introduced outlook enzymes immobilized nanocomposites also prospected
chlamydia suis infections endemic domestic pigs europe lead conjunctivitis pneumonia enteritis reproductive failure currently knowledge zoonotic potential suis limited moreover last decades porcine tetracycline resistant suis strains isolated interfere treatment chlamydial infections study presence suis examined nine belgian pig farms using chlamydia culture suis specific real time pcr pigs farmers addition diagnosis suis farmers samples examined using chlamydia trachomatis pcr additionally chlamydia isolates tested presence tet resistance gene dna demonstrated pigs farms eight nine farmers positive least one anatomical site none farmers tested positive trachomatis chlamydia suis isolates obtained pigs eight farms nine porcine suis isolates possessing tet gene retrieved originating three farms moreover suis isolates identified three human samples including one pharyngeal two rectal samples findings suggest research zoonotic transfer suis pigs humans needed
cgg repeat expansion within fmr termed full mutation associated promoter methylation consequent silencing gene expression fragile syndrome fxs common cause intellectual disability morbid autism unmethylated premutation repeats alleles associated fragile related tremor ataxia syndrome fxtas late onset neurodegenerative disorder present year old male fxs white matter changes progressive deterioration gait cerebellar signs consistent probable fxtas evidence cerebellar pathology show tissue mosaicism blood saliva buccal samples size methylation expanded alleles novo unmethylated microdeletion microdeletion involves similar sequence fmr promoter well complete loss cgg repeat proportion cells despite fmr mrna levels blood within normal range methylation cgg sizing results consistent diagnosis concurrent fxs probable fxtas demonstrated presence unmethylated alleles would explain manifestation milder expected cognitive behavioral impairments early onset cerebellar ataxia case suggests individuals fxs manifest symptoms fxtas may benefit detailed laboratory testing wiley periodicals inc
composite lymphomas cls defined two unrelated lymphomas occurring time within tissue incidence tumors low possible combinations lymphomas least frequent ones combining peripheral cell lymphoma ptcl hodgkin lymphoma recently identified five cases composed ptcl classical mixed cellularity type investigated histological clinical features cases immunostaining performed paraffin sections ptcl cells positive tia four five cases hodgkin reed sternberg hrs cells positive weakly positive pax cases positive three five cases positive one five cases negative eber monoclonal rearrangement cell receptor tcr immunoglobulin heavy chain igh genes confirmed polymerase chain reaction pcr using whole paraffin sections concluded precisely monoclonality igh rearrangement hrs cells based single cell pcr igh dna sequencing analysis laser microdissection single cells one case occur positive tia positive ptcl clinicians recognize possibility
chitinases important component plant defence response attack pathogens identify specific chitinase constructed cdna library using total rna genotype resistant tomato inoculated conidia isolates race fusarium oxysporum lycopersici fol one chitinase solchi clone isolated sequence analysis shows cdna clone solchi encodes acidic isoform class iii chitinase southern blotting indicated solchi present tomato genome real time quantitative pcr assay show expression gene induced upon infection fol accumulation transcripts protein rapid resistant genotype first putative role chitinase tomato defence fungal pathogens
ocular surface constantly exposed environmental irritants allergens pathogens mount prompt immune response preserve integrity avoid unnecessary inflammation ocular surface mucosal immune system must also discriminate harmless potentially dangerous antigens seemingly complicated task despite unique features ocular surface mucosal lining shares homeostatic pathophysiological mechanisms mucosal surfaces purpose review explore mucosal homeostatic immune function ocular surface healthy diseased states special focus mucosal immunology concepts information discussed review retrieved pubmed searches literature published january october
differential gene expression profile studied dimocarpus longan lour response treatments simulated acid rain control using differential display reverse transcription polymerase chain reaction ddrt pcr results showed mrna differential display conditions optimized find expressed sequence tag est related acid rain stress potential encoding products similarity transcription initiation factor iif gossypium raimondii similarity protein product theobroma cacao fragment transcription factor activated second messenger substances longan leaves signal perception acid rain
used combination subjective questionnaire objective urinary metabolites measurements evaluate factors predict exposure farm workers qatar organophosphate pesticides assess whether levels exposure associated self reported health outcomes results show pesticides extensively mishandled farms farm workers knew names pesticide using one third participants know amount pesticides applied crops nearly participants participated mixing pesticides together use used protective clothing engaged operation significant number participants knowledge pesticides health hazard least one dialkyllphosphate dap metabolite detected every worker geometric mean concentration dimethylalkylphosphates dmap range limit detection lod diethylalkylphosphates deap range lod total concentration metabolites dap maximum value estimated values reported farmers countries higher levels general populations many countries explored influence metal exposure found consistent negative relationships dap metabolites concentrations trace elements urine farm workers negative associations statistically significant suspect negative associations source dependent may reflective antagonistic relationships human metabolism opps trace metals hence recommend metals included factors assessing health effects opp exposure elsevier inc rights reserved
ribonucleoprotein enzyme telomerase maintains telomeres essential cellular immortality cancers insight telomerase mechanism gained syndromes dyskeratosis congenita mutation telomerase components manifests telomere dysfunction carried detailed kinetic thermodynamic analyses wild type telomerase two disease associated mutations reverse transcriptase domain differences dissociation rates primers different ends independent dna affinities revealing initial binding telomerase telomeric dna occurs previously undescribed two step mechanism involving enzyme conformational changes mutations affected dna binding different mechanisms specifically affected protein conformational changes dna binding whereas showed defects binding region dna gain insight structural level generated first homology model human telomerase reverse transcriptase domain positions andrh corroborate observedmechanistic defects providing validation structural model data reveal importance protein interactions end telomeric dna role protein conformational change telomerase dna binding highlight naturally occurring diseasemutations rich source mechanistic insight
complicated almost conflicting situation exists contemporary biology two scientific concepts existence solve phylogenetic problems different way concepts evolutionary morphology molecular biology modern biology urgently needs contradictions examined removed
atopic dermatitis common inflammatory skin disease treatment options moderate severe disease limited ustekinumab antagonist suppresses activation commonly used psoriasis patients sought assess efficacy safety ustekinumab patients moderate severe phase double blind placebo controlled study patients moderate severe randomly assigned either ustekinumab placebo subsequent crossover weeks last dose weeks background therapy mild topical steroids allowed promote retention study endpoints included clinical scorad biopsy based measures tissue structure inflammation using protein gene expression studies ustekinumab group achieved higher scorad responses primary endpoint weeks compared placebo difference groups significant molecular profile transcriptome showed early robust gene modulation sustained improvements weeks initial ustekinumab group distinct robust modulation also related genes seen weeks ustekinumab treatment mmp ifn gamma elafin cxcl ccl epidermal responses terminal differentiation showed faster weeks long term regulation weeks baseline ustekinumab group severe adverse events observed ustekinumab clear clinical molecular effects clinical outcomes might obscured profound placebo effect likely due background topical glucocorticosteroids possibly insufficient dosing
myotonic dystrophy type common europe considered rare cause myotonic dystrophies asia clinical course also milder phenotypic variability herein describe first known asian family three affected siblings based clinical genetic analyses notably two affected siblings previously diagnosed limb girdle muscular dystrophy myotonia inability muscle relax absent faintly present individuals third sibling grip myotonia first known asian patient three siblings share several systemic characteristics including late onset proximal dominant muscle weakness diabetes cataracts asthma repeat primed pcr across repeat revealed characteristic ladder pattern cctg expansion siblings southern blotting analysis identified presence repeats studies asian populations needed define clinical presentation asian yet unidentified phenotypic differences caucasian patients
glioblastoma common type primary brain tumor adults usually fatal short duration acquiring better understanding pathogenic mechanisms glioblastoma essential design effective therapeutic strategies grb associated binding protein gab member daughter sevenless gab family scaffolding adapters reported important development progression human cancer previously reported gab expressed high levels glioma may serve useful prognostic marker glioma novel therapeutic target glioma invasion intervention elucidating gab overexpressed glioma investigating downregulate assist understanding pathogenesis progression disease offer novel targets therapy present study used situ hybridization detect microrna mir expression levels targetscan predict utr gab targeted mir northern blotting reverse transcription quantitative polymerase chain reaction also conducted current study mir downregulated glioblastoma tissues compared adjacent normal tissues however involvement continues detected disease results present study demonstrated mir tumor suppressor gene inhibited proliferation regulating gab glioblastoma cells furthermore gab upregulated glioma expression levels also associated grades glioma severity addition overexpression gab suppressed expression mir glioblastoma cells therefore restoration mir targeting gab may used conjunction therapies prevent progression glioblastoma
background past decade regulatory bodies scientific societies recommended primary efficacy outcome score reflects symptom severity use rescue medication clinical trials allergy immunotherapy ait objective sought compare results obtained two subject specific scores combined score adjusted symptom score adss assessment ait seasonal allergic rhinoconjunctivitis due birch grass pollen allergens methods adss evaluated subjects receiving dose allergen extract daily sublingual route four clinical trials grass pollen tablet nct nct nct nct one birch pollen solution nct derived rhinoconjunctivitis total symptom score rtss rescue medication score rms giving equal weight symptoms medication use adss symptom score adjusting rescue medication use efficacy end points analysed using analysis covariance linear model results trials despite different constructs two scores combined score adjusted symptom score similarly reduced group compared placebo group treatment effect consistently demonstrated scores adss used either daily scores average daily scores pollen season minor differences statistical conclusions observed results leading interpretation conclusions clinical relevance two scores combined adjusted scores evaluation clinical efficacy ait led similar results similar statistical conclusions similar interpretation
nucleosides corresponding mono triphosphates play important roles maintaining cellular homeostasis addition perturbations homeostasis result dysfunctional cellular processes cause pathological conditions cancer autoimmune diseases review article discusses contemporary research areas applying nucleoside analogs probe mechanistic details underlying complexities nucleoside metabolism molecular cellular levels first area describes classic contemporary approaches used quantify activity nucleoside transporters important class membrane proteins mediate influx efflux nucleosides nucleobases focal point section describing biophotonic nucleosides replacing conventional assays employing radiolabeled substrates study mechanism proteins second section describes approaches understand utilization nucleoside triphosphates cellular dna polymerases dna synthesis emphasis placed describing novel nucleoside analogs ethynyl deoxyuridine used quantify dna synthesis normal replication well replication damaged dna sections seminal research articles relevant areas described highlight novel probes improving understanding biological processes article part special issue entitled physiological enzymology protein functions elsevier rights reserved
immunoregulatory function regulatory cells tregs impaired multiple sclerosis recent studies shown umbilical cord derived mesenchymal stem cells mscs exert regulatory effect functions immune cells thus investigated whether mscs could improve impaired function tregs patients cultures mscs pbmcs patients performed days flow cytometry used determine frequency tregs cell proliferation assay used evaluate suppressive capacity tregs elisa conducted cytokine analysis cultures results showed mscs significantly increased frequency low tregs resting cells accompanied significantly augmented production cytokine prostaglandin transforming growth factor beta interleukin along reduced interferon gamma production cultures importantly msc primed tregs patients significantly inhibited proliferation pha stimulated autologous allogeneic effector cells teffs patients healthy individuals compared non msc primed naive tregs patients furthermore remarkable differences suppressing proliferation pha stimulated teffs observed msc primed tregs patients naive tregs healthy subjects impaired suppressive function tregs completely reversed culture msc modulation report first demonstrate functional defects tregs repaired vitro using simple msc priming approach
updated rida quick immunochromatographic assay biopharm detection norovirus evaluated prospective multicenter study using stool samples patients gastroenteritis compared real time reverse transcriptase polymerase chain reaction rtpcr gold standard rida quick overall sensitivity specificity genotype analysis polymerase orf capsid orf region genome indicated rida quick assay could detect broad range genotypes including new variants positive samples detected house sybr green rtpcr rida gene pcr biopharm mostly rida gene pcr xpert norovirus assay cepheid rida quick used reliably confirm norovirus stool samples negative result definitively exclude presence norovirus elsevier inc rights reserved
novel approach stem cell generation attempt induce conversion adult somatic cells pluripotent stem cells called induced pluripotent stem cells ipscs introducing specific transcription factors ipscs two essential cell characteristics pluripotent posses long term cell renewal capacity additionally ipscs derived patient specific somatic cells thus bypassing ethical immunological issues aim study reprogram long term cryopreserved human neonatal fibroblasts new method using lipid nano particle technology lipofectamine reagent transfection system combination epi reprogramming vectors obtained ipscs characterized several sophisticated methods molecular biology microscopy distinct colonies ipscs started appear day reprogramming presence ipscs colonies proved alkaline phosphatase live staining manual picking colonies subsequent passaging lose ability form embryoid bodies positive tra ssea moreover obtained ipscs expressed pluripotency markers oct sox nanog expression levels chondrogenic osteogenic adipogenic markers significantly higher comparison control summary demonstrated long term cryopreserved human neonatal fibroblasts reprogrammed ipscs analysis concerns biological safety may used patient specific cells regenerative medicine
lepidopteran larvae injurious pests chinese cabbage production attempted development transgenic chinese cabbage expressing potato proteinase inhibitor gene pinii bioassayed pest repelling ability transgenic plants cotyledons petioles aseptic seedlings used explants agrobacterium mediated vitro transformation agrobacterium tumefaciens contained binary vector pbbbasta pinii bar comprising pial bar genes plants showing vigorous ppt resistance obtained series concentration selection ppt resistance subsequent regeneration leaf explants dissected putative chimera transgenic plants confirmed pcr genomic southern blotting showed bar pinii genes integrated plant genome double haploid homozygous transgenic plants obtained microspore culture pinii expression detected using quantitative real time polymerase chain reaction qrt pcr detection pinii protein content transgenic homozygous lines insect feeding trials using larvae cabbage worm pieris rapae larvae diamondback moth plutella xylostella showed higher larval mortality stunted larval development lower pupal weights pupation rates eclosion rates transgenic lines comparison corresponding values non transformed wild type line
glycyrrhiza uralensis acquired significant importance due medicinal properties health function study quality uralensis adventitious roots evaluated terms genetic stability active compounds anti inflammatory activity monomorphic banding pattern obtained mother plant tissue cultures uralensis randomly amplified polymorphic dna markers confirmed genetic stability adventitious roots neoliquiritin neoisoliquiritin ononin liquiritin glycyrrhizic acid identified uralensis adventitious roots basis high performance liquid chromatography electrospray ionization tandem mass spectrometry analysis study also revealed adventitious roots possessed better anti inflammatory effect native roots increase contents uralensis active components elicitors used adventitious roots culture combination methyl jasmonate phenylalanine synergistically stimulated accumulation glycyrrhetinic acid total flavonoid compared single treatment conclusion uralensis adventitious roots exploitable system production licorice international union biochemistry molecular biology inc
backgroundseveral reports found relationship increased serum lead levels risk essential tremor especially carriers minor allele single nucleotide polymorphism snp aminolevulinate dehydratase alad gene involved synthesis haem groups group reported decreased risk carriers minor alleles snps haem oxygenases hmox hmox respectively involved haem metabolism analysed whether alad alone interactions four common snps hmox hmox genes associated risk materials methodswe analysed genotype allele variants frequencies alad patients familial healthy controls using taqman method also analysed role interaction alad hmox hmox hmox hmox risk developing resultsthe frequencies genotype allelic variants alad differ significantly patients controls influenced gender subjects carrying alad rscc genotype wild type hmox rsgg genotype hmox rsg allele significantly decreased risk conclusionsthese results suggest alad snp related risk interaction hmox snp could weakly associated risk disease
gene badh transformed alfalfa medicago sativa agrobacterium mediated transformation method salt tolerance transgenic progenies assessed among plants obtained transformation positive polymerase chain reaction pcr detection using primers specific badh gene reverse transcription polymerase chain reaction pcr analysis indicated gene badh expressed plants transcriptional level southern blotting analysis also showed target integrated medicago genome transgenic plants grew vigorous salt stress condition whereas wild type plants retarded survive cradle relative electrical conductivity malondialdehyde mda contents transgenic plants lower peroxidase pod superoxide dismutase sod activities higher wild type plants results demonstrated expression foreign badh gene enhanced salt tolerance transgenic alfalfa
present study defined simplified physiologically based pharmacokinetic pbpk model acrylonitrile humans based vitro metabolic parameters determined using relevant liver microsomes coefficients derived silico physiological parameters derived literature prior previously developed pbpk model rats model basically consists chemical absorption compartment metabolizing compartment central compartment acrylonitrile evaluation previous rat model performed comparisons experimental pharmacokinetic values blood urine obtained rats vivo oral treatment acrylonitrile observed adverse effect level days elimination rates acrylonitrile vitro established using data rat liver microsomes pooled human liver microsomes acrylonitrile expected absorbed cleared rapidly body silico case rats confirmed experimentally vivo repeated low dose treatments results indicate simplified pbpk model acrylonitrile useful forward dosimetry approach humans model may also useful simulating blood concentrations related compounds resulting exposure low chemical doses elsevier inc rights reserved
beyond universality symmetry concept different emphases application different branches science chemistry particle physics astrophysics represents bridge utilitarian approach application symmetry concept proved immensely fruitful twentieth century science pivotal discoveries especially structural chemistry molecular biology materials science emerged relaxing stipulations classical teachings symmetry highly personal presentation relies ideas expressed number notable individuals recent science among desmond bernal francis crick ronald gillespie aleksandr kitaigorodskii alan mackay george olah linus pauling roger penrose dan shechtman james watson steven weinberg eugene wigner
background known high prevalence genetic clinical syndrome diagnoses paediatric cardiac population disorders often multisystem effects may important impact neurodevelopmental outcomes taken together facts suggest patients families may benefit consultation genetic specialists cardiac neurodevelopmental clinic objective study assessed burden genetic disorders utility genetics evaluation cardiac neurodevelopmental clinic methods retrospective chart review conducted patients evaluated cardiac neurodevelopmental clinic december april patients seen cardiovascular geneticist genetic counselling support results total patients included study patients pre existing genetic syndromic diagnosis following genetics evaluation additional given new clinical laboratory confirmed genetic diagnosis including environmental teratogenic exposures malformation associations chromosomal disorders single gene disorders genetic testing recommended patients radiological imaging screen congenital anomalies patients subspecialist medical referrals patients non genetic clinical laboratory testing patients syndrome specific guidelines available followed patients known diagnosis american academy pediatrics red book asplenia guideline recommendations given five heterotaxy patients family based cardiac screening recommended families affected left ventricular outflow tract obstruction conclusion genetics involvement cardiac neurodevelopmental clinic helpful identifying new unifying diagnoses providing syndrome specific care may impact patient overall health status neurodevelopmental outcome
background vitro experiments revealed toll like receptor tlr pathway involved progression immunoglobulin nephropathy igan induction proinflammatory cytokines evidence showed disease models peroxisome proliferator activated receptor gamma ppar gamma agonists shown exert anti inflammatory effects suppression expression activity tlr however interaction ppar gamma tlr igan fully studied vitro vivo study explored whether tlr pathway attributed progression igan experimental rats methods bovine gamma globulin used establish igan model fifty four lewis rats randomly divided six groups control tak igan tak toll like receptor inhibitor tak groups rats administrated tlr inhibitor tak control pio igan pio pio groups rats administrated ppar agonist pioglitazone urinary albumin creatinine ratio acr serum creatinine blood urea nitrogen detected automatic biochemical analyzer renal histopathological changes observed hematoxylin eosin staining iga deposition glomeruli measured immunofluorescence staining real time polymerase chain reaction western blotting used detect tlr interleukin beta beta message ribonucleic acid mrna protein expression renal tissues results presented mean standard deviation differences groups analyzed one way analysis variance results compared normal rats experimental rats showed higher acr mmol mmol obvious iga deposition mesangial hypercellularity hyperplasia mesangial matrix accompanied increased serum beta lpg renal expression beta tlr biochemical parameters renal pathological injury relieved tak group pio group expressions renal tissue tlr beta serum decreased rats treated tak expression tlr mrna protein significantly reduced pio group compared igan pio group conclusions study proves inflammation mediated tlr signaling pathway involved progression igan rat models moreover pioglitazone inhibit expression tlr igan
folates belong vitamin group based parental compound folic acid involved important biochemical processes like dna synthesis repair composed pteridine ring aminobenzoic acid glutamate moieties human metabolism able synthesize folates therefore obtain diet synthetic vitamin used food fortificant low price relative stability increased bioavailability compared natural folate forms known sensitive compound easily degradable aqueous solution ultraviolet visible light towards various products irradiation process preservation foods uses accelerated electrons gamma rays rays irradiation proposed treatment various food products eliminating reducing pathogens insects increasing storage time replacing chemical fumigants study concerns identification degradation products beam irradiation aqueous solutions irradiated van graaff electrons beam accelerator mev current scan width dose rate kgy applied doses control kgy absorbed doses monitored fwt radiochromic dosimeters elsevier ltd rights reserved
rapid advances field computational genomics bioinformatics motivated development innovative engineering methods data acquisition interpretation analysis help later methods many processes molecular biology modeled analyzed identification discovery coding regions genomic structure using computational algorithms clear example processes work proposes novel application well known principles concepts communications theory digital signal processing detection protein coding regions prokaryotic genomes proposed algorithm employs polyphase complex mapping scheme provide numerical representation genomic sequences involved analysis utilizes concepts communications theory correlation maximal ratio combining mrc algorithm filtering generate signal whose peaks troughs signify coding noncoding regions respectively proposed algorithm applied several prokaryotic genome sequences two bayesian classifiers designed evaluate performance proposed algorithm obtained simulation results show algorithm able efficiently accurately identify protein coding regions sensitivity specificity values comparable well known gene detection methods prokaryotes glimmer genemark proves relevance using communications theory concepts genomic sequence analysis elsevier ltd rights reserved
crispr clustered regularly interspaced short palindromic repeats technology emerged powerful technology genome editing widely used basic biomedical research explore gene function recently technology increasingly applied study treatment human diseases including barth syndrome effects heart duchenne muscular dystrophy hemophilia beta thalassemia cystic fibrosis crispr cas crispr associated protein genome editing used correct disease causing dna mutations ranging single base pair large deletions model systems ranging cells vitro animals vivo addition genetic diseases crispr cas gene editing also applied immunology focused applications targeting chemokine receptor type programmed death gene creation chimeric antigen receptors cells purposes treatment acquired immune deficiency syndrome aids promoting anti tumor immunotherapy furthermore technology applied genetic manipulation domesticated animals goal producing biologic medical materials including molecules cells organs large scale finally crispr cas teamed induced pluripotent stem ips cells perform multiple tissue engineering tasks including creation disease models preparation donor specific tissues transplantation review explore ways use crispr cas opening new doors treatment human diseases copyright chongqing medical university production hosting elsevier open access article license http creativecommons org licenses
hirsutella rhossiliensis owvt substantial potential biocontrol agent plant parasitic nematodes serine proteases emerged potentially useful factor nematode fungus interactions grown liquid culture nematode panagrellus redivivus sate nitrogen source extracellular alkaline protease hasp produced owvt purified hasp killed juveniles soybean cyst nematode heterodera glycines degraded proteins nematode cuticle molecular mass hasp estimated kda optimum temperature enzyme activity degrees amino acid sequence obtained terminal sequence analysis applied primer design isolate hasp cdna gene consists open reading frame analysis cdna corresponding genomic sequence revealed hasp included four exons divided three introns southern blotting showed hasp single copy gene genome deduced amino acid sequence similar serine proteases endoparasitic egg parasitic fungi nematodes entomopathogenic fungi less similar serine proteases nematode trapping fungi phylogenetic analysis amino acid sequences serine proteases serine protease rhossiliensis owvt clustered serine proteases parasites nematode eggs rather trapping fungi etsevier gmbh rights reserved
liver transplantation accepted useful therapeutic approach patients end stage liver disease however mismatch great demand liver transplants number available donor organs underscores urgent need alternative therapeutic strategies patients acute chronic liver failure rapidly growing knowledge stem cell biology opened new avenues toward stem cell based therapy liver disease stem cells capacity high proliferation multipotent differentiation characteristics stem cells fit cell therapy several types cells investigated possible sources liver regeneration mesenchymal stem cells hematopoietic stem cells liver progenitor cells induced pluripotent stem cells bone marrow mononuclear cells vitro vivo experiments revealed cells great potential candidates stem cell therapy reviewed reports clinical trials cell therapy liver disease recently undertaken using mesenchymal stem cells hematopoietic stem cells bone marrow mononuclear cells liver progenitor cells reports heterogeneity description trial design types infused cells patient population efficacy therapies addressed reports viewpoints clarified significance hope review article provide perspective available approaches based stem cell based therapy liver disease
seven transmembrane protein coupled receptors gpcrs gained much interest recent years largest class among cell surface receptors proteins lie heart gpcrs signalling therefore therapeutically targeted overcome complexities gpcr responses signalling proteins classified four families subdivided four classes among alpha alpha isoforms crucial ubiquitously expressed isoforms almost similar amino acid sequence may exhibit functional divergences however uncertainties often arise alpha alpha inhibitors proteins might also suitability invention novel specific inhibitors isoforms ubo qic discovered potent inhibitors alpha functions also investigated thrombin protease activated receptor par inhibitors platelet aggregation inhibition likely protein involved par stimulates responses one alpha family isoforms review highlight molecular structures pharmacological responses alpha family may reflect biochemical molecular role alpha alpha advanced understanding alpha alpha role gpcr signalling may shed light understanding cell biology cellular physiology pathophysiology also lead development novel therapeutic agents number diseases
amyloid deposition underlies broad range diseases including multiple neurodegenerative diseases systemic amyloidosis type diabetes amyloid sensitive dyes particularly thioflavin widely used detect vivo amyloid deposits monitor amyloid formation vitro follow kinetics amyloid self assembly show dye sypro orange binds amyloid fibrils formed human amylin polypeptide responsible islet amyloid formation type diabetes fluorescence enhancement observed presence pre fibrillar species presence non amyloidogenic rat amylin kinetics human amylin amyloid formation monitored sypro orange fluorescence match time course determined thioflavin assays thus sypro orange offers alternative thioflavin assays amylin amyloid formation implications interpretation sypro orange based assays protein stability protein ligand interactions discussed
background anaphylaxis life threatening emergency reliable epidemiological data lacking study aimed analyze quickly patients presenting anaphylaxis treated emergency whether treatment followed european academy allergy clinical immunology eaaci guidelines methods patient data collected april april emergency doctors completed questionnaire adult patients presenting emergency department pierre hospital brussels anaphylaxis inclusion criteria based sampson criteria anaphylaxis data analyzed using microsoft excel database results emergency visits adults presented anaphylaxis patients received first medical help later min symptom onset patients received adrenaline oral antihistamines received glucocorticosteroids patients discharged directly received medical prescriptions self administration corticosteroids antihistamines intramuscular adrenaline instructed consult allergologist adequate diagnosis patients hospitalized conclusion majority patients treated according eaaci guidelines management anaphylaxis minority received recommended adrenaline auto injector self administration discharge majority patients received medical help later min symptom onset adrenaline auto injector prescription necessity low rate doctors prescribing adrenaline auto injectors setting underlines need train doctors various backgrounds prevention treatment anaphylaxis close collaboration allergologists
density functional theory dft become routine tool computation electronic structure physics materials chemistry fields yet application traditional dft problems biological sciences hindered large extent unfavourable scaling computational effort system size review major software functionality advances enable insightful electronic structure calculations performed systems comprising many thousands atoms describe early applications large scale dft computation electronic properties structure biomolecules well paradigmatic problems enzymology metalloproteins photosynthesis computer aided drug design review hope demonstrate first principles modelling biological structure function relationships approaching reality
autopsy histology cytology histology cytology still main diagnostic tools surgical pathology last two decades molecular biology gradually extended diagnostic armamentarium tumor pathology molecular biology techniques used diagnose subclassify tumors predict response therapies identify therapeutic targets molecular pathology evolved novel focus clinical pathology transforms historically morphology based discipline traditional pathology molecular pathology combine guide tumor therapy
concepts protein purification often taught undergraduate biology biochemistry lectures reinforced laboratory exercises however reported activities allow students directly gain experience using modern protein purification instruments fast protein liquid chromatography fplc laboratory exercise uses size exclusion chromatography sec ion exchange iex chromatography separate mixture four different proteins students use sec chromatogram corresponding sds page gel understand protein conformations change different conditions native non native students explore strategies separate eluting proteins iex chromatography using either cation anion exchange one protein bound column collected flow exercise undergraduate students gain hands experience experimental design buffer sample preparation implementation instrumentation commonly used experienced researchers learning applying fundamental concepts protein structure protein purification sds page international union biochemistry molecular biology
aim study understand pine cone addition could acidify milk result production yogurt purpose yogurts produced three different pine cones classified according collection period october november december physicochemical textural microbiological properties determined quality criteria yogurt samples importantly lactic acid bacteria lab isolated identified yogurt samples yogurt isolates identified incubation time yogurts reached similar degrees textural properties yogurt increased compared found related high lab numbers similarly highest dry matter water holding capacity acidity values determined yogurt whereas lowest values lowest value found yogurt related lab counts lactobacillus spp streptococcus spp counts yogurts ranged log cfuig respectively also lab species identified streptococcus thermophilus lactobacillus plantarum yogurt samples showing pine cones somehow harbour yogurt starters elsevier ltd rights reserved
world races towards plant based bio economy plants known ideal economical bio reactors harnessed production recombinant proteins major immunodominant kda groes antigen chaperonin gene mycobacterium tuberculosis selected expression plants putative tuberculosis subunit vaccine candidate two crops tobacco potato engineered stable plant transformation expression kda groes antigen using non viral binary vectors integration groes gene genomes tobacco potato confirmed pcr southern blotting expression groes antigen tobacco total soluble protein tsp however expression antigen indian potato kufri bahar comparatively low tsp recombinant groes plant derived protein characterised confirmed maldi tof tof elisa first report expression kda chaperonin tobacco potato
thioesterase domain polyketide synthase involved biosynthesis membered macrolactam antibiotic vicenistatin vinte found catalyze oligomerization macrocyclization omega hydroxy fatty acid ethyl esters afford membered macrocyclic lactones ring sizes macrocycles appear limited moderate sizes space limitation active site vinte also verified initially formed linear dimer first released active site vinte recognized vinte prior transformation cyclic dimer
antithymocyte globulin atg often included conditioning regimen prevent graft host disease allogeneic hematopoietic stem cell hsc transplantation however atg contains antibodies targeting wide range antigens human cells potential target effects remain concern explored question humanized mice permit analysis human cell depletion tissues showed atg binds almost lineages human hematopoietic cells including hscs accordingly capable depleting almost human hematopoietic cells interestingly efficacy atg highly variable depending tissue residence human cells bone marrow significantly less susceptible blood spleen recovery multilineage human lymphohematopoietic reconstitution humanized mice received atg weeks hsc transplantation indicates atg minimal effect human hscs settled bone marrow niches however efficient human hsc depletion engraftment failure seen mice receiving atg time transplantation data indicate efficacy atg tissue dependent suggest potential risk impairing donor hematopoietic engraftment atg used preparative conditioning regimens cellular molecular immunology published online october
capability accurately rapidly reproducibly determine affinity ligand target protein enzyme vital component successful structure based drug design effort order successfully drive structure based drug design sbdd project forward multiple distinct assays particular strengths weaknesses need employed using bacterial dna gyrase example range assays described fully support sbdd program
introduction human genome scale metabolic reconstruction details known metabolic reactions occurring humans thereby holds substantial promise studying complex diseases phenotypes capturing whole human metabolic reconstruction going task since last community effort generated consensus reconstruction several updates developed objectives report new consensus version recon integrates various alternative versions significant additional updates addition establishing consensus reconstruction key objectives included providing comprehensive annotation metabolites genes ensuring full mass charge balance reactions developing model correctly predicts atp production range carbon sources methods recon developed combination manual curation automated error checking specific significant manual updates include respecification fatty acid metabolism oxidative phosphorylation coupling electron transport chain atp synthase activity metabolites definitive chemical formulae charges specified used ensure full mass charge reaction balancing automated linear programming approach additionally improved integration transcriptomics proteomics data facilitated updated curation relationships genes proteins reactions results recon represents predictive model human metabolism date demonstrated extensive manual curation increased reconstruction size metabolites reactions associated genes mapped single standard focus upon mass charge balancing reactions along better representation energy generation produced flux model correctly predicts atp yield different carbon sources conclusion updates achieved complete best annotated consensus human metabolic reconstruction available thereby increasing ability resource provide novel insights normal disease states human model freely available biomodels database http identifiers org biomodels model
nanocarrier design combined pulmonary drug delivery holds great promise treatment respiratory tract disorders particular targeting dendritic cells key immune cells enhance suppress immune response lung promising approach treatment allergic diseases fluorescently encoded poly vinyl alcohol pva coated gold nanoparticles functionalized either negative coo positive surface charges functionalized sign antibody particle surface enabling binding dendritic cell surface receptor coculture model consisting epithelial immune cells macrophages dendritic cells mimicking human lung epithelial tissue barrier employed assess effects aerosolized aunps pva aunps showed higher uptake compared cooh counterparts highest uptake recorded macrophages shown flow cytometry none aunps induced cytotoxicity necrosis increased cytokine secretion whereas pva aunps induced higher apoptosis levels sign aunps showed significantly increased uptake monocyte derived dendritic cells mddcs subsequent activation compared non antibody conjugated control aunps independent surface charge results show sign conjugation aunps enhanced mddc targeting activation complex lung cell model findings highlight potential immunoengineering approaches targeting activation immune cells lung nanocarriers
background hereditary vitamin resistant rickets hvdrr autosomal recessive disorder caused mutations vitamin receptor vdr gene variable phenotypes associated mutations linked effects interacting partners vdr mainly retinoic receptor rxr methods examined four patients hvdrr three unrelated lebanese families parents consanguineous normal phenotype used sanger sequencing identify mutations coding exons vdr results two homozygous mutations exon vdr gene identified phenotype genotype association possible even mutation alopecia seen mutation despite comparable rachitic bone disease patients showed different responsiveness large doses alfacalcidol alpha hydroxy vitamin supplementation conclusions first report vdr mutations lebanon promising clinical outcomes despite severity phenotypes
soybean like many crops genomic era well established genomic database provides wide range opportunities improvement genetic manipulation growing demand soybean transgenics increased production improved quality handicapped due inefficient transformation strategies hence efficient stable reliable transformation system prime requisite present study agrobacterium mediated transformation standardized refining glufosinate selection system terms dosage degree exposure cotyledonary node explants without wounding initially cultured non selective shoot induction medium days transferring selective sim optimized concentration ammonium glufosinate showed least selection escape frequency wounded cotyledonary node explants infected agrobacterium tumefaciens harboring pbin bar construct showed improved regeneration efficiency transformation efficiency using southern blotting plants southern analysis plants confirmed integration bar gene genomic dna bar positive plants segregated ratio first report knowledge high transformation efficiency using agrobacterium mediated cot node glufosinate system indian soybean genotype
citrus canker caused xanthomonas citri citri serious disease citrus plants worldwide earlier phylogenetic studies using housekeeping genes revealed citri citri related many pathovars collectively referred xanthomonas citri pathovars xcps present study report genome sequences xcps compared four xcps available public domain tree based phylogenomic marker genes xcps form monophyletic cluster suggesting origin common ancestor phylogenomic analysis using type strain established xcps belong one species clonal analysis core genome revealed presence two major lineages within monophyletic cluster consisting clonal variants incidentally majority xcps first noticed india corroborating clonal relationship common origin comparative analysis revealed open pan genome role interstrain genomic flux xcps since diversification common ancestor even though wide variations type iii gene effectomes identified three core effectors valuable resistance breeding programs overall genomic examination ecological relatives allowed dissect tremendous genomic potential citri species rapidly evolve specialized strains infecting diverse crop plants importance host specialization one characteristic features highly evolved pathogens xanthomonas group phytopathogenic bacteria since hosts involve staple crops economically important fruits citrus detailed understanding diversity evolution strains infecting diverse plants important quarantine purposes present study carried genomic investigation members phylogenetically ecologically defined group xanthomonas strains pathogenic diverse plants including citrus group includes oldest xanthomonas pathovars also recently emerged pathovars particular country endemic high throughput genomic study provided novel insights evolution unique lineage consisting serious pathogens ecological relatives suggesting nature scope pattern rapid recent diversification level species clonal variants study revealed interesting genomic patterns diversification xanthomonas lineage perhaps inspire careful study host range included pathovars
short chain enoyl coa hydratase sceh mitochondrial enzyme involved oxidation fatty acids catabolic pathway valine lesser extent isoleucine deficiency enzyme recently shown cause early childhood leigh syndrome phenotype reported patients compound heterozygotes two missense missense truncating variants echs encodes sceh describe two siblings severe refractory lactic acidosis death within first days life following negative clinical whole exome whole genome sequencing resorted autozygome exome analysis research basis identified homozygous splice site mutation two cases analysis cdna confirmed complete replacement normal transcript aberrant transcript ins predicting premature truncation protein alaglufs furthermore quantitative reverse transcriptase polymerase chain reaction rtpcr showed marked reduction echs likely nonsense mediated decay nmd mediated first report homozygosity truncating mutation echs may explain severe phenotype report highlights need consider sceh deficiency patients lethal neonatal lactic acidosis potentially limited sensitivity untargeted genomic sequencing towards non canonical splicing mutations may explain least negative cases clinical exome genome sequencing
understand molecular cellular mechanisms underlying salt response isolate differentially expressed genes constructed forward subtractive cdna library salsola ferganica treated nacl different lengths time using suppression subtractive hybridization ssh technique ssh library contained approximately positive clones insert size ranging eighty clones selected study based results reverse northern blotting sequencing cdnas first reported expressed sequence tags ests salsola ferganica listed genbank among differentially expressed genes genes known function display high homology identity known sequences unknown function showing homology known sequences one novel gene match previously reported genes five cdna fragments sfd sfd sfa sfd sfc randomly chosen differentially expressed genes reverse transcription pcr analysis expression sfd entirely induced salt stress sfd sfd sfa sfc increased relatively lower level isolated ests reported may enable find new genes involved salt tolerance salsola ferganica
land plant plastomes contain two copies large inverted repeat promote high frequency homologous recombination generate isomeric genomic forms among conifer plastomes canonical highly reduced pinaceae completely lost cupressophytes however lineages acquired short novel irs also exhibit recombinational activity generate genomic structural diversity diversity shown exist occasionally within cupressophyte species known whether multiple genomic forms coexist within individual plants examine recombinational potential novel cupressophyte irs within individuals species sequenced plastomes four closely related species juniperus four plastomes identical gene content genome organization except large inversion approximately containing trnq uug southern blotting showed different isomeric versions plastome predominate among individual junipers whereas polymerase chain reaction high throughput read pair mapping revealed substoichiometric presence alternative isomeric form within individual plant furthermore comparative genomic studies demonstrate predominant substoichiometric arrangements changed several times cupressophytes well results provide compelling evidence substoichiometric shifting plastomic forms cupressophyte evolution suggest substoichiometric shifting activity plastid genomes may adaptive
background natalizumab reduces disease activity multiple sclerosis natalizumab binds late antigen inhibits vascular cell adhesion molecule vcam mediated transmigration immune cells across blood brain barrier associated decreased serum concentrations soluble vcam altered composition immune cell subsets blood objective aimed examine svcam serum concentrations whole blood mrna expression levels immune activation biomarkers associated disease activity natalizumab treated patients methods svcam serum concentrations whole blood mrna expression measured blood samples untreated rrms patients two independent groups natalizumab treated patients results svcam serum concentrations whole blood expression hlx ilb mrna lower whereas expression ebi mrna higher natalizumab treated patients five genes differentially expressed clinically unstable natalizumab treated patients discovery validation group conclusion decreased serum concentrations svcam altered whole blood mrna expression levels panel immunomarkers associated natalizumab treatment sensitive markers disease activity however decreased expression pro inflammatory hix ilb increased expression immunoregulatory ebi may indicate less pathogenic immune activation status natalizumab treated elsevier rights reserved
heterotrimeric proteins signal variety endomembrane locations addition canonical function cytoplasmic surface plasma membrane activated cell surface protein coupled receptors focus signaling golgi activates signaling cascade ultimately resulting vesicle fission trans golgi network tgn develop novel molecular tool inhibiting endogenous spatial temporal manner take advantage lipid association mutant widely used inhibitor grkct grkct kere frb fkbp heterodimerization system show grkct kere inhibit function expressed cells recruitment specific membrane location recovers ability grkct kere inhibit signaling recruited grkct kere inhibits lysophosphatidic acid induced phosphorylation akt whereas golgi recruited grkct kere inhibits cargo transport tgn moreover show golgi recruited grkct kere inhibits model basolaterally targeted apically targeted cargo delivery destined secretory cargo providing first evidence selectivity terms cargo transport regulated last show golgi fragmentation induced ilimaquinone nocodazole blocked inhibition demonstrating key regulator multiple pathways impact golgi morphology thus developed new molecular tool recruitable grkct kere modulate signaling specific subcellular locations demonstrate novel cargo selectivity regulation tgn transport novel role mediating golgi fragmentation
mucin glycan primary determinant mucin functions functions expanded three branch structures including core core blood group synthesized core beta acetylglucosaminyltransferase cgnt alteration cgnt gene expression expected profound effect mucin functions prompted study regulation gene quantitative real time pcr analysis expression gene human tissues airway epithelial cells showed gene expressed primarily mucus secretory tissues rapid amplification cdna ends analysis coupled sequence alignment human genome database revealed gene comprised three exons two introns northern blotting using exon probe showed presence exon transcripts suggesting presence cis regulatory elements proximal region upstream near transcription initiation site analysis dna region promoter reporter transient transfection assay coupled serial deletion linker scanning mutagenesis revealed two positive regulatory regions including promoter activity enhanced trans retinoic acid atra thus promoter region specific hcgnt gene subject regulation atra cis regulatory elements may useful construction mucus cell specific vector therapy mucus hypersecretory diseases
cell division cycle cdc important member rho family overexpressed various human cancers however expression role pancreatic cancer well understood present study designed investigate expression patterns underlying cellular mechanisms cdc first immunohistochemical analysis quantitative real time polymerase chain reaction qrt pcr western blotting performed detect cdc expression clinical pancreatic carcinoma adjacent tissues second differential expression cdc cells normal cells evaluated qrt pcr western blotting third correlation cdc expression well clinicopathological characteristics patient survival analyzed finally cdc knocked examine role vivo vitro results showed significantly increased cdc expression pancreatic tumor tissues compared adjacent normal tissues revealed qrt pcr western blotting immunostaining compared panc cells cdc expression downregulated hpde cells shown qrt pcr western blotting high cdc expression observed pancreatic adenocarcinoma patients significantly associated tumor differentiation median tumor size tumor infiltration stage lymph nodal status stage tnm staging multivariate cox regression analysis revealed cdc expression independent predictor survival patients finally found cdc promoted proliferation panc cells vivo vitro findings reveal cdc might play important role promoting development findings suggest cdc might serve potential prognostic indicator
enzymes tremendously proficient catalysts used extracellular catalysts whole host processes chemical synthesis generation novel biofuels amenable needs biotechnology however often necessary able manipulate physico chemical properties efficient streamlined manner ideally able train catalyze completely new reactions recent years seen explosion interest different approaches achieve laboratory silico remains however gap current approaches computational enzyme design primarily focused early stages design process laboratory evolution extremely powerful tool enzyme redesign always limited vastness sequence space combined low frequency desirable mutations review discusses different approaches towards computational enzyme design demonstrates combining newly developed screening approaches rapidly predict potential mutation hotspots approaches quantitatively reliably dissect catalytic step bridge gap currently exists computational enzyme design laboratory evolution studies
alga cladophora glomerata erupt nuisance blooms throughout lower great lakes since bacterial abundance increases emergence decay cladophora investigated prevalence antibiotic resistance abr cladophora associated bacterial communities gradient gradient large sewage treatment plant stp lake ontario although stps well known sources abr also expected detectable abr gradient wetland communities since receive surface run urban agricultural sources statistically significant differences aquatic bacterial abundance abr found gradient beach samples gradient coastal wetland samples anova holm sidak test decaying free floating cladophora sampled near stp highest bacterial densities overall including ampicillin vancomycin treated plates however quantitative polymerase chain reaction analysis abr genes ampc teta tetb vana environmental communities showed different pattern highest abr gene levels occurred coastal wetland sites vana overall bacterial abr profiles environmental samples distinguishable living decaying cladophora inferring cladophora may control bacterial abr depending life cycle stage results also show spatially temporally dynamic abr nearshore aquatic bacteria warrants research
pancreatic cancer remains aggressive disease year survival rate patients pancreatic cancer eligible radical surgery evidence suggests benefit survival adjuvant chemotherapy gemcitabine fluourouracil resection adjuvant chemoradiotherapy also valid option patients positive margins borderline resectable pancreatic cancer defined involvement mesenteric vasculature limited extension tumors technically resectable high risk positive margins neoadjuvant treatment represents best option achieving resection advanced disease two new chemotherapy treatment schemes folfirinox gemcitabine plus nab paclitaxel showed improvements overall survival compared gemcitabine alone progress pancreatic cancer treatment require better knowledge molecular biology disease focusing personalized cancer therapies near future
aim investigate capacity potentially probiotic strains six bacterial genera induce cytokine production alone combinations order identify potential enhancing synergistic effects order select probiotic bacteria vivo purposes methods cytokine production human peripheral blood mononuclear cells pbmc response stimulation eleven different potentially probiotic bacterial strains streptococcus lactobacillus bifidobacterium lactococcus leuconostoc propionibacterium genera analysed production mrna expression tnf alpha ifn gamma determined elisa northern blotting respectively results tested bacteria induced tnf alpha production best inducers type cytokines ifn gamma streptococcus leuconostoc strains bifidobacterium propionibacterium strains induced higher production studied bacteria stimulation pbmc bacterial combinations result enhanced cytokine production suggesting different bacteria whether gram positive gram negative compete host cell interactions conclusion probiotic thermophilus leuconostoc strains potent inducers type cytokines ifn gamma probiotic lactobacillus strains bacterial combinations result enhanced cytokine production wjg rights reserved
spectrum corticotroph cell adenomas wide though rarely silent corticotroph cell adenomas sca may transform corticotroph cell adenomas associated cushing disease aim study investigate role prohormone convertase transformation sca reviewed records consecutive endoscopic endonasal procedures pituitary adenomas sca follow three patients sca showed clear transformation sca underwent surgery remove recurrent tumour expression analysed immunohistochemistry quantitative real time polymerase chain reaction qrt pcr primary recurrent tumours immunohistochemical expression negative weak three patients initial phase sca strong expression observed majority neoplastic cells tissue specimens obtained three patients time recurrence immunohistochemical expression showed strict correlation levels obtained qrt pcr cases sca change phenotype follow immunohistochemical expression low strictly associated level obtained qrt pcr primary cases recurrent tumours cases study provides insight crucial role protein transformation phenotype sca
human metabolism ethylhexyl phthalate dehp complex yields mono ethylhexyl phthalate mehp numerous oxidative metabolites oxidative metabolites mono ethyl oxohexyl phthalate meohp mono ethyl hydroxyhexyl phthalate mehhp mono ethyl carboxypentyl phthalate mecpp mono carboxymethylhexyl phthalate mcmhp considered better biomarkers dehp exposure assessment mehp urinary levels metabolites generally higher mehp measurements subject contamination urinary levels metabolites three recently identified dehp oxidative metabolites mono ethyl carboxypropyl phthalate mecprp mono oxoethylhexyl phthalate moehp mono ethyl carboxybutyl phthalate mecbp measured adults mecpp mcmhp mehhp present samples analysed mehp oxidative metabolites detected less frequently meohp mecbp mecprp mehp moehp levels dehp metabolites highly correlated confirming common parent omega oxidative metabolites mecpp mcmhp mehhp meohp comprised metabolites measured thus likely best biomarkers dehp exposure assessment percentage unglucuronidated free form excreted urine higher ester linkage carboxylated dehp metabolites compared alcoholic ketonic dehp metabolites percentage unglucuronidated free form excreted urine higher dehp metabolites carboxylated ester side chain compared alcoholic ketonic metabolites differences found dehp metabolite profile adult population six neonates exposed high doses dehp extensive medical treatment neonates mehp represented mecpp eight dehp metabolites measured compared mehp mecpp adults whether observed differences reflect differences route duration exposure age health status individuals presently unknown
intestinal flora consists large number various bacterial species many important multiple functions human metabolism prevention infections diseases immune system increasing knowledge relationship intestinal flora health encouraged research field probiotics prebiotics scientific evidence documented several prophylactic therapeutic effects food supplements
computational modeling essential structural characterization biomolecular mechanisms across broad spectrum scales adequate understanding biomolecular mechanisms inherently involves ability model structural modeling individual biomolecules interactions rapidly progressing however terms broader picture focus shifting toward larger systems level cell modeling involves dynamic realistic representation interactomes vivo crowded cellular environment well membranes membrane proteins cellular components structural modeling cell complements computational approaches cellular mechanisms based differential equations graph models techniques model biological networks imaging data etc structural modeling along computational experimental approaches provide fundamental understanding life molecular level lead important applications biology medicine cross section diverse approaches presented review illustrates developing shift structural modeling individual molecules cell biology studies several related areas covered biological networks automated construction three dimensional cell models using experimental data modeling protein complexes prediction non specific transient protein interactions thermodynamic kinetic effects crowding cellular membrane modeling modeling chromosomes review presents expert opinion current state art various aspects structural modeling cellular biology prospects future developments emerging field elsevier ltd rights reserved
unlike systemic infections little known role repeated localized infections shaping pathogen specific memory cell responses used primary degrees secondary degrees intranasal influenza virus infections mice model study intrinsic memory cell properties show secondary antigen exposure relative single infection generates memory cell responses superior magnitude multiple tissue compartments including blood spleen draining lymph nodes lung unexpectedly regardless significantly higher number degrees memory cells similar degree protection pulmonary challenge observed groups mice containing degrees degrees memory cells mechanistically using pertussis toxin induced migration block showed superior antigen driven proliferation ability relocate site infection allowed degrees memory cells accumulate infected lung first days challenge compensating initially lower cell numbers taken together history antigen exposures localized pulmonary infections altering basic cell biology dictates dynamic properties protective memory cell responses knowledge important implications design novel improvement existing vaccines immunization strategies
purpose colorectal cancer crc fifth common cause cancer deaths china fourth worldwide metastatic dissemination primary tumors considered main cause crc related mortality serine threonine kinase stk gene novel cancer testis antigen found significantly highly expressed gastrointestinal cancers study aimed analyze correlation stk expression patterns metastasization tumor stage grade crc patients results relative stk expression level significantly higher patients lymph node metastasis stk expression levels primary tumorous tissues metastatic patients significantly higher ancts lymph nodes samples rna level protein level materials methods surgical specimens cancerous tissues paired adjacent noncancerous tissues lymph nodes crc cases different clinicopathological features collected expression stk detected measured immunohistochemistry quantitative real time polymerase chain reaction qrt pcr conclusions data suggest stk might potential biomarker detecting monitoring predicting metastatic risk colorectal cancer
pseudomonas aeruginosa opportunistic gram negative pathogen colonizes different tissues utilization diverse mechanisms one may involve breakdown host cell membrane sequential action hemolytic phospholipase phosphorylcholine phosphatase pchp action hemolytic phospholipase phosphatidylcholine produces phosphorylcholine hydrolyzed choline cho inorganic phosphate pchp available biochemical data enzyme demonstrate involvement two cho binding sites catalytic cycle enzyme regulation crystal structure aeruginosa pchp determined folds three structural domains first domain harbors residues involved catalysis well conserved among haloacid dehalogenase superfamily proteins second domain characteristic pchp involved recognition cho moiety substrate third domain stabilizes relative position two fortuitously crystal structure pchp captures molecules bistris bis hydroxyethyl amino hydroxymethyl propane diol active site additional site represents two catalytically relevant complexes one two inhibitory bistris molecules provides basis pchp function regulation site directed mutagenesis along biochemical experiments corroborates structural observations demonstrates interplay different sites cho recognition inhibition structural comparison pchp phosphatases haloacid dehalogenase family provides three dimensional picture conserved catalytic cycle structural basis recognition diverse substrate molecules elsevier ltd rights reserved
motivated problem conditions existence clines genetics show positive zeros cross product regular coulomb wave function tricomi hypergeometric function increasing respect one parameters particular implies eigenvalues certain boundary value problem increasing dimension
live attenuated malaria vaccine plasmodium falciparum sporozoite vaccine pfspz vaccine confers sterile protection controlled human malaria infection chmi plasmodium falciparum parasites homologous vaccine strain final vaccination injectable malaria vaccine demonstrated long term protection chmi using parasites heterologous vaccine strain conducted open label trial pfspz vaccine dose pfspz administered three times intervals malaria naive adults chmi homologous parasites final immunization nine vaccinated volunteers remained without parasitemia compared none six nonvaccinated controls nine nonparasitemic subjects six underwent repeat chmi heterologous pfg parasites final immunization five six remained without parasitemia compared none six nonvaccinated controls pfspz specific cell antibody responses detected vaccine recipients cytokine production cells vaccinated subjects vitro stimulation homologous heterologous pfspz highly correlated interestingly pfspz specific cell responses blood peaked first immunization enhanced subsequent immunizations collectively data suggest durable protection homologous heterologous parasites achieved pfspz vaccine ongoing studies determine whether protective efficacy enhanced additional alterations vaccine dose number immunizations
limbal stemcell lsc deficiency visually debilitating condition caused abnormal maintenance lscs treated transplantation donor derived limbal epithelial cells lecs success depends presence quality lscs transplant understanding immunobiological responses cells within transplants could improve cell engraftment survival however human corneal rings used source lscs always readily available research purposes alternative hypothesized human telomerase immortalized corneal epithelial cell htcec line could used model studying lsc immunobiology htcec constitutively expressed human leukocyte antigen hla class class molecules however stimulated interferon gamma htcecs expressed hla class antigens htcecs also migratory response cxcl expressed stem cell markers nanog oct sox addition htcecs lecs contain side population cells enriched lsc population used cells show htcec cells coexpressed abcg abcb htcec non side population nsp cells also expressed cxcr cells expressed higher levels capable colony formation nsp colonies smaller contained fewer cells addition htcecs expressed delta alpha results suggest htcecline useful model understanding lscbiology using vitro approach without reliance supply human tissue
uses ionic liquids ils alter performance enzymes pretreat cellulosic biomass investigated present study activity beta glucosidase themotoga maritime tmbgla studied phosphate buffer containing imidazolium based ils among imidazolium based ils tested butyl methylimidazolium acetate bmim oac showed improvement hydrolysis activity tmbgla steady state emission spectra bmim oac quenched intrinsic fluorescence tmbgla improvement activity tmbgla induced bmim oac could linked flexibility conformation tmbgla elsevier rights reserved
leprosy triggers complex relationship pathogen host immune response endothelium plays important role immune response directly influencing cell migration infected tissues objective work investigate possible role endothelium leprae infection correlating characteristics endothelial markers expression pattern cytokines thirty six skin biopsy samples cut thick sections stained hematoxylin eosin ziehl neelsen morphological analysis submitted immunohistochemical analysis using monoclonal antibodies icam icam vcam vla immunostaining icam showed significantly larger number stained endothelial cells tuberculoid leprosy cells compared lepromatous samples cells icam revealed significant difference number endothelial cells expressing marker tuberculoid cells lepromatous leprosy cells vcam immunostained showed cells tuberculoid leprosy cells lepromatous leprosy vla exhibited cells tuberculoid leprosy cells lepromatous leprosy samples characteristics tuberculoid leprosy exhibited larger number cells stained icam vcam vla demonstrating importance molecules migration selection cells reach inflamed tissue elsevier ltd rights reserved
stearoyl acyl carrier protein desaturase sad key enzyme determines ratio saturated unsaturated fatty acids higher plants using reverse transcriptase polymerase chain reaction rapid amplification cdna ends full length cdna sad obtained developing leaves cinnamomum longepaniculatum sequence analysis showed deduced amino acid sequence high similarity reported sads csad gene functionally expressed escherichia coli desaturating activity recombinant protein markedly detected assayed vitro adding spinach ferredoxin southern blot analysis indicated gene member small gene family northern blotting revealed csad gene highly expressed developing leaves longepaniculatum results would provide opportunities modifying fatty acid composition longepaniculatum
background prophylactic therapeutic vaccines often depend upon strong activation innate immune system drive potent adaptive immune response often mediated strong adjuvant number adjuvants immunological readouts may consistent across species methods study evaluated innate immunostimulatory potential mrna vaccines humans mice using novel mrna based vaccine encoding influenza hemagglutinin pandemic strain hnpdm model evaluation performed using vitro model human innate immunity vivo mice intradermal injection results results suggest immunostimulation mrna vaccine humans similar mice acts cellular rna sensors genes rlrs ddx rig ifih mda tlrs tlr tlr tlr human clrs clecgp clecd cledl significantly regulated mrna vaccine regulation tlr tlr points involvement mdcs pdcs response mrna vaccine humans humans mice activation pathways drove maturation activation immune cells well production cytokines chemokines known attract activate key players innate adaptive immune system conclusion translational approach allowed identification basic mechanisms self adjuvantation mrna vaccine also comparison response across species response appears relatively conserved least convergent vitro human vivo mouse models
interferon beta ifnb preparations commonly used first line therapy relapsing remitting multiple sclerosis rrms however characterized limited efficacy partly due formation anti ifnb antibodies patients pilot study assessed elisa method presence binding antibodies babs interferon beta years therapy subcutaneous interferon beta rebif rrms patients antibody levels established within year treatment withdrawal used interferons commercially available therapy namely avonex biogen idec limited rebif merck serono betaferon bayer pharma antigens babs reacting rebif found patients depending units expression levels anti ebif antibodies remained high patients patients dropped significantly strong correlations obtained assays anti rebif anti avonex anti rebif anti betaferon anti betaferon anti avonex existence cross reactivity formation antibodies tested formulations interferon beta confirmed levels babs remain significant clinical context assessment first choice screening however methods babs evaluation crucial decisions studies needed confirm results specifically would interest evaluate methods neutralizing antibodies identification assessed binding antibodies nevertheless results support concept interferon nonresponders positive binding antibodies switching therapy alternative disease modifying agent example glatiramer acetate fingolimod natalizumab justified whereas switch another interferon formulation probably benefit
presented integration polymerase chain reaction pcr microdevice surface plasmon resonance spr optical fiber sensor inline one device fluorophore free detection pcr amplification proposed integrated device consisted microfluidic pcr reactor used channel position dependent temperature change optical fiber spr sensor bimetallic coating one device performed amplification dna salmonella spp injected volume microlitter within min also immediately subsequent measurement dna amplicon spr fiber sensor part results showed spr sensor signal increased cycle number due amplicon refractive index smaller sum constituent dntp molecules minimum resolvable dna amplicon generated cycle integrated device could serve dna amplification detection instrument label free nature could allow reusability presented device miniaturization whole system find use point care testing early diagnosis genetic analysis elsevier rights reserved
detected luteinizing hormone receptor lhr mrna immature rat uterus northern blotting downregulation receptor mrna pregnant mare serum gonadotropin pmsg human chorionic gonadotropin hcg treatment administration hcg mrna levels rat uterus declined extremely low level days rebounded reached higher pretreatment values day day levels fold higher control levels cultured uterus displayed hcg concentration dependent increase camp production medium immunohistochemical experiments showed receptor proteins expressed epithelial cells endometrium results suggest functional lhrs present immature rat uterus downregulated signals resulting hcg treatment data may support idea acts uterus inhibit contraction ovulation although precise role lhr uterus remains unknown study may provide model investigate regulation lhr
major technological innovations past decade transformed ability extract quantitative data biological systems unprecedented scale resolution quantitative methods associated large datasets lead exciting new phase discovery across many areas biology however clear threat drown rivers data july stem cell biologists gathered cambridge annual cambridge stem cell symposium discuss quantitative stem cell biology molecules models meeting review provides summary data presented speaker focus quantitative techniques new biological insights emerging
review summarizes present evidence role ykl diagnosis prognosis cause cardiovascular alcoholic liver disease question whether ykl merely marker causal factor development cardiovascular liver disease addressed emphasis mendelian randomization design mendelian randomization approach uses genetic variants associated lifelong high plasma ykl levels largely unconfounded prone reverse causation thus approach mimics controlled double blind randomized trial uses genetic variants rather drug placebo like blinded trial allows inference causality moreover review also covers background molecular biology functions ykl ykl levels healthy individuals reference range role ykl biomarker cardiovascular alcoholic liver disease ykl plasma protein named three terminal amino acids tyrosine lysine leucine molecular weight kda produced local inflammatory cells inflamed tissues lipid laden macrophages inside vessel wall perhaps also hepatic stellate cells observational studies show plasma ykl levels elevated patients cardiovascular liver disease associated disease severity prognosis furthermore elevated plasma ykl levels apparently healthy individuals associated fold increased risk future ischemic stroke venous thromboembolism myocardial infarction suggesting ykl could play role formation embolisms rather atherosclerosis per elevated ykl levels combined excessive alcohol consumption associated years risk alcoholic liver cirrhosis suggesting ykl used strong noninvasive marker predicting alcoholic liver cirrhosis importantly mendelian randomization studies genetically elevated plasma ykl levels associated risk cardiovascular alcoholic liver disease thus suggesting plasma ykl play causal role development diseases despite plasma ykl levels may play role disease progression diagnosis inhibition ykl activity might novel therapy cardiovascular liver diseases
distribution fitness effects dfe new mutations plays fundamental role evolutionary genetics however extent dfe differs across species yet systematically investigated furthermore biological mechanisms determining dfe natural populations remain unclear show theoretical models emphasizing different biological factors determining dfe protein stability back mutations species complexity mutational robustness make distinct predictions dfe differ species analyzing amino acid changing variants natural populations comparative population genomic framework find humans higher proportion strongly deleterious mutations drosophila melanogaster furthermore comparing dfe across yeast drosophila mice humans average selection coefficient becomes deleterious increasing species complexity last pleiotropic genes dfe less variable nonpleiotropic genes comparing four categories theoretical models fisher geometrical model fgm consistent findings fgm assumes multiple phenotypes stabilizing selection number phenotypes defining complexity organism results suggest long term population size cost complexity drive evolution dfe many implications evolutionary medical genomics
background bipolar affective disorder bpd severe mood disorder prevalence similar population pathogenesis bpd poorly understood however strong heritable component identified previous genome wide association studies indicated region coding syne gene increases disease susceptibility syne encodes synaptic nuclear envelope protein nesprin brain specific splice variant syne cpg encoding candidate plasticity gene identified intronic single nucleotide polymorphism strongest genome wide significant association bpd present syne cpg methods screened bpd samples genetic variation syne exons covers cpg region using high resolution melt analysis addition screened two regions increased transcriptional activity one proposed cpg promoter region results conclusion identified six nonsynonymous six synonymous variants genotyped three rare nonsynonymous variants total bpd samples controls burden analysis rare variants show significant association bpd however nine patients compound heterozygotes variants syne cpg suggesting rare coding variants may contribute significantly towards complex genetic architecture underlying bpd imputation analysis whole genome sequencing sample bpd individuals identified additional eight risk variants cpg region syne copyright author published wolters kluwer health inc
fluorescence correlation spectroscopy fcs powerful technique studying diffusion molecules within biological membranes high spatial temporal resolution fcs quantify molecular concentration diffusion coefficient fluorescently labeled molecules cell membrane technique ability explore molecular diffusion characteristics molecules plasma membrane immune cells steady state without processes affecting result actual measurement time fcs suitable studying diffusion proteins expressed levels typical endogenous proteins straightforward robust method determine diffusion rate cell membrane proteins primary lymphocytes demonstrated effective way perform measurements antibody stained live cells commonly occurring observations acquisition described recent advancements development photostable fluorescent dyes utilized conjugating antibodies interest appropriate dyes bleach extensively measurements additionally allows detection slowly diffusing entities common feature proteins expressed cell membranes analysis procedure extract molecular concentration diffusion parameters generated autocorrelation curves highlighted summary basic protocol fcs measurements provided followed immunologists understanding confocal microscopy previous experience techniques measuring dynamic parameters molecular diffusion rates
understanding rates spectra fitness effects spontaneousmutations fundamental answering key questions evolution molecular biology disease genetics conservation biology estimate mutation rates evaluate effect selection new mutations propagated mutation accumulation lines daphnia pulex generations maintained non population conditions selection could act experiments started obligate asexual progenitor clone sequencing genomes implementing series validation steps informed bioinformatic analyses identified total single nucleotide mutations snms lines corresponding mutation rate per nucleotide per generation high overall rate loss heterozygosity loh per site per generation due large ameiotic recombination event spanning entire arm chromosome similar several hemizygous deletion events spanning similar non population found significantly fewer mutations expected based rate derived experiment indicating purifying selection likely acting remove new deleterious mutations observed surprisingly high level genetic variability non population propose driven balancing selection findings suggest positive negative selection new mutations powerful effective strictly clonal population
malaria devastating parasitic disease humans caused unicellular protozoa plasmodium genus plasmodium falciparum responsible million deaths year life cycle complex transmission parasite humans via mosquitos involving remarkable series morphological transformations bloodstream parasites undergo asexual multiplications inside red blood cell rbc mature ring trophozoite schizont stages sexual development resulting gametocytes symptoms malaria pathology caused asexual blood stage parasites flow cytometry methods previously used detect malaria infected rbcs live fixed cells using dna hoechst rna thiazole orange stains using imaging flow cytometry developed improved methods identifying quantifying four parasite blood stages technique allows multi channel high resolution imaging individual parasites well detailed morphological quantification irbcs cultures moreover measuring irbc morphological properties eliminate corrupted extra cellular dying parasites analysis providing accurate quantification robust measurement parasitemia profile new method valuable tool malaria molecular biology research drug screen assays elsevier inc rights reserved
scopenaturally occurring isothiocyanates itcs investigated chemopreventive actions however limited studies determined potential regulation hepatic glutathione transferase gsta arylalkyl alkyl itcs methods resultsthe present study designed investigate effects itcs gsta expression upstream signaling analyzed northern blotting pcr immunoblotting promoter luciferase assay single dose ethyl isothiocyanate phenethyl isothiocyanate peitc enhanced gsta mrna levels rats three consecutive injections arylalkyl itcs resulted gene induction peitc potent sustained inducer gsta vivo peitc induced gsta mrna protein expression hiie cells peitc increased levels nuclear factor erythroid related factor ccaat enhancer binding protein ebp cells transfected pgl pgl ebp deleted promoter construct failed increase gsta promoter activity peitc effects peitc downstream multiple cellular signaling including phosphoinositide kinase pik jun terminal kinase jnk protein kinase pka conclusionthese results demonstrated peitc efficacious arylalkyl itcs induction gsta vivo vitro transactivation ebp nuclear factor erythroid related factor downstream multiple signaling pathways involved induction
microsatellites commonly used markers population genetics increasingly employed determine population structure phytoplankton populations developed seven polymorphic microsatellite markers domoic acid producing diatom pseudo nitzschia australis using markers thirty australis isolates genotyped isolates monterey bay california northern coast oregon number alleles per locus ranged two eight observed heterozygosities ranged two isolates genetically distinct initial population differentiation analysis indicated significant differences pacific northwest isolates monterey bay isolates pseudo nitzschia australis microsatellites appear species specific based cross amplification tests pseudo nitzschia fraudulenta cleve hasle pseudo nitzschia seriata cleve peragallo pseudo nitzschia pungens grunow cleve pseudo nitzschia multiseries hasle hasle published elsevier gmbh
understanding influence ubiquitously present plant steroids mammalian cell biology currently interest feedback inhibition hmgcoa reductase hmgcr catalytic activity transformation hmg coa mevalonate significant regulatory step sterol biosynthetic pathway assess role dietary steroids biochemical transformation phytosteroid isoform homobrassinolide pure obtained godrej agrovet india used determine effect mammalian hmg coa reductase photometric assay pure human select rat tissue hmgcr post oral feed pcr hmgcr gene expression silico docking hmgcoa hmgcr protein template carried using oral feed regimen pure noted decrease liver kidney testicular hmgcr enzyme activity hmgcr gene expression activity pure human hmgcr due plant oxysterol silico docking studies yielded binding metrics hmgcr lower hmgcoa hmgcr indicating stronger binding hmgcr ligand exerts differential effects rat tissue hmgcr regulates liver hmgcr gene expression significantly inhibits hmgcr activity
central basis ecological immunology ideas costs trade offs immunity life history traits physical barrier insect cuticle provides key resistance trait tenebrio molitor shows phenotypic variation cuticular colour correlates resistance ento mopathogenic fungus metarhizium anisopliae first examined whether relationship cuticular colour variation two aspects cuticular architecture hypothesised may influence resistance fungal invasion cuticle thickness porosity second tested hypothesis tyrosine semi essential amino acid required immune defence cuticular melanisation sclerotisation act limiting resource supplementing larval diet subsequently examining adult cuticular colouration thickness found stock beetles beetles artificially selected extremes cuticular colour thicker less porous cuticles darker thinner porous cuticles lighter showing colour varies two architectural cuticular features experimental supplementation larval diet tyrosine led development darker adult cuticle affected thickness sex specific manner however affect two immune traits results study provide mechanism maintenance cuticular colour variation species beetle darker cuticles thicker production potentially limited resource constraints differential investments resistance mechanisms sexes elsevier ltd rights reserved
among head neck squamous cell carcinoma hnscc incidence oropharyngeal scc opscc increasing contrast carcinoma origin subsites human papillomavirus hpv recognized significant risk factor carcinogenesis opscc hpv related opscc patients tend relatively young less exposed tobacco alcohol relatively high socioeconomic status education level distinct hpv unrelated classical opscc neck metastases tend aggressive cystic better response treatment resulting improved prognosis hpv related opscc led reconsidering clinical staging treatment approaches clinical trials treatment deintensification reduce acute late toxicity without compromising efficacy conducted review hpv related opscc focuses current generally accepted facts regarding biology epidemiology therapeutic strategy new disease entity
full length cdna immunogenic protein cloned cdna library local egyptian cattle tick boophilus annulatus antibodies raised annulatus larval proteins used screen cdna expression library cloned fragment sequenced showed open reading frame encoding protein amino acids comparison deduced amino acid sequence protein data bank revealed sequence related sequence isolated hard tick haemaphysalis qinghaiensis southern blot analysis annulatus genomic dna showed cloned cdna hybridized double bands per restriction digest suggesting cloned cdna double copy gene amino acid analysis cloned gene revealed presence two casein kinase phosphorylation sites terminal domain suggesting molecule may involved signal transduction gene expression pathways pcr northern blotting revealed presence two isoforms gene salivary glands day old eggs cloned gene without signal peptide expressed escherichia coli promotor pet vector purified denaturation conditions purified protein appeared single band sds page molecular weight around kda including histidine tag vector antibodies raised purified molecule used detect annulatus homologue gene whole tick larvae gut protein extracts immunoblotting revealed presence molecule whole tick larval protein extracts gut protein extract using antibodies homologues gene detected tick species hyalomma dromedarii rhipicephalus ornithodoros moubata elsevier rights reserved
missense variants represent significant proportion variants identified clinical genetic testing absence strong clinical functional evidence american college medical genetics recommends findings classified variants uncertain significance vus vuss may reclassified better inform patient care new evidence available critical methods used reclassification robust order prevent inappropriate medical management strategies unnecessary life altering surgeries effort provide evidence classification several silico algorithms developed attempt predict functional impact missense variants amino acid sequence conservation analysis report analysis comparing internally derived evidence based classifications results obtained six commonly used algorithms compiled dataset variants brca brca mlh msh previously classified laboratory evidence based variant classification program compared internally derived classifications obtained following silico tools align gvgd condel grantham analysis mapp mmr polyphen sift despite based similar underlying principles algorithms displayed marked divergence accuracy specificity sensitivity overall accuracy ranged matthews correlation coefficient ranged condel weighted average multiple algorithms perform significantly better individual components evaluated results suggest silico algorithms evaluated provide reliable evidence regarding clinical significance missense variants genes associated hereditary cancer
choline officially recognized essential nutrient institute medicine iom significant variation dietary requirement choline explained common genetic polymorphisms wide ranging roles human metabolism cell structure neurotransmitter synthesis choline deficiency thought impact diseases liver disease atherosclerosis possibly neurological disorders choline found wide variety foods eggs meats rich sources choline north american diet providing milligrams per grams mean choline intakes older children men women pregnant women far adequate intake level established iom given importance choline wide range critical functions human body coupled less optimal intakes among population dietary guidance developed encourage intake choline rich foods
several major market operators argue current level knowledge quality scant justify switch large scale production triploid salmon aim present study therefore elucidate rearing conditions degrees affect flesh quality triploid atlantic salmon salmo solar reference diploid salmon kept equal conditions equal genetics used main design discriminant holding temperature increased temperature gave increased blood lactate rigor index drip loss content astaxanthin intensity redness reduced muscle cathepsin activity fillet lightness salmon kept degrees grew fastest concluded ploidy gave less variation temperature triploids characterized lower blood haernatocrit hct higher collagenase activity average paler less yellowish fillets elsevier ltd rights reserved
background representatives trematode family fasciolidae responsible major socio economic losses worldwide fascioloides magna important pathogenic liver fluke wild domestic ungulates date limited number studies concerning molecular biology magna exist therefore objective present study determine complete mitochondrial genome sequence magna assess phylogenetic relationships fluke trematodes based mtdna dataset findings complete magna genome sequence gene content arrangement magna genome similar fasciola spp except trne located trng non coding region magna genome phylogenetic relationships magna selected trematodes using bayesian inference reconstructed based concatenated amino acid sequences protein coding genes confirmed genus fascioloides closely related genus fasciola intergeneric differences amino acid composition genera fascioloides fasciola ranged conclusions determination magna genome sequence provides valuable resource investigations phylogeny family fasciolidae trematodes represents useful platform designing appropriate molecular markers
laryngeal carcinoma related gene lcrg implicated tumor suppressor laryngeal cancer however micrornas small non coding rnas approximately nucleotides length regulate lcrg expression remain elusive study quantitative pcr analysis first showed average level mir elevated primary laryngeal carcinoma tissues compared paired adjacent non tumor tissues thus explored potential regulation mir lcrg pita algorithm predicted two sites within lcrg mrna utr reside position position respectively might targeted mir dual luciferase reporter assay confirmed mir mimic specifically decreased luciferase activity reporter harboring utr target site respect utr site influence mir luciferase activity sequence specific observed mir mimic transfection decreased lcrg protein human laryngeal carcinoma hep cells indicated western blotting analysis promoted cell growth migration invasion evidenced mtt assay transwell migration assay matrigel invasion assay note effects mir inhibitor treatment opposite mir mimic taken together study identifies tumor suppressor lcrg targeted oncogenic mir finding may help better understand dysregulation cancer associated genes associated micrornas eventually improve diagnosis target therapy laryngeal carcinoma
biofilm formation usually increases antimicrobial resistance capacity staphylococcus aureus poses considerable challenges successful eradication staphylococcal infections little known biofilm forming capacity antibiotic resistance pattern dominant aureus clonal lineages china study disk diffusion method microtiter plate assay respectively performed determine antibiotic resistance biofilm forming capacity different aureus isolates belonging dominant clonal lineages china shown isolates different clonal lineages obvious variations biofilm forming capacity resistance individual antibacterial agents frequently observed erythromycin azithromycin tested isolates screened presence resistance genes polymerase chain reaction pcr significant correlation found clonal lineage distribution resistance genes overall results indicate biofilm producers aureus greater likelihood carry antibiotic resistance genes non biofilm producers implying biofilm may promote dissemination antibiotic resistance determinants practical applicationsstaphylococcus aureus leading cause nosocomial infections often associated food poisoning worldwide biofilm formation aureus influences efficacy antimicrobial therapy promotes persistence infections however knowledge biofilm formation capacity isolates belonging different clonal lineages little therefore study biofilm formation capacity antibiotic resistance pattern dominant aureus clonal lineages could help fix information gap
cysteine susceptible reactive oxygen species response posttranslational thiol modifications reversible disulfide bond formation arisen protective mechanisms undesired vivo cysteine oxidation gram negative bacteria major defense mechanism cysteine overoxidation formation mixed protein disulfides low molecular weight thiols glutathione glutathionylspermidine review discuss mechanistic aspects glutathionylspermidine prokaryotes extend potential use eukaryotes proteomics biochemical applications example tissue transglutaminase glutathionylation
gene expression profiling suprachiasmatic nucleus ventrolateral preoptic area lateral hypothalamus used identify genes regulated diurnally hypothalamus mus musculus putative transcription regulator cysteine histidine rich domain containing zinc binding protein previously described brain found cycle diurnally hypothalamus forebrain peak levels mrna expression dark phase mrna brain type fatty acid binding protein found change rhythmically hypothalamic extra hypothalamic brain regions reaching peak levels early light phase suggesting lipid metabolism circadian regulation astrocytes rhythmically expressed genes suprachiasmatic nucleus identified compared previous reports meta analysis genes held common included fabp period gene per also identified genes implicated guanosine mediated signaling pathways included dexamethasone induced ras related protein one dexras regulator protein signaling rgs ras like family member northern blotting confirmed diurnal changes mrna expression hypothalamus genes ras like family member examined detail using situ hybridization antiphase diurnal changes expression suprachiasmatic nucleus arcuate nucleus identified implicating gene circadian related guanosine mediated signaling transcription transactivator protein cbp lnteracting transactivators glutamic acid aspartic acid rich carboxyl terminal domain previously identified brain enriched suprachiasmatic nucleus discrete regions hypothalamus forebrain potential regulatory role cbp interacting transactivators glutamic acid aspartic acid rich carboxyl terminal domain transcription genes like tgf alpha implicates protein diurnal activity rhythms results demonstrate ability gene expression profiling identify potential candidates important circadian homeostatic processes published elsevier ltd behalf ibro
cervical cancer second common female malignancy characterized consistent presence human papillomavirus inappropriate activation notch signaling associated various types cancer however role notch cervical cancer remains unclear present study aimed investigate role notch cervical cancer methods used included generation plasmids viability assays polymerase chain reaction western blotting present findings demonstrated cervical cancer samples also consistently exhibit abnormal activation notch pathway data also indicated different numb isoforms may opposite effects proliferation cervical cancer cells result activated notch signaling pathway regulates alternative splicing numb gene affects proliferation cervical cancer cells findings suggest activated notch signaling may lead development cervical cancer regulating numb splicing thus numb splice variants may potential clinical marker indicating cervical cancer genesis development
bacteria planctomycetes verrucomicrobia chlamydiae pvc superphylum exceptions otherwise dominant mode division binary fission based interaction ftsz protein peptidoglycan biosynthesis machinery pvc bacteria deprived ftsz protein also thought lack bacteria divide still one major mysteries microbiology presence recently revealed planctornycetes chlamydiae proteins related synthesis shown implicated division process chlamydiae providing important insights pvc mechanisms division review historical lack observation pvc bacteria recent detection two phyla involvement chlamydial cell division based detection related proteins pvc proteomes consider possible evolution diverse division mechanisms bacteria conclude summarizing known remains understood evolutionary cell biology pvc division modes
explore influence direct repeat sequence drs bacillus chitinase genes heterogonous expression escherichia coli cloned sequenced entire open reading frame orf upstream sequences chitinase chib chitinase chimy bacillus thuringiensis bacillus licheniformis pair drs found upstream chi gene chi orfs series truncated drs cloned transformed coli blue activity transformants without drs significantly higher chitinase assays transformants containing drs sos page showed part full deletion drs increased chi gene expression approximately fold respectively northern blotting revealed deletion drs regions increased chib chimy mrna expression specific binding dna binding factors coli cell lyaste observed chib chimy promoter regions drs elements first investigation demonstrate heterologous expression bacillus chi genes coli negatively regulated upstream drs regions act cis acting elements elsevier inc rights reserved
stem cells emerged important approach repair regenerate damaged tissues organs show great therapeutic potential variety diseases however low survival engrafted stem cells still remains major challenge stem cell therapy major hormone pineal gland melatonin shown play important role regulating physiological pathological functions stem cells promoting proliferation migration differentiation thus melatonin combined stem cell transplantation displayed promising application potential neurodegenerative diseases liver cirrhosis wound healing myocardial infarction kidney ischemia injury osteoporosis etc exerts physiological pathological functions anti oxidant anti inflammatory antiapoptosis anti ageing properties summarize recent advances exploring biological role melatonin stem cells discuss potential applications stem cell based therapy elsevier ltd rights reserved
mutations bone morphogenetic protein bmp humans deletion bmp related protease tolloid like tll mice lead osteogenesis imperfecta show progressive periodontal defects mice bmp tll conditionally ablated including malformed periodontal ligament pdl recently shown play key roles normal alveolar bone formation significant loss alveolar bone mass sharp reduction cellular cementum molecular mechanism studies revealed dramatic increase uncleaved precursor type collagen procollagen reduction dentin matrix protein dmp partially responsible defects extracellular matrix ecm formation mineralization also showed marked increase expression matrix metallopeptidase mmp tartrate resistant acid phosphatase trap leading acceleration periodontal breakdown finally demonstrated systemic application antibiotics significantly improved alveolar bone pdl damage knockdown phenotype thus shown partially secondary pathogen induced inflammation together identification novel roles bmp tll maintaining homeostasis periodontal formation partly via biosynthetic processing procollagen dmp provides novel insights key contributions extracellular matrix environment periodontal homeostasis contributes toward understanding pathology periodontitis
study aimed evaluate recovery structurally intact human norovirus nov kimchi fermentation varying temperatures lactic acid bacteria lab acidity storage fermentation also measured assess correlation nov reduction microbial physicochemical property alterations lab number nov titer acidity ability nov gii persist kimchi stored degrees degrees survivability determined using nano magnetic beads conjugated poly methyl vinyl ether maleic anhydride combined quantitative real time reverse transcription polymerase chain reaction amplification investigated days post inoculation nov detected test samples days although nov recovery quantity reduced degrees degrees login genomic copies reaction time required reduce amount virus logic survival plots nov determined using modified weibull model days degrees days degrees results indicate nov food preparation processing able persistently survive kimchi therefore preventing nov transmission important protecting kimchi nov contamination elsevier ltd rights reserved
dysregulation nkd identified several solid tumors however status nkd expression clinical implication acute myeloid leukemia remain largely elusive nkd transcript level bone marrow mononuclear cells detected real time quantitative polymerase chain reaction novo acute myeloid leukemia patients controls clinical significance nkd expression obtained comparison patients low high nkd expression nkd messenger rna level significantly decreased acute myeloid leukemia patients compared controls significant differences patients low high nkd expression sex age peripheral blood cells bone marrow blasts french american british world health organization subtypes karyotypes karyotypic classifications although significant difference observed complete remission rate nkd low nkd high patients kaplan meier analysis revealed nkd low patients showed shorter overall survival time nkd high patients whole cohort acute myeloid leukemia non acute myeloid leukemia cytogenetically normal acute myeloid leukemia multivariate analyses disclosed low nkd expression independent risk factor cytogenetically normal acute myeloid leukemia patients hazard ratio moreover prognostic value nkd expression confirmed gene expression profile data cytogenetically normal acute myeloid leukemia patients nkd showed significantly increased level induction chemotherapy achieved complete remission follow paired acute myeloid leukemia patients findings indicated reduced nkd expression associated unfavorable clinical outcome cytogenetically normal acute myeloid leukemia
penaeid shrimps represent economically important decapod group egyptian capture fisheries till absence proper morphological genetic tools species identification negatively affecting proper management fisheries especially associated scarcity data fisheries species high economic value ones suffering overfishing present study sampled three penaeid species prevail egyptian capture fisheries mediterranean penaeus semisukatus metapenaeus monoceros trachypenaeus curvirostris morphological clues identification species thoroughly recorded furthermore dna extracted species partial fragments cytochrome oxidase subunit rrna genes amplified using polymerase chain reaction pcr sequenced new barcodes species added genbank database confirmed thorough morphological identification discrepancies detected samples genbank database whenever available hence phylogenetic analyses ensued proper placement samples closest relatives previously submitted genbank moreover morphometric studies conducted provide fundamental parameters important fisheries management currently studied shrimp species parameters tested study provided tool select appropriate stocks successful hatcheries added value growing sector shrimp aquaculture egypt study first kind egypt provides morphological genetic clues identifying species also assessing fisheries mediterranean supreme fishery egypt elsevier rights reserved
tremella fuciformis one higher basidiomycetes basidiospore reproduce yeast like conidia also called blastospore budding yeast like conidia fuciformis monokaryotic easy culture submerged fermentation similar yeast thus good recipient cell exogenous gene expression study expression plasmid pan containing promoter gpd derived aspergillus nidulans selectable marker gene hph conferring resistance hygromycin plasmid plg hph containing promoter gpd derived lentinula edodes selectable marker gene hph transformed yeast like conidia fuciformis peg mediated protoplast transformation respectively primary putative transformants selected sandwich screening method selective medium containing hygromycin putative transformants obtained primary putative transformants transferred pdsa plates containing hygromycin second round selection experimental results showed optimal concentration peg mediating protoplast transformation pcr southern blotting confirmed selectable marker gene hph integrated effectively genome yeast like conidia fuciformis plasmid plg hph transformation transformation efficiency transformants per jig dna hph gene integrated genome yeast like conidia plasmid pan transformation however transformation efficiency transformants per dna presence hph gene genome transformants generations sub culturing pdsb medium confirmed pcr suggesting foreign gene hph stable subculture
human leukaemia resistance chemotherapy leads treatment ineffectiveness failure previous studies indicated cancers increased levels aerobic glycolysis insensitive numerous forms chemotherapy respond poorly radiotherapy whether glycolysis serves key role drug resistance leukaemia cells remains unclear present study systematically investigated aerobic glycolytic alterations regulation adriamycin adm multidrug resistant mdr adm sensitive leukaemia cells normoxia association drug resistance improper glycometabolism cell proliferating activity assessed mtt colorimetric assay glycolysis including glucose consumption lactate export key enzyme activity determined corresponding commercial testing kits expression levels hexokinase lactate dehydrogenase ldha glucose transporter glut akt akt mammalian target rapamycin mtor mtor myc hypoxia inducible factor alpha hif alpha analyzed western blot reverse transcription quantitative polymerase chain reaction qpcr adm cells exhibited increased glucose consumption lactate accumulation increased lactate dehydrogenase hexokinase pyruvate kinase activities reduced phosphofructokinase activity addition adm cells expressed significantly glut notably inhibition glycolysis effectively killed sensitive resistant leukaemia cells potently restored sensitivity mdr cells anticancer agent adm akt serine threonine kinase akt mechanistic target rapamycin mtor signalling pathway crucial regulator glycometabolic homeostasis mediated activation upregulation myc expression levels adm cells directly stimulated glucose consumption enhanced glycolysis conclusion present study demonstrated mdr leukaemia cells exhibit increased aerobic glycolytic activity may responsible resistance chemotherapeutics leukaemia mdr cells via activation akt mtor myc signalling pathway therefore inhibition aerobic glycolysis may potential therapeutic strategy efficiently treat multidrug resistance relapsed refractory leukaemia cancers
bay bengal one productive ecosystems northern indian ocean harbours rich community cetaceans including indo pacific bottlenose tursiops aduncus humpback sousa spp dolphins taxonomy genera controversial within indian ocean seem divided phylogenetically discrete units range east west within sousa genus plumbea distributed western indian ocean chinensis distributed eastern indian western pacific ocean aduncus discontinuous distribution throughout indo pacific ocean two different phylogenetic units known exist one along eastern african coast another one eastern indian west pacific ocean study investigate phylogeography indo pacific humpback bottlenose dolphins northern bay bengal sequenced mitochondrial dna control region bottlenose humpback dolphins compared results previously published sequences within genus cases found bangladesh dolphins genetically different neighbouring populations bangladesh aduncus seem closely related african aduncus form pacific form sousa spp seem closely related individuals australia genetic uniqueness populations important evolutionary implications due isolation coastal distribution geographic cul sac characterized extreme infusion redistribution recycling biological productivity conservation implications since survival threatened particular fatal interactions fisheries suggest particular extreme oceanographic conditions found bay bengal may driving speciation dolphins marine megafauna
accurate identification plant pathogens crucial towards developing sustainable control strategies ensure sustainable economic agricultural production aim study detect characterize potato virus pvy isolates infecting potato solanum tuberosum msinga district province kwazulu natal south africa potato leaf samples exhibiting virus like symptoms collected four different areas district initial detection pvy leaf samples done using triple antibody sandwich elisa pvy positive samples tested using antibodies specific pvy serotypes nicotiana tabacum samsun plants individually mechanically inoculated pvy elisa positive samples symptoms inoculated tobacco plants monitored week period consisted vein clearing faint mosaic patterns veinal necrosis symptoms characteristic pvyn pvy wilga pvyntn strains reverse transcription polymerase chain reaction using primers specific coat protein gene pvy performed confirmation test total rna four randomly selected pvy elisa positive samples sample representing four areas surveyed strains pvyn pvyo identified second part study aimed analyse full genome sequences pvy isolates mod snep order understand evolution virus msinga achieve total rna extracted tobacco leaves tabacum samsun inoculated selected four pvy isolates used template next generation sequencing ngs ngs run illumina hiseq using paired end chemistry reads novo assembly generated reads performed resulting contigs subjected blast genbank database order identify pvy genomes pvy isolates aligned closely related non recombinant pvy sequences comprising following strains pvyn pvyo pvyntn pvyc recombination events assessed using rdp software phylogenetic results revealed pvy isolate snep belonged pvyntn strain isolate pvymod pvy wilga strain group recombination analyses confirmed occurrence pvy recombinant strains msinga district widespread presence pvy occurrence recombinant strains msinga serious implications management pvy diseases small scale farmers growing potato livelihood elsevier ltd rights reserved
present study aimed evaluate neuroprotective effects nbp mice models tbi well possible role nrf pathways assumptive neuroprotection mice modified marmarou weight drop model employed induce tbi icr mice randomly assigned four experimental groups sham tbi tbi vehicle tbi nbp nbp administered via intraperitoneal injection following tbi administration nbp significantly ameliorated effects brain injury including neurological deficits brain water content cortical neuronal apoptosis furthermore level malondialdehyde activity superoxide dismutase sod paired glutathione peroxidase gpx restored nbp treatment group nbp promoted translocation nrf protein cytoplasm nucleus markedly increased expressions nrf pathway related downstream factors including hemeoxygenase nad quinone oxidoreductase nqo prevented decline antioxidant enzyme activities including sod gpx nbp enhanced translocation nrf nucleus cytoplasm verified western blot immunofluorescence additionally upregulated expression nrf downstream factors nqo also confirmed via western blot real time quantitative polymerase chain reaction conclusion nbp administration may increase activities antioxidant enzymes attenuate brain injury tbi model potentially via mediation nrf pathway
anticoagulant heparin shown possess important biological functions vary according fine structure variability within heparin structure occurs owing biosynthesis animal tissue based recovery adds another dimension complex polymeric structure structural variations chain length sulfation patterns mediate interaction many heparin binding proteins thereby eliciting complex biological responses advent novel chemical enzymatic approaches polysaccharide synthesis coupled high throughput combinatorial approaches drug discovery facilitated increased effort understand heparin structure activity relationships improved understanding would offer potential new therapeutic development engineering polysaccharides bioengineering approach requires amalgamation several different disciplines including carbohydrate synthesis applied enzymology metabolic engineering process biochemistry
lipoprotein variant ldl carrying adhesive glycoprotein apo leading risk factor cardiovascular disease lipoprotein found humans subhuman primates rarely lower mammals better understanding evolutionary advantage molecule elucidate physiological role developed new mouse model two characteristics human metabolism expression lack endogenous ascorbate vitamin production show dietary deficiency ascorbate increases serum levels moreover chronic hypoascorbemia complete depletion ascorbate scurvy leads accumulation vascular wall parallels atherosclerotic lesion development results suggest dietary ascorbate deficiency risk factor atherosclerosis independent dietary lipids provide support concept functions mobile repair molecule compensating structural impairment vascular wall morphological hallmark hypoascorbemia scurvy
bhendi yellow vein mosaic virus byvmv causes bhendi yellow vein mosaic disease monopartite begomovirus associated betasatellite previous studies shown protein byvmv acts suppressor post transcriptional gene silencing activates transcription localizes nucleus interacts karyopherin alpha probe role symptom determination virus replication infectious clones byvmv containing two stop codons orf created used infection studies nicotiana benthamiana plants infiltrated infectious clones harboring stop codons orf develop symptoms unlike plants infiltrated wild type byvmv southern blotting real time pcr analysis revealed viral load reduced drastically plants infected byvmv containing nontranslatable version orf however recovery viral dna replication infiltrated wild type betasatellite hence conclude protein byvmv plays important role symptom determination viral dna replication
angiotensin ang plays major role vascular remodelling matrix metalloproteinases mmps tissue inhibitors timps involved tissue remodelling processes aim present study investigate whether angii modulates timp expression rat aortic smooth muscle cells vivo angiotensin per min angii losartan per day normal saline administered continuously osmotic minipumps sprague dawley rats week addition effect endogenous angii timp expression evaluated renovascular hypertensive rats two kidney one clip one kidney one clip models control rats sham sham rats underwent sham clipping left renal artery end treatment plasma renin activity measured radioimmunoassay aortic timp mrna expression evaluated real time polymerase chain reaction northern blotting protein expression evaluated immunohistochemistry systolic blood pressure sbp measured twice week tail cuff method exogenous angii administration produced expected increase sbp compared control saline treated group increase sbp abolished angii losartan treated rats administration angii caused significant increase timp expression rat aortic smooth muscle cells abolished angii losartan treated rats renovascular hypertensive rats sbp higher rats compared corresponding sham operated rats plasma renin activity higher rats compared groups expression timp significantly increased rats vivo data demonstrate exogenous endogenous angii increases timp expression rat aortic smooth muscle cells effect dependent angii induced increase blood pressure mediated angiotensin receptors
numerous evidences indicate aspirin usage causes significant reduction colorectal cancer however molecular mechanisms aspirin preventing colon cancer largely unknown quantitative reverse transcription polymerase chain reaction qrt pcr frequently used method identify target molecules regulated certain compound however method needs stable internal reference genes analyze expression change targets study transcriptional stabilities several traditional reference genes evaluated colon cancer cells treated aspirin also suitable internal reference genes screened using microarray identified using genorm normfinder softwares validated cell lines xenografts showed three traditional internal reference genes beta actin gapdh tubulin suitable studying gene transcription colon cancer cells treated aspirin identified validated tmem pqlc ideal internal reference genes detecting molecular targets aspirin colon cancer vitro vivo study reveals stable internal reference genes studying target genes aspirin colon cancer contribute identify molecular mechanism behind aspirin preventing colon cancer
copper trace mineral plays important role human metabolism largely allows many critical enzymes function properly little known copper content nigerian foods paper copper contents several typical nigerian foods determined samples collected kanam plateau state central region nigeria samples wet ashed according protocol hill anal chem concentrations copper samples determined using inductively coupled mass spectrophotometry crop wide variation copper content highest copper content found cowpea vigna unguiculata dry weight lowest copper content found white maize yellow maize zea mays values dry weights respectively foods white sorghum red sorghum sorghum bicolor millet pennisetum glaucum groundnuts arachis hypogea copper contents varying values well supplemental values day could interfere zinc absorption thus among staple foodstuffs areas sampled cowpea appears richest source dietary copper followed groundnut two maize varieties poorest
endovascular stents proven effective treating coronary peripheral arterial occlusions since first attempts metals used make devices generally selected designed highly resistant corrosion therefore almost totality metallic biomaterials implanted long term basis however complications associated permanent stents instent restenosis thrombosis often reported order reduce complications would clinically useful develop new family degradable stents interesting material fabrication degradable stents based magnesium essential element involved human metabolism success using magnesium alloys fabrication endovascular devices closely related properties selected alloy context test bench specifically designed reproduce physiological conditions stents submitted implanted coronary arteries test bench validated using magnesium based alloy results showed corrosion rate corrosion mechanisms vary applied shear stress corrosion products strongly depend composition corrosive solution test bench thus useful investigations development metallic alloys degradable biomaterials acta materialia inc published elsevier ltd rights reserved
study production transgenic goats using sperm integrate exogenous dna artificial insemination carried technical protocols sperm mediated gene transfer smgt goat optimized standard sperm parameters ability bind foreign genes assessed select suitable sperm donor bucks total oestrous divided groups inseminated using different methods sperm numbers groups iii inseminated fresh semen similar sperm frozen thawed semen sperm respectively conventional intra cervical group frozen thawed semen sperm intrauterine total genomic dnas extracted ear biopsies offspring presence pegfp dna screened pcr southern blotting analysis total live kids produced kids tested transgene positive basis agarose gel electrophoresis pcr amplified fragment southern blotting analysis samples showed positive kids transgenic ratio detected using pcr using southern blotting positive kid rate assayed pcr southern blotting frozen thawed goat semen higher untreated semen results show transgenic goats produced efficiently method artificial insemination using sperm cells integrate exogenous dna intrauterine insemination allowed low numbers dna transfected spermatozoa used satisfactory fertility
accurate timely detection transgene copy number sugarcane currently hampered requirement use southern blotting needing relatively large amounts genomic dna therefore continued growth maintenance bulky plants containment glasshouses addition sugarcane genome polyploid aneuploid complicating identification appropriate genes use references development high throughput method using bioinformatic techniques followed vitro testing two genes appear occur per base genome sugarcane identified using genes reference genes high throughput assay employing qpcr developed tested using group sugarcane plants contained unknown numbers copies nptii gene encoding kanamycin resistance using assay transgene copy numbers identified comparison southern blotting accurately identified number transgene copies one line inference another able provide accurate estimation transgenic lines containing numerous copies nptii gene using reference genes identified study high throughput assay determination transgene copy number developed tested sugarcane method requires much less input dna performed much earlier production transgenic sugarcane plants allows much efficient assessment numerous potentially transgenic lines southern blotting
digital pcr dpcr powerful method absolute quantification rare mutation detection nucleic acids however available dpcr platforms require either expensive instruments complicated operation limit extensive application paper describes robust self partition chip perform dpcr simple inexpensive format chip constructed sandwiching micromolded surfactant doped pdms layer two glass slides containing reaction compartments two simple strategies glass pdms glass sandwich configuration surfactant doped surface modification used enhance pcr compatibility enable efficient amplification chip minimizing water loss nonspecific adsorption protein furthermore powered pre degassing pdms substrate attached pdms slab chip autonomously loads partitions sample high density array microwells performing dpcr analysis evaluated quantitative capabilities dpcr chip measuring ten fold serial dilution genomic dna lung cancer cell line finally also demonstrate feasibility accurate measurement small copy number variations exhibited better accuracy real time quantitative pcr qpcr simple low cost platform promises accelerate widespread use dpcr elsevier rights reserved
evolutionary thinking continues challenge views health disease yet communication gap evolutionary biologists toxicologists recognizing connections among developmental pathways high throughput screening birth defects humans increase capability identifying potential developmental toxicants humans propose apply evolutionary genetics improve experimental design data interpretation various vitro whole organism models review five molecular systems stress response update consensual cell cell signaling pathways hallmark early development organogenesis differentiation revisit principles teratology light recent advances high throughput screening big data techniques systems toxicology multiscale systems modeling plays integral role evolutionary approach cross species extrapolation phylogenetic analysis comparative bioinformatics valuable tools identifying validating molecular initiating events account adverse developmental outcomes humans discordance susceptibility test species humans ontogeny reflects differences evolutionary history phylogeny synthesis lead novel applications developmental toxicity risk assessment also pave way applying evo devo perspective study developmental origins health disease elsevier inc rights reserved
long lasting synaptic plasticity involves functional morphological changes processes molecularly linked achieve coordinated plasticity remains poorly understood cofilin common target multiple signaling pathways synapse required functional spine plasticity regulated unclear study investigate whether involvement cofilin plasticity developmentally regulated examining role cofilin hippocampal longterm depression ltd young weeks mature months mice show total protein level cofilin activation undergo significant changes brain matures although amount cofilin decreases significantly mature mice regulation protein phosphorylation becomes increasingly important consistent biochemical data show cofilin mediated actin reorganization essential ltd mature young mice contrast cofilin glua interactions nsf pick appear required young mature mice indicating ampar internalization common key mechanism ltd expression regardless developmental stages results establish temporal specificity cofilin ltd regulation suggest cofilin mediated actin reorganization may serve key mechanism underlying developmental regulation synaptic spine plasticity article part special issue entitled ionotropic glutamate receptors elsevier ltd rights reserved
advances sequencing technologies continue provide unprecedented opportunities characterize microbial communities example pacific biosciences single molecule real time smrt platform emerged unique approach harnessing dna polymerase activity sequence template molecules enabling long reads low costs aim simultaneously classify enumerate situ microbial populations developed quantitative smrt qsmrt approach involves addition exogenous standards quantify ribosomal amplicons derived environmental samples regions ssu rdna targeted quantified protistan community samples collected ross sea austral summer used three standards different length optimized conditions obtain accurate quantitative retrieval across range expected amplicon sizes necessary criterion analyzing taxonomically diverse rdna molecules natural environments ability concurrently identify quantify microorganisms natural environment makes qsmrt powerful rapid cost effective approach defining ecosystem diversity function elsevier rights reserved
podcasts digital files popular several distinct areas higher education explored multitude ways mainly support teaching learning processes study described focuses integration podcasts heredity evolution course biology geology degree program university minho portugal aimed introduce podcasts teaching learning context empirically study different dimensions podcasting evaluate students acceptance receptiveness pedagogical use technology five informative podcasts three feedback produced delivered students listened audio files considered episodes audible clear preference going episodes short moderate length containing summaries study guidelines syllabus contents students judged extremely valuable integration technology learning showed receptiveness podcasting courses curiously spite owning mobile devices students clearly favored use personal computers listen podcasts student acceptance openness podcasting encouraging pedagogical application teaching courses episodes produced often maintain characteristics identified best students study pedagogical approach moving student centered learning situation students podcasts producers international union biochemistry molecular biology
dihydrodipicolinate synthase dhdps main enzyme specific branch aspartate pathway leading lysine biosynthesis higher plants cloned characterized dhdps gene zizania latifolia griseb named zldhdps sequence analysis indicates contains orf interrupted two exons one intron encoding polypeptide amino acids lacking plastid transit peptide stop codon sequence zldhdps high identity known plant dhdps genbank southern blotting analysis indicates two copies latifolia dhdps zldhdps gene latifolia nuclear genome pcr analysis shows expression zldhdps tissue specific high level expression present fast growing tissue reproductive tissue regulatory sequence zldhdps contains box element may play role regulating expression zldhdps fusion construct zldhdps sequence reporter gene gus transiently expressed onion epidermal cells particle gun mediated bombardment suggesting zldhdps located cytoplasm different dhdps gene species functional complementary analysis showed zldhdps recover dhdps deleted mutant escherichia coli
recent reports indicated human cytomegalovirus hcmv associated human glioblastoma carcinogenesis established examples viral carcinogenesis viral dna one products detected tumor cells biopsies majority cases test whether hcmv associated human glioblastoma based criterion measured number viral dna molecules per cell frozen paraffin embedded tumor biopsies patients using real time quantitative pcr qpcr immunohistochemical fluorescence situ hybridization fish detect hcmv proteins genome performed cases using formalin fixed paraffin embedded glioblastoma tissues southern blotting using dna extracted four glioblastoma cell lines together immunoblotting using four cell lines five glioblastoma tissue samples also performed confirmed immunoblot bands using liquid chromatography tandem mass spectrometry assay result hcmv dna detected tumor cells glioblastoma cases qpcr detecting two different hcmv genes clear contrast samples patients hcmv infection southern blotting immunoblotting cell lines fish using paraffin sections negative however immunoblotting immunohistochemistry using tissue samples partly positive hcmv proteins detected proteomic analysis suggesting false positivity analyses qpcr analysis could detect copies hcmv dna mixed dna extracted hcmv negative cells conclude hcmv persistent least tumor cells developed human glioblastoma
spatial structure decisively influence way evolutionary processes unfold date several methods used study evolution spatial systems including population genetics quantitative genetics moment closure approximations individual based models extend study spatial evolutionary dynamics eco evolutionary models based reaction diffusion equations adaptive dynamics specifically derive expressions strength directional stabilizing disruptive selection apply continuous space metacommunities symmetrical dispersal patches directional selection quantitative trait yields way integrate local directional selection across space determine whether trait value increase decrease robustness prediction validated quantitative genetics stabilizing disruptive selection show spatial heterogeneity always contributes disruptive selection hence always promotes evolutionary branching expression directional selection numerically efficient hence lends simulation studies evolutionary community assembly illustrate application utility expressions purpose two examples evolution resource utilization finally outline domain applicability reaction diffusion equations modeling framework discuss limitations
ensuring future food security growing population climate change urban sprawl put pressure agricultural land require sustainable intensification current farming practices crop breeder means producing higher crop yields less resources due greater environmental stresses easy gains crop yield made mostly ground little progress made ground yet root system traits improve productivity resistance drought stress wheat pre breeders use soil coring core break counts phenotype root architecture traits data collected rooting density hundreds genotypes small increments depth measured densities large datasets highly variable even within genotype hence rigorous comprehensive statistical analysis complex field data would technically challenging traditionally attributes field data therefore discarded favor simple numerical summary descriptors retain much high variability exhibited raw data poses practical challenges although plant scientists established root traits drive resource capture crops traits randomly rather genetically determined difficult breed paper develop hierarchical nonlinear mixed modeling approach utilizes complete field data wheat genotypes fit bayesian paradigm idealized relative intensity function root distribution depth approach used determine heritability much variation field samples purely random mechanistically driven plant genetics based genotypic intensity functions overall heritability estimate bayesian confidence interval despite root count profiles statistically noisy approach led denoised profiles exhibited rigorously discernible phenotypic traits profile specific traits could representative genotype thus used quantitative tool associate phenotypic traits specific genotypes would allow breeders select whole root system distributions appropriate sustainable intensification inform policy mitigating crop yield risk food insecurity
sydney rock oysters saccostrea glomerata among important estuarine species eastern coast australia also basis major aquaculture industry industry largely relies sydney rock oysters selectively bred fast growth disease resistance selectively bred glomerata currently farmed estuaries also sustain wild populations sydney rock oysters providing opportunity interbreeding led concern gene flow farmed selectively bred oysters could alter genetic variability wild oyster populations use next generation genotype sequencing test genetic introgression wild farmed selectively bred line sydney rock oysters sites georges river nsw strong genetic partitioning identified wild selectively bred populations evidence gene flow form introgression even though selectively bred oysters farmed georges river since early contrary expectations also found significantly higher levels genetic diversity heterozygosity selectively bred population relative wild population relatively low level genetic diversity detected wild oysters may particularly relevant adaptive capacity species wild
mutants shewanella oneidensis adapted electrode respiring condition selected random transposon insertion mutant library obtain active current generating mutants identify relevant cellular components mutants selected presence electrode poised agcl reference electrode sole electron acceptor isolated agar plates transposon insertion sites isolated mutants identified inverse pcr coupled sequence analyses southern blotting using transposon probe also performed detect mutants grew abundantly electrode analyses revealed many isolated mutants transposons inserted genes relevant synthesis cell surface structures including pilus synthesis polysaccharide synthesis polysaccharide synthesis general secretion pathway microbial fuel cells mutants generated higher electrical outputs wild type others generated lower outputs results suggest cell surface structures large influence microbial current generation
paper describes modern enzymology japanese bioindustries invention takadiastase jokiti takamine revolutionized world industrial enzyme production fermentation new amylase glucan glucosidase luchuensis formerly designated awamori found kitahara rnase guanyloribonuclease discovered sato egami ando discovered aspergillus nuclease single stranded nucleate endonuclease aspergillopepsin tubingensis formerly designated saitoi activates trypsinogen trypsin shintani demonstrated asp aspergillopepsin binding site basic substrate trypsinogen new oligosaccharide moieties man glcnac man glcnac identified mannosidase tubingensis yeast mutant compatible producing man glcnac human compatible sugar chains glycoproteins constructed acid activation protyrosinase oryzae resolved hyper protein production system glucoamylase established submerged culture
article reviews research evolutionary mechanisms leading different transmission modes modes often genetic control host pathogen often conflict via trade offs transmission modes may vary among pathogen strains among host populations evolutionary changes transmission mode inferred experimental phylogenetic studies including changes transmission associated host shifts evolution unusually complex life cycles many parasites understanding forces determine evolution particular transmission modes presents fascinating medley problems lack good data often lack conceptual understanding appropriate methodologies best information comes studies focused vertical versus horizontal transmission dichotomy kinds transitions theoretical approaches combining epidemiology population genetics providing guidelines determining rapidly new transmission modes may evolve still need empirical investigation application particular cases obtaining knowledge matter urgency relation extant disease threats article part themed issue opening black box examining ecology evolution parasite transmission
objective monitoring septic shock induced immunosuppression proposed identify patients could benefit specific immunoadjuvant therapies among potential biomarkers monitor immunological status functional testing remains gold standard directly measures capacity cell population respond immune challenge investigated new approach intracellular staining flow cytometry measure tumor necrosis factor itnf produced vitro monocytes response lipopolysaccharide design setting subjects interventions observational study intensive care unit immunology laboratory university medical center sixteen septic shock patients eight control subjects included main results monocyte itnf determined flow cytometry whole blood completed according wash centrifuge procedure lipopolysaccharide challenge induced tremendous expression itnf statistically pronounced controls patients observed results expressed medians fluorescence intensity median iqr percentages positive cells itnf expression correlated monocyte hla expression patients controls conclusions preliminary results illustrate feasibility immune functional testing routine manner septic shock patients deserve widely assessed validated various intensive care unit conditions could major step characterize rapidly changing immune response overtime thus permit personalized medicine
infection freshwater chinese mitten crab eriocheir sinensis hepatopancreatic necrosis disease hpnd major problem crab cultivated chinese province jiangsu since explore etiology hpnd meta transcriptomic libraries hepatopancreata crabs without hpnd constructed comparison analyses showed statistically significant differences viral microsporidial communities hepatopancreata diseased healthy crabs bacteroidetes proteobacteria firmicutes dominant bacterial phyla hepatopancreata healthy crabs combined prevalence however decrease bacterial diversity striking shift microbial composition found hepatopancreata crabs infected hpnd tenericutes prevalent bacterial phylum diseased crabs whereas prevalence low healthy crabs contrast prevalence bacteroidetes significantly lower crabs hpnd crabs without hpnd also found prevalence actinobacteria higher crabs hpnd crabs without disease major bacterial family within tenericutes phylum crabs hpnd detected polymerase chain reaction determined mycoplasmataceae conclusion striking changes microbiota diseased healthy crabs specifically prevalence bacteria belonging tenericutes actinobacteria phyla increased whereas prevalence bacteria belonging bacteroidetes phylum decreased crabs hpnd clearly pointing association hpnd
phosphatidylethanolamine one abundant phospholipids whose major amounts formed phosphatidylserine decarboxylases provide comprehensive description different types psds different kingdoms life eukaryotes type psds mitochondrial enzymes whereas psds localized cellular compartments describe role mitochondrial psd proteins function enzymology biogenesis assembly mitochondria contribution phospholipid homeostasis much detail also discuss briefly cellular physiology enzymology psd article part special issue entitled lipids mitochondria edited guenther daum published elsevier
review presents opening story biogenesis functions basic groups human small noncoding rna microrna short interfering rna rna molecules inhibit gene expression translation rna interference found microrna short interfering rna circulate bioliquids serve biomarkers different human diseases conservative sequences tissue specificity resistance environment factors paper considers techniques study noncoding rna cloning bioinformatics analysis hybridization methods northern blotting pcr situ hybridization microarray analysis reporter analysis possible noncoding rna targeted therapy suggest delivery microrna anti microrna antagomirs microrna sponges target tissue virus molecules liposomes nanoparticles
diseases abnormalities heart interfere aquaculture atlantic salmon heart investigated source cell lines could used study cellular basis conditions atlantic salmon heart endothelial cell line ashe developed characterized growth properties endothelial cell characteristics responsiveness lysophosphatidic acid lpa ahse cells stained negative senescence associated galactosidase grew well fbs high cell density medium supplemented calf serum displayed many endothelial cell like characteristics including cobblestone morphology capillary like structures formation matrigel expression von willebrand factor endothelial cell related tight junction proteins claudin claudin ashe cells responded cardiovascular modulator lpa two contrasting ways lpa inhibited ability ashe cells heal wound stimulated proliferation especially evaluated colony formation low density cultures enhancement proliferation lpa parallels observed previously mammalian endothelial cell cultures exposed lpa whereas lpa slowing ashe cell migration contrasted lpa enhanced migration mammalian cells therefore cell line potentially useful model future comparative studies piscine mammalian cardiovascular cell biology studies diseases atlantic salmon aquaculture
although significant advances established molecular biology oral squamous cell carcinoma oscc innovative strategies still required understand detailed molecular mechanisms using bioinformatic approach aim explore potential mirna mrna pairs cancer related inflammatory response investigate potential roles signature mirna proteins signaling pathway firstly differentially expressed genes oscc selected underwent gene ontology identify genes engaged inflammatory response regulation validated mirnas retrieved mirnas complete complementarily targets visualized mirna mrna regulatory network protein protein interactions inflammatory regulatory genes analyzed interacting genes involved signaling pathway eight universal mirnas obtained inflammation regulation mirna showed significant influence controlling inflammatory response oscc therefore micronome deregulated genes inflammation identifies mirna mrna pairs high potential targeted diagnostic treatment applications oscc elsevier rights reserved
heritable predisposition important cause cancer children adolescents although large number cancer predisposition genes associated syndromes malignancies already described appears likely pediatric cancer patients heritable cancer predisposition syndromes yet recognized consensus meeting beginning convened experts human genetics pediatric hematology oncology review available data categorize large amount information develop recommendations regarding cancer predisposition syndrome suspected young oncology patient review summarizes current knowledge cancer predisposition syndromes pediatric oncology provides essential information clinical situations childhood cancer predisposition syndrome suspected
retinol alpha tocopherol biologically active compounds often monitored blood samples evident importance human metabolism study novel ultra performance liquid chromatographic uplc method used determination vitamins human serum compared conventional hplc particulate monolithic columns uplc sub two micron particle hybrid stationary phase used separation contrast five micron particle packed column monolithic column highly porous structure methanol flow rates min respectively used mobile phase isocratic elution compounds three methods detection performed absorption maxima retinol alpha tocopherol respectively analysis time sensitivity mobile phase consumption validation data cost critically compared different chromatographic systems although cost mobile phase consumption seem make uplc method choice use monolithic column resulted almost separation performance slightly shorter analysis time methods alternatives routine laboratory practice economical means analysis large numbers biological samples use traditional particulate column
solid gas biocatalysis nontraditional reaction system employs ability enzymes solid state catalyze reactions substrates gas phase manipulation reaction parameters temperature pressure solid gas system allows precise control thermodynamic activity water substrate creation controlled microenvironment enzyme making appropriate model enzymology studies owing advantages high stability dry enzymes cofactors easy fractionation gas mixtures solid gas biotechnology already found several industrial applications review key thermodynamic factors affecting properties enzymes including activity stability solid gas system examples promising enzymes microorganisms development improvement solid gas biocatalytic technologies organic synthesis biosensors green chemistry discussed
vitro manipulation human stem cells critical process regenerative medicine cellular therapies strategies methods maintain stem cells direct specific lineages ongoing challenges fields date number studies reported besides biochemical stimulation biophysical cues form surface patterning external stimulation also influence stem cell attachment proliferation differentiation used cell reprogramming maintenance pluripotency biochemical cues generally effective easy deliver biophysical cues many advantages scalability cost efficient longer lifetime easily defined however different protocols cell sources utilized variety studies led difficulties obtaining clear conclusions effects biophysical environment stem cells addition examination different types external stimulation time consuming limited available fabrication techniques resulting delay commercialization clinical applications review aim summarize important biophysical cues methods culture human stem cells including mesenchymal pluripotent stem cells facilitate adoption stem cell biology standard classical protocols using biochemical cues also discussed comparison believe combining biochemical biophysical stimulation greatest potential generate functionally mature cells scalable inexpensive rate diverse applications regenerative medicine cell therapy biotechnol bioeng wiley periodicals inc
silene latifolia dioecious plant heteromorphic sex chromosomes previous studies sex chromosome linked genes suggested gradual divergence linked linked genes proportion distance pseudoautosomal region however comparison yet made noncoding regions better characterize nonrecombining region chromosomes sequenced bacterial artificial chromosome clones containing sex chromosome linked paralogs slapx slapy including sequences respectively flanking genes synonymous nucleotide divergence slapx slapy indicated recombination stopped approximately million years ago sequence homology analysis revealed presence six long terminal repeat retrotransposon like elements using nucleotide divergence calculated left right long terminal repeat sequences insertion dates estimated million years ago implying elements detected inserted recombination stopped reciprocal sequence homology search facilitated identification four homologous noncoding dna regions chromosomes spanning chromosome derived chromosome derived sequences respectively investigated genomic southern blotting fluorescence situ hybridization showed noncoding dna flanking slapx homology many regions throughout genome regardless whether homologous chromosomes finding suggests noncoding dna regions rapidly lose counterparts introduction transposable elements indels insertion deletions recombination stopped
micrornas mirnas class non protein coding small rnas considering conservation many mirna genes different plant genomes identification mirnas non model organisms practicable instrumental addressing mirna guided gene regulation citrus important staple fruit tree publicly available expressed sequence tag est database citrus increasing however little known mirna citrus study known mirnas arabidopsis searched citrus est databases mirna precursors searched precursor sequences could form fold back structures similar arabidopsis ubiquitous expression citrus micrornas potential citrus mirnas could detected citrus leaf young shoot flower fruit root northern blotting showed differential expression different tissues based fact mirnas exhibit perfect nearly perfect complementarity target sequences total potential targets identified citrus mirnas majority targets transcription factors play important roles citrus development including leaf shoot root development additionally target genes appear play roles diverse physiological processes four target genes experimentally verified detection mirna mediated mrna cleavage poncirus trifoliate overall study identification characterization mirnas citrus initiate study citrus mirna regulation mechanisms help know important roles mirnas citrus
using chemical elements proxy stellar dna present full phylogenetic study stars solar neighbourhood entails applying clustering technique widely used molecular biology construct evolutionary tree three branches emerge interpreted stellar populations separate age kinematics thus attributed thin disc thick disc intermediate population probable distinct origin find six lone stars intermediate age could assigned population enough statistical significance combining ages stars position tree able quantify mean rate chemical enrichment populations thus show purely empirical way star formation rate thick disc much higher thin disc also able estimate relative contribution dynamical processes radial migration disc heating distribution chemical elements solar neighbourhood method offers alternative approach chemical tagging methods advantage visualizing behaviour chemical elements evolutionary trees offers new way search common ancestors reveal origin solar neighbourhood stars
significant improvements treatment understanding gestational trophoblastic neoplasia occurred last years diseases almost always curable refractory patients options salvage therapy recent improvements understanding epidemiology diagnosis cell biology resulted changes staging advances treatment options opportunities fertility preservation published elsevier inc
brown adipose tissue bat specialized heat production metabolism mice still matter debate aimed verify mice bat using male mice wild type leptin deficient mice cbi background strain three months age group euthanasia animals interscapular batweighed prepared analysis western blot rtqpcr comparison group group showed reduced thermogenic signaling markers gene expression beta adrenergic receptor beta ppargamma coactivator alpha pgcalpha uncoupling protein ucp group also showed impaired gene expression lipid utilization perilipin increased markers diminished carnitine palmitoyltransferase cpt cluster differentiation fatty acid binding protein fabp fatty acid synthase fas sterol regulatory element binding protein srebpc altered protein expression insulin signaling diminished pakt glut lastly group showed increased gene expression markers inflammation interleukin beta beta tumor necrosis factor alpha tnfalpha monocyte chemotactic protein mcp conclusion mice decreased thermogenic markers associated reduced gene expression related fatty acid synthesis mobilization oxidation also alterations insulin signaling protein gene expressions inflammation findings suggest lack substrate thermogenesis local inflammation negatively regulated thermogenic signaling mice elsevier gmbh rights reserved
small rnas srnas play fundamental roles modifying transcriptomes proteomes organisms srnas classified according origin way faction classes micrornas transacting sirnas heterochromatin sirnas piwi interacting rnas natural antisense sirnas although micrornas conserved studied class expression pattern srna indicative biological function northern blotting one widely used methods identify validate study expression profile srnas quantitative relatively inexpensive technique readily available laboratories chapter describes protocol srna northern blot analysis includes rna extraction polyacrylamide gel electrophoresis hybridisation detection srna using oligonucleotide probes
argue standard accounts fitness finite populations inaccurate conceptually misleading show usual population genetics conceptualization fitness ratio amounts type selection selection works well finite infinite populations fitness becomes random variable selection conceptualized difference distribution variable genetic drift conceptualized realized variation variable derive exact equations novel approximations mean valiance relative fitness approximations selection gradients finite populations expression variance effective population size presence selection
zymoseptoria tritici causal agent septoria tritici blotch serious foliar disease wheat necrotrophic pathogen undergoes long latent period emergence insensitivity fungicides pesticide reduction policies mean pressing need understand septoria control greater varietal resistance stb stb common qualitative resistance genes modern wheat cultivars determine specific resistance avirulent fungal genotypes following gene gene relationship study investigated compatible incompatible interactions wheat tritici using eight combinations cultivars isolates aim identifying molecular responses could used markers disease resistance early symptomless phase colonization accumulation tampk estimated using western blotting expression genes implicated gene gene interactions plants wide range pathogens measured qrt pcr presymptomatic stages infection production tampk expression genes responded inoculation tritici varied considerably experimental replicates however significant difference compatible incompatible interactions responses tested results demonstrate molecular biology gene gene interaction wheat zymoseptoria unlike many plant diseases indicate environmental conditions may strongly influence early responses wheat infection tritici emphasize importance including compatible incompatible interactions investigating biology complex pathosystem
cyclic processes particular cell cycle great importance cell biology continued improvement cell population analysis methods like fluorescence microscopy flow cytometry cytof single cell omits made mathematical methods based ergodic principles powerful tool studying processes paper establish relationship cell cycle analysis ergodic principles age structured population models end describe progression single cell cell cycle stochastic differential equation one dimensional manifold high dimensional dataspace cell cycle markers given assumption cell population steady state derive transformation rules transform number density manifold steady state number density age structured population models theory facilitates study cell cycle dependent processes including local molecular events cell death cell division high dimensional snapshot data ergodic analysis general applied every process exhibits steady state distribution combining ergodic analysis age structured population models furthermore provide theoretic basis extensions ergodic principles distribution deviate steady state
atp binding cassette abc superfamily active transporters involves large number functionally diverse transmembrane proteins transport variety substrates including amino acids lipids inorganic ions peptides saccharides metals drugs proteins abc transporters move variety substrates cell also also involved intracellular compartmental transport energy derived hydrolysis atp used transport substrate across membrane concentration gradient typical abc transporter consists two transmembrane domains two nucleotide binding domains defects transporters cause genetic diseases cystic fibrosis stargardt disease adrenoleukodystrophy tangier disease etc mutations three genes affect lipid levels expressively mutations abca cause severe hdl deficiency syndromes called tangier disease familial high density lipoprotein deficiency characterized severe deficiency absence high density lipoprotein plasma two abcg transporters abcg abcg mutations cause sitosterolemia identified affected individuals absorb retain plant sterols well shellfish sterols
biological systems formation molecular complexes currency cellular processes traditionally functional experimentation targeted single molecular players order understand effects cell animal phenotype last years experiencing rapid progress development ground breaking molecular biology tools affect metabolic structural morphological epi genetic instructions cells chemical optical optogenetic mechanical inputs precise dissection cellular processes essential better understanding biological systems also allow better diagnose fix common dysfunctions present several emerging innovative techniques providing reader elegant examples tools implemented cells cases organisms unravel molecular processes minute detail also discuss advantages disadvantages particular focus translation multicellular organisms vivo spatiotemporal regulation envision developments tools help solve processes life give rise novel clinical industrial applications
background anti proliferative gene pheochromocytoma cell btg cell translocation gene one early growth response genes belongs btg tob protein family study aimed assess effects recombinant human hepatopoietin hpo partial hepatectomy rapidly induced expression immediate early genes investigate expression btg mrna hepatocellular carcinoma hcc different stages progression methods rat model partial hepatectomy established investigated gene expression within hour partial hepatectomy representational difference analysis primary cultured hepatocyte system expression levels btg liver tissues rat model assessed pcr northern blotting meanwhile expression btg mrna tissue microarray hcc determined situ hybridization results btg gene rapidly induced partial hepatectomy expression peaked within hours operation hpo rapidly induced expression genes fos lrf primary cultured rat hepatocytes might one molecular mechanisms hpo stimulates hepatocyte proliferation positive btg mrna expression detected hcc samples normal liver tissue samples obtained region around hcc tissues btg mrna located mainly cytoplasm hcc cells expression related degree differentiation conclusions recombinant human hpo partial hepatectomy rapidly induce expression btg gene btg mrna highly expressed hcc cells expression related degree cell differentiation abnormal expression btg closely related genesis development hcc btg may play important role processes hepatobilimy pancreat dis int
ability enzymes operate organic solvent widely accepted basis extensive research enzymology challenge select solvent media allows modulation enzyme activity rational selection solvent necessary understand effect organic solvent molecules enzyme structure enzymatic reaction molecular level gain insight combined experimental kinetics studies full atomic molecular dynamics simulations found correlation activity candida antarctica lipase calb esterification reaction butyric acid ethanol fixed water activity binding solvent substrate molecules active site region calb investigated influence four organic solvents hexane hex methyl tertiary butyl ether mtbe acetonitrile acn tertiary butanol tbu catalytic activity calb esterification reaction solvents chosen basis different polarity functional groups study shows organic solvents alter overall conformation calb rather solvent effects performance enzyme may ascribed binding solvent molecules enzyme active site region solvation energy substrate molecules different solvents polar solvent molecules interact strongly calb compete substrate bind active site region resulting inhibitory effect also confirmed binding free energies solvent substrate molecules estimated simulations consequently catalytic activity calb decreases polar solvents effect significant calb orders magnitude active nonpolar solvents hex mtbe polar solvents acn tbu tbu molecules show exceptional behavior solvent molecule forms extensive hydrogen bond network within calb active site region suggesting solvent molecules rich hydrogen bond acceptors donors poor solvents used lipase catalyzed esterification reactions
clavibacter michiganensis ssp michiganensis cmm causes substantial economic losses tomato production worldwide disease symptoms observed plants infected systemically cmm wilting canker stem whereas blister like spots develop locally infected leaves wide repertoire serine proteases cell wall degrading enzymes implicated development wilt canker symptoms however virulence factors involved formation blister like spots play important role cmm secondary spread tomato nurseries largely unknown demonstrate cmm virulence factors play different roles blister formation relative wilting inoculation green fluorescent protein gfp labelled cmm indicates penetration occurs mainly trichomes spray inoculated tomato leaves wild type cmm cmm lacking plasmids pcm pcm strains form blister like spots leaves whereas cmm lacking chp toma pathogenicity island non pathogenic indicating plasmid borne genes crucial role wilting required blister formation conversely mutations chromosomal genes encoding serine proteases chpc sbta cell wall degrading enzymes pgaa endx transcriptional regulator vatr putative perforin perf putative sortase srta significantly affect disease incidence severity blister formation transcript levels genes measured quantitative reverse transcription polymerase chain reaction showed blister formation expressed early inoculation whereas wilting expressed expressed low levels plant gene expression studies suggest chpc involved suppression host defence
single nucleotide polymorphisms snps dna result phenotypes biochemical basis may clear due lack protein structures growing number modeling simulation software available internet students participate determining small changes genetic information impact cellular protein structure function developed modular series activities engage lab lecture students examining basis common phenotypes activities range basic phenotype testing observation dna sequencing simulation protein structure dynamics provide example study bitterness receptor tasr ptc tasting however activities applicable snps genomic variants direct connection observable phenotype activities modular mixed meet student capabilities infrastructure availability complete sequence activities demonstrate direct connection gene structure protein structure organism function international union biochemistry molecular biology
order study impact nucleus accumbens nac expression survival cancer cell molecular mechanism involved nac observed regulated human cancer play important role progression recurrence ovarian cancer study investigated regulatory role nac glycolysis effect nac mediated glycolysis cancer cell survival cell biology molecular biology pharmacology approaches methods used study demonstrated nac critical regulator cancer cell survival hypoxic condition silencing nac leads increase cleaved caspase cleaved parp decline cell viability colony formation cells subjected hypoxia nac novel regulator glycolysis depletion nac leads increase concentration glucose culture medium decrease level intercellular lactate nac enhances stability protein level hif alpha hypoxia nac promotes cancer cell survival glycolysis strengthening stability hif alpha
traceability foods become important problem respect food quality typicalness foods cheeses milk origin identified consumer sold different prices various product names recently caused problem adulteration aim study determine amount origin milk used cheese production using real time pcr used identification animal species dairy products study different cheeses offered sale turkey brands various sources cow sheep goat studied end study samples determined produced cow milk remaining mixture goat sheep milk found one sample sheep cheese produced sheep milk goat cheese samples cheese produced sheep milk origin identified cow milk linear relationship could determined chemical composition fatty acids ratios amount origin cheeses elsevier ltd rights reserved
degradation rna intermediate message genes corresponding proteins important rapid attenuation gene expression maintenance cellular homeostasis process controlled ribonucleases different target specificities bacterial pathogen helicobacter pylori exo endoribonuclease rnase essential growth explore role rnase pylori identified putative targets global scale using next generation rna sequencing found strong depletion rnase led massive increase steady state levels non rrnas mrnas rnas antisense open reading frames affected increased fold non coding rnas expressed intergenic regions much less affected rnase depletion northern blotting selected messenger non coding rnas validated results globally data suggest rnase pylori major rnase involved degradation cellular rnas
studied metallothionein nit response cadmium exposed worms eisenia fetida protein level dot immunobinding assay dia polyclonal antibody raised immunogenic part protein expression level northern blotting using specific probe nit appeared two close isoforms dia results clearly demonstrated significant differences level whole worm heat treated supernatants fetida exposed concentrations low dry soil compared controls northern blotting analysis performed whole bodies worms revealed single exposure dry soil day resulted production nit mrna response maintained exposure least month clear differences nit gene expression also observed worms exposed different concentrations dry soil immunocytochemistry demonstrated nit located chloragogenous tissue surrounding gut metals known accumulated work revealed fetida nit sensitive relevant biomarker exposure especially considering gene expression response experiments prove usefulness natural metal contaminated soil toxicity assessments elsevier inc rights reserved
trifoliate orange poncirus trifoliata raf extremely cold hardy fully acclimated knowledge relevant molecular events underlying acclimation still limited far study forward degrees degrees reverse degrees degrees suppression subtractive hybridization ssh libraries constructed order identify genes involved cold acclimation trifoliate orange reverse northern blotting analysis sequencing total non redundant differentially expressed sequence tags ests obtained forward reverse libraries respectively blastgo analysis revealed ests forward library reverse library displayed significant sequence homology genes known putative functions categorized various functional groups including catalytic activity binding protein structural molecule enzyme regulator molecular transducer electron carrier transport activity transcription regulation expression analysis selected ests reverse transcriptase polymerase chain reaction consistent results differential screening addition time course expression patterns genes confirmed responsive low temperature treatment among genes known functions many related maintenance cell wall integrity adjustment osmotic potential maintenance reactive oxygen species homeostasis implying physiological processes might paramount significance rendering protective mechanisms low temperature stress data presented gain insight molecular changes underlying cold acclimation trifoliate orange results reference unraveling candidate genes hold great potential genetic engineering effort create novel germplasms enhanced cold stress tolerance elsevier rights reserved
polyketides structurally functionally diverse family bioactive natural products found widespread application pharmaceuticals agrochemicals veterinary medicines bacteria complex polyketides biosynthesized giant multifunctional megaenzymes termed modular polyketide synthases pkss construct products highly coordinated assembly line like fashion pool simple precursor substrates multifaceted enzymology pkss fascinating target study also presents considerable opportunities reengineering systems affording access functionally optimized unnatural natural products provide introductory primer modular polyketide synthase structure function highlight recent advances characterization exploitation systems
introduction given physiological role placental growth hormone pgh intrauterine development growth genetic variation coding growth hormone gene may modulate developmental programming adult stature two major variants described worldwide determined single polymorphism sought study whether variants may contribute adult anthropometric measurements methods genotyping snp rflp testing genetic association adult height body mass index bmi linear regression analysis combining results three individual study samples meta analysis study samples hypest estonia men women cadcz czech ufa bashkortostan meta analysis results meta analysis across hypest cadcz ufa samples resulted significant association height recessive model homozygote effect beta additive model allele effect beta among men association allele taller stature remained significant multiple testing correction additive effect beta association detected bmi notably strong snps significantly associated height mapped near three independent meta analyses gwa studies conclusions first study demonstrating link placental gene variant programming growth potential adulthood detected association pgh encoding adult height promotes research role placental genes prenatal programming human metabolism authors published elsevier ltd rights reserved
investigated changes expression profiles partially resistant apricot prunus armeniaca cultivar goldrich following inoculation plum pox virus ppv using cdna amplification fragment length polymorphism aflp altered expression patterns detected twenty one differentially expressed cdna homologies genes databases coding proteins involved metabolism signal transduction defense stress intra intercellular connections seven modified expressed patterns investigated semi quantitative pcr northern blotting expression patterns five genes confirmed partially resistant armeniaca goldrich assessed susceptible genotype one cdnas coding putative class iii chitinase appeared repressed infected plants partially resistant genotype expressed susceptible one could related partially resistant phenotype contrary expression patterns genes coding transketolase kinesin like ankyrin like protein clearly linked susceptible interaction candidate genes could play role either compatible interaction leading virus invasion quantitative resistance apricot ppv elsevier rights reserved
present work evaluates microbiological quality raw salad vegetables rsv consumed dhanbad city india total samples different raw salad vegetables local market examined overall microbial quality terms aerobic mesophilic psychrotrophic counts yeast mould total coliform levels coli listeria monocytogenes salmonella detected real time polymerase chain reaction qpcr subsequent isolation results showed samples found positive total coliform however coli detected total samples pathogenic microorganisms coli monocytogenes salmonella spp detected respectively total samples however pathogens detected cabbage samples exiguobacterium strain ism detected spinach sample studying bacterial contamination reported first time surface rsv rrna gene sequencing showed less similarity sequences available public domain
theileria spp anaplasma spp important tick borne pathogens tbp impact health humans animals tropical subtropical areas theileria anaplasma infections common sheep goats following alignment relevant dna sequences two primer sets designed specifically target theileria spp rrna anaplasma spp rrna gene sequences genomic dna two genera serially diluted tenfold testing sensitivities detection primer sets specificities primer sets confirmed dna anaplasma theileria positive controls related hematoparasites negative controls ddho used templates fifty field samples also used evaluate utility single pcr duplex pcr assays detection results compared pcr methods previously published optimized duplex pcr assay established two primer sets based relevant genes two tbps assay generated products theileria spp anaplasma spp detection limit assay per cross reaction dna hematoparasites results showed newly developed duplex pcr assay efficiency detection similar published pcr methods study duplex pcr assay developed simultaneously identify theileria spp anaplasma spp sheep goats duplex pcr potentially valuable assay epidemiological studies tbp detect cases mixed infections pathogens elsevier inc rights reserved
aberrant expression eph receptors ligands ephrins reported large variety human cancers including epithelial cancers colon ovary due recently reported decrease loss ephbs expression colorectal carcinomas abundance cpg sites promoters analyzed promoter methylation status three members ephb family ephb ephb ephb series colon cancer cell lines well four ovarian cancer cell lines ovarian tumor samples promoters three receptor genes unmethylated vast majority samples assessed methylation specific polymerase chain reaction msp results confirmed direct bisulphite sequencing furthermore pcr analyzes northern blotting ephb showed small variation rna expression across ovarian cancer cell lines clinical samples conclude promoter hypermethylation ephb ephb ephb common event colon ovarian cancers therefore plays major role tumors
drought considered one major constraints plant growth productivity worldwide plants respond drought different mechanisms including physiological biochemical gene expression modulation studying mechanisms provide better understanding drought response mechanisms help breeders developing new cultivars study growth biochemical molecular responses four wheat triticum durum desf landraces drought stress mannitol investigated seedling stage reverse transcription polymerase chain reaction used assess gene expression level drought stress responsive gene dhn germination percentage shoot length root length root number durum landraces decreased significantly drought stress however drought stress caused increase proline content lipid peroxidation level dhn transcript level according studied traits karak landrace showed long shoots relative control longest roots relative control highest proline content relative control results indicate landraces studied karak may selected tolerant wheat landrace may help wheat breeding programs adaptation drought prone environments
brinjal little leaf bll widespread disease phytoplasma etiology india induces severe economic losses surveys conducted eight brinjalgrowing states india july september eighteen bll samples showing little leaf phyllody witches broom symptoms collected phytoplasma identification presence phytoplasmas confirmed eighteen bll samples using polymerase chain reaction phytoplasma specific primer pairs rfn pair wise sequence comparison phylogenetic relationship rrna gene sequences bll phytoplasma strains confirmed sixteen eighteen bll strains belonged clover proliferation phytoplasma srvi group two bll strains gkp gkp gorakhpur uttar pradesh classified srii group virtual rflp analysis rdna sequences allowed finer classification bll strains srii srvi subgroups bll phytoplasma strains belonging srvi subgroup found widespread phytoplasma strains associated bll disease india srvi subgroup phytoplasma association two symptomatic weed species viz cannabis sativa subsp sativa noida uttar pradesh portulaca oleracea iari fields new delhi also confirmed nested pcr assays similar set phytoplasma specific primers pairwise rdna sequence comparison phylogeny virtual rflp analysis five identified leafhopper species bll infected fields noida uttar pradesh delhi hishimonas phycitis identified carrier natural vector srvi subgroup phytoplasmas nested pcr assays sequence comparison phylogeny virtual rflp analysis transmission assays
heterocyclic aromatic amines hca formed upon frying poultry fish meat shown induce tumours rodent bioassays investigated transforming activity hca vitro assay using mouse fibroblast cell line external metabolic activation system rat liver homogenate required order observe hca induced cytotoxic effects cell transforming activity trp trp shown among potent transforming hca detected food metabolic activation hca shown proceed via hydroxylation exocyclic amino group therefore tested hydroxyamino methyl phenylimidazo pyridine phip activated metabolite anino methyl phenylimidazo pyridine phip proved one powerful compounds transforming activity observable concentration low since amino methyl phenylimidazo pyridine phip abundant hca formed fried grilled food hydroxylation appears predominant pathway human metabolism data support hypothesis hca involved aetiology human cancer elsevier science ireland ltd rights reserved
chronic lymphocytic leukaemia cll uncommon chinese population biology genetics treatment outcome chinese patients comprehensively investigated study studied clinicopathological features outcome chinese patients newly diagnosed cll hong kong singapore median age diagnosis years majority patients presented early stage disease binet stage del frequent abnormality detected fluorescence situ hybridization fish analysis del gene mutations detected patients respectively myd mutations found higher frequency expected cll unmutated variable region immunoglobulin heavy chain genes ighv occurred cases associated advanced stage disease adverse fish abnormalities median follow months median overall survival months presence del mutations associated significantly shorter time first treatment inferior unmutated ighv also associated significantly shorter time treatment among patients required treatment median progression free survival pfs months respectively presence del associated significantly inferior pfs summary chinese cll patients similar genetic aberrations diagnosis compared western populations fish abnormalities major factors affecting outcome
background immunoprecipitation assay valuable molecular biology tool applied across breadth fields standard assay couples immunoblotting procedure severely limited easily scaled high throughput analysis results describe characterize new methodology fast reliable evaluation immunoprecipitation reaction flip fluorescence relies expression target protein chromophore tagged protein couples measurement fluorescent signal coating agarose beads show flip displays similar sensitivity standard procedure amenable high throughput analysis applied flip screening mouse monoclonal antibodies unknown behavior procedures parallel analysis considered antibodies using flip western shows good correlation two procedures also show application flip using unpurified antibodies hybridoma supernatant developed publicly available tool easy analysis quantification flip signals conclusions altogether characterizations new methodology show flip appealing reliable tool application high throughput
previously characterized gene encoding unique nuclease ldnuc sudanese isolate human pathogen leishmania donovani parasite secretory enzyme involved salvage host derived purines constitutively expressed developmental forms parasite currently assessed whether ldnuc like nuclease conserved among geographically disparate isolates donovani whether enzyme produced intracellular amastigotes human infections using pcr southern blotting showed ldnuc gene homologs present viscerotropic leishmania tested donovani isolates sudan ethiopia india well infantum results situ enzyme activity gel analyses showed parasite isolates also expressed released secreted ldnuc like nuclease activity western blots anti ldnuc sudan peptide specific antibody reacted single similar kda protein viscerotropic leishmania isolates similar kda nuclease secreted isolates specifically immunoprecipitated anti ldnuc antibody situ gel analyses showed immunoprecipitates ldnuc like nuclease activity moreover sera acute visceral leishmaniasis patients india sudan brazil immunoprecipitated ldnuc expressed nuclease demonstrating patients possessed antibodies parasite secretory enzyme cumulatively results showed ldnuc homologs functionally conserved among geographically disparate visceral leishmania spp amastigotes parasites must produce nuclease enzyme course human disease
objective study reveal molecular mechanism involved carbapenem resistance virulence klebsiella pneumoniae clinical isolate virulence strain determined vitro vivo methods novo whole genome sequencing technology molecular biology methods used analyze genomic features associated carbapenem resistance virulence pneumoniae strain highly resistant carbapenems belonged exhibited hypermucoviscous unique aerobactin kfu rmpa positive phenotype carbapenemase gene strain bla ndm located incx self transmissible plasmid close relation pndm mgr india genetic context blandm strain closely related incx plasmids various enterobacteriaceae species china combination multiple virulence genes may work together confer relative higher virulence pneumoniae significantly increased resistance serum killing mice mortality found virulent new delhi metallo beta lactamase ndm producing pneumoniae strain compared ndm producing pneumoniae strain study provides basic information phenotypic genomic features pneumoniae strain displaying carbapenem resistance relatively high level virulence findings concerning potential ndm like genes disseminate among virulent pneumoniae isolates
arbuscular mycorrhizal fungi amf occur majority terrestrial aquatic habitats worldwide important functioning individual plants entire ecosystems review trends research species species recognition phylogenetic relationships autecology community level amf diversity patterns aim identify ways improving complementarity approaches research many aspects amf diversity flourished parallel increasing availability molecular biology techniques however despite shared goal understanding amf biodiversity species community level perspectives morphological molecular approaches underpin currently limited capacity information exchange indicate critical research gaps amf species community characterisation outline important research directions propose steps could link research using different methods targeting different aspects diversity order maximise understanding amf elsevier ltd british mycological society rights reserved
exoribonuclease polynucleotide phosphorylase pnpase encoded pnp major player bacterial rna decay escherichia coli pnpase expression post transcriptionally regulated level mrna stability primary transcript efficiently processed endonuclease rnase iii specific site processed pnp mrna rapidly degraded pnpase dependent manner investigating pnpase autoregulation mechanism found cross linking experiments ribosomal protein crude extracts binds pnp mrna leader region assayed potential role protein pnp gene regulation modulating expression depletion overexpression found depletion led sharp decrease amount pnp tested mrnas detected northern blotting whereas overexpression caused strong stabilization pnp transcripts surprisingly mrna stabilization depended pnpase observed pnp deletion strain pnpase dependent stabilization however detected chemical decay assay bulk mrna overall data suggest pnpase exonucleolytic activity may modulated translation potential target mrnas upon ribosomal protein overexpression pnpase protects degradation set full length mrnas thus appears single mrna species may differentially targeted either decay pnpase dependent stabilization thus preventing depletion conditions fast turnover
somatic mutations within antibody variable domains critical immense capacity immune repertoire via deep mutational scan dissect mutations positions variable domains high affinity anti vegf antibody impact antigen binding function resulting mutational landscape demonstrates large portions antibody variable domain positions open mutation beneficial mutations found throughout variable domains determine role one antigen distal light chain position demonstrating mutation site optimizes antigen affinity thermostability modulating interdomain conformational dynamics antigen binding fragment furthermore analyzing large number human antibody sequences structures demonstrate somatic mutations occur frequently position corresponding domain conformations observed therefore modulation interdomain dynamics represents important mechanism antibody maturation vivo
present study aimed detect early changes concentration matrix metalloproteinase mmp matrix metalloproteinase mmp tissue inhibitor metalloproteinase timp rat model brain injury combined traumatic heterotopic ossification total male sprague dawley rats used establish experimental control groups anatomy sample collection conducted postoperative days hematoxylin eosin immunohistochemical staining performed local tissues mmp mmp timp levels gene expression level measured elisa reverse transcription quantitative polymerase chain reaction radiological investigation rat lower limbs conducted weeks following modeling observe occurrence incidence rats experimental group higher compared control group serum mmp levels experimental group notably higher postoperative days compared control group mmp gene expression experimental group higher postoperative days compared control group timp gene expression levels markedly higher compared control group time point thus increase inflammatory response closely associated brain injury addition increase number inflammatory cells incidence pathological elevation mmp altered dynamic equilibrium mmp timp contributed degradation remodeling calcification extracellular matrix resulting induction osteoblast precursor cells mmp predictive marker
presence anti hla antibodies serum patient result immune response produced immunizing event transfusion pregnancy graft antibodies cytotoxic activating complement pathway via may cause organ rejection transplant male patients awaiting kidney transplantation seropositive anti hla antibodies immunizing antecedent event antibodies qualified natural antibodies work assess cytotoxicity natural anti hla antibodies patients followed immunology laboratory blood transfusion service hemovigilance stsh part kidney transplant patients methods evaluated cytotoxicity hla antibodies detected male moroccan patients without immunization history using screen one lambda reagent luminex results non immunized men positive hla antibodies screening antibodies cytotoxic conclusion study showed positivity rate natural hla antibody low literature appears natural antibodies cytotoxic involvement renal transplant remains determined association societe nephrologie published elsevier masson sas rights reserved
gastrointestinal microbiota gut interacts metabolically immnunologically host tissue contact zone mucus layer understanding detail interactions especially dynamics crucial identify metabolically active subset microbiome became possible development stable isotope probing techniques sparsely applied microbiome research applied vivo stable isotope approach using labeled diet subsequent identification metabolically active bacterial species four week old male sprague dawley rats randomly assigned chow diet high fat diet hfd weeks three animals group sacrificed baseline characterization anthropometric metabolic obesity remaining animals exposed either labeled unlabeled experimental diet three rats cohort hfd sacrificed remaining three animals cohort received unlabeled diet sacrificed colon harvested divided three equal sections proximal medial distal mucus layer specimen sampled scraping identified active subset hfd model obesity comparison lean controls rats using metaproteomics addition samples investigated rrna amplicon gene sequencing active microbiome hfd group showed increase bacterial taxa verrucomicrobia desulfovibrionaceae contrast significant changes alpha diversity time localization dependent effects beta diversity clearly observed terms enzymatic functions hfd group showed strong affected metabolic pathways energy production carbohydrate metabolism vivo isotope labeling combined metaproteomics provides valuable method distinguish active non active bacterial phylogenetic groups relevant microbiota host interaction morbid obesity analysis may provide potentially new strategies targeted pre probiotic treatments
objectives exposure based cognitive behavioural therapy ecbt effective treatment anxiety disorders response varies individuals gene expression integrates genetic environmental influences analysed effect gene expression genetic markers separately together treatment response methods adult participants diagnosed panic disorder specific phobia underwent ecbt part standard care percentage decrease clinical global impression severity rating assessed across treatment baseline month follow associations treatment response assessed using expression data probes expression profiles clustered data literature driven manner total genetic variants used predict treatment response alone combined polygenic risk scores genotype expression data combined expression quantitative trait loci eqtl analyses results expression levels associated either treatment phenotype analysis total eqtls identified interactions genetic variants treatment response affect expression levels significantly genetic variants significantly predict treatment response alone polygenic risk scores conclusions assessed gene expression alone alongside genetic variants associations treatment outcome identified future studies require larger sample sizes discover associations
genetic changes responsible evolutionary transitions generalist specialist phenotypes poorly understood examine genetic basis craniofacial traits enabling novel trophic specialization sympatric radiation cyprinodon pupfishes endemic san salvador island bahamas recent radiation consists generalist species two novel specialists small jawed snail eater large jawed scale eater genotyped million single nucleotide polymorphisms snps whole genome resequencing individuals three species nine populations integrated genome wide divergence scans association mapping identify divergent regions containing putatively causal snps affecting jaw size rapidly diversifying trait radiation mere fixed variants accompanied extreme ecological divergence generalist scale eater species identified regions containing variants fixed specialists significantly associated variation jaw size contained genes annotated skeletal system effects novel candidate genes never previously associated craniofacial phenotypes six regions showed robust signs hard selective sweeps accounting demographic history data consistent predictions based quantitative genetic models adaptation suggesting effect sizes regions influencing jaw phenotypes positively correlated distance fitness peaks complex adaptive landscape
introduction recently determining mycn status neuroblastoma using quantitative pcr pcr fish instead southern blotting recommended order assess implications gene dosage mycn mycn status evaluated using pcr dna extracted small areas specimens obtained using laser capture microdissection lcm materials methods mycn gene dosages mycn nagk determined primary block samples well microdissected tissues samples using pcr cases mycn gene status evaluated using fish results nine block samples amplification mycn based showed remarkable increase mycn gene dosage using pcr twelve block samples amplification mycn based showed slight increase mycn gene dosage mycn nagk cases advanced stage among cases case several lcm areas high copy number mycn several lcm areas showed increase mycn gene another case showed slight increase mycn gene dosage mycn nagk lcm areas addition large number cells mycn gain found using fish block sample cases cases although lcm areas showed increased gene dosage mycn small number cells mycn amplification found using fish found block sample conclusion slight increase gene dosage mycn detected pcr may indicate tissue contains small number cells mycn amplification large number cells mycn gain associated aggressive progression
somatic mutations pikca cause many overgrowth syndromes recently coined pikca related overgrowth spectrum present seven molecularly confirmed patients pikca related overgrowth spectrum including patients congenital lipomatous overgrowth vascular malformations epidermal nevi scoliosis skeletal spinal syndrome klippel trenaunay syndrome lymphatic malformation two atypical phenotypes classified existing disease categories literature pikca related overgrowth spectrum suggests pikca cysarg glulys glulys hisarg hisleu identified approximately patients without brain overgrowth therefore droplet digital polymerase chain reaction targeting mutation hot spots could used first tier genetic test patients pikca related overgrowth spectrum signs overgrowth central nervous system wiley periodicals inc
objectives autoimmune pancreatitis aip representative igg related inflammatory disease unknown etiology clarify mechanisms carcinogenesis resulting aip focused methylation abnormalities kras mutations aip methods six tumor suppressor genes nptx cyclin foxe tfpi ppenk exhibited hypermethylation pancreatic carcinoma selected quantitative sybr green methylation specific polymerase chain reaction aip specimens pancreatic adenocarcinoma cases without history aip containing carcinoma areas cas noncarcinoma areas ncas normal pancreas samples kras mutation codons also investigated using direct sequencing results hypermethylation events identified nptx cyclin foxe tfpi ppenk cases respectively candidate genes aip nca however tfpi methylation ratio significantly higher aip nca direct sequencing results kras showed single point mutations aip conclusions first studies characterizing methylation abnormalities aip aip inflammatory condition may related carcinogenesis study elucidate methylation abnormalities associated carcinogenesis aip
purpose impact antimicrobial stewardship initiative time first antibiotic dose clinical outcomes bacteremic patients evaluated methods single center retrospective study conducted adult inpatients received antibiotics implementation rapid administration antimicrobials infectious diseases specialist raids protocol patients admitted inpatient service june october pre raids protocol december february post raids protocol eligible inclusion age years older infection occurred two days hospital admission blood culture growing organism common skin contaminants coagulase negative staphylococci bacillus species primary outcome time first antibiotic dose tfad defined time elapsed positive blood culture result administration first empirical antimicrobial dose results total bacteremic patients included analysis implementation raids protocol led significantly faster antibiotic order entry verification administration empirical antibiotics patients bacteremia median tfad approximately hours faster post raids group pre raids group min versus min patients post raids group significant reduction infection related mortality though cause day mortality similar conclusion early notification infectious diseases pharmacist positive blood cultures using raids protocol led increased appropriateness empirical drug selection dramatic reduction administration antibiotics associated decreased infection related mortality
aims immunoglobulin superfamily igsf proteins play critical role development nervous system new member igsf gene family cloned rat brain subsequently identified rat homolog drosophila kirre new molecule named rat kirre rkirre aimed reveal developmental expression rkirre mrna protein levels central nervous system deduced amino acid sequence rkirre showed putative pdz binding motif terminus provided rationale analyzing localization rkirre post synaptic density protein psd cultured rat cortical neurons main methods cdna library screening used isolation cdna northern blotting western blotting used reveal levels rkirre expression situ hybridization immuno fluorescent staining used determine localization rkirre key findings rkirre gene found highly expressed cerebrum hippocampus cerebellum brain stem spinal cord adult rats parallel protein level rkirre also increased developing cerebral cortex cultured rat cortical neurons amount rkirre significantly increased neuronal differentiation immuno cytofluorescent staining indicated rkirre present along neurites cortical neurons localized psd significance results suggested rkirre might play essential role neuronal differentiation development central nervous system elsevier inc rights reserved
patients end stage renal disease prematurely aged cell systems tested whether cell aging parameters associated risk infections renal transplantation rtx studied patients year peripheral cells analyzed rtx frequency recent thymic emigrants relative telomere length differentiation status parameters related occurrence opportunistic serious infections overall patients developed infection group developed opportunistic infection developed serious infection cell aging parameters assessed rtx associated infection risk memory cells showed decrease within first groups memory cells increased within infection group number memory cells increased groups reached baseline levels infection group infection group null cell percentage increased tending higher baseline differences post rtx dynamics resulted infections parameters uremia associated premature aging peripheral cells predict posttransplant infections analysis cell differentiation status relative telomere length cells frequency recent thymic emigrants defined cell aging parameters authors observe association development infection renal transplantation degree premature cell aging prior transplantation end stage renal disease patients
urban habitats described overall negative influence many fitness related traits several bird species vital function immunity remains poorly studied immune response strongly linked individual condition partly depends resource availability parasitic context often differ urban natural habitats difference immunity populations dwelling urban areas populations natural habitats therefore hypothesized conducted year experimental study great tits parus major urban forest areas stimulated constitutive immunity nestlings assessed inflammatory response measuring plasma levels haptoglobin inflammatory marker activation cost loss body mass addition checked nestlings ectoparasites assessed haemosporidian prevalence adults nestlings urban sites produced relatively less haptoglobin lost body mass forest sites suggests activation constitutive immunity costly birds living urban sites living forest detected ectoparasite birds habitats however urban adults showed lower haemosporidian prevalence forest ones suggesting reduced exposure parasites vectors towns overall study provides evidence immune difference urban forest populations immunity crucial organism fitness prime interest identify causes processes origin difference
plasma gelsolin pgsn multifunctional protein involved mainly severing clearing actin filaments level correlates inflammation several diseases making potential biomarker diagnostic prognostic values pgsn level groups treated untreated hiv infected indian patients investigated study study aims investigating levels pgsn hiv infected patients across different age sex severity disease treatment status blood samples patients analyzed counts flow cytometry pgsn quantified enzyme linked immunosorbent assay elisa level pgsn significantly increased hiv infected patients compared healthy volunteers level correlates cell counts patients lower counts showed higher pgsn levels vice versa gender affect pgsn level however antiretroviral arv treatment reduces pgsn toward normal within low cell count group untreated patients higher pgsn healthy volunteers whereas treatment difference reduces similarly high cell count cells group patients showed increase pgsn untreated patients compared increase treated patients upregulation pgsn hiv infection inversely correlated cell counts treatment arv drugs decreases pgsn levels toward normal monitoring pgsn level hiv infected patients could important indicator severity disease recovery treatment
objective objective vitro study evaluate effect low intensity pulsed ultrasound resorption activity osteoclast cell cultures design raw cells cultured seeded plates pre coated synthetic carbonate apatite marked fluoresceinamine labeled sodium chondroitin polysulfate plates randomly divided groups according treatment assigned one rankl rank addition ultrasound application lipus addition rank ultrasound application lipus addition rank min ultrasound application per day lipus addition rank min ultrasound application per day ultrasound device produced mhz pulses repetition rate khz intensity experiment extended one week afterwards resorption activity evaluated according fluorescence intensity analysis pit resorption measurements number pits mean area results experiment consistently demonstrated low intensity pulsed ultrasound application enhanced osteoclasts resorptive activity addition demonstrated daily ultrasound application lasted longer min resorption highest results obtained evaluation methods reasonably coherent conclusions low intensity pulsed ultrasound increases osteoclast resorptive activity absence osteoblasts effect seems influenced ultrasound treatment time future research might directed investigate osteoclast response different ultrasound application protocols frequencies intensities potential cellular mechanisms elsevier ltd rights reserved
study investigated possibility reversed micelles widely used enzyme reactor lipases determination lipoxygenase activity although rapid simple reversed micelles limitations interference absorbing materials surfactant lipoxygenase activity reversed micelles determined reading absorbance lipid hydroperoxidation product conjugated diene among surfactants organic media aot isooctane effective dioxygenation linoleic acid reversed micelles strong absorbance aot region major obstacle direct application aot isooctane reversed micelles lipoxygenase activity determination prevent interference aot added aot removal step procedure lipoxygenase activity determination reversed micelles lipoxygenase activity dependent water content maximum activity obtained value elsevier ltd rights reserved
nonsense mediated mrna decay nmd conserved eukaryotic quality control mechanism triggers decay mrnas harboring premature translation termination codons chapter describe methods monitoring influence nmd mrna abundance decay rates saccharomyces cerevisiae descriptions include detailed methods growing yeast cells total rna isolation northern blotting although chapter focuses nmd methods easily adapted assess effect mrna decay pathways
present study inhibitory properties diisopropylamino ethyl hydroxy dimethoxybenzoyl amino thiazole carboxamide monohydrochloride trihydrate novel gastroprokinetic agent investigated compared cisapride establish potential drug drug interactions notable inhibition terfenadine metabolism isoforms cytochrome cypa vitro studies using human liver microsomes mainly metabolized glucuronide ugta udp glucoronosyltransferase family polypeptide ugta show marked inhibition glycoprotein activity hand cisapride strongly inhibited cypa markedly inhibited cypc furthermore used whole cell patch clamp technique investigate effects cisapride potassium currents human embryonic kidney hek cells transfected human ether related gene herg significant effect herg related current relatively high concentration mum contrast inhibition small compared cisapride thousand fold lower concentration prediction method drug interaction terfenadine cisapride based parameters suggest possibility terfenadine mainly affect interval since plasma concentration would markedly increased cisapride may changed thus contrast cisapride inhibit cyp herg channel predominantly metabolized glucuronide conjugation considered unlikely cause significant drug drug interactions coadministered cyp substrates clinically effective doses elsevier rights reserved
previous northern blotting analyses rice seedlings screened several wrky genes among transcripts differentially regulated following treatments high salinity cold stress polyethylene glycol peg heat shock report characterization wrky gene oswrky rice found inducible peg nacl abscisic acid aba naphthalene acetic acid naa ortholog atwrky arabidopsis determine whether overexpression oswrky alters abiotic stress tolerance oswrky recombinant generated transformed arabidopsis physiological tests indicated oswrky transgenic arabidopsis displayed increased tolerance mannitol stress increasing lateral root number primary root length seeding root development semi quantitative pcr showed atcor atrd two aba independent abiotic stress responded genes induced oswrky transgenic plants results suggest oswrky improves osmotic stress tolerance transgenic arabidopsis aba independent signaling pathway
process curing patient removing illness extracting blood old one many years ago phlebotomy practiced cure illness old process placed rational basis therapeutic apheresis followed clinical practice therapeutic plasma exchange tpe hollow fiber modules used different severe diseases years based many years experience extracorporeal circulation end stage renal disease authors herein give overview immunological diseases especially hematologic autoimmune dermatologic diseases updated information immunology molecular biology different immunological diseases discussed relation rationale apheresis therapy place combination modern therapies introduction novel effective biologic agents indicated severe cases rapid progression despite immunosuppressive therapy biologic agents mild forms autoimmune disease treatment immunosuppressive therapies biologic agents seems sufficient prognosis autoimmune diseases varying organ manifestations improved recent years due part aggressive therapy schemes immunological diseases treated guidelines german working group clinical nephrology apheresis applications committee american society apheresis cited shown effectively remove autoantibodies blood lead rapid clinical improvement
multiple mutation combinations igg characterized tailor immune effector function igg serum persistence fit desired biological outcomes monoclonal antibody therapeutics unintended consequence introducing mutations particularly domain reduction biophysical stability correlate increased aggregation propensity poor manufacturability lower solubility herein characterize changes igg conformational colloidal stability sets mutations yte combined generate antibody format lacking immune receptor binding exhibiting extended half life addition significantly lowered thermostability observe greater conformational flexibility yte increased self association poorer solubility aggregation profiles improve properties dissected contributions individual mutations within yte thermostability substituted destabilizing mutations new mutations raise thermostability one novel combination fqq yte significantly improved conformational colloidal stability found retain biological activities yte extended half life lack antibody dependent cell mediated cytotoxicity complement dependent cytotoxicity activity engineering approach offers way improve developability antibodies containing mutations retaining tailored biological activity american pharmacists association published elsevier inc rights reserved
ectromelia virus ectv causative agent mousepox represents genus variola virus varv agent responsible smallpox humans served years model virus studying mechanisms poxvirus induced disease despite increasing knowledge interaction ectv natural host mouse surprisingly still little known cell biology ectv infection pathogen interaction cytoskeleton still growing area research virus host cell interplay aim present study evaluate consequences ectv infection cytoskeleton murine fibroblast cell line viral effect cytoskeleton reflected changes migration cells rearrangement architecture tubulin vimentin actin filaments virus induced cytoskeletal rearrangements observed studies contributed efficient cell cell spread infection important feature ectv virulence additionally later stages infection cells produced two main types actin based cellular protrusions short actin tails dendrites long cytoplasmic corridors due diversity filopodial extensions induced virus suggest ectv represents valuable new model studying processes pathways regulate formation cytoskeleton based cellular structures wiley periodicals inc
radical adenosylmethionine adomet enzymes comprise large superfamily proteins engage diverse series biochemical transformations generation highly reactive deoxyadenosyl radical intermediate recent advances biosynthesis unique iron sulfur fes containing cofactors cluster fefe hydrogenase femo nitrogenase well iron guanylylpyridinol fegp cofactor hydrogenase implicated new roles radical adomet enzymes biosynthesis complex inorganic cofactors radical adomet enzymes conjunction scaffold proteins engage modifying ubiquitous fes precursors unique clusters novel amino acid decomposition sulfur insertion reactions ability radical adomet enzymes modify common metal centers unusual metal cofactors may provide important clues stepwise evolution complex bioinorganic catalysts article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
respiratory syncytial virus rsv one common respiratory pathogens immoderate inflammation plays great role causing rsv induced diseases present study watsonianone isolated fruit rhodomyrtus tomentosa ait hassk found show good inhibitory effect rsv induced production half maximal inhibitory concentration nzyme linked immunosorbent assay fluorescence quantitative polymerase chain reaction analyses indicated watsonianone markedly reduced mrna protein levels tumor necrosis factor interleukin monocyte chemoattractant protein rsv infected raw cells mechanistically watsonianone inhibited nuclear factor kappa kappa activation suppressing ixba phosphorylation analysis revealed watsonianone activated thioredoxin system decreased intracellular reactive oxygen species ros levels closely associated activation rsv infected cells results reveal watsonianone attenuate rsv induced inflammation via suppression ros sensitive inflammatory signaling
purpose describe genotypes distribution orientia tsutsugamushi guangzhou explore differences clinical laboratory features among genotypes method collected blood eschar samples scrub typhus cases reported district hospitals positive pcr tested pcr positive samples dna sequencing phylogenetic analysis collected demographic clinical laboratory data questionnaire medical records result total samples tested pcr positive four genotypes identified karp kato gilliam two new strains zcx chx strain previously unidentified guangzhou gilliam type cases likely continuous fever kato genotype cases presented splenomegaly laboratory features kato group higher level white blood cell count normal range groups total bilirubin direct bilirubin gilliam group respectively lower groups normal value conclusion continuous fever splenomegaly may distinctive symptom gilliam kato genotype cases respectively karp genotype remained dominant guangzhou attention paid emergence new types variation existing genotypes
evaluation absorbed dose pesticides humans requires knowledge kinetics dynamics compound circumstances data allow estimation dose may available human volunteer studies although often based results animal studies human metabolism data available estimates dose may accurate recognized pesticide exposure occupational setting may differ controlled laboratory study study data previously published studies used evaluate urinary excretion dichlorophenoxyacetic acid following single dermal applications human volunteers studies evaluated objective determining best method predicting total absorbed dose following multiple varied exposures occupational settings alternative laboratory controlled human volunteer studies presented data third previously published biological monitoring study six professional pesticide applicators week period used generate estimates urinary excretion pesticide would result single dose method used estimate urinary excretion parameters variation overlay technique used pharmacology may provide information kinetics pesticides possible conduct human studies generated estimates urinary excretion day period remarkably similar obtained controlled studies finally method developed use generated estimates determine total absorbed dose pesticides independent group professional pesticide applicators method requires information amount pesticide used days prior collection two urine samples
background tick borne diseases greatly impact human animal health worldwide vaccines environmentally friendly alternative acaricides control recent results suggested aquaporin aqp water channels key function tick feeding development constitute good candidate antigens control tick infestations methods describe effect vaccination ixodes ricinus aqp iraqp tick aqp conserved region coaqp ricinus tick larval mortality feeding molting results demonstrated vaccination iraqp coaqp efficacy respectively control ricinus larvae considering cumulative effect reducing tick survival molting conclusions effect aqp vaccines larval survival molting essential reduce tick infestations extended previous results effect microplus aqp control cattle tick infestations results supports aqp particularly coaqp might candidate protective antigen control different tick species elsevier ltd rights reserved
health economic burden asthma united states substantial asthma self management education home based interventions asthma improve asthma control prevent asthma exacerbations interest health care public health collaboration regarding asthma increasing however outpatient home based asthma intervention programs widely available economic sustainability common concern thus conducted narrative review existing literature regarding economic outcomes outpatient home based intervention programs asthma united states identified outpatient programs home based intervention programs return investment roi data programs associated positive roi programs observed positive rois among selected populations higher health care utilization interpretation existing data limited heterogeneous roi calculations nevertheless literature suggests promise sustainable opportunities expand access outpatient home based asthma intervention programs united states definitive knowledge maximize program benefit sustainability could gained controlled studies specific populations increased uniformity economic assessments published elsevier inc behalf american academy allergy asthma immunology
molecular dynamics simulations using combined quantum mechanical molecular mechanical potential carried investigate internal proton transfer equilibrium external aldimine species dopa decarboxylase carbanion stabilization enzyme cofactor active site alanine racemase solvent effects lower free energy protonated plp tautomer aqueous solution active site resulting free energy difference kcal mol relative protonated schiff base enzyme external aldimine provides dominant contribution lowering free energy barrier spontaneous decarboxylation dopa water remarkable kcal mol enzyme dopa decarboxylase lowers barrier kcal mol kinetic isotope effects also determined using path integral free energy perturbation theory primary secondary substitutions case alanine racemase pyridine ring unprotonated active site destabilizing contribution formation alpha carbanion gas phase although pyridine ring protonated contribution stabilizing aqueous solution alanine racemase alpha carbanion stabilized pyridine ring protonated unprotonated computational studies illustrated article show combined simulations help provide deeper understanding mechanisms plp dependent enzymes article part special issue entitled pyridoxal phosphate enzymology published elsevier
human body head lice highly related haematophagous ectoparasites body louse shown transmit bartonella quintana causative agent trench fever mechanisms body lice became vector quintana however poorly understood following oral challenge green fluorescent protein expressing quintana proliferated days postchallenge number bacteria significantly higher whole body head lice numbers quintana detected faeces infected lice however approximately lice nevertheless viability quintana significantly higher body louse faeces comparison immune responses alimentary tract tissues revealed basal transcription levels peptidoglycan recognition protein defensins lower body lice transcription defensin regulated oral challenge wild type quintana head body lice addition level cytotoxic reactive oxygen species generated epithelial cells significantly lower body lice although speculative time reduced immune response consistent higher vector competence seen body head lice terms quintana infection
purpose demonstrate utility system dynamics computer modeling study gain insight impacts physical activity diet weight gain loss methods holistic system dynamics computer model presented integrates processes human metabolism hormonal regulation body composition nutrition physical activity processes independent one another model captures complex interdependencies regulation body weight energy metabolism article demonstrates integrative simulation model serve viable laboratory tool controlled experimentation investigate impacts physical activity diet body weight composition results one experiment weight loss moderate level daily exercise slightly less loss dieting although exercise favorable impact body composition protecting loss fat free mass ffm however failed blunt drop resting energy expenditure ree accompanies diet based weight loss smaller loss ffm indeed induce smaller drop nominal ree however preservation ffm also affected relatively larger loss turn induced larger adaptive reduction metabolic rate two adaptations almost totally offset one another causing minimal differences ree second experiment exercise regimens moderate high level intensity proved counterproductive weight reducing strategies however diet changed balanced composition one highly loaded carbohydrates became possible sustain intense exercise regimen experimental period achieve significant drop body weight conclusion results underscore significant interaction effects physical activity diet body composition demonstrate utility computer based experimentation study gain insight make predictions dynamics
fatty acid synthase fasn key anabolic enzyme novo fatty acid synthesis important development colon carcinoma high expression fasn considered promising molecular target colon cancer therapy emodin naturally occurring anthraquinone exhibits anticancer effect various types human cancer including colon cancer however molecular mechanisms remain fully elucidated cell viability evaluated using cell counting kit assay apoptosis rate cells quantified via flow cytometry following annexinv propidium iodide staining fasn activity measured monitoring oxidation nicotinamide adenine dinucleotide phosphate wavelength intracellular free fatty acid levels detected using free fatty acid quantification kit western blot analysis reverse transcription polymerase chain reaction used detect target gene protein expression present study performed investigate whether gene expression fasn enzymatic activity regulated emodin human colon cancer cell line emodin markedly inhibited proliferation hct cells higher protein level fasn expressed compared snu snu cells emodin significantly downregulated protein expression fasn hct cells caused protein degradation due elevated protein ubiquitination emodin also inhibited intracellular fasn enzymatic activity reduced levels intracellular free fatty acids emodin enhanced antiproliferation apoptosis dose time dependent manner combined treatment emodin cerulenin commercial fasn inhibitor additive effect activities palmitate final product fasn reaction rescued emodin induced viability apoptosis addition emodin altered fasn involved signaling pathways including phosphatidylinositol kinase akt mitogen activated protein kinases extracellular signal regulated kinases results suggested emodin regulated cell growth apoptosis mediated inhibiting fasn provide molecular basis colon cancer therapy
tospoviruses genus tospovirus family bunyaviridae responsible major losses extensive range crops worldwide new species single stranded ambisense rna viruses regularly emerge shown maintain heterogeneous populations individual isolates quite variable biological virulence characteristics tospovirus phylogenetic studies focused analysis single gene often nucleocapsid protein gene complete genomic rna segment amplification single fragment would facilitate detailed analyses genome wide sequence variability obtaining sequences large number tospovirus isolates using traditional methods amplification cloning small overlapping fragments tedious time consuming expensive study protocols optimized amplify clone sequence full length rna genome segments tomato spotted wilt virus impatiens necrotic spot virus strategy presented straightforward scalable offers several advantages previously commonplace overlapping amplicon based approach use whole genome segments instead individual gene sequences defined portions genome segments facilitate better understanding underlying molecular diversity tospoviruses mixed infections elsevier rights reserved
cytochrome reductase cpr contains loop within active site comprising asp ala arg asn human cpr numbering relocates upon nadph binding repositioning loop triggers reorientation fad shielding tryptophan trp partially stacked conformer reducing energy barrier displacement residue nadph nicotinamide ring essential step hydride transfer used site directed mutagenesis kinetic analysis investigate amino acid composition loop influences catalytic properties cpr variants elicited modest increase coenzyme binding affinity coupled fold reduction cytochrome turnover fold decrease pre steady state rate flavin reduction results combination reduction kinetic isotope effect hydride transfer suggest diminished activity due destabilization partially stacked conformer trp slower release nadp contrast double mutant led modest increase cytochrome reduction linked weaker coenzyme binding faster interflavin electron transfer potential mechanism arg influences catalysis discussed elsevier inc rights reserved
metabolism plays key role many major human diseases generation high throughput omics data ushered new era systems biology genome scale metabolic network reconstructions provide platform interpret omics data biochemically meaningful manner release global human metabolic network recon enabled new systems biology approaches study human physiology pathology pharmacology currently publications utilize recon including studies cancer diabetes host pathogen interactions heritable metabolic disorders target drug binding effects mini review focus reconstruction global human metabolic network four classes application show computational simulations numerous pathologies yielded clinically relevant results many corroborated existing newly generated experimental data
rationale mammalian heart minimal regenerative capacity response mechanical pathological stress heart undergoes cardiac remodeling pressure volume overload heart cause increased size hypertrophic growth cardiomyocytes whereas regulatory pathways activate cardiac hypertrophy well established molecular events inhibit repress cardiac hypertrophy less known objective identify investigate novel regulators modulate cardiac hypertrophy methods results report identification characterization functional examination novel cardiac isl interacting protein cip cip identified bioinformatic search novel cardiac expressed genes mouse embryonic hearts cip encodes nuclear protein without recognizable motifs northern blotting situ hybridization reporter gene tracing demonstrated cip highly expressed cardiomyocytes developing adult hearts yeast two hybrid screening identified isl lim homeodomain transcription factor essential specification cardiac progenitor cells second heart field cofactor cip cip directly interacted isl mapped domains two proteins mediate interaction show cip represses transcriptional activity isl activation myocyte enhancer factor expression cip dramatically reduced hypertrophic cardiomyocytes importantly overexpression cip repressed agonist induced cardiomyocyte hypertrophy conclusions studies therefore identify cip novel regulator cardiac hypertrophy circ res
cells accrue intestine response particular microbes rodents segmented filamentous bacteria sfb induce intestinal cells analogously functioning microbes humans remain undefined identified human symbiont bacterial species particular bifidobacterium adolescentis could alone induce cells murine intestine similar sfb adolescentis closely associated gut epithelium engendered cognate cells without attendant inflammation however adolescentis elicited transcriptional program clearly distinct sfb suggesting alternative mechanism promoting cell accumulation inoculation mice adolescentis exacerbated autoimmune arthritis bxn mouse model several theshelf probiotic preparations include bifidobacterium strains also drove intestinal cell accumulation
artemisinin sesquiterpene lactone isolated artemisia annua sweet wormwood extensively used treatment malaria order better understand metabolism terpenes annua influence terpene synthases artemisinin yield expression pattern monoterpene alcohol dehydrogenase adh studied using transgenic plants expressing promoter beta glucuronidase gus fusion adh played major role monoterpenoid biosynthesis including carveol borneol artemisia ketone vitro biochemical analysis study adh promoter cloned genome walking method number putative cis acting elements predicted promoter region suggesting adh driven complex regulation mechanism adh gene highly expressed old leaves whereas artemisinin biosynthetic genes mainly expressed bud young leaves expression adh gene increased quickly leaf development revealed qrt pcr gus expression analysis different tissues transgenic annua demonstrates adh expression exclusively located shaped trichome glandular secretory trichome international union biochemistry molecular biology inc volume number pages
many great morphologists nineteenth century marvelled similarities limbs diverse species charles darwin noted homologies significant supporting evidence descent modification common ancestor sir richard owen also took great care highlight elements forelimb hindlimb multitude species focused attention homology hoof horse middle digit man ensuing decades brought convergence palaeontology experimental embryology molecular biology lend support homologies tetrapod limbs developmental origins however understand conserved mechanisms limb development development gross morphological disturbances little presented experimental medical literature reflects remarkable diversity resulting million year experiment natural selection understanding conserved divergent limb morphologies new age genomics genome engineering promises reveal developmental potential residing limbs unravel mechanisms evolutionary variation limb size shape review present current state rapidly advancing understanding evolutionary origin hands feet highlight known mechanisms shape diverse limbs article part themed issue evo devo genomics era origins morphological diversity
gamma delta cells represent evolutionarily primitive cell subset characterized distinct cell receptors tcrs innate adaptive immune functions however presence cell subset ancient vertebrates remains unclear study gamma delta cells zebrafish danio redo model subjected molecular cellular characterizations constant regions zebrafish tcr gamma drtrgc drtrdc initially identified zebrafish gamma delta cells accounted total lymphocytes spleen head kidney peripheral blood skin gill intestine tissues possess typical morphological features lymphocytes surface phenotype gamma delta zebrafish gamma delta cells functionally showed potent phagocytic ability soluble particulate antigens also act antigen presenting cell initiate antigen klh specific klh cell activation induce cell proliferation igm production particularly zebrafish gamma delta cells also play critical role antigen specific igz production intestinal mucus findings demonstrated gamma delta cells originated early teleost fish providing valuable insights evolutionary history cell subset anticipated study would used guide develop zebrafish model cross species investigation gamma delta cell biology
long non coding rnas lncrnas represent new frontier molecular biology play important roles regulating gene expression epigenetic transcriptional post transcriptional levels lncrnas found play important roles normal cell physiological activities participate development varieties tumors diseases previously able determine function lncrnas multiple mechanisms including genetic imprinting chromatin remodeling splicing regulation mrna decay translational regulation application technological advances research function lncrnas extremely important major tools exploring lncrnas include microarrays rna sequencing rna seq northern blotting real time quantitative reverse transcription polymerase chain reaction qrt pcr fluorescence situ hybridization fish rna interference rnai rna binding protein immunoprecipitation rip chromatin isolation rna purification chirp crosslinking immunopurification clip bioinformatic prediction review highlight functions lncrnas advanced methods research lncrna protein interactions
aging society therewith associated neurodegenerative neuropsychiatric diseases including depression alzheimer disease obsessive disorders parkinson disease urgently require novel drug candidates targets include monoamine oxidases maos acetylcholinesterase ache butyrylcholinesterase bche various receptors transporters rational drug design particularly important combine experimental synthetic kinetic toxicological pharmacological information structural computational work paper describes application various modern computational biochemistry methods order improve understanding relationship structure function large biological systems including ion channels transporters receptors metabolic enzymes methods covered stem classical molecular dynamics simulations understand physical basis time evolution structures combined approaches probe chemical mechanisms enzymatic activities inhibition illustrative example later focus monoamine oxidase family enzymes catalyze degradation amine neurotransmitters various parts brain imbalance associated development progression range neurodegenerative disorders inhibitors act mainly mao used treatment depression due ability raise serotonin concentrations mao inhibitors decrease dopamine degradation improve motor control patients parkinson disease results give strong support mao isoforms operate hydride transfer mechanism relevance mao catalyzed reactions mao inhibition context neurodegeneration discussed
developed fast selective sensitive line method simultaneous determination nine parabens seven environmental phenols urine parabens widely used antimicrobial preservatives bisphenol triclosan triclocarban phenylphenol benzophenones used inter alia disinfectants sunscreens polymers substances suspected endocrine disruptors limits quantification analytical quality criteria fully met needs determining exposure levels occurring general population analyzed spot urine samples general german population females males children parabens found methyl ethyl propyl paraben high detection rates followed butyl iso butyl iso propyl benzyl paraben detected pentyl heptyl paraben urinary concentrations highest methyl paraben median percentile followed ethyl propyl paraben environmental phenols high detection rates bpa triclosan benzophenone parabens environmental phenols found higher urinary levels females males children probably due differences personal care product use however high levels range also observed children exposure substances occurring worldwide differences countries seem exist might caused different product compositions different use habits human metabolism data urgently needed extrapolate urinary biomarker levels doses actually taken elsevier gmbh rights reserved
background arrhythmogenic right ventricular cardiomyopathy arvc genetically heterogeneous condition caused mutations genes encoding desmosomal proteins cases genotype negative cases point need identifying novel genetic substrates studying genotype negative arvc families methods results whole exome sequencing performed cousins arvc validation heterozygous variants survived internal quality frequency filters performed sanger sequencing variants also genotyped family members establish genotype phenotype cosegregation high resolution melting analysis followed sanger sequencing used screen mutations cadherin cdh gene unrelated genotype negative patients arvc generation family identified whole exome sequencing novel mutation cdh glnpro cosegregated arvc affected family members cdh variant present chromosomes available public databases changes conserved amino acid cadherin protein supported causal mutation parametric linkage analysis subsequently screened genotype negative arvc probands tested previously mutations known arvc genes found additional likely pathogenic variant cdh aspasn cdh encodes cadherin also known cadherin protein plays vital role cell adhesion making biologically plausible candidate gene arvc pathogenesis conclusions data implicate cdh mutations novel genetic causes arvc contribute complete identification disease genes involved cardiomyopathy
flavin general name given molecules heteroaromatic ring system dimethylisoalloxazine practically means riboflavin rfl flavin adenine dinucleotide fad flavin mononucleotide fmn biological systems whose structures illustrated fig together atomic numbering scheme ring numbering isoalloxazine moiety isoalloxazine skeleton synthesized human cells obtained diet rfl vitamin fad fmn act cofactors flavoenzymes rfl flavoenzymes catalyze redox reactions substrates miura chem rec serves oxidant oxidation half cycle enzymic reaction enzyme called flavo oxidase others enzyme called flavo dehydrogenase difference two types oxidative catalysis arises delicate differences electron distributions isoalloxazine ring revealed raman spectroscopy miura chem rec since flavin extremely versatile molecule scientific field including chemistry biochemistry enzymology collectively called flavonology found recently however flavin also acts chromophore initiate light induced dna repair signal transductions sancar chem rev
complex pathology spinal cord injury sci involving cascade secondary events formation inhibitory barriers hampers regeneration across lesion site often results irreversible loss motor function limited regenerative capacity endogenous cells sci led focus development cell therapies confer neuroprotective neuroregenerative benefits stem cells emerged candidate cell source ability self renew differentiate multitude specialized cell types ethical safety concerns impeded use stem cells past advances isolation differentiation methods largely mitigated issues confluence work stem cell biology genetics developmental neurobiology informed directed differentiation specific spinal cell types transplantation stem cell derived populations replace lost cells provide trophic support remyelinate surviving axons form relay circuits contribute functional recovery refinement stem cell differentiation transplantation methods including combinatorial strategies involve biomaterial scaffolds drug delivery critical stem cell based treatments enter clinical trials biotechnol bioeng wiley periodicals inc
cold major constraint tomato growth productivity cold sensitive crop dreba plays key role generating cold tolerance tomato regulating response multiple genes chilling stress study cold tolerant gene dreba driven lip promoter transformed three tomato genotypes agrobacterium tumefaciens employing tissue culture independent transformation strategy overnight imbibed seeds tomato surface sterilized day old shoot apical meristem developing seedling pierced incubated twenty minutes tumefaciens strain eha treated seeds cultivated agrobacterium days regenerated shoots subjected hygromycin selection period weeks presence dreba hpt genes hygromycin resistant transgenic plants evaluated pcr analysis transgene activity detected plants reverse transcriptase polymerase chain reaction southern blotting showed stable integration transgene next generation physiological analysis transgenic plants depicted increased expression dreba induced chilling stress various chilling stresses stomatal conductance transpiration rate relative water contents transgenic lines significantly higher plants leaf osmotic potential transgenic plants lower compared plants established procedure novel produce stable transgenic tomato plants efficient manner saving potential resources terms cost time
somatic embryos quercus robur derived mature juvenile trees transformed cstl gene coding antifungal protein clumps somatic embryos inoculated agrobacterium tumefaciens strain eha harbouring binary vector pkwgd tau included green fluorescence protein gfp reporter gene weeks culture selective medium significantly higher transformation frequencies obtained temporary immersion system tis semi solid medium ranging four genotypes first transformants appeared weeks gfp activity evaluated kan resistant embryogenic lines transgenic nature lines confirmed pcr southern blotting cstl transcripts detected transgenic lines analyzed quantitative real time pcr levels expression significantly higher wild type reaching times higher genotypes sixty two stable obtained derived centenarian trees plant conversion rates transformed somatic embryos similar increased use tis gfp fluorescence detected roots shoots transgenic plants confirmed stable transformation regenerants
phagocytosis autophagy macrophages shown essential innate adaptive immunity lysosomes main catabolic subcellular organelles responsible degradation recycling extracellular intracellular material final steps phagocytosis autophagy however molecular mechanisms underlying lysosomal functions infection remain obscure study conducted quantitative proteomics analysis changes constitution glycosylation proteins lysosomes derived murine raw macrophage cells treated different types pathogens comprising examples bacteria listeria monocytogenes dna viruses herpes simplex virus type hsv rna viruses vesicular stomatitis virus vsv total lysosome related proteins potential glycosylation sites proteins identified comparative analysis showed aforementioned pathogens induced distinct alterations proteome lysosome closely associated immune functions macrophages toll like receptor activation inflammation antigen presentation significant changes proteins fluctuations glycosylation also determined furthermore western blot analysis showed changes expression proteins undetectable whole cell level thus study provides unique insights function lysosomes macrophage activation immune responses
escherichia coli related foodborne illnesses continue one important global public health problems world study aims determine coli prevalence chicken meat parts giblets samples collected randomly several supermarkets butchers diyarbakir city southeast turkey analyzed confirmed using immunomagnetic separation ims vitek microbial identification system polymerase chain reaction pcr method study also aims detect presence flic eaea stx stx hlya genes using pcr overall coli prevalence chicken meat parts giblets coli isolates carried rfbe eaea genes flic hlya genes coli isolates obtained drumstick breast meat carried either stx stx genes related important virulence factors disease
pogostemon cablin blanco benth important medicinal plant however molecular biology remains largely unexplored report results whole transcriptome wide analyses cablin using next generation sequencing technology present study generated unigenes using rna sequencing data among unigenes annotated database intact open reading frames orfs accounted predicted orfs demonstrating assembled transcriptome high quality gene expression levels leaf stem quantified unigenes determined significantly differentially expressed patchouli alcohol pogostone metabolic pathway cablin also reconstructed among putative homologs biosynthesis related genes seven significantly upregulated stems three genes significantly upregulated leaves correlation essential oil contents cablin potentially pivotal genes production identified considering contents leaves stems markedly different plant detect pattern expression levels candidate genes leaves stems speculate biosynthesis probably accumulates leaves stems cablin transcriptome cabin facilitate researches molecular system biology pogostemon genus well depth studyies biosynthesis potential applications genetic engineering
multidirectional interactions among immune endocrine nervous systems demonstrated humans non human animal models many decades biomedical community ecological evolutionary perspectives lacking neuroendocrine immune interactions conceptualized using series feedback loops culminate distinct neuroendocrine immune phenotypes behavior exert profound influences phenotypes turn reciprocally modulate behavior example behavioral aspects reproduction including courtship aggression mate selection parental behaviors impinge upon neuroendocrine immune interactions one classic example immunocompetence handicap hypothesis ichh proposes steroid hormones act mediators traits important female choice suppressing immune system reciprocally neuroendocrine immune pathways promote development altered behavioral states sickness behavior understanding energetic signals mediate neuroendocrine immune crosstalk active area research although field psychoneuroimmunology pni begun explore crosstalk biomedical standpoint neuroendocrine immune behavior nexus relatively underappreciated comparative species field ecoimmunology traditionally emphasizing study non model systems ecological evolutionary perspective often natural conditions focused less physiological mechanisms underlying behavioral responses review summarizes neuroendocrine immune interactions using comparative framework understand ecological evolutionary forces shape complex physiological interactions elsevier inc rights reserved
shape inflorescence arabidopsis thaliana ecotype columbia raceme individual flowers developing acropetally ecotype landsberg harboring erecta mutation shows corymb like inflorescence namely compact inflorescence flattened arrangement flower buds tip gain insight inflorescence development previously isolated corymb like inflorescence mutants named corymbosal crm found corymb like inflorescence crm due reduced cell elongation pedicels stem internodes double mutants crm crm crm crm triple mutants show additive phenotype crm caused mutation big required polar auxin transport crm big expressed inflorescence meristems floral meristems vascular tissues analyzed collection reduced lateral root formation rlr mutants allelic crm categorized mutants three classes depending plant developmental defects although alleles new stop codons phenotype heterozygous crm doc northern blotting suggest new crm big mutant alleles hypomorphic auxin responsive drrev gfp expression decreased crm vasculature pedicels stem internodes pinformed pin crm big expressed vasculature pedicels stem internodes severity corymb like inflorescence crm big mutants correlated increased levels pin results suggest crm big controls elongation pedicels stem internodes auxin action
adrenal cortex critical physiological function central site glucocorticoid mineralocorticoid synthesis possesses great degree specialized compartmentalization multiple hierarchical levels ranging tissue molecular levels paper discuss functionalization beginning tissue zonation adrenal cortex impacts steroidogenic output discuss cellular biology steroidogenesis placing special emphasis mitochondria mitochondria classically known powerhouses cell central role respiratory adenosine triphosphate synthesis attention given mitochondrial electron transport context mitochondrial respiration mitochondrial steroid metabolism building work demonstrating functional assembly large protein complexes respiration review research demonstrating role multimeric protein complexes mitochondrial cholesterol transport steroidogenesis mitochondria endoplasmic reticulum contact aim highlight review shift steroidogenic cell biology focus actions individual proteins isolation actions protein assemblies working together execute cellular functions
nicotinic acid phosphoribosyltransferase naprtase rate limiting enzyme three step preiss handler pathway biosynthesis nad enzyme catalyzes conversion nicotinic acid phosphoribosyl pyrophosphate prpp nicotinic acid mononucleotide namn pyrophosphate ppi several studies underlined importance naprtase nad homeostasis mammals crystallographic data available enzyme higher eukaryotes report crystal structure human naprtase solved molecular replacement resolution angstrom ligand free form structural data allow assignment human naprtase type phosphoribosyltransferase subfamily reveal enzyme consists two domains functions dimer active site located interface monomers substrate binding mode analyzed molecular docking simulation provides hints catalytic mechanism moreover structural comparison human naprtase two human type phosphoribosyltransferases involved nad biosynthesis quinolinate phosphoribosyltransferase nicotinamide phosphoribosyltransferase reveals three enzymes share conserved overall structure distinctive structural traits identified particular show naprtase lacks tunnel nicotinamide phosphoribosiltransferase represents binding site potent selective inhibitor currently used clinical trials antitumoral agent authors published elsevier behalf federation european biochemical societies open access article license
phagocytes display marked heterogeneity capacity induce control acute inflammation significant impact effectiveness antimicrobial immune responses different tissue sites well predisposition inflammation associated pathology imaging flow cytometry provides novel opportunities characterization phagocyte populations high spatial resolution statistical robustness broad range quantitative morphometric cell analysis tools study highlights integrative approach brings together new tools imaging flow cytometry conventional methodologies characterization phagocyte responses acute inflammation focus comparative avian vivo challenge model showcase added depth gained novel quantitative multiparametric approaches even absence antibody based cellular markers characterization acute inflammation model shows significant conservation phagocytic capacity among avian phagocytes compared animal models however also highlights evolutionary divergence regards phagocyte inflammation control mechanisms based internalization apoptotic cells published elsevier inc
catalytic domain trimeric human enoyl coa isomerase type hseci typical crotonase fold active site fold two main chain groups form oxyanion hole binding thioester oxygen enoyl coa substrate molecules catalytic glutamate essential proton transfer substrate atoms forming product enoyl coa key intermediate oxidation pathway active site covered terminal helix hseci isomerase domain extended terminus acyl coa binding protein acbp domain small angle ray scattering analysis hseci shows acbp domain protrudes central isomerase trimer ray crystallography isomerase domain trimer identifies active site geometry tunnel shaped loop extending catalytic site bulk solvent suggests likely mode binding fatty acyl chains calorimetry data show separately expressed acbp isomerase domains bind tightly fatty acyl coa molecules truncated isomerase variant without acbp domain significant enoyl coa isomerase activity however full length isomerase efficient structural enzymological studies helix variants show importance helix efficient catalysis hydrophobic side chains together residues loop loop complete hydrophobic cluster covers active site thereby fixing thioester moiety mode binding competent efficient catalysis databasestructural data available pdb database accession numbers iso eci isoa eci isob eci
maturation cumulus oocyte complexes cocs crucial successful monospermic fertilization embryo growth implantation events accompanied proliferation differentiation cumulus cells migration cocs oviduct ovulation interaction female gametes embryos maternal tissues still poorly recognized molecular level study aimed first demonstrate themrnaexpression profile cell migration markers different stages porcine oocytes maturation developmental capability vitro cocs collected total pubertal crossbred landrace gilts brilliant cresyl blue bcb stained analyzed vitro maturation ivm using affymetrix porcine gene array expression profile porcine transcripts examined found nine genes involved cell migration mechanisms pld kit lama mapk vegfa tgfbr insr tpm rtn genes upregulated porcine oocytes ivm compared post ivm expression analysis moreover important mechanisms biological interaction vegfa kit vegfa insr also observed upregulation downregulation selected mrnas expression microarray assays checked approved real time quantitative polymerase chain reaction suggest several genes including lama tpm encode proteins participating formation oocyte protein architecture microtubules kinetochore reorganization expression migration regulatory genes investigated study significantly upregulated oocytes ivm conclude may contribute maturational capability porcine oocytes however migration potency cocs accompanied achievement mii stage porcine oocytes vitro investigated genes pld kit lama mapk vegfa tgfbr insr tpm rtn may recognized new marker porcine oocytes maturational competence vitro culture
acrylamide food borne toxicant suspected carcinogenic humans formed heating process starch containing food currently great discussion possible human health risks connected dietary uptake acrylamide haemoglobin adducts acrylamide oxidative metabolite glycidamide markers biochemical effect however glycidamide higher carcinogenic potency acrylamide glycidamide adduct might mirror genotoxicity better acrylamide adducts order gain information human metabolism acrylamide investigated small group persons effective internal doses acrylamide glycidamide using haemoglobin adducts parameters biochemical effect collective subdivided non smokers smokers determining smoking specific acrylonitrile haemoglobin adduct cyanoethylvaline cev mean values adducts acrylamide carbamoylethylvaline aaval glycidamide hydroxy carbamoylethylvaline gaval nonsmokers pmol globin aaval range pmol globin pmol globin gaval range pmol globin smokers mean levels aaval pmol globin range pmol globin gaval pmol globin range pmol globin metabolism glycidamide turned significantly effective nonsmokers higher exposed smokers compared studies rats metabolic conversion acrylamide glycidamide measured haemoglobin adducts seems occur similar extent humans rats risk estimations acrylamide based experimental data obtained rats obviously overestimate cancer risk general population furthermore results might indicate dose response curve acrylamide linear would line results animal experiments rodents
language purely cultural phenomenon somehow isolated wider environment may understand origins evolution seriously considering embedding environment well multimodal nature environment understand aspects culture communication technology attitudes towards language contact etc physical environment ultraviolet light incidence air humidity etc biological infrastructure language speech specifically concerned paper latter form biases constraints affordances anatomy physiology vocal tract create speech language nutshell argument appreciated amount inter individual variation vocal tract anatomy physiology variation non randomly distributed across populations results systematic differences phonetics phonology languages relevant differences anatomy include overall shape hard palate shape alveolar ridge relationship lower upper jaw mention data offer new way systematically explore differences potential impact speech differences generate small biases nevertheless amplified repeated use transmission language affecting language diachrony resulting cross linguistic synchronic differences moreover type biases processes might played essential role emergence evolution language might allow glimpse speech language extinct humans example reconstructing anatomy parts vocal tract fossil record extrapolating biases find present day humans elsevier ltd rights reserved
galactosemia inborn error galactose metabolism first described von ruess subsequent years seen considerable progress understanding underlying genetics biochemistry condition initial studies concentrated increasing understanding clinical manifestations disease however leloir discovery pathway galactose catabolism enabled scientists notably kalckar link disease specific enzymatic step pathway kalckar work established defects galactose phosphate uridylyltransferase galt responsible majority cases galactosemia however next three decades became clear two forms galactosemia type resulting deficiencies galactokinase galk type iii affected enzyme udp galactose epimerase gale molecular biology approaches applied galactosemia chromosomal locations dna sequences three genes determined studies enabled modern biochemical studies structures proteins determined biochemical studies shown enzymatic impairment often results misfolding consequent protein instability cellular model organism studies demonstrated reduced galt gale activity results increased oxidative stress thus century progress possible conceive improved therapies including drugs manipulate pathway reduce potentially toxic intermediates antioxidants reduce oxidative stress cells use pharmacological chaperones stabilise affected proteins elsevier rights reserved
analysis genome chaetoceros salsugineum nuclear inclusion virus csniv revealed presence six putative open reading frames orfs genome characterized orf encodes putative coat protein polymerase chain reaction pcr using orf gene specific primers amplified single dna band nearly amplified product gel purified cloned sequenced expressed escherichia coli specific antiserum raised recombinant protein used western blotting test whether orf protein csniv coat protein one major csniv protein approximately kda reacted positively antiserum suggesting antiserum specific csniv coat protein matrix assisted laser desorption ionization time flight maldi tof analysis kda structural band revealed peptide sequences matched orf regions csniv expression orf host cells examined constructing cdna library csniv infected cells nucleotide sequences cdna clones complementary various regions csniv orf orf however clones containing orf region identified also northern blotting revealed single transcript indicating orf could transcribed together orf elsevier rights reserved
life cycle leishmania spp face several stress conditions cause dna damages base excision repair plays important role dna maintenance one conserved mechanisms living organisms dna repair trypanosomatids reported old world leishmania species endonuclease leishmania amazonensis cloned expressed escherichia coli mutants defective dna repair machinery submitted different stress conditions showing ability survive comparison triple null mutant parental strain phylogenetic multiple sequence analyses also confirmed lamap belongs endonuclease class proteins
microtia congenital defect affecting external ears appear smaller sometimes malformed describe five generation family isolated bilateral microtia segregating autosomal dominant trait similar features previously observed autosomal dominant family non syndromic microtia hearing loss segregating hoxa nonsense variant hoxa biallelic mutations also described inbreed family autosomal recessive microtia hearing impairment incomplete cleft palate family sequence analysis detected heterozygous protein truncating nonsense variant glu segregating affected individuals absent public databases study confirms role hoxa gene dominant isolated microtia contribute define dysmorphogenetic effect gene ear development
increasing number micrornas mirnas shown play crucial regulatory roles process plant development used high throughput sequencing combined computational analysis characterize mirnaomes ovules wild type upland cotton fiberless mutant fiber initiation comparative mirnaome analysis combined northern blotting race pcr revealed seven fiber initiation related mirnas expressed cotton ovules experimentally validated targets mirnas involved different cellular responses metabolic processes including transcriptional regulation auxin gibberellin signal transduction actin bundles lignin biosynthesis paper describes complex regulatory network consisting mirnas expressed cotton ovules coordinate fiber initiation responses addition novel mirnas two conserved mirnas newly identified nearly doubling number known cotton mirna families total furthermore chromatin remodeling complex subunit pre mrna splicing factor shown first time mirna targets knowledge study first systematic investigation fiber initiation related mirnas targets developing cotton ovule deepening understanding important regulatory functions mirnas cotton fiber initiation
banana musa aaa cavendish subgroup brazil cdna encoding putative rubredoxin like protein mard obtained total rna isolated cold treated banana leaves using rapid amplification cdna ends race technique mard cdna contained nucleotides encoding amino acids open reading frame mard protein showed amino acid identity pyrococcus furiosus rubredoxin chloroplast transit peptide transmembrane region detected terminus terminus respectively deduced amino acid sequence mard gene southern blotting revealed occurrence least two copies mard banana genome real time quantitative pcr analysis revealed expression mard gene mainly leaves pseudo stems immature fruits barely detectable roots flowers cold salt stresses induced higher levels mard transcript accumulation leaves finding indicated role mard response abiotic stresses
aim hepatocellular carcinoma hcc sixth common malignancy worldwide liver largest human digestive gland abundant golgi apparatus involved cell division migration apoptosis others methods present study golgi apparatus hcc surrounding liver tissues isolated sucrose density gradient centrifugation identified electron microscopy enzymology methods using gel electrophoresis mass spectrometry differentially expressed protein golgi apparatus hcc surrounding liver tissue screened identified mascot database results differentially expressed proteins six upregulated downregulated related biological processes protein sorting glycosylation cell cycle regulation transcription regulation golgi integrity one protein annexin verified upregulated hcc western blot conclusion differentially expressed proteins may provide new insight hcc biology potential diagnostic therapeutic biomarkers
discuss human metabolism system using theory stochastic differential equations sdes reflecting boundary conditions investigate distribution process determined sdes relation deterministic model introduced nordberg kjellstrom stochastic model considered numerical computations also given
human mesenchymal stem cells hmscs attracted much attention tissue repair wound healing self renewal capacity multipotentiality order mediate effective therapy substantial numbers cells required necessitates extensive sub culturing expansion hmscs throughout vivo expansion cells undergo telomere shortening critically short telomeres trigger loss cell viability telomeres nucleoprotein structures cap ends chromosomes serve protect dna degradation occurs due end replication problem eukaryotes hmscs finite ability self renewal like somatic cells assaying telomere length hmscs provides critical information replicative capacity cells important criterion selection hmscs therapy telomere length generally quantified southern blotting fluorescence situ hybridization recently pcr based methods describe quantification hmsc telomere length real time pcr results demonstrate effect telomere shortening proliferation clonogenicity hmscs thus assay constitutes useful tool determination relative telomere length hmscs elsevier rights reserved
aim identify effects interleukin retinal pigment epithelial rpe cells level aqueous humor age related macular degeneration amd patients methods levels aqueous humor specimens amd patients detected enzyme linked immunosorbent assay elisa arpe cells treated cell proliferaton evaluated mts method mrna protein levels alpha sma evaluated quantitative real time polymerase chain reaction qrt pcr western blot respectively expression tumor necrosis factor alpha tnf alpha transforming growth factor beta tgf beta vascular endothelial growth factor vegf assessed elisa results levels aqueous humor patients amd significantly higher control vitro high concentrations inhibited arpe cell proliferation sma mrna arpe cell increased decreased treated protein expression sma also showed tendency sma significantly reduced level tnf level tgf significantly increased expressions vegf change treatment conclusion vitro inhibit arpe cell proliferation expression aqueous may associated amd
sphingosine kinase sphk oncogenic kinase responsible phosphorylation sphingosine sphingosine phosphate mounting evidence suggests sphk serves crucial role proliferation development variety human cancer cells however role sphk hepatocellular carcinoma hcc fully elucidated therefore expression sphk examined formalin fixed paraffin embedded hcc tissues using immunohistochemistry clinical implications prognostic significance analyzed result expression sphk hcc tissue revealed significantly higher normal tissue addition sphk expression significantly associated tumor size tumor stage histological differentiation patients low sphk expression higher overall survival recurrence free survival rates compared patients high sphk expression furthermore sphk specific shrna used downregulate expression sphk hcc cell lines including hepatoblastoma hcc crispr cas based transcription activation system used upregulate sphk expression normal live cell cell proliferation mrna expression protein expression measured using cell counting kit reverse transcription polymerase chain reaction western blot analysis transfected cells best knowledge present study provides first evidence sphk promotes hcc cell proliferation involved tumor progression notably data presented suggest sphk may potential independent prognosis biomarker treatment hcc
although hammerhead ribozyme hhrz long used model system field ribozyme enzymology several details mechanism still well understood particular significant questions remain concerning disposition role catalytic metals hhrz previous metal rescue experiments using minimal hhrz resulted prediction catalytic metal bound site ground state reaction bridges scissile phosphate along reaction pathway native extended hhrz constructs contain tertiary contacts stabilize compact structure moderate ionic strength performed rescue experiments extended hhrz schistosoma mansoni using stereo pure scissile phosphorothioate substituted substrates order determine whether metal ion makes contact scissile phosphate ground state along reaction coordinate inhibition rescue thiophilic specific stereoisomer scissile phosphate affinity rescuing measured two different ionic strength backgrounds increased fourfold fold pro oxygen replaced sulfur data support model rescuing metal ion makes ground state interaction scissile phosphate native hhrz resulting model activation hhrz places metal ion contact scissile phosphate may provide ground state electrostatic activation substrate
several previous studies outlined importance histone deubiquitinase mysm regulation stem cell quiescence haematopoiesis study investigated role mysm cell development using mouse models allow conditional mysm ablation late stages thymic development found mysm intricately involved maintenance activation survival cells mysm ablation resulted twofold reduction cell numbers also led hyperactivated cell state accompanied impaired proliferation increased pro inflammatory cytokine production vivo stimulation phenotypes coincided increased apoptosis preferential regulation tumour suppressor protein cells lastly examined model experimental cerebral malaria pathology critically dependent cells mice conditionally deleted mysm cell compartment cell numbers remained reduced following infection periphery brain mice displayed improved survival parasite challenge collectively data identify mysm novel factor cells immune system increasing understanding role histone deubiquitinases cytotoxic cell biology
background previously shown genetically induced smooth muscle cell smc cycle reentry transgenic mouse models expressing antigen tag resulted adaptive arterial remodeling present investigation targeted vitro expression pattern collageneous matrix associated tag induced smc cycle modulation methods smc cultures established transgenic model expressing temperature sensitive tag allowed inducible transgene expression permissive temperature degrees compared restrictive temperature degrees distinguish transgene effect temperature effect smcs constitutively expressed tag used controls data obtained using array technology northern blotting reverse transcription polymerase chain reaction zymography results tag induced smc cycle reentry resulted significant regulation matrix metalloprotemase mmp whereas nimp influenced addition smc cycle reentry resulted significantly increased rna levels procollagen alpha procollagen alpha procollagen alpha whereas procollagen alpha iii procollagen alpha viii regulated studies rna expression levels granulocyte macrophage colony stimulating factor revealed regulation proinflammatory matrix modulating cytokine conclusions transgenic model provides evidence tag induced cell cycle reentry associated complex modulation collageneous matrix factors identified vitro study reveal comprehensive expression pattern candidates might allow vessel undergo adaptive arterial remodeling vivo conditions results give rise investigations elaborate hypothesis improve understanding role factors vascular diseases elsevier inc rights reserved
cysteine final product reductive sulfate assimilation pathway bacteria plants serves precursor sulfur containing biological compounds methionine adenosyl methionine iron sulfur clusters glutathione moreover several microorganisms cysteine plays role reducing agent eventually counteracting host oxidative defense strategies cysteine synthesized plp dependent acetylserine sulfhydrylase dimeric enzyme belonging fold type catalyzing beta replacement reaction review spectroscopic properties catalytic mechanism three dimensional structure conformational changes accompanying catalysis determinants enzyme stability role selected amino acids catalysis regulation enzyme activity ligands interaction serine acetyltransferase preceding enzyme biosynthetic pathway described given key biological role played acetylserine sulfhydrylase bacteria inhibitors potential antibiotic activity developed article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
paper describes method device current permanent observation driver response road traffic described task presented system line analysis human behavior primarily determination physiological changes fuzzy classification order determine states considered sub critical article based authors research results experiments related international scientific state art terms excessive fatigue aggression essential biocybernetic factors increasing road accident risk variant warning system notification driver psychophysical condition changes presented system based revised analysis human metabolism monotonous long term load results simulations real measurements prerequisites development presented system structure
harnessing immune system eradicate malignant cells becoming powerful new approach cancer therapy fda approval immunotherapy based drugs sipuleucel provenge ipilimumab yervoy anti ctla recently programmed cell death antibody pembrolizumab keytruda treatment multiple types cancer greatly advanced research clinical studies field cancer immunotherapy furthermore recent clinical trials using eso specific cell receptor tcr chimeric antigen receptor car shown promising clinical results patients metastatic cancer current success cancer immunotherapy built upon work cancer antigens inhibitory signaling molecules identified years ago among large numbers target antigens best target car cell therapy blood cancer car engineered cell immunotherapy yet work solid cancer eso one best targets tcr based immunotherapy solid cancer despite great success checkpoint blockade therapy cancer patients fail respond blockade therapy advent new technologies next generation sequencing enhanced ability search new immune targets onco immunology accelerated development immunotherapy potentially broader coverage cancer patients review discuss recent progresses cancer immunotherapy novel strategies identification new immune targets mutation derived antigens neoantigens cancer immunotherapy immunoprecision medicine
background last years investigators debated role infectious agents may sarcoidosis pathogenesis emergence new molecular biology techniques several studies conducted therefore performed meta analysis order better explain possible association methods review conducted accordance preferred reporting items systematic reviews meta analyses prisma statement cochrane collaboration guidelines four different databases medline scopus web science cochrane collaboration searched original articles published present meta analysis included case control studies reported presence microorganisms samples patients sarcoidosis using culture methods molecular biology techniques used random effects fixed effect model calculate odds ratio confidence intervals sensitivity subgroup analyses performed order explore heterogeneity among studies results fifty eight studies qualified purpose analysis present meta analysis first knowledge evaluation infectious agents proposed associated sarcoidosis involving patients several countries suggests etiological link propionibacterium acnes sarcoidosis also found significant association sarcoidosis mycobacteria borrelia hhv well rickettsia helvetica chlamydia pneumoniae epstein barr virus retrovirus although suggested previous investigations associated sarcoidosis conclusion meta analysis suggests infectious agents associated sarcoidosis seems clear one infectious agent might implicated pathogenesis sarcoidosis probably patient geographical location might dictate microorganisms involved future investigations clinical trials need bring evidences global level
advances forensic identification using molecular genetics helpful resolving historical mysteries aim study confirm authenticity shrunken head artifacts exhibited two polish museums shrunken heads known tsantsas headhunting trophies south american indians jivaroan special preparation preserved hair facial appearance however quite common offer counterfeit shrunken heads sloths monkeys collectors curiosities sampled small skin specimens four shrunken head skin museum collection warsaw krakow poland following genomic dna isolation highly polymorphic short tandem repeats genotyped using commercial chemistry dna sequencing analyzer haplogroups human chromosome identified obtained informative genetic profile genomic short tandem repeats samples shrunken heads moreover amplification amelogenin loci allowed sex determination four studied shrunken heads human origin two ones shared chromosome haplogroup characteristic indigenous americans detected another artifact counterfeited chromosome haplogroup found characteristic southeastern european origin commercial genetic methods identification applied successfully studies origin authenticity unusual collection items
better memory positive information compared negative neutral information repeatedly associated successful aging main psychological explanations called positivity effect memory principally rely emotional motivational cognitive mechanisms make older adults cognition highly sensitive positive information according ultimate goals well however emerging evidence also delineates genetic profile positivity effects memory may render older adults prone others encoding remembering positive memories first present brief overview behavioral neuroimaging studies positivity effect aging subsequently report studies candidate genes associated positive memories particular review work date several candidate genes sensitive stimulus valence adrab comt httlpr finally propose future approach study genetic correlates positivity effects memory also include mitochondrial functioning tomm altogether study genetics cell biology positivity effects memory help reveal underlying bottom pathways positive affect healthy aging elsevier inc rights reserved
aim work elucidate immunopathological mechanisms helminths may influence course viral infection using murine model severe virulence relevant increase virus titres lung higher mortality rate observed ascaris vaccinia virus vacv infected mice compared vacv mono infected mice immunopathological analysis suggested ablation cells marked reduction circulating cells producing ifn gamma robust pulmonary inflammation associated increase morbidity mortality infection subsequently negative impact concomitant pulmonary ascariasis respiratory vacv infection host hand evaluating impact infection parasitic burden infected mice presented marked decrease total number migrating ascaris lung stage larvae comparison ascaris mono infettion taken together major findings suggest ascaris vacv infection may potentiate virus associated pathology modulation vacv specific immune response moreover study provides new evidence helminth parasites may influence course coincident viral infection australian society parasitology published elsevier ltd rights reserved
background comprehensive evaluation associations susceptibility norovirus infections histo blood group antigens available taiwanese population nonsecretor phenotype absent methods matched case control study conducted northern taiwan february december epidemic norovirus infection occurred cases children years old hospitalized diarrhea found laboratory confirmed norovirus infections controls healthy children matched cases age gender norovirus genotype determined polymerase chain reaction sequencing gene secretor status lewis antigen abo type determined characterization genetic polymorphisms fut fut abo genes respectively results total case control pairs included gii sydney strain major genotype identified cases weak secretor lewis positive genotypes less commonly identified cases controls respectively multivariate analysis revealed secretor lewis negative genotypes independent factors associated increased risk norovirus infections matched odds ratio confidence interval conclusion weak secretor genotype lewis antigen positive genotype protective factors severe norovirus gastroenteritis gii sydney strain epidemic taiwan
objective severe complication sle non invasive biomarkers needed identifying patients risk renal flare differentiating proliferative non proliferative forms assessing prognoses methods assessed link blood transcriptional signatures using blood samples patients biopsy proven extra renal sle flares quiescent sle healthy controls control patients glomerular diseases bacterial sepsis included modular repertoire analyses microarray data confirmed pcr results modular neutrophil signature upregulation module present sle patients strongly associated activity stronger extra renal flares neither correlated ifn modules sledai anti dsdna antibodies moderately dose activity associated severity stronger proliferative decreased patients responding treatment activation caused higher dose correlated moderately neutrophil count also observed among quiescent patients among quiescent patients past history higher activity activation present patients bacterial sepsis anca associated vasculitis patients glomerular diseases overall activation associated past present future flares conclusion modular neutrophil signature could biomarker stratifying risk monitoring response treatment
purpose identify rna missplicing events human corneal endothelial tissue isolated fuchs endothelial corneal dystrophy fecd methods total rna isolated sequenced corneal endothelial tissue obtained keratoplasty patients fecd patients undergoing keratoplasty enucleation indications length trinucleotide repeat tnr ctg transcription factor tcf gene determined using leukocyte derived dna analyzed combination southern blotting genescan analysis commercial statistical software used quantify expression alternatively spliced genes validation selected alternative splicing events performed using pcr gene sets identified analyzed overrepresentation using web based analysis system results corneal endothelial tissue fecd patients containing ctg tnr expansion sequence tcf gene revealed widespread changes mrna splicing including novel splicing event involving fgfr differential splicing numa ppfibp mbnl mbnl transcripts identified fecd samples containing tnr expansion differentially spliced genes enriched products localize cell cortex bind cytoskeletal cell adhesion proteins conclusions corneal endothelium fecd patients harbors unique signature missplicing events due ctg tnr expansion tcf gene consistent hypothesis rna toxicity contributes pathogenesis fecd changes endothelial barrier function known event development fecd identified key biological process influenced missplicing events
changes expression hepatocyte membrane transporters advanced fibrosis decrease hepatic transport function organic anions aim study assess changes evaluated pharmacokinetic analysis hepatobiliary transport contrast agent gadoxetate dynamic gadoxetate enhanced mri performed rats advanced fibrosis normal rats deconvolution hepatocyte three compartmental analysis performed calculate hepatocyte influx biliary efflux sinusoidal backflux rates expression oatpa mrp mrp organic anion membrane transporters assessed reverse transcription polymerase chain reaction rats advanced fibrosis influx efflux rates gadoxetate decreased backflux rate increased significantly respectively significant correlations found influx oatpa expression biliary efflux mrp sinusoidal backflux mrp results show changes bidirectional organic anion hepatocyte transport function rats advanced liver fibrosis assessed compartmental analysis gadoxetate enhanced mri aeuro cent expression hepatocyte transporters modified rats advanced liver fibrosis aeuro cent kinetic parameters gadoxetate enhanced mri correlated hepatocyte transporter expression aeuro cent hepatocyte transport function assessed compartmental analysis gadoxetate enhanced mri aeuro cent compartmental analysis gadoxetate enhanced mri might provide biomarkers advanced liver fibrosis
nadph dependent human carbonyl reductase hcbr member short chain dehydrogenase reductase protein family plays important role ubiquitous metabolism endogenous xenobiotic carbonyl containing compounds glutathione gsh also cofactor hcbr however role carbonyl reductase function enzyme still unclear study presented crystal structure hcbr complex gsh absence substrates inhibitors interestingly found gsh molecule presents configuration quite different previously reported substrate binding hcbr structure indicates gsh contributes substrate selectivity hcbr protects catalytic center hcbr switch like mechanism isothermal titration calorimetry enzymology data shows gsh directly binding hcbr substrate exist enzymology data also shows gsh protects nadph attacked oxidative small molecules first time gsh found demonstrate functions enzyme crystal structure succeeds providing critical insights substrate selectivity hcbr interaction hcbr gsh elsevier inc rights reserved
preclinical studies heregulin hrg expression shown relevant predictive biomarker response patritumab fully human anti epidermal growth factor receptor monoclonal antibody support phase study erlotinib patritumab non small cell lung cancer nsclc reverse transcription quantitative polymerase chain reaction qpcr assay relative quantification hrg expression formalin fixed paraffin embedded ffpe nsclc tissue samples developed validated described herein test specimens included matched ffpe normal lung nsclc frozen nsclc tissue hrg positive hrg negative cell lines formalin fixed paraffin embedded tissue examined functional performance heregulin distribution also analyzed across nsclc commercial samples applied biosystems taqman gene expression assays run bio rad cfx real time pcr platform heregulin qpcr assay specificity pcr efficiency pcr linearity reproducibility demonstrated final assay parameters included qiagen ffpe rna extraction kit rna extraction ffpe nsclc tissue rna input reference housekeeping genes hmbs ipo eifb expression levels similar hrg expression levels stable among ffpe nsclc samples using validated assay unimodal hrg distribution confirmed across evaluable ffpe nsclc commercial samples feasibility rtqpcr assay quantification hrg expression ffpe nsclc specimens demonstrated
strains pseudomonas produce antimicrobial metabolites control soilborne plant diseases often isolated soils defined disease suppressive soils specific plant pathogens present plants show reduced disease symptoms moreover assumed pseudomonads producing antimicrobial compounds diacetylphloroglucinol dapg phenazines phz contribute specific disease resistance suppressive soils however pseudomonads producing antimicrobial metabolites also present soils conducive disease currently still unknown whether extent abundance antimicrobials producing pseudomonads related general disease resistance common agricultural soils moreover virtually nothing known conditions pseudomonads express antimicrobial genes agricultural field soils present results first side side comparison representative swiss agricultural soils cereal oriented cropping history resistance two soilborne pathogens abundance pseudomonas bacteria harboring genes involved biosynthesis antimicrobials dapg phz pyrrolnitrin roots wheat iii ability support expression genes roots study revealed level soil disease resistance strongly depends type pathogen soils highly resistant gaeumannomyces tritici often highly susceptible pythium ultimum vice versa significant correlation disease resistance soils abundance pseudomonas bacteria carrying dapg phz pyrrolnitrin biosynthetic genes ability soils support expression antimicrobial genes correlation analyses indicated certain soil factors silt clay macro micronutrients influence abundance expression antimicrobial genes taken together results study suggests pseudomonads producing dapg phz pyrrolnitrin present abundant swiss agricultural soils soils support expression respective biosynthetic genes bacteria various degrees precise role pseudomonads play general disease resistance investigated agricultural soils remains elusive
ebolaviruses highly dangerous pathogens exhibiting extreme virulence humans nonhuman primates majority ebolavirus species notably zaire ebolavirus cause ebola virus disease evd formerly known ebola hemorrhagic fever humans evd associated case fatality rates high currently specific treatment licensed vaccine available evd understanding molecular biology pathogenesis ebolaviruses important development antiviral therapeutics ebolavirus encodes several forms glycoproteins gps interesting characteristics including transcriptional editing coding strategy extensive glycosylation modification clustered mucin like domain full length shed addition canonical role spike protein viral entry ebolavirus gps appear multiple additional functions likely contributing complex pathogenesis virus review roles ebolavirus gps viral pathogenesis
statins lipid lowering agents prevention atherosclerosis fatal coronary heart diseases pleiotropic modalities function physiology vascular smooth muscle include anti contractile pro apoptotic effects effects suggested stem inhibition small gtpase rho largely regarded distinct unrelated recently discovered simvastatin causes contractile dysfunction apoptosis vascular smooth muscle cells vsmcs reflecting may closely related yet connecting link remains unexplained elaborated mechanism underlying simvastatin induced apoptosis normal vsmcs connection contractile dysfunction repeated oral administration simvastatin rats vivo resulted contractile dysfunction apoptosis vascular smooth muscle pattern well reproduced rat vsmcs vitro note contractile dysfunction apoptosis occurred concerted manners vivo vitro aspects time course dose exposure rat vsmcs simvastatin impaired activation small gtpases rhoa along rac resulted disruption actin integrity pivotal factor generation contractile force survival vsmcs line disruption actin integrity bmf proapoptotic factor bound intact actin dissociated translocated mitochondria corresponded well dissipation mitochondrial membrane potential caspase activation ultimately apoptosis events rescued actin stabilisation agent jasplakinolide well geranylgeraniol indicating damages actin integrity disrupted activation rhoa rac lies center simvastatin induced contractile dysfunction apoptosis vascular smooth muscle
knowledge genetic diversity population structuring represents key component conservation endangered species especially translocations introduction operations integral tools population management blue duck hymenolaimus malacorhynchos threatened riverine specialist endemic new zealand populations north south island form two distinct mitochondrial lineages currently necessitate separate conservation management examine patterns variability microsatellite loci mitochondrial control region data assess range wide genetic diversity population structure blue duck data suggest north south island blue duck populations likely diverged late pleistocene limited gene flow strongly reinforcing current management strategy avoid translocation islands genetic diversity within islands follows pattern isolation distance relatively high levels gene flow among populations likely driven male juvenile dispersal overall genetic diversity blue duck low effective population size small data provide important information conservation management species
according brazilian association organ transplants bone transplants performed brazil dental surgeons surgical technique respectable number reports regarding clinical efficacy measured long term survival dental implants grafted areas uncertainty remains however whether fresh frozen grafts human bone donors remain immunologically innocuous body host six male previous medical history note including systemic diseases surgery blood transfusion selected patients underwent reconstructive procedures sinus lifting using fresh frozen human bone tissue bank patients venous blood samples collected prior surgery months procedure anti hla analysis detection hla human leukocyte antigen antibodies performed using methods lab screen pra class class lab screen single antigen class class luminex platform reactive individuals screening tests lab screen pra investigated determine specificity antibodies detected lab screen single antigen cutoff value median fluorescence intensity result observed two patients positive screening tests one presenting anti hla class sensitization anti hla class specificity analysis showed patients sensitized hla class presented specificities immunologically relevant second individual specificities identified immunologically important hla class specificities hla class immunologically important specificities detected average fluorescence findings suggestive sinus lifting procedures allogeneic bone induce immunological sensitization
breast cancer frequent cancer among women worldwide tumor immunology suggests relationships immune system chronic inflammation cancer immune system may either prevent promote carcinogenesis evaluated molecular signaling pathways common inflammation cancer detected micrornas play pivotal roles mediating pathways using bioinformatics assays signaling pathways common inflammation cancer micrornas mediating pathways identified mir selected cloned plenti iii egfp vector transfected breast cancer cell lines expression level microrna candidate genes evaluated real time quantitative reverse transcription polymerase chain reaction apoptosis level transfected cells measured annexin aad assay cell migration tested real time quantitative reverse transcription polymerase chain reaction mmp mmp expression levels mir selected genes jak pik mapk creb measured transfection mir showed expression genes significantly regulated significant increase observed apoptosis level cell lines mmp mmp significantly decreased mda cells mir selected microrna triggers regulates critical genes signaling pathways similar cancer inflammation following mir treatment jak pik mapk creb regulated apoptosis level increased breast cancer cell lines apparently micrornas good candidates novel treatments cancer although mir showed good results study studies required investigate role mir breast cancer therapy
study calmodulin cam signal transduction pathway gracilaria lemaneiformis heat stress peptidase denoted metalloprotease lemaneiformis glmp calmodulin binding protein lemaneiformis screened using yeast two hybrid system full complementary dna cdna genomic dna encoding glmp obtained using rapid amplification cdna ends race genome walking techniques respectively dna sequence glmp consisted nucleotides containing open reading frame orf nucleotides intron nucleotides orf isolated glmp predicted encode amino acids including zinc metalloprotease hexxh consensus motif characteristic glmp southern blotting indicated two copies glmp lemaneiformis yeast two hybrid results showed expressed glmp could interact cam proving glmp type calmodulin binding protein next transcription cam glmp lemaneiformis analyzed using real time polymerase chain reaction pcr heat shock degrees expression level displayed cyclical upward trend results indicate glmp cam may play important roles high temperature tolerance lemaneiformis
social environment modulates gene expression physiology behaviour patterns inheritance years concept investigated using approaches include partitioning social component behavioural heritability estimates studying maternal effects offspring analysing dominance hierarchies recent advances formalized social environment effect providing nuanced approach study social influences behaviour recognizing evolutionary implications yet formulations dynamics social interactions accounted also reciprocity individual behaviour group level interactions largely ignored consistent evolutionary theory principles social interaction conserved across broad range taxa noting parallels diverse organisms review uses drosophila melanogaster case study revisit known social interaction paradigms highlight benefits integrating history pattern interactions among individuals dissecting molecular mechanisms underlie social modulation behaviour
evolutionarily conserved protein kinase mediates innate resistance environmental stress microbial infection four isoforms exist mammals may opted new roles adaptive immunity murine cells deficient ubiquitously expressed isoform showed readily apparent cell autonomous defects expressing elevated amounts another isoform mice cells simultaneously lacking displayed lymphoid atrophy elevated foxp regulatory cell frequencies double deficiency naive cells resulted attenuation mapk activated protein kinase dependent mtor signaling cell receptor engagement enhanced differentiation regulatory cells appropriate inducing conditions pharmacological inhibition mtor signaling module produced similar effects revealing potential therapeutic applications
dopamine plays significant role function human metabolism important develop sensitive sensor determination dopamine without interference ascorbic acid paper reports synthesis graphene using modified hummer method application electrochemical detection dopamine electrochemical measurements performed glassy carbon electrode modified graphene via drop casting method cyclic voltammogram ferri ferrocyanide redox couple graphene modified electrode showed increased current intensity compared glassy carbon electrode graphite modified electrode decrease charge transfer resistance also analyzed electrochemical impedance spectroscopy capacity graphene modified electrode selective detection dopamine confirmed sufficient amount ascorbic acid observed linear range determination dopamine concentration detection limit estimated elsevier rights reserved
objectives master philosophy mphil physiological sciences describe new ways anatomy biochemistry physiology one hand microbiology pathology pharmacology hand meet functional requirements multidisciplinary integrated concepts elucidate relationships cell biology molecular biology molecular genetics connecting dots cell functions driven molecules controlled genes forms basis cell molecular genetics cmg module upon multidisciplinary modules physiological sciences follow credit hours provide physiological basis phd studies well faculty development enhance learning abilities medical student modules constitute cardio respiratory physiological sciences renal physiological sciences neurosciences endo reproductive physiological sciences integrated microbiology pathology pharmacology unique way cmg microbes leading associated pathology mechanisms prescribed drugs additional synopsis thesis friendly course work leading comprehensive examinations year two deals research work credit hours leading defense thesis mphil physiological sciences fundamentally different offered elsewhere prepares offers good spring board dovetail phd studies well faculty institutional development first study deals innovative programmes research learning education field physiological sciences broad based mphil would make recipients competent critical confident productive learner completely unique design curriculum comparable examples elsewhere mission educate graduate students field physiological sciences complete grasp broad based integrated concepts basic health sciences upon completion education students able use duality imagination skepticism hence students contribute fields unfolding creative energy
medical biochemistry usual name clinical biochemistry clinical chemistry serbia medical biochemist official name clinical chemist clinical biochemist largest sub discipline laboratory medicine serbia includes aspects clinical chemistry also laboratory hematology coagulation immunology etc medical biochemistry laboratories serbia medical biochemists profession part health care system activities regulated health care law rules issued chamber medical biochemists serbia first continuous organized education medical biochemists clinical chemists serbia dates department medical biochemistry established pharmaceutical faculty belgrade faculty five years undergraduate study program established educating medical biochemists special program since academic year new five year undergraduate according bologna declaration four year postgraduate program according european syllabus postgraduate training clinical chemistry laboratory medicine established ministry education ministry public health accredited programs four requirements practicing medical biochemistry health care system university diploma faculty pharmacy study medical biochemistry successful completion professional exam ministry health completion one additional year obligatory practical training medical biochemistry laboratories membership serbian chamber medical biochemists licence skilled work issued serbian chamber medical biochemists order present laboratory medical biochemistry practice serbia paper focused following serbian national legislation healthcare services organization sub disciplines laboratory medicine medical biochemistry significant education medical biochemistry conditions professional practice medical biochemistry continuous quality improvement accreditation serbian healthcare based fundamental principles universal health coverage solidarity citizens
large superfamily enzymes identified make use radical intermediates derived reductive cleavage adenosylmethionine primary nature radical intermediates makes highly reactive potent oxidants used initiate biotransformations hydrogen atom abstraction process allows particularly diverse range substrates functionalized including substrates relatively inert chemical structures first part review discuss evidence supporting mechanism radical formation adenosylmethionine second part review examine potential reaction products arising adenosylmethionine cause product inhibition effects product inhibition kinetic studies radical adenosylmethionine enzymes discussed strategies overcome issues reviewed article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
advanced extraction purification techniques found essential tools obtaining sufficient dna bones however case short tandem repeats strs typing failure especially old skeletal remains mitochondrial dna mtdna analysis ultimate solution individual species identification thirty six bone samples collected human remains dna extracted using organic method special sample preparations quantified using real time polymerase chain reaction pcr polymerase chain reaction pcr done using identifier plus pcr amplification kit amplified products typed using genetic analyzer autosomal str typing samples dna concentration efficient obtaining complete str profiles mtdna control region also amplified sequenced mtdna efficient autosomal str profiling discriminating among human bone samples especially low degraded dna content
early dispute existence multiplicity receptors neurotransmitter height several subtypes serotonin receptors proposed basis radioligand binding assays order provide support existence receptors performed quantitative autoradiographic mapping binding several ligands receptor labeling subtypes hta htb htc characterized pharmacologically different receptors results demonstrated differential localization subtypes receptors indicating expressed different cell populations probably neurons brain supporting reality shortly afterwards cloning genes coding receptors many others ended dispute demonstrating different proteins advent molecular biology provided new methodologies study chemical molecular anatomy receptors brain visualizing cells expressing mrna situ hybridization showed family mammalian receptors members figure much larger ever suspected time article part special issue entitled anniversary issue elsevier rights reserved
gut microbiota play key roles host nutrition metabolism however little known relationship host genetics gut microbiota metabolic profiles used high throughput sequencing gas chromatography mass spectrometry approaches characterize microbiota composition metabolite profiles gut five cyprinid fish species three different feeding habits raised identical husbandry conditions results showed host species feeding habits significantly affect gut microbiota composition also metabolite profiles anosim mantel test demonstrated host phylogeny gut microbiota metabolite profiles significantly related additionally carps feeding habits similarity gut microbiota composition metabolite profiles various metabolites correlated positively bacterial taxa involved food degradation results shed new light microbiome metabolite profiles gut content cyprinid fishes highlighted correlations host genotype fish gut microbiome putative functions gut metabolite profiles
heat shock transcription factor hsf regulates heat shock proteins hsps assist protein folding inhibit protein denaturation following stress hsfi firstly cloned orange spotted grouper exists two isoforms one osghsfa one without osghsfb exon heat exposure increased expression osghsflb cold exposure increased osghsfla isoforms mainly expressed brains eyes fins expression osghsfb higher osghsfla development poly lps could also induce osghsf isoforms expression differentially exposure nervous necrosis virus nnv increased level osghsf isoforms cells overexpression osghsf isoforms enhanced viral loads within whereas pharmacological inhibition rna interference hsf reduced virus infection study shows osghsf support early stage virus infection provides new insight molecular regulation osghsf influence temperatures immunity elsevier ltd rights reserved
studying interplay nonribosomal peptide synthetases nrps major source secondary metabolites crucial external modifying enzymes challenging task since interactions involved often transient nature applying range synthetic inhibitor type compounds stabilized complex appropriate structural analysis generated tailoring enzyme nrps domain complex studied comprises nrps peptidyl carrier protein pcp domain bound cytochrome enzyme crucial provision beta hydroxylated amino acid precursors biosynthesis cyclic depsipeptide skyllamycin structure reveals complex formation governed hydrophobic interactions presence controlled minor alterations pcp structure enable selectivity amongst multiple highly similar pcp domains
ginger zingiber officinale rosc prone photoinhibition intense sunlight excessive light dissipated xanthophyll cycle violaxanthin epoxidase vde plays critical role protecting photosynthesis apparatus damage excessive light isolated similar ginger vde gvde gene promoter contained circadian box box box motif histochemical staining arabidopsis indicated gvde promoter active almost organs especially green tissues beta glucuronidase gus activity driven gvde promoter repressed rather activated high light gus activity altered hormones growth regulators abiotic stresses increased dichlorophenoxyacetic acid decreased abscisic acid salicylic acid zeatin salt sodium chloride polyethylene glycol interestingly gus activities gibberellin indole acetic acid increased short term decreased long term analysis flank deletion found two crucial functional regions residing northern blotting analysis found transcription regulated endogenous circadian clock finally found region necessary regulating circadian rhythm another basic promoter activity key message novel promoter named gvde promoter first isolated analyzed study determined one region crucial promoter activity another responsible keeping circadian rhythms
crispr cas self nonself discriminating systems found prokaryotic cells represent remarkable example molecular memory hereditarily transmitted discovery considered one first fruits systematic exploration prokaryotic genomes although genomic feature serendipitously discovered molecular biology studies availability multiple complete genomes shed light role genetic immune system tell story discovery originated slowly painstakingly advanced point understating biological role initially odd genomic feature
enzymatic characterization four group pyridine nucleotide disulfide oxidoreductase pndor homologues thermococcus kodakarensis performed focus coa dependent nad elemental sulfur oxidoreductase nsr nad oxidase nox activities exhibited nsr activity preference nadph showed strict coa dependency similar pyrococcus furiosus homologue assays non enzymatic formation free coa observed addition enzyme nadph enhanced evolution catalytic cycle proposed suggesting coa acted solubilize forming coa persulfides followed reduction enzyme coa intermediate produced enzymatic non enzymatic evolution coa persulfide nadph electron donor showed nsr activity independently coa implying direct reaction exhibited high nox activity nadh dependent activities inhibited addition free coa multiple disruptions four group pndor homologues kodakarensis demonstrated none homologues essential dependent growth many disruptants grew better parent strain multiple disruptants showed decreased growth properties aerobic inoculation pyruvate containing medium without suggesting complicated participation group pndors sensitivity resistance dissolved oxygen absent
background many studies shown short telomere length associated high oxidative stress various age related diseases parkinson disease age related disease although pathogenic mechanism uncertain oxidative stress believed implicated pathology aim case control study assess different markers oxidative stress elderly patients compared age control subjects methods patients age matched controls years studied measured southern blotting dna samples extracted white blood cells superoxide dismutase sod activity plasma levels total glutathione protein carbonyls determined results trend lower patients versus controls significant difference found two groups terms oxidative stress markers controls age main determinant telomere shortening whereas patients telomere shortening mainly dependent plasmatic concentrations carbonyl proteins patients negative association observed plasma carbonyl protein levels sod activity conclusions shorter presence high oxidative stress measured carbonyl protein levels absence telomere attrition age among patients could reflect telomere regulation mechanisms age
blepharospasm sometimes called benign essential blepharospasm beb one common focal dystonias involves involuntary eyelid spasms eye closure increased blinking despite success botulinum toxin injections cases pharmacologic surgical interventions beb treatments completely efficacious symptomatic could develop principled strategies preventing reversing disease knew pathogenesis primary beb objective study develop conceptual framework dynamic circuit hypothesis pathogenesis beb framework extends overarching theory multifactorial pathogenesis focal dystonias peterson incorporate two hit rodent model specifically beb schicatano incorporate framework three features critical cranial motor control joint influence motor cortical regions direct descending projections one basal ganglia output nuclei substantia nigra pars reticulata brainstem motor nuclei nested loops composed trigeminal blink reflex arc long sensorimotor loop fromtrigeminal nucleus thalamus somatosensory cortex back basal ganglia brainstem nuclei modulating reflex arc abnormalities basal ganglia dopamine system provide sensorimotor learning substrate combined patterns increased blinking leads abnormal sensorimotor mappings manifest beb framework explains experimental data trigeminal reflex blink excitability trbe schicatano makes predictions tested new experimental animal models based emerging genetics dystonia including recently characterized striatal specific dopamine transduction alterations caused gnal mutation broadly model provide guide future efforts mechanistically link multiple factors pathogenesis beb facilitate simulations exogenous manipulations pathogenic factors could ultimately used prevent reverse disorder
evidence reviewed supporting presence inherited structural defect plasma membranes somatic cells humans type diabetes mellitus sodium sensitive essential hypertension magnesium binding defect mgbd consists decreased content tightly bound ion cell membrane limits amount enters cell combines atp produced cell form mgatp currency metabolic energy consequently prediabetes overt diabetes intracellular concentration interdependent mgatp ions significantly less normal ions required cofactors substrates enzyme systems human metabolism many involved insulin thus decreased activities particular ones enzyme systems due decreased intracellular dependent mgatp responsible insulin resistance decreased insulin secretion production patho physiological processes required occurrence type diabetes mellitus processes account morbid symptoms associated disease thus decreased intracellular concentration interdependent mgatp ions constitutes etiology genetic predisposition type diabetes mellitus corrected identified peptide binding promoters derived carboxyl terminal tachykinin substance occur normal blood plasma decreased intracellular mgatp also result dietary deficiency magnesium abnormal accumulation saturated fatty acids cell membranes inhibits entrance cell thus also etiology diabetes caused magnesium deficiency also lipotoxic type diabetes mellitus although pathologies corrected binding promoters corrected respectively dietary magnesium supplementation exercise plus dietary caloric lipid restriction theoretically disease syndrome containing type diabetes mellitus may involve approximately population
selective forces give rise rapid inter intraspecific divergence snake venoms also favor differences venoms across life history stages ontogenetic changes venom composition well known widespread snakes investigated level unambiguously identifying specific loci involved eastern diamondback rattlesnake previously shown undergo ontogenetic shift venom composition sexual maturity shift accounted venom variation geography characterize genetics underlying ontogenetic venom compositional change adamanteus sequenced adult juvenile pairs venom gland transcriptomes five populations previously shown different adult venom compositions identified total putative toxin transcripts adamanteus involved ontogenetic change three toxins downregulated nine upregulated adults relative juveniles adults juveniles expressed similar total levels snake venom metalloproteinases differed substantially featured paralogs adults expressed higher levels bradykinin potentiating type natriuretic peptides nerve growth factor specific paralogs phospholipases snake venom serine proteinases juvenile venom toxic mice indicating expression differences resulted phenotypically therefore potentially ecologically significant difference venom function also showed adult juvenile venom gland transcriptomes species known ontogenetic venom variation equally effective individually providing full characterization venom genes species particular individual likely lack several toxins transcriptome full characterization species venom gene complement therefore requires sequencing one individual although ages individuals unimportant
lung cancer deadliest among cancers men women early detection premalignant lesions tumors appears promising approach reducing morbidity mortality lung cancer survival early stage lung cancer patients better patients advanced cancers approached identification early biomarkers human lung carcinogenesis combining use cdna array vitro human lung carcinogenesis model consists normal nhbe immortalized beas transformed tumorigenic human bronchial epithelial hbe cells hypothesized certain genes expressed differentially among cells serve biomarkers early detection targets intervention nineteen genes downregulated six upregulated tumorigenic hbe cells compared normal hbe cells nhbe using cdna array downregulated genes encode cell cell cell matrix adhesion related proteins calcium binding proteins enzymes growth factor related proteins functions upregulated gene variable similar expression selected genes found different nonsmall cell lung cancer cell lines analyzed northern blotting furthermore differential expression genes also observed silico analysis database human lung tumors differentially expressed genes encode calcium binding proteins cell cell cell matrix adhesion proteins furthermore northern blotting analysis rna different cell lines comprising vitro carcinogenesis model including normal immortalized transformed tumorigenic cells indicated expression subsets identified genes changed different stages carcinogenesis data show vitro carcinogenesis cell system could useful discovering potential biomarkers early late stages lung carcinogenesis targets chemoprevention
although originally developed predicting transfusion outcomes serologically incompatible blood monocyte monolayer assay mma highly versatile vitro assay modified examine different aspects antibody gamma receptor gamma mediated phagocytosis research clinical settings assay utilizes adherent monocytes peripheral blood mononuclear cells isolated mammalian whole blood mma described use human murine investigations monocytes express gamma gamma gamma riia gamma riib gamma riiia involved immune responses mma exploits mechanism gamma mediated interactions phagocytosis particular antibody sensitized red blood cells rbcs adhere activate gamma subsequently phagocytosed monocytes vivo primarily tissue macrophages found spleen liver carry gamma mediated phagocytosis antibody opsonized rbcs causing extravascular hemolysis evaluating level phagocytosis using mma different aspects vivo gamma mediated process investigated applications mma include predicting clinical relevance allo autoantibodies transfusion setting assessing candidate drugs promote inhibit phagocytosis combining assay fluorescent microscopy traditional western immunoblotting investigate downstream signaling effects gamma engaging drugs antibodies limitations include laboriousness technique takes full day start finish requirement research ethics approval order work mammalian blood however diligence adequate training mma results obtained within turnover time
hydroxycinnamic acids antioxidant phenolic compounds widespread plant foods contribute significantly total polyphenol intakes absorbed humans extent putative health benefit vivo depends largely bioavailability however mechanisms absorption metabolism phenolic compounds described study used vitro caco model human small intestinal epithelium investigate metabolism major dietary hydroxycinnamates ferulate sinapate coumarate caffeate diferulates appearance metabolites medium versus time monitored various conjugates derivatives produced identified hplc dad enzyme treatment beta glucuronidase sulfatase enterocyte like differentiated caco cells extra intracellular esterases able esterify hydroxycinnamate diferulate esters addition intracellular udp glucuronosyltransferases sulfotransferases existing caco cells able form sulfate glucuronide conjugates methyl ferulate methyl sinapate methyl caffeate methyl coumarate however sulfate conjugates free acids ferulic acid sinapic acid coumaric acid detected methylated derivatives ferulic isoferulic acid metabolites detected following incubation caco cells caffeic acid results show vitro model system differentiated caco cells capacity metabolize dietary hydroxycinnamates including various phase esterification phase glucuronidation sulfation methylation reactions suggests human small intestinal epithelium plays role metabolism bioavailability phenolic compounds
living organisms independently invade new environment evolution similar phenotypic traits often observed interesting contentious issue whether underlying molecular biology also converges new habitat independent invasions tropical intertidal zones woody plants collectively referred mangrove trees represent dramatic examples high salinity hypoxia stressors new habitatmight affected genomic features protein structures developed new method detecting convergence conservative sites ccs applied genomic sequences mangroves simulations ccs method drastically reduces random convergence rapidly evolving sites well falsely inferred convergence caused misinferences ancestral character mangrove genomes estimated similar genes experienced convergence background level convergence nonmangrove relatives convergent genes enriched pathways related stress response embryo development could important mangroves adaptation new habitat
cell culture models hepatitis virus hbv remain mainstay screening testing efficacy anti hepatitis virus agents gradient based ultracentrifugation followed southern blotting used hepatitis virion estimation cell culture method several limitations report development assay using commercially available hbsag elisa plate immunocapture followed real time pcr quantification hepatitis virions cell cultures assay rapid highly sensitive copies reaction highly specific virion associated dna addition assay requires supernatant allowing scaling transfections
meiosis key event sexual life cycles eukaryotes mechanistic details uncovered several model organisms essential features received various often contradictory evolutionary interpretations perspective present overview often weird features discuss origin meiosis origin ploidy reduction recombination two step meiosis secondary modifications polyploids asexuals inverted meiosis importance punctuating life cycles meiotic arrests epigenetic resetting meiotic asymmetry meiotic fairness features associated recombination disjunction constraints heterochiasmy crossover interference hotspots present various evolutionary scenarios selective pressures proposed account features highlight evolutionary significance often remains largely mysterious resolving mysteries likely provide decisive steps towards understanding sex recombination found majority eukaryotes article part themed issue weird sex underappreciated diversity sexual reproduction
retinoic acid metabolizing enzyme cypa plays pivotal role vertebrate embryo development cypa characterized previously differentially expressed gene peri implantation rat uteri via suppressive subtracted hybridization analysis however role cypa rat embryo implantation remained elusive expression cypa uteri early pregnancy pseudopregnancy artificial decidualization detected northern blotting real time pcr situ hybridization western blotting immunofluorescent staining effect cypa apoptosis endometrial stromal cells escs isolated rat uteri determined terminal deoxynucleotidyl transferase mediated dutp nick end labeling tunel hoechst staining apoptosis related proteins escs detected western blotting cypa showed distinctive expression patterns embryos uteri peri implantation period remarkable increase versus days mrna protein implantation phase days pregnancy cypa specifically localized glandular epithelium luminal epithelium decidua basalis level cypa protein significantly increased uteri artificial decidualization versus control forced cypa overexpression significantly reduced sensitivity escs etoposide induced apoptosis reductions fas proteins versus control contrast fasl proliferating cell nuclear antigen proteins increased cypa spatiotemporally expressed uterus embryo implantation decidualization overexpression cypa attenuates process uterine stromal cell apoptosis probably via regulating expression fasl
acrylamide widely used industrial monomer categorised carcinogenic found generated starch containing foods heating process discovery caused reasonable concern possible health risks humans due dietary acrylamide uptake order gain information human metabolism acrylamide contribute assessment human carcinogenic risk due uptake measured mercapturic acid epoxide glycidamide acetyl carbamoylethyl cysteine aama acetyl carbamoyl hydroxyethyl cysteine gama human urine relation aama gama important context thought ultimate carcinogenic metabolite median levels smokers found four times higher non smokers median levels mug versus mug aama mug versus mug gama therefore cigarette smoke proved important source acrylamide exposure level aama occupationally non exposed collective ranged mug level gama lod mug ratio gama aama varied median reasonable agreement results different studies rats thus metabolic conversion acrylamide genotoxic epoxide glycidarnide seems occur comparable extent rats humans consequently risk estimations various authorities based experimental data obtained rats supported findings besides also measured haemoglobin adducts blood participants results compared mercapturic acids deduce steady state uptake demonstrate higher reactivity comparison towards haemoglobin compared glutathione humans elsevier rights reserved
enzyme cofactor essential vitamin biotin biosynthesized bacteria fungi plants pathway culminates addition sulfur atom generate five membered thiophane ring immediate precursor dethiobiotin methylene methyl groups positions respectively formation thioether bridging carbon atoms requires cleavage unactivated bonds biotin synthase adenosyl methionine sam adomet radical enzyme catalyzes reduction adomet sulfonium produce deoxyadenosyl radicals high energy carbon radicals directly abstract hydrogen atoms dethiobiotin available experimental structural data suggest cluster bound deep within biotin synthase provides sulfur atom added dethiobiotin stepwise reaction first position generate mercaptodethiobiotin position close thiophane ring formation sulfur containing biomolecules radical reaction involving iron sulfur cluster unprecedented reaction biochemistry however recent enzyme discoveries suggest radical sulfur insertion reactions may distinct subgroup within burgeoning radical sam superfamily article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
multi organ microdevices mimic tissue tissue interactions occur result metabolite travel one tissue tissues vitro systems capable simulating human metabolism including conversion pro drug effective metabolite well subsequent therapeutic actions toxic side effects since tissue tissue interactions human body play significant role determining success new pharmaceuticals development use multi organ microdevices present opportunity improve drug development process devices potential predict potential toxic side effects higher accuracy drug enters expensive phase clinical trials well estimate efficacy dose response multi organ microdevices also potential aid development new therapeutic strategies providing platform testing context human metabolism opposed animal models operated human biopsy samples devices could gateway development individualized medicine review studies multi organ microdevices developed used ways demonstrate devices capabilities present unique opportunities study drug action also discuss challenges inherent development multiorgan microdevices among design devices create devices mimic human metabolism high authenticity since single organ devices testing platforms tissues later combined tissues within multi organ devices also mention single organ devices appropriate discussion elsevier rights reserved
cdna genomic dna fragment encoding new potato proteinase inhibitor isolated diploid potato ivp solanum phurejia named pinii nucleotide sequencing confirmed dna fragment pinii xwas including intron two exons deduced pinii protein contained intact signal peptide two active sites pinii gene deduced pinii protein homology another tetraploid potato proteinase inhibitor respectively northern blotting analysis indicated mrna pinii gene wound induced potato leaves binary vector pnar pnar constructed rice transformation pinii cdna driven respectively rice actin promoter acti maize ubiquitin promoter ubii via agrobacterium mediated method two constructs transferred japonica rice xiushui pcr southern blotting analysis transgenic rice revealed integration pinii gene northern blotting analysis also confirmed transcripts pinii gene transgenic rice plants insect bioassays using stripe stem borer chilo suppressalis walker demonstrated average weight body length larvae transgenic plants nearly larvae control plants respectively results indicate pinii gene effective insect resistance gene could valuable application crop breeding insect resistance
cotyledons day old seedlings lotus corniculatus transformed gene encoding avian influenza hemagglutinin control camvs promoter along matrix attachment regions using agrobacterium mediated transformation gene detected genomic dna transformed plants pcr southern blotting immunoblot analysis plant derived protein revealed presence avian influenza elisa results showed maximum expression level protein total soluble protein first report successful expression avian influenza transgenic corniculatus cultivar leo
three kpc producing escherichia coli recovered water samples urban river city harbin china antimicrobial susceptibility determined broth microdilution molecular characterization genetic relatedness isolates determined polymerase chain reaction pcr pulsed field gel electrophoresis pfge multilocus sequence typing mlst pcr directed phylotyping plasmids analyzed conjugation pfge southern blotting pcr based replicon typing pbrt genetic environment bla kpc gene determined using pcr sequencing pcr analyses revealed isolate carried bla kpc bla cmy bla tem bla ctx qnrb genes belonged sequence type phylogenetic type isolate assigned carried bla kpc bla tem bla ctx bla dha aac qnrs genes isolate possessed bla kpc bla tem bla oxa bla ctx arma aac genes pfge demonstrated three kpc producing coli isolates exhibited individual xbai patterns bla kpc gene located plasmids inca incn non typeable replicon types genetic environment bla kpc three strains consistent genetic structure bla kpc plasmid pkp
carotenoid cleavage dioxygenases ccds large family non heme iron dependent enzymes ccds catalyse selective oxidative cleavage carotenoids produce apocarotenoids apocarotenoid derived molecules form important signalling molecules plants form abscisic acid strigolactone mammals form retinal little known biochemically ccds handful ccds biochemically characterised mechanistically debate surrounds whether ccds utilise mono dioxygenase mechanism review biochemical roles ccds discuss mechanisms ccd cleavage proposed occur discuss recent reports selective ccd enzyme inhibitors elsevier inc rights reserved
radical adenosyl methionine sam superfamily widely distributed group iron sulfur containing proteins exploit reactivity high energy intermediate deoxyadenosyl radical produced reductive cleavage sam carry complex radical mediated transformations reactions catalyzed radical sam enzymes range simple group migrations complex reactions protein rna modification review highlight three radical sam enzymes catalyze reactions involving modified guanosines biosynthesis pathways hypermodified trna base wybutosine secondary metabolites deazapurine structure including hypermodified trna base queuosine redox cofactor article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
mechanisms exposure arsenic induces myriad pathological effects undoubtedly complex individual susceptibility type severity likely strongly influenced genetic factors human metabolism arsenic methylated derivatives presumed result detoxification may actually produce species significantly greater pathological potential introduce transgenic drosophila model arsenic methylation allowing consequences studied higher eukaryote exhibiting conservation many genes pathways human cells providing important opportunity uncover mechanistic details via sophisticated genetic analysis system particularly well suited gene human enzyme arsenic oxidation state methyltransferase introduced nonmethylating drosophila inducible control transgenic flies characterized enzyme inducibility production methylated arsenic species dose dependent consequences chromosomal integrity organismal longevity upon enzyme induction transgenic flies processed arsenite mono dimethylated derivatives identical found human urine induced flies exposed ppm arsenite chromosomal stability clearly reduced whereas much higher doses adult life span significantly increased seemingly paradoxical pair outcomes measurement arsenic body burden presence absence methylation suggested enhanced clearance methylated species might explain greater longevity acutely toxic conditions study clearly demonstrates hazards benefits arsenic methylation vivo suggests resolution based evolutionary grounds
invention microscope fundamental understanding tissue architecture subcellular structures advancement higher magnification microscopes came development various molecular biology tools forster resonance energy transfer fret situ proximity ligation assay situ pla monitor protein interactions microscopy become commonly used method investigation molecular events within cell identification key players signaling networks activation pathways multiple approaches available functional analyses single cells provide information localization proteins given time point also expression levels activity states allowing pinpoint hallmarks different cellular identities within tissues health disease clever solutions increase sensitivity molecular tools possibilities multiplexing well image resolution recently introduced however methods pros cons therefore one needs carefully consider biological question interest along nature sample choosing suitable method combination methods herein review exciting microscopy based molecular techniques proteomic analysis cover benefits well disadvantages use
two articles recently published nature nature cell biology reported early human embryos successfully cultured beyond blastulation development heralds important step toward exploring unknown molecular events driving human pregastrulation development inevitably raises ante decades old ethical debate define early human life save human lives research without destroying another life process copyright chongqing medical university production hosting elsevier
one major unanswered questions respect commercial use genetic transformation woody plants stability transgene expression several decades within individual gene expression strongly affected copy number integrated plant genome local dna features close integration sites woody plants subjected selfing backcrossing modify transgenic allelic structure without affecting valuable traits cultivar molecular characterization transformation event therefore crucial assessing transgene copy number set apple transgenic clones southern blotting describe two alternative methods first based inverse pcr pcr second quantitative pcr pcr methods produced comparable results exception data regarding high copy number clone pcr based system rapid easily adaptable high throughput systems pcr based method provide information regarding transformation event characteristics sequences flanking transgenic construct
lymphocyte specific protein lsp reported regulate cell biology several human cancers including lymphoma breast cancer however functions lsp human hepatocellular carcinoma hcc still unknown study found lsp expression downregulated hcc tissues cell lines lower lsp expression correlated poor clinicopathological features including large tumor size high edmondson steiner grading advanced tumor node metastasis tnm stage additionally demonstrated patients high lsp expression significantly better overall survival disease free survival moreover lsp found independent factor predicting prognosis hcc patients vitro vivo assays showed overexpressing lsp inhibited hcc growth inducing apoptosis growth arrest mechanistically found expression phosphorylated extracellular regulated protein kinases erk downregulated lsp overexpression indicating lsp could suppress hcc growth inhibiting erk pathway hcc cells taken together results indicate lsp may serve prognostic marker potential therapeutic target human hcc
developed family synthetic biodegradable polymers composed structural units endogenous human metabolism designated poly polyol sebacate pps polymers material properties pps polymers tuned altering polyol monomer reacting stiochiometric ratio sebacic acid thermoset networks exhibited tensile young modiali ranging mpa maximum elongations break glass transition temperatures ranging similar degrees vitro degradation physiological conditions slower vivo degradation rates observed pps polymers pps polymers demonstrated similar vitro vivo biocompatibility compared poly lactic glycolic acid plga elsevier ltd rights reserved
introduction mycobacterium abscessus emerging mycobacteria responsible lung diseases healthcare associated extrapulmonary infections recent findings support taxonomic status single species comprising subspecies designated abscessus bolletii massiliense performed review english language publications investigating three subspecies areas covered worldwide human infections often attributable environmental contamination although isolation abscessus reservoir rare basic research demonstrated association virulence cell wall components cording genome analysis identified gene transfer bacteria bacteriological diagnosis abscessus based innovative tools combining molecular biology mass spectrometry genotypic phenotypic susceptibility testing required predict success macrolide clarithromycin azithromycin based therapeutic regimens genotyping methods helpful assess relapse cross transmission search common source treatment standardised outcomes often unsatisfactory expert commentary abscessus still open field terms clinical bacteriological research knowledge ecology transmission routes well host pathogen interactions required number human cases increasing also necessary identify active treatments perform clinical trials assess standard effective regimens
plastid proteins nuclear encoded precursors containing terminal extension known transit peptide although highly variable tps direct precursors conserved posttranslational mechanism involving translocons outer toc inner envelope toc organelle import specificity mediated one components toc complex however high diversity creates paradox sequences specifically recognized emerging model design contain multiple loosely conserved motifs recognized different steps targeting transport process bioinformatics demonstrated many tps contain semi conserved physicochemical motifs termed fglk order characterize fglk motifs recognition import analyzed two well studied tps precursor rubisco small subunit sstp ferredoxin fdtp sstp fdtp contain two fglk motifs analysis large set mutations similar two motifs using vitro organello vivo approaches support model fglk domains mediate interaction toc possibly toc components vivo import analysis suggests multiple fglk motifs functionally redundant furthermore discuss fglk motifs required efficient precursor protein import elements may permit convergent function highly variable class targeting sequences
background small non coding rnas essential regulators gene expression transcriptional posttranscriptional levels high throughput sequencing revealed thousands predicted small rnas however well characterized northern blotting convincing method small rna validation findings study improved northern blot method using biotin labeled probes mirnas sirnas derived arabidopsis thaliana oryza sativa investigated results suggest improved method sensitive efficient approximately total rna sufficient detection furthermore long term storage probes labeled manner convenient less contaminative degradative compared traditional probes conclusions protocol alternative strategy small rna detection represents efficient means researching small rnas
dnop member conserved nop sik gene family encode components small nucleolar ribonucleoprotein snornp complexes study function dnop generated polyclonal antibody determined expression pattern highly expressed different periods drosophila development used heritable rna interference rnai combination yeast gal uas binary system knock dnop protein resulted lethality dramatic somatic anomalies rnai mutant fly dnop protein reduced efficiently northern blotting showed processing rrna disrupted dnop knock fly rrna normal results suggest dnop essential drosophila growth function execution early pre rrna processing steps lead formation rrna
cotton stubborn plant genomic dna isolation due high level polyphenolics polysaccharides secondary metabolites genomics molecular biology studies require high quality large quantity dna standardized efficient miniprep protocol cotton genomic dna isolation provides higher yield dna fresh leaf tissue also provide excellent purity dna amenable elementary enzymatic preparations pcr techniques southern blotting high end genomic studies technique require liquid nitrogen needs small amount sample less time fewer chemicals one process samples per day genomic dna extracted good transgenic event characterization marker assisted selection
chapter describes method isolation intact polyadenylated mrna using lna oligo capture method enables efficient isolation poly rna directly guanidinium thiocyanate guscn containing cell tissue extract combining design biotinylated lna oligo capture probes subsequent immobilization captured poly rna onto streptavidin coated magnetic particles contrast dna oligo polyt pna based mrna isolation techniques lna oligo capture method allows poly selection presence guscn cell lysis buffer needed efficient inactivation endogenous rnases addition lna oligo facilitates highly efficient poly isolation elevated temperatures compared standard oligo technology successful use lna oligo capture method recovery mrna human cells subsequent use mrna northern blotting analysis pcr qrt pcr demonstrated
microorganisms produce large number peptide based natural products display broad range biologically interesting properties including antimicrobial immunosuppressant anticancer activities well behaving virulence factors signaling molecules peptide natural products composed proteinogenic amino acids well number compound classes including non proteinogenic amino acids aryl acids fatty acids hydroxyl acids heterocyclic rings sugars provide complex level chemical diversity many natural products biosynthesized large highly versatile multifunctional megasynthetases known nonribosomal peptide synthetases nrpss adenylation domains found nrps modules essential catalytic components function gatekeepers select appropriate amino acid building blocks nonribosomal peptide nrp biosynthesis results extensive periods genetic biochemical bioinformatic investigations provided detailed understanding functional characteristics molecular basis underpinning domain enzymology nrp biosynthesis review therefore focus recent discoveries breakthroughs structural elucidation molecular mechanism chemical biology underlying domains within nrps enzymes
promote spinosad biosynthesis improving limited oxygen supply high density fermentation saccharopolyspora spinosa open reading frame vitreoscilla hemoglobin gene placed control promoter erythromycin resistance gene splicing using overlapping extension pcr cloned integrating vector pset yielding vitreoscilla hemoglobin gene expression plasmid psetevhb introduced spinosa conjugal transfer integrated chromosome site specific recombination integration site broken vertical bar psetevhb resultant conjugant spinosa genetically stable integration confirmed pcr southern blotting analysis carbon monoxide differential spectrum assay showed active vitreoscilla hemoglobin successfully expressed spinosa fermentation results revealed expression vitreoscilla hemoglobin gene significantly promoted spinosad biosynthesis normal oxygen moderately oxygen limiting conditions findings demonstrate integrating expression vitreoscilla hemoglobin gene improves oxygen uptake effective means genetic improvement spinosa fermentation
background mir recently discovered mirna involved cell differentiation however data yet available aberrant expression mir human colorectal carcinoma crc work aimed investigate relationship mir expression pattern clinicopathological features human crc possible regulative mechanisms methods crc adjacent nontumorous tissues human crc derived cell lines collected respectively total rna protein isolated routinely mir expression pattern detected real time reverse transcription polymerase chain reaction pcr northern blotting smoothened smo possible target mir mrna corresponding protein expression pattern detected semiquantitative pcr western blotting nnir expression patterns compared nontumor mucosa crc samples graded progression related factors disease outcome calculated kaplan meier survival analysis determine whether mir related disease free survival dfs overall survival patients moreover smo utr fragment pcr amplified genome dna human colon inserted luciferase reporter plasmid luciferase reporter plasmid construct transfected crc cells together pre mir anti mir luciferase activity transfected cells detected results expression mir significantly downregulated crcs adjacent nontumorous tissues value negatively related advanced tnm stage local invasion furthermore mir value decreased markedly cell line relative low expression mir associated unfavorable outcome dfs independent clinical covariates moreover pcr western blotting analysis demonstrated significant difference smo mrna expression corresponding crcs nontumorous tissues whereas smo protein markedly increased crcs significant increase luciferase activity detected crc cells cotransfected luciferase reporter plasmid construct anti mir conclusions nnir expressed differentially crc associated progression prognosis crc smo might possible target mir made potential antitumor candidate treatment prevention crc
genetic variability sclerotinia sclerotiorum populations investigated many countries consequently different ecological conditions first studies conducted gather information genetic structure populations sampled temperate climate areas based dna fingerprinting analysis restriction fragment length polymorphism rflp data mycelial compatibility groups studies revealed clonal population structure later using dna sequences populations subtropical regions north america reported variable temperate regions past years new analyses temperate sub tropical tropical areas conducted using microsatellite ssr markers studies using ssr reported high variability evidence outcrossing sclerotiorum populations evidence clonality also found authors argue populations subtropical tropical areas diverse argue reports high variability sclerotiorum tropical subtropical regions may due increase number studies performed ssr markers regions cases due inappropriate interpretations results
rare type congenital heart defects chd genetic mechanism total anomalous pulmonary venous return tapvr remains unknown although previous studies revealed potential disease driving regions genes blood samples collected sporadic tapvr cases non tapvr controls subjected whole exome sequencing detected variations confirmed direct sanger sequencing identified non synonymous missense mutations activin receptor type like acvrl sarcoglycan delta sgcd results offered landscape mutations tapvr chinese population firstly valuable mutation based pre post natal screening genetic diagnosis tapvr
background deacetylbaccatin iii dab baccatin iii intermediates biosynthesis taxol anticancer drug useful precursors semi synthesis drug study bioconversion system established production baccatin iii advanced precursor paclitaxel transgenic mushroom flammulina velutipes expressing deacetylbaccatin iii beta acetyltransferase gene expression vector pgfvs tcdbat containing deacetylbaccatin iii beta acetyltransferase dbat gene constructed transformed cells velutipes polyethylene glycol mediated protoplast transformation results polymerase chain reaction southern blotting analysis verified successful integration exogenous dbat gene genome velutipes reverse transcription polymerase chain reaction enzyme activity analyses confirmed dbat gene expressed velutipes dbat able convert substrate baccatin iii conclusion dbat gene plant taxus chinensis functionally expressed velutipes transgenic velutipes expressing dbat gene able produce target product baccatin iii first report transformation expression paclitaxel biosynthetic gene edible mushroom velutipes represents significant step towards bio production paclitaxel advanced precursor baccatin iii edible fungus society chemical industry
surface characteristics play special role biological performance implants several strategies available end ogi osteo growth induction titanium surface surface obtained applying strong acid onto blasted surface aim vitro study evaluate vitro osteoproperties ogi surfaces mesenchymal stem cells derived dental pulp results confirm treatment exert positive effect mitochondrial homeostasis shown decrease ros production related environmental stress mitochondria morphological molecular biology analyses confirmed dpsc cultured ogi surfaces appeared spread comparison grown control titanium surface real time pcr biochemical data clearly demonstrated increase osteoconductive properties ogi treatment conclusion results suggest mesenchymal stem cells sensitively respond surface properties related ogi treatment enhancing osteogenic activities elsevier rights reserved
several sources information suggest man evolved diet ratio omega omega fatty acids approximately whereas today ratio approximately indicating western diets deficient omega fatty acids compared diet humans evolved genetic patterns established omega fatty acids increase bleeding time decrease platelet aggregation blood viscosity fibrinogen increase erythrocyte deformability thus decreasing tendency thrombus formation clinical trial including coronary artery graft surgery evidence increased blood loss due ingestion omega fatty acids many studies show effects omega fatty acids serum lipids depend type patient whether amount saturated fatty acids diet held constant patients hyperlipidemia omega fatty acids decrease low density lipoprotein ldl cholesterol saturated fatty acid content decreased otherwise slight increase high doses lower ldl cholesterol furthermore consistently lower serum triglycerides normal subjects patients hypertriglyceridemia whereas effect high density lipoprotein hdl varies effect slight increases discrepancies animal human studies likely due differences animal human metabolism clinical trials eicosapentaenoic acid epa docosahexaenoic acid dha form fish oils along antirheumatic drugs improve joint pain patients rheumatoid arthritis beneficial effect patients ulcerative colitis combination drugs improve skin lesions lower hyperlipidemia etretinates decrease toxicity cyclosporin patients psoriasis various animal models omega fatty acids decrease number size tumors increase time elapsed appearance tumors studies nonhuman primates human newborns indicate dha essential normal functional development retina brain particularly premature infants omega fatty acids essential growth development throughout life cycle included diets humans omega omega fatty acids interconvertible human body important components practically cell membranes whereas cellular proteins genetically determined polyunsaturated fatty acid pufa composition cell membranes great extent dependent dietary intake therefore appropriate amounts dietary omega omega fatty acids need considered making dietary recommendations two classes pufas distinguished metabolically functionally distinct opposing physiological functions balance important homeostasis normal development canada first country provide separate dietary recommendations omega omega fatty acids
plp catalyzes shifts amino groups free radical intermediates active sites amino acid aminomutases free radical forms substrates created upon atom abstractions carried deoxyadenosyl radical enzymes deoxyadenosyl radical generated iron sulfur cluster mediated reductive cleavage adenosyl methionine however lysine aminomutase ornithine aminomutase radical generated homolytic cleavage cobalt carbon bond adenosylcobalamin imine linkages initial radical forms external aldimines undergo radical addition form azacyclopropylcarbinyl radicals central intermediates catalytic cycles case lysine aminomutase multistep catalytic mechanism corroborated direct spectroscopic observation characterization product radical trapped steady state turnover analogues substrate related radical substituents adjacent radical center stabilize unpaired electron also observed characterized spectroscopically functional allylic analogue deoxyadenosyl radical observed spectroscopically high resolution crystal structure fully supports mechanistic proposals evidence similar free radical mediated amino group transfer adenosylcobalamin dependent lysine aminomutase provided spectroscopic detection characterization radicals generated thia analogues lysine substrates article part special issue entitled pyridoxal phospate enzymology elsevier rights reserved
past years deterministic rate equations successfully used infer enzyme catalysed reaction mechanisms estimate rate constants reaction kinetics experiments conducted invitro recent years sophisticated experimental techniques developed begin allow measurement enzyme catalysed biopolymer mediated reactions inside single cells single molecule level time course data obtained using methods considerably noisy molecule numbers within cells typically quite small consequence interpretation analysis single cell data requires stochastic methods rather deterministic rate equations concisely review experimental theoretical techniques enable single molecule analysis particular emphasis major developments field theoretical stochastic enzyme kinetics inception mid century modern day status discuss differences stochastic deterministic rate equation models depend enzyme molecule numbers substrate inflow reaction compartment estimation rate constants single cell data possible using recently developed stochastic approaches
exercise immunology research traditionally focussed aerobic exercise however become apparent recent years resistance exercise also considerably affect host immunobiology date however systematic process used establish dose response relationship resistance exercise immune system present systematic review thus conducted determine dose response effects bout resistance exercise acute leukocyte counts accordance prisma guidelines systematic literature search conducted electronic databases pubmed web science google scholar date range following pico elements eligibility criteria included participants healthy humans aged intervention single bout resistance exercise iii comparator least one comparator group outcome acute measures circulating leukocyte counts specific exclusion criteria also applied risk bias quality evidence assessed using pedro scale due individual designs admitted studies qualitative analysis systematic narrative synthesis employed present review results present review demonstrate single bout resistance exercise induces acute monocytosis neutrophilia lymphocytosis became apparent reviewed literature either consistently specify describe sufficient detail time course onset exercise collection blood recommend researchers consider addressing future studies also collect blood measures exercise aid comparison temporal effects regarding determination dose response relationship acute neutrophilia monocytosis lymphocytosis appears occur rapidly greater magnitude following single bout high dose low dose resistance exercise mechanistically exercise induced cell trafficking changes associated mechanical metabolic endocrine factors physical aptitude host may also affect resistance exercise induced lymphocyte trafficking responses european federation immunological societies published elsevier rights reserved
treatment cancer patients involves multidisciplinary approach including surgery radiotherapy chemotherapy traditionally patients metastatic disease treated combination chemotherapies targeted agents cytotoxic agents good response rates achieve palliation however complete responses rarely seen field cancer immunology made rapid advances past years recently number agents vaccines modulate immune system allow detect target cancer cells developed benefit agents twofold enhances ability body immune system fight cancer thus lower incidence side effects compared conventional cytotoxic chemotherapy secondly small substantial number patients metastatic disease cured immunotherapy achieve durable responses lasting number years article review fda approved immunotherapy agents field genitourinary malignancies also summarize new immunotherapy agents evaluated clinical studies either single agents combination
article describe animated slideshow southern blotting made freely available instructors hope provide clear visualization logistics behind technique instructors solid basis well time freed discuss applications students
unmet need herbal medicine identification using fast sensitive easy use method require complex infrastructure well trained technicians instance detection adulterants lobelia chinensis herbal product challenging since current detection technologies effective due limits high resolution melting hrm emerged powerful new technology clinical diagnosis research food industry plant molecular biology method already highlighted complexity species identification study developed method species specific detection chinensis using hrm analysis combined internal transcribed spacer applied method commercial products purporting contain chinensis results demonstrated hrm differentiate chinensis six common adulterants hrm proven fast accurate technique testing authenticity chinensis herbal products based results hrm approach herbal authentication provided
dairy farmers increase number dairy heifer calves born herd using sexed semen reduce number dairy bull heifer calves using beef semen long sexed semen became commercially available believed would provide opportunities increasing genetic level herds populations study studied potential increasing genetic level herd using beef semen combination sexed semen tested hypothesis potential increasing genetic level overall net return would depend herd management test hypothesis simulated scenarios using beef semen sexed semen herds different management levels combined results stochastic simulation models simherd adam simherd simulated effects scenarios management levels economic outcomes operational return technical outcomes parity distribution darns heifer calves disregarded genetic progress adam model quantified genetic level using dams parity distributions frequency sexed beef semen estimate genetic return per year calculated annual net return per slot sum operational return genetic return divided total number slots net return increased sic per slot using sexed semen genetically superior heifers beef semen genetically inferior multiparous cows assumed reliability selection findings herd overall high management reproductive performance longevity calf survival breeding strategy reduced net return sic per slot management levels average main reason large reduction net return heifer shortage arose scenario hypothesis potential beef semen increase genetic level would herd specific supported none scenarios profitable danish circumstances value increased genetic level included comparable improvement genetic level could realized selectively selling dairy heifer calves rather using beef semen
protocol describes perform northern blot analyses detect micrornas precursors single nucleotide resolution crucial analyzing individual length variants evaluating relative quantities unique micrornas cells northern blot analysis consists resolving rnas gel electrophoresis followed transferring fixing nylon membranes well detecting hybridization radioactive probes earlier efforts improve method focused mainly altering sensitivity short rna detection enhanced resolution northern blot technique optimizing electrophoresis step also investigated steps procedure goal enhancing resolution rnas herein present several recommendations protocol applicable analyses kinds endogenous exogenous rnas falling within length ranges corresponding microrna pre microrna lengths respectively
oleate delta desaturase fad key enzyme involved conversion oleic acid linoleic acid brassica napus fad gene targeted silencing rnai gene control seed specific napin promoter study aims identify transgenic plants analyze level bnfad transcripts addition fatty acid profile seeds indicated pcr southern blotting analysis total six transgenic plants developed analysis performed pcr revealed significant regulation bnfad transcripts developing seeds resulted increase oleic acid composition mature seeds data demonstrated bnfad gene efficiently regulated mediated rnai gene oleic acid composition transgenic rapeseeds significantly enhanced
cytoskeletal motor proteins move filamentous tracks converting input chemical energy derive catalyzing hydrolysis atp atpase site analogue engine hydrolysis atp analogue burning chemical fuel moreover functional role segment motor analogous transmission system automobile consists shaft gear clutch etc operation engine intrinsically noisy motor faces molecular hailstorm aqueous medium commemorative review celebrate centenary michaelis menten landmark paper golden jubilee monod colleagues classic paper highlighting relevance respect explaining operational mechanisms engine transmission system respectively cytoskeletal motors
use enzymes non aqueous solvents expands use biocatalysts hydrophobic substrates ability tune selectivity reactions solvent selection non aqueous enzymology also allows fundamental studies role water solvents enzyme structure dynamics function molecular dynamics simulations serve powerful tool area providing detailed atomic information effect solvents enzyme properties however common protocol non aqueous enzyme simulations exist want simulate enzymes non aqueous solutions many crystallographic waters keep present work question addressed determining crystallographic water molecules lead quickly equilibrated protein structure five different methods selecting keeping crystallographic waters used order discover crystallographic waters lead protein structure reach equilibrated structure rapidly organic solutions found buried waters contribute rapid equilibration organic solvent slow diffusing waters giving similar results
background antibody mediated rejection amr contributes heart allograft loss however important knowledge gap remains terms pathophysiology amr detection immune activity injury degree stage could improved intragraft gene expression profiling methods prospectively monitored heart transplant recipients referred french transplant centers january january amr compared patients amr matched control group patients without amr characterized patients using histopathology ishlt international society heart lung transplantation grades immunostaining circulating anti hla donor specific antibodies time biopsy together systematic gene expression assessments allograft tissue using microarrays effector cells evaluated vitro human cell cultures studied validation cohort heart recipients transplanted edmonton canada including cases amr controls results total heart transplant endomyocardial biopsies assessed amr showed distinct pattern injury characterized endothelial activation microcirculatory inflammation monocytes macrophages natural killer cells also observed selective changes endothelial angiogenesis cell transcripts including cda signaling interferon gamma inducible genes amr selective gene sets accurately discriminated patients amr without included transcripts area curve endothelial activation transcripts area curve macrophage transcripts area curve interferon transcripts area curve comparisons gene sets showed increased expression increasing pathological amr pamr international society heart lung transplantation grade association donor specific antibody levels unsupervised principal components analysis demonstrated high proportion molecularly inactive pamr significant molecular overlap pamr full blown pamr cases endothelial activation transcripts interferon transcripts showed association chronic allograft vasculopathy molecular architecture selective amr transcripts together gene set discrimination capacity amr identified discovery set reproduced validation cohort conclusions tissue based measurements specific pathogenesis based transcripts reflecting burden endothelial activation macrophage burden interferon effects accurately classify amr correlate degree injury disease activity study illustrates clinical potential tissue based analysis gene transcripts refine diagnosis heart transplant rejection
purpose reviewdendritic cells specialized antigen presenting cells link innate adaptive immunity recognition presentation antigen cells although importance dendritic cells demonstrated many animal models contribution human immunity remains relatively unexplored vivo given central role infection autoimmunity malignancy dendritic cell deficiency dysfunction would expected clinical consequences recent findingshuman dendritic cell deficiency disorders related gata binding protein gata interferon regulatory factor irf mutations highlighted importance dendritic cells monocytes primary immunodeficiency diseases begun shed light nonredundant roles host defense immune regulation vivo contribution dendritic cell monocyte dysfunction pathogenesis primary immunodeficiency disease phenotypes becoming increasingly apparent however dendritic cell analysis yet routine part primary immunodeficiency disease workup summarywidespread uptake dendritic cell monocyte screening clinical practice facilitate discovery novel dendritic cell monocyte disorders well advancing understanding human dendritic cell biology health disease
nutritional systems biology may defined ultimate goal molecular nutrition research relevant aspects regulation metabolism health disease states levels complexity taken account describe molecular physiology nutritional processes complexity spans intracellular inter organ dynamics involves iterations mathematical modelling analysis employing profiling methods biological read outs basis dynamic models enabled better understand nutritional status nutritional challenges affect human metabolism health although achievement proposition may currently sound unrealistic many initiatives theoretical biology biomedical sciences work parts solution review provides examples recommendations molecular nutrition research arena move onto systems level
hla differs hla nucleotide substitutions positions
neurodegenerative diseases characterized intracellular aggregates insoluble proteins majority disorders aetiology pathogenesis poorly understood current nosological concepts largely based molecular signatures protein aggregates also provide valuable tools neuropathological differential diagnosis microtubule associated protein tau one proteins form intracellular fibrillary deposits neurons glial cells large variety disorders today collectively referred tauopathies dysfunction tau unequivocally shown able cause neurodegeneration precise mechanisms tau involved neurodegenerative disorders still poorly understood research focused several decades axonal function tau fibrillar tau aggregation recent cell biological studies opened new insights role tau synapse nucleus according currently emerging cell biological concepts tau might play role regulation neuronal plasticity wide array neuronal networks addition might involved regulating genome stability intriguing question relevant physiological pathophysiological function tau biological meaning large heterogeneity isoforms tau apparently rather promiscuous molecule present review divided two parts first give overview molecular biology cell biology tau physiological functions second part deals pathophysiology tau description tauopathies comprise disorders including alzheimer disease progressive supranuclear palsy cortico basal degeneration pick disease others elsevier inc rights reserved
mhc class antigen processing presentation pathways display peptides circulating cytotoxic helper cells respectively enable pathogens transformed cells identified detected cells become activated either directly kill infected transformed cells cytotoxic lymphocytes orchestrate activation adaptive immune response cells immune surveillance transformed tumour cells drives alteration antigen processing presentation pathways evade detection hence immune response evasion immune response significant event tumour development considered one hallmarks cancer avoid immune recognition tumours employ multitude strategies resulting regulation mhc class expression cell surface significantly impairing ability cytotoxic lymphocytes recognize tumour alteration expression key players antigen processing affects mhc class expression also significantly alters repertoire peptides presented modified peptide repertoires may serve reduce presentation tumour specific associated antigenic epitopes aid immune evasion tumour progression review modifications antigen processing presentation pathway tumours affects anti tumour immune response considering role tumour infiltrating cell populations highlighting possible future therapeutic targets
safety study transgenic plants actual significance creating new species commercializing transgenic plants based pcr southern blotting tests transgene genetic stability ipt gene advanced generation transgenic rice plants studied use plate colony counting technique influence ipt rice plants bacteria number rhizospheric soil investigated molecular detection showed foreign ipt gene stable genetic genome transgenic rice single copy amounts bacteria root soil transgenic lines distinct non transgenic controls tillering stage heading stage filling stage nevertheless variability significant growing season described results reveal ipt rice affect soil bacteria biomass plants field growth
metabolism cycles daily fed fasted states pathways energy production reversible distinct anabolic fed state liver stores glucose glycogen fatty acid triglyceride synthesis active catabolic fasted state liver becomes glucose producer lipogenesis slowed fatty acid oxidation ketogenesis activated rate limiting step latter vested carnitine carnitine palmitoyltransferase cpt system regulator malonyl coa amp induced protein kinase primarily determines concentration malonyl coa four systems significant influence two fatty acid oxidation two lipogenesis peroxisome proliferator activated receptor gamma alpha master regulator metabolism induces hepatic gluconeogenesis fatty acid oxidation catabolic phase deficiency stearoyl coa desaturase although role gluconeogenesis powerfully induces fatty acid oxidation weight loss despite increased food intake rodents major stimulators lipogenesis carbohydrate responsive element binding protein insig system malonyl coa regulated cpt system firmly established humans systems yet confirmed humans likely active well activation fatty acid oxidation considerable clinical promise treatment obesity type diabetes steatohepatitis lipotoxic damage heart
gene expression regulated several levels plants one recently discovered regulatory layers involve short rnas short rnas produced several pathways target either mrnas genomic dna different classes short rnas slightly different sizes detection accumulation important step validating studying non coding short rnas northern blotting routinely used detect short rnas gives information amount size analysed short rnas choice right rna extraction protocol crucial short rnas studied several routinely used commercial rna extraction kits yield short rnas chapter describes optimised rna extraction methods give good yields short rnas separation transfer hybridisation protocols study accumulation short rnas
many recent studies reported microrna mirna biogenesis function related molecular mechanisms various clinical diseases several methods including northern blotting dna chip analyses capable assessing mirna production patterns cells however development repetitive monitoring mirna production profile noninvasive manner demanded application mirnas human medicine describe noninvasive system monitoring mirna biogenesis stage primary transcripts mature mirna regulation review optical methods developed image mirna production step mirna processing pathway living subjects propose optical mirna imaging strategy based molecular imaging used mirna imaging detector monitor various mirnas using different reporters simultaneously high throughput screening provide potential application diagnosis therapeutics multiple diseases
aim study characterize digestive proteases wild farmed morphotypes males macrobrachium amazonicum heller hepatopancreas wild earthen pond reared specimens collected homogenized unspecific activities trypsin chymotrypsin leucine aminopeptidase determined using specific substrates serine protease trypsin chymotrypsin specific inhibitors employed assess enzyme inhibition optimum temperature thermal stability enzymes also evaluated complementary study carried using electrophoresis zymograms proteolytic activities higher farmed wild prawns differences observed among farmed male morphotypes differences observed wild ones farmed wild specimens showed similar values amylase protease ratio ranging inhibition assays revealed presence serine proteases trypsin chymotrypsin hepatopancreas however stronger trypsin inhibitions occurred farmed morphotypes optimum temperature degrees respectively electrophoresis revealed bands kda kda zymograms revealed bands proteolytic activity using wild animals reference results suggest digestive proteases profile changes farmed prawns may adaptation culture conditions
focalized short pulsed lasers sufficient power generate micrometersized cavities various hydrogels situ technique based laser ablation fabricate intricate microfluidic networks biocompatible gels without manual handling presented method fully compatible cell culture opens unprecedented opportunities cell biology developmental biology stem cell based tissue engineering
kin dna rna binding protein kin highly conserved protein participates dna replication dna repair cell cycle progression recently tumor promoting function kin demonstrated increasingly studied present study role kin invasion metastasis non small cells lung cancer nsclc investigated elevated kin mrna protein expression identified total nsclc benign lung lesion tissue specimens kin overexpression significantly correlated high tumor grade lymph node metastasis indicating poor patient prognosis scratch transwell assays demonstrated knockdown kin inhibited ability nsclc cells migrate invade furthermore reverse transcription quantitative polymerase chain reaction western blot analyses confirmed knockdown kin decreased expression matrix metalloproteinase epidermal growth factor receptor myc avian myelocytomatosis viral oncogene homolog results present study indicate kin markedly overexpressed nsclc tissues compared benign lung lesion peritumoral tissue upregulation kin may serve important role metastasis nsclc cells results indicate kin novel diagnostic prognostic biomarker nsclc addition potential therapeutic target treatment patients nsclc
objective several studies reported retinoic acid might used treat malignancies effects mediated receptor rar rar rar especially acts tumor suppressor however little known role human endometrial cancer materials methods study examined effects trans atra progression human endometrial cancer cell line heca examined expression rar rar endometrial cancer tissues using immunohistochemistry results found inhibitory effects atra cell proliferation apoptosis migration cells heca cells rar rar knockdown individually could cancel inhibition cell proliferation atra cells simultaneous knockdown rar rar could block effect proliferation rar rar knockdown dose dependently reduced inhibition migration atra effect pronounced rar knockdown rar knockdown confirmed rar gene directly regulated atra microarray real time reverse transcription polymerase chain reaction furthermore rar agonist bms significantly suppressed proliferation cells immunohistochemical analysis rar expression positively correlated tumor grade rar showed opposite tendency endometrial cancer conclusions retinoic acid might multiple antitumor effects rar may potent therapeutic target treatment endometrial cancers
background cell necrosis oxidative damage fibrogenesis involved cirrhosis development condition insulin like growth factor igf levels diminished study evaluates whether exogenous administration low doses igf induce hepatoprotection acute carbon tetrachloride ccl induced liver damage compared healthy controls igf additionally impact igf deficiency damaged liver investigated mice partial deficit hormone igf methods three groups week old healthy male mice igf included protocol untreated controls controls received ccl ccl ccl treated subcutaneously igf body weight day days ccl igf parallel three igf deficient mice igf groups studied untreated ccl ccl igf microarray real time quantitative polymerase chain reaction qpcr analyses serum aminotransferases levels liver histology malondialdehyde mda levels assessed end treatment groups data represent mean sem results altered gene coding expression pattern proteins extracellular matrix fibrosis cellular protection found compared healthy controls igf therapy normalized series including healthy mice liver histology showed ccl igf mice less oxidative damage fibrosis lymphocytic infiltrate cellular changes compared ccl moreover correlation mda levels histological damage score pearson igf deficient mice series similar findings identified denoting much vulnerable hepatic parenchyma conclusions igf treatment improved biochemistry histology genetic expression pro regenerative cytoprotective factors series healthy igf deficient mice acute liver damage suggesting low doses igf acute liver damage could feasible therapeutic option
protozoan trypanosoma cruzi causative agent chagas disease major public health problem latin america parasite complex population structure comprised six seven major evolutionary lineages discrete typing units dtus tci tcvi tcbat apparently resulted ancient hybridization events existence significant biological differences lineages strain characterization methods essential study cruzi different vectors hosts however available methods laborious costly limited resolution sensitivity study new genotyping strategy real time pcr identify six dtus clinical blood samples developed evaluated two nuclear rdna two mitochondrial genes coii selected develop original primers method evaluated eight genomic dna cruzi populations belonging six dtus one genomic dna trypanosoma rangeli blood samples individuals chronic chagas disease assays analytical sensitivity dna per reaction tube depending dtu analyzed selectivity trials genomic dna identified dtu excluding non targets dtus every test method able characterize chronically infected clinical samples high detection tcii followed tci proposed original genotyping methodology dtu established high sensitivity single real time pcr assay novel protocol reduces carryover contamination enables detection dtu independently future quantification dtu clinical blood samples elsevier rights reserved
background human endogenous retroviruses hervs suspected play role development multiple sclerosis suspicion part based increased expression viral rna proteins antibodies targeting retroviral products patients recently group provided genetic evidence association endogenous retrovirus herv suggesting herv plays role multifactorial disease found increased expression herv patients suffering recent attack underlying mechanism association still unknown findings evidence animal models indicates erv implication pathogenesis diseases result extra copies virus germ line therefore investigated genome individuals patients healthy controls means southern blotting presence extra herv copies known insertion position readily detectable additional insertions genomic contexts could identified studied individuals substantiates previous copy number pcr findings ratio herv dna women men expected chromosome location difference patient control individuals conclusions additional germ line copies herv could identified precluding copies underlie association provirus multiples sclerosis
eucalyptus spp hybrids remain among mostly widely planted species world owed principally diverse genome site adaptability relatively fast growth rates numerous pure species yet hybrid clones globally deployed plantations industry seeks meet growing demands wood products result various propagation approaches explored seeds vegetative propagation cuttings trough vitro method view remaining cost effective yet efficient sustainable vegetative propagation eucalypts preferred conserves valuable germplasm offers predictability commercial foplantations range eucalypt species hybrids commercial use however resulted array propagation protocols researchers seek optimise growth conditions enhance quality yields rooted cuttings vitro propagules exogenous supply plant growth regulators pgrs central objectives protocols present review traces recent developments eucalyptus propagation presents selection published protocols variety species explants pgr supply advancements plant physiology molecular biology biochemistry clearer picture vegetative physiological growth requirements steadily develops leading researchers accurately manipulate improve eucalyptus propagation furthermore recent completion grandis genome sequence drive advancements eucalypt genomics metabolomics proteomics collectively developments present future opportunities accurately decipher augment significantly enhance sustainable growth yields valuable traits germplasm conservation eucalypts
past years considerable progress made understanding mechanistic enzymology radical sam enzymes clear enzymes appear involved remarkably wide range chemically challenging reactions review article highlights mechanistic structural aspects methylthiotransferases mttases sub class radical sam enzymes mechanism methylthio insertion observed performed three different enzymes exciting unsolved problem article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
insulin hormone regulates blood glucose levels deficiency secretion cause many disorders including polyurea polydipsia weight loss metabolism publications date show strict relationships insulin level number insulin receptors cell respect mathematical estimation insulin level number insulin receptors may important order understand diseases related insulin level number insulin receptors present study queueing theory originated model applied insulin level number insulin receptors based real data parameters optimum insulin level number insulin receptor minimum required energy spent calculated using queueing theory results show indirect correlation insulin level receptor total energy spent also decreased optimum number insulin receptors increased results could said queuing theory predicts optimal number insulin receptors conclusion data reveals queueing theory applied insulin level number insulin receptors estimation insulin levels insulin insulin receptor complex number insulin receptors obtained queueing analysis may identify etiological origins insulin based metabolic disorders
previously demonstrated alemtuzumab induction rapamycin sole maintenance therapy associated increased incidence humoral rejection human kidney transplant patients investigate role rapamycin posttransplant humoral responses cell depletion fully mhc mismatched hearts transplanted hcdtg mice followed alemtuzumab treatment without short course rapamycin untreated hcdtg recipients acutely rejected hearts hcdtg recipients treated alemtuzumab alone conjunction rapamycin showed lack acute rejection mst however additional rapamycin showed reduced beating quality time increased incidence vasculopathy furthermore rapamycin supplementation showed increased serum donor specific antibodies dsa level compared alemtuzumab alone postoperation days surprisingly additional rapamycin treatment significantly reduced foxp reg cell numbers treatment contrary icos follicular helper cells lymph nodes significantly increased interestingly ctla supplementation conjunction rapamycin corrected rapamycin induced accelerated posttransplant humoral response directly modulating tfh cells treg cells suggests rapamycin cell depletion could affect treg cells leading increase tfh cells dsa production reversed ctla study demonstrates rapamycin treatment enhances novo donor specific antibody production cell depletion mediated chronic antibody mediated rejection model addition ctla suppresses antibody production regulating follicular helper cells
introduction role drug transporters one determinants cellular drug permeability become increasingly evident despite lipophilicity drug molecule rate limiting factor passive diffusion across biological membranes carrier mediated active transport gained attention years better understanding effects roles influx transporters towards transmembrane permeability drug molecule need delineated drug development delivery areas covered review focuses findings relative role transporters drug absorption bioavailability particularly areas demanding research emphasized review also highlight various transporters expressed vital organs effects drug pharmacokinetics expert opinion significant efforts devoted understand role transporters iterative interplay metabolizing enzymes molecular enzymology binding structure activity relationship studies assays parallel artificial membrane permeation assay pampa developed analyze drug transport across phospholipid membranes although large web accessible databases tissue selective expression profiles transcriptomic well proteomic available need collocate scattered literature role transporters drug development delivery
background various insect species added genomic databases years thus researchers easily obtain online genomic information invertebrates insects however many incorrectly annotated genes included databases prevent correct interpretation subsequent functional analyses address problem used combination dry wet bench processes select functional genes public databases results enolase important glycolytic enzyme organisms used combination dry wet bench processes identify functional enolases silkworm bombyx mori bmeno first detected five annotated enolases public databases using hidden markov model hmm search cdna cloning northern blotting rna seq analysis revealed three functional enolases mori bmeno bmeno bmenoc bmeno contained conserved key amino acid residue metal binding substrate binding species however bmeno bmenoc showed change key amino acid phylogenetic analysis showed bmeno bmenoc distinct bmeno enolases distributed lepidopteran clusters bmeno expressed tissues used study contrast bmeno mainly expressed testis expression ovary suboesophageal ganglion bmenoc weakly expressed testis quantitative pcr showed mrna expression bmeno bmenoc correlated testis development thus bmeno bmenoc may related lepidopteran specific spermiogenesis conclusions identified characterized three functional enolases public databases combination dry wet bench processes silkworm mori addition determined bmeno bmenoc species specific functions strategy could helpful detection minor genes functional genes non model organisms public databases
methamphetamine produces long lasting deficits dopaminergic neurons long term use via several neurotoxic mechanisms effects mitochondrial biogenesis less studied currently evaluated effects repeated escalating regimen transcriptional factors involved mitochondrial biogenesis glial derived neurotrophic factor gdnf expression substantia nigra striatum rat male wistar rats increasing doses administrated twice day days days discontinuation measured pgc tfam nrf mrna levels indicator mitochondrial biogenesis gdnf expression striatum furthermore evaluated glial fibrillary acidic protein gfap iba mrna levels levels tyrosine hydroxylase synuclein syn using immunohistochemistry real time polymerase chain reaction pcr detected increments pgc tfam mrna levels striatum elevations gdnf levels immediately discontinuation also observed increases gfap iba mrna levels day increases iba mrna days striatum data analysis revealed number cells reduce time points though mrna levels increased day discontinuation data show repeated escalating induces several compensatory mechanisms mitochondrial biogenesis elevation gdnf mechanisms reverse induced neuroinflammation prevent immunoreactivity reduction nigrostriatal pathway cell biochem wiley periodicals inc
precise cell positioning indispensable fields biophysics cellular biology acoustic microbeam produced highly focused ultrasound transducer recently investigated particle cell manipulation virtue relatively good piezoelectric property doped film introduced highly focused ultrasound transducer application using sputtering approach self focused aiscn film based device designed fabricated characterized frequency similar mhz narrow lateral beam width similar aiscn ultrasound transducer shown capable remote controlling single polystyrene microsphere distilled water also demonstrated possess capability manipulate without contact individual epidermoid carcinoma cell two dimensions within range hundreds micrometers phosphate buffered saline importantly cell manipulation realized continuous mode switch operation needed results suggest self focused aiscn film ultrasound transducer promising candidate biomedical molecular biology applications
intergeneric hybridization important strategy introgress alien genes common wheat improvement presence cross ability barrier mechanism regulated gene played major destructive role hybridization reported genes order know underlying molecular mechanism dissect barrier new annealing system acp anneling control primer system used chromosome containing gene specific recombinant inbred line ril population two differentially expressed fragments gene identified cloned sequenced expression confirmed northern blotting analysis sequence analysis resulted clones revealed classes putative genes including stress responsive signal transduction
purpose review introduce metschnikowia yeast researcher community convince readers genus worthwhile object study developmental biology genetics ecology biotechnology metschnikowia sits foundation modern immunology instrumental discovery animal phagocytosis species form monophyletic group within metschnikowiaceae also include smaller genus clavispora clades candida species family stands habit forming meiosis two ascospores metschnikowia needle shaped cases spores reach enormous proportions exceeding length others ascus formation preceded development chlamydospores adaptive value features remains elucidated extensive genetic studies lacking attempts apply methods developed model species successful species found plant insect interface whereas others pathogens aquatic animals served model organisms exploration host parasite theory species globally distributed others exhibit extreme endemism many species remarkably easy recover sampling known habitats pulcherrima close relatives may play important role wine quality produce pulcherrimin iron dipeptide complex interfere growth microorganisms symbiotic species incapable growth culture media assigned genus kinship group remains demonstrated copyright john wiley sons ltd
gut microbiome consists trillions bacteria play important role human metabolism animal human studies implicated distortion normal microbial balance obesity metabolic syndrome bacteria causing weight gain thought induce expression genes related lipid carbohydrate metabolism thereby leading greater energy harvest diet large body evidence demonstrating alteration proportion bacteroidetes firmicutes leads development obesity recently challenged likely influence gut microbiome obesity much complex simply imbalance proportion phyla bacteria modulation gut microbiome diet pre probiotics antibiotics surgery fecal transplantation potential majorly impact obesity epidemic
computational prediction yields efficient scalable initial assessments variants unknown significance may affect human health however discrepancies predictions direct experimental measurements functional impact arise inaccurate computational predictions frequently assumed source present methodological analysis indicating shortcomings computational biological data contribute disagreements demonstrate incomplete assaying multifunctional proteins affect strength correlations prediction experiments variant full impact function better quantified considering multiple assays probe ensemble protein functions additionally many variants predictions sensitive protein alignment construction customized maximize relevance predictions specific experimental question conclude inconsistencies computation experiment often attributed fact test identical hypotheses aligning design computational input design experimental output require cooperation computational biological scientists also lead improved estimations computational prediction accuracy better understanding genotype phenotype relationship
key genes spni spnr involved quorum sensing system serratia marcescens strain cloned localized using specific primers cttgaactgtttgacgtcagc agcgg ccaggtaataactga gccttcaatgaaaat cagacc tgtcgctgtgataagctcca designed according nucleic acid sequences published ncbi accession pcr result demonstrated genes spni spnr located bacterial chromosome plasmid respectively also confirmed southern blotting using internal fragment spnr gene probe results imply new type quorum sensing regulation system never reported previously
change serum metabolic response fasting state postprandial state provides novel insights impact single meal human metabolism therefore study explored changes serum metabolite profile single meal nineteen healthy postmenopausal women normal glucose tolerance participated study received meal consisting refined wheat bread carbohydrates protein fat dietary fibre cucumber noncaloric orange drink blood samples collected fasting five postprandial time points metabolic profile measured nuclear magnetic resonance targeted liquid chromatography mass spectrometry changes time assessed multivariate models anova baseline control metabolomic analyses demonstrated alterations phospholipids amino acids breakdown products glycolytic products acylcarnitines ketone bodies single meal specifically phosphatidylcholines lysophosphatidylcholines citrate displayed overall declining pattern leucine isoleucine methionine succinate increased initially declined thereafter sharp decline acylcarnitines ketone bodies increase glycolytic products postprandially suggest switch body energy source beta oxidation glycolysis moreover individuals relatively high postprandial insulin responses generated higher postprandial leucine responses compared participants lower insulin responses study demonstrated complex changes catabolic anabolic metabolism meal indicated extent postprandial responses different individuals high low insulin response
serrano nascimento calil silveira nunes posttranscriptional regulation sodium iodide symporter mrna expression rat thyroid gland acute iodide administration physiol cell physiol first published january doi ajpcell iodide important regulator thyroid activity excess elicits wolff chaikoff effect characterized acute suppression thyroid hormone synthesis ascribed serum tsh reduction tgf beta increase production iodolipids thyroid alterations take hours days occur contrasting promptness wolff chaikoff effect investigated whether acute iodide administration could trigger events precede changes reduction sodium iodide symporter nis mrna abundance adenylation perchlorate treatment could counteract rats subjected methylmercaptoimidazole treatment received nai saline saline intraperitoneally killed min later another set animals treated iodide perchlorate equimolar doses nis mrna content evaluated northern blotting real time pcr nis mrna poly tail length rapid amplification cdna ends poly test race pat observed nis mrna abundance poly tail length significantly reduced periods iodide treatment perchlorate reversed effects indicating iodide agent triggered modifications observed since poly tail length mrnas directly associated stability translation efficiency assume rapid decay nis mrna abundance observed due reduction stability condition translation could impaired data show first time iodide regulates nis mrna expression posttranscriptional level providing new mechanism iodide exerts autoregulatory effect thyroid
paper reveals nearly years national academy sciences nas biological effects ionizing radiation beir committee used russell dose rate data support adoption linear threshold lnt dose response model genetic cancer risk assessment russell acknowledged significant reporting mutation rate historical control group error unknown beir profound implications leading incorrectly adopt lnt model decision profoundly changed course risk assessment radiation chemicals present
micrornas mirnas class small noncoding rnas act efficient post transcriptional regulators gene expression first cross kingdom mirna based interaction evidenced demonstrating exogenous mirnas act manner mammalian functional mirnas starting evidence defined concept cross kingdom functional homology plant mammalian mirnas needful requirement vegetal mirna explicit regulation mechanism host mammalian cell comparable endogenous one proposed new dedicated algorithm compare plant mammalian mirnas searching functional sequence homologies developed web software called mircompare also predicted human genes regulated selected plant mirnas determined role exogenous mirnas perturbation intracellular interaction networks finally already performed pirro coworkers ability mircompare select plant mirnas functional homologies mammalian ones experimentally confirmed evaluating ability mol mira downregulate protein expression sirt mimic transfected human hepatoma cell line hepg cells tool implemented user friendly web interface access free public website http mircompare
predicting location protein resides within cell important cell biology computational approaches issue attracted attentions community biomedicine among protein features used predict subcellular localization proteins feature derived gene ontology shown superior others however sights field set presence absence predefined terms proposed method derive information intrinsic structure graph feature vector constructed element representing information content term annotating protein investigated support vector machines used classifier test extracted features evaluation experiments conducted three protein datasets results show method enhance eukaryotic human subcellular location prediction accuracy better previous studies also used based features especially scenario cellular component annotation absent method achieved satisfied results overall accuracy elsevier ltd rights reserved
acriflavin acridinediamine acridine derivatives act prokaryotic eukaryotic cells level dna coiling enzymes topoisomerases causing stabilization enzyme dna cleavable complex order better understand mode action acriflavin differential display pcr used isolate transcripts specifically expressed exposure trichophyton rubrum mycelia drug five transcripts whose differential expressions confirmed northern blotting revealed genes previously described dermatophyte functional grouping identified putative enzymes possibly involved mitochondrial respiratory electron transport chain iron transport results may relevant understanding molecular events involved stress response rubrum acriflavin
kruppel associated box krab containing zinc finger proteins zfps comprise largest family zinc finger transcription factors function transcriptional repressors study glial cell line derived neurotrophic factor gdnf ret signaling identified bone marrow zinc finger bmzf encoding krab zfp gdnf inducible gene differential display analysis expression bmzf transcripts human neuroblastoma cell line tgw increased gdnf stimulation determined northern blotting quantitative reverse transcriptase polymerase chain reaction bmzf possesses transcriptional repressor activity krab domain bmzf interacts repressor protein krab associated protein kap krab domain sirna mediated knockdown kap abolished transcriptional repressor activity bmzf indicating kap necessary bmzf function furthermore sirna mediated silencing bmzf inhibited cell proliferation findings suggest bmzf transcriptional repressor induced gdnf plays role cell proliferation elsevier inc rights reserved
vivo effect rifampicin potent ligand pxr gene expression cypb car pxr mdr mrp mrp lrp transporters liver cortex cerebellum midbrain hippocampus meninges brain capillaries pig investigated animals treated four daily doses rifampicin basal mrna expressions individual cypas cypb car pxr various brain regions except meninges corresponding hepatic mrna values whereas mrnas brain transporters closer comparable liver pig treatment rifampicin mrna expression cyps transporters brain regions appear change except cypa cortex hippocampus cypb meninges enzymatic analysis cypas cypb microsomes mitochondria liver brain tissues using marker activities benzyloxyquinoline debenzylase anthraldehyde oxidase showed lack rifampicin induction brain regions unlike liver taken together results demonstrate cypb cypas mdr mrp mrp lrp transporters expressed although different extent brain regions despite presence pxr car resistant induction indicating regulation proteins complex brain liver data obtained vivo brain regions liver pig may interest human metabolism cns
alzheimer disease associated magnesium ion deficits interleukin beta beta elevations serum brains patients however mechanisms regulating beta expression dyshomeostasis remain unknown herein studied mechanism beta reduction using recently developed compound magnesium threonate mgt using human glioblastoma mouse brain glial cells vitro model system delineated signaling pathways mgt suppressed expression beta glial cells detail found mgt incubation stimulated activity extracellular signal regulated protein kinases erk peroxisome proliferator activated receptor gamma ppar gamma signaling pathways phosphorylation resulted beta suppression simultaneous inhibition phosphorylation erk ppar gamma induced beta upregulation mgt stimulated glial cells accordance vitro data intracerebroventricular injection mgt ventricles app transgenic mice treatment precursor protein app brain slices suppressed mrna protein expression beta vivo observations supported oral administration mgt months importantly influx ventricles mice blocked effects beta amyloid beta protein oligomers cerebrospinal fluid reduced stimulation beta expression cerebral cortex app transgenic mice potentially contributed inhibition neuroinflammation cellular molecular immunology published online november
appropriately defining efficiently calculating similarities large data sets often essential data mining gaining understanding data generating processes building tractable representations given set objects correlations rely premise object characterized context correlations objects similarity two objects expressed terms similarity contexts way similarity pertains general notion objects similar exchangeable data propose scalable approach calculating relevant similarities among objects relating correlation graph transformed similarity graph graphs express rich structural properties among objects specifically show concepts abstractions objects constituted groups similar objects discovered clustering objects similarity graph principles methods applicable wide range fields demonstrated three domains computational linguistics music molecular biology numbers objects correlations range small large
peripartum period lung must respond dramatic changes circulating hormones nutritional factors physiologic signals transition becoming organ gas exchange protein synthesis consumes significant proportion metabolic resources inhibited many environmental stresses hypothesized translational control mechanisms play role perinatal lung immunoblots late gestation fetal day rat lung extracts revealed gradual decreases phosphorylated forms mammalian target rapamycin effectors eukaryotic initiation factor eif binding protein kinase ribosomal protein followed sharp increases postnatal day immunohistochemistry showed phospho staining prominent epithelial cells large small airways gtp sepharose pulldown experiments showed decrease association translation initiation factor eife inhibitor eife binding protein concomitant increase eife association eifg immediately birth polysome profiles confirmed decrease abundance large polysomes reversed microarray analysis polysomal versus total rna lungs used identify specific genes association large polysomes changed either pre postnatally pcr northern blotting used confirm translational changes selected candidate genes including prenatal increase postnatal decrease regulatory subunit protein phosphatase translational regulation protein phosphatase regulatory inhibitor subunit gene specific changes contrast corresponding global changes polysome abundance
genome wide association studies identified autophagy related susceptibility genes inflammatory bowel disease ibd however whether autophagy regulators utilized therapeutic targets remains unclear identify novel microtubule associated protein light chain interacting proteins intestinal epithelial cells iecs isolated primary iecs green fluorescent protein gfp mice performed immunoprecipitation gfp antibody analyzed immunoprecipitates mass spectrometry hadha identified interacting protein primary iecs hadha gene encodes alpha subunit mitochondrial trifunctional protein given hadha catalyzes last three steps mitochondrial beta oxidation long chain fatty acids investigated whether long chain fatty acids induce autophagy iecs found palmitic acid induced autophagy dld hct cells hadha expressed mitochondria also cytosol puncta localized hadha enhanced palmitic acid stimulation however puncta localize tom suggesting hadha induced associate puncta sites mitochondria thus hadha may extra mitochondrial functions furthermore found palmitic acid induced cell death iecs accelerated bafilomycin chloroquine findings suggested palmitic acid induced autophagy supports survival iecs taken together results suggested hadha involved long chain fatty acid induced autophagy iecs thus providing new insights pathology ibd revealing novel therapeutic targets ibd elsevier inc rights reserved
interaction tlr hiv human mdm hsc novel determinant chronic immune activation liver fibrosis progression highly active antiretroviral therapy significantly improved prognosis hiv infected subjects however patients treated long term still manifest increased mortality even undetectable plasma viremia often experience persistent immune activation furthermore liver related mortality common cause non aids related death hiv infected individuals highly active antiretroviral therapy accelerated fibrosis progression tlrs first line host response pathogens play important role human host defense viruses sensing viral structural proteins growing evidence points tlr key player chronic immune activation hiv recognition replication liver fibrosis progression suggesting hiv triggering tlr may dictate aspects multifaceted aids pathogenesis study provide evidence interplay host tlr hiv human monocyte derived macrophages hepatic stellate cells leading intracellular pathways biologic activities mediate proinflammatory profibrogenic signals finally hypothesize ccr tlr likely part common receptor cluster blocking ccr specific antagonists impairs macrophage capacity produce chemokines response lps chronic immune activation liver fibrosis remain important obstacles highly active antiretroviral therapy success thus identification tlr axis novel determinant immune system hepatic stellate cell biology opens new perspectives management hiv infection disease
congenital atrial septal defect asd progressive atriventricular block avb two common phenotypes linked homeobox nkx mutations animals humans however prevalence spectrum nkx mutation patients asd avb remain elucidated present study coding exons flanking introns nkx gene encodes homeobox containing transcription factor essential development heart sequenced cohort unrelated patients asd avb subsequently mutation carrier available family members controls unrelated ethnically matched healthy individuals recruited also genotyped nkx functional consequence mutant nkx evaluated contrast wild type counterpart using dual luciferase reporter assay system result novel heterozygous nkx mutation identified index patient asd avb prevalence similar genetic analysis proband pedigree revealed mutation segregated asd avb complete penetrance nonsense mutation eliminated partial homeobox carboxyl terminus absent control chromosomes functional evaluation showed nkx mutant transcriptional activity furthermore mutation disrupted synergistic activation nkx gata binding protein another cardiac core transcription factor associated asd results present study expand spectrum nkx mutations linked asd avb indicated nkx loss function mutations uncommon cause asd avb humans
growing prevalence metabolic diseases obesity diabetes putting high strain global healthcare systems well increasing demand efficient treatment strategies million people worldwide suffering type diabetes current trends projection global adult population affected light systemic properties metabolic diseases well interconnected nature metabolism necessary begin taking holistic approach study diseases human genome scale metabolic models gems topological mathematical representations cell metabolism proven valuable tools area systems biology successful applications gems include process gaining biological mechanistic understanding diseases finding potential biomarkers identifying new drug targets review focus modeling human metabolism field obesity diabetes showing vast range applications clinical importance well point future challenges
trisomy well described dysmorphic syndrome physical features include hypertelorism slanting palpebral lissures deep set eyes turned corners mouth mild skeletal anomalies including hypoplastic terminal phalanges report infant born typical features trisomy syndrome well additional features include extreme joint hyperlaxity subluxation knees elbows arachnodactyly total anomalous pulmonary venous return karyotype revealed unbalanced chromosome complement specifically derivative chromosome novo unbalanced translocation chromosomes resulted partial trisomy pter deletion long arm chromosome proximal band fluorescence situ hybridization studies methylation analysis southern blotting revealed deletion snrpn locus paternally derived chromosome consistent prader willi syndrome infant represents first reported case trisomy syndrome total anomalous pulmonary venous return hypoplasia amygdala hippocampus additional finding prader willi syndrome resulting derivative chromosome arising unbalanced novo translocation clin dysmorphol wolters kluwer health lippincott williams wilkins
large body experimental clinical evidence complement activation contributes glomerular injury multiple different diseases however underlying mechanisms trigger complement activation vary disease disease immune complexes activate classical pathway complement many types glomerulonephritis whereas alternative pathway mannose binding lectin pathways directly activated diseases eculizumab inhibitory antibody approved treatment atypical hemolytic uremic syndrome case reports suggest also effective types glomerulonephritis furthermore new complement inhibitory drugs developed target additional proteins within complement cascade raising possibility blocking specific complement proteins involved given disease review examines rationale targeting different proteins within complement cascade new anti complement drugs currently development challenges investigators face bringing drugs clinic
study laccase trametes versicolor immobilized poly acrylamide crotonic acid sodium alginate aam cra alginate poly acrylamide crotonic acid carrageenan aam cra car poly acrylamide citraconic acid sodium alginate aam alginate poly acrylamide citraconic acid carrageenan aam car semi interpenetrating network entrapment method optimum temperatures values determined degrees free laccase immobilized laccases respectively days storage degrees immobilized laccases retained original activities range percent decolorization acid orange free enyzme enyzmes immobilized hydrogels found percent decolorization acid orange presence mediator free enyzme found enyzmes immobilized hydrogels found international union biochemistry molecular biology inc
polycarcin polyketide natural product streptomyces polyformus chosen study structure activity relationships gilvocarcin group antitumor antibiotics due similar chemical structure comparable bioactivity gilvocarcin principle compound group feasibility enzymatic modifications sugar moiety auxiliary methyltransferases enzymes used modify interaction drug histone biological target interacts sugar moiety cytotoxicity assays revealed free group sugar moiety essential maintain bioactivity polycarcin apparently important hydrogen bond donor interaction histone converting och group improved bioactivity bis methylated polycarcin derivatives revealed weaker activity parent compound indicating least two hydrogen bond donors sugar necessary optimal binding
hepatitis virus one five types hepatotropic viruses cause human liver disease similar liver disease also identified ducks caused duck hepatitis virus dhav notably many types hepatotropic viruses detected urine however viruses enter urine largely unexplored elucidate potential mechanism used avian hepatotropic virus investigate replication strategies immune responses kidney days infection immunohistochemistry qpcr used detect viral distribution copies kidney double staining cells virus qpcr used investigate cell immune responses expression levels cytokines histopathology detected standard staining study viruses persistently located scattered renal tubules cells recruited kidney accompanied transient cytokine storms conclusion extremely scattered infection viral strategy escape host immunity may persistently shed virus urine deletion cell responses transient cytokine storms indeed provide advantageous renal environment persistent survival
lipolytic activities yarrowia lipolytica lip lipase yllip human pancreatic hpl dog gastric dgl lipases first compared using lecithin stabilized triacylglycerol tag emulsions intralipid various bile salt concentrations like dgl yllip able hydrolyze tag droplets covered lecithin monolayer hpl directly active substrate results good agreement respective kinetics adsorption phosphatidylcholine monomolecular films three lipases yllip tensioactive lipase yllip adsorption onto monolayer spread air water interface influenced dependent changes enzyme lipid interfacial association constant ads optimum long chain egg monolayer medium chain dilauroylphosphatidylcholine film using substrate monolayers dicaprin trioctanoin yllip displayed highest lipolytic activities substrates surface pressure range yllip active large range displayed dependent activity profile combining dgl hpl features values found stomach intestine respectively apparent maximum activity yllip observed acidic therefore well correlated efficient interfacial binding levels whatever type interfaces intralipid emulsions substrate monolayers findings support use yllip enzyme replacement therapy treatment pancreatic exocrine insufficiency pathological situation acidification intestinal contents occurs elsevier masson sas rights reserved
mott cells atypical plasmacytes recognized microscopically endoplasmic reticulum distensions russell bodies result retained secretory product antibody originally associated parasitism observed broad spectrum immunopathology sometimes involving hypergammaglobulinemia descriptions mott cells appear avian literature purpose manuscript provide examples identified light microscopy three poultry species transmission electron micrographs tem plasmacytes turkey oviduct mucosa included comparison mott cell light microscopic images wright stained blood bone marrow commercial specific pathogen free spf chickens ducks turkeys sources mott cell positive samples commonly occurred leukocytosis leukemoid reactions polymicrobial bacteremia fungemia atypical granulocytes leukocytes regularly accompanied mott cells proposed circulating mott cells sentinels indicative stress dyscrasia pathology moreover mott cells like atypia complicate interpretation simple heterophil lymphocyte ratios mott cells defective plasmacytes observations address hematology immunology pathology welfare issues
calamus guruba buch ham perennial dioecious rattan species family arecaceae recently emerged important source tribal economy owing high quality flexible canes furniture manufacturing cottage industries dioecious nature together disproportionate distribution male female sex organs major constraint development effective breeding programme plant early identification male female genotypes seedling stage pre requisite ensure genetic improvement guruba present study used inter simple sequence repeat issr markers develop sequence tagged site sts linked male sex guruba molecular analysis bulked dna pooled male female genotypes resulted isolation putative male specific marker cgmsm partial sequencing cgmsm resulted sts marker cgmy could successfully amplify fragment male female plants dna gel blot analysis confirmed single copy locus male genome guruba validation cgmy natural population guruba resulted precise detection males females individuals unknown sex therefore sts marker cgmy could used proficient tool early sex differentiation form basis sustainable breeding programme genetic improvement guruba
using large scale genomic enzymology approach assigned novel atp dependent four carbon acid sugar kinase functions members duf protein family domain unknown function pfam families discovered novel catabolic pathways threonate threonate erythronate experimentally determined ligand specificities several solute binding proteins sbps trap tripartite atp independent permease transporters four carbon acids including erythronate erythronate used constrain substrates catabolic pathways degrade sbp ligands intermediates central carbon metabolism sequence similarity networks genome neighborhood networks used identify enzyme components pathways conserved genome neighborhoods encoded sbps well permease components trap transporters members duf family member hydroxy threonine phosphate dehydrogenase pdxa oxidative decarboxylase class aldolase ribulose bisphosphate carboxylase oxygenase large subunit rubisco superfamily characterized substrates members pdxa class aldolase rubisco superfamilies phosphorylated postulated members duf family novel atp dependent kinases participate catabolic pathways four carbon acid sugars determined duf pdxa pair participates pathway conversion threonate dihydroxyacetone phosphate duf class aldolase pair participates pathways conversion erythronate threonate epimers carbon dihydroxyacetone phosphate physiological importance pathways demonstrated vivo phenotypic genetic analyses
past years xenopus embryo emerged incredibly useful model organism studying formation function cilia ciliated epithelia vivo led variety findings elucidating molecular mechanisms ciliated cell specification basal body biogenesis cilia assembly ciliary motility findings also revealed deep functional conservation signaling transcriptional post transcriptional protein networks employed formation function vertebrate ciliated cells therefore xenopus research contribute crucial insights developmental cell biology also molecular mechanisms underlying cilia related diseases ciliopathies well diseases affecting ciliated epithelium respiratory tract humans chronic lung diseases additionally systems biology approaches including transcriptomics genomics proteomics rapidly adapted use xenopus broaden applications current future translational biomedical research review aims present advantages using xenopus cilia research highlight evolutionarily conserved key concepts mechanisms ciliated cell biology elucidated using xenopus model describe potential xenopus research address unresolved questions regarding molecular mechanisms ciliopathies airway diseases
background micrornas mirnas small non coding rnas post transcriptionally regulate gene expression sequential cleavage mirna precursors results similar nucleotide duplex one strand mature mirna typically loaded rna induced silencing complex risc passenger strand degraded little known genetic variation might affect mirna biogenesis function results sequenced mir mir mira mira mirb genes encode cardiac enriched mirnas mir mir individuals familial atrial fibrillation identified variants including novel mira substitution variant lies within duplex end mature strand mir predicted prevent base pairing weaken thermostability site favoring incorporation passenger strand mir risc genomic dna fragments containing mir precursor sequences alleles transfected hela cells northern blotting allele showed strong expression mir weak expression mir contrast allele effect mir significant increase mean fold mir levels deep sequencing small rna libraries prepared normal human murine atria confirmed nearly mature mir comprised mir levels mir low number isomirs variations ends identified mir mir predominant mir isomirs one predominant mir isomir bioinformatics analyses indicate major mir isomirs numerous predicted target mrnas common conclusions multiple mir isomirs potential different mrna target profiles present atrium humans mice identified human mira variant alters mirna processing results accumulation mir strand usually degraded
human cytochromes pseudogenes discovered date http drinelson utmem edu cytochromep html still remain orphans sense function expression sites regulation still largely elucidated posthuman genome sequencing project era presented research community novel challenges despite many insights gathered gene location genetic variations human genome still lack important knowledge novel enzymes functions endogenous exogenous metabolism well possible roles metabolism toxicants carcinogens list orphans currently consists members orphans already putative assigned functions arachidonic acid metabolism may activate carcinogens however point majority knowledge available genes single nucleotide polymorphisms biological functions noteworthy orphans express high interspecies sequence conservation orthologs rodents cypx cypx cypv cypv review summarizes recent knowledge orphans questions remaining specific roles human metabolism
innovations novel enzyme discoveries impact upon wide range industries biocatalysis biotransformations represent great challenge food industry polymers chemical industry key tools technologies bioinformatics tools guide mutant library design molecular biology tools create mutants library microfluidics microplates parallel miniscale bioreactors mass spectrometry technologies create high throughput screening methods experimental design tools screening optimization allow evolve discovery development implementation enzymes whole cells bio processes technological innovations also accompanied development implementation clean sustainable integrated processes meet growing needs chemical pharmaceutical environmental biorefinery industries review gives overview benefits highthroughput screening approach discovery engineering biocatalysts cell culture optimizing production integrated processes extraction purification
toxicity inorganic trivalent arsenic living organisms reduced vivo methylation element man biotransformation leads synthesis monomethylarsonic mma dimethylarsinic dma acids efficiently eliminated urine along unchanged form order document methylation process humans kinetics mma dma elimination studied volunteers given single dose one three arsenicals repeated doses arsenic methylation efficiency also assessed subjects acutely intoxicated arsenic trioxide aso patients liver diseases several observations humans explained properties enzymic systems involved methylation process characterized vitro vivo rats follows production metabolites catalyzed enzymic system whose activity highest liver cytosol different enzymic activities using methyl group donor adenosylmethionine lead production mono methylated derivatives excreted urine mma dma dimethylating activity highly sensitive inhibition excess inorganic arsenic reduced glutathione concentration liver moderates arsenic methylation process several mechanisms stimulation first methylation reaction leading mma facilitation uptake hepatocytes stimulation biliary excretion element reduction pentavalent forms methylation protection reducing environment cells necessary maintain activity enzymic systems
background study reports analysis application diagnostic predictability revised icbd criteria unselected cohort patients ensuing organ associations patterns disease methods retrospective cohort study conducted using database electronic medical records three categories recognised clinically defined incomplete rejected diagnoses applied isg icbd classification criteria subgroups validate diagnostic accuracy multidisciplinary assessment results patients underwent initial assessment urban tertiary care centre patients confirmed diagnosis incomplete diagnosis rejected diagnosis icbd demonstrated estimated sensitivity positive likelihood ratio strongest independent predictors central nervous lesions genital ulceration erythema nodosum retinal vasculitis anterior uveitis posterior uveitis conclusions icbd criteria sensitive picking cases isg using multidisciplinary assessment gold standard icbd may diagnose population patients incomplete form represent distinct group given early diagnostic label behcet disease complex disease best diagnosed multidisciplinary clinical assessment patients differ clinical presentation genetic susceptibility original descriptions study also highlights incomplete group behcet patients less well defined clinical presentation
discovery rise graphene historically enabled similar optical contrast specialized substrates like oxide capped silicon however substantially lower contrast obtained transparent substrates moreover remains difficult visualize nanoscale defects graphene including voids cracks wrinkles multilayers device substrates report use interference reflection microscopy irm facile label free optical microscopy method originated cell biology directly visualize graphene transparent inorganic polymer substrates image contrast per graphene layer noninvasive approach overcomes typical challenges associated transparent substrates including insulating rough surfaces enables unambiguous identification local graphene layer numbers reveals nanoscale structures defects outstanding contrast throughput thus demonstrate situ monitoring nanoscale defects graphene including generation nanocracks uniaxial strain video rate
human short chain dehydrogenases reductases sdrs protein family subject recent studies critical role human metabolism studies also found single nucleotide polymorphisms sdr protein family responsible variety genetic diseases including type diabetes study reports effect sequence variation structural functional integrities human sdr protein family using phylogenetics correlated mutation analysis tools results indicated tyrosine serine lysine signature protein residues direct contribution structural functional stabilities sdr protein family subgroups sdr protein family signature protein combination represent unique functionality iii mutations human sdr protein family showed high correlation terms evolutionary history combination results inferred evolutionary history sdr protein family able diverge order adapt changes human nutritional demands study reveals understanding structural functional scaffolds specific sdr subgroups may facilitate design specific inhibitor
louis dehner contributed significantly understanding testicular germ cell tumors children review article considers molecular biology clinical attributes pathologic findings prognosis lesions published elsevier inc
cell patterning widely used research fundamental cell biology applications tissue engineering neuron network formation cell based biosensor drug screening although various methods developed cell patterning enclosed microfluidic device single cell level remains challenging paper describes microfluidic device microwells protein patterns paired together single microchannel easy cell patterning cells captured microwells positioned directly onto protein patterns within min patterning performance successfully demonstrated using hela cells human gallbladder carcinoma cells sgc cells survived days microchannel cell attachment migration proliferation cell colony formation observed device free topographic constraint patterned cells complex chemical modification substrate needed offering simple fast easy operate way patterning cells single cell level enclosed microfluidic channel
galactose metabolism yeast saccharomyces cerevisiae carried specialized gal pathway consisting structural regulatory proteins known cells unbalanced gal proteins accumulate toxic metabolic intermediates exhibit severe growth defects recently found molecular chaperone hsp controls abundance multiple gal proteins possibly prevent defects hsp regulates various cellular processes including cell morphology response environmental cues yeast cells known resort filamentous growth upon exposure galactose environmental stresses previous current findings support hsp titration model hsp buffering links cell morphology galactose pathways results suggest large proportion hsp molecules used help gal proteins hsp client proteins cell morphology pathways left unattended leading filamentous growth remains unclear whether phenomenon serves biological function simply reflects cellular constraint nonetheless provides alternative explanation gal pathway degenerated yeast species
kissing bug rhodnius prolixus important vector chagas disease interesting model investigation field physiology including lipid metabolism publication insect genome bring huge amount new molecular biology data used future experiments although work represents promising scenario preliminary analysis sequence data necessary identify annotate genes involved lipid metabolism used bioinformatics tools gene expression analysis explore genes different genes families pathways including genes fat breakdown lipases phospholipases enzymes beta oxidation fatty acid metabolism acyl coa glycerolipid synthesis prolixus genome encodes putative lipase genes including neutral lipases acid lipases expression profiles genes analyzed able identify nine phospholipase genes variety gene families participate fatty acid synthesis modification studied including fatty acid synthase elongase desaturase reductase concerning synthesis glycerolipids found second isoform glycerol phosphate acyltransferase ubiquitously expressed throughout organs finally genes involved fatty acid beta oxidation identified long chain acyl coa dehydrogenase results provide fundamental data used future research insect lipid metabolism possible relevance chagas disease transmission elsevier rights reserved
theory computer science based around universal turing machines utms abstract machines able execute possible algorithms modern digital computers physical embodiments classical utms important class problem computer science non deterministic polynomial complete problems non deterministic utms nutms theoretically exponentially faster classical utms quantum mechanical utms qutms however attempt previously made build nutm construction regarded impossible demonstrate first physical design nutm design based thue string rewriting systems thereby avoids limitations previous dna computing schemes computation local simple edits strings need communication need order operations design exploits dna ability replicate execute exponential number computational paths time thue rewriting step embodied dna edit implemented using novel combination polymerase chain reactions site directed mutagenesis demonstrate design works using computational modelling vitro molecular biology experimentation design thermodynamically favourable microprogramming used encode arbitrary thue rules classes thue rule implemented non deterministic rule implementation nutm resource limitation space contrasts classical utms qutms time fundamental difference enables nutmto trade space time significant theoretical computer science physics also practical importance quote richard feynman plenty room bottom means desktop dna nutm could potentially utilize processors electronic computers world combined thereby outperform world current fastest supercomputer consuming tiny fraction energy
natural killer cells major players fight viral infections transformed cells increasing evidence attributing disease promoting role cells cytokines present tumor microenvironment shape cell maturation function effector responses many cytokines signal via janus kinase jak signal transducer activator transcription stat pathway also frequently altered constitutively active broad range tumor cells consequence currently major efforts develop therapeutic strategies target pathway therefore utmost importance understand role contributions jak stat molecules cell biology knowledge allow predict effects jak stat inhibition cell functions successfully apply precision medicine review current knowledge role jak stat signaling cell functions discuss conditions involved switch cell tumor surveillance disease promotion
describe method facilitate electrophoretic separation high molecular weight rna species ribosomal rnas precursors agarose formaldehyde gels two alternative matched buffer systems substituted traditionally used mops based conductive medium key advantages include shortened run times fold reduction formaldehyde concentration significantly improved resolution long rnas consistency separation new procedure streamlined work flow helps minimize errors broadly applicable agarose gel electrophoresis rna samples subsequent analysis northern blotting elsevier inc rights reserved
riemerella anatipestifer member family flavobacteriaceae major causative agent duck serositis little known genetics pathogenesis several bacteria competent natural transformation however whether anatipestifer also competent natural transformation investigated showed anatipestifer strain atcc uptake chromosomal dna anatipestifer strain growth phases subsequently natural transformation based knockout method established anatipestifer atcc targeted mutagenesis gave transformation frequencies similar transformants competition assay experiments showed anatipestifer atcc preferentially took dna rather heterogeneous dna escherichia coli dna transformation less efficient shuttle plasmid plmf transformation frequencies similar transformants however efficiency transformation increased approximately fold using plmf derivatives containing anatipestifer dna fragments transformation frequencies similar transformants finally found anatipestifer strain also naturally transformable suggesting natural competence widely applicable species findings described provide important tools genetic manipulation anatipestifer importance riemerella anatipestifer important duck pathogen belongs family flavobacteriaceae least different serotypes identified genetic diversity demonstrated among serotypes genetic pathogenic mechanisms anatipestifer remain largely unknown genetic tools available bacterium present natural transformation found bacteria anatipestifer first time showed natural transformation occurred anatipestifer atcc anatipestifer established easy gene knockout method anatipestifer based natural transformation information important studies genetic diversity pathogenesis anatipestifer
purpose review peripheral cell lymphomas ptcls markedly heterogeneous clinical pathological molecular levels review discuss genetic findings ptcl special emphasis impact lymphoma classification recent findings sequencing studies identified recurrent genetic alterations nearly every ptcl subtype anaplastic large cell lymphoma studies revealed novel chromosomal rearrangements mutations prognostic significance may suggest new therapeutic approaches angioimmunoblastic tcell lymphoma found mutations overlapping cases ptcl otherwise specified follicular helper cell phenotype across various subtypes recurrent mutations structural alterations affecting genes involved epigenetic regulation cell receptor signaling immune response may represent targets precision therapy approaches summary new genetic findings refining classification ptcls beginning used clinically diagnosis risk stratification individualized therapy
date lemna spirodela species family lemnaceae species used produce recombinant proteins pharmaceutical veterinary purposes wolffia arrhiza evolutionarily advanced species lemnaceae rootless duckweed promising target biopharmingas candidate submerged cultivation fermenter first step toward future biotechnological use wolffia established stable transformation system based agrobacterium mediated transformation following inoculation bacteria wolffia cluster explants cultured weeks media containing dichlorophenoxyacetic acid benzyladenine explants transferred growth regulator free media presence hygromycin select antibiotic resistant plants selective agents kanamycin phosphinothricin suitable wolffia application particle bombardment delivery foreign dna wolffia explants developed agro transformation conditions yielded stably transformed lines wolffia confirmed southern blotting efficiency transgenes per explants
radical sam enzymes use deoxyadenosyl radical generated reductive cleavage adenosyl methionine catalyze distinct reaction types distinguishing feature enzymes cluster three iron ions ligated three cysteinyl residues often located motif alpha amino alpha carboxylate groups sam anchor molecule remaining iron ion presumably facilitates reductive cleavage subset enzymes contains additional iron sulfur clusters term auxiliary clusters unidentified functions enzymes subset involved cofactor biosynthesis maturation post transcriptional post translational modification enzyme activation antibiotic biosynthesis additional clusters enzymes proposed function sulfur donation electron transfer substrate anchoring review highlight evidence supporting presence multiple iron sulfur clusters enzymes well predicted roles catalysis article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
genomic dna good quality prerequisite molecular biology studies involved deciphering information contained molecules chosen studying evolutionary interrelationships among taxa genomic dna free contaminants may otherwise interfere performing pcr particularly essential isolating genomic dna gastropods due presence large amounts mucopolysaccharides tissues present study developed new method obtaining high quality genomic dna pulmonate snail achatina fulica secretes large amount mucus method obtained good quality genomic dna compatible downstream molecular biology applications like pcr sequencing rdna yield genomic dna method may extended isolating high quality genomic dna different gastropods native indian sub continent serves starting point studying phylogenetic affinities
although long established estrogen alters circadian rhythms behavior physiology reproductive functions mammals molecular mechanism effects remains unknown explore possibility estrogen affects circadian rhythms changing expression clock related genes investigated effects chronic treatment beta estradiol expression per per genes brain suprachiasmatic nucleus cerebral cortex periphery liver kidney uterus ovariectomized rats means situ hybridization northern blotting brain treatment advanced peak per mrna expression scn however failed affect rhythm per mrna expression per mrna expression scn nonreproductive peripheral tissues liver kidney delayed phase increased amplitude per mrna expression reproductive tissues uterus biphasic rhythms per per mrna observed treatment findings suggest effects estrogen different central peripheral clock brain reproductive nonreproductive tissues periphery wiley liss inc
background current guidelines recommend asthma control test act assessing disease control selecting treatment objective goal study prospectively assess act component questions utility predicting risk severe asthma exacerbations methods individuals participants study asthma phenotypes pharmacogenomic interactions race ethnicity included current analysis following characteristics age years physiciandiagnosed asthma longitudinal care received large health system southeastern michigan study participants underwent baseline evaluation included answering act severe asthma exacerbation defined one requiring oral steroids emergency department visit inpatient admission receiver operator characteristic curves used measure compare predictive utility act component questions severe asthma exacerbations results participants experienced severe asthma exacerbation within months baseline evaluation compared individual questions composed act composite score significantly better predicting severe exacerbations exception composite act score question assessing rescue medication use significantly different pharmacy based records metereddose inhaler short acting beta agonist use asthma severity also significantly different composite act score conclusions study demonstrates although act modestly predictive exacerbations composite score may superior assessing rescue medication use alone predicting risk severe asthma exacerbations american academy allergy asthma immunology
objective resistin belongs family cysteine rich secreted polypeptides mainly produced monocytes macrophages humans recently high concentrations resistin shown induce vascular endothelial dysfunction vascular smooth muscle cell proliferation examined resistin secreted macrophages locally atheromas affected vascular cell function human methods results immunohistochemical staining human vessels showed aortic aneurysms exhibited resistin positive staining areas along macrophage infiltration normal arteries veins localization resistin marker macrophages observed immunofluorescent double staining aneurysms resistin mrna expressed much higher cultured monocytcs macrophages human vascular smooth muscle cells vsmcs human umbilical venous endothelial cells huvecs suggested resistin aneurysms originates macrophages within vessels determine effects resistin atherosclerosis huvecs human vsmcs incubated resistin similar huvecs plasminogen activator inhibitor pai release assayed elisa pai endothelin mrna levels analyzed northern blotting increased significantly resistin treatment factors migratory activity vsmcs measured scratched wound assay also increased significantly times summary macrophages infiltrating atherosclerotic aneurysms secrete resistin resistin affects endothelial function vsmc migration conclusions resistin secreted macrophages may contribute atberogenesis virtue effects vascular endothelial cells smooth muscle cells humans european society cardiology published elsevier rights reserved
optimal management chronic hepatitis virus hbv infections known related genotype hbv order prescribe appropriate treatment study including chronic hbv patients parascheva clinical infectious disease hospital degrees attempted double test samples dna hbv detection genotyping dna hbv evidenced patients known chronic infected hbv tested two molecular techniques real time pcr polymerase chain reaction genotyping hybridization strips obtained identical results methods frequent genotype followed genotype samples negative probably virus suppressed replication treatment double testing accurate time cost efficient reasons propose double testing like possible algorithm routine diagnostic time efficient accurate hbv chronic infected patients management cases
purpose assess influence beta modulating migration invasion human glioma cells methods profile genes associated malignant glioma cell motility differential display polymerase chain reaction performed findings validated northern blotting umg umg umg human glioma cell lines antisense beta cdna plasmid transfected umg follow motility changes transfection simple scratch test matrigel assay performed morphological cytoskeletal changes documented light confocal microscopy addition doubling times transfectant endogenous beta levels determined various glioma cell lines different motilities results beta highly expressed umg cells cells became small flat actin depolarized furthermore cell motility inhibited markedly versus parental umg cells doubling times transfected parent cells hours respectively endogenous beta expression human glioma cell lines proportional migratory invasive abilities conclusion beta modulates migration invasion umg cells may useful developing therapeutic approaches treatment glioma
consensus cardiac stem cell biology field human embryonic stem cell derived cardiomyocytes hesc cms immature resemble human adult cardiomyocytes either phenotypically transcriptionally one striking difference hesc cms mature adult cardiomyocytes morphology hesc cms grown vitro pleomorphic shape clear sarcomere organization conversely adult cardiomyocytes rod shaped average length width aspect ratio display highly organized internal cytoskeletal structure combining multiple cues substrate stiffness topographical features may possible create physiologically relevant model better recapitulates architecture native human heart aid regenerative medicine therapies disease modeling drug testing developmental cardiotoxicity studies prior work lab used microcontact printing glass slides control cell shape improve maturation hesc cms since new work focused patterning methods compliant substrates using microcontact printing well sacrificial polyvinyl alcohol pva film proceeding advantages disadvantages methods discussed relationship hesc maturation
sweet potato ipomoea batatas lizixiang nutritious arable crop low drought tolerance growth maturation arabidopsis homeodomain glabrous hdg gene increase drought tolerance tobacco tall fescue plants determine effect hdg sweet potato transgenic plants expressed hdg gene generated agrobacterium mediated transformation expression transgene confirmed using southern blotting reverse transcription polymerase chain reaction pcr dna sequencing two independent hdg transgenic lines evaluated increased drought stress tolerance observed lines compared wild type plants drought stress conditions net photosynthesis rate efficiency excitation energy captured open psii reaction centers water use efficiency wue increased transpiration rate decreased hdg transgenic plants compared hdg transgenic plants also decreased lipid membrane oxidative damage reduced accumulation increased ros scavenging enzyme activity drought stress treatment study indicates overexpression arabidopsis hdg gene improved drought tolerance sweet potato
cdna clone eucommia ulmoides oliv encoding auxin binding protein abp one putative receptors auxin isolated seasonal expression abp relation iaa aba annual variation investigated different technical approaches including pcr real time pcr northern blotting western blotting immunolocalization cambial region abp expression protein mrna level found high low remarkably scarce active quiescent resting stages respectively cambium periodicity signal abundance abp follows opposite pattern aba accumulation correlates auxin responsiveness cambial tissues suggesting role abp mediating auxin dependent regulation cambial activation activity dormancy cycle paper attempts explain iaa would boost reactivation quiescent cambium resting cambium results also show abp expression improved iaa inhibited aba
androgen insensitivity syndrome ais characterized deficient absent virilization individuals despite normal even elevated androgen levels ais usually caused mutations androgen receptor gene aimed contrasting clinical biochemical molecular genetic characteristics three patients clinically evident partial complete ais without gene mutations expression studied cultured genital skin fibroblasts gsf western immunoblotting ligand binding analyses northern blotting semiquantitative reverse transcription polymerase chain reaction pcr pcr spanning exons gene dna sequence analyzed single strand conformation analysis ssca dna sequencing gsf revealed reduced absent ligand binding northern blots showed either slightly reduced hybridization transcript hybridization confirmed semiquantitative pcr pcr spanning exons detected single mrna bands excluding splicing errors western analyses showed either low protein ssca initially reveal molecular abnormality sequencing showed novel cag gln tag stop mutation codon previously described deletion codon leading frameshift premature stop codon intriguingly showed unaltered dna sequence coding region gene including intronexon boundaries conclusion patients clinically evident complete ais likely harbor gene mutation demanding two polymorphic regions must always included molecular analyses gene moreover data support concept subset ais patients particularly partial ais molecular alterations outside coding region gene must presumed
condyloma acuminata warty lesions caused human papilloma virus hpv generally affect external genitalia mucocutaneous junctions involvement urinary tract rare involvement urinary bladder thought due immunosuppression year old woman diagnosed urethral months renal transplantation underwent transurethral resection tur urethral lesions operation multiple sessile warty lesions found incidentally inside bladder also removed tur patient postoperative course uneventful pathological examination confirmed lesions multiplex real time polymerase chain reaction performed confirm hpv genotype revealed type hpv dna urethra uncommon bladder involvement extremely rare case first reported knowledge involve hpv type bladder condyloma tur may preferred option management urinary bladder
background analysis residual gene expression nuclear factor activated cell nfat regulated genes developed pharmacodynamic biomarker monitor therapy calcineurin inhibitors availability commercial primer sets search well established assay protocol makes biomarker promising candidate used clinically different laboratories however implementation method routine practice requires analytical robustness comparable results across laboratories therefore protocol originally established institute immunology heidelberg verified institute laboratory medicine klinikum stuttgart comparison study conducted laboratories methods analytical verification whole blood samples healthy individuals incubated tacrolimus vitro linearity imprecision limit quantification well sample stability investigated interlaboratory comparison samples patients cyclosporine therapy analyzed heidelberg reanalyzed stuttgart within hours results tacrolimus mcg decreased expression nfat regulated genes vitro dose dependently within assay coefficient variations limit quantification cdna copies interleukin interferon granulocyte macrophage colony stimulating factor genes samples stable hours interlaboratory comparison using patient samples correlated well showed inconsistent bias depending magnitude residual gene expression conclusions assay set satisfactory analytical performance routine molecular biological laboratory shows comparable results laboratories reproducibility nfat regulated gene expression assay across laboratories facilitate implementation assay pharmacodynamic routine monitoring calcineurin inhibitors different centers
lectin regarded potential molecule involved immune recognition phagocytosis opsonization crustacean knowledge lectin molecular level would help understand regulation mechanism crustacean immune system novel type lectin gene fclectin cloned hemocytes chinese shrimp fenneropenaeus chinensis rapid amplification cdna ends race pcr full length cdna consists open reading frame encoding amino acids deduced amino acid sequence contains putative signal peptide amino acids also contains two carbohydrate recognition domains type lectin like domains crd crd share identity crd crd showed identity mannose binding lectin japanese lamprey lethenteron japonicum respectively crd crd fclectin amino acids residues relatively invariant animals type lectin crds five residues binding site conserved fclectin potential carbohydrate binding site motif qpd gln pro asp glu asn pro presented two crds fclectin may support ability bind galactose type sugars could deduced fclectin member type lectin superfamily transcripts fclectin found hemocytes northern blotting rna situ hybridization variation mrna transcription level hemocytes artificial infection bacteria white spot syndrome virus wssv quantitated capillary electrophoresis pcr exploration mrna expression variation lps stimulation carried primarily cultured hemocytes vitro expression profiles fclectin gene greatly modified bacteria lps wssv challenge stated data provide clues understand probable role type lectin innate immunity shrimp would helpful shrimp disease control elsevier ltd rights reserved
overall analysis understanding mechanisms great importance treatment infantile pneumonia due high morbidity mortality worldwide study preliminarily explored function mechanism focal adhesion kinase fak regulation inflammatory response induced lipopolysaccharides cells flow cytometry dimethylthiazol diphenyltetrazolium bromide mtt assay quantitative reverse transcription polymerase chain reaction western blot analysis used explore correlation fak expression cell apoptosis viability inflammatory cytokine activity cells results showed knockdown fak enhanced cell viability suppressed apoptosis decreased inflammatory cytokine activity addition downregulation fak could activate wnt nuclear factor kappa signaling pathways findings suggest fak might involved progression infantile pneumonia could new therapeutic target disease
prostatic hyperplasia common urologic disease affects mostly elderly men classified benign prostatic hyperplasia bph prostate cancer pca based severity oxidative stress known influence activities inflammatory mediators cellular processes involved initiation promotion progression human neoplasms including prostate cancer scientific evidence also suggests micronutrient supplementation may restore antioxidant status hence improve clinical outcomes patients bph pca review highlights recent studies prostate hyperplasia carcinogenesis examines role molecular pathology prostate cancer progression treatment
background carbohydrates also called glycans play crucial fully understood role plant health development non template driven formation glycans makes impossible image vivo genetically encoded fluorescent tags related molecular biology approaches solution problem use tailor made glycan analogs metabolically incorporated plant glycans metabolically incorporated probes visualized techniques documented far use toxic copper catalyzed labeling expand knowledge plant glycobiology direct imaging glycans via method need novel click compatible glycan analogs plants bioorthogonally labelled via copper free techniques results arabidopsis seedlings incubated azido containing monosaccharide analogs acetylglucosamine acetylgalactosamine fucose arabinofuranose azido monosaccharides metabolically incorporated plant cell wall glycans arabidopsis seedlings control experiments indicated active metabolic incorporation azido monosaccharide analogs glycans rather non specific absorption glycan analogs onto plant cell wall successful copper free labeling reactions performed namely inverse electron demand diels alder cycloaddition reaction using incorporated acetylglucosamine analog strain promoted azide alkyne click reaction evaluated azido monosaccharide analogs observed non toxic used concentrations normal growth conditions conclusions results metabolic incorporation fluorescent labeling azido monosaccharide analogs expand possibilities studying plant glycans direct imaging overall successfully evaluated five azido monosaccharide analogs ability metabolically incorporated arabidopsis roots imaging fluorescent labeling expands molecular toolbox direct glycan imaging plants three eight glycan analogs enables extensive future studies spatiotemporal glycan dynamics wide variety plant tissues species also show first time metabolic labeling imaging plant glycans potential two copper free click chemistry methods bio orthogonal lead uniform labeling improved labeling methods generalized extended already existing future click chemistry enabled monosaccharide analogs arabidopsis
background increased expression hepatocyte growth factor hgf met proto oncogene met associated poor prognosis various cancer types recently reported expression hgf induces resistance tyrosine kinase inhibitors tkis targeting epidermal growth factor receptor human epidermal receptor receptor raf proto oncogene investigated effects hgf overexpression gastric cancer cells absence presence met tkis materials methods effects met tkis gastric cancer cells without met overexpression determined gastric cancer cell lines various cell biology methods results compared control cells induced expression hgf showed increase anchorage independent colony formation met tkis inhibited hgf met downstream signaling cell proliferation migration invasion triggered cell cycle arrest hst cells however hgftransfected cells less affected conclusion met tkis inhibitory effects cells overexpressing met furthermore overexpression hgf resulted resistance cmet tkis autocrine manner gastric cancer cells
vascular disease atherosclerosis diabetic vasculopathy frequently complicated vascular calcification previously believed end stage process unregulated mineral precipitation well established multi faceted disease influenced characteristics vascular location origins calcifying cells numerous regulatory pathways reflects fundamental plasticity vasculature gradually revealed progress vascular stem cell biology review provides brief overview stand understanding vascular calcification facing challenge translating knowledge viable preventive therapeutic strategies elsevier inc rights reserved
cdna encoding protease perinereis aibuhitensis grube ppa cloned deduced amino acid sequence analysis showed protein identity terminal amino acid serine protease heterodera glycines northern blotting analysis indicated cdna could hybridize mrna approximately bases isolated marine earthworm cdna amplified polymerase chain reaction cloned pmal construct expression vector pmal ppa pmal ppa introduced escherichia coli overexpression ppa fused maltose binding protein achieved isopropyl beta thiogalactopyranoside induction fusion protein purified affinity chromatography amylose resin column ion exchange chromatography diethylaminoethyl sepharose column rabbits immunized purified protein antiserum prepared antibody could react protein approximately kda extracted marine earthworm shown western blotting analysis activity analysis recombinant ppa suggested probably plasminogen activator
analytical methodology speciation metals metalloids associated alkyl groups biomacromolecules critically reviewed alkylated metals metalloids known produced microbial methylation within anaerobic compartments environment also course enzymatic transformations human metabolism toxicological relevance compounds present trace ultratrace concentrations firm species identification exact quantification essential many instrumental techniques coupling chromatography hplc plasma mass spectrometry icp available quantification methods used structural identification often suffer inadequate sensitivity esi maldi icrms problems encountered sample derivatisation artefacts lack suitable standards quantification lack equilibrium spikes sample integrity metal protein association separation particular sds page selected application examples respect mercury arsenic speciation discussed critically
maximizing benefit human pluripotent stem cells hpscs research disease modeling pharmaceutical clinical applications requires robust methods large scale production functional cell types including cardiomyocytes demonstrate temporal manipulation wnt tgf beta shh signaling pathways leads highly efficient cardiomyocyte differentiation single cell passaged hpsc lines static suspension stirred suspension bioreactor systems employing strategy resulted similar beating spheroids consistently containing cardiac troponin positive cells days culture validated multiple hpsc lines also report variation protocol use cell lines currently adapted single cell passaging success verified hpsc lines cardiomyocytes generated using protocols express lineage specific markers show expected electrophysiological functionalities protocol presents simple efficient robust platform large scale production human cardiomyocytes
thiols particular glutathione gsh play central role human metabolism including detoxification xenobiotics cell homeostasis radioprotection antioxidant defence new method provided measurement reduced total forms thiols red blood cells order minimize oxidation reduced thiols water erythrocyte lysis min deg performed followed protein precipitation step acetonitrile supernatant rapidly derivatized iodoacetoamidefluorescein trapped thiol groups thus minimizing auto oxidation derivatized samples separated capillary using mmol sodium phosphate mmol boric acid electrolyte solution mmol methyl glucamine conditions cysteinylglycine cysgly cysteine cys glutathione gamma glutamylcysteine glucys baseline resolved sim min precision tests showed good repeatability method migration times coefficient variation areas furthermore good reproducibility intrassay interassay tests obtained respectively method employed investigate effect acidic precipitation intracellular thiol concentration data suggest sample acidification causes modification measured redox thiol status due development pro oxidant environment moreover thiol redox status red blood cells evaluated healthy volunteers
unwanted immune responses therapeutic proteins severely impact safety efficacy studies show presence trace amounts host cells process related impurities stimulate pattern recognition receptors prr cause local inflammation enhance product immunogenicity used purified prr agonists model impurities assess minimal level individual innate immune response modulating impurities iirmis could activate local immune response show levels endotoxin low polyinosinic polycytidylic acid polyi synthetic diacylated liopprotein thiazoloquinolone compound muramyl dipeptide flagellin glucan cpg oligodeoxynucleotide increased expression genes linked innate immune activation inflammatory processes skin rhesusmacaques furthermore spiking studies using rasburicase model therapeutic showed levels prr agonists induced detectable gene upregulation skin associated increased immunogenicity rasburicase study underscores need testing multiple iirmis biologics strengthening connection local mrna induction skin innate immune activation antibody development primates provides indication levels iirmi therapeutic products could impact product immunogenicity published elsevier inc behalf american pharmacists association
concept heavy metal used toxic toxic metal heavy metals effective high density low concentrations systems action mechanism heavy metals depends concentration effects heavy metal vary depending nature species metal ions complex organisms yeast effects microelements often research subject recent years addition preventing disease effect heavy metals chromium copper chromium lead aluminum animal human metabolism effects yeast metabolism subject scientific studies study revealed effects heavy metal chromium lead copper aluminum toxicity mda fatty acids vitamin phytosterols cerevisiae addition study demonstrated effects heavy metal toxicity antioxidant systems removal heavy metal toxicity cerevisiae via antioxidant systems great importance removal heavy metal toxicity living organisms avoid heavy metals especially increase mda levels showed accumulation heavy metals caused severe damage living cells difficult explain principles antioxidant defense system living organisms antioxidant defense system affected environmental changes therefore different results obtained cerevisiae cells results present study showed different heavy metals different effects antioxidant defense system
full length beet black scorch virus bbsv cdna clone pubf constructed pcr clone contains upstream rna polymerase promoter designed vitro transcription infectious rnas linearized plasmid faithfully represent viral cdna leaves chenopodium amaranticolor inoculated vitro transcripts developed symptoms disease phenotype wild type virus presence bbsv rna coat protein leaves confirmed respectively northern blotting western blotting comparisons specific immunoreactions expression product bbsv gene coli antiserum purified bbsv virions demonstrated gene encodes coat protein based sequence pubf cdna frame shift mutant two deletion mutants generated one deletions encompasses entire orf truncates amino acids central region protein transcripts derived frame shift mutant terminates first amino acids elicited symptom phenotype levels rna accumulation wild type virus leaves infected deletion mutants exhibited greatly reduced rna accumulation addition leaves inoculated vitro transcripts mutant entire gene deleted lower local lesions wild type virus transcripts two expression vectors pbgfp pbgus constructed fusing gfp gus genes terminal amino acids gene respectively leaves infected vitro transcripts pbgfp pbgus exhibited expression gfp gus proteins assessed laser confocal microscopy histochemical staining respectively high levels expression gfp gus proteins provide tools used studies replication movement virus indicate bbsv considerable biotechnology potential plant virus expression vehicle
contrast fat soluble vitamins dietary vitamin rapidly lost body resulting comparatively low tissue stores deficiency kept bay ubiquity vitamin diet synthesis gut microflora species relatively low vitamin cofactor requirements gamma glutamyl carboxylation however shown fatal neonatal bleeding mice lack vitamin epoxide reductase vkor low requirements dependent ability animals regenerate vitamin epoxide metabolite via vitamin cycle identification genes encoding vkor paralog vkor like vkorl accelerated understanding enzymology salvage pathway parallel novel human enzyme participates cellular conversion phylloquinone menaquinone identified ubia prenyltransferase containing domain ubiad recent studies suggest side chain cleavage oral phylloquinone occurs intestine menadione circulating precursor tissue jlr mechanisms functions vitamin recycling synthesis dominated advances made vitamin biochemistry last five years brief overview general metabolism main focuses review
forkhead box foxo foxo interferon regulatory factor irf linked inhibitor apoptosis protein xiap like factor elf described important regulators cell functions differentiation however whether molecules associated hiv disease progression still unknown study showed levels foxo irf xiap mrna rapid progressors rps significantly higher hiv negative healthy controls hcs moreover foxo expression positively correlated hiv viral load cell activation remarkably increased cell activation apparent rps compared typical progressors hcs addition profile higher apoptosis cells fewer naive cells observed early hiv infection patients low cell counts furthermore vitro irf xiap expression enhanced peripheral blood mononuclear cells healthy people following cell receptor stimulation cell activation decreased treatment sirna inhibiting foxo irf xiap results show significantly increased levels foxo irf xiap mrna chinese hiv infected patients related cell immune activation implicating potential targets developing new therapeutic avenues slow hiv disease progression
background anderson fabry disease linked defect glycosphingolipid metabolism progressive renal insufficiency major source morbidity additional complications result cardio cerebro vascular involvement survival reduced among affected males symptomatic female carriers objectives evaluate effectiveness safety enzyme replacement therapy compared interventions placebo interventions treating anderson fabry disease search methods searched clinical trials cochrane library medline embase lilacs cystic fibrosis genetic disorders group inborn errors metabolism trials register date recent search september original search performed september date recent search cystic fibrosis genetic disorders group inborn errors metabolism trials register september selection criteria randomized controlled trials agalsidase alfa beta participants diagnosed anderson fabry disease data collection analysis two authors selected relevant trials assessed methodological quality extracted data main results six trials comparing either agalsidase alfa beta participants fulfilled selection criteria trials comparing agalsidase alfa placebo reported globotriaosylceramide concentration plasma tissue aggregate results non significant one trial reported pain scores statistically significant improvement participants receiving treatment three months mean difference confidence interval five months mean difference six months mean difference significant difference pain related quality life five months six months mean difference time points neither trial reported deaths one three trials comparing agalsidase beta placebo reported globotriaosylceramide concentration plasma tissue showed significant improvement kidney mean difference heart mean difference composite results renal cardiac cerebrovascular complications death mean difference significant difference groups death trials reported pain one trial compared agalsidase alfa agalsidase beta significant difference groups adverse events risk ratio serious adverse events risk ratio authors conclusions six small poor quality randomised controlled trials provide robust evidence use either agalsidase alfa beta treat anderson fabry disease
leprosy chronic infectious disease caused mycobacterium leprae according official reports countries across five regions newly diagnosed cases although leprosy affects skin peripheral nerves present across spectrum clinical histopathological forms strongly influenced immune response infected individuals forms comprise extremes tuberculoid leprosy leprae specific also response limits leprae multiplication lepromatous leprosy leprae specific regulatory responses control leprae replication rather allow bacterial dissemination interpolar borderline clinical forms present similar less extreme immune biases acute inflammatory episodes known leprosy reactions complications may occur treatment cause neurological damages cause irreversible chronic disabilities review discusses innate adaptive immune responses interactions known affect pathogenesis influence clinical outcome leprosy
introduction sweetener agents substances used currently replacement sugar within human regular diet article review effects human metabolism health description appearance interest beneficial effects attributed sweetener agents jobs increasingly numerous however studies appear confirm ineffectiveness use even show specific causal association various metabolic pathologies obesity diabetes mellitus consumption sweetener agents conclusions neccesary research direction provide convincing data consequences needs special children pregnant women groups deepening well absence negative effects resulting use food
lymphocyte proliferation response antigenic mitogenic stimulation readily quantifiable phenomenon useful testing immunomodulatory immunosuppressive immunostimulatory chemical compounds biologics one earliest steps mitogenesis cell enlargement blastogenic transformation whereupon cell volume increases division usually detectable first several hours lymphocyte stimulation describe rapid method quantify blastogenesis lymphocytes isolated mouse spleens human peripheral blood mononuclear cells pbmcs using automated cell counter various commonly used proliferation assays part laborious reflect overall population effect rather individual cellular effects within population contrast presented automated cell counter assay provides rapid direct precise measurements cell diameters used assessing effectiveness various mitogens immunomodulatory drugs vitro
upon apoptotic stimuli lysosomal proteases including cathepsins chymotrypsin released cytosol due lysosomal membrane permeabilization lmp trigger apoptosis via lysosomal mitochondrial pathway apoptosis herein mechanism lmp investigated found caspase cleaved bid tbid could result lmp directly although bax bak might modestly enhance tbid triggered lmp necessary lmp study large unilamellar vesicles luvs model membranes mimicking lipid constitution lysosomes used reconstitute membrane permeabilization process vitro found phosphatidic acid one major acidic phospholipids found lysosome membrane essential tbid induced lmp facilitates insertion tbid deeply lipid bilayers undergoes homo oligomerization triggers formation highly curved nonbilayer lipid phases events induce lmp via pore formation mechanisms encapsulated fluorescein conjugated dextran released significantly luvs due smaller molecular size basis data proposed tbid interactions lysosomal membranes form lipidic pores result lmp noted chymotrypsin cleaved bid potent tbid binding inserting lipid bilayer promoting lmp amplification mechanism likely contributes culmination apoptotic signaling zhao zhou zhao wolff liu wei yang phosphatidic acid mediates targeting tbid induce lysosomal membrane permeabilization apoptosis lipid res
background genomic selection uses information genomic signatures consisting thousands genetic markers predict complex traits represents promising approach accelerate tree breeding especially relevant genetic improvement boreal conifers characterized long breeding cycles present study tested advanced breeding population boreal black spruce picea mariana mill bsp growth wood quality traits concurrently examined factors affecting model accuracy results study relied year old trees belonging full sib families derived parents established two contrasting sites genomic profiles obtained single nucleotide polymorphisms snps representative many gene loci distributed among linkage groups common spruce models obtained four growth wood traits validation using independent sets trees showed model accuracy high related trait heritability equivalent conventional pedigree based models forward selection gains per unit time three times higher approach conventional selection addition models also accurate across sites indicating little genotype environment interaction area investigated using information half sibs instead full sibs led significant reduction model accuracy indicating inclusion relatedness model contributed higher accuracies markers sufficient obtain model accuracy almost equivalent obtained markers whether well spread across genome single linkage group confirming implication relatedness potential longrange linkage disequilibrium high accuracy estimates obtained slightly higher model accuracy obtained using marker subsets identified carry large effects indicating minor role short range population conclusions study supports integration models advanced generation tree breeding programs given high genomic prediction accuracy obtained relatively small number markers due high relatedness family structure population boreal spruce breeding programs similar ones long breeding cycles much larger gain per unit time obtained genomic selection early age conventional approach thus appears highly profitable especially context forward selection species amenable mass vegetative propagation selected stock spruces
novel bovine cdna isolated est assembly subsequently confirmed using pcr designated bovine cell activating factor belonging tnf family bbaff open reading frame orf cdna covers encoding amino acids functional soluble part bbaff bsbaff shows identity pig human counterparts respectively level primary protein structure bbaff genomic sequence consists six exons five introns approximately size maps bovine chromosome southern blotting analysis indicated bbaff gene single copy gene real time quantitative pcr qpcr analysis revealed bbaff predominantly expressed bovine lymphoid tissues pbls spleen predicted three dimensional structure bsbaff monomer analyzed comparative protein modeling revealed similar human counterpart western blotting analysis tagged bsbaff protein expressed coli could recognized anti tag also anti human sbaff mab indicating immunological cross reactivity occurs bovine human sbaff protein elsevier rights reserved
due fact biological processes occur aqueous environment interactions biomolecules water fundamental importance among interactions proton transfer intriguing essential process carried coordinated cooperative motion water molecules use dielectric spectroscopy measure relative permittivity dielectric loss different amino acid solutions region low frequencies mhz found case glutamic acid fast transfer charge possibly facilitated proton wires similar behaviour obtained ovalbumin glutamic acid important constituent findings could shed light improve understanding water biomolecules interactions drive main functions cell elsevier rights reserved
methylmalonic aciduria mma uria autosomal recessive inborn error amino acid metabolism involving valine threonine isoleucine methionine organic aciduria may present neonatal period life threatening metabolic acidosis hyperammonemia feeding difficulties pancytopenia coma affected patients mutations methylmalonyl coenzyme methylmalonyl coa mutase gene mildly affected patients may present childhood failure thrive recurrent attacks metabolic acidosis higher residual activity methylmalonyl coa mutase well vitamin responsive defects cbla cblb may form basis mild disorder patients moderate mma uria known defect could identified present year old female patient persisting moderate mma uria similar mmol mol creatinine born consanguineous caucasian parents fibroblast mutase activity normal effect vitamin supplementation could established reduced incorporation propionate macromolecules suggested defect propionate succinate pathway found homozygous nonsense mutation methylmalonyl coa epimerase gene mcee resulting early terminating signal parents heterozygous mutation found excrete normal amounts methylmalonic acid mma first report methylmalonyt coa epimerase deficiency thereby unequivocally demonstrating biochemical role enzyme human metabolism hum mutat wiley liss inc
background renal syndromes occasionally reported domestic animals two identical twin tyrolean grey calves exhibited weight loss skeletal abnormalities delayed development associated kidney abnormalities formation uroliths signs resembled inherited renal tubular dysplasia found japanese black cattle associated mutations claudin gene despite demonstrating striking phenotypic similarities obvious presence pathogenic variants candidate gene found therefore analysis required decipher genetic etiology condition results family history cases suggested possibility autosomal recessive inheritance homozygosity mapping combined sequencing whole genome one case detected two associated non synonymous private coding variants homozygous missense variant uncharacterized kiaa gene located sized region homozygosity bta homozygous deletion molybdenum cofactor sulfurase mocos gene delc delg delg located region homozygosity bta pathogenic variants mocos previously associated inherited metabolic syndromes xanthinuria different species including japanese black cattle genotyping two additional clinically suspicious cases confirmed association mocos variant animals homozygous mutant genotype show variant kiaa allele identified genomic deletion predicted highly disruptive creating frameshift premature termination translation resulting severely truncated mocos proteins lack two functionally essential domains variant mocos allele absent cattle breeds approximately carriers detected among genotyped tyrolean grey cattle biochemical urolith analysis one case revealed presence approximately xanthine conclusions identified mocos loss function variant highly likely cause renal syndrome affected animals results suggest phenotypic features renal syndrome related early onset form xanthinuria highly likely lead progressive defects identification candidate causative mutation thus enables selection pathogenic variant tyrolean grey cattle
response surface methodology rsm used model optimize immobilized candida antarctica lipase catalysed synthesis butyl methyl oxopentanoate determine optimum conditions transesterification four factor five level central composite rotatable design ccrd used factors studied enzyme load reaction temperature methyl methyl oxopentanoate concentration butanol concentration quadratic polynomial regression model used analyze experimental data confidence level results indicated rsm approach gave reasonable results optimization reaction parameters range tested parameters optimal conditions enzymatic reaction obtained mol methyl methyl oxopentanoate mol butanol using novozym degrees rpm conditions transesterification percentage kinetic modelling enzymatic synthesis illustrated initial rate data progress curve data used arrive suitable model kinetics found obey ternary complex ordered model inhibition substrate methyl methyl oxopentanoate values kinetic parameters obtained nonlinear regression analysis found vmax mol min mol mol mol
anti tumor necrosis factor tnf antibodies successfully used therapy inflammatory bowel diseases ibd however molecular mechanism action agents still matter debate apart neutralization tnf influence intestinal barrier function induction apoptosis mucosal immune cells formation regulatory macrophages well immune modulating properties discussed central features nevertheless clinically effective anti tnf antibodies shown differ mode action vivo vitro furthermore anti tnf agent etanercept effective treatment rheumatoid arthritis failed induce clinical response crohn disease patients suggesting different contributions tnf pathogenesis inflammatory diseases following review different aspects regarding mechanism action anti tnf agents general analyze comparatively different effects anti tnf agent tnf neutralization modulation immune system reverse signaling induction apoptosis discuss relevance membrane bound form tnf compared soluble form immunopathogenesis ibd furthermore review reports could lead personalized medicine approaches regarding treatment anti tnf antibodies chronic intestinal inflammation predicting response therapy author published baishideng publishing group inc rights reserved
cyclists tour france endurance specialists twin family studies shown approximately variance number performance related phenotypes whether measured baseline natural talent response training including important cycling explained genetic variation research specific genetic variants responsible identified genes containing common genetic variants involved genetic predisposition physical performance however typically explain small portion variance perhaps collectively rarely explain anything approaching variance identified twin family studies thus gap understanding relationship heritability performance gap may bridged investigation rare variants epigenetic variation altering study designs increased collaborations pool existing cohorts together initial findings efforts show promising results mini review touch genetics epigenetics sporting performance relate cyclists tour france best future efforts may directed well discuss preliminary research findings
laxative senna products several specific components submitted large number genetic tests studies gave negative responses results studies suggest components senna products particularly emodin aloe emodin genotoxic activity assessment genotoxicity profile substances light data animal human metabolism kinetic studies human clinical trials rodent carcinogenicity studies support concerns senna laxatives pose genotoxic risk humans consumed prescribed use conditions wiley liss inc
nonribosomal peptides nrps large family natural products possess numerous pharmaceutically significant bioactivities however many native microbial producers nrps cultivable low production yields making mass production infeasible recombinant production natural products surrogate host emerged strategy overcome limitations novo recombinant production nrp antibiotic valinomycin engineered escherichia coli host strain established necessary biosynthetic pathway constituents streptomyces tsusimaensis present study initially modest valinomycin yields could significantly increased switching batch enzyme based fed batch mode shake flasks subsequent design experiment driven optimization parallel fed batch cultivations well plates online monitoring dissolved oxygen led valinomycin yields finally repeated glucose polymer feeding enzyme based high cell density cultivations shake flasks resulted cell densities valinomycin titer appr represents fold improvement compared initial batch cultivations highest concentration nonribosomal peptide produced coli without feeding specific precursors far knowledge also small scale optimization fed batch conditions may generally applicable development scale natural product production processes coli
telomere dysfunction believed significant factor carcinogenesis elucidate carcinogenesis mechanism gastric cancer expression telomeric proteins changes telomere length investigated multistage carcinogenesis gastric cancer tissue samples obtained surgical operations normal gastric mucosa patients precancerous lesions patients gastric cancer tissues patients tumors due gastric cancer lymph node metastasis gclm patients expression trf trf tin proteins measured western blotting expression tert brca proteins detected using immunohistochemical method mean telomere length determined southern blotting compared normal gastric mucosa tissues expression trf trf tin proteins significantly higher precancerous lesions gclm expression trf trf tin proteins significantly higher gclm precancerous lesions expression tert proteins precancerous lesions tissues significantly higher normal gastric mucosa tissues expression tert proteins tissues significantly higher precancerous lesions normal gastric mucosa brca protein primarily located cell nucleus precancerous lesions expression brca protein apparent cell cytoplasm mean telomere length precancerous lesions gclm significantly shorter normal gastric mucosa tissues mean telomere length gclm significantly shorter precancerous lesions mean telomere length tissue samples inversely correlated level trf trf tin tert proteins results suggest expression telomeric proteins trf trf tin tert transposition brca protein may work together reduce telomere length precancerous lesions gastric cancer could contribute multistage carcinogenesis gastric cancer findings offer new insight mechanism carcinogenesis gastric cancer
disease resistant genes play important role defending variety pathogens insect pests plants disease resistant genes encode proteins conserved leucine rich repeat nucleotide binding site domains study cloned characterized gene resistant analogs rgas eucalyptus grandis using degenerate pcr primers specifically targeting two domains amplified fragments cloned pgem vector transformed escherichia coli among clones obtained sequenced compared previously identified gene resistant diseases blastx search genbank revealed high similarities among conserved domains cloned genes rga genes clones however showed significant similarity dna sequences genbank southern blotting analysis identified several polymorphic rflp loci distinct genotypes however none segregated puccinia psidii winter resistance gene ppr population study
microbially induced corrosion mic identified main cause rupture key heat exchanger shell local refinery failure occurred clock position close girth weld halfway along length carbon steel shell ultrasonic survey revealed wall thinning ruptured zone despite extensive crystallization external cooling seawater inlet cooling system tubing evidence internal leakage seawater shell compartment total dissolved solids condensate dropout sample found investigation also confirmed girth weld satisfactorily conducted including post heat treatment failure occurred outside heat affected zone haz quantitative polymerase chain reaction qpcr analysis dry surface film crack ruptured area confirmed suitability operating environment prokaryotic growth presence groups highly corrosive acid producing bacteria apb denitrifying bacteria dnb moderate numbers apb dnb respectively colonization different groups corrosion causing bacteria sour system resulted localized generation highly aggressive metabolic products causing substantial loss wall thickness heat exchanger shell localized wall thinning original thickness led loss pressure retention capacity shell rupture wall elsevier ltd rights reserved
anti vitamin avks widely used control rodent populations inhibit vitamin regeneration vitamin epoxide reductase vkor cause fatal hemorrhagic syndrome repeated use populations commensal rodents expressed resistance compounds franche comt france water vole exhibits cyclic population outbreaks second generation avk bromadiolone used last years control vole populations aim study determine whether repeated treatments could led development resistance avks water vole populations conducted enzymatic genetic studies water voles trapped treated non treated plot results indicate voles heavily treated area exhibit enzymatic changes vkor activity hence arguing resistance avks intronic haplotype vkorc gene seems associated enzymatic changes
sphingoid base derivatives attracted increasing attention promising chemotherapeutic candidates lifestyle diseases diabetes cancer natural sphingoid bases potential resource instead derived time consuming total organic synthesis particular glucosylceramides glccers food plants enriched sources sphingoid bases differing animals several chemical methodologies transform glccers sphingoid bases already investigated however conventional methods using acid alkaline hydrolysis efficient due poor reaction yield producing complex products resulting separation problems study extremely efficient practical chemoenzymatic transformation method developed using microwave enhanced butanolysis glccers large amount readily available almond beta glucosidase deglycosylation reaction lysoglccers method superior conventional acid base hydrolysis methods rapidity reaction cleanness isomerization rearrangement excellent overall yield
present study investigated effect endothelin precursor big mmp matrix metal loproteinase mmp synthesis activity osteosarcoma tissue receptor antagonists cell invasion using western blotting zymography pcr reverse transcription pcr immunohistochemistry immunofluorescence northern blotting shown receptors eta etb expressed cells additionally demonstrated markedly induced synthesis activity mmp significantly increased compared mmp furthermore inhibition kappa nuclear factor kappa activation blocked mmp production activity indicating involvement kappa ubiquitous transcription factor playing central role differentiation proliferation malignant transformation since acts autocrine mediator gelatinase induction inhibition eta receptor beneficial reducing basal induced osteosarcoma cell invasion targeting receptor could attractive therapeutic alternative successful treatment osteosarcoma
crustaceans fascinating processes maturation reproductive molting carapace coloration regulated hydrophobic molecules interestingly molecules ligands lipocalin understand role lipocalin aforementioned processes molecular level isolated cdna belongs lipocalin family central nervous system cdna library macrobrachium rosenbergii monitored spatial temporal distributions mrna using northern blotting analysis results demonstrated gene expresses abundantly subepidermal adipose tissue faintly hepatopancreas central nervous system however signal detected tissues including muscle gill ovary expression levels subepidermal adipose tissue various stages maturation well whole molting cycle showed prawn lipocalin involved sexual maturation maximal level observed molt published elsevier inc
study stress protein response unaccustomed maximal eccentric exercise humans investigated eleven healthy males performed maximal eccentric actions quadriceps muscle biopsies vastus lateralis collected min exercise cellular regulation localization heat shock protein hsp alpha crystallin hsp analyzed immunohistochemistry elisa technique western blotting additionally mrna levels hsp alpha crystallin hsp quantified northern blotting exercise min myofibers showed strong hsp staining gradually decreased following week alpha crystallin mimicked changes observed hsp exercise min elisa analysis showed reduction hsp level cytosolic fraction whereas western blotting revealed fold increase hsp level myofibrillar fraction cytosolic hsp level increased control level exercise days myofibrillar bound hsp increased similar fold accompanied strong staining cross sections mrna levels hsp alpha crystallin hsp elevated first day exercise hsp mrna showed largest increase fold hsp alpha crystallin seemed respond immediately maximal eccentric exercise binding cytoskeletal myofibrillar proteins probably function stabilizers disrupted myofibrillar structures later mrna total hsp protein levels especially hsp increased indicating hsps play role skeletal muscle recovery remodeling adaptation processes high force exercise
objective leptin product gene hormone secreted adipocytes study aimed measure serum concentrations leptin normal weight subjects body mass index obese subjects body mass index greater equal designed support important role leptin human metabolism obesity methods one hundred lean subjects aged years obese subjects aged years obese non insulin dependent diabetes aged years included study obesity defined body mass index greater equal serum leptin concentrations measured using newly developed radioimmunoassay results mean serum leptin concentrations per milliliter obese subjects per milliliter normal weight subjects less equal serum leptin concentrations specimens lean obese adults correlated directly body mass index body mass index less equal correlations significantly improved separating results gender men women less equal conclusions findings showed large differences leptin concentrations normal obese subjects progressive increase leptin concentration increasing body mass index results strongly support important role leptin human metabolism obesity leptin may simply reflect size adipose tissue stores
meiotic recombination triggered programmed dna double strand breaks dsbs catalyzed spo protein type topoisomerase like manner meiotic dsbs detected directly using physical assays gel electrophoresis southern blotting indirect end labeling applied samples genomic dna sporulating cultures budding fission yeast assays extremely useful quantifying characterizing many aspects initiation meiotic recombination including timing dsb formation relative events distribution dsbs across genomic influence dsb formation mutations recombination factors gene products varying type gel electrophoresis parameters spatial resolution dsb analysis range single nucleotides whole yeast chromosomes
wolbachia naturally infects wide variety arthropods plays important roles host reproduction previously reported wolbachia infect silkworm means pcr sequencing found study wolbachia indeed present silkworm phylogenetic analysis indicates wolbachia infection silkworm may occurred via transfer parasitic wasps furthermore southern blotting results suggest lateral transfer wsp gene genomes wild silkworms antibiotic treatments found tetracycline ciprofloxacin eliminate wolbachia silkworm wolbachia important ovary development silkworm results provide clues towards comprehensive understanding interaction wolbachia silkworm possibly lepidopteran insects
changes gastrointestinal microbial community frequently associated chronic diseases inflammatory bowel diseases however understanding relationship individual taxon within community host physiology made complex due diversity individuality gut microbiota defined microbial communities altered schaedler flora asf help alleviate challenges diverse microbiota allowing one interrogate relationship individual bacterial species host responses important aspect studying relationships defined microbial communities ability measure population abundance dynamics member herein describe development improved asf species specific sensitive real time quantitative polymerase chain reaction qpcr use sybr green chemistry accurately assess individual asf member abundance approach targets hypervariable regions rrna gene asf taxon enhance assay specificity demonstrate reproducibility sensitivity application new method quantifying asf bacterium two inbred mouse lines also used assess changes asf member abundance acute antibiotic perturbation community well mice fed two different diets additionally describe nested pcr assay detection lowly abundant asf members altogether improved qpcr method facilitate gnotobiotic research involving asf community allowing reproducible quantification members various physiological conditions elsevier rights reserved
background using community based participatory research health protection model used understand cultural experiences attitudes knowledge behaviors surrounding caries etiology prevention barriers accessing oral health care children latino parents residing central indiana methods community reference group cbpr established lingual community research associates used conduct focus groups comprised latino caregivers transcripts analyzed thematic content using inductive thematic analysis results results indicated significant gaps parental knowledge regarding caries etiology prevention cultural underlays parents believed etiology caries related child ingestion certain foods containing high amounts carbohydrates fewer parents believed either genetics biological inheritance bacteria primary causative factor fatalism negatively impacted preventive practices clear separation existed concerning perceived responsibilities mothers fathers provide oral needs children females likely report primarily responsible brushing children teeth overseeing child diet seeking dental care child fathers believed primarily responsible providing means pay professional care perceived barriers care related finances communication difficulties especially communicating providers completing insurance forms conclusion main study implication demonstration cbpr model provided enhanced understanding latino caregivers experiences inform improvements oral prevention treatment children current efforts continue employ cbpr implement programs address needs vulnerable population
sudden emergence worldwide adoption crispr gene editing technology confronts humanity unprecedented opportunities choices crispr transformative impact future understanding biology along potential unleash control fundamental biological processes predictable already achieved applications although origin composition function revealed recently close crispr based publications appeared including insightful diversely focused reviews referenced adding scientific public awareness recent symposium addressed ethical implications interfacing crispr technology human biology however magnitude crispr rapidly emerging power mandates broadest assessment participation diverse informed community effective humanity positive crispr applications defined brief review aimed little previous exposure thecrispr revolution molecules constitute crispr core components functional organization described along howthe mechanism harnessedto edit genome structure modulate gene function additionally glimpse crispr potential unleash genetic changes far reaching consequences presented
increased interest reduced low sodium dairy foods generates flavor issues cheeses sodium partly replaced potassium calcium sustain salty flavor perception cations may also alter metabolic routes resulting flavor development aged cheeses effect cations selected metabolic enzyme activity lactic acid bacterial physiology enzymology documented potassium example activator enzymes inhibits enzymes currently visualize effects cations lists inside metabolic databases metacyc visualizing impact activating inhibitory activities biochemical pathways inside metabolic database understand relevance predict eventually dictate aging process cheeses cations replace sodium examples reconstructed new metabolic databases illustrate effect potassium flavor related enzymes microbial pathways metabolic reconstruction analysis found pathways lactic acid bacteria affected due enzymes likely activated inactivated potassium pathways primarily linked sugar metabolism acid production amino acid biosynthesis degradation relate cheddar cheese flavor
enzymatic inhibition product molecules important widespread phenomenon describe approach study product inhibition single molecule level individual hrp molecules trapped within surface tethered lipid vesicles reaction fluorogenic substrate probed substrate readily penetrates vesicles charged product resorufin gets trapped accumulates inside vesicles surprisingly individual enzyme molecules found stall tens product molecules accumulate bulk enzymology experiments verify enzyme noncompetitively inhibited resorufin initial reaction velocity individual enzyme molecules number product molecules required complete inhibition broadly distributed dynamically disordered two seemingly unrelated parameters however found substantially correlated enzyme molecule long times results suggest way counter disorder enzymes evolved means correlate fluctuations structurally distinct functional sites
lemur tyrosine kinase lmtk member serine threonine tyrosine kinase family thought involved tumor progression prognosis purpose present study determine diagnostic significance therapeutic targets thyroid cancer elisa assay used detect protein expression serum lmtk immunohistochemistry reverse transcription quantitative polymerase chain reaction employed measure expression lmtk flow cytometry used determine cell cycle transwell assay used measure invasion migration cells terminal deoxynucleotidyl transferase dutp nick end labeling tunel assay detect cell apoptosis lmtk level positively associated disease stage pathological type whereas correlation lmtk level gender age tumor size lymph node metastasis serum lmtk level significantly increased thyroid carcinoma patients compared benign thyroid tumor patients healthy volunteers protein mrna expression lmtk markedly higher thyroid cancer patients compared patients benign thyroid tumors notably lmtk knockdown retarded proliferation invasion migration cells addition downregulation lmtk promoted apoptosis cells findings indicated lmtk knockdown retards growth thyroid cancer cells partly inhibiting proliferation invasion migration inducing apoptosis cells may serve useful diagnostic biomarker novel therapeutic target patients thyroid cancer
elucidating origin enzymatic catalysis stands one great challenges contemporary biochemistry biophysics recent emergence computational enzymology enhanced atomistic level description biocatalysis well kinetic thermodynamic properties mechanisms exists diversity computational methods allowing investigation specific enzymatic properties small large density functional theory models allow comparison plethora mechanistic reactive species divergent catalytic pathways molecular docking model different substrate conformations embedded within enzyme active sites determine optimal binding affinities molecular dynamics simulations provide insights dynamics roles active site components well interactions substrate enzymes hybrid quantum mechanical molecular mechanical model reactions active sites considering steric electrostatic contributions provided surrounding environment using previous studies done within group ovoa egtb thrrs luxs msra enzymatic systems review methods used either independently cooperatively get insights enzymatic catalysis
diversity macrophage models currently employed immunology studies may lead opposed results interpretations study aimed analyze suitability macrophage like cells model interaction dermatophyte trichophyton rubrum macrophages cells competent fungal phagocytosis succumbed hyphal growth nevertheless could also secrete beta response dermatophyte opposite direction inflammatory thioglycollate induced peritoneal macrophages succumb fungal growth showed significant beta production proteomic profiling cells uncovered vimentin plastin proteins whose abundance altered fungal interaction study indicates cell line could interesting tool investigation rubrum infection biology
expression novel protein tyrosine phosphatase interacting protein ptpip investigated mrna protein level liver adult wistar rats presence ptpip mrna detected northern blotting immunostaining showed expression ptpip protein distinct non parenchymal cells cells identified kupffer cells stellate cells natural killer cells detection cell specific antigens whereas endothelial cells lining large vessels reacted positive ptpip antibody sinusoidal endothelium showed detectable amount ptpip furthermore ptpip also found expressed cells forming biliary tree additional subcellular analysis non parenchymal cells means electron microscopy showed presence ptpip protein cytoplasm nuclei non parenchymal cells hepatocytes show immuno detectable amount ptpip yet revealed ptpip protein either cytoplasm nucleus
purpose goal describe clinical molecular genetic findings thai patients leber congenital amaurosis lca methods whole exome sequencing wes performed eight unrelated patients genes responsible inherited retinal diseases irds based retnet selected analysis potentially causative variants filtered bioinformatics pipeline validated using sanger sequencing segregation analysis causative genes performed family members available results eleven deleterious variants six nonsense five missense identified seven genes four lca associated genes cep iqcb nmnat rpgrip one gene responsible syndromic lca alms two irds related genes ctnna cypv clinical reassessment supported diagnosis syndromic lca patients harboring potentially pathogenic variants alms interestingly two causative genes ctnna cypv previously reported cause butterfly shaped pigment dystrophy bspd bietti crystalline dystrophy bcd respectively detected two patients two patients developed rapid severe visual loss contrast bspd bcd patients previous studies results study demonstrate causative variants identified ctnna cypv genes also associated lca conclusions first report describing molecular genetics clinical manifestations thai patients lca present study expands spectrum lca associated genes benefit molecular diagnosis identification mutations ctnna cypv genes requires elucidation larger cohorts lca
whole cell patch clamp recordings characterized type currents bovine adrenal zona fasciculata azf cells explored role along role type channels acth angiotensin ang stimulated cortisol secretion two distinct dihydropyridine sensitive type currents identified activated relatively hyperpolarized potentials one activated rapid kinetics conjunction northern blotting pcr determined expressed approximately one half azf cells activated extremely slow voltage dependent kinetics combined properties previously reported type channel type channel antagonist dichloro dimethyl tetrahydro pyran ylmethyl fluoro piperidin ylmethyl benzamide tta inhibited current cells well acth ang stimulated cortisol secretion concentrations affect type currents contrast nifedipine specifically inhibited type currents cortisol secretion less effectively tta diphenylbutylpiperidine antagonists including pimozide penfluridol fluspirilene dihydropyridine niguldipine blocked type currents inhibited acth stimulated cortisol secretion similar potency study shows bovine azf cells express three channels voltage dependent gating kinetics could orchestrate complex mechanisms linking peptide hormone receptors cortisol secretion action potentials sustained depolarization function novel slowly activating type channel particular interest respect regardless well correlated selective inhibition type currents acth ang stimulated cortisol secretion tta nifedipine establish critical importance channels azf cell physiology
background appendiceal cancers rare consist carcinoid mucocele pseudomyxoma peritonei pmp goblet cell carcinoma lymphoma adenocarcinoma histologies current treatment involves surgical resection debulking standard exists adjuvant chemotherapy treatment metastatic disease methods samples identified approximately global tumors analyzed referral molecular profiling clia certified laboratory total samples appendix primary tumor sites identified male female ratio mean age sixty two percent samples adenocarcinomas used analysis rest consisted goblet cell mucinous pseudomyxoma less carcinoids neuroendocrine tests included sequencing sanger next generation sequencing ngs protein expression immunohistochemistry ihc gene amplification fluorescent situ hybridization fish cish results profiling across appendiceal cancer histological subtypes ihc revealed brcp mrp cox mgmt topo pten egfr ercc sparc pdgfr topoa rrm ckit tle ngs revealed mutations following genes kras gnas smad apc atm pikca fbxw braf conclusions appendiceal cancers show considerable heterogeneity high levels drug resistance proteins bcrp mrp highlight difficulty treating tumors suggest individualized approach treatment incidence low could used backbone therapy using inhibitors capecitabine newer agents therapeutic options includetopo inhibitors irinotecan topotecan egfr inhibitors erlotinib cetuximab pdgfr antagonists regorafenib axitinib mgmt temozolomide clinical trials targeting pathways involving kras gnas smad apc atm pikca fbxw braf may also considered overall appendiceal cancers similar patterns molecular profile pancreatic cancers say statistical analysis done differential expression colorectal cancers findings indicate need evaluate patient samples patterns marker expression alteration order better understand molecular biology formulate personalized therapy approach difficult treat cancers supported grant caris life sciences
heightened concentrations inhaled air provoke temporary acidification brain followed compensatory hyperventilation increased arousal anxiety responses likely map basic latent general alarm avoidance system largely shared across mammals sources individual differences showing paroxysmal respiratory emotional responses challenges humans panic separation anxiety disorders lie one extreme distribution sensitivity also developmental trait sensitive interference parental cares sharing sensitivity humans rodents constitute valuable resource model panic separation anxiety laboratory advantages modeling sensitivity rodents include non inferential measurements respiratory readouts proxies human conditions unbiased investigation gene environment interplays flexible availability tissues mechanistic studies data humans animals reported issue neuroscience begin reveal driven behavioral responses stem anatomo physiological systems relatively separated subserving general dispositions anxiety supports notion sensitivity suffocative stimuli ensuing human panic significantly independent trait cognitive anxiety corroborates newer conceptualizations distinguish fear anxiety circuitries ibro published elsevier ltd rights reserved
early pregnancy orchestrated evolutionary maternal adaption toward tolerance semiallogeneic fetus required ensure decidualization early embryo development remodeling immune system involves natural killer cells nks macrophages cells dendritic cells dcs altering microenvironment deciduas particular unique population cells bright phenotype decidua proposed play key role maternal adaptation pregnancy however tendency pregnancy immunology reflect transplantation immunology regarding assumption maternal immune system suppressed tendency misleading discuss immune system formed early deciduas interactions maternal cells fetal growth propose maternal immune response must fully suppressed even necessary local response uterine cells
quality end use oil oilseed crops determined fatty acid composition particular relative proportions erucic oleic acids key selection traits breeders goal research genetically improve nutritional quality brassica napus cultivar oil high erucic acid low oleic acid report use seed specific napin promoter drive knockdown bnfae transgenic southern blotting results confirmed presence transgene pcr analysis showed levels bnfae greatly decreased bnfae lines compared cultivar knockdown bnfae sharply decreased levels erucic acid less largely increased contents oleic acid slightly increased polyunsaturated chain fatty acids compared high erucic acid parents expression bnfae dramatically decreased developing seeds derived reciprocally crossed bnfae lines high erucic acid cultivars addition seeds derived reciprocal crosses bnfae lines high erucic acid cultivars showed significantly increased oleic acid sharply decreased erucic acid less demonstrating rnai construct bnfae effectively interfere target gene seeds taken together results demonstrate bufae reliable target genetic improvement rapeseed seed oil quality promotion elsevier inc rights reserved
three putative terpenoid udp glycosyltransferase ugt genes designated csugt csugt csugt isolated characterized valencia sweet orange citrus sinensis osbeck csugt consisted nucleotides open reading frame encoding amino acids csugt consisted nucleotides encoding amino acids csugt consisted nucleotides encoding amino acids csugt intron whereas csugt csugt none three deduced glycosyltransferase proteins highly conserved plant secondary product glycosyltransferase motif terminus phylogenetic analysis showed csugt csugt classified group glycosyltransferase family csugt classified group southern blotting analysis csugt found two copies sweet orange genome whereas csugt csugt least seven nine copies respectively csugt csugt csugt constitutively expressed leaf flower fruit tissues results facilitate investigation function terpenoid glycosyltransferases citrus biosynthesis terpenoid glycosides vitro
field vascularized composite allotransplantation combining advances reconstructive surgery transplantation immunology offers great promise patients heretofore unsolvable problems last years hand transplantation progressed phases research subject controversial clinical procedure widely accepted expanding field promising endeavor undergoing refined indications although many lessons learned procedures author experience life transformative restoring body image motor sensory functions activities daily living personal autonomy successful hand transplantation copyright american society surgery hand rights reserved
micrornas mirnas represent family small noncoding rnas important regulatory roles diverse biological processes ranging cell differentiation organism development chickens full set mirnas expression patterns mirnas development still poorly understood compared vertebrates study identified novel mirnas potential mirna loci chicken genome combining experimental computational analyses detailed expression patterns mirnas first characterized northern blotting indicated cooperativity mirna expression function embryogenesis organogenesis twenty seven mirna clusters systematically evaluated chicken genome diverse expression patterns closely linked mirnas observed results significantly expand set known mirnas chicken provide basis understanding structural functional evolution mirna genes vertebrates elsevier rights reserved
lactate malate dehydrogenases ldh mdh homologous core metabolic enzymes common nearly living organisms ldhs evolved convergently mdhs least four times achieving altered substrate specificity different mechanism time instance ldh anaerobic trichomonad parasites recently evolved independently ancestral trichomonad mdh gene duplication ldh plays central role trichomonad metabolism catalyzing reduction pyruvate lactate thereby regenerating nad required glycolysis using ancestral reconstruction methods identified biochemical evolutionary mechanisms responsible convergent event last common ancestor enzymes highly specific mdh similar modern trichomonad mdhs contrast ldh lineage evolved promiscuous activity relaxing specificity gradual process neofunctionalization involving one highly detrimental substitution specificity residue many additional mutations small effect different functional consequences ldhs mdhs indicating prominent role epistasis crystal structures modern day ancestral enzymes show evolution substrate specificity paralleled structural changes dimerization helix orientation relatively small specificity residue trichomonad ldhs accommodate range substrate sizes may permit solvent access active site promote substrate promiscuity trichomonad ldhs present multi faceted counterpoint independent evolution ldhs organisms illustrate diverse mechanisms protein function structure stability coevolve
production thyroid stimulating hormone receptor tshr antibodies represents hallmark graves disease pathogenesis thus two decades tshr gene center studies intended elucidate contribution disease pathology advent genome wide association technology allowed establish strong association tshr gene subsequent fine mapping studies narrowed disease susceptibility region sequence intron least five associated snps tight linkage disequilibrium identified current challenge understand functional mechanisms polymorphisms modify physiological processes trigger disease aim review summarize current knowledge role tshr gene pathogenesis gained linkage association studies well discuss emerging mechanisms underlying biological implications tshr variants development
aim study identify gene expression profile biopsies patients cervical intraepithelial neoplasia cin cin cin microinvasive cancer suppression subtractive hybridization southern blotting analyzing cdna clones found upregulated genes downregulated significant change gene expression clones results validated northern blot analysis identification overexpressed downregulated transcripts observed set genes related notch signaling pathway may involved transformation cervical cells development malignancy differentially expressed genes may provide useful information molecular mechanisms involved human cervical carcinoma diagnostic markers
potential impact using human genetic data linked longitudinal electronic medical records drug development extraordinary however practical application data necessitates organizational innovations vanderbilt created resources easily queried database million identified electronic health records linked biovu dna biobank unique samples ensure data used maximally benefit accelerate novo drug discovery drug repurposing efforts created accelerating drug development repurposing incubator multidisciplinary think tank experts various therapeutic areas within basic clinical science well experts legal business operational domains incubator supports diverse pipeline drug indication finding projects leveraging natural experiment human genetics
vitro metabolism permethrin pyrethroid insecticide assessed primary human hepatocytes vitro kinetic experiments performed estimate michaelis menten parameters clearances formation rates permethrin isomers cis trans three metabolites cis trans dichlorovinyl dimethyl cyclopropane carboxylic acid cis trans dcca phenoxybenzoic acid pba non specific binding activity enzymes involved permethrin metabolism cytochromes carboxylesterases quantified trans permethrin cleared rapidly cis permethrin factor min cells respectively factor observed formation rates dcca pba obtained trans cis permethrin isomers rate formation dcca higher one pba metabolism isomers mixture also quantified incubation isomers different ratios showed low inhibitory potential cis trans permethrin estimates clearances formation rates incubation condition differ estimates obtained separate incubation metabolic parameters may integrated physiologically based pharmacokinetic pbpk models predict fate permethrin metabolites human body elsevier ltd rights reserved
protein derived cofactors formed irreversible covalent posttranslational modification amino acid residues example tryptophan tryptophylquinone ttq found enzyme methylamine dehydrogenase madh ttq biosynthesis requires cross linking indole rings two trp residues insertion two oxygen atoms onto adjacent carbons one indole rings diheme enzyme maug catalyzes completion ttq within precursor protein madh premadh substrate contains single hydroxyl group one tryptophans crosslink maug catalyzes six electron oxidation completes ttq assembly generates fully active madh oxidation reactions proceed via high valent bis state one heme present axial heme ligands provided amino acid side chains crystal structure maug complex premadh revealed catalysis involve direct contact hemes maug protein substrate rather accomplished long range electron transfer presumably generates radical intermediates kinetic spectrophotometric site directed mutagenesis studies beginning elucidate maug protein controls reactivity hemes mediates long range electron radical transfer required catalysis article part special issue entitled radical sam enzymes radical enzymology elsevier rights reserved
background drug induced interval prolongation risk factor life threatening ventricular arrhythmias potential side effect many marketed withdrawn medications contribution common genetic variants previously associated baseline interval drug induced prolongation arrhythmias known methods tested hypothesis weighted combination common genetic variants contributing interval baseline identified genome wide association studies predict individual response multiple prolonging drugs genetic analysis subjects performed secondary analysis randomized double blind placebo controlled crossover trial prolonging drugs time matched plasma drug concentration measurements subjects received single doses dofetilide quinidine ranolazine placebo outcome correlation genetic score comprising common genetic variants slope individual subject drug induced increase heart rate corrected qtc versus drug concentration results genetic score correlated drug induced qtc prolongation among white subjects genetic score explained variability response dofetilide confidence interval response quinidine confidence interval response ranolazine confidence interval furthermore genetic score significant predictor drug induced torsade pointes independent sample cases compared controls conclusions demonstrate genetic score comprising common genetic variants explains significant proportion variability drug induced prolongation significant predictor drug induced torsade pointes findings highlight opportunity recent genetic discoveries improve individualized risk benefit assessment pharmacological therapies replication findings larger samples needed precisely estimate variance explained establish individual variants drive effects
lake tanganyika undergone substantial climate driven lake level fluctuations repeatedly changed distribution extent habitat endemic fishes consider whether patterns population genetic structure phenotypic divergence within cichlid fish telmatochromis temporalis affected changing lake levels species large bodied rock living ecomorph small bodied shell living ecomorph found close proximity littoral habitats using mtdna sequences found geographically distant populations within southern lake region diverged approximately years ago suggesting regional genetic structure persisted low stand similar years ago ended rise present levels similar years ago also found signatures large population expansions since rise across study region suggesting populations positively responded new habitat lake levels rose present levels finally found geographically adjacent ecomorphs exhibit significant genetic differentiation signatures gene flow lake level rise results suggest local ecomorph divergence progressed gene flow last major rise lake level similar potentially facilitated new ecological opportunities
understanding roles transposable elements tes evolution genome adaptation long sought goal present new model option harnessed essential gene confers local adaptation heterozygote advantage characterized human alu like family elements genome migratory locust locusta migratoria harbors million copies elements scanning insertions natural locust populations revealed widespread high polymorphism recruited coding region heat shock protein hsp important molecular chaperone diverse signal transduction developmental pathways heterozygotes allele present natural populations allele frequency increases decreased latitudes east coastal china even increasing southern populations regions flanking insertion display clear signatures selective sweep linked mediated hsp mutation consequential embryonic development locust heterozygous embryos develop faster wild type particularly cued long day parental photoperiod heterozygotes also present reduced within population variation embryonic development high developmental synchrony embryos naturally occurring hsp mutation could facilitate multivoltinism developmental synchronization locust southern tropical region results revealed genetic mechanism behind microevolutionary changes balancing selection may acted maintain heterozygote advantage option essential genes
mitogen activated protein kinases mapks expressed postmitotic neurons act important regulators intracellular signaling addition nuclear distribution roles regulating gene expression mapks especially extracellular signal regulated kinase erk subclass reside peripheral dendritic spines synapses including postsynaptic density psd microdomain peripheral pool mapks erks either constitutively active sensitive changing synaptic input active mapks directly interact phosphorylate local substrates alter trafficking subcellular subsynaptic distributions mapks regulate function substrates contribute long lasting synaptic plasticity number physiologically relevant substrates mapks identified synaptic sites central among key synaptic scaffold proteins psd psd cadherin associated proteins delta catenin channels metabotropic glutamate receptors reversible phosphorylation event mapks rapidly efficiently modulate function substrates thus determine strength synaptic transmission review summarizes recent progress cell biology synaptic mapks analyzes roles specific pool mapks regulating local substrates synaptic plasticity
endoribonuclease nendou unique conserved major genetic marker nidoviruses infect vertebrate hosts arterivirus nonstructural protein nsp shown nendou activity play essential roles viral life cycle report three crystal structures porcine reproductive respiratory syndrome virus prrsv equine arteritis virus eav nsp mutants structures arterivirus nsp contain two conserved compact domains terminal domain ntd terminal domain ctd structures prrsv eav endoribonucleases similar conserved arterivirus greatly different severe acute respiratory syndrome sars middle east respiratory syndrome mers coronaviruses cov representing important human pathogens nidovirales order catalytic center nendou activity located ctd positively charged groove next key catalytic residues conserved nidoviruses although ntd nearly identical catalytic region arterivirus nsp family proteins remarkably flexible oligomerization may concentration dependent summary structures provide new insight key multifunctional nendou family proteins lay foundation better understanding molecular mechanism antiviral drug development importance porcine reproductive respiratory syndrome virus prrsv equine arteritis virus two major members arterivirus family prrsv leading swine pathogen causes reproductive failure breeding stock respiratory tract illness young pigs due lack suitable vaccine effective drug treatment quick spread viruses infected animals either die quickly must culled prrsv costs swine industry around million annually united states almost sic billion europe every year find way combat viruses focused essential viral nonstructural protein nsp nsp associated multiple functions rna processing suppression infected host innate immunity system three structures solved study provide new insight molecular mechanisms crucial protein family benefit development new treatments deadly viruses
background bone marrow derived mesenchymal stromal cells mscs multipotent cells high constitutive level autophagy low expression certain conditions mscs may develop tumorigenic properties however transformation induced conditions largely unknown recently identified association hsp main participant cellular stress response tumorigenesis preliminary observations revealed upregulation proteins stressed long term cultured mscs hypothesized implicated stress induced mechanisms cellular transformation mscs hence investigated effects prolonged stress mscs role autophagy survival methods human telomerase reverse transcriptase htert overexpressing immortalized mscs primary bone marrow stromal cells used investigate influence long term serum deprivation hypoxia growth differentiation mscs cell proliferation apoptosis evaluated using flow cytometry differentiation capabilities mscs assessed immunohistochemical staining followed microscopic examination hsp expression analyzed using flow cytometry western blotting reverse transcriptase polymerase chain reaction autophagy explored specific inhibitors using cell morphology examination western blotting results chronic stress factors able change morphology mscs inhibit spontaneous differentiation adipocyte lineage furthermore elevation downregulation accompanied defective autophagy usually associated tumor formation found inhibition autophagy chloroquine promoted cell detachment modulated expression level whereas incorporation recombinant protein cells suppressed autophagy conclusions obtained results provide model chronic stress induced transformation mscs via may therefore highly relevant mesenchymal tumorigenesis
melanocortin receptor mcir gene candidate functional gene controls pigment production melanocytes aim study identify polymorphisms investigate effect mcir gene plumage coloration duck breeds including korean native ducks initially individuals seven duck breeds sequenced obtaining polymorphisms five single nucleotide polymorphisms snps coding region non synonymous mutations corresponding amino acid changes among four snps geno typed using polymerase chain reaction restriction fragment length polymorphism method individuals seven duck breeds fisher exact test conducted identify possible relationships mcir gene polymorphisms plumage color variations four non synonymous snps lysglu ileval alathr argcys associated two deduced genotypes based plumage color phenotypes addition reconstructed mcir gene haplotypes haplotype aagc showed highest frequency nageswari duck breed presents extended black phenotype results indicate identified polymorphisms study used explore associations plumage color variations asian duck breeds
genetic heterogeneity recognized major contributing factor glioblastoma resistance clinical treatment modalities consequently low overall survival rates genetic diversity results variations protein expression intratumorally individual glioblastoma patients regard spectraplakin protein microtubule actin cross linking factor macf examined glioblastoma expression analysis macf various types brain tumor tissue revealed macf predominately present grade iii astroctyomas grade glioblastoma normal brain tissue normal human astrocytes lower grade brain tumors subsequent genetic inhibition experiments showed suppression macf selectively inhibited glioblastoma cell proliferation migration cell lines established patient derived xenograft mouse models immortalized glioblastoma cell lines associated downregulation wnt signaling mediators axinl beta catenin additionally concomitant macf silencing chemotherapeutic agent temozolomide tmz used clinical treatment glioblastomas cooperatively reduced proliferative capacity glioblastoma cells conclusion present study represents first investigation functional role macf tumor cell biology well demonstrates potential unique biomarker targeted synergistically tmz part combinatorial therapeutic approach treatment genetically multifarious glioblastomas
strongly associated tobacco use heavy alcohol consumption high risk human papillomavirus hpv infection head neck squamous cell carcinoma hnscc frequently lethal heterogeneous disease whose pathogenesis multistep multifactorial process involving genetic epigenetic events majority hnscc patients present locoregional advanced stage disease treated combined modality strategies markedly impair quality life elicit unpredictable results large fraction undergo locoregional treatment achieve complete response later develop locoregional recurrences second field tumors biomarkers thus able stratify risk enable clinicians tailor treatment plans personalize post therapeutic surveillance strategies highly desirable date hpv status considered reliable independent predictor treatment response survival patients hnscc arising oropharyngeal site recent studies suggest telomere attrition may early event human carcinogenesis telomerase activation detected malignancies could potential markers cancer risk disease outcome review examines current state knowledge discusses implications linked telomere dysfunction telomerase activation development clinical outcome hnscc
genome sequences nowadays play central role molecular biology bioinformatics sequences shared scientific community sequence databases sequence repositories international nucleotide sequence database collaboration insdc comprising genbank ena ddbj largest world preparing annotated sequence way accepted database challenging many validation criteria apply opinion undesirable situation researchers want submit sequence need either lot experience help partners get job done save valuable time money list number recommendations people want submit annotated genome sequence database well tool developers could help ease process
two genotypes showing differential immunity karnal bunt tilletia indica used investigate role three members cystatin gene family growth stage dependent immunity wheat triticum aestivum three members cystatin gene family cloned sequenced analysis sequenced data showed nucleotide protein sequence identity different genes wheat cystatin silico amino acid sequence analysis revealed presence conserved signature pattern residues also functional domains presumed actively involved imparting cysteine protease inhibition capability semi quantitative quantitative levels members measured means pcr northern blotting western blotting elisa techniques members cystatin gene family expressed resistant susceptible genotypes however expression level significantly contrary family whose expression gradually increased stage according intensity detected band pcr northern blot western blot family seems expressed gene families immunoassay results showed protein abundantly expressed resistant genotype high expression observed stage compared susceptible genotype suggesting low level expression stage responsible infection results present study clearly indicate role cystatin gene family differential stage dependent immunity
pointed gourd trichosanthes dioica roxb perennial dioecious plant family cucurbitaceae recently emerged important cash crop due great medicinal nutritive value breeding programmes pointed gourd several constraints poor germination vegetative means propagation dioecy identification male female seedling stage pre requisite genetic improvement species screening genomic dna inter simple sequence repeat issr primers used early detection male female plants study using pooled dna male female genotypes issr primers putative male specific marker tdmsm produced converted sequence tagged marker tdstsm could successfully amplify product male female southern blotting confirmed single copy locus found male plant tdstsm marker used accurately detect males females individuals pointed gourd unknown sex thus sts primers designed issr fragment tdmsm could used effective reliable molecular marker early sex diagnosis dioeca elsevier rights reserved
objective study evaluate microbiological physical physico chemical quality parameters sous vide preparation pen reared tambaqui colossoma macropomum prepare tambaqui sous vide fillet basil sauce fish fillet sauce ratio sodium lactate used product vacuum packaged pasteurized degrees min refrigerated presence salmonella spp sulfite reducing clostridium listeria monocytogenes detected samples analyzed coliform count degrees coagulase positive staphylococci limit permitted law vigor water retention capacity chloride content analyses revealed tambaqui fillet differed significantly red color decreased sous vide related addition basil sauce chroma hue angle degrees differed significantly fillet samples lighter color whereas sous vide characterized yellow color ratios found fillet sous vide within recommended values important human metabolism fillet sous vide also high calcium zinc magnesium potassium concentrations concluded tambaqui sous vide good source nutrients rich fatty acids minerals essential human health
background age related macular degeneration amd common condition vision loss disease development strongly influenced environmental genetic factors recently loci associated amd genome wide significance far little known genetic overlap amd complex diseases disease relevant traits methods complex diseases traits publicly available genome wide significant association data lead genetic variant per independent locus extracted genetic score calculated disease trait weighted sum risk alleles association amd estimated based amd cases controls using logistic regression results respective disease trait variance genetic scores explained average found significantly associated amd values values notably increased risk amd associated reduced risk cardiovascular diseases increased risk autoimmune diseases higher hdl lower ldl levels serum lower bone mineral density well increased risk skin cancer restricting analysis variants initially used compute genetic scores identified novel amd risk variants values values known involved cardiovascular disorders lipid metabolism autoimmune diseases anthropomorphic traits ocular disorders neurological diseases latter variants represent novel amd associated pleiotropic loci genes novel loci reinforce previous findings strongly implicating complement system amd pathogenesis conclusions demonstrate substantial overlap genetics several complex diseases traits amd provide statistically significant evidence additional loci associated amd highlights possibility far unrelated pathologies may disease pathways common
surface coatings delivering bmp promising approach render biomaterials osteoinductive contrast soluble bmps interact receptors dorsal side cell bmps presented insoluble cue physically bound biomimetic matrix called matrix bound bbmp presented cells ventral side date bmp internalization signaling studies cell biology always performed adding soluble sbmp cells adhered cell culture plates glass slides considered reference condition however whether matrix bound bmp internalized cells relation canonical smad non canonical signaling alp remain open questions study investigated uptake processing bmp myoblasts bmp presented either embedded polyelectrolyte multilayer films matrix bound presentation soluble form using fluorescently labeled bmp showed amount matrix bound bmp internalized dependent level crosslinking polyelectrolyte films cav mediated internalization related smad alp signaling clathrin mediated related alp signaling bmp internalization independent presentation mode sbmp versus bbmp low crosslinked films soft edc striking contrast high crosslinked stiff edc films internalization much lower slower bbmp anticipated internalization sbmp barely depended underlying matrix taken together results indicate bmp internalization tuned underlying matrix activates downstream bmp signaling key effective formation bone tissue statement significance presentation growth factors material surfaces currently presents significant challenges academic research clinics industry able deliver efficiently growth factors biomaterial open new perspectives regenerative medicine however date little known matrix bound growth factors delivered cells especially whether internalized signaling drive key differentiation events initial steps crucial guide subsequent processes leading tissue regeneration work investigate uptake processing cells bmp ligands embedded polyelectrolyte multilayer films comparison soluble bmp show bmp responsive cells internalize matrix bound bmp internalization dependent cross linking level polyelectrolyte films addition show internalization mediated clathrin caveolin dependent pathways inhibiting clathrin dependent endocytosis affects non canonical signaling blocking caveolin dependent endocytosis reduces canonical non canonical bmp signaling signaling pathways found matrix bound bmp similar found soluble bmp results highlight bmp presented biomaterial ventral side cell trigger major endocytic associated signaling pathways leading bone regeneration acta materialia inc published elsevier ltd rights reserved
describe clinical whole genome sequencing wgs study non consanguineous italian family two siblings boy girl manifesting severe epileptic encephalopathy skeletal abnormalities carried novel slca compound heterozygous mutations siblings exhibited infantile spasms associated focal tonic vibratory seizures early infancy eeg recordings showed suppression burst pattern multifocal paroxysmal activity addition quadriplegia acquired microcephaly severe intellectual disability general examination showed distal arthrogryposis predominant hands siblings severe left dorso lumbar convex scoliosis one wgsof siblings parents quartet identified novel compound heterozygous mutations slca children slca encodes major golgi uridine diphosphate acetylglucosamine transporter study add slca gene list epilepsies neurological symptoms skeletal abnormalities might result impaired glycosylation proteins involved normal development function central nervous system skeletal apparatus
nicotinic acetylcholine receptors nachrs highly conserved gene family form pentameric receptors involved fast excitatory synaptic neurotransmission specific roles individual nachr subunits perform drosophila melanogaster insects relatively uncharacterized melanogaster nachr subunits three described roles behavioral pathways alpha alpha sleep alpha escape response subunits associated resistance several classes insecticides particular previous work demonstrated allele alpha subunit associated resistance neonicotinoid insecticides used ends gene targeting create knockout alpha gene facilitate phenotypic analysis controlled genetic background knowledge first report native function nachr subunits known targeted insecticides loss alpha function associated changes courtship sleep longevity insecticide resistance acetylcholine signaling previously linked mating behavior reproduction melanogaster specific nachr subunit directly implicated role alpha number behavioral phenotypes highlights importance understanding biological roles nachrs points fitness cost may associated neonicotinoid resistance
beta hydroxysteroid dehydrogenase type beta hsd mediates glucocorticoid activation currently considered therapeutic target treat metabolic diseases however biomarkers assess activity vivo still lacking recent vitro experiments suggested human beta hsd metabolizes secondary bile acid oxolithocholic acid oxolca chenodeoxycholic acid cdca minor amounts ursodeoxycholic acid udca provide evidence vitro vivo studies major role beta hsd oxidoreduction oxolca compare level metabolism several species hepatic microsomes liver specific beta hsd deficient mice devoid oxolca oxidoreductase activity importantly circulating intrahepatic levels oxolca taurine conjugate significantly elevated mouse models beta hsd deficiency moreover comparative enzymology beta hsd dependent oxidoreduction oxolca revealed guinea pig enzyme devoid oxolca oxidoreductase activity unlike species oxolca glycine conjugate major bile acids guinea pigs jlr conclusion oxidoreduction oxolca conjugated metabolites catalyzed beta hsd lack activity leads accumulation bile acids guinea pigs beta hsd deficient mice thus oxolca conjugates may serve biomarkers impaired beta hsd activity
background micrornas endogenously expressed small non coding rnas modulate gene expression targeting specific mrnas resulting translational repression mrna degradation although mir reported play vital role various malignancies role molecular mechanisms underlying effects mir gastric cancer remain clarified study investigated role mir methods expression mir specific target gene determined human specimens cell lines microrna real time polymerase chain reaction pcr quantitative pcr qrt pcr western blot effects mir depletion ectopic expression proliferation evaluated vitro using cck proliferation assays ethynyl deoxyuridine edu incorporation colony formation assays cell cycle assays vivo effects investigated using mouse tumorigenicity model cell apoptosis evaluated vitro flow cytometric analysis cell viability assays vivo tunel assays luciferase reporter assays employed identify interactions mir specific target gene results series vitro vivo gain loss function assays revealed mir inhibited cell proliferation apoptosis induced luciferase reporter assays western blot analysis revealed wwp direct target mir effects mir mimic rescued wwp overexpression contrast effects mir inhibitor impaired wwp shrna furthermore mir expression levels correlated negatively wwp protein expression tissues cell lines series investigations indicated mir promoted senescence activated tgf beta signaling pathway downregulation wwp conclusion taken together results suggest downregulation mir contributes tumor progression downregulation wwp thus highlighting potential mir therapeutic target human
paper summarized compared characteristics trehalose synthase various bacteria research progress gene engineering results show analysis structure molecular modification research hotspots gene engineering
real time imaging regulated exocytosis secreting organs provide unprecedented temporal spatial detail highlight recent advances time lapse imaging drosophila salivary glands single granule resolution using fluorescently labeled proteins expressed fly possible image dynamics vesicle biogenesis cytoskeletal factors involved secretion imaging time allows one visualize define temporal sequence events including clearance cortical actin fusion pore formation mixing vesicular plasma membranes recruitment components cytoskeleton also discuss genetic tools available fly allow one interrogate essential factors involved secretory vesicle formation cargo secretion ultimate integration vesicular plasma membranes argue combination high resolution real time imaging powerful genetics provides platform investigate role factor regulated secretion
heterogeneity mammalian cells signaling response largely result pre existing cell cell variability unknown whether cell cell variability rises biochemical stochastic fluctuations distinct cellular states utilize calcium response adenosine trisphosphate model investigating structure heterogeneity within population cells analyze whether distinct cellular response states coexist use functional definition cellular state based mechanistic dynamical systems model calcium signaling using bayesian parameter inference obtain high confidence parameter value distributions several hundred cells fitted individually clustering inferred parameter distributions revealed three major distinct cellular states within population existence distinct cellular states raises possibility observed variability response result structured heterogeneity cells inferred parameter distribution predicts experiments confirm variability ipr response explains majority calcium heterogeneity work shows mechanistic models single cell parameter fitting uncover hidden population structure demonstrate need parameter inference single cell level
dna rna sequencing recently become primary way researchers generate biological data analysis assembling algorithms integral part process however require pairwise alignment applied great deal reads although several efficient alignment tools released past years including taking advantage gpus graphics processing units none directly targets high throughput sequencing data result need arose create software could handle data effectively possible dna gpu based dna aligner first highly parallel solution optimized process nucleotide reads dna rna modern sequencing machines results show software reaches gcups giga cell updates per second single gpu result fastest tool class moreover scales well multiple gpus systems including mpi based computational clusters performance counted tcups tera cups
conducted comparative phylogeographic population genetic analyses plestiodon kishinouyei stimpsonii two sympatric skinks endemic islands southern ryukyus explore different factors influenced population structure previous phylogenetic studies using partial mitochondrial dna indicate similar divergence times respective closest relatives suggesting differences population structure driven intrinsic attributes either species rather common set extrinsic factors presumably exposed throughout history study analysis mtdna sequences microsatellite polymorphism demonstrate contrasting patterns phylogeography population structure kishinouyei exhibits lower genetic variability lower genetic differentiation among islands stimpsonii consistent recent population expansion however historical demographic analyses indicate relatively high genetic uniformity kishinouyei attributable recent expansion detected significant isolation distance patterns among kishinouyei populations land bridge islands among stimpsonii populations occurring islands results suggest kishinouyei populations maintained gene flows across islands recently probably via ephemeral quaternary land bridges lower genetic variability kishinouyei may also indicate smaller effective population sizes average stimpsonii interpret differences consequence ecological divergence two species primarily trophic level habitat preference
pulmonary hypertension associated features obesity metabolic syndrome translate induction chronic high fat diet hfd inbred mouse strains conducted genome wide association study gwas identify candidate genes associated susceptibility hfd induced mice inbred wild derived strains fed regular diet hfd weeks beginning weeks age right ventricular left ventricular end systolic pressure esp maximum pressure maxp measured cardiac catheterization tested association maxp esp identified genomic regions enriched nominal associations phenotypes excluded genomic regions also associated maxp esp body weight genes within significant regions scored based shortest path betweenness centrality measure network connectivity human orthologs gene interaction network human related genes wsb eij non shiltj akr mice largest increases maxp high fat feeding network based scoring gwas candidates identified epidermal growth factor receptor egfr highest shortest path betweenness centrality gwas candidates expression studies lung homogenate showed egfr expression increased akr strain developed significant increase maxp high fat feeding compared cbl combined gwas network based approach adds evidence role egfr murine
missense variants dna mismatch repair mmr genes pose problem clinical genetics long unambiguously assigned cause lynch syndrome study variants uncertain clinical significance developed functional assay based direct measurement mmr activity mouse embryonic stem cells expressing mutant protein endogenous alleles applied protocol specific truncation mutant msh removes terminal amino acids found suspected families show stability msh msh heterodimer severely perturbed causing attenuated mmr vitro assays cancer predisposition mice mutation therefore unambiguously considered deleterious causative
steroid resistance syndrome mineralocorticoids glucocorticoids estrogens androgens rare clinical disorder androgen insensitivity syndrome commonly described resistance syndromes characterized elevated steroid hormone levels secondary impaired signal transduction lack negative feedback without specific clinical signs steroid excess cases steroid hormone resistance generally caused steroid receptor mutations several nonsense missense mutations deletions already described steroid receptors except progesterone receptor number reported mutations extremely variable depending steroid receptor ranging estrogen receptor androgen receptor loss function others factors implicated steroid hormone signaling pathway molecular chaperones coactivators might also involved pathogenesis steroid resistance therapy essentially symptomatic currently pharmacological strategy enabling restoration impaired hormone signaling pathway identification steroid resistance syndrome characterization allow better understanding underlying molecular defects opening new avenues development novel alternative options disease management published elsevier masson sas rights reserved
erp member protein disulfide isomerase family chaperone responsible correct folding newly synthesized glycoproteins endoplasmic reticulum assembly major histocompatibility complex class endogenous pathway antigen presentation study reports identification full length erp cdna rainbow trout encodes putative mature protein additional signal sequence trout protein shared identity human homolog interestingly include either terminal endoplasmic reticulum retention signal kedl humans nuclear localization signal highly conserved mammals amino acid sequence alignment revealed conservation four classical domains trout erp two conserved active cxxc redox motifs trout erp protein identified single band around kda southern blotting analysis revealed two copies erp gene trout genome northern blotting showed wide tissue distribution gene expression various tissues highest expression liver egg study showed first time teleost erp transcript upregulated response immune stimuli double stranded rna phytohemagglutinin furthermore upon treatment stress inducer trout erp protein expression levels increased peripheral blood leukocytes rts macrophage like cell line respectively findings suggest possible conserved function trout erp activation immune response elsevier ltd rights reserved
development immuno pcr assay quantitation low amounts anti glycan human antibodies described sensitivity assay determination low affinity anti igm found similar per sample thus two orders magnitude higher compared conventional elisa antigen
aim investigate effect htra proliferation migration apoptosis human retinal pigment epithelium rpe cells light injured model well expression apoptosis related molecules methods human rpe cell line arpe exposed blue light establish light injured model cells transfected htra sirna knockdown htra expression subsequent expression htra determined real time polymerase chain reaction rtpcr western blot respectively changes cell proliferation migration apoptosis assessed cell counting kit cck transwell assay flow cytometry respectively well changes mrna protein levels bax caspase bcl expression results htra highly expressed arpe cells blue light irradiation knockdown htra expression inhibited proliferation migration apoptosis blue light irradiated arpe cells bax caspase expression significantly reduced mrna protein levels sirna treatment bcl expression significantly increased blue light irradiated arpe cells sirna interference conclusion silence htra may inhibit proliferation migration apoptosis arpe cells light injured model moreover htra suppression blue light irradiated arpe cells may ameliorate cell apoptosis regulation bax caspase regulation bcl expression
promising suicide gene therapy system treat gliomas reported thymidine kinase tomato totk combined nucleoside analog pro drug zidovudine azidothymidine azt known penetrate blood brain barrier transduction totk found efficiently increase sensitivity human glioblastoma cells azt nude rats intracranial glioblastoma grafts shown significantly improved survival treated totk azt system show paper strong suicidal effect azt together totk may explained reduced ttp mediated feedback inhibition azt phosphorylation
population genomic analyses essential understanding factors shaping genomic variation lineage specific sequence constraints dearth analyses unicellular eukaryotes prompted assess genomic variation paramecium one well studied ciliate genera paramecium aurelia complex consists similar morphologically indistinguishable species diverged subsequent two rounds whole genome duplications wgds long mya possess extremely streamlined genomes examine patterns nuclear mitochondrial polymorphism sequencing whole genomes worldwide isolates three species belonging aurelia complex tetraurelia biaurelia sexaurelia well two outgroup species share wgds caudatum multimicronucleatum apparent absence global geographic population structure suggests continuous recent dispersal paramecium long distances intergenic regions highly constrained relative coding sequences especially caudatum multimicronucleatum shorter intergenic distances sequence diversity divergence reduced similar upstream downstream genes suggesting strong constraints imposed presence densely packed regulatory modules addition comparison sequence variation non synonymous synonymous sites suggests similar recent selective pressures paralogs within orthologs across deeply diverging species study presents first genome wide population genomic analysis ciliates provides valuable resource future studies evolutionary functional genetics paramecium
santiago grisolia made numerous scientific discoveries contributions great relevance advancement biochemistry molecular biology particularly field enzymology metabolism nitrogen related urea cycle impoverishment pyrimidines article analyses means bibliometrics indicators social network analysis professional career comparing results obtained patterns scientific activity distinguished researchers main findings study carried follows evolution scientific productivity shows initial period growth slow moderate followed fast exponential growth phase high level productivity sustained long period years old wide spectrum collaborators increased progressively time notable citation levels sustained number citations received despite reduction scientific productivity recent years phenomena common professional trajectory relevant scientific figures observed early start scientific publication intervention different areas knowledge frequent publication multidisciplinary journals well journals specialized area knowledge presence majority cases first last position order authorships well high levels collaboration citation great many papers patterns may followed young scientists newcomers achieve scientific excellence
genome sequencing efforts identified many uncharacterized lipase esterase enzymes potential drug targets metabolic diseases obesity diabetes atherosclerosis however sequence information associated structural predictions provide loose framework linking enzyme function disease risk confronted challenge functionally annotating large number uncharacterized lipases goal generating new therapies metabolic diseases daunting challenge involves gathering sequence driven predictions also importantly structural biochemical substrates products physiological data center drug discovery efforts accurately identifying physiologically relevant substrates products individual lipases determining whether newly identified substrates products modulate disease appropriate preclinical animal model systems review describes importance coupling vivo metabolite profiling vitro enzymology powerful means assign lipase function disease specific contexts using animal models particular highlight recent examples using multidisciplinary approach functionally annotate genes within alpha beta hydrolase fold domain abhd family enzymes new discoveries within abhd enzyme family serve powerful examples linking novel lipase function human disease article part special issue entitled tools study lipid functions elsevier rights reserved
congenital adrenal hyperplasia cah due hydroxylase deficiency autosomal recessive disorder common cause ambiguous genitalia newborn genes encoding hydroxylase cypa tenascin tnx tnxb located within hla complex region high gene density termed rccx module module multiple pseudogenes well tandem repeat sequences promote misalignment meiosis leading complex gene rearrangements deletions gene conversion events cypa mutations cause cah tnx deficiency identified cause hypermobility type ehlers danlos syndrome eds report three generation family heterozygous deletion encompassing cypa tnxb initially came medical attention due diagnosis cah proposita southern blotting pcr based analysis rccx module revealed cypa deletion extending tnxb one allele cypa point mutation allele family history notable joint hypermobility additional radiological clinical investigations showed quadricuspid aortic valve single kidney bicornuate uterus bifid uvula proposita mitral valve prolapse mother findings delineate phenotype cah tnx contiguous gene deletion syndrome point intersection connective tissue dysplasias common gene mediated endocrine disorder published wiley liss inc
rapid identification commercially important squid species essential manage squid market protect consumers interests study two sets loop mediated isothermal amplification lamp based assays developed identification jumbo flying squid dosidicus gigas analyzing gigas mitochondrial genes reported genbank mitochondrial cytochrome oxidase subunit coi gene selected designing species specific primers incubated degrees min gigas dna detected real time fluorescence detection realamp visual detection via sybr greena staining visual lamp detection limits per reaction purified gigas dna gigas homogenized cephalopod mixtures methods applied kinds processed squid squid containing products also potential site detection advantages high specificity high sensitivity time saving ease operation
two sisters inherited severe platelet dysfunction associated deficiency displayed single base pair deletion genes delc resulting frame shift premature truncation protein son one displayed mild platelet dysfunction normal sequence hypothesized abnormal platelet phenotype due haploinsufficiency gene analyzed genomic dna family southern blotting real time pcr southern blotting results demonstrated single allele inherited father pcr revealed mother aunt one single intact allele father two alleles single allele contains normal sequence mother aunt delc allele results study support hypothesis illustrate platelet phenotype associated haploinsufficiency
plant micrornas mirnas play important roles modulators gene expression post transcriptional level previous studies shown high throughput sequencing powerful tool identification mirnas believed many mirnas remain discovered found novel conserved mirnas three rice cultivars high throughput sequencing identified subsequent cloning quantitative real time polymerase chain reaction qpcr eight novel mirnas detected significant signals three rice cultivars northern blotting assays quantitative analysis expression profiles showed mirnas perfectly imperfectly negatively correlated target genes suggests mirnas may play important roles rice development first genome wide investigation mirnas different rice cultivars data obtained expand known rice mirna inventory provide information regulatory roles played mirnas rice development elsevier rights reserved
herpesviral haematopoietic necrosis hvhn caused cyprinid herpesvirus cyhv affected commercial production goldfish carassius auratus gibelio carp carassius auratus gibelio high water temperature treatments reported reduce mortality rate infected goldfish elicit immunity survivors define mechanism intervention induces resistance clonal ginbuna carassius auratus langsdorfii closely related species used fish immunology may represent promising model species study investigated susceptibility clonal ginbuna strains cyhv effect high water temperature treatment infected ginbuna goldfish experimental intraperitoneal infection cyhv degrees caused mortality ginbuna strains accompanied histopathological changes typical hvhn infected ginbuna strain goldfish exposed high temperature days shifting degrees permissive degrees non permissive showed reduced mortalities inoculation subsequent virus challenge indicating induction immunity concluded ginbuna showed similar susceptibility disease development cyhv infection compared goldfish suggesting ginbuna useful fish model study cyhv infection immunity
introduction success vaccines available market significantly increased interest vaccine development areas covered main aim paper discuss important vaccines pediatric interest currently developed new pneumococcal vaccines vaccines group streptococcus staphylococcus aureus respiratory syncytial virus analyzed detail expert commentary advances understanding human immunology including human monoclonal antibody identification sequencing technology ability solve atomic level structures vaccine targets provided tools guide rational design future vaccines likely vaccines reach market future thus partially contribute prevention severe diseases significantly affect morbidity mortality children however studies animals several clinical trials children must performed new vaccines become licensed
broad field autoimmunity clinical immunology experimental evidence past years demonstrated several connections immune system nervous system central peripheral leading definition neuroimmunology immune brain axis indeed central nervous system immune privileged site thanks blood brain barrier longer dogma barrier may altered chronic inflammation disruptive changes endothelial cells tight junctions largely mediated adenosine receptors expression diseases encompass neuroimmunology field vary primary nervous diseases multiple sclerosis systemic conditions neuropsychiatric complications systemic lupus erythematosus vasculitidies despite potentially similar clinical manifestations pathogenesis condition different interaction ultra specialized structure nervous system inflammation mediators crucial two examples come antidsdna cross reacting anti methyl aspartate receptor nmdar antibodies neuropsychiatric lupus new family antibody associated neuronal autoimmune diseases including classic paraneoplastic syndromes antibodies directed intracellular antigens autoimmune encephalitis case multiple sclerosis cell paradigm complicated growing evidence cell involvement particularly via aquaporin antibodies influence thl lineages inspired productive aarda sponsored colloquium among experts provide critical review literature pathogenesis different immune mediated diseases neurologic manifestations discuss basic immunology central nervous system interaction immune cells peripheral nervous system elsevier ltd rights reserved
species ranges evolve remains enduring problem ecology evolutionary biology species range limits potentially set inability peripheral populations adapt range edge habitat indeed peripheral populations often assumed reduced genetic diversity population sizes limit evolvability however support assumption mixed possibly genetic effects range expansion depend two factors extent habitat expansion occurs novel sources gene flow used spadefoot toads spea bombifrons contrast population genetic effects expansion novel versus non novel habitat evaluated gene flow conspecifics heterospecifics via hybridization resident species found range expansion novel habitat relative non novel habitat resulted higher genetic differentiation lower conspecific gene flow bottlenecks moreover found hybridizing resident species introduced genetic diversity novel habitat results suggest evolution species ranges depend extent differences habitat ancestral newly occupied ranges furthermore results highlight potential hybridization resident species enhance genetic diversity expansions novel habitat
purpose review endometrial cancer incidence increasing north america major cause morbidity mortality women review recent literature published treatment endometrial cancer highlight areas active interest recent findings movement toward minimal invasive surgery diagnosis lymph node staging remains controversial continues investigated progress made establish consensus endometrial cancer risk classification promote consistency future trial design molecular characterization endometrial cancer integration clinicopathological profiling develop predictive biomarkers treatment selection active areas research optimal adjuvant treatment strategy high risk endometrial cancer remains defined recognition treatment related toxicity despite encouraging results drug development treatment advanced recurrent endometrial cancer targeted therapies beyond hormonal therapy approved urgent need scientifically validated therapy predictive biomarkers summary understanding endometrial cancer evolved improvements molecular biology allowing improved definition target specific therapies precise role sequence conventional targeted therapies including immunotherapy require careful attention design clinical trials translational emphasis allow discovery validation implementation predictive biomarkers clinical care
transcription factor encoded gene knotted nuclear homeodomain protein regulating meristematic cells shoot apical meristem demonstrated knotted expression specifies stem cell fate adventitious shoot induction herbaceous plants gene may thus potentially identify initiation meristem development adventitious shoot induction difficult regenerate plants prunoideae isolated almond prunus dulcis mill type gene using degenerate primers targeting conserved regions knotted gene ends isolated sequence obtained rapid amplification cdna ends polymerase chain reaction race pcr gene named dulcis knotted like pdkn pdkn transcripts detected reverse transcription pcr mainly shoot apical axillary meristems pcr quantitative pcr pdkn expression almond leaf explants found anticipate organization adventitious shoot meristems apricot rna isolated induced leaf explants cross hybridized almond probe pdkn northern blotting suggest almond pdkn may useful marker study adventitious regeneration system revealing potential organogenic conditions almond also prunoideae
treatment acute myeloid leukemia aml aggressive heterogeneous hematological malignancy remains challenge despite advances understanding complex genetics biology aml pathophysiology findings translated clinic limited success poor outcomes persist majority patients thus novel treatment strategies clearly needed achieving deeper prolonged remissions avoiding development resistance due profound role cancer stem cell biology differentiation hedgehog glioma associated oncogene homolog gli signaling pathway may attractive novel therapeutic target aml review aim provide critical concise overview currently known potential challenges gli targeting describe biological role gli pathway aml pathophysiology specifically focus ways targeting non canonical gli signaling aml particularly combination standard treatment regimens may overcome hurdles observed approved pathway inhibitors solid tumors
objective objective assess prevalence plasmid mediated quinolone resistance pmqr producing isolates collection quinolone resistant enterobacteriaceae community origin isolated bejaia algeria methods total nalidixic acid resistant enterobacteriaceae community isolates collected bejaia northern algeria screened pmqr genes using polymerase chain reaction pcr pmqr positive strains antimicrobial susceptibility testing performed broth microdilution disk diffusion mutations quinolone resistance determining regions target genes gyra parc detected pcr based method sequencing southern blotting conjugation transformation assays molecular typing pulsed field gel electrophoresis pfge multilocus sequence typing also performed results prevalence pmqr producing enterobacteriaceae isolates isolates produced aac qnr positive qnrb like qnrs like qnrd like including association aac gene three cases pmqr gene transfer conjugation successful isolates tested pfge revealed pmqr positive escherichia coli isolates unrelated except two groups comprising two four isolates respectively including virulent multidrug resistant clone coli clonally related conclusion findings indicate pmqr determinants prevalent enterobacteriaceae isolates community studied describe first report qnrd gene algeria
immunoglobulins chondroichthyes extensively studied sharks contrast skates investigations remain scarce fragmentary despite high occurrence skates major oceans world focus rajidae igu abundant heavy chain isotype chosen antarctic species bathyraja eatonii bathyraja albomaculata bathyraja brachyurops amblyraja georgiana live high latitudes southern ocean low temperatures prepared mrna spleen individuals species performed pcr experiments using two oligonucleotides designed alignment various elasmobranch heavy chain sequences available genbank pcr products long cloned sequenced nucleotide sequence identities calculated constant region domains ranged species within species distance tree including also raja erinacea sequences two major branches obtained one containing arhynchobatinae sequences one rajinae sequences four presumptive gene segments identified region recombination two different segments often found sequence moreover genomic fragments different lengths carrying gene locus encoding chain revealed southern blotting analysis eatonii amino acid sequences analyzed positional diversity shannon entropy analysis showing conserved domain variable one eatonii cdr region length varied amino acid residues mean length greater leucoraja eglanteria sequences alignment representative sequences antarctic species erinacea showed cysteine residues involved intradomain disulfide bridges present antarctic species elsevier rights reserved
quantitative real time reverse transcription pcr qpcr widely used detection quantification gene expression levels high accuracy sensitivity reproducibility well large dynamic range however reliability accuracy qpcr depends accurate transcript normalization using stably expressed reference genes amorphophallus perennial plant high content konjac glucomannan kgm corm crop used food source traditional medicine thousands years without adequate knowledge gene expression profiles report validated reference genes amorphophallus study nine genes usually used reference genes crops selected candidate reference genes putative sequences genes amorphophallus cloned use degenerate prirners expression stability gene assessed different tissues two abiotic stresses heat waterlogging albus konjac three distinct algorithms used evaluate expression stability candidate reference genes results demonstrated eifa ubq best reference genes heat stress amorphophallus furthermore eifa tub best reference genes waterlogged conditions comparing different tissues samples determined eifa cyp stable sets addition suitability reference genes confirmed validating expression gene encoding small heat shock protein shsp related heat stress amorphophallus sum eifa two best reference genes normalizing mrna levels different tissues various stress treatments suggest using one genes combination reference genes associated different biological processes normalize gene expression results provide researchers appropriate reference genes gene expression quantification using qpcr amorphophallus
background mosquitoes culex pipiens complex competent vectors west nile virus wnv rift valley fever virus rvfv widely targeted insecticide treatments intensive application chemical insecticides led development resistance many insects including culex pipiens mosquitoes absence data resistance mechanisms morocco allow assess levels lambda cyhalothrin resistance frequency mutated gene kdr different forms pipiens complex three regions morocco methods mosquito adults reared immature stages collected three different regions morocco tangier casablanca marrakech standard insecticide susceptibility tests conducted adults emerged collected larvae specimens identified belonging culex pipiens complex using multiplex pcr assay diagnostic primers designed flanking region microsatellite identified mosquitoes tested presence kdr mutation using pcr assay results results showed tested population resistance lambda cyhalothrin molecular identification survivors shows belonged pipiens pipiens pipiens molestus form hand specimens screened kdr mutation mutation detected different forms pipiens different sites frequency mutation similar pipiens pipiens form hybrid form lower pipiens molestus form presence kdr allele significantly associated resistance lambda cyhalothrin pipiens pipiens hybrid form conclusion resistance lambda cyhalothrin pipiens populations appears largely due kdr mutation knowledge frequencies kdr mutation examined first time natural populations culex pipiens complex morocco findings provide important information propose adapted vector control measures towards mosquito species potential vector arboviruses
breast cancer common female cancer affecting approximately one eight women lifetime north america europe receptor activator ligand rankl receptor rank natural antagonist osteoprotegerin opg essential regulators bone resorption initially shown rankl rank essential hormone driven mammary epithelial proliferation pregnancy rankl rank implicated mammary stem cell biology using genetic mouse models others identified rankl rank system key regulator sex hormone brca mutation oncogene driven breast cancer proposed rankl rank might involved initiation breast tumors report postmenopausal women without known genetic predisposition high rankl progesterone serum levels stratify subpopulation women high risk developing breast cancer months diagnosis fold risk women established breast cancer demonstrate rankl opg ratios change dependent presence circulating tumor cells ctcs finally show prospective human breast cancer cohort alterations rankl opg ratios significantly associated breast cancer manifestation data indicate rankl rank opg system deregulated post menopausal women high risk breast cancer women circulating tumor cells thus serum levels rankl opg potentially indicative predisposition progression breast cancer humans advancement findings towards clinical application awaits prior validation independent patient cohorts
response overfeeding geese develop fatty liver understand fattening mechanism mrna differential display reverse transcription pcr used study gene expression differences french landes grey geese xupu white geese conditions overfeeding normal feeding one gene found regulated fatty liver breeds cdna identity chicken selenbp sequence analysis revealed open reading frame encodes protein amino acids contains putative conserved domain kda selenium binding protein high homology homologues chicken rat mouse human monkey dog cattle function protein briefly reviewed based published information tissue expression analysis expression geese selenbp mrna found higher liver kidney tested tissues results showed overfeeding could increase mrna expression level geese selenbp
historically study proteins relied heavily characterizing activity single purified protein isolated cellular components classic approach allowed scientists unambiguously define intrinsic kinetic chemical properties protein ultimate hope extrapolate information toward understanding enzyme receptor behaves within native cellular context types detailed vitro analyses necessary reduce innate complexities measuring singular activity biochemical properties specific enzyme without interference enzymes potential competing substrates however recent developments fields encompassing cell biology molecular imaging chemical biology provide unique chemical tools instrumentation study protein structure function regulation native cellular environment advancements provide foundation new field coined physiological enzymology quantifies function regulation enzymes proteins cellular level special edition explore area physiological enzymology protein function series review articles focus tools techniques used measure cellular activity proteins inside living cells article part special issue entitled physiological enzymology protein functions elsevier rights reserved
background celiac disease immune mediated disorder characterized accumulation immune cells duodenal mucosa consequence adaptive innate immune responses undigested gliadin peptides mast cells mcs innate immune cells major source costimulatory signals inflammatory mediators intestinal mucosa although mcs previously associated functional studies never performed objective aimed evaluating role mcs pathogenesis methods intestinal biopsy specimens patients scored according marsh classification characterized leukocyte infiltration distribution moreover reactivity gliadin peptides characterized using vitro assays results infiltrating mcs associated severity mucosal damage numbers increased patients higher marsh scores mcs found directly respond nonimmunodominant gliadin fragments releasing proinflammatory mediators immunohistochemical characterization infiltrating mcs effects gliadin peptides intestinal mcs indicated increase proinflammatory function advanced stages disease also associated increased neutrophil accumulation prevalence macrophages severity tissue damage conclusion provide description progressive stages mcs hallmark inflammatory process thus view revised contribution mcs onset progression reconsidered developing new therapeutic approaches
background viruses atypical pathogens cause significant respiratory illness immunocompromised patients multiplex polymerase chain reaction mpcr improved diagnostic yield pathogens easier identify infections also present study done evaluate performance mpcr bronchoalveolar lavage bal samples immunocompromised patients methods total bal specimens collected months period immunocompromised patients respiratory illness analyzed mpcr aerobic culture patients divided four according pathogens category viral category nonviral bacteria atypical category mixed viral nonviral pathogen category unknown etiology results mpcr identified causative pathogen patients culture could identify patients frequent etiological agent klebsiella pneumoniae followed cytomegalovirus pneumocystis jirovecii numbers patients category category category category category mortality significantly higher patients category mixed infections conclusion mpcr highly sensitive rapid tool considered routine diagnostic algorithm respiratory illness immunocompromised patients
ability transform chloroplasts multiple species important improving agricultural traits chloroplast transformation alfalfa medicago sativa useful forage plant high market value achieved using vector carrying aada gfp genes introduced chloroplasts alfalfa via particle bombardment using leaves calli explants resistant somatic embryos generated developed plantlets explants transformation efficiency callus explants leaf explants pcr southern blotting analyses revealed foreign genes integrated transformed chloroplast genome occurrence gfp confirmed fluorescence microscopy expression foreign genes alfalfa chloroplasts therefore possible provides novel means genetic improvement agronomically important traits production value added proteins
viral infections leading causes upper lower airway acute illness age groups healthy persons also implicated acute exacerbations chronic respiratory disorders like asthma copd human rhinovirus respiratory syncytial virus influenza virus coronavirus considered important respiratory pathogens relatively little attention paid role parainfluenza viruses hpivs human parainfluenza viruses single stranded rna viruses belonging paramyxovirus family may evoke lower respiratory infections infants children immunocompromised individuals among non immune compromised adults hpiv infection typically causes mild disease manifested upper respiratory tract symptoms infrequently associated severe croup pneumonia moreover hpiv infection may associated viral exacerbations chronic airway diseases asthma copd chronic rhinosinusitis review summarized basic epidemiology immunology hpivs addressed recent data implicating role parainfluenza viruses exacerbation chronic airway disorders
extensive database toxicity modes action ethylene glycol developed past several decades although renal toxicity long recognized potential outcome recent years developmental toxicity effect observed rats mice become subject extensive research regulatory reviews establish guidelines human exposures developmental toxicity attributed intermediate metabolite glycolic acid become major metabolite administered rats mice high doses dose rates therefore physiologically based pharmacokinetic pbpk model developed integrate extensive mode action pharmacokinetic data use developmental risk assessments resulting pbpk model includes inhalation oral dermal intravenous subcutaneous routes administration metabolism described liver elimination via kidneys metabolic rate constants partition coefficients estimated vitro studies biochemical constants optimized appropriate vivo pharmacokinetic studies several controlled rat human metabolism studies used validate resulting pbpk model internal dose surrogates compared rats humans broad range exposures concluded humans unlikely achieve blood levels associated developmental toxicity rats following occupational environmental exposures
since discovery formation dna based extracellular traps ets neutrophils innate immune defense mechanism hundreds articles describe involvement ets physiological pathological human animal conditions reviewed ref previous frontiers research topic netosis http www frontiersin org books netosis intersection cell biology microbiology immunology interestingly reports reveal ets formed immune cells ancient organisms far back common ancestor vertebrates invertebrates recently reported sentinel cells multicellular slug social amoeba dictyostelium discoideum also produce ets trap kill slug invading bacteria see box figure ref strong evidence dna based cell intrinsic defense mechanisms emerged much earlier thought billion years ago amazingly using extrusion dna weapon capture kill uningestable microbes rationale emergence multicellularity primitive innate immune system developed form dedicated set specialized phagocytic cells professionalization immunity allowed evolution sophisticated defense mechanisms including sacrifice small set cells mechanism related netosis altruistic behavior likely emerged steps starting release dispensable mitochondrial dna discoideum sentinel cells grounded realization one anticipate near future many examples invention fine tuning ets early metazoan ancestors identified consequently expected complete picture evolution ets impact views involvement pathologies linked ets human animals
chromatin immunoprecipitation chip indispensable tool fields epigenetics gene regulation isolates specific protein dna interactions chip coupled high throughput sequencing chip seq commonly used determine genomic location proteins interact chromatin however chip seq hampered relatively low mapping resolution several hundred base pairs high background signal chip exo method refined version chip seq substantially improves upon resolution noise key distinction chip exo methodology incorporation lambda exonuclease digestion library preparation workflow effectively footprint left right dna borders protein dna crosslink site chip exo libraries subjected high throughput sequencing resulting data leveraged provide unique ultra high resolution insights functional organization genome describe chip exo method optimized streamlined mammalian systems next generation sequencing synthesis platform
aim enhance survival generation definitive endoderm cells human embryonic stem cells simple reproducible system main methods definitive endoderm differentiation human embryonic stem cells hescs induced chemical defined condition withdrawn insulin supplement serum albumin dissected influence alternative growth factors wnta bmp bfgf activin driven differentiation detection associated genes expression cell viability expression associated sox foxa genes analyzed real time reverse transcription polymerase chain reaction pcr western blot assays quantitative evaluation efficiency performed flow cytometry analysis cxcr expressed cell population cell viability differentiation analyzed annexin double staining test key findings supplementation wnta bmp bfgf promoted generation dose time dependent manner cell apoptosis elicited activin significantly ameliorated cocktail wnta bmp bfgf allowed sustained cell viability without insulin containing supplements thereby indirectly improving efficiency generation therefore cocktail containing optimal efficient generation presence activin insulin albumin free condition significance optimal condition facilitates balance productivity viability maintenance could valuable mass production minimal variation elsevier inc rights reserved
background anaphylaxis potentially life threatening systemic allergic reaction studies suggest incidence anaphylaxis increasing however recent trends emergency department visits anaphylaxis united states studied objective examine trends incidence rates anaphylaxis related visits methods retrospectively analyzed data national administrative claims database including commercially insured medicare advantage patients identified visits anaphylaxis calculated rates number anaphylaxis related visits per enrollees rates compared time age trigger results year time period visits anaphylaxis identified median interquartile range age years years female cases due unspecified triggers associated food medication related due insect venom overall rate anaphylaxis per enrollees increased rates visits anaphylaxis increased age groups greatest increase children aged years increase rate food related anaphylaxis increased rate medication related anaphylaxis increased conclusions visits anaphylaxis increased increases visits greatest among children american academy allergy asthma immunology
dendritic cells dcs display unique ability cross presenting antigens cells promoting differentiation cytotoxict lymphocytes ctls play pivotal role anti tumor immunity emerging evidence points dopamine receptor key regulator immunity accordingly studied regulates dcs function anti tumor immunity results show deficiency dcs enhanced expansion ctls vivo induced stronger anti tumor immunity culture experiments indicated inhibition dcs potentiated antigen cross presentation ctls activation findings suggest dcs constitutes new therapeutic target strengthen anti tumor immunity elsevier rights reserved
rabbit third commonly used animal model different fields scientific research reproductive biology fertility embryo transfer studies immunology animal species often used antibodies production minority scientific records immunological status reproductive organs aim study find histological immunological changes rabbit female reproductive tract different reproductive stages study carried female rabbits divided three groups according following stages reproductive cycle estrous ovulation pregnancy histological immunohistochemical stains cells performed tissue samples cornu uteri cervix lymphocytes predominant anatomical parts uterus stages cycle highest number cells recorded estrous lowest recorded pregnancy cervix expressed immunological activity cornu uteri distribution number immune positive cells rabbit female reproductive tract depend hormonal status
purpose reviewto provide examples mitochondria specific metabolic events influence tumor cell biology metabolism related mitochondrial biomarkers therapeutic targets cancer cells recent findingscancer cell mitochondria rewired optimally serve cancer cell various conditions cellular stress nonexhaustive list mitochondrial alterations support cancer cell proliferation survival progression includes upregulation oxidative metabolism use alternative substrates oncometabolites increased superoxide production mutated mitochondrial dna altered mitochondrial morphology dynamics potential therapeutic targets include fatty acid oxidation voltage dependent anion channel pyruvate dehydrogenase complex complex summarysome phenotypical traits example chemoresistance metastasis likely regulated fine tuned balance several metabolic processes events upregulated parallel also dependent microenvironmental cues many metabolism related mitochondrial biomarkers show prognostic value biological interpretation data may confounded overall metabolic status context understanding metabolic regulation stemness important targeting cancer stem cells therapeutic targeting cancer cell mitochondria remains experimental promising predictive markers needed metabolism based treatments personalized medicine
objective determine presence human papillomavirus hpv head neck squamous cell carcinoma specifically larynx without bias sublocations describe different serotypes hpv impact overall disease free survival year follow study design retrospective case series chart review ear nose throat oncologic database setting academic tertiary care hospital subjects total samples larynx squamous cell carcinoma included glottis treated surgery methods dna extraction carried polymerase chain reaction subsequent visualization performed low density arrays results compared histologic clinicopathologic survival parameters year follow results hpv dna detected samples eleven genotypes detected never described larynx hpv hpv increasing trend hpv observed time hpv presence correlate better survival follow smoking proven independent factor relation presence hpv conclusion hpv may represent notable factor development subset laryngeal squamous cell carcinoma without significant influence overall disease free survival studies including oncogene transcription proteins would necessary draw relevant conclusions relevance hpv infection larynx
fundamental question cell biology cell organelle sizes regulated long recognized size nucleus generally scales size cell notably embryogenesis dramatic reductions cell nuclear sizes occur mechanisms nuclear size regulation largely unknown may relevant cancer altered nuclear size key diagnostic prognostic parameter vivo approaches identifying nuclear size regulators complicated essential complex nature nuclear function vitro approach described study nuclear size control takes advantage normal reductions nuclear size occur xenopus laevis development first nuclei assembled laevis egg extract nuclei isolated resuspended cytoplasm late stage embryos min incubation period nuclear surface area decreases providing useful assay identify cytoplasmic components present late stage embryos contribute developmental nuclear size scaling major advantage approach relative facility egg embryo extracts biochemically manipulated allowing identification novel proteins activities regulate nuclear size vitro approach validation results vivo system important microinjection laevis embryos particularly appropriate studies
dna cloning essential tool regarding dna recombinant technology allows replication foreign dna fragments within cell pelmo constructed house cloning vector rapid low cost pcr product propagation optimally designed vector containing ccdb killer gene pdonr plasmid cloned puc vector multiple cloning site thermo scientific ccdb killer gene cleavage site ccc ggg smai restriction enzyme used vector linearisation cloning blunt ended products pelmo transformation efficiency evaluated different sized inserts cloning efficiency compared pgem easy commercial vector highest pelmo transformation efficiency observed similar dna fragments pelmo vector higher cloning efficiency insert sizes tested house commercial vector cloned insert reads sequencing similar thus highlighting sequencing primers designed localised appropriately pelmo thus proposed practical alternative house cloning pcr products molecular biology laboratories
two valid targets antibiotic development hydroxymethyl dihydropterin pyrophosphokinase hppk dihydropteroate synthase dhps catalyze consecutive reactions folate biosynthesis francisella tularensis two activities contained single protein fthppk dhps although pemble plos one determined structure fthppk dhps unable measure kinetic parameters enzyme study elucidated binding inhibitory activities two hppk inhibitors fthppk dhps determined structure fthppk dhps complex measured kinetic parameters dual enzymatic activities fthppk dhps biochemical analyses showed significant isozyme selectivity fthppk dhps unique catalytic efficiency dhps activity escherichia coli dhps sequence structural analyses suggest excellent lead developing therapeutic agents tularemia low dhps activity due least part lack key residue interacts substrate aminobenzoic acid paba blast search genomes ten tularensis strains indicated bacterium contains single fthppk dhps marginal dhps activity single copy existence fthppk dhps tularensis make bacterium vulnerable dhps inhibitors current sulfa drugs ineffective tularemia new inhibitors targeting unique paba binding pocket may effective less subject resistance mutations introducing resistance may make marginal dhps activity unable support growth tularensis
study conducted validate capability dna microarray technology olipro foodpath gene chip detecting food borne pathogens nine types food borne pathogen dnas used namely bacillus cereus escherichia coli staphylococcus aureus vibrio cholerae vibrio parahaemolyticus listeria monocytogenes salmonella spp shigella spp campylobacter spp total combinations dna templates food borne pathogens used polymerase chain reaction pcr southern blotting hybridization methods used gene chip validate capability results hibridization gene chip compared results gel electrophoresis five screenings required complete combinations dna templates food borne pathogen screening one gene chip used negative control whereby dna templates food borne pathogen inoculated results showed combinations food borne pathogen dna templates detected negative control chip show presence dna study showed olipro foodpath gene chip gave better results gel electrophoresis
unaccustomed exercise known produce strength loss soreness myocellular disruption repeated application exercise stimuli appearance indexes muscle damage attenuated called repeated bout effect direct connection established repeated bout effect exercise induced increases protein turnover appears degree tolerance developed toward exercise present study sought investigate markers protein degradation determining expression components related ubiquitin proteasome system ups repeated exercise bouts healthy men carried min bench stepping performing eccentric work one concentric work leg performing duplicate exercise bout later nonexercising control group included rna extracted muscle biopsies representing time points preexercise days selected mrna species quantified using northern blotting exercise model proved sufficient produce repeated bout effect terms strength soreness forkhead box transcription factor foxo muscle ring finger protein murf strong upregulations seen exclusively concentric loading atrogin displayed strong downregulation exclusively response eccentric exercise murf transcription first bout produced downregulation persisted second bout conclusion ups modulated differentially response varying loading modalities different time frames way extent reflects changes protein metabolism known take place exercise
study present line measurement enzyme activity inhibition glucose phosphate dehydrogenase gpdh enzyme using capillary electrophoresis based immobilized enzyme micro reactor based imer imer prepared using two step protocol based electrostatic assembly micro reactor exhibited good stability reproducibility line assay gpdh enzyme activity well inhibition gpdh enzyme six inhibitors including three metals vancomycin urea kmno investigated using line assay based imers enzyme activity inhibition kinetic constants measured using imers found consistent using traditional line enzyme assays kinetic mechanism inhibitor also determined present study demonstrates feasibility using based imers rapid efficient line assay gpdh important enzyme pentosephosphate pathway human metabolism elsevier rights reserved
purpose aim paper explain difficulties associated applying science nutrition formulating advice protect public health using example dietary fibre design methodology approach based review relevant literature published first section traces history attempts constructing useful definitions dietary fibre problems measurement fibre content foods measurement fibre intake individuals testing correlations disease outlined findings equivocal nature current definitions dietary fibre lack accuracy validity reliability methods determination major limitations developing understanding role protecting human health perhaps dietary constituent elucidation science describing role dietary fibre human nutrition confounded known unidentified variables practical implications paper reflects increasing scientific awareness developments nutrition subject limitations methods analysis research design explains processes scientific investigation often slow reveal important relationships dietary factors health presents difficulties authorities charged promoting health protective eating behaviours originality value although possible unequivocally quantify dietary fibre effects human metabolism research provides strong support choosing wide range fresh minimally intact plant food sources protect health recommended fbdg promoted many countries around world health protective effects may achieved moderation information disseminated dietary fibre particularly via marketing manufactured foods supplemented fibre isolates
oxidative bond cleavage aminophenols non heme dioxygenases critical step human metabolism kynurenine pathway microbial degradation nitroaromatic pollutants catalytic cycle aminophenoldioxygenases apdos proposed involve formation iminobenzosemiquinone complex although presence substrate radical called question studies related ring cleaving dioxygenases recently reported first synthesis iron complex coordinated iminobenzosemiquinone isq ligand namely tbu isq hydro tris diphenylpyrazol borate tbu isq radical anion derived amino tert butylphenol current manuscript density functional theory dft calculations wide variety spectroscopic methods electronic absorption mossbauer magnetic circular dichroism resonance raman employed obtain detailed electronic structure descriptions one electron oxidized derivative addition describe synthesis characterization parallel series complexes featuring neutral supporting ligand tris diphenyl methylimidazol phosphine tip isomer shifts obtained mossbauer experiments confirm tip based analogue contain centers presence isq radical verified analysis absorption spectra light time dependent dft calculations collective spectroscopic data indicate one electron oxidation isq complexes yields complexes electronic configurations iii isq ibq limits ibq iminobenzoquinone highlighting ability amidophenolates access multiple oxidation states implications results mechanism apdos ring cleaving dioxygenases discussed
background ovarian tissue cryopreservation otc option available preserve fertility prepubertal females neuroblastoma childhood solid tumor spread ovaries risk reintroducingmalignant cells ovarian graft procedure set determine whether analysis tyrosine hydroxylase phoxb paired like homeobox dcx doublecortin transcripts using quantitative reverse transcriptase polymerase chain reaction qpcr could used detect contamination ovarian tissue analyses performed benign ovarian tissue healthy women november september university hospital clermont ferrand pericystic benign ovarian tissues collected contaminated increasing numbers human cells cell lines imr detection using qpcr results dcx transcripts detected uncontaminated ovarian tissue donors hampering detection small numbers tumor cells contrast phoxb detected uncontaminated ovarian fragment phoxb levels significantly increased cells study first evaluate minimal residual disease detection using mrnas human ovarian tissue phoxb reliable marker cells contaminating ovarian tissue conclusions results encouraging offer hope near future grafting ovarian tissue women survive cancer whose fertility jeopardized treatment could benefit fromotc without oncological risk
prokaryotes form ubiquitin like isopeptide bonds lysine residues proteins least two distinct pathways reversible regulated mycobacteria terminal gln pup prokaryotic ubiquitin like protein deamidated isopeptide linked proteins mechanism distinct ubiquitylation enzymology yet analogous ubiquitylation targeting proteins destruction proteasomes fold proteins archaea samps small archaeal modifier proteins thermus ttub trna two thiouridine differ amino acid sequence yet share common beta grasp fold also form isopeptide bonds mechanism appears streamlined compared ubiquitylation samps ttub found members small group fold proteins function protein modification also sulfur transfer pathways associated trna thiolation molybdopterin biosynthesis multifunctional fold proteins thought ancient like protein modifiers
chemical properties vitamers uniquely suited wide use cofactors essential reactions decarboxylations transaminations review addresses current efforts explore vitamin dependent enzymatic reactions drug targets several current targets described found amongst enzymes focus set diseases caused protozoan parasites comparison across range organisms allows insight distribution potential targets many may interest development broad range anti protozoan drugs article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
cells release small extracellular vesicles evs surrounding media upon virus infection cells also release virions size evs virions evs carry proteins cells generated antigenically heterogeneous spite diversity viruses evs characterized predominantly bulk analysis describe original nanotechnology based high throughput method allows characterization antigens individual small particles using regular flow cytometers viruses extracellular vesicles immunocaptured magnetic nanoparticles mnps coupled antibodies recognizing one surface antigens captured virions vesicles incubated fluorescent antibodies surface antigens resultant complexes separated magnetic columns unbound antibodies analyzed conventional flow cytometers triggered fluorescence method wide applications used characterize antigenic composition viral non viral small particles generated cells vivo vitro provide examples usage method evaluate distribution host cell markers individual hiv particles study maturation individual dengue virions denv investigate extracellular vesicles released bloodstream
keratins fibrous proteins hair keratins constitute hard structures hair nails cytokeratins used markers breast carcinoma however expression function full size hair keratin genes previously demonstrated breast cancer investigated expression hair keratin krt function human breast cancer normal mammary epithelial cells western blotting showed full size kda krt expression human breast cancer cell lines mcf skbr mda normal human mammary epithelial cells hmec non neoplastic cells mcfa reverse transcription polymerase chain reaction revealed full size krt including region expressed breast cells immunohistochemical immunofluorescence analyses showed krt located cytoplasm investigate function krt knocked krt sirna mcfa cells microarray analysis revealed expression genes related invasion matrix metallopeptidase mmp decreased krt knockdown mda cells zymography revealed decrease mmp activity scratch invasion assays revealed krt knockdown decreased cell migration invasion abilities first study showing full size krt expressed normal breast epithelial cells breast cancer cells moreover results indicate krt contributes migration invasion breast cancer cells
epigallocatechin gallate egcg derived green tea studied extensively diverse physiological pharmacological properties study evaluates protective effect egcg angiotensin ang induced endoglin expression vitro vivo cardiac fibroblasts cfs thoracic aorta adult wistar rats cultured induced ang western blotting northern blotting real time pcr promoter activity assay performed ang increased endoglin expression significantly compared control cells specific extracellular signal regulated kinase inhibitor jnk inhibitor egcg jun terminal kinase jnk sirna attenuated endoglin proteins following ang induction addition pre treated ang induced endoglin egcg diminished binding activity electrophoretic mobility shift assay moreover luciferase assay results revealed egcg suppressed endoglin promoter activity ang induced cfs binding finally egcg jnk inhibitor found attenuated endoglin expression significantly ang induced cfs determined confocal microscopy following vivo acute myocardial infarction ami related myocardial fibrosis study well immunohistochemical confocal analyses treatment endoglin sirna egcg area myocardial fibrosis reduced attenuated left ventricular end diastolic systolic dimensions friction shortening hemodynamic monitor conclusion epigallocatechin gallate egcg attenuated endoglin expression myocardial fibrosis anti inflammatory effect vitro vivo novel suppressive effect mediated jnk pathway
total similar million mortalities occur due liver cancer annually worldwide although variety therapeutic methods available efficacy treatment present extremely limited due increased risk malignancy inherently poor prognosis liver cancer gene therapy considered promising option shown notable potential comprehensive therapy liver cancer keeping advances made development cancer molecular biology present study aimed investigate synergistic effects abilities hemagglutinin neuraminidase protein newcastle disease virus ndv pro apoptotic factor apoptin chicken anaemia virus interferon inducer interleukin antagonizing liver cancer therefore recombinant dna plasmid expressing three exogenous genes hemagglutinin neuraminidase constructed flow cytometry acridine orange ethidium bromide staining analysis caspase activity performed cell lines transfected recombinant dna plasmid addition week old cbl mice used establish hepatoma bearing mouse model mice tumor tissue analyzed immunohistochemistry scanning electron microscopy results present study revealed recombinant dna vaccine containing genes inhibited cell proliferation induced autophagy via mitochondrial pathway vivo vitro
background although ureaplasma species common organisms associated prematurity effects maternal fetal immune system remain poorly characterized methods rhesus macaque dams approximately gestation injected intra amniotically colony forming units ureaplasma parvum saline control fetuses delivered surgically days later performed comprehensive assessments inflammation immune effects multiple fetal maternal tissues results although parvum grew well amniotic fluid minimal chorioamnionitis parvum colonized fetal lung fetal systemic microbial invasion limited fetal lung inflammation mild elevations cxcl tumor necrosis factor tnf alpha ccl levels alveolar washes day inflammation detected fetal brain significantly parvum decreased regulatory cells tregs activated interferon gamma production tregs fetus detected uterine tissue day induced mild inflammation increased expression connexin gap junction protein involved labor conclusions parvum colonized amniotic fluid caused uterine inflammation without overt chorioamnionitis caused mild fetal lung inflammation profound effect fetal immune system decreasing tregs polarizing toward helper phenotype
background fatty acids substantial components lipids cell membranes form phospholipids review consists two parts present part aims describing fatty acid classification dietary sources biological functions second part focus fatty acid physiological roles applications human health disease results humans fatty acids produced endogenously due absence certain desaturases thus specific fatty acids termed essential linoleic alpha linolenic need taken diet fatty acids whose synthesis depends essential fatty acid intake include eicosapentaenoic acid docosahexaenoic acid found oily fish dietary sources saturated fatty acids animal products butter lard tropical plant oils coconut palm whereas sources unsaturated fatty acids vegetable oils olive sunflower soybean oils marine products algae fish oils saturated fatty acids related adverse health effects whereas unsaturated fatty acids especially monounsaturated polyunsaturated thought protective addition trans fatty acids shown negative effects health whereas conjugated fatty acids might beneficial lastly fatty acids main components lipid classes triacylglycerols phospholipids cholesteryl esters non esterified fatty acids conclusion fatty acids important biocompounds take part complex metabolic pathways thus major biological roles obtained various dietary sources determine type fat consumed consequently health outcome
background rickettsiosis potential life threatening infectious disease travelers clinical recognition always straightforward typical manifestations rash eschar may absent definite diagnosis based seroconversion therefore often delayed convalescent phase disease case presentation case report describe four patients severe travel related rickettsiosis two patients murine two patients scrub typhus acute phase diagnosis possible real time polymerase chain reaction serum blood conclusions despite limitations think polymerase chain reaction contribute significantly early diagnosis treatment rickettsial disease travelers
background despite current global trend reduction morbidity mortality neglected diseases dengue incidence increased occurrence areas expanded dengue also persists scientific technological challenge since effective treatment vaccine vector control public health intervention combining bibliometrics social network analysis methods support mapping dengue research development activities worldwide objectives aim paper map scientific scenario related dengue research worldwide methods use scientific publication data web science core collection articles indexed science citation index expanded sci expanded combine bibliometrics social network analysis techniques identify relevant journals scientific references research areas countries research organisations dengue scientific landscape findings results show significant increase dengue publications time tropical medicine virology frequent research areas biochemistry molecular biology central area network usa brazil productive countries mahidol university fundacao oswaldo cruz main research organisations centres disease control prevention central organisation collaboration network main conclusions findings used strengthen global knowledge platform guiding policy planning funding decisions well providing directions researchers institutions offering scientific community policy makers public health practitioners mapping dengue scientific landscape paper aimed contribute upcoming debates decision making planning dengue public health strategies worldwide
rhizoctonia cerealis causes sharp eyespot cereals pathogen survives mycelia sclerotia soil real time polymerase chain reaction qpcr assays based taqman chemistry highly suitable use dna extracted soil report first qpcr assay cerealis using taqman primers probe based unique sequence characterised amplified region scar assay highly specific amplify dna range binucleate rhizoctonia species isolates anastomosis groups rhizoctonia solani high sensitivity assay demonstrated soils using bulk dna extraction method sclerotia soil detected dna pathogen could also amplified asymptomatic wheat plants using assay soil samples fields different crop rotations cerealis frequently detected soils wheat grown soil pasture detected least frequently fields potatoes grown study demonstrates assays derived scar sequences produce specific sensitive qpcr assays
termination module nonribosomal peptide synthetases nrps polyketide synthases pks loads final product acid occasionally also accompanied cyclization upon hydrolysis employing thioesterase domains domains reductase domains domains short chain dehydrogenase reductase sdr family offer alternative offloading mechanism reducing phosphopantetheine ppant arm tethered peptidyl chain thioester aldehyde alcohol recent studies highlighted functional importance instance glycopeptidolipid gpl biosynthesis mycobacterium smegmatis resulting alcoholic group site subsequent modifications glycosylations mechanistic understanding domains function context multi modular nrps pks poorly understood study conformational differences functionally important loops reported previously identified new crystal form domain may relevant functioning context assembly line nrps pks enzymology propose concerted loop movement model allows gating cofactor binding enzymes enabling release final product substrate reached active site biosynthesis therefore distinct canonical single domain sdr family enzymes elsevier inc rights reserved
basal lamina basement membrane key physiological system participates physicochemical signaling tissue types formation function essential tissue maintenance growth angiogenesis disease progression immunology vitro models boyden transwell chambers common cell biology lab chip devices cells require apical basolateral polarization extravasation intravasation membrane transport chemokines cytokines chemotaxis cells key functions routinely studied models goal present study integrate semipermeable ultrathin polymer membrane precisely positioned pores diameter microfluidic device apical basolateral chambers selected poly lactic acid plla transparent biocompatible polymer prepare semipermeable ultrathin membranes pores generated pattern transfer using three step method coupling femtosecond laser machining polymer replication spin coating step fabrication process characterized scanning electron microscopy investigate reliability process fidelity pattern transfer order evaluate compatibility fabrication method organs chip technology porous plla membranes embedded polydimethylsiloxane pdms microfluidic devices used grow human umbilical vein endothelial cells huvecs top membrane perfusion basolateral chamber viability cells optical transparency membranes strong adhesion plla pdms observed thus confirming suitability prepared membranes use organs chip devices
endocannabinoid arachidonoylglycerol predominantly biosynthesized diacylglycerol lipase alpha dagl alpha cns selective inhibitors dagl alpha provide valuable insights role endocannabinoid signaling processes potential therapeutics treatment obesity neurodegenerative diseases describe development natural substrate based fluorescence assay dagl alpha using coupled enzyme approach continuous setup assay allows monitoring dagl alpha activity real time well plate format constitutes major improvement currently available radiometric based methods executed low throughput formats addition assay circumvents use radioactive material demonstrate assay used screen inhibitors dagl alpha activity using stearoyl arachidonoyl glycerol physiologically relevant natural substrate dagl alpha furthermore method employed measure dagl activity inhibition mouse brain membrane proteome consequently assay serve valuable tool rapid hit validation lead optimization dagl alpha inhibitors
human metabolism ethylhexanoic acid eha known metabolite important phthalates investigated using eha contaminated food results studies reveal major catabolic pathway eha human beta oxidation dominant final urinary metabolite identified quantified oxo ethylhexanoic acid oxo eha immediate methylation extract urine prior analysis former studies without precaution immediate methylation found heptanone major metabolite obviously artifact arising decarboxylation oxo eha
conventional relative gene expression analysis northern blotting pcr situ hybridization housekeeping genes glyceraldehyde phosphate dehydrogenase gapdh beta actin genes whose expression levels considered stable used control genes normalization rna quantitation however reported expression levels two control genes affected ischemia therefore searching novel control genes whose expression levels stable mouse model transient forebrain ischemia using genechip array set monitored expression levels approximately murine genes mouse hippocampus ischemia reperfusion select stable genes applied restricted criterion fold change expression level threshold adding statistical analysis criterion identified genes candidates control genes genechip data criterion gapdh beta actin genes included genes candidates control genes present findings might relevant use control genes quantitation rna particularly study mouse transient forebrain ischemia
plagl gene encodes homonymous zinc finger protein promotes cell cycle arrest apoptosis multiple pathways protein implicated metabolic genetic neoplastic illnesses molecular mechanisms protein plagl participates diverse processes remains elucidated review focus mainly molecular biology plagl relevance abnormalities several pathological processes
cryptosporidium giardia important causes diarrhoeal illness adequate knowledge molecular diversity geographical distribution parasites environmental climatic variables influence prevalence important effective control infection risk populations yet relatively little known epidemiology parasites africa cryptosporidium associated moderate severe diarrhoea increased mortality african countries parasites negatively affect child growth development malnutrition hiv status also important contributors prevalence cryptosporidium giardia african countries molecular typing parasites humans domestic animals wildlife date indicates complex picture anthroponotic zoonotic spill back transmission cycles requires investigation cryptosporidium available drug nitazoxanide ineffective hiv malnourished individuals therefore effective drugs high priority several classes drugs good efficacy exist giardia dosing regimens suboptimal emerging resistance threatens clinical utility climate change population growth also predicted increase malnutrition prevalence parasites water sources dedicated ordinated commitments african governments involving one health initiatives multidisciplinary teams veterinarians medical workers relevant government authorities public health specialists working together essential control prevent burden disease caused parasites
chromatin remodeling important epigenetic reprogramming human primordial germ cells however comprehensive chromatin state yet analyzed human fetal germ cells fgcs use nucleosome occupancy methylation sequencing method analyze genome wide chromatin accessibility dna methylome series crucial time points fetal germ cell development human mouse find nucleosome depleted regions ndrs human mouse fgcs covering large set germline specific highly dynamic regulatory genomic elements enhancers moreover find distal ndrs enriched specifically binding motifs pluripotency germ cell master regulators nanog sox gamma oct human fgcs indicating existence delicate regulatory balance pluripotency related genes germ cell specific genes human fgcs functional significance genes germ cell development vivo work offers comprehensive high resolution roadmap dissecting chromatin state transition dynamics epigenomic reprogramming human mouse fgcs
european winter moth operophtera brumata non native pest northeastern usa causing defoliation forest trees crops apples blueberries species known hybridize bruceata bruce spanworm native species across north america although known hybrid generations beyond study winter moth population genetics hybridization bruce spanworm developed two sets genetic markers single nucleotide polymorphisms snps microsatellites using genomic approaches types markers validated using samples two species hybrids identified snps variable microsatellite loci developed subset species diagnostic snps ten microsatellite loci could used hybrid identification validated ten microsatellite loci screening field collected samples species putative hybrids addition confirming presence hybrids reported previous studies found evidence multi generation asymmetric hybridization suggested occurrence hybrid backcrosses winter month bruce spanworm laboratory crosses winter moth females bruce spanworm males resulted higher proportion viable eggs reciprocal cross supporting pattern discuss possible roles population demographics sex chromosome genetic incompatibility bacterial symbionts causes asymmetrical hybridization utility developed markers future studies
genus gentiana largest gentianaceae family species however species growing qinghai tibet plateau processes adaptive evolution speciation within genus clear also genomic analyses could provide important information far complete chloroplast genome data genus still deficient second third sequenced members within gentianaceae report construction complete sequences gentiana robusta king hook gentiana crassicaulis duthie burk describe comparative study three gentiana genomes including genome gentiana straminea maxim published previously genomes highly conserved gene size gene content gene order rps pseudogene exon missing found common three repeat types five ssr types investigated number distribution similar among three genomes sixteen genome divergent hotspot regions identified across genomes could provide potential molecular markers phylogenetic studies gentiana boundary organizations gentianales genomes compared three different types boundaries observed six data partitions genomes gentianales used phylogenetic analyses different data partitions largely congruent phylogenetic tree constructed based fragments genomes commonly available species lamiids including species gentianales boraginaceae solanales lamiales result strongly supports position boraginaceae ehretia acuminata sister solanales bootstrap values study provides platform research molecular phylogenetics species order gentianales family gentianaceae notably respect speciation species identification
specialized species like arboreal folivores often develop beneficial relationships symbionts exploit ecologically constrained lifestyles although coevolution drive speciation specialization symbiont host symbiotic relationship indicative coevolution host symbiont tested coevolved relationships highly specialized two three toed sloths choloepus spp bradypus spp respectively symbiotic algae using cophylogenies phylogeography phylogeographic analysis showed biogeographic pattern sloth distribution found algal phylogeny found support congruence sloth algae phylogenies implying cospeciation bradypus lineage algae host switching occurred bradypus spp choloepus spp results support previously hypothesized symbiotic relationship sloths algae fur indicate coevolution may played role algae diversification broadly convergent evolution may facilitate host switching deeply diverged host lineages elsevier inc rights reserved
epitranscriptome refers relevant changes gene expression without changes rna sequences similar epigenetic changes epitranscriptomic changes general mediated post transcriptional chemical modifications rna species recently mrna modifications especially methyladenosine methyladenosine received significant attention proteins responsible generating removing recognizing modification identified eukaryotic cells including human mouse initially identified early however function modification intensively studied technical limitations recently using next generation sequencing ngs technology several groups revealed transcriptome wide distribution vitro vivo roles biological processes metabolism development review focuses recent progress mrna modification stem cell biology addition integrated landscape enrichments human mouse embryonic stem cells escs presented using publically available datasets
halogenated pyrroles halopyrroles common chemical moieties found bioactive bacterial natural products halopyrrole moieties mono dihalopyrrole containing compounds arise conserved mechanism proline derived pyrrolyl group bound carrier protein first halogenated elaborated peptidic polyketide extensions paradigm broken marine pseudoalteromonad bacterial biosynthesis coral larval settlement cue tetrabromopyrrole arises substitution proline derived carboxylate bromine atom understand molecular basis decarboxylative bromination biosynthesis sequenced two pseudoalteromonas genomes identified conserved four gene locus encoding enzymes involved complete biosynthesis total vitro reconstitution biosynthesis using purified enzymes biochemical interrogation individual biochemical steps show four bromine atoms installed action single flavin dependent halogenase bmp tetrabromination pyrrole induces thioesterase mediated offloading reaction carrier protein activates biosynthetic intermediate decarboxylation insights tetrabrominating activity bmp obtained high resolution crystal structure halogenase contrasted structurally homologous halogenase mpy forms dihalogenated pyrrole marinopyrrole biosynthesis structure guided mutagenesis proposed substrate binding pocket bmp led reduction degree halogenation catalyzed study provides biogenetic basis biosynthesis sets firm foundation querying biosynthetic potential production marine meta genomes
micrornas mirna small noncoding rnas affect broad range biological processes including tumorigenesis targeting gene products directly regulate cell growth human polynucleotide phosphorylase hpnpase old type ifn inducible exoribonuclease degrades specific mrnas small noncoding rnas present study examined effect enzyme mirna expression human melanoma cells mirna microarray analysis human melanoma cells infected empty adenovirus adenovirus expressing hpnpase old identified mirnas differentially specifically regulated hpnpase old one mir regulator cyclin dependent kinase inhibitor kip displayed robust regulation ensuing regulation kip expression hpnpase old also occurred multiple human melanoma cells upon ifn beta treatment using vivo immunoprecipitation followed northern blotting rna degradation assays confirm mature mir target hpnpase old inhibition hpnpase old shrna stable overexpression mir protected melanoma cells ifn beta mediated growth inhibition accentuating importance hpnpase old induction mir regulation mediating ifn beta action moreover uncover mechanism mirna regulation involving selective enzymatic degradation targeted overexpression hpnpase old might provide effective therapeutic strategy mir overexpressing ifn resistant tumors melanoma
precise transpiration prediction model thus becomes important tool greenhouse automatic irrigation management moreover leaf organ transpiration leaf area index basic variable estimate water lost still weak spot crop growth estimation paper two different leaf area index models established compared evolution real crop determined electronic planimeter considering temperature photosynthetically active radiation par main impact factors crop growth tep lai model based product thermal effectiveness par built estimate leaf area index dynamics tom lai model based tomato growth model also used estimate leaf area index explicit function number leaves vines finally results simulation models tep lai tom lai compared measured values moreover crop transpiration model established using empirical data sampled multi span greenhouse almeria spain greenhouse microlysimeter two different weight scales used obtain transpiration drainage values thus data collected used obtain model estimated water lost transpiration based back propagation neural network optimized using genetic algorithm nonlinear auto regressive model exogenous inputs model described different models estimated values leaf area index compared satisfactorily measured ones tep lai model chosen introduced input final transpiration model expected transpiration estimation inside conditions generates better results outside climate based model shows could used irrigation predictor data cheaper outside meteorological stations elsevier rights reserved
developed method plastid transformation eggplant solanum melongena solanaceous plant species plastid transformation eggplant achieved bombardment green stem segments pprva plastid expression vector carrying aada gene encoding aminoglycoside adenylyltransferase biolistic delivery pprva plasmid yielded transplastomic plants frequency two per bombarded plates containing stem explants integration aada gene plastome verified pcr analysis also southern blotting using rdna targeting sequence aada gene probe transplastomic expression aada gene verified pcr development transplastomic technology eggplant may open exciting possibilities novel gene introduction expression engineered plastome agronomic pharmaceutical traits
background fractional exhaled nitric oxide feno safe convenient test assessing airway inflammation potentially useful management patients chronic cough objective summarize current evidence diagnostic usefulness feno predicting inhaled corticosteroid ics responsiveness patients chronic cough methods systematic literature review conducted identify articles published peer reviewed journals february without language restriction included studies reported usefulness feno index test predicting ics responsiveness reference standard patients chronic cough target condition data extracted construct accuracy table study quality assessed quality assessment diagnostic accuracy studies results identified original studies prospective retrospective studies identified considerable heterogeneities study design outcome definitions thus unable perform meta analysis proportion ics responders ranged sensitivity specificity ranged respectively reported area curve ranged however studies prospective design lower prevalence asthma lower area curve values none measured placebo effects objective cough frequency conclusions find strong evidence support use feno tests predicting ics responsiveness chronic cough studies need randomized placebo controlled design use validated measurement tools cough standardization would facilitate development clinical evidence published elsevier inc behalf american academy allergy asthma immunology
skin appendages comprise largest fastest growing organ body performs multiple tasks maintains homeostatic control including regulation body temperature protection desiccation pathogen invasion skin perform functions assistance different immune cell populations monocyte derived cells imperative completion tasks comprehensive role macrophages langerhans cells establishing maintaining skin homeostasis remains incompletely defined however past decade innovations mouse genetics allowed advancements field review explore different homeostatic roles macrophages langerhans cells including wound repair follicle regeneration salt balance cancer regression progression skin understanding precise functions myeloid derived cells skin basal conditions help develop specific therapies aid skin hair follicle regeneration cutaneous cancer prevention
background mechanisms dna sequences expressed central preoccupation molecular genetics recently others reported diplomonad protist giardia lamblia coding regions several mrnas produced ligation independent rna species expressed distinct gnomic loci trans splicing introns found affect nearly many genes organism classical cis splicing introns findings raised questions incidence intron trans splicing across lamblia transcriptome across diplomonad diversity general however dearth transcriptomic data time prohibited systematic study questions methods leverage newly available transcriptornic data lamblia related diplomonad spironucleus salmonicida search trans spliced introns computational pipeline recovers four previously reported trans spliced introns lamblia suggesting good sensitivity results scrutiny thousands potential cases revealed single additional trans spliced intron lamblia helicase gene cases salmorticida intron differs previously reported trans spliced introns high degree streamlining core features lamblia trans spliced introns closely packed together revealing striking economy implementation seemingly inherently uneconomical molecular mechanism discussion results serve circumscribe role trails splicing diplomonads terms number genes effected taxonomically future work focus molecular mechanisms evolutionary origins phenotypic implications intriguing phenomenon
background salmonella enterica serovar typhi causative agent typhoid fever one important endemic pathogens non typhoidal salmonella serovars including typhimurium infantis enteritidis amongst prevalent serotypes worldwide developing areas iran aim study apply uniplex pcr rapid detection salmonella spp multiplex pcr simultaneous detection four common salmonella serovars iran methods current research done molecular biology research center baqiyatallah university medical sciences tehran iran detection salmonella spp pair primers used replicate chromosomal sequence four sets primers also designed amplify target genes four salmonella species including typhi three non typhoidal salmonella spp enteritidis infantis typhimurium assay specificity investigated testing different salmonella serovars additional non salmonella species results salmonella genus specific pcr yielded expected dna band salmonella spp strains tested uniplex multiplex pcr assays produced also expected fragments serovars typhi enteritidis typhimurium infantis respectively species specific primer pair set show cross reactivity tested salmonella serovars non related salmonella strains conclusion uniplex multiplex pcr protocols good specificity provide important tool rapid simultaneous detection differentiation four prevalent salmonella serovars iran
survey paper contains brief analysis publications included current issue scientific journal cytology genetics dedicated anniversary papers reflect scientific achievements authors field genetics cell biology underline potential two biological disciplines forming double helix journal
objective study effect different oxygen therapies rats carbon dioxide poisoning screening best spot oxygen therapy technology treating acute carbon dioxide poisoning methods healthy male sprague dawley rats randomly divided normal control group group carbon dioxide poisoning group group low concentration oxygen inhalation treatment group group high concentration oxygen inhalation treatment group group hyperbaric oxygen therapy group group various kinds oxygen therapies given contamination partial pressure oxygen partial pressure carbon dioxide pco arterial blood serum troponin ctni creatine kinase glutamic oxaloacetic transaminase ast gamma glutamyl transpeptidase ggt blood urea nitrogen bun potassium sodium chlorine rats group inspected lung brain tissues taken observing pathological changes results significant difference pco among oxygen therapy groups levels ctni ast group obviously lower groups level serum group obviously lower groups levels serum group obviously higher groups pathological change lungs group significantly better groups conclusions recommend medical units related conditions give hyperbaric oxygen therapy patients soon possible
establishing maintaining maternal fetal tolerance essential successful pregnancy failure immunological adaptation pregnancy leads severe complications abortion preterm delivery myeloid derived suppressor cells mdscs innate immune cells suppress cell responses expand pregnancy thus may play role tolerance induction human leucocyte antigen hla major histocompatibility complex mhc molecule immune modulatory properties expressed pregnancy investigated impact hla mdscs accumulation activation pregnant women demonstrate granulocytic mdscs mdscs express receptors hla namely immunoglobulin like transcript ilt ilt expression mdscs regulated pregnancy stimulation soluble hla shla increased suppressive activity mdscs induced mdscs peripheral blood mononuclear cells pbmcs led phosphorylation signal transducer activator transcription stat induction indoleamine dioxygenase ido myeloid cells effects shla mdsc accumulation mediated ilt results suggest interaction mdscs hla humans potential mechanism maintaining maternal fetal tolerance modulating mdsc function pregnancy via hla might provide new opportunities therapeutic manipulation immunological pregnancy complications
monitoring human metabolism crucial importance personalized medicine aim present work design interface circuit realize integrated platform detection endogenous exogenous metabolites implantable applications cyclic voltammetry chronoamperometry common methods metabolite detection propose cmos circuit implement two methods multi target detection scheme
high temperature requirement protease htra multitasking serine protease involved critical biological functions pathogenicity apoptosis cancer potent therapeutic target established terminal post synaptic density protein drosophila disc large tumor suppressor zonula occludens protein pdz domain htra plays pivotal role allosteric modulation substrate binding activation commonly reported members family interestingly htra exhibits additional level functional modulation unique terminus evident inhibitor apoptosis proteins binding cleavage phenomenon emphasizes multiple activation mechanisms far remain elusive using conformational dynamics binding kinetics enzymology studies addressed complex behavior respect defining global mode regulation activity findings distinctly demonstrate novel terminal ligand mediated triggering allosteric switch essential transforming htra proteolytically competent state pdz independent yet synergistic activation process dynamic analyses suggested occurs series coordinated structural reorganizations distal regulatory loops leading population shift towards relaxed conformer precise synergistic coordination among different domains might physiologically relevant enable tighter control upon htra activation fostering diverse cellular functions understanding complex rheostatic dual switch mechanism offers opportunity targeting various disease conditions tailored site specific effector molecules structured digital abstractby toby toby toby toby toby toby toby
tupaia belangeri tree shrew animal species whose genome significantly higher similarity primates rodents used biomedical research generate animal models reproduce human tumors faithfully rodents present first report cancer model mimicking human tumor genetics tree shrew engineering lentiviral system transduction mutant ras shrna tree shrew successfully generated malignant glioma tree shrew tree shrew glioma exhibited aggressive behavior relatively short latency markedly reduced animal survival remarkably biological features human high grade glioma necrosis microvascular proliferation pseudopalisading present tree shrew glioma furthermore genetic analysis tree shrew glioma revealed tumors clustered within mesenchymal subgroup human glioblastoma multiforme compared corresponding mouse glioma tree shrew gliomas markedly similar human glioblastoma gene expression profile tree shrew glioma model provides colleagues working field gliomas cancer general accurate animal model
polyoma papillomaviruses genome replication initiated binding large antigen respectively viral origin ori replication ori containing plasmid occurs cells transiently expressing viral proteins typically quantified southern blotting pcr facilitate study hpv dna replication developed cellular assays transient replication ori plasmid quantified using firefly luciferase gene located cis ori optimized conditions replication hpv ori plasmids resulted fold increase firefly luciferase levels respectively results validated using replication defective mutants inhibitors dna replication cell cycle progression quantitative high throughput assays greatly facilitate study hpv dna replication identification small molecule inhibitors process elsevier inc rights reserved
study question genome wide association study gwas data endometriosis provide insight novel biological pathways associated pathogenesis summary answer gwas analysis uncovered multiple pathways statistically enriched genetic association signals analysis stage disease highlighted novel variant mapk top pathways significantly associated endometriosis stage disease included several mitogen activated protein kinase mapk related pathways known already endometriosis complex disease estimated heritability date gwas revealed genomic regions associated endometriosis explaining heritability half heritability estimated due common risk variants pathway analyses combine evidence single variants gene based measures leveraging aggregate effect variants genes uncovering biological pathways involved disease pathogenesis study design size duration pathway analysis conducted utilizing international endogene consortium gwas data comprising surgically confirmed endometriosis cases controls european ancestry genotype data imputed genomes phase three reference panel gwas performed endometriosis cases stage revised american fertility society rafs rafs iii cases separately identified significant pathways compared pathways previously investigated literature candidate association studies participants materials setting methods comprehensive biological pathway databases msigdb including biocarta kegg pid sig panther utilized test enrichment genetic variants associated endometriosis statistical enrichment analysis performed using magenta meta analysis gene set enrichment variant associations software main results role chance first genome wide association analysis stage endometriosis revealed novel locus intronic single nucleotide polymorphism snp within mapk snp associated stage disease mapk also shown differentially expressed eutopic endometrium stage endometriosis cases controls stage disease total pathways enriched genetic endometriosis associations identified false discovery rate fdr pathways associated endometriosis grb sos provides linkage mapk signaling integrins pathway fdr wnt signaling fdr pcas linkage mapk signaling integrins pathway fdr stage endometriosis extracellular signal regulated kinase erk erk mapk fdr stage endometriosis two overlapping pathways related extracellular matrix biology core matrisome fdr ecm glycoproteins fdr genes arising endometriosis candidate gene studies performed date enriched interleukin signaling pathway apoptosis signaling pathway gonadotropin releasing hormone receptor pathway however pathways feature results based gwas data large scale data applicable limitations reasons caution analysis restricted variants near genes assigned pathways excluding intergenic variants gene based pathway definition registered databases iii women european ancestry wider implications findings top ranked pathways associated overall stage endometriosis particular involve integrin mediated mapk activation intracellular erk mapk acting downstream mapk cascade acting control cell division gene expression cell movement survival top enriched pathways stage disease include ecm glycoprotein pathways important extracellular structure biochemical support results highlight need increased efforts understand functional role pathways endometriosis pathogenesis including investigation biological effects genetic variants downstream molecular processes tissue relevant endometriosis additionally results offer support hypothesis least partially distinct causal pathophysiology minimal mild rafs moderate severe rafs iii endometriosis
microtubule cytoskeleton supports broad range cellular functions providing tracks intracellular transport supporting movement cilia flagella segregating chromosomes mitosis functions facilitated organizational dynamic plasticity networks important class enzymes alters dynamics depolymerizing kinesin like proteins use catalytic activities regulate end dynamics review discuss four topics surrounding depolymerizing kinesins provide historical overview studies focused motors discuss phylogeny second half discuss enzymology biophysics give overview known cellular functions discussion highlights fact depolymerizing kinesins exhibit diverse range design principles turn increases functional versatility cells
better understand interactions pathways activation detoxification metabolism putative carcinogen phip administered dose phip scheduled colon surgery blood urine collected next evaluated linear accelerator mass spectroscopy ams scintillation counting identify specific phip metabolites thermostable phenol sulfotransferase sulta phenotype correlated phip levels urine cypa activity negative correlation phip serum levels positive correlation urine phip levels low level radioisotope method determining influence phenotype metabolism significantly improve understanding interrelationships pathways provide critical foundation development individual risk assessment elsevier science ireland ltd rights reserved
cercospora leaf spot caused cercospora beticola significant threat production sugar table beet worldwide novo genome assembly beticola used develop eight polymorphic reproducible microsatellite markers population genetic analyses markers used along five previously described microsatellite loci genotype two beticola populations table beet fields new york usa high allelic genotypic diversity low population differentiation found fields linkage disequilibrium loci clone correction datasets attributed presence two distinct clonal lineages within populations linkage equilibrium loci one clusters supported presence sexual reproduction draft novo genome assembly help elucidate reproductive system beticola investigating evidence recombination beticola genome elsevier ltd british mycological society rights reserved
pre mrna fragile mental retardation gene fmr subject exon skipping alternative splice site selection generate isoforms expression function variants vivo yet fully explored present study investigated distribution fmr exon exon isoforms exon encodes extension domain one rna binding domains fmr gene product fmrp show exon variant proteins differentially interact kissing complex rna alternative splicing exon produces fmrps differing rna binding ability distinguished unique post translational modifications using semiquantitative pcr northern blotting found particular fmr exon exon isoforms change neuronal differentiation interestingly fmr exon variants display tissue specific developmental differences exon containing transcripts vary less altogether spatio temporal plasticity fmr mrna consistent complex rna processing mis regulated fragile syndrome elsevier inc rights reserved
powerful double hairpin molecular beacon dhmb developed cancer related kras gene detection based one two stoichiometry target dna detection dhmb execute signal transduction even exogenous element involved unlike conventional molecular beacon based one one interaction one target dna hybridizes one dhmb opens hairpin also promotes interaction two dhmbs causing separation two fluorophores quenchers leads enhanced fluorescence signal result target kras gene able detected within wide dynamic range detection limit indicating dramatic improvement compared traditional molecular beacons moreover point mutations existing target dnas easily screened potential application target species real samples indicated analysis pcr amplicons dnas dna extracted cell besides becoming promising candidate probe molecular biology research clinical diagnosis genetic diseases dhmb expected provide significant insight design dna probe based homogenous sensing systems
genes encoding monomer dimer type isocitrate dehydrogenase idh isozymes psychrotrophic bacterium pseudomonas psychrophila cloned sequenced open reading frames genes length corresponded polypeptides composed amino acids respectively deduced amino acid sequences showed high sequence identity psychrophilic bacteria colwellia maris colwellia psychrerythraea identity respective types putative idh genes bacteria genus pseudomonas identity two genes located opposite direction spacer bases order dimeric monomeric idh genes chromosomal dna analyses northern blotting terminal regions mrnas revealed transcribed independently expression monomer dimer type idh genes maris known cold acetate inducible respectively slight inductions low temperature acetate observed expression psychrophila monomer dimer type idh genes idh isozymes overproduced escherichia coli showed mesophilic properties contrast monomer dimer type idhs maris cold adapted mesophilic enzymes respectively substitution glu residue psychrophila monomeric idh lys corresponding residue conserved cold adapted monomeric idhs maris psychrerythraea site directed mutagenesis resulted decreased thermostability lowered optimum temperature activity suggesting residue involved mesophilic properties psychrophila monomeric idh
renal damage major cause sle associated mortality ifit expression elevated sle cases accordance previous studies therefore conducted animal study identify role ifit expression renal pathological changes female mrl lpr mice number female balb mice enrolled present study quantitative analysis urine protein complement anti dna antibody conducted pas staining tem analysis employed observe pathological changes renal tissue significant elevation urine protein anti dsdna reduction complement observed mrl lpr mice comparing controls age staining tem analysis observed several pathological changes glomerulus among mrl lpr mice including cellular enlargement basement membrane thickening increased cellularcasts linear regression analysis found optical density ifit inversely associated actin nephrin podocin synatopodin summary ifit expression associated podocytes damage capable suppressing proteins essential glomerular filtration
cytomegalovirus cmv frequent cause congenital infection worldwide estimated incidence developed countries live births burden disease related congenital cmv substantial leading non genetic cause sensorineural hearing loss important cause neurodevelopmental disabilities children despite clinical significance congenital cmv infection often goes undetected majority infected infants asymptomatic birth screening programs substantially implemented behavioral measures effective interventions aimed prevention maternal infection mother child transmission lacking due convergence recent advances diagnostic therapeutic strategies infants congenital cmv though field likely changing rapidly next years specifically highly sensitive screening test high throughput potential developed treatment infants symptomatically infected congenital cmv proven well tolerated effective improving long term hearing neurodevelopmental outcomes review highlights clinical importance congenital cmv infection developments laboratory diagnostics benefits antiviral therapy also identifies global efforts still required prevention maternal infection optimization antiviral therapy reduce burden congenital cmv disease
background generation scotland scottish family health study sfhs family based population cohort dna biological samples socio demographic psychological clinical data approximately adult volunteers across scotland although data collection cross sectional sfhs became prospective cohort due ability link routine electronic health record ehr data participants selected genotyping using large genome wide array methods sfhs analysed using genome wide association studies gwas test effects large spectrum variants imputed using haplotype research consortium hrc dataset medically relevant traits measured directly obtained ehrs hrc dataset largest available haplotype reference panel imputation variants populations european ancestry allows investigation variants low minor allele frequencies within entire sfhs genotyped cohort results genome wide associations run individuals using genotyped hrc imputed data present results range well studied quantitative traits obtained clinic visits serum urate measures obtained data linkage ehrs collected scottish national health service results replicated known associations additionally reveal novel findings mainly rare variants validating use hrc imputation panel example identified two new associations fasting glucose variants near rna wdr four new associations heart rate snps within csmd asph upstream htrf prokr gpcpd driven rare variants minor allele frequencies range proof principle use ehrs verification highly significant association urate levels well established urate transporter slca conclusions sfhs provides genetic data participants alongside range phenotypes well linkage national health service laboratory clinical records shown combination deeper genotype imputation extended phenotype availability make sfhs attractive resource carry association studies gain insight genetic architecture complex traits
non heading chinese cabbage brassica rapa ssp chinensis popular vegetable asian countries diamondback moth dbm plutella xylostella insect worldwide distribution main pest brassicaceae crops causes enormous crop losses transfer anti insect gene plant genome transgenic technology subsequent breeding insect resistant varieties effective approach reducing damage caused pest produced transgenic non heading chinese cabbage plants expressing potato proteinase inhibitor gene pinii tested pest resistance transgenic plants non heading chinese cabbages grown days buds formed used experimental materials agrobacterium mediated vacuum infiltration transformation forty one resistant plants selected seed harvested infiltrated plants based resistance young seedlings herbicide basta transgenic traits confirmed chlorophenol red test pcr genomic southern blotting results showed bar pinii genes integrated resistant plant genome bioassay insect resistance second generation individual lines transgenic plants showed dbm larvae fed transgenic leaves severely stunted higher mortality fed wild type leaves
reported attractive immunotherapy target mutated approximately half human cancers resulting inactivation often accumulation tumor cells peptides derived presented class mhc molecules may act tumor associated epitopes could targeted specific cells interestingly recently shown lack significant correlation expression levels tumors recognition tcr transduced cells better understand influence mutational status presentation mhc system cell antitumor reactivity generated several mutant constructs expressed hla cells upon culture specific cells measured specific recognition expressing target cells means cytokine secretion marker upregulation cytotoxicity parallel determined expression levels intracellular staining also examined relevance antigen presentation components recognition impact mutant expression cell cycle dynamics results show selected mutations altering protein stability modulate presentation cells leading differential immune reactivity inversely correlated measured protein levels thus may behave differently classical tumor antigens mutational status therefore taken account elaborating immunotherapy treatments cancer patients targeting
three processes act series accurately replicate eukaryotic nuclear genome major replicative dna polymerases strongly prevent mismatch formation occasional mismatches form proofread replication rare mismatches escape proofreading corrected mismatch repair mmr review focuses mmr light increasing knowledge nuclear dna replication enzymology rate specificity mismatches generated leading lagging strand replication consider differences mmr efficiency relation mismatch recognition signaling direct mmr nascent strand mismatch removal timing mmr studies refining understanding relationships generating repairing replication errors achieve accurate replication dna strands nuclear genome
interleukin cytokine known since long immunology mainly regarding effects cells cells demonstrated necessary cell cell proliferation lack causes immature immune cell arrest interestingly recent years certain studies strongly suggested role far beyond field immunology might direct indirect effect cancer review aims summarize role immunity role pathogenesis neoplasia
ability assess oxygenation within living cells much sought deeply understand normal pathological cell biology hypoxia red manufactured enzo life sciences advertised novel hypoxia detector dependent nitroreducatase activity sought use hypoxia red primary neuronal cultures test cell cell metabolic variability response hypoxic stress neurons treated min hypoxia labeled hypoxia red observed even normoxic conditions neurons expressed fluorescence robustly analysis chemical reactions biological underpinnings method revealed high uptake reduction dye due active nitroreductases normoxic cells independent oxygen availability
oral tolerance towards antigens encountered gut vital immune function gut immunity experimental models demonstrate efficacy feeding protein followed peripheral immunization measuring specific antibody titer previously shown exposure tetrachlorodibenzo pdioxin tcdd xenobiotic high affinity aryl hydrocarbon receptor ahr ligand destabilized ovalbumin ova mice ahr involved development differentiation function immune cells highly expressed gut epithelial cells gut immune cells used ahr deficient mice study role ahr show complete ahr deficiency undermines stability oral tolerance ova upon multiple immunizations despite renewed oral encounter antigen destabilization accompanied significant changes tgf rna gut tissue using conditional ahr deficient mouse lines identify cells major responsible immune cell type context findings add knowledge lack ahr signaling gut impairs important gut immune functions
recreational scuba diver wore second scuba regulator face scuba dive attached elastic rubber cord necklace surfacing diver left face became swollen process elimination items scuba equipment excluded potential causes dive equipment minus necklace confirmed involvement necklace pathogenesis hypersensitive reaction vitro immunocap ige assay positive latex kua subsequent patch testing contact dermatitis provoked reaction benzophenone stabalizer fourier transform infra red spectroscopy identified elastic ethylene propylene rubber containing additional unidentified compounds allergy natural rubber latex occurs many americans australians around three million american residents thought scuba dive year recreational divers therefore advised check necklaces typically worn around throat frayed ends exposed rubber filaments
transgene silencing common phenomenon higher plants microalgae present study analyzed transgene silencing macroalga pyropia yezoensis first report transgene silencing macroalgae transgenic lines generated transformation pygus gene hygromycin resistance gene ptaph histochemical gus staining detected pygus expression three lines southern northern blotting polymerase chain reaction pcr reverse transcription pcr analyses indicated pygus gene silenced lines interestingly pygus gene silencing transgenic line repeatedly initiated later stage developmental process monospore thallus asexual reproduction identified genes encoding argonaute dicer like protein major components rna silencing pathway genome transcripts yezoensis interestingly found dda motif piwi domain ago suggesting translational repression may major gene silencing pathway yezoensis study observation pygus gene silencing identification rna silencing components indicate gene transgene silencing machinery functions actively macroalga yezoensis results useful study regulation gene expression rna silencing mechanisms pyropia species related macroalgae
objectivesto investigate gene expression profile human gingiva following surgical wounding methodsten volunteers one side palate wounded five days later biopsies harvested wounded healing gingiva contra lateral site normal gingiva tissue samples processed gene expression rna seq real time pcr immunohistochemistry gene set enrichment pathway analysis also performed resultsseven hundred genes significantly differentially expressed healing gingiva among genes twofold change expression genes regulated regulated several previously reported expressed gingiva increased expression mmp ccl spp muc cthrc mmp serpine decreased coch siah igfl syt real time pcr confirmed significantly changed mrna levels selective genes tested gene set enrichment analysis revealed several significantly enriched biological pathways immunohistochemistry confirmed protein expression muc cthrc ctgf syt normal healing gingiva conclusionsthis first comprehensive analysis human gingival transcriptome surgical wound healing offers novel insights participating molecular biological mechanisms present results could serve basis future investigations gingival wound healing following surgical traumatic type injury
backgroundthe role braf mutations cancerogenesis demonstrated several solid tumor types however salivary gland tumors genetic alteration uncommon role still remains unclear thus aim study analyze braf protein expression braf mutation status codon malignant benign salivary gland tumors methodsstudies performed archived formalin fixed paraffin embedded tissue sections derived patients underwent surgery tumors salivary gland immunohistochemical staining ihc tissue microarray slides performed evaluation braf protein expression automatic molecular diagnostics platform used evaluation mutations codon braf gene resultsihc cytoplasmic expression braf protein found two cases one case adenocarcinoma nos one three one case carcinoma pleomorphic adenoma one five although ihc studies nuclear braf protein expression found analyzed cases nine cases pleomorphic adenoma three five cases ductal carcinoma one nine case mucoepidermoid carcinoma one five case carcinoma pleomorphic adenoma cases negative polymerase chain reaction pcr based analyses braf mutations codon conclusionsin studied salivary gland cancers pcr based prove mutations braf detected molecular analyses necessary rapid molecular arrays identification specific mutations optimal individualized targeted therapies
human microbiome consists microorganisms occupying skin mucous membranes intestinal tract human body contact mucosal immune system human microbiome balanced interplay defence mechanisms immune system symbiotic pathogenic microbial factors microbial antigens metabolites systemic autoimmune diseases sads rheumatoid arthritis systemic lupus erythematosus sjogren syndrome immune system deranged chronic inflammatory state autoantibodies important hallmark specific bacteria dysbiosis human microbiome lead local mucosal inflammation increased intestinal permeability proinflammatory lymphocytes cytokines spread systemic circulation increase risk inflammation distant anatomical sites joints salivary glands increased intestinal permeability increases antigen exposure risk autoantibody production human microbiome indeed plays critical role sads finding holds great promise new therapeutic strategies diet interventions probiotics prebiotics review provides background human microbiome mucosal immunity gut oral cavity gives summary current knowledge microbiome sads connection
quantitative pcr qpcr important tool pathogen detection however use different qpcr components calibration materials dna extraction methods reduces comparability laboratories result false diagnosis discrepancies patient care wider establishment metrological framework nucleic acid tests could improve degree standardisation pathogen detection quantification methods applied clinical context achieve accurate methods need developed implemented reference measurement procedures facilitate characterisation suitable certified reference materials digital pcr dpcr already used pathogen quantification analysing nucleic acids although dpcr potential provide robust accurate quantification nucleic acids assessment actual performance characteristics needed implemented metrological framework allow adequate estimation measurement uncertainties four laboratories demonstrated reproducibility expanded measurement uncertainties dpcr quantification dna human cytomegalovirus calibration common reference material using whole virus material extracted dna intermediate precision coefficients variation three consecutive experiments noted furthermore discrepancies estimated mean dna copy number concentrations laboratories less twofold dna extraction main source variability data demonstrate dpcr offers repeatable reproducible method quantification viral dna due satisfactory performance considered candidate reference methods implementation metrological framework
fluorescence fluctuation based methods non invasive microscopy tools especially suited study dynamical aspects biological processes methods examine spontaneous intensity fluctuations produced fluorescent molecules moving small femtoliter sized observation volume defined confocal multiphoton microscopes quantitative analysis intensity trace provides information processes producing fluctuations include diffusion binding interactions chemical reactions photophysical phenomena review present basic principles widespread fluctuation based methods discuss implementation standard confocal microscopes briefly revise examples applications address relevant questions living cells ultimate goal methods cell biology field observe biomolecules move interact targets perform biological action natural context iubmb life
structure function studies steroid transforming enzymes often use site directed mutagenesis inform mechanisms catalysis effects steroid binding data reported terms changes steady state kinetic parameters cat cat however dissection function limited since cat governed rate determining step complex macroscopic kinetic constant often site directed mutagenesis lead change rate determining step revealed reporting decrease cat alone issues made complex considered many steroid transforming enzymes one substrate product present case using transient kinetics performed stopped flow spectrometry assign rate constants discrete steps multi substrate reactions use interpret enzyme mechanism effects disease engineered mutations demonstrate fluorescence kinetic transients used measure ligand binding may accompanied isomerization steps revealing existence new enzyme intermediates also demonstrate single turnover reactions provide lim chemical step steroid substrate binding coupled kinetic isotope effect measurements provide information transition state intermediates also demonstrate multiple turnover experiments provide evidence either burst phase kinetics reveal slow product release step linear phase kinetics chemical step rate determining assignments becomes straightforward analyze effects mutations use examples hydroxysteroid dehydrogenases akrcs human steroid beta reductase akrd illustrate utility approach members aldo keto reductase akr superfamily elsevier ltd rights reserved
excretion pattern arsenic species seafood intake varies widely depending species ingested individual handling previously reported urinary excretion arsenicals following single dose seafood report excretion patterns subjects following days daily consumption either cod salmon blue mussels potato control followed period low diet seafood groups total tas plasma urinary excretion tas arsenobetaine dimethylarsinate dma increased significantly intervention confirming single dose study dma excreted apparently endogenously formed arsenicals ingested total tas excretion cod blue mussel salmon groups respectively twice amounts single dose study indicating accumulation arsenicals cod group rapid excretion single dose associated lower total blood less accumulation two weeks seafood indicating lower accumulation blue mussels group inorganic ias excretion increased significantly whilst methylarsonate strongly increased indicating possible toxicological concern repeated mussel consumption elsevier ltd rights reserved
full length cdnas cucumber mosaic virus cmv strain causing necrosis nicotiana glutinosa obtained pcr using viral genomic rnas templates cdnas cnw genomic rnas cloned sequenced results indicated rnai respectively accordingly accession number infectious rna transcripts cdna clones cmv inoculated onto glutinosa seedlings host plants displayed necrosis symptom whist cmv fny induced typical mosaic symptoms pseudorecombination cmv cnw fny genomic rnas genetic determinant necrosis phenotype mapped rna chimeric infectious clones consisting partial sequences rna derived cnw cnw fny respectively obtained overlapping pcr pathogenic analysis chimeric rna revealed gene utr cmv rna responsible necrotic pathotype northern blotting analysis reflected necrotic non necrotic viruses accumulated similar levels genomic rnas host plants therefore necrotic phenotype induced glutinosa related level accumulation cmv genomic rnas
interaction integral membrane proteins lipid bilayer component biological membranes expected mutually influence proteins membrane present quantitative evidence manifestation lipid protein interactions liposomal membranes reconstituted actively pumping atpase terms nonequilibrium shape fluctuations contain relaxation time tau robust independent specific fluctuation modes membrane case pumping ions analysis flicker noise temporal correlation spectrum liposomes leads tau similar equal comparing favorably intrinsic reaction cycle time enzymology
adaptive growth uterus pregnancy critical event involves increased synthesis extracellular matrix ecm proteins dynamic remodeling smooth muscle cell smc ecm interactions previously found dramatic increase expression mrnas encode fibronectin alpha integrin receptor itga pregnant rat myometrium near term since myometrium term exposed considerable mechanical stretching uterine wall growing fetus objective present study examine role regulation itga expression late gestation labor using myometrial tissues unilaterally pregnant rats investigated temporal changes itga gene expression gravid empty uterine horns northern blotting real time pcr combination immunoblotting immunofluorescence analyses temporal spatial distributions itga proteins addition studied effects early progesterone withdrawal itga mrna levels itga protein detection time points examined itga mrna levels increased gravid uterine horn compared empty horn immunoblot analysis confirmed higher itga protein levels myometrium associated gravidity immunodetection itga consistently high longitudinal muscle layer increased gestational age circular muscle layer gravid horn remained low empty horn itga immunostaining gravid horn exhibited continuous layer variable thickness associated directly surfaces individual smcs contrast effects stretch appear regulate itga expression speculate reinforcement itga interaction contributes myometrial hypertrophy remodeling late pregnancy facilitates force transduction contractions labor anchoring hypertrophied smcs uterine ecm
cell cytotoxicity chediak higashi syndrome chs strongly impaired lytic granules released upon target cell contact contributing several defects typical severe immunodeficiency correction cell defects chs improve outcome hematopoietic stem cell transplantation proposed therapy investigated cell functions chs patient cord blood transplantation ability vitro treatment restore transplant strong defect cell mediated natural antibody dependent cytotoxicity well ifn gamma production could restored normal levels vitro treatment cytokine also caused appearance smaller lysosomal granules orientation towards target cell contact area thus suggesting general capacity restore cell effector functions moreover transplant although successful engraftment cell cytotoxicity resulted still partially impaired one year almost normal ten years anyhow fully recovered vitro treatment taken together results indicate wide capacity restore cell effector functions able reverse altered cytotoxic activity lytic granule pattern cytokine production observed chs patient european federation immunological societies published elsevier rights reserved
well controlled trophoblast invasion maternal fetal interface crucial normal placentation successful pregnancy otherwise pathological conditions pregnancy occur preeclampsia previous studies demonstrated unique long binding protein ulbp ligand natural killer group nkg receptor uterine natural killer unk cells upregulated placenta patients preeclampsia present majority decidua unk important role pregnancy aim present study determine role ulbp trophoblast cell invasion closely associated occurrence preeclampsia present study ulbp expression levels placentas collected cesarean section women preeclampsia normal pregnant women determined immunohistochemistry reverse transcription quantitative polymerase chain reaction western blotting effects ulbp extravillous trophoblast cell line htr svneo invasion mediated via unk cells underlying mechanisms investigated mrna protein expression levels ulbp significantly upregulated preeclamptic placentas compared normal controls ulbp inhibited htr svneo cells via regulation biological functions unk cells including downregulation nkgd expression unk cells stimulation production cytokines chemokines affect extravillous cytotrophoblast invasion unk cells ulbp may important role pathophysiology preeclampsia modification biological functions unk cells may affect trophoblast invasion
sinorhizobium meliloti harbours genes encoding orthologs ribonuclease rnase rnase principle endoribonucleases escherichia coli bacillus subtilis respectively analyse role rnase meliloti rna mutant minitn insertion rnase encoding gene compared wild type difference length like ribosomal rna rrna observed complementation mutant northern blotting primer extension revealed rnase necessary end maturation rrna two rrna fragments rrna federation european biochemical societies published elsevier rights reserved
activity bioorganic chemistry group bcg within department organic chemistry technology budapest university technology economics related various areas synthetic chemistry biotechnology enzymology review gives overview research activity group covering development synthetic organic chemistry methods stereoselective biotransformations lipases ammonia lyases biocatalysts batch continuous flow reactions novel enzyme immobilization methods enzyme structural mechanistic studies experimental computational techniques
primary lymphoma adrenal glands rare non cell lymphoma associated pyothorax also rare report first autopsy case non cell lymphoma bilateral adrenal glands year old woman pyothorax aggressive clinical course immunohistochemically tumor cells showed cdro cda granzyme tia alk addition tumor cells strongly eber positive situ hybridization genomic dna tumor cells cell receptor rearrangements detected southern blotting finally diagnosed case extranodal cell lymphoma nasal type
background polyphenol resveratrol rsv found skin red grapes reported exhibit anticancer properties antitumor effects rsv gastrointestinal tract gained considerable interest due high exposure tissue dietary compound one hallmarks cancer cells particular metabolism mainly relying glycolysis atp production rather mitochondrial oxidative phosphorylation although rsv described act calorie restriction mimetic modulating energy metabolism normal tissues little efforts done study effects polyphenol metabolism cancer cells taking account aim study explore metabolic effects poly phenol colon cancer methods oxygen consumption atp levels western blotting molecular biology techniques carried characterize metabolic signature rsv colon cancer cells results paradoxically cytotoxic effects rsv associated increase oxygen consumption supported mitochondrial biogenesis increased fatty acid oxidation partial reversion warburg effect followed hyperpolarization mitochondria membrane ros production leading increased apoptosis conclusions results propose anticancer mechanisms rsv could reside targeting cancer cell metabolism promoting mitochondrial electron transport chain overload ultimately increasing ros production general significance results shed new light anticancer mechanism rsv supporting ability compound potentiating effects chemotherapy elsevier rights reserved
oryza minuta tetraploid wild relative cultivated rice family poaceae possesses bbcc genome contains genes confer resistance bacterial blight white backed wbph brown bph plant hoppers based importance wild species study aimed understand phylogenetic relationships minuta oryza species depth analysis composition diversity chloroplast genome analysis revealed genome size typical quadripartite structure consisting pair inverted repeats separated small large single copies representative genes randomly distributed microsatellites genomic organization gene order content codon usage similar typical angiosperm genomes approximately forward tandem palindromic repeats detected minuta genome comparison complete minuta genome another eleven oryza species showed high degree sequence similarity relatively high divergence intergenic spacers phylogenetic analyses conducted based complete genome sequence shared genes matk gene showed topologies minuta forms single clade parental punctata thus complete minuta genome provides interesting insights valuable information used identify related species reconstruct phylogeny
study examined phylogeography barnacle fistulobalanus albicostatus inhabits mangroves estuarine shores west pacific differentiation mitochondrial cytochrome oxidase subunit coi ribosomal rna genes specimens albicostatus examined samples locations west pacific ranging honshu southern china results revealed albicostatus comprises two major clades exhibiting coi divergence ranging clade demonstrated widest distribution ranging japan china divided three subclades occurring south china sea okinawa honshu korea qingdao clade determined endemic okinawa two endemic lineages occur island thus albicostatus resembles several inter tidal species clades endemic okinawan waters nevertheless contrast rocky inter tidal barnacles tetraclita spp chthamalus malayensis albicostatus found separated continental oceanic populations instead divided northern southern clades probably yangtze river discharge limits gene flow northern southern populations
peptide nucleic acids pnas stronger affinity greater specificity oligonucleotides binding dna rna potential utility probes molecular biology applications study novel approach labeling pna radioiodine avoided solubility issues poor labeling encountered trying radioiodinate pnas directly solution developed approach purpose designed prosthetic group incorporated radioiodinatable tyrosine tripbenylphosphonium tpp moiety synthesized latter organic cation combines properties good solubility aqueous organic solvents strong retention reverse phase hplc following radioiodination tpp based prosthetic group phosphate buffer prosthetic group purified coupled terminal amine mer pna solid phase resin cleavage deprotection pna resin presence tpp group resulted clean separation radioiodinated pna unlabeled pna yielding high specific activity probe single hplc run example potential molecular biology application resultant labeled pna probe used detect mrna lcn gene northern blotting elsevier inc rights reserved
chinese tallow sapium sebiferum promising landscape bioenergy plant measuring gene expression quantitative real time polymerase chain reaction qrt pcr provide valuable information gene function stably expressed reference genes normalization prerequisite ensuring accuracy target gene expression level among different samples however reference genes chinese tallow systematically validated study candidate reference genes gapdh ubq rps sand tip act pdf apt tbp tub investigated qrt pcr samples including different tissues plants treated sucrose cold stresses data calculated four common algorithms genorm bestkeeper normfinder delta cycle threshold delta tip gapdh stable tissue specific experiment gapdh cold treatment gapdh ubq sucrose stresses least stable genes tip respectively comprehensive results showed apt gapdh ubq top ranked stable genes across samples stability lowest experiments selected reference genes validated comparing expression profiles chalcone synthase gene chinese tallow different samples results help improve accuracy gene expression studies chinese tallow
order investigate rice functional centromeres oscenh gfp chimeric gene constructed transformed indica rice variety zhongxian mediated agrobacturium integration exogenous genes transgenic plants confirmed pcr southern blotting transgenic plants grow normally whole life time like zhongxian significant defects detected either mitosis meiosis transgenic plants overlapping gfp signals anti cenh foci mitotic meiotic cells generation plants indicated gfp successfully fused cenh gfp signals well represent cenh locations chromosome evaluate applicability transgenic plants genetic studies fluorescence situ hybridization fish using rice centromeric tandem repetitive sequence cento probe conducted zygotene chromosomes pollen mother cells pmcs revealed gfp signals overlapping cento fish signals showing cento one key elements constituting rice functional centromeres immunofluorescent staining using anti alpha tublin antibody anti pair antibody chromosomes mitosis meiosis stages transgenic plants reveals oscenh gfp transgenic plants widely used studying rice molecular biology especially tagging functional centromeres living cells tissues
group streptococci gas express soluble surface bound virulence factors secreted streptokinase allelic variants exhibit varying abilities activate host plasminogen gas pathogenicity associated activation localization resulting plasmin bacterial surface promote dissemination various mechanisms gas usurp host proteolytic system discussed including molecular sexuality mechanism conformational activation zymogen subsequent proteolytic activation substrate center dot kpg center dot catalytic complexes substantial progress made delineate processes unified mechanism coats bacteria direct indirect binding pathways involving plasminogen binding group streptococcal like pam protein host fibrin ogen transgenic mouse models using human optimized mimic infections variants humans define invivo combined mechanisms variants pam
bioinformatics field solidly settled control molecular biology incorporates extensive variety branches knowledge structural biology genomics gene expression studies bioinformatics application computer technology management biological information genomic signal processing gsp techniques connected around bioinformatics keep assuming essential part investigation biomedical issues gsp refers using digital signal processing dsp methods genomic data dna sequences analysis recently applications gsp bioinformatics obtained great consideration identification dna protein coding regions identification reading frames cancer detection others cancer one dangerous diseases world faces raised death rate recent years known medically malignant neoplasm detection early stage yield promising approach determine take actions treat risk gsp method used detect cancerous cells often caused due genetic abnormality systematic review discusses gsp applications bioinformatics generally gsp techniques used cancer detection especially presented collect recent results reached point new subject research
viable bacterial cells genetic material stably maintained arctic permafrost long geological time seasonal melting permafrost strata excluded access surface ancient highly invasive species increased pathogenicity mycoplasmas successful pathogens humans mammals birds insects plants high genome plasticity ability avoid immune response host organism metagenomic approach allowed predict mycoplasma diversity arctic permafrost number mycoplasma dna fragments soil deposits comparable age similar years origin late pleistocene ice complexes abundant compared microorganisms enough chance presence living mycoplasmal cells permafrost dna fragments human animal insect plant pathogens identified ubiquitous mycoplasma acholeplasma laidlawii undisputed leader number identified sequences three metagenomes may indicate higher adaptive capacity powerful metabolic potential laidlawii among mollicutes
dichloropropane dcp dichloromethane dcm possible causative agents associated development cholangiocarcinoma employees working printing plant osaka japan however reports demonstrated association agents cholangiocarcinoma rodent carcinogenicity studies moreover combined effects compounds fully elucidated present study evaluated vivo mutagenicity dcp dcm alone combined livers gpt delta rats six week old male gpt delta rats treated dcp dcm dcp dcm oral administration weeks dose mgkg body weight dcp mgkg body weight dcm used carcinogenesis study performed national toxicology program vivo mutagenicity analyzed gpt mutation spi assays livers rats addition gene protein expression cype gstt major enzymes responsible genotoxic effects dcp dcm analyzed quantitative polymerase chain reaction western blotting gpt spi mutation frequencies increased dcp dcm group additionally significant changes gene protein expression cype gstt group results indicated dcp dcm dcp dcm significant impact mutagenicity livers gpt delta rats experimental conditions copyright john wiley sons ltd
intimate partner violence ipv major health concern united states acog world health organization describes ipv physical sexual psychological harm current former intimate partner due psychosocial depth nature discussions within genetic counseling sessions patients may disclose discuss ipv relates sexual well reproductive overall health study aims assess role ipv screening counseling intervention genetic counseling practice investigating incidence experiences attitudes ipv among genetic counseling patients patients receiving genetic counseling urban metropolitan hospital anonymously surveyed experiences perspectives ipv topic discussion genetic counseling sessions among eligible patients completed survey females male identified lgbt ages incidence ipv group majority participants never asked ipv healthcare provider would felt comfortable answering questions ipv healthcare provider would felt comfortable answering questions ipv genetic counselor perspectives participants notably ipv history provided insights role genetic counselors areas ipv screening counseling training
tested two main evolutionary hypotheses association immunity personality risk parasitism hypothesis predicts proactive bold exploratory risk taking individuals vigorous immune defenses increased risk parasite exposure contrast pace life hypothesis argues proactive behavioral styles associated shorter lifespans reduced investment immune function mechanistically associations immunity personality arise personality differences often associated differences condition stress responsiveness intricately linked immunity investigate association personality measured proactive exploration novel environment three indices innate immune function non specific first line defense parasites wild superb fairy wrens malurus cyaneus also quantified body condition hemoparasites none detected chronic stress heterophil lymphocyte ratio circulating corticosterone levels end behavioral test cort subset birds found fast explorers lower titers natural antibodies result consistent pace life hypothesis previously documented higher mortality fast explorers species interactive effect exploration score duration captivity immune indices suggests personality related differences stress responsiveness underlie differences immunity even though behavioral style modulate effect captivity cort taken together results suggest reduced constitutive investment innate immune function proactive individuals elsevier inc rights reserved
pediatric age particularly newborn infants drug efficacy safety influenced growth development drug absorption distribution metabolism excretion adme thanks fast development pharmacogenomics pharmacogenetics drug therapy promises adapted genetic profile individual reducing considerably side effects drugs increasing efficacy interindividual variability drug response well known adults children variability multifactorial considering intrinsic extrinsic factors drug distribution neonate influenced variety age dependent factors total body water content distribution variations role drug transporters blood tissue protein binding blood tissue perfusion development enzymes involved human metabolism classified categories expressed whole part fetal period silenced expressed low levels within years birth expressed relatively constant levels throughout fetal development increased extent postnatally whose onset expression occur third trimester substantial increase noted first years birth besides intrinsic aspects influencing pharmacokinetics neonatal period important events inborn acquired diseases environment finally pharmacogenetics pharmacogenomics thousands deaths every years caused fatal drug reactions among potential causes severity disease treated drug interactions nutritional status renal liver functions also inherited differences drug metabolism genetic polymorphism adverse drug reactions adrs among pediatric patients shown three times frequent adults august national institute child health human development nichd addressed patient safety issues nicu recognizing understand prevent adverse events systematic research education safety issues needed concepts terms adme pharmacogenetics relative single gene pharmacogenomics relative many genes becoming evident perspective new concept individualized medicine goal identify group patients responds positively patients nonresponders experiences adverse reaction drug dose interindividual variability response drug mostly dependent dna sequence variations across human genome haplotype map hapmap present still big distance beween knowledge genetic practical application model drug profile genetic genomic profile single patient neonatal period effects growth pharmacodynamic processes help optimizing dosage neonatal frequently used medicines thereby minimizing toxicity increasing efficacy useful create accurate dosage adjustments according week development
youn lee lim yoon lim jung yeum park youn lee lee ikawa okabe tsujimoto lee bis deficiency results early lethality metabolic deterioration involution spleen thymus physiol endocrinol metab first published october doi ajpendo bcl interacting cell death suppressor bis also known bag cair involved antistress antiapoptotic pathways addition bcl bis binds several proteins suggesting diverse functions normal pathological conditions better define physiological function bis vivo developed bis deficient mice cre loxp system targeted disruption exon bis gene demonstrated southern blotting pcr western blotting showed intact truncated bis protein synthesized bis mice heterozygotes fertile appeared normal bis deficient mice showed growth retardation died birth relative weight thymus spleen reduced total numbers white blood cells splenocytes thymocytes significantly reduced compared wild type littermates serum profiles indicated significant hypoglycemia well decrease triglyceride cholesterol levels expression profiles metabolic genes indicated gluconeogenesis beta oxidation activated liver bis mice activation well decrease peripheral fat induction fatty liver appears adaptive response hypoglycemia study reveals absence bis considerable influences postnatal growth survival possibly due nutritional impairment
intervertebral disc ivd joint unique structure functions lying adjacent vertebrae provides primary support elasticity required spine move stably various aspects ivd long studied researchers seeking better understanding dynamics aging subsequent disorders article review surgical anatomy imaging modalities molecular biology lumbar ivd clin anat wiley periodicals inc
melanoma one aggressive types skin cancer rapidly increasing incidence rate disease largely considered incurable patients diagnosed metastatic melanoma survival five years despite recent advances anti melanoma chemo immunotherapies available drugs relatively toxic responsive limited subset lesions currently topical pharmacotherapy demonstrated effective approach treatment various skin cancers also vitro testing melanoma cell lines murine melanoma models identified number relatively safe effective phytochemicals review described use topical pharmacotherapy treatment skin cancers melanoma treatment drugs targeting mapk pathway also discussed long non coding rnas therapeutics targeting associated pathways looks quite promising treatment melanoma moreover natural anticancer compounds reported anti melanoma effects also described present better understanding genetics epigenetics initiation progression melanoma needed identification novel biomarkers development targeted therapeutics melanoma elsevier inc rights reserved
brain plays central role organismal aging sensitive aging related functional impairments pathologies insights processes underlying brain aging basis positively impact brain health using high throughput rna sequencing quantitative polymerase chain reaction pcr monitored cerebral gene expression mice throughout whole lifespan months differentially expressed genes clustered characteristic temporal expression profiles revealed distinct change months period mice die functional annotation genes indicated participation protection cancer oxidative stress specifically enriched pathways differentially expressed genes higher expression versus months found glutathione metabolism chemokine signaling pathway whereas lower expressed enriched focal adhesion pathways cancer therefore conclude brains old mice protected certain aspects aging particular cancer might impact organismal health lifespan elsevier inc rights reserved
background high serum basal tryptase sbt levels identified risk factor venom food induced severe allergic reactions aim study compare sbt levels children different severity actual drug hypersensitivity reactions dhrs age sex matched controls without history dhrs method patients years age history immediate type dhrs manifested culprit drug intake included following enda european network drug allergy inquiries patients evaluated skin provocation tests define actual drug hypersensitive patients serum levels determined patients controls results children patients male median age interquartile range years diagnosed drug hypersensitive ninety eight controls also included sbt levels drug hypersensitive patients without anaphylaxis control group similar respectively sbt levels patients sole cutaneous symptoms mild anaphylaxis moderate severe anaphylaxis also comparable onset dhrs occurring drug intake positive results skin tests culprit drug classification patients according different age groups years years years years correlate sbt levels conclusion sbt levels children actual drug hypersensitivity would risk factor severe systemic reactions contrary children allergic reactions food insect venom
early onset epileptic encephalopathy eoee consists heterogeneous group epilepsy phenotypes recent technological advances molecular biology also rapidly expanded genotype eoee genes involved diverse molecular pathways including ion channels synaptic structure transcription regulation cellular growth implicated eoee mitochondrial aminoacyl trna synthetase plays key role mitochondrial protein synthesis attaching different amino acids trna tail recently linked epilepsy phenotype report novel homozygous missense mutation gene encodes human mitochondrial phenylalanyl trna synthetase fars four patients two nonconsanguineous korean families four patients suffered intractable seizures started age months seizure types variable including infantile spasms myoclonic seizures often prolonged although initial development seemed normal relentless regression seizure onset occurred patients etiologic investigation including brain imaging metabolic studies reveal specific etiology reviewed epilepsy phenotypes six additional fars mutation positive patients suggest fars considered one genetic causes eoee elsevier rights reserved
hydrogen promising alternative fossil fuel source clean energy thermophilic biohydrogen production beneficial obtaining high production yield review recapitulates basic metabolic pathways bacteria hydrogen production enzymes involved various thermophilic hydrogen producing pathways microorganisms also focuses current status thermophilic biohydrogen production fermentation commercially viable substrates agricultural residues use metabolic engineering attain certain physiological desirable characteristics producing microorganisms culture conditions types bioreactors used reviewed major obstacles industrial production biohydrogen like low volumetric hydrogen production environmental impact identified review identified current limitations commercial thermophilic hydrogen production suggested methods like use heat exchangers effluent recirculation reduce production cost copyright john wiley sons ltd
animals engage associations bacterial symbionts understanding mechanisms host immune systems beneficial bacteria communicate fundamental question fields immunology symbiosis hawaiian bobtail squid euprymna scolopes engages two known symbioses binary relationship light organ symbiont vibrio fischeri bacterial consortium within specialized organ female reproductive system accessory nidamental gland ang scolopes well developed circulatory system allows immune cells hemocytes migrate tissues including light organ ang association fischeri hemocytes thought number roles management symbiosis including recognition non symbiotic bacteria contribution chitin nutrient source fischeri hemocytes hypothesized recognize bacteria interactions pattern recognition receptors microbe associated molecular patterns colonization fischeri shown affect bacteria binding behavior gene expression proteome hemocytes indicating symbiont modulate host immune function ang hemocytes also observed interacting residing bacterial community model host scolopes offers unique opportunity study innate immune system interacts binary consortial symbiosis mini review recapitulate known role hemocytes light organ association offer future directions understanding immune cells interact multiple types symbioses
extraskeletal myxoid chondrosarcoma emc indolent translocation associated soft tissue sarcoma high propensity metastases using clinical sequencing approach genomically profiled patients metastatic emc elucidate molecular biology identify potentially actionable mutations also evaluated potential predictive factors benefit sunitinib multi targeted tyrosine kinase inhibitor reported activity subset emc patients january april six patients emc participated clinical sequencing research study high quality dna rna isolated matched normal samples underwent comprehensive next generation sequencing whole oncoseq capture exome tumor normal tumor polya capture transcriptome expression levels sunitinib targeted kinases measured transcriptome sequencing kdr pdgfra kit ret flt flt previously reported ewsr nra translocation identified patient tumors however recurring genomic abnormalities detected ret expression significantly greater patients emc relative types sarcomas except liposarcoma folate receptor overexpressed two patients study demonstrated similar translocation associated sarcomas mutational profile metastatic emc limited beyond pathognomonic translocation clinical significance ret expression emc explored additional pre clinical investigations emc may help elucidate molecular mechanisms contributing emc tumorigenesis could translated clinical setting
cowpea trypsin inhibitor cpti reported insecticidal properties wide range insects year old insect resistant oil palm elaeis guineensis jacq variety tenera assigned cpti first transgenic oil palm tree generated transformation pdm pcambia plasmids immature embryos oil palm via particle bombardment pcr analyses confirmed tested cpti frond leaves root tissue genomic samples showed presence cpti transgene partial pdm expression cassette consisting actin promoter sequence act whole cpti coding sequence nos terminator sequence fully recovered cpti genome using actf nostr primer pair subsequent pcr analysis moreover southern blotting analysis showed presence two hybridized fragments size bamhi digested genomic dna also demonstrated stable integration transgene cpti genome amplification pcr product using cpti gene specific primer pair clearly implicated expression cpti transcript quantitative study expression cpti gene carried using sybr green quantitative real time polymerase chain rection qrt pcr assay revealed remarkably higher expression cpti cpti tree compared non transformed oil palm tree together data proven successful gene transfer fold increase cpti transcript accumulation leaves cpti tree could ultimately confer greater resistance insect pest invasion interestingly data present study also suggest simple integration pattern contributes significantly stability high transgene expression transgenic plants
background human cytomegalovirus hcmv infections found throughout body especially epithelial tissue animal model established inoculation hcmv strain coinoculation hepatitis virus hev ligated sacculus rotundus vermiform appendix living rabbits specimens collected animals sacrificed half hours infection results virus found capable reproducing specimens pcr western blot severe inflammation damage found hcmv infected tissue viral protein could detected high amounts mucosal epithelium lamina propria immunohistochemistry immunofluorescense moreover strong positive signals lymphocytes macrophages lymphoid follicles quantitative statistics indicate lymphocytes among epithlium cells increased significantly viral infection groups conclusions results showed hcmv hev hcmv efficiently infect rabbits vivo ligated intestine loop inoculation present study successfully developed infective model vivo rabbit ligated intestinal loop hcmv pathogenesis study rabbit model helpful understanding modulation gut immune system hcmv infection
solid tumors contend adapt hostile micro environment includes limited availability nutrient fuels oxygen presence hypoxia stabilizes transcription factor hif results numerous cellular adaptations including increased flux glucose glycolysis increasingly sophisticated analysis tumor oxygenation revealed large gradients oxygen tension significant regions severe hypoxia approximate present investigation demonstrated significant increase glycolytic flux rate tumor spheroids exposed severe hypoxia associated uniform pimonidazole adduct formation elevated levels hif myc resulted elevated expression glut mct transporters addition increased activity pfk comparison observed normoxia however protein expression enzymatic capacity gpdh ldh reduced severe hypoxia clearly effects exposure severe hypoxia lead significantly abridged hif response yet one still able elevate glycolytic flux prevent loss intermediates anabolism cell biochem wiley periodicals inc
plant beta glucanases involved plant defense development little data available expression rice glucanases developmental tissues various stresses study cloned characterized twenty seven rice beta glucanases osglu total putative glucanases osglu genes obtained pcr cdna library classified seven groups group vii according dna amino acid sequence homology analysis expression twenty seven osglu genes northern blotting revealed differentially expressed different developmental tissues well response plant hormones biotic stress high salt etc osglu group clearly expressed stem leaf also induced strongly aba grisea osglu induced earlier higher levels incompatible grisea interaction compatible one taken together findings suggest twenty seven rice osglu gene products play diverse roles plant defense also hormonal responses development
promethins shown present vertebrates examined far yet little known date invertebrates isolated cdna encoding promethin like homolog gut cdna library amphioxus branchiostoma belcheri cephalochordate occupying nodal position transient invertebrates vertebrates contained open reading frame corresponding protein amino acids primary structural examination showed deduced promethin like homolog transmembrane protein three potential transmembrane helices resembling vertebrate promethins phylogenetic analysis showed belcheri promethin like homolog located base vertebrate counterparts suggesting represents archetype vertebrate promethins northern blotting situ hybridization histochemistry revealed tissue specific expression pattern promethin like gene like mammalian promethins first report invertebrate promethin like homolog paving way insights evolution function promethins
animal models used study many aspects human disease test therapeutic interventions however important features human biology replicated animals even nonhuman primates transgenic rodents engineered human genes human microbial pathogens infect animals metabolism many xenobiotics different human beings animals advent transgenic immune deficient mice made possible generate chimeric animals harboring human tissues cells including hepatocytes liver plays central role many human specific biological processes mice humanized livers used model human metabolism liver injury gene regulation drug toxicity hepatotropic infections
assessing distribution metabolism toxic compounds body measurements always feasible ethical technical reasons computer modeling offers reasonable alternative variability complexity biological systems pose unique challenges model building adjustment recent tools population pharmacokinetics bayesian statistical inference physiological modeling brought together solve problems example modeled distribution metabolism tetrachloroethylene perc humans derive statistical distributions parameters physiological model perc basis data monster model adequately fits prior physiological information experimental data estimate relationship perc exposure fraction metabolized obtained median population estimate fraction inhaled tetrachloroethylene metabolized exposure levels exceeding current occupational standards confidence interval levels approaching ambient inhalation exposure ppm median estimate fraction metabolized much higher confidence interval disproportionality taken account deriving safe exposure limits tetrachloroethylene deserves verified experiments
micrornas small noncoding rnas regulate gene expression repressing translation target cellular transcripts increasing evidences indicate mirnas different expression profiles play crucial roles numerous cellular processes delivery expression transgenes cancer therapy must specific tumors avoid killing healthy tissues many investigators shown transgene expression suppressed normal cells using vectors responsive microrna regulation overcome problem mir exhibits downregulation many types cancer cells chosen posttranscriptional regulatory systems mediated micrornas study psicheck vector carrying four tandem copies target sequences mir utr renilla luciferase gene constructed renilla luciferase activity psicheck vector lower mcfa cells high mir expression compared control condition additionally overexpression mir mcf cells low expression level mir showed reduction renilla luciferase activity psicheck vector inclusion mir target sequences utr renilla luciferase gene feasible strategy restricting transgene expression breast cancer cell line sparing breast normal cell line international union biochemistry molecular biology inc
examine molecular events hippocampus associated aging acupuncture effect employed cdna arrays providing data genes define transcriptional patterns male month old samp homologous samr selected randomly divided four groups control group control group acupuncture group pio non acupoint group points consisted shanzhong zhongwan qihai zusanli xuehai spio found points stimuli could completely partly reverse genes expression profiles hippocampus aging simultaneously genes related brain aging affected acupuncture well meanwhile non acupoint effect aging unrelated genes expression little negative effect aging related genes verified array results pcr northern blotting three genes related oxidative damage closely including hsp hsp conclusion acupuncture could potential intervention retard molecular events aging mammals elsevier ireland ltd rights reserved
toxicology highly interdisciplinary field studying adverse effects chemicals living organisms requires sensitive tools detect effects initial implementation single molecule fluorescence detection tools quickly recognized potential contribute greatly many different areas scientific inquiry intervening time technical advances field generated ever improving spatial temporal resolution enabled application single molecule fluorescence increasingly complex systems live cells review give overview optical components necessary implement common versions single molecule fluorescence detection discuss current applications enzymology structural studies systems biology nanotechnology presenting technical considerations unique area study along noteworthy recent results also highlight future directions potential revolutionize areas study exploiting capabilities single molecule fluorescence microscopy
glutamate present brain average concentrationtypically mmfar excess amino acids glutamate containing vesicles brain concentration glutamate may even exceed yet glutamate major excitatory neurotransmitter concentration amino acid cerebral extracellular fluid must kept lowtypically remarkable gradient glutamate different cerebral compartments vesicles cytosol mitochondria extracellular fluid attests extraordinary effectiveness glutamate transporters strict control enzymes glutamate catabolism synthesis well defined cellular subcellular compartments brain major route glutamate ammonia removal via glutamine synthetase glutamate ammonia ligase reaction glutamate also removed conversion inhibitory neurotransmitter aminobutyrate gaba via action glutamate decarboxylase hand cerebral glutamate levels maintained action glutaminase various ketoglutarate linked aminotransferases especially aspartate aminotransferase mitochondrial cytosolic forms branched chain aminotransferases although glutamate dehydrogenase reaction freely reversible owing rapid removal ammonia glutamine amide direction glutamate dehydrogenase reaction brain vivo mainly toward glutamate catabolism rather toward net synthesis glutamate even hyperammonemia conditions hyperammonemia large increase cerebral glutamine content small changes levels glutamate ketoglutarate thus channeling glutamate toward glutamine hyperammonemia results net synthesis carbon units increase carbon units accomplished part ammonia induced stimulation anaplerotic enzyme pyruvate carboxylase suggest glutamate may constitute buffer bulwark changes cerebral amine ammonia nitrogen although glutamate transporters briefly discussed major emphasis present review enzymology contributing maintenance glutamate levels normal hyperammonemic conditions emphasis also placed central role glutamate glutamine glutamate glutamine gaba neurotransmitter cycles neurons astrocytes finally provide brief selective discussion neuropathology associated altered cerebral glutamate levels
tremella fuciformis one higher basidiomycetes basidiospore reproduce yeast like conidia also called blastospore budding yeast like conidia fuciformis monokaryotic easy culture submerged fermentation similar yeast good recipient cell exogenous gene expression study two expression vectors pglg gfp containing gpd promoter gfp gene pglg hph containing gpd promoter hph gene constructed lowest sensitive concentration hygromycin blastospore determined three types media experiments showed lowest sensitive concentration hygromycin blastospore medium intact blastospores transformed expression vector pglg hph electroporation putative transformants obtained selective medium experimental results showed effective parameters electroporation intact blastospores obtained using stm buffer cells blastospores transformation volume plasmid electric pulse voltage stillness culturing liquid medium electroporation transformation conditions efficiency reached colonies dna transformation plasmid pglg gfp pglg hph ratio performed electroporation optimal parameters putative transformants obtained selective medium eight randomly selected colonies vast putative transformants analyzed pcr detection southern blotting experiments showed gfp integrated genomes three transformants transformation efficiency green fluorescence observed laser scanning confocal microscope gfp positive transformants indicates exogenous gfp expressed effectively yeast like conidia fuciformis
rht rht carried chinese wheat triticum aestivum line aibian allele rht locus among rht alleles little known rht although determines extreme dwarf phenotype wheat cloned functionally characterized rht using combination southern blotting target region sequencing gene expression analysis transgenic experiments found rht allele generated tandem segmental duplication tsd region resulting two copies rht two copies rht tsd three fold effective reducing plant height single copy transformation segment containing tandemly duplicated copy rht resulted level reduction plant height original copy aibian results suggest changes gene copy number one important sources genetic diversity changes could directly associated important traits crops
pluripotent stem cells pscs popular model system investigating development tissue regeneration repair although much known molecular mechanisms regulate balance self renewal lineage commitment pscs spatiotemporal integration responsive signaling pathways core transcriptional regulatory networks complex partially understood moreover measurements made populations cells reveal average properties underlying regulatory networks obscuring fine detail discuss reconstruction regulatory networks individual cells using novel single cell transcriptomics proteomics order expand understanding molecular basis pluripotency including role cell cell variability within psc populations ways networks may controlled order reliably manipulate cell behavior
tuberculosis one main etiologies evoke context lymphocyte pleurisy however diagnosis difficult based mycobac teriology enough sensitive time consuming histology requires invasive biopsy gesture literature review carried med line summarizes main meta analyzes reviews originator publications english biomarkers classic innovative studied diagnosis tuberculous pleurisy among immuno biochemical markers interferon gamma ifn gamma isoenzyme adenosine deaminase ada total adenosine deaminase ada seem relevant respective sensitivities specificities molecular biology pcr xpert mtb rif sensitivity much higher direct examination providing rapid diagnostic confirmation specificity resistance rifampicin screening release assay interferon gamma igra less effective sensitivity specificity blood sensitivity specificity pleural fluid biomarkers including several cytokines might interest still evaluation innovative methods particularly determination ada use pcr xpert mtb rif find place diagnostic algorithm pleurisy
providing access quantitative genomic data key ensure large scale data validation promote new discoveries thecellmap org serves central repository storing analyzing quantitative genetic interaction data produced genome scale synthetic genetic array sga experiments budding yeast saccharomyces cerevisiae particular thecellmap org allows users easily access visualize explore functionally annotate genetic interactions extract reorganize subnetworks using data driven network layouts intuitive interactive manner
aberrant expression scavenger receptor class type reported several human cancers nevertheless roles scavenger receptor class type clear cell renal cell carcinoma remain unclear aim study evaluate diagnostic prognostic value scavenger receptor class type clear cell renal cell carcinoma messenger rna level scavenger receptor class type clear cell renal cell carcinoma tissues detected quantitative reverse transcription polymerase chain reaction protein level determined western blot immunohistochemistry lipid content clear cell renal cell carcinoma tissues normal kidney tissues differentiated oil red hematoxylin eosin staining diagnostic value scavenger receptor class type determined receiver operating characteristic curve prognostic significance scavenger receptor class type assessed kaplan meier analysis cox regression analysis results showed expression scavenger receptor class type clear cell renal cell carcinoma tissues messenger rna protein level much higher normal kidney tissues receiver operating characteristic curve analysis exhibited significant value area curve confidence interval strong sensitivity confidence interval specificity confidence interval kaplan meier analysis revealed patients higher scavenger receptor class type expression shorter progression free survival time cox analysis indicated scavenger receptor class type independent prognostic biomarker conclusion findings implied scavenger receptor class type might serve diagnostic independent prognostic biomarker clear cell renal cell carcinoma
prion protein infamous involvement group neurodegenerative diseases known transmissible spongiform encephalopathies longstanding quest decipher physiological function cellular isoform prp discovery participation selfrenewal hematopoietic neural stem cells cast new spotlight potential role stem cell biology however still little known cellular molecular mechanisms play combining vitro vivo murine models prp depletion establish prp deficiency severely affects notch pathway plays major role neural stem cell maintenance document absence prp neuroepithelial cell line primary neurospheres associated drastically reduced expression notch ligands receptors resulting decreased levels notch target genes similar alterations notch pathway recovered neuroepithelium prnp embryos developmental window encompassing neural tube closure addition line notch defects data show absence prp results altered expression nestin olig well ncadherin distribution provide evidence prp controls expression epidermal growth factor receptor egfr downstream notch finally unveil negative feedback action egfr notch prp whole study delineates molecular scenario prp takes part self renewal neural stem progenitor cells
mammalian glutamate dehydrogenase gdh mitochondrial enzyme catalyzes reversible oxidative deamination glutamate alpha ketoglutarate ammonia reducing nad nadp nadh nadph links amino acid carbohydrate metabolism contributing krebs cycle anaplerosis energy production ammonia handling redox homeostasis although gdh one first major metabolic enzymes studied decades ago role cell biology still incompletely understood however growing interest novel gdh isoenzyme emerged via duplication primates underwent rapid evolutionary selection concomitant prefrontal human cortex expansion also anaplerotic function gdh gdh currently sharp focus relates biology glial tumors neoplasias used antibodies specific human gdh hgdh human gdh hgdh study expression isoenzymes human tissues results revealed hgdh hgdh expressed human brain kidney testis steroidogenic organs however distinct hgdh hgdh expression patterns emerged thus sertoli cells human testis strongly positive hgdh negative hgdh conversely hgdh showed high levels expression human liver hepatocytes virtually devoid hgdh human adrenals hgdhs densely expressed steroid producing cells hgdh expression pattern matching cholesterol side chain cleavage system involved steroid synthesis similarly human ovaries placenta hgdh hgdh densely expressed estrogen producing cells addition hgdh housekeeping enzyme also expressed cells lack endocrine function regarding human brain study cortical sections using immunofluorescence confocal microscopy revealed hgdh hgdh expressed cytoplasm gray white matter astrocytes within coarse structures resembling mitochondria additionally hgdh localized nuclear membrane subpopulation astrocytes vast majority oligodendrocytes precursors remarkably hgdh specific staining detected human cortical neurons different expression patterns emerged one pattern observed large cortical neurons pyramidal morphology hgdh specific labeling cytoplasmic structures resembling mitochondria distributed either cell body axon cell surface close proximity astrocytic end feet encircle glutamatergic synapses another pattern observed small cortical neurons round dense nuclei hgdh specific staining found nuclear membrane detailed description observations functional implications suggesting gdh flux used different cells serve unique functions presented
aim analyze expression profiles human gastric cancer related gene gcrg human gastric signet ring cell carcinoma tissues perform bioinformatics analysis gcrg methods situ hybridization used explore gcrg expression pattern paraffin embedded gastric tissues including cases signet ring cell carcinoma intestinal type adenocarcinoma normal gastric mucosa northern blotting used analyze differences gcrg expression stomach signet ring cell carcinoma intestinal type adenocarcinoma tissues online software including blast multalin blat applied bioinformatics analysis national center biotechnology information ncbi university california santa cruz ucsc databases used analyses results situ hybridization signal appeared blue precipitates restricted cytoplasm ten cases gastric signet ring cell carcinoma normal gastric mucosal epithelium pyloric glands showed high gcrg expression low gcrg expression observed gastric intestinal type adenocarcinoma normal gastric glands northern blotting revealed gcrg regulated signet ring cell carcinoma tissue regulated intestinal type adenocarcinoma tissue blast multalin analyses revealed gcrg sequence similarity orf sequence human long interspersed nuclear element retrotransposons line blat analysis indicated gcrg mapped chromosomes gcrg found integrate intron flanking region clotting factor genes conclusion gcrg active member family regulated human gastric signet ring cell carcinoma wjg rights reserved
global level increase healthcare costs need assess economic impact incorporation new technologies different health disorders different countries scarce information regarding costs incurred use current new diagnostic tests tuberculosis vantage point incorporation within healthcare systems high burden countries present study aimed assess mean cost activity based cost laboratory diagnosis tuberculosis means conventional techniques detect labtest molecular test kit general high complexity hospital public health system brazil cost analysis performed means primary data collected mycobacteria molecular biology laboratory mean cost activity based cost respectively centrifuged bacilloscopy ziehl neelsen auramine direct bacilloscopy culture loweinstein jensen solid medium detect labtest kit calculation abc used making decisions administrators best method assessing costs conventional techniques molecular method providing real value tests need calculate abc mean cost various scenarios incorporating new technologies health institutions
cyadox novel quinoxaline dioxide potential development substitute banned veterinary drugs carbadox olaquindox paper using pigs test subjects metabolic mechanism cyadox oxide reduction liver demonstrated exist two metabolic mechanisms oxide reduction cyadox enzymatic non enzymatic routes found cyadox enzymatically reduced cyadox monoxide cyadox monoxide process catalyzed aldehyde oxidase xanthine oxidase cytosol cytochrome reductase microsomes hand cyadox reduced cyadox monoxide non enzymatic reduction mediated heme groups catalase cytochrome supposed owing position side chain cyadox oxide oxide bonds quinoxaline ring different biochemical activities caused cyadox shunted distinct metabolic mechanisms additionally research gives first evidence fad nad dependent non enzymatic catalase reduction heterocyclic oxide research provides basic foundation formulation safety controls animal products properties metabolism heterocyclic oxides
mini review highlights photophysical properties fluorescent molecular logic gates responsive acids oxidants particularly developed laboratory past years review pays tribute earlier developments lay foundation emerging class molecules logic gates incorporate design concepts based photoinduced electron transfer cross fertilization fluorophore spacer receptor fluorophore spacer electron donor formats molecular logic gates explored detail consist anthracene naphthalimide fluorophores receptor electron donor typically alkyl amines ferrocene respectively emerging class molecule numerous probable uses notably corrosion science geochemistry molecular cell biology biomedical diagnostics
study enzymology parameters antibiotics affecting enzyme activity phosphogluconate dehydrogenase pgd extracted livers fish lake van chalcalburmas tarichi investigated important enzyme producing nadph reductive power protecting cell oxidative agents producing reduced glutathione crude enzyme solution obtained using affinity chromatography method native molecular weight enzyme similar composed two subunits identical molecular weights similar exhibited sodium dodecyl sulfate polyacrylamide gel electrophoresis temperature optimal conditions pgd degrees respectively enzyme showed optimal activity ammonium sulfate solution addition vitro effects clindamycin phosphate streptomycin sulfate lincomycin antibiotics enzyme activity investigated
laccases promising candidate crosslinking milk proteins stirred fermented milks applied post processing step due acidic optimum reported literature rebodying gel improvement structure laccase preparation trametes versicolor lower oxidation activity ultrafiltration permeate model buffer systems optimum applied stirred skim milk gels significant change storage modulus apparent viscosity yoghurt occurred confocal laser scanning micrographs showed porous structure milk gel fresh cheese samples improved rheological properties competing crosslinking activity peptidolytic activity assumed smaller peptides detected acidified milk fluorescence mass spectrometry laccase preparation returned mainly laccase sequences although exclude proteases indicates radical mechanism laccases may lead protein degradation industrial relevance enzymatic modification milk proteins alter structure fermented milk gels even create new structures rheological properties improved via crosslinking thus reducing costs due addition protein powders stabilisers innovative approach combining biotechnology food science engineering investigated study interesting enzyme manufacturers dairy companies aims least partially fill knowledge gap enzymology real world application dairy products however enzymatic treatment additional step also incurs costs taken account elsevier ltd rights reserved
background understanding effects pretreatment anaerobic digestion sludge waste wastewater treatment plants becoming increasingly important impetus moves towards utilization sludge renewable energy production although field sludge pretreatment progressed significantly past decade critical questions concerning underlying microbial interactions remain unanswered study metagenomic approach adopted investigate microbial composition gene content contributing enhanced biogas production sludge subjected novel pretreatment method maintaining days compared documented methods ultrasonic thermal thermal alkaline results results showed pretreated sludge attained maximum methane yield approximately fold higher blank pretreated sludge set day microbial metabolic consortium shifted extensively towards enhanced biodegradation subsequent pretreatment providing insight enhanced methane yield prevalence methanosaeta thermophila methanothermobacter thermautotrophicus together functional affiliation enzymes encoding genes suggested acetoclastic hydrogenotrophic methanogenesis pathway additionally alternative enzymology methanosaeta observed conclusions study first provide microbiological understanding improved biogas production subsequent novel waste sludge pretreatment method knowledge garnered assist design efficient pretreatment methods biogas production future
common cause familial frontotemporal lobar degeneration tar dna binding protein pathology ftld tdp found expansion hexanucleotide repeat ggggcc noncoding region gene corf hippocampal sclerosis hpscl common finding ftld tdp objective screen presence corf hexanucleotide repeat expansions pathologically confirmed cohort pure hippocampal sclerosis cases outside setting ftld tdp alzheimer disease using recently described repeat associated non atg ran translation crant antibody found highly specific cftd als identified single pure hpscl autopsy case repeat expansion corf chpscl mutation screening also performed repeat primed polymerase chain reaction confirmed southern blotting chpscl patient year history slowly progressive amnestic syndrome clinical diagnosis probable neuropsychological testing revealed memory impairment deficits cognitive domains autopsy showed hippocampal sclerosis tdp immunoreactive neuronal inclusions relatively limited limbic lobe structures neuritic pathology immunoreactive frequent tdp amygdala hippocampus frequent positive neuronal inclusions present cerebellar granule neurons typical corf mutation carriers significant ftld motor neuron disease crant found sensitive specific autopsy confirmed series hpscl cases findings patient suggest clinical pathologic spectrum corf repeat expansion wider frontotemporal dementia motor neuron disease including cases progressive amnestic dementia restricted tdp pathology associated hpscl
cardiomyocytes prone variations cell cycle endoreduplication continuing rounds dna synthesis without karyokinesis cytokinesis acytokinetic mitosis karyokinesis cytokinesis atypical cell cycle variations result polyploid multinucleated cells rather cell division therefore determine cardiac turnover regeneration crucial importance correctly identify cardiomyocyte nuclei number nuclei per cell cell cycle status especially true use nuclear markers identifying cell cycle activity thymidine analogues pcna phh present methods recognizing cardiomyocytes nuclearity determining cell cycle activity use two published transgenic systems myh mch transgenic mouse line unequivocal identification cardiomyocyte nuclei cag egfp anillin mouse line distinguishing cell division cell cycle variations combined together two systems ease study cardiac regeneration plasticity
lipases triacylglycerol acylhydrolases ubiquitous biocatalysts known catalyze hydrolysis water insoluble triglycerides aqueous medium carry reverse reaction synthesis organic solvent rich medium microbial lipases received great deal attention field food technology pharmaceutical sciences chemical detergent industries due stability selectivity mild operation conditions broad substrate specificity despite advantages low activity stability displayed organic medium restricted commercial application organic synthesis researchers explored alternative ways modify enzymes making suitable use non conventional media context harvesting lipases solvent tolerant microbes recently become attractive approach microbes able grow presence high concentrations organic solvents generally known detrimental effect microorganisms microbes survive novel adaptation mechanisms secretion solvent stable enzymes efficient functionality solvent rich media enzymes could useful bioconversion non conventional media current review approach described emphasis characteristics applications genetic aspect lipases genus pseudomonas
identified hydrophobic kda protein cox novel component yeast mitochondrial supercomplex comprising respiratory complexes iii multi dimensional native denaturing electrophoretic techniques used identify proteins interacting cox majority cox protein found non covalently bound complex moiety iii supercomplexes population cox observed exist disulfide bond partnership cox subunit complex pronounced growth phenotype cox deficiency observed indicating cox may play critical role cox enzymology speculate cox may serve regulate support cox protein respiratory supercomplexes assembled absence cox protein however pattern slightly differs wild type iii supercomplex appearance catalytic activities complexes iii observed normal respiration comparable wild type long cells cultivated normal growth conditions stress conditions elevated temperatures resulted mild decrease respiration non fermentative media cox protein absent elsevier rights reserved
objective perform population based study rheumatoid arthritis patients order evaluate efficacy safety pharmacologic treatments methods patients enrolled inclusion criteria newly diagnosed already diagnosed high disease activity hda das starting biologic dmards bdmards already diagnosed hda continuing conventional dmards cdmards following data collected demographics clinical laboratory features imaging prescribed drugs parameters except immunology imaging performed yearly repeated follow evaluations months thereafter every months order evaluate clinical response eular response criteria used gold standard results newly diagnosed patients patients started bdmards patients continued cdmards enrolled april march rheumatology centres emilia romagna region statistical analyses showed relative risk ratio rrr moderate response patients started bdmards newly diagnosed sex age health assessment questionnaire statistically significant rrr confirmed patients started bdmards good response well newly diagnosed increase adverse events among bdmards found looking infections neoplasia differences highlighted started bdmards continued cdmards conclusion results line already published papers british swedish registries greater likelihood good response demonstrated longstanding starting cdmards hda bdmard started also good safety profile demonstrated
atlantic bluefin tuna bft thunnus thynnus one largest top predator fish inhabiting pelagic ecosystems north atlantic ocean mediterranean sea extensively overexploited recent decades however mediterranean sea mixing rates eastern central western basins yet fully finally resolved date electronic tagging otolith genetic markers still disentangle pattern tuna movements population structuring basin essential background proper management bft fisheries used expressed sequence tag linked est linked microsatellites explore population dynamics adaptive evolution mediterranean thynnus purpose est linked microsatellites genotyped tuna individuals mediterranean sea several methods used explore population genetic structuring estimate detect signals local adaptation bayesian clustering results indicated presence single cluster corroborated also correspondence analysis pairwise fsrs similarly two methods used detection outlier loci lositan bayescan reveal pattern suggesting presence selective pressure est simple sequence repeat ssr used results suggest low level polymorphism detected study could ascribed presence relatively conserved regions flanking microsatellites genomic regions probably involved physiological responses local adaptation elsevier rights reserved
antibody crystallizable fragment recognized effector proteins part immune system pathogens produce proteins bind order subvert evade immune response structural characterization determinants protein association essential improve understanding immune system molecular level develop new therapeutic agents furthermore binding peptides proteins frequently used purify therapeutic antibodies although several structures protein complexes available numerous others yet determined protein protein docking could used investigate protein complexes however improved approaches necessary efficiently model cases study docking based structural bioinformatics approach developed predicting structures protein complexes based available set ray structures protein complexes three regions loosely corresponding three turns within structure defined containing essential features protein recognition used restraints filter initial docking search rescoring filtered poses optimal scoring strategy provided success rate approximately test cases examined within top ranked poses compared approximately initial unrestrained docking developed docking protocol provides significant improvement initial unrestrained docking valuable predicting structures currently undetermined protein complexes well design peptides proteins target
assessment human body composition stimulated need understanding available methodologies estimating fat free mass percent body fat study found statistical significant changes body composition evaluated multi frequency bioelectrical analysis group athletes following creatine supplementation results consistent literature supplemented creatine effects osmolality cell membranes leads increased intracellular water retention multi frequency bia considered accurate sensitive method assessment human body composition
many siglecs function inhibitory receptors innate adaptive immune cells may contribute attenuation immune responses tumors siglec neutrophils siglec cells prominent examples inhibitory siglecs potentially dampen anti tumor immunity siglec may function adhesion molecule facilitator recognition internalization sialic acid decorated apoptotic bodies exosomes derived tumors potentially contribute attenuation well facilitation anti tumor immunity siglecs best studied tumor context animal models cancer modulators siglec function likely developed investigated clinically cancer context next years
open question cell biology general intracellular transport machinery adapted perform specialized functions polarized cells neurons illustrate adaptation elucidating role ubiquitous small gtpase ras related protein brain rab neuronal polarity show inactivation depletion rab rat hippocampal neurons abrogates somatodendritic polarity transferrin receptor several glutamate receptor types resulting appearance axon loss polarity caused primarily increased transport soma axon rather decreased retrieval axon soma retrieval also dependent rab effector fused toes fts hook fts hook interacting protein fhip fhf complex interacts minus end directed microtubule motor dynein activator dynactin drive population axonal retrograde carriers containing somatodendritic proteins toward soma findings emphasize importance biosynthetic sorting axonal retrieval polarized distribution somatodendritic receptors steady state
replication competent human adenovirus vector rabies virus glycoprotein gene inserted adrg onrab given direct instillation oral cavity representatives three wildlife vector species concern ontario red fox raccoon striped skunk variety non target wildlife species domestic laboratory species despite use relatively high dose vaccine untoward clinical signs observed subsequent vaccine exposure detection vaccine virus lung spleen intestine liver kidney brain animal attempted using onrab specific assay combining pcr southern blotting pcr tissue samples obtained vaccinates contact animals found pcr positive virus isolation attempts performed utilizing cell culture pcr positive tissues selection pcr negative tissues histological examination performed pcr positive tissues failed identify lesions attributed vaccine quantitative real time pcr used determine excretion vaccine feces oral cavity oral swabs fecal specimens found positive low rates recovery vaccine virus tissues feces oral cavity suggest likelihood onrab causing negative impact wildlife species unlikely crown copyright published elsevier ltd rights reserved
advancements adoptive cell transfer therapy act led use cells engineered tumor specific cell receptors rapid expansion obtained sufficient numbers treating patients however due massive proliferation cells close replicative senescence exhibit exhausted phenotype also display increased susceptibility activation induced cell death previously shown tumor reactive cells undergo caspase independent cell death upon tcr restimulation cognate antigen involves reactive oxygen species jun terminal kinase herein show large fraction human melanoma epitope tyrosinase reactive tcr transduced cells exhibit effector memory phenotype undergo programmed necrosis necroptosis upon tcr restimulation compared central memory subsets subset displayed increased expression genes involved necroptotic cell death necrotic phenotype upon tcr restimulation confirmed electron microscopy higher expression receptor interacting kinases ripk mediate necroptosis also observed fraction cells rescued undergoing necroptosis pretreated necroptotic inhibitor necrox tcr restimulation importantly necrox pretreated tumor reactive cells also exhibited better tumor control increased vivo persistence adoptively transferred treat subcutaneously established murine melanoma thus likely outcome act could vastly improved interfering necroptotic cell death pathway activated tumor reactive cells used immunotherapy
glazier graner hogeweg ggh model cellular automata framework representing time evolution cellular systems appealing unlike many individual cell based models dynamically simulates changes cell shape size proliferation seen implementation modelling framework without consensus literature behaviour best represented additionally majority published ggh model implementations feature proliferation order simulate certain biological situation mitosis important without analysis proliferation routines operate fundamental level method proliferation ggh model uses separate cell phenotypes differentiate cells entered left mitotic phase cell cycle presented demonstrated correctly predict logistic growth macroscopic scale accordance experimental evidence comparisons model simulations generalised logistic growth model provide interpretation latter shape parameter proliferation routine used shown offer modeller somewhat predictable control proliferation rate important ensuring temporal consistency different cellular behaviours model results found insensitive inclusion active cell motility implications simulated proliferation assays towards problems cell biology also discussed
genetics patellar luxation investigated pomeranian dogs presented small animal hospital faculty veterinary science chulalongkorn university cohort pomeranian dogs part four generation pedigree pomeranians screened present screened dogs bilateral unilateral luxation medial common lateral bidirectional risk similar male female dogs female male relative risk heritability screened population using threshold model genome wide association study cases controls using high density snp array indicated possible involvement chromosomal regions cfa cfa remained associated larger study involving additional cases controls candidate genes regions may involved pathogenesis pomeranian dogs elsevier ltd rights reserved
hepatocellular carcinoma hcc sixth common cancer world third leading cause cancer related death high rate diagnosis non curable stages lack novel active treatments make necessary review possible sources misleading results scenario incidence hcc shows clear geographical variation higher annual incidence asia africa western countries aimed review literature find different trends main activated molecular pathways hyperactivation ras raf mek erk pik akt mtor signalling epithelial mesenchymal transition emt process prevalent western population however fibroblast growth factor fgf transforming growth factor beta tgf beta notch pathways seems relevant asian population whether variations reflect distinct distribution known causes hcc proper ethnical differences remain elucidated nevertheless clearly different patterns relevant regional worldwide clinical trial design information neglected sponsors researchers rate failure hcc trials improve elsevier ireland ltd rights reserved
brown spiders venomous arthropods use venom predation defense humans bites animals provoke injuries including dermonecrosis gravitational spread lesions hematological abnormalities impaired renal function signs symptoms observed following brown spider bite called loxoscelism brown spider venom complex mixture toxins enriched low molecular mass proteins kda characterization venom confirmed presence three highly expressed protein classes phospholipases metalloproteases astacins insecticidal peptides knottins recently toxins low levels expression also found loxosceles venom serine proteases protease inhibitors serpins hyaluronidases allergen like toxins histamine releasing factors toxin belonging phospholipase family also known dermonecrotic toxin studied class brown spider toxins class toxins single handedly induce inflammatory response dermonecrosis hemolysis thrombocytopenia renal failure functional role hyaluronidase toxin spreading factor loxoscelism also demonstrated however biological characterization toxins remains unclear mechanism loxosceles toxins exert noxious effects yet fully elucidated aim review provide insight brown spider venom toxins toxicology including description historical data already available literature review article identification processes novel loxosceles toxins molecular biology proteomic approaches biological characterization structural description based ray crystallography putative biotechnological uses described along future perspectives field
aflatoxin detoxifizyme adtz gene derived armillariella tabescens cloned parotid gland specific expression vector ppspbgpneo construct parotid gland specific vector expressing adtz ppspbgpneo adtz transgenic mice generated microinjection identified using pcr southern blotting analysis pcr southern blotting analysis showed total six transgenic mice carried adtz gene generated pcr analysis indicated expression adtz mrna could detected parotid glands transgenic mice adtz activity saliva found feeding diet containing aflatoxin afb days effect adtz serum biochemical indexes afb residues serum liver mice evaluated results showed total protein globulin contents test treatment transgenic mice produced adtz significantly higher positive control alanine aminotransferase aspartate aminotransferase activity serum test treatment transgenic mice remarkably lower compared positive control moreover afb residues serum liver test treatment transgenic mice significantly lower compared positive control results study confirmed adtz produced transgenic mice could reduce even eliminate negative effects afb mice
owing mechanical properties metallic materials present promising solution field resorbable implants magnesium metabolism humans differs depending introduction natural oral administration magnesium via example food essentially leads intracellular enrichment contrast introducing magnesium rich substances implants tissue results different decomposition behavior exposing magnesium artificial body electrolytes resulted formation following products magnesium hydroxide magnesium oxide magnesium chloride well calcium magnesium apatites moreover assumed ions gaseous hydrogen also present result reaction magnesium aqueous environment aid physiological metabolic processes organism succeeds either excreting mentioned products integrating natural metabolic process burst release products considered problem multitude general tissue effects responses degradation products considered within review targeting specific implant classes furthermore common alloying elements magnesium hazardous potential vivo taken account wiley periodicals inc
aims trophoblast fusion placenta prerequisite successful pregnancy pathological conditions related presence syncytin sufficient explain complete event adam major player candidate via differential splicing adam gene produces short long form adam adam respectively methods results investigated localisation variants human placenta using whole mount situ hybridisation immunohistochemistry northern blotting trimester placentae case several cell lines northern blotting trimester placentae positive adam bewo hek jar leucocytes macrophages trimester placentae positive adam whole mount situ hybridisation trimester placental syncytium positive variants immunohistochemistry adam localised cytotrophoblast trimester placentae adam localised complete syncytium often including cytotrophoblast conclusion different localisation adam adam indicates possible different role making adam candidate fusion event syncytial localisation adam makes candidate cell cell cell matrix interactions placental syncytium maternal interface elsevier gmbh rights reserved
cbl novel synthetic cannabinoid detected scientists russian laboratories already added list scheduled drugs japan sweden germany unfortunately human metabolism data currently available makes challenging confirm intake especially given scs investigated thus far found extensively metabolized present study aims recommend appropriate marker metabolites investigating metabolism human hepatocytes confirm results authentic human urine specimens metabolic stability assay incubated human liver microsomes hlms metabolite profiling incubated human hepatocytes two authentic urine specimens positive cases subjected beta glucuronidase hydrolysis prior analysis identification metabolites hepatocyte samples urine specimens achieved high resolution mass spectrometry via information dependent acquisition quickly metabolized hlms min half life human hepatocyte incubation samples total metabolites identified generated mainly ester hydrolysis hydroxylation oxidative defluorination subsequent glucuronidation fluoro carboxyindole found major metabolite urine specimens parent drug detected predominant metabolite beta glucuronidase hydrolysis therefore based results study recommend suitable urinary marker metabolite confirming intake
quinclorac effective herbicide residue known major environmental pollutant therefore isolating quinclorac degrading bacteria exploring mechanisms degradation analyzing proteins introduced pollutant would scientific value practical importance used quinclorac degrading bacteria opportunistic pathogen broad substrate characteristic test strain used several techniques two dimensional electrophoresis gas chromatography mass spectrometry northern blotting study stress response strain upon environmental stress biodegradation quinclorac results showed strain secreted protective proteins sod heat shock protein taurine dioxygenase deal stress quinclorac expression proteins dsba gmet related bacterial pathogenesis decreased significantly exposed quinclorac could used indicate bacterial pathogenicity attenuated time quinclorac also induced expression phthalate dioxygenase reductase chlorocatechol dioxygenase key proteins participating degradation quinclorac proved northern blotting information gathered attempted define degradation pathway quinclorac elsevier ltd rights reserved
functional genomic screening rat enamel organ led identification number secreted proteins expressed maturation stage amelogenesis including amelotin amtn odontogenic ameloblast associated odam study characterise gene protein pattern expression related protein called secretory calcium binding phosphoprotein proline glutamine rich scpppq scpppq gene resides within secretory calcium binding phosphoprotein scpp cluster scpppq highly conserved residue secreted protein rich proline leucine glutamine phenylalanine silico data mining revealed correlation known sequences northern blotting various rat tissues suggests expression scpppq restricted tooth associated tissues immunohistochemical analyses show protein expressed late maturation stage amelogenesis junctional epithelium localises atypical basal lamina cell tooth interface discrete localisation suggests scpppq together amtn odam participates structuring basal lamina mediating attachment epithelia cells mineralised tooth surfaces
microscopic colitis refers chronic inflammation colon characterized histologic changes level radiologically endoscopically normal mucosa common cause chronic non bloody diarrhea occurs primarily older individuals however studies literature strong scientific evidence compared inflammatory bowel diseases ibd limits knowledge physicians pathologists article aims review information describing diagnostic methods drugs available treatment conducted search pubmed database capes portal using keywords microscopic colitis collagenous colitis lymphocytic colitis review selection articles published related topic based studies discussed review conclude relatively new gastrointestinal disorder studies incipient particularly respect pathophysiology immunology budesonide best documented short term treatment however studies needed elucidate best strategy treatment long term
objective aim study develop vitro biofilms sla titanium sla zirconium oxide zro surfaces evaluate effect antiseptic agents number putative periodontal pathogenic species methods vitro biofilm model developed sterile discs sla zro three antiseptic agents chlorhexidine cetyl pyridinium chloride chx cpc essential oils eeoos cetyl peridinium chloride cpc applied biofilms immersing discs min antiseptic solution either without mechanical disruption viable bacteria colony forming units cfu measured quantitative polymerase chain reaction qpcr combined propidium monoazide generalized lineal model constructed determine effect agents viable bacterial counts aggregatibacter actinomycetemcomitans porphyromonas gingivalis fusobacterium nucleatum surface results exposure antiseptic solution resulted statistically significant reductions number viable target species included vitro multi species biofilm sla zro orders actinomycetemcomitans gingivalis orders sla orders zro nucleatum orders significant differences found counts tested bacteria vitro biofilms formed sla zro topically exposure antimicrobial agents whether application purely chemical combined mechanical disruption significance actinomycetemcomitans gingivalis nucleatum responded similarly exposure antiseptics grown multispecies biofilms titanium zirconium surfaces spite described structural differences bacterial communities academy dental materials published elsevier ltd rights reserved
hiv infection occurs primarily mucosal transmission application biologically relevant mucosal models advance understanding functional properties antibodies mediate hiv protection thereby guiding antibody based vaccine development employed human vivo vaginal hiv infection model rhesus macaque vivo intrarectal shiv challenge model probe protective capacity monoclonal broadly neutralizing bnab non neutralizing abs nnabs functionally modified isotype switching human vaginal explants developed replication competent secreted nanoluc reporter virus system showed binding site bnabs igg igg iga isoforms potently blocked hiv csf hiv bal infection however igg iga nnabs either alone together inhibit infection despite presence fcr expressing effector cells tissue macaques igg iga isoforms infused high dose shiv challenge completely partially protective respectively nnabs igg miga non protective importantly mucosal models igg isotype bnabs protective iga isotypes attributable part greater neutralization activity igg variants findings underscore importance potent bnab induction primary goal hiv vaccine development authors published elsevier
nitric oxide center dot small radical mediates multiple important cellular functions mammals bacteria plants despite existence large number methods detecting center dot vivo vitro real time monitoring center dot single cell level challenging physiological pathological effects center dot determined actual concentration dwell time radical accordingly methods allow single cell detection center dot highly desirable recently expanded pallet center dot indicators introducing single fluorescent protein based genetically encoded nitric oxide center dot probes genops directly respond cellular center dot fluctuations hence addresses need demonstrate usage genops assess intracellular center dot signals response two different chemical center dot liberating molecules results also confirm freshly prepared hydroxy methyl nitrosohydrazino methyl propanamine noc much higher potential evoke change intracellular center dot levels compared inorganic center dot donor sodium nitroprusside snp furthermore dual color live cell imaging using green genops genop chemical indicator fura performed visualize tight regulation dependent center dot formation single endothelial cells representative experiments demonstrate genops suitable tools investigate real time generation degradation single cell center dot signals diverse experimental setups
mammalian nitric oxide synthase nos flavo hemoprotein tightly regulates nitric oxide synthesis thereby dual biological activities key signaling molecule vasodilatation neurotransmission low concentrations also defensive cytotoxin higher concentrations three nos isoforms inos enos nnos inducible endothelial neuronal nos achieve key biological functions tight regulation interdomain electron transfer iet process via interdomain interactions particular fmn heme iet essential coupling electron transfer reductase domain synthesis heme domain delivery electrons required activation catalytic heme site compelling evidence indicates calmodulin cam activates synthesis enos nnos conformational change domain shielded electron accepting input state new electron donating output state cam also required proper alignment domains three nos isoforms another exciting recent development nos enzymology discovery importance fmn domain motions modulating reactivity structure catalytic heme active site addition primary role controlling iet processes absence structure full length nos integrated approach spectroscopic pulsed epr mcd resonance raman rapid kinetics laser flash photolysis stopped low mutagenesis methods critical unravel molecular details interdomain fmn heme interactions investigate roles dynamic conformational changes fmn domain docking primary functional fmn heme domains regulating nos activity recent developments understanding mechanisms nos regulation driven combined approach focuses review improved understanding role interdomain fmn heme interaction cam binding may serve basis design new selective inhibitors nos isoforms elsevier rights reserved
aim present study produce marker free transgenic potato resistant pvy using construct generating self complementary hairpin rnas method two steps establishing robust protocol genetic transformation economically important cultivars potato using gfp nptii genes applying protocol transfer marker free hairpin construct analysis transgenic plants pcr first step internodes transformed agrobacterium tumefaciens lba construct kanamycin visual screening gfp pcr nptii gfp well pcr southern blotting gfp northern blotting nptii used transgenic plant selection good regeneration transformation efficiency obtained cvs baltica desiree cvs agave delikat showed lower figures second step tumefaciens construct scamv enhancer promoter two repeated inverted pvy sequences separated intron panos terminator used regenerated plants without selection analysed pcr using primers promoter promoter hairpin region repeated pvy sequences large number transgenic plants identified responsive baltica desiree agave none delikat simple two step strategy might applied generate marker free transgenic plants cvs plant species
beta glucosidases widely applied synthesis alkyl polyglucosides studies shown cassava beta glucosidase great synthesis ability study realized secretion cassava beta glucosidase gene mebgl pichia pastoris recombinant yeast expression vector ppicz alpha mebgl successfully constructed constructed plasmid linearized integrated pastoris strain electroporation positive clones selected ypdz plates cultured shake flask supernatant collected used alkyl polyglucoside synthesis synthesis reaction conducted conditions degrees water content conditions optimized results studies indicated aox promoter best one expression shake flask fermentation strain maximum hydrolysis activity optimal temperature degrees optimal pnp glc used substrate molecular mass recombinant monomer protein estimated kda recombinant protein showed high ability transfer glucose pnp glc hexyl alcohol high yields yields would substantially increase optimized recombinant cassava beta glucosidase expected promote industrialization process alkyl polyglucoside enzymatic synthesis
background loop shapes enzymology kinesin motors meet specific physiologic roles results dynamic equilibrium three conformations whose relative proportions shift atpase cycle conclusion interactions helix modulate kinetics microtubule binding significance combining transient kinetics time resolved fluorescence reveals important insights structural dynamics molecular motors members kinesin superfamily molecular motors differ several key structural domains probably allows molecular motors serve different physiologies required one variable stem loop motif referred loop longest mitotic kinesin previous structural studies shown assume different conformations different nucleotide states however enzymatic domains often consist mixture conformations whose distribution shifts response substrate binding product release information available static images structural studies provide addressed issue case attaching fluorescent probe examining fluorescence using steady state time resolved methods reveals assumes equilibrium mixture three orientations differ local environment segmental mobility combining studies transient state kinetics demonstrates major shift distribution transitions interconvert weak strong microtubule binding states finally conjunction previous cryo reconstructions egmicrotubule complexes fluorescence studies suggest model regulates nucleotide microtubule binding set reversible interactions helix propose features facilitate production sustained opposing force underlies role supporting formation bipolar spindle mitosis
red foxes vulpes vulpes indigenous mountains western united states high elevation specialists could face range reduction due climatic warming well potential encroachment loss adaptive alleles displacement introduced nonnative red foxes investigated genetic integrity native rocky mountain red fox macroura colorado analysis composition distribution patterns gene flow native nonnative red fox populations along elevational gradient study area spanned high plains around denver east alpine zone rocky mountains adjacent gunnison crested butte west used microsatellites mitochondrial dna mtdna colorado foxes along previously published reference data native western nonnative populations evaluate distribution native versus nonnative ancestry relationship elevation distance landscape type nonnative red fox ancestry predominated denver low lying areas whereas native ancestry prevalent high elevations genetic integrity foxes higher elevations within historical native range greater terms mtdna nuclear dna consistent higher male mediated gene flow nonnative admixture pronounced human altered landscapes findings provide baseline data necessary monitor future trends rocky mountain red fox populations highlight potential similar threats affect genetic integrity endangered montane red fox subspecies along pacific crest
using cell lines primary cells shown translation control plays key role regulating gene expression physiological pathological conditions relevance type regulation vivo tissues organs remains elucidated due lack efficient method polysome bound fractionation solid tissue rna samples simple efficient method described tissue samples pulverized liquid nitrogen lysed lysis buffer presence rnase inhibitors rnasin vanadyl ribonucleoside complex cell lysis cytoplasmic extract loaded sucrose gradients fractionated rna prepared fraction obtained rna reverse transcribed low efficiency problem overcome purifying polya rna aiming use small quantities solid tissue samples sample polya rna purification discarded different components individually screened negative effect reverse transcription polysaccharide heparin present nonspecific rnase inhibitor inhibits reverse transcriptase activity must removed rna samples efficient reaction heparin successfully removed precipitation rna lithium chloride demonstrated reversal inhibition pcr reactions summary present reliable method allowing prepare high quality polysome bound mrna small quantities liquid nitrogen frozen solid tissue samples human mouse origin amenable northern blotting pcr reactions expression profiling analyses
bone morphogenetic protein bmp participates significantly vascular development pathophysiological processes angiotensin angii demonstrated critical initiation progression atherosclerosis however effects angii bmp expression probucol angii induced bmp expression human umbilical vein endothelial cells huvecs unknown aim study investigate effects huvecs cultured stimulated various agents total superoxide dismutase sod activity concentrations malondialdehyde mda bmp measured standard methods northern blotting used detect expression bmp mrna activation kappa huvecs also determined angii treatment significantly increased bmp expression levels activated kappa effects suppressed treatment pyrrolidine dithiocarbamate pdtc probucol furthermore increased levels mda conditioned medium decrease total sod activity caused angii treatment reversed treatment probucol pdtc probucol downregulated angii nduced bmp expression effects probucol may mediated inhibition kappa activation
universal feature replication positive strand rna viruses association intracellular membranes carnation italian ringspot virus cirv replication plants occurs vesicles derived mitochondrial outer membrane product encoded cirv orf required targeting virus replication complex outer mitochondrial membrane plant yeast cells yeast saccharomyces cerevisiae used model host study effect cirv cell survival death shown promote cell death decreases cell growth rate addition changed nature acetic acid induced cell death yeast increasing number cells dying necrosis concomitant decrease number cells dying programmed cell death judged measurements phosphatidylserine externalization tight association membranes affected acetic acid treatment thus confirming peculiar independent interaction cirv mitochondria yeast work proved yeast invaluable model organism study mitochondrial determinants type cell death response stress molecular pathogenesis rna viruses elsevier ireland ltd rights reserved
cloning app genetic analysis families alzheimer disease reported much present work disease based upon foundations laid time progress smooth however many errors made memoir lay progress errors
microarray analysis initially performed screen differentially expressed genes nitrate ammonium fed rice oryza sativa leaves total genes shown unique expression response treatment genes function known involved signal transduction plant stress resistance transcriptional regulation basic metabolism northern blotting analysis confirmed expression pcs genes highly upregulated ammonium fed leaves compared expression nitrate fed leaves revealed ammonium fed leaves accumulated cysteine glutathione upregulated expressions pcs genes higher levels cysteine glutathione ammonium fed leaves indicate ammonium may able accelerate sulfur assimilation metabolism rice leaves unexpectedly northern blotting analysis showed expression two key enzymes sulfur assimilation pathway namely adenosine phosphosulfate reductase acetylserine thiol lyase upregulated ammonium treatment found total content free amino acids much higher ammonium fed leaves compared nitrate fed leaves mainly resulting increase several amino acids serine asparagine glutamine arginine increased amino acids particular serine central substrate synthesis thiol metabolites may promoted sulfur assimilation metabolism conditions ammonium nutrition
backgroundprevious studies found metformin provided renoprotection diabetic renal damage present study evaluated effects different doses metformin expression renal tissue nephrin type diabetes mellitus tdm model rats possible mechanism underlying protective effect kidney podocytes methodsa high fat diet combined low dose streptozotocin used induce tdm model rats diabetic rats treated metformin weeks end study urine blood samples collected measurement different indices light microscopy transmission electron microscopy used identify morphological changes renal expression nephrin protein assayed immunohistochemical staining whereas real time polymerase chain reaction used detect renal nephrin nphs mrna expression resultsmetformin treatment tdm rats produced dose dependent significant reductions urinary albumin nephrin concentrations glomerular basement membrane thickness gbmt foot process fusion rate fpfr compared control tdm model rats whereas renal expression nephrin protein nphs mrna dose dependently increased metformin treatment conclusionmetformin protects kidney podocytes tdm model rats dose dependently adjusting renal nephrin expression
background planorbid snail indoplanorbis exustus sole intermediate host schistosoma indicum species group trematode parasites responsible cattle schistosomiasis human cercarial dermatitis freshwater snail widely distributed southern asia ranging iran china eastwards including india southeastern himalayas southeast asia southwards veterinary medical importance snail explains interest understanding geographical distribution patterns evolutionary history study used large comprehensive sampling throughout indo malaya including specimens south india indonesia areas formerly less studied results phylogenetic inference revealed five highly divergent clades genetic distances among clades morphologically indistinguishable supporting assumption presumed nominal species may represent cryptic species complex species group may originated humid subtropical plains nepal southern adjacent regions early miocene major cladogenetic events leading fives clades occurred successively early miocene early pleistocene coinciding major periods monsoonal intensification associated major regional paleogeographic events miocene repeated climate changes due plio pleistocene climatic oscillations coverage indo australian archipelago iaa highlights presence single clade contrary expectations amova reveal population genetic structure among islands along widely recognised zoogeographical regional barrier suggesting recent colonisation independent natural biogeographical constraints neutrality tests mismatch distributions suggested sudden demographic spatial population expansion could occurred naturally pleistocene may possibly result modern colonisation triggered anthropogenic activities conclusions even though indoplanorbis main focus study findings may also important implications fully understanding role hosting digenetic trematodes existence cryptic species complex historical phylogeographical patterns recent range expansion iaa provide meaningful insights understanding monitoring parasites potential spread brings substantial contribution veterinary public health issues
iris yellow spot virus iysv emerging disease onion crops identified transmission electron microscopy enzyme linked immunosorbent assay reverse transcription polymerase chain reaction costa rica onion plants straw colored elongated lesions tip dieback costa rican iysv nucleocapsid partial sequences isolates grouped isolates north central america new zealand
understanding molecular basis schizophrenia essential disease management several molecular biology tools employed purpose mass spectrometry used mostly proteomic metabolomic studies one tool present first psychiatric study use mass spectrometry imaging msi desorption electrospray ionization desi preparation samples use desi msi remarkably simple quick preserves spatial distribution analytes using tool found differences phospholipid content schizophrenia postmortem brains results validate role phospholipids schizophrenia value tool furthering understanding molecular aspects disease elsevier rights reserved
electrochemical monitoring chip moc based approach rapid assessment human immunodeficiency virus hiv infection presence cocaine coc specific drugs namely tenofovir tef rimcazole demonstrated first time using electrochemical impedance spectroscopy eis vitro primary human astrocytes model developed using cultureware chip used moc hiv infection coc exposure treatment anti hiv drug tef coc antagonist charge transfer resistance value well varies respect infection treatment demonstrated highly responsive sensitivity developed chip results moc proof concept suggested hiv infection progression due coc ingestion therapeutic effects highly specific drugs measurable basis cell electrophysiology though work needs various molecular biology based optimizations promote technology analytical tool rapid assessment hiv infection patient manage hiv diseases timely diagnosis presented study based using cns cells efforts made perform method using peripheral cells monocytes derived dendritic cells elsevier rights reserved
enzymatic treatments gained recognition textile industry stereo specific nontoxic environment friendly energy conserving alternatives enzymes virtually applicable manufacturing steps textile chemical processing amylases textile desizing cellulases employed bio polishing denim washing proteases wool modifications important mention category however spite lot potentials enzymes limited industrial acceptance due extreme temperature conditions employed textile processing leading reduced properties action advances enzymology molecular biology provide possibilities new enzymes identification modifications existing enzymes well enzyme based processes suitable fit environment friendly option enzyme immobilization one approach stabilizes enzymes extends useful life improves action cases additionally recyclability reuse enzymes make process even economical review summarizes potential research involved development enzymatic processing textile chemical processing paper highlights significance limitations native enzymes well immobilized enzymes applications textile chemical industry elsevier ltd rights reserved
spinal cord injury sci devastating condition effective treatments resveratrol polyphenolic compound exhibited neuroprotective effects many neurodegenerative diseases however explicit effect mechanism resveratrol sci still unclear adenosine monophosphate activated protein kinase ampk sirtuin sirt downstream protein play key roles metabolizing energy resisting resistance cellular protein homeostasis study determined effects resveratrol sci potential relationship sirt ampk signaling pathway autophagy apoptosis determine effect resveratrol sci recovery spinal cord contusion model employed rats received treatment resveratrol dmso immediately following contusion determined basso beattie bresnahan bbb scores significantly higher injured rats treated resveratrol nissl staining revealed resveratrol treatment significantly reduced loss motor neurons lesion size spinal cord injured rats compared vehicle treated animals spinal cord tissue assessed western blot reverse transcription polymerase chain reaction pcr immunohistochemical analyses days injury changes expression sirt ampk signaling pathway autophagy apoptosis proteins expression sirt ampk beclin bcl elevated resveratrol treated animals whereas expression cleaved caspase caspase bcl associated protein bax inhibited immunofluorescence analysis primary neurons treated resveratrol alone combination compound ampk inhibitor sirt inhibitor revealed treatment inhibitors blocks increased expression cells increases portion tunel positive cells taken together results suggest resveratrol exerts neuroprotective effects sci regulating autophagy apoptosis mediated sirt ampk signaling pathway ibro published elsevier ltd rights reserved
detection acinetobacter genospecies isolates oxa type carbapenemases resulting reduced susceptibility carbapenem antibiotics increasingly reported identified acinetobacter genospecies isolate carrying gene oxa aimed resolve genetic environment surrounding bla oxa gene species identification confirmed rrna restriction analysis mics imipenem meropenem ertapenem determined isolate screened pcr bla oxa like bla oxa like bla oxa like bla oxa like genes sequence surrounding bla oxa determined amplification inverse pcr genome walking followed sequencing genetic localization investigated southern blotting isolate confirmed belonging acinetobacter genospecies reduced susceptibility carbapenems isolate found encode two bla oxa genes may duplicated insertion sequence isaba two copies inserted isaba elements bla oxa genes appear plasmid borne first report beta lactamase duplication acinetobacter genospecies gene duplication mediated isaba
aim investigate content serum microrna mir role screening retinal endothelial injury early diagnosis proliferative diabetic retinopathy methods study included serum samples samples healthy individuals samples diabetes mellitus patients without diabetic retinopathy ndr non proliferative diabetic retinopathy npdr patients samples proliferative diabetic retinopathy pdr patients expression mir evaluated using real time quantitative polymerase chain reaction results serum content mir declined damage degree retina significant difference two retinopathy groups receiver operating characteristic curve roc analyses indicated serum mir significant diagnostic value pdr yielded area curve auc roc sensitivity specificity discriminating pdr healthy controls auc roc sensitivity specificity discriminating ndr npdr healthy controls diagnostic threshold greater equal increase possibility npdr content mir less equal possibility occurrence pdr increased conclusion serum mir serve non invasive biomarker screening retinal endothelial injury early diagnosis pdr
acacias mimosoideae represent major woody group arid subarid habitats tropical subtropical regions genetic diversity population dynamic african species still poorly investigated particular due ploidy variation among within species aim investigate diversity plastid genome plastome central saharan mimosoids order assess potential utility phylogenetic population genetic analyses first used genome skimming strategy assemble complete plastome plus nuclear ribosomal dna cluster six species belonging three genera vachellia senegalia faidherbia phylogenetic relationships based data confirm existence three main evolutionary lineages hoggar range southern algeria analysis plastome structure reveals extension inverted repeat faidherbia albida recently reported two genera lineage inga acacia higher substitution rates detected lineage species sampling allows revealing genes particularly accd clpp rps rps ycf ycf ycf positive selection following extension reasons evolutionary transition need unraveled develop plastid microsatellites used large panel mimosoid species local scale loci reveal intra specific polymorphism least one species markers may useful assess genetic diversity plastome comparative phylogeographies population genetic studies
asthma condition consistently demonstrated significant health outcome inequalities minority populations one approach used care patients asthma incorporation technology behavioral modification symptom monitoring education treatment decision making whether technological interventions improve care black inner city patients unknown reviewed randomized controlled trial technological interventions performed minority populations total articles met inclusion exclusion criteria performed childhood adolescent age group interventions used mpeg audio layer players text messaging computer web based systems video games interactive voice response many used tailored content specific behavior theory although interventions based technology required additional special staffing subject user satisfaction positive improvements noted asthma knowledge medication adherence asthma symptoms quality life unfortunately health care utilization emergency department visits hospitalizations typically improved interventions although single intervention modality vastly superior computer based interventions appeared positive results summary technology based interventions high level user satisfaction among minority urban low income individuals asthma improve asthma outcomes large scale studies needed assess whether interventions decrease health disparities asthma american academy allergy asthma immunology
introduction farnesoid receptor fxr belongs group nuclear receptors nrs regulate expression various genes binding dna either monomer heterodimer retinoid receptor areas covered fxr affects several metabolic pathways specific target genes regulating bile acid synthesis homeostasis glucose lipid metabolism also exhibiting crucial role intestinal bacterial growth liver regeneration additionally fxr involved pathogenesis different cholestatic diseases well non alcoholic fatty liver disease inflammatory bowel disease ibd primary idiopathic malabsorption expert opinion analyses certain fxr polymorphisms revealed associations clinical phenotypes susceptibility various human diseases fxr single nucleotide polymorphisms seem correlated differences glucose homeostasis gallstone formation intrahepatic cholestasis pregnancy ibd therapeutic response hypolipidemic therapy among studied populations unfortunately little data still available studies remain done determine contribution fxr polymorphisms estimating risk factors clinical outcomes several diseases
determining correct enzymatic activity putative glycosyltransferases gts challenging enzymes utilize multiple donor acceptor substrates upon initial determination donor sugar nucleotide utilizes various acceptor molecules tested describe quick method screen sugar nucleotide donor specificities gts utilizing sensitive nonradioactive commercially available bioluminescent uridine diphosphate detection kit vitro method allowed validate sugar nucleotide donor substrate specificities recombinantly expressed human bovine bacterial protozoan gts approach less time consuming many traditional assays utilize radiolabeled sugars chromatographic separations facilitate discovery novel gts participate diverse biological processes
interaction ligand macromolecule modeled following different theories tenants induced fit model consider upon ligand binding protein ligand complex undergoes conformational change contrast allosteric model assumes one among different coexisting conformers given protein suitable bind ligand optimally present paper propose general framework model binding ligands macromolecule framework built binding polynomial allows opening new ways teach unified manner ligand binding enzymology receptor binding pharmacology moreover developed simple software allows building binding polynomial schematic description biological system study taking calmodulin canonical example show proposed tool allows easy retrieval previously experimental computational reports article part special issue entitled calcium signaling health disease guest editors geert bultynck jacques haiech claus heizmann joachim krebs marc moreau published elsevier
identify novel regulatory factor involved brain development synaptic plasticity applied differential display pcr method mrna samples nmda stimulated stimulated neocortical cultures among cdna clones isolated eight clones novel genes one encodes novel zinc finger protein hit amino acid residues kda length contains seven zinc finger motifs rat hit cdna exhibits strong homology human znf amino acid identity homology identity rat znf carboxyl region furthermore genomic alignment hit cdna indicates alternative use distinct promoters exons produces hit znf mrnas northern blotting revealed hit mrna similar expressed various tissues lung heart liver enriched brain znf mrna similar found testis evaluate biological roles hit znf targeted mutagenesis gene performed mice homozygous mutation embryonic lethal ceasing embryonic organization cardiogenesis embryonic day heterozygous mice able survive showing cell degeneration vacuolization striatum cingulate cortex surrounding white matter results reveal novel biological pathological roles hit brain development maintenance
rapid resolution liquid chromatography tandem mass spectrometry analysis applied human urine samples discover new molecular biomarkers alteration psychophysical well due environmental physiological confinement stress conditions achieved mars project urine samples crew members submitted metabolomic studies means separative techniques coupled mass spectrometric techniques data analysis metabolite features found comparison metabolites identified every differential analysis significant modifications eight metabolites shared subjects study
various species amoebas belonging genus acanthamoeba widely distributed many parts world strains protozoans may exist parasites pose risks human health causative agents serious human diseases currently china lack information distribution acanthamoeba strains environment accordingly environmental water samples taken rivers sewage pharmaceutical factory drains collected qinghai province china material filtered analysed lamp pcr assays samples examined acanthamoeba dna found samples use lamp samples dna amoeba also detected using pcr sequencing selected positive samples confirmed pcr products fragments acanthamoeba rrna gene isolates represent genotype known common strain related cases results indicate surface water well water taken sewage pharmaceutical drains may source acanthamoebic strains potentially pathogenic humans china also demonstrated lamp assays sensitive pcr regarded useful tool screening environment acanthamoeba spp elsevier rights reserved
printing shown promise neural regeneration providing customized nerve scaffolds structurally support bridge defect gap well deliver cells various bioactive substances low level light therapy lllt exhibits positive effects rehabiliation degenerative nerves neural disorders mind postulate printed neural scaffold coupling lllt generate new strategy repair neural degeneration achieve goal applied red laser light stimualte neural stem cells printed scaffolds investigated subsequent cell response respect cell proliferation differentiation show cell prolifeartion rate intracellular reactive oxgen species synthesis significantly increased laser stimulation follwed culture culturing time vitro laser stimulation promoted neuronal differentiation neural stem cells glial differentiation suppressed based results immunocytochemistry studies real time quantitative reverse transcription polymerase chain reaction testing findings suggest integration printing lllt might provide powerful methodology neural tissue engineering
matrix metalloproteinases mmps degrade collagen mediate tissue remodeling novel cytokine expressed various inflammatory conditions modulates mmp expression investigated effect mmp expression primary human cardiac fibroblasts hcf delineated signaling pathways involved hcf treated recombinant human mmp expression analyzed northern blotting quantitative pcr western blotting elisa transcriptional induction transcription factor binding emsa elisa reporter assay mapk erk activation protein kinase assays western blotting signal transduction pathways investigated using pharmacological inhibitors small interfering rna sirna adenoviral dominant negative expression vectors stimulated mmp gene transcription net mrna levels protein promoter reporter activity hcf response blocked receptor chimera receptor antibodies tnf alpha beta antibodies stimulated type collagenase activity inhibited mmp inhibitor sirna mediated mmp knockdown stimulated activator protein fos jun fra kappa ccaat enhancer binding protein ebp beta dna binding reporter gene activities effects attenuated antisense oligonucleotides sirna mediated knockdown expression dominant negative signaling proteins inhibition kappa ebp activation attenuated stimulated mmp expression induced mapk erk activation inhibition blunted mediated transcription factor activation mmp expression data indicate induces mmp human cardiac fibroblasts directly via mapk erk dependent kappa ebp beta activation suggest may play critical role myocardial remodeling
plp well regarded role coenzyme number diverse enzymatic reactions transamination deoxygenation aldol reactions mediated plp dependent enzymes enliven enrich deoxy sugar biosynthesis endowing compounds unique structures contributing roles determinants biological activity many natural products importance deoxy aminosugars natural product biosynthesis spurred several recent structural investigations sugar aminotransferases structure pmp dependent enzyme catalyzing deoxygenation reaction biosynthesis ascarylose also determined studies crystal structures provided offer wealth new insights regarding enzymology plp pmp dependent enzymes deoxy sugar biosynthesis review consider recent achievements structural biology deoxy sugar biosynthetic enzymes important implications hold understanding enzyme catalysis natural product biosynthesis general article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
background lack early diagnosis progression markers effective pharmacological treatment dramatic unfavourable effects clinical outcomes patients peripheral artery disease pad addressing issues require dissecting molecular mechanisms underlying disease sought characterize notch signaling atherosclerosis relevant markers lesions femoral arteries symptomatic pad patients methods plaque material common femoral superficial femoral popliteal arteries patients removed directional atherectomy rna obtained samples analysed quantitative reverse transcriptase polymerase chain reaction qrt pcr results detected expression notch ligands delta like dll jagged jag notch target genes hes hey hey heyl markers plaque inflammation stability vascular cell adhesion molecule vcam smooth muscle cyclooxygenase cox bcl mirnas found inflamed plaque gene expression profile characterized high dll associated medium high cox vcam hes mir mira mir mir low jag bcl hey heyl mira patients stable plaque profile characterized high jag associated medium high hey heyl bcl mira low dll cox vcam mir mira mir mir patients remaining patients showed plaque profile intermediate characteristics conclusions study reveals existence gene signature associated notch activation specific ligands could predictive pad progression
background porphyromonas gingivalis capsule enables evasion phagocytosis invasion keratinocytes bacterial survival mixed infection capsule also participates coaggregation may lead characteristic virulence present monoinfection aim study evaluate role capsule virulence factor coaggregated mixed infection fusobacterium nucleatum methods mixed infections containing non capsulated capsulated strains compared infection lactose coaggregation inhibitor murine experimental periodontitis used assess disease severity primary polymorphonuclear leukocytes keratinocytes used examine phagocytosis bacterial invasion respectively results mixed infection capsulated augmented alveolar bone loss compared mixed infection non capsulated addition lactose led attenuation bone loss capsulated mixed infection intensification bone loss non capsulated mixed infection latter mixed infection evaded phagocytosis whereas capsulated mixed infection displayed greater capacity invasion keratinocytes conclusions capsule found serve unique virulence factor mixed infection capsule dependent coaggregation led augmented invasion may responsible severity disease mixed infection
cytochrome enzyme cypa thought play major part human metabolism clozapine nefazodone potent specific vivo inhibitor cypa administered nefazodone clozapine six patients found mean clozapine levels rose baseline norclozapine levels based observations inferred inhibition cypa vivo minimal effects clozapine metabolism nefazodone appears safe administered vith clozapine int clin psychopharmacol lippincott williams wilkins
stem cells one key components tissue engineering tissue repair regeneration however studies necessary order provide suitable microenvironment stem cells differentiate thereby regenerate tissues carbon based nanomaterials carbon nanotubes cnts graphene recently attracted much significant attention tools investigating controlling stem cell biology fate due remarkable characteristics including unique mechanical properties tunable surface chemistry high electrical conductivity review paper describe applications cnts graphene stem cell differentiation consequently tissue formation vitro vivo conditions cytotoxicity cnts graphene also addressed finally discuss potential challenges future directions applications cnts graphene stem cell culture differentiation
substrate cycles also known futile cycles cyclic metabolic routes dissipate energy hydrolysing cofactors atp first described occur muscles bumblebees brown adipose tissue popular example conversion fructose phosphate fructose bisphosphate back present study analyze large number substrate cycles human metabolism consume atp discuss statistics purpose use two recently published methods efmevolver shortest efm method calculate samples substrate cycles respectively find unexpectedly high number substrate cycles human metabolism reactions per cycle utilizing reactions six different compartments analysis tissue specific models liver brain metabolism shows selective pressure acts uncontrolled dissipation energy avoiding coexpression enzymes belonging substrate cycle selective force particularly strong futile cycles high flux result thermodynamic principles
aberrant regulation wnt signaling common theme seen across many tumor types decades research unraveled epigenetic genetic alterations result elevated wnt pathway activity recently become apparent wnt signaling levels identify stem like tumor cells responsible fueling tumor growth therapeutic targeting tumor stem cells intense area investigation concise understanding wnt activity relates cancer stem cell traits needed review attempts summarizing intricacies wnt signaling cancer stem cell biology special emphasis colorectal cancer
improvement cultivar resistance key strategy control host specialized pathogen verticillium longisporum oilseed rape osr special feature pathogen systemic non homogenous delayed colonization plant xylem resulting extended symptomless period latency result severity infection field difficult score becomes apparent crop maturity stages may confused natural senescence assessment verticillium disease severity osr visual scoring microsclerotia harvested stubbles unsatisfactorily reflects genotypic resistance strongly affected ripening stage plant overcome limitations developed qpcr method unambiguously differentiates levels quantitative resistance longisporum osr genotypes field conditions specificity sensitivity two primer pairs targeting tubulin loci longisporum genome tested tubulin primers showed high specificity longisporum isolates primers exhibited significantly higher sensitivity detecting fungal dna stem tissue limit quantification dna field grown pre symptomatic plants best discrimination resistant susceptible osr cultivars based fungal dna analysis stem tissue achieved growth stage transition fungal vascular growth viable plants saprotrophic colonization senescent stem tissues field screening data obtained qpcr growth stage confirmed results greenhouse testing thus corroborating relevance reliability seedling assays determining cultivar responses longisporum field useful tool breeders first selection elite osr genotypes improved resistance verticillium
several clinical trials demonstrated patients chronic myeloid leukemia chronic phase cml achieve sustained deep molecular responses tyrosine kinase inhibitor tki therapy safely suspend therapy attempt treatment free remission tfr many tfr studies date enrolled imatinib treated patients however feasibility tfr following nilotinib dasatinib also demonstrated review discuss available data tfr trials data reveal molecular biology tfr increasing number ongoing tfr clinical trials tfr may become achievable goal patients cml
traditional chinese medicinal plant isodon remarkably rich pharmacologically active ent kaurane diterpenoids diverse carbon skeletons effort create resource gene discovery elucidate biosynthesis isodon ent kaurane diterpenoids three cdnas named iecps iecps iecpsa isolated putatively encoding copalyl diphosphate synthases isodon eriocalyx leaves recombinant proteins iecps iecps expressed respectively escherichia coli shown specifically convert geranylgeranyl diphosphate copalyl diphosphate demonstrated analyses based tissue specific expression metabolic localization studies iecps transcripts detected young mature leaves dominant ent kaurane diterpenoid maoecrystal accumulates whereas detectable expression iecps observed germinating seeds gibberellin biosynthetic pathway usually active addition evidence maoecrystal found germinating seeds hand iecps transcripts significantly accumulated germinating seeds well leaves biochemical molecular genetic evidence thus indicated lecps copalyl diphosphate synthase potentially involved biosynthesis isodon diterpenoids leaves iecps probably relevant gibberellin formation may addition participate isodon ent kaurane diterpenoid production elsevier ltd rights reserved
basic helix loop helix pas domain proteins form growing family transcription factors proteins involved process adaptation cellular stresses environmental factors change oxygen concentration describe identification characterization recently cloned pas domain protein termed npas ischemic rat brain using gene expression profiling following middle cerebral artery occlusion showed npas mrna differentially expressed ischemic tissue full length gene cloned rat brain spatial temporal expression characterized situ hybridization northern blotting npas mrna specifically expressed brain highly regulated ischemic tissues following focal global cerebral ischemic insults immunohistochemistry revealed strong expression limbic system thalamus well layers cortex unchallenged brain overexpressed hek cells npas appears protein similar kda brain samples however addition kda band specific kda immunoreactive band also detected ischemic challenge lead decrease kda form simultaneous increase kda immunoreactivity could indicate novel regulatory mechanism activation deactivation protein response ischemic brain injury
histomonas meleagridis protozoan parasite infect gallinaceous birds affects mainly liver caeca infected birds consequence recent ban chemotherapeuticals europe usa histomonosis gained somewhat attention due emergence fact effective treatment available therefore special attention also given towards diagnosis control disease actual study report development highly specific sensitive real time pcr methods detection quantification parasite based two protein coding genes hydrogenase fehyd rpb genes seem single copy meleagridis shown southern blotting absolute quantification using real time pcrs samples containing known amount parasite real time pcr assays based fehyd rpbl genes found efficient method quantification detection meleagridis vitro grown cultures tissues infected birds faecal samples real time pcrs able detect single cell vitro cultures meleagridis fecal samples spiked meleagridis finally qpcr assays shown highly specific meleagridis samples containing either two meleagridis genotypes positive whereas samples containing protozoa tetratrichomonas gallinarum trichomonas gallinae simplicimonas tritrichomonas parahistomonas wenrichi dientamoebidae blastocystis negative elsevier rights reserved
recent outbreak ebola virus disease west africa led deaths peak mortality august december meeting convened world health organization september concluded urgent unmet need exists efficacy safety testing ebola virus vaccine candidates clinical trials expedited vaccines could used outbreak setting provide long term protection populations risk sporadic outbreaks number vaccines evaluated phase trials two advanced first generation ebola vaccine candidates live replicating vesicular stomatitis virus rvsv replication defective chimpanzee adenovirus chad review focuses two vaccines clinical development discusses future opportunities challenges faced licensure deployment ebola virus vaccines crown copyright published elsevier inc rights reserved
diagnostic statistical manual mental disorders fifth edition dsm proposes alternative model personality disorders includes maladaptive level personality traits traits operationalized personality inventory dsm pid although extensive research genetic environmental influences normative level personality heritability dsm traits remains understudied present study addresses gap literature assessing traits indexed pid international personality item pool neo ipip neo adult twins individuals research aims include replicating past findings heritability normative level personality measured ipip neo benchmark studying maladaptive level traits ascertaining univariate heritability estimates maladaptive level traits measured pid establishing much variation personality pathology attributed genetic components affecting variation normative level personality determining residual variance personality pathology domains variance attributable genetic environmental components general personality removed results revealed pid traits reflect similar levels heritability ipip neo traits maladaptive normative level traits correlate phenotypic level also correlate genotypic level indicating overlapping genetic components contribute variance nevertheless also found evidence genetic environmental components unique maladaptive level personality traits shared normative level traits
objectives whether immunologically treat epilepsy patients suggested autoantibody negative limbic encephalitis clinically challenging therefore evaluated clinical outcome eventual outcome predictors immunotherapy group negative patients recent onset temporal lobe epilepsy tle magnetic resonance imaging mri indicators subjective cognitive decline psychiatric symptoms methods retrospective observational uncontrolled study monitored tle patients suggested negative along methylprednisolone immunotherapy results patients seizures amygdala hippocampal enlargement subjective cognitive decline behavioral problems eighty six percent impaired executive memory functions depressed antiepileptic drugs pulse therapy started median follow months patients seizure free months showed mri improvements amygdala hippocampal volume reduction cognition improved worsened mood improved deteriorated immunotherapy discontinued clinical changes correlate outcomes could predicted conclusion immunological treatment suggested negative showed reasonable seizure control mri cognitive improvements treatment success predictable clinical features definitely attributable immunological treatment lacking biomarkers reliable diagnosis negative suggest presence mild manifestations initiating antiepileptic drug therapy negative dynamics mri seizures cognition behavior documented immunosuppressive treatment initiated
self consistent charge density functional tight binding scc dftb promising method hybrid quantum mechanics molecular mechanics simulations enzyme catalyzed reactions acylation reaction fatty acid amide hydrolase faah promising drug target investigated applying scc dftb charmm scheme calculated potential energy barriers resulted reasonable agreement experiments oleamide oleoylmethyl ester ome substrates outperforming previous calculations performed charmm level furthermore experimental preference faah hydrolyzing faster ome adequately reproduced calculations findings indicate scc dftb charmm approach successfully applied mechanistic investigations faah catalyzed reactions
introduction disseminated cancers remain fatal despite availability variety conventional novel treatments including surgery chemotherapy radiotherapy immunotherapy biologically targeted therapy major factor responsible failure chemotherapy treatment cancer development multidrug resistance mdr overexpression various abc transporters cancer cells efficiently remove anticancer drug cell thus causing drug lose effect areas covered review summarised ongoing research related mechanism function regulation abc transporters integrated current knowledge different levels molecular biology clinical trials also discussed potential therapeutic strategies targeting abc transporters reverse mdr cancer cells expert opinion involvement various abc transporters cancer mdr lays foundation developing tailored therapies overcome mdr ideal mdr reversal agent broad spectrum abc transporter inhibitory activity potent good pharmacokinetics trans stimulation effects low toxicity alternatively nanotechnology based drug delivery systems containing cytotoxic drug reversing agent may represent useful approach reversing mdr minimal target toxicity
review attempts put together sequential pathogenesis vhl mutant metastatic ccrcc links driver pathways epigenetics biochemistry immune evasion translational perspective reflect gap understanding molecular pathogenesis currently accepted standard care metastatic rcc present ideas bridge gap better translational research clear cell renal cell carcinoma ccrcc accounts rcc biallelic von hippel lindau vhl gene defects occur sporadic ccrcc etiopathogenesis vhl mutant metastatic rcc based understanding date molecular mechanisms involved sequence events grouped following loss vhl activity germline somatic mutation inactivation wild type copy constitutive activation hypoxia inducible factor hif pathway due loss vhl activity transcription genes involved angiogenesis epithelial mesenchymal transition invasion metastasis survival anaerobic glycolysis pentose phosphate pathway iii interactions hif pathway oncogenic pathways genome wide epigenetic changes potentially driven overactive hif pathway influence epigenetics various oncogenic apoptotic cell cycle regulatory mismatch repair pathways inhibition multiple tumor suppressor genes immune evasion least partially caused changes epigenome mechanisms interact throughout pathogenesis progression disease also confer chemoresistance radioresistance making one difficult metastatic cancers treat article puts together sequential pathogenesis vhl mutant ccrcc elaborating mechanisms interplay oncogenic pathways epigenetics metabolism immune evasion perspective potential therapeutic strategies reflect huge gap understanding molecular biology currently accepted standard care metastatic ccrcc present ideas better translational research involving therapeutic strategies combinatorial drug approach targeting different aspects pathogenesis
make direct readout loop mediated isothermal amplification lamp simpler reliable enhance visual sensitivy lamp detection developed facile cascade signal colorimetric dnazyme lamp dlamp sensor integrates amplification power lamp inherent catalytic activity dnazyme simple ultrasensitive analysis targets first signal inner primer dnazyme complementary sequence signal precursor middle insertable region asymmetrically designed next amplification colorimetric reaction presence target dna target specifically initiated lamp signal precursor amplified larger number dnazyme sequences target dna amplification addition hemin free dnazyme fragments released ultrasonication ppna formed quadruplex hemin conjugates act signal readouts direct colorimetric assay even less genomic dna detected using established one step cascade signal amplification strategy without need gels apparatus moreover novel colorimetric strategy showed high fidelity dna detection visual sensitivity lamp method may pave way point care detection pcr based colorimetric analyses elsevier rights reserved
several molecular methods southern blotting hybridization multilocus sequence typing dna microsatellite analysis employed genotype candida albicans genotype analysis allows group strains clades group composed one ancestor descendants genotype studies demonstrate clades distribution influenced geographic area well antifungal resistance associated particular clades findings suggested albicans reproduces mainly clonal manner certain degree dna microevolution additionally virulence factors site isolation also associated clade specificity present article brief review methods used candida genotyping correlated clade systems established special emphasis given hybridization mlst microsatellites present work also focused phenotypic physiological traits associated candida clades
previous studies demonstrated sodium glucose cotransporter sglt induced remnant ileum total colectomized rats via action factors hyperaldosteronism aim present study clarify whether fecal stream required enhancement sglt mediated sodium transport twenty seven pairs ileal tissues obtained proximal distal side respectively loop ileostomy total proctocolectomy mucosae mounted ussing chamber evaluate glucose coupled sodium transport levels sglt mrna proximal distal mucosae compared northern blotting villous height crypt depth measured test correlations mucosal structure sglt mediated sodium transport mrna expression levels glucose coupled sodium transport expression sglt mrna significantly lower distal mucosae relative proximal mucosae distal mucosae villous height crypt depth significantly lower proximal mucosae demonstrating positive correlation villous height sglt function expression comparative studies proximal distal mucosae demonstrated addition hormonal changes fecal stream required full induction sodium transport system includes sglt mediated transport remnant ileum following total proctocolectomy
alpha linolenic acid alpha lna essential human diet probably substrate synthesis longer chain unsaturated fatty acids principally epa dha confer important biophysical properties cell membranes required tissue function extent molecular transformation occurs man controversial present paper reviews recent literature metabolism alpha lna man including use dietary alpha lna beta oxidation recycling carbon fatty acid synthesis novo conversion longer chain pufa sex differences alpha lna metabolism possible biological consequences discussed increased consumption epa dha fish oil number well characterised beneficial effects health present paper also reviews efficacy increased alpha lna consumption increasing concentrations epa dha blood cell lipid pools extent dietary interventions might protective cvd inflammation although effects cvd risk factors inflammatory markers variable beneficial effects reported weaker achieved increasing consumption epa dha linoleic acid overall limited capacity conversion longer chain fatty acids lack efficacy ameliorating cvd risk factors inflammatory markers man suggests increased consumption alpha lna may little benefit altering epa dha status improving health outcomes compared dietary interventions
angiotensin critical pre eclampsia pathogenesis addition microrna regulates angiotensin type receptor expression explored function microrna pre eclamptic pregnant women human umbilical vein endothelial cells isolated cultured healthy puerperant women pre eclampsia patients cells transfected mature microrna plasmid effect microrna assessed northern blotting situ hybridization quantitative real time pcr immunofluorescent staining western blotting addition activation extracellular signal regulated kinase assessed immunoprecipitation western blotting severely pre eclamptic pregnant women expressed less mature mir compared healthy pregnant women addition angiotensin type receptor expression decreased substantially healthy cells mir transfected cells compared mir mutant transfected cells cells pre eclamptic patients mature mir reduced angiotensin induced extracellular signal regulated kinase activation conclusion endogenous mature mir expression may important contributor pathogenesis severe pre eclampsia
human cytotoxic lymphocytes ctls known play important role tumor control order carry function cell surface expressed cell receptor tcr must functionally recognize human leukocyte antigen hla restricted tumor derived peptides phla however others shown tcrs bind sub optimally tumor antigens uncovering molecular mechanisms define poor recognition could aid development new targeted therapies circumnavigate shortcomings indeed present therapies lack molecular understanding universally effective describe methods commonly employ laboratory determine nature interaction tcrs phla governs cell functionality methods include generation soluble tcrs phla use reagents ray crystallography biophysical analysis antigen specific cell staining phla multimers using approaches guided structural analysis possible modify interaction tcrs phla test modifications impact cell antigen recognition findings already helped clarify mechanism cell recognition number cancer antigens could direct development altered peptides modified tcrs new cancer therapies
diffuse intrinsic pontine glioma dipg malignant brain tumor childhood carries extremely poor prognosis similar new cases diagnosed year little progress made changing prognosis outcome tumor since first documented literature median overall survival months overall survival rate year less years review provide background information dipgs historical look trends caring dipg current trends diagnosis treatment changing way care terminal tumors work towards better understanding underlying molecular biology attempt develop better chemotherapeutic tools combat disease
objectives aim study assess effect nutritional supplementation lipid based nutrient supplements lns corn soy blend flour bifidobacterium staphylococcus aureus gut microbiota composition malawian infants addition microbiota changes time characterized study infants methods healthy month old malawian infants randomly assigned intervention schemes month period infants control group provided supplementary food infants groups received either micronutrient fortified corn soy blend micronutrient fortified lns milk protein base micronutrient fortified lns soy protein base months age fecal bifidobacteria aureus gut microbiota months age analyzed quantitative real time polymerase chain reaction method results difference change bacterial prevalence counts intervention groups month study period looking total study population higher counts total bacteria bifidobacterium genus catenulatum lower counts infantis lactis longum aureus detected children stools months rather months age conclusions dietary supplementation effect bifidobacterium aureus microbiota composition study infants fecal bifidobacterial diversity infants however changed toward adult like microbiota profile within observed time
prokaryote secreted proteins transported cell surface using either general secretion sec twin arginine translocation tat pathway majority secreted proteins anchored cell surface remainder released extracellular environment anchored surface proteins play variety important roles cellular processes ranging facilitating interactions cells maintaining cell stability extensively studied layer glycoprotein slg haloferax volcanii previously thought anchored via terminal intercalation membrane recently shown lipidated terminal segment removed processes dependent upon archaeosortase arta recently discovered enzyme slg sec substrate silico analyses presented reveal eight additional arta substrates predicted two substrates also contain predicted tat signal peptides including hvo highly conserved tripartite structure lies closer center protein terminus unlike predicted arta substrates identified date demonstrate even given atypical location tripartite structure likely resulted fusion genes encoding arta substrate cytoplasmic protein processed arta dependent manner using hvo mutant lacking conserved twin arginines predicted tat signal peptide show hvo indeed tat substrate arta substrates include sec tat substrates finally confirmed tat dependent localization signal peptidase spase cleavage site hvo using mass spectrometry importance specific mechanisms facilitate protein anchoring archaeal cell surface remain poorly understood shown proteins bound cell surface model archaeon volcanii recently discovered novel arta dependent anchoring mechanism structurally diverse previously known specifically results demonstrate tat sec substrates contain conserved tripartite structure predicted arta substrates processed arta dependent manner tripartite structure need lie near terminus processing occur data improve understanding archaeal cell biology invaluable silico subcellular localization predictions archaeal bacterial proteins
background personalized medicine potential allow patients receive drugs specific individual disease increase efficiency healthcare system currently comprehensive overview personalized medicine research aims provide overview concept definition personalized medicine nine european countries methods targeted literature review selected health databases grey literature conducted collate information regarding definition process use funding impact challenges associated personalized medicine depth qualitative interviews carried experts health technology assessment clinical provisioning payer academic economic industry experience patient organizations results identified wide range definitions personalized medicine studies referring use diagnostics individual biological information genetics biomarkers studies mentioned patients needs beliefs behaviour values wishes utilities environment circumstances little evidence literature formal incorporation patient preferences evaluation new medicines interviewees described approaches stratification segmentation patients based genetic markers diagnostics mentioned health related quality life conclusions published literature personalized medicine predominantly focused patient stratification according individual biological information although approaches important incorporation environmental factors patients preferences decision making also needed future personalized medicine move treating diseases managing patients taking account individual factors
peptide major histocompatibility complex class pmhc tetramers invaluable tool study cell responses reagents directly bind cell receptors surface lymphocytes fluorochrome labeled pmhc tetramers enable accurate detection antigen specific cells without need vitro stimulation moreover combined multi color flow cytometry pmhc tetramer staining reveal key aspects specific cells including differentiation stage memory phenotype activation status types analyses especially useful field hiv immunology cells affect progression aids experimental infection rhesus macaques simian immunodeficiency virus siv provides invaluable tool study cellular immunity aids virus result considerable progress made defining characterizing cell responses animal model present optimized protocol enumerating siv specific cells rhesus macaques pmhc tetramer staining assay permits simultaneous quantification memory phenotyping two pmhc tetramer cell populations per test might useful tracking siv specific cell responses generated vaccination siv infection considering relevance nonhuman primates biomedical research methodology applicable studying cell responses multiple disease settings
dna encoded chemical library technology developed vision becoming transformational platform drug discovery hope new paradigm discovery low molecular weight drugs would enabled combining vast molecular diversity achievable combinatorial chemistry information encoding attributes dna power molecular biology streamlined selection based discovery process describe discovery early clinical development gsk inhibitor soluble epoxide hydrolase seh ephx using encoded library technology elt gsk orally bioavailable potent selective inhibitor seh long half life produced serious adverse events first time human clinical study knowledge gsk first molecule discovered technology enter human clinical testing represents realization vision dna encoded chemical library technology efficiently yield molecules favorable properties readily progressed high quality drugs
discrimination isomeric methylated metabolites important step toward identifying genes responsible methylation presents substantial challenges authentic standards often unavailable mass spectra isomers considered indistinguishable report approach described identifying methyl group positions multiply methylated flavonoid metabolites using combinations tandem mass spectrometry liquid chromatography retention site selective methylation recombinant methyltransferases solanum habrochaites basis observed fragment ions tandem mass spectra multiply methylated myricetin established using enzymatic incorporation deuterium labeled methyl groups using adenosylmethionine precursor
emergence mobilized colistin resistance gene representing novel mechanism bacterial drug resistance challenges last resort severe infections gram negative bacteria multi drug resistances recently showed diversity mcr carrying plasmid reservoirs gut microbiota reported similar complex scenario present healthy swine populations southern china amongst pieces escherichia coli isolates different pig farms coli isolates determined positive mcr gene multi locus sequence typing assigned less kinds sequence types including one novel sequence type mcr positive strains pcr analyses combined direct dna sequencing revealed unexpected complexity mcr harbouring plasmids whose backbones least grouped types four new transcriptional analyses showed mcr promoter different origins exhibits similar activity seems likely complex dissemination diversified mcr bearing plasmids occurs amongst various coli inhabiting healthy swine populations southern china
scope xanthohumol bioactive prenylflavonoid hops single dose pharmacokinetic study conducted men women determine dose concentration relationships methods results subjects received single oral dose blood collected plasma levels metabolites isoxanthohumol prenylnaringenin prenylnaringenin measured xanthohumol conjugates dominant circulating flavonoids among subjects levels undetectable subjects profile showed peak concentrations around ingestion maximum concentrations max dose respectively using noncompartmental modeling area curves auc infinity dose respectively mean half life dose conclusion distinct biphasic absorption pattern conjugates major circulating metabolites
position conjugation flavonoid quercetin dramatically affects biological activity vitro therefore important determine exact nature plasma metabolites present study used various methods hplc diode array detection lcms chemical enzymic synthesis authentic conjugates specific enzymic hydrolysis show quercetin glucosides present plasma human subjects consumption onions rich source flavonoid glucosides four individuals similar qualitative profiles metabolites major circulating compounds plasma identified quercetin glucuronide methyl quercetin glucuronide quercetin sulfate existence substitutions ring plasma quercetin metabolites suggests conjugates different biological activities
background knockdown resistance kdr caused alterations voltage gated sodium channel one mechanisms responsible pyrethroid resistance asian tiger mosquito aedes albopictus least four different mutations described iiis segment populations asia north america europe contrast aedes aegypti least non synonymous mutations reported nine different codons mostly iis iiis segments phecys kdr mutation iiis segment prevalent populations aegypti worldwide also found albopictus singapore herein investigated dna diversity corresponding iis iiis segments natural populations albopictus brazil methods dna eight brazilian albopictus natural populations individually extracted pooled states origin amplified cloned sequenced corresponding iis iiis segments additionally samples location individually genotyped allelic specific pcr pcr approach obtain genotypic allelic frequencies site results non synonymous substitutions observed iis sequences however phecys kdr mutation evidenced albopictus iiis segment sequences parana rondonia states mato grosso state cys kdr allele varied marilena porto velho foz lguacu knowledge paper reports first occurrence provides distribution data possible kdr mutation albopictus south america conclusion emergence likely kdr mutation albopitus natural populations signal alert vector control measures since popular insecticides adopted residents additionally kdr allele present frequency tends increase faster exposition compounds although asian tiger mosquito incriminated important vector dengue chikungunya zika viruses south america importance regard extensively discussed since albopictus rapidly spreading also migrate sylvatic urban environments therefore insecticide resistance monitoring initiatives also extended albopictus brazil order maintain chemical compounds efficient vector control tool needed
edwin southern professor emeritus university oxford perhaps best known development southern blot southern university edinburgh wrote landmark paper southern blot provided scientific breakthrough allowing scientists detect particular dna sequence without first purifying rest genome basic method involves transfer dna membrane followed detection specific probe although people perform southern blots originally carried southern due part recent technique polymerase chain reaction basic concept continues play important role molecular biology
vitamins micronutrient chemical compounds synthesized organism essential human metabolism life act required intermediaries cofactors coenzymes many reactions normal metabolism addition anti inflammatory effects reported specific vitamins inflammatory bowel disease ibd vitamin deficiency often due malnutrition due decreased food intake malabsorption due inflamed malfunctioning mucosa diarrhea results anemia vitamin folic acid supplementation may necessary ibd patients especially crohn disease either inflammation terminal ileum resection terminal ileum also recommended therapy sulfasalazine compound inhibits absorption vitamin patients high continuous inflammatory activity frequent therapy steroids increased risk low bone mineral density vitamin deficiency monitored regularly vitamin supplemented recent trial trend towards reduced risk relapses patients treated vitamin reported limited studies case reports exist vitamin deficiencies vitamins niacine found ibd patients summarized review regular nutritional monitoring ibd patients warranted requires special attention treating physicians dieticians copyright karger basel
looking back literature enzymatic biodiesel evident research focused using immobilized lipase enable use enzyme due price constraints lipases used catalyzing transesterification process use liquid formulations lipase biodiesel recently implemented industry technology using liquid formulated lipases enzymatic biodiesel production new since enzyme prices reduced possible simplify process considerably apply low quality oils paper use liquid lipase formulations enzymatic biodiesel described along general proposal industrial scale enzymatic biodiesel process yield
extremely useful define rapid accurate method identifying homozygous heterozygous transgenic animals prior setting tip breeding programs transgenic colonies experiments gene dosage effects could functional impact southern blotting means identifying zygosity method time consuming produces high level ambiguous results years ago described rapid precise non ambiguous high throughput identification zygosity transgenic animals real time pcr technique allows make clear cut identification transgenic rats transgenic mice double transgenic pigs since however several authors made improvements method following paper describes case zygosity determined using real time pcr
protocadherin member protocadherin family expressed aberrantly many types human cancers however expression function underlying mechanisms little known gastric cancer study detected protocadherin expression gastric cancer tissues non tumorous gastric mucosa tissues realtime quantitative polymerase chain reaction immunohistochemistry association protocadherin expression clinicopathological characteristics prognosis subsequently analyzed mts dimethylthiazol carboxymethoxyphenyl sulfophenyl tetrazolium transwell assays performed assess effect protocadherin proliferation migration invasion gastric cancer cell lines moreover real time quantitative polymerase chain reaction western blot used detect expression epithelial mesenchymal transition markers protocadherin expression decreased gradiently normal tissue gastric cancer especially gastric cancer tissue lymph node metastasis low expression protocadherin significantly associated lauren classification lymph node metastases tumor node metastasis stage well poor prognosis furthermore regulation protocadherin gastric cancer cell lines significantly increased migration invasion abilities additionally results demonstrated cadherin expression regulated gastric cancer cells protocadherin depletion data indicated protocadherin may play important roles invasion metastasis gastric cancer protocadherin could suppress cell migration invasion cadherin inhibition protocadherin serve novel biomarker diagnostic prognosis patients gastric cancer
escherichia coli able utilize ribose sole carbon source genes transport initial step metabolism ribose form single rbsdacbk operon rbsabc forms abc type high affinity ribose transporter rbsd rbsk involved conversion ribose ribose phosphate absence inducer ribose ribose operon repressed laci type transcription factor rbsr encoded gene located downstream ribose operon present rbs operon believed target regulation rbsr genomic selex screening however identified rbsr binds rbs promoter also promoters set genes involved purine nucleotide metabolism northern blotting analysis indicated rbsr represses purhd operon novo synthesis purine nucleotide activates add udk genes involved salvage pathway purine nucleotide synthesis taken together propose rbsr global regulator switch control novo synthesis purine nucleotides salvage pathway
human intervention studies provided clear evidence dietary polyphenols flavonoids flavonols isoflavones least partly absorbed potential exert biological effects biological activity polyphenols often assessed using cultured cells tissue models almost studies cells treated aglycones polyphenol rich extracts derived plants foods data reported concentrations elicited response inherent flaws approach first plasma tissues exposed vivo polyphenols forms several human studies identified nature polyphenol conjugates vivo shown dietary polyphenols undergo extensive modification first pass metabolism forms reaching blood tissues general neither aglycones except green tea catechins dietary source polyphenols present conjugates glucuronate sulfate without methylation catechol functional group consequence polyphenol conjugates likely possess different biological properties distribution patterns within tissues cells polyphenol aglycones although deconjugation potentially occur vivo produce aglycone occurs certain sites second polyphenol concentrations tested order maximum plasma concentrations attained polyphenol rich meal range mumol correct interpretation results future efforts define biological activities polyphenols must make use available data concerning bioavailability metabolism humans
recent insights emerging strategies individualized therapeutic approaches patients genitourinary cancers based patient genomic cancer molecular profiles depends significant advances made molecular biology technologies next generation sequencing whole exome sequencing rise novel techniques grayly increased knowledge cancer cell biology development thus allowing identify complex abnormalities genomic level findings paved way toward called precision medicine thus providing healthcare individual perspective patients tumors
progesterone estrogens androgens glucocorticoids involved pregnancy implantation parturition biosynthesis metabolism result complex pathways involving fetus placenta mother absence expression steroidogenic enzymes cyp placenta adrenal fetal zone better determination onset variation others especially hsdb pregnancy explain production steroid hormones moreover consequences disorders steroidogenesis especially aromatase por cypa hydroxylase deficiencies fetus mother pregnancy permit elucidate complex pathways better knowledge steroid hormones production associated dosages maternal plasma urine amniotic fluid using new specific assays could facilitate follow normal pathological pregnancies moreover advances basis evaluate impact multiple pathologies pregnancy pharmacologic xenobiotic consequences metabolism elsevier masson sas rights reserved
rising temperatures begun shift flowering time unclear whether phenotypic plasticity accommodate projected temperature change century evaluating clines phenological traits extent variation plasticity provide key information assessing risk maladaptation developing strategies mitigate climate change study flower phenology examined populations big sagebrush artemisia tridentata growing three common gardens flowering date anthesis varied days late july late november among gardens mixed effects modeling explained variation flowering date could assigned plasticity genetic variation plasticity genetics conditional marginal two environmental variables explained genetic variation photoperiod onset spring julian date accumulating degree days degrees reaching genetic variation mapped contemporary future climates decades showing flower date change varies considerably across landscape plasticity estimated accommodate average day change flowering date however examination genetic variation plasticity suggests magnitude plasticity could affected variation sensitivity photoperiod temperature warmer common garden lower latitude populations greater plasticity days compared higher latitude populations days mapped climatypes flowering date contemporary future climates illustrate wide breadth plasticity large geographic overlap research highlights importance integrating information genetic variation phenotypic plasticity climatic niche modeling evaluate plant responses elucidate vulnerabilities climate change
glycogen branching enzyme catalyses formation alpha glycosidic branch points glycogen structure often used enhance nutritional value quality food beverages order applicable industries enzymes stable active high temperature much desired using genome mining nucleotide sequence branching enzyme gene glgb extracted geobacillus mahadia geo genome sequence provided malaysia genome institute size gene theoretical molecular weight protein kda gene sequence used predict thermostability function three dimensional structure enzyme gene cloned overexpressed coli verify predicted result experimentally purified enzyme used study effect temperature enzyme activity stability inhibitory effect metal ion enzyme activity thermostable glycogen branching enzyme found active degrees half life degrees degrees respectively research thermostable glycogen branching enzyme successfully isolated geobacillus mahadia geo genome mining together molecular biology technique
health care onset health care facility associated clostridium difficile infection cdi overdiagnosed several reasons including high prevalence difficile colonization inability hospitals limit testing patients clinically significant diarrhea conducted quasiexperimental study june june consecutive inpatients difficile test orders academic hospital real time electronic patient data tracking used laboratory enforce testing criteria defined presence diarrhea formed stools absence laxative intake prior outcome measures included difficile test utilization cdi incidence oral vancomycin utilization clinical complications intervention difficile test orders canceled due absence diarrhea receipt laxative therapy respectively difficile test utilization decreased upon implementation average tests tests per patient days cdi incidence rate decreased average cases cases per patient days oral vancomycin days therapy decreased average days days per patient days clinical complication rates significantly different patients canceled orders compared episodes diarrhea negative difficile results real time electronic clinical data tracking effective tool verification difficile clinical testing criteria safe reduction inflated cdi rates
present study designed compare expression pattern dlx four different mineralized tissues role skeleton patterning expression dental epithelium mesenchyme morphogenesis membranous endochondral bone tooth phenotype tricho dento osseous syndrome related dlx gene mutation recently emerging knowledge dlx family members bone field ameloblasts odontoblasts osteoblasts chondrocytes analyzed ill vitro vivo dlx transcripts detected pcr established model systems microdissected dental epithelium mesenchyme primary cultures rat chondrocytes recently performed osteoblasts vitro human dlx probe generated human dlx sense rna identified maxillo facial samples northern blotting immunolabeling situ hybridization performed mice theiler stage birth teeth although dlx still expressed differentiated ameloblasts regulated odontoblast polarization endochondral bone formation dlx protein detected chondrocytes strongly expressed prehypertrophic cartilage zone differentiating differentiated osteoblasts inetaphyseal periosteum vitro real time pcr studies supported upregulation prehypertrophic chondrocytes closely correlated ihh variations membranous bone dlx present preosteoblasts osteoblasts osteoid osteocytes present data dlx recently published functional studies show transcription factor may instrumental growth control matrix deposition biomineralization entire skeleton elsevier inc rights reserved
background hypertension associated diabetes participates development diabetic complications spontaneously hypertensive rat shr gold standard model study hypertension experimental diabetes currently investigated shr wistar kyoto rat usually taken control shr however regarding glycemic homeostasis wky may similar shr compared standard wistar rat importantly affecting interpretation data slca gene encodes glut protein expressed insulin sensitive tissues muscle cells adipocytes alteration slca glut expression inversely related glycemic levels investigated effect diabetes expression slca glut glycemic control wistar kyoto shr findings slca mrna northern blotting glut protein western blotting investigated skeletal muscles soleus extensor digitorum longus wistar wistar kyoto shr rendered diabetic month non diabetic shr shows hyperinsulinemia unaltered glut expression hyperglycemia significantly attenuated diabetic wistar kyoto shr compared observed diabetic wistar although presented hypoinsulinemic levels besides diabetes significantly reduced slca glut wistar expected however observed diabetic wistar kyoto shr conclusions non diabetic shr insulin resistant despite unaltered glut expression diabetic wistar kyoto diabetic shr presented high slca glut expression skeletal muscle compared diabetic wistar slca glut regulation depend insulin level possibly protects wky shr severe glycemic impairment
exosomes nano sized vesicles surrounded lipid membrane tend secreted toward extra cellular environments despite defined vesicles involved excretion molecular wastes rose johnstone studies revealed effective various biological processes cancer development regulation immune system intercellular communication stem cell biology tissue organ regeneration although many studies dealing role exosomes stem cell differentiation use exosomes isolated stem cells treatment several diseases published involved mechanisms remain largely unknown understanding mechanisms include involved cellular pathways may improve use exosomes diagnostic treatment methods especially involving stem cells describe recent data describing action mechanism stem cell derived exosomes focusing implicated cellular pathways hoping provide novel information useful cell biology scientists working field
glutathione gsh important thiol multiple functions human metabolism including detoxification xenobiotics radioprotection antioxidant defense provide sensitive specific method quantify intracellular gsh thiols using electrochemical detector coupled high performance liquid chromatograph hplc ecd hplc ecd system includes specially devised gold electrode large surface area thin gasket provide extremely high sensitivity thiols standard curve gsh showed good linear relationship low femtomole levels could simultaneously detect gsh cysteine acetylcysteine gamma glutamyl cysteine cysteinyl glycine method compared specificity sensitivity method conventional spectroscopic method measuring amounts gsh cell extracts although values obtained methods closely correlated electrochemical method much specific gsh method could detect fmol gsh orders orders magnitude sensitive spectroscopic method previous methods using hplc respectively example application method demonstrated time dependent alteration intracellular gsh cysteine levels could easily measured using buthionine sulfoximine inhibitor gsh synthesis basis results advantage electrochemical method extremely sensitive specific detect femtomole levels gsh various thiols elsevier science rights reserved
systemic lupus erythematosus sle common autoimmune disorder complex poorly understood immunopathogenesis however pathogenic role helper type axis demonstrated many studies regulatory cells regs shown mediate protection recently others characterized novel independent cell population expressing reg characteristic transcription factor forkhead box protein foxp defining retinoic acid receptor related orphan nuclear receptor rort studies model acute glomerulonephritis unveiled potent regulatory also proinflammatory functions rort foxp regs functional nature prompted suggest name bit regs importantly pathogenic bit reg effects dependent upon expression rort thus aimed evaluate contribution rort foxp bit regs pristane induced sle explored therapeutic potential interference rort activation analyses revealed expansion producing bit regs distinctive time course organ specific pattern coincident development autoimmunity tissue injury importantly specific ablation rort activation endogenous bit regs resulted significant amelioration pristane induced pulmonary vasculitis lupus nephritis potential mechanisms underlying observed protection found secretion bit regs abrogated completely foxp cre xrorc mice furthermore regs showed activated phenotype cell specific inactivation rort signalling finally remarkably bit regs found potently suppress anti inflammatory immunity rort dependent manner study thus identifies bit regs novel players sle advocates rort directed interventions promising therapeutic strategies
aim study investigate effect costimulation blockade cytotoxic lymphocyte associated antigen immunoglobulin ctlaig anti cdl monoclonal antibody anti cdl mab experimental autoimmune myocarditis eam mouse model characteristics myocardial tissue observed hematoxylin eosin staining messenger rna mrna levels ctla cdl ifn gamma detected real time fluorescence quantitative polymerase chain reaction qpcr serum concentrations ifn gamma determined elisa immune intervention inflammatory score mrna levels ctla cdl ifn gamma level decreased furthermore parameters combinational intervention group blockade ctlaig anti cdl mab significantly decreased compared single intervention group blockade ctlaig anti cdl mab however costimulation blockade serum levels increased therefore costimulation blockade combination ctlaig anti cdl mab could effectively inhibit inflammatory response eam single use ctlaig anti cdl mab
purpose unverricht lundborg disease epma frequently due unstable expansion dodecamer repeat cstb gene whereas types mutations rare epma due homozygous expansion rather stereotyped presentation prominent action myoclonus describe eight patients five different compound heterozygous cstb point indel mutations order highlight particular phenotypical presentations evaluate genotypephenotype relationships methods screened cstb mutations means southern blotting sequencing genomic dna proband cstb messenger rna mrna aberrations characterized sequencing complementary dna cdna lymphoblastoid cells assessing protein concentrations lymphoblasts patient evaluations included use simplified myoclonus severity rating scale multiple neurophysiologic tests electroencephalography eeg polygraphic recordings highlight particular clinical features disease time course compound heterozygous patients compared characteristics observed series patients carrying common homozygous expansion mutation observed besta foundation milan italy key findings eight compound heterozygous patients belong six epma families diagnosed laboratory genetics galliera hospitals genoa italy segregated five different heterozygous point indel mutations association common dodecamer expansion four patients three families previously reported cstb mutations del one novel nonsense mutation first exon leading premature stop codon predicting short peptide three patients two families complex novel indel mutation involving donor splice site intron delinsaa leading aberrant transcript partially retained intron protein dose cystatin beta actin heterozygous patients different assessed patients bearing homozygous dodecamer expansion compound heterozygous patients significantly earlier disease onset years homozygous patients disease presentations included frequent myoclonic seizures absences often occurring clusters throughout course disease seizures resistant pharmacologic treatments usually lead complete seizure control homozygous patients eeg polygraphy allowed repeated seizures recorded action myoclonus progressively worsened heterozygous patients older years wheelchairs patients showed moderate severe cognitive impairment six psychiatric symptoms significance epma due compound heterozygous cstb mutations presents variable often markedly severe particular phenotypes patients presented electroclinical features severe epilepsy unexpected homozygous patients showed frequent seizures resistant pharmacologic treatment presence variable phenotypes even siblings suggests interactions genetic factors influencing final disease presentation
post translational modification proteins ubiquitin represents complex signalling system ordinates essential cellular functions including proteolysis dna repair receptor signalling cell communication dubs deubiquitinases enzymes disassemble ubiquitin chains remove ubiquitin proteins central system reflecting complexity versatility ubiquitin signalling dub activity controlled multiple ways although several lines evidence indicate aberrant dub function may promote human disease underlying molecular mechanisms often unclear notwithstanding considerable interest dubs potential drug targets emerged past years future success dub based therapy development require connecting basic science dub function enzymology drug discovery present review discuss new insights dub activity regulation links disease focusing role dubs regulators cell identity differentiation discuss potential emerging drug targets
background dna pkcs stimulates endonucleolytic activities artemis exonuclease activity results point mutagenesis small molecule inhibitors modulation divalent cation concentrations affect endonuclease exonuclease activities parallel conclusion artemis intrinsic exonuclease activity addition known endonuclease activity significance artemis may use endo exonuclease activity nhej artemis member metallo lactamase protein family artemis endonuclease activity dna hairpins dna overhangs duplex dna endonucleolytic activity dependent upon dna pkcs uncertainty whether artemis also exonuclease activity single stranded dna overhangs exonuclease dependent upon dna pkcs show exonuclease endonuclease activities purify second show point mutant artemis putative active site residue markedly reduces endonuclease activity exonuclease activity third divalent cation effects exonuclease endonuclease parallel one another fourth endonuclease activity exonuclease activity artemis blocked parallel small molecule inhibitors block unrelated nucleases conclude exonuclease intrinsic artemis making relevant role artemis nonhomologous dna end joining
objectives prospectively evaluate immunogenicity valent conjugated pneumococcal vaccine pcv rheumatoid arthritis patients undergoing etanercept therapy methods twenty two patients treated etanercept eta combination methotrexate mtx monotherapy least one year included altogether osteoarthritis patients receiving biological mtx therapy treating nsaids analgesics served controls subjects vaccinated single dose pcv pneumococcal antibody levels baseline weeks assessed vacczyme anti pcp igg enzyme immunoassay kit based recommendations american academy allergy asthma immunology least two fold increase antibody level protective antibody response par indicator responsiveness ratio postvaccination prevaccination antibody levels antibody levels ratios analysed variety different ways vaccine safety parameters fever infections changes regular antirheumatic treatments assessed baseline weeks vaccination results four weeks vaccination anti pneumococcal antibody levels significantly increased groups week antibody levels somewhat decreased groups however still remained significantly higher compared baseline compared postvaccination levels weeks two groups mean protective antibody levels higher control group month month possible predictors par analysed logistic regression model increases antibody levels week compared baseline exerted negative correlation age spearman clinically significant side effects reaction administration vaccine observed patients month follow period patients medical condition stable conclusions patients treated eta vaccination pcv effective safe resulting par one two months vaccination higher age vaccination identified predictors impaired par efficacy vaccination may pronounced younger patients vaccine safe patients eta societe francaise rhumatologie published elsevier masson sas rights reserved
liver cancer second leading cause death worldwide hepatocellular carcinoma common primary cancer liver identification molecules might molecular markers therapeutic targets urgently needed improve clinical management based microarray analysis performed laboratory selected six genes namely anxa dynlt pfkp plag krt snx candidates validation tumor markers liver cancer rat model patterns overexpression preneoplastic lesions established tumors different time points months analyzed identify putative tumor markers studies validated microarray results quantitative reverse transcription polymerase chain reaction revealed high transcriptional expression five genes consistent high protein expression cancer progression reported literature however studies association sorting nexin different types cancer limited prompting study characterization sorting nexin preneoplastic lesions established tumors revealed messenger rna overexpression simultaneous decrease sorting nexin protein expression group micrornas related sorting nexin messenger rna selected based data analysis conducted using mirdb microrna org analysis expression micrornas revealed increase transcription microrna whenever sorting nexin protein downregulated results suggest sorting nexin potential liver cancer marker exhibiting characteristics putative suppressor protein likely regulated microrna
cellular sensing virus derived nucleic acids essential early defenses virus infections recent years discovery dna sensing proteins including cyclic gmp amp synthase cgas gamma interferon inducible protein ifi led understanding cells evoke strong innate immune responses incoming pathogens carrying dna genomes signaling stimulated dna sensors depends adaptor protein sting stimulator interferon genes enable expression antiviral proteins including type interferon facilitate efficient infections viruses evolved wide range evasion strategies targeting host dna sensors adaptor proteins transcription factors review current literature virus induced activation sting pathway presented discuss recently identified viral evasion mechanisms targeting different steps antiviral pathway
resistance anticancer medications often leads poor outcomes present study explored effective approach enhancing chemotherapy targeted human cancer cells real time quantitative real time polymerase chain reaction qrt pcr analysis revealed overexpression members aldo keto reductase akr family akrc akrc akrc akrc cisplatin cis diamminedichloroplatinum cddp resistant human cancer cell lines hela cervical cancer cells oral squamous cell carcinoma cells genes downregulated using small interfering rna sirna transfection sensitivity cddp fluorouracil investigated genes knocked sensitivity cddp restored furthermore found administration mefenamic acid widely used non steroidal anti inflammatory drug nsaid known inhibitor akrcs enhanced sensitivity cddp present study suggests akrc family closely associated drug resistance cddp mefenamic acid enhances sensitivity inhibitory activity drug resistant human cancer cells thus use mefenamic acid control biological function akrc may lead effective clinical outcomes overcoming anticancer drug resistance
primer extension rna rnase iii null mutant streptomyces coelicolor primer complementary polynucleotide phosphorylase gene revealed two major extension products two different extension products observed using rna either wild type null mutant primer complementary rpso mapping ends extension products rpso pnp intergenic region indicated four putative transcription start sites preceded possible promoter sequences putative promoters synthesized pcr cloned pipp xyle based streptomycete promoter probe vector transfer pipp derivatives coelicolor catechol dioxygenase assays demonstrated four cloned fragments promoter activity vivo activities four promoters changed course growth coelicolor studies three sigma factor mutant strains demonstrated three promoters sigma dependent northern blotting studies showed levels rpso pnp transcripts remained relatively constant course growth coelicolor molar basis levels readthrough pup transcripts considerably lower rpso pnpase cold shock protein coelicolor activity rpso pnp promoters increased cold shock degrees resulting twofold increase pnpase activity compared activity degrees elsevier rights reserved
fundamental question cell biology investigation six decades structural organization mitochondrial cristae long known harbor electron transport chain proteins crista membrane integrity key establishment proton gradient drives oxidative phosphorylation visualization cristae morphology electron microscopy tomography provided evidence cristae tube like extensions mitochondria inner membrane project matrix space reconciling ultrastructural data lipid composition provides support continuously curved cylindrical bilayer capped dome shaped tip strain imposed degree curvature relieved asymmetric distribution phospholipids monolayer leaflets comprise cristae membranes signature mitochondrial lipid cardiolipin similar phospholipid mass phosphatidylethanolamine segregate negatively curved monolayer leaflet facing crista lumen opposing positively curved matrix facing monolayer leaflet contains predominantly phosphatidylcholine associated cristae numerous proteins function distinctive ways establish maintain lipid repertoire structural integrity combining unique lipid components set protein modulators crista membranes adopt maintain characteristic morphological functional properties established cristae ultrastructure direct impact oxidative phosphorylation apoptosis fusion fission well diseases compromised energy metabolism elsevier rights reserved
background blocking reductase mediated testosterone conversion dihydrotestosterone dht finasteride dutasteride driving hypothesis behind two prostate cancer prevention trials factors affecting intracellular androgen levels androgen receptor signaling axis need examined systematically order fully understand outcome interventions using drugs methods expression three reductase isozymes determined immunohistochemistry qrt pcr studied five human prostate cancer cell lines intracellular testosterone dht analyzed using mass spectrometry luciferase reporter assay regulated genes used evaluate modulation activity results prostate cancer cells capable accumulating testosterone level times higher medium profile expression reductase isozymes predict capacity convert testosterone dht finasteride dutasteride able depress testosterone uptake addition lowering intracellular dht inhibition activity following drug treatment often exceeded expected response due reduced availability dht ability maintain high intracellular testosterone might compensate shortage dht conclusions biological effect finasteride dutasteride appears complex may depend interplay several factors include testosterone turnover enzymology dht production ability use testosterone dht interchangeably propensity cells target inhibitory effect wiley periodicals inc
amino terminal acetylation ubiquitous modification eukaryotes involved growing number biological processes six known eukaryotic amino terminal acetyltransferases nats differentiated one another basis substrate specificity date two eukaryotic nats nata nate structurally characterized nata acetylate amino group number nonmethionine amino terminal residue substrates serine nate requires substrate amino terminal methionine residue activity interestingly two nats use different catalytic strategies accomplish substrate specific acetylation archaea modification less prevalent one nat enzyme identified surprisingly enzyme able acetylate nata nate substrates believed represent ancestral nat variant eukaryotic nat machinery evolved gain insight evolution nat enzymes determined ray crystal structure archaeal nat sulfolobus solfataricus ssnat use mutagenesis kinetic analysis show active site ssnat represents hybrid nata nate active sites highlight features protein allow facilitate catalysis distinct substrates different catalytic strategies unique characteristic enzyme taken together structural biochemical data presented implications evolution eukaryotic nat enzymes substrate specificities therein
food non animal origin major component human diet considered pose low risk point view bacteriological safety however increase number outbreaks illness caused pathogens linked consumption fresh fruit vegetables reported around world recently salmonella spp stec shiga toxin producing escherichia coli listeria monocytogenes among frequently identified agents additionally transmission antibiotic resistant strains including also methicillin resistant aureus mrsa humans via food chain one greatest public health problems confronted today therefore focused bacterial safety fruit vegetables sprouts sale czech republic one strain salmonella enteritidis phage type one strain mrsa strains monocytogenes isolated total collected samples problematic commodities frozen fruit vegetables packed unpacked fresh cut vegetables findings indicate deficiencies hygiene practices harvesting processing distribution commodities although sprouts berries likely contaminated human pathogens two samples positive presence monocytogenes elsevier ltd rights reserved
acute lymphoblastic leukemia common cancer children survival rates improved central nervous system cns relapse remains significant cause treatment failure treatment related morbidity accordingly need identify efficacious less toxic cns directed leukemia therapies extensive research demonstrated critical role bone marrow microenvironment leukemia development maintenance chemoresistance moreover therapies disrupt mechanisms microenvironment mediated leukemia survival chemoresistance represent new promising approaches cancer therapy however direct contrast extensive knowledge microenvironment unique attributes cns microenvironment serve make leukemia reservoir yet elucidated recent work begun define mechanisms leukemia cells migrate cns components cns influence leukemia biology enhance survival chemoresistance ultimately relapse addition providing new insight cns relapse leukemia biology area investigation potentially identify targetable mechanisms leukemia chemoresistance self renewal unique cns environment enhance durability quality cure patients
interpretation clinical data regarding impact cytomegalovirus cmv infection allograft function complicated diversity viral strains substantial variability cellular receptors viral gene expression different tissues variation also exists nonspecific monocytes dendritic cells specific cells antibodies responses augment cell antiviral activities innate immune signaling pathways expanded pools memory cells cells also serve amplify host responses infection clinical impact specific memory cell anti cmv responses cross react graft antigens alloantigens uncertain appears contribute graft injury abrogation allograft tolerance responses modified diverse immunosuppressive regimens underlying host immune deficits impact cmv infection transplant recipient reflects cellular changes corresponding host responses convergence termed indirect effects cmv infection future studies clarify interactions cmv infection allograft injury guide interventions may enhance clinical outcomes transplantation cytomegalovirus infection reflects variety cellular changes host responses review examines variability cellular receptors viral gene expression different tissues innate adaptive immune responses may contribute graft injury abrogation allograft tolerance
insulin resistance clinical feature polycystic ovary syndrome pcos quercetin derived chinese medicinal herbs hawthorn proven practical management diabetes however whether quercetin could decrease pcos unknown study aims observe therapeutic effect quercetin pcos rat model explore underlying mechanism pcos rat model established subcutaneous injection dehydroepiandrosterone body weight estrous cycle ovary morphology quercetin treated rats observed serum inflammatory cytokines analyzed using enzyme linked immunosorbent assay ovarian tissues expression key genes involved inflammatory signaling pathway detected western blot real time polymerase chain reaction immunohistochemistry nuclear translocation nuclear factor also observed immunofluorescence estrous cycle recovery rate insulin resistant pcos model quercetin treatment quercetin significantly reduced levels blood insulin interleukin tumor necrosis factor quercetin also significantly decreased granulosa cell nuclear translocation insulin resistant pcos rat model treatment inhibited expression inflammation related genes including nicotinamide adenine dinucleotide phosphate oxidase subunit pphox oxidized low density lipoprotein toll like receptor ovarian tissue quercetin improved demonstrated favorable therapeutic effect pcos rats underlying mechanism quercetin potentially involves inhibition toll like receptor signaling pathway improvement inflammatory microenvironment ovarian tissue pcos rat model
development uncoupling protein ucp ablated mouse become possible strictly delineate physiological significance thermogenic capacity brown adipose tissue considering presence active brown adipose tissue adult humans insights may direct human implications addition classical nonshivering thermogenesis adaptive adrenergic thermogeneses including diet induced thermogenesis fully dependent brown adipocyte activity weight reducing effect beta adrenergic agonists fully dependent ucp activity weight reducing effect leptin excess effect reduction food intake consequently absence thermogenic activity brown adipose tissue obesity develops spontaneously ability brown adipose tissue contribute glucose disposal also mainly related thermogenic activity however basal metabolic rate cold induced thermogenesis acute cold tolerance fevers nonadaptive adrenergic thermogenesis processes angiogenesis brown adipose tissue dependent ucp activity whereas likely conclusions also qualitatively valid adult humans quantitative significance brown adipose tissue human metabolism metabolic consequences single individual possessing less brown adipose tissue awaits clarification international journal obesity doi ijo
objectives adiponectin novel plasma protein produced exclusively adipocytes despite early data relationship obesity diabetes recently questioned since plasma lipids influence diabetes obesity concern whether associations plasma lipids adiponectin exist design methods aim study measure adiponectin levels investigate associations plasma cholesterol fractions triglycerides obese non diabetic subjects women men obese diabetic subjects women men aged years respectively matched age sex bmi definitions obesity diabetes used adiponectin determined enzyme linked immunosorbent assay results correlations adiponectin total ldl cholesterol levels shown whole cohort respectively positive correlation hdl cholesterol levels adiponectin occured predominantly obese women without diabetes resulting overall statistical trend whole cohort negative correlation serum adiponectin triglycerides found conclusion adiponectin correlated partially hdl ldl total cholesterol study group obese diabetic obese non diabetic subjects view results suggest role adiponectin human metabolism unclear merits investigation
may turkana county north western kenya tissue samples collected goats suspected died peste des petits ruminant ppr disease acute viral disease small ruminants samples processed tested reverse transcriptase pcr presence ppr viral rna positive samples sequenced identified belonging peste des petits ruminants virus pprv lineage iii full genome analysis one positive samples revealed virus causing disease kenya identical full genome virus isolated uganda segment viral fusion gene identical virus circulating tanzania data strongly indicate transboundary movement lineage iii viruses eastern africa countries significant implications surveillance control important disease moves southwards africa
develop site specific integration strategy car engineering using non viral vector dependent adeno associated viral aav genome tends integrated aavs site help rep proteins aav dependent vectors produced cells structural analyses revealed vector covalently close ended linear duplex molecules termed celid dna plasmid cmv rep constructed express integrases rep rep jurkat cells electroporated celid dna plasmid cmv rep order specifically integrate car gene aavs site examined stably transfected jurkat clones nested pcr sequencing southern blotting clones bore car gene within aavs site site specific integration efficiency nearly aav dependent vector preferentially integrated car aavs site could used human cell modification enhance security car therapy
chloroplast transformation wheat achieved bombardment scutella immature embryos immature inflorescences respectively wheat chloroplast site specific expression vector pbagnrk constructed placing expression cassette containing neomycin phosphotransferase nptii green fluorescent protein gfp selection reporter genes respectively intergenic spacer atpb rbcl wheat chloroplast genome integration gfp gene plastome identified polymerase chain reaction pcr analysis southern blotting using gfp gene probe expression gfp protein examined western blot three positive transformants obtained southern blot partial fragment atpb rbcl targeting site probes verified one homoplasmic stable expression gfp fluorescence confirmed confocal microscopy leaf tissues progeny seedlings pcr analysis gfp gene also confirmed inheritance transgene progeny results strengthen feasibility wheat chloroplast transformation also give novel method introduction important agronomic traits wheat chloroplast transformation
lipid droplets universal cellular organelles transient long term storage lipids number size composition lipid droplets vary greatly within cells homogenous population well different cell types variability intracellular lipid storage organelles reflects diversification lipid droplet composition function lipid droplet diversification results example two cellular lipid droplet populations prone diminish grow respectively aberrant accumulation depletion lipids hallmarks causes various human pathologies thus better understanding origins lipid droplet diversification fascinating cell biology question also potentially serves improve comprehension pathologies entail accumulation lipids commentary covers lipid droplet life cycle highlights early steps lipid droplet biogenesis propose potential driving forces lipid droplet diversification
traditional anti diabetic drug metformin found anticancer effects sonic hedgehog shh signaling pathway involved cogenesis gastric cancer aim present study investigate whether metformin effect shh signaling pathway gastric cancer cells hgc mkn human gastric cancer cells treated metformin different concentrations different durations subsequently mrna protein levels shh smoothened smo glioma associated oncogene gli gli gli examined using western blot reverse transcriptionquan titative polymerase chain reaction analyses rna interference used detect whether effects metformin treatment shh signaling pathway dependent amp activated protein kinase ampk results revealed protein mrna levels shh gli decreased metformin treatment two cell lines dose time dependent manner metformin also significantly inhibited gene protein expression levels smo gli gli small interfering rna induced depletion ampk reversed suppressive effect metformin recombinant human shh induced expression gli hgc gastric cancer cells therefore metformin inhibited shh signaling pathway gastric cancer cell lines inhibitory effect metformin shh pathway ampk dependent
trichosanthin tcs exhibits anti cancer effect various human cancer cells however mechanism anti cancer effect molecular level remains elucidated study underlying anti cancer mechanism tcs human ovarian cancer cells ovcar investigated using various molecular biology techniques flow cytometry western blotting major focus potential roles apoptosis autophagy tcs inhibition human ovarian cancer cells results demonstrated tcs inhibits human ovarian cancer cells growth due apoptosis autophagy tcs triggers autophagy firstly confirmed increased atg expression promoted cleavage subsequent apoptotic cell death apoptotic cell death induced tcs attenuated pharmacological genetic inhibition autophagy autophagy inhibitor functions early stage autophagy significantly reduced tcs induced cell death caspase activity human ovarian cancer cells also demonstrated inhibition apoptosis effect tcs induced autophagy ovcar cells conclusion found common pathway autophagy apoptosis exists tcs induced cell death human ovarian cancer cells might shed light drug therapy
background time progression towards aids vary greatly among seropositive patients may associated host genetic variation nri pxr gene ligand activated transcription factor regulates transcription immune pathway genes therefore targets viral replication mechanisms influencing time progression aids objective verify association single nucleotide polymorphisms snps nri pxr gene progression aids hiv infected patients methods blood samples obtained hiv positive individuals following informed consent dna isolated genotyped real time polymerase chain reaction pcr presence snps nri questionnaires socio demographic features behaviors answered time progression aids estimated based medical chart analysis findings patients genotype shown related rapid disease progression compared genotypes result maintained multivariate cox regression considering sex ethnicity presence hla hla ccrdel polymorphisms main conclusions recent studies reported expression nuclear receptors lymphocytes suggesting possible role immune response addition nuclear receptors shown inhibit hiv replication although mechanism thoroughly elucidated date first time association nri polymorphism time progression aids reported supports apparent relationship gene immune response identifies another genetic factor influencing aids progression
inadequate access prevention medical treatment female sex workers represents challenge german health system accessibility care bochum germany cooperation interdisciplinary immunology outpatient clinic center sexual health medicine josef hospital bochum health department madonna focus work medical outreach services provided diagnosis sexually transmitted infections sti brothels bochum august january clarification verbal consent free hiv syphilis chlamydia gonorrhea trichomoniasis tests offered carried using pseudonyms total reached within framework sti outreach study immigrant background majority und years old collective health insurance following stis diagnosed chlamydia syphilis gonorrhea trichomoniasis hiv results compared results sti studies germany treatment performed accordance standards german sti society offer improved accessibility utilization medical services bochum improvement services urgently needed
local dynamics variable timescales important facilitate high catalytic efficiency enzymes study examined dual domain peptidyl prolyl cis trans isomerase ppiase slyd regard catalytic cycle fluorescence nmr based experiments performed understand high catalytic efficiency slyd compared single domain fkbp proteins probed local conformational changes amino acids involved substrate binding domain substrate catalysis fkbp domain taking place timescale substrate turnover binding ppiase activity inhibitors fkbp domain suppressed conformational freedom remote domain single side chain mutation active site strongly reduced rate substrate turnover changed conformational dynamics amino acids involved catalysis dynamic interplay substrate binding domain ppiase domain determines high catalytic activity slyd inhibitor binding modulates backbone plasticity required enzyme activity elsevier rights reserved
cadmium free quantum dots qds attracted great attention biological biomedical applications due less content toxic metals potential toxicity investigations molecular biology level rarely involved since studies addressed whether inp zns qds could bind alter structure function human serum albumin hsa vitro interaction inp zns qds hsa systematically characterized multispectroscopic approaches inp zns qds could quench intrinsic fluorescence hsa via static mode binding site inp zns qds mainly located subdomain iia hsa thermodynamic parameters suggested inp zns qds interacted hsa mainly electrostatic interactions revealed three dimensional spectrometry spectrometry circular dichroism technique inp zns qds caused global local conformational change hsa cdse zns qds illustrated stronger binding interaction higher potential toxicity inp zns qds biological function hsa results offer insights vitro binding mechanism inp zns qds hsa provide important information possible toxicity risk cadmium free qds human health elsevier rights reserved
study evaluated whether quantitative pcr qpcr reverse transcription qpcr qpcr results could affected extracellular free dna rna respectively obtained either isolated bacteria fermented dairy foods manufactured microorganisms experimental set ups involved two starter lactic acid bacteria slab streptococcus thermophilus lactococcus lactis models across common technological environments yoghurt milk cheese presence free dna modified qpcr results levels sufficient bias slab determinations indicating dna may poor measure cellular integrity furthermore showed first time order magnitude free rna dna used modify qpcr results importantly interference produced free dna rna maintained across dairy matrices evaluated independently slab source nucleic acids used negative positive samples study suggests contrary dna molecules mrna dead microorganisms extracellular sources may determinant factor skewing molecular quantifications therefore results support potential use mrna molecular signature cell integrity dairy matrices elsevier ltd rights reserved
pleiotrophin ptn demonstrated strongly expressed many fetal tissues seldom healthy adult tissues ptn reported expressed many types tumors well high serum concentrations patients many types cancer date report ptn expressed leukemia especially lymphocytic leukemia isolated subset cells peripheral blood healthy adults cell acute lymphocytic leukemia patients cell chronic lymphocytic leukemia cll patients examined cells ptn mrna protein expression used immunocytochemistry western blotting enzyme linked immunosorbent assay show ptn protein highly expressed cells cll patients barely expressed cells healthy adults also examined ptn expression nucleic acid level using reverse transcription polymerase chain reaction pcr northern blotting detected high levels ptn transcripts cells groups leukemia patients cells healthy controls interestingly quantity ptn transcripts correlated severity disease moreover suppression ptn activity anti ptn antibody promoted apoptosis cells leukemia patients cell lines sms jvm effect anti ptn antibody suggests ptn may new target treatment lymphocytic leukemia
ehrlichiosis lung transplant recipients associated severe outcomes ehrlichia ewingii less frequent cause symptomatic ehrlichiosis characterized cytoplasmic inclusions morulae within circulating neutrophils report case ewingii infection recipient diagnosed promptly blood smear exam confirmed molecular studies
adenoviruses cause variety diseases range mild fatal vulnerable patients evolution occurs process selection pressure example genetic recombination generates intermediate strains infectious pathogenic parental strains study sought determine diversity circulating adenoviruses paraguayan children less years age hospitalized acute lower respiratory infection using molecular biology bioinformatics tools though amplification penton hexon fiber genes samples nasopharyngeal aspirates demonstrated circulation three species well recombination events corresponding hadv isolate least three different genotypes hadv associated gastrointestinal ocular diseases less commonly respiratory infections recently however reported changes behavior viruses due recombination allowing expand host cell repertoire data extend knowledge genetic diversity hadv paraguay strongly support importance genomic analysis using bioinformatics tools epidemiological surveillance emerging recombinant strains hadv
introduction study hypothesised genotypes coding low antioxidative enzyme activity associated asthma reduced lung function methods using european community respiratory health survey protocol enlisted danish subjects cross sectional study asthma phenotypes defined asthma symptoms combination steroid usage bronchial hyperresponsiveness atopy phenotypes lung function analysed respect glutathione peroxidase gpx proleu manganese superoxide dismutase sod alaval three glutathione transferases gstp ileval gstt gene copy number gstm gene copy number results found associations genotypes asthma phenotypes subjects identified current smokers recruited via random sampling association seen increasing number genotypes coding high antioxidative enzyme activity gpx pro pro sod val val gstp ile ile gstt two copies gstm two copies forced expiratory volume fev predicted increase fev predicted confidence interval per genotype identified significance inverse association fev predicted number genotypes coding low antioxidative enzyme activity conclusion present study support hypothesis asthma associated genotypes major antioxidative enzymes however speculate since see impact genotypes lung function young adult smokers polymorphisms antioxidative enzymes may contribute range susceptibility smokers chronic obstructive lung disease
backgroundcurrent research gastrointestinal digestion milk casein strongly suggests existence novel bioactive peptides antiviral activities attributable immunostimulatory effects present study investigated antiviral activity casein peptides rich phosphate groups casein phosphopeptide cpp iii resultswe prepared two types cpp different phosphorylation levels clarify role phosphate group phosphorylation cpp iii conducted dry heating sodium pyrophosphate whereas dephosphorylation performed enzymatically using alkaline phosphatase alkaline treatment feline calicivirus fcv strain typical norovirus surrogate crandell rees feline kidney cells used target virus host cells respectively antiviral activity determined based dimethylthiazol diphenyltetrazolium bromide assay quantitative polymerase chain reaction quantification antiviral cytokine mrna expression higher cell viability observed host cells treated phosphorylated cpp iii significant regulation type interferon expression induced compared treated native cpp iii however dephosphorylation cpp iii resulted decrease anti fcv effect conclusionthe cpp effect enhanced introduction additional phosphates conversely weakened elimination therefore cpp iii phosphorylation represents emerging approach production food grade antiviral agents society chemical industry
extraction high molecular weight chromosomal dna yeast cells procedure performed frequently experiments involving polymerase chain reaction pcr southern blotting dna analysis techniques investigated several parameters affecting dna yield quality using simple chemical based purification procedure modelled alkaline lysis methods developed bacterial cells three major steps procedure cell lysis protein removal dna precipitation optimized testing impacts several chemicals including sodium dodecyl sulphate sds sodium hydroxide tris buffer sodium acetate potassium acetate parameters effect elevated temperatures cell lysis also investigated rapid optimized protocol derived purification dna small cell cultures readily digested restriction enzymes used template pcr average yield calculated approximately dna cells similar theoretical maximum amount obtainable haploid yeast cells copyright john wiley sons ltd
aim aim study evaluate proliferation chondrogenic differentiation human bone marrow mesenchymal stromal cells hbmscs cultured collagen biomaterials materials methods hbmscs seeded five different collagen col sponges types col cchs types col plus heparan sulphate ccchs types col plus chondroitin sulphate chs olh type col plus low molecular weight heparin cchs type col plus chs resulting constructs analyzed histological immunohistochemical staining molecular biology electron microscopy col released culture media measured dye binding method results hbmscs biomaterials cchs ccchs capacity attach proliferate synthesize col proteoglycans extracellular matrix ecm olh cchs presence aggrecan detected gene level total col liberated cells supernatants scaffold cultures detected level col ecm lower olh col highest cchs electron microscopy showed differently shaped cells rounded flattened constructs col fibers bundles observed ccchs transmission electron microscopy conclusions results show col col cchs ccchs biomaterials allowed cell proliferation chondrogenic like differentiation hbmscs early stage constructs cultured cchs ccchs showed better cartilage like phenotype ones
modern medicine pays great attention environmental security elimination adverse health effects due environmental factors end twentieth century environment became source urban industry induced threats air water microbe chemical pollution increased levels ionizing radiation high risk traumas essentially food important environmental factor also changed modern era due new agriculture technologies refining synthetic food additives influences ultra high ultra low temperatures gene engineering etc hand one important achievements modern medicine introduction functional foods maintenance homeostasis human metabolism current environmental conditions imbalance free radicals organism induced variety stresses dietary antioxidants one factors damaging human health bioantioxidants antioxidants naturally engaged metabolism special value medical purposes prevention treatment rehabilitation adverse effects related bioantioxidant deficiency generated accumulation products arising oxidation induced free radicals increased need bioantioxidants may emerge specific conditions stress exposure ionizing radiation xenobiotics another harmful man made factors environment much little physical activity due traumas rescue efforts administration pharmaceuticals activating processes oxidation induced free radicals antibiotics narcotic non narcotic analgesics non steroid anti inflammatory preparations alcohol free dietary concentrate enoant developed national institute vine wine magarach represents practical approach use cabernet sauvignon grape prevention treatment various maladies experimental clinical studies shown curative preventive benefits enoant part methodology used catastrophe medicine may contribute achievement better effectiveness clinical goals complex treatment rehabilitation humans possessing impaired functions cardio respiratory system red blood cells antioxidant system lipid metabolism improving immunity lessening toxic side effects radiation pharmacotherapy data experiments clinical studies effects exerted enoant indicate criteria optimization medical technologies include sufficient daily dose concentrate absence individual negative reactions grape induced allergy
phosphatidylinositol kinase related protein kinases key regulators controlling wide range cellular events yeast tel mecddc complex atm atr atrip humans play pivotal roles dna replication dna damage signaling repair present first structural insight dimers mecddc tel using single particle electron microscopy kinases reveal head head dimer one major dimeric interface terminal heat named huntingtin elongation factor protein phosphatase yeast kinase tor repeat dimeric interface significantly distinct interface mtor complex dimer oligomerizes two spatially separate interfaces also observe different structural organizations kinase domains mec tel kinase domains mecddc dimer located close proximity however tel dimer fully separated providing potential access substrates kinase even dimeric form
thermotolerant bacterium paenibacillus thiaminolyticus ability produce extracellular mannanase isolated soil sample bacterium produced mannanase degrees culture conditions high level production mannanase optimized optimized medium wheat bran ammonium sulfate yeast extract peptone inoculated old culture culture incubated degrees resulting folds higher mannanase production optimum temperature enzyme activity crude enzyme degrees respectively enzyme demonstrated relative enzyme activity degrees hydrolytic activity crude enzymatic preparation assessed various agro residues thin layer chromatographic analysis showed enzyme activity saccharify heteromannans resulted production mixture manno oligosaccharides mos enzyme exhibited classic endo activity evaluate possible prebiotic potential mos thus obtained initial screening ability support growth probiotics carried pure culture method bifidobacterium lactobacillus responded positively addition enzymatically derived oligosaccharides numbers increased significantly international union biochemistry molecular biology inc
long term cardiac effects amiodarone resemble many aspects hypothyroidism anti arrhythmic potential amiodarone may therefore result drug induced local hypothyroid like condition investigate controversial issue compared gene expression profiles hearts rats treated amiodarone rats hypothyroidism wistar male rats assigned groups control systemic hypothyroidism hypothyroidism amiodarone treatment amiodarone day weeks electrocardiogram ecg recordings gene profiling dna microarray northern blotting carried amiodarone like hypothyroidism caused significant prolongation intervals ecgs microarray analysis genes left ventricular myocardium revealed significant similarity expression profiles hypothyroidism amiodarone gene expression profiles hypothyroidism amiodarone showed closer correlation top regulated regulated genes hypothyroidism total genes analyzed northern blots left ventricular myocardium showed parallel decrease mrnas myosin heavy chain mhc alpha parallel increase myosin heavy chain mhc beta hypothyroidism amiodarone liver pituitary contrast northern blots showed quite different changes transcripts representative responsive genes hypothyroidism amiodarone conclusion long term treatment amiodarone causes cardioselective hypothyroid like alterations gene expression profiles potent anti arrhythmic activity amiodarone may attributable part least unique transcriptional remodeling elsevier rights reserved
kynurenine pathway major route tryptophan catabolism animals fungi bacteria procaryotic enzyme preferentially reacts kynurenine eucaryotic kynureninases exhibit higher activity hydroxy kynurenine crystallography kynureninases pseudomonas fluorescens pfkyn homo sapiens hskyn shows active sites nearly identical except asn ser hskyn replaced trp thr gly pfkyn site directed mutagenesis hskyn shows residues least part responsible differences substrate specificity since triple mutant shows activity kynurenine hydroxykynurenine pfkyn strongly inhibited analogs proposed gem diolate intermediate dihydrokynurenine aminophenyl cysteine dioxide values low nanomolar range stopped flow kinetic experiments show transient quinonoid intermediate formed mixing decays ketimine quench experiments show anthranilate first product formed stoichiometric burst thus rate determining step steady state release second product ala beta benzoylalanine also good substrate pfkyn show burst benzoate formation indicating rate determining step substrate benzoate release hammett plot rate constants substituted beta benzoylalanines non linear suggesting carbonyl hydration rate determining electron donating groups beta gamma cleavage rate determining electron withdrawing groups article part special issue entitled pyridoxal phosphate enzymology elsevier rights reserved
background obesity multifactorial condition influenced genetics lifestyle environment objective investigated whether association validated genetic profile risk score obesity gprs obesity body mass index bmi waist circumference modified sleep characteristics design study included cross sectional data white european adults aged participating biobank interactions gprs obesity sleep characteristics sleep duration chronotype day napping shift work effects bmi investigated results beta values expressed change bmi per increase gprs obesity gprs obesity associated bmi beta significant interactions gprs obesity variety sleep characteristics relation bmi interaction participants slept daily effect gprs obesity bmi stronger beta respectively normal length sleepers beta similar pattern observed shift workers beta compared beta non shift workers night shift workers beta compared beta non night shift workers taking naps day beta compared beta never rarely naps self reported evening chronotype beta compared beta morning chronotype similar findings obtained using outcome conclusion study shows association genetic risk obesity phenotypic adiposity measures exacerbated adverse sleeping characteristics
ability adaptive immune system respond arbitrary pathogens stems broad diversity immune cell surface receptors diversity originates stochastic dna editing process vdj recombination acts surface receptor gene time new immune cell created stem cell analyzing cell receptor tcr sequence repertoires taken blood thymus mice different ages quantify changes vdj recombination process occur embryo young adult find rapid increase age number random insertions dramatic increase diversity blood accumulates thymic output time blood repertoires mixtures different statistical recombination processes unravel mixture statistics obtain picture time evolution early immune system sequence repertoire analysis also allows detect statistical impact selection output vdj recombination process effects find nearly identical thymus blood suggesting analysis mainly detects selection proper folding tcr receptor protein find selection weaker laboratory mice humans affect diversity repertoire
progressive growth spread tumour cells form metastases requires interaction healthy host cells endothelial cells fibroblasts cells mesenchymal origin immune cells taking part innate adaptive responses within tumour lesion entire body host cells interact tumour cells create dynamic tumour microenvironment healthy cells positively negatively influence growth spread tumour balance cellular homeostasis effect substances secrete tumour microenvironment determine whether tumour tendency grow disappear whether cells remain within lesion capable metastasis regions body intercellular interactions also determine tumour susceptibility radiation types cancer treatment may also rational explanation differences treatment outcomes metastases regress others progress response treatment method
although hedgehogs well known examples postglacial recolonisation specific processes shape population structures examined detailed sampling fast evolving genetic markers combination model based clustering methods study aims analyse impacts isolation within glacial refugia postglacial expansion population structure northern whitebreasted hedgehog erinaceus roumanicus also discusses role processes edges species distribution evolutionary history maternally inherited mitochondrial control region parentally inherited nuclear microsatellites used examine samples within central europe balkan peninsula adjacent islands bayesian coalescent inference neutrality tests proposed recent increase population size pronounced pattern population structure involved differentiation insular populations mediterranean sea population within contact zone europaeus central europe interspecies hybrid detected first time central europe low genetic diversity observed crete highest genetic distances among individuals found romania recent population post refugial area related balkan peninsula shows complex pattern pronounced subpopulations located mainly pannonian basin adriatic pontic coasts detailed analyses indicate parapatry peripatry may factors limit range expansion also strong microevolutionary forces may change genetic structure species present evidence showing population differentiation may occur glacial restriction range refugia also interglacial range expansion population differentiation balkan peninsula adjacent regions could ascribed diversification steppe forest biomes complicated geomorphology including pronounced geographic barriers carpathians
purpose previously identified mouse tarsh one cellular senescence related genes showed loss expression tarsh mrna four human lung cancer cell lines tarsh presumptive signal transduction molecule interacting nesh implicated roles lung cancer metastasis methods amplification complete orf encoding tarsh cdna done reverse transcription pcr northern blotting carried using tarsh cdna probes clarify relationship tarsh lung cancer quantified tarsh mrna expression human lung cancer cell lines primary non small cell lung cancers results first determined complete orf encoding cdna sequence expressed human lung northern hybridization analysis tarsh strongly expressed human lung expression tarsh mrna remarkably downregulated lung cancer cell lines examined furthermore tarsh expression significantly low tumor specimens compared expression corresponding non neoplastic lung tissue specimens conclusion cancer associated transcriptional inactivation tarsh suggests tarsh could used biomarker lung cancer development well molecular adjunct lung carcinogenesis human
inherent characteristics ims reduced measurement time seconds time scale sensitivity selectivity make technique ideal methodology enzyme reaction monitoring capability ims determination enzyme kinetics inhibition studies analysis substrate depletion product formation using microliters solution successfully demonstrated example acetylcholine hydrolysis catalyzed acetylcholinesterase ache inhibited neostigmine galanthamine michaelis menten lineweaver burk plots obtained enzyme catalyzed reaction without neostigmine galanthamine inhibition two different inhibitor concentrations typical plots competitive inhibitors obtained agreeing well previous results published literature ims procedure provided limit detection acetylcholine low ppm range precision analysis frequency analytical characteristics appropriate perform enzyme kinetic studies ims offers new efficient tool study enzyme reactions either high throughput screening tool hit discovery lead development drug discovery proposes indirectly perform enzymological studies elsevier rights reserved
study neurological disorders often presents significant challenges due inaccessibility human neuronal cells investigation advances cellular reprogramming techniques however provided new source human cells laboratory based research patient derived induced pluripotent stem cells ipscs robustly differentiated specific neural subtypes including dopaminergic inhibitory gabaergic motorneurons cortical neurons neurons utilized vitro studies elucidate molecular causes underpinning neurological disease although human ipsc derived neuronal models increasingly regarded useful tool cell biology number limitations including relatively early fetal stage differentiated cells mainly two dimensional simple nature vitro system furthermore clonal variation well described phenomenon ipsc lines order account robust baseline data multiple control lines necessary determine whether particular gene defect leads specific cellular phenotype last years patient derived neural cells proven useful addressing several mechanistic questions related central nervous system diseases including early onset neurological disorders childhood many studies report clinical utility human derived neural cells testing known drugs repurposing potential novel compounds gene therapies translated clinical reality ipscs derived neural cells therefore provide great promise potential gain insight treat early onset neurological disorders
high incidence esophageal cancer northeast india unique ethnic background dietary habits provide great opportunity study molecular genetics behind esophageal squamous cell carcinoma part region hypothesized addition currently known environmental risk factors esophageal cancer genetic epigenetic factors also involved esophageal carcinogenesis northeast india therefore study explored possible association two important cell cycle regulatory genes environmental risk factors risk esophageal carcinogenesis total newly diagnosed esophageal cancer cases along equal number age sex ethnicity matched controls included study methylation specific polymerase chain reaction used determine promoter methylation status single nucleotide polymorphism codon gene assessed polymerase chain reaction restriction fragment length polymorphism method aberrant methylation gene seen esophageal cancer cases hypermethylation gene found healthy controls pro pro genotype found risk genotype northeast india compared arg pro arg arg variant polymorphism significantly associated esophageal cancer risk study population three genetic models namely dominant model arg pro pro pro arg arg odds ratio confidence interval recessive model arg arg arg pro pro pro odds ratio confidence interval homozygous model pro pro arg arg odds ratio confidence interval however variant polymorphism statistically associated esophageal cancer risk heterozygous model pro pro arg pro case analysis based methylation variant polymorphism pro pro arg pro showed significant association esophageal cancer risk odds ratio confidence interval gene gene gene environment interaction using case approach revealed strong association methylation single nucleotide polymorphism environmental factors esophageal cancer risk cases methylation variant polymorphism pro pro arg pro along betel quid tobacco chewing habit odds ratio confidence interval conferred eightfold increased risk toward esophageal cancer development study reveals synergistic interaction epigenetic genetic environmental factors risk esophageal cancer high incidence region northeast india inactivation either majority esophageal cancer cases study suggests possible crosstalk important cell cycle genes
vascular smooth muscle cells vsmcs highly specialized cells regulate vascular tone participate vessel remodeling physiological pathological conditions unclear certain vascular pathologies involve one type vessel spare others objective compare proteomes normal human vsmc aorta human aortic smooth muscle cells haosmc umbilical artery human umbilical artery smooth muscle cells huasmc pulmonary artery hpasmc pulmonary artery vsmc patients pulmonary arterial hypertension pah smc proteomes vsmc compared dige proteins differentially expressed haosmc hpasmc differentially expressed huasmc haosmc hpasmc respectively fold change much proteins differentially expressed hpasmc pah smc fold change huasmc expressed increased amount alpha smooth muscle actin compared either hpasmc haosmc although statistically significant addition pah smc expressed decreased amount smooth muscle myosin heavy chain proliferation rate increased compared hpasmc thus supporting pah smc synthetic phenotype analysis ingenuity identified paxillin embryonic lethal abnormal vision drosophila like elavl molecules linked
quantification gene expression provides valuable information regarding response cells tissue stimuli often accomplished monitoring level messenger rna mrna transcribed particular protein although numerous methods commonly used monitor gene expression including northern blotting real time polymerase chain reaction rnase protection assay method drawbacks limitations capillary electrophoresis laser induced fluorescence lif reduce protocol time eliminate need radioactivity provide superior sensitivity dynamic range quantification rna addition lif used directly determine amount rna species present something difficult normally accomplished using current methods gene expression detected using fluorescently labeled riboprobe specific given rna species direct approach validated analyzing levels rna also used determine amount discoidin domain receptor mrna cardiac tissue elsevier inc rights reserved
group vitamins play important role human metabolism whose deficiencies associated variety disorders diseases certain microorganisms lactic acid bacteria lab shown capacities group vitamin production thus could potentially replace chemically synthesized vitamins food fortification potential probiotic strain named lactobacillus plantarum isolated raw cow milk study exhibits ability produce group vitamins complete genome sequencing performed gain insights genetic elements involved group vitamin production genome contains circular chromosome three circular plasmids two predicted linear plasmids also contains gene clusters biosynthesis riboflavin folate genome sequence provides basis elucidation molecular genetics probiotic functions facilitate applications starter cultures food industry elsevier rights reserved
gap junctions clusters intercellular channels associated embryonic development neural signaling innexins invertebrate gap junction proteins identified drosophila caenorhabditis report isolation characterization two novel members insect innexin family inx inx embryos silkworm bombyx mori germ band formation stage inx single copy gene one exon inx single copy gene four exons three introns predicted proteins show structural similarities innexin family members including four transmembrane domains two extracellular loops els one cytoplasmic loop typical conserved amino acids inx phylogenetically orthologous insect inx genes inx orthologous known innexin including inx interestingly northern blotting situ hybridization showed inx variously expressed across developmental stages various tissues high expression seen nervous system time embryogenesis contrast inx transiently expressed germ band formation stage embryogenesis specifically expressed ovary testis larval pupal stages isolation characterization novel genes form basis study functional events occur development neuronal communication mori published elsevier ltd
botryococcene biosynthesis thought resemble squalene metabolite essential sterol metabolism eukaryotes squalene arises initial condensation two molecules farnesyl diphosphate fpp form presqualene diphosphate pspp undergoes reductive rearrangement form squalene principle botryococcene could arise alternative rearrangement presqualene intermediate proposed similarities predicted botryococcene synthase would resemble squalene synthase hence isolated squalene synthase like genes botryococcus braunii race braunii harbor least one typical squalene synthase none three squalene synthase like ssl genes encodes botryococcene biosynthesis directly ssl catalyzes biosynthesis pspp ssl biosynthesis bisfarnesyl ether ssl appear able directly utilize fpp substrate however combinations synthase like enzymes mixed together vivo vitro robust botryococcene ssl ssl squalene biosynthesis ssl ssl observed findings unexpected squalene synthase ancient likely progenitor botryococcus triterpene synthases catalyzes two step reaction within single enzyme unit without intermediate release yet braunii activities appear separated evolved interdependently specialized triterpene oil production greater mya coexpression ssl ssl genes different configurations independent genes gene fusions targeted intracellular membranes also demonstrate potential engineering even greater efficiencies botryococcene biosynthesis
hydrogen peroxide acts signaling molecule modulating expression various genes plants however reference gene used gene expression analysis signaling still arbitrary reliable result obtained quantitative real time pcr qpcr highly depends accurate transcript normalization using stably expressed reference genes whereas inaccurate normalization could easily lead false conclusions report using genorm normfinder algorithms candidate reference genes evaluated compared root shoot tissues arabidopsis upon different doses results revealed experimental conditions three novel reference genes tip like ukn ubc identified validated suitable reference genes qpcr normalization root shoot tissues oxidative stress conclusion confirmed publicly available microarray data methyl viologen drought stress comparison single reference gene expression pattern zat modulated using tip like ukn ubc multiple reference gene similar previous reports using northern blotting thus proposed three reference genes might good candidates researchers include reference gene validation gene expression studies related oxidative stress
investigation complex dynamical systems like human metabolism requires comprehension important subsystems present paper deals energy supply chains subsystems metabolism molecular cellular individual levels form mathematical model ordinary differential equations show fundamental properties fourier techniques results supported transition system ordinary differential equations partial differential equation namely transport equation particular behavior supply chains dominant pull components discussed special focus lies role buffer compartments
complement system major pillar humoral innate immune system first line defense pathogens mediates early inflammatory response links different branches humoral cellular immunity disorders affecting exocrine pancreas acute pancreatitis potentially lead life threatening systemic inflammatory response aberrant activation complement coagulation cascades pancreatic proteases activate key effectors complement system turn drive local systemic inflammation beyond extent pancreas complement interaction covers complex pro anti inflammatory mechanisms day remain fully elucidated review provides comprehensive overview pathophysiological role complement diseases exocrine pancreas based existing experimental clinical data participation complement acute chronic pancreatitis addressed well role tumor immunology therapeutic strategies targeting complement diseases long proposed yet arrived clinical setting
accumulation hydrophobic bile acids liver contributes cholestatic liver injury inflammation induced excessive bile acids believed play crucial role however mechanisms bile acids triggered inflammatory response remain unclear recent studies highlighted effect nlrp inflammasome mediating liver inflammation fibrosis study first time showed chenodeoxycholic acid cdca major hydrophobic primary bile acid involved cholestatic liver injury could dose dependently induce nlrp inflammasome activation secretion pro inflammatory cytokine beta macrophages promoting ros production efflux mechanistically cdca triggered ros formation part tgr egfr downstream signaling including protein kinase extracellular regulated protein kinases jun terminal kinase pathways meanwhile cdca also induced atp release macrophages subsequently causes efflux via receptor furthermore vivo inhibition nlrp inflammasome caspase inhibitor dramatically decreased mature beta level liver tissue ameliorated liver fibrosis bile duct ligation bdl mouse model conclusion excessive cdca may represent endogenous danger signal activate nlrp inflammasome initiate liver inflammation cholestasis finding offers mechanistic basis ameliorate cholestatic liver fibrosis targeting inflammasome activation
advances dna sequencing technology increasingly common tractable informatically look genes interest genomic databases parasitic organisms infer cellular states assignment putative gene function based homology functionally characterized genes organisms though powerful relies implicit assumption functional homology orthology indicates conserved function eukaryotes reveal dazzling array cellular features structural organization suggesting concomitant diversity underlying molecular machinery significantly examples novel functions pre existing new paralogues uncommon examples undermine basic assumption functional homology especially parasitic protists often highly derived examine extent functional homology exists organisms spanning eukaryotic lineage comparing membrane trafficking proteins parasitic protists traditional model organisms direct functional evidence available find function indeed largely conserved orthologues albeit significant adaptation arising unique biological features within lineage elsevier rights reserved
biology microglia become subject intense study widely recognized crucial determinants normal pathologic brain functioning well studied animal models still strongly debated specifies accurately phenotype functioning microglia human brain study therefore isolated microglia postmortem human brain tissue corpus callosum frontal cortex ctx cells phenotyped panel typical microglia markers genes involved myeloid cell biology furthermore response pro anti inflammatory stimuli assessed microglia compared key human myeloid cell subsets including monocytes monocyte derived macrophages monocyte derived dendritic cells several commonly used microglial cell models protein mrna expression profiles partly differed microglia isolated frontal cortex clearly distinct myeloid subsets microglia responded pro lps poly anti inflammatory dexa methasone stimuli interestingly pro inflammatory responses differed microglia monocyte derived macrophages former responded strongly poly latter strongly lps furthermore defined large phenotypic discrepancy primary human microglia currently used microglial cell models cell lines conclusion delineated unique specific features discriminate human microglia myeloid subsets show currently used cellular models partly reflect phenotype primary human microglia
graduate medical students india taught biochemistry didactic lectures hardly get opportunity clarify doubts reinforce concepts learn lectures used combination teaching learning methods open book assignment followed group tutorials study efficacy improving learning outcome graduate medical students classified low group achievers based internal assessment marks regular teaching module topics vitamins enzymology students attempted open book assignment without peer consultation students participated group tutorials effects groups evaluated pre posttests end phase set mcqs gain group tutorials overall gain significantly higher low achievers compared groups high medium achievers obtained gain open book assignment group tutorials overall gain significantly higher gain obtained open book assignment group tutorials three groups three groups retained gain even week exercise hence optimal use novel methods open book assignment followed group tutorials revision exercises help strengthening concepts biochemistry oft neglected group low achievers graduate medical education international union biochemistry molecular biology
waterborne diseases emerged global health problems rapid sensitive detection environmental water samples great importance bacterial identification enumeration water samples significant helps maintain safe drinking water public consumption culture based methods laborious time consuming yield false positive results whereas viable nonculturable vbncs microorganisms recovered hence numerous methods developed rapid detection quantification waterborne pathogenic bacteria water rapid methods classified nucleic acid based immunology based biosensor based detection methods review summarizes principle current state rapid methods monitoring detection waterborne bacterial pathogens rapid methods outlined polymerase chain reaction pcr digital droplet pcr real time pcr multiplex pcr dna microarray next generation sequencing pyrosequencing illumina technology genomics fluorescence situ hybridization categorized nucleic acid based methods enzyme linked immunosorbent assay elisa immunofluorescence classified immunology based methods optical electrochemical mass based biosensors grouped biosensor based methods overall methods sensitive specific time effective important prevention diagnosis waterborne bacterial diseases
tremella fuciformis known edible macrofungus medicinal value widely cultivated china products distributed worldwide study novel bioconversion system established produce resveratrol blastospore fuciformis btf expression vector ptro contains coumarate coenzyme ligase gene resveratrol synthase gene transformed btf liac peg mediated transformation pcr southern blotting analysis verified successful integration exogenous genes genome btf hplc analysis confirmed two transformants convert coumaric acid resveratrol resveratrol dry weight within days study first report transformation expression resveratrol biosynthetic genes btf research significant step toward obtaining resveratrol producing fuciformis strains satisfy demand resveratrol market also expand category functional food
galectins potent adhesion growth regulatory effectors characteristic expression profiles understanding molecular basis gene regulation case requires detailed information copy number genes sequence promoter report reveals plasticity respect galectins species describe occurrence two gene constellation human galectin gal define current extent promoter sequence divergence interestingly cross species genome analyses also detected single copy display regulatory potential different extrapolations expression profiles precluded respective species pairs gal coding chromosomal vicinity found confined one gene whereas copy number variation also applied gal example rat gal teaches lesson presence multiple bands southern blotting despite single copy gene constellation attributable two pseudogenes documented copy number variability thus taken consideration studying regulation galectin genes species comparison species
background developed validated kinetic microplate hemolytic assay quantify classical alternative complement activity single dilution human plasma serum methods assay based monitoring hemolysis sensitized sheep uncoated rabbit red blood cells means well microplate reader activity calibrator evaluated reference healthy adults conversion hemolysis time percentage activity obtained using calibration curve plotted daily results linearity assay well interference hemolysis bilrubinemia lipemia assessed classical pathway within day day precision satisfactory regarding performance commercially available liposome immunoassay lia elisa patients hereditary acquired complement deficiencies detected activity measured also provided reference range obtained blood donors agreement evaluated samples patients lia elisa sensitivity assay better lia cost lower either lia elisa addition assay less time consuming previously reported conclusions assay allows simultaneous measurement samples duplicate per run well plate use daily calibration curve allows standardization method leads good reproducibility technique also adapted quantification alternative pathway activity
background csf pcr standard diagnostic technique used resource rich settings detect pathogens cns infection however currently used routine csf testing china knowledge cns opportunistic infections among people living hiv china limited methods intensive cerebrospiral fluid csf testing performed evaluate bacterial viral fungal etiologies pathogen specific primers used detect dna cytomegalovirus cmv herpes simplex virus hsv varicella zoster virus vzv epstein barr virus ebv human herpesvirus hhv john cunningham virus jcv via real time polymerase chain reaction pcr results cryptococcal meningitis accounted causes meningitis toxoplasma gondii samples sent viral pcr positive cmv vzv ebv hhv jcv patient positive hsv pathogen based treatment high gcs score tended lower mortality rate whereas patients multiple pathogens infection seizures intracranial hypertension showed higher odds death conclusion cns ois frequent multiple pathogens often coexist csf cryptococcal meningitis prevalent cns disorders among aids utility molecular diagnostics pathogen identification combined knowledge provided investigation may improve diagnosis aids related ois resource limited developing countries cost efficacy remains evaluated
low phosphorus availability major constraint growth production vegetable soybean improve efficiency vegetable soybean rice oryza sativa phosphate transporter gene ospt transferred vegetable soybean cultivar using agrobacterium mediated cotyledonary node transformation system ospt driven constitutive cauliflower mosaic virus camv promoter binary vector pcambia ospt two independent fertile transgenic plants obtained confirmed pcr southern blotting analyses overexpression ospt gene transgenic plants detected quantitative pcr analysis tolerance transgenic lines overexpressing ospt low concentrations phosphate low evaluated hydroponic culture using modified hoagland nutrient solution contents leaves stems roots transgenic plants significantly higher non transformed plants concentrations low normal standard hoagland nutrient solution low stress transgenic plants grew better exhibited significant increases plant height root length root weight number pods seeds seed weight per plant compared plants data indicate overexpression ospt transgenic vegetable soybean lines improves accumulation growth performance thereby represents promising approach improvement efficiency vegetable soybean elsevier rights reserved
major dietary flavonol quercetin shown improve endothelial function decrease blood pressure extensively metabolized absorption study examined relative abilities quercetin human metabolites modulate expression enos involved regulating endothelial homeostasis quercetin aglycone significantly reduced enos protein gene expression huvec mirroring effects pro inflammatory cytokine tnf alpha presence tnf alpha aglycone caused reductions enos whereas metabolites without effect either tnf alpha stimulated unstimulated cells expression significantly reduced quercetin tnf alpha stimulated unstimulated huvecs metabolites effect expression exception quercetin sulfate caused moderate increase tnf alpha stimulated cells results suggest metabolic transformation quercetin prevents causing potentially deleterious decrease enos endothelial cells
suggest colour polymorphic study systems underutilized answer general questions evolutionary processes morph frequency dynamics generations population divergence morph frequencies colour polymorphisms used study fundamental evolutionary processes like frequency dependent selection gene flow recombination correlational selection adaptive character combinations however many previous studies colour polymorphism often suffer weak connections population genetic theory argue much focus directed towards noticeable visual traits colour expense understanding evolutionary processes shaping genetic variation covariation associated polymorphisms general thus need specific evolutionary theory colour polymorphisms beyond general theory maintenance polymorphisms spatially temporally variable environments positive negative frequency dependent selection outline integrative research programme incorporating processes suggest fruitful avenues future investigations colour polymorphisms
replication human papillomavirus hpv double stranded dna genome accomplished two viral proteins concert host dna replication factors hpv dna replication established model eukaryotic dna replication potential target antiviral therapy assays measure transient replication hpv dna transfected cells developed rely plasmid carrying viral origin dna replication ori together expression vectors replication ori plasmid typically measured southern blotting pcr analysis newly replicated dna dpni digested dna several days post transfection although extremely valuable assays difficult perform high throughput quantitative manner describe modified version transient dna replication assay circumvents limitations incorporating firefly luciferase expression cassette cis ori replication ori plasmid results increased levels firefly luciferase activity accurately quantified normalized renilla luciferase expressed control plasmid thus obviating need dna extraction digestion analysis provide detailed protocol performing hpv type dna replication assay well plate format suitable small molecule screening determinations quantitative high throughput nature assay greatly facilitate study hpv dna replication identification inhibitors thereof
discosoma recombinant red fluorescent dsred protein latest member family fluorescent proteins holds great promise applications biotechnology cell biology however used rational engineering knowledge behavior dsred underlying mechanisms relating structural stability adsorption properties solid surfaces highly demanded physico chemical analysis performed study reveals interaction dsred sio surfaces lead complete protein denaturation adsorption dehydration nevertheless photoluminescence emission dehydrated dsred small droplets found slightly red shifted peaking measured contact angles droplets containing different concentration dsred proteins determine interaction hydrophilic one however larger contact angles larger dsred concentrations dsred protein behavior dependent respect contact angle measurements agreement previously reported studies index terms dsred proteins thin sio layers
osteosarcoma common form bone malignancy children adolescents class molecules known micrornas mirnas routinely associated development progression present study centered less well known mirna mirna mir role investigated levels mir examined tissue specimens patients adjacent normal tissues using reverse transcription quantitative polymerase chain reaction qpcr analysis addition expression levels mir examined three cell lines normal osteoblast cell line cell proliferation migration invasion assays performed establish correlation mir metastasis potential targets mir theoretically predicted one high scoring target rho associated kinase rock established direct target using qpcr western blot analyses pearson correlation analysis results indicated mir downregulated tissues patients cell lines secondly shown overexpression mir inversely correlated cell proliferation migration invasion also shown mir negatively regulated gene expression rock cell lines finally interaction mir rock established shown mir directly targeted rock conclusion mir found tumor suppressor suppression mir resulted elevation levels rock interaction mir rock may key progression furthermore mir rock may potential therapeutic targets treatment
background lake malawi cichlids represent one growing number vertebrate models used uncover genetic developmental basis trait diversity rapid evolutionary radiation resulted species share similar genomes differ markedly phenotypes including brains behavior nuptial coloration craniofacial skeleton research begun identify genes well molecular developmental pathways underlie trait divergence results assemble compendium gene expression lake malawi cichlids across pharyngula phylotypic stage larval stages development encompassing hundreds gene transcripts chart patterns expression bone morphogenetic protein bmp fibroblast growth factor fgf hedgehog notch wingless wnt signaling pathways well genes involved neurogenesis calcium endocrine signaling stem cell biology numerous homeobox hox factors three planes using whole mount situ hybridization low sequence divergence across malawi cichlid assemblage probes employ broadly applicable hundreds species tabulate gene expression across general tissue domains highlight examples unexpected expression patterns conclusions heels recently published genomes compendium developmental gene expression lake malawi cichlids provides valuable resource interested relationship evolution development
non pathogenic gram positive soil bacterium streptomyces davawensis synthesizes riboflavin vitamin analogs roseoflavin rof demethyl amino riboflavin compounds antibiotics notably number riboflavin analogs currently investigation regard development novel antiinfectives first step towards understanding metabolism riboflavin analogs humans key enzymes flavokinase fad synthetase studied human flavokinase efficiently converted rof roseoflavin mononucleotide rofmn demethyl amino riboflavin mononucleotide afmn respectively human fad synthetase accepted rofmn afmn substrate consequently roseoflavin adenine dinucleotide rofad synthesized latter enzyme demethyl amino riboflavin adenine dinucleotide afad cofactor analogs rofmn afmn rofad different physicochemical properties compared fmn fad thus cofactor analogs potential render flavoenzymes inactive may negatively affect human metabolism rof found inhibit human flavokinase summary suggest lower toxic potential may better suited lead structure develop antimicrobial compounds elsevier inc rights reserved
multidrug resistance gene mdr encodes glycoprotein plays pathophysiological role development autoimmune diseases including systemic lupus erythematosus sle herein aimed investigate relationship mdr gene polymorphisms sle susceptibility chinese guangxi population genotypes mdr gene analyzed using polymerase chain reaction restriction fragment length polymorphism method sle patients healthy controls guangxi direct sequencing method used verify results binary logistic regression analyses adjusting gender age indicated subjects carrying allele genotype increased risk sle compared carriers allele genotype adjusted ors respectively addition risk allele recessive effect subgroup analyses revealed effect modification age presence allele yielding significant positive association sle older years subjects allele genotype first time demonstrated mdr polymorphisms associated sle susceptibility chinese guangxi population
dupuytren disease chronic disease elderly assuming life expectancy increase considerably coming decades dupuytren disease gain medical socioeconomic relevance addition well known familial genetic causes environmental factors nicotine diabetes alcohol trauma work discussed knowledge factors influence onset severity disease important diagnosis therapy prevention disease
large group small rab gtpases mediate secretory endosomal membrane transport well autophagosome biogenesis essential components vesicle trafficking machinery specific rab protein together cognate effectors coordinates dynamics trafficking pathway determines cargo proteins destination functional impairments rab proteins mutations post translational modifications disrupting regulatory network vesicle trafficking implicated tumorigenesis therefore vesicle transport regulators play essential roles mediation cancer cell biology including uncontrolled cell growth invasion metastasis context dependent role rab act either oncoprotein tumor suppressor different cancers found discrepancies may due part interaction specific rab protein different effectors cargos various tumors review recent advances roles rab gtpases communicating effectors tumor progression review also emphasize dysregulation rab mediated membrane delivery shifting normal cell behaviors toward malignancy thus recovery dysregulated vesicle trafficking systems cancer cells may provide future directions potential strategy restrain tumor progression
domestic dogs ancient origin long history africa nevertheless timing sources introduction africa remain enigmatic herein analyse variation mitochondrial dna mtdna loop sequences nigerian kenyan village dogs plus published sequences dogs parts africa europe west asia kenyan dogs assigned one three haplogroups matrilines clades nigerian dogs assigned one four haplogroups none african dogs exhibits matrilineal contribution african wolf canis lupus lupaster genetic signal recent demographic expansion detected nigerian dogs west africa analyses mitochondrial genomes reveal maternal genetic link modern west african north european dogs indicated sub haplogroup entire haplogroup coalescing around years ago incorporating molecular anthropological evidence propose sub haplogroup west african dogs could traced back late glacial dispersals potentially associated human hunter gatherer migration southwestern europe copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
higher plants participate biosynthesis many important secondary metabolites reported first time isolation new cytochrome cdna expressed stem specific manner camptotheca acuminata designated cass native medicinal plant species china using race pcr full length cdna cass long containing open reading frame orf encoding polypeptide amino acids bioinformatic analysis revealed cass contained heme binding domain pfgxgrrxcx showed homology plant cytochrome monooxygenases hydroxylases southern blotting analysis revealed one copy cass present genome camptotheca acuminata northern blotting analysis revealed cass expressed tissue specific manner highly stem lowly root leaf flower study suggests cass likely involved phenylpropanoid pathway
purpose review review prevalence clinical features imaging findings cytogenetics risks outcomes choroidal nevus recent findings choroidal nevus benign melanocytic tumor often discovered incidentally ophthalmic examination lesion generally well circumscribed pigmented prevalence choroidal nevus postequatorial region united states adults years old approximately choroidal nevus associated higher lifetime unopposed estrogen greater bmi population based evaluation mean nevus basal dimension approximately giant nevus basal dimension carries greater risk malignant transformation imaging modalities evaluation choroidal nevus include ultrasonography fundus autofluorescence optical coherence tomography oct fluorescein angiography occasionally employed detect multifocal pinpoint leaks choroidal neovascular membrane recently oct angiography demonstrated nevus minimal overlying macular microvascular changes compared melanoma cytogenetically gna gnaq mutations documented uveal melanoma cutaneous nevus subtypes mutations lead development melanoma rate one cases risk factors transformation nevus melanoma recalled mnemonic find small ocular melanoma using helpful hints daily representing thickness subretinal fluid symptoms flashes floaters blurred vision orange lipofuscin pigment margin less optic disk ultrasonographic hollowness halo absence drusen absence presence three risk factors implies chance transformation melanoma within years new online ocular oncology reading center help judge nevus risk summary choroidal nevus common intraocular lesion found predominantly whites mass carries small risk malignant transformation patients least three risk factors evaluated possible melanoma experienced ocular oncology center
ceramides synthesized six mammalian ceramide synthases cerss uses fatty acyl coas different chain lengths acylation sphingoid long chain base describe rapid reliable cers assay uses fluorescent nitrobenzo oxa diazol nbd sphinganine substrate followed separation nbd lipid substrate products using solid phase extraction spe chromatography spe chromatography quick reliable alternative tlc moreover degradation either nbd sphinganine nbd ceramide optimized assay use minimal amounts protein minimal volume assay prove useful analysis cers activity particular importance light growing involvement cers cell regulation pathology human diseases
aging associated significant changes hematopoiesis including clonal dominance anemia myeloid malignancies reduced activation signal transducer activator transcription stat previous studies stat deletion surprisingly amplified flt itd myeloid expansion myc driven lymphoid expansion show stat deficiency strong impact upon transcriptional heterogeneity single sorted kit lin sca kls cells kls long term repopulating hematopoietic stem cells hsc single cell polymerase chain reaction pcr performed selected regulators multi lineage hematopoiesis least two dominant sub populations identified increased expression cell cycle regulatory leukemia associated genes furthermore top expressing quartile cells majority genes proportionally overrepresented wildtype kls cells stat mrna levels also strongly correlated several genes since heterogeneity decreases age inflammatory oncogenic stress results provide potential mechanistic linkage stat expression
study aimed investigating genetic diversity panel candida africana strains recovered vaginal samples different countries fungal strains heterozygous mating type like locus belonged genotype candida albicans moreover examined africana strains lack acetylglucosamine assimilation sequence analysis hxk gene showed distinctive polymorphism impair utilization amino sugar yeast multi locus sequencing seven housekeeping genes revealed substantial genetic homogeneity among strains except campib sya vps loci contributed significantly classification set africana strains six existing diploid sequence types amplified fragment length polymorphism fingerprint analysis yielded greater genotypic heterogeneity among africana strains overall data reported show africana genetic diversity occurs existence intriguing group albicans strains specific phenotypes associated could useful future comparative studies order better understand genetics evolution important human pathogen
hybrids generally less fit parental species mechanisms underlying fitness reductions manifest different traits example hybrids physiological behavioral ecological defects defects generate reproductive isolation parental species however rate mechanisms postzygotic isolation hybrid sterility inviability evolve remained largely uninvestigated despite isolated studies showing behavioral defects hybrids possible might widespread study fundamental animal behavior ability individuals find food test rate breaks hybrids measured ability hybrids pairs drosophila species find food show ability decreases increasing genetic divergence parental species male hybrids strongly negatively affected females findings quantify rate hybrid dysfunction evolves across diverse radiation drosophila highlights need future investigations genetic neurological mechanisms affect hybrid ability find suitable substrate feed breed
phosphonates compounds contain chemically stable carbon phosphorus bond widely distributed amongst primitive life forms including many marine invertebrates constitute significant component dissolved organic phosphorus reservoir oceans virtually biogenic compounds synthesized pathway key step intramolecular rearrangement phosphoenolpyruvate phosphonopyruvate however bond cleavage degradative microorganisms catalyzed number enzymes lyases hydrolases others yet uncharacterized mechanism expression pathways phosphonate catabolism controlled ambient levels inorganic others independent report review enzymology bond metabolism bacteria also present results silico investigation distribution genes encode pathways responsible bacterial genomes marine metagenomic libraries likely modes regulation interrogation currently available whole genome bacterial sequences indicates contain genes encoding putative pathways phosphonate biosynthesis similar encode one pathways phosphonate catabolism analysis metagenomic data global ocean survey suggests respectively bacterial genomes across sites sampled encode pathways catabolic routes involving phosphonoacetate hydrolase lyase uncharacterized aminoethylphosphonate degradative sequence predominant likely substrate inducible repressible mechanisms involved regulation data present indicate likely importance phosphonate global biogeochemical cycling extension role marine productivity carbon nitrogen dynamics oceans
hydrogen sulfide presented textbooks toxic environmentally unacceptable species however positive effects human metabolism discovered last decades important offer students also new information compound didactic tool case may serve serial precipitation ions forming various colored sulfides bubblers chemically generated hydrogen sulfide stream experiment strong diverse color effect enhancing visual perception motivate students understand abstract complex information hydrogen sulfide also may helpful analytical chemistry courses conditional precipitation equilibrium teaching calculations
background hemophagocytic lymphohistiocytosis hlh serious immune disorder epstein barr virus ebv common trigger secondary hlh cell receptor tcr gene rearrangement detectable half patients ebv associated hlh using southern blotting conventional polymerase chain reaction pcr analyses however clinical significance unclear impact tcr gene clonality outcome patients ebv hlh evaluated using sensitive methods study used biomed multiplex pcr genescan analysis evaluate tcr gene rearrangement childhood ebv hlh methods six children ebv hlh enrolled study ebv load blood quantified real time pcr tcr gene rearrangement analyzed biomed multiplex pcr results patients showed monoclonal peaks tcr beta tcr gamma diagnosis serial monitoring one patient disclosed change rearrangement pattern tcr genes response immunochemotherapy conclusion findings suggest biomed multiplex pcr highly sensitive method detecting cell clonality useful predicting therapeutic response childhood ebv hlh elsevier rights reserved
background chromosome engineering encompasses collection homologous recombination based techniques employed modify genome model organism controlled fashion techniques widely used fundamental industrial research introduce multiple insertions escherichia coli strain date lambda red recombination also known recombineering phage transduction successfully implemented chromosome engineering techniques coli however due errors occur strain creation process reliable validation methods essential upon alteration strain chromosome results discussion polymerase chain reaction pcr based methods dna sequence analysis rapid powerful methods verify successful integration dna sequences chromosome even though verification methods necessary may sufficient detecting errors imposing requirement additional validation methods example extraneous insertions may occur recombineering highlight use southern blotting detect presence unwanted mutations removed via transducing region interest wild type chromosome using phages however one must verify lysate strains utilized free contamination temperate phages lysogenize inside cell large plasmid thus illustrate various methods probe temperate phage contamination including cross streak agar evans blue uranine ebu plate assays whereby latter newly reported technique purpose coli lastly discuss methodologies detecting defects cell growth shape characteristics employed additional check conclusion simple yet crucial validation techniques discussed used reliably verify chromosomally engineered coli strains errors non specific insertions chromosome temperate phage contamination defects growth cell shape techniques pcr dna sequence verification standardly performed illustrate necessity performing additional assays discussed techniques highly generic easily applied type chromosome engineering
purpose reviewthis review gives overview systems immunology single cell proteomic transcriptomic approaches applied study primary immunodeficiency also introduces recent advances multiparameter tissue imaging allows extensive immune phenotyping disease affected tissue recent findingsmass cytometry variation flow cytometry uses rare earth metal isotopes instead fluorophores tags bound antibodies allowing simultaneous measurement parameters per single cell mass cytomety enables comprehensive single cell immunophenotyping functional assessments capturing complexity immune system molecularly heterogeneous consequences primary immunodeficiency defects protein epitopes transcripts simultaneously detected allowing immunophenotype gene expression evaluation mixed cell populations multiplexed epitope imaging potential provide extensive phenotypic characterization subcellular level context tissue microenvironment summarymass cytometry multiplexed epitope imaging complement genetic methods diagnosis study pathogenesis primary immunodeficiencies ability understand effect specific defect across multiple immune cell types pathways affected tissues may provide new insight tissue specific disease pathogenesis evaluate effects therapeutic interventions
bluetongue virus btv member genus orbivirus within family reoviridae causes non contagious insect transmitted disease domestic wild ruminants mainly sheep occasionally cattle species deer virus infection trigger changes cellular microrna mirna expression profile play important post transcriptional regulatory roles gene expression greatly influence viral replication pathogenesis employed deep sequencing technology determine cellular mirnas differentially expressed primary sheep testicular cells infected btv total known mirnas novel mirna candidates differentially expressed btv infected uninfected cells identified predicted target genes annotated respectively nine differentially expressed mirnas mrna targets validated quantitative reverse transcription polymerase chain reaction targets prediction functional analysis regulated mirnas revealed significant enrichment several signaling pathways including mapk pik akt endocytosis hippo viral carcinogenesis foxo jak stat signaling pathways study provides valuable basis investigation roles mirnas btv replication pathogenesis elsevier rights reserved
beckwith wiedemann syndrome bws silver russell syndrome srs caused imprinting defects chromosome standard diagnostic tests syndromes include methylation analysis differential methylated regions kcnqot genes traditionally conducted southern blot analysis pcr based methods greatly improve turn around time test require less dna one newly emerging techniques snp genotyping mutation scanning high resolution melting hrm analysis shown also applicable methylation analysis tested methylation sensitive hrm analysis method detection methylation defects group bws srs patients known methylation status determined previously southern blotting well normal controls hrm analysis able detect methylation aberrations patients appeared sensitive southern blotting variation normal controls minimal presence snps amplified fragment influence outcome test conclude methylation sensitive hrm analysis robust fast sensitive cost effective method methylation analysis bws srs
cyanobacteria one principal sources volatile organic compounds vocs cause offensive taste odor drinking recreational water fish shellfish seafood although nontoxic humans compounds severely undermine public trust commodities resulting substantial costs treatment lost revenue drinking water aquaculture food beverage tourist hospitality industries mitigation control hindered complexity communities processes produce modify events making difficult source track major producer factors governing voc production fate past decade however advances bioinformatics enzymology applied detection technologies greatly enhanced understanding pathways enzymes genetic coding problematic vocs produced cyanobacteria led development tools rapid sensitive detection monitoring voc production source provided basis diagnostics endogenous exogenous controls review provides overview current knowledge major cyanobacterial vocs producers biochemistry genetics highlight current applications research needs area elsevier rights reserved
biotreatment feather wastes utilization degraded products feed foodstuffs challenge present study demonstrated degradation feather waste bacillus cereus dcuw strain isolated functional screening based microbial diversity study east calcutta wetland area high molecular weight keratinolytic protease feather degrading dcuw strain purified characterized moreover utilization degraded products feather hydrolysis developed demonstrated purified keratinolytic protease found show temperature optima degrees respectively pmsf found inhibit enzyme completely purified enzyme showed molecular weight kda sds page protease found broad range substrate specificities include keratin casein collagen fibrin bapna gelatin protease identified minor extracellular protease vpr pcr northern blotting techniques first report describing characterization minor extracellular protease vpr involvement feather degradation cereus group organisms
etiology highly myopic condition unclear decades investigated genetic contributions early onset high myopia eohm defined refraction less equal diopters age children less likely exposed high educational pressures trios two nonmyopic parents one child examined uncover pathogenic mutations using whole exome sequencing identified parent transmitted biallelic mutations novo mutations yet unknown reported genes probands interestingly increased rate novo mutations identified eohm patients among newly identified candidate genes bsg mutation identified one eohm proband expanded screening patients found additional four mutations gene generated bsg mutant mice elucidate functional impact gene observed typical myopic phenotypes including elongated axial length using trio based exonic screening study eohm deciphered prominent role novo mutations eohm patients without myopic parents discovery disease gene bsg provides insights myopic development etiology expands current understanding high myopia might useful future treatment prevention
increasing evidence suggests regular physical exercise suppresses chronic inflammation however potential inhibitory effects swimming dextran sulfate sodium dss induced chronic colitis underlying mechanisms remain unclear study rats orally administered dss induce chronic colitis subsequently treated without swimming exercise week swimming program hours per day days per week ameliorated dss caused colon shortening colon barrier disruption spleen enlargement serum ldh release reduction body weight gain swimming hours per day afforded greater protection hour per day swimming ameliorated dss induced decrease crypt depth increases myeloperoxidase activity infiltration lyg neutrophils tnf alpha ifn gamma expressing cells well fecal calprotectin lactoferrin swimming inhibited pro inflammatory cytokine chemokine production decreased protein expression phosphorylated nuclear factor kappa cyclooxygenase whereas elevated interleukin levels swimming impeded generation reactive oxygen species malondialdehyde nitric oxide however boosted glutathione levels total antioxidant capacity superoxide dismutase glutathione peroxidase activities additionally swimming decreased caspase activity expression apoptosis inducing factor cytochrome bax cleaved caspase increased bcl levels overall results suggest swimming exerts beneficial effects dss induced chronic colitis modulating inflammation oxidative stress apoptosis
seasonal variation removal efficiency antibiotic resistance genes args including tetracycline resistance genes tetg tetm tetx macrolide ermb ermf erea mefa investigated two typical swine wastewater treatment systems winter summer args class integron gene rrna gene quantified using real time polymerase chain reaction assays log variation args raw swine wastewater abundance args winter higher summer tetm tetx ermb ermf mefa highly abundant abundance args effectively reduced individual treatment process removal efficiencies args higher winter summer however examining relative abundance fate args quite variable anaerobic digestion reduced relative abundance tetx ermb ermf mefa lagoon treatment decreased tetm ermb ermf mefa sequencing batch reactor sbr decreased tetm ermb ermf biofilters wetlands display consistent removal efficiency args two sampling seasons far entire treatment system concerned ermb mefa effectively reduced winter summer total relative abundance relative abundances tetg erea significantly correlated inti tetg erea increased wastewater treatment may pose great threat public health
analysis effect drugs insulin aggregation interesting due influence human metabolism present method analyse effect antiretroviral drug azt insulin aggregation based principal components analysis infrared spectra recorded process method allows analysis conformational changes involved aggregation providing time value associated aggregates formation analysis performed using free insulin buffered solution concentration aggregation monitored situ ftir degrees dependence concentration azt considered contemplating three concentration levels azt interaction azt insulin proved hnmr spectroscopy aggregation states characterised solubility tests microscope imaging comparative analysis time aggregation led observing process delayed concentration azt lower accelerated equal higher concentrations dependence related concentration monomeric species medium analysis performed serum evaluate influence serum proteins phenomena concluding azt binds insulin serum proteins elsevier rights reserved
background objectivemalignant pleural effusion mpe affects mesothelioma patients research mpe focused physical impact breathlessness mpe rich growth mediators contribution tumour biology investigated aimed examine potential effects mpe promoting growth migration chemo resistance mesothelioma methodspleural fluid samples patients mesothelioma metastatic pleural cancer benign used seven validated human mesothelioma cell lines three primary cultured mesothelioma lines employed resultspleural fluid mesothelioma patients diluted consistently stimulated cell proliferation trypan blue cell viability assay five mesothelioma cell lines tested median fold controls fluid also induced cell migration median fold six mesothelioma cell lines using scratch wound assay murine flank model mesothelioma tumour infused daily instillations pleural fluid grew significantly faster saline controls median day addition mpe diluted culture media significantly protected mesothelioma cisplatin pemetrexed induced cell death three cell lines tested median fold reduction control growth effects matched pleural fluid cultured mesothelioma cells patients differ significantly unmatched pairs conclusionthis proof concept study reveals potent biological capabilities malignant pleural fluid mesothelioma pathobiology
hosts utilize different types defense effects parasitism including avoidance resistance tolerance typically tremendous heterogeneity among hosts defense mechanisms may rooted costs associated defense lead trade offs life history traits trade offs may also exist defense mechanisms relationships avoidance resistance tolerance rarely studied assessed three defense traits common garden conditions natural host parasite system trematode eye fluke diplostomum pseudospathaceum second intermediate fish host looked host individuals originating four genetically distinct populations two closely related salmonid species atlantic salmon salmo salar sea trout salmo trutta trutta estimate magnitude variation defense traits relationships among show species specific variation resistance tolerance population specific variation resistance demonstrate evidence trade resistance tolerance results suggest variation host defense least partly result compromise different interacting defense traits relative importance likely shaped environmental components overall study emphasizes importance considering different components host defense system making predictions outcome host parasite interactions
aim review give general view current status scientific basis role copper human health disease outlining roles copper human metabolism bioenergetics coordination chemistry well biological ligands involved multiple steps metal assimilation distribution copper bioavailability depends four main factors absorption copper gastrointestinal tract copper transport portal blood extraction copper hepatocytes portal blood supply copper uptake peripheral tissues central nervous system important copper pumps providing permeation pathway copper ions man hctr hctr dmt atpa atpb murr extensively discussed different theories putative role ceruloplasmin copper transport blood presented data interactions among trace elements copper level enterocyte systems body also shown finally function different drugs chelators non chelating agents utilized clinical practice therapy wilson disease treated particular reductive chelation penicillamine discussed elsevier rights reserved
porcine deltacoronavirus pdcov causes acute enteric disease mortality seronegative neonatal piglets previously demonstrated pdcov infection suppresses production interferon beta ifn beta detailed mechanisms poorly understood demonstrate nonstructural protein nsp pdcov like protease significantly inhibits sendai virus sev induced ifn beta production targeting kappa essential modulator nemo confirmed diminished function nemo cleaved pdcov pdcov nsp cleavage site nemo protein identified glutamine identical porcine epidemic diarrhea virus nsp cleavage site revealing likelihood common target nemo coronaviruses furthermore cleavage impaired ability nemo activate ifn response downstream signaling taken together findings reveal pdcov nsp newly identified ifn antagonist enhance understanding immune evasion deltacoronaviruses
purpose review review seeks describe role asialoglycoprotein receptor asgr modulating non hdl lipoprotein levels platelet numbers atherosclerosis recent findings genetics studies revealed asgr haplodeficiency provides protection atherosclerosis potential interactions asgr ldl receptor may regulate rate ldl uptake result may lower plasma non hdl cholesterol asgr clears senescent platelets induces expression hepatic thrombopoietin platelet activity promotes plaque formation atherosclerosis summary asgr multifunctional receptor specializing clearance desialylated glycoproteins platelets impact asgr levels plasma non hdl cholesterol makes potential therapeutic target treatment hypercholesterolemia atherosclerosis
macroautophagy hereafter autophagy catabolic cellular self eating process unwanted organelles proteins delivered lysosomes degradation autophagosomes although role autophagy cancer shown context dependent role autophagy tumor cell survival attracted great interest targeting autophagy cancer therapy one family potential autophagy blockers quinoline derived antimalarial family including chloroquine however molecular basis tumor cell response remains poorly understood show squamous cell carcinoma cells melanoma tumor cells induced activation expression target genes hif bcl bcl accumulation autophagosomes jnk signaling activation increased gene expression either genetic knockdown inhibition sensitized tumor cells resulting increased apoptotic cell death following treatment findings provide new molecular insights response tumor cells resistance cancer therapy findings may facilitate development improved therapeutic strategies targeting pathway
retinal pigmented epithelium rpe outermost layer retina key role maintaining retinal cells functions severity culture rpe cells exerted many limitations vitro vivo studies therapeutic applications therefore establishment rpe cell lines high proliferative potential considerably improve study rpe cell biology report generation spontaneously immortalized murine rpe cell line primary mouse rpe cell culture founded colonized cells picked expression rpe retinal progenitor cells rpc markers studied using immunocytochemistry icc emerged cells cultured passages population doubling times different serum concentrations calculated also investigated ability cells becoming transfected calcium phosphate method becoming infected adeno associated virus serotype aav using flow cytometry data showed cobblestone constituent cells expressed rpe cytokeratin moreover several progenitor markers pax sox nestin chx revealed despite primary rpe cells newly emerged cells easily transfectable highly infectable compared hekt cells data indicated emerged mouse rpe cell line pretended rpc like phenotype also simultaneously expressed rpe markers would promising model leading studies rpe rpc cells substantially confirmed great rpe plasticity invaluable potential research studies elsevier inc rights reserved
infection epstein barr virus ebv usually leads latent state lymphocytes virus reactivated two viral transactivators zta rta leading cascade gene expression ebv dna array generated analyze pattern transcription entire ebv genome various conditions firstly complete set temporal expression clusters ebv genes displayed analyzing array data anti igg induced akata cells addition assigning genes unknown function various clusters increasing expression latent genes including ebna ebnaa ebna observed virus replication secondly gene expression independent viral dna replication analyzed paa blocked akata cells chemically induced raji cells several genes presumed late functions found expressed early kinetics independent vital dna replication suggesting possible novel functions genes finally ebv array used identify rta responsive gene expression raji cells ebv positive epithelial cells using zta sirna strategy array data confirmed northern blotting pcr reporter assays information thus provides better understanding control ebv lytic gene expression elsevier inc rights reserved
background psoriasis mediated helper cell inflammatory process study describes changes serum levels patients psoriasis vulgaris treated narrow band ultraviolet nbuvb methods serum levels compared control group nbuvb addition post nbuvb levels compared healthy controls psoriasis area severity score pasi body surface area scoring used evaluate severity disease results compared non psoriasis control group higher psoriasis patients respectively serum levels three interleukins strongly correlated severity disease although decreased nbuvb decline significant phototherapy compared controls continued remain elevated post phototherapy compared control group respectively conclusions serum levels decrease phototherapy psoriasis post phototherapy levels decrease non psoriasis controls study supports role helper cell specific cytokines psoriasis possible mechanism action nbuvb via inhibition cytokines
study cloned sequenced base pair polymorphic band phs tightly linked random amplified polymorphic dna marker opu converted sequence characterized amplified region scar marker referred rhs specific genome psathyrostachys huashanica genbank basic local alignment search tool search showed sequence phs primary sequence homology known sequences southern blotting confirmed result scar marker used detect genome chromatin wheat successfully amplified huashanica complete set wheat huashanica disomic addition lines undetermined homoeologous group addition lines scar marker powerful tool marker assisted selection huashanica chromosome wheat background also allow wheat breeders screen excellent traits found huashanica chromatin
detection exogenous plant micrornas human animal plasma sera lies foundation exploring cross kingdom regulatory functions necessary establish standard operation procedure promote study nascent field study plant mirnas assessed watermelon juice mixed fruits quantitative reverse transcriptase polymerase chain reaction qrt pcr values template controls standard curves mirna used evaluate specificity sensitivity qrt pcr obtain concentrations sixteen mirnas selected measured human plasma volunteers drinking juice values plant mirnas human plasma fell outside linear ranges standard curves remaining mirnas present high basal levels showed dynamic physiological pattern plasma absorption rates northern blotting used confirm qrt pcr results critical issues rna extraction internal controls also addressed authors published elsevier inc open access article license
intensification human activities fresh water resources increasingly exposed contamination effluent disposal land thus greater need identify sources pathways water contamination enable development better mitigation strategies track discharges domestic effluent soil groundwater synthetic double stranded dna dsdna tracers developed study laboratory column experiment field groundwater soil lysimeter studies carried spiking dna oxidation pond domestic effluent selected dna tracers compared non reactive bromide tracer respect relative mass recoveries speeds travel dispersions using method temporal moments intact stony soil gravel aquifer media dsdna tracers typically showed earlier breakthrough less dispersion tracer underwent mass reduction suggests dsdna tracers predominantly transported network larger pores preferential flow paths effluent tracking experiments soil groundwater demonstrated dsdna tracerswere readily detectable effluent contaminated soil groundwater using quantitative polymerase chain reaction dna tracer spiked effluent quantities detected groundwater mdown gradient concentration orders magnitude detection limit anticipated could detected far greater distances findings suggest synthetic dsdna tracers promising tracking effluent discharges soils groundwater studies needed investigate dna effluent interaction impact subsurface environmental conditions ondna attenuation validation synthetic dsdna tracers especially multiple dna tracers used concurrently effective new tool track effluent discharge soils groundwater providing spatial estimation presence absence contamination sources pathways elsevier rights reserved
obvious need diagnose hepatocellular carcinoma using novel non invasive sensitive biomarkers regard aim study evaluate correlate relative quantification microrna using quantitative real time polymerase chain reaction quantitative analysis selenoprotein using enzyme linked immunosorbent assay sera hepatocellular carcinoma patients chronic liver disease patients well normal healthy subjects order establish new diagnostic biomarker valid non invasive technique addition study aimed investigate whether changes selenium supply affect microrna expression selenoprotein levels human hepatocarcinoma cell line hepg results showed highly significant decrease serum microrna relative quantification values selenoprotein levels malignant group comparison benign control groups best cutoff serum microrna selenoprotein discriminate hepatocellular carcinoma group benign control groups respectively furthermore study showed changes selenium supply hepg cell line alter microrna profile paralleled changes concentration target protein selenoprotein hence serum microrna selenoprotein appear potential non invasive diagnostic markers hepatocellular carcinoma moreover results suggest selenium could used anticancer therapy hepatocellular carcinoma affecting microrna selenoprotein
soybean seed oil typically contains oleic acid increasing content oleic acid beneficial health biodiesel production mutations fad genes reported increase seed oleic acid content subset mutant families mutagenized soybean cultivar forrest population screened using reverse genetics tilling identify mutations within fad genes although fad mutants identified using gel based tilling four fad one fad mutants identified high seed oleic acid content using forward genetic screening subsequent target sequencing tilling successfully used non transgenic reverse genetic approach identify mutations genes controlling important agronomic traits however technique presents limitations traits oil composition due gene copy number similarities within soybean genome soybean fad present two copies fad fad two fad members fad fad three fad members fad fad fad reported syntenic phylogenetic silico analysis revealed two additional members constituting fad gene family gmfad gmfad located chromosomes respectively presumed diverged fad members localized chromosomes gmfad gmfad gmfad work discusses alternative solutions limitations gel based tilling functional genomics due high copy number multiple paralogs fad gene family soybean
understanding historical current environmental suitability human impacts affect genetic diversity large scale essential species management planning however studies conservation genetics carried local regional scale rarely broad spatial scales entire biome evaluated relative contribution historical current environmental suitability current landscape features human impacts explain genetic diversity allelic richness inbreeding variation among populations using euterpe edulis atlantic forest model system fitted linear mixed models within multiple competing hypotheses approach model selection based akaike information criteria showed overall genetic diversity lower sites absence large seed dispersers higher sites historically stable climate seedling adults showed negatively influenced human impact factors adults mainly affected reduction forest cover seedlings loss large seed dispersers thus current pattern genetic diversity edulis result historical instability mid holocene recent anthropogenic impacts mainly affect important ecological process seed dispersal thus efficient plan species conservation must account human impacts environmental suitability also assess genetic diversity seedlings adults fragmented landscapes
major advances knowledge cancer biology interactions tumor immune environment led emergence last five years new immunotherapy based treatment strategies cancer patients time improvement radiation technique progress radiobiology allowed last decade expand applications radiotherapy growing number settings present strong theoretical basis propose immune enhanced radiation therapy may represent future new paradigm treatment combining intrinsic power radiotherapy elicit specific systemic tumor directed immune response modern highly conformal precise dose delivery order maximize response major site disease obtain durable disease control aim review describe principal mechanisms immune modulation response radiation investigational strategies harness potential radiation inducible immune response radiation therapy expected local treatment cornerstone multimodal strategy might achieve long lasting tumor remission primary site systemic efficacy metastatic lesions elsevier rights reserved
objective limited data regarding xpert performance detect group streptococcus gbs hiv infected pregnant women evaluated accuracy rapid real time polymerase chain reaction pcr test cohort hiv infected women methods weeks pregnancy pair combined rectovaginal swabs collected two gbs assays cohort sequentially included hiv infected women rio janeiro culture real time pcr assay genexpert gbs cepheid sunnyvale using culture reference sensitivity specificity positive negative likelihood ratios estimated results june february pregnant women met inclusion criteria one woman later excluded due failure obtain result index test included analyses gbs colonization rate sensitivity specificity genexpert gbs assay respectively positive negative predictive values respectively conclusions genexpert gbs acceptable test identification gbs colonization hiv infected pregnant women represents reasonable option detect gbs colonization settings culture feasible
pcd programmed cell death important mechanism development homeostasis disease analyze gene expression pattern brain cells undergoing pcd response serum deprivation analyzed cdna microarray consisting genes housekeeping genes cortical cells derived mouse embryonic brain cortical cells induced apoptosis serum deprivation hours identified regulated genes regulated genes apoptotic cells based cdna microarray data four genes selected analyzed pcr northern blotting characterize role unc like kinase ulk gene pcd investigated cell death effect ulk examined expression several genes related pcd especially gapdh increased ulk theses findings indicated ulk involved apoptosis pathway
super resolution microscopy term commonly given fluorescence microscopy techniques resolutions limited diffraction light since conception little decade ago techniques quickly become method choice many biologists studying structures processes single cells nanoscale review present three main approaches used tackle diffraction barrier similar stimulated emission depletion sted microscopy structured illumination microscopy sim single molecule localization microscopy smlm first present theoretical overview techniques underlying physics followed practical guide facets involved designing super resolution experiment including approachable explanation photochemistry involved labeling methods available sample preparation procedures finally highlight exciting recent applications developments techniques discuss outlook field
tumor microenvironment consists immunosuppressive niche created complex interactions cancer cells surrounding stromal cells critical component environment myeloid derived suppressor cells mdscs heterogeneous group immature myeloid cells arrested different stages differentiation expanded response variety tumor factors mdscs exert diverse effects modulating interactions immune effector cells malignant cells increased presence mdscs associated tumor progression poorer outcomes decreased effectiveness immunotherapeutic strategies article review current understanding mechanisms underlie mdsc expansion immune suppressive function finally review preclinical studies clinical trials attempted target mdscs order improve responses cancer therapies
background klf gene could indirectly modify gamma globin chain production hence level fetal hemoglobin hbf ameliorating phenotype beta hemoglobinopathies response hydroxycarbamide hydroxyurea therapy study aimed evaluate frequency different genotypes klf gene beta thalassemia major beta thalassemia intermedia sickle cell disease scd patients polymerase chain reaction assess relation disease phenotypes response methods cross sectional study included patients scd patients stable dose relation klf gene polymorphism tieg tieg egr alpha phenotype studied baseline mean corpuscular volume hbf transfusion history whereas evaluation response therapy carried clinically laboratory results frequency mutant klf genotype mutant allele significantly higher among patients compared scd patients homozygous scd patients wild type allele within klf gene significantly lower transfusion frequency percentage responders nonresponders different klf polymorphic genotypes among scd patients comparable conclusions although klf gene play standalone role hbf modifier data support importance ameliorating phenotype among beta hemoglobinopathies
inflammation local response infection tissue damage mediated activated macrophages monocytes immune cells release cytokines mediators inflammation long time humoral cellular mechanisms studied role regulating immune response recent advances field immunology neuroscience also unraveled specific neural mechanisms interesting therapeutic potential called cholinergic anti inflammatory pathway cap described control innate immune responses inflammation potent manner early tracey collaborators developed technique stimulates vagus nerve mimics effect pathway methodology based electrical stimulation vagus nerve low voltage frequency order avoid side effects overstimulation deregulation heart rate variability electrical devices stimulation available making easy set methodology laboratory goal research investigate potential involvement prostaglandins cap unfortunately based earlier attempts failed use original protocol induced inflammatory response either high suitable enzymatic metabolism properties different settings original surgery protocol remained mostly unchanged conditions regarding inflammatory induction time point sacrifice improved fit purposes investigate involvement cap limited inflammatory responses modified version original protocol presented includes longer time range vagus nerve stimulation analysis associated lower induction inflammatory responses additionally decreasing level lipopolysaccharides lps inject also came across new observations regarding mechanistic properties spleen
objective endothelial activation implicated atherogenesis diabetes role peroxisome proliferator activated receptor delta ppar delta endothelial activation remains poorly understood study investigated anti inflammatory effect ppar delta mechanism involved methods results human umbilical vein endothelial cells huvecs synthetic ppar delta ligands significantly inhibited tumor necrosis factor tnf alpha induced expression vascular cell adhesion molecule selectin assayed real time pcr northern blotting well ensuing endothelial leukocyte adhesion activation ppar delta upregulated expression antioxidant genes superoxide dismutase catalase thioredoxin decreased reactive oxygen species production ecs chromatin immunoprecipitation assays showed switched association bcl transcription repressor ppar delta vascular cell adhesion molecule vcam promoter small interfering rna reduced endogenous ppar delta expression potentiated suppressive effect activation suggests nonliganded ppar delta may opposite effect conclusions demonstrated ligand activation ppar delta ecs potent antiinflammatory effect probably via binary mechanism involving induction antioxidative genes release nuclear corepressors ppar delta agonists may potential treating inflammatory diseases atherosclerosis diabetes
aims massive gastric polyposis rare entity often associated juvenile polyposis syndrome jps aim study evaluate clinicopathological features patients abundant gastric juvenile type hyperplastic like polyps methods results study included males females median age years range years fourteen patients carried diagnosis jps three prior gastrointestinal adenocarcinomas patients without known jps presented older median age years versus years clinical symptoms included nausea vomiting abdominal pain patients asymptomatic eighteen cases showed complete near complete carpeting gastric mucosa innumerable polyps ranging millimetres similar polyps formed long bulbous projections characteristic histological features including smooth outer contour prominent stromal oedema widely spaced often cystically dilated glands lined foveolar epithelium polyps less stroma hyperplastic foveolar epithelium normal underlying adjacent mucosa four cases harboured adenocarcinoma seven others showed dysplasia smad immunohistochemical staining showed patchy loss polyps cases tested five six patients tested germline smad mutation conclusions massive gastric juvenile type polyposis occur patients without known jps may mimic different conditions polyposis syndromes menetrier disease pathologists play important role disease classification patients lack family personal history jps colonic polyps may harbour diagnostic germline mutations
calcium carbonate skeletal tissues metazoans comprise small quantity occluded organic macromolecules mostly proteins polysaccharides constitute skeletal matrix functions modulating biomineralization process well known skeletal matrix extensively studied successively via classical biochemical approaches via molecular biology recent years via transcriptomics proteomics optimistic view deposition calcium carbonate minerals requires limited number macromolecules challenged last decade high throughput approaches approaches made possible rapid identification large sets mineral associated proteins skeletal repertoires skeletomes several calcifying animal models ranging sponges echinoderms one consequences expanding set data simple definition skeletal matrix longer possible increase available data however makes easier compare skeletal repertoires shedding light fundamental evolutionary mechanisms affecting matrix components elsevier inc rights reserved
synergistic effects multiple plant secondary metabolites upper trophic levels constitute underexplored potentially widespread component coevolution ecological interactions examples plant secondary metabolites acting synergistically insect deterrents common many studies focus pharmaceutical applications natural products activity serendipitous evolved response review summarizes systems ideal testing synergistic plant defenses utilizes focused meta analysis examine studies tested effects multiple compounds insects due dearth ecological synergy studies one patterns synergy able report meta analysis phytochemical mixtures larger overall effect generalist herbivores specialist herbivores recommend focus synergy chemical ecology programs suggest future hypothesis tests methods approaches focused techniques molecular biology examine mechanisms cellular level rather recommend uncovering existence synergy first combining best methods organic synthesis isolation chemical ecology bioassays quantitative analyses data generated recommended methods provide rigorous tests important hypotheses intraclass interclass compounds act synergistically deter insects disrupt immune response ultimately contribute diversification synergy research also contribute determining antiherbivore synergy widespread among plant secondary metabolites would consistent hypothesis synergistic defenses key attribute evolved diverse chemical mixtures found plants
background human flap endonuclease prototypical nuclease removes flaps incising one nucleotide duplex dna using double nucleotide unpairing mechanism results alteration hfen helical cap structure removal conserved basic residues prevents substrate unpairing conclusion hfen helical cap required substrate rearrangement significance mechanistic details nuclease catalysis crucial understanding dna replication repair prototypical nuclease flap endonuclease fen catalyzes essential removal single stranded flaps dna replication repair fen hydrolyzes specific phosphodiester bond one nucleotide double stranded dna specificity arises double nucleotide unpairing places scissile phosphate diester active site divalent metal ions also related fen specificity helical arch flaps continuous dnas thread arch contains basic residues lys arg human fen hfen conserved nucleases cap region present enzymes process dnas termini proline mutations introduced hfen helical arch mutation severely detrimental reaction however proteins least stable wild type hfen bound substrate comparable affinity moreover mutants produced complexes biotinylated substrate captured streptavidin resistant challenge competitor dna removal conserved basic residues detrimental reaction single mutation much less severe ability protein rearrange aminopurine containing substrates monitored low energy although retained ability unpair substrates cap mutants taken together data challenge current assumptions related nuclease family mechanism conserved basic amino acids required double nucleotide unpairing appear act cooperatively whereas helical cap plays unexpected role hfen substrate rearrangement
methicillin resistant staphylococcus aureus mrsa pathogen emerging hospitals well community livestock mrsa significant costly public health concern may enter human food chain contaminate milk dairy products causing foodborne illness study aimed determine occurrence characteristics mrsa isolated samples milk dairy products previous survey conducted southern italy overall aureus strains isolated mrsa characterized spa typing multi locus sequence typing sccmec typing staphylococcal enterotoxins ses genes panton valentine leukocidin pvl genes ability form biofilm frequently recovered sts followed isolates harboured sccmec type iva one isolate sccmec resulted detected three isolates carried one enterotoxin encoding genes one strain seg sei sem sen seo genes two strains seh gene isolated strains harboured pvl encoding genes molecular analysis icaa icad genes showed icaa icad positive icad gene one icaa icad negative detection mrsa food animal origin potential health hazard thus necessary monitoring food producing animals improving hygiene standards food practices order reduce microbiological risk minimum authors published elsevier ltd open access article license
fish seafood main contributors arsenic diet dominating arsenical organoarsenical arsenobetaine found particularly finfish algae blue mussels filter feeders contain less arsenosugars relatively inorganic arsenic ias whereas fatty fish contain arsenolipids compounds present smaller amounts seafood include trimethylarsine oxide tmao trimethylarsoniopropionate tmap dimethylarsenate dma methylarsenate sulfur containing arsenicals toxic carcinogenic arsenical ias biotransformed humans excreted urine carcinogens dimethylarsinate dma methylarsonate producing reactive intermediates process less known biotransformation organoarsenicals new insight indicates bioconversion arsenosugars arsenolipids seafood results urinary excretion dma possibly also producing reactive trivalent arsenic intermediates recent findings also indicate pre systematic metabolism colon microbiota play important role human metabolism arsenicals processing seafood may also result transformation arsenicals elsevier gmbh rights reserved
aim study investigate influence self assembling peptide nanofibre scaffolds sapns growth proliferation retinal neuronal differentiation stem progenitor cells scs derived ciliary pigment epithelium cpe human cadaveric eye sapns rada well described previous studies commercially available xeno free cpe cells isolated cultured dmem supplemented growth factors basic fibroblast growth factor epidermal growth factor encapsulated scaffolds entrapped scs actively expanded formed clone like clusters scaffolds many cells cluster proliferating revealed bromo deoxyuridine uptake could maintained days expressed neural progenitor markers beta iii tubulin nestin pax musashi upon differentiation cells conditioned medium cells exhibited retinal neuronal markers opsin rhodopsin recoverin profiler polymerase chain reaction array experiments showed selective gene expression possibly involved neural stem progenitor cell adhesion differentiation findings suggest suitability three dimensional culture system proliferation maintenance cpe stem progenitor cells cpe possible use vivo studies small molecules drug deliveries retinal diseases use combination directed stem progenitor cell differentiation ultimately tissue replacement therapies copyright john wiley sons ltd
introduction regulatory cells treg play important role suppressing anti immunity depletion linked improved outcomes better understand role treg limiting efficacy anti cancer immunity used diphtheria toxin dtx transgenic mouse model specifically target deplete treg methods tumor bearing balb foxp dtr transgenic mice subjected different treatment protocols without treg depletion tumor growth survival monitored results dtx specifically depleted treg transient dose dependent manner treg depletion correlated delayed tumor growth increased effector cell teff activation enhanced survival range solid tumors tumor regression dependent teffs depletion cells completely abrogated survival benefit severe morbidity following treg depletion observed consecutive doses dtx given peak cell activation demonstrating treg depleted multiple occasions cell activation returned base line levels finally show even minimal treg depletion sufficient significantly improve efficacy tumor peptide vaccination conclusions balb foxp dtr mice ideal model investigate full therapeutic potential treg depletion boost anti tumor immunity dtx mediated treg depletion transient dose dependent leads strong anti tumor immunity complete tumor regression high doses enhancing efficacy tumor specific vaccination low doses together data highlight importance treg manipulation useful strategy enhancing current future cancer immunotherapies
background amounts vitamin metabolically derived specific carotene containing foods largely unknown objective sought develop improved method estimating metabolic vitamin potential provitamin carotenoids using retinyl acetate extrinsic reference standard design healthy subjects consumed standardized test meal containing beta carotene either raw carrot spinach either added fat mol concentrations unlabeled retinyl esters labeled carotenoids plasma triacylglycerol rich lipoprotein fraction determined serial blood samples hplc gas chromatography mass spectrometry baseline corrected areas curve carotenoids calculated masses absorbed retinol carotenes estimated assuming absorption reference dose results trials ample fat beta carotene ingested taken beta carotene plus retinol test meals without carotenes yielded beta carotene response effect treatment either fat amount vegetable mean area curve lower expected vitamin yields attributed poor intestinal uptake rather low conversion beta carotene conclusion triacylglycerol rich lipoprotein method controls variation chylomicron kinetics vivo recovery analysis useful obtaining quantitative estimates vitamin potential single meals
late embryogenesis abundant lea protein one components involved desiccation tolerance maintaining cellular structures dry state study member group lea mwlea cloned mongolian wheatgrass agropyron mongolium keng based homologous sequence wheat triticum aestivum full length cdna sequence encoding protein amino acids amino acid sequence comparison revealed high homology lea proteins plant species deduced mwlea protein five repeat amino acid motifs molecular weight kda theoretical isoelectric point subcellular localization indicated mwlea localized nucleus onion epithelial cell water stress conditions mwlea exhibited different expression levels higher root shoot lowest leaf expression profiling different stresses indicated mwlea played roles responses water salt stresses well abscisic acid aba regulation gene mwlea transformed tobaccos agrobacterium tumefaciens mediated method eleven regenerated plants analyzed polymerase chain reaction pcr southern blotting proved transgenic plants
laboratory sessions designed develop experimental skills acquaintance instruments may contribute successful career biochemistry associated fields study report improving traditional biochemistry course devising laboratory sessions inquiry based environment develop students autonomy plan perform interpret experiments reformulated biochemistry laboratory three activities sequentially increase regarding autonomy used autonomy support structure consisting varying levels engagement student aspects organizational procedural cognitive gradually transferring students responsibility decisions within laboratory results show students performed better less instructed worksheet activities characterized complex autonomy support compared activities tightly controlled worksheet directions review group lab reports suggests students showed skills required work different levels autonomy thus approach positively supported students autonomy mapping progress activities proposed also encouraging make decisions experiments stimulating ability think plan experiments
obtain quantitative information human metabolism selenium performed selenium speciation analysis hplc lcpms samples human urine one volunteer hour period ingestion selenium sodium selenite selenomethionine selenomethionine three separate experiments performed duplicate normal background urine volunteer contained total selenium concentrations depending chromatographic conditions could quantified hplc icpms major species background urine two selenosugars namely methyl acetamido deoxy seleno beta galactopyranoside selenosugar deacylated analog methyl amino deoxy seleno beta galactopyranoside selenosugar selenium rapidly excreted ingestion selenium compounds peak concentrations similar normalized concentrations recorded within hours concentrations returned close background levels within hours time ingested selenium depending species ingested accounted urine experiments major metabolite selenosugar constituting either similar total selenium excreted first hours ingestion selenite selenomethionine similar ingestion selenomethionine selenite present significant levels samples selenomethionine present trace amounts similar equivalent less total following ingestion selenomethionine constituted excreted selenium first hours ingestion selenomethionine presumably form efficiently metabolized trimethylselenonium ion commonly reported urine metabolite could detected urine samples ingestion selenite selenomethionine cytotoxicity studies selenosugar glucosamine isomer selenosugar methyl acetamido deoxy seleno beta glucosopyranoside per formed hepg cells derived human hepatocarcinoma showed compounds low toxicity fold less toxic sodium selenite results support earlier studies showing selenosugar major urinary metabolite increased selenium intake suggest previously accepted pathways human metabolism selenium involving trimethylselenonium ion excretionary end product may need evaluated
siewert type adenocarcinoma esophagogastric junction aej optimal surgical approach extent lymph nodes dissection remain controversial immunohistochemistry ihc reported available identifying lymph node micrometastasis lnmm patients aej prospective case series patients underwent resection lower mediastinal lymphadenectomy january june fujian medical university union hospital siewert type aej outcomes analyzed retrospectively total lymph nodes collected patients grouped groups lower mediastinal paracardial abdominal former groups examined monoclonal antibodies ber cdv incidence lnmm mediastinal group ber cdv routine histological diagnosis number patients positive lymph nodes combining ihc histopathology staining incidence positive mediastinal lymph nodes increased total number lymph nodes patients micrometastases indicated ber cdv associated depth tumor invasion respectively histopathological nodal status respectively lauren classification respectively expression cdv ber positively correlated year survival rates patients respectively patients lnmm lower year survival rate compared lnmm group year survival rate also lower lnmm group versus lnmm group patients positive ber cells lower survival statistically significant cdv positive group significantly reduced survival patients group negative lower mediastinal lymph nodes patients without lnmm obtained significant survival benefit study demonstrated routine test lnmm necessary patients negative lymph nodes positive prognostic factor thorough lower mediastinal lymphadenectomy invasive approach considered necessary ber cdv shown great markers detecting lnmm
work shows main photochemical pathways acetaminophen apap transformation surface waters would direct photolysis quantum yield reaction significant second order rate constant possibly dissolved organic carbon higher reaction triplet states chromophoric dissolved organic matter cdom modelled photochemical half life time apap environmental waters would range days weeks summertime suggests importance phototransformation might comparable biodegradation apap transformation main photochemical pathways yields hydroxylated derivatives ring opening compounds well dimers trimers elevated concentration levels case cdom triplet state anthraquinone sulphonate used proxy ring rearrangement also hypothesised photochemistry would produce different transformation products tps apap microbial biodegradation human metabolism thus relevant tps might used markers apap photochemical reaction pathways environmental waters elsevier ltd rights reserved
effective disease management crops crucial sustain food security safeguard potential losses crop production worth billions dollars key success plant disease management ability detect causal pathogen early accurately polymerase chain reaction pcr gold standard nucleic acid based diagnostics apart pcr within last decade development technique called loop mediated isothermal amplification lamp facilitated development hundreds simple assays plant disease diagnostics lamp publications per year identify plant disease pathogens among lamp assays available pathogen detection plant viruses bacterial plant diseases fungal plant diseases several phytoplasmas provide comprehensive analysis lamp assays available detecting plant diseases including various detection chemistries used also discuss avoid pitfalls developing lamp assays finally offer perspectives applications lamp plant disease management addressing questions extent assays helpful whether used outside laboratory review handbook researchers developing lamp assays plant disease diagnostics
clostridium haemolyticum causes bacillary hemoglobinuria infectious usually fatal disease occurs mostly cattle clinically characterized jaundice hemoglobinuria anemia trematode fasciola hepatica commonly reported main predisposing factor triggers condition authors evaluated naturally occurring cases bovine characterize pathology pathogenesis disease grossly consistent finding large frequently single focus necrosis surrounded red purple halo observed frequently parietal surface right left hepatic lobes findings jaundice dark brown discoloration kidneys red urine urinary bladder microscopically characteristic lesions locally extensive necrotizing hepatitis thrombosis numerous intralesional gram positive rod shaped bacteria acute renal tubular necrosis immunohistochemistry many hepatocytes outside necrotic focus liver positive activated caspase suggesting cells undergoing apoptosis ultrastructural evaluation revealed hepatocyte necrosis hemolysis clumps vegetative sporulating bacilli within liver polymerase chain reaction haemolyticum beta toxin gene positive randomly selected liver samples gross microscopic lesions indicative fascioliasis detected liver animal suggesting yet undetermined predisposing factors associated cases
last decades witnessed explosion scientific interest around gene expression control mechanisms rna level branch molecular biology greatly fueled discovery noncoding rnas major players post transcriptional regulation revolutionary perspective accompanied triggered development powerful technologies profiling short rnas expression high throughput level genome wide identification single candidate analysis steady state accumulation specific species although several state art strategies currently available dosing visualizing fleeing molecules northern blot assay remains eligible approach molecular biology immediate accurate evaluation rna expression represents first step toward application sophisticated costly technologies many cases remains preferential method easily gain insights rna biology overview efficient protocol enhanced northern blot detecting weakly expressed micrornas small regulatory rna species drosophila melanogaster whole embryos manually dissected larval adult tissues vitro cultured cells limited amount rna required use material flow cytometry isolated cells also envisaged
primary hyperoxaluria type rare autosomal recessive inborn error glyoxylate metabolism caused deficiency liver specific enzyme alanine glyoxylate aminotransferase disorder results overproduction excessive urinary excretion oxalate causing recurrent urolithiasis nephrocalcinosis glomerular filtration rate declines due progressive renal involvement oxalate accumulates leading systemic oxalosis diagnosis based clinical sonographic findings urine oxalate assessment enzymology dna analysis early initiation conservative treatment high fluid intake pyridoxine inhibitors calcium oxalate crystallization aims maintaining renal function chronic kidney disease stages best outcomes date achieved combined liver kidney transplantation
mouse isolated perfused kidney mipk technique keeping mouse kidney vivo conditions perfused functional prerequisite studying physiology isolated organ many innovative applications may possible future including perfusion decellularization kidney bioengineering administration anti rejection genome editing drugs high doses prime kidney transplantation time perfusion kidney manipulated renal function assessed various pharmaceuticals administered procedure kidney transplanted processed molecular biology biochemical analysis microscopy paper describes perfusate surgical technique needed vivo perfusion mouse kidneys details perfusion apparatus given data presented showing viability kidney preparation renal blood flow vascular resistance urine data functional transmission electron micrographs different nephron segments morphological readouts western blots transport proteins different nephron segments molecular readout
background aim previous study demonstrated four micrornas mirnas mir mir mir mir downregulated plasma tumor tissues confirmed promising non invasive diagnostic biomarkers gastric cancer methods used quantitative reverse transcription polymerase chain reaction assess expression levels four mirnas paraffin embedded surgical specimens patients kaplan meier curves log rank test applied predict correlation mirnas cumulative overall survival patients besides performed vitro assays including cell proliferation migration invasion colony formation apoptosis results median mirna expression paraffin embedded tissues used cutoff value classify patients high low expression groups regulation mir mir significantly associated shorter patients either test set mir mir validation set mir mir two sets combined cox regression analysis demonstrated mir mir independent prognostic factors predicting patients mir mir furthermore elevated expression mir significantly suppressed cell proliferation migration invasion colony formation induced apoptosis mgc cells compared negative control groups conclusion findings supported mir mir could serve potential prognostic biomarkers
background essential metals chromium magnesium manganese zinc necessary many metabolic processes homeostasis crucial life toxic metals cadmium lead beneficial role human metabolism aim study investigate levels scalp hair samples type diabetes mellitus patients genders ages ranging belong urban areas ireland pakistan comparison purposes age matched non diabetic subjects countries selected referents methods concentrations metals scalp hair samples measured inductively coupled plasma atomic emission spectrophotometer atomic absorption spectrophotometer microwave assisted acid digestion validity accuracy methodology checked conventional wet acid digestion method using certified reference materials results mean values significantly higher scalp hair samples pakistani irish diabetic patients compared referents countries contrast lower concentrations detected scalp hair derived patients type diabetes versus healthy subjects countries conclusion study showed increased toxic elements decreased essential elements associated diabetes mellitus therefore elements may play role development pathogenesis diabetes mellitus elsevier rights reserved
malignant astrocytomas common primary brain tumors critical characterizes astrocyomas aggressive infiltrative brain leads uncontrollable conventional forms therapy micrornas small rnas found regulate targets specific binding untranslated region utr mrna recent advances understanding molecular biology tumors revealed microrna mirna disruption may play important roles pathogenesis astrocytomas mirna alterations found serum astrocytoma patients study studied expression profile mir different stages astrocytoma tissues two human astrocytoma cell lines cells found levels mir decreased cells compared normal human astrocyte nha furthermore levels mir decreased gradually pathological stages astrocytomas also identified trove novel target mir luciferase reporter system furthermore expression levels trove dramatically increased pathological stages increasing finally levels trove negatively correlated mir astrocytoma tissues data provided novel evidence mir trove development human astrocytomas
glucagon like peptide glp amino acid peptide hormone regulatory function stimulating secretion insulin balance blood glucose levels study marker free expression vector fusion gene ten tandem repeated glp analog ser gin asp glp genes constructed transformed cucumbers agrobacterium tumefaciens mediated transformation method four transgenic lines obtained pcr southern blotting analysis two transgenic lines successfully expressed fusion protein named glp revealed western blotting analysis biological activity test results showed serum glucose level diabetic rats significantly decreased oral administration fusion protein glp extracted transgenic cucumber fruitage results suggest may provide brand new strategy prevent cure diabetes pain
immune system vertebrates confers protective mechanisms host sensing stress induced agents expressed infection cell stress among first line host defense composed innate immune sensing agents pattern recognition receptors enables downstream adaptive immunity primed mediating body appropriate response clear infection tissue damage mitochondria bacteria within allowed emergence functional eukaryotic cells positioning cell powerhouse initiator cell death programs striking consider ancestral bacteria evade host defense point develop evolutionary endosymbiosis become instrumental modern eukaryotic cell alerting immune system various insults including infection pathogens mitochondria indeed become critical regulators innate immune responses pathogens cell stress host numerous modulators play direct role assembly innate sensing machineries trigger host immune response sterile non sterile conditions several lines evidence indicate existence complex molecular interplay mechanisms involved inflammation metabolism mitochondrial function seems participate innate immunity various stages diverse transcriptional regulation inflammatory cytokines chemokines maturation inflammasomes review mechanisms mitochondria orchestrate innate immune responses different levels promoting cellular metabolic reprogramming cytosolic immune signaling cascades elsevier ltd rights reserved
immunodeficient mice play critical role hematology research vivo models hematopoiesis immunology multiple strains developed hematopoietic stem cell engraftment immune reconstitution methodically compared among four mouse strains transplanted human fetal bone marrow adult peripheral blood cells nsg nsg hscf nsg hsirp alpha dko hematopoietic engraftment bone marrow blood spleen liver evaluated flow cytometry weeks transplant highest levels human engraftment observed liver spleen bone marrow whereas peripheral blood cell chimerism notably less highest levels tissue engraftment hscf nsg mice nsg mice exhibited highest blood leukocyte engraftment hscf nsg mice also exhibited highest levels stem cells hsirpa dko engrafted poorly exhibited poor breeding myelopoiesis greatest nsg mice followed hscf nsg nsg mice whereas cell engraftment exhibited opposite pattern engraftment cells cells cells greatest nsg mice mast cell engraftment highest hscf nsg mice also elevated spleen livers nsg mice basophils abundant nsg mice overall hscf nsg mice best recipient mice studies requiring high levels human hematopoiesis stem cell engraftment intermediate level myelopoiesis whereas nsg nsg mice offer select advantages engraftment certain blood cell lineages
study effects mir proliferation apoptosis osteosarcoma cell line explore potential molecular mechanism mir regulates biological process quantitive real time polymerase chain reaction qpcr performed explore mirna level mir cell line infected mir mimics establishment mir overexpression non infected cells blank group cells infected empty vector served negative control group mtt assay conducted measure cell viability cell cycle apoptosis explored using flow cytometry apoptosis related markers detected western blotting qpcr results revealed mir mirna level cells significantly lower osteoblasts mtt assay showed cells infected mir mimics exhibited markedly decreased proliferation ability compared blank empty vector groups next found overexpression mir remarkably increased apoptosis cells evidenced flow cytometry results elevated bax reduced bcl furthermore results revealed percentage cells phase mir mimic group significantly higher blank groups mir attenuated proliferation induced apoptosis cells via promoting cell cycle arrest thus mir may potential novel therapeutic treatment osteosarcoma
prostate composed mainly epithelial stromal cells whose dynamic interaction vital broad array cellular processes including proliferation differentiation growth apoptosis understand intercellular communication development progression prostatic diseases examined gene expression tissues five patients diagnosed benign prostatic hyperplasia bph fibroblasts epithelial cells derived tissues grown primary culture system retains many characteristics intact human prostate mrna levels expressed genes assessed differential display reverse transcription pcr revealed genes differentially expressed cultured fibroblasts epithelial cells compared expression separately cultured cells eighty four confirmed reverse northern blotting successfully sequenced sequenced genes differentially expressed epithelial cells upregulated downregulated differentially expressed fibroblasts upregulated downregulated cultures versus separate cultures semi quantitative pcr analysis genes known functions showed five differentially expressed cultured cells human kallikrein gene klk markedly upregulated cultured compared separately cultured epithelial cells whereas calcium binding protein tyrosine monooxygenase tryptophan monooxygenase activation protein cyclin latexin significantly downregulated cultured fibroblasts quantitative real time pcr western blot analysis confirmed klk regulation mrna protein levels respectively thus epithelial stromal cell interaction communication likely important bph epithelial cells fibroblasts may interplay coordinately collaboratively influence cellular growth death dynamically differential gene expression response physiological pathophysiological changes
background selenium essential element metabolism humans well characterized small studies indicate trimethylselenonium ion tmse common selenium metabolite humans objective study aimed elucidate human metabolism selenium tmse design study individuals constituted subsamples cohorts pregnant women old children rural bangladesh poor selenium status median urinary selenium mothers children women argentinian andes adequate selenium status median total blood selenium measured inductively coupled plasma mass spectrometry icpms urinary concentrations tmse measured high performance liquid chromatography vapor generation icpms genomewide association study gwas performed filtration single nucleotide polymorphisms snps bangladeshi women using illumina omnim results validated using real time polymerase chain reaction results tmse producers prevalent approximately one third among bangladeshi women children tmse constituted similar whereas nonproducers average tmse tmse producing women average higher concentrations nonproducers contrast andean women tmse producers tmse urine average percentage among nonproducers comparison percentage urinary tmse mothers children indicated strong genetic influence gwas identified snps indolethylamine methyltransferase gene inmt strongly associated percentage tmse false discovery rate corrected cohorts conclusions remarkable population individual variations formation tmse could largely explained snps inmt tmse producing women higher concentrations nonproducers elucidation metabolic pathways selenium essential understanding role human health
administration creatine day one month young active sportsmen affected urinary excretion creatine creatinine thiodiglycolic acid tdga well blood levels homocysteine vitamin folates probands divided four groups according amount creatine found urine folates vitamin determined blood changes folates vitamin mutually reciprocal group utilized donor one two carbon units means homocysteine hocysh folates vitamin different metabolic pathways men creatine administration accompanied increase hocysh level blood last man accidentally discovered hyperhomocysteinemia hocysh level dropped differences initial terminal tdga levels indicate creatine affects equilibria redox processes creatinine excretion urine changed dependence extent metabolic disturbances
feruloyl esterase fae gene est basidiomycete pleurotus sapidus heterologously expressed escherichia coli pichia pastoris catalytically active recombinant est secreted using pastoris host expression pastoris expression vector ppick applied est gene cloned terminal mating factor pre pro sequence expressed control methanol inducible alcohol oxidase promotor est purified homogeneity using ion exchange hydrophobic interaction chromatography recombinant est showed optima degrees released ferulic acid saccharide esters natural substrate destarched wheat bran substrate specificity profile descriptor based analysis demonstrated unique properties showing est fit current fae classification model transferuloylation synthesis feruloyl saccharide esters proven mono disaccharides international union biochemistry molecular biology inc volume number pages
biofilm detachment caused flushing result secondary contamination drinking water distribution systems dwdss evaluate impact flushing biofilm detachment actual water supply pipes including ductile cast iron pipes dcips gray cast iron pipes gcips stainless steel compound pipes sscps used study real time quantitative polymerase chain reaction pyrosequencing used quantify bacteria analyse microbial community composition respectively results showed pipe material greatly influences resistance biofilm flushing biofilms attached dcips able resist quite strong flushing attached gcips sscps sensitive flushing flush resistant flush sensitive bacteria present biofilms frequency differed among different metal pipes thus resistance flushing bacteria related nature bacteria also pipe material although flushing remove biofilm may good way clean dwds shear stress needed remove biofilm differs among different pipe types results study provide technical support management operation dwds
background insulin sensitivity key function human metabolism crucial role development disease increasingly common modern society impaired insulin sensitivity important determinant type diabetes moreover proposed independent risk factor cardiovascular disease thus reduced insulin sensitivity strongly associated metabolic syndrome represents cluster metabolic abnormalities cardiovascular risk factor insulin sensitivity modulated different environmental factors including dietary habits obesity especially associated abdominal adiposity impairs insulin sensitivity physical activity improve however composition habitual diet clearly important regulator function aim evaluate methodologies markers used substantiate existing potential claims beneficial effects foods relevant functions connected body fat deposition insulin sensitivity blood glucose regulation results reviewed scientific basis existing potential claims based modifications target functions body fat deposition insulin sensitivity blood glucose regulation also modifications relevant associated functions energy intake energy expenditure fat storage oxidation lipotoxicity body fat composition inflammation oxidative stress vascular function glucose production utilization context identified number markers evaluated appropriate method measure validate conclusions relevant functions contributing overweight metabolic syndrome diabetes identified evidence reviewed indicates field link nutrition biological responses diseases clearly established therefore stromg potential develop functional food science major gap evidence continues lack diet based intervention trials sufficient duration relevant affecting natural history conditions
matrix metalloproteinase mmp closely involved degradation extracellular matrix confers invasive metastatic potential malignant tumors mmp type collagenase secreted proenzyme activated surface tumor cell membrane type mmp mmp mmp plays critical role tumor progression metastasis investigated expression levels eaf mmp malignant melanoma cell lines specimens patients order clarify mechanisms responsible invasion metastasis malignant melanoma high levels eaf mmp mrna expression observed melanoma cells northern blotting real time pcr expression level highly correlated invasive potential determined vitro invasion assay regulation mmp identified eaf knocked rna interference results suggest eaf plays crucial role invasion metastasis malignant melanoma regulating mmp expression
zinc plays important role animal human metabolism nowadays one extensively studied trace element since sphere action demonstrated broad biochemical standpoint controls different enzymes many involved intermediary metabolism dna rna synthesis gene expression immunocompetence also plays significant role hormonal homeostasis since interact almost hormones closely related thyroid steroid hormones insulin parathormone pituitary hormones particularly prolactin prl inhibit prl secretion within range physiologically pharmacologically relevant concentrations property raised possibility clinical applications zinc article review literature subject attempt provide comprehensible general view
barley hordeum vulgare among stress tolerant crops however much known genetic environmental control metabolic adaptation barley abiotic stresses subjected genetically diverse set barley accessions consisting mediterranean landrace genotypes german elite breeding lines drought combined heat drought stress anthesis aim investigate potential differences morphological physiological metabolic adaptation two stress scenarios mediterranean german barley genotypes identify metabolic quantitative trait loci mqtls end genotyped investigated barley lines illumina iselect array analyzed set metabolites primary well antioxidant metabolism flag leaves control stress conditions found drought adapted genotypes attenuate leaf carbon metabolism much strongly elite lines drought stress adaptation furthermore identified mqtls flag leaf gamma tocopherol glutathione succinate content association genetics localize genes encoding enzymes pathways producing antioxidant metabolites results provide molecular basis breeding barley cultivars improved abiotic stress tolerance
low oxygen pressure hypoxia often obstacle pathological conditions including cancer development metastatic dissemination main family transcription factors involved adaptation inappropriate oxygen levels hypoxia inducible factors hifs together hif prolyl hydroxylases phds regulate many different processes physiological well pathological conditions additionally entire hif transcription cascade involved seventh hallmark cancer tumor promoting inflammation previous work revealed hif pathway proteins influence tumor associated immune cells action toward proliferation differentiation vessel normalization tumor dissemination changes necessarily analogous role proteins non tumor related immune responses hypoxia often encourages strong inflammatory response recently clever demonstrated cell intrinsic inhibition three phds phd necessary sufficient limit regulatory reg cell induction stimulates cell effector function interestingly resulted inhibition local tolerance lung reduced tumor colonization perspective discuss effect targeting hif pathway proteins tumor associated cell lineages therapeutic prospective possible pitfalls
cell immunoglobulin mucin tim mainly expressed antigen presenting cells plays versatile role immunoregulation cdd restricted invariant natural killer inkt cells potent cells involved diverse immune responses recently reported recombinant tim rtim alone enhanced cytokine production nkt hybridoma cells hence hypothesized tim might regulate inkt cell biology especially function cytokine secretion first time identified tim expressed thymus inkt cells expression increased upon inkt cell migration secondary lymphoid organs especially lymph nodes using tim deficient mice found lack tim disturb inkt cell development maturation peripheral homeostasis cytokine secretion moreover tim deficiency alter polarization inkt sublineages including nkt nkt nkt finally mixed bone marrow transfer experiments confirmed normal inkt cell development function tim deficient bone marrow conclusion data suggest tim expressed inkt cells dispensable development function
bewildering complexity relationship genotype phenotype human mitochondrial diseases delayed understanding related cytopathological mechanisms explore relationship mitochondrial dysfunction dictyostelium discoideum related cytopathologies determined whether phenotypic outcomes similar regardless discoideum mitochondrial gene targeted disruption disruption mitochondrial genes resulted similar pattern phenotypes caused mitochondrial defects include impairment phototaxis multicellular development growth plates liquid medium reduced growth rates could due defective phagocytic macropinocytic nutrient uptake processes tested found unaffected since mitochondria associated legionella pathogenesis human macrophages also determined mitochondrially diseased dictyostelium strains better worse healthy cells supporting growth legionella pneumophila results revealed mitochondrially diseased strains supported greater pneumophila growth wild type dictyostelium strain quantitative northern blotting showed significant reduction level expression entire mitochondrial genome regardless mitochondrial gene targeted disruption suggesting generalized deficiency mitochondrial gene expression function phenotypic outcomes shown previously result chronic hyperactivity energy sensing protein kinase ampk knockdown mitochondrial chaperonin elsevier inc rights reserved
interleukin pleiotropic regulatory cytokine potential treating several human diseases including type diabetes thus far conventional expression systems recombinant production proven difficult limited efficiency study transgenic plants used novel expression platform production human hil dna constructs containing hil cdna introduced tobacco plants transcriptional expression hil gene transgenic plants confirmed reverse transcriptase polymerase chain reaction northern blotting western blot analysis showed hil protein efficiently accumulated transgenic plants present multiple molecular forms expression level high total soluble protein leaves multiple forms plant derived recombinant hil rhil result differential linked glycosylation revealed enzymatic chemical deglycosylation disulphide linked oligomerization vitro trypsin digestion indicated plant rhil resistant unglycosylated control rhil proteolysis stability plant rhil digestion supported simulated gastric intestinal fluid digestion vitro bioassays using factor dependent human erythroleukaemic cell line cells showed plant rhil retained biological functions authentic hil protein results demonstrate transgenic plants superior conventional cell based expression systems production rhil moreover transgenic plants synthesizing high levels rhil may prove attractive delivery system direct oral administration treatment clinical diseases type diabetes
since molecular biology studies began researches biological science centered proteins genes molecular level single cell cancer research also focused various functions proteins genes distinguish cancer cells normal cells accordingly contemporary anticancer drugs developed target abnormal characteristics cancer cells despite great advances development anticancer drugs vast majority patients advanced cancer shown grim prognosis high rate relapse resolve problem must reevaluate focuses current cancer research cancer considered systemic disease cancer cells undergo complex interaction various surrounding cells cancer tissue spread whole body metastasis control systemic modulation human body relies cooperative interaction various tissues organs organ performs specialized function tissue specific cell networks therefore investigation tumor specific cell networks provide novel strategy overcome limitation current cancer research review presents limitations current cancer research emphasizing necessity studying tissue specific cell network could new perspective treating cancer disease cancer cells
diversity reactions catalyzed enzymes reliant pyridoxal phosphate plp demonstrates catalytic versatility cofactor plasticity protein scaffolds major fold types plp dependent enzymes enzymes transsulfuration cystathionine gamma synthase cystathionine beta lyase reverse transsulfuration cystathionine beta synthase cystathionine gamma iyase pathways interconvert cysteine homocysteine immediate precursor methionine plants bacteria yeast animals respectively enzymes provide useful model system investigation mechanisms substrate reaction specificity plp dependent enzymes catalyze distinct side chain rearrangements similar amino acid substrates exploration underlying factors enable enzymes control substrate reaction specificity cofactor enable engineering properties development therapeutics antimicrobial compounds recent studies probing role active site residues enzymes transsulfuration pathways determinants substrate reaction specificity subject review article part special issue entitled pyridoxal phosphate enzymology published elsevier
introduction obesity serious public health problem mexico national health nutrition survey ensanut reported prevalence overweight obesity children aged recent research suggested gut microbiota may risk factor obesity influence human metabolism aim study evaluate association intestinal microbiota profile obesity among children whether association modified depending feeding pattern sample schoolchildren mexico city metodology results cross sectional study children aged years physical activity questionnaire personal medical history heredofamilial obesity type diabetes administered children eating patterns performed principal component analysis pca association intestinal microbiota overweight obesity depending diet assessed logistic regression models conclusion results shows interaction intestinal microbiota diet particularly high fats simple carbohydrates increases chance developing obesity
telomerase activation critical many cancers including central nervous system cns tumors imetelstat oligonucleotide binds template region rna component telomerase inhibiting enzymatic activity conducted investigator sponsored molecular biology phase study estimate inhibition tumor telomerase activity sustained responses imetelstat children recurrent cns malignancies study patients recurrent medulloblastoma high grade glioma hgg ependymoma undergoing resection received one dose imetelstat intravenous infusion surgery telomerase activity evaluated fresh tumor surgery post surgery phase study patients received imetelstat days days imetelstat pharmacokinetic pharmacodynamic studies performed two evaluable patients trial intratumoral telomerase activity inhibited compared baseline archival tissue one patient inevaluable one patient forty two patients evaluable toxicity enrolled medulloblastomas hgg ependymomas diffuse intrinsic pontine gliomas common grade toxicities included thrombocytopenia lymphopenia neutropenia alt ast elevation two patients died intratumoral hemorrhage secondary thrombocytopenia leading premature study closure objective responses observed telomerase inhibition observed peripheral blood mononuclear cells pbmcs least days imetelstat demonstrated intratumoral pbmc target inhibition regimen proved toxic children recurrent cns tumors
identified nodulin related protein nrp encoded atg previously reported rps interacting protein yeast two hybrid assay northern blotting showed atnrp expression suppressed heat stress degrees induced low temperature degrees treatment strong gus staining observed sites meristematic tissues patnrp gus transgenic plants shoot apex root tips young leaf veins stamens stigmas flowers abscission layers young siliques study atnrp biological functions characterized loss function dna insertion transgenic overexpression plants atnrp arabidopsis dna insertion mutants displayed obvious difference compared wild type arabidopsis heat stress significant enhanced susceptibility heat stress revealed two independent atnrp overexpressing transgenic lines study found decreased thermtolerance atnrp overexpressing lines accompanied significantly decreased accumulation aba heat treatment probably due atnrp playing role negative feedback regulation aba synthesis pathway results support viewpoint application aba inhibits nodulation nodulin related gene expression threaten adverse ambient temperature impact nodulin related gene expression
benzene important industrial solvent also present unleaded gasoline cigarette smoke hematotoxic effects benzene humans well documented include aplastic anemia pancytopenia acute myelogenous leukemia however risks leukemia low exposure concentrations established combination metabolites hydroquinone phenol example may necessary duplicate hematotoxic effect benzene perhaps due part synergistic effect phenol myeloperoxidase mediated oxidation hydroquinone reactive metabolite benzoquinone benzene hydroxylated metabolites phenol hydroquinone catechol substrates cytochrome enzymes competitive interactions among metabolites possible vivo data metabolite formation mice exposed various benzene concentrations consistent competitive inhibition phenol oxidation benzene vitro studies metabolic oxidation benzene phenol hydroquinone consistent mechanism competitive interaction among metabolites dosimetry benzene metabolites target tissue bone marrow depends balance activation processes enzymatic oxidation deactivation processes conjugation excretion phenol primary benzene metabolite undergo oxidation conjugation thus potential exists competition among various enzymes phenol zonal localization phase phase enzymes various regions river acinus also impacts competition biologically based dosimetry models incorporate important determinants benzene flux including interactions chemicals enable prediction target tissue doses benzene metabolites low exposure concentrations relevant humans
inflammation retinal pigment epithelium important contributor pathogenesis age related macular degeneration wogonin flavonoid isolated root scutellaria baicalensis multiple pharmacological effects including anti inflammatory effects present study sought determine pharmacological effects wogonin relevant treatment amd arpe cells pre conditioned different concentrations wogonin prior induction inflammation lps transepithelial electrical resistance analysis demonstrated treatment wogonin ameliorated lps induced changes reverse transcription quantitative polymerase chain reaction qpcr immunofluorescence analyses revealed wogonin restrained lps induced tight junction proteins claudin lps induced upregulation inflammatory mediators arpe cells including beta cyclooxygenase cox inducible nitric oxide synthase inos tnf alpha reduced pre treatment wogonin addition qpcr western blotting demonstrated wogonin inhibited expression tlr lps stimulated arpe cells novel mechanism indicating pre treatment wogonin could attenuate tlr kappa mediated inflammatory response lps stimulated arpe cells thus could potential therapy treatment amd
advances clinical immunology past year included report practice parameters diagnosis management primary immunodeficiencies guide clinician approach relatively uncommon disorders learned new gene defects causing immunodeficiency new phenotypes expanding spectrum conditions caused genetic mutations specific regulator telomere elongation rtel mutation causing isolated natural killer cell deficiency mutations ras associated rab rab resulting immunodeficiency without albinism advances diagnosis included increasing use whole exome sequencing identify gene defects measurement serum free light chains identify secondary hypogammaglobulinemias several primary immunodeficiencies improved outcomes reported definitive therapy hematopoietic stem cell transplantation gene therapy
environmental release genetically engineered microorganisms gems improve agriculture remediate environmental hazards raised concern fate organisms engineered genes detect microorganisms released environment molecular level bacillus subtilis producing iturin pseudomonas fluorescens carrying moc mannityl opine catabolism region agrobacterium tumefaciens employed model microorganisms using specific fusion primers taqman probes qualitative quantitative detections model organisms pcr real time pcr conducted employing small scale soil core device pots six month period data indicate model bacteria easily detected qualitative quantitative methods test systems employed give significant impacts bacteria soils southern blotting analysis although long term observation may needed
hiv integrase encoded end hiv pol gene essential hiv replication enzyme catalyzes incorporation hiv dna human dna represents point return hiv infection integrase significant target anti hiv drug discovery review article focuses largely design integrase inhibitors beta diketo acids constructed pyridinone scaffolds methodologies synthesis compounds discussed integrase inhibition data strand transfer step compared vitro anti hiv data review also examines issue lack correlation enzymology data anti hiv assay results disconnect appeared problem associated permeability prodrugs inhibitors designed synthesized prodrugs dramatically improved anti hiv activity data example compound anti hiv activity improved diketo acid prodrug addition excellent correlation enzymology data respectively anti hiv data prodrug respectively finally confirmed prodrug rapidly hydrolyzed cells active compound
ige associated allergic diseases belong common inflammatory conditions clinical manifestation ranges mild symptoms life threatening episodes often patients experience reduction physical psychologic well suffer decreased quality life due disease activity continuously rising number people affected allergic condition indicates urgent need better diagnostics efficient treatment options recent progress understanding pathophysiologic mechanisms underlying ige associated allergic disorders led identification novel therapeutic targets development drug candidates currently evaluation review highlight studies clinical trials helped gain insight etiology ige associated allergic conditions well advances development diagnostic tools therapeutic approaches recently published allergy european journal allergy clinical immunology
gene par prostate apoptosis response originally identified prostate cancer cells undergoing apoptosis product par showed cancer specific proapoptotic activity particularly sac domain par sac par selectively kills cancer cells leaving normal cells unaffected therapeutic significance bioactive sac par enormous cancer biology however large scale production still matter concern report production sac par gfp fusion protein coupled translational enhancer sequence apoplast signal peptide atp transgenic nicotiana tabacum samsun plants control unique recombinant promoter transgene integration confirmed genomic dna pcr southern northern blotting real time pcr nuclear run assays results western blot analysis elisa confirmed expression recombinant sacpar gfp protein high total soluble protein addition found targeting plant recombinant sac par gfp apoplast endoplasmic reticulum essential stability plant recombinant protein comparison bacterial derived sac par deglycosylation analysis demonstrated targeted sac par gfp sekdel undergoes linked glycosylation unlike apoplast targeted sac par gfp furthermore various vitro studies like mammalian cells proliferation assay apoptosis induction assays suppression suggested cytotoxic apoptotic properties plant derived sac par gfp multiple prostate cancer cell lines additionally pre treatment mat lylu prostate cancer cells purified sac par gfp significantly delayed onset tumor syngeneic rat prostate cancer model taken altogether proclaim plant made sac par may become useful alternate therapy effectively alleviating cancer new era
background nonsyndromic cleft lip without cleft palate nscl one common craniofacial birth defects etiology nscl involves genetic environmental factors genome wide association study gwas identified novel susceptibility locus ventral anterior homeobox vax patients nscl however association single nucleotide polymorphisms snps vax nscl inconclusive due differences racial ethnic populations aim study replicate association vax nscl northern chinese han population methods study included patients nscl healthy individuals northern china five snps vax genotyped using snapshot method results recessive genetic model analysis revealed homozygous genotype vax associated increased risk nscl odds ratio confidence interval results significant bonferroni correction multiple comparisons allele genotype frequencies allele frequencies showed significant differences cases controls haplotype snp snp interaction analyses detect significant association vax occurrence nscl conclusion vax weakly associated nscl development studied northern chinese han population
lateral gene transfer lgt facilitate acquisition new functions recipient lineages may enable colonize new environments several recent publications shown gene transfer prokaryotes eukaryotes occurs appreciable frequency present study interdomain gene transfer cutinases well documented virulence factors fungi eukaryotic plant pathogens phytophthora species prokaryotic bacterial lineages two putative cutinase genes cloned phytophthora brassicae northern blotting experiments showed genes expressed early infection host arabidopsis thaliana induced cyst germination pathogen analysis gene organisation gene family phytophthora ramorum sojae showed three ten copies tight succession within region respectively probably indicating recent expansion phytophthora lineages gene duplications bioinformatic analyses identified orthologues three genera actinobacteria two distantly related eukaryotic groups oomycetes fungi together phylogenetic analyses limited distribution gene tree life strongly support scenario cutinase genes originated origin land plants microbial lineage living proximity plants subsequently transferred distantly related plant degrading microbes precisely cutinase gene likely acquired ancestor brassicae sojae infestans ramorum possibly actinobacterial source suggesting gene transfer might important mechanism evolution virulence findings could indeed provide interesting model system study acquisition virulence factors important plant pathogens elsevier lights reserved
background bladder cancer leading cause morbidity mortality despite recent advances understanding molecular biology year survival muscle invasive disease muscle invasive bladder cancer mibc remains approximately although neoadjuvant chemotherapy nac offers established absolute survival benefit years patients major tumor response appear benefit remains therefore critical unmet need predictive markers determine patients best managed nac well novel targeted therapies overcome resistance nac methods nac paradigm offers optimal clinical context developing precision therapy mibc abundant tissue available analysis nac patients nac patients residual mibc technologic advances enabled next generation sequencing gene expression microarray analysis routinely collected even archived tissue specimens technologies provide foundation identification markers chemoresistance development rational cotargeting strategies results modern computational methods allow measure target validation enhanced use patient derived primary xenografts pdx pdx established time radical cystectomy nac residual mibc time patient recurs clinically candidate drugs targeting specific molecular changes patient tumor corresponding pdx would tested pdx model efficacious drug would administered patient liquid biopsies form circulating tumor dna circulating tumor cells allow noninvasive longitudinal monitoring molecular landscape advanced tumor treated successive courses systemic therapy conclusions tools combined form foundation evidence based precision oncology strategy mibc elsevier inc rights reserved
background micrornas mirnas highly conserved small non coding rnas nucleotides mediate post transcriptional gene regulation hepatitis virus hbv cause either acute chronic hepatitis high risk factor liver cirrhosis hepatocellular carcinoma mammalian viruses shown modulate expression host cellular mirnas however interactions hbv host cellular mirnas largely unknown methods mirna microarray northern blotting analysis used compare expression profile cellular mirnas stable hbv expressing cell line hepg parent cell line hepg mrna microarray assay miranda program used predict mirna targets flow cytometric assay used investigate expression human leukocyte antigen hla results eighteen mirnas differentially expressed two cell lines among eleven regulated seven regulated hepg cells northern blotting analysis confirmed expression mir mir mir mir regulated expression mir regulated consistent results microarray analysis furthermore putative mirna targets predicted verified linked mrna expression utr hla gene one partially complementary site mir mir might regulate expression hla conclusion hbv replication modulates expression host cellular mirnas may play role pathogenesis hbv related liver diseases
case history year old female new zealand sea lion phocarctos hookeri intermittently observed otago region new zealand month period always dragging hind flippers december sea lion found dead period several days observed harassed male sea lions pathological findings gross postmortem examination sea lion moderate body condition signs recent bite wounds bruising lungs dark poorly inflated histological findings included meningoencephalomyelitis radiculomyelitis cauda equina myocarditis myositis toxoplasmosis gondii organisms detected histologically following immunohistochemistry brain spinal cord spinal nerves pelvic muscles molecular biology nested pcr analysis sequencing confirmed presence gondii dna uterine lung tissue variant type gondii genotype identified using multilocus pcr restriction fragment length polymorphism analysis diagnosis systemic toxoplasmosis clinical relevance infection gondii involving spinal cord nerves likely cause paresis observed sea lion death ultimately death attributed crushing asphyxiation male sea lion presumably predisposed impaired mobility diagnosis toxoplasmosis new zealand sea lion highlights possibility disease could play role morbidity mortality endangered species particularly recently established mainland populations close feline sources gondii oocysts
salvador dali relationship science one important aspects artistic production spanning disciplines physics mathematics biology considering interest different sciences aim paper explore special relationship painter molecular biology establishing catalogue works permitting identification importance within dali career try demonstrate called dna period encompasses broader chronology one traditionally proposed extending would place dali pioneer incorporation molecular biology art history
sex symbionts useful creating beneficial traits however resultant decrease genetic relatedness symbionts potentially detrimental mutualistic interactions fungus growing termites cultivated fungi genus termitomyces termite host try increase intra nest symbiont relatedness increase crop productivity parasites mutualism fungi sub genus pseudoxylaria may also use sex generate variation counter evolving host defensive mechanisms using molecular phylogenetic tools found within nest genetic homogeneity termitomyces species pseudoxylaria species associated fungus growing termite odontotermes obesus lower otu higher genotypic diversity within abundant otu genus termitomyces sub genus pseudoxylaria additionally population genetics methods suggest sexual population structure termitomyces species clonal propagation pseudoxylaria species first study investigate population genetics symbiotic fungi associated genus odontotermes india elsevier ltd british mycological society rights reserved
caseins widely used species identification dairy products isoelectric focusing ief para kappa casein peptide used official german method differentiation caprine isoform ovine isoform dairy products based different isoelectric points discrimination greek goat ewe dairy products using ief however shown problematic existence ewe isoform milk greek indigenous dairy goats could due nucleotide polymorphisms within goat kappa casein gene greek indigenous breeds alter isoelectric point para kappa casein peptide lead false positive results previous dna analysis goat kappa casein gene shown high levels polymorphism however information available greek indigenous dairy goats therefore indigenous dairy goats sequenced exon kappa casein genie total polymorphic sites detected three nonsynonymous point mutations identified change isoelectric point goat para kappa casein peptide appears identical ewe peptide ten composite genotypes reconstructed included problematic point mutations verification genetic results ief carried goat ewe patterns appeared problematic genotypes frequency genotypes could characterized moderate high within greek indigenous breeds however issue restricted greece genotypes detected various non greek goat breeds conclusion ief based official german method certainly inappropriate ovine caprine discrimination concerning greek dairy goat products consequently new method established
htra complex trimeric pyramidal mitochondrial serine protease regulates critical biological functions diseases including apoptosis cancer promising therapeutic target promotes apoptosis multiple pathways complex mechanisms still elusive existing model activation emphasizes relative intramolecular movements terminal pdz protease domains pdz protease collapse inactive resting states able unambiguously demonstrate dynamics actions using structure guided design molecular biology protein biochemistry obtained various combinations htra domains mutants conformational changes stability characterized using molecular dynamics simulation spectroscopic tools functional enzymology delineated roles regulating enzyme catalysis quantitative forster resonance energy transfer showed lesser intramolecular pdz protease distance trimeric htra compared inactive monomeric counterpart approximate approximate angstrom respectively degrees findings highlight importance terminal region oligomerization intricate intermolecular pdz protease interaction proper active site formation enzyme substrate complex stabilization hence htra functions observations redefine existing activation model showcase unique example precise interdomain coordination plasticity intermolecular contacts lead distinct functional properties hence provide new insights htra structure function dynamics
two bacterial strains isolated root nodules soybean characterized phylogenetically members distinct group genus ensifer based rrna gene comparisons also verified separated group concatenated sequence analyses reca atpd glnii similarities type strains defined species average nucleotide identities ani whole genome sequence representative strain ccbau closely related strains ensifer glycinis ensifer fredii respectively phylogeny symbiotic genes nodc nifh grouped two strains together soybean nodulating strains fredii glycinis ensifer sojae nodulation tests indicated representative strain ccbau could form root nodules capability nitrogen fixing host plant glycine soja cajanus cajan vigna unguiculata phaseolus vulgaris astragalus membranaceus formed ineffective nodules leucaena leucocephala strain ccbau contained fatty acids omega iso differing related strains utilization threonine serine carbon source growth intolerance naci distinguished strain ccbau type strains related species genome size ccbau mbp comprising predicted genes dna content mol unique genes therefore novel species ensifer shofinae nov proposed ccbau accc lmg type strain elsevier gmbh rights reserved
modern environmental awareness leads realisation human metabolism stressed huge number chemical substances generally background exposures consisting predominantly natural partly industrial well life style sources tolerated without adverse effects pesticides chemicals intentionally introduced environment become necessities modern agriculture well indoor pest control residues therefore attracting concern majority pesticides neither occupational environmental medical risk evaluations far available therefore moment occupational well environmental supported preventive concept may achieved binding instructions upon experience guide values developed assessment individual risk handling pesticides occupational environmental pesticide prophylaxis ubiquitous background exposure levels consideration individual susceptibility factors recommended provisional biological tolerance guide values suitability guide values concept pesticides demonstrated determining background exposure biomarkers susceptibility unexposed persons well occupationally exposed persons result significant dependence health fidelity background exposure profile impressed individual polymorphism key enzymes observed especially cumulative adducts electrophilic substances metabolites macromolecules like hsa turned sensitive markers capacity individual metabolic rate alkylating arylating pesticides observed interindividual susceptibility adverse effects depends variability individual toxifying detoxifying metabolic rates scientific evaluation official biological tolerance values pesticides carried advisable risk prophylaxis orientate assessment individual tolerable stress strain pesticides synergism background exposure life style factors biomarkers specific susceptibility may examined monitoring conjugates polymorphism marked individual metabolic rate monitoring surveillance pesticide exposures mainly introduced recommendation tolerable biological values reference value concept concept essential contribution objective risk discussion regard individual stress strain profiles environmental exposure scenarios elsevier science ireland ltd rights reserved
xenopus oocyte heterologous expression system proteins first described gurdon widely used since discovery references references therein characteristic makes oocyte attractive foreign channel expression poor abundance endogenous ion channels expression system proven useful characterization many proteins among ligand gated ion channels expression gaba receptors xenopus oocytes functional characterization described including isolation oocytes microinjections crna removal follicular cell layers fast solution changes electrophysiological experiments procedures optimized laboratory deviate ones routinely used traditionally denuded oocytes prepared prolonged collagenase treatment ovary lobes denuded oocytes microinjected mrna using optimized methods diverse membrane proteins expressed studied system recombinant gabaa receptors human recombinant chloride channels trypanosome potassium channels myo inositol transporter methods detailed may applied expression protein choice xenopus oocytes rapid solution change used study ligand gated ion channels
article suggests theme future nitrogen studies involving functioning evolution biosphere together certain aspects human biology hoped theme could developed multi authored book point future although numerous new case studies may required biosphere considered single interactive system comprised numerous component parts including atmosphere rain rivers lakes oceans continental ecosystems marine ecosystems soils sediments order study internal complexity components relationships exist one choose common theme author believes nitrogen good prospect ubiquitous nature complex chemistry burial sedimentary volatiles continental crust contributed long term chemical evolution exterior environments earth marked effects notably accumulation atmospheric oxygen due burial reduced carbon understanding passage sedimentary volatiles crust provide important constraints evolution biosphere may lead meaningful comparative planetology carbon difficult trace crustal processes high temperature form graphite incompatible crystal structures silicate minerals however high temperature form sedimentary nitrogen ammonium readily enters potassic minerals easily traced crustal processes herein fate sedimentary nitrogen traced wet sediments metamorphic rocks granites crustal melts without trapping nitrogen crust liberation oxygen consequence biological nitrogen fixation atmosphere may total atmospheric pressure atm changes oxygen content due dilution nitrogen present atmospheric oxygen consequence nitrogen fixation ancient continental surfaces would volcanic deserts containing little ppm nitrogen today nitrogen rich soils support continental ecosystems one use nitrogen window speculate colonisation continents land plants herein nitrogen fixation legumes considered detail drawing analogies present day author speculates colonisation continents land plants speculated evolution atmosphere soils continental ecosystems one place human centre tropical forest begin examine relate modern biosphere chosen example metabolism plant protein roles glutamate dehydrogenase gdh vitamin flavin mononucleotide fmn realisation theme would imply numerous new case studies notably concerning continental crust nitrogen studies linked mineralogy petrology geochemical tracers including short range order delta taken consideration elsevier science rights reserved
background anaplasma phagocytophilum emerging tick borne zoonotic pathogen increased interest worldwide detected northern africa anaplasma platys also present region could possibly zoonotic potential however one recent article reports human esposure phagocytophilum morocco data available canine exposure bacteria therefore conducted cross sectional epidemiological study aiming assess canine human exposure anaplasma spp morocco total dogs urban rural working dogs dog owners sampled four cities morocco canine blood samples screened anaplasma spp antibodies enzyme linked immunosorbent assay elisa phagocytophilum platys dna real time polymerase chain reaction pcr targeting msp gene human sera tested specific phagocytophilum immunoglobulin igg using commercial immunofluorescence assay ifa kit results anaplasma spp antibodies platys dna detected dogs respectively anaplasma phagocytophilum dna amplified anaplasma platys dna significantly frequently amplified working dogs statistically significant differences prevalence anaplasma spp antibodies platys dna detection observed sexes age classes relation exposure ticks total rhipicephalus sanguineus sensu lato ticks removed urban working dogs majority dog owners seroreactive phagoyctophilum igg one sample excluded hemolysis conclusions study demonstrates occurrence anaplasma spp exposure platys infection dogs phagocytophilum exposure humans morocco
lepidopteran pest insect helicoverpa zea feeds cultivated corn cotton across americas control remains challenging owing evolution resistance chemical transgenic insecticidal toxins yet genomic resources remain scarce species bacterial artificial chromosome bac library mean genomic insert size kbp created laboratory strain zea provides similar fold coverage mbp flow cytometry estimated haploid genome size assembly illumina hiseq reads generated pools encompassed bac clones resulted genomic contigs mbp total long terminal repeat ltr protein coding regions annotated contigs included copia gypsy bel pao elements encoded five functional polyprotein pol domains approximately ltr elements distributed non randomly across pools bac clones
limited number oral vaccines currently approved use humans veterinary species clearly illustrates development efficacious safe oral vaccines challenge fish immunologists insufficient efficacy oral vaccines partly due antigen breakdown harsh gastric environment also high tolerogenic gut environment inadequate vaccine design review discuss current approaches used develop oral vaccines mass vaccination farmed fish species furthermore using various examples human veterinary vaccine development propose additional approaches fish vaccine design also considering recent advances fish mucosal immunology novel molecular tools finally discuss pros cons using zebrafish pre screening animal model potentially speed vaccine design testing aquaculture fish species authors published elsevier ltd
trichinella unique nematode developmental stages include adult worms newborn larvae muscle larvae besides humans parasite also infects many kinds animals including mice mice widely used animal model research fields immunology cell biology host parasite relationships trichinellosis different developmental stages trichinella share similar unique characteristics therefore important collect different sources trichinella derived materials research appropriate methods present study introduce methods collect trichinella different stages well products optimizing concentration artificial gastric juice volume medium time incubation collection vitro muscle larvae adult worms newborn larvae collected less contamination host materials products collected confirmed originally antigenic biologically active dna rna proteins isolated parasites collected confirmed applicable analyses including pcr real time pcr western blotting stimulators cell cultures macrophages splenocytes tumor cells present study compiled protocols collect materials trichinella provides reference research trichinella published elsevier ireland ltd
paper discusses effort enhance learning affective experience students laboratory module metabolism use people learn framework grounded educational theory research laboratory component systems physiology course biomedical engineering modified students educational experiences informed people learn principles students encountered traditional laboratory students compared number dimensions including knowledge acquisition ability use information solve problems transfer perceptions course experience several differences observed groups students people learn group performing controls measures required deeper ability use material differing basic acquisition information implications development similar laboratories discussed
previously reported expression protein enamel organ cells rat incisors originally isolated amyloid pindborg odontogenic tumors called apin aim present study characterize apin gene protein various species assess tissue specificity clarify localization within northern blotting pcr revealed expression apin highest gingiva moderate nasal salivary glands lowest epididymis protein sequences deduced cloned cdna rat mouse pig human aligned together obtained four mammal genomes apin highly conserved mammals absent fish birds amphibians comparative sids page analyses protein obtained bacteria transfected cells extracted eos indicated apin post translationally modified finding consistent presence predicted sites phosphorylation linked glycosylation rodent incisors apin detected ameloblast layer starting post secretory transition extending throughout maturation stage intense labeling visible golgi region well apices ameloblasts abutting enamel matrix apin also immunodetected epithelial cells gingiva bind tooth surface junctional epithelium presence apin cell tooth interfaces suggests involvement adhesive mechanisms active sites presence among epithelial tissues indicates apin likely possesses broader physiological roles
alpha amylase catalyses first step digestion starch main source carbohydrate human diet amylase present human saliva one first enzymes ever recognised many puzzles remain molecular mechanisms involved amylolysis starch even physiological role salivary amylase native starch granules represent formidable challenge attack enzyme solution moreover frequently reported differences susceptibility amylolysis starches various botanical species plus changes occur starch structure properties domestic commercial food processing means studies enzymology starch digestion challenging review molecular properties mammalian alpha amylase including genetics speculate role salivary amylase digestion dietary starch also considered enzyme kinetic approaches used vitro studies amylase digestion starches studies result better understanding reasons differences glycaemic responses humans following ingestion different starch containing foods
taxol paclitaxel approved drug food drug administration used treatment human cancers study aimed isolate determine different species native endophytic fungi iranian taxus baccata yew plants located northern forests iran novel molecular screening approach performed isolated endophytic fungi amplification exon taxadine synthase key gene taxol production pathway used effective colony polymerase chain reaction technique rapid screening potent taxol producing fungi instead genomic dna extraction production taxol performed batch culture selected fungi individually produced taxol assayed quantitatively high performance liquid chromatography using standard taxanes found six fungi could produce taxol baccatin iii interestingly days incubation highest level taxol found baccatin two native isolated cladosporium named fungal taxols could decrease cell viability mtt assay commercial taxol fungal taxols semi quantitatively showed antimitotic effects mcf cells human breast cancer cell line expression bcl anti apoptotic gene contrast bax pro apoptotic gene significantly decreased treatment standard fungal taxols fungal taxol produced simpler methods could significantly affect viability specific genes expression profile recommended using taxol producing fungi iranian yew could safe confident procedure overcome challenges using methods
metabonomics applied many bio related scientific fields nevertheless animal research works shown fail extended humans therefore essential figure suitable animal modeling mimic human metabolism animal findings serve humans study two kinds commonly selected body fluids serum urine humans various experimental animals characterized integration nuclear magnetic resonance nmr spectroscopy multivariate statistical analysis identify interspecies metabolic differences similarities baseline physiological status results highlight dairy cow pig may optimal choice transportation biodistribution studies drugs kunming mouse model may effective excretion studies drugs whereas sprague dawley rat could suitable candidate animal modeling overall considerations biochemical pathways analyses provide interconnection genetic evolution metabolic variations species evolution strongly affects microbial biodiversity consequently effects species specific biological substances biosynthesis corresponding biological activities knowledge metabolic effects species difference enable construction better models disease diagnosis drug metabolism toxicology research elsevier inc rights reserved
rna interference rnai technology successfully applied stacking resistance viruses numerous crop plants rnai production small interfering rnas sirnas template double standard rna dsrna derived expression constructs provides switch triggering homology based targeting cognate viral transcripts hence generating pre programmed immunity transgenic plants prior virus infection current study transgenic potato lines solanum tuberosum desiree generated expressing fused viral coat protein coding sequences potato virus pvx potato virus pvy potato virus pvs inverted repeat expressed constitutive promoter expression cassette designated designed generate dsrnas hairpin loop configuration transgene insertions confirmed glufosinate resistance gene specific pcr southern blotting regenerated lines assayed resistance virus inoculation two consecutive crop seasons nearly resistance pvx pvy pvs infection observed transgenic lines compared untransformed controls developed severe viral disease symptoms results establish efficacy rnai using coat protein gene potential target successful induction stable antiviral immunity potatoes
monoclonal integration bovine leukemia virus blv proviral dna bovine genomes detected peripheral blood two clinical cases enzootic bovine leukosis ebl without enlargement superficial lymph nodes blv specific probe hybridized ecori hindiii fragments atypical ebl cattle southern blotting hybridization well typical ebl cattle probe also hybridized large number ecori hindiii fragments cattle persistent leukosis results suggest detection monoclonal integration blv provirus host genome may serve marker monoclonal proliferation malignancy difficult diagnose ebl cattle words
phytohormone abscisic acid aba plays crucial roles adaptive responses plants abiotic stresses aba responsive element binding proteins arebs basic leucine zipper transcription factors regulate expression downstream genes containing aba responsive elements abres promoter regions novel abi like aba insensitive transcription factor gene named taabl containing conserved basic leucine zipper bzip domain cloned wheat southern blotting showed three copies present wheat genome phylogenetic analyses indicated taabl belonged areb subfamily bzip transcription factor family closely related zmabi maize osareb rice expression taabl highly induced wheat roots stems leaves aba drought high salt low temperature stresses taabl localized inside nuclei transformed wheat mesophyll protoplast overexpression taabl enhanced responses transgenic plants aba hastened stomatal closure stress thereby improving tolerance multiple abiotic stresses furthermore overexpression taabl upregulated downregulated expression stress related genes controlling stomatal closure transgenic plants aba drought stress conditions suggesting taabl might valuable genetic resource transgenic molecular breeding
pine pollen dispersal well studied century due ubiquity robust shape unusual longevity knowledge brought bear forest population genetics applications gene conservation programs pines high latitude wind pollinated species dispersal models shifting towards meso scale transport processes assert shift transport scale important population genetics assumptions inherent gene conservation decision making support comes following aerodynamic properties pollen akin spores seeds gradient free dispersal typical pollen transported meso scale distances importance vertically uplifted pollen meso scale transport overlooked interaction atmospheric processes yet understood fraction pine pollen retains capacity germination seed fertilization meso scale transport findings raise question whether forest fragmentation aligns genetics theory small populations question shapes situ situ collections shift meso scale transport pine pollen shape forest gene conservation decision making situ situ collection strategies
objectives pyrethroids applied insecticides throughout world human metabolism pyrethroids results urinary metabolites suitable biological monitoring aim study evaluate individual exposure due occupational application pyrethroids precondition assessment health risks methods thirty six workers applied insecticides pesticides germany collected samples urine used various pyrethroids alpha cypermethrin cypermethrin cyfluthrin deltamethrin tau fluvalinate permethrin lambda cyhalothrin agriculture greenhouses indoor pest control biological monitoring carried metabolites analysed urine samples cis dichlorovinyl dimethylcyclopropane carboxylic acid trans dichlorovinyl dimethylcyclopropane carboxylic acid cis trans cis dibromovinyl dimethylcyclopropane carboxylic acid cis phenoxybenzoic acid pba fluoro phenoxybenzoic acid fpba forty five urine specimens collected persons occupational exposure pyrethroids served controls concentrations related creatinine content expressed microgrammes per gramme creatinine results control urine samples revealed considerable background excretion pyrethroid metabolites general population percentile concentrations cis mug creatinine respectively fpba detected control urine found one sample within complete study occupational application pyrethroids highest concentrations metabolites urine samples detected within group indoor pest control operators maximum concentrations median values pba cis mug mug mug mug mug median detection limit respectively workers greenhouses excreted metabolites median concentrations follows mug mug cis mug pba medians metabolite concentrations specimens agricultural workers detection limit regard cis value mug pba pest control operators excreted significantly higher concentrations pba workers agriculture collective basis comparison excreted concentrations metabolites values acceptable daily intake adi pyrethroids set revealed amount pyrethroids taken occupational application considerably higher adi conclusions consequence conclude adverse health effects expected workers occupational exposure pyrethroids germany provided application carried properly good working practices need supported adequate supervision regard occupational hygiene medicine
rio janeiro inner coastal waters heavily impacted human sewage pollution decades enteric viruses including human adenoviruses hadv human enterovirus group rotavirus hepatitis virus hav likely found contaminated surface waters present work aimed assess frequency loads hadv species hav sand water samples venues used summer olympics tourists attending event sixteen monthly collections carried march july different sites rio janeiro brazil total thermotolerant coliform counting performed along molecular detection virus performed using quantitative polymerase chain reaction qpcr analyses samples investigated integrated cell culture pcr check presence hadv infectious virus particles results show water samples showed contamination least one type virus regarding viruses individually water sand respectively hadv hadv hav viral loads ranged water sand phylogenetic tree classified four main clusters referring species badv sites studied presented least presence infectious hadv contaminated points rodrigo freitas lagoon olympic rowing took place marina gloria starting point sailing races demonstrating serious problem fecal contamination water resources threatens health olympic athletes tourists residents elsevier rights reserved
objective telomeres regions ends chromosomes maintain chromosomal structural integrity genomic stability studies mainly older white populations shorter leukocyte telomere length ltl associated cardiometabolic risk factors increased risks mortality coronary heart disease chd average african americans afam longer ltl whites ltl chd relationship afam unknown investigated relationship ltl chd mortality among afam approach results using case cohort design postmenopausal women afam whites women health initiative ltl measured baseline blood samples southern blotting chd mortality hazards ratios estimated using race stratified risk factor adjusted cox proportional hazards models incident chd mortality events whites whereas afam experienced incident chd mortality events median follow years shorter ltl associated older age current smoking white race ethnicity whites kilobase decrease ltl associated increased hazard chd hazard ratio confidence interval association chd ltl afam white women shorter ltl higher risks mortality contrast shorter ltl weakly associated decreased mortality hazard afam conclusions one largest prospective studies ltl associations incident chd mortality racially diverse sample study suggests differences ltl associations chd mortality white afam postmenopausal women
formation primary shell vital process marine bivalves ocean acidification largely influences shell formation reported enzymes involved phenol oxidation tyrosinase phenoloxidases participate formation periostracum present study cloned tyrosinase gene crassostrea angulata named tyra potential function early larval shell biogenesis investigated tyra gene full length cdna size open reading frame size encodes amino acid protein includes amino acid putative signal peptide quantitative reverse transcription polymerase chain reaction qrt pcr analysis revealed tyra transcription mainly occurs trochophore stage tyra mrna levels ppm treatment group significantly upregulated early veliger larvae wmish electron scanning microscopy analyses showed expression tyra occurs gastrula stage thereby sustaining early veliger larvae shape signal saddle like similar observed electron scanning microscope furthermore rna interference shown treatment group higher deformity rate control thereby indicating tyra participates biogenesis primary shell conclusion results indicate tyra plays vital role formation larval shell participates response larval shell damages crassostrea angulata induced ocean acidification elsevier inc rights reserved
telomeres somatic cells become shorter individual aging however significant change subtelomeric methylation somatic cells aging yet reported telomere lengths peripheral blood cells normal japanese analyzed southern blotting using methylation sensitive insensitive isoschizomers aging long telomeres decrease short telomeres increase contents telomeres methylated subtelomere increase long telomeres thus leading postulate telomeres less methylated subtelomeres tend become shortened faster telomere length distribution analysis methylation sensitive insensitive isoschizomer seems useful tool assess subtelomeric methylation status somatic cell population subtelomeric methylation peripheral blood cells also indicated indicator aging associated genomic changes
intrahepatic cholangiocarcinoma icc aggressive malignancy associated unfavorable prognosis effective treatments available molecular pathogenesis poorly understood genome wide sequencing high throughput technologies provided critical insights molecular basis icc sparking heated debate cellular origin cancer exhibits variabilities origin progression cell biology recent evidence suggests icc multiple cellular origins including differentiated hepatocytes intrahepatic biliary epithelial cells ibecs cholangiocytes pluripotent stem cells hepatic stem progenitor cells hpcs biliary tree stem progenitor cells btscs peribiliary gland pbg however somatic mutagenesis epigenomic features highly cell type specific multiple cellular origins may profoundly different genomic landscapes key signaling pathways driving phenotypic variation thereby posing significant challenges personalized medicine terms achieving optimal drug response patient outcome considering information summarized latest experimental evidence relevant literature provide date view cellular origin icc contribute establishment hierarchical model carcinogenesis allow improvement anatomical based classification icc new insights important implications diagnosis treatment icc patients elsevier ireland ltd rights reserved
research last years cellular reprogramming enlightened magical potential micrornas mirnas changing cell fate somatic pluripotent recent investigations exploring role mirnas somatic cell reprogramming revealed target wide range molecules refine protein output leads fine tuning distinct cellular processes including cell cycle signalling pathways transcriptional activation silencing epigenetic modelling concerted actions mirna different pathways simultaneously strengthen transition differentiated differentiated state despite well characterized transcriptional epigenetic machinery underlying somatic cell reprogramming molecular circuitry mirna mediated cellular reprogramming rather fragmented review summarizes recent findings addressing role mirnas inducing suppressing reprogramming thus uncovering novel potentials mirnas regulators induced pluripotency maintenance establishment associated signalling pathways bioinformatic analysis sheds light various unexplored biological processes pathways associated reprogramming inducing mirnas thus helps identifying roadblocks full reprogramming specifically biological significance highly conserved studied mirna cluster mir reprogramming also highlighted roles mirnas differentiation neurons ipscs discussed recent approach direct conversion transdifferentiation differentiated cells neurons mirnas also elaborated approach widely gaining impetus generation neurological patient brain cells directly somatic cells efficient safe manner thus decoding intricate circuitry mirnas gene regulatory networks uncover novel pathways direct reprogramming somatic cells also open new avenues stein cell biology elsevier ltd rights reserved
induction detoxifying phase genes chemopreventive agents represents coordinated protective response oxidative stress neoplastic effects carcinogens earlier shown novel antioxidant bamboo leaves constituent caffeoyl methylquinic acid mcga induces heme oxygenase protects endothelial cells ros induced endothelial injury purpose study elucidate induction mechanism phase genes mcga human umbilical vascular endothelial cells huvecs using northern blotting pcr found treatment huvecs mcga increased dose time dependent manner steady state mrna levels selected phase genes including ferritin gamma glutarriylcysteine lygase glutathione reductase glutathione transferase dependent nrf nuclear translocation observed phase gene induction mcga found associated mcga inediated cytoprotective activity ros scavcnging potency increase cellular levels reduced gsh oxidized glutathione gssg interestingly exposure mcga resulted decreased ratio gsh gssg negatively related mrna level phase genes employing acetylcysteine gsh biosynthetic enzyme inhibitors well prooxidants hemin show decreased intracellular gsh gssg homeostasis least part may involved mcga rnediated phase gene induction nrf translocation although attenuation expression supports partial involvement jnk signaling elsevier inc rights reserved
site specific recombinases invaluable tools molecular biology emerging powerful recorders cellular events synthetic biology developed stringently controlled flp recombinase system escherichia coli using arabinose inducible promoter combined weak ribosome binding site elsevier rights reserved
background although trichinellosis known cause thrombotic disease serious thrombotic events rare previously associated trichinella nativa infection methods patient interviews medical chart reviews conducted men became ill following consumption common source black bear meat trichinella serology patient sera well polymerase chain reaction pcr larval identification meat samples conducted results exposed individuals developed acute illness clinically compatible trichinellosis characterized fever abdominal pain diarrhea along eosinophilia ranging within weeks diarrheal illness systemic symptoms developed exposed individuals characterized fever myalgia periorbital edema fatigue elevation myocardial infarction sinus venous tract thrombosis occurred complication trichinellosis patients acute serology nonreactive patients though convalescent serology reactive patients sera available multiplex pcr identified nativa bear meat corroborated microscopic larval identification conclusions report attack rate nativa bear meat among exposed demonstrate species cause serious thrombotic complications trichinellosis humans education hunters public regarding importance proper preparation wild game prior ingestion warranted
flow cytometry method widely used quantify suspended solids cells bacteria size range several tens micrometers diameter addition characterization forward sideward scatter properties enables use fluorescent labeled markers like antibodies detect respective structures using indirect antibody staining flow cytometry employed quantify birch pollen allergen precisely bet loaded particles diameter inhalable particulate matter particle size
flavivirus genome encodes seven non structural proteins nsps nsps believed involved genomic rna replication mechanism unclear find west nile virus wnv nsps capable self assembling membranous vesicles cells composed host endoplasmic reticulum membrane integrated viral nsa possibly nsa vesicles organize replication complex associated vesicles combine vesicle predicted components authentic associated vesicles observed cells transfected infectious wnv cdna well wnv replicon mutational analysis showed wnv deny heterologous polyproteins derived lethal chimeric recombinants produced abnormal vesicles site directed mutation either nsa nsa resulted failure viral rna replication caused immature vesicles findings reveal molecular composition assembly virus specific nanomachine confirm structures used viral rna replication
amyotrophic lateral sclerosis als neurodegenerative disorder primarily affects motor system presents progressive muscle weakness patients survive years disease onset often due failure respiratory muscles als familial disease similar patients remaining developing sporadic als past decade major advances made understanding genetics neuropathology als date around genes associated als common causes typical als associated mutations sod tardbp fus corf advances understanding genetic basis als led creation different models disease molecular pathways emerged systems heterogeneous previously anticipated ranging protein aggregation defects multiple key cellular processes neurons dysfunction surrounding non neuronal cells review different model systems used study als discuss contributed current knowledge als disease mechanisms better understanding emerging disease pathways detrimental effects various gene mutations causes underlying motor neuron denegation sporadic als accelerate progress development novel treatments
purpose characterize outer retina structure best vitelliform macular dystrophy bvmd determine effect macular lesions overlying adjacent photoreceptors methods five individuals bvmd followed prospectively spectral domain optical coherence tomography confocal nonconfocal split detector adaptive optics scanning light ophthalmoscopy aoslo aoslo cone photoreceptor mosaic images obtained within around retinal lesions cone density measured inside outside lesions subjects densities compared published measurements acquired similar years one subject imaged times month period results aoslo imaging demonstrated photoreceptor morphology within bvmd retinal lesions highly variable depending disease stage photoreceptor structure present even advanced disease aoslo imaging repeatable even severe disease short time long time intervals photoreceptor density normal retinal areas immediately adjacent lesions stable similar years mobile disk like structures possibly representing subretinal macrophages also observed conclusion combined confocal nonconfocal split detector aoslo imaging reveals substantial variability within clinical lesions stages bvmd longitudinal cellular photoreceptor imaging could prove powerful tool understanding disease progression monitoring emerging therapeutic treatment response inherited degenerations bvmd
abiotic stresses drought high salinity cold freezing lead plants produce excess reactive oxygen species catalase unique hydrogen peroxide scavenging enzyme plays important role plants characterize catalase involved plant response abiotic stresses constructed cdna library degrees treated festuca arundinacea schreb seedlings isolated catalase gene library cdna facat contained open reading frame blast analysis indicated deduced amino acid sequence showed identity wheat tacat identity maize zmcat northern blotting analysis showed obvious increase facat transcripts leaves contrast roots time course analysis expression facat arundinacea leaves showed facat expression upregulated cold salt stressed leaves facat transcripts accumulating mostly cold salt stress respectively significant changes facat transcription observed dried leaves inhibition facat transcription found abscisic acid aba treated leaves indicating facat gene differentially expressed cold high salt drought aba treatment arundinacea leaves
bringing knowledge enzymology research invivo insitu great importance understanding systems biology metabolic regulation central metabolic significance thiamin vitaminb diphosphorylated derivative thiamin diphosphate thdp fundamental differences thdp dependent enzymes metabolic networks mammals versus plants fungi bacteria health versus disease suggest enzymes promising targets biotechnological medical applications invivo action known regulators thdp dependent enzymes synthetic structural analogs enzyme substrates thiamin analyzed light enzymological data accumulated half century research mimicking enzyme specific catalytic intermediates phosphonate analogs oxo acids selectively inhibit particular thdp dependent enzymes selectivity use compounds cellular animal models thdp dependent enzyme malfunctions improves validity model predictive power compared nonselective enzymatically less characterized oxythiamin pyrithiamin invitro studies interaction thiamin analogs biological derivatives potential invivo targets necessary identify attenuate analog selectivity substrate thiamin synthetic analogs invitro reactivities potential targets highly relevant invivo however effective concentrations invivo often higher invitro studies would suggest significance specific inihibition thdp dependent enzymes development herbicides antibiotics anticancer neuroprotective strategies discussed
oryza meyeriana baill found immune xanthomonas oryzae oryzae xoo however genes responsible strong resistance unknown study suppression subtractive hybridization ssh utilized identify genes differentially expressed meyeriana xoo infection oryza meyeriana plants inoculated high pathogenicity races used tester non inoculated plants driver analysis ssh library revealed genes responsible cell wall lignifications may function block pathogen invasion also identified genes involved secondary metabolism systems eliminate damage caused chemicals peroxides cells one response genes encoding protein leucine rich repeats high similarity reported disease resistance genes analysed pcr northern blotting showed expression peaked xoo infection suggesting may function later stage plant responses study would help demonstrate molecular mechanism meyeriana strong resistance xoo find new disease resistance candidate genes
mitochondrial dna mtdna variation implicated many common complex diseases inconsistent contradicting results common introduce novel mutational load hypothesis also considers collective effect mainly rare variants utilising mutpred program apply new methodology investigate possible role mtdna two cardiovascular disease cvd phenotypes hypertension hyperglycaemia within two population cohort mean age yrs studies looked african mtdna variation context complex disease none using complete sequence data well phenotyped cohort study also extend knowledge african mtdna variation complete sequences southern africans especially represented cohort showed prevalence rates hypertension prediabetes could identify statistically significant role mtdna variation association hypertension hyperglycaemia cohort however opinion method described find wide application field especially useful cohorts multiple locations variety mtdna lineages traditional haplogroup association method particularly likely generate spurious results context association common complex disease copyright institute genetics developmental biology chinese academy sciences genetics society china published elsevier limited science press rights reserved
aberrant expression micrornas correlates development progression human cancers targeting downstream proteins mir downregulated ovarian cancer clear cell papillary renal cell carcinoma however role glioma remains unknown purpose study determine expression role mir elucidate regulatory mechanism glioma used quantitative real time polymerase chain reaction measure mir expression glioma tissues cell lines findings showed mir expression decreased dramatically clinical glioma tissues cell lines mir expression inversely correlated expression raba using bioinformatics luciferase reporter assays identified raba novel direct target mir vitro overexpression mir inhibited glioma cell proliferation induced endoplasmic reticulum stress apoptosis targeting raba whereas suppression mir promoted cell proliferation inhibited endoplasmic reticulum stress apoptosis similarly silencing raba small interfering rna also suppressed glioma cell growth induced endoplasmic reticulum stress apoptosis taken together data indicate mir suppresses proliferation induces endoplasmic reticulum stress apoptosis targeting inhibiting raba glioma cells results suggest mir potential therapeutic target treatment glioma patients
aldolases catalyze reversively aldol condensation reaction living organisms among fructose bisphosphate aldolase fbpa widely distributed fbpa classically divided two classes recently investigation fbpa archaea hyperthemophiles represent primitive form life growing chemoautotorphically utilizing gluconeogenesis pathway revealed successively new types fbpas especially discovery novel bifunctional fbpa functioning micro conformational change made break one enzyme one reaction dogma review summarizes briefly enzymology fbpa classical view latest
human sialidase neu cytoplasmic sialidase degrades sialylglycoconjugates including glycoproteins gangliosides via hydrolysis terminal sialic acids produce asialo type molecules first report inhibitory effects series synthetic sialyldendrimers comprising three types dumbbell neuac fan neuac ball neuac toward recombinant human neu vitro among dumbbell neuac exhibited potent inhibitory activity concentration causing inhibition similar addition neuslac neuscel carrying thiosialyltrisaccharide moieties exhibited potent inhibitory effects neusgal neusglc carrying thiosialyldisaccharides docking models composed neu thiosialyloligosaccharide suggested active pocket neu prefers second galactose beta gal beta glucose beta glc beta residue trisaccharide structure hydrogen bond hydroxy group second gal beta side chain residue neu third glc beta residues neuslac neuscel also predicted stabilized hydrogen bonds side chains residues neu neu mutants exhibited reduced affinity neuslac carrying thiosialyltrisaccharide moieties suggesting significant roles residues recognition thiosialyltrisaccharide moieties neuslac bound active pocket neu thus present sialyldendrimers could utilized new class neu inhibitors also molecular probes evaluating biological functions neu including catalytic activity mechanism natural substrates carrying sialyloligosaccharides
anomalous distribution adhesive proteins throughout cell surface mycobacterium tuberculosis contribution cell surface adhesion host pathogen interaction remain elusive completion tuberculosis genome sequence analysis gives interesting information polymorphic rich repetitive sequence pgrs subfamily tuberculosis encodes fibronectin binding proteins fnbp extensively studied function pathogenesis proteins remains unknown unclear review addresses tuberculosis entry mechanism host cell particular effort made focus several aspects association fnbp encodes pgrs protein family tuberculosis host pathogen interactions effect calcium ions outside host cell overriding maintenance calcium trafficking phagocytosis furthermore fnbp may potential source antigenic variation participating evoking immune response tuberculosis entry mechanism major influence alone involvement calcium ions perhaps shed light host pathogen interaction relationship could open new avenues development novel drug targeting tuberculosis fnbp blockade selective adhesions could useful therapeutics international union biochemistry molecular biology inc volume number pages
background october pharmacist driven stewardship program implemented brigham women hospital ensure continued adherence prescribing guideline focusing indications intravenous immune globulin ivig use dosing per ideal body weight objective primary objective describe ivig stewardship program tertiary academic medical center methods prospective observational study january december patients ordered receive ivig defined study period included intervention assessed describes pharmacist driven ivig stewardship program medication approval primary end point guideline compliance based indication dose dosing weight frequency secondary end points included number patients receiving ivig indications orders discontinued result guideline nonadherence total amount dispensed results total patients identified study time frame top indications hypogammaglobulinemia bone marrow transplantation hematological malignancy acute solid organ rejection immune thrombocytopenia bleeding patients received ivig indication nonadherent ivig prescribing guideline patients patients respectively received different dose frequency per prescribed indication orders indications nonadherent guideline discontinued total ivig dispensed study period conclusions ivig stewardship program including institution specific prescribing guideline pharmacist driven stewardship program may ensure guideline compliance appropriateness indication dose academic medical center
objective arginine specific cysteine proteases rgps porphyromonas gingivalis important virulent factors periodontal diseases however therapeutic drug inhibits proinflammatory events induced enzymes study investigated proinflammatory activities rgps activated coagulation factor fxa examined effect new selective inhibitor fxa proinflammatory events induced proteinases methods human gingival fibroblasts stimulated rgps fxa presence absence interleukin matrix metalloproteinase mmp release mrna expression nuclear factor kappa kappa activation assessed using enzyme linked immunosorbent assay elisa northern blotting gel mobility shift method respectively results rgps fxa activated mmp release human gingival fibroblasts amidolytic activities mitogen activated protein kinase mapk kappa dependent manners inhibited fxa mduced mrna expression kappa activation inhibited amidolytic activities fxa rgps vitro vivo conclusion rgps fxa potent inflammatory mediators may useful therapeutic drug periodontal disease
transformation research biological fields necessitates design analysis interpretation large data sets preparing students requisite skills experimental design statistical analysis interpretation mathematical reasoning require curricular reform faculty willing able integrate mathematical statistical concepts life science courses new faculty learning community flc constituted year four years assist transformation life sciences curriculum faculty large midwestern research university participants interviewed participation surveyed participation assess impact flc attitudes toward teaching perceived pedagogical skills planned teaching practice overall flc meaningful positive impact participants attitudes toward teaching knowledge teaching perceived pedagogical skills interestingly confidence viewing classroom site research teaching declined implications creation development flcs science faculty discussed international union biochemistry molecular biology
chen chen thomas kozma harris kinase knockout inhibits uninephrectomy diabetes induced renal hypertrophy physiol renal physiol first published may doi ajprenal removal one kidney stimulates synthesis rna protein minimal dna replication nephron segments remaining kidney resulting cell growth increase cell size minimal cell proliferation increase cell number addition compensatory renal hypertrophy caused nephron loss pathophysiological renal hypertrophy occur consequence early uncontrolled diabetes however molecular mechanism underlying renal hypertrophy conditions remains unclear present study report deletion kinase inhibited renal hypertrophy seen following either contralateral nephrectomy induction diabetes wild type mice hypertrophic stimuli increased phosphorylation ribosomal protein rps known target immunoblotting analysis revealed mice exhibited moderately elevated basal levels rps increase response hypertrophic stimuli northern blotting indicated moderate upregulation expression kidneys mice phosphorylation eukaryotic translation initiation factor binding protein another downstream target mammalian target rapamycin mtor stimulated equivalent levels littermates renal hypertrophy indicating mtor still activated mice highly selective mtor inhibitor rapamycin inhibited increased phosphorylation rps blocked hypertrophy seen wild type mice failed prevent similar hypertrophy seen mice response uninephrectomy unx although inhibit basal rps phosphorylation thus present study provides first genetic evidence plays major role development compensatory renal hypertrophy well diabetic renal hypertrophy indicates unx diabetes mediated mtor activation selectively activate without activating
cotton gossypium fiber unique experimental system studying plant cell elongation cell wall biogenesis arabinogalactan proteins agps extracellular proteoglycans play important roles various aspects plant growth development present work four agp genes ghagp ghagp ghagp ghfla cloned cotton fiber rapid amplification cdna ends race genes code classical agps containing terminal signal sequence central domain rich ala ser thr pro hyp terminal hydrophobic transmembrane domain additionally four putative proteins contain two agp like domains one fasciclin like domain putative terminal glycosylphosphatidylinositol lipid anchor signal sequence northern blotting analysis gene specific probes indicates transcripts ghagp ghfla accumulate gossypium hirsutum fiber days post anthesis whereas ghagp ghagp abundantly expressed developmental stage switching elongation secondary cell wall synthesis furthermore quantitative reverse transcription polymerase chain reaction analysis demonstrates fasciclin like agp genes specifically expressed hirsutum fibers also gossypium barbadense fibers fasciclin like domains typically found adhesion proteins animal cell specific expression patterns together presence fasciclin like domains suggest roles fasciclin like agps cell cell communication cotton fiber elongation secondary cell wall development
micrornas mirs investigated novel class regulators cellular processes including proliferation apoptosis metabolism particular mir demonstrated deregulated certain types cancer including lung colorectal gastric cancer previous studies mir renal clear cell carcinoma demonstrated expression level mir associated distant metastasis however function mir renal cell carcinoma rcc remained elucidated present study expression mir paired rcc tissues four cell lines achn detected reverse transcription quantitative polymerase chain reaction addition effect mir cell proliferation rcc cells also determined using mtt cell counting kit assay analyses furthermore function mir cell migration invasion determined wound scratch transwell assays flow cytometry also performed quantify effect mir cell apoptosis results current study indicated mir upregulated rcc tissues affected cell lines compared adjacent normal tissues normal kidney cell line different downregulation mir observed types cancer mir associated rcc cell proliferation invasion migration apoptosis indicated mir acts oncogene rcc best knowledge present study first demonstrate upregulation mir rcc tissues describe mir oncogene rcc regulation cell proliferation migration invasion apoptosis studies define target gene mir rcc investigate potential role mir biomarker rcc
reverse transcription quantitative real time polymerase chain reaction qrt pcr technique become one widely used reliable methods gene expression studies successful application qrt pcr requires accurate quantification relative transcript levels strongly depends expression stability reference genes used internal controls data normalization plums prunus salicina lindl among numerous commercial important fruit trees order ensure reliability gene expression analyses using qrt pcr plum molecular biology research candidate reference genes selected relative expression levels measured qrt pcr using samples plum peels obtained via different postharvest processes three statistical algorithms genorm normfinder bestkeeper employed assess expression stability candidate gene comprehensive evaluation generated overall analysis approach reffinder infer final rankings results showed cac stably expressed candidate reference gene across experimental conditions cac unk room temperature treatment cac act clath cold treatment cac act treatments suitable accurate gene expression quantification addition relative gene expression patterns plant anthocyanin biosynthesis related structural gene psans evaluated using selected housekeeping genes internal controls two treatments confirm usefulness selected reference genes results indicated selection systematically validated reference genes specific experimental conditions necessary avoid misinterpretation qrt pcr data obtain accurate reliable gene expression results elsevier rights reserved
many studies use strategies allow identification large number genes expressed response different stress conditions plant subjected throughout cycle order obtain accurate reliable results gene expression studies necessary use reference genes must uniform expression majority cells organism studied rna isolation leaves expression analysis real time quantitative polymerase chain reaction qpcr carried study nine candidate reference genes tested actin act ubiquitin conjugated enzyme ubc glyceraldehyde phosphate dehydrogenase gapdh beta tubulin beta tubulin eukaryotic initiation factor alpha eif alpha ubiquitin ubq ubiquitin ubq aquaporin tip tip like cyclophilin two genotypes rice cambara brs querncia different levels soil moisture recovery vegetative reproductive stages period preceding flowering currently different softwares perform stability analyses define suitable reference genes particular study study used five different methods genorm bestkeeper delta method normfinder reffinder results indicate ubc ubq used reference genes samples softwares evaluated genes beta tubulin eif alpha traditionally used reference genes along gapdh presented lower stability values gene expression basic leucine zipper bzip bzip used validate selected reference genes demonstrating use inappropriate reference induce erroneous results
aim dengue virus responsible high worldwide incidence infections aggravated late diagnosis often confused tropical diseases results methodology oligonucleotide aptamers binding utr dengue virus selected eight rounds systematic evolution ligands exponential enrichment technology analyzed dot blot assay silico prediction secondary structures demonstrating presence stem loops may potential interaction viral genome lead loss original conformation conclusion first description rna aptamers functional rna elements dengue virus genome implications disease control may potential tools future antiviral therapies diagnostics
metabolism aldehyde oxidase responsible number drug failures clinical trials main reason clearance values drugs metabolized underestimated allometric scaling preclinical species furthermore vitro human data also underestimates clearance developed first silico models predict vitro vivo human intrinsic clearance drugs two chemical descriptors models explain large amount variance data using two computational estimates electronic steric features reaction vivo computational models human metabolism better vitro preclinical animal testing predicting human intrinsic clearance thus appears amenable computational prediction rates may used guide drug discovery predict pharmacokinetics clinical trials
fresh frozen thawed muscle samples four year old roe deer capreolus capreolus sondrio province north eastern italy examined dissecting microscope sarcocysts isolated identified morphological type wet mounts light microscopy seventy seven sarcocysts subsequently examined molecular methods comprising polymerase chain reaction pcr amplification sequencing partial cytochrome oxidase subunit gene cox isolates well pcr amplification cloning sequencing completes ribosomal rna rrna gene two isolates species found three major sarcocyst types recognised spindle shaped sarcocysts long either clearly recognisable protrusions thin walled finger like protrusions thick walled slender thread like sarcocysts long hair like protrusions sequencing cox revealed sarcocysts belonged four different species visible protrusions either belonged sarcocystis gracilis sarcocystis taeniata like species whereas finger hair like protrusions belonged sarcocystis silva sarcocystis capreolicanis respectively cox sequences taeniata like species comprising five haplotypes differed nucleotide positions identity differed previous cox sequences taeniata moose sika deer intraspecific identity nucleotide positions interspecific identity fixed nucleotide differences two populations phylogenetic analysis based cox sequences two populations formed two separate monophyletic clusters taeniata like species roe deer therefore considered represent separate species named sarcocystis linearis rrna gene however two species could clearly separated thus considerable intraspecific sequence variation rrna gene linearis identity sequences similar magnitude nature variation previously found gene taeniata new rrna gene sequences linearis shared identity taeniata overlap intra interspecific identity phylogenetic tree sequences two species interspersed scanning electron microscopy sem sarcocysts linearis found possess regularly spaced thin narrow ribbon like cyst wall protrusions long wide thick terminating plate like structure thickness elliptic outline wide long terminal plates connected middle band like portion protrusions like board seesaw tilting board terminal plates adjacent protrusions neatly arranged hexagonal pattern resembling tiles roof together formed outer roof like layer facing surrounding cytoplasm host cell completely covering band like proximal portion protrusions overlapped stacked three four layers close cyst surface sarcocyst morphology linearis consistent unnamed sarcocystis roe deer previously found transmission electron microscopy several countries including italy sarcocysts gracilis silva also examined sem confirming presence regularly distributed short knob like protrusions gracilis seen previous sem studies revealing tightly packed erect long villus like protrusions regularly distributed round depressions surface silva sequencing cox new isolates capreolicanis gracilis silva respectively recovered new haplotypes three species expanded knowledge intraspecific sequence variation marker similarly study revealed extensive intragenomic sequence variation rrna gene capreolicanis silva known previous studies confirmed near absence variation rrna gene gracilis
background treponema denticola strongly associated development periodontal disease synergistic antagonistic effects observed among bacterial species process biofilm formation bacteriocin related genes yet fully characterized periodontopathic bacteria aim study detect characterize bacteriocin associated proteins denticola methods whole genome sequence denticola atcc screened streptococcus mutans bacteriocin immunity protein imma bip sequence prevalence homologous genes denticola strains investigated southern blotting expression genes evaluated qrt pcr results genome sequence denticola amino acid sequence coded open reading frame tde showed identity mutans imma furthermore two protein sequences encoded tde tde denticola atcc showed similar identity coded tde therefore tde tde tde designated tepa respectively open reading frames showing similarity hlyd family secretion proteins detected downstream tepa designated tepb respectively gene harboring bacteriocin like signal sequence detected upstream tepa prevalence tepa differed among treponema species susceptibility chloramphenicol ofloxacin slightly decreased tepa mutant kanamycin increased expression tepa increased tepa mutant conclusion results indicate denticola atcc three potential bacteriocin export proteins presence genes differs among treponema strains tepa corresponding proteins may involved resistance chloramphenicol
aimadipose tissue important function total energy homeostasis dysregulation may contribute lifestyle related diseases type diabetes cancer cardiovascular diseases aim study investigate genome wide mrna expression adipose tissue healthy men exercise intervention identify genes pathways mediate beneficial effect regular exercise also investigated difference adipose tissue mrna expression individuals without family history type diabetes methodsthe month supervised exercise intervention conducted healthy men age years bmi kgm previous low level physical activity rna analysed using genechip human gene arrays affymetrix exercise resultswe identified significant transcripts differentially expressed exercise false discovery rate fdr including genes encoding respiratory chain histone subunits small nucleolar rnas ribosomal proteins additionally pathways enriched response exercise include ribosome oxidative phosphorylation proteasome many metabolic pathways whereas wnt mapk signalling pathways regulated fdr exercise significant differences mrna expression individuals without family history type diabetes conclusionexercise increased expression genes involved oxidative phosphorylation opposite seen adipose tissue elderly obese individuals low physical fitness study thereby demonstrates mechanism beneficial effect exercise
aim present investigation determine expression fas receptor ligand system established cell tines squamous cell carcinomas head neck scchn study functional impact chemotherapy induced apoptosis scchn cell lines observed constitutive expression fas fasl scchn cell lines pcr southern blotting immunocytochemistry respectively administration agonistic fas antibody led significant reduction viable cells colorimetric mtt assay cell tines tested preincubation interferon gamma ifn gamma rendered primarily resistant cell tines sensitive cisplatin cddp bleomycin blm caused dose dependent cytotoxicity cell lines determined inhibitory concentration induction apoptosis furthermore antineoplastic agents led enhanced surface expression fas fasl cell lines effect independent respective status upregulation fas fasl surface expression increased preexisting fas sensitivity failed make primarily resistant cell tines undergo fas mediated growth reduction apoptosis vice versa blockade fas receptor ligand interactions monoclonal antibodies directed fasl able attenuate cytotoxic effect cddp blm cell lines tested conclusion contrast many solid tumors fas fasl system seem play exclusive rote anticancer drug mediated apoptosis scchn elsevier ltd rights reserved
protein consensus based surface engineering procos simple efficient method directed protein evolution combining computational analysis molecular biology tools engineer protein surfaces procos based hypothesis conserved residues originated common ancestor residues crucial function protein whereas highly variable regions situated surface protein targeted surface engineering maximize performance procos comprises four main steps identification conserved highly variable regions protein sequence design substituting residues highly variable regions gene synthesis iii vitro dna recombination synthetic genes screening active variants procos simple method surface mutagenesis multiple sequence alignment used selection surface residues based structural model demonstrate technique utility directed evolution surface phytase enzyme yersinia mollaretii ymphytase subjected procos screening clones procos engineering guided mutant libraries yielded enzyme amino acid substitutions surface engineered ymphytase exhibited fold higher stability retained enzyme specific activity compared wild type ymphytase stability might attributed significantly increased percentage points number negatively charged amino acids surface engineered phytase
craniofacial bone defects challenging problems maxillofacial surgeons years development cell molecular biology gene therapy breaking new technology aim regenerating tissues acting delivery system therapeutic genes craniofacial region rather treating genetic disorders systematic review conducted summarizing articles reporting gene therapy maxillofacial surgery answer question gene therapy successfully applied regenerate bone maxillofacial region electronic searching online databases performed addition hand searching references included articles nolanguage time restrictions enforced meta analysis done assess significant bone formation delivery gene material surgically induced maxillofacial defects search identified articles included animals bone morphogenetic proteins commonly used proteins gene therapy viral vectors universally used vectors sprague dawley rats frequently used animal model experimental studies quality articles ranged excellent average meta analysis results performed articles showed defects favored bone formation gene therapy funnel plot showed symmetry absence publication bias gene therapy top list innovative strategies developed last years hope developing simple chair side protocol near future combining improvement gene delivery well knowledge molecular basis oral maxillofacial structures
background telomere length putative biomarker ageing morbidity mortality application hampered lack widely applicable reference ranges uncertainty regarding present limits measurement reproducibility within laboratories methods instigated international collaborative study telomere length assessment different laboratories employing different techniques southern blotting single telomere length analysis stela real time quantitative pcr qpcr performed two rounds fully blinded measurements human dna samples per round enable unbiased assessment intra inter batch variation laboratories techniques results absolute results different laboratories differed widely could thus compared directly rankings relative telomere lengths highly correlated correlation coefficients intra technique correlations similar southern blotting qpcr stronger inter technique ones however inter laboratory coefficients variation cvs averaged southern blotting stela qpcr difference compensated higher dynamic range qpcr method shown equal variance scoring technical variation per laboratory measured median intra inter batch cvs ranged differences laboratories marginally significant gel based pcr based techniques different accuracy conclusions intra inter laboratory technical variation severely limits usefulness data pooling excludes sharing reference ranges laboratories propose establish common set physical telomere length standards improve comparability telomere length estimates laboratories
innovation present drug design focuses new targets however compound efficacy safety human metabolism including toxicity pharmacokinetic profiles target selection criteria determine drug candidates enter clinic systems biology approaches disease developed idea disease perturbed regulatory networks differ normal counterparts microarray data analyses reveal global changes gene protein expression response genetic environmental changes accordingly well suited construct normal disease perturbed drug affected networks useful drug discovery pharmaceutical industry integration modelling microarray data systems biology approaches allow true breakthrough silico absorption distribution metabolism excretion toxicity assessment drug design therefore drug discovery systems biology means microarray analyses could significantly reduce time cost new drug development
arabidopsis vacuolar antiporter gene atnhx introduced soybean agrobacterium mediated transformation four independent kanamycin resistant lines obtained result pcr southern blotting northern blotting analyses demonstrated atnhx gene successfully inserted soybean genome stably expressed kanamycin resistant lines stability atnhx expression salt resistance evaluated soybean transformants generations two independently derived transgenic lines high expression level atnhx selected propagated generation absence selection pressure pcr pcr examinations revealed atnhx highly expressed investigated transgenic progenies furthermore transgenic plants showed resistant salt stress homozygous plants taken together results indicated constitutive expression atnhx enhanced salt tolerance soybean generations suggesting great potential use atnhx improving salt tolerance plants genetic engineering
background nuclear factor kappab kappa transcription factor abundantly expressed many tumors regulates many tumor relative genes myc caspase kappa mediated genes activation serves anti tumor pathway regulating expression tumor relative genes given important roles genes tumor control present study test hypothesis kappa decoy odns transfected tumor cells vitro vivo might affect growth apoptosis methods first kappa decoy oligodeoxynucleotides designed according kappa elements promoter region myc gene supression effects decoy odns proliferation five carcinoma cell lines assessed mtt assay apoptosis carcinoma cells determined chromosome dna ladder flow cytometric analysis fcm thirdly suppression effects kappa decoy odns proliferation carcinoma vivo investigated nude mice confirm mechanisms action pgl myc luciferase expression vector containing fragment myc promoter constructed transfected kappa decoy odns skov cells lipofectaminetm expression levels endogenous myc caspase genes assessed northern blotting lastly nuclear extracts prepared skov cells dna protein interactions examined electrophoretic mobility shift assay emsa results treatment cancer cell lines kappa decoy odns resulted strong suppression proliferation especial skov ovarian cancer cell line vitro vivo induction apoptosis skov observed dna gel electrophoresis fcm activity luciferase significantly reduced kappa decoy transfected cells cells transfected control decoy furthermore found transcripts endogenous myc gene reduced caspase transcripts induced emsa demonstrated specific binding kappa decoy kappa protein conclusions findings indicatd kappa activation plays important role proliferation many cancers esspecially ovarian carcinomas inhibitors kappa may thus offer promise therapeutic approach treatment tumors via manipulating expression desired target genes kappa decoy odns may allow development therapeutic investigative tools human malignancies
transgenic animals used previously study gene function produce important proteins generate models study human diseases number transgenic species increases reliable detection molecular characterization integration sites copy number crucial confirming transgene expression genetic stability well safety evaluation meet commercial demands study generated four transgenic goats somatic cell nuclear transfer scnt birth cloned goat contained transferred insulin like growth factor igf gene initially confirmed using polymerase chain reaction pcr based method four cloned goats identified igf transgenic goats southern blotting number copies igf gene transgenic goats determined additionally four integration sites transgene transgenic goats modified thermal asymmetric interlaced tail pcr method identified four different integration sites located chromosomes present study identified copy number integration sites using quantitative pcr qpcr tail pcr enabling bio safety evaluation transgenic goats
uveal melanoma common intraocular malignancy arises melanocytes iris ciliary body choroid early diagnosis local treatment crucial survival correlates primary tumor size however approximately patients develop metastatic disease months survival metastatic diagnosis genomic analyses led development gene expression profiles effectively predict metastatic progression unfortunately adjuvant therapy shown prolong survival date new insights molecular biology found frequent activating mutations genes encoding protein subunit gnaq gna improved understanding downstream signaling pathways mapk pik akt hippo afforded array new targets treatment disease studies way rationally developed regimens targeting pathways novel agents development review diagnosis management surveillance primary adjuvant therapy trials way
human genetic studies continuing increase size scale availability well phenotyped longitudinal cohorts remains rare significant infrastructure investment effort required establish maintain high quality cohorts biobanking genetic consent repeated clinical data measurements australia currently two cohorts established monash university part community based clinical trials elderly studies involve capture demographic mood cognitive performance physical function neuroimaging audiometry various clinical data types average years aspirin reducing events elderly aspree cohort comprised australians aged years americans aged years recruited randomised either daily low dose aspirin placebo examine preventative benefit aspirin range clinical outcomes statins reducing events elderly staree study uses similar model currently recruiting men women aged years across australia randomised either low dose statins placebo cohorts involve biobanking consent genetic research recruitment network general practitioners community combination whole genome targeted sequencing approaches allow gene phenotype relationships explored within context detailed longitudinal data genetic risk factors late onset high burden conditions cardiovascular disease dementia investigated plus research areas healthy ageing disease resilience possible due unique phenotypes health
glioma still difficult treat high malignancy high recurrence rate high resistance anticancer drugs alternative method research gliomagenesis drug resistance use vitro tumor model closely mimics vivo tumor microenvironment study established bioprinted glioma stem cell model using modified porous gelatin alginate fibrinogen hydrogel mimics extracellular matrix glioma stem cells achieved survival rate proliferated high cellular activity immediately following bioprinting vitro culture period printed glioma stem cells maintained inherent characteristics cancer stem cells nestin also showed differentiation potential glial fibrillary acidic protein beta tubulin iii order verify vascularization potential glioma stem cells tumor angiogenesis biomarker vascular endothelial growth factor detected immunohistochemistry expression increased week one three culture period drug sensitivity results showed printed tumor model resistant temozolomide monolayer model tmz concentrations summary bioprinted glioma model provides novel alternative tool studying gliomagenesis glioma stem cell biology drug resistance anticancer drug susceptibility vitro
skin serve interstitial reservoir local tissue accumulation increases age inflammation infection increased local availability favors pro inflammatory immune cell function dampens anti inflammatory capacity review summarize available data nacl affects various immune cells particularly focus salt promotes pro inflammatory macrophage cell function simultaneously curtails regulatory anti inflammatory potential overall findings demonstrate local availability promising novel regulator immunity hence modulation tissue levels bears broad therapeutic potential increasing local availability may help treating infections lowering tissue levels may used treat example autoimmune cardiovascular diseases
paper describe multiplex time reducing quantitative polymerase chain reaction qpcr method determination telomere length multiplex qpcr assay enables two pairs primers simultaneously amplify telomere single copy gene albumin templates thus reducing analysis time labor compared previously established singleplex assay chemical composition master mix primers telomere albumin systematically optimized thermal cycling program designed ensure complete separation melting processes telomere albumin semi log standard curves dna concentration versus cycle threshold established linear relationship fold dna concentration range well performed intra assay rsd range inter assay rsd range reproducibility demonstrated ensure measurement stability using wild type lewis lung carcinoma liver carcinoma cbl mouse models significantly different telomere lengths among different dna samples observed wild type mice however relative telomere lengths tumor dna two strains tumor bearing mice significantly shorter lengths surrounding non tumor dna tumor bearing mice tissue dna wild type mice results suggest shortening telomere lengths may regarded important indicator cancer control prevention quantification telomere lengths confirmed traditional southern blotting method method could successfully used reduce time needed rapid precise measurement telomere lengths biological samples
purpose review kruppel like factors klfs family transcription factors regulate integral functions endothelial cells including inflammation proliferation growth apoptosis cell differentiation plasticity migration review focus role klfs physiological activity loss vascular pathology recent findings new studies pointed role micrornas repressors klfs atherosclerotic areas providing another level signaling regulation klfs summary klfs important regulators almost facets endothelial biology making promising therapeutic target treatment endothelial dysfunction cardiovascular disease research needed fully characterize functions
colon cancer one reasons cancer death worldwide thus important find new prognostic diagnostic marker well throw light special metabolic pathways colon cancer cells paper highlights first time qualitative differences profiles volatile metabolites colon cancer cell lines grade duke grade duke among comparison normal colon cell line ncm mostly represented ketones alcohols results obtained applying solid phase micro extraction spme combined gas chromatography mass spectrometry consistent warburg hypothesis found reaction products may indicate cancer cells show crabtree effect furthermore compounds like undecan pentadecan one associated first time human metabolism summary findings indicate metabolism colon cancer cells differs extremely metabolism healthy cells changes progress disease compounds present breath blood tissue patients represent differences serve new biomarker colon cancer future
using reverse transcriptase polymerase chain reaction pcr cdna encoding new isoform myocyte enhancer factor bmef cloned brain strain liangguang bombyx mori open reading frame orf new isoform shows nucleotides absence gcactcacaaag three nucleotides mutation former bmef genbank thus named bmefb genbank using swiss model prediction server structure bmefb modeled two turns three helixes predicted bmefb pattern bmefb mrna detected central nervous system cns including brain suboesophageal ganglion thoracic ganglion abdominal ganglion non neural tissues midgut fat body epidermis muscle ovary bmefb mrna content brain measured using combined method quantitative pcr southern blotting kept consistently high larvae adults
significant breakthrough plant biotechnology development techniques transform genes unrelated sources commercially important crop plants develop resistance insect pests local cotton cultivar mnh transformed agrobacterium tumefaciens strain assisted bombardment tungsten particles agrobacterium strain contained recombinant binary vector pkmab harboring crylab promoter neomycin phosphotransferase nptii gene used selectable marker concentration transformation efficiency remained primary transformants analyzed transgene integration expression pcr southern blotting western dot blot gene copy number determined southern analysis order find crylab integration sites protein produced transgenic plants quantified using imagequant software ranged total protein positive plant seeds obtained progeny raised greenhouse field conditions evaluate field performance leaf biotoxicity assays performed determine efficacy introduced gene results showed transgenic lines progeny appreciable level resistance lepidopteran pests green house field conditions
backgroundamyotrophic lateral sclerosis als neurodegenerative disease characterized degeneration motor neurons date genes implicated als therefore heterogenous genetic background als requires comprehensive genetic investigative approaches methodsin study dna hungarian als patients subjected targeted high throughput sequencing coding regions three mendelian als genes fus setx corf resultsa novel heterozygous missense mutation setx gene identified female patient presenting atypical als phenotype including adult onset lower motor neuron impairment mutations detected mendelian als genes investigated conclusionour study contributes understanding genetic phenotypic diversity motor neuron diseases mnds results also suggest elucidation genetic background mnds requires complex approach including screening mendelian non mendelian genes
long noncoding rnas lncrnas regarded nonfunctional products transcription effects gradually elucidated evidence suggests lncrnas play crucial roles cell biology especially regulating gene expression however diversity complexity regulatory mechanisms knowledge function lncrnas represents tip iceberg recent studies shown lncrnas capable regulating cell differentiation pluripotency thus consider appropriate time review progress understanding role lncrnas two biological processes review biological characteristics regulatory mechanisms lncrnas chromatin remodeling level transcriptional level post transcriptional level described recent advances comprehension role lncrnas cell differentiation pluripotency discussed
present knowledge cell organization function based molecular genetic methods well cytological investigations electron microscopy allows identifying cell substructures resolution similar resolution fluorescence microscopy restricted similar due diffraction limit light however advantage technique possibility identify localize specifically labeled structures molecules recently developed super resolution microscopy techniques structured illumination microscopy photoactivated localization microscopy stochastic optical reconstruction microscopy stimulated emission depletion microscopy allow analyzing structures molecules beyond diffraction limit light recently increasing application techniques cell biology review evaluates summarizes especially data achieved analyzing organization function plant cells chromosomes interphase nuclei using super resolution techniques
four creer lines commonly used auditory field label cochlear supporting cells scs expressed multiple subtypes lines also showing reporter expression hair cells hcs hypothesized altering tamoxifen dose would modify creer expression target subsets scs also used two different reporter lines rosa tdtomato cag egfp achieve goal results confirm previous reports sox creert fgfr icreer expressed neonatal scs also hcs decreasing tamoxifen dose reduce expression sox creert changing cag egfp reporter decreased reporter positive hcs sevenfold however also significant decrease number reporter positive scs contrast large reduction reporter positive hcs fgfr icreer mice lowest tamoxifen dose tested yet limited reduction labeling targeting reporter expression inner phalangeal border cells increased plp creer paired cag egfp reporter however total number labeled cells decreased changes tamoxifen dose reporter line prox creert caused minimal changes data demonstrate modifications tamoxifen dose use different reporter lines may successful narrowing numbers types cells labeled creer line responded differently rosa tdtomato reporter combined four creer lines difference number tdtomato positive cells one two injections tamoxifen given birth thus tamoxifen mediated toxicity could reduced giving one injection cag egfp reporter consistently labeled fewer cells reporter lines valuable depending goal study
toxoplasma gondii iswidely distributed humans animals including birds throughout theworld however little known themolecular epidemiology genotypes gondii infecting quails china therefore present study conducted characterize gondii genotypes common quails china december october total muscle tissue samples common quails collected gondii gene amplified using nested pcr positive samples genotyped genetic markers sag sag alternative sag sag btub gra apico using multilocus polymerase chain reaction restriction fragment length polymorphism pcr rflp technology twenty five common quails tested positive nested pcr three dna samples positive samples typed completely identified toxodb genotype http toxodb org toxo results present study indicated gondii infection common quails common china provided information gondii genetic diversity host species first genetic characterization gondii isolates quails china useful monitoring controlling gondii infection quails animals humans published elsevier
lymphoma usually forms solid tumours patients high expression levels adhesion molecules observed tumours however kaposi sarcoma associated herpesvirus kshv related primary effusion lymphoma pel form solid tumours adhesion molecule expression suppressed cells inoculation kshv associated pel cell line peritoneal cavity severe combined immunodeficiency mice resulted formation effusion solid lymphomas peritoneal cavity proteomics using two dimensional difference gel electrophoresis dna microarray analyses identified proteins genes respectively whose expression differed significantly effusion solid lymphomas five genes identified similar expression profiles lymphocyte function associated antigen important adhesion molecule leukocytes among coronin actin binding protein identified molecule showing high expression solid lymphoma dna microarray proteomics analyses western northern blotting showed coronin predominantly expressed solid lymphomas moreover kshv encoded lytic proteins including viral interleukin highly expressed effusion lymphoma compared solid lymphoma data demonstrate effusion solid lymphomas possess distinctive gene protein expression profiles mouse model suggest differences gene protein expression effusion solid lymphomas may associated formation effusion lymphoma invasive features solid lymphoma furthermore results obtained using combination proteomics dna microarray analyses indicate protein synthesis partly reflects correlate strictly mrna production copyright pathological society great britain ireland published john wiley sons ltd
introductionthe translocation resulting fusion gene etv runx frequent gene fusion childhood lymphoblastic leukemia nordic society paediatric haematology oncology treatment protocol treatment stratification lineage based results minimal residual disease mrd analysis fluorescence activated cell sorting facs study determined whether qpcr etv runx fusion transcript reliable alternative mrd analysis methodsseventy eight bone marrow samples children diagnosis day treatment analyzed mrd facs quantitative reverse transcription polymerase chain reaction qpcr fusion transcript mrd defined etv runx gusb ratio follow time point day divided etv runx gusb ratio diagnosis resultsmrd analysis facs qpcr etv runx fusion transcript showed strong correlation cases showed concordant results treatment stratifying time points day day comparing two methods cutoff set conclusionrt qpcr valuable addition could also alternative facs cases facs achievable mrd analysis
brain tumors represent malignant cancers children adults current treatment options target majority tumor cells adequately target self renewing cancer stem cells cscs cscs reported resist aggressive radiation chemotherapies give rise recurrent treatment resistant secondary malignancies advancing technologies better understanding genetic epigenetic molecular signatures microenvironmental influences useful distinguishing distinctly different tumor subtypes result efforts underway identify target cscs within various tumor subtypes based foundation review discusses progress csc biology relates targeted therapies may uniquely different pediatric adult brain tumors studies date suggest pediatric brain tumors may benefit genetic epigenetic targeted therapies combination treatments aimed specifically multiple molecular pathways may effective treating adult brain tumors seem greater propensity towards microenvironmental interactions ultimately csc targeting approaches combination current clinical therapies potential effective owing ability compromise cscs maintenance mechanisms underlie highly aggressive deadly nature
rearing darkness slows time course visual cortical critical period weeks age normal cats plastic dark reared cats weeks dark reared cats plastic mower effect dark rearing time course critical period cat visual cortex dev brain res thus genes important visual cortical plasticity show differences expression normal darkreared visual cortex opposite direction young versus older animals previously showed differential display polymerase chain reaction northern blotting mrna munc mammalian homologue elegans uncoordinated unc gene shows bidirectional regulation cat visual cortex yang zheng mower identification munc candidate gene critical period neuroplasticity visual cortex neurosci analysis extended munc protein mouse visual cortex provide basis gene manipulation analysis mice munc protein elevated fold dark reared compared normal visual cortex weeks fold normal compared dark reared visual cortex weeks analysis variance protein levels showed significant interaction indicating effect dark rearing depended age bidirectional regulation restricted visual cortex occur frontal cortex bidirectional regulation also specific munc found munc family members munc proteins serve central priming function synaptic vesicle exocytosis glutamatergic gabaergic synapses work contributes growing evidence indicating role munc genes synaptic plasticity ibro published elsevier ltd rights reserved
study body metabolic rate volunteers performing light medium heavy physical labor examined different climatic conditions chamber climatic conditions referred one group comfort environment degrees dry bulb temperature relative humidity three groups thermal environment degrees degrees degrees cdry bulb temperature relative humidity results reveal labor intensity human metabolic rate increases rise environment temperature scope similar degrees impact environment temperature metabolic rate increases rise labor intensity addition classification physical labor intensity upgrades environment temperature exceeds certain threshold
precision medicine approach tailoring treatment individual characteristics patient subgroup great success monogenic diabetes subtypes mody neonatal diabetes review examines led success precision medicine approach monogenic diabetes precision diabetes outlines possible implications type diabetes monogenic diabetes molecular genetics define discrete aetiological subtypes profound implications diabetes treatment predict future development associated clinical features allowing early preventative supportive treatment contrast type diabetes overlapping polygenic susceptibility underlying aetiologies making difficult define discrete clinical subtypes dramatic implication treatment implementation precision medicine neonatal diabetes simple rapid based single clinical criteria diagnosed months age contrast mody complex slow lack single criteria identify patients greatly assisted development diagnostic probability calculator associated smartphone app experience monogenic diabetes suggests successful adoption precision diabetes approach type diabetes require simple quick easily accessible stratification based combination routine clinical data rather relying newer technologies analysing existing clinical data routine clinical practice trials may provide early success precision medicine type diabetes
introduction sphingosine phosphate bioactive lysophospholipid derived activated platelet known induce diverse cellular responses least five protein coupled receptors various cell types abnormal platelet coagulation activation often seen patients gastric cancer however neither effects platelet derived mediator distribution receptors gastric cancer cell fully understood aim study examine possible role receptors progression gastric cancer materials methods characterized expression profiles receptors nine human gastric cancer cell lines evaluated relationship responses receptor expression cell migration modified boyden chamber cell proliferation mts assay results northern blotting analysis revealed expressed gastric cancer cell lines varying degrees expressed four cell lines expression weak significant expression either detected addition markedly stimulated migration mkn hcg dominantly expressed effect potently inhibited pertussis toxin wortmannin contrast significantly inhibited migration expressed exclusively indicates balance mediated signals might critical determining metastatic response gastric cancer cells elicited weak significant antiproliferative effects three cell lines although effects major cells induced extracellular signal regulated kinase erk phosphorylation transient akt dephosphorylation may cause weak effects proliferation conclusions results suggest receptor expression may critically determine biological behavior gastric cancers thus therapeutic interventions directed receptor might clinically effective preventing metastasis gastric cancer elsevier inc rights reserved
aim single center cross sectional study detect prevalence selected periodontal pathogenic bacteria active matrix metalloproteinase ammp level patients preltx liver transplantation postltx periodontal pocket depth ppd clinical attachment loss cal assessed subgingival biofilm samples analyzed using polymerase chain reaction pcr detect common periodontal pathogens gingival crevicular fluid gcf samples analyzed enzyme linked immunosorbent assay elisa determine ammp level assigned scoring system score score score following used statistical analysis test mann whitney test fishers test alpha total patients preltx postltx could included study periodontal findings significantly different groups microbiological analysis significantly higher prevalence campylobacter rectus preltx group detected significantly patients score postltx group significantly patients score preltx group found furthermore ammp concentrations patients moderate periodontitis significantly lower postltx group compared preltx group additionally postltx group ammp concentration significantly higher patients severe periodontitis compared mild periodontitis ltx appears affect ammp level bacterial findings patients ltx determination ammp level patients ltx immunosuppressive medication might lead wrong interpretation results
tcl rhoj cdc related rho gtpase reported activities endothelial cell biology angiogenesis metastatic melanoma corneal epithelial cells however less known inherently regulated comparison closest homologues cdc tcl terminal extension amino acids comparison cdc function amino acid sequence elucidated truncation mutant lacking terminus found alter tcl plasma membrane localization nucleotide binding additional truncation point mutants mapped alterations tcl biochemistry amino acids interestingly whereas tcl mutant clearly influenced nucleotide exchange deletion terminus closest homologue similar effect chimeras tcl revealed amino acids tcl contributed differences nucleotide loading together results identify amino acids within terminus loop region distal nucleotide binding pocket tcl capable allosterically regulating nucleotide exchange thus influence membrane association protein
genome structural variation shows remarkable complexity respect copy number sequence content distribution discovery copy number polymorphisms cnp increased exponentially recent years transition discovery genotyping proved challenging particularly cnps embedded complex regions genome cnps collectively common population possess dynamic range copy numbers proved difficult genotype association studies part due technical limitations genotyping assays sequence properties genomic region analyzed describe detail basis number molecular techniques used genotype complex cnps compare contrast approaches determination multi allelic copy number discuss potential application techniques genetic studies elsevier inc rights reserved
profound influence atp binding cassette abc transporters disposition numerous drugs led increased interest characterizing expression profiles various epithelial endothelial barriers present work examined presence functional activity five abc efflux proteins mrp freshly isolated human nasal epithelial cells two vitro models based human rpmi cell line evaluate expression patterns mrp mrp mrp mrp mrp mrna protein levels vivo model differently cultured rpmi cells reverse transcriptase polymerase chain reaction pcr western blot analysis indirect immunofluorescence staining used functionality mrp transporters three models assessed using efflux experiments accumulation assays respective substrates inhibitors mrna protein expression selected abc transporters detected excised human nasal mucosa well corresponding cell culture models moreover functional expression mrp transport proteins demonstrated three models first time therefore potential impact multidrug resistance associated proteins drug disposition intranasal administration may taken consideration future developments specimens human nasal turbinate exhibited slightly lower efflux capacities mrp mrp mrp relation submerged ali cultured rpmi cells showed promising comparability vitro models concerning activity mrp mrp regard different rpmi cell culture models able provide useful experimental data preclinical phase estimate interaction particular efflux transporters drug candidates nasal application
twenty three str loci dys dysi dys dys dys dys dys dys dys dys dys dys dys dys dys dys dys dysdys dys ygata dysa included next generation powerplex system first investigated unrelated healthy male individuals minority population residing liangshan autonomous prefecture sichuan china total alleles haplotypes discovered group total haplotypes among unique remaining haplotypes observed two three individuals haplotype discrimination capacity haplotype diversity respectively genetic diversity ranged dys dysa population comparisons minority group asian meta populations comprising individual populations performed multidimensional scaling plots phylogenetic analyses demonstrated genetic structure chinese ethnicity extremely different compared taiwan indigenous inhabitants among asian meta populations additionally genetic structure resemblance group obtained geographically close population xuanwei han similar language family groups thai populations besides study demonstrated powerplex system high polymorphism chinese ethnic population high discriminatory power forensic purposes population data str obtained ethnic population enriched chinese ethnic genetic information
objectives retinoic acid reta oncostatin osm shown mediate potent effects respect extracellular matrix integrity study assesses effects reta osm combination cartilage catabolism methods animal human cartilage samples used assess ability reta osm promote release collagen proteoglycan fragments determined measuring glycosaminoglycan hydroxyproline respectively total collagenolytic tissue inhibitor metalloproteinases timp inhibitory activities determined bioassay whilst gene expression matrix metalloproteinases mmps timp determined northern blotting immunohistochemistry used assess presence mmp resorbing cartilage explants results agents alone induced proteoglycan release bovine cartilage whilst reta induced collagen release variable reproducible synergistic collagenolysis observed reta osm appeared due mmp similar collagen release observed porcine cartilage conversely collagen release seen human articular cartilage primary human chondrocytes reta osm failed induce mmp caused significant increase timp expression conclusions novel observations show combination reta osm profound effects cartilage matrix turnover effects species specific better understanding mechanism combination differentially regulates mmp timp expression human chondrocytes could provide valuable insight new therapeutic strategies aimed prevention cartilage destruction
pseudomonas putida bet delftia tsuruhatensis bet isolated palm oil mill effluent accumulated poly hydroxyalkanoates phas grown aliphatic fatty acids sugars glycerol substrates supplied mole ratio among even alkanoic acids myristic acid gave highest pha content putida tsuruhatensis respectively among odd alkanoic acids undecanoic gave highest pha content putida tsuruhatensis pentadecanoic acid sugar glycerol gave pha content bacteria interestingly tsuruhatensis accumulated short medium chain length pha supplied alkanoic acids ranging octanoic lauric sucrose glycerol hydroxybutyrate major monomer unit putida major hydroxyalkanoates unit hydroxyoctanoate hydroxydecanoate grown even acids conversely hydroxyheptanoate hydrxoynonanoate hydroxyundecanoate accumulated odd acids weight averaged molecular weight range kda kda putida tsuruhatensis respectively calorimetric analyses indicated bacteria synthesized semicrystalline polymer good thermal stability degradation temperature ranging degrees international union biochemistry molecular biology inc
background increasing global market genetically modified crops amplifies potential unintentional contamination food feed plants methods proposed disposal crop residues assessed prevent unintended distribution materials composting organic material inexpensive location independent objective study determine effectiveness composting disposal plants terms reducing seed viability promoting degradation endogenous well transgenic dna results duplicate samples corn kernels alfalfa leaves canola seeds meal pellets sealed porous nylon bags implanted duplicate initial weight feedlot manure compost piles samples collected intervals days composing canola seeds corn kernels viable days composting temperatures piles exceeding degrees samples pcr analyses revealed plant endogenous transgenic fragments substantially degraded days composting southern blotting genomic dna isolated canola seeds identified differences persistence endogenous transgenic bacterial dna conclusion composting non plant materials manure rendered seeds non viable resulted substantial although complete degradation endogenous transgenic plant dna study demonstrates composting could effective disposing crops event inadvertent entry food feed chain copyright crown right canada published john wiley sons ltd
rpe key metalloenzyme responsible maintaining visual function vertebrates despite extensive research membrane bound retinoid isomerase fundamental questions regarding enzymology remain unanswered report crystal structure rpe membrane like environment crystals obtained enzymatically active nondelipidated protein displayed unusual packing arrangement wherein rpe embedded lipid detergent sheet structural differences delipidated nondelipidated rpe uncovered key residues involved substrate uptake processing complementary iron edge ray absorption spectroscopy data established rpe isolated contained divalent iron center demonstrated presence tightly bound ligand consistent coordinated carboxylate group results support hypothesis lewis acidity iron could used promote ester dissociation generation carbocation intermediate required retinoid isomerization
study investigated integration arabidopsis vacuolar pyro phosphatase ppase avp transgene transgenic sugarcane plants drought tolerance gene integration confirmed polymerase chain reaction pcr southern blotting transgene expression estimated western blotting sugarcane plants grown soil reduced water supply transgenic sugarcane overexpressing avp produced higher shoot biomass based cane height number millable canes brix compared wild type overexpression avp transgenic sugarcane plants increased tolerance drought stress demonstrated increased relative water content rwc leaf water psi osmotic psi turgor potential psi physiological parameters photosynthetic rate stomatal conductance transpiration rate less affected water deficit stress transgenic avp plants compared wild type plants conclusion results indicated avp conferred tolerance drought water deficit stress highlighting potential use gene crop improvement biotechnological applications
study evaluated effects low level laser therapy lllt epidermal growth factor egf fibroblasts obtained young elderly individuals gingival fibroblasts young elderly individuals seeded wells well plates dulbecco modified eagle medium dmem containing fetal bovine serum fbs cells irradiated lasertable ingaasp exposed egf cells evaluated viability migration collagen vascular endothelial growth factor vegf synthesis gene expression growth factors data analyzed kruskal wallis mann whitney tests alpha fibroblasts irradiated laser exposed egf showed increased viability collagen synthesis enhanced cell migration observed fibroblasts treatments whereas lllt stimulated migration cells vegf synthesis higher cells exposed egf synthesis reduced fibroblasts irradiated increased gene expression vegf observed fibroblasts treated lllt regardless patient age lllt egf applications biostimulate gingival fibroblast functions involved tissue repair
lipid analysis performed high performance thin layer chromatography hptlc relatively simple cost effective method analyzing broad range lipids function lipids host pathogen interactions host entry reported play crucial role cellular processes show method determine lipid composition focus cholesterol level primary blood derived neutrophils hptlc comparison high performance liquid chromatography hplc aim investigate role lipid cholesterol alterations formation neutrophil extracellular traps nets net release known host defense mechanism prevent pathogens spreading within host therefore blood derived human neutrophils treated methyl beta cyclodextrin beta induce lipid alterations cells using hptlc hplc shown beta treatment cells leads lipid alterations associated significant reduction cholesterol content cell time beta treatment neutrophils led formation nets shown immunofluorescence microscopy summary present detailed method study lipid alterations neutrophils formation nets
review provides synopsis genetic counselors major concepts lymphoma predisposition genomic instability immune deficiency inappropriate lymphoproliferation chronic antigen stimulation discuss syndromes typifying mechanisms importantly review genetic counseling literature reveals sparse discussion genetically based immune mediated lymphoma predisposition address depth aim increase awareness among genetic counselors colleagues oncology familial susceptibility facilitate critical thinking lymphoma risk assessment clinical application knowledge aided recommendations collection personal family history guide risk assessment testing lastly include special discussion genetic counseling issues including perceptions context nature magnitude lymphoma risk well coping awareness susceptibility lymphoma
objectives expression patterns cytokeratin filaments human epithelial neoplasms complex distinctive aims study analyze expression evaluate diagnostic application cks human non small cell lung cancer nsclc methods mrna expression analyzed northern blotting protein expression evaluated immunohistochemistry tissue microarrays results northern blotting showed cks highly expressed human bronchial epithelial cells small airway epithelial cells nsclc cell lines expression pattern cks heterogeneous regarding protein expression cks primary lung tumors expression proteins increased squamous cell carcinomas compared adenocarcinomas adc respectively higher expression significantly associated lower grading respectively increased expression observed adc respectively conclusions data suggest diagnostic value subclassification nsclc copyright karger basel
years smoluchowski introduced approach stochastic processes basis mathematical physical modeling cellular biology used example analyse extract features large number tens thousands single molecular trajectories study diffusive motion molecules proteins receptors stochastic modeling new step large data analysis serves extracting cell biology concepts review smoluchowski approach stochastic processes provide several applications coarse graining diffusion studying polymer models understanding nuclear organization finally discuss stochastic jump dynamics telomeres across cell division stochastic gene regulation
screened gene encodes tetratricopeptide repeat domain ttc maturing rat testis gene expression determined northern blotting week old rat testes strong signal detected close rrna band addition two weak high molecular weight signals situ hybridization revealed ttc expressed primarily spermatocytes evaluated effect gonadotropin ttc expression using hypophysectomized rats pituitary removed week old rats gonadotropin injected weeks ttc expression determined weeks although testicular development hyperplasia interstitial cells observed following chorionic gonadotropin treatment hypophysectomy ttc expression upregulated treatment follicle stimulating hormone ttc encodes axonemal dynein component sperm flagella taken together data indicate axonemal dynein expression starts spermatocytes regulated follicle stimulating hormone
macrolide pipecolate natural products rapamycin renowned modulators binding proteins fkbps nocardiopsins nocardiopsis cmb newest members structural class biosynthetic pathway nocardiopsins revealed cloning sequencing bioinformatic analyses nsn gene cluster vitro evaluation recombinant nsnl revealed lysine cyclodeaminase catalyzes conversion lysine pipecolic acid incorporated bioinformatic analyses supported conjecture linear nocardiopsin precursor equipped hydroxy group required macrolide closure previously unobserved manner employing epoxidase nsnf limonene epoxide hydrolase homologue nsng nsn cluster also encodes candidates tetrahydrofuran group biosynthesis nocardiopsin pathway provides opportunities engineering fkbp binding metabolites probing new enzymology nature polyketide tailoring arsenal
caffeine biosynthesis involves sequential methylation purine ring transfer methyl group methyl donor adenosyl methionine genes code individual methyl transferase high degree sequence homology achieve decaffeination genetic engineering coffee effect efficiency different post transcriptional gene silencing ptgs constructs evaluated sense antisense invert repeat constructs developed using fragment conserved region coffee methyltransferase genes involved caffeine biosynthesis silencing constructs mobilized agrobacterium tumefaciens eha sonication assisted agrobacterium mediated transformation somatic embryos canephora performed followed regeneration transformants molecular analysis identification flanking regions confirmed stable integration transgenes transformants integration non coding regions genome respectively effectiveness silencing constructs evaluated transcript analysis targeted genes pcr northern blotting silencing efficiency evaluated estimation purine alkaloid content transgenic lines using hplc three constructs differed silencing efficiencies specificity though constructs specific single methyltransferase transformants obtained mainly affected one methyltransferases results show use homologous coding sequence ptgs constructs results much higher efficiency silencing caffeine biosynthetic pathway lowering caffeine content preferred complete decaffeination due extremely low survival rate transgenic plants extremely low levels caffeine
management unresectable urothelial cancer clinical challenge decades drug resistance key issue precise understanding biology metastasis another challenge improvement treatment outcome patients introduction cell biology concepts including epithelial mesenchymal transition emt cancer stemness seems explain metastasis molecular genetics based gene expression profiling next generation sequencing explosion non coding rna world opened door intrinsic molecular subtyping next steps include based recently accumulated understanding establishment novel disease models representing metastasis various experimental platforms particularly vivo animal systems indeed novel knowledge molecular genetics fully linked modeling metastasis understanding bladder carcinogenesis needed particularly regard cell origin related tumor characteristics including driver gene alterations pathological differentiations metastatic ability able establish better disease models consequently lead understanding biology eventually development novel therapeutic strategies metastasis editorial office asian journal urology production hosting elsevier
background malabsorption fat protein contributes poor nutritional status people cystic fibrosis impaired pancreatic function may also result increased gastric acidity leading turn heartburn peptic ulcers impairment oral pancreatic enzyme replacement therapy administration gastric acid reducing agents used adjunct pancreatic enzyme therapy improve absorption fat gastro intestinal symptoms people cystic fibrosis important establish evidence regarding potential benefits drugs reduce gastric acidity people cystic fibrosis update previously published review objectives assess effect drug therapies reducing gastric acidity nutritional status symptoms associated increased gastric acidity fat absorption lung function quality life survival determine adverse effects associated use search methods searched cochrane cystic fibrosis genetic disorders group trials register comprises references identified comprehensive electronic database searches handsearches relevant journals abstract books conference proceedings recent search group trials register may selection criteria randomised quasi randomised trials involving agents reduce gastric acidity compared placebo comparator treatment data collection analysis authors independently selected trials assessed trial quality extracted data main results searches identified trials participants suitable inclusion number trials assessing different agents small seven trials limited children four trials enrolled adults meta analysis performed trials cross design appropriate information conduct comprehensive meta analyses trials run single centres duration ranged five days six months included trials generally reported adequately enough allow judgements risk bias however one trial found drug therapies reduce gastric acidity improved gastro intestinal symptoms abdominal pain seven trials reported significant improvement measures fat malabsorption two trials reported significant improvement nutritional status one trial reported measures respiratory function one trial reported adverse effect prostaglandin analogue misoprostol trials identified assessing effectiveness agents improving quality life complications increased gastric acidity survival authors conclusions trials shown limited evidence agents reduce gastric acidity associated improvement gastro intestinal symptoms fat absorption currently insufficient evidence indicate whether improvement nutritional status lung function quality life survival furthermore due unclear risks bias included trials unable make firm conclusions based evidence reported therein therefore recommend large multicentre randomised controlled clinical trials undertaken evaluate interventions
objective analyzed correlation mutation intron exon endothelial nitric oxide synthase enos avascular necrosis femoral head anfh method total anfh cases without history hip joint injuries diagnosed subject staging according ficat standard health subjects control venous blood collected extract genome dna amplified pcr polymorphism repeat sequence intron polymorphism exon enos gene detected results genotype frequency intron anfh group respectively control group respectively allele frequency anfh group obviously higher control frequency wild type heterozygote homozygote enos exon analyzed pcr rlfp anfh group normal control respectively frequency genotype anfh obviously higher control group conclusion polymorphism enos correlated anfh
metabolism contributes significantly pharmacokinetics pharmacodynamics drug addition diet genetics profound effect cellular metabolism respect health disease present study assembled comprehensive literature based drug metabolic reconstruction highly prescribed drug groups including statins anti hypertensives immunosuppressants analgesics reconstruction captures detail current understanding absorption intracellular distribution metabolism elimination combined drug module comprehensive reconstruction human metabolism recon yielding recon accounts metabolites reactions defining specific drug objectives captured overall drug metabolism compounds investigated effects dietary composition inherited metabolic disorders drug metabolism drug drug interactions main findings include shift dietary patterns significantly affects statins acetaminophen metabolism disturbed statin metabolism contributes clinical phenotype mitochondrial energy disorders interaction statins cyclosporine explained several common metabolic transport pathways previously established cypa connection work holds potential studying adverse drug reactions designing patient specific therapies
molecular ecologists good reasons excited newest dna rna sequencing technologies however exuberance tempered hefty dose reality new sequencing technologies come significant new challenges herein offer brief overview practical problems encountered transcriptomics studies conducted laboratory nontrivial issues prospective practitioners consider include template contamination xenobiotics cutting room floor problem whereby data often unassembled unannotated unused also highlight computational requirements including hardware personnel time associated skill sets optimistic future molecular ecology hope cautionary overview help neophytes better recognize key challenges associated new technologies
novel hypothesis free multivariate screening methodology study human exercise metabolism blood serum presented serum gas chromatography time flight mass spectrometry tofms data processed using hierarchical multivariate curve resolution mcr orthogonal partial least squares discriminant analysis opls used model systematic variation related acute effect strenuous exercise potential metabolic biomarkers identified using data base comparisons extensive validation carried including predictive mcr fold full cross validation predictions opls model variable permutation highlighting interesting metabolites pairwise tests examining significance metabolites concentration changes potential biomarkers verified raw tofms data total potential metabolites resolved serum samples basis relative concentrations resolved metabolites valid multivariate model difference pre postexercise subjects obtained total metabolites highlighted potential biomarkers statistically significant example two potential markers identified glycerol asparagine concentration changes two metabolites also verified raw tofms data strategy shown facilitate interpretation validation metabolic interactions human serum well revealing identity potential markers known novel mechanisms human exercise physiology multivariate way addressing metabolism studies help increase understanding integrative biology behind well unravel new mechanistic explanations relation exercise physiology
differential high throughput rna sequencing drna seq identified product rnas prnas short nucleotides synthesized bacillus subtilis rna polymerase rnap vivo using regulatory rna template drna seq data confirmed vitro transcription experiments northern blotting libraries unable detect statistically meaningful numbers reads potentially representing prnas derived rna however prnas could synthesized vitro rna template subtilis sigma rnap prna levels low exponential increase stationary burst outgrowth stationary phase demonstrating prna synthesis conserved regulatory mechanism dynamic fine tuning process previously thought prnas length average length prnas tended increase stationary outgrowth conditions synthesis prna initiated rna rna yielding prnas terminal residue respectively subtilis rna mutant strain encoding prna terminal residue showed relative distribution similar prnas different growth states generally displayed lower prna levels reference strain encoding wild type rna similar two fold lower affinity mutant rna towards sigma rnap may contributed reduction prna levels infer prna synthesis although evolutionarily optimized initiation residue primarily regulated transcription initiation level via growth phase dependent variations cellular gtp pool
objective study analyze expression clinical role phospholipase pld high grade serous carcinoma hgsc pld pld isoform expression studied hgsc specimens effusions ovarian tumors solid metastases using quantitative real time reverse transcription polymerase chain reaction expression levels analyzed association clinicopathological parameters including chemoresponse survival pld pld isoforms found specimens anatomic sites levels strongly positively related effusions solid lesions pld messenger rna mrna expression significantly higher effusions compared carcinomas ovary solid metastases higher levels isoforms associated higher levels diagnosis higher pld mrna levels effusions associated unfavorable response chemotherapy expression levels studied isoforms unrelated levels previously studied mrnas form part phospholipase pathway survival present study provides first evidence pld expression hgsc suggests role mediating progression effusions chemoresistance cancer elsevier inc rights reserved
panax notoginseng important herbal medicine wide uses bioactive compounds health function work compared content saponin cultivation adventitious root total content saponins adventitious root found lower native one year old enhance content bioactive compounds applied elicitors jasmonic acid methyl dihydrojasmonate mdj adventitious root culture observed highest total content saponins achieved treatment fold higher native roots fold higher control group findings high performance liquid chromatography electrospray ionization tandem mass spectrometry analysis showed six new compounds present treatment elicitors furthermore found mdj significantly upregulated expression geranyl diphosphate synthase farnesyl diphosphate synthase squalene synthase squalene epoxidase dammarenediol synthase cypa cypav cyp enzyme genes downregulated expression cycloartenol synthase gene increased superoxide dismutase peroxidase activities international union biochemistry molecular biology inc
salivary gland cancers comprise small subset human malignancies classified multiple subtypes exhibit diverse histology molecular biology clinical presentation local disease potentially curable surgery may combined adjuvant radiotherapy however metastatic unresectable tumors rarely respond chemotherapy carry poorer prognosis recent molecular studies shown evidence androgen receptor signaling several types salivary gland cancer mainly salivary duct carcinoma successful treatment anti androgen therapy androgen receptor positive malignancies prostate breast cancer inspired researchers investigate treatment salivary gland cancer well review describe prevalence biology therapeutic implications androgen receptor signaling salivary gland cancer
kalanchoe blossfeldiana leaf explants infected transformed agrobacterium tumefaciens harbouring plasmid pbeo construct contains mutated ethylene receptor gene etr arabidopsis thaliana control flower specific fbp promoter petunia flowers eight putative transgenic plants exhibiting significant nptii protein content showed lower ethylene sensitivity control plants ethylene exposure one transgenic lines line showed altered vegetative flowering architecture infertility line lowest ethylene sensitivity line analyzed expression copy number etr gene crossed ethylene sensitive cultivar celine create progeny etr gene found expressed petals stamens carpels sepals leaves confirming fbp promoter induces etr expression flower specific manner southern blotting segregation data crossing pcr analysis progeny plants revealed two unlinked dna copies line segregated mendelian fashion plants plants one dna copy ethylene resistant plants may useful breeding confer ethylene insensitivity kalanchoe cultivars
background aim present study investigate effects iron chelator deferiprone diabetic nephropathy rats mechanisms involved methods thirty two male wistar rats weeks old randomly divided control group group two groups treated either per day deferiprone group established feeding high carbohydrate fat diet injection streptozotocin vena caudalis duration deferiprone treatment weeks histopathological changes detected hematoxylin eosin masson staining well transmission electron microscopy levels nuclear factor kappa monocyte chemotactic protein mcp matrix metalloproteinase mmp tissue specific inhibitor metalloproteinase timp cyclo oxygenase cox nitrotyrosine determined kidney tissues using reverse transcription polymerase chain reaction pcr western blotting immunohistochemistry results histopathological observations showed deferiprone treatment alleviated inflammation infiltrates collagenous fibrosis rats results pcr western blotting indicated deferiprone inhibited expression kappa mcp cox nitrotyrosine overexpressed rats immunohistochemistry showed mechanism deferiprone action may involve regulation mmp timp decreased mmp expression increased timp expression rats significantly promoted inhibited deferiprone respectively conclusion iron chelation oral deferiprone renoprotective effect rats relieving oxidative stress inflammation fibrosis related cytokines kappa mcp mmp timp cox nitrotyrosine
endochitinase gene chit cdna biocontrol fungus trichoderma atroviride overexpressed camvs constitutive promoter canola line hyola transformation cotyledonary petioles achieved via agrobacterium tumefaciens insertion transgene verified pcr southern blotting transgenic expression approach used order investigate antifungal activity expressed chit sclerotinia sclerotiorum antifungal activity detected transgenic canola using detached leaf assay lesion sizes transgenic canola caused sclerotiorum significantly retarded compared non transgenic canola plant
large majority classified primary immune deficiency pid diseases present childhood yet patients pid adults large proportion experiencing onset symptoms beyond childhood years diagnosed predominantly antibody defects cellular disorders increasingly identified older patients well moreover advances clinical immunology allowing pediatric patients even severe disease reach adulthood differences physiology pathophysiology children adults presentation diagnosis management complex chronic disease could differ significantly patient populations therefore require modifications approach american academy allergy asthma immunology
investigate mechanism ceftazidime resistance two isogenic acinetobacter baumannii strains united arab emirates two baumannii strains isolated months apart year old patient united arab emirates genotypic characterization performed pfge mic ceftazidime determined agar dilution method detection bla oxa metallo lactamase genes performed multiplex pcr analysis bla per isaba bla adc iscr element carried standard pcr plasmid analysis achieved southern blotting strain resistant ceftazidime whereas strain susceptible isolates carried bla oxa bla oxa genes identical according pfge patterns isaba present upstream bla oxa gene absent upstream bla adc strains strain possessed bla per gene presence gst fragment abc transporter transposase gene downstream entire structure part iscr element located approximate plasmid strain ceftazidime susceptible strain carried approximate plasmid without bla per gene ceftazidime resistance mediated per lactamase encoded iscr element located plasmid represents first detection per lactamase encoded plasmid baumannii
micrornas mirnas important modulators gene expression eukaryotic cells however rnas size bacteria specifically discussed previously provide library mirna size rnas msrnas registered deep sequencing streptococcus mutans bioinformatic analysis whole set revealed individual msrna species cellular content selected msrnas verified quantitative pcr northern blotting high abundance discrete size subset registered msrnas suggest functional significance although precise biological role rna species revealed mutans one principle causative agents dental caries elucidated
age related cataracts frequently associated degenerative changes ocular lens including aggregation proteins mainly crystallins also proteins including amyloids beta leading hypothesis cataracts could used biomarkers alzheimer disease even hypothesis rejected david beebe last paper bei exp eye res fascinating aspect look commonalities eye diseases neurological disorders review discuss commonalities eye brain mainly developmental point view finding functional homology drosophila eyeless gene mammalian pax gene marks first highlight developmental genetics eye result destroyed dogma different evolutionary routes eye development flies mammals second highlight finding pax also involved development forebrain supporting pleiotropic role many genes findings opened new avenue research showing broad variety transcription factors also structural proteins involved eye brain development well maintenance functional integrity corresponding tissue review recent findings summarized demonstrating genes whose mutations identified first causative congenital juvenile eye disorders also involved regenerative processes neurogenesis pax also neurodegenerative diseases like parkinson pitx neurological disorders like schizophrenia crybb crybb published elsevier ltd
nitrogen cycle describes processes nitrogen converted various chemical forms transformations involve biological abiotic redox processes principal processes involved nitrogen cycle nitrogen fixation nitrification nitrate assimilation respiratory reduction nitrate ammonia anaerobic ammonia oxidation anammox denitrification carried micro organisms including bacteria archaea specialized fungi present article provide brief introduction biochemical ecological aspects processes consider human activity last years changed historic balance global nitrogen cycle
proanthocyanidins suggested effective antibiotic alternative however mechanisms still unknown present study investigated effects grape seed proanthocyanidins gut microbiota mucosal barrier using weaned piglet model comparison colistin piglets weaned day randomly assigned four groups treated control ration supplemented proanthocyanidins kitasamycin colistin proanthocyanidins half dose antibiotics respectively day gut chyme tissue samples collected test intestinal microbiota barrier function respectively proanthocyanidins treated piglets better growth performance reduced diarrhea incidence accompanied decreased intestinal permeability improved mucosal morphology gene sequencing analysis rrna revealed dietary proanthocyanidins improved microbial diversity ileal colonic digesta abundant otus belong firmicutes bacteroidetes spp proanthocyanidins treatment decreased abundance lactobacillaceae increased abundance clostridiaceae ileal colonic lumen suggests proanthocyanidins treatment changed bacterial composition distribution administration proanthocyanidins increased concentration propionic acid butyric acid ileum colon may activate expression gpr addition dietary proanthocyanidins improved antioxidant indices serum intestinal mucosa accompanied increasing expression barrier occludin findings indicated proanthocyanidins half dose colistin equivalent antibiotic treatment assisted weaned animals resisting intestinal oxidative stress increasing diversity improving balance gut microbes
heat shock factor hsf major heat shock transcription factor plays essential role mediating cellular response physiological environmental stress found lps induced expression granulocyte colony stimulating factor csf gene upregulated hsf knock hsf mice using gene array order determine whether hsf regulates induced expression csf mrna protein levels csf detected northern blotting elisa promoter csf analyzed online transcription element search system transcriptional activity csf promoter analyzed emsa reporter gene assay results showed transcription protein secretion csf induced lps inhibited hsf three high affinity binding sites ccaat enhancer binding protein beta heat shock element identified core promoter csf dna binding capability csf promoter reinforced lps influenced heat shock hsf however hsf observed bind binding sites csf promoter transcriptional activity csf promoter enhanced lps inhibited hsf dose dependent manner conclude hsf regulates expression csf binding binding element
rapidly multiplying cancer cells synthesize greater amounts cholesterol build membranes cholesterol lowering drugs statins currently clinical trials anti cancer chemotherapy however given higher doses statins cause serious side effects inhibiting formation biologically important molecules derived mevalonate sterol alpha demethylase cyp acts steps downstream potentially specific drug target portion pathway fully committed cholesterol production however screening variety commercial experimental inhibitors microbial cyp orthologs revealed including clinical antifungals weakly inhibit human cyp activity even display high apparent spectral binding affinity one relatively potent compound difluorobiphenyl imidazol ethyl phenyl oxadiazol benzamide vfv identified vfv tested cellular experiments found decrease proliferation different cancer cell types jlr crystal structures human cyp vfv complexes angstrom display inhibitor enzyme stoichiometry provide molecular insights regarding broader substrate profile faster catalysis weaker susceptibility human cyp inhibition outline directions development potent inhibitors hargrove friggeri wawrzak sivakumaran yazlovitskaya hiebert guengerich waterman lepesheva human sterol alpha demethylase target anticancer chemotherapy towards structure aided drug design
age related alterations human gut microbiota composition thoroughly described detailed functional description intestinal bacterial coding capacity still missing order elucidate contribution gut metagenome complex mosaic human longevity applied shotgun sequencing total fecal bacterial dna selection samples belonging well characterized human ageing cohort age related trajectory human gut microbiome characterized loss genes shortchain fatty acid production overall decrease saccharolytic potential proteolytic functions abundant intestinal metagenome younger adults altered functional profile associated relevant enrichment pathobionts opportunistic proinflammatory bacteria generally present adult gut ecosystem low numbers finally signature long life identified microbial genes significantly correlated ageing collectively data emphasize relationship intestinal bacteria human metabolism detailing modifications gut microbiota consequence promoter physiological changes occurring human host upon ageing
background vernal keratoconjunctivitis vkc chronic often severe bilateral conjunctivitis vkc etiology still remains unclear although endocrine genetic neurogenic environmental factors implicated vitamin fat soluble prohormone whose main function regulation calcium phosphate metabolism aim study evaluate serum vitamin children affected vkc compared healthy children investigate relationship levels disease severity methods total children affected vkc aged years enrolled department pediatrics division allergy immunology sapienza university rome used controls healthy children negative skin prick test spt without allergic ocular systemic disease serum samples obtained april children included study vitamin dosage repeated october patients therapy controls conjunctival scraping performed children affected vkc results children affected vkc lower vitamin levels compared healthy controls found increase vitamin levels therapy cyclosporine eye drops although increase lower healthy controls moreover found significant correlations vitamin level severity disease conclusions study shows children affected vkc lower vitamin levels compared healthy controls highlights significant correlation levels disease severity
carbofuran carbamate pesticide used agricultural practice throughout world effect pesticide due ability inhibit acetylcholinesterase activity carbofuran long history use little information available respect metabolic fate disposition mammals present study designed investigate comparative vitro metabolism carbofuran human rat mouse liver microsomes hlm rlm mlm respectively characterize specific enzymes involved metabolism particular reference human metabolism carbofuran metabolized cytochrome cyp leading production one major ring oxidation metabolite hydroxycarbofuran two minor metabolites affinity carbofuran cyp enzymes involved oxidation hydroxycarbofuran significantly less hlm rlm mlm intrinsic clearance rate calculations indicate hlm fold less efficient metabolism carbofuran hydroxycarbofuran rlm mlm screen major human cyp isoforms metabolic ability respect carbofuran metabolism demonstrated cypa major isoform responsible carbofuran oxidation humans cypa much less active human cyp isoforms minimal activity toward carbofuran contrast human isoforms members cypc family rats likely primary role carbofuran metabolism normalization hlm data average levels cyp native hlm indicates carbofuran metabolism primarily mediated cypa percent total normalized rate tnr although cypa play ancillary roles tnr respectively substantiated fact ketoconazole specific inhibitor cypa excellent inhibitor hydroxycarbofuran formation hlm mum chlorpyrifos irreversible non competitive inhibitor cypa inhibits formation hydroxycarbofuran hlm mum use phenotyped hlm demonstrated individuals high levels cypa greatest potential metabolize carbofuran major metabolite variation carbofuran metabolism among single donor hlm samples fold best correlation cyp isoform activity carbofuran metabolism observed cypa interaction carbofuran endogeneous cypa substrates testosterone estradiol also investigated testosterone metabolism activated carbofuran hlm cypa however less activation observed carbofuran metabolism testosterone hlm cypa interactions carbofuran estradiol metabolism observed elsevier ireland ltd rights reserved
recurrent pneumonia cavitation leading pneumatoceles secondary fungal infections hemoptysis major causes mortality morbidity patients hyper ige syndrome prevention aggressive treatment pneumonia patients essential prevent lung damage treatment may delayed classic signs symptoms infection fever chills rigors may lacking early imaging identify infection essential diagnosis treatment mainstay therapy continuous full dose daily trimethoprim sulfamethoxazole commonly fungal coverage hyper ige syndrome progressive disease patients condition may worsen despite compliance prophylactic therapy american academy allergy asthma immunology
intronic hexanucleotide repeat expansion corf major cause amyotrophic lateral sclerosis frontotemporal lobar degeneration several mechanisms including rna toxicity repeat associated non aug translation mediated dipeptide protein aggregates haploinsufficiency corf implicated molecular pathogenesis disorder aims study compare use two different southern blot probes detection repeat expansions amyotrophic lateral sclerosis frontotemporal lobar degeneration pathological cohort determine levels corf transcript variants protein isoforms patients versus control subjects southern blot studies identified smaller repeat expansions detectable flanking probe highlighting potential divergent results using different southern blotting protocols could complicate genotype phenotype correlation studies characterize new corf antibody show first time decreased corf protein levels frontal cortex patients pathological hexanucleotide repeat expansion data suggest reduction corf protein may consequence disease authors published elsevier inc rights reserved
background diamond blackfan anemia shwachman diamond syndrome inherited bone marrow failure syndromes linked defects ribosome synthesis purpose study determine whether yeast models diamond blackfan anemia shwachman diamond syndrome differed mechanism ribosome synthesis affected design methods northern blotting pulse chase analysis polysome profiling used study ribosome synthesis yeast models localization ribosomal subunits assessed using rplegfp results relative wild type controls disease model showed defects subunit maturation distinct underlying mechanisms model diamond blackfan anemia subunit maturation disrupted relatively early stage abortive complexes subject rapid degradation ribosomal rna unlike large subunit ribosomal rna model accumulated extra ribosomal species contrast subunit maturation shwachman diamond syndrome model affected later step giving rise relatively stable pre particles associated ribosomal rna retained nucleus conclusions differences yeast diamond blackfan anemia shwactiman diamond syndrome models implications signaling mechanisms linking abortive ribosome assembly cell fate decisions may contribute divergent clinical presentations diamond blackfan anemia shwachman diamond syndrome
last decade interest technology tissue engineering grown enormously especially respect reparative techniques new methods therapeutic tools designed various cell types used novel drugs growth factors applied repair lesions numerous tissues particular bone cartilage resulting injuries degenerative changes due aging population requires application various methods including sophisticated surgical procedures supported techniques cell biology biotechnology latter techniques required choosing appropriate cell types transplantation elaborating optimal cell culture conditions designing scaffolds cell delivery affixing temporary implantable devices lesion site supplying drugs growth factors present review describe discuss various techniques used bone cartilage repair including recently applied principal cell sources application nanotube based scaffolds regeneration joint cartilage
magnitude postprandial lipemia identified independent risk factor development coronary artery disease test effect postprandial versus postabsorptive low density lipoproteins ldl expression adhesion molecules ldl isolated healthy subjects ingestion standardized fatty test meal used flow cytometry northern blotting quantify cell adhesion molecules human aortic endothelial cells haec adherence leukocytes haec analyzed using monocyte adhesion assay incubation haec postprandial postabsorptive ldl induced two fold increase surface expression intercellular adhesion molecule icam selectin vascular cell adhesion molecule addition increased amounts icam transcripts found haec treated postprandial ldl adhesion monocytes haec enhanced pretreatment postprandial postabsorptive ldl conclude postprandial postabsorptive ldl increase surface expression icam haec apparently novo protein synthesis leading increased adhesion monocytes upregulation icam postprandial ldl may explain part proatherogenic effect high postprandial lipemia elsevier ireland ltd rights reserved
arctic wildlife exposed high mercury levels also naturally exposed gastrointestinal parasites reduce condition negatively affect reproductive output survival similar ways importantly parasites increasing wildlife arctic regions studied northern common eider duck somateria mollissima explore association natural levels experimentally reduced parasitic infections affect reproduction survival female eiders measured banded blood sampled determine blood burdens prior breeding propensity nest clutch size nest survival nest attendance return rates assessed relation burden parasite treatment neither reproduction return rates females varied concentrations females arriving late colony low body condition showed increased nesting propensity given anti parasite treatment compared placebo treatment results suggest parasites play critical role decisions invest avian breeding annually particularly among individuals late onset breeding poor condition crown copyright published elsevier rights reserved
processes yeast selection using wine fermentation starters revealed great phenotypic diversity interspecific intraspecific level explained corresponding genetic variation among different yeast isolates thus mechanisms involved promoting genetic changes main engine generating yeast biodiversity currently important task understand biodiversity population structure evolutionary history wine yeasts study molecular mechanisms involved yeast adaptation wine fermentation remodeling genomic features wine yeast unconsciously selected since advent winemaking moreover availability rapid simple molecular techniques show genetic polymorphisms species strain levels enabled study yeast diversity wine fermentation review summarize mechanisms involved generating genetic polymorphisms yeasts molecular methods used unveil genetic variation utility polymorphisms differentiate strains populations species order infer evolutionary history adaptive evolution wine yeasts identify influence biotechnological sensorial properties
otitis media middle ear inflammation common paediatric disease leads significant morbidity although understanding underlying disease mechanisms hampered complex pathophysiology clear epithelial abnormalities underpin disease currently lack well characterised vitro model middle ear epithelium replicates complex cellular composition middle ear report development novel vitro model mouse middle ear epithelial cells mmecs air liquid interface ali recapitulates characteristics native murine epithelium demonstrate mmecs undergo differentiation varied cell populations seen within native middle ear proteomic analysis confirmed cultures secrete multitude innate defence proteins apical surface showed mmecs supported growth otopathogen nontypeable haemophilus influenzae nthi suggesting model successfully utilised study host pathogen interactions middle ear overall mmec culture system help better understand cell biology middle ear improve understanding pathophysiology model also potential serve platform validation treatments designed reverse aspects epithelial remodelling underpin development
understanding role nucleic acids regulating process life growing rapidly researchers delve deeper cellular activity molecules microrna small interfering rna long non coding rna oligonucleotide chemist confronted challenge synthesizing tools needed continue work furthermore new applications developed require increasingly complicated oligonucleotide constructs review explore current challenges confronting oligonucleotide synthesis describe chemistry enzymology developed response challenges discuss future challenges yet unmet
dna based individual identification rna based tissue identification represent two commonly used tools forensic investigation aiming identify crime scene sample donors helping provide links dna identified sample donors criminal acts currently however analyses typically performed separately proof principle study developed approach simultaneous analysis forensic strs amelogenin forensic mrnas based parallel targeted dna rna sequencing using ion torrent personal genome machine pgm system coupled ampliseq targeted amplification demonstrated autosomal strs commonly used individual identification csfpo tpox vwa amelx amely system widely applied sex identification mrna markers previously established forensic tissue identification alas sptb peripheral blood mmp mmp menstrual blood htn stath saliva prm tgm semen cypbp muc vaginal secretion ccl lcec skin together two candidate reference mrna markers hprt sdha successfully combined unambiguous mrna based tissue identification achieved samples forensically relevant tissues tested str sequencing analysis tissue sample donors concordant conventional str profiling using commercial kit successful str analysis obtained genomic dna mrna analysis total rna however sensitivity limits investigated proof principle study expected much lower since dried materials noticeable rna degradation small dna rna amplicons high coverage sequencing used achieved correct individual tissue identification demonstrates suitability approach analyzing degraded materials future forensic applications overall study demonstrates feasibility simultaneously obtaining multilocus str amelogenin multilocus mrna information combined individual tissue identification small sample degraded biological material moreover study marks first step towards combining many dna rna markers various forensic purposes increase effectiveness molecular forensic analysis allow forensically relevant information obtained limited forensic material elsevier ireland ltd rights reserved
stem cells fundamental human life offer great therapeutic potential yet biology remains incompletely cases even poorly understood field stem cell biology grown substantially recent years due combination experimental theoretical contributions experimental branch work provides data ever increasing number dimensions theoretical branch seeks determine suitable models fundamental stem cell processes data describe application population dynamics biology amongst oldest applications mathematics biology population dynamics perspective continues offer much today describe impact perspective made field stem cell biology using hematopoietic stem cells model system discuss approaches used study key properties capacity self renewal differentiation cell fate lineage choice also discuss relevance population dynamics models stem cells cancer competition naturally emerges influential factor temporal evolution cell populations
role ethanol human health nutrition complex ethanol macronutrient energy source capable providing calories essential biological activities human organism replication function maintenance individual cells energy physical work thermogenesis ethanol differs principal dietary macronutrient energy sources glucose fatty acids amino acids two fundamentally important ways first although classes energy compounds macromolecular storage form glycogen glucose lipids fatty acids protein amino acids storage form ethanol second fuel consumption multicellular organisms coordinated prioritized largely regulation entry energy source cell sugars fatty acids amino acids transport across plasma membrane mediated proteins thus providing easy mechanism regulation contrast ethanol freely diffuses across plasma membranes requiring protein mediated transport properties ethanol define unique role hierarchal position macronutrient human nutrition chronic excessive consumption ethanol leads disease low moderate consumption shown reduce risk certain high incidence diseases numerous epidemiological studies documented reduced risk coronary heart disease usually accompanies regular consumption moderate level ethanol also recently reported ethanol consumption reduces risk development adult onset non insulin dependent diabetes mellitus niddm protective effect dietary alcohol attributed increase hdl cholesterol associated apolipoproteins however effect alcohol hdl lipoproteins fully account protective role dietary ethanol therefore ethanol must important effects human metabolism increased risk coronary heart disease niddm recently shown associated increased risk several diseases insulin resistance underlying cause insulin resistance results progressive cascade abnormalities associated macronutrient fuel metabolism metabolic derangement first described reaven termed syndrome explanation health promoting effects moderate ethanol consumption may lie part ethanol role macronutrient energy source ability affect onset development progression syndrome review describe current level understanding ethanol metabolism effects metabolism macronutrient energy sources discuss possible role ethanol syndrome reduced risk coronary heart disease
present cases unresectable cancer cured genetic mutations emt cancer stem cells three major issues linked poor prognosis cases connected inter intra tumor heterogeneity issues inter intra tumor heterogeneity genetic mutation could resolved recent future technologies deep sequencers whereas regarding issues genome different epigenome phenotype expect solve many problems future research stem cell biology herein review discuss three major issues biology cancers especially standpoint stem cell biology
careful characterization standardization composition plant derived food supplements essential establish cause effect relationship intake product health effect review follow specific grape seed extract containing monomeric oligomeric flavan ols creation jack masquelier towards botanical remedy nutraceutical proven health benefits preparation research history parallels advancing insights fields molecular biology medicine plant nutritional sciences last years analysis extract flavanol composition emerged unspecific colorimetric assays precise high performance liquid chromatography mass spectrometry proton nuclear magnetic resonance fingerprinting techniques early recognition preparation auspicious effects permeability vascular capillaries directed research unravel underlying cellular molecular mechanisms recent clinical data revealed multitude favorable alterations vasculature upon weeks supplementation summed health benefit extract healthy humans changes gene expression inflammatory pathways volunteers leukocytes suggested involved benefit historically grown scientific evidence preparation health effects paves way elucidate metabolic fate molecular action humans
home health care workers interventions implemented western countries improve health status patients respiratory diseases especially asthma allergic illnesses twenty six controlled studies dealing prevention control diseases home environmental interventions reviewed comprehensive description characteristics studies effectiveness intervention evaluated terms participants compliance intervention program improvement quality indoor environment finally improvement health outcomes detailed tables limitations biases studies also discussed overall review aims giving toolbox home health care workers target appropriate measures improve health status patient depending environment disease case case approach achievable measures warrant efficacy home interventions review also provide research community tool better identify targets focus future evaluation studies home health care workers action american academy allergy asthma immunology allergy clin immunol pract
arabidopsis thaliana late embryogenesis abundant gene atem required normal seed development buffering rate dehydration latter stages seed maturation however function salt stress tolerance fully understood investigation cell suspension cultures three plant species rice oryza sativa cotton gossypium hirsutum white pine pinus strobes transformed using agrobacterium tumefaciens strain lba harboring pbi atem integration atem gene genome rice cotton white pine confirmed polymerase chain reaction southern blotting northern blotting analyses three transgenic cell lines sativa hirsutum strobus used analyze salt stress tolerance conferred overexpression atem gene results demonstrated expression atem gene enhanced salt tolerance transgenic cell lines decrease lipid peroxidation increment antioxidant enzymes ascorbate peroxidase glutathione reductase superoxide dismutase activities observed transgenic cell lines compared non transgenic control rice atem increased expression dependent protein kinase genes oscpk oscpk oscpk oscpk oscpk oscpk treatment salt results suggested overexpression atem gene transgenic cell lines improved salt stress tolerance regulating expression dependent protein kinase genes overexpression atem gene could alternative choice engineering plant abiotic stress tolerance
recent developments understanding role bile acids bas signalling molecules human metabolism inflammation opened new avenues field hepatology research bas longer considered simple molecules helping fat digestion agents real therapeutic value treating complex autoimmune metabolic liver diseases bas receptors farnesoid receptor transmembrane protein coupled receptor peroxisome proliferator activated receptor identified novel targets drug development novel pharmaceuticals already clinical evaluation advanced drugs reached phase iii trials chronic liver diseases primary biliary cholangitis primary sclerosing cholangitis nonalcoholic fatty liver disease limited pharmacotherapy likely gain developments review discuss recent relevant basic clinical research findings related bas implications novel therapy chronic liver diseases
thirteen percent individuals african ancestry express two variant copies gene encoding apolipoprotein apol associated increased risk end stage renal disease esrd general population limited studies suggest survival transplanted kidneys donors expressing two apol risk alleles inferior kidneys donors zero one risk allele living kidney donation two case reports describe donors expressing two apol risk alleles developed esrd given potential impact apol variants utility safety kidney transplantation living kidney donation american society transplantation convened meeting goals summarizing current state knowledge respect transplantation apol identifying knowledge gaps studies address gaps considering approaches integrating apol clinical practice authors recognize current data sufficient support traditional evidence based guidelines also recognize may require several years generate necessary data thus approaches apol might currently integrated clinical decision making process considered report summarizes group deliberations
order govern cell specific behaviors tissue engineering neural repair regeneration better understanding material cell interactions especially bioelectric functions extremely important graphene reported potential candidate use scaffold neural interfacing material however bioelectric evolvement cell membranes conductive graphene substrates remains largely uninvestigated study used neural stem cell nsc model explore possible changes membrane bioelectric properties including resting membrane potentials action potentials cell behaviors graphene films proliferation differentiation conditions used combination single cell electrophysiological recordings traditional cell biology techniques graphene affect basic membrane electrical parameters capacitance input resistance resting membrane potentials cells graphene substrates strongly negative proliferation differentiation conditions also nscs progeny graphene substrates exhibited increased firing action potentials development compared controls however graphene slightly affected electric characterizations mature nsc progeny modulation passive active bioelectric properties graphene substrate accompanied enhanced nsc differentiation furthermore spine density synapse proteins expressions synaptic activity increased graphene group modeling electric field conductive graphene substrates suggests electric field produced electronegative cell membrane much higher graphene substrates control might explain observed changes bioelectric development graphene coupling results indicate graphene able accelerate nsc maturation development especially regard bioelectric evolvement findings provide fundamental understanding role conductive materials tuning membrane bioelectric properties graphene model pave way future studies development methods materials manipulating membrane properties controllable way nsc based therapies elsevier ltd rights reserved
fundamental concepts biochemistry important drug design often lack connection macroscopic world difficult students grasp particularly introductory science courses high school college level educational research shown multisensory teaching facilitates learning teaching high school college level almost exclusively limited visual auditory senses approach neglects lifetime experience students bring classroom form taste perception makes teaching less supportive sensory impairment article outline novel guided inquiry activity utilizes taste perception series natural artificial sweetener solutions introduce concepts substrate affinity selectivity context drug design findings study demonstrate clear gains student knowledge well increase enthusiasm fields biochemistry drug design international union biochemistry molecular biology
platymonas tetraselmis subcordiformis unicellular marine green alga found sensitive herbicide basta sensitivity test indicating could employed selective agent bar gene practicable selectable marker gene vector containing expression cassette bar gene transferred subcordiformis particle bombardment glass bead agitation transformants selected using basta finally southern blotting analysis indicated bar gene successfully integrated nuclear genome subcordiformis using transgenic techniques transformation efficiency glass bead method slightly higher particle bombardment first report stable transformation subcordiformis improve fundamental research enlarge application alga
human metabolism studies found oral application ethylhexyl phthalate dehp diisononyl phthalate dinp propylheptyl phthalate dphp least respectively excreted via urine contrast short chain phthalates oxidized products simple monoesters found main metabolites based urinary phthalate metabolite concentrations estimated german subjects years age median daily intakes day dehp butyl phthalate diisobutyl phthalate dinp butylbenzyl phthalate general children higher exposures compared adults seem effective oxidative metabolism phthalates individual phthalates tolerable daily intake tdi values deduced however rats phthalates shown act endocrine disrupters via common mechanism action dose additive manner therefore concept cumulative tdi value may appropriate consideration overall exposure potential human health risks resulting everyday simultaneous exposure several phthalates
process cardiac remodeling connective tissue growth factor ctgf ccn secreted cardiac myocytes though ctgf well known promote fibroblast proliferation pathophysiological effects cardiac myocytes remain elucidated study examined biological effects ctgf rat neonatal cardiomyocytes cardiac myocytes stimulated full length ctgf terminal region peptide showed increase cell surface area similar hypertrophic ligands protein coupled receptors endothelin ctgf activated amino acid uptake however ctgf induced hypertrophy associated increased expression skeletal actin bnp analyzed northern blotting ctgf treatment activated erk mapk jnk akt inhibition akt transducing dominant negative akt abrogated ctgf mediated increase cell size inhibition map kinases affect cardiac hypertrophy findings indicate ctgf novel hypertrophic factor cardiac myocytes elsevier inc rights reserved
introduction botulinum toxin used many medical specialties treat muscle hyperactivity exocrine gland hyperactivity pain disorders drugs consist botulinum neurotoxin bnt complexing proteins excipients antibodies formed bnt formed bnt btab block therapeutic efficacy thus producing antibody induced therapy failure abtf areas covered applied btab functional balance within body abtf rare influences treatment algorithms therapy considerably abtf risk factors include doses given interinjection intervals booster injections immunological quality drug testing btab interpretation abtf complicated management abtf frustrating prevention abtf major importance improved antigenicity new drugs may improve treatment algorithms therapy substandard antigenicity may likely end expert commentary concern abtf influenced treatment algorithms therapy considerably better understanding abtf may improve thus outcome therapy new drugs may improved antigenicity especially removed may however fail antigenicity problems
multicellular spheroids studied fields oncology stem cell biology tissue engineering study found new polymer material thermo controlled spheroid monolayer cell culture switching polymers pendant ureido groups ureido polymers exhibited upper critical solution temperature type phase separation behavior cells monolayer culture converted spheroids addition ureido polymers phase separation temperature time lapse observations indicated cells began migrate aggregate form spheroids avoid contact phase separated polymer coacervates surface culture dish supposed coacervates seemingly suppressed interaction cell dish surface extracellular matrices increasing culture temperature spheroids began collapse monolayer cells due dissolution coacervates results indicated cell morphology could repeatedly switched changing culture temperature presence ureido polymers
british journal biomedical science published reports outlining specific advances various disciplines within biomedical science one review original articles brief reports one letter editor majority blood science biochemistry haematology immunology infection science microbiology virology smaller number cellular sciences cellular pathology cytopathology three reports considered biochemistry immunology another reported advance identification chromosomal abnormalities present report summarise key aspects publications greatest relevance laboratory scientists
previously reported successful induction complete spermatogenesis mice neonatal testis tissues cultured agarose gel culture medium supplemented bovine serum albumin product albumax method however examined fetal testis tissues report tested culture method fetal testes acrosin acr gfp transgenic mouse whose testicular germ cells express gfp midmeiotic phase onward using albu max containing medium fetal testis days postcoitum dpc back dpc showed spermatogenic progression produced haploid cells culture hand testes dpc earlier show meiotic sign acr gfp expression regardless fetal age tissue masses enlarged culture period elongation thickening seminiferous tubules simple culture method could useful experimental system investigate fetal testicular development germ cell biology
many grained mutants occurring spontaneously among less well endowed field mates may appeared early farmers fortunate twists fate foreboding wealth abundance domesticated barley number kernel rows spike tripled recessive mutant alleles six rowed spike vrs locus abolish suppression lateral spikelet fertility another barley row type called intermedium spike int lateral floret size often intermediate six two rowed types phenotypic sequence analyses intermedium spike collection revealed genes increase size florets even stimulate occasional grain setting lateral spikelets show complete six rowed phenotype occurs diverse panel intermedium spike barley carrying wildtype vrs presence int allele intermedium spike int gene previously considered modifier lateral spikelet fertility int type alleles arisen domestication associated enlargement lateral florets wild barley suggesting natural selection evolution acts towards reduced lateral floret size since int overcome suppression lateral florets genomic background wild barleys infer existence gene loci novel alleles allelic combinations selected domestication increase grain number barley independently vrs
classically mast cells considered important actors innate immune response playing pivotal role ige mediated allergic antiparasite responses last two decades many experimental evidences demonstrated hematopoietic derived cells present connective mucosal tissues also key modulators adaptive immune response could contribute autoimmune disease notably rheumatoid arthritis recently bader meunier reported series patients suffering inflammatory joint diseases associated mastocytosis suggesting mastocytosis associated higher prevalence spondyloarthritis discuss possible link chronic inflammatory arthritis mastocytosis report clinical case describing patient developing long history mastocytosis great interest antihistamine treatment alone sufficient treat patient
background reactions rituximab occur frequently patients developing reaction initial exposure safety rechallenging patients reaction clear standard guidelines lacking objective better understand clinical decision making surrounding rituximab reactions subsequent rechallenge methods performed year retrospective review rituximab reactions large academic outpatient infusion center patients demographic characteristics clinical symptoms management reactions reviewed reaction severity classified using standard criteria results june january patients mean age years men least rituximab reaction identified reactions occurred first exposure rituximab reactions grade fifty one patients rechallenged rituximab day initial reaction patients grade reaction tolerated rechallenge conversely patients grade reaction reaction rechallenge outcome day rechallenge initial grade reaction varied patients tolerated day challenge patients reaction grade severity conclusions consistent previous data observations suggest patients experience grade reactions rituximab safely rechallenged day grade reaction prompt referral allergy specialist risk assessment additional rituximab administration research needed understand optimal management patients grade reactions american academy allergy asthma immunology
herein present smart enzymatic sensor based nanoporous anodic alumina naa photoluminescence visible range produced structure naa functionalized activated order perform enzyme immobilization controlled manner whole process monitored spectrum stage characterized exclusive barcode associated oscillations characteristic property allows calculate change effective optical thickness takes place stage makes possible accurately detect quantify immobilized enzyme within naa structure finally naa geometry pore length diameter optimized improve enzyme immobilization detection inside pores enzymatic sensor give quick accurate measurements enzyme levels crucial clinical enzymology prevent detect diseases primary stage
study evaluated effect aluminosilicate mineral additive biotite growth performance immunological adrenal responses weaned pigs escherichia coli lipopolysaccharide lps challenge thirty two crossbred weaned pigs used factorial experiment dietary treatment basal diet without supplementation lps challenge challenged challenged two main factors day pigs injected intraperitoneally either body weight lps equivalent amount sterile saline blood samples collected first challenge followed total differential leukocyte counts analysis plasma tumor necrosis factor alpha tnf alpha prostaglandin pge cortisol insulin biochemical parameters body weight feed intake measured weekly throughout week experiment results showed lps challenges reduced average daily gain adg increased feed gain decreased feed gain immunology challenged pigs lps challengexdiet interactions observed adg feed gain challenge lps challenge reduced number white blood cells lymphocytes monocytes neutrophils lps challengexdiet interaction observed plasma tnf alpha concentration showing decreased plasma tnf alpha response lps challenged pigs receiving lps challenge diet interaction observed plasma cortisol pge diet effect plasma insulin glucose showing increased plasma insulin decreased glucose supplementation lps challengexdiet interaction observed conclude improved weight gain feed efficiency weaned pigs immunological challenge suppressing proinflammatory cytokine release
methylation cytosine bases methylcytosine occurring vertebrate genomes usually associated transcriptional silencing hydroxylmethylcytosine hmc formylcytosine carboxylcytosine cac recently discovered modified cytosine bases produced enzymatic oxidation whose biological functions remain relatively obscure number approaches ranging biochemical antibody based techniques employed study genomic distribution global content modifications various biological systems although approaches useful quantitative assessment modified forms methods provide spatial information regarding distribution dna modifications different cell types required correct understanding functional roles present highly sensitive method immunochemical detection modified forms cytosine method permits detection epigenetic marks protein lineage markers employed study nuclear localization thus contributing deciphering potential biological roles different experimental contexts
background objectivesvariant rhd genes associated weak phenotype result complete partial epitope expression red cell study examines genetic classification australian blood donors weak phenotype correlates rhd variants associated weak phenotype epitope profile materials methodsfollowing automated manual serology blood samples donors reported weak rhd genotyped commercial snp typing platform sanger sequencing two commercial anti antibody kits used extended serological testing epitope profiles resultsthree samples wild type rhd exonic sequences samples rhd variants rhd weak type rhd weak type rhd weak type detected donors remaining samples exhibited different rhd variants one donor exhibited novel rhd lacking one epitope weak types showed partial epitope profile conclusionthe array rhd variants detected study indicated diversity australian donor population needs accommodated future genotyping strategies
small leucine rich proteoglycans components extracellular matrix regulates neoplastic transformation among small leucine rich proteoglycans decorin biglycan lumican commonly implicated markers expression well studied various malignancies novel study collectively evaluated expression three molecules urothelial carcinoma bladder thirty patients confirmed untreated bladder cancer healthy controls blood controls adjacent non tumour tissue enrolled blood collected subjects tumour adjacent normal tissue obtained patients circulatory levels estimated enzyme linked immunosorbent assay relative messenger rna expression quantitative polymerase chain reaction protein expression immunohistochemistry western blotting circulatory levels biglycan lumican significantly elevated decorin significantly reduced patients compared controls protein expression immunohistochemistry western blotting showed elevated expression lumican biglycan lower expression decorin urothelial carcinoma bladder quantitative polymerase chain reaction messenger rna expression tissue specimens revealed significantly higher expression biglycan lumican lower expression decorin urothelial carcinoma bladder molecules receiver operating characteristic curve showed cut serum lumican provided optimum sensitivity specificity significant alteration matrix small leucine rich proteoglycans urothelial carcinoma bladder observed higher expression lumican bladder cancer patients cut value highest optimum sensitivity specificity shows importance potential non invasive marker early detection ubc following validation large patient cohort
context dipeptidyl peptidase dpp inactivates incretin hormone glucagon like peptide also affect orexigenic hormone neuropeptide npy truncated dpp npy consequence npy affinity changes receptor mediates antilipolytic function npy npy receptors little known whether dpp inhibitors treatment type diabetic tdm patients could influence pathways aims investigate vitro effects npy dpp inhibition isolated abdominal subcutaneous abdsc adipocytes fat metabolism assessment npy receptor dpp expression adipose tissue methods vivo human taken women undergoing elective surgery body mass index mean age years isolated abdsc adipocytes treated human recombinant npy without dpp inhibitor glycerol release tissue distribution dpp messenger rna mrna measured compared lean obese subjects results conclusion rhnpy reduced glycerol release effect enhanced incubation dpp inhibitor control mean mol npy mmol npy dpp inhibitor mol dpp expressed abdsc omental relative dpp mrna expression lower abdsc taken obese signal units lean subjects predominantly expressed fat present fat depots higher obese subjects particularly abdsc depot obese lean npy appears regulated derived dpp dpp inhibitors augment antilipolytic effect npy studies required show whether explains lack weight loss tdm patients treated dpp inhibitors
nkx gene encodes transcription factor plays critical role heart development humans heterozygous mutations nkx result congenital heart defects chds however molecular mechanisms mutations cause disease remain unknown nkx mutation reported associated atrial septal defect asd atrioventricular block patients one family mutation located within dna binding domain nuclear localization sequence nkx protein pathogenesis chds humans point mutation well understood examine functional deficit associated mutation vivo generated characterized knock mouse harbours human mutation systematic structural functional examination embryonic newborn adult mice revealed homozygous embryos nkx ric developmentally arrested around delayed heart morphogenesis downregulation nkx target genes anf mlcv actc histological examination nkx newborn hearts showed displayed asd least adult heterozygotes displaying septal defect moreover heterozygous nkx newborn mice downregulation ion channel genes adult mice manifesting prolonged interval indicative degree block collectively present study demonstrates mice point mutation nkx allele phenocopies humans nkx point mutation elsevier ltd rights reserved
probabilistic ecological risk assessment conducted transformation products tps beta blockers atenolol metoprolol propranolol selective serotonin reuptake inhibitors ssris citalopram fluoxetine fluvoxamine paroxetine sertraline assess potential threats aquatic organisms effluent dominated surface waters end pharmacokinetic literature university minnesota biocatalysis biodegradation database pathway prediction system aerobic microbial degradation software photolysis literature pertaining beta blockers ssris used determine likely tps formed via human metabolism aerobic biodegradation photolysis respectively monitoring data north american european surface waters receiving human wastewater inputs basis exposure characterizations parent compounds tps available cases monitoring data tps exist assumed conservative parent production ratio parent converted environmental protection agency usepa episuite ecosar software used estimate acute chronic toxicities aquatic organisms hazard quotients calculated using percentile exposure distributions ranged significantly less based results tps interest would expected pose little environmental risk surface waters receiving wastewater inputs overall recommend developing analytical methods isolate quantify human metabolites tps environmentally relevant concentrations confirm predictions recommend identifying major species tps classes pharmaceuticals could elicit toxic effects via specific modes action norfluoxetine via serotonin hydroxytryptamine receptors conducting aquatic toxicity tests confirm findings knowledge first quantitative probabilistic ecotoxicological assessment predicted probable tps pharmaceuticals approach provides framework future studies compound classes data become available setac
gastrointestinal immune system plays pivotal role host relationship food antigens homeostatic microbiome enteric pathogens describe collect process liver intestinal samples efficiently isolate analyse resident immune cells furthermore describe step step methodology showing high dimensionally immunophenotype resident leucocytes using cytometry time flight providing well characterized antibody platform allows identification every leucocyte subset simultaneously protocol also includes instructions purify cultivate primary murine hepatocytes powerful tool assess basic cell biology toxicology assays gut liver samples mouse collected processed stained less protocol enables recovery several populations purified viable immune cells solid fibrous organs preventing unwanted loss adherent cells isolation
origin evolution molecular mechanisms underlying self renewal differentiation spermatogonial stem cells sscs fundamental questions stem cell biology well reproduction medicine mammals glial cell line derived neurotrophic factor gdnf crucial ssc self renewal maintenance however nonmammals role gdnf sscs still remains unknown study report two gdnf homologs medaka fish oryzias latipes namely olgdnfa olgdnfb promote proliferation activity retain spermatogonial property spermatogonial cell line derived adult medaka showing intrinsic property sscs self renewal differentiation potential years culture cloning sequencing led identification two cdna sequences olgdnfa olgdnfb length amino acid residues respectively homologs mammalian gdnf share identity known vertebrate homologs importantly well defined condition recombinant proteins olgdnfa olgdnfb significantly promote proliferative activity cells retain spermatogonial gene expression pattern alkaline phosphatase activity meanwhile two recombinant proteins upregulate mrna expression level bclb one prominent gdnf regulated genes involved ssc self renewal maintenance mammals taken together findings suggest like mammalian counterpart nonmammalian gdnfs might mediate self renewal maintenance sscs moreover bclb might conserved regulator ssc self renewal across vertebrate taxa study extends knowledge gdnf functions ssc biology evolution
background suitable diagnostic markers cancers urgently required clinical practice long non coding rnas reported many cancer types potential new class biomarkers tumor diagnosis results five lncrnas including inhba mir uca cebpa validated increased gastric cancer tissues furthermore found plasma level five lncrnas significantly higher gastric cancer patients compared normal controls receiver operating characteristic analysis found combination plasma lncrnas area curve including inhba mir cebpa better indicator gastric cancer individual levels lncrna combinations simultaneously found expression levels series mir fragments different gastric cancer plasma samples higher healthy control plasma samples materials methods lncrna gene expression profiles analyzed two pairs human gastric cancer adjacent non tumor tissues microarray analysis nine gastric cancer associated lncrnas selected assessed quantitative real time polymerase chain reaction gastric tissues analyzed gastric cancer patients plasma conclusions results demonstrate certain lncrnas inhba mir cebpa enriched human gastric cancer tissues significantly elevated plasma patients gastric cancer findings indicate combination four lncrnas might used diagnostic prognostic markers gastric cancer patients
hepatocellular carcinoma major form primary liver cancer second sixth leading cause cancer related death men women respectively extensive research indicates wnt beta catenin signaling pathway plays pivotal role growth development differentiation hepatocellular carcinoma one major signaling pathways dysregulated hepatocellular carcinoma cyclin proto oncogene one major regulators wnt signaling pathway overexpression detected various types cancers including hepatocellular carcinoma using several validated bioinformatic databases predicted micrornas capable targeting untranslated region cyclin messenger rna according results mir selected highest ranking microrna targeting cyclin messenger rna luciferase assay recruited confirm bioinformatic prediction results cyclin expression first assessed quantitative real time polymerase chain reaction hepg cell line afterward hepg cells transduced lentiviruses containing mir expression mir cyclin evaluated results luciferase assay demonstrated targeting untranslated region cyclin messenger rna mir furthermore fold decline cyclin expression observed lentiviral induction mir hepg cells results highlighted considerable effect mirna induction regulation cyclin gene results suggest mir used novel candidate therapeutic purposes biomarker hepatocellular carcinoma diagnosis
purpose combined modality therapy mainstay option thoracic malignancies head neck cancers integration different strategies based multidisciplinary approach modern clinical oncology radiation oncologists educated trained updated provide state art care cancer patients thus educational meetings crucial methods italian association radiation oncology young members working group airo giovani organized national meeting focused combination therapy lung esophageal head neck cancer specific focus larynx preservation strategies larynx hypopharynx tumors involving young professionals working italy meeting addressed young radiation oncologists presenting state art knowledge based latest evidence field performed review current literature based highlights congress results multimodality approach head neck thoracic malignancies includes surgery chemotherapy radiotherapy also take account new information data coming basic translational research including molecular biology genetics immunology aspects crucial treatment non small cell lung cancer esophageal esophagogastric junction larynx hypopharynx malignancies integration different treatments clinical decision making process combine therapies crucial conclusions combination therapy proved consolidated approach specific oncologic settings highlighting importance multimodality management modern clinical oncology dedicated meetings specific topics helpful improve knowledge skills young professionals radiation oncology
agrochemicals xenobiotics metabolized xenobiotic metabolizing enzymes xmes products may less toxic parent chemical regard phase xmes cytochrome cyps primary importance interactions level metabolism may take place via either inhibition induction xmes interactions often investigated vitro experimental animals using subcellular fractions liver microsomes seldom humans level individual xme isoforms authors investigating metabolism number agrochemicals human liver microsomes recombinant cyp isoforms recently embarked studies induction xmes human hepatocytes insecticides chlorpyrifos carbaryl carbofuran fipronil well repellant deet extensively metabolized human liver microsomes although number cyp isoforms may involved cypb cypa usually important permethrin hydrolyzed esterase present human liver microsomes cytosol number metabolic interactions observed chlorpyrifos phosphorothioates potent inhibitors cyp dependent metabolism endogenous substrates testosterone estradiol exogenous substrates carbaryl presumably result interaction highly reactive sulfur released oxidative desulfuration reaction heme iron cyp hydrolysis permethrin human liver inhibited chlorpyrifos oxon carbaryl fipronil inhibit testosterone metabolism cypa effective inducer cyp isoforms human hepatocytes society chemical industry
protein phosphorylation one major pathways used eukaryotic cells propagate signals final effectors regulating multiple aspects living cell metabolism growth differentiation adhesion motility genome stability death context tyrosine kinases tks play central role signal transduction overexpression disregulated activity implicated tumor onset malignancy progression date eight tks inhibitors approved fda treatment specific tumors spite efficacy insurgence resistance common feature prolonged administration selective pressure drugs fact induces clonal expansion subsets cancer cells harboring tks mutations leading decreased inhibition potency alternatively resistance inhibitors acquired activation others often unrelated tks reason stringent target selectivity tks inhibitors always considered desirable feature order limit toxicity molecules targeting different tks recently shown promising anti cancer agents well understanding molecular mechanisms confer resistance inhibitors combination enzymatic structural cellular studies essential development second generation inhibitors active also towards drug resistant tumors
altered microrna mirna expression found promote carcinogenesis little known role mirnas esophageal cancer study selected mirnas analyzed expression esophageal cancer cell lines tissue specimens using northern blotting situ hybridization respectively found let mir mir expressed cell lines mir mir expressed cell lines mir mir mir mir mir expressed cell lines others addition transient transfection mir inhibited met cyclin expression esophageal cancer cell proliferation whereas mir suppressed rar beta expression increased tumor cell proliferation furthermore found mir expression associated tumor cell dedifferentiation lymph node metastasis mir associated lymph node metastasis mir associated higher pathologic disease stages patients esophageal adenocarcinoma kaplan meier analysis showed mir expression mir expression associated shorter overall disease free survival esophageal cancer patients addition mir mir mir expression associated shorter overall disease free survival patients esophageal adenocarcinoma however mir mir mir expression associated overall disease free survival squamous cell carcinoma patients data indicate evaluation mir mir prognostic biomarkers warranted patients esophageal adenocarcinoma addition role mir esophageal cancer also warrants study
phaeodactylum tricornutum widely used model organism studying diatom biology created tricornutum specific literature database bibliome interactively annotated users improve relevance accuracy search queries bibliome represents current knowledge specific organism biological process foundation genome scale computation models bibliome tricornutum assembled literature searches tricornutum topic two different existing databases web knowledge pubmed resulting independent articles manually curated bibliome relevance biochemical physiological molecular biology studies literature described use tricornutum feed source ecotoxicology studies excluded bibliome process resulted final list entries received additional classification form notes keywords present bibliome html format easily searched customized according interests individual researchers html tool also easily adapted algal species specific research topics elsevier rights reserved
introduction glial neuronal tumors gnt pleomorphic xantho astrocytoma pxa ganglioglioma display braf mutation represents diagnostic clue entities targeted therapies braf protein shown promising results gnt aim study assess utility braf immunohistochemistry ihc clone daily practice series glial gnt compared molecular biology techniques methods performed braf ihc cases used sanger sequencing allele specific quantitative pcr asq pcr detect braf mutation sufficient amount materiel available results braf immunostaining detected cases cases agg pxa pilocytic astrocytomas cases could performed sanger sequencing asq pcr cases asq pcr cases sanger sequencing two cases initial tumors sanger sequencing identified braf mutation tumors seven tested cases asq pcr showed mutation tumors tested cases six cases one pxa results discordant ihc five cases immunopositive braf wild type techniques another percentage mutated ganglion cells low sanger sequencing failed detect mutation detected ihc asq pcr conclusions tumors mutated cells anti braf ihc appears sensitive sanger sequencing latter although considered gold standard used front detect braf mutation combination ihc asq pcr appears efficient appraise indication targeted therapies glioneuronal tumors
transcriptional patterns mitochondrial respiratory related genes investigated cytoplasmic male sterile fertile maintainer lines stem mustard brassica juncea numerous differences nad subunit nadh dehydrogenase stem mustard cms maintainer line one novel open reading frame hereafter named orfb gene located downstream mitochondrial nad gene cms novel orfb gene high similarity ymf family protein orfb raphanus sativus helianthus annuus nicotiana tabacum beta vulgaris orfb cms daucus carota atp gene arabidopsis thaliana flanking orf napus nap cms flanking orf gene cms brassica juncea three copies probed specific fragment amplified primers nadf nadr cms found cms line following southern blotting digested hindiii single copy maintainer line meanwhile two transcripts shown cms line following northern blotting one transcript detected maintainer line probed specific fragment amplified primers nadf nadr cms meanwhile expression nad gene reduced cms bud compared maintainer line thus suggested nad gene may transcripted cms associated orfb gene cms addition specific fragment amplified primers nadf nadr spanned partial sequences nad gene orfb gene alterations nad gene would impact activity nadh dehydrogenase subsequently signaling inducing expression nuclear genes involved male sterility type cytoplasmic male sterility
fusarium head blight fhb mainly caused fusarium graminearum species complex fgsc also species genus one destructive cereal diseases high yield losses mycotoxin contamination worldwide aim study identify fusarium species characterize virulence factors trichothecene genotypes cell wall degrading enzymes cwdes also investigate virulence isolates obtained wheat plants fhb symptoms golestan province iran among isolates tested graminearum sensu stricto six proliferatum four culmorum three isolates belonged subglutinans meridionale species one isolate asiaticum identified among fusarium isolates nivalenol niv genotype could found frequently followed acetyl deoxynivalenol adon acetyl deoxynivalenol adon genotypes production trichothecenes autoclaved rice cultures analyzed gas chromatography confirmed mean levels niv adon adon produced fusarium spp respectively fusarium isolates capable producing cwdes mainly cellulase xylanase lipase pectinase activities appeared later less quantities overall isolates graminearum proliferatum showed maximum activity cwdes correlated high level virulence aggressiveness wheat hand correlation observed level type trichothecene produced isolate virulence wheat virulence trichothecene producing isolates higher non trichothecene producing isolates results suggested cwdes trichothecenes virulence factors considerable roles virulence aggressiveness pathogen first report effect trichothecenes cwdes virulence aggressiveness fusarium spp associated fhb disease wheat growing regions iran
healthy subjects tissues human body display metabolic flexibility mean ability tissue switch fuel source predominantly carbohydrates postprandial state predominantly fats fasted state many pathways involved human metabolism controlled insulin insulin resistant states obesity type diabetes characterised loss impairment metabolic flexibility paper derive system first order coupled differential equations describe transport storage different tissues human body find steady state solutions equations use results nondimensionalise model solve model numerically simulate healthy balanced meal high fat meal discuss compare results numerical results show good agreement experimental data data available results show behaviour agrees intuition currently data compare
regulatory cells tregs integral part peripheral tolerance suppressing immune reactions self structures thus preventing autoimmune diseases clinical approaches adoptively transfer tregs deplete tregs cancer underway promising first outcomes number naturally occurring tregs ntregs limited studying certain treg features using vitro induced tregs itregs advantageous date best although absolutely specific protein marker delineate tregs transcription factor foxp despite importance tregs including non redundant roles peripherally induced tregs protocols generate itregs currently controversial particularly human cells protocol therefore describes vitro differentiation human foxp itregs human naive cells using range treg inducing factors tgf beta plus combination retinoic acid rapamycin butyrate parallel also describes phenotyping cells flow cytometry qrt pcr protocols result reproducible expression foxp treg signature genes enable study general foxp regulatory mechanisms well protocol specific effects delineate impact certain factors itregs utilized study various phenotypic aspects well molecular mechanisms treg induction detailed molecular studies facilitated relatively large cell numbers obtained limitation application itregs relative instability foxp expression cells compared ntregs itregs generated protocols also used functional assays studying suppressive function itregs induced tgf beta plus retinoic acid rapamycin display superior suppressive activity however suppressive capacity itregs differ ntregs use appropriate controls crucial
background fluorescent proteins continued shed light cell biology since cdna wild type green fluorescent protein first isolated nowadays remarkable proteins useful tools basic research also clinical medicine highlight taking advantage fluorescent protein based technologies identified signaling network critical influenza virus internalization infection addition developed highly sensitive biosensor monitoring kinase activity utilizes energy transfer fluorescent proteins led high performance clinical test enables prediction future therapeutic responses risk acquired drug resistance individual patient beginning molecular target therapy conclusion technologies utilize fluorescent proteins biosensor presented find increasing applications clinical medicine japanese association oral biology published elsevier rights reserved
hepatocellular carcinoma aggressive neoplasm one common human cancers recently long non coding rnas demonstrated participate pathogenesis many diseases including progression several cancers study found long non coding rna colon cancer associated transcript upregulated hepatocellular carcinoma tissues high colon cancer associated transcript expression level positively associated tumor volume american joint committee cancer stage hepatocellular carcinoma patients luciferase reporter assays rna pulldown assays showed colon cancer associated transcript target mir real time quantitative polymerase chain reaction western blot analysis indicated colon cancer associated transcript regulated cyclin dependent kinase expression competing endogenous rna sponging mir hepatocellular carcinoma cells furthermore colon cancer associated transcript silencing decreased hepatocellular carcinoma cells proliferation invasion overexpression promoted cell proliferation invasion vitro data demonstrated colon cancer associated transcript mir cyclin dependent kinase regulatory pathway promotes progression hepatocellular carcinoma inhibition colon cancer associated transcript expression may novel therapeutic strategy hepatocellular carcinoma
direct structural identification quantitative assessment nmol level full pattern renally excreted metabolites made possible nmr measurements untreated urine samples stable isotope labelled drug analogues administered humans full potential new vivo nmr approach exemplified study group volunteers carboxymethyl cysteine metabolism metabolic sulphoxidation pathway caroxymethyl cysteine man accepted far needs profoundly revised basis nmr results
aims identify molecular networks pseudomonas fluorescens convey resistance toxic concentrations common pollutant hazard biological systems methods results pseudomonas fluorescens strain atcc cultured growth medium millimolar concentrations enzymatic activities metabolite levels monitored aid gel activity assays high performance liquid chromatography respectively oxidative phosphorylation rendered ineffective assimilation citric acid mediated sequentially citrate lyase phosphoenolpyruvate carboxylase pepc pyruvate phosphate dikinase ppdk appeared play key role atp synthesis via substrate level phosphorylation slp enzymes generating antioxidant reduced nicotinamide adenine dinucleotide phosphate nadph enhanced metabolic modules mediating formation pro oxidant reduced nicotinamide adenine dinucleotide nadh downregulated conclusions pseudomonas fluorescens reengineers metabolic networks generate atp via slp stratagem allows microbe compensate ineffective electron transport chain provoked excess significance impact study molecular insights described critical devising strategies bioremediate polluted environments
many organisms maturation trnas catalyzed endoribonuclease rnase rnase cleaves discriminator nucleotide generate substrate addition universal cca sequence however trnas trna precursors already contain cca sequence cleaved thereby avoiding futile cycle removal readdition essential residues show adjacent residues cca sequence arg residue within highly conserved sequence motif channel leading rnase catalytic site required protective effect cca sequence determinants present cca containing rnas channel unable move catalytic site however substitution either residues mutation arg ala allows rna movement catalysis proceed data define novel mechanism trnas protected promiscuous action processing enzyme
large collections data studies cancer leukaemia provoke necessity applying tailored analysis algorithms ensure supreme information extraction work custom fit pipeline demonstrated thorough investigation voluminous mile gene expression data set three analyses accomplished gaining deeper understanding processes underlying leukaemia types subtypes first main disease groups tested differential expression healthy control standard case control study basic knowledge molecular mechanisms confirmed quantitatively literature references second pairwise comparison testing performed juxtaposing main leukaemia types among case means dice coefficient similarity measure general relations pointed moreover lists candidate main leukaemia group biomarkers proposed finally approach successful third analysis provides insight studied subtypes followed emergence four leukaemia subtype biomarkers addition class enhanced deg signature obtained basis novel pipeline processing leads significantly better classification power multi class data classifiers developed methodology consisting batch effect adjustment adaptive noise feature filtration coupled adequate statistical testing biomarker definition proves effective approach towards knowledge discovery high throughput molecular biology experiments
cellular processes mitosis cell differentiation governed changes cell shape largely rely proper remodeling cell cytoskeletal structures involves assembly disassembly higher order macromolecular structures given time location process particularly sensitive perturbations caused overexpression proteins methods preserve protein homeostasis maintain near normal cellular morphology highly desirable determine functional contribution protein interest wide range cellular processes transient depletion rescue experiments based rna interference powerful approaches analyzeprotein functions structural requirements however reintroduction target protein minimum deviation physiological level real challenge describe method termed adenofection developed study role molecular chaperones partners normal operation dividing cells relationship actin remodeling hela cells depleted bag sirna duplexes targeting utr region gfp tagged bag proteins reintroduced simultaneously cells using recombinant adenoviruses coupled transfection reagents adenofection enabled express bag gfp proteins near physiological levels hela cells depleted bag absence stress response effect observed levels endogenous heat shock protein chaperones main stressinducible regulators protein homeostasis furthermore adding baculoviruses driving expression fluorescent markers time cell transduction transfection could dissect mitotic cell dynamics time lapse microscopic analyses minimum perturbation normal mitotic progression adenofection applicable also hard infect mouse cells suitable functional analyses myoblast differentiation myotubes thus adenofection provides versatile method perform structure function analyses proteins involved sensitive biological processes rely higher order cytoskeletal dynamics
date molecular evidence studies bladder cancer using microarray technology focusing transitional cell carcinoma however similar fingerprinting studies rarely performed molecular phenotypes bladder cancer squamous cell carcinoma scc study conducted monitor gene expression profiles bilharzial related scc bladder able compare data transitional cell carcinoma microarray data total paired bilharzial urinary bladder scc specimens corresponding normal urothelium analyzed using complementary deoxyribonucleic acid microarray hybridization approach study molecular basis development scc urinary bladder validation microarray results performed using northern blotting technique supervised analysis microarray data least fold difference expression scc bladder normal urothelium genes total genes regulated scc bladder including matrix degradation related genes growth factors different oncogenes immunology related genes conversely genes regulated scc bladder including integrins laminins cadherins nonmetastatic cell apoptosis related genes findings explain aggressive behavior scc bladder gene profiling studies add understanding mechanisms carcinogenesis may also improve ability diagnose treat bladder cancer elsevier inc rights reserved
multivariate location problem addressed familiar method address problem hotelling test hypothesis normal distributions holds hotelling test optimal unfortunately practice distributions underlying samples generally unknown without assuming normality finite sample unbiasedness hotelling test guaranteed moreover high dimensional data increasingly encountered analyzing medical biological problems situations hotelling test performs poorly computed test unbiased non normal data small sample sizes well two sided alternatives computed high dimensional data recently proposed based ranks interpoint euclidean distances observations five modifications test proposed compared original test hotelling test unbiasedness consistency tests proven problem power computation addressed shown two modified interpoint distance based tests always powerful original test particularly modified test based tippett criterium suggested assumption normality tenable case high dimensional data complex dependence structure typical molecular biology medical imaging practical application case control study functional magnetic resonance imaging used discussed
adipose endothelial dysfunction associated cardiovascular disease perivascular adipose tissue pvat directly surrounds vessels influences vessel function via paracrine effect adenosine monophosphate amp activated protein kinase ampk modulates metabolic pathway thus present study hypothesized activation ampk pvat may regulate endothelial function pathological settings present study investigated effect methotrexate mtx adipocytokine expression pvat emphasis regulation endothelial function effects mtx mechanisms involved investigated using relaxation assay western blot analysis reverse transcription quantitative polymerase chain reaction western blotting used detect mrna protein expression levels elisa assay used quantify level tnf alpha palmitic acid stimulation induced inflammation dysregulation adipocytokine expression pvat mtx treatment inhibited nuclear factor kappa phosphorylation downregulated expression pro inflammatory cytokines including tumor necrosis factor alpha interleukin whereas adiponectin expression increased mtx increased ampk phosphorylation basal inflammatory conditions pvat whereas knockdown ampk via small interfering rna diminished modulatory effect indicating mtx inhibits inflammation ampk dependent manner present study prepared conditioned medium stimulated pvat induce endothelial dysfunction observed pre treatment pvat mtx effectively restored loss acetylcholine induced vasodilation increased endothelial nitric oxide synthase phosphorylation rat aorta results present study demonstrated mtx ameliorated inflammation associated adipocytokine dysregulation thus prevented endothelial dysfunction data provide pharmacological evidence regarding beneficial effects mtx cardiovascular diseases
classical contagious caprine pleuropneumonia one fatal contagious disease goats listed world organization animal health leads major economic losses caused infection mycoplasma capricolum subspecies capripneumoniae order isolate causative agents ccpp first time kingdom saudi arabia fifteen flocks eastern region ahsa dammam hafr albaten ten flocks riyadh kharj regions selected study total samples nasal swabs pleural fluid samples lung samples necropsied animals collected goats showing typical signs ccpp clinical signs diseased cases revealed serous mucoid nasal discharge coughing dyspnea frothy salivation fever degrees necropsied animals showed fibrinous pleuropneumonia increased pleural fluid nasal swabs pleural fluid lung samples mycoplasma isolates recovered respectively biochemically isolates sensitive digitonin fermented glucose sixty seven mycoplasma isolates belonged mycoplasma mycoides cluster based detection rrna polymerase chain reaction screening mycoplasma isolates using specific primer capricolum subsp capripneumoniae confirmed isolates capricolum subsp capripneumoniae elsevier rights reserved
high resolution accurate mass fast scanning features orbitrap mass spectrometer combined separation power ultrahigh performance liquid chromatography applied first time study metabolic profiles several organic flame retardants frs present indoor dust mimic real life exposure vitro cultured hepg human hepatocyte cell lines exposed simultaneously various frs indoor dust extract target parent frs hexabromocyclododecanes alpha beta gamma hbcds tris chloroethyl phosphate tcep tris chloro propyl phosphate tcipp tris dichloro propyl phosphate tdcipp separated single run first time using alternating positive negative heated esi source metabolite separation identification achieved using full scan full width half maximum fwhm accurate mass ppm spectrometry structural confirmation performed via ion fragmentation aif spectra using optional higher collisional dissociation hcd cell analysis first insights human metabolism hbcds revealed several hydroxylated debrominated phase metabolites addition conjugated phase glucuronides furthermore various hydroxylated oxidized conjugated metabolites chlorinated phosphorous frs identified leading suggestion alpha oxidation significant metabolic pathway compounds
parasitic worms genus trichinella phylum nematoda class enoplea represent complex least twelve taxa infect range different host animals including humans around world foodborne intracellular nematodes life cycles differ substantially nematodes recent characterization genomes transcriptomes twelve recognized taxa trichinella allows first time detailed studies molecular biology present study defined curated compared protein kinase complements kinomes trichinella spiralis pseudospiralis using integrated bioinformatic workflow employing transcriptomic genomic data sets examined variation kinome might link unique aspects trichinella morphology biology evolution furthermore utilized silico structural modeling discover characterize novel mos like kinase unusual previously undescribed terminal domain taken together present findings provide basis comparative investigations nematode kinomes might facilitate identification enoplea specific intervention diagnostic targets importantly silico modeling approach assessed provides exciting prospect able identify classify currently unknown orphan kinases foundation subsequent structural functional investigation
understanding structure function generically described immune system essential contemporary biomedicine clear one size fits approach applied across multiple species fraught contradictions inconsistencies nevertheless breakthroughs achieved immunology following application observations murine systems man pivotal advancement biology human medicine however additional species used address biologic safety assessment questions relative structure function immune system become clear differences across species gender age strain must considered meaningfulness differences must determined case case basis review article attempts collect consolidate discuss species differences thereby aiding accurate placement new observations proper immunobiological immunopathological perspective
organophosphorus pesticides nerve agents designed inhibit hydrolysis neurotransmitter acetylcholine covalently binding active site serine acetylcholinesterase alzheimer drugs prophylactics tacrine characterized reversible binding historically guinea pig believed best non primate model toxicology medical countermeasure development similarly humans guinea pigs low amounts circulating metabolizing carboxylesterase explore hypothesis guinea pigs appropriate responder species toxicology medical countermeasure development guinea pig acetylcholinesterase gpache cloned pentr topo recombined rex dest expressed human embryonic kidney cells recombinant gpache purified specific activity using size exclusion immobilized nickel affinity chromatography purity confirmed gel electrophoresis ellman assay used enzymatically characterize gpache identifying mol kcat sec apparent gpache diisopropylfluorophosphate dicrotophos paraoxon alzheimer drug tacrine found mol respectively apparent gpache inhibition constants diisopropylfluorophosphate dicrotophos paraoxon tacrine found perpendicular perpendicular perpendicular perpendicular mol respectively lineweaver burk plots confirmed tacrine mixed inhibitor paraoxon dicrotophos diisopropylfluorophosphate irreversible non competitive inhibitors gpache bimolecular rate constants diisopropylfluorophosphate dicrotophos paraoxon found mol min respectively although blood levels metabolizing carboxylesterases guinea pig similar low levels human blood gpache different enzymology therefore medical countermeasures intoxication tested efficacy recombinant form gpache prior initiating animal studies
background viable single cell crucial studies single cell biology paper laser induced forward transfer lift used isolate individual cell closed chamber designed avoid contamination maintain humidity hela cells used study impact laser pulse energy laser spot size sacrificed layer thickness working distance size distribution number proliferation ratio separated cells statistically evaluated glycerol used increase viscosity medium alginate introduced soften landing process results role laser pulse energy spot size thickness titanium energy absorption lift process theoretically analyzed lambert beer thermal conductive model comprehensive analysis mechanical damage found dominant factor affecting size proliferation ratio isolated cells orthogonal experiment conducted optimal conditions determined laser pulse energy spot size thickness titanium working distance glycerol alginate depth greater conditions along continuous incubation single cell could transferred lift one shot limited effect cell size viability conclusion lift conducted closed chamber optimized condition promising method reliably isolating single cells
glycoprotein nonmetastatic melanoma protein type transmembrane protein recently found play role cancer cell proliferation angiogenesis invasion due potential responsibility cancer aggressiveness main objective work investigate expression bladder cancer biological functions bladder cancer cells using immunohistochemistry western blot reverse transcription polymerase chain reaction analyzed expression glycoprotein nonmetastatic melanoma protein bladder cancer tissues bladder cancer cell lines effects glycoprotein nonmetastatic melanoma protein proliferation migration invasion tested knocking glycoprotein nonmetastatic melanoma protein bladder cancer cells small interfering rnas cck transwell matrigel assays results showed glycoprotein nonmetastatic melanoma protein protein highly expressed bladder cancer tissues cell lines downregulating glycoprotein nonmetastatic melanoma protein could suppress proliferation migration invasion bladder cancer cells glycoprotein nonmetastatic melanoma protein expression related poor differentiation recurrence immunohistochemistry analysis survival analysis also showed glycoprotein nonmetastatic melanoma protein related patient prognosis conclusion glycoprotein nonmetastatic melanoma protein protein highly expressed bladder cancer related poor prognosis bladder cancer patients glycoprotein nonmetastatic melanoma protein promoted proliferation migration invasion bladder cancer cells
mesenchymal neoplasms thymus mediastinum account neoplasms mediastinum therefore rare exceptions histology immunohistochemistry based current knowledge molecular biology mediastinal soft tissue tumors different counterparts organs characteristic features concerned clinical epidemiological therapeutic aspects well multitude possible differential diagnoses exception organ specific tumors gastrointestinal stromal tumors gist virtually entities encountered peripheral soft tissues also arise mediastinum primary mediastinal soft tissue sarcomas sts must distinguished secondary radiation induced sts irradiation breast cancer hodgkin lymphoma sts arising somatic type malignancies mediastinal germ cell tumors
novel soybean infecting sobemovirus termed soybean yellow common mosaic virus sycmv characterized virus single positive strand rna genome nucleotides virus contains four putative open reading frames encoding polyprotein orfa polymerase domain orfb entire nucleotide sequence sycmv showed nucleotide identity previously known eleven species sobemovirus host range analysis sycmv twenty one species three different nicotiana tabacum cultivars belonging seven families inoculated virus sycmv narrow host range infecting glycine max soja based obtained sequence full length clones sycmv constructed symptoms produced inoculation clones indistinguishable produced inoculation sap symptomatic plants viral rna accumulation sycmv detected upper leaves northern blotting indicated full length clones sycmv sufficient produce disease symptoms genomic organization predicted amino acid sequence phylogenetic analyses known sobemoviruses confirmed assignment sycmv new member genus sobemovirus elsevier rights reserved
mammalian cell cultures preferred expression systems production biopharmaceuticals requiring posttranslational processing usually cell cultures cultivated medium supplemented serum supports cell proliferation viability productivity however due scientific regulatory concerns serum free conditions required recombinant protein production cell lines intended commercial recombinant protein production adapt serum protein free conditions early development labor time consuming process specific cell requirements related adaptation new microenvironment present study chinese hamster ovary cho cell line producing glycosylated recombinant human erythropoietin rhepo adapted growth rhepo production serum protein free conditions physiology growth parameters morphology cho cells rhepo biosynthesis structure closely monitored adaptation process avoid unwanted selection cell subpopulations results showed cho cells successfully adapted suspension growth rhepo production protein free conditions structure rhepo remained nearly unchanged addition rhepo production protein free suspension conditions agitation rate seem significant optimal process performance contrast initial cell concentration evaluated evolutionary operation method international union biochemistry molecular biology inc
pyruvate decarboxylase pdc alcohol dehydrogenase adh enzymes responsible operation ethanolic fermentation pathway appears correlate extent anoxia tolerance plants study undertaken objective analysing rice pdc gene family altering efficacy ethanolic fermentation process production transgenic rice plants expressing pyruvate decarboxylase employing ospdc gene rice well expressing alcohol dehydrogenase employing ghadh gene cotton proteins correlations noted study pattern expression pdc alpha subunit ospdc transcript well pdc beta subunit ospdc transcript suggest possibility alpha subunit encoded ospdc beta subunit encoded ospdc fact levels pdc beta subunit particularly high puh spdc plasmid construct designed expression ospdc seedlings levels beta subunit levels negligible lower puh aspdc plasmid construct designed expression ospdc seedlings also support observations transgenics raised expression pdc adh expression pdc confirmed transgene presence effects pcr southern blotting northern blotting western blotting isozyme assays pdc adh expressing rice transgenics early seedling stage unstressed control growth conditions showed slight consistent advantage root vigour compared wild type seedlings elsevier masson sas rights reserved
atomic force microscopy afm becoming prevalent tool cell biology biomedical studies especially focusing mechanical properties cells tissues newest generation bio afms combine ease use seamless integration live cell epifluorescence advanced optical microscopies unique feature respect bionanotools afm provides nanometer resolution maps cell topography stiffness viscoelasticity adhesion often overlaid matching optical images probed cells review intended embark use bio afms aims assist designing experiment measure mechanical properties adherent cells addition describing main steps typical cell mechanics protocol explaining data analysed review also discuss relevant contact mechanics models available used characterize specific features cellular biological samples
background purpose osteoprotegerin opg member tumor necrosis factor receptor superfamily involved progress atherosclerosis chose gene polymorphism locus opg explore opg gene polymorphisms relate occurrence ischemic stroke microembolic signals evaluate relationship severity neurologic deficits admission degree vascular stenosis methods studied patients diagnosed large artery atherosclerosis laa stroke controls laa stroke patients divided clinical subgroups according presence microembolic signals severity neurologic deficits admission degree vascular stenosis opg gene polymorphism examined polymerase chain reaction restriction fragment length polymorphism microembolic signals mes monitored transcranial doppler tcd min within stroke onset severity neurologic deficits admission evaluated national institutes health stroke scale nihss results genotypes allele frequencies gene polymorphism significantly higher laa group control group higher mes positive compared mes negative patients nihss score conclusion findings suggest opg gene polymorphism might related occurrence laa ischemic stroke microembolic signals stroke severity degree vascular stenosis elsevier rights reserved
integration nucleic acids detection assays microfluidic devices represents highly promising approach development convenient cheap efficient diagnostic tools clinical food safety environmental monitoring applications tools expected operate point care resource limited settings amplification target nucleic acid sequence represents key step development sensitive detection protocols integration microfluidic devices popular technology nucleic acids amplifications polymerase chain reaction pcr significantly limited thermal cycling needed obtain target sequence amplification review provides overview recent advances integration isothermal amplification methods microfluidic devices isothermal methods operate constant temperature emerged promising alternative pcr greatly simplify implementation amplification methods point care diagnostic devices devices used resource limited settings possibilities offered isothermal methods digital droplet amplification discussed
double stranded small active rna sarna sarna inhibits tumor growth stimulating gene expression focused research sarna colorectal cancer regulation signature abnormality cancer colorectal cancer might suitable target situ sarna delivery goal present study learn activity sarna colorectal cancer three human colorectal cancer cell lines hct hct transfected sarna expression protein mrna measured using western blot reverse transcriptase polymerase chain reaction pcr effect sarna cancer cells evaluated vitro furthermore xenograft colorectal tumor mode mice established estimate tumor suppressing ability sarna vivo results showed three colorectal cancer cell lines expression mrna protein dramatically elevated sarna transfection transfection sarna caused apoptosis cell cycle arrest furthermore anti proliferation effect reduction colonies formation cell senescence observed sarna treated cells animal studies showed sarna treatment significantly inhibited tumor growth facilitated activation vivo results indicated sarna induceded regulation might promising therapeutic option treatment colorectal cancer
perennial monoculture forming grasses important natural remediators pollutants genetic improvement important task introduction key transgenes dramatically improve remediation potential transfer key genes mercury phytoremediation salt marsh cordgrass spartina alterniflora reported alterniflora plays important role salt marsh cycling elements nutrients pollutants protects coastline erosion keystone species salt marsh supporting large food web turn supports significant segment economy including tourism impact cloud formation consequently global weather thus ecologically important species relevant life support systems embryogenic callus alterniflora inoculated pair agrobacterium strains lba carrying organomercurial lyase merb mercuric reductase mera genes respectively order introduce mera merb genes seven stable geneticin resistant lines recovered presence mera merb genes verified pcr southern blotting one transgenic lines contained mera merb sequences proving introduction spartina two genes separate agrobacterium strains feasible frequent although overall frequency transformation low northern blotting showed differences relative expression two transgenes among individual transformants steady state rna levels appeared correlate phenotype line showed highest resistance hgcl whereas line resistant phenylmercuric acetate pma wild type callus sensitive pma hgcl
background tnf receptors tnf receptor tnfr cda tnf receptor tnfr cdb implicated rejection transplanted cells organs although pig tnfr ptnfr known mediate effects human tnf xenogeneic setting unclear whether pig tnfr ptnfr could contribute xenograft rejection methods cloned cdna various ptnfr variants reverse transcription polymerase chain reaction pcr rapid amplification cdna ends characterized predicted proteins bioinformatic tools conducted expression affinity functional studies investigate roles results identified four isoforms ptnfr one comprising four cysteine rich domains crd conserved species shorter variant ptnfr delta encoding soluble isoform another three crd due lack exon ptnfr delta fourth variant containing modifications accordingly multiple mrna transcripts observed northern blotting quantitative pcr determined high ptnfr expression lung immune cells detected two alternative splicings cells tissues examined full receptor moderately expressed surface pig cells porcine aortic endothelial cells regulated tnf contrary membrane bound ptnfr delta located intracellularly plasmon resonance studies showed ptnfr binds pig human tnf alpha high affinity ptnfr delta interacts poorly pig tnf alpha bind human cytokine moreover pull experiments two recombinant soluble isoforms consistently demonstrated two bound together soluble ptnfr delta able modulate tnf inhibitory activity ptnfr gst cell based assay conclusion ptnfr may participate process xenograft rejection related events well used soluble form block tnf setting addition discovered ptnfr isoforms may affect pig immune responses impact rejection xenografts
gene editing technologies group recent innovations plant breeding using molecular biology common capability introducing site directed mutation deletion genome first cases crops improved technologies approaching market raised international debate regarding regulated genetically modified crops another form mutagenesis conventional breeding dilemma policymakers entails issues pertaining safety information legal regulatory definitions also demands borrowing tools developed field social studies science technology additional basis sound decision making
backgroundhuman enteroviruses associated severe acute respiratory illness sari south africa objectiveswe aimed describe molecular epidemiology serotypes among patients hospitalized sari patients methodsstudy samples patients tested presence enterovirus using polymerase chain reaction assay results sari cases tested positive enterovirus species seventeen different serotypes identified within echovirus prevalent conclusionsev monitored south africa assess emergence highly pathogenic strains
study explores conceptual history systems biology impact philosophical scientific conceptions reductionism antireductionism emergence development systems biology beginning century transformed biological science systems biology new holistic approach strategy research biological organisms developed three phases first phase completed molecular biology transformed systems molecular biology prior second phase convergence applied general systems theory nonlinear dynamics took place hence allowing formation systems mathematical biology second phase happened systems molecular biology systems mathematical biology together applied analysis biological data finally successful application science medicine biotechnology process formation modern systems biology completed systems molecular reductionist views organisms completely opposed implications systems molecular biology reductionist antireductionist debate quite different analysis reductionism antireductionism emergence issues era systems biology revealed hierarchy methodological epistemological ontological antireductionism primarily methodological antireductionism followed systems biology epistemological ontological antireductionism could supported author production hosting elsevier behalf king saud university open access article license
caveolin cav major protein component caveolae membranes vascular smooth muscle endothelium yet absence alters ultrastructure skeletal muscle fibers gain insight cav function skeletal muscle tested hypothesis genetic deletion cav would alter microvascular reactivity depress contractile function skeletal muscle vivo left gluteus maximus muscle anesthetized cav wild type male mice age microvascular responses physiological agonists contractions studied degrees feed arteries first second third order arterioles respective mean diameters rest maximal dilation similar groups cumulative dilations ach constrictions norepinephrine also similar groups steady state dilations rhythmic twitch contractions single tetanic contractions rapid onset vasodilation rov increased contraction duration throughout networks groups reduced nearly half cav mice compared mice nevertheless maximal force tetanic contraction similar greater cav mice per square millimeter respectively thus structural functional properties resistance networks well maintained cav mice diminished rov greater force production reveals novel physiological roles cav skeletal muscle
airway exposure lipopolysaccharide lps shown regulate type type helper cell induced asthma high doses lps derive immune responses low lps levels lead responses paper analyze mathematical model thl asthma regulation suggested lee lee hwang kim modeling role tgf regulation phenotype lps driven immune system bull math biol show system undergo hopf bifurcation steady state phenotype high lps levels presence time delays inhibition pathways two key regulators activities tcf beta levels time delays affect phenotypic switches among thl phenotypes response time dependent lps doses via nonlinear crosstalk extended reaction diffusion model also predicts coexistence phenotypes various biochemical bio mechanical conditions heterogeneous microenvironment
pathophysiological changes associated alzheimer disease begin decades emergence clinical symptoms understanding early mechanisms associated pathology therefore especially important identifying disease modifying therapeutic targets majority clinical trials date focused anti amyloid beta beta treatments therapeutic approaches may necessary ability monitor changes cellular networks include beta non beta pathways essential advance understanding etiopathogenesis subsequent development cognitive symptoms dementia metabolomics powerful tool detects perturbations metabolome pool metabolites reflects changes downstream genomic transcriptomic proteomic fluctuations represents accurate biochemical profile organism health disease application metabolomics could help identify biomarkers early diagnosis discover novel therapeutic targets monitor therapeutic response disease progression moreover given considerable parallel mouse human metabolism use metabolomics provides ready translation animal research human studies accelerated drug design review summarize current progress application metabolomics animal models humans understanding mechanisms involved pathogenesis article part special issue entitled misfolded proteins mitochondrial dysfunction neurodegenerative diseases elsevier rights reserved
unbiased genetic approaches unique ability identify novel genes associated specific biological pathways thanks next generation sequencing forward genetic strategies expanded wider range model organisms formation secretory granules called mucocysts ciliate tetrahymena thermophila relies part ancestral lysosomal sorting machinery also likely involve novel factors prior work multiple strains defects mucocyst biogenesis generated nitrosoguanidine mutagenesis characterized using genetic cell biological approaches genetic lesions unknown show analyzing one mutant whole genome sequencing reveals novel factor mucocyst formation strain morphological biochemical defects mucocyst maturation process analogous dense core granule maturation animals illumina sequencing pool clones identified missense mutation novel gene called mma mucocyst maturation defects rescued expression wild type copy mma disrupting mma otherwise wild type strain phenocopies product mma characterized cfp tagged copy encodes large soluble cytosolic protein small fraction mmap cfp pelletable may reflect association endosomes gene identifiable homologs except tetrahymena species therefore represents evolutionarily recent innovation required granule maturation
background previous studies indicated tec tyrosine kinase differentially expressed regenerating liver purpose present study investigate potential involvement tec tyrosine kinase hepatocyte proliferation liver regeneration methods tec kinase gene expression partial two thirds hepatectomy examined representational difference analysis tissue distribution potential involvement tec kinase liver regeneration hepatocyte proliferation determined northern blotting reverse transcription polymerase chain reaction pcr western blotting full length rat tec cdna cloned results using cdna probe northern blotting showed tec specifically expressed liver kidney highest expression tec detected embryonic day fetal livers contrast expression level tec adult neonatal rat livers significantly decreased similar results obtained western blotting analyzes thus hypothesized tec might involved hepatocyte proliferation test hypothesis tec expression examined regenerating rat livers increase tec expression activation tec kinase observed within partial hepatectomy moreover shown hepatocyte growth factor hgf dramatically induces tec expression primary rat hepatocytes additionally observed tec gene expression serum starved liver tumor cell line hepg substantially decreased stimulation fetal bovine serum insulin epidermal growth factor resulted dramatic elevation tec expression cells conclusion tec inducible early response gene might enhance hepatocyte proliferation liver regeneration
dehydrins large family abiotic stress proteins defined presence mostly conserved motif known segment may also contain two conserved motifs known segment segment using dehydrin literature developed sequence motif definition segment used create large dataset dehydrin sequences searching pfam dehydrin dataset phytozome sequences vascular plants comprehensive analysis sequences reveals lysine residues highly conserved segment amino acid type often conserved positions despite segment name central tyrosine somewhat conserved substituted two small aromatic amino acids phenylalanine histidine segment contains series serine residues proteins also preceded conserved lhr sequence many dehydrins containing three motifs segment linked segment gxggrrkk motif amino acid suggesting functional linkage two motifs analysis sequences shows dehydrin architecture several biochemical properties isoelectric point molecular mass hydrophobicity score dependent dehydrin architectures overexpressed certain abiotic stress suggesting may optimized specific abiotic stress others involved forms dehydration stress drought cold salinity
metabolism vital cellular process malfunction major contributor human disease metabolic networks complex highly interconnected thus systems level computational approaches required elucidate understand metabolic genotype phenotype relationships manually reconstructed global human metabolic network based build genome annotation comprehensive evaluation years legacy data bibliomic data herein describe reconstruction process demonstrate resulting genome scale global network used discovery missing information formulation silico model iii structured context analyzing high throughput biological data sets comprehensive evaluation literature revealed many gaps current understanding human metabolism require future experimental investigation mathematical analysis network structure elucidated implications intracellular compartmentalization potential use correlated reaction sets alternative drug target identification integrated analysis high throughput data sets within context reconstruction enabled global assessment functional metabolic states results highlight applications enabled reconstructed human metabolic network establishment network represents important step toward genome scale human systems biology
purpose trabecular meshwork cell volume determinant aqueous humor outflow resistance thereby iop regulation cell volume depends chloride ion release swelling activated channels swell whose pore formed lrrc proteins chloride ion release swelling activated channels reported regulated calcium activated anoctamins finding controversial particularly uncertain effect anoctamin ano reported activated cacc cation channel cells current study tested whether anoctamin activity modifies volume regulation primary cell cultures cell lines methods gene expression studied quantitative pcr supplemented reverse transcriptase pcr andwestern immunoblots currents measured ruptured whole cell patch clamping volume electronic cell sizing results primary cell cultures gtm cell lines expressed ano orders magnitude higher anoctamin caccs ano ano ionomycin increased cell activated macroscopic currents conforming caccs cells displayed significantly positive mean reversal potentials displayed swell cells nonselective cacc inhibitors tannic acid cacc inh transient ano knockdown strongly inhibited ionomycin activated currents swell regulatory volume response hyposmotic swelling conclusions ionomycin activates caccs associated net cation movement cells currents swell cell volume regulated ano findings suggest novel clinically relevant approach altering cell volume thereby outflow resistance targeting ano
efficient protocol genetic transformation somatic embryos quercus robur selection temporary immersion system reported transformation frequency times higher achieved conventional culture semi solid medium ranging four genotypes evaluated clumps globular torpedo somatic embryos precultured days inoculated agrobacterium tumefaciens strain eha psgusint cocultivated days cultured weeks semi solid selection medium supplemented kanamycin explants transferred rita bioreactors subjected two step selection protocol involving immersion liquid medium supplemented kanamycin weeks kanamycin putatively transformed explants appeared serial transfer selection medium weeks presence neomycin phosphotransferase beta glucuronidase genes plant genome confirmed histochemical molecular analysis copy number determined southern blotting real time quantitative polymerase chain reaction transformed somatic embryos germinated transferred soil acclimatization approximately months inoculation original tissue bacteria limiting factor recovery plants oak embryogenic lines low embryo conversion rate axillary shoot lines established transformed germinated embryos transformed embryos shoots cultured medium without kanamycin responses several morphogenetic processes recovery cryopreservation germination shoot proliferation rooting evaluated
cancer stem cells cscs defined unlimited self renewal ability capacity initiate maintain malignancy traits found cells comprise tumor although current cancer treatments successfully reduce tumor burden tumor likely recur unless cscs effectively eradicated challenge made greater protective impact tumor microenvironment tme consisting infiltrating immune cells endothelial cells extracellular matrix signaling molecules tme acts therapeutic barrier immunosuppressive thereby tumor promoting actions factors outside cancer cell lineage work concert shelter cscs body intrinsic anticancer immunity pharmaceutical interventions maintain cancer growth emerging therapies aimed tme offer promising new tool breaking shield target cscs yet definitive treatments remain unrealized review summarize mechanisms cscs protected tme current efforts overcome barriers stem cells
low levels pharmaceutical compounds detected aquatic environments worldwide human ecological health risks associated low dose environmental exposure largely unknown due large number compounds lack information therefore prioritization ranking methods needed screening target compounds research risk assessment previous efforts rank pharmaceutical compounds often focused occurrence data paid less attention removal mechanisms human metabolism study proposes simple prioritization approach based number prescriptions toxicity information accounting metabolism wastewater treatment removal applied unmeasured compounds approach performed prescribed drugs results showed studied compounds levothyroxine montelukast sodium received highest scores suggesting importance removal mechanisms influencing ranking need future environmental research include less studied potentially harmful pharmaceutical compounds published elsevier inc
bacterial leaf fruit spot canker stone fruits caused xanthomonas arboricola pruni recurrent disease italy set strains isolated peach plum orchards intensively stone fruit cultivated area located north eastern italy identified arboricola pruni means phytopathological serological features hypersensitive reaction bean pods pathogenicity test immature peach plum fruitlets identification immunofluorescence assay conventional pcr phylogenetic analysis based sequencing gyrb housekeeping gene isolates showed formed unique clade well characterised separated xanthomonads insight genetic population features attempted rep pcr analysis using eric rep box primers combined rep pcr fingerprints showed slight intra pathovar variation within isolates grouped five close clusters copper resistance assessed vitro whole arboricola pruni collection highlighting two isolates show level resistance vitro ppm copper nonetheless coplab gene cluster present many species xanthomonads detected isolate confirming presence still unknown mechanism copper detoxification xanthomonads arboricola pruni tolerant resistant strains
mercury environmental toxicant present environment elemental inorganic organic compounds nervous system supposed key target toxicity research indicates selenium may used protective agent neurotoxicity therefore aim review examine new implications molecular biology neurotoxicity specifically focus influence compounds interfering thiols neurotoxicity molecular level mercury form stable coordination compounds species characterized higher affinity selenol groups compared thiol groups therefore containing molecules targets binding may least partially mediate biological outcome interaction molecular interaction elements also involves mutual interaction various selenoproteins experimental data demonstrate treatment modifies brain retention modulates neurotoxicity oxidative stress nervous tissue animals human data also indicate molecular interaction may significant influence neurodevelopment brain functioning neurodegeneration hypothesized effectiveness protection neurotoxicity may determined dose elements well particular chemical forms studies required estimate intimate mechanisms interaction vivo elsevier rights reserved
sunflower leaf spot caused necrotrophic pathogen alternaria helianthi one important biotic constraints sunflower production biochemical basis resistance infection helianthi sunflower poorly elucidated differential activation early defense responses like increased peroxidase activity predisposes host plant resistance present study active role peroxidase resistant susceptible interactions sunflower leaf spot pathogen demonstrated using native page analysis northern blotting differential time dependent induction peroxidase isoforms evident resistant susceptible genotypes pathogen inoculation resistant interaction three peroxidase isoforms found expressed inoculation susceptible interaction present found inoculation however susceptible genotype expression intensity lower resistant interaction time intervals molecular expression profiling northern blotting using heterologous cdna probes showed rapid regulation peroxidase resistant interaction results demonstrate peroxidase isoforms involved defense helianthi genetic regulation form transcript accumulation important expression disease resistance
epigenetic inheritance inheritance genetic information based dna sequence alone one type epigenetic information come forefront last years modified dna bases common modified dna base nature methylcytosine herein describe laboratory experiment combines bioinformatic molecular approaches study presence abundance methylcytosine different organisms students originally provided protein sequence xenopus laevis dnmt cytosine dna methyltransferase used blastp searches detect presence protein orthologs genomes several organisms including homo sapiens mus musculus plasmodium falciparum drosophila melanogaster saccharomyces cerevisiae arabidopsis thaliana caenorhabditis elegans students generated hypotheses regarding presence abundance methylcytosine organisms based bioinformatics data directly tested predictions subset dnas using restriction enzyme isoschizomer assays southern blotting assay answer question also presented addition exposure field epigenetics strengths laboratory students able make predictions using bioinformatic tools quickly test laboratory addition students exposed two potential misinterpretations bioinformatic search data laboratory easily modified incorporate outside research interests epigenetics international union biochemistry molecular biology
analysis erythrocyte morphology important determinant diagnosis many diseases development reliable automated image analysis techniques red blood cells rbcs image remains important goal computational molecular biology due characteristic rbcs image captured electron microscope novel cascading red blood cells segmentation method proposed firstly feasibility threshold segmentation analyzed method based number connected component coarse segmentation put forward successfully extracts rbcs areas images accuracy marked watershed algorithm bases random hough circle detection mathematical morphology proposed overlapped rbcs original image compared widely used method accuracy method improved obviously experimental results show proposed method robust different rbcs images automatically separating rbcs extraction rate reached time automatic counting accuracy
background aims expression atp binding cassette transporter abc key membrane protein biogenesis high density lipoprotein hdl regulated gene transcription also intracellular degradation modulate plasma hdl concentration previously showed inhibition abca degradation probucol oxidative products spiroquinone diphenoquinone increased hdl biogenesis reverse cholesterol transport achieved reduction atherosclerosis animal models background mechanism thus investigated methods involvement caveolin protein multiple functions cell biology particularly cholesterol trafficking examined roles abca degradation well effects reaction results abca protein increased caveolin deficient mouse embryonic fibroblasts increase transcription decrease internalization degradation transfection expression caveolin normalized protein level rate degradation abca immunoprecipitation experiments demonstrated association abca caveolin disrupted interaction effects increase abca cell cholesterol release induced apolipoprotein dependent expression caveolin fluorescence imaging abca caveolin cultured cells demonstrated localization well disruption consistent biochemical findings conclusions caveolin enhances internalization degradation abca association abca interference interaction probucol oxidative products suppresses abca degradation increase hdl biogenesis elsevier ireland ltd rights reserved
filamentous plant pathogens deliver effector proteins host cells promote infection phytophthora infestans rxlr type effector pexrd binds potato atg via atg family interacting motif aim perturbs host selective autophagy however structural basis interaction remains unknown define crystal structure pexrd includes modular architecture including five tandem repeat domains aim sequence presented disordered terminus determine interface pexrd atg solved crystal structure potato atgcl complex peptide comprising effector aim sequence established model full length pexrd atgcl complex using small angle ray scattering structure informed deletion pexrd tandem domains reveals retention atgcl binding vitro planta study offers new insights structure function relationships oomycete rxlr effectors proteins engage host cell targets promote disease
asthma chronic inflammatory heterogeneous disease developing mostly allergic inflammation modifies expression various cytokines neurotrophins previous studies suggest involvement interleukin regulation immune response asthma brain derived neurotrophic factor bdnf plays important role regulator development survival neurons well maintenance physiological activity chronic stress associated asthma elevated mrna bdnfii mrna levels may affect mood subjective sensation dyspnoea inducing anxiety psychopathological variables numerous cytokine neurotrophin interactions influence formation temperament strategies coping stress aim study identify role mrna bdnfii mrna expressions effect components temperament strategies coping stress asthmatics total subjects healthy volunteers asthmatic patients participated study formal characteristic behaviour temperament inventory fcb coping inventory stressful situations ciss beck depression inventory state trait anxiety inventory borg rating perceived exertion rpe scale applied subjects expression bdnfii gene measured using quantitative real time polymerase chain reaction qrt pcr different levels bdnfii expressions healthy volunteers patients revealed study enhanced bdnfii mrna expression among patients bronchial asthma depression level negatively correlated bdnfii mrna expression neurotrophin modified temperament variable bdnfii significantly affected proportional relationship level briskness asthmatic patients bdnfii might influence level style coping stress emotion oriented style hypothesis requires studies protein functional models obtained data confirms role bdnfii pathomechanisms depression formation selected traits defining temperament asthmatics
new educational trends field science technology furthering new strategies based collaborative learning critical thinking manipulative activities team work bearing mind concepts new learning experience area industrial enzymology developed master course followed strategy pursued combination theoretical concepts chemical engineering empirical data related production lipolytic enzymes enzymes triggering great academic interest due enormous versatility applied plethora industrial sectors since operation industrial processes usually involves high temperatures finding thermostable biocatalysts crucial achieving efficient outcomes number hot spots northwest spain recently screened thermophilic microbial strains lipolytic activity thus students tried obtain biocatalysts plate flask scale emphasis characterization microbial growth enzyme production way learning process covered different stages biological process sampling enzyme quantification cultivation isolated strains students faced typical equipment techniques commonly used research laboratory prior step approach modeling experimental data steps carried students commercial software superpro designer used simulation tool reasons behind proposal learning strategy master students lack published protocols obtain extremophilic microbial strains consortia able synthesize lipases licensing bring together basic knowledge industrial microbiology theoretical concepts bioprocess modeling obtaining experimental data used simulation process industrial scale iii explore research capabilities students hot topic production metabolites extremophiles high level satisfaction among students evaluated means surveys results exams qualifications encourage widen present methodology future
aim investigate whether dna dependent activator interferon regulatory factors dai inhibits hepatitis virus hbv replication mechanism methods human hepatoma cell line huh cotransfected dai hbv expressing plasmid viral protein hbv surface antigen hbv antigen secretion detected enzyme linked immunosorbent assay hbv rna analyzed real time polymerase chain reaction northern blotting viral dna replicative intermediates examined southern blotting interferon regulatory factor irf phosphorylation nuclear translocation analyzed via western blotting immunofluorescence staining respectively nuclear factor kappa kappa activity induced dai detected immunofluorescence staining dual luciferase reporter assay transwell culture experiment performed order investigate whether antiviral effects dai dependent secreted cytokines results viral protein secretion significantly reduced level total hbv rna reduced viral core particle associated dna also dramatically regulated dai expressing huh cells analysis involved signaling pathways revealed activation kappa signaling essential dai elicit antiviral response huh cells kappa signaling pathway blocked kappa signaling suppressor kappa alpha anti hbv activity dai remarkably abrogated inhibitory effect dai independent irf signaling secreted cytokines conclusion study demonstrates dai inhibit hbv replication inhibitory effect associated activation kappa independent irf secreted cytokines baishideng rights reserved
background aims mir abundant microrna liver regulates metabolic pathways including cholesterol biosynthesis fatty acid synthesis oxidation however little known mechanisms regulate expression mir liver aim study identify key transcriptional regulators mir expression intensively studying primary transcript promoter region methods bioinformatics analysis northern blotting pcr race performed analyze mir primary transcript structure promoter region potential transacting factor binding sites reporter gene assays integrated truncation site mutation mir promoter performed determine trans activation effect hnf alpha mir promoter vitro chip emsa assays performed determine hnf alpha binding mir promoter finally forced expression rnai performed verify regulatory roles hnf mir expression vitro vivo results show mir processed long spliced primary transcript directed distal upstream promoter region conserved across species dissected promoter region identified putative binding sites liver enriched transcriptional factors contribute regulation mir expression including putative binding site hepatocyte nuclear factor alpha hnf alpha demonstrate hnf alpha binds mir promoter region conserved element observed element dependent activation effect hnf alpha conserved mir promoter activation could enhanced addition pgc alpha using overexpression knockdown strategies show hnf alpha positively regulates mir expression huh cells mouse liver conclusions results suggest hnf alpha key regulator mir expression liver european association study liver published elsevier rights reserved
thorough understanding molecular biosciences requires ability visualize manipulate molecules order interpret results generate hypotheses many instructors biochemistry molecular biology use visual representations indicate explicitly teach visual literacy one reason need list core content competencies guide deliberate instruction visual literacy offer second stage development one resource biomolecular three dimensional visual literacy present work goal building community online resource development use first stage overarching themes identified submitted biosciences community comment atomic geometry alternate renderings construction annotation het group recognition molecular dynamics molecular interactions monomer recognition symmetry asymmetry recognition structure function relationships structural model skepticism topology connectivity herein overarching themes expanded include theme macromolecular assemblies learning goals corresponding objectives many cut across multiple overarching themes learning goals objectives offered provide educators framework map use molecular visualization classrooms addition framework may also used biochemistry molecular biology educators identify gaps coverage drive creation new activities improve visual literacy work represents first attempt knowledge catalog comprehensive list explicit learning goals objectives visual literacy international union biochemistry molecular biology
background lipoma preferred partner lpp cell activation rho gtpase activating protein tagap polymorphisms might influence susceptibility celiac disease therefore performed meta analysis identifying relevant studies estimate risks polymorphisms celiac disease methods pubmed web science embase databases searched october lpp tagap polymorphisms results meta analysis included studies lpp tagap minor risk allele carried risks odds ratios respectively contributed increased risks celiac disease patients respectively estimated lambdas respectively suggesting dominant model would suitable gene effects conclusions meta analysis provides robust estimates polymorphisms lpp tagap genes potential risk factors celiac disease european american prospective studies genome wide association studies gwas needed confirm findings corresponding molecular biology experiments carried clarify pathogenic mechanisms celiac disease
background extra oral bitter taste receptors associated innate bacterial defence mechanisms genetic variation functionality shown associated susceptibility upper respiratory tract infections chronic rhino sinusitis crs sought independently assess influence bitter taste receptor genotype presence culturable bacteria sinuses methodology cross sectional analysis patients crs undergoing surgery performed middle meatal nasal swabs sent microbiological evaluation time procedure mucosal biopsies taken sent bitter taste receptor genotype analysis sequencing polymorphisms thetasr gene performed identify genotypes super tasters pav pav non tasters avi avi heterozygous expression pav avi presence culturable organisms common pathogens compared bitter taste receptor genotypes results patients age years female assessed super tasters comprised group non tasters heterozygous expression cultured pathogen grown patients gram positive gram negative grew staphylococcus aureus pseudomonas aeruginosa non taster genotype predictive colonised pathogens tissue eosinophilia hpf seen conclusion even small sample patients crs non taster genotype appears predict presence culturable bacteria colonising sinus cavity time surgery condition genetic link patients likely become infected likely
studied human vivo metabolism delta carene crn natural monoterpene commonly occurs human environment four healthy human volunteers orally exposed single dose crn volunteer gave one urine sample administration subsequently collected urine sample within administration concentration proposed crn metabolites delta caren crn delta caren carboxylic acid chaminic acid crn cooh delta caren diol crn determined using specific sensitive procedure crn metabolites investigated using pci scan analyses crn cooh detected urine sample maximum concentration administration whereas crn crn detected samples renal excretion kinetics crn cooh showed elimination half life cumulative excretion crn cooh within exposure correlated applied dose pci scan analysis indicated several additional human crn metabolites thereof six spectra enabled prediction corresponding chemical structure results study indicate crn cooh relevant product human vivo metabolism crn oxidation allylic methyl group proceeds acidic structure without interruption thus generation alcoholic intermediate appeared rate determining step metabolic route nevertheless proportion crn cooh crn metabolism low oxidative metabolites likely hypothesis confirmed discovery additional human crn metabolites whose predicted chemical structures fit oxidative products crn metabolism
background aims subunit heterotrimeric stimulatory protein gsa encoded guanine nucleotide binding protein alpha stimulating gene gnas mice expressed ubiquitously mediates receptor stimulated production cyclic adenosine monophosphate activation protein kinase signaling pathway investigated roles gsa vivo smooth muscle cells mice methods performed studies mice cre recombinase mediated disruption gnas smooth muscle cells gsasmko creert induced adult mice tamoxifen intestinal tissues collected histologic biochemical molecular cell biology physiology analyses intestinal function assessed mice using whole gut transit time test compared gene expression patterns intestinal smooth muscle mice without disruption gnas biopsy specimens ileum patients chronic intestinal pseudoobstruction age matched control biopsies analyzed immunohistochemistry results disruption gnas smooth muscle mice reduced intestinal motility led death within weeks tamoxifen induced disruption gnas adult mice impaired contraction intestinal smooth muscle peristalsis died within months tamoxifen exposure features intestinal pseudoobstruction characterized chronic intestinal dilation dysmotility gsa deficiency reduced intestinal levels cyclic adenosine monophosphate transcriptional activity cyclic adenosine monophosphate response element binding protein creb resulted decreased expression forkhead box gene foxf protein contractile proteins myosin heavy chain actin smooth muscle aorta calponin myosin light chain kinase found decreased levels gsa foxf creb phosphorylated creb proteins intestinal muscle layers patients chronic intestinal pseudo obstruction compared tissues controls conclusions gsa required intestinal smooth muscle contraction mice levels reduced ileum biopsies patients chronic intestinal pseudo obstruction mice disruption gnas might used study human chronic intestinal pseudo obstruction
study evaluated ambient noise effect onshore offshore aquaculture systems oxidative status immune parameters gilthead sea bream sparus aurata juveniles experiment performed days projecting two different playlists acoustic stimuli offshore aquaculture noise condition created typical acoustic field proximity offshore sea cage fish farming using random sequence quite sea background boat noises onshore aquaculture noise condition represented acoustic field inside open concrete tank fish farming third group without acoustic projection used control days beginning acoustic noise fish exposed offshore aquaculture condition showed significantly higher levels total oxidant status lysozyme activity antiprotease activity white blood cells together lower albumin globulin ratio comparison fish control group whereas fish exposed onshore condition showed analytical data placed groups though never significantly different results demonstrate offshore aquaculture noise particular sea soundscape adversely influences oxidative status immune function gilthead sea bream determining mild stress condition could affect sea bream welfare
date transcriptome profile analysis maize seedlings response cold stress well documented however changes protein species abundance maize seedlings response cold stress still unknown herein leaves maize inbred line cold resistance genotype harvested three leaf stage used identify differential abundance protein species daps chilling stress degrees control conditions degrees itraq based quantitative proteomic used study result daps identified chilling stress bioinformatic analysis showed daps annotated gene ontology functional groups daps classified clusters orthologous groups protein categories daps enrichment kegg pathways antioxidants assays validated itraq results reliable based functional analysis concluded adaptive response maize seedlings chilling stress might related alleviation photodamage caused energized state thylakoid membrane energy produced glycolysis increased abundance stress responsive protein species improvement overall ability scavenge ros posttranscriptional regulation posttranslational modifications also play important roles maize adapt chilling stress biological significance major challenge maize breeders complexity response chilling stress although extensive researches focus maize chilling stress using segregating populations epigenetics transcriptomics molecular biology however molecular mechanism chilling stress maize remains elucidated present paper differential proteomic analysis performed results revealed adaptive response maize seedlings chilling stress might related alleviation photodamage caused energized state thylakoid membrane energy produced glycolysis increased abundance stress responsive protein species improvement overall ability scavenge ros including detoxifying enzymes antioxidants posttranscriptional regulation posttranslational modifications also play important roles maize adapt chilling stress approach identified new protein species involved posttranslational modifications signal transduction lipid metabolism inorganic ion transport metabolism biological processes previously known associated chilling stress response elsevier rights reserved
present article reviews biotechnological research zingiber montanum koenig link dietr cassumunar ginger studies biotechnological interventions plant focused mainly application tissue culture techniques recently attentions drawn towards genomic studies mostly aimed establishing genetic relationship different gene pools present review summarizes various aspects tissue culture protocol vitro micropropagation vitro microrhizome induction vitro conservation technology molecular biology studies medicinal plant review help research plant areas related tissue culture propagation increased production important secondary metabolites phylogenetic analysis genetic engineering moreover offer insight crop improvement breeding programs important underutilized medicinal plant improved yield quality secondary metabolites
